axmol/extensions/ImGuiEXT/imgui/imgui.h

// dear imgui, v1.84
// (headers)

// Help:
// - Read FAQ at http://dearimgui.org/faq
// - Newcomers, read 'Programmer guide' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
// - Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp. All applications in examples/ are doing that.
// Read imgui.cpp for details, links and comments.

// Resources:
// - FAQ                   http://dearimgui.org/faq
// - Homepage & latest     https://github.com/ocornut/imgui
// - Releases & changelog  https://github.com/ocornut/imgui/releases
// - Gallery               https://github.com/ocornut/imgui/issues/4451 (please post your screenshots/video there!)
// - Wiki                  https://github.com/ocornut/imgui/wiki (lots of good stuff there)
// - Glossary              https://github.com/ocornut/imgui/wiki/Glossary
// - Issues & support      https://github.com/ocornut/imgui/issues
// - Discussions           https://github.com/ocornut/imgui/discussions

/*

Index of this file:
// [SECTION] Header mess
// [SECTION] Forward declarations and basic types
// [SECTION] Dear ImGui end-user API functions
// [SECTION] Flags & Enumerations
// [SECTION] Helpers: Memory allocations macros, ImVector<>
// [SECTION] ImGuiStyle
// [SECTION] ImGuiIO
// [SECTION] Misc data structures (ImGuiInputTextCallbackData, ImGuiSizeCallbackData, ImGuiWindowClass, ImGuiPayload,
ImGuiTableSortSpecs, ImGuiTableColumnSortSpecs)
// [SECTION] Helpers (ImGuiOnceUponAFrame, ImGuiTextFilter, ImGuiTextBuffer, ImGuiStorage, ImGuiListClipper, ImColor)
// [SECTION] Drawing API (ImDrawCallback, ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListSplitter,
ImDrawFlags, ImDrawListFlags, ImDrawList, ImDrawData)
// [SECTION] Font API (ImFontConfig, ImFontGlyph, ImFontGlyphRangesBuilder, ImFontAtlasFlags, ImFontAtlas, ImFont)
// [SECTION] Viewports (ImGuiViewportFlags, ImGuiViewport)
// [SECTION] Platform interface for multi-viewport support (ImGuiPlatformIO, ImGuiPlatformMonitor)
// [SECTION] Obsolete functions and types

*/

#pragma once

// Configuration file with compile-time options (edit imconfig.h or '#define IMGUI_USER_CONFIG "myfilename.h" from your
// build system')
#ifdef IMGUI_USER_CONFIG
#    include IMGUI_USER_CONFIG
#endif
#if !defined(IMGUI_DISABLE_INCLUDE_IMCONFIG_H) || defined(IMGUI_INCLUDE_IMCONFIG_H)
#    include "imconfig.h"
#endif

#ifndef IMGUI_DISABLE

//-----------------------------------------------------------------------------
// [SECTION] Header mess
//-----------------------------------------------------------------------------

// Includes
#    include <float.h>   // FLT_MIN, FLT_MAX
#    include <stdarg.h>  // va_list, va_start, va_end
#    include <stddef.h>  // ptrdiff_t, NULL
#    include <string.h>  // memset, memmove, memcpy, strlen, strchr, strcpy, strcmp

// Version
// (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at
// XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
#    define IMGUI_VERSION "1.84.1"
#    define IMGUI_VERSION_NUM 18403
#    define IMGUI_CHECKVERSION()                                                                                  \
        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), \
                                              sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
#    define IMGUI_HAS_TABLE
#    define IMGUI_HAS_VIEWPORT  // Viewport WIP branch
#    define IMGUI_HAS_DOCK      // Docking WIP branch

// Define attributes of all API symbols declarations (e.g. for DLL under Windows)
// IMGUI_API is used for core imgui functions, IMGUI_IMPL_API is used for the default backends files (imgui_impl_xxx.h)
// Using dear imgui via a shared library is not recommended, because we don't guarantee backward nor forward ABI
// compatibility (also function call overhead, as dear imgui is a call-heavy API)
#    ifndef IMGUI_API
#        define IMGUI_API
#    endif
#    ifndef IMGUI_IMPL_API
#        define IMGUI_IMPL_API IMGUI_API
#    endif

// Helper Macros
#    ifndef IM_ASSERT
#        include <assert.h>
#        define IM_ASSERT(_EXPR) assert(_EXPR)  // You can override the default assert handler by editing imconfig.h
#    endif
#    define IM_ARRAYSIZE(_ARR) \
        ((int)(sizeof(_ARR) / sizeof(*(_ARR))))  // Size of a static C-style array. Don't use on pointers!
#    define IM_UNUSED(_VAR) \
        ((void)(_VAR))  // Used to silence "unused variable warnings". Often useful as asserts may be stripped out from
                        // final builds.
#    if (__cplusplus >= 201100) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201100)
#        define IM_OFFSETOF(_TYPE, _MEMBER) \
            offsetof(_TYPE, _MEMBER)  // Offset of _MEMBER within _TYPE. Standardized as offsetof() in C++11
#    else
#        define IM_OFFSETOF(_TYPE, _MEMBER) \
            ((size_t) & (((_TYPE*)0)->_MEMBER))  // Offset of _MEMBER within _TYPE. Old style macro.
#    endif

// Helper Macros - IM_FMTARGS, IM_FMTLIST: Apply printf-style warnings to our formatting functions.
#    if !defined(IMGUI_USE_STB_SPRINTF) && defined(__MINGW32__)
#        define IM_FMTARGS(FMT) __attribute__((format(gnu_printf, FMT, FMT + 1)))
#        define IM_FMTLIST(FMT) __attribute__((format(gnu_printf, FMT, 0)))
#    elif !defined(IMGUI_USE_STB_SPRINTF) && (defined(__clang__) || defined(__GNUC__))
#        define IM_FMTARGS(FMT) __attribute__((format(printf, FMT, FMT + 1)))
#        define IM_FMTLIST(FMT) __attribute__((format(printf, FMT, 0)))
#    else
#        define IM_FMTARGS(FMT)
#        define IM_FMTLIST(FMT)
#    endif

// Disable some of MSVC most aggressive Debug runtime checks in function header/footer (used in some simple/low-level
// functions)
#    if defined(_MSC_VER) && !defined(__clang__) && !defined(IMGUI_DEBUG_PARANOID)
#        define IM_MSVC_RUNTIME_CHECKS_OFF \
            __pragma(runtime_checks("", off)) __pragma(check_stack(off)) __pragma(strict_gs_check(push, off))
#        define IM_MSVC_RUNTIME_CHECKS_RESTORE \
            __pragma(runtime_checks("", restore)) __pragma(check_stack()) __pragma(strict_gs_check(pop))
#    else
#        define IM_MSVC_RUNTIME_CHECKS_OFF
#        define IM_MSVC_RUNTIME_CHECKS_RESTORE
#    endif

// Warnings
#    ifdef _MSC_VER
#        pragma warning(push)
#        pragma warning(disable : 26495)  // [Static Analyzer] Variable 'XXX' is uninitialized. Always initialize a
                                          // member variable (type.6).
#    endif
#    if defined(__clang__)
#        pragma clang diagnostic push
#        pragma clang diagnostic ignored "-Wold-style-cast"
#        if __has_warning("-Wzero-as-null-pointer-constant")
#            pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
#        endif
#    elif defined(__GNUC__)
#        pragma GCC diagnostic push
#        pragma GCC diagnostic ignored "-Wpragmas"  // warning: unknown option after '#pragma GCC diagnostic' kind
#        pragma GCC diagnostic ignored \
            "-Wclass-memaccess"  // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx'
                                 // with no trivial copy-assignment; use assignment or value-initialization instead
#    endif

//-----------------------------------------------------------------------------
// [SECTION] Forward declarations and basic types
//-----------------------------------------------------------------------------

// Forward declarations
struct ImDrawChannel;  // Temporary storage to output draw commands out of order, used by ImDrawListSplitter and
                       // ImDrawList::ChannelsSplit()
struct ImDrawCmd;   // A single draw command within a parent ImDrawList (generally maps to 1 GPU draw call, unless it is
                    // a callback)
struct ImDrawData;  // All draw command lists required to render the frame + pos/size coordinates to use for the
                    // projection matrix.
struct ImDrawList;  // A single draw command list (generally one per window, conceptually you may see this as a dynamic
                    // "mesh" builder)
struct ImDrawListSharedData;  // Data shared among multiple draw lists (typically owned by parent ImGui context, but you
                              // may create one yourself)
struct ImDrawListSplitter;    // Helper to split a draw list into different layers which can be drawn into out of order,
                              // then flattened back.
struct ImDrawVert;            // A single vertex (pos + uv + col = 20 bytes by default. Override layout with
                              // IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT)
struct ImFont;                // Runtime data for a single font within a parent ImFontAtlas
struct ImFontAtlas;  // Runtime data for multiple fonts, bake multiple fonts into a single texture, TTF/OTF font loader
struct ImFontBuilderIO;           // Opaque interface to a font builder (stb_truetype or FreeType).
struct ImFontConfig;              // Configuration data when adding a font or merging fonts
struct ImFontGlyph;               // A single font glyph (code point + coordinates within in ImFontAtlas + offset)
struct ImFontGlyphRangesBuilder;  // Helper to build glyph ranges from text/string data
struct ImColor;  // Helper functions to create a color that can be converted to either u32 or float4 (*OBSOLETE* please
                 // avoid using)
struct ImGuiContext;                // Dear ImGui context (opaque structure, unless including imgui_internal.h)
struct ImGuiIO;                     // Main configuration and I/O between your application and ImGui
struct ImGuiInputTextCallbackData;  // Shared state of InputText() when using custom ImGuiInputTextCallback
                                    // (rare/advanced use)
struct ImGuiListClipper;            // Helper to manually clip large list of items
struct ImGuiOnceUponAFrame;         // Helper for running a block of code not more than once a frame, used by
                                    // IMGUI_ONCE_UPON_A_FRAME macro
struct ImGuiPayload;                // User data payload for drag and drop operations
struct ImGuiPlatformIO;        // Multi-viewport support: interface for Platform/Renderer backends + viewports to render
struct ImGuiPlatformMonitor;   // Multi-viewport support: user-provided bounds for each connected monitor/display. Used
                               // when positioning popups and tooltips to avoid them straddling monitors
struct ImGuiSizeCallbackData;  // Callback data when using SetNextWindowSizeConstraints() (rare/advanced use)
struct ImGuiStorage;           // Helper for key->value storage
struct ImGuiStyle;             // Runtime data for styling/colors
struct ImGuiTableSortSpecs;    // Sorting specifications for a table (often handling sort specs for a single column,
                               // occasionally more)
struct ImGuiTableColumnSortSpecs;  // Sorting specification for one column of a table
struct ImGuiTextBuffer;            // Helper to hold and append into a text buffer (~string builder)
struct ImGuiTextFilter;            // Helper to parse and apply text filters (e.g. "aaaaa[,bbbbb][,ccccc]")
struct ImGuiViewport;     // A Platform Window (always 1 unless multi-viewport are enabled. One per platform window to
                          // output to). In the future may represent Platform Monitor
struct ImGuiWindowClass;  // Window class (rare/advanced uses: provide hints to the platform backend via altered
                          // viewport flags and parent/child info)

// Enums/Flags (declared as int for compatibility with old C++, to allow using as flags and to not pollute the top of
// this file)
// - Tip: Use your programming IDE navigation facilities on the names in the _central column_ below to find the actual
// flags/enum lists!
//   In Visual Studio IDE: CTRL+comma ("Edit.NavigateTo") can follow symbols in comments, whereas CTRL+F12
//   ("Edit.GoToImplementation") cannot. With Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also
//   follow symbols in comments.
typedef int ImGuiCol;       // -> enum ImGuiCol_             // Enum: A color identifier for styling
typedef int ImGuiCond;      // -> enum ImGuiCond_            // Enum: A condition for many Set*() functions
typedef int ImGuiDataType;  // -> enum ImGuiDataType_        // Enum: A primary data type
typedef int ImGuiDir;       // -> enum ImGuiDir_             // Enum: A cardinal direction
typedef int ImGuiKey;       // -> enum ImGuiKey_             // Enum: A key identifier (ImGui-side enum)
typedef int ImGuiNavInput;  // -> enum ImGuiNavInput_        // Enum: An input identifier for navigation
typedef int
    ImGuiMouseButton;  // -> enum ImGuiMouseButton_     // Enum: A mouse button identifier (0=left, 1=right, 2=middle)
typedef int ImGuiMouseCursor;    // -> enum ImGuiMouseCursor_     // Enum: A mouse cursor identifier
typedef int ImGuiSortDirection;  // -> enum ImGuiSortDirection_   // Enum: A sorting direction (ascending or descending)
typedef int ImGuiStyleVar;       // -> enum ImGuiStyleVar_        // Enum: A variable identifier for styling
typedef int ImGuiTableBgTarget;  // -> enum ImGuiTableBgTarget_   // Enum: A color target for TableSetBgColor()
typedef int ImDrawFlags;         // -> enum ImDrawFlags_          // Flags: for ImDrawList functions
typedef int ImDrawListFlags;     // -> enum ImDrawListFlags_      // Flags: for ImDrawList instance
typedef int ImFontAtlasFlags;    // -> enum ImFontAtlasFlags_     // Flags: for ImFontAtlas build
typedef int ImGuiBackendFlags;   // -> enum ImGuiBackendFlags_    // Flags: for io.BackendFlags
typedef int ImGuiButtonFlags;    // -> enum ImGuiButtonFlags_     // Flags: for InvisibleButton()
typedef int ImGuiColorEditFlags;  // -> enum ImGuiColorEditFlags_  // Flags: for ColorEdit4(), ColorPicker4() etc.
typedef int ImGuiConfigFlags;     // -> enum ImGuiConfigFlags_     // Flags: for io.ConfigFlags
typedef int ImGuiComboFlags;      // -> enum ImGuiComboFlags_      // Flags: for BeginCombo()
typedef int ImGuiDockNodeFlags;   // -> enum ImGuiDockNodeFlags_   // Flags: for DockSpace()
typedef int
    ImGuiDragDropFlags;  // -> enum ImGuiDragDropFlags_   // Flags: for BeginDragDropSource(), AcceptDragDropPayload()
typedef int ImGuiFocusedFlags;    // -> enum ImGuiFocusedFlags_    // Flags: for IsWindowFocused()
typedef int ImGuiHoveredFlags;    // -> enum ImGuiHoveredFlags_    // Flags: for IsItemHovered(), IsWindowHovered() etc.
typedef int ImGuiInputTextFlags;  // -> enum ImGuiInputTextFlags_  // Flags: for InputText(), InputTextMultiline()
typedef int ImGuiKeyModFlags;     // -> enum ImGuiKeyModFlags_     // Flags: for io.KeyMods (Ctrl/Shift/Alt/Super)
typedef int
    ImGuiPopupFlags;  // -> enum ImGuiPopupFlags_      // Flags: for OpenPopup*(), BeginPopupContext*(), IsPopupOpen()
typedef int ImGuiSelectableFlags;  // -> enum ImGuiSelectableFlags_ // Flags: for Selectable()
typedef int ImGuiSliderFlags;      // -> enum ImGuiSliderFlags_     // Flags: for DragFloat(), DragInt(), SliderFloat(),
                                   // SliderInt() etc.
typedef int ImGuiTabBarFlags;      // -> enum ImGuiTabBarFlags_     // Flags: for BeginTabBar()
typedef int ImGuiTabItemFlags;     // -> enum ImGuiTabItemFlags_    // Flags: for BeginTabItem()
typedef int ImGuiTableFlags;       // -> enum ImGuiTableFlags_      // Flags: For BeginTable()
typedef int ImGuiTableColumnFlags;  // -> enum ImGuiTableColumnFlags_// Flags: For TableSetupColumn()
typedef int ImGuiTableRowFlags;     // -> enum ImGuiTableRowFlags_   // Flags: For TableNextRow()
typedef int
    ImGuiTreeNodeFlags;  // -> enum ImGuiTreeNodeFlags_   // Flags: for TreeNode(), TreeNodeEx(), CollapsingHeader()
typedef int ImGuiViewportFlags;  // -> enum ImGuiViewportFlags_   // Flags: for ImGuiViewport
typedef int ImGuiWindowFlags;    // -> enum ImGuiWindowFlags_     // Flags: for Begin(), BeginChild()

// Other types
#    ifndef ImTextureID     // ImTextureID [configurable type: override in imconfig.h with '#define ImTextureID xxx']
typedef void* ImTextureID;  // User data for rendering backend to identify a texture. This is whatever to you want it to
                            // be! read the FAQ about ImTextureID for details.
#    endif
typedef unsigned int ImGuiID;  // A unique ID used by widgets, typically hashed from a stack of string.
typedef int (*ImGuiInputTextCallback)(ImGuiInputTextCallbackData* data);  // Callback function for ImGui::InputText()
typedef void (*ImGuiSizeCallback)(
    ImGuiSizeCallbackData* data);  // Callback function for ImGui::SetNextWindowSizeConstraints()
typedef void* (*ImGuiMemAllocFunc)(size_t sz,
                                   void* user_data);           // Function signature for ImGui::SetAllocatorFunctions()
typedef void (*ImGuiMemFreeFunc)(void* ptr, void* user_data);  // Function signature for ImGui::SetAllocatorFunctions()

// Character types
// (we generally use UTF-8 encoded string in the API. This is storage specifically for a decoded character used for
// keyboard input and display)
typedef unsigned short
    ImWchar16;  // A single decoded U16 character/code point. We encode them as multi bytes UTF-8 when used in strings.
typedef unsigned int
    ImWchar32;  // A single decoded U32 character/code point. We encode them as multi bytes UTF-8 when used in strings.
#    ifdef IMGUI_USE_WCHAR32  // ImWchar [configurable type: override in imconfig.h with '#define IMGUI_USE_WCHAR32' to
                              // support Unicode planes 1-16]
typedef ImWchar32 ImWchar;
#    else
typedef ImWchar16 ImWchar;
#    endif

// Basic scalar data types
typedef signed char ImS8;      // 8-bit signed integer
typedef unsigned char ImU8;    // 8-bit unsigned integer
typedef signed short ImS16;    // 16-bit signed integer
typedef unsigned short ImU16;  // 16-bit unsigned integer
typedef signed int ImS32;      // 32-bit signed integer == int
typedef unsigned int ImU32;    // 32-bit unsigned integer (often used to store packed colors)
#    if defined(_MSC_VER) && !defined(__clang__)
typedef signed __int64 ImS64;    // 64-bit signed integer (pre and post C++11 with Visual Studio)
typedef unsigned __int64 ImU64;  // 64-bit unsigned integer (pre and post C++11 with Visual Studio)
#    elif (defined(__clang__) || defined(__GNUC__)) && (__cplusplus < 201100)
#        include <stdint.h>
typedef int64_t ImS64;   // 64-bit signed integer (pre C++11)
typedef uint64_t ImU64;  // 64-bit unsigned integer (pre C++11)
#    else
typedef signed long long ImS64;    // 64-bit signed integer (post C++11)
typedef unsigned long long ImU64;  // 64-bit unsigned integer (post C++11)
#    endif

// 2D vector (often used to store positions or sizes)
IM_MSVC_RUNTIME_CHECKS_OFF
struct ImVec2
{
    float x, y;
    ImVec2() { x = y = 0.0f; }
    ImVec2(float _x, float _y)
    {
        x = _x;
        y = _y;
    }
    float operator[](size_t idx) const
    {
        IM_ASSERT(idx <= 1);
        return (&x)[idx];
    }  // We very rarely use this [] operator, the assert overhead is fine.
    float& operator[](size_t idx)
    {
        IM_ASSERT(idx <= 1);
        return (&x)[idx];
    }  // We very rarely use this [] operator, the assert overhead is fine.
#    ifdef IM_VEC2_CLASS_EXTRA
    IM_VEC2_CLASS_EXTRA  // Define additional constructors and implicit cast operators in imconfig.h to convert back and
                         // forth between your math types and ImVec2.
#    endif
};

// 4D vector (often used to store floating-point colors)
struct ImVec4
{
    float x, y, z, w;
    ImVec4() { x = y = z = w = 0.0f; }
    ImVec4(float _x, float _y, float _z, float _w)
    {
        x = _x;
        y = _y;
        z = _z;
        w = _w;
    }
#    ifdef IM_VEC4_CLASS_EXTRA
    IM_VEC4_CLASS_EXTRA  // Define additional constructors and implicit cast operators in imconfig.h to convert back and
                         // forth between your math types and ImVec4.
#    endif
};
IM_MSVC_RUNTIME_CHECKS_RESTORE

//-----------------------------------------------------------------------------
// [SECTION] Dear ImGui end-user API functions
// (Note that ImGui:: being a namespace, you can add extra ImGui:: functions in your own separate file. Please don't
// modify imgui source files!)
//-----------------------------------------------------------------------------

namespace ImGui
{
// Context creation and access
// - Each context create its own ImFontAtlas by default. You may instance one yourself and pass it to CreateContext() to
// share a font atlas between contexts.
// - DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() +
// SetAllocatorFunctions()
//   for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for
//   details.
IMGUI_API ImGuiContext* CreateContext(ImFontAtlas* shared_font_atlas = NULL);
IMGUI_API void DestroyContext(ImGuiContext* ctx = NULL);  // NULL = destroy current context
IMGUI_API ImGuiContext* GetCurrentContext();
IMGUI_API void SetCurrentContext(ImGuiContext* ctx);

// Main
IMGUI_API ImGuiIO&
GetIO();  // access the IO structure (mouse/keyboard/gamepad inputs, time, various configuration options/flags)
IMGUI_API ImGuiStyle& GetStyle();  // access the Style structure (colors, sizes). Always use PushStyleCol(),
                                   // PushStyleVar() to modify style mid-frame!
IMGUI_API void
NewFrame();  // start a new Dear ImGui frame, you can submit any command from this point until Render()/EndFrame().
IMGUI_API void
EndFrame();  // ends the Dear ImGui frame. automatically called by Render(). If you don't need to render data (skipping
             // rendering) you may call EndFrame() without Render()... but you'll have wasted CPU already! If you don't
             // need to render, better to not create any windows and not call NewFrame() at all!
IMGUI_API void Render();  // ends the Dear ImGui frame, finalize the draw data. You can then get call GetDrawData().
IMGUI_API ImDrawData*
GetDrawData();  // valid after Render() and until the next call to NewFrame(). this is what you have to render.

// Demo, Debug, Information
IMGUI_API void ShowDemoWindow(
    bool* p_open = NULL);  // create Demo window. demonstrate most ImGui features. call this to learn about the library!
                           // try to make it always available in your application!
IMGUI_API void ShowMetricsWindow(bool* p_open = NULL);  // create Metrics/Debugger window. display Dear ImGui internals:
                                                        // windows, draw commands, various internal state, etc.
IMGUI_API void ShowAboutWindow(
    bool* p_open = NULL);  // create About window. display Dear ImGui version, credits and build/system information.
IMGUI_API void ShowStyleEditor(
    ImGuiStyle* ref = NULL);  // add style editor block (not a window). you can pass in a reference ImGuiStyle structure
                              // to compare to, revert to and save to (else it uses the default style)
IMGUI_API bool ShowStyleSelector(
    const char* label);  // add style selector block (not a window), essentially a combo listing the default styles.
IMGUI_API void ShowFontSelector(
    const char* label);  // add font selector block (not a window), essentially a combo listing the loaded fonts.
IMGUI_API void ShowUserGuide();      // add basic help/info block (not a window): how to manipulate ImGui as a end-user
                                     // (mouse/keyboard controls).
IMGUI_API const char* GetVersion();  // get the compiled version string e.g. "1.80 WIP" (essentially the value for
                                     // IMGUI_VERSION from the compiled version of imgui.cpp)

// Styles
IMGUI_API void StyleColorsDark(ImGuiStyle* dst = NULL);     // new, recommended style (default)
IMGUI_API void StyleColorsLight(ImGuiStyle* dst = NULL);    // best used with borders and a custom, thicker font
IMGUI_API void StyleColorsClassic(ImGuiStyle* dst = NULL);  // classic imgui style

// Windows
// - Begin() = push window to the stack and start appending to it. End() = pop window from the stack.
// - Passing 'bool* p_open != NULL' shows a window-closing widget in the upper-right corner of the window,
//   which clicking will set the boolean to false when clicked.
// - You may append multiple times to the same window during the same frame by calling Begin()/End() pairs multiple
// times.
//   Some information such as 'flags' or 'p_open' will only be considered by the first call to Begin().
// - Begin() return false to indicate the window is collapsed or fully clipped, so you may early out and omit submitting
//   anything to the window. Always call a matching End() for each Begin() call, regardless of its return value!
//   [Important: due to legacy reason, this is inconsistent with most other functions such as BeginMenu/EndMenu,
//    BeginPopup/EndPopup, etc. where the EndXXX call should only be called if the corresponding BeginXXX function
//    returned true. Begin and BeginChild are the only odd ones out. Will be fixed in a future update.]
// - Note that the bottom of window stack always contains a window called "Debug".
IMGUI_API bool Begin(const char* name, bool* p_open = NULL, ImGuiWindowFlags flags = 0);
IMGUI_API void End();

// Child Windows
// - Use child windows to begin into a self-contained independent scrolling/clipping regions within a host window. Child
// windows can embed their own child.
// - For each independent axis of 'size': ==0.0f: use remaining host window size / >0.0f: fixed size / <0.0f: use
// remaining window size minus abs(size) / Each axis can use a different mode, e.g. ImVec2(0,400).
// - BeginChild() returns false to indicate the window is collapsed or fully clipped, so you may early out and omit
// submitting anything to the window.
//   Always call a matching EndChild() for each BeginChild() call, regardless of its return value.
//   [Important: due to legacy reason, this is inconsistent with most other functions such as BeginMenu/EndMenu,
//    BeginPopup/EndPopup, etc. where the EndXXX call should only be called if the corresponding BeginXXX function
//    returned true. Begin and BeginChild are the only odd ones out. Will be fixed in a future update.]
IMGUI_API bool BeginChild(const char* str_id,
                          const ImVec2& size     = ImVec2(0, 0),
                          bool border            = false,
                          ImGuiWindowFlags flags = 0);
IMGUI_API bool BeginChild(ImGuiID id,
                          const ImVec2& size     = ImVec2(0, 0),
                          bool border            = false,
                          ImGuiWindowFlags flags = 0);
IMGUI_API void EndChild();

// Windows Utilities
// - 'current window' = the window we are appending into while inside a Begin()/End() block. 'next window' = next window
// we will Begin() into.
IMGUI_API bool IsWindowAppearing();
IMGUI_API bool IsWindowCollapsed();
IMGUI_API bool IsWindowFocused(ImGuiFocusedFlags flags = 0);  // is current window focused? or its root/child, depending
                                                              // on flags. see flags for options.
IMGUI_API bool IsWindowHovered(
    ImGuiHoveredFlags flags =
        0);  // is current window hovered (and typically: not blocked by a popup/modal)? see flags for options. NB: If
             // you are trying to check whether your mouse should be dispatched to imgui or to your app, you should use
             // the 'io.WantCaptureMouse' boolean for that! Please read the FAQ!
IMGUI_API ImDrawList*
GetWindowDrawList();  // get draw list associated to the current window, to append your own drawing primitives
IMGUI_API float GetWindowDpiScale();  // get DPI scale currently associated to the current window's viewport.
IMGUI_API ImVec2 GetWindowPos();      // get current window position in screen space (useful if you want to do your own
                                      // drawing via the DrawList API)
IMGUI_API ImVec2 GetWindowSize();     // get current window size
IMGUI_API float GetWindowWidth();     // get current window width (shortcut for GetWindowSize().x)
IMGUI_API float GetWindowHeight();    // get current window height (shortcut for GetWindowSize().y)
IMGUI_API ImGuiViewport* GetWindowViewport();  // get viewport currently associated to the current window.

// Window manipulation
// - Prefer using SetNextXXX functions (before Begin) rather that SetXXX functions (after Begin).
IMGUI_API void SetNextWindowPos(const ImVec2& pos,
                                ImGuiCond cond      = 0,
                                const ImVec2& pivot = ImVec2(0,
                                                             0));  // set next window position. call before Begin(). use
                                                                   // pivot=(0.5f,0.5f) to center on given point, etc.
IMGUI_API void SetNextWindowSize(const ImVec2& size,
                                 ImGuiCond cond = 0);  // set next window size. set axis to 0.0f to force an auto-fit on
                                                       // this axis. call before Begin()
IMGUI_API void SetNextWindowSizeConstraints(
    const ImVec2& size_min,
    const ImVec2& size_max,
    ImGuiSizeCallback custom_callback = NULL,
    void* custom_callback_data =
        NULL);  // set next window size limits. use -1,-1 on either X/Y axis to preserve the current size. Sizes will be
                // rounded down. Use callback to apply non-trivial programmatic constraints.
IMGUI_API void SetNextWindowContentSize(
    const ImVec2& size);  // set next window content size (~ scrollable client area, which enforce the range of
                          // scrollbars). Not including window decorations (title bar, menu bar, etc.) nor
                          // WindowPadding. set an axis to 0.0f to leave it automatic. call before Begin()
IMGUI_API void SetNextWindowCollapsed(bool collapsed,
                                      ImGuiCond cond = 0);  // set next window collapsed state. call before Begin()
IMGUI_API void SetNextWindowFocus();  // set next window to be focused / top-most. call before Begin()
IMGUI_API void SetNextWindowBgAlpha(
    float alpha);  // set next window background color alpha. helper to easily override the Alpha component of
                   // ImGuiCol_WindowBg/ChildBg/PopupBg. you may also use ImGuiWindowFlags_NoBackground.
IMGUI_API void SetNextWindowViewport(ImGuiID viewport_id);  // set next window viewport
IMGUI_API void SetWindowPos(
    const ImVec2& pos,
    ImGuiCond cond = 0);  // (not recommended) set current window position - call within Begin()/End(). prefer using
                          // SetNextWindowPos(), as this may incur tearing and side-effects.
IMGUI_API void SetWindowSize(
    const ImVec2& size,
    ImGuiCond cond =
        0);  // (not recommended) set current window size - call within Begin()/End(). set to ImVec2(0, 0) to force an
             // auto-fit. prefer using SetNextWindowSize(), as this may incur tearing and minor side-effects.
IMGUI_API void SetWindowCollapsed(bool collapsed,
                                  ImGuiCond cond = 0);  // (not recommended) set current window collapsed state. prefer
                                                        // using SetNextWindowCollapsed().
IMGUI_API void
SetWindowFocus();  // (not recommended) set current window to be focused / top-most. prefer using SetNextWindowFocus().
IMGUI_API void SetWindowFontScale(float scale);  // [OBSOLETE] set font scale. Adjust IO.FontGlobalScale if you want to
                                                 // scale all windows. This is an old API! For correct scaling, prefer
                                                 // to reload font + rebuild ImFontAtlas + call style.ScaleAllSizes().
IMGUI_API void SetWindowPos(const char* name, const ImVec2& pos, ImGuiCond cond = 0);  // set named window position.
IMGUI_API void SetWindowSize(
    const char* name,
    const ImVec2& size,
    ImGuiCond cond = 0);  // set named window size. set axis to 0.0f to force an auto-fit on this axis.
IMGUI_API void SetWindowCollapsed(const char* name,
                                  bool collapsed,
                                  ImGuiCond cond = 0);  // set named window collapsed state
IMGUI_API void SetWindowFocus(
    const char* name);  // set named window to be focused / top-most. use NULL to remove focus.

// Content region
// - Retrieve available space from a given point. GetContentRegionAvail() is frequently useful.
// - Those functions are bound to be redesigned (they are confusing, incomplete and the Min/Max return values are in
// local window coordinates which increases confusion)
IMGUI_API ImVec2 GetContentRegionAvail();  // == GetContentRegionMax() - GetCursorPos()
IMGUI_API ImVec2 GetContentRegionMax();  // current content boundaries (typically window boundaries including scrolling,
                                         // or current column boundaries), in windows coordinates
IMGUI_API ImVec2 GetWindowContentRegionMin();   // content boundaries min (roughly (0,0)-Scroll), in window coordinates
IMGUI_API ImVec2 GetWindowContentRegionMax();   // content boundaries max (roughly (0,0)+Size-Scroll) where Size can be
                                                // override with SetNextWindowContentSize(), in window coordinates
IMGUI_API float GetWindowContentRegionWidth();  //

// Windows Scrolling
IMGUI_API float GetScrollX();               // get scrolling amount [0 .. GetScrollMaxX()]
IMGUI_API float GetScrollY();               // get scrolling amount [0 .. GetScrollMaxY()]
IMGUI_API void SetScrollX(float scroll_x);  // set scrolling amount [0 .. GetScrollMaxX()]
IMGUI_API void SetScrollY(float scroll_y);  // set scrolling amount [0 .. GetScrollMaxY()]
IMGUI_API float GetScrollMaxX();  // get maximum scrolling amount ~~ ContentSize.x - WindowSize.x - DecorationsSize.x
IMGUI_API float GetScrollMaxY();  // get maximum scrolling amount ~~ ContentSize.y - WindowSize.y - DecorationsSize.y
IMGUI_API void SetScrollHereX(
    float center_x_ratio = 0.5f);  // adjust scrolling amount to make current cursor position visible.
                                   // center_x_ratio=0.0: left, 0.5: center, 1.0: right. When using to make a
                                   // "default/current item" visible, consider using SetItemDefaultFocus() instead.
IMGUI_API void SetScrollHereY(
    float center_y_ratio = 0.5f);  // adjust scrolling amount to make current cursor position visible.
                                   // center_y_ratio=0.0: top, 0.5: center, 1.0: bottom. When using to make a
                                   // "default/current item" visible, consider using SetItemDefaultFocus() instead.
IMGUI_API void SetScrollFromPosX(
    float local_x,
    float center_x_ratio = 0.5f);  // adjust scrolling amount to make given position visible. Generally
                                   // GetCursorStartPos() + offset to compute a valid position.
IMGUI_API void SetScrollFromPosY(
    float local_y,
    float center_y_ratio = 0.5f);  // adjust scrolling amount to make given position visible. Generally
                                   // GetCursorStartPos() + offset to compute a valid position.

// Parameters stacks (shared)
IMGUI_API void PushFont(ImFont* font);  // use NULL as a shortcut to push default font
IMGUI_API void PopFont();
IMGUI_API void PushStyleColor(
    ImGuiCol idx,
    ImU32 col);  // modify a style color. always use this if you modify the style after NewFrame().
IMGUI_API void PushStyleColor(ImGuiCol idx, const ImVec4& col);
IMGUI_API void PopStyleColor(int count = 1);
IMGUI_API void PushStyleVar(
    ImGuiStyleVar idx,
    float val);  // modify a style float variable. always use this if you modify the style after NewFrame().
IMGUI_API void PushStyleVar(
    ImGuiStyleVar idx,
    const ImVec2& val);  // modify a style ImVec2 variable. always use this if you modify the style after NewFrame().
IMGUI_API void PopStyleVar(int count = 1);
IMGUI_API void PushAllowKeyboardFocus(
    bool allow_keyboard_focus);  // == tab stop enable. Allow focusing using TAB/Shift-TAB, enabled by default but you
                                 // can disable it for certain widgets
IMGUI_API void PopAllowKeyboardFocus();
IMGUI_API void PushButtonRepeat(
    bool repeat);  // in 'repeat' mode, Button*() functions return repeated true in a typematic manner (using
                   // io.KeyRepeatDelay/io.KeyRepeatRate setting). Note that you can call IsItemActive() after any
                   // Button() to tell if the button is held in the current frame.
IMGUI_API void PopButtonRepeat();

// Parameters stacks (current window)
IMGUI_API void PushItemWidth(
    float item_width);  // push width of items for common large "item+label" widgets. >0.0f: width in pixels, <0.0f
                        // align xx pixels to the right of window (so -FLT_MIN always align width to the right side).
IMGUI_API void PopItemWidth();
IMGUI_API void SetNextItemWidth(
    float item_width);  // set width of the _next_ common large "item+label" widget. >0.0f: width in pixels, <0.0f align
                        // xx pixels to the right of window (so -FLT_MIN always align width to the right side)
IMGUI_API float CalcItemWidth();  // width of item given pushed settings and current cursor position. NOT necessarily
                                  // the width of last item unlike most 'Item' functions.
IMGUI_API void PushTextWrapPos(
    float wrap_local_pos_x =
        0.0f);  // push word-wrapping position for Text*() commands. < 0.0f: no wrapping; 0.0f: wrap to end of window
                // (or column); > 0.0f: wrap at 'wrap_pos_x' position in window local space
IMGUI_API void PopTextWrapPos();

// Style read access
// - Use the style editor (ShowStyleEditor() function) to interactively see what the colors are)
IMGUI_API ImFont* GetFont();    // get current font
IMGUI_API float GetFontSize();  // get current font size (= height in pixels) of current font with current scale applied
IMGUI_API ImVec2
GetFontTexUvWhitePixel();  // get UV coordinate for a while pixel, useful to draw custom shapes via the ImDrawList API
IMGUI_API ImU32
GetColorU32(ImGuiCol idx,
            float alpha_mul = 1.0f);  // retrieve given style color with style alpha applied and optional extra alpha
                                      // multiplier, packed as a 32-bit value suitable for ImDrawList
IMGUI_API ImU32 GetColorU32(const ImVec4& col);  // retrieve given color with style alpha applied, packed as a 32-bit
                                                 // value suitable for ImDrawList
IMGUI_API ImU32 GetColorU32(
    ImU32 col);  // retrieve given color with style alpha applied, packed as a 32-bit value suitable for ImDrawList
IMGUI_API const ImVec4& GetStyleColorVec4(
    ImGuiCol idx);  // retrieve style color as stored in ImGuiStyle structure. use to feed back into PushStyleColor(),
                    // otherwise use GetColorU32() to get style color with style alpha baked in.

// Cursor / Layout
// - By "cursor" we mean the current output position.
// - The typical widget behavior is to output themselves at the current cursor position, then move the cursor one line
// down.
// - You can call SameLine() between widgets to undo the last carriage return and output at the right of the preceding
// widget.
// - Attention! We currently have inconsistencies between window-local and absolute positions we will aim to fix with
// future API:
//    Window-local coordinates:   SameLine(), GetCursorPos(), SetCursorPos(), GetCursorStartPos(),
//    GetContentRegionMax(), GetWindowContentRegion*(), PushTextWrapPos() Absolute coordinate: GetCursorScreenPos(),
//    SetCursorScreenPos(), all ImDrawList:: functions.
IMGUI_API void Separator();  // separator, generally horizontal. inside a menu bar or in horizontal layout mode, this
                             // becomes a vertical separator.
IMGUI_API void SameLine(float offset_from_start_x = 0.0f,
                        float spacing = -1.0f);  // call between widgets or groups to layout them horizontally. X
                                                 // position given in window coordinates.
IMGUI_API void NewLine();  // undo a SameLine() or force a new line when in an horizontal-layout context.
IMGUI_API void Spacing();  // add vertical spacing.
IMGUI_API void Dummy(const ImVec2& size);  // add a dummy item of given size. unlike InvisibleButton(), Dummy() won't
                                           // take the mouse click or be navigable into.
IMGUI_API void Indent(float indent_w = 0.0f);    // move content position toward the right, by indent_w, or
                                                 // style.IndentSpacing if indent_w <= 0
IMGUI_API void Unindent(float indent_w = 0.0f);  // move content position back to the left, by indent_w, or
                                                 // style.IndentSpacing if indent_w <= 0
IMGUI_API void BeginGroup();                     // lock horizontal starting position
IMGUI_API void
EndGroup();  // unlock horizontal starting position + capture the whole group bounding box into one "item" (so you can
             // use IsItemHovered() or layout primitives such as SameLine() on whole group, etc.)
IMGUI_API ImVec2 GetCursorPos();  // cursor position in window coordinates (relative to window position)
IMGUI_API float GetCursorPosX();  //   (some functions are using window-relative coordinates, such as: GetCursorPos,
                                  //   GetCursorStartPos, GetContentRegionMax, GetWindowContentRegion* etc.
IMGUI_API float GetCursorPosY();  //    other functions such as GetCursorScreenPos or everything in ImDrawList::
IMGUI_API void SetCursorPos(const ImVec2& local_pos);  //    are using the main, absolute coordinate system.
IMGUI_API void SetCursorPosX(float local_x);  //    GetWindowPos() + GetCursorPos() == GetCursorScreenPos() etc.)
IMGUI_API void SetCursorPosY(float local_y);  //
IMGUI_API ImVec2 GetCursorStartPos();         // initial cursor position in window coordinates
IMGUI_API ImVec2
GetCursorScreenPos();  // cursor position in absolute coordinates (useful to work with ImDrawList API). generally
                       // top-left == GetMainViewport()->Pos == (0,0) in single viewport mode, and bottom-right ==
                       // GetMainViewport()->Pos+Size == io.DisplaySize in single-viewport mode.
IMGUI_API void SetCursorScreenPos(const ImVec2& pos);  // cursor position in absolute coordinates
IMGUI_API void
AlignTextToFramePadding();  // vertically align upcoming text baseline to FramePadding.y so that it will align properly
                            // to regularly framed items (call if you have text on a line before a framed item)
IMGUI_API float GetTextLineHeight();             // ~ FontSize
IMGUI_API float GetTextLineHeightWithSpacing();  // ~ FontSize + style.ItemSpacing.y (distance in pixels between 2
                                                 // consecutive lines of text)
IMGUI_API float GetFrameHeight();                // ~ FontSize + style.FramePadding.y * 2
IMGUI_API float GetFrameHeightWithSpacing();  // ~ FontSize + style.FramePadding.y * 2 + style.ItemSpacing.y (distance
                                              // in pixels between 2 consecutive lines of framed widgets)

// ID stack/scopes
// Read the FAQ (docs/FAQ.md or http://dearimgui.org/faq) for more details about how ID are handled in dear imgui.
// - Those questions are answered and impacted by understanding of the ID stack system:
//   - "Q: Why is my widget not reacting when I click on it?"
//   - "Q: How can I have widgets with an empty label?"
//   - "Q: How can I have multiple widgets with the same label?"
// - Short version: ID are hashes of the entire ID stack. If you are creating widgets in a loop you most likely
//   want to push a unique identifier (e.g. object pointer, loop index) to uniquely differentiate them.
// - You can also use the "Label##foobar" syntax within widget label to distinguish them from each others.
// - In this header file we use the "label"/"name" terminology to denote a string that will be displayed + used as an
// ID,
//   whereas "str_id" denote a string that is only used as an ID and not normally displayed.
IMGUI_API void PushID(const char* str_id);  // push string into the ID stack (will hash string).
IMGUI_API void PushID(const char* str_id_begin,
                      const char* str_id_end);  // push string into the ID stack (will hash string).
IMGUI_API void PushID(const void* ptr_id);      // push pointer into the ID stack (will hash pointer).
IMGUI_API void PushID(int int_id);              // push integer into the ID stack (will hash integer).
IMGUI_API void PopID();                         // pop from the ID stack.
IMGUI_API ImGuiID GetID(const char* str_id);  // calculate unique ID (hash of whole ID stack + given parameter). e.g. if
                                              // you want to query into ImGuiStorage yourself
IMGUI_API ImGuiID GetID(const char* str_id_begin, const char* str_id_end);
IMGUI_API ImGuiID GetID(const void* ptr_id);

// Widgets: Text
IMGUI_API void TextUnformatted(
    const char* text,
    const char* text_end =
        NULL);  // raw text without formatting. Roughly equivalent to Text("%s", text) but: A) doesn't require null
                // terminated string if 'text_end' is specified, B) it's faster, no memory copy is done, no buffer size
                // limits, recommended for long chunks of text.
IMGUI_API void Text(const char* fmt, ...) IM_FMTARGS(1);  // formatted text
IMGUI_API void TextV(const char* fmt, va_list args) IM_FMTLIST(1);
IMGUI_API void TextColored(const ImVec4& col, const char* fmt, ...)
    IM_FMTARGS(2);  // shortcut for PushStyleColor(ImGuiCol_Text, col); Text(fmt, ...); PopStyleColor();
IMGUI_API void TextColoredV(const ImVec4& col, const char* fmt, va_list args) IM_FMTLIST(2);
IMGUI_API void TextDisabled(const char* fmt, ...)
    IM_FMTARGS(1);  // shortcut for PushStyleColor(ImGuiCol_Text, style.Colors[ImGuiCol_TextDisabled]); Text(fmt, ...);
                    // PopStyleColor();
IMGUI_API void TextDisabledV(const char* fmt, va_list args) IM_FMTLIST(1);
IMGUI_API void TextWrapped(const char* fmt, ...)
    IM_FMTARGS(1);  // shortcut for PushTextWrapPos(0.0f); Text(fmt, ...); PopTextWrapPos();. Note that this won't work
                    // on an auto-resizing window if there's no other widgets to extend the window width, yoy may need
                    // to set a size using SetNextWindowSize().
IMGUI_API void TextWrappedV(const char* fmt, va_list args) IM_FMTLIST(1);
IMGUI_API void LabelText(const char* label, const char* fmt, ...)
    IM_FMTARGS(2);  // display text+label aligned the same way as value+label widgets
IMGUI_API void LabelTextV(const char* label, const char* fmt, va_list args) IM_FMTLIST(2);
IMGUI_API void BulletText(const char* fmt, ...) IM_FMTARGS(1);  // shortcut for Bullet()+Text()
IMGUI_API void BulletTextV(const char* fmt, va_list args) IM_FMTLIST(1);

// Widgets: Main
// - Most widgets return true when the value has been changed or when pressed/selected
// - You may also use one of the many IsItemXXX functions (e.g. IsItemActive, IsItemHovered, etc.) to query widget
// state.
IMGUI_API bool Button(const char* label, const ImVec2& size = ImVec2(0, 0));  // button
IMGUI_API bool SmallButton(const char* label);  // button with FramePadding=(0,0) to easily embed within text
IMGUI_API bool InvisibleButton(
    const char* str_id,
    const ImVec2& size,
    ImGuiButtonFlags flags = 0);  // flexible button behavior without the visuals, frequently useful to build custom
                                  // behaviors using the public api (along with IsItemActive, IsItemHovered, etc.)
IMGUI_API bool ArrowButton(const char* str_id, ImGuiDir dir);  // square button with an arrow shape
IMGUI_API void Image(ImTextureID user_texture_id,
                     const ImVec2& size,
                     const ImVec2& uv0        = ImVec2(0, 0),
                     const ImVec2& uv1        = ImVec2(1, 1),
                     const ImVec4& tint_col   = ImVec4(1, 1, 1, 1),
                     const ImVec4& border_col = ImVec4(0, 0, 0, 0));
IMGUI_API bool ImageButton(ImTextureID user_texture_id,
                           const ImVec2& size,
                           const ImVec2& uv0      = ImVec2(0, 0),
                           const ImVec2& uv1      = ImVec2(1, 1),
                           int frame_padding      = -1,
                           const ImVec4& bg_col   = ImVec4(0, 0, 0, 0),
                           const ImVec4& tint_col = ImVec4(1, 1, 1, 1));  // <0 frame_padding uses default frame padding
                                                                          // settings. 0 for no padding
IMGUI_API bool Checkbox(const char* label, bool* v);
IMGUI_API bool CheckboxFlags(const char* label, int* flags, int flags_value);
IMGUI_API bool CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value);
IMGUI_API bool RadioButton(const char* label,
                           bool active);  // use with e.g. if (RadioButton("one", my_value==1)) { my_value = 1; }
IMGUI_API bool RadioButton(const char* label,
                           int* v,
                           int v_button);  // shortcut to handle the above pattern when value is an integer
IMGUI_API void ProgressBar(float fraction, const ImVec2& size_arg = ImVec2(-FLT_MIN, 0), const char* overlay = NULL);
IMGUI_API void Bullet();  // draw a small circle + keep the cursor on the same line. advance cursor x position by
                          // GetTreeNodeToLabelSpacing(), same distance that TreeNode() uses

// Widgets: Combo Box
// - The BeginCombo()/EndCombo() api allows you to manage your contents and selection state however you want it, by
// creating e.g. Selectable() items.
// - The old Combo() api are helpers over BeginCombo()/EndCombo() which are kept available for convenience purpose. This
// is analogous to how ListBox are created.
IMGUI_API bool BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags = 0);
IMGUI_API void EndCombo();  // only call EndCombo() if BeginCombo() returns true!
IMGUI_API bool Combo(const char* label,
                     int* current_item,
                     const char* const items[],
                     int items_count,
                     int popup_max_height_in_items = -1);
IMGUI_API bool Combo(const char* label,
                     int* current_item,
                     const char* items_separated_by_zeros,
                     int popup_max_height_in_items = -1);  // Separate items with \0 within a string, end item-list with
                                                           // \0\0. e.g. "One\0Two\0Three\0"
IMGUI_API bool Combo(const char* label,
                     int* current_item,
                     bool (*items_getter)(void* data, int idx, const char** out_text),
                     void* data,
                     int items_count,
                     int popup_max_height_in_items = -1);

// Widgets: Drag Sliders
// - CTRL+Click on any drag box to turn them into an input box. Manually input values aren't clamped and can go
// off-bounds.
// - For all the Float2/Float3/Float4/Int2/Int3/Int4 versions of every functions, note that a 'float v[X]' function
// argument is the same as 'float* v', the array syntax is just a way to document the number of elements that are
// expected to be accessible. You can pass address of your first element out of a contiguous set, e.g. &myvector.x
// - Adjust format string to decorate the value with a prefix, a suffix, or adapt the editing and display precision e.g.
// "%.3f" -> 1.234; "%5.2f secs" -> 01.23 secs; "Biscuit: %.0f" -> Biscuit: 1; etc.
// - Format string may also be set to NULL or use the default format ("%f" or "%d").
// - Speed are per-pixel of mouse movement (v_speed=0.2f: mouse needs to move by 5 pixels to increase value by 1). For
// gamepad/keyboard navigation, minimum speed is Max(v_speed, minimum_step_at_given_precision).
// - Use v_min < v_max to clamp edits to given limits. Note that CTRL+Click manual input can override those limits.
// - Use v_max = FLT_MAX / INT_MAX etc to avoid clamping to a maximum, same with v_min = -FLT_MAX / INT_MIN to avoid
// clamping to a minimum.
// - We use the same sets of flags for DragXXX() and SliderXXX() functions as the features are the same and it makes it
// easier to swap them.
// - Legacy: Pre-1.78 there are DragXXX() function signatures that takes a final `float power=1.0f' argument instead of
// the `ImGuiSliderFlags flags=0' argument.
//   If you get a warning converting a float to ImGuiSliderFlags, read https://github.com/ocornut/imgui/issues/3361
IMGUI_API bool DragFloat(const char* label,
                         float* v,
                         float v_speed          = 1.0f,
                         float v_min            = 0.0f,
                         float v_max            = 0.0f,
                         const char* format     = "%.3f",
                         ImGuiSliderFlags flags = 0);  // If v_min >= v_max we have no bound
IMGUI_API bool DragFloat2(const char* label,
                          float v[2],
                          float v_speed          = 1.0f,
                          float v_min            = 0.0f,
                          float v_max            = 0.0f,
                          const char* format     = "%.3f",
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool DragFloat3(const char* label,
                          float v[3],
                          float v_speed          = 1.0f,
                          float v_min            = 0.0f,
                          float v_max            = 0.0f,
                          const char* format     = "%.3f",
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool DragFloat4(const char* label,
                          float v[4],
                          float v_speed          = 1.0f,
                          float v_min            = 0.0f,
                          float v_max            = 0.0f,
                          const char* format     = "%.3f",
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool DragFloatRange2(const char* label,
                               float* v_current_min,
                               float* v_current_max,
                               float v_speed          = 1.0f,
                               float v_min            = 0.0f,
                               float v_max            = 0.0f,
                               const char* format     = "%.3f",
                               const char* format_max = NULL,
                               ImGuiSliderFlags flags = 0);
IMGUI_API bool DragInt(const char* label,
                       int* v,
                       float v_speed          = 1.0f,
                       int v_min              = 0,
                       int v_max              = 0,
                       const char* format     = "%d",
                       ImGuiSliderFlags flags = 0);  // If v_min >= v_max we have no bound
IMGUI_API bool DragInt2(const char* label,
                        int v[2],
                        float v_speed          = 1.0f,
                        int v_min              = 0,
                        int v_max              = 0,
                        const char* format     = "%d",
                        ImGuiSliderFlags flags = 0);
IMGUI_API bool DragInt3(const char* label,
                        int v[3],
                        float v_speed          = 1.0f,
                        int v_min              = 0,
                        int v_max              = 0,
                        const char* format     = "%d",
                        ImGuiSliderFlags flags = 0);
IMGUI_API bool DragInt4(const char* label,
                        int v[4],
                        float v_speed          = 1.0f,
                        int v_min              = 0,
                        int v_max              = 0,
                        const char* format     = "%d",
                        ImGuiSliderFlags flags = 0);
IMGUI_API bool DragIntRange2(const char* label,
                             int* v_current_min,
                             int* v_current_max,
                             float v_speed          = 1.0f,
                             int v_min              = 0,
                             int v_max              = 0,
                             const char* format     = "%d",
                             const char* format_max = NULL,
                             ImGuiSliderFlags flags = 0);
IMGUI_API bool DragScalar(const char* label,
                          ImGuiDataType data_type,
                          void* p_data,
                          float v_speed          = 1.0f,
                          const void* p_min      = NULL,
                          const void* p_max      = NULL,
                          const char* format     = NULL,
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool DragScalarN(const char* label,
                           ImGuiDataType data_type,
                           void* p_data,
                           int components,
                           float v_speed          = 1.0f,
                           const void* p_min      = NULL,
                           const void* p_max      = NULL,
                           const char* format     = NULL,
                           ImGuiSliderFlags flags = 0);

// Widgets: Regular Sliders
// - CTRL+Click on any slider to turn them into an input box. Manually input values aren't clamped and can go
// off-bounds.
// - Adjust format string to decorate the value with a prefix, a suffix, or adapt the editing and display precision e.g.
// "%.3f" -> 1.234; "%5.2f secs" -> 01.23 secs; "Biscuit: %.0f" -> Biscuit: 1; etc.
// - Format string may also be set to NULL or use the default format ("%f" or "%d").
// - Legacy: Pre-1.78 there are SliderXXX() function signatures that takes a final `float power=1.0f' argument instead
// of the `ImGuiSliderFlags flags=0' argument.
//   If you get a warning converting a float to ImGuiSliderFlags, read https://github.com/ocornut/imgui/issues/3361
IMGUI_API bool SliderFloat(const char* label,
                           float* v,
                           float v_min,
                           float v_max,
                           const char* format     = "%.3f",
                           ImGuiSliderFlags flags = 0);  // adjust format to decorate the value with a prefix or a
                                                         // suffix for in-slider labels or unit display.
IMGUI_API bool SliderFloat2(const char* label,
                            float v[2],
                            float v_min,
                            float v_max,
                            const char* format     = "%.3f",
                            ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderFloat3(const char* label,
                            float v[3],
                            float v_min,
                            float v_max,
                            const char* format     = "%.3f",
                            ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderFloat4(const char* label,
                            float v[4],
                            float v_min,
                            float v_max,
                            const char* format     = "%.3f",
                            ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderAngle(const char* label,
                           float* v_rad,
                           float v_degrees_min    = -360.0f,
                           float v_degrees_max    = +360.0f,
                           const char* format     = "%.0f deg",
                           ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderInt(const char* label,
                         int* v,
                         int v_min,
                         int v_max,
                         const char* format     = "%d",
                         ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderInt2(const char* label,
                          int v[2],
                          int v_min,
                          int v_max,
                          const char* format     = "%d",
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderInt3(const char* label,
                          int v[3],
                          int v_min,
                          int v_max,
                          const char* format     = "%d",
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderInt4(const char* label,
                          int v[4],
                          int v_min,
                          int v_max,
                          const char* format     = "%d",
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderScalar(const char* label,
                            ImGuiDataType data_type,
                            void* p_data,
                            const void* p_min,
                            const void* p_max,
                            const char* format     = NULL,
                            ImGuiSliderFlags flags = 0);
IMGUI_API bool SliderScalarN(const char* label,
                             ImGuiDataType data_type,
                             void* p_data,
                             int components,
                             const void* p_min,
                             const void* p_max,
                             const char* format     = NULL,
                             ImGuiSliderFlags flags = 0);
IMGUI_API bool VSliderFloat(const char* label,
                            const ImVec2& size,
                            float* v,
                            float v_min,
                            float v_max,
                            const char* format     = "%.3f",
                            ImGuiSliderFlags flags = 0);
IMGUI_API bool VSliderInt(const char* label,
                          const ImVec2& size,
                          int* v,
                          int v_min,
                          int v_max,
                          const char* format     = "%d",
                          ImGuiSliderFlags flags = 0);
IMGUI_API bool VSliderScalar(const char* label,
                             const ImVec2& size,
                             ImGuiDataType data_type,
                             void* p_data,
                             const void* p_min,
                             const void* p_max,
                             const char* format     = NULL,
                             ImGuiSliderFlags flags = 0);

// Widgets: Input with Keyboard
// - If you want to use InputText() with std::string or any custom dynamic string type, see misc/cpp/imgui_stdlib.h and
// comments in imgui_demo.cpp.
// - Most of the ImGuiInputTextFlags flags are only useful for InputText() and not for InputFloatX, InputIntX,
// InputDouble etc.
IMGUI_API bool InputText(const char* label,
                         char* buf,
                         size_t buf_size,
                         ImGuiInputTextFlags flags       = 0,
                         ImGuiInputTextCallback callback = NULL,
                         void* user_data                 = NULL);
IMGUI_API bool InputTextMultiline(const char* label,
                                  char* buf,
                                  size_t buf_size,
                                  const ImVec2& size              = ImVec2(0, 0),
                                  ImGuiInputTextFlags flags       = 0,
                                  ImGuiInputTextCallback callback = NULL,
                                  void* user_data                 = NULL);
IMGUI_API bool InputTextWithHint(const char* label,
                                 const char* hint,
                                 char* buf,
                                 size_t buf_size,
                                 ImGuiInputTextFlags flags       = 0,
                                 ImGuiInputTextCallback callback = NULL,
                                 void* user_data                 = NULL);
IMGUI_API bool InputFloat(const char* label,
                          float* v,
                          float step                = 0.0f,
                          float step_fast           = 0.0f,
                          const char* format        = "%.3f",
                          ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputFloat2(const char* label, float v[2], const char* format = "%.3f", ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputFloat3(const char* label, float v[3], const char* format = "%.3f", ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputFloat4(const char* label, float v[4], const char* format = "%.3f", ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputInt(const char* label, int* v, int step = 1, int step_fast = 100, ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputInt2(const char* label, int v[2], ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputInt3(const char* label, int v[3], ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputInt4(const char* label, int v[4], ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputDouble(const char* label,
                           double* v,
                           double step               = 0.0,
                           double step_fast          = 0.0,
                           const char* format        = "%.6f",
                           ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputScalar(const char* label,
                           ImGuiDataType data_type,
                           void* p_data,
                           const void* p_step        = NULL,
                           const void* p_step_fast   = NULL,
                           const char* format        = NULL,
                           ImGuiInputTextFlags flags = 0);
IMGUI_API bool InputScalarN(const char* label,
                            ImGuiDataType data_type,
                            void* p_data,
                            int components,
                            const void* p_step        = NULL,
                            const void* p_step_fast   = NULL,
                            const char* format        = NULL,
                            ImGuiInputTextFlags flags = 0);

// Widgets: Color Editor/Picker (tip: the ColorEdit* functions have a little color square that can be left-clicked to
// open a picker, and right-clicked to open an option menu.)
// - Note that in C++ a 'float v[X]' function argument is the _same_ as 'float* v', the array syntax is just a way to
// document the number of elements that are expected to be accessible.
// - You can pass the address of a first float element out of a contiguous structure, e.g. &myvector.x
IMGUI_API bool ColorEdit3(const char* label, float col[3], ImGuiColorEditFlags flags = 0);
IMGUI_API bool ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0);
IMGUI_API bool ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags flags = 0);
IMGUI_API bool ColorPicker4(const char* label,
                            float col[4],
                            ImGuiColorEditFlags flags = 0,
                            const float* ref_col      = NULL);
IMGUI_API bool ColorButton(
    const char* desc_id,
    const ImVec4& col,
    ImGuiColorEditFlags flags = 0,
    ImVec2 size = ImVec2(0, 0));  // display a color square/button, hover for details, return true when pressed.
IMGUI_API void SetColorEditOptions(
    ImGuiColorEditFlags flags);  // initialize current options (generally on application startup) if you want to select
                                 // a default format, picker type, etc. User will be able to change many settings,
                                 // unless you pass the _NoOptions flag to your calls.

// Widgets: Trees
// - TreeNode functions return true when the node is open, in which case you need to also call TreePop() when you are
// finished displaying the tree node contents.
IMGUI_API bool TreeNode(const char* label);
IMGUI_API bool TreeNode(const char* str_id, const char* fmt, ...) IM_FMTARGS(
    2);  // helper variation to easily decorelate the id from the displayed string. Read the FAQ about why and how to
         // use ID. to align arbitrary text at the same level as a TreeNode() you can use Bullet().
IMGUI_API bool TreeNode(const void* ptr_id, const char* fmt, ...) IM_FMTARGS(2);  // "
IMGUI_API bool TreeNodeV(const char* str_id, const char* fmt, va_list args) IM_FMTLIST(2);
IMGUI_API bool TreeNodeV(const void* ptr_id, const char* fmt, va_list args) IM_FMTLIST(2);
IMGUI_API bool TreeNodeEx(const char* label, ImGuiTreeNodeFlags flags = 0);
IMGUI_API bool TreeNodeEx(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, ...) IM_FMTARGS(3);
IMGUI_API bool TreeNodeEx(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, ...) IM_FMTARGS(3);
IMGUI_API bool TreeNodeExV(const char* str_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args) IM_FMTLIST(3);
IMGUI_API bool TreeNodeExV(const void* ptr_id, ImGuiTreeNodeFlags flags, const char* fmt, va_list args) IM_FMTLIST(3);
IMGUI_API void TreePush(const char* str_id);  // ~ Indent()+PushId(). Already called by TreeNode() when returning true,
                                              // but you can call TreePush/TreePop yourself if desired.
IMGUI_API void TreePush(const void* ptr_id = NULL);  // "
IMGUI_API void TreePop();                            // ~ Unindent()+PopId()
IMGUI_API float
GetTreeNodeToLabelSpacing();  // horizontal distance preceding label when using TreeNode*() or Bullet() == (g.FontSize +
                              // style.FramePadding.x*2) for a regular unframed TreeNode
IMGUI_API bool CollapsingHeader(
    const char* label,
    ImGuiTreeNodeFlags flags = 0);  // if returning 'true' the header is open. doesn't indent nor push on ID stack. user
                                    // doesn't have to call TreePop().
IMGUI_API bool CollapsingHeader(
    const char* label,
    bool* p_visible,
    ImGuiTreeNodeFlags flags = 0);  // when 'p_visible != NULL': if '*p_visible==true' display an additional small close
                                    // button on upper right of the header which will set the bool to false when
                                    // clicked, if '*p_visible==false' don't display the header.
IMGUI_API void SetNextItemOpen(bool is_open, ImGuiCond cond = 0);  // set next TreeNode/CollapsingHeader open state.

// Widgets: Selectables
// - A selectable highlights when hovered, and can display another color when selected.
// - Neighbors selectable extend their highlight bounds in order to leave no gap between them. This is so a series of
// selected Selectable appear contiguous.
IMGUI_API bool Selectable(
    const char* label,
    bool selected              = false,
    ImGuiSelectableFlags flags = 0,
    const ImVec2& size =
        ImVec2(0, 0));  // "bool selected" carry the selection state (read-only). Selectable() is clicked is returns
                        // true so you can modify your selection state. size.x==0.0: use remaining width, size.x>0.0:
                        // specify width. size.y==0.0: use label height, size.y>0.0: specify height
IMGUI_API bool Selectable(const char* label,
                          bool* p_selected,
                          ImGuiSelectableFlags flags = 0,
                          const ImVec2& size = ImVec2(0, 0));  // "bool* p_selected" point to the selection state
                                                               // (read-write), as a convenient helper.

// Widgets: List Boxes
// - This is essentially a thin wrapper to using BeginChild/EndChild with some stylistic changes.
// - The BeginListBox()/EndListBox() api allows you to manage your contents and selection state however you want it, by
// creating e.g. Selectable() or any items.
// - The simplified/old ListBox() api are helpers over BeginListBox()/EndListBox() which are kept available for
// convenience purpose. This is analoguous to how Combos are created.
// - Choose frame width:   size.x > 0.0f: custom  /  size.x < 0.0f or -FLT_MIN: right-align   /  size.x = 0.0f
// (default): use current ItemWidth
// - Choose frame height:  size.y > 0.0f: custom  /  size.y < 0.0f or -FLT_MIN: bottom-align  /  size.y = 0.0f
// (default): arbitrary default height which can fit ~7 items
IMGUI_API bool BeginListBox(const char* label, const ImVec2& size = ImVec2(0, 0));  // open a framed scrolling region
IMGUI_API void EndListBox();  // only call EndListBox() if BeginListBox() returned true!
IMGUI_API bool ListBox(const char* label,
                       int* current_item,
                       const char* const items[],
                       int items_count,
                       int height_in_items = -1);
IMGUI_API bool ListBox(const char* label,
                       int* current_item,
                       bool (*items_getter)(void* data, int idx, const char** out_text),
                       void* data,
                       int items_count,
                       int height_in_items = -1);

// Widgets: Data Plotting
// - Consider using ImPlot (https://github.com/epezent/implot)
IMGUI_API void PlotLines(const char* label,
                         const float* values,
                         int values_count,
                         int values_offset        = 0,
                         const char* overlay_text = NULL,
                         float scale_min          = FLT_MAX,
                         float scale_max          = FLT_MAX,
                         ImVec2 graph_size        = ImVec2(0, 0),
                         int stride               = sizeof(float));
IMGUI_API void PlotLines(const char* label,
                         float (*values_getter)(void* data, int idx),
                         void* data,
                         int values_count,
                         int values_offset        = 0,
                         const char* overlay_text = NULL,
                         float scale_min          = FLT_MAX,
                         float scale_max          = FLT_MAX,
                         ImVec2 graph_size        = ImVec2(0, 0));
IMGUI_API void PlotHistogram(const char* label,
                             const float* values,
                             int values_count,
                             int values_offset        = 0,
                             const char* overlay_text = NULL,
                             float scale_min          = FLT_MAX,
                             float scale_max          = FLT_MAX,
                             ImVec2 graph_size        = ImVec2(0, 0),
                             int stride               = sizeof(float));
IMGUI_API void PlotHistogram(const char* label,
                             float (*values_getter)(void* data, int idx),
                             void* data,
                             int values_count,
                             int values_offset        = 0,
                             const char* overlay_text = NULL,
                             float scale_min          = FLT_MAX,
                             float scale_max          = FLT_MAX,
                             ImVec2 graph_size        = ImVec2(0, 0));

// Widgets: Value() Helpers.
// - Those are merely shortcut to calling Text() with a format string. Output single value in "name: value" format (tip:
// freely declare more in your code to handle your types. you can add functions to the ImGui namespace)
IMGUI_API void Value(const char* prefix, bool b);
IMGUI_API void Value(const char* prefix, int v);
IMGUI_API void Value(const char* prefix, unsigned int v);
IMGUI_API void Value(const char* prefix, float v, const char* float_format = NULL);

// Widgets: Menus
// - Use BeginMenuBar() on a window ImGuiWindowFlags_MenuBar to append to its menu bar.
// - Use BeginMainMenuBar() to create a menu bar at the top of the screen and append to it.
// - Use BeginMenu() to create a menu. You can call BeginMenu() multiple time with the same identifier to append more
// items to it.
// - Not that MenuItem() keyboardshortcuts are displayed as a convenience but _not processed_ by Dear ImGui at the
// moment.
IMGUI_API bool
BeginMenuBar();  // append to menu-bar of current window (requires ImGuiWindowFlags_MenuBar flag set on parent window).
IMGUI_API void EndMenuBar();        // only call EndMenuBar() if BeginMenuBar() returns true!
IMGUI_API bool BeginMainMenuBar();  // create and append to a full screen menu-bar.
IMGUI_API void EndMainMenuBar();    // only call EndMainMenuBar() if BeginMainMenuBar() returns true!
IMGUI_API bool BeginMenu(const char* label,
                         bool enabled = true);  // create a sub-menu entry. only call EndMenu() if this returns true!
IMGUI_API void EndMenu();                       // only call EndMenu() if BeginMenu() returns true!
IMGUI_API bool MenuItem(const char* label,
                        const char* shortcut = NULL,
                        bool selected        = false,
                        bool enabled         = true);  // return true when activated.
IMGUI_API bool MenuItem(
    const char* label,
    const char* shortcut,
    bool* p_selected,
    bool enabled = true);  // return true when activated + toggle (*p_selected) if p_selected != NULL

// Tooltips
// - Tooltip are windows following the mouse. They do not take focus away.
IMGUI_API void
BeginTooltip();  // begin/append a tooltip window. to create full-featured tooltip (with any kind of items).
IMGUI_API void EndTooltip();
IMGUI_API void SetTooltip(const char* fmt, ...)
    IM_FMTARGS(1);  // set a text-only tooltip, typically use with ImGui::IsItemHovered(). override any previous call to
                    // SetTooltip().
IMGUI_API void SetTooltipV(const char* fmt, va_list args) IM_FMTLIST(1);

// Popups, Modals
//  - They block normal mouse hovering detection (and therefore most mouse interactions) behind them.
//  - If not modal: they can be closed by clicking anywhere outside them, or by pressing ESCAPE.
//  - Their visibility state (~bool) is held internally instead of being held by the programmer as we are used to with
//  regular Begin*() calls.
//  - The 3 properties above are related: we need to retain popup visibility state in the library because popups may be
//  closed as any time.
//  - You can bypass the hovering restriction by using ImGuiHoveredFlags_AllowWhenBlockedByPopup when calling
//  IsItemHovered() or IsWindowHovered().
//  - IMPORTANT: Popup identifiers are relative to the current ID stack, so OpenPopup and BeginPopup generally needs to
//  be at the same level of the stack.
//    This is sometimes leading to confusing mistakes. May rework this in the future.

// Popups: begin/end functions
//  - BeginPopup(): query popup state, if open start appending into the window. Call EndPopup() afterwards.
//  ImGuiWindowFlags are forwarded to the window.
//  - BeginPopupModal(): block every interactions behind the window, cannot be closed by user, add a dimming background,
//  has a title bar.
IMGUI_API bool BeginPopup(
    const char* str_id,
    ImGuiWindowFlags flags = 0);  // return true if the popup is open, and you can start outputting to it.
IMGUI_API bool BeginPopupModal(
    const char* name,
    bool* p_open           = NULL,
    ImGuiWindowFlags flags = 0);  // return true if the modal is open, and you can start outputting to it.
IMGUI_API void EndPopup();        // only call EndPopup() if BeginPopupXXX() returns true!

// Popups: open/close functions
//  - OpenPopup(): set popup state to open. ImGuiPopupFlags are available for opening options.
//  - If not modal: they can be closed by clicking anywhere outside them, or by pressing ESCAPE.
//  - CloseCurrentPopup(): use inside the BeginPopup()/EndPopup() scope to close manually.
//  - CloseCurrentPopup() is called by default by Selectable()/MenuItem() when activated (FIXME: need some options).
//  - Use ImGuiPopupFlags_NoOpenOverExistingPopup to avoid opening a popup if there's already one at the same level.
//  This is equivalent to e.g. testing for !IsAnyPopupOpen() prior to OpenPopup().
//  - Use IsWindowAppearing() after BeginPopup() to tell if a window just opened.
IMGUI_API void OpenPopup(const char* str_id,
                         ImGuiPopupFlags popup_flags = 0);  // call to mark popup as open (don't call every frame!).
IMGUI_API void OpenPopup(ImGuiID id,
                         ImGuiPopupFlags popup_flags = 0);  // id overload to facilitate calling from nested stacks
IMGUI_API void OpenPopupOnItemClick(
    const char* str_id = NULL,
    ImGuiPopupFlags popup_flags =
        1);  // helper to open popup when clicked on last item. Default to ImGuiPopupFlags_MouseButtonRight == 1. (note:
             // actually triggers on the mouse _released_ event to be consistent with popup behaviors)
IMGUI_API void CloseCurrentPopup();  // manually close the popup we have begin-ed into.

// Popups: open+begin combined functions helpers
//  - Helpers to do OpenPopup+BeginPopup where the Open action is triggered by e.g. hovering an item and right-clicking.
//  - They are convenient to easily create context menus, hence the name.
//  - IMPORTANT: Notice that BeginPopupContextXXX takes ImGuiPopupFlags just like OpenPopup() and unlike BeginPopup().
//  For full consistency, we may add ImGuiWindowFlags to the BeginPopupContextXXX functions in the future.
//  - IMPORTANT: we exceptionally default their flags to 1 (== ImGuiPopupFlags_MouseButtonRight) for backward
//  compatibility with older API taking 'int mouse_button = 1' parameter, so if you add other flags remember to re-add
//  the ImGuiPopupFlags_MouseButtonRight.
IMGUI_API bool BeginPopupContextItem(
    const char* str_id          = NULL,
    ImGuiPopupFlags popup_flags = 1);  // open+begin popup when clicked on last item. Use str_id==NULL to associate the
                                       // popup to previous item. If you want to use that on a non-interactive item such
                                       // as Text() you need to pass in an explicit ID here. read comments in .cpp!
IMGUI_API bool BeginPopupContextWindow(
    const char* str_id          = NULL,
    ImGuiPopupFlags popup_flags = 1);  // open+begin popup when clicked on current window.
IMGUI_API bool BeginPopupContextVoid(
    const char* str_id          = NULL,
    ImGuiPopupFlags popup_flags = 1);  // open+begin popup when clicked in void (where there are no windows).

// Popups: query functions
//  - IsPopupOpen(): return true if the popup is open at the current BeginPopup() level of the popup stack.
//  - IsPopupOpen() with ImGuiPopupFlags_AnyPopupId: return true if any popup is open at the current BeginPopup() level
//  of the popup stack.
//  - IsPopupOpen() with ImGuiPopupFlags_AnyPopupId + ImGuiPopupFlags_AnyPopupLevel: return true if any popup is open.
IMGUI_API bool IsPopupOpen(const char* str_id, ImGuiPopupFlags flags = 0);  // return true if the popup is open.

// Tables
// [BETA API] API may evolve slightly! If you use this, please update to the next version when it comes out!
// - Full-featured replacement for old Columns API.
// - See Demo->Tables for demo code.
// - See top of imgui_tables.cpp for general commentary.
// - See ImGuiTableFlags_ and ImGuiTableColumnFlags_ enums for a description of available flags.
// The typical call flow is:
// - 1. Call BeginTable().
// - 2. Optionally call TableSetupColumn() to submit column name/flags/defaults.
// - 3. Optionally call TableSetupScrollFreeze() to request scroll freezing of columns/rows.
// - 4. Optionally call TableHeadersRow() to submit a header row. Names are pulled from TableSetupColumn() data.
// - 5. Populate contents:
//    - In most situations you can use TableNextRow() + TableSetColumnIndex(N) to start appending into a column.
//    - If you are using tables as a sort of grid, where every columns is holding the same type of contents,
//      you may prefer using TableNextColumn() instead of TableNextRow() + TableSetColumnIndex().
//      TableNextColumn() will automatically wrap-around into the next row if needed.
//    - IMPORTANT: Comparatively to the old Columns() API, we need to call TableNextColumn() for the first column!
//    - Summary of possible call flow:
//        --------------------------------------------------------------------------------------------------------
//        TableNextRow() -> TableSetColumnIndex(0) -> Text("Hello 0") -> TableSetColumnIndex(1) -> Text("Hello 1")  //
//        OK TableNextRow() -> TableNextColumn()      -> Text("Hello 0") -> TableNextColumn()      -> Text("Hello 1") //
//        OK
//                          TableNextColumn()      -> Text("Hello 0") -> TableNextColumn()      -> Text("Hello 1")  //
//                          OK: TableNextColumn() automatically gets to next row!
//        TableNextRow()                           -> Text("Hello 0")                                               //
//        Not OK! Missing TableSetColumnIndex() or TableNextColumn()! Text will not appear!
//        --------------------------------------------------------------------------------------------------------
// - 5. Call EndTable()
IMGUI_API bool BeginTable(const char* str_id,
                          int column,
                          ImGuiTableFlags flags    = 0,
                          const ImVec2& outer_size = ImVec2(0.0f, 0.0f),
                          float inner_width        = 0.0f);
IMGUI_API void EndTable();  // only call EndTable() if BeginTable() returns true!
IMGUI_API void TableNextRow(ImGuiTableRowFlags row_flags = 0,
                            float min_row_height         = 0.0f);  // append into the first cell of a new row.
IMGUI_API bool TableNextColumn();  // append into the next column (or first column of next row if currently in last
                                   // column). Return true when column is visible.
IMGUI_API bool TableSetColumnIndex(
    int column_n);  // append into the specified column. Return true when column is visible.

// Tables: Headers & Columns declaration
// - Use TableSetupColumn() to specify label, resizing policy, default width/weight, id, various other flags etc.
// - Use TableHeadersRow() to create a header row and automatically submit a TableHeader() for each column.
//   Headers are required to perform: reordering, sorting, and opening the context menu.
//   The context menu can also be made available in columns body using ImGuiTableFlags_ContextMenuInBody.
// - You may manually submit headers using TableNextRow() + TableHeader() calls, but this is only useful in
//   some advanced use cases (e.g. adding custom widgets in header row).
// - Use TableSetupScrollFreeze() to lock columns/rows so they stay visible when scrolled.
IMGUI_API void TableSetupColumn(const char* label,
                                ImGuiTableColumnFlags flags = 0,
                                float init_width_or_weight  = 0.0f,
                                ImGuiID user_id             = 0);
IMGUI_API void TableSetupScrollFreeze(int cols, int rows);  // lock columns/rows so they stay visible when scrolled.
IMGUI_API void
TableHeadersRow();  // submit all headers cells based on data provided to TableSetupColumn() + submit context menu
IMGUI_API void TableHeader(const char* label);  // submit one header cell manually (rarely used)

// Tables: Sorting
// - Call TableGetSortSpecs() to retrieve latest sort specs for the table. NULL when not sorting.
// - When 'SpecsDirty == true' you should sort your data. It will be true when sorting specs have changed
//   since last call, or the first time. Make sure to set 'SpecsDirty = false' after sorting, else you may
//   wastefully sort your data every frame!
// - Lifetime: don't hold on this pointer over multiple frames or past any subsequent call to BeginTable().
IMGUI_API ImGuiTableSortSpecs* TableGetSortSpecs();  // get latest sort specs for the table (NULL if not sorting).

// Tables: Miscellaneous functions
// - Functions args 'int column_n' treat the default value of -1 as the same as passing the current column index.
IMGUI_API int TableGetColumnCount();                          // return number of columns (value passed to BeginTable)
IMGUI_API int TableGetColumnIndex();                          // return current column index.
IMGUI_API int TableGetRowIndex();                             // return current row index.
IMGUI_API const char* TableGetColumnName(int column_n = -1);  // return "" if column didn't have a name declared by
                                                              // TableSetupColumn(). Pass -1 to use current column.
IMGUI_API ImGuiTableColumnFlags
TableGetColumnFlags(int column_n = -1);  // return column flags so you can query their Enabled/Visible/Sorted/Hovered
                                         // status flags. Pass -1 to use current column.
IMGUI_API void TableSetColumnEnabled(
    int column_n,
    bool v);  // change user accessible enabled/disabled state of a column. Set to false to hide the column. User can
              // use the context menu to change this themselves (right-click in headers, or right-click in columns body
              // with ImGuiTableFlags_ContextMenuInBody)
IMGUI_API void TableSetBgColor(
    ImGuiTableBgTarget target,
    ImU32 color,
    int column_n = -1);  // change the color of a cell, row, or column. See ImGuiTableBgTarget_ flags for details.

// Legacy Columns API (prefer using Tables!)
// - You can also use SameLine(pos_x) to mimic simplified columns.
IMGUI_API void Columns(int count = 1, const char* id = NULL, bool border = true);
IMGUI_API void NextColumn();     // next column, defaults to current row or next row if the current row is finished
IMGUI_API int GetColumnIndex();  // get current column index
IMGUI_API float GetColumnWidth(int column_index = -1);  // get column width (in pixels). pass -1 to use current column
IMGUI_API void SetColumnWidth(int column_index,
                              float width);  // set column width (in pixels). pass -1 to use current column
IMGUI_API float GetColumnOffset(
    int column_index =
        -1);  // get position of column line (in pixels, from the left side of the contents region). pass -1 to use
              // current column, otherwise 0..GetColumnsCount() inclusive. column 0 is typically 0.0f
IMGUI_API void SetColumnOffset(int column_index,
                               float offset_x);  // set position of column line (in pixels, from the left side of the
                                                 // contents region). pass -1 to use current column
IMGUI_API int GetColumnsCount();

// Tab Bars, Tabs
// Note: Tabs are automatically created by the docking system. Use this to create tab bars/tabs yourself without docking
// being involved.
IMGUI_API bool BeginTabBar(const char* str_id, ImGuiTabBarFlags flags = 0);  // create and append into a TabBar
IMGUI_API void EndTabBar();  // only call EndTabBar() if BeginTabBar() returns true!
IMGUI_API bool BeginTabItem(const char* label,
                            bool* p_open            = NULL,
                            ImGuiTabItemFlags flags = 0);  // create a Tab. Returns true if the Tab is selected.
IMGUI_API void EndTabItem();                               // only call EndTabItem() if BeginTabItem() returns true!
IMGUI_API bool TabItemButton(const char* label,
                             ImGuiTabItemFlags flags = 0);  // create a Tab behaving like a button. return true when
                                                            // clicked. cannot be selected in the tab bar.
IMGUI_API void SetTabItemClosed(
    const char*
        tab_or_docked_window_label);  // notify TabBar or Docking system of a closed tab/window ahead (useful to reduce
                                      // visual flicker on reorderable tab bars). For tab-bar: call after BeginTabBar()
                                      // and before Tab submissions. Otherwise call with a window name.

// Docking
// [BETA API] Enable with io.ConfigFlags |= ImGuiConfigFlags_DockingEnable.
// Note: You can use most Docking facilities without calling any API. You DO NOT need to call DockSpace() to use
// Docking!
// - Drag from window title bar or their tab to dock/undock. Hold SHIFT to disable docking.
// - Drag from window menu button (upper-left button) to undock an entire node (all windows).
// About dockspaces:
// - Use DockSpace() to create an explicit dock node _within_ an existing window. See Docking demo for details.
// - Use DockSpaceOverViewport() to create an explicit dock node covering the screen or a specific viewport.
//   This is often used with ImGuiDockNodeFlags_PassthruCentralNode.
// - Important: Dockspaces need to be submitted _before_ any window they can host. Submit it early in your frame!
// - Important: Dockspaces need to be kept alive if hidden, otherwise windows docked into it will be undocked.
//   e.g. if you have multiple tabs with a dockspace inside each tab: submit the non-visible dockspaces with
//   ImGuiDockNodeFlags_KeepAliveOnly.
IMGUI_API ImGuiID DockSpace(ImGuiID id,
                            const ImVec2& size                   = ImVec2(0, 0),
                            ImGuiDockNodeFlags flags             = 0,
                            const ImGuiWindowClass* window_class = NULL);
IMGUI_API ImGuiID DockSpaceOverViewport(const ImGuiViewport* viewport        = NULL,
                                        ImGuiDockNodeFlags flags             = 0,
                                        const ImGuiWindowClass* window_class = NULL);
IMGUI_API void SetNextWindowDockID(ImGuiID dock_id, ImGuiCond cond = 0);  // set next window dock id
IMGUI_API void SetNextWindowClass(
    const ImGuiWindowClass*
        window_class);  // set next window class (control docking compatibility + provide hints to platform backend via
                        // custom viewport flags and platform parent/child relationship)
IMGUI_API ImGuiID GetWindowDockID();
IMGUI_API bool IsWindowDocked();  // is current window docked into another window?

// Logging/Capture
// - All text output from the interface can be captured into tty/file/clipboard. By default, tree nodes are
// automatically opened during logging.
IMGUI_API void LogToTTY(int auto_open_depth = -1);                                // start logging to tty (stdout)
IMGUI_API void LogToFile(int auto_open_depth = -1, const char* filename = NULL);  // start logging to file
IMGUI_API void LogToClipboard(int auto_open_depth = -1);                          // start logging to OS clipboard
IMGUI_API void LogFinish();                                                       // stop logging (close file, etc.)
IMGUI_API void LogButtons();  // helper to display buttons for logging to tty/file/clipboard
IMGUI_API void LogText(const char* fmt, ...) IM_FMTARGS(1);  // pass text data straight to log (without being displayed)
IMGUI_API void LogTextV(const char* fmt, va_list args) IM_FMTLIST(1);

// Drag and Drop
// - On source items, call BeginDragDropSource(), if it returns true also call SetDragDropPayload() +
// EndDragDropSource().
// - On target candidates, call BeginDragDropTarget(), if it returns true also call AcceptDragDropPayload() +
// EndDragDropTarget().
// - If you stop calling BeginDragDropSource() the payload is preserved however it won't have a preview tooltip (we
// currently display a fallback "..." tooltip, see #1725)
// - An item can be both drag source and drop target.
IMGUI_API bool BeginDragDropSource(
    ImGuiDragDropFlags flags = 0);  // call after submitting an item which may be dragged. when this return true, you
                                    // can call SetDragDropPayload() + EndDragDropSource()
IMGUI_API bool SetDragDropPayload(
    const char* type,
    const void* data,
    size_t sz,
    ImGuiCond cond = 0);  // type is a user defined string of maximum 32 characters. Strings starting with '_' are
                          // reserved for dear imgui internal types. Data is copied and held by imgui.
IMGUI_API void EndDragDropSource();    // only call EndDragDropSource() if BeginDragDropSource() returns true!
IMGUI_API bool BeginDragDropTarget();  // call after submitting an item that may receive a payload. If this returns
                                       // true, you can call AcceptDragDropPayload() + EndDragDropTarget()
IMGUI_API const ImGuiPayload* AcceptDragDropPayload(
    const char* type,
    ImGuiDragDropFlags flags = 0);   // accept contents of a given type. If ImGuiDragDropFlags_AcceptBeforeDelivery is
                                     // set you can peek into the payload before the mouse button is released.
IMGUI_API void EndDragDropTarget();  // only call EndDragDropTarget() if BeginDragDropTarget() returns true!
IMGUI_API const ImGuiPayload*
GetDragDropPayload();  // peek directly into the current payload from anywhere. may return NULL. use
                       // ImGuiPayload::IsDataType() to test for the payload type.

// Disabling [BETA API]
// - Disable all user interactions and dim items visuals (applying style.DisabledAlpha over current colors)
// - BeginDisabled(false) essentially does nothing useful but is provided to facilitate use of boolean expressions. If
// you can avoid calling BeginDisabled(False)/EndDisabled() best to avoid it.
IMGUI_API void BeginDisabled(bool disabled = true);
IMGUI_API void EndDisabled();

// Clipping
// - Mouse hovering is affected by ImGui::PushClipRect() calls, unlike direct calls to ImDrawList::PushClipRect() which
// are render only.
IMGUI_API void PushClipRect(const ImVec2& clip_rect_min,
                            const ImVec2& clip_rect_max,
                            bool intersect_with_current_clip_rect);
IMGUI_API void PopClipRect();

// Focus, Activation
// - Prefer using "SetItemDefaultFocus()" over "if (IsWindowAppearing()) SetScrollHereY()" when applicable to signify
// "this is the default item"
IMGUI_API void SetItemDefaultFocus();  // make last item the default focused item of a window.
IMGUI_API void SetKeyboardFocusHere(
    int offset = 0);  // focus keyboard on the next widget. Use positive 'offset' to access sub components of a multiple
                      // component widget. Use -1 to access previous widget.

// Item/Widgets Utilities and Query Functions
// - Most of the functions are referring to the previous Item that has been submitted.
// - See Demo Window under "Widgets->Querying Status" for an interactive visualization of most of those functions.
IMGUI_API bool IsItemHovered(ImGuiHoveredFlags flags = 0);  // is the last item hovered? (and usable, aka not blocked by
                                                            // a popup, etc.). See ImGuiHoveredFlags for more options.
IMGUI_API bool IsItemActive();   // is the last item active? (e.g. button being held, text field being edited. This will
                                 // continuously return true while holding mouse button on an item. Items that don't
                                 // interact will always return false)
IMGUI_API bool IsItemFocused();  // is the last item focused for keyboard/gamepad navigation?
IMGUI_API bool IsItemClicked(
    ImGuiMouseButton mouse_button =
        0);  // is the last item hovered and mouse clicked on? (**)  == IsMouseClicked(mouse_button) &&
             // IsItemHovered()Important. (**) this it NOT equivalent to the behavior of e.g. Button(). Read comments in
             // function definition.
IMGUI_API bool IsItemVisible();  // is the last item visible? (items may be out of sight because of clipping/scrolling)
IMGUI_API bool IsItemEdited();   // did the last item modify its underlying value this frame? or was pressed? This is
                                 // generally the same as the "bool" return value of many widgets.
IMGUI_API bool IsItemActivated();    // was the last item just made active (item was previously inactive).
IMGUI_API bool IsItemDeactivated();  // was the last item just made inactive (item was previously active). Useful for
                                     // Undo/Redo patterns with widgets that requires continuous editing.
IMGUI_API bool IsItemDeactivatedAfterEdit();  // was the last item just made inactive and made a value change when it
                                              // was active? (e.g. Slider/Drag moved). Useful for Undo/Redo patterns
                                              // with widgets that requires continuous editing. Note that you may get
                                              // false positives (some widgets such as Combo()/ListBox()/Selectable()
                                              // will return true even when clicking an already selected item).
IMGUI_API bool IsItemToggledOpen();           // was the last item open state toggled? set by TreeNode().
IMGUI_API bool IsAnyItemHovered();            // is any item hovered?
IMGUI_API bool IsAnyItemActive();             // is any item active?
IMGUI_API bool IsAnyItemFocused();            // is any item focused?
IMGUI_API ImVec2 GetItemRectMin();            // get upper-left bounding rectangle of the last item (screen space)
IMGUI_API ImVec2 GetItemRectMax();            // get lower-right bounding rectangle of the last item (screen space)
IMGUI_API ImVec2 GetItemRectSize();           // get size of last item
IMGUI_API void SetItemAllowOverlap();  // allow last item to be overlapped by a subsequent item. sometimes useful with
                                       // invisible buttons, selectables, etc. to catch unused area.

// Viewports
// - Currently represents the Platform Window created by the application which is hosting our Dear ImGui windows.
// - In 'docking' branch with multi-viewport enabled, we extend this concept to have multiple active viewports.
// - In the future we will extend this concept further to also represent Platform Monitor and support a "no main
// platform window" operation mode.
IMGUI_API ImGuiViewport* GetMainViewport();  // return primary/default viewport. This can never be NULL.

// Miscellaneous Utilities
IMGUI_API bool IsRectVisible(
    const ImVec2& size);  // test if rectangle (of given size, starting from cursor position) is visible / not clipped.
IMGUI_API bool IsRectVisible(const ImVec2& rect_min,
                             const ImVec2& rect_max);  // test if rectangle (in screen space) is visible / not clipped.
                                                       // to perform coarse clipping on user's side.
IMGUI_API double GetTime();                     // get global imgui time. incremented by io.DeltaTime every frame.
IMGUI_API int GetFrameCount();                  // get global imgui frame count. incremented by 1 every frame.
IMGUI_API ImDrawList* GetBackgroundDrawList();  // get background draw list for the viewport associated to the current
                                                // window. this draw list will be the first rendering one. Useful to
                                                // quickly draw shapes/text behind dear imgui contents.
IMGUI_API ImDrawList*
GetForegroundDrawList();  // get foreground draw list for the viewport associated to the current window. this draw list
                          // will be the last rendered one. Useful to quickly draw shapes/text over dear imgui contents.
IMGUI_API ImDrawList* GetBackgroundDrawList(
    ImGuiViewport* viewport);  // get background draw list for the given viewport. this draw list will be the first
                               // rendering one. Useful to quickly draw shapes/text behind dear imgui contents.
IMGUI_API ImDrawList* GetForegroundDrawList(
    ImGuiViewport* viewport);  // get foreground draw list for the given viewport. this draw list will be the last
                               // rendered one. Useful to quickly draw shapes/text over dear imgui contents.
IMGUI_API ImDrawListSharedData*
GetDrawListSharedData();  // you may use this when creating your own ImDrawList instances.
IMGUI_API const char* GetStyleColorName(
    ImGuiCol idx);  // get a string corresponding to the enum value (for display, saving, etc.).
IMGUI_API void SetStateStorage(ImGuiStorage* storage);  // replace current window storage with our own (if you want to
                                                        // manipulate it yourself, typically clear subsection of it)
IMGUI_API ImGuiStorage* GetStateStorage();
IMGUI_API void CalcListClipping(
    int items_count,
    float items_height,
    int* out_items_display_start,
    int* out_items_display_end);  // calculate coarse clipping for large list of evenly sized items. Prefer using the
                                  // ImGuiListClipper higher-level helper if you can.
IMGUI_API bool BeginChildFrame(ImGuiID id,
                               const ImVec2& size,
                               ImGuiWindowFlags flags = 0);  // helper to create a child window / scrolling region that
                                                             // looks like a normal widget frame
IMGUI_API void EndChildFrame();  // always call EndChildFrame() regardless of BeginChildFrame() return values (which
                                 // indicates a collapsed/clipped window)

// Text Utilities
IMGUI_API ImVec2 CalcTextSize(const char* text,
                              const char* text_end             = NULL,
                              bool hide_text_after_double_hash = false,
                              float wrap_width                 = -1.0f);

// Color Utilities
IMGUI_API ImVec4 ColorConvertU32ToFloat4(ImU32 in);
IMGUI_API ImU32 ColorConvertFloat4ToU32(const ImVec4& in);
IMGUI_API void ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v);
IMGUI_API void ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b);

// Inputs Utilities: Keyboard
// - For 'int user_key_index' you can use your own indices/enums according to how your backend/engine stored them in
// io.KeysDown[].
// - We don't know the meaning of those value. You can use GetKeyIndex() to map a ImGuiKey_ value into the user index.
IMGUI_API int GetKeyIndex(ImGuiKey imgui_key);  // map ImGuiKey_* values into user's key index. == io.KeyMap[key]
IMGUI_API bool IsKeyDown(int user_key_index);   // is key being held. == io.KeysDown[user_key_index].
IMGUI_API bool IsKeyPressed(int user_key_index,
                            bool repeat = true);   // was key pressed (went from !Down to Down)? if repeat=true, uses
                                                   // io.KeyRepeatDelay / KeyRepeatRate
IMGUI_API bool IsKeyReleased(int user_key_index);  // was key released (went from Down to !Down)?
IMGUI_API int GetKeyPressedAmount(
    int key_index,
    float repeat_delay,
    float rate);  // uses provided repeat rate/delay. return a count, most often 0 or 1 but might be >1 if RepeatRate is
                  // small enough that DeltaTime > RepeatRate
IMGUI_API void CaptureKeyboardFromApp(
    bool want_capture_keyboard_value =
        true);  // attention: misleading name! manually override io.WantCaptureKeyboard flag next frame (said flag is
                // entirely left for your application to handle). e.g. force capture keyboard when your widget is being
                // hovered. This is equivalent to setting "io.WantCaptureKeyboard = want_capture_keyboard_value"; after
                // the next NewFrame() call.

// Inputs Utilities: Mouse
// - To refer to a mouse button, you may use named enums in your code e.g. ImGuiMouseButton_Left,
// ImGuiMouseButton_Right.
// - You can also use regular integer: it is forever guaranteed that 0=Left, 1=Right, 2=Middle.
// - Dragging operations are only reported after mouse has moved a certain distance away from the initial clicking
// position (see 'lock_threshold' and 'io.MouseDraggingThreshold')
IMGUI_API bool IsMouseDown(ImGuiMouseButton button);  // is mouse button held?
IMGUI_API bool IsMouseClicked(ImGuiMouseButton button,
                              bool repeat = false);       // did mouse button clicked? (went from !Down to Down)
IMGUI_API bool IsMouseReleased(ImGuiMouseButton button);  // did mouse button released? (went from Down to !Down)
IMGUI_API bool IsMouseDoubleClicked(
    ImGuiMouseButton button);  // did mouse button double-clicked? (note that a double-click will also report
                               // IsMouseClicked() == true)
IMGUI_API bool IsMouseHoveringRect(
    const ImVec2& r_min,
    const ImVec2& r_max,
    bool clip = true);  // is mouse hovering given bounding rect (in screen space). clipped by current clipping
                        // settings, but disregarding of other consideration of focus/window ordering/popup-block.
IMGUI_API bool IsMousePosValid(const ImVec2* mouse_pos = NULL);  // by convention we use (-FLT_MAX,-FLT_MAX) to denote
                                                                 // that there is no mouse available
IMGUI_API bool IsAnyMouseDown();                                 // is any mouse button held?
IMGUI_API ImVec2
GetMousePos();  // shortcut to ImGui::GetIO().MousePos provided by user, to be consistent with other calls
IMGUI_API ImVec2
GetMousePosOnOpeningCurrentPopup();  // retrieve mouse position at the time of opening popup we have BeginPopup() into
                                     // (helper to avoid user backing that value themselves)
IMGUI_API bool IsMouseDragging(
    ImGuiMouseButton button,
    float lock_threshold = -1.0f);  // is mouse dragging? (if lock_threshold < -1.0f, uses io.MouseDraggingThreshold)
IMGUI_API ImVec2 GetMouseDragDelta(
    ImGuiMouseButton button = 0,
    float lock_threshold =
        -1.0f);  // return the delta from the initial clicking position while the mouse button is pressed or was just
                 // released. This is locked and return 0.0f until the mouse moves past a distance threshold at least
                 // once (if lock_threshold < -1.0f, uses io.MouseDraggingThreshold)
IMGUI_API void ResetMouseDragDelta(ImGuiMouseButton button = 0);  //
IMGUI_API ImGuiMouseCursor GetMouseCursor();  // get desired cursor type, reset in ImGui::NewFrame(), this is updated
                                              // during the frame. valid before Render(). If you use software rendering
                                              // by setting io.MouseDrawCursor ImGui will render those for you
IMGUI_API void SetMouseCursor(ImGuiMouseCursor cursor_type);  // set desired cursor type
IMGUI_API void CaptureMouseFromApp(
    bool want_capture_mouse_value =
        true);  // attention: misleading name! manually override io.WantCaptureMouse flag next frame (said flag is
                // entirely left for your application to handle). This is equivalent to setting "io.WantCaptureMouse =
                // want_capture_mouse_value;" after the next NewFrame() call.

// Clipboard Utilities
// - Also see the LogToClipboard() function to capture GUI into clipboard, or easily output text data to the clipboard.
IMGUI_API const char* GetClipboardText();
IMGUI_API void SetClipboardText(const char* text);

// Settings/.Ini Utilities
// - The disk functions are automatically called if io.IniFilename != NULL (default is "imgui.ini").
// - Set io.IniFilename to NULL to load/save manually. Read io.WantSaveIniSettings description about handling .ini
// saving manually.
// - Important: default value "imgui.ini" is relative to current working dir! Most apps will want to lock this to an
// absolute path (e.g. same path as executables).
IMGUI_API void LoadIniSettingsFromDisk(
    const char* ini_filename);  // call after CreateContext() and before the first call to NewFrame(). NewFrame()
                                // automatically calls LoadIniSettingsFromDisk(io.IniFilename).
IMGUI_API void LoadIniSettingsFromMemory(
    const char* ini_data,
    size_t ini_size = 0);  // call after CreateContext() and before the first call to NewFrame() to provide .ini data
                           // from your own data source.
IMGUI_API void SaveIniSettingsToDisk(
    const char* ini_filename);  // this is automatically called (if io.IniFilename is not empty) a few seconds after any
                                // modification that should be reflected in the .ini file (and also by DestroyContext).
IMGUI_API const char* SaveIniSettingsToMemory(
    size_t* out_ini_size =
        NULL);  // return a zero-terminated string with the .ini data which you can save by your own mean. call when
                // io.WantSaveIniSettings is set, then save data by your own mean and clear io.WantSaveIniSettings.

// Debug Utilities
// - This is used by the IMGUI_CHECKVERSION() macro.
IMGUI_API bool DebugCheckVersionAndDataLayout(const char* version_str,
                                              size_t sz_io,
                                              size_t sz_style,
                                              size_t sz_vec2,
                                              size_t sz_vec4,
                                              size_t sz_drawvert,
                                              size_t sz_drawidx);  // This is called by IMGUI_CHECKVERSION() macro.

// Memory Allocators
// - Those functions are not reliant on the current context.
// - DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() +
// SetAllocatorFunctions()
//   for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for
//   more details.
IMGUI_API void SetAllocatorFunctions(ImGuiMemAllocFunc alloc_func, ImGuiMemFreeFunc free_func, void* user_data = NULL);
IMGUI_API void GetAllocatorFunctions(ImGuiMemAllocFunc* p_alloc_func,
                                     ImGuiMemFreeFunc* p_free_func,
                                     void** p_user_data);
IMGUI_API void* MemAlloc(size_t size);
IMGUI_API void MemFree(void* ptr);

// (Optional) Platform/OS interface for multi-viewport support
// Read comments around the ImGuiPlatformIO structure for more details.
// Note: You may use GetWindowViewport() to get the current viewport of the current window.
IMGUI_API ImGuiPlatformIO& GetPlatformIO();  // platform/renderer functions, for backend to setup + viewports list.
IMGUI_API void
UpdatePlatformWindows();  // call in main loop. will call CreateWindow/ResizeWindow/etc. platform functions for each
                          // secondary viewport, and DestroyWindow for each inactive viewport.
IMGUI_API void RenderPlatformWindowsDefault(
    void* platform_render_arg = NULL,
    void* renderer_render_arg = NULL);  // call in main loop. will call RenderWindow/SwapBuffers platform functions for
                                        // each secondary viewport which doesn't have the ImGuiViewportFlags_Minimized
                                        // flag set. May be reimplemented by user for custom rendering needs.
IMGUI_API void DestroyPlatformWindows();  // call DestroyWindow platform functions for all viewports. call from backend
                                          // Shutdown() if you need to close platform windows before imgui shutdown.
                                          // otherwise will be called by DestroyContext().
IMGUI_API ImGuiViewport* FindViewportByID(ImGuiID id);  // this is a helper for backends.
IMGUI_API ImGuiViewport* FindViewportByPlatformHandle(
    void* platform_handle);  // this is a helper for backends. the type platform_handle is decided by the backend (e.g.
                             // HWND, MyWindow*, GLFWwindow* etc.)

}  // namespace ImGui

//-----------------------------------------------------------------------------
// [SECTION] Flags & Enumerations
//-----------------------------------------------------------------------------

// Flags for ImGui::Begin()
enum ImGuiWindowFlags_
{
    ImGuiWindowFlags_None       = 0,
    ImGuiWindowFlags_NoTitleBar = 1 << 0,  // Disable title-bar
    ImGuiWindowFlags_NoResize   = 1 << 1,  // Disable user resizing with the lower-right grip
    ImGuiWindowFlags_NoMove     = 1 << 2,  // Disable user moving the window
    ImGuiWindowFlags_NoScrollbar =
        1 << 3,  // Disable scrollbars (window can still scroll with mouse or programmatically)
    ImGuiWindowFlags_NoScrollWithMouse =
        1 << 4,  // Disable user vertically scrolling with mouse wheel. On child window, mouse wheel will be forwarded
                 // to the parent unless NoScrollbar is also set.
    ImGuiWindowFlags_NoCollapse = 1 << 5,  // Disable user collapsing window by double-clicking on it. Also referred to
                                           // as "window menu button" within a docking node.
    ImGuiWindowFlags_AlwaysAutoResize = 1 << 6,  // Resize every window to its content every frame
    ImGuiWindowFlags_NoBackground = 1 << 7,     // Disable drawing background color (WindowBg, etc.) and outside border.
                                                // Similar as using SetNextWindowBgAlpha(0.0f).
    ImGuiWindowFlags_NoSavedSettings = 1 << 8,  // Never load/save settings in .ini file
    ImGuiWindowFlags_NoMouseInputs   = 1 << 9,  // Disable catching mouse, hovering test with pass through.
    ImGuiWindowFlags_MenuBar         = 1 << 10,  // Has a menu-bar
    ImGuiWindowFlags_HorizontalScrollbar =
        1 << 11,  // Allow horizontal scrollbar to appear (off by default). You may use
                  // SetNextWindowContentSize(ImVec2(width,0.0f)); prior to calling Begin() to specify width. Read code
                  // in imgui_demo in the "Horizontal Scrolling" section.
    ImGuiWindowFlags_NoFocusOnAppearing =
        1 << 12,  // Disable taking focus when transitioning from hidden to visible state
    ImGuiWindowFlags_NoBringToFrontOnFocus = 1 << 13,  // Disable bringing window to front when taking focus (e.g.
                                                       // clicking on it or programmatically giving it focus)
    ImGuiWindowFlags_AlwaysVerticalScrollbar =
        1 << 14,  // Always show vertical scrollbar (even if ContentSize.y < Size.y)
    ImGuiWindowFlags_AlwaysHorizontalScrollbar =
        1 << 15,  // Always show horizontal scrollbar (even if ContentSize.x < Size.x)
    ImGuiWindowFlags_AlwaysUseWindowPadding =
        1 << 16,  // Ensure child windows without border uses style.WindowPadding (ignored by default for non-bordered
                  // child windows, because more convenient)
    ImGuiWindowFlags_NoNavInputs = 1 << 18,  // No gamepad/keyboard navigation within the window
    ImGuiWindowFlags_NoNavFocus =
        1 << 19,  // No focusing toward this window with gamepad/keyboard navigation (e.g. skipped by CTRL+TAB)
    ImGuiWindowFlags_UnsavedDocument =
        1 << 20,  // Display a dot next to the title. When used in a tab/docking context, tab is selected when clicking
                  // the X + closure is not assumed (will wait for user to stop submitting the tab). Otherwise closure
                  // is assumed when pressing the X, so if you keep submitting the tab may reappear at end of tab bar.
    ImGuiWindowFlags_NoDocking = 1 << 21,  // Disable docking of this window

    ImGuiWindowFlags_NoNav        = ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus,
    ImGuiWindowFlags_NoDecoration = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize |
                                    ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoCollapse,
    ImGuiWindowFlags_NoInputs =
        ImGuiWindowFlags_NoMouseInputs | ImGuiWindowFlags_NoNavInputs | ImGuiWindowFlags_NoNavFocus,

    // [Internal]
    ImGuiWindowFlags_NavFlattened = 1 << 23,  // [BETA] Allow gamepad/keyboard navigation to cross over parent border to
                                              // this child (only use on child that have no scrolling!)
    ImGuiWindowFlags_ChildWindow  = 1 << 24,  // Don't use! For internal use by BeginChild()
    ImGuiWindowFlags_Tooltip      = 1 << 25,  // Don't use! For internal use by BeginTooltip()
    ImGuiWindowFlags_Popup        = 1 << 26,  // Don't use! For internal use by BeginPopup()
    ImGuiWindowFlags_Modal        = 1 << 27,  // Don't use! For internal use by BeginPopupModal()
    ImGuiWindowFlags_ChildMenu    = 1 << 28,  // Don't use! For internal use by BeginMenu()
    ImGuiWindowFlags_DockNodeHost = 1 << 29   // Don't use! For internal use by Begin()/NewFrame()

    // [Obsolete]
    // ImGuiWindowFlags_ResizeFromAnySide    = 1 << 17,  // --> Set io.ConfigWindowsResizeFromEdges=true and make sure
    // mouse cursors are supported by backend (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors)
};

// Flags for ImGui::InputText()
enum ImGuiInputTextFlags_
{
    ImGuiInputTextFlags_None             = 0,
    ImGuiInputTextFlags_CharsDecimal     = 1 << 0,  // Allow 0123456789.+-*/
    ImGuiInputTextFlags_CharsHexadecimal = 1 << 1,  // Allow 0123456789ABCDEFabcdef
    ImGuiInputTextFlags_CharsUppercase   = 1 << 2,  // Turn a..z into A..Z
    ImGuiInputTextFlags_CharsNoBlank     = 1 << 3,  // Filter out spaces, tabs
    ImGuiInputTextFlags_AutoSelectAll    = 1 << 4,  // Select entire text when first taking mouse focus
    ImGuiInputTextFlags_EnterReturnsTrue =
        1 << 5,  // Return 'true' when Enter is pressed (as opposed to every time the value was modified). Consider
                 // looking at the IsItemDeactivatedAfterEdit() function.
    ImGuiInputTextFlags_CallbackCompletion = 1 << 6,  // Callback on pressing TAB (for completion handling)
    ImGuiInputTextFlags_CallbackHistory    = 1 << 7,  // Callback on pressing Up/Down arrows (for history handling)
    ImGuiInputTextFlags_CallbackAlways =
        1 << 8,  // Callback on each iteration. User code may query cursor position, modify text buffer.
    ImGuiInputTextFlags_CallbackCharFilter =
        1 << 9,  // Callback on character inputs to replace or discard them. Modify 'EventChar' to replace or discard,
                 // or return 1 in callback to discard.
    ImGuiInputTextFlags_AllowTabInput = 1 << 10,  // Pressing TAB input a '\t' character into the text field
    ImGuiInputTextFlags_CtrlEnterForNewLine =
        1 << 11,  // In multi-line mode, unfocus with Enter, add new line with Ctrl+Enter (default is opposite: unfocus
                  // with Ctrl+Enter, add line with Enter).
    ImGuiInputTextFlags_NoHorizontalScroll = 1 << 12,  // Disable following the cursor horizontally
    ImGuiInputTextFlags_AlwaysOverwrite    = 1 << 13,  // Overwrite mode
    ImGuiInputTextFlags_ReadOnly           = 1 << 14,  // Read-only mode
    ImGuiInputTextFlags_Password           = 1 << 15,  // Password mode, display all characters as '*'
    ImGuiInputTextFlags_NoUndoRedo =
        1 << 16,  // Disable undo/redo. Note that input text owns the text data while active, if you want to provide
                  // your own undo/redo stack you need e.g. to call ClearActiveID().
    ImGuiInputTextFlags_CharsScientific = 1 << 17,  // Allow 0123456789.+-*/eE (Scientific notation input)
    ImGuiInputTextFlags_CallbackResize =
        1 << 18,  // Callback on buffer capacity changes request (beyond 'buf_size' parameter value), allowing the
                  // string to grow. Notify when the string wants to be resized (for string types which hold a cache of
                  // their Size). You will be provided a new BufSize in the callback and NEED to honor it. (see
                  // misc/cpp/imgui_stdlib.h for an example of using this)
    ImGuiInputTextFlags_CallbackEdit =
        1 << 19  // Callback on any edit (note that InputText() already returns true on edit, the callback is useful
                 // mainly to manipulate the underlying buffer while focus is active)

// Obsolete names (will be removed soon)
#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    ,
    ImGuiInputTextFlags_AlwaysInsertMode =
        ImGuiInputTextFlags_AlwaysOverwrite  // [renamed in 1.82] name was not matching behavior
#    endif
};

// Flags for ImGui::TreeNodeEx(), ImGui::CollapsingHeader*()
enum ImGuiTreeNodeFlags_
{
    ImGuiTreeNodeFlags_None             = 0,
    ImGuiTreeNodeFlags_Selected         = 1 << 0,  // Draw as selected
    ImGuiTreeNodeFlags_Framed           = 1 << 1,  // Draw frame with background (e.g. for CollapsingHeader)
    ImGuiTreeNodeFlags_AllowItemOverlap = 1 << 2,  // Hit testing to allow subsequent widgets to overlap this one
    ImGuiTreeNodeFlags_NoTreePushOnOpen =
        1
        << 3,  // Don't do a TreePush() when open (e.g. for CollapsingHeader) = no extra indent nor pushing on ID stack
    ImGuiTreeNodeFlags_NoAutoOpenOnLog = 1 << 4,    // Don't automatically and temporarily open node when Logging is
                                                    // active (by default logging will automatically open tree nodes)
    ImGuiTreeNodeFlags_DefaultOpen       = 1 << 5,  // Default node to be open
    ImGuiTreeNodeFlags_OpenOnDoubleClick = 1 << 6,  // Need double-click to open node
    ImGuiTreeNodeFlags_OpenOnArrow =
        1 << 7,  // Only open when clicking on the arrow part. If ImGuiTreeNodeFlags_OpenOnDoubleClick is also set,
                 // single-click arrow or double-click all box to open.
    ImGuiTreeNodeFlags_Leaf   = 1 << 8,  // No collapsing, no arrow (use as a convenience for leaf nodes).
    ImGuiTreeNodeFlags_Bullet = 1 << 9,  // Display a bullet instead of arrow
    ImGuiTreeNodeFlags_FramePadding =
        1 << 10,  // Use FramePadding (even for an unframed text node) to vertically align text baseline to regular
                  // widget height. Equivalent to calling AlignTextToFramePadding().
    ImGuiTreeNodeFlags_SpanAvailWidth =
        1 << 11,  // Extend hit box to the right-most edge, even if not framed. This is not the default in order to
                  // allow adding other items on the same line. In the future we may refactor the hit system to be
                  // front-to-back, allowing natural overlaps and then this can become the default.
    ImGuiTreeNodeFlags_SpanFullWidth =
        1 << 12,  // Extend hit box to the left-most and right-most edges (bypass the indented area).
    ImGuiTreeNodeFlags_NavLeftJumpsBackHere = 1
                                              << 13,  // (WIP) Nav: left direction may move to this TreeNode() from any
                                                      // of its child (items submitted between TreeNode and TreePop)
    // ImGuiTreeNodeFlags_NoScrollOnOpen     = 1 << 14,  // FIXME: TODO: Disable automatic scroll on TreePop() if node
    // got just open and contents is not visible
    ImGuiTreeNodeFlags_CollapsingHeader =
        ImGuiTreeNodeFlags_Framed | ImGuiTreeNodeFlags_NoTreePushOnOpen | ImGuiTreeNodeFlags_NoAutoOpenOnLog
};

// Flags for OpenPopup*(), BeginPopupContext*(), IsPopupOpen() functions.
// - To be backward compatible with older API which took an 'int mouse_button = 1' argument, we need to treat
//   small flags values as a mouse button index, so we encode the mouse button in the first few bits of the flags.
//   It is therefore guaranteed to be legal to pass a mouse button index in ImGuiPopupFlags.
// - For the same reason, we exceptionally default the ImGuiPopupFlags argument of BeginPopupContextXXX functions to 1
// instead of 0.
//   IMPORTANT: because the default parameter is 1 (==ImGuiPopupFlags_MouseButtonRight), if you rely on the default
//   parameter and want to another another flag, you need to pass in the ImGuiPopupFlags_MouseButtonRight flag.
// - Multiple buttons currently cannot be combined/or-ed in those functions (we could allow it later).
enum ImGuiPopupFlags_
{
    ImGuiPopupFlags_None            = 0,
    ImGuiPopupFlags_MouseButtonLeft = 0,   // For BeginPopupContext*(): open on Left Mouse release. Guaranteed to always
                                           // be == 0 (same as ImGuiMouseButton_Left)
    ImGuiPopupFlags_MouseButtonRight = 1,  // For BeginPopupContext*(): open on Right Mouse release. Guaranteed to
                                           // always be == 1 (same as ImGuiMouseButton_Right)
    ImGuiPopupFlags_MouseButtonMiddle = 2,  // For BeginPopupContext*(): open on Middle Mouse release. Guaranteed to
                                            // always be == 2 (same as ImGuiMouseButton_Middle)
    ImGuiPopupFlags_MouseButtonMask_        = 0x1F,
    ImGuiPopupFlags_MouseButtonDefault_     = 1,
    ImGuiPopupFlags_NoOpenOverExistingPopup = 1 << 5,  // For OpenPopup*(), BeginPopupContext*(): don't open if there's
                                                       // already a popup at the same level of the popup stack
    ImGuiPopupFlags_NoOpenOverItems =
        1 << 6,  // For BeginPopupContextWindow(): don't return true when hovering items, only when hovering empty space
    ImGuiPopupFlags_AnyPopupId = 1 << 7,  // For IsPopupOpen(): ignore the ImGuiID parameter and test for any popup.
    ImGuiPopupFlags_AnyPopupLevel =
        1 << 8,  // For IsPopupOpen(): search/test at any level of the popup stack (default test in the current level)
    ImGuiPopupFlags_AnyPopup = ImGuiPopupFlags_AnyPopupId | ImGuiPopupFlags_AnyPopupLevel
};

// Flags for ImGui::Selectable()
enum ImGuiSelectableFlags_
{
    ImGuiSelectableFlags_None            = 0,
    ImGuiSelectableFlags_DontClosePopups = 1 << 0,  // Clicking this don't close parent popup window
    ImGuiSelectableFlags_SpanAllColumns =
        1 << 1,  // Selectable frame can span all columns (text will still fit in current column)
    ImGuiSelectableFlags_AllowDoubleClick = 1 << 2,  // Generate press events on double clicks too
    ImGuiSelectableFlags_Disabled         = 1 << 3,  // Cannot be selected, display grayed out text
    ImGuiSelectableFlags_AllowItemOverlap = 1 << 4  // (WIP) Hit testing to allow subsequent widgets to overlap this one
};

// Flags for ImGui::BeginCombo()
enum ImGuiComboFlags_
{
    ImGuiComboFlags_None           = 0,
    ImGuiComboFlags_PopupAlignLeft = 1 << 0,  // Align the popup toward the left by default
    ImGuiComboFlags_HeightSmall =
        1 << 1,  // Max ~4 items visible. Tip: If you want your combo popup to be a specific size you can use
                 // SetNextWindowSizeConstraints() prior to calling BeginCombo()
    ImGuiComboFlags_HeightRegular = 1 << 2,  // Max ~8 items visible (default)
    ImGuiComboFlags_HeightLarge   = 1 << 3,  // Max ~20 items visible
    ImGuiComboFlags_HeightLargest = 1 << 4,  // As many fitting items as possible
    ImGuiComboFlags_NoArrowButton = 1 << 5,  // Display on the preview box without the square arrow button
    ImGuiComboFlags_NoPreview     = 1 << 6,  // Display only a square arrow button
    ImGuiComboFlags_HeightMask_   = ImGuiComboFlags_HeightSmall | ImGuiComboFlags_HeightRegular |
                                  ImGuiComboFlags_HeightLarge | ImGuiComboFlags_HeightLargest
};

// Flags for ImGui::BeginTabBar()
enum ImGuiTabBarFlags_
{
    ImGuiTabBarFlags_None = 0,
    ImGuiTabBarFlags_Reorderable =
        1 << 0,  // Allow manually dragging tabs to re-order them + New tabs are appended at the end of list
    ImGuiTabBarFlags_AutoSelectNewTabs  = 1 << 1,  // Automatically select new tabs when they appear
    ImGuiTabBarFlags_TabListPopupButton = 1 << 2,  // Disable buttons to open the tab list popup
    ImGuiTabBarFlags_NoCloseWithMiddleMouseButton =
        1 << 3,  // Disable behavior of closing tabs (that are submitted with p_open != NULL) with middle mouse button.
                 // You can still repro this behavior on user's side with if (IsItemHovered() && IsMouseClicked(2))
                 // *p_open = false.
    ImGuiTabBarFlags_NoTabListScrollingButtons =
        1 << 4,  // Disable scrolling buttons (apply when fitting policy is ImGuiTabBarFlags_FittingPolicyScroll)
    ImGuiTabBarFlags_NoTooltip               = 1 << 5,  // Disable tooltips when hovering a tab
    ImGuiTabBarFlags_FittingPolicyResizeDown = 1 << 6,  // Resize tabs when they don't fit
    ImGuiTabBarFlags_FittingPolicyScroll     = 1 << 7,  // Add scroll buttons when tabs don't fit
    ImGuiTabBarFlags_FittingPolicyMask_ =
        ImGuiTabBarFlags_FittingPolicyResizeDown | ImGuiTabBarFlags_FittingPolicyScroll,
    ImGuiTabBarFlags_FittingPolicyDefault_ = ImGuiTabBarFlags_FittingPolicyResizeDown
};

// Flags for ImGui::BeginTabItem()
enum ImGuiTabItemFlags_
{
    ImGuiTabItemFlags_None = 0,
    ImGuiTabItemFlags_UnsavedDocument =
        1 << 0,  // Display a dot next to the title + tab is selected when clicking the X + closure is not assumed (will
                 // wait for user to stop submitting the tab). Otherwise closure is assumed when pressing the X, so if
                 // you keep submitting the tab may reappear at end of tab bar.
    ImGuiTabItemFlags_SetSelected =
        1 << 1,  // Trigger flag to programmatically make the tab selected when calling BeginTabItem()
    ImGuiTabItemFlags_NoCloseWithMiddleMouseButton =
        1 << 2,  // Disable behavior of closing tabs (that are submitted with p_open != NULL) with middle mouse button.
                 // You can still repro this behavior on user's side with if (IsItemHovered() && IsMouseClicked(2))
                 // *p_open = false.
    ImGuiTabItemFlags_NoPushId  = 1 << 3,  // Don't call PushID(tab->ID)/PopID() on BeginTabItem()/EndTabItem()
    ImGuiTabItemFlags_NoTooltip = 1 << 4,  // Disable tooltip for the given tab
    ImGuiTabItemFlags_NoReorder = 1 << 5,  // Disable reordering this tab or having another tab cross over this tab
    ImGuiTabItemFlags_Leading =
        1 << 6,  // Enforce the tab position to the left of the tab bar (after the tab list popup button)
    ImGuiTabItemFlags_Trailing =
        1 << 7  // Enforce the tab position to the right of the tab bar (before the scrolling buttons)
};

// Flags for ImGui::BeginTable()
// [BETA API] API may evolve slightly! If you use this, please update to the next version when it comes out!
// - Important! Sizing policies have complex and subtle side effects, more so than you would expect.
//   Read comments/demos carefully + experiment with live demos to get acquainted with them.
// - The DEFAULT sizing policies are:
//    - Default to ImGuiTableFlags_SizingFixedFit    if ScrollX is on, or if host window has
//    ImGuiWindowFlags_AlwaysAutoResize.
//    - Default to ImGuiTableFlags_SizingStretchSame if ScrollX is off.
// - When ScrollX is off:
//    - Table defaults to ImGuiTableFlags_SizingStretchSame -> all Columns defaults to
//    ImGuiTableColumnFlags_WidthStretch with same weight.
//    - Columns sizing policy allowed: Stretch (default), Fixed/Auto.
//    - Fixed Columns will generally obtain their requested width (unless the table cannot fit them all).
//    - Stretch Columns will share the remaining width.
//    - Mixed Fixed/Stretch columns is possible but has various side-effects on resizing behaviors.
//      The typical use of mixing sizing policies is: any number of LEADING Fixed columns, followed by one or two
//      TRAILING Stretch columns. (this is because the visible order of columns have subtle but necessary effects on how
//      they react to manual resizing).
// - When ScrollX is on:
//    - Table defaults to ImGuiTableFlags_SizingFixedFit -> all Columns defaults to ImGuiTableColumnFlags_WidthFixed
//    - Columns sizing policy allowed: Fixed/Auto mostly.
//    - Fixed Columns can be enlarged as needed. Table will show an horizontal scrollbar if needed.
//    - When using auto-resizing (non-resizable) fixed columns, querying the content width to use item right-alignment
//    e.g. SetNextItemWidth(-FLT_MIN) doesn't make sense, would create a feedback loop.
//    - Using Stretch columns OFTEN DOES NOT MAKE SENSE if ScrollX is on, UNLESS you have specified a value for
//    'inner_width' in BeginTable().
//      If you specify a value for 'inner_width' then effectively the scrolling space is known and Stretch or mixed
//      Fixed/Stretch columns become meaningful again.
// - Read on documentation at the top of imgui_tables.cpp for details.
enum ImGuiTableFlags_
{
    // Features
    ImGuiTableFlags_None        = 0,
    ImGuiTableFlags_Resizable   = 1 << 0,  // Enable resizing columns.
    ImGuiTableFlags_Reorderable = 1 << 1,  // Enable reordering columns in header row (need calling TableSetupColumn() +
                                           // TableHeadersRow() to display headers)
    ImGuiTableFlags_Hideable = 1 << 2,     // Enable hiding/disabling columns in context menu.
    ImGuiTableFlags_Sortable = 1 << 3,     // Enable sorting. Call TableGetSortSpecs() to obtain sort specs. Also see
                                           // ImGuiTableFlags_SortMulti and ImGuiTableFlags_SortTristate.
    ImGuiTableFlags_NoSavedSettings =
        1 << 4,  // Disable persisting columns order, width and sort settings in the .ini file.
    ImGuiTableFlags_ContextMenuInBody = 1 << 5,  // Right-click on columns body/contents will display table context
                                                 // menu. By default it is available in TableHeadersRow(). Decorations
    ImGuiTableFlags_RowBg =
        1 << 6,  // Set each RowBg color with ImGuiCol_TableRowBg or ImGuiCol_TableRowBgAlt (equivalent of calling
                 // TableSetBgColor with ImGuiTableBgFlags_RowBg0 on each row manually)
    ImGuiTableFlags_BordersInnerH = 1 << 7,   // Draw horizontal borders between rows.
    ImGuiTableFlags_BordersOuterH = 1 << 8,   // Draw horizontal borders at the top and bottom.
    ImGuiTableFlags_BordersInnerV = 1 << 9,   // Draw vertical borders between columns.
    ImGuiTableFlags_BordersOuterV = 1 << 10,  // Draw vertical borders on the left and right sides.
    ImGuiTableFlags_BordersH =
        ImGuiTableFlags_BordersInnerH | ImGuiTableFlags_BordersOuterH,  // Draw horizontal borders.
    ImGuiTableFlags_BordersV = ImGuiTableFlags_BordersInnerV | ImGuiTableFlags_BordersOuterV,  // Draw vertical borders.
    ImGuiTableFlags_BordersInner =
        ImGuiTableFlags_BordersInnerV | ImGuiTableFlags_BordersInnerH,  // Draw inner borders.
    ImGuiTableFlags_BordersOuter =
        ImGuiTableFlags_BordersOuterV | ImGuiTableFlags_BordersOuterH,  // Draw outer borders.
    ImGuiTableFlags_Borders         = ImGuiTableFlags_BordersInner | ImGuiTableFlags_BordersOuter,  // Draw all borders.
    ImGuiTableFlags_NoBordersInBody = 1 << 11,  // [ALPHA] Disable vertical borders in columns Body (borders will always
                                                // appears in Headers). -> May move to style
    ImGuiTableFlags_NoBordersInBodyUntilResize =
        1 << 12,  // [ALPHA] Disable vertical borders in columns Body until hovered for resize (borders will always
                  // appears in Headers). -> May move to style Sizing Policy (read above for defaults)
    ImGuiTableFlags_SizingFixedFit = 1 << 13,  // Columns default to _WidthFixed or _WidthAuto (if resizable or not
                                               // resizable), matching contents width.
    ImGuiTableFlags_SizingFixedSame =
        2 << 13,  // Columns default to _WidthFixed or _WidthAuto (if resizable or not resizable), matching the maximum
                  // contents width of all columns. Implicitly enable ImGuiTableFlags_NoKeepColumnsVisible.
    ImGuiTableFlags_SizingStretchProp =
        3 << 13,  // Columns default to _WidthStretch with default weights proportional to each columns contents widths.
    ImGuiTableFlags_SizingStretchSame = 4 << 13,  // Columns default to _WidthStretch with default weights all equal,
                                                  // unless overridden by TableSetupColumn(). Sizing Extra Options
    ImGuiTableFlags_NoHostExtendX =
        1 << 16,  // Make outer width auto-fit to columns, overriding outer_size.x value. Only available when
                  // ScrollX/ScrollY are disabled and Stretch columns are not used.
    ImGuiTableFlags_NoHostExtendY =
        1 << 17,  // Make outer height stop exactly at outer_size.y (prevent auto-extending table past the limit). Only
                  // available when ScrollX/ScrollY are disabled. Data below the limit will be clipped and not visible.
    ImGuiTableFlags_NoKeepColumnsVisible =
        1 << 18,  // Disable keeping column always minimally visible when ScrollX is off and table gets too small. Not
                  // recommended if columns are resizable.
    ImGuiTableFlags_PreciseWidths =
        1 << 19,  // Disable distributing remainder width to stretched columns (width allocation on a 100-wide table
                  // with 3 columns: Without this flag: 33,33,34. With this flag: 33,33,33). With larger number of
                  // columns, resizing will appear to be less smooth. Clipping
    ImGuiTableFlags_NoClip =
        1 << 20,  // Disable clipping rectangle for every individual columns (reduce draw command count, items will be
                  // able to overflow into other columns). Generally incompatible with TableSetupScrollFreeze(). Padding
    ImGuiTableFlags_PadOuterX =
        1 << 21,  // Default if BordersOuterV is on. Enable outer-most padding. Generally desirable if you have headers.
    ImGuiTableFlags_NoPadOuterX = 1 << 22,  // Default if BordersOuterV is off. Disable outer-most padding.
    ImGuiTableFlags_NoPadInnerX =
        1 << 23,  // Disable inner padding between columns (double inner padding if BordersOuterV is on, single inner
                  // padding if BordersOuterV is off). Scrolling
    ImGuiTableFlags_ScrollX =
        1 << 24,  // Enable horizontal scrolling. Require 'outer_size' parameter of BeginTable() to specify the
                  // container size. Changes default sizing policy. Because this create a child window, ScrollY is
                  // currently generally recommended when using ScrollX.
    ImGuiTableFlags_ScrollY = 1 << 25,  // Enable vertical scrolling. Require 'outer_size' parameter of BeginTable() to
                                        // specify the container size. Sorting
    ImGuiTableFlags_SortMulti = 1 << 26,     // Hold shift when clicking headers to sort on multiple column.
                                             // TableGetSortSpecs() may return specs where (SpecsCount > 1).
    ImGuiTableFlags_SortTristate = 1 << 27,  // Allow no sorting, disable default sorting. TableGetSortSpecs() may
                                             // return specs where (SpecsCount == 0).

    // [Internal] Combinations and masks
    ImGuiTableFlags_SizingMask_ = ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_SizingFixedSame |
                                  ImGuiTableFlags_SizingStretchProp | ImGuiTableFlags_SizingStretchSame

// Obsolete names (will be removed soon)
#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
//, ImGuiTableFlags_ColumnsWidthFixed = ImGuiTableFlags_SizingFixedFit, ImGuiTableFlags_ColumnsWidthStretch =
// ImGuiTableFlags_SizingStretchSame   // WIP Tables 2020/12 , ImGuiTableFlags_SizingPolicyFixed =
// ImGuiTableFlags_SizingFixedFit, ImGuiTableFlags_SizingPolicyStretch = ImGuiTableFlags_SizingStretchSame   // WIP
// Tables 2021/01
#    endif
};

// Flags for ImGui::TableSetupColumn()
enum ImGuiTableColumnFlags_
{
    // Input configuration flags
    ImGuiTableColumnFlags_None = 0,
    ImGuiTableColumnFlags_Disabled =
        1 << 0,  // Overriding/master disable flag: hide column, won't show in context menu (unlike calling
                 // TableSetColumnEnabled() which manipulates the user accessible state)
    ImGuiTableColumnFlags_DefaultHide = 1 << 1,  // Default as a hidden/disabled column.
    ImGuiTableColumnFlags_DefaultSort = 1 << 2,  // Default as a sorting column.
    ImGuiTableColumnFlags_WidthStretch =
        1 << 3,  // Column will stretch. Preferable with horizontal scrolling disabled (default if table sizing policy
                 // is _SizingStretchSame or _SizingStretchProp).
    ImGuiTableColumnFlags_WidthFixed =
        1 << 4,  // Column will not stretch. Preferable with horizontal scrolling enabled (default if table sizing
                 // policy is _SizingFixedFit and table is resizable).
    ImGuiTableColumnFlags_NoResize  = 1 << 5,  // Disable manual resizing.
    ImGuiTableColumnFlags_NoReorder = 1 << 6,  // Disable manual reordering this column, this will also prevent other
                                               // columns from crossing over this column.
    ImGuiTableColumnFlags_NoHide = 1 << 7,     // Disable ability to hide/disable this column.
    ImGuiTableColumnFlags_NoClip =
        1 << 8,  // Disable clipping for this column (all NoClip columns will render in a same draw command).
    ImGuiTableColumnFlags_NoSort =
        1 << 9,  // Disable ability to sort on this field (even if ImGuiTableFlags_Sortable is set on the table).
    ImGuiTableColumnFlags_NoSortAscending  = 1 << 10,  // Disable ability to sort in the ascending direction.
    ImGuiTableColumnFlags_NoSortDescending = 1 << 11,  // Disable ability to sort in the descending direction.
    ImGuiTableColumnFlags_NoHeaderLabel    = 1
                                          << 12,  // TableHeadersRow() will not submit label for this column. Convenient
                                                  // for some small columns. Name will still appear in context menu.
    ImGuiTableColumnFlags_NoHeaderWidth = 1 << 13,  // Disable header text width contribution to automatic column width.
    ImGuiTableColumnFlags_PreferSortAscending =
        1 << 14,  // Make the initial sort direction Ascending when first sorting on this column (default).
    ImGuiTableColumnFlags_PreferSortDescending =
        1 << 15,  // Make the initial sort direction Descending when first sorting on this column.
    ImGuiTableColumnFlags_IndentEnable = 1
                                         << 16,  // Use current Indent value when entering cell (default for column 0).
    ImGuiTableColumnFlags_IndentDisable = 1
                                          << 17,  // Ignore current Indent value when entering cell (default for columns
                                                  // > 0). Indentation changes _within_ the cell will still be honored.

    // Output status flags, read-only via TableGetColumnFlags()
    ImGuiTableColumnFlags_IsEnabled = 1 << 24,  // Status: is enabled == not hidden by user/api (referred to as "Hide"
                                                // in _DefaultHide and _NoHide) flags.
    ImGuiTableColumnFlags_IsVisible = 1 << 25,  // Status: is visible == is enabled AND not clipped by scrolling.
    ImGuiTableColumnFlags_IsSorted  = 1 << 26,  // Status: is currently part of the sort specs
    ImGuiTableColumnFlags_IsHovered = 1 << 27,  // Status: is hovered by mouse

    // [Internal] Combinations and masks
    ImGuiTableColumnFlags_WidthMask_  = ImGuiTableColumnFlags_WidthStretch | ImGuiTableColumnFlags_WidthFixed,
    ImGuiTableColumnFlags_IndentMask_ = ImGuiTableColumnFlags_IndentEnable | ImGuiTableColumnFlags_IndentDisable,
    ImGuiTableColumnFlags_StatusMask_ = ImGuiTableColumnFlags_IsEnabled | ImGuiTableColumnFlags_IsVisible |
                                        ImGuiTableColumnFlags_IsSorted | ImGuiTableColumnFlags_IsHovered,
    ImGuiTableColumnFlags_NoDirectResize_ =
        1 << 30  // [Internal] Disable user resizing this column directly (it may however we resized indirectly from its
                 // left edge)

// Obsolete names (will be removed soon)
#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
                 // ImGuiTableColumnFlags_WidthAuto           = ImGuiTableColumnFlags_WidthFixed |
                 // ImGuiTableColumnFlags_NoResize, // Column will not stretch and keep resizing based on submitted
                 // contents.
#    endif
};

// Flags for ImGui::TableNextRow()
enum ImGuiTableRowFlags_
{
    ImGuiTableRowFlags_None    = 0,
    ImGuiTableRowFlags_Headers = 1 << 0  // Identify header row (set default background color + width of its contents
                                         // accounted different for auto column width)
};

// Enum for ImGui::TableSetBgColor()
// Background colors are rendering in 3 layers:
//  - Layer 0: draw with RowBg0 color if set, otherwise draw with ColumnBg0 if set.
//  - Layer 1: draw with RowBg1 color if set, otherwise draw with ColumnBg1 if set.
//  - Layer 2: draw with CellBg color if set.
// The purpose of the two row/columns layers is to let you decide if a background color changes should override or blend
// with the existing color. When using ImGuiTableFlags_RowBg on the table, each row has the RowBg0 color automatically
// set for odd/even rows. If you set the color of RowBg0 target, your color will override the existing RowBg0 color. If
// you set the color of RowBg1 or ColumnBg1 target, your color will blend over the RowBg0 color.
enum ImGuiTableBgTarget_
{
    ImGuiTableBgTarget_None   = 0,
    ImGuiTableBgTarget_RowBg0 = 1,  // Set row background color 0 (generally used for background, automatically set when
                                    // ImGuiTableFlags_RowBg is used)
    ImGuiTableBgTarget_RowBg1 = 2,  // Set row background color 1 (generally used for selection marking)
    ImGuiTableBgTarget_CellBg = 3   // Set cell background color (top-most color)
};

// Flags for ImGui::IsWindowFocused()
enum ImGuiFocusedFlags_
{
    ImGuiFocusedFlags_None         = 0,
    ImGuiFocusedFlags_ChildWindows = 1 << 0,  // IsWindowFocused(): Return true if any children of the window is focused
    ImGuiFocusedFlags_RootWindow =
        1 << 1,  // IsWindowFocused(): Test from root window (top most parent of the current hierarchy)
    ImGuiFocusedFlags_AnyWindow = 1 << 2,  // IsWindowFocused(): Return true if any window is focused. Important: If you
                                           // are trying to tell how to dispatch your low-level inputs, do NOT use this.
                                           // Use 'io.WantCaptureMouse' instead! Please read the FAQ!
    ImGuiFocusedFlags_RootAndChildWindows = ImGuiFocusedFlags_RootWindow | ImGuiFocusedFlags_ChildWindows
};

// Flags for ImGui::IsItemHovered(), ImGui::IsWindowHovered()
// Note: if you are trying to check whether your mouse should be dispatched to Dear ImGui or to your app, you should use
// 'io.WantCaptureMouse' instead! Please read the FAQ! Note: windows with the ImGuiWindowFlags_NoInputs flag are ignored
// by IsWindowHovered() calls.
enum ImGuiHoveredFlags_
{
    ImGuiHoveredFlags_None = 0,  // Return true if directly over the item/window, not obstructed by another window, not
                                 // obstructed by an active popup or modal blocking inputs under them.
    ImGuiHoveredFlags_ChildWindows =
        1 << 0,  // IsWindowHovered() only: Return true if any children of the window is hovered
    ImGuiHoveredFlags_RootWindow =
        1 << 1,  // IsWindowHovered() only: Test from root window (top most parent of the current hierarchy)
    ImGuiHoveredFlags_AnyWindow = 1 << 2,  // IsWindowHovered() only: Return true if any window is hovered
    ImGuiHoveredFlags_AllowWhenBlockedByPopup =
        1 << 3,  // Return true even if a popup window is normally blocking access to this item/window
    // ImGuiHoveredFlags_AllowWhenBlockedByModal     = 1 << 4,   // Return true even if a modal popup window is normally
    // blocking access to this item/window. FIXME-TODO: Unavailable yet.
    ImGuiHoveredFlags_AllowWhenBlockedByActiveItem = 1 << 5,  // Return true even if an active item is blocking access
                                                              // to this item/window. Useful for Drag and Drop patterns.
    ImGuiHoveredFlags_AllowWhenOverlapped =
        1 << 6,  // Return true even if the position is obstructed or overlapped by another window
    ImGuiHoveredFlags_AllowWhenDisabled = 1 << 7,  // Return true even if the item is disabled
    ImGuiHoveredFlags_RectOnly          = ImGuiHoveredFlags_AllowWhenBlockedByPopup |
                                 ImGuiHoveredFlags_AllowWhenBlockedByActiveItem | ImGuiHoveredFlags_AllowWhenOverlapped,
    ImGuiHoveredFlags_RootAndChildWindows = ImGuiHoveredFlags_RootWindow | ImGuiHoveredFlags_ChildWindows
};

// Flags for ImGui::DockSpace(), shared/inherited by child nodes.
// (Some flags can be applied to individual nodes directly)
// FIXME-DOCK: Also see ImGuiDockNodeFlagsPrivate_ which may involve using the WIP and internal DockBuilder api.
enum ImGuiDockNodeFlags_
{
    ImGuiDockNodeFlags_None          = 0,
    ImGuiDockNodeFlags_KeepAliveOnly = 1 << 0,  // Shared       // Don't display the dockspace node but keep it alive.
                                                // Windows docked into this dockspace node won't be undocked.
    // ImGuiDockNodeFlags_NoCentralNode              = 1 << 1,   // Shared       // Disable Central Node (the node which
    // can stay empty)
    ImGuiDockNodeFlags_NoDockingInCentralNode =
        1 << 2,  // Shared       // Disable docking inside the Central Node, which will be always kept empty.
    ImGuiDockNodeFlags_PassthruCentralNode =
        1 << 3,  // Shared       // Enable passthru dockspace: 1) DockSpace() will render a ImGuiCol_WindowBg background
                 // covering everything excepted the Central Node when empty. Meaning the host window should probably
                 // use SetNextWindowBgAlpha(0.0f) prior to Begin() when using this. 2) When Central Node is empty: let
                 // inputs pass-through + won't display a DockingEmptyBg background. See demo for details.
    ImGuiDockNodeFlags_NoSplit =
        1 << 4,  // Shared/Local // Disable splitting the node into smaller nodes. Useful e.g. when embedding dockspaces
                 // into a main root one (the root one may have splitting disabled to reduce confusion). Note: when
                 // turned off, existing splits will be preserved.
    ImGuiDockNodeFlags_NoResize = 1 << 5,  // Shared/Local // Disable resizing node using the splitter/separators.
                                           // Useful with programatically setup dockspaces.
    ImGuiDockNodeFlags_AutoHideTabBar =
        1 << 6  // Shared/Local // Tab bar will automatically hide when there is a single window in the dock node.
};

// Flags for ImGui::BeginDragDropSource(), ImGui::AcceptDragDropPayload()
enum ImGuiDragDropFlags_
{
    ImGuiDragDropFlags_None = 0,
    // BeginDragDropSource() flags
    ImGuiDragDropFlags_SourceNoPreviewTooltip =
        1 << 0,  // By default, a successful call to BeginDragDropSource opens a tooltip so you can display a preview or
                 // description of the source contents. This flag disable this behavior.
    ImGuiDragDropFlags_SourceNoDisableHover =
        1 << 1,  // By default, when dragging we clear data so that IsItemHovered() will return false, to avoid
                 // subsequent user code submitting tooltips. This flag disable this behavior so you can still call
                 // IsItemHovered() on the source item.
    ImGuiDragDropFlags_SourceNoHoldToOpenOthers =
        1 << 2,  // Disable the behavior that allows to open tree nodes and collapsing header by holding over them while
                 // dragging a source item.
    ImGuiDragDropFlags_SourceAllowNullID =
        1 << 3,  // Allow items such as Text(), Image() that have no unique identifier to be used as drag source, by
                 // manufacturing a temporary identifier based on their window-relative position. This is extremely
                 // unusual within the dear imgui ecosystem and so we made it explicit.
    ImGuiDragDropFlags_SourceExtern =
        1 << 4,  // External source (from outside of dear imgui), won't attempt to read current item/window info. Will
                 // always return true. Only one Extern source can be active simultaneously.
    ImGuiDragDropFlags_SourceAutoExpirePayload =
        1 << 5,  // Automatically expire the payload if the source cease to be submitted (otherwise payloads are
                 // persisting while being dragged)
    // AcceptDragDropPayload() flags
    ImGuiDragDropFlags_AcceptBeforeDelivery =
        1 << 10,  // AcceptDragDropPayload() will returns true even before the mouse button is released. You can then
                  // call IsDelivery() to test if the payload needs to be delivered.
    ImGuiDragDropFlags_AcceptNoDrawDefaultRect =
        1 << 11,  // Do not draw the default highlight rectangle when hovering over target.
    ImGuiDragDropFlags_AcceptNoPreviewTooltip =
        1 << 12,  // Request hiding the BeginDragDropSource tooltip from the BeginDragDropTarget site.
    ImGuiDragDropFlags_AcceptPeekOnly =
        ImGuiDragDropFlags_AcceptBeforeDelivery |
        ImGuiDragDropFlags_AcceptNoDrawDefaultRect  // For peeking ahead and inspecting the payload before delivery.
};

// Standard Drag and Drop payload types. You can define you own payload types using short strings. Types starting with
// '_' are defined by Dear ImGui.
#    define IMGUI_PAYLOAD_TYPE_COLOR_3F \
        "_COL3F"  // float[3]: Standard type for colors, without alpha. User code may use this type.
#    define IMGUI_PAYLOAD_TYPE_COLOR_4F "_COL4F"  // float[4]: Standard type for colors. User code may use this type.

// A primary data type
enum ImGuiDataType_
{
    ImGuiDataType_S8,      // signed char / char (with sensible compilers)
    ImGuiDataType_U8,      // unsigned char
    ImGuiDataType_S16,     // short
    ImGuiDataType_U16,     // unsigned short
    ImGuiDataType_S32,     // int
    ImGuiDataType_U32,     // unsigned int
    ImGuiDataType_S64,     // long long / __int64
    ImGuiDataType_U64,     // unsigned long long / unsigned __int64
    ImGuiDataType_Float,   // float
    ImGuiDataType_Double,  // double
    ImGuiDataType_COUNT
};

// A cardinal direction
enum ImGuiDir_
{
    ImGuiDir_None  = -1,
    ImGuiDir_Left  = 0,
    ImGuiDir_Right = 1,
    ImGuiDir_Up    = 2,
    ImGuiDir_Down  = 3,
    ImGuiDir_COUNT
};

// A sorting direction
enum ImGuiSortDirection_
{
    ImGuiSortDirection_None       = 0,
    ImGuiSortDirection_Ascending  = 1,  // Ascending = 0->9, A->Z etc.
    ImGuiSortDirection_Descending = 2   // Descending = 9->0, Z->A etc.
};

// User fill ImGuiIO.KeyMap[] array with indices into the ImGuiIO.KeysDown[512] array
enum ImGuiKey_
{
    ImGuiKey_Tab,
    ImGuiKey_LeftArrow,
    ImGuiKey_RightArrow,
    ImGuiKey_UpArrow,
    ImGuiKey_DownArrow,
    ImGuiKey_PageUp,
    ImGuiKey_PageDown,
    ImGuiKey_Home,
    ImGuiKey_End,
    ImGuiKey_Insert,
    ImGuiKey_Delete,
    ImGuiKey_Backspace,
    ImGuiKey_Space,
    ImGuiKey_Enter,
    ImGuiKey_Escape,
    ImGuiKey_KeyPadEnter,
    ImGuiKey_A,  // for text edit CTRL+A: select all
    ImGuiKey_C,  // for text edit CTRL+C: copy
    ImGuiKey_V,  // for text edit CTRL+V: paste
    ImGuiKey_X,  // for text edit CTRL+X: cut
    ImGuiKey_Y,  // for text edit CTRL+Y: redo
    ImGuiKey_Z,  // for text edit CTRL+Z: undo
    ImGuiKey_COUNT
};

// To test io.KeyMods (which is a combination of individual fields io.KeyCtrl, io.KeyShift, io.KeyAlt set by
// user/backend)
enum ImGuiKeyModFlags_
{
    ImGuiKeyModFlags_None  = 0,
    ImGuiKeyModFlags_Ctrl  = 1 << 0,
    ImGuiKeyModFlags_Shift = 1 << 1,
    ImGuiKeyModFlags_Alt   = 1 << 2,
    ImGuiKeyModFlags_Super = 1 << 3
};

// Gamepad/Keyboard navigation
// Keyboard: Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill
// io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays. Gamepad:  Set io.ConfigFlags |=
// ImGuiConfigFlags_NavEnableGamepad to enable. Backend: set ImGuiBackendFlags_HasGamepad and fill the io.NavInputs[]
// fields before calling NewFrame(). Note that io.NavInputs[] is cleared by EndFrame(). Read instructions in imgui.cpp
// for more details. Download PNG/PSD at http://dearimgui.org/controls_sheets.
enum ImGuiNavInput_
{
    // Gamepad Mapping
    ImGuiNavInput_Activate,  // activate / open / toggle / tweak value       // e.g. Cross  (PS4), A (Xbox), A (Switch),
                             // Space (Keyboard)
    ImGuiNavInput_Cancel,    // cancel / close / exit                        // e.g. Circle (PS4), B (Xbox), B (Switch),
                             // Escape (Keyboard)
    ImGuiNavInput_Input,     // text input / on-screen keyboard              // e.g. Triang.(PS4), Y (Xbox), X (Switch),
                             // Return (Keyboard)
    ImGuiNavInput_Menu,  // tap: toggle menu / hold: focus, move, resize // e.g. Square (PS4), X (Xbox), Y (Switch), Alt
                         // (Keyboard)
    ImGuiNavInput_DpadLeft,     // move / tweak / resize window (w/ PadMenu)    // e.g. D-pad Left/Right/Up/Down
                                // (Gamepads), Arrow keys (Keyboard)
    ImGuiNavInput_DpadRight,    //
    ImGuiNavInput_DpadUp,       //
    ImGuiNavInput_DpadDown,     //
    ImGuiNavInput_LStickLeft,   // scroll / move window (w/ PadMenu)            // e.g. Left Analog Stick
                                // Left/Right/Up/Down
    ImGuiNavInput_LStickRight,  //
    ImGuiNavInput_LStickUp,     //
    ImGuiNavInput_LStickDown,   //
    ImGuiNavInput_FocusPrev,  // next window (w/ PadMenu)                     // e.g. L1 or L2 (PS4), LB or LT (Xbox), L
                              // or ZL (Switch)
    ImGuiNavInput_FocusNext,  // prev window (w/ PadMenu)                     // e.g. R1 or R2 (PS4), RB or RT (Xbox), R
                              // or ZL (Switch)
    ImGuiNavInput_TweakSlow,  // slower tweaks                                // e.g. L1 or L2 (PS4), LB or LT (Xbox), L
                              // or ZL (Switch)
    ImGuiNavInput_TweakFast,  // faster tweaks                                // e.g. R1 or R2 (PS4), RB or RT (Xbox), R
                              // or ZL (Switch)

    // [Internal] Don't use directly! This is used internally to differentiate keyboard from gamepad inputs for
    // behaviors that require to differentiate them. Keyboard behavior that have no corresponding gamepad mapping (e.g.
    // CTRL+TAB) will be directly reading from io.KeysDown[] instead of io.NavInputs[].
    ImGuiNavInput_KeyLeft_,   // move left                                    // = Arrow keys
    ImGuiNavInput_KeyRight_,  // move right
    ImGuiNavInput_KeyUp_,     // move up
    ImGuiNavInput_KeyDown_,   // move down
    ImGuiNavInput_COUNT,
    ImGuiNavInput_InternalStart_ = ImGuiNavInput_KeyLeft_
};

// Configuration flags stored in io.ConfigFlags. Set by user/application.
enum ImGuiConfigFlags_
{
    ImGuiConfigFlags_None              = 0,
    ImGuiConfigFlags_NavEnableKeyboard = 1 << 0,  // Master keyboard navigation enable flag. NewFrame() will
                                                  // automatically fill io.NavInputs[] based on io.KeysDown[].
    ImGuiConfigFlags_NavEnableGamepad =
        1 << 1,  // Master gamepad navigation enable flag. This is mostly to instruct your imgui backend to fill
                 // io.NavInputs[]. Backend also needs to set ImGuiBackendFlags_HasGamepad.
    ImGuiConfigFlags_NavEnableSetMousePos =
        1 << 2,  // Instruct navigation to move the mouse cursor. May be useful on TV/console systems where moving a
                 // virtual mouse is awkward. Will update io.MousePos and set io.WantSetMousePos=true. If enabled you
                 // MUST honor io.WantSetMousePos requests in your backend, otherwise ImGui will react as if the mouse
                 // is jumping around back and forth.
    ImGuiConfigFlags_NavNoCaptureKeyboard =
        1 << 3,  // Instruct navigation to not set the io.WantCaptureKeyboard flag when io.NavActive is set.
    ImGuiConfigFlags_NoMouse = 1 << 4,  // Instruct imgui to clear mouse position/buttons in NewFrame(). This allows
                                        // ignoring the mouse information set by the backend.
    ImGuiConfigFlags_NoMouseCursorChange =
        1 << 5,  // Instruct backend to not alter mouse cursor shape and visibility. Use if the backend cursor changes
                 // are interfering with yours and you don't want to use SetMouseCursor() to change mouse cursor. You
                 // may want to honor requests from imgui by reading GetMouseCursor() yourself instead.

    // [BETA] Docking
    ImGuiConfigFlags_DockingEnable = 1 << 6,  // Docking enable flags.

    // [BETA] Viewports
    // When using viewports it is recommended that your default value for ImGuiCol_WindowBg is opaque (Alpha=1.0) so
    // transition to a viewport won't be noticeable.
    ImGuiConfigFlags_ViewportsEnable =
        1 << 10,  // Viewport enable flags (require both ImGuiBackendFlags_PlatformHasViewports +
                  // ImGuiBackendFlags_RendererHasViewports set by the respective backends)
    ImGuiConfigFlags_DpiEnableScaleViewports =
        1 << 14,  // [BETA: Don't use] FIXME-DPI: Reposition and resize imgui windows when the DpiScale of a viewport
                  // changed (mostly useful for the main viewport hosting other window). Note that resizing the main
                  // window itself is up to your application.
    ImGuiConfigFlags_DpiEnableScaleFonts =
        1 << 15,  // [BETA: Don't use] FIXME-DPI: Request bitmap-scaled fonts to match DpiScale. This is a very
                  // low-quality workaround. The correct way to handle DPI is _currently_ to replace the atlas and/or
                  // fonts in the Platform_OnChangedViewport callback, but this is all early work in progress.

    // User storage (to allow your backend/engine to communicate to code that may be shared between multiple projects.
    // Those flags are not used by core Dear ImGui)
    ImGuiConfigFlags_IsSRGB        = 1 << 20,  // Application is SRGB-aware.
    ImGuiConfigFlags_IsTouchScreen = 1 << 21   // Application is using a touch screen instead of a mouse.
};

// Backend capabilities flags stored in io.BackendFlags. Set by imgui_impl_xxx or custom backend.
enum ImGuiBackendFlags_
{
    ImGuiBackendFlags_None       = 0,
    ImGuiBackendFlags_HasGamepad = 1 << 0,  // Backend Platform supports gamepad and currently has one connected.
    ImGuiBackendFlags_HasMouseCursors =
        1 << 1,  // Backend Platform supports honoring GetMouseCursor() value to change the OS cursor shape.
    ImGuiBackendFlags_HasSetMousePos =
        1 << 2,  // Backend Platform supports io.WantSetMousePos requests to reposition the OS mouse position (only used
                 // if ImGuiConfigFlags_NavEnableSetMousePos is set).
    ImGuiBackendFlags_RendererHasVtxOffset =
        1 << 3,  // Backend Renderer supports ImDrawCmd::VtxOffset. This enables output of large meshes (64K+ vertices)
                 // while still using 16-bit indices.

    // [BETA] Viewports
    ImGuiBackendFlags_PlatformHasViewports = 1 << 10,  // Backend Platform supports multiple viewports.
    ImGuiBackendFlags_HasMouseHoveredViewport =
        1 << 11,  // Backend Platform supports setting io.MouseHoveredViewport to the viewport directly under the mouse
                  // _IGNORING_ viewports with the ImGuiViewportFlags_NoInputs flag and _REGARDLESS_ of whether another
                  // viewport is focused and may be capturing the mouse. This information is _NOT EASY_ to provide
                  // correctly with most high-level engines! Don't set this without studying _carefully_ how the
                  // backends handle ImGuiViewportFlags_NoInputs!
    ImGuiBackendFlags_RendererHasViewports = 1 << 12  // Backend Renderer supports multiple viewports.
};

// Enumeration for PushStyleColor() / PopStyleColor()
enum ImGuiCol_
{
    ImGuiCol_Text,
    ImGuiCol_TextDisabled,
    ImGuiCol_WindowBg,  // Background of normal windows
    ImGuiCol_ChildBg,   // Background of child windows
    ImGuiCol_PopupBg,   // Background of popups, menus, tooltips windows
    ImGuiCol_Border,
    ImGuiCol_BorderShadow,
    ImGuiCol_FrameBg,  // Background of checkbox, radio button, plot, slider, text input
    ImGuiCol_FrameBgHovered,
    ImGuiCol_FrameBgActive,
    ImGuiCol_TitleBg,
    ImGuiCol_TitleBgActive,
    ImGuiCol_TitleBgCollapsed,
    ImGuiCol_MenuBarBg,
    ImGuiCol_ScrollbarBg,
    ImGuiCol_ScrollbarGrab,
    ImGuiCol_ScrollbarGrabHovered,
    ImGuiCol_ScrollbarGrabActive,
    ImGuiCol_CheckMark,
    ImGuiCol_SliderGrab,
    ImGuiCol_SliderGrabActive,
    ImGuiCol_Button,
    ImGuiCol_ButtonHovered,
    ImGuiCol_ButtonActive,
    ImGuiCol_Header,  // Header* colors are used for CollapsingHeader, TreeNode, Selectable, MenuItem
    ImGuiCol_HeaderHovered,
    ImGuiCol_HeaderActive,
    ImGuiCol_Separator,
    ImGuiCol_SeparatorHovered,
    ImGuiCol_SeparatorActive,
    ImGuiCol_ResizeGrip,
    ImGuiCol_ResizeGripHovered,
    ImGuiCol_ResizeGripActive,
    ImGuiCol_Tab,
    ImGuiCol_TabHovered,
    ImGuiCol_TabActive,
    ImGuiCol_TabUnfocused,
    ImGuiCol_TabUnfocusedActive,
    ImGuiCol_DockingPreview,  // Preview overlay color when about to docking something
    ImGuiCol_DockingEmptyBg,  // Background color for empty node (e.g. CentralNode with no window docked into it)
    ImGuiCol_PlotLines,
    ImGuiCol_PlotLinesHovered,
    ImGuiCol_PlotHistogram,
    ImGuiCol_PlotHistogramHovered,
    ImGuiCol_TableHeaderBg,      // Table header background
    ImGuiCol_TableBorderStrong,  // Table outer and header borders (prefer using Alpha=1.0 here)
    ImGuiCol_TableBorderLight,   // Table inner borders (prefer using Alpha=1.0 here)
    ImGuiCol_TableRowBg,         // Table row background (even rows)
    ImGuiCol_TableRowBgAlt,      // Table row background (odd rows)
    ImGuiCol_TextSelectedBg,
    ImGuiCol_DragDropTarget,
    ImGuiCol_NavHighlight,           // Gamepad/keyboard: current highlighted item
    ImGuiCol_NavWindowingHighlight,  // Highlight window when using CTRL+TAB
    ImGuiCol_NavWindowingDimBg,      // Darken/colorize entire screen behind the CTRL+TAB window list, when active
    ImGuiCol_ModalWindowDimBg,       // Darken/colorize entire screen behind a modal window, when one is active
    ImGuiCol_COUNT
};

// Enumeration for PushStyleVar() / PopStyleVar() to temporarily modify the ImGuiStyle structure.
// - The enum only refers to fields of ImGuiStyle which makes sense to be pushed/popped inside UI code.
//   During initialization or between frames, feel free to just poke into ImGuiStyle directly.
// - Tip: Use your programming IDE navigation facilities on the names in the _second column_ below to find the actual
// members and their description.
//   In Visual Studio IDE: CTRL+comma ("Edit.NavigateTo") can follow symbols in comments, whereas CTRL+F12
//   ("Edit.GoToImplementation") cannot. With Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also
//   follow symbols in comments.
// - When changing this enum, you need to update the associated internal table GStyleVarInfo[] accordingly. This is
// where we link enum values to members offset/type.
enum ImGuiStyleVar_
{
    // Enum name --------------------- // Member in ImGuiStyle structure (see ImGuiStyle for descriptions)
    ImGuiStyleVar_Alpha,                // float     Alpha
    ImGuiStyleVar_DisabledAlpha,        // float     DisabledAlpha
    ImGuiStyleVar_WindowPadding,        // ImVec2    WindowPadding
    ImGuiStyleVar_WindowRounding,       // float     WindowRounding
    ImGuiStyleVar_WindowBorderSize,     // float     WindowBorderSize
    ImGuiStyleVar_WindowMinSize,        // ImVec2    WindowMinSize
    ImGuiStyleVar_WindowTitleAlign,     // ImVec2    WindowTitleAlign
    ImGuiStyleVar_ChildRounding,        // float     ChildRounding
    ImGuiStyleVar_ChildBorderSize,      // float     ChildBorderSize
    ImGuiStyleVar_PopupRounding,        // float     PopupRounding
    ImGuiStyleVar_PopupBorderSize,      // float     PopupBorderSize
    ImGuiStyleVar_FramePadding,         // ImVec2    FramePadding
    ImGuiStyleVar_FrameRounding,        // float     FrameRounding
    ImGuiStyleVar_FrameBorderSize,      // float     FrameBorderSize
    ImGuiStyleVar_ItemSpacing,          // ImVec2    ItemSpacing
    ImGuiStyleVar_ItemInnerSpacing,     // ImVec2    ItemInnerSpacing
    ImGuiStyleVar_IndentSpacing,        // float     IndentSpacing
    ImGuiStyleVar_CellPadding,          // ImVec2    CellPadding
    ImGuiStyleVar_ScrollbarSize,        // float     ScrollbarSize
    ImGuiStyleVar_ScrollbarRounding,    // float     ScrollbarRounding
    ImGuiStyleVar_GrabMinSize,          // float     GrabMinSize
    ImGuiStyleVar_GrabRounding,         // float     GrabRounding
    ImGuiStyleVar_TabRounding,          // float     TabRounding
    ImGuiStyleVar_ButtonTextAlign,      // ImVec2    ButtonTextAlign
    ImGuiStyleVar_SelectableTextAlign,  // ImVec2    SelectableTextAlign
    ImGuiStyleVar_COUNT
};

// Flags for InvisibleButton() [extended in imgui_internal.h]
enum ImGuiButtonFlags_
{
    ImGuiButtonFlags_None              = 0,
    ImGuiButtonFlags_MouseButtonLeft   = 1 << 0,  // React on left mouse button (default)
    ImGuiButtonFlags_MouseButtonRight  = 1 << 1,  // React on right mouse button
    ImGuiButtonFlags_MouseButtonMiddle = 1 << 2,  // React on center mouse button

    // [Internal]
    ImGuiButtonFlags_MouseButtonMask_ =
        ImGuiButtonFlags_MouseButtonLeft | ImGuiButtonFlags_MouseButtonRight | ImGuiButtonFlags_MouseButtonMiddle,
    ImGuiButtonFlags_MouseButtonDefault_ = ImGuiButtonFlags_MouseButtonLeft
};

// Flags for ColorEdit3() / ColorEdit4() / ColorPicker3() / ColorPicker4() / ColorButton()
enum ImGuiColorEditFlags_
{
    ImGuiColorEditFlags_None = 0,
    ImGuiColorEditFlags_NoAlpha =
        1 << 1,  //              // ColorEdit, ColorPicker, ColorButton: ignore Alpha component (will only read 3
                 //              components from the input pointer).
    ImGuiColorEditFlags_NoPicker = 1 << 2,  //              // ColorEdit: disable picker when clicking on color square.
    ImGuiColorEditFlags_NoOptions =
        1
        << 3,  //              // ColorEdit: disable toggling options menu when right-clicking on inputs/small preview.
    ImGuiColorEditFlags_NoSmallPreview = 1
                                         << 4,  //              // ColorEdit, ColorPicker: disable color square preview
                                                //              next to the inputs. (e.g. to show only the inputs)
    ImGuiColorEditFlags_NoInputs = 1 << 5,      //              // ColorEdit, ColorPicker: disable inputs sliders/text
                                            //              widgets (e.g. to show only the small preview color square).
    ImGuiColorEditFlags_NoTooltip =
        1 << 6,  //              // ColorEdit, ColorPicker, ColorButton: disable tooltip when hovering the preview.
    ImGuiColorEditFlags_NoLabel =
        1 << 7,  //              // ColorEdit, ColorPicker: disable display of inline text label (the label is still
                 //              forwarded to the tooltip and picker).
    ImGuiColorEditFlags_NoSidePreview =
        1 << 8,  //              // ColorPicker: disable bigger color preview on right side of the picker, use small
                 //              color square preview instead.
    ImGuiColorEditFlags_NoDragDrop =
        1 << 9,  //              // ColorEdit: disable drag and drop target. ColorButton: disable drag and drop source.
    ImGuiColorEditFlags_NoBorder =
        1 << 10,  //              // ColorButton: disable border (which is enforced by default)

    // User Options (right-click on widget to change some of them).
    ImGuiColorEditFlags_AlphaBar =
        1 << 16,  //              // ColorEdit, ColorPicker: show vertical alpha bar/gradient in picker.
    ImGuiColorEditFlags_AlphaPreview =
        1 << 17,  //              // ColorEdit, ColorPicker, ColorButton: display preview as a transparent color over a
                  //              checkerboard, instead of opaque.
    ImGuiColorEditFlags_AlphaPreviewHalf = 1 << 18,  //              // ColorEdit, ColorPicker, ColorButton: display
                                                     //              half opaque / half checkerboard, instead of opaque.
    ImGuiColorEditFlags_HDR =
        1 << 19,  //              // (WIP) ColorEdit: Currently only disable 0.0f..1.0f limits in RGBA edition (note:
                  //              you probably want to use ImGuiColorEditFlags_Float flag as well).
    ImGuiColorEditFlags_DisplayRGB = 1 << 20,  // [Display]    // ColorEdit: override _display_ type among RGB/HSV/Hex.
                                               // ColorPicker: select any combination using one or more of RGB/HSV/Hex.
    ImGuiColorEditFlags_DisplayHSV = 1 << 21,  // [Display]    // "
    ImGuiColorEditFlags_DisplayHex = 1 << 22,  // [Display]    // "
    ImGuiColorEditFlags_Uint8 =
        1 << 23,  // [DataType]   // ColorEdit, ColorPicker, ColorButton: _display_ values formatted as 0..255.
    ImGuiColorEditFlags_Float =
        1 << 24,  // [DataType]   // ColorEdit, ColorPicker, ColorButton: _display_ values formatted as 0.0f..1.0f
                  // floats instead of 0..255 integers. No round-trip of value via integers.
    ImGuiColorEditFlags_PickerHueBar   = 1 << 25,  // [Picker]     // ColorPicker: bar for Hue, rectangle for Sat/Value.
    ImGuiColorEditFlags_PickerHueWheel = 1
                                         << 26,  // [Picker]     // ColorPicker: wheel for Hue, triangle for Sat/Value.
    ImGuiColorEditFlags_InputRGB =
        1 << 27,  // [Input]      // ColorEdit, ColorPicker: input and output data in RGB format.
    ImGuiColorEditFlags_InputHSV =
        1 << 28,  // [Input]      // ColorEdit, ColorPicker: input and output data in HSV format.

    // Defaults Options. You can set application defaults using SetColorEditOptions(). The intent is that you probably
    // don't want to override them in most of your calls. Let the user choose via the option menu and/or call
    // SetColorEditOptions() once during startup.
    ImGuiColorEditFlags_DefaultOptions_ = ImGuiColorEditFlags_Uint8 | ImGuiColorEditFlags_DisplayRGB |
                                          ImGuiColorEditFlags_InputRGB | ImGuiColorEditFlags_PickerHueBar,

    // [Internal] Masks
    ImGuiColorEditFlags_DisplayMask_ =
        ImGuiColorEditFlags_DisplayRGB | ImGuiColorEditFlags_DisplayHSV | ImGuiColorEditFlags_DisplayHex,
    ImGuiColorEditFlags_DataTypeMask_ = ImGuiColorEditFlags_Uint8 | ImGuiColorEditFlags_Float,
    ImGuiColorEditFlags_PickerMask_   = ImGuiColorEditFlags_PickerHueWheel | ImGuiColorEditFlags_PickerHueBar,
    ImGuiColorEditFlags_InputMask_    = ImGuiColorEditFlags_InputRGB | ImGuiColorEditFlags_InputHSV

// Obsolete names (will be removed)
#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    ,
    ImGuiColorEditFlags_RGB = ImGuiColorEditFlags_DisplayRGB,
    ImGuiColorEditFlags_HSV = ImGuiColorEditFlags_DisplayHSV,
    ImGuiColorEditFlags_HEX = ImGuiColorEditFlags_DisplayHex  // [renamed in 1.69]
#    endif
};

// Flags for DragFloat(), DragInt(), SliderFloat(), SliderInt() etc.
// We use the same sets of flags for DragXXX() and SliderXXX() functions as the features are the same and it makes it
// easier to swap them.
enum ImGuiSliderFlags_
{
    ImGuiSliderFlags_None        = 0,
    ImGuiSliderFlags_AlwaysClamp = 1 << 4,  // Clamp value to min/max bounds when input manually with CTRL+Click. By
                                            // default CTRL+Click allows going out of bounds.
    ImGuiSliderFlags_Logarithmic =
        1 << 5,  // Make the widget logarithmic (linear otherwise). Consider using ImGuiSliderFlags_NoRoundToFormat with
                 // this if using a format-string with small amount of digits.
    ImGuiSliderFlags_NoRoundToFormat = 1 << 6,  // Disable rounding underlying value to match precision of the display
                                                // format string (e.g. %.3f values are rounded to those 3 digits)
    ImGuiSliderFlags_NoInput =
        1 << 7,  // Disable CTRL+Click or Enter key allowing to input text directly into the widget
    ImGuiSliderFlags_InvalidMask_ =
        0x7000000F  // [Internal] We treat using those bits as being potentially a 'float power' argument from the
                    // previous API that has got miscast to this enum, and will trigger an assert if needed.

// Obsolete names (will be removed)
#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    ,
    ImGuiSliderFlags_ClampOnInput = ImGuiSliderFlags_AlwaysClamp  // [renamed in 1.79]
#    endif
};

// Identify a mouse button.
// Those values are guaranteed to be stable and we frequently use 0/1 directly. Named enums provided for convenience.
enum ImGuiMouseButton_
{
    ImGuiMouseButton_Left   = 0,
    ImGuiMouseButton_Right  = 1,
    ImGuiMouseButton_Middle = 2,
    ImGuiMouseButton_COUNT  = 5
};

// Enumeration for GetMouseCursor()
// User code may request backend to display given cursor by calling SetMouseCursor(), which is why we have some cursors
// that are marked unused here
enum ImGuiMouseCursor_
{
    ImGuiMouseCursor_None  = -1,
    ImGuiMouseCursor_Arrow = 0,
    ImGuiMouseCursor_TextInput,   // When hovering over InputText, etc.
    ImGuiMouseCursor_ResizeAll,   // (Unused by Dear ImGui functions)
    ImGuiMouseCursor_ResizeNS,    // When hovering over an horizontal border
    ImGuiMouseCursor_ResizeEW,    // When hovering over a vertical border or a column
    ImGuiMouseCursor_ResizeNESW,  // When hovering over the bottom-left corner of a window
    ImGuiMouseCursor_ResizeNWSE,  // When hovering over the bottom-right corner of a window
    ImGuiMouseCursor_Hand,        // (Unused by Dear ImGui functions. Use for e.g. hyperlinks)
    ImGuiMouseCursor_NotAllowed,  // When hovering something with disallowed interaction. Usually a crossed circle.
    ImGuiMouseCursor_COUNT
};

// Enumeration for ImGui::SetWindow***(), SetNextWindow***(), SetNextItem***() functions
// Represent a condition.
// Important: Treat as a regular enum! Do NOT combine multiple values using binary operators! All the functions above
// treat 0 as a shortcut to ImGuiCond_Always.
enum ImGuiCond_
{
    ImGuiCond_None   = 0,       // No condition (always set the variable), same as _Always
    ImGuiCond_Always = 1 << 0,  // No condition (always set the variable)
    ImGuiCond_Once   = 1 << 1,  // Set the variable once per runtime session (only the first call will succeed)
    ImGuiCond_FirstUseEver =
        1 << 2,  // Set the variable if the object/window has no persistently saved data (no entry in .ini file)
    ImGuiCond_Appearing =
        1 << 3  // Set the variable if the object/window is appearing after being hidden/inactive (or the first time)
};

//-----------------------------------------------------------------------------
// [SECTION] Helpers: Memory allocations macros, ImVector<>
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// IM_MALLOC(), IM_FREE(), IM_NEW(), IM_PLACEMENT_NEW(), IM_DELETE()
// We call C++ constructor on own allocated memory via the placement "new(ptr) Type()" syntax.
// Defining a custom placement new() with a custom parameter allows us to bypass including <new> which on some platforms
// complains when user has disabled exceptions.
//-----------------------------------------------------------------------------

struct ImNewWrapper
{};
inline void* operator new(size_t, ImNewWrapper, void* ptr)
{
    return ptr;
}
inline void operator delete(void*, ImNewWrapper, void*) {}  // This is only required so we can use the symmetrical new()
#    define IM_ALLOC(_SIZE) ImGui::MemAlloc(_SIZE)
#    define IM_FREE(_PTR) ImGui::MemFree(_PTR)
#    define IM_PLACEMENT_NEW(_PTR) new (ImNewWrapper(), _PTR)
#    define IM_NEW(_TYPE) new (ImNewWrapper(), ImGui::MemAlloc(sizeof(_TYPE))) _TYPE
template <typename T>
void IM_DELETE(T* p)
{
    if (p)
    {
        p->~T();
        ImGui::MemFree(p);
    }
}

//-----------------------------------------------------------------------------
// ImVector<>
// Lightweight std::vector<>-like class to avoid dragging dependencies (also, some implementations of STL with debug
// enabled are absurdly slow, we bypass it so our code runs fast in debug).
//-----------------------------------------------------------------------------
// - You generally do NOT need to care or use this ever. But we need to make it available in imgui.h because some of our
// public structures are relying on it.
// - We use std-like naming convention here, which is a little unusual for this codebase.
// - Important: clear() frees memory, resize(0) keep the allocated buffer. We use resize(0) a lot to intentionally
// recycle allocated buffers across frames and amortize our costs.
// - Important: our implementation does NOT call C++ constructors/destructors, we treat everything as raw data! This is
// intentional but be extra mindful of that,
//   Do NOT use this class as a std::vector replacement in your own code! Many of the structures used by dear imgui can
//   be safely initialized by a zero-memset.
//-----------------------------------------------------------------------------

IM_MSVC_RUNTIME_CHECKS_OFF
template <typename T>
struct ImVector
{
    int Size;
    int Capacity;
    T* Data;

    // Provide standard typedefs but we don't use them ourselves.
    typedef T value_type;
    typedef value_type* iterator;
    typedef const value_type* const_iterator;

    // Constructors, destructor
    inline ImVector()
    {
        Size = Capacity = 0;
        Data            = NULL;
    }
    inline ImVector(const ImVector<T>& src)
    {
        Size = Capacity = 0;
        Data            = NULL;
        operator        =(src);
    }
    inline ImVector<T>& operator=(const ImVector<T>& src)
    {
        clear();
        resize(src.Size);
        memcpy(Data, src.Data, (size_t)Size * sizeof(T));
        return *this;
    }
    inline ~ImVector()
    {
        if (Data)
            IM_FREE(Data);
    }  // Important: does not destruct anything

    inline void clear()
    {
        if (Data)
        {
            Size = Capacity = 0;
            IM_FREE(Data);
            Data = NULL;
        }
    }  // Important: does not destruct anything
    inline void clear_delete()
    {
        for (int n = 0; n < Size; n++)
            IM_DELETE(Data[n]);
        clear();
    }  // Important: never called automatically! always explicit.
    inline void clear_destruct()
    {
        for (int n = 0; n < Size; n++)
            Data[n].~T();
        clear();
    }  // Important: never called automatically! always explicit.

    inline bool empty() const { return Size == 0; }
    inline int size() const { return Size; }
    inline int size_in_bytes() const { return Size * (int)sizeof(T); }
    inline int max_size() const { return 0x7FFFFFFF / (int)sizeof(T); }
    inline int capacity() const { return Capacity; }
    inline T& operator[](int i)
    {
        IM_ASSERT(i >= 0 && i < Size);
        return Data[i];
    }
    inline const T& operator[](int i) const
    {
        IM_ASSERT(i >= 0 && i < Size);
        return Data[i];
    }

    inline T* begin() { return Data; }
    inline const T* begin() const { return Data; }
    inline T* end() { return Data + Size; }
    inline const T* end() const { return Data + Size; }
    inline T& front()
    {
        IM_ASSERT(Size > 0);
        return Data[0];
    }
    inline const T& front() const
    {
        IM_ASSERT(Size > 0);
        return Data[0];
    }
    inline T& back()
    {
        IM_ASSERT(Size > 0);
        return Data[Size - 1];
    }
    inline const T& back() const
    {
        IM_ASSERT(Size > 0);
        return Data[Size - 1];
    }
    inline void swap(ImVector<T>& rhs)
    {
        int rhs_size = rhs.Size;
        rhs.Size     = Size;
        Size         = rhs_size;
        int rhs_cap  = rhs.Capacity;
        rhs.Capacity = Capacity;
        Capacity     = rhs_cap;
        T* rhs_data  = rhs.Data;
        rhs.Data     = Data;
        Data         = rhs_data;
    }

    inline int _grow_capacity(int sz) const
    {
        int new_capacity = Capacity ? (Capacity + Capacity / 2) : 8;
        return new_capacity > sz ? new_capacity : sz;
    }
    inline void resize(int new_size)
    {
        if (new_size > Capacity)
            reserve(_grow_capacity(new_size));
        Size = new_size;
    }
    inline void resize(int new_size, const T& v)
    {
        if (new_size > Capacity)
            reserve(_grow_capacity(new_size));
        if (new_size > Size)
            for (int n = Size; n < new_size; n++)
                memcpy(&Data[n], &v, sizeof(v));
        Size = new_size;
    }
    inline void shrink(int new_size)
    {
        IM_ASSERT(new_size <= Size);
        Size = new_size;
    }  // Resize a vector to a smaller size, guaranteed not to cause a reallocation
    inline void reserve(int new_capacity)
    {
        if (new_capacity <= Capacity)
            return;
        T* new_data = (T*)IM_ALLOC((size_t)new_capacity * sizeof(T));
        if (Data)
        {
            memcpy(new_data, Data, (size_t)Size * sizeof(T));
            IM_FREE(Data);
        }
        Data     = new_data;
        Capacity = new_capacity;
    }

    // NB: It is illegal to call push_back/push_front/insert with a reference pointing inside the ImVector data itself!
    // e.g. v.push_back(v[10]) is forbidden.
    inline void push_back(const T& v)
    {
        if (Size == Capacity)
            reserve(_grow_capacity(Size + 1));
        memcpy(&Data[Size], &v, sizeof(v));
        Size++;
    }
    inline void pop_back()
    {
        IM_ASSERT(Size > 0);
        Size--;
    }
    inline void push_front(const T& v)
    {
        if (Size == 0)
            push_back(v);
        else
            insert(Data, v);
    }
    inline T* erase(const T* it)
    {
        IM_ASSERT(it >= Data && it < Data + Size);
        const ptrdiff_t off = it - Data;
        memmove(Data + off, Data + off + 1, ((size_t)Size - (size_t)off - 1) * sizeof(T));
        Size--;
        return Data + off;
    }
    inline T* erase(const T* it, const T* it_last)
    {
        IM_ASSERT(it >= Data && it < Data + Size && it_last > it && it_last <= Data + Size);
        const ptrdiff_t count = it_last - it;
        const ptrdiff_t off   = it - Data;
        memmove(Data + off, Data + off + count, ((size_t)Size - (size_t)off - count) * sizeof(T));
        Size -= (int)count;
        return Data + off;
    }
    inline T* erase_unsorted(const T* it)
    {
        IM_ASSERT(it >= Data && it < Data + Size);
        const ptrdiff_t off = it - Data;
        if (it < Data + Size - 1)
            memcpy(Data + off, Data + Size - 1, sizeof(T));
        Size--;
        return Data + off;
    }
    inline T* insert(const T* it, const T& v)
    {
        IM_ASSERT(it >= Data && it <= Data + Size);
        const ptrdiff_t off = it - Data;
        if (Size == Capacity)
            reserve(_grow_capacity(Size + 1));
        if (off < (int)Size)
            memmove(Data + off + 1, Data + off, ((size_t)Size - (size_t)off) * sizeof(T));
        memcpy(&Data[off], &v, sizeof(v));
        Size++;
        return Data + off;
    }
    inline bool contains(const T& v) const
    {
        const T* data     = Data;
        const T* data_end = Data + Size;
        while (data < data_end)
            if (*data++ == v)
                return true;
        return false;
    }
    inline T* find(const T& v)
    {
        T* data           = Data;
        const T* data_end = Data + Size;
        while (data < data_end)
            if (*data == v)
                break;
            else
                ++data;
        return data;
    }
    inline const T* find(const T& v) const
    {
        const T* data     = Data;
        const T* data_end = Data + Size;
        while (data < data_end)
            if (*data == v)
                break;
            else
                ++data;
        return data;
    }
    inline bool find_erase(const T& v)
    {
        const T* it = find(v);
        if (it < Data + Size)
        {
            erase(it);
            return true;
        }
        return false;
    }
    inline bool find_erase_unsorted(const T& v)
    {
        const T* it = find(v);
        if (it < Data + Size)
        {
            erase_unsorted(it);
            return true;
        }
        return false;
    }
    inline int index_from_ptr(const T* it) const
    {
        IM_ASSERT(it >= Data && it < Data + Size);
        const ptrdiff_t off = it - Data;
        return (int)off;
    }
};
IM_MSVC_RUNTIME_CHECKS_RESTORE

//-----------------------------------------------------------------------------
// [SECTION] ImGuiStyle
//-----------------------------------------------------------------------------
// You may modify the ImGui::GetStyle() main instance during initialization and before NewFrame().
// During the frame, use ImGui::PushStyleVar(ImGuiStyleVar_XXXX)/PopStyleVar() to alter the main style values,
// and ImGui::PushStyleColor(ImGuiCol_XXX)/PopStyleColor() for colors.
//-----------------------------------------------------------------------------

struct ImGuiStyle
{
    float Alpha;  // Global alpha applies to everything in Dear ImGui.
    float
        DisabledAlpha;  // Additional alpha multiplier applied by BeginDisabled(). Multiply over current value of Alpha.
    ImVec2 WindowPadding;    // Padding within a window.
    float WindowRounding;    // Radius of window corners rounding. Set to 0.0f to have rectangular windows. Large values
                             // tend to lead to variety of artifacts and are not recommended.
    float WindowBorderSize;  // Thickness of border around windows. Generally set to 0.0f or 1.0f. (Other values are not
                             // well tested and more CPU/GPU costly).
    ImVec2 WindowMinSize;    // Minimum window size. This is a global setting. If you want to constraint individual
                             // windows, use SetNextWindowSizeConstraints().
    ImVec2 WindowTitleAlign;  // Alignment for title bar text. Defaults to (0.0f,0.5f) for left-aligned,vertically
                              // centered.
    ImGuiDir WindowMenuButtonPosition;  // Side of the collapsing/docking button in the title bar (None/Left/Right).
                                        // Defaults to ImGuiDir_Left.
    float ChildRounding;      // Radius of child window corners rounding. Set to 0.0f to have rectangular windows.
    float ChildBorderSize;    // Thickness of border around child windows. Generally set to 0.0f or 1.0f. (Other values
                              // are not well tested and more CPU/GPU costly).
    float PopupRounding;      // Radius of popup window corners rounding. (Note that tooltip windows use WindowRounding)
    float PopupBorderSize;    // Thickness of border around popup/tooltip windows. Generally set to 0.0f or 1.0f. (Other
                              // values are not well tested and more CPU/GPU costly).
    ImVec2 FramePadding;      // Padding within a framed rectangle (used by most widgets).
    float FrameRounding;      // Radius of frame corners rounding. Set to 0.0f to have rectangular frame (used by most
                              // widgets).
    float FrameBorderSize;    // Thickness of border around frames. Generally set to 0.0f or 1.0f. (Other values are not
                              // well tested and more CPU/GPU costly).
    ImVec2 ItemSpacing;       // Horizontal and vertical spacing between widgets/lines.
    ImVec2 ItemInnerSpacing;  // Horizontal and vertical spacing between within elements of a composed widget (e.g. a
                              // slider and its label).
    ImVec2 CellPadding;       // Padding within a table cell
    ImVec2 TouchExtraPadding;  // Expand reactive bounding box for touch-based system where touch position is not
                               // accurate enough. Unfortunately we don't sort widgets so priority on overlap will
                               // always be given to the first widget. So don't grow this too much!
    float IndentSpacing;       // Horizontal indentation when e.g. entering a tree node. Generally == (FontSize +
                               // FramePadding.x*2).
    float ColumnsMinSpacing;   // Minimum horizontal spacing between two columns. Preferably > (FramePadding.x + 1).
    float ScrollbarSize;       // Width of the vertical scrollbar, Height of the horizontal scrollbar.
    float ScrollbarRounding;   // Radius of grab corners for scrollbar.
    float GrabMinSize;         // Minimum width/height of a grab box for slider/scrollbar.
    float GrabRounding;        // Radius of grabs corners rounding. Set to 0.0f to have rectangular slider grabs.
    float LogSliderDeadzone;  // The size in pixels of the dead-zone around zero on logarithmic sliders that cross zero.
    float TabRounding;        // Radius of upper corners of a tab. Set to 0.0f to have rectangular tabs.
    float TabBorderSize;      // Thickness of border around tabs.
    float TabMinWidthForCloseButton;  // Minimum width for close button to appears on an unselected tab when hovered.
                                      // Set to 0.0f to always show when hovering, set to FLT_MAX to never show close
                                      // button unless selected.
    ImGuiDir ColorButtonPosition;     // Side of the color button in the ColorEdit4 widget (left/right). Defaults to
                                      // ImGuiDir_Right.
    ImVec2 ButtonTextAlign;      // Alignment of button text when button is larger than text. Defaults to (0.5f, 0.5f)
                                 // (centered).
    ImVec2 SelectableTextAlign;  // Alignment of selectable text. Defaults to (0.0f, 0.0f) (top-left aligned). It's
                                 // generally important to keep this left-aligned if you want to lay multiple items on a
                                 // same line.
    ImVec2 DisplayWindowPadding;  // Window position are clamped to be visible within the display area or monitors by at
                                  // least this amount. Only applies to regular windows.
    ImVec2 DisplaySafeAreaPadding;  // If you cannot see the edges of your screen (e.g. on a TV) increase the safe area
                                    // padding. Apply to popups/tooltips as well regular windows. NB: Prefer configuring
                                    // your TV sets correctly!
    float MouseCursorScale;  // Scale software rendered mouse cursor (when io.MouseDrawCursor is enabled). We apply
                             // per-monitor DPI scaling over this scale. May be removed later.
    bool AntiAliasedLines;  // Enable anti-aliased lines/borders. Disable if you are really tight on CPU/GPU. Latched at
                            // the beginning of the frame (copied to ImDrawList).
    bool AntiAliasedLinesUseTex;  // Enable anti-aliased lines/borders using textures where possible. Require backend to
                                  // render with bilinear filtering. Latched at the beginning of the frame (copied to
                                  // ImDrawList).
    bool AntiAliasedFill;         // Enable anti-aliased edges around filled shapes (rounded rectangles, circles, etc.).
                           // Disable if you are really tight on CPU/GPU. Latched at the beginning of the frame (copied
                           // to ImDrawList).
    float CurveTessellationTol;  // Tessellation tolerance when using PathBezierCurveTo() without a specific number of
                                 // segments. Decrease for highly tessellated curves (higher quality, more polygons),
                                 // increase to reduce quality.
    float CircleTessellationMaxError;  // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or
                                       // drawing rounded corner rectangles with no explicit segment count specified.
                                       // Decrease for higher quality but more geometry.
    ImVec4 Colors[ImGuiCol_COUNT];

    IMGUI_API ImGuiStyle();
    IMGUI_API void ScaleAllSizes(float scale_factor);
};

//-----------------------------------------------------------------------------
// [SECTION] ImGuiIO
//-----------------------------------------------------------------------------
// Communicate most settings and inputs/outputs to Dear ImGui using this structure.
// Access via ImGui::GetIO(). Read 'Programmer guide' section in .cpp file for general usage.
//-----------------------------------------------------------------------------

struct ImGuiIO
{
    //------------------------------------------------------------------
    // Configuration (fill once)                // Default value
    //------------------------------------------------------------------

    ImGuiConfigFlags ConfigFlags;    // = 0              // See ImGuiConfigFlags_ enum. Set by user/application.
                                     // Gamepad/keyboard navigation options, etc.
    ImGuiBackendFlags BackendFlags;  // = 0              // See ImGuiBackendFlags_ enum. Set by backend (imgui_impl_xxx
                                     // files or custom backend) to communicate features supported by the backend.
    ImVec2 DisplaySize;   // <unset>          // Main display size, in pixels (generally == GetMainViewport()->Size)
    float DeltaTime;      // = 1.0f/60.0f     // Time elapsed since last frame, in seconds.
    float IniSavingRate;  // = 5.0f           // Minimum time between saving positions/sizes to .ini file, in seconds.
    const char* IniFilename;  // = "imgui.ini"    // Path to .ini file (important: default "imgui.ini" is relative to
                              // current working dir!). Set NULL to disable automatic .ini loading/saving or if you want
                              // to manually call LoadIniSettingsXXX() / SaveIniSettingsXXX() functions.
    const char* LogFilename;  // = "imgui_log.txt"// Path to .log file (default parameter to ImGui::LogToFile when no
                              // file is specified).
    float MouseDoubleClickTime;     // = 0.30f          // Time for a double-click, in seconds.
    float MouseDoubleClickMaxDist;  // = 6.0f           // Distance threshold to stay in to validate a double-click, in
                                    // pixels.
    float MouseDragThreshold;       // = 6.0f           // Distance threshold before considering we are dragging.
    int KeyMap[ImGuiKey_COUNT];     // <unset>          // Map of indices into the KeysDown[512] entries array which
                                    // represent your "native" keyboard state.
    float KeyRepeatDelay;  // = 0.250f         // When holding a key/button, time before it starts repeating, in seconds
                           // (for buttons in Repeat mode, etc.).
    float KeyRepeatRate;   // = 0.050f         // When holding a key/button, rate at which it repeats, in seconds.
    void* UserData;        // = NULL           // Store your own data for retrieval by callbacks.

    ImFontAtlas*
        Fonts;  // <auto>           // Font atlas: load, rasterize and pack one or more fonts into a single texture.
    float FontGlobalScale;      // = 1.0f           // Global scale all fonts
    bool FontAllowUserScaling;  // = false          // Allow user scaling text of individual window with CTRL+Wheel.
    ImFont* FontDefault;        // = NULL           // Font to use on NewFrame(). Use NULL to uses Fonts->Fonts[0].
    ImVec2 DisplayFramebufferScale;  // = (1, 1)         // For retina display or other situations where window
                                     // coordinates are different from framebuffer coordinates. This generally ends up
                                     // in ImDrawData::FramebufferScale.

    // Docking options (when ImGuiConfigFlags_DockingEnable is set)
    bool ConfigDockingNoSplit;  // = false          // Simplified docking mode: disable window splitting, so docking is
                                // limited to merging multiple windows together into tab-bars.
    bool ConfigDockingAlwaysTabBar;  // = false          // [BETA] [FIXME: This currently creates regression with
                                     // auto-sizing and general overhead] Make every single floating window display
                                     // within a docking node.
    bool ConfigDockingTransparentPayload;  // = false          // [BETA] Make window or viewport transparent when
                                           // docking and only display docking boxes on the target viewport. Useful if
                                           // rendering of multiple viewport cannot be synced. Best used with
                                           // ConfigViewportsNoAutoMerge.

    // Viewport options (when ImGuiConfigFlags_ViewportsEnable is set)
    bool ConfigViewportsNoAutoMerge;  // = false;         // Set to make all floating imgui windows always create their
                                      // own viewport. Otherwise, they are merged into the main host viewports when
                                      // overlapping it. May also set ImGuiViewportFlags_NoAutoMerge on individual
                                      // viewport.
    bool ConfigViewportsNoTaskBarIcon;    // = false          // Disable default OS task bar icon flag for secondary
                                          // viewports. When a viewport doesn't want a task bar icon,
                                          // ImGuiViewportFlags_NoTaskBarIcon will be set on it.
    bool ConfigViewportsNoDecoration;     // = true           // Disable default OS window decoration flag for secondary
                                          // viewports. When a viewport doesn't want window decorations,
                                          // ImGuiViewportFlags_NoDecoration will be set on it. Enabling decoration can
                                          // create subsequent issues at OS levels (e.g. minimum window size).
    bool ConfigViewportsNoDefaultParent;  // = false          // Disable default OS parenting to main viewport for
                                          // secondary viewports. By default, viewports are marked with ParentViewportId
                                          // = <main_viewport>, expecting the platform backend to setup a parent/child
                                          // relationship between the OS windows (some backend may ignore this). Set to
                                          // true if you want the default to be 0, then all viewports will be top-level
                                          // OS windows.

    // Miscellaneous options
    bool MouseDrawCursor;  // = false          // Request ImGui to draw a mouse cursor for you (if you are on a platform
                           // without a mouse cursor). Cannot be easily renamed to 'io.ConfigXXX' because this is
                           // frequently used by backend implementations.
    bool ConfigMacOSXBehaviors;  // = defined(__APPLE__) // OS X style: Text editing cursor movement using Alt instead
                                 // of Ctrl, Shortcuts using Cmd/Super instead of Ctrl, Line/Text Start and End using
                                 // Cmd+Arrows instead of Home/End, Double click selects by word instead of selecting
                                 // whole text, Multi-selection in lists uses Cmd/Super instead of Ctrl.
    bool ConfigInputTextCursorBlink;  // = true           // Enable blinking cursor (optional as some users consider it
                                      // to be distracting).
    bool ConfigDragClickToInputText;  // = false          // [BETA] Enable turning DragXXX widgets into text input with
                                      // a simple mouse click-release (without moving). Not desirable on devices without
                                      // a keyboard.
    bool ConfigWindowsResizeFromEdges;  // = true           // Enable resizing of windows from their edges and from the
                                        // lower-left corner. This requires (io.BackendFlags &
                                        // ImGuiBackendFlags_HasMouseCursors) because it needs mouse cursor feedback.
                                        // (This used to be a per-window ImGuiWindowFlags_ResizeFromAnySide flag)
    bool ConfigWindowsMoveFromTitleBarOnly;  // = false       // Enable allowing to move windows only when clicking on
                                             // their title bar. Does not apply to windows without a title bar.
    float ConfigMemoryCompactTimer;  // = 60.0f          // Timer (in seconds) to free transient windows/tables memory
                                     // buffers when unused. Set to -1.0f to disable.

    //------------------------------------------------------------------
    // Platform Functions
    // (the imgui_impl_xxxx backend files are setting those up for you)
    //------------------------------------------------------------------

    // Optional: Platform/Renderer backend name (informational only! will be displayed in About Window) + User data for
    // backend/wrappers to store their own stuff.
    const char* BackendPlatformName;  // = NULL
    const char* BackendRendererName;  // = NULL
    void* BackendPlatformUserData;    // = NULL           // User data for platform backend
    void* BackendRendererUserData;    // = NULL           // User data for renderer backend
    void* BackendLanguageUserData;    // = NULL           // User data for non C++ programming language backend

    // Optional: Access OS clipboard
    // (default to use native Win32 clipboard on Windows, otherwise uses a private clipboard. Override to access OS
    // clipboard on other architectures)
    const char* (*GetClipboardTextFn)(void* user_data);
    void (*SetClipboardTextFn)(void* user_data, const char* text);
    void* ClipboardUserData;

    //------------------------------------------------------------------
    // Input - Fill before calling NewFrame()
    //------------------------------------------------------------------

    ImVec2 MousePos;    // Mouse position, in pixels. Set to ImVec2(-FLT_MAX, -FLT_MAX) if mouse is unavailable (on
                        // another screen, etc.)
    bool MouseDown[5];  // Mouse buttons: 0=left, 1=right, 2=middle + extras (ImGuiMouseButton_COUNT == 5). Dear ImGui
                        // mostly uses left and right buttons. Others buttons allows us to track if the mouse is being
                        // used by your application + available to user as a convenience via IsMouse** API.
    float MouseWheel;   // Mouse wheel Vertical: 1 unit scrolls about 5 lines text.
    float MouseWheelH;  // Mouse wheel Horizontal. Most users don't have a mouse with an horizontal wheel, may not be
                        // filled by all backends.
    ImGuiID MouseHoveredViewport;  // (Optional) When using multiple viewports: viewport the OS mouse cursor is hovering
                                   // _IGNORING_ viewports with the ImGuiViewportFlags_NoInputs flag, and _REGARDLESS_
                                   // of whether another viewport is focused. Set io.BackendFlags |=
                                   // ImGuiBackendFlags_HasMouseHoveredViewport if you can provide this info. If you
                                   // don't imgui will infer the value using the rectangles and last focused time of the
                                   // viewports it knows about (ignoring other OS windows).
    bool KeyCtrl;                  // Keyboard modifier pressed: Control
    bool KeyShift;                 // Keyboard modifier pressed: Shift
    bool KeyAlt;                   // Keyboard modifier pressed: Alt
    bool KeySuper;                 // Keyboard modifier pressed: Cmd/Super/Windows
    bool KeysDown[512];  // Keyboard keys that are pressed (ideally left in the "native" order your engine has access to
                         // keyboard keys, so you can use your own defines/enums for keys).
    float NavInputs[ImGuiNavInput_COUNT];  // Gamepad inputs. Cleared back to zero by EndFrame(). Keyboard keys will be
                                           // auto-mapped and be written here by NewFrame().

    // Functions
    IMGUI_API void AddInputCharacter(unsigned int c);  // Queue new character input
    IMGUI_API void AddInputCharacterUTF16(
        ImWchar16 c);  // Queue new character input from an UTF-16 character, it can be a surrogate
    IMGUI_API void AddInputCharactersUTF8(const char* str);  // Queue new characters input from an UTF-8 string
    IMGUI_API void AddFocusEvent(
        bool focused);  // Notifies Dear ImGui when hosting platform windows lose or gain input focus
    IMGUI_API void ClearInputCharacters();  // [Internal] Clear the text input buffer manually
    IMGUI_API void ClearInputKeys();        // [Internal] Release all keys

    //------------------------------------------------------------------
    // Output - Updated by NewFrame() or EndFrame()/Render()
    // (when reading from the io.WantCaptureMouse, io.WantCaptureKeyboard flags to dispatch your inputs, it is
    //  generally easier and more correct to use their state BEFORE calling NewFrame(). See FAQ for details!)
    //------------------------------------------------------------------

    bool WantCaptureMouse;  // Set when Dear ImGui will use mouse inputs, in this case do not dispatch them to your main
                            // game/application (either way, always pass on mouse inputs to imgui). (e.g. unclicked
                            // mouse is hovering over an imgui window, widget is active, mouse was clicked over an imgui
                            // window, etc.).
    bool WantCaptureKeyboard;  // Set when Dear ImGui will use keyboard inputs, in this case do not dispatch them to
                               // your main game/application (either way, always pass keyboard inputs to imgui). (e.g.
                               // InputText active, or an imgui window is focused and navigation is enabled, etc.).
    bool WantTextInput;    // Mobile/console: when set, you may display an on-screen keyboard. This is set by Dear ImGui
                           // when it wants textual keyboard input to happen (e.g. when a InputText widget is active).
    bool WantSetMousePos;  // MousePos has been altered, backend should reposition mouse on next frame. Rarely used! Set
                           // only when ImGuiConfigFlags_NavEnableSetMousePos flag is enabled.
    bool WantSaveIniSettings;  // When manual .ini load/save is active (io.IniFilename == NULL), this will be set to
                               // notify your application that you can call SaveIniSettingsToMemory() and save yourself.
                               // Important: clear io.WantSaveIniSettings yourself after saving!
    bool NavActive;  // Keyboard/Gamepad navigation is currently allowed (will handle ImGuiKey_NavXXX events) = a window
                     // is focused and it doesn't use the ImGuiWindowFlags_NoNavInputs flag.
    bool NavVisible;  // Keyboard/Gamepad navigation is visible and allowed (will handle ImGuiKey_NavXXX events).
    float Framerate;  // Rough estimate of application framerate, in frame per second. Solely for convenience. Rolling
                      // average estimation based on io.DeltaTime over 120 frames.
    int MetricsRenderVertices;     // Vertices output during last call to Render()
    int MetricsRenderIndices;      // Indices output during last call to Render() = number of triangles * 3
    int MetricsRenderWindows;      // Number of visible windows
    int MetricsActiveWindows;      // Number of active windows
    int MetricsActiveAllocations;  // Number of active allocations, updated by MemAlloc/MemFree based on current
                                   // context. May be off if you have multiple imgui contexts.
    ImVec2 MouseDelta;  // Mouse delta. Note that this is zero if either current or previous position are invalid
                        // (-FLT_MAX,-FLT_MAX), so a disappearing/reappearing mouse won't have a huge delta.

    //------------------------------------------------------------------
    // [Internal] Dear ImGui will maintain those fields. Forward compatibility not guaranteed!
    //------------------------------------------------------------------

    ImGuiKeyModFlags KeyMods;  // Key mods flags (same as io.KeyCtrl/KeyShift/KeyAlt/KeySuper but merged into flags),
                               // updated by NewFrame()
    ImGuiKeyModFlags KeyModsPrev;  // Previous key mods
    ImVec2 MousePosPrev;  // Previous mouse position (note that MouseDelta is not necessary == MousePos-MousePosPrev, in
                          // case either position is invalid)
    ImVec2 MouseClickedPos[5];   // Position at time of clicking
    double MouseClickedTime[5];  // Time of last click (used to figure out double-click)
    bool MouseClicked[5];        // Mouse button went from !Down to Down
    bool MouseDoubleClicked[5];  // Has mouse button been double-clicked?
    bool MouseReleased[5];       // Mouse button went from Down to !Down
    bool MouseDownOwned[5];  // Track if button was clicked inside a dear imgui window. We don't request mouse capture
                             // from the application if click started outside ImGui bounds.
    bool MouseDownWasDoubleClick[5];    // Track if button down was a double-click
    float MouseDownDuration[5];         // Duration the mouse button has been down (0.0f == just clicked)
    float MouseDownDurationPrev[5];     // Previous time the mouse button has been down
    ImVec2 MouseDragMaxDistanceAbs[5];  // Maximum distance, absolute, on each axis, of how much mouse has traveled from
                                        // the clicking point
    float
        MouseDragMaxDistanceSqr[5];   // Squared maximum distance of how much mouse has traveled from the clicking point
    float KeysDownDuration[512];      // Duration the keyboard key has been down (0.0f == just pressed)
    float KeysDownDurationPrev[512];  // Previous duration the key has been down
    float NavInputsDownDuration[ImGuiNavInput_COUNT];
    float NavInputsDownDurationPrev[ImGuiNavInput_COUNT];
    float PenPressure;  // Touch/Pen pressure (0.0f to 1.0f, should be >0.0f only when MouseDown[0] == true). Helper
                        // storage currently unused by Dear ImGui.
    bool AppFocusLost;
    ImWchar16 InputQueueSurrogate;           // For AddInputCharacterUTF16
    ImVector<ImWchar> InputQueueCharacters;  // Queue of _characters_ input (obtained by platform backend). Fill using
                                             // AddInputCharacter() helper.

    IMGUI_API ImGuiIO();
};

//-----------------------------------------------------------------------------
// [SECTION] Misc data structures
//-----------------------------------------------------------------------------

// Shared state of InputText(), passed as an argument to your callback when a ImGuiInputTextFlags_Callback* flag is
// used. The callback function should return 0 by default. Callbacks (follow a flag name and see comments in
// ImGuiInputTextFlags_ declarations for more details)
// - ImGuiInputTextFlags_CallbackEdit:        Callback on buffer edit (note that InputText() already returns true on
// edit, the callback is useful mainly to manipulate the underlying buffer while focus is active)
// - ImGuiInputTextFlags_CallbackAlways:      Callback on each iteration
// - ImGuiInputTextFlags_CallbackCompletion:  Callback on pressing TAB
// - ImGuiInputTextFlags_CallbackHistory:     Callback on pressing Up/Down arrows
// - ImGuiInputTextFlags_CallbackCharFilter:  Callback on character inputs to replace or discard them. Modify
// 'EventChar' to replace or discard, or return 1 in callback to discard.
// - ImGuiInputTextFlags_CallbackResize:      Callback on buffer capacity changes request (beyond 'buf_size' parameter
// value), allowing the string to grow.
struct ImGuiInputTextCallbackData
{
    ImGuiInputTextFlags EventFlag;  // One ImGuiInputTextFlags_Callback*    // Read-only
    ImGuiInputTextFlags Flags;      // What user passed to InputText()      // Read-only
    void* UserData;                 // What user passed to InputText()      // Read-only

    // Arguments for the different callback events
    // - To modify the text buffer in a callback, prefer using the InsertChars() / DeleteChars() function. InsertChars()
    // will take care of calling the resize callback if necessary.
    // - If you know your edits are not going to resize the underlying buffer allocation, you may modify the contents of
    // 'Buf[]' directly. You need to update 'BufTextLen' accordingly (0 <= BufTextLen < BufSize) and set 'BufDirty'' to
    // true so InputText can update its internal state.
    ImWchar EventChar;  // Character input                      // Read-write   // [CharFilter] Replace character with
                        // another one, or set to zero to drop. return 1 is equivalent to setting EventChar=0;
    ImGuiKey EventKey;  // Key pressed (Up/Down/TAB)            // Read-only    // [Completion,History]
    char* Buf;          // Text buffer                          // Read-write   // [Resize] Can replace pointer /
                        // [Completion,History,Always] Only write to pointed data, don't replace the actual pointer!
    int BufTextLen;     // Text length (in bytes)               // Read-write   // [Resize,Completion,History,Always]
                     // Exclude zero-terminator storage. In C land: == strlen(some_text), in C++ land: string.length()
    int BufSize;  // Buffer size (in bytes) = capacity+1  // Read-only    // [Resize,Completion,History,Always] Include
                  // zero-terminator storage. In C land == ARRAYSIZE(my_char_array), in C++ land: string.capacity()+1
    bool BufDirty;       // Set if you modify Buf/BufTextLen!    // Write        // [Completion,History,Always]
    int CursorPos;       //                                      // Read-write   // [Completion,History,Always]
    int SelectionStart;  //                                      // Read-write   // [Completion,History,Always] == to
                         //                                      SelectionEnd when no selection)
    int SelectionEnd;    //                                      // Read-write   // [Completion,History,Always]

    // Helper functions for text manipulation.
    // Use those function to benefit from the CallbackResize behaviors. Calling those function reset the selection.
    IMGUI_API ImGuiInputTextCallbackData();
    IMGUI_API void DeleteChars(int pos, int bytes_count);
    IMGUI_API void InsertChars(int pos, const char* text, const char* text_end = NULL);
    void SelectAll()
    {
        SelectionStart = 0;
        SelectionEnd   = BufTextLen;
    }
    void ClearSelection() { SelectionStart = SelectionEnd = BufTextLen; }
    bool HasSelection() const { return SelectionStart != SelectionEnd; }
};

// Resizing callback data to apply custom constraint. As enabled by SetNextWindowSizeConstraints(). Callback is called
// during the next Begin(). NB: For basic min/max size constraint on each axis you don't need to use the callback! The
// SetNextWindowSizeConstraints() parameters are enough.
struct ImGuiSizeCallbackData
{
    void* UserData;      // Read-only.   What user passed to SetNextWindowSizeConstraints()
    ImVec2 Pos;          // Read-only.   Window position, for reference.
    ImVec2 CurrentSize;  // Read-only.   Current window size.
    ImVec2 DesiredSize;  // Read-write.  Desired size, based on user's mouse position. Write to this field to restrain
                         // resizing.
};

// [ALPHA] Rarely used / very advanced uses only. Use with SetNextWindowClass() and DockSpace() functions.
// Important: the content of this class is still highly WIP and likely to change and be refactored
// before we stabilize Docking features. Please be mindful if using this.
// Provide hints:
// - To the platform backend via altered viewport flags (enable/disable OS decoration, OS task bar icons, etc.)
// - To the platform backend for OS level parent/child relationships of viewport.
// - To the docking system for various options and filtering.
struct ImGuiWindowClass
{
    ImGuiID ClassId;  // User data. 0 = Default class (unclassed). Windows of different classes cannot be docked with
                      // each others.
    ImGuiID ParentViewportId;  // Hint for the platform backend. If non-zero, the platform backend can create a
                               // parent<>child relationship between the platform windows. Not conforming backends are
                               // free to e.g. parent every viewport to the main viewport or not.
    ImGuiViewportFlags ViewportFlagsOverrideSet;  // Viewport flags to set when a window of this class owns a viewport.
                                                  // This allows you to enforce OS decoration or task bar icon, override
                                                  // the defaults on a per-window basis.
    ImGuiViewportFlags ViewportFlagsOverrideClear;  // Viewport flags to clear when a window of this class owns a
                                                    // viewport. This allows you to enforce OS decoration or task bar
                                                    // icon, override the defaults on a per-window basis.
    ImGuiTabItemFlags TabItemFlagsOverrideSet;  // [EXPERIMENTAL] TabItem flags to set when a window of this class gets
                                                // submitted into a dock node tab bar. May use with
                                                // ImGuiTabItemFlags_Leading or ImGuiTabItemFlags_Trailing.
    ImGuiDockNodeFlags DockNodeFlagsOverrideSet;  // [EXPERIMENTAL] Dock node flags to set when a window of this class
                                                  // is hosted by a dock node (it doesn't have to be selected!)
    bool DockingAlwaysTabBar;    // Set to true to enforce single floating windows of this class always having their own
                                 // docking node (equivalent of setting the global io.ConfigDockingAlwaysTabBar)
    bool DockingAllowUnclassed;  // Set to true to allow windows of this class to be docked/merged with an unclassed
                                 // window. // FIXME-DOCK: Move to DockNodeFlags override?

    ImGuiWindowClass()
    {
        memset(this, 0, sizeof(*this));
        DockingAllowUnclassed = true;
    }
};

// Data payload for Drag and Drop operations: AcceptDragDropPayload(), GetDragDropPayload()
struct ImGuiPayload
{
    // Members
    void* Data;    // Data (copied and owned by dear imgui)
    int DataSize;  // Data size

    // [Internal]
    ImGuiID SourceId;        // Source item id
    ImGuiID SourceParentId;  // Source parent id (if available)
    int DataFrameCount;      // Data timestamp
    char DataType[32 + 1];   // Data type tag (short user-supplied string, 32 characters max)
    bool Preview;   // Set when AcceptDragDropPayload() was called and mouse has been hovering the target item (nb:
                    // handle overlapping drag targets)
    bool Delivery;  // Set when AcceptDragDropPayload() was called and mouse button is released over the target item.

    ImGuiPayload() { Clear(); }
    void Clear()
    {
        SourceId = SourceParentId = 0;
        Data                      = NULL;
        DataSize                  = 0;
        memset(DataType, 0, sizeof(DataType));
        DataFrameCount = -1;
        Preview = Delivery = false;
    }
    bool IsDataType(const char* type) const { return DataFrameCount != -1 && strcmp(type, DataType) == 0; }
    bool IsPreview() const { return Preview; }
    bool IsDelivery() const { return Delivery; }
};

// Sorting specification for one column of a table (sizeof == 12 bytes)
struct ImGuiTableColumnSortSpecs
{
    ImGuiID ColumnUserID;  // User id of the column (if specified by a TableSetupColumn() call)
    ImS16 ColumnIndex;     // Index of the column
    ImS16 SortOrder;  // Index within parent ImGuiTableSortSpecs (always stored in order starting from 0, tables sorted
                      // on a single criteria will always have a 0 here)
    ImGuiSortDirection SortDirection : 8;  // ImGuiSortDirection_Ascending or ImGuiSortDirection_Descending (you can use
                                           // this or SortSign, whichever is more convenient for your sort function)

    ImGuiTableColumnSortSpecs() { memset(this, 0, sizeof(*this)); }
};

// Sorting specifications for a table (often handling sort specs for a single column, occasionally more)
// Obtained by calling TableGetSortSpecs().
// When 'SpecsDirty == true' you can sort your data. It will be true with sorting specs have changed since last call, or
// the first time. Make sure to set 'SpecsDirty = false' after sorting, else you may wastefully sort your data every
// frame!
struct ImGuiTableSortSpecs
{
    const ImGuiTableColumnSortSpecs* Specs;  // Pointer to sort spec array.
    int SpecsCount;  // Sort spec count. Most often 1. May be > 1 when ImGuiTableFlags_SortMulti is enabled. May be == 0
                     // when ImGuiTableFlags_SortTristate is enabled.
    bool SpecsDirty;  // Set to true when specs have changed since last time! Use this to sort again, then clear the
                      // flag.

    ImGuiTableSortSpecs() { memset(this, 0, sizeof(*this)); }
};

//-----------------------------------------------------------------------------
// [SECTION] Helpers (ImGuiOnceUponAFrame, ImGuiTextFilter, ImGuiTextBuffer, ImGuiStorage, ImGuiListClipper, ImColor)
//-----------------------------------------------------------------------------

// Helper: Unicode defines
#    define IM_UNICODE_CODEPOINT_INVALID 0xFFFD  // Invalid Unicode code point (standard value).
#    ifdef IMGUI_USE_WCHAR32
#        define IM_UNICODE_CODEPOINT_MAX 0x10FFFF  // Maximum Unicode code point supported by this build.
#    else
#        define IM_UNICODE_CODEPOINT_MAX 0xFFFF  // Maximum Unicode code point supported by this build.
#    endif

// Helper: Execute a block of code at maximum once a frame. Convenient if you want to quickly create an UI within
// deep-nested code that runs multiple times every frame. Usage: static ImGuiOnceUponAFrame oaf; if (oaf)
// ImGui::Text("This will be called only once per frame");
struct ImGuiOnceUponAFrame
{
    ImGuiOnceUponAFrame() { RefFrame = -1; }
    mutable int RefFrame;
    operator bool() const
    {
        int current_frame = ImGui::GetFrameCount();
        if (RefFrame == current_frame)
            return false;
        RefFrame = current_frame;
        return true;
    }
};

// Helper: Parse and apply text filters. In format "aaaaa[,bbbb][,ccccc]"
struct ImGuiTextFilter
{
    IMGUI_API ImGuiTextFilter(const char* default_filter = "");
    IMGUI_API bool Draw(const char* label = "Filter (inc,-exc)", float width = 0.0f);  // Helper calling InputText+Build
    IMGUI_API bool PassFilter(const char* text, const char* text_end = NULL) const;
    IMGUI_API void Build();
    void Clear()
    {
        InputBuf[0] = 0;
        Build();
    }
    bool IsActive() const { return !Filters.empty(); }

    // [Internal]
    struct ImGuiTextRange
    {
        const char* b;
        const char* e;

        ImGuiTextRange() { b = e = NULL; }
        ImGuiTextRange(const char* _b, const char* _e)
        {
            b = _b;
            e = _e;
        }
        bool empty() const { return b == e; }
        IMGUI_API void split(char separator, ImVector<ImGuiTextRange>* out) const;
    };
    char InputBuf[256];
    ImVector<ImGuiTextRange> Filters;
    int CountGrep;
};

// Helper: Growable text buffer for logging/accumulating text
// (this could be called 'ImGuiTextBuilder' / 'ImGuiStringBuilder')
struct ImGuiTextBuffer
{
    ImVector<char> Buf;
    IMGUI_API static char EmptyString[1];

    ImGuiTextBuffer() {}
    inline char operator[](int i) const
    {
        IM_ASSERT(Buf.Data != NULL);
        return Buf.Data[i];
    }
    const char* begin() const { return Buf.Data ? &Buf.front() : EmptyString; }
    const char* end() const
    {
        return Buf.Data ? &Buf.back() : EmptyString;
    }  // Buf is zero-terminated, so end() will point on the zero-terminator
    int size() const { return Buf.Size ? Buf.Size - 1 : 0; }
    bool empty() const { return Buf.Size <= 1; }
    void clear() { Buf.clear(); }
    void reserve(int capacity) { Buf.reserve(capacity); }
    const char* c_str() const { return Buf.Data ? Buf.Data : EmptyString; }
    IMGUI_API void append(const char* str, const char* str_end = NULL);
    IMGUI_API void appendf(const char* fmt, ...) IM_FMTARGS(2);
    IMGUI_API void appendfv(const char* fmt, va_list args) IM_FMTLIST(2);
};

// Helper: Key->Value storage
// Typically you don't have to worry about this since a storage is held within each Window.
// We use it to e.g. store collapse state for a tree (Int 0/1)
// This is optimized for efficient lookup (dichotomy into a contiguous buffer) and rare insertion (typically tied to
// user interactions aka max once a frame) You can use it as custom user storage for temporary values. Declare your own
// storage if, for example:
// - You want to manipulate the open/close state of a particular sub-tree in your interface (tree node uses Int 0/1 to
// store their state).
// - You want to store custom debug data easily without adding or editing structures in your code (probably not
// efficient, but convenient) Types are NOT stored, so it is up to you to make sure your Key don't collide with
// different types.
struct ImGuiStorage
{
    // [Internal]
    struct ImGuiStoragePair
    {
        ImGuiID key;
        union
        {
            int val_i;
            float val_f;
            void* val_p;
        };
        ImGuiStoragePair(ImGuiID _key, int _val_i)
        {
            key   = _key;
            val_i = _val_i;
        }
        ImGuiStoragePair(ImGuiID _key, float _val_f)
        {
            key   = _key;
            val_f = _val_f;
        }
        ImGuiStoragePair(ImGuiID _key, void* _val_p)
        {
            key   = _key;
            val_p = _val_p;
        }
    };

    ImVector<ImGuiStoragePair> Data;

    // - Get***() functions find pair, never add/allocate. Pairs are sorted so a query is O(log N)
    // - Set***() functions find pair, insertion on demand if missing.
    // - Sorted insertion is costly, paid once. A typical frame shouldn't need to insert any new pair.
    void Clear() { Data.clear(); }
    IMGUI_API int GetInt(ImGuiID key, int default_val = 0) const;
    IMGUI_API void SetInt(ImGuiID key, int val);
    IMGUI_API bool GetBool(ImGuiID key, bool default_val = false) const;
    IMGUI_API void SetBool(ImGuiID key, bool val);
    IMGUI_API float GetFloat(ImGuiID key, float default_val = 0.0f) const;
    IMGUI_API void SetFloat(ImGuiID key, float val);
    IMGUI_API void* GetVoidPtr(ImGuiID key) const;  // default_val is NULL
    IMGUI_API void SetVoidPtr(ImGuiID key, void* val);

    // - Get***Ref() functions finds pair, insert on demand if missing, return pointer. Useful if you intend to do
    // Get+Set.
    // - References are only valid until a new value is added to the storage. Calling a Set***() function or a
    // Get***Ref() function invalidates the pointer.
    // - A typical use case where this is convenient for quick hacking (e.g. add storage during a live Edit&Continue
    // session if you can't modify existing struct)
    //      float* pvar = ImGui::GetFloatRef(key); ImGui::SliderFloat("var", pvar, 0, 100.0f); some_var += *pvar;
    IMGUI_API int* GetIntRef(ImGuiID key, int default_val = 0);
    IMGUI_API bool* GetBoolRef(ImGuiID key, bool default_val = false);
    IMGUI_API float* GetFloatRef(ImGuiID key, float default_val = 0.0f);
    IMGUI_API void** GetVoidPtrRef(ImGuiID key, void* default_val = NULL);

    // Use on your own storage if you know only integer are being stored (open/close all tree nodes)
    IMGUI_API void SetAllInt(int val);

    // For quicker full rebuild of a storage (instead of an incremental one), you may add all your contents and then
    // sort once.
    IMGUI_API void BuildSortByKey();
};

// Helper: Manually clip large list of items.
// If you are submitting lots of evenly spaced items and you have a random access to the list, you can perform coarse
// clipping based on visibility to save yourself from processing those items at all.
// The clipper calculates the range of visible items and advance the cursor to compensate for the non-visible items we
// have skipped. (Dear ImGui already clip items based on their bounds but it needs to measure text size to do so,
// whereas manual coarse clipping before submission makes this cost and your own data fetching/submission cost almost
// null) Usage:
//   ImGuiListClipper clipper;
//   clipper.Begin(1000);         // We have 1000 elements, evenly spaced.
//   while (clipper.Step())
//       for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
//           ImGui::Text("line number %d", i);
// Generally what happens is:
// - Clipper lets you process the first element (DisplayStart = 0, DisplayEnd = 1) regardless of it being visible or
// not.
// - User code submit one element.
// - Clipper can measure the height of the first element
// - Clipper calculate the actual range of elements to display based on the current clipping rectangle, position the
// cursor before the first visible element.
// - User code submit visible elements.
struct ImGuiListClipper
{
    int DisplayStart;
    int DisplayEnd;

    // [Internal]
    int ItemsCount;
    int StepNo;
    int ItemsFrozen;
    float ItemsHeight;
    float StartPosY;

    IMGUI_API ImGuiListClipper();
    IMGUI_API ~ImGuiListClipper();

    // items_count: Use INT_MAX if you don't know how many items you have (in which case the cursor won't be advanced in
    // the final step) items_height: Use -1.0f to be calculated automatically on first step. Otherwise pass in the
    // distance between your items, typically GetTextLineHeightWithSpacing() or GetFrameHeightWithSpacing().
    IMGUI_API void Begin(int items_count, float items_height = -1.0f);  // Automatically called by constructor if you
                                                                        // passed 'items_count' or by Step() in Step 1.
    IMGUI_API void End();   // Automatically called on the last call of Step() that returns false.
    IMGUI_API bool Step();  // Call until it returns false. The DisplayStart/DisplayEnd fields will be set and you can
                            // process/draw those items.

#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    inline ImGuiListClipper(int items_count, float items_height = -1.0f)
    {
        memset(this, 0, sizeof(*this));
        ItemsCount = -1;
        Begin(items_count, items_height);
    }  // [removed in 1.79]
#    endif
};

// Helpers macros to generate 32-bit encoded colors
#    ifdef IMGUI_USE_BGRA_PACKED_COLOR
#        define IM_COL32_R_SHIFT 16
#        define IM_COL32_G_SHIFT 8
#        define IM_COL32_B_SHIFT 0
#        define IM_COL32_A_SHIFT 24
#        define IM_COL32_A_MASK 0xFF000000
#    else
#        define IM_COL32_R_SHIFT 0
#        define IM_COL32_G_SHIFT 8
#        define IM_COL32_B_SHIFT 16
#        define IM_COL32_A_SHIFT 24
#        define IM_COL32_A_MASK 0xFF000000
#    endif
#    define IM_COL32(R, G, B, A)                                                                                  \
        (((ImU32)(A) << IM_COL32_A_SHIFT) | ((ImU32)(B) << IM_COL32_B_SHIFT) | ((ImU32)(G) << IM_COL32_G_SHIFT) | \
         ((ImU32)(R) << IM_COL32_R_SHIFT))
#    define IM_COL32_WHITE IM_COL32(255, 255, 255, 255)  // Opaque white = 0xFFFFFFFF
#    define IM_COL32_BLACK IM_COL32(0, 0, 0, 255)        // Opaque black
#    define IM_COL32_BLACK_TRANS IM_COL32(0, 0, 0, 0)    // Transparent black = 0x00000000

// Helper: ImColor() implicitly converts colors to either ImU32 (packed 4x1 byte) or ImVec4 (4x1 float)
// Prefer using IM_COL32() macros if you want a guaranteed compile-time ImU32 for usage with ImDrawList API.
// **Avoid storing ImColor! Store either u32 of ImVec4. This is not a full-featured color class. MAY OBSOLETE.
// **None of the ImGui API are using ImColor directly but you can use it as a convenience to pass colors in either ImU32
// or ImVec4 formats. Explicitly cast to ImU32 or ImVec4 if needed.
struct ImColor
{
    ImVec4 Value;

    ImColor() { Value.x = Value.y = Value.z = Value.w = 0.0f; }
    ImColor(int r, int g, int b, int a = 255)
    {
        float sc = 1.0f / 255.0f;
        Value.x  = (float)r * sc;
        Value.y  = (float)g * sc;
        Value.z  = (float)b * sc;
        Value.w  = (float)a * sc;
    }
    ImColor(ImU32 rgba)
    {
        float sc = 1.0f / 255.0f;
        Value.x  = (float)((rgba >> IM_COL32_R_SHIFT) & 0xFF) * sc;
        Value.y  = (float)((rgba >> IM_COL32_G_SHIFT) & 0xFF) * sc;
        Value.z  = (float)((rgba >> IM_COL32_B_SHIFT) & 0xFF) * sc;
        Value.w  = (float)((rgba >> IM_COL32_A_SHIFT) & 0xFF) * sc;
    }
    ImColor(float r, float g, float b, float a = 1.0f)
    {
        Value.x = r;
        Value.y = g;
        Value.z = b;
        Value.w = a;
    }
    ImColor(const ImVec4& col) { Value = col; }
    inline operator ImU32() const { return ImGui::ColorConvertFloat4ToU32(Value); }
    inline operator ImVec4() const { return Value; }

    // FIXME-OBSOLETE: May need to obsolete/cleanup those helpers.
    inline void SetHSV(float h, float s, float v, float a = 1.0f)
    {
        ImGui::ColorConvertHSVtoRGB(h, s, v, Value.x, Value.y, Value.z);
        Value.w = a;
    }
    static ImColor HSV(float h, float s, float v, float a = 1.0f)
    {
        float r, g, b;
        ImGui::ColorConvertHSVtoRGB(h, s, v, r, g, b);
        return ImColor(r, g, b, a);
    }
};

//-----------------------------------------------------------------------------
// [SECTION] Drawing API (ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListSplitter, ImDrawListFlags,
// ImDrawList, ImDrawData) Hold a series of drawing commands. The user provides a renderer for ImDrawData which
// essentially contains an array of ImDrawList.
//-----------------------------------------------------------------------------

// The maximum line width to bake anti-aliased textures for. Build atlas with ImFontAtlasFlags_NoBakedLines to disable
// baking.
#    ifndef IM_DRAWLIST_TEX_LINES_WIDTH_MAX
#        define IM_DRAWLIST_TEX_LINES_WIDTH_MAX (63)
#    endif

// ImDrawCallback: Draw callbacks for advanced uses [configurable type: override in imconfig.h]
// NB: You most likely do NOT need to use draw callbacks just to create your own widget or customized UI rendering,
// you can poke into the draw list for that! Draw callback may be useful for example to:
//  A) Change your GPU render state,
//  B) render a complex 3D scene inside a UI element without an intermediate texture/render target, etc.
// The expected behavior from your rendering function is 'if (cmd.UserCallback != NULL) { cmd.UserCallback(parent_list,
// cmd); } else { RenderTriangles() }' If you want to override the signature of ImDrawCallback, you can simply use e.g.
// '#define ImDrawCallback MyDrawCallback' (in imconfig.h) + update rendering backend accordingly.
#    ifndef ImDrawCallback
typedef void (*ImDrawCallback)(const ImDrawList* parent_list, const ImDrawCmd* cmd);
#    endif

// Special Draw callback value to request renderer backend to reset the graphics/render state.
// The renderer backend needs to handle this special value, otherwise it will crash trying to call a function at this
// address. This is useful for example if you submitted callbacks which you know have altered the render state and you
// want it to be restored. It is not done by default because they are many perfectly useful way of altering render state
// for imgui contents (e.g. changing shader/blending settings before an Image call).
#    define ImDrawCallback_ResetRenderState (ImDrawCallback)(-1)

// Typically, 1 command = 1 GPU draw call (unless command is a callback)
// - VtxOffset/IdxOffset: When 'io.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset' is enabled,
//   those fields allow us to render meshes larger than 64K vertices while keeping 16-bit indices.
//   Pre-1.71 backends will typically ignore the VtxOffset/IdxOffset fields.
// - The ClipRect/TextureId/VtxOffset fields must be contiguous as we memcmp() them together (this is asserted for).
struct ImDrawCmd
{
    ImVec4 ClipRect;  // 4*4  // Clipping rectangle (x1, y1, x2, y2). Subtract ImDrawData->DisplayPos to get clipping
                      // rectangle in "viewport" coordinates
    ImTextureID TextureId;   // 4-8  // User-provided texture ID. Set by user in ImfontAtlas::SetTexID() for fonts or
                             // passed to Image*() functions. Ignore if never using images or multiple fonts atlas.
    unsigned int VtxOffset;  // 4    // Start offset in vertex buffer. ImGuiBackendFlags_RendererHasVtxOffset: always 0,
                             // otherwise may be >0 to support meshes larger than 64K vertices with 16-bit indices.
    unsigned int IdxOffset;  // 4    // Start offset in index buffer. Always equal to sum of ElemCount drawn so far.
    unsigned int ElemCount;  // 4    // Number of indices (multiple of 3) to be rendered as triangles. Vertices are
                             // stored in the callee ImDrawList's vtx_buffer[] array, indices in idx_buffer[].
    ImDrawCallback UserCallback;  // 4-8  // If != NULL, call the function instead of rendering the vertices. clip_rect
                                  // and texture_id will be set normally.
    void* UserCallbackData;       // 4-8  // The draw callback code can access this.

    ImDrawCmd() { memset(this, 0, sizeof(*this)); }  // Also ensure our padding fields are zeroed

    // Since 1.83: returns ImTextureID associated with this draw call. Warning: DO NOT assume this is always same as
    // 'TextureId' (we will change this function for an upcoming feature)
    inline ImTextureID GetTexID() const { return TextureId; }
};

// Vertex index, default to 16-bit
// To allow large meshes with 16-bit indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle
// ImDrawCmd::VtxOffset in the renderer backend (recommended). To use 32-bit indices: override with '#define ImDrawIdx
// unsigned int' in imconfig.h.
#    ifndef ImDrawIdx
typedef unsigned short ImDrawIdx;
#    endif

// Vertex layout
#    ifndef IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT
struct ImDrawVert
{
    ImVec2 pos;
    ImVec2 uv;
    ImU32 col;
};
#    else
// You can override the vertex format layout by defining IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT in imconfig.h
// The code expect ImVec2 pos (8 bytes), ImVec2 uv (8 bytes), ImU32 col (4 bytes), but you can re-order them or add
// other fields as needed to simplify integration in your engine. The type has to be described within the macro (you can
// either declare the struct or use a typedef). This is because ImVec2/ImU32 are likely not declared a the time you'd
// want to set your type up. NOTE: IMGUI DOESN'T CLEAR THE STRUCTURE AND DOESN'T CALL A CONSTRUCTOR SO ANY CUSTOM FIELD
// WILL BE UNINITIALIZED. IF YOU ADD EXTRA FIELDS (SUCH AS A 'Z' COORDINATES) YOU WILL NEED TO CLEAR THEM DURING RENDER
// OR TO IGNORE THEM.
IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT;
#    endif

// [Internal] For use by ImDrawList
struct ImDrawCmdHeader
{
    ImVec4 ClipRect;
    ImTextureID TextureId;
    unsigned int VtxOffset;
};

// [Internal] For use by ImDrawListSplitter
struct ImDrawChannel
{
    ImVector<ImDrawCmd> _CmdBuffer;
    ImVector<ImDrawIdx> _IdxBuffer;
};

// Split/Merge functions are used to split the draw list into different layers which can be drawn into out of order.
// This is used by the Columns/Tables API, so items of each column can be batched together in a same draw call.
struct ImDrawListSplitter
{
    int _Current;                       // Current channel number (0)
    int _Count;                         // Number of active channels (1+)
    ImVector<ImDrawChannel> _Channels;  // Draw channels (not resized down so _Count might be < Channels.Size)

    inline ImDrawListSplitter() { memset(this, 0, sizeof(*this)); }
    inline ~ImDrawListSplitter() { ClearFreeMemory(); }
    inline void Clear()
    {
        _Current = 0;
        _Count   = 1;
    }  // Do not clear Channels[] so our allocations are reused next frame
    IMGUI_API void ClearFreeMemory();
    IMGUI_API void Split(ImDrawList* draw_list, int count);
    IMGUI_API void Merge(ImDrawList* draw_list);
    IMGUI_API void SetCurrentChannel(ImDrawList* draw_list, int channel_idx);
};

// Flags for ImDrawList functions
// (Legacy: bit 0 must always correspond to ImDrawFlags_Closed to be backward compatible with old API using a bool.
// Bits 1..3 must be unused)
enum ImDrawFlags_
{
    ImDrawFlags_None   = 0,
    ImDrawFlags_Closed = 1 << 0,  // PathStroke(), AddPolyline(): specify that shape should be closed (Important: this
                                  // is always == 1 for legacy reason)
    ImDrawFlags_RoundCornersTopLeft =
        1 << 4,  // AddRect(), AddRectFilled(), PathRect(): enable rounding top-left corner only (when rounding > 0.0f,
                 // we default to all corners). Was 0x01.
    ImDrawFlags_RoundCornersTopRight =
        1 << 5,  // AddRect(), AddRectFilled(), PathRect(): enable rounding top-right corner only (when rounding > 0.0f,
                 // we default to all corners). Was 0x02.
    ImDrawFlags_RoundCornersBottomLeft =
        1 << 6,  // AddRect(), AddRectFilled(), PathRect(): enable rounding bottom-left corner only (when rounding >
                 // 0.0f, we default to all corners). Was 0x04.
    ImDrawFlags_RoundCornersBottomRight =
        1 << 7,  // AddRect(), AddRectFilled(), PathRect(): enable rounding bottom-right corner only (when rounding >
                 // 0.0f, we default to all corners). Wax 0x08.
    ImDrawFlags_RoundCornersNone = 1 << 8,  // AddRect(), AddRectFilled(), PathRect(): disable rounding on all corners
                                            // (when rounding > 0.0f). This is NOT zero, NOT an implicit flag!
    ImDrawFlags_RoundCornersTop    = ImDrawFlags_RoundCornersTopLeft | ImDrawFlags_RoundCornersTopRight,
    ImDrawFlags_RoundCornersBottom = ImDrawFlags_RoundCornersBottomLeft | ImDrawFlags_RoundCornersBottomRight,
    ImDrawFlags_RoundCornersLeft   = ImDrawFlags_RoundCornersBottomLeft | ImDrawFlags_RoundCornersTopLeft,
    ImDrawFlags_RoundCornersRight  = ImDrawFlags_RoundCornersBottomRight | ImDrawFlags_RoundCornersTopRight,
    ImDrawFlags_RoundCornersAll    = ImDrawFlags_RoundCornersTopLeft | ImDrawFlags_RoundCornersTopRight |
                                  ImDrawFlags_RoundCornersBottomLeft | ImDrawFlags_RoundCornersBottomRight,
    ImDrawFlags_RoundCornersDefault_ =
        ImDrawFlags_RoundCornersAll,  // Default to ALL corners if none of the _RoundCornersXX flags are specified.
    ImDrawFlags_RoundCornersMask_ = ImDrawFlags_RoundCornersAll | ImDrawFlags_RoundCornersNone
};

// Flags for ImDrawList instance. Those are set automatically by ImGui:: functions from ImGuiIO settings, and generally
// not manipulated directly. It is however possible to temporarily alter flags between calls to ImDrawList:: functions.
enum ImDrawListFlags_
{
    ImDrawListFlags_None = 0,
    ImDrawListFlags_AntiAliasedLines =
        1 << 0,  // Enable anti-aliased lines/borders (*2 the number of triangles for 1.0f wide line or lines thin
                 // enough to be drawn using textures, otherwise *3 the number of triangles)
    ImDrawListFlags_AntiAliasedLinesUseTex = 1 << 1,  // Enable anti-aliased lines/borders using textures when possible.
                                                      // Require backend to render with bilinear filtering.
    ImDrawListFlags_AntiAliasedFill =
        1 << 2,  // Enable anti-aliased edge around filled shapes (rounded rectangles, circles).
    ImDrawListFlags_AllowVtxOffset = 1 << 3  // Can emit 'VtxOffset > 0' to allow large meshes. Set when
                                             // 'ImGuiBackendFlags_RendererHasVtxOffset' is enabled.
};

// Draw command list
// This is the low-level list of polygons that ImGui:: functions are filling. At the end of the frame,
// all command lists are passed to your ImGuiIO::RenderDrawListFn function for rendering.
// Each dear imgui window contains its own ImDrawList. You can use ImGui::GetWindowDrawList() to
// access the current window draw list and draw custom primitives.
// You can interleave normal ImGui:: calls and adding primitives to the current draw list.
// In single viewport mode, top-left is == GetMainViewport()->Pos (generally 0,0), bottom-right is ==
// GetMainViewport()->Pos+Size (generally io.DisplaySize). You are totally free to apply whatever transformation matrix
// to want to the data (depending on the use of the transformation you may want to apply it to ClipRect as well!)
// Important: Primitives are always added to the list and not culled (culling is done at higher-level by ImGui::
// functions), if you use this API a lot consider coarse culling your drawn objects.
struct ImDrawList
{
    // This is what you have to render
    ImVector<ImDrawCmd>
        CmdBuffer;  // Draw commands. Typically 1 command = 1 GPU draw call, unless the command is a callback.
    ImVector<ImDrawIdx> IdxBuffer;   // Index buffer. Each command consume ImDrawCmd::ElemCount of those
    ImVector<ImDrawVert> VtxBuffer;  // Vertex buffer.
    ImDrawListFlags Flags;           // Flags, you may poke into these to adjust anti-aliasing settings per-primitive.

    // [Internal, used while building lists]
    unsigned int _VtxCurrentIdx;  // [Internal] generally == VtxBuffer.Size unless we are past 64K vertices, in which
                                  // case this gets reset to 0.
    const ImDrawListSharedData* _Data;  // Pointer to shared draw data (you can use ImGui::GetDrawListSharedData() to
                                        // get the one from current ImGui context)
    const char* _OwnerName;             // Pointer to owner window's name for debugging
    ImDrawVert* _VtxWritePtr;  // [Internal] point within VtxBuffer.Data after each add command (to avoid using the
                               // ImVector<> operators too much)
    ImDrawIdx* _IdxWritePtr;   // [Internal] point within IdxBuffer.Data after each add command (to avoid using the
                               // ImVector<> operators too much)
    ImVector<ImVec4> _ClipRectStack;        // [Internal]
    ImVector<ImTextureID> _TextureIdStack;  // [Internal]
    ImVector<ImVec2> _Path;                 // [Internal] current path building
    ImDrawCmdHeader
        _CmdHeader;  // [Internal] template of active commands. Fields should match those of CmdBuffer.back().
    ImDrawListSplitter _Splitter;  // [Internal] for channels api (note: prefer using your own persistent instance of
                                   // ImDrawListSplitter!)
    float _FringeScale;  // [Internal] anti-alias fringe is scaled by this value, this helps to keep things sharp while
                         // zooming at vertex buffer content

    // If you want to create ImDrawList instances, pass them ImGui::GetDrawListSharedData() or create and use your own
    // ImDrawListSharedData (so you can use ImDrawList without ImGui)
    ImDrawList(const ImDrawListSharedData* shared_data)
    {
        memset(this, 0, sizeof(*this));
        _Data = shared_data;
    }

    ~ImDrawList() { _ClearFreeMemory(); }
    IMGUI_API void PushClipRect(ImVec2 clip_rect_min,
                                ImVec2 clip_rect_max,
                                bool intersect_with_current_clip_rect =
                                    false);  // Render-level scissoring. This is passed down to your render function but
                                             // not used for CPU-side coarse clipping. Prefer using higher-level
                                             // ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
    IMGUI_API void PushClipRectFullScreen();
    IMGUI_API void PopClipRect();
    IMGUI_API void PushTextureID(ImTextureID texture_id);
    IMGUI_API void PopTextureID();
    inline ImVec2 GetClipRectMin() const
    {
        const ImVec4& cr = _ClipRectStack.back();
        return ImVec2(cr.x, cr.y);
    }
    inline ImVec2 GetClipRectMax() const
    {
        const ImVec4& cr = _ClipRectStack.back();
        return ImVec2(cr.z, cr.w);
    }

    // Primitives
    // - For rectangular primitives, "p_min" and "p_max" represent the upper-left and lower-right corners.
    // - For circle primitives, use "num_segments == 0" to automatically calculate tessellation (preferred).
    //   In older versions (until Dear ImGui 1.77) the AddCircle functions defaulted to num_segments == 12.
    //   In future versions we will use textures to provide cheaper and higher-quality circles.
    //   Use AddNgon() and AddNgonFilled() functions if you need to guaranteed a specific number of sides.
    IMGUI_API void AddLine(const ImVec2& p1, const ImVec2& p2, ImU32 col, float thickness = 1.0f);
    IMGUI_API void AddRect(const ImVec2& p_min,
                           const ImVec2& p_max,
                           ImU32 col,
                           float rounding    = 0.0f,
                           ImDrawFlags flags = 0,
                           float thickness   = 1.0f);  // a: upper-left, b: lower-right (== upper-left + size)
    IMGUI_API void AddRectFilled(const ImVec2& p_min,
                                 const ImVec2& p_max,
                                 ImU32 col,
                                 float rounding    = 0.0f,
                                 ImDrawFlags flags = 0);  // a: upper-left, b: lower-right (== upper-left + size)
    IMGUI_API void AddRectFilledMultiColor(const ImVec2& p_min,
                                           const ImVec2& p_max,
                                           ImU32 col_upr_left,
                                           ImU32 col_upr_right,
                                           ImU32 col_bot_right,
                                           ImU32 col_bot_left);
    IMGUI_API void AddQuad(const ImVec2& p1,
                           const ImVec2& p2,
                           const ImVec2& p3,
                           const ImVec2& p4,
                           ImU32 col,
                           float thickness = 1.0f);
    IMGUI_API void AddQuadFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col);
    IMGUI_API void AddTriangle(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col, float thickness = 1.0f);
    IMGUI_API void AddTriangleFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col);
    IMGUI_API void AddCircle(const ImVec2& center,
                             float radius,
                             ImU32 col,
                             int num_segments = 0,
                             float thickness  = 1.0f);
    IMGUI_API void AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments = 0);
    IMGUI_API void AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness = 1.0f);
    IMGUI_API void AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments);
    IMGUI_API void AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL);
    IMGUI_API void AddText(const ImFont* font,
                           float font_size,
                           const ImVec2& pos,
                           ImU32 col,
                           const char* text_begin,
                           const char* text_end             = NULL,
                           float wrap_width                 = 0.0f,
                           const ImVec4* cpu_fine_clip_rect = NULL);
    IMGUI_API void AddPolyline(const ImVec2* points, int num_points, ImU32 col, ImDrawFlags flags, float thickness);
    IMGUI_API void AddConvexPolyFilled(
        const ImVec2* points,
        int num_points,
        ImU32 col);  // Note: Anti-aliased filling requires points to be in clockwise order.
    IMGUI_API void AddBezierCubic(const ImVec2& p1,
                                  const ImVec2& p2,
                                  const ImVec2& p3,
                                  const ImVec2& p4,
                                  ImU32 col,
                                  float thickness,
                                  int num_segments = 0);  // Cubic Bezier (4 control points)
    IMGUI_API void AddBezierQuadratic(const ImVec2& p1,
                                      const ImVec2& p2,
                                      const ImVec2& p3,
                                      ImU32 col,
                                      float thickness,
                                      int num_segments = 0);  // Quadratic Bezier (3 control points)

    // Image primitives
    // - Read FAQ to understand what ImTextureID is.
    // - "p_min" and "p_max" represent the upper-left and lower-right corners of the rectangle.
    // - "uv_min" and "uv_max" represent the normalized texture coordinates to use for those corners. Using (0,0)->(1,1)
    // texture coordinates will generally display the entire texture.
    IMGUI_API void AddImage(ImTextureID user_texture_id,
                            const ImVec2& p_min,
                            const ImVec2& p_max,
                            const ImVec2& uv_min = ImVec2(0, 0),
                            const ImVec2& uv_max = ImVec2(1, 1),
                            ImU32 col            = IM_COL32_WHITE);
    IMGUI_API void AddImageQuad(ImTextureID user_texture_id,
                                const ImVec2& p1,
                                const ImVec2& p2,
                                const ImVec2& p3,
                                const ImVec2& p4,
                                const ImVec2& uv1 = ImVec2(0, 0),
                                const ImVec2& uv2 = ImVec2(1, 0),
                                const ImVec2& uv3 = ImVec2(1, 1),
                                const ImVec2& uv4 = ImVec2(0, 1),
                                ImU32 col         = IM_COL32_WHITE);
    IMGUI_API void AddImageRounded(ImTextureID user_texture_id,
                                   const ImVec2& p_min,
                                   const ImVec2& p_max,
                                   const ImVec2& uv_min,
                                   const ImVec2& uv_max,
                                   ImU32 col,
                                   float rounding,
                                   ImDrawFlags flags = 0);

    // Stateful path API, add points then finish with PathFillConvex() or PathStroke()
    inline void PathClear() { _Path.Size = 0; }
    inline void PathLineTo(const ImVec2& pos) { _Path.push_back(pos); }
    inline void PathLineToMergeDuplicate(const ImVec2& pos)
    {
        if (_Path.Size == 0 || memcmp(&_Path.Data[_Path.Size - 1], &pos, 8) != 0)
            _Path.push_back(pos);
    }
    inline void PathFillConvex(ImU32 col)
    {
        AddConvexPolyFilled(_Path.Data, _Path.Size, col);
        _Path.Size = 0;
    }  // Note: Anti-aliased filling requires points to be in clockwise order.
    inline void PathStroke(ImU32 col, ImDrawFlags flags = 0, float thickness = 1.0f)
    {
        AddPolyline(_Path.Data, _Path.Size, col, flags, thickness);
        _Path.Size = 0;
    }
    IMGUI_API void PathArcTo(const ImVec2& center, float radius, float a_min, float a_max, int num_segments = 0);
    IMGUI_API void PathArcToFast(const ImVec2& center,
                                 float radius,
                                 int a_min_of_12,
                                 int a_max_of_12);  // Use precomputed angles for a 12 steps circle
    IMGUI_API void PathBezierCubicCurveTo(const ImVec2& p2,
                                          const ImVec2& p3,
                                          const ImVec2& p4,
                                          int num_segments = 0);  // Cubic Bezier (4 control points)
    IMGUI_API void PathBezierQuadraticCurveTo(const ImVec2& p2,
                                              const ImVec2& p3,
                                              int num_segments = 0);  // Quadratic Bezier (3 control points)
    IMGUI_API void PathRect(const ImVec2& rect_min,
                            const ImVec2& rect_max,
                            float rounding    = 0.0f,
                            ImDrawFlags flags = 0);

    // Advanced
    IMGUI_API void AddCallback(ImDrawCallback callback,
                               void* callback_data);  // Your rendering function must check for 'UserCallback' in
                                                      // ImDrawCmd and call the function instead of rendering triangles.
    IMGUI_API void
    AddDrawCmd();  // This is useful if you need to forcefully create a new draw call (to allow for dependent rendering
                   // / blending). Otherwise primitives are merged into the same draw-call as much as possible
    IMGUI_API ImDrawList* CloneOutput() const;  // Create a clone of the CmdBuffer/IdxBuffer/VtxBuffer.

    // Advanced: Channels
    // - Use to split render into layers. By switching channels to can render out-of-order (e.g. submit FG primitives
    // before BG primitives)
    // - Use to minimize draw calls (e.g. if going back-and-forth between multiple clipping rectangles, prefer to append
    // into separate channels then merge at the end)
    // - FIXME-OBSOLETE: This API shouldn't have been in ImDrawList in the first place!
    //   Prefer using your own persistent instance of ImDrawListSplitter as you can stack them.
    //   Using the ImDrawList::ChannelsXXXX you cannot stack a split over another.
    inline void ChannelsSplit(int count) { _Splitter.Split(this, count); }
    inline void ChannelsMerge() { _Splitter.Merge(this); }
    inline void ChannelsSetCurrent(int n) { _Splitter.SetCurrentChannel(this, n); }

    // Advanced: Primitives allocations
    // - We render triangles (three vertices)
    // - All primitives needs to be reserved via PrimReserve() beforehand.
    IMGUI_API void PrimReserve(int idx_count, int vtx_count);
    IMGUI_API void PrimUnreserve(int idx_count, int vtx_count);
    IMGUI_API void PrimRect(const ImVec2& a,
                            const ImVec2& b,
                            ImU32 col);  // Axis aligned rectangle (composed of two triangles)
    IMGUI_API void PrimRectUV(const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col);
    IMGUI_API void PrimQuadUV(const ImVec2& a,
                              const ImVec2& b,
                              const ImVec2& c,
                              const ImVec2& d,
                              const ImVec2& uv_a,
                              const ImVec2& uv_b,
                              const ImVec2& uv_c,
                              const ImVec2& uv_d,
                              ImU32 col);
    inline void PrimWriteVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col)
    {
        _VtxWritePtr->pos = pos;
        _VtxWritePtr->uv  = uv;
        _VtxWritePtr->col = col;
        _VtxWritePtr++;
        _VtxCurrentIdx++;
    }
    inline void PrimWriteIdx(ImDrawIdx idx)
    {
        *_IdxWritePtr = idx;
        _IdxWritePtr++;
    }
    inline void PrimVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col)
    {
        PrimWriteIdx((ImDrawIdx)_VtxCurrentIdx);
        PrimWriteVtx(pos, uv, col);
    }  // Write vertex with unique index

#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    inline void AddBezierCurve(const ImVec2& p1,
                               const ImVec2& p2,
                               const ImVec2& p3,
                               const ImVec2& p4,
                               ImU32 col,
                               float thickness,
                               int num_segments = 0)
    {
        AddBezierCubic(p1, p2, p3, p4, col, thickness, num_segments);
    }
    inline void PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments = 0)
    {
        PathBezierCubicCurveTo(p2, p3, p4, num_segments);
    }
#    endif

    // [Internal helpers]
    IMGUI_API void _ResetForNewFrame();
    IMGUI_API void _ClearFreeMemory();
    IMGUI_API void _PopUnusedDrawCmd();
    IMGUI_API void _TryMergeDrawCmds();
    IMGUI_API void _OnChangedClipRect();
    IMGUI_API void _OnChangedTextureID();
    IMGUI_API void _OnChangedVtxOffset();
    IMGUI_API int _CalcCircleAutoSegmentCount(float radius) const;
    IMGUI_API void _PathArcToFastEx(const ImVec2& center, float radius, int a_min_sample, int a_max_sample, int a_step);
    IMGUI_API void _PathArcToN(const ImVec2& center, float radius, float a_min, float a_max, int num_segments);
};

// All draw data to render a Dear ImGui frame
// (NB: the style and the naming convention here is a little inconsistent, we currently preserve them for backward
// compatibility purpose, as this is one of the oldest structure exposed by the library! Basically, ImDrawList ==
// CmdList)
struct ImDrawData
{
    bool Valid;             // Only valid after Render() is called and before the next NewFrame() is called.
    int CmdListsCount;      // Number of ImDrawList* to render
    int TotalIdxCount;      // For convenience, sum of all ImDrawList's IdxBuffer.Size
    int TotalVtxCount;      // For convenience, sum of all ImDrawList's VtxBuffer.Size
    ImDrawList** CmdLists;  // Array of ImDrawList* to render. The ImDrawList are owned by ImGuiContext and only pointed
                            // to from here.
    ImVec2 DisplayPos;   // Top-left position of the viewport to render (== top-left of the orthogonal projection matrix
                         // to use) (== GetMainViewport()->Pos for the main viewport, == (0.0) in most single-viewport
                         // applications)
    ImVec2 DisplaySize;  // Size of the viewport to render (== GetMainViewport()->Size for the main viewport, ==
                         // io.DisplaySize in most single-viewport applications)
    ImVec2 FramebufferScale;  // Amount of pixels for each unit of DisplaySize. Based on io.DisplayFramebufferScale.
                              // Generally (1,1) on normal display, (2,2) on OSX with Retina display.
    ImGuiViewport*
        OwnerViewport;  // Viewport carrying the ImDrawData instance, might be of use to the renderer (generally not).

    // Functions
    ImDrawData() { Clear(); }
    void Clear() { memset(this, 0, sizeof(*this)); }  // The ImDrawList are owned by ImGuiContext!
    IMGUI_API void DeIndexAllBuffers();  // Helper to convert all buffers from indexed to non-indexed, in case you
                                         // cannot render indexed. Note: this is slow and most likely a waste of
                                         // resources. Always prefer indexed rendering!
    IMGUI_API void ScaleClipRects(
        const ImVec2& fb_scale);  // Helper to scale the ClipRect field of each ImDrawCmd. Use if your final output
                                  // buffer is at a different scale than Dear ImGui expects, or if there is a difference
                                  // between your window resolution and framebuffer resolution.
};

//-----------------------------------------------------------------------------
// [SECTION] Font API (ImFontConfig, ImFontGlyph, ImFontAtlasFlags, ImFontAtlas, ImFontGlyphRangesBuilder, ImFont)
//-----------------------------------------------------------------------------

struct ImFontConfig
{
    void* FontData;             //          // TTF/OTF data
    int FontDataSize;           //          // TTF/OTF data size
    bool FontDataOwnedByAtlas;  // true     // TTF/OTF data ownership taken by the container ImFontAtlas (will delete
                                // memory itself).
    int FontNo;                 // 0        // Index of font within TTF/OTF file
    float SizePixels;  //          // Size in pixels for rasterizer (more or less maps to the resulting font height).
    int OversampleH;   // 3        // Rasterize at higher quality for sub-pixel positioning. Note the difference between
                       // 2 and 3 is minimal so you can reduce this to 2 to save memory. Read
                       // https://github.com/nothings/stb/blob/master/tests/oversample/README.md for details.
    int OversampleV;  // 1        // Rasterize at higher quality for sub-pixel positioning. This is not really useful as
                      // we don't use sub-pixel positions on the Y axis.
    bool PixelSnapH;  // false    // Align every glyph to pixel boundary. Useful e.g. if you are merging a non-pixel
                      // aligned font with the default font. If enabled, you can set OversampleH/V to 1.
    ImVec2
        GlyphExtraSpacing;  // 0, 0     // Extra spacing (in pixels) between glyphs. Only X axis is supported for now.
    ImVec2 GlyphOffset;     // 0, 0     // Offset all glyphs from this font input.
    const ImWchar*
        GlyphRanges;  // NULL     // Pointer to a user-provided list of Unicode range (2 value per range, values are
                      // inclusive, zero-terminated list). THE ARRAY DATA NEEDS TO PERSIST AS LONG AS THE FONT IS ALIVE.
    float GlyphMinAdvanceX;  // 0        // Minimum AdvanceX for glyphs, set Min to align font icons, set both Min/Max
                             // to enforce mono-space font
    float GlyphMaxAdvanceX;  // FLT_MAX  // Maximum AdvanceX for glyphs
    bool MergeMode;  // false    // Merge into previous ImFont, so you can combine multiple inputs font into one ImFont
                     // (e.g. ASCII font + icons + Japanese glyphs). You may want to use GlyphOffset.y when merge font
                     // of different heights.
    unsigned int FontBuilderFlags;  // 0        // Settings for custom font builder. THIS IS BUILDER IMPLEMENTATION
                                    // DEPENDENT. Leave as zero if unsure.
    float RasterizerMultiply;  // 1.0f     // Brighten (>1.0f) or darken (<1.0f) font output. Brightening small fonts
                               // may be a good workaround to make them more readable.
    ImWchar EllipsisChar;      // -1       // Explicitly specify unicode codepoint of ellipsis character. When fonts are
                               // being merged first specified ellipsis will be used.

    // [Internal]
    char Name[40];  // Name (strictly to ease debugging)
    ImFont* DstFont;

    IMGUI_API ImFontConfig();
};

// Hold rendering data for one glyph.
// (Note: some language parsers may fail to convert the 31+1 bitfield members, in this case maybe drop store a single
// u32 or we can rework this)
struct ImFontGlyph
{
    unsigned int Colored : 1;  // Flag to indicate glyph is colored and should generally ignore tinting (make it usable
                               // with no shift on little-endian as this is used in loops)
    unsigned int
        Visible : 1;  // Flag to indicate glyph has no visible pixels (e.g. space). Allow early out when rendering.
    unsigned int Codepoint : 30;  // 0x0000..0x10FFFF
    float AdvanceX;        // Distance to next character (= data from font + ImFontConfig::GlyphExtraSpacing.x baked in)
    float X0, Y0, X1, Y1;  // Glyph corners
    float U0, V0, U1, V1;  // Texture coordinates
};

// Helper to build glyph ranges from text/string data. Feed your application strings/characters to it then call
// BuildRanges(). This is essentially a tightly packed of vector of 64k booleans = 8KB storage.
struct ImFontGlyphRangesBuilder
{
    ImVector<ImU32> UsedChars;  // Store 1-bit per Unicode code point (0=unused, 1=used)

    ImFontGlyphRangesBuilder() { Clear(); }
    inline void Clear()
    {
        int size_in_bytes = (IM_UNICODE_CODEPOINT_MAX + 1) / 8;
        UsedChars.resize(size_in_bytes / (int)sizeof(ImU32));
        memset(UsedChars.Data, 0, (size_t)size_in_bytes);
    }
    inline bool GetBit(size_t n) const
    {
        int off    = (int)(n >> 5);
        ImU32 mask = 1u << (n & 31);
        return (UsedChars[off] & mask) != 0;
    }  // Get bit n in the array
    inline void SetBit(size_t n)
    {
        int off    = (int)(n >> 5);
        ImU32 mask = 1u << (n & 31);
        UsedChars[off] |= mask;
    }                                              // Set bit n in the array
    inline void AddChar(ImWchar c) { SetBit(c); }  // Add character
    IMGUI_API void AddText(const char* text,
                           const char* text_end = NULL);  // Add string (each character of the UTF-8 string are added)
    IMGUI_API void AddRanges(
        const ImWchar* ranges);  // Add ranges, e.g. builder.AddRanges(ImFontAtlas::GetGlyphRangesDefault()) to force
                                 // add all of ASCII/Latin+Ext
    IMGUI_API void BuildRanges(ImVector<ImWchar>* out_ranges);  // Output new ranges
};

// See ImFontAtlas::AddCustomRectXXX functions.
struct ImFontAtlasCustomRect
{
    unsigned short Width, Height;  // Input    // Desired rectangle dimension
    unsigned short X, Y;           // Output   // Packed position in Atlas
    unsigned int GlyphID;          // Input    // For custom font glyphs only (ID < 0x110000)
    float GlyphAdvanceX;           // Input    // For custom font glyphs only: glyph xadvance
    ImVec2 GlyphOffset;            // Input    // For custom font glyphs only: glyph display offset
    ImFont* Font;                  // Input    // For custom font glyphs only: target font
    ImFontAtlasCustomRect()
    {
        Width = Height = 0;
        X = Y         = 0xFFFF;
        GlyphID       = 0;
        GlyphAdvanceX = 0.0f;
        GlyphOffset   = ImVec2(0, 0);
        Font          = NULL;
    }
    bool IsPacked() const { return X != 0xFFFF; }
};

// Flags for ImFontAtlas build
enum ImFontAtlasFlags_
{
    ImFontAtlasFlags_None               = 0,
    ImFontAtlasFlags_NoPowerOfTwoHeight = 1 << 0,  // Don't round the height to next power of two
    ImFontAtlasFlags_NoMouseCursors =
        1 << 1,  // Don't build software mouse cursors into the atlas (save a little texture memory)
    ImFontAtlasFlags_NoBakedLines = 1 << 2  // Don't build thick line textures into the atlas (save a little texture
                                            // memory). The AntiAliasedLinesUseTex features uses them, otherwise they
                                            // will be rendered using polygons (more expensive for CPU/GPU).
};

// Load and rasterize multiple TTF/OTF fonts into a same texture. The font atlas will build a single texture holding:
//  - One or more fonts.
//  - Custom graphics data needed to render the shapes needed by Dear ImGui.
//  - Mouse cursor shapes for software cursor rendering (unless setting 'Flags |= ImFontAtlasFlags_NoMouseCursors' in
//  the font atlas).
// It is the user-code responsibility to setup/build the atlas, then upload the pixel data into a texture accessible by
// your graphics api.
//  - Optionally, call any of the AddFont*** functions. If you don't call any, the default font embedded in the code
//  will be loaded for you.
//  - Call GetTexDataAsAlpha8() or GetTexDataAsRGBA32() to build and retrieve pixels data.
//  - Upload the pixels data into a texture within your graphics system (see imgui_impl_xxxx.cpp examples)
//  - Call SetTexID(my_tex_id); and pass the pointer/identifier to your texture in a format natural to your graphics
//  API.
//    This value will be passed back to you during rendering to identify the texture. Read FAQ entry about ImTextureID
//    for more details.
// Common pitfalls:
// - If you pass a 'glyph_ranges' array to AddFont*** functions, you need to make sure that your array persist up until
// the
//   atlas is build (when calling GetTexData*** or Build()). We only copy the pointer, not the data.
// - Important: By default, AddFontFromMemoryTTF() takes ownership of the data. Even though we are not writing to it, we
// will free the pointer on destruction.
//   You can set font_cfg->FontDataOwnedByAtlas=false to keep ownership of your data and it won't be freed,
// - Even though many functions are suffixed with "TTF", OTF data is supported just as well.
// - This is an old API and it is currently awkward for those and and various other reasons! We will address them in the
// future!
struct ImFontAtlas
{
    IMGUI_API ImFontAtlas();
    IMGUI_API ~ImFontAtlas();
    IMGUI_API ImFont* AddFont(const ImFontConfig* font_cfg);
    IMGUI_API ImFont* AddFontDefault(const ImFontConfig* font_cfg = NULL);
    IMGUI_API ImFont* AddFontFromFileTTF(const char* filename,
                                         float size_pixels,
                                         const ImFontConfig* font_cfg = NULL,
                                         const ImWchar* glyph_ranges  = NULL);
    IMGUI_API ImFont* AddFontFromMemoryTTF(
        void* font_data,
        int font_size,
        float size_pixels,
        const ImFontConfig* font_cfg = NULL,
        const ImWchar* glyph_ranges =
            NULL);  // Note: Transfer ownership of 'ttf_data' to ImFontAtlas! Will be deleted after destruction of the
                    // atlas. Set font_cfg->FontDataOwnedByAtlas=false to keep ownership of your data and it won't be
                    // freed.
    IMGUI_API ImFont* AddFontFromMemoryCompressedTTF(
        const void* compressed_font_data,
        int compressed_font_size,
        float size_pixels,
        const ImFontConfig* font_cfg = NULL,
        const ImWchar* glyph_ranges =
            NULL);  // 'compressed_font_data' still owned by caller. Compress with binary_to_compressed_c.cpp.
    IMGUI_API ImFont* AddFontFromMemoryCompressedBase85TTF(
        const char* compressed_font_data_base85,
        float size_pixels,
        const ImFontConfig* font_cfg = NULL,
        const ImWchar* glyph_ranges  = NULL);  // 'compressed_font_data_base85' still owned by caller. Compress with
                                              // binary_to_compressed_c.cpp with -base85 parameter.
    IMGUI_API void ClearInputData();  // Clear input data (all ImFontConfig structures including sizes, TTF data, glyph
                                      // ranges, etc.) = all the data used to build the texture and fonts.
    IMGUI_API void ClearTexData();  // Clear output texture data (CPU side). Saves RAM once the texture has been copied
                                    // to graphics memory.
    IMGUI_API void ClearFonts();    // Clear output font data (glyphs storage, UV coordinates).
    IMGUI_API void Clear();         // Clear all input and output.

    // Build atlas, retrieve pixel data.
    // User is in charge of copying the pixels into graphics memory (e.g. create a texture with your engine). Then store
    // your texture handle with SetTexID(). The pitch is always = Width * BytesPerPixels (1 or 4) Building in RGBA32
    // format is provided for convenience and compatibility, but note that unless you manually manipulate or copy color
    // data into the texture (e.g. when using the AddCustomRect*** api), then the RGB pixels emitted will always be
    // white (~75% of memory/bandwidth waste.
    IMGUI_API bool Build();  // Build pixels data. This is called automatically for you by the GetTexData*** functions.
    IMGUI_API void GetTexDataAsAlpha8(unsigned char** out_pixels,
                                      int* out_width,
                                      int* out_height,
                                      int* out_bytes_per_pixel = NULL);  // 1 byte per-pixel
    IMGUI_API void GetTexDataAsRGBA32(unsigned char** out_pixels,
                                      int* out_width,
                                      int* out_height,
                                      int* out_bytes_per_pixel = NULL);  // 4 bytes-per-pixel
    bool IsBuilt() const
    {
        return Fonts.Size > 0 && TexReady;
    }  // Bit ambiguous: used to detect when user didn't built texture but effectively we should check TexID != 0 except
       // that would be backend dependent...
    void SetTexID(ImTextureID id) { TexID = id; }

    //-------------------------------------------
    // Glyph Ranges
    //-------------------------------------------

    // Helpers to retrieve list of common Unicode ranges (2 value per range, values are inclusive, zero-terminated list)
    // NB: Make sure that your string are UTF-8 and NOT in your local code page. In C++11, you can create UTF-8 string
    // literal using the u8"Hello world" syntax. See FAQ for details. NB: Consider using ImFontGlyphRangesBuilder to
    // build glyph ranges from textual data.
    IMGUI_API const ImWchar* GetGlyphRangesDefault();  // Basic Latin, Extended Latin
    IMGUI_API const ImWchar* GetGlyphRangesKorean();   // Default + Korean characters
    IMGUI_API const ImWchar*
    GetGlyphRangesJapanese();  // Default + Hiragana, Katakana, Half-Width, Selection of 2999 Ideographs
    IMGUI_API const ImWchar* GetGlyphRangesChineseFull();  // Default + Half-Width + Japanese Hiragana/Katakana + full
                                                           // set of about 21000 CJK Unified Ideographs
    IMGUI_API const ImWchar*
    GetGlyphRangesChineseSimplifiedCommon();  // Default + Half-Width + Japanese Hiragana/Katakana + set of 2500 CJK
                                              // Unified Ideographs for common simplified Chinese
    IMGUI_API const ImWchar* GetGlyphRangesCyrillic();    // Default + about 400 Cyrillic characters
    IMGUI_API const ImWchar* GetGlyphRangesThai();        // Default + Thai characters
    IMGUI_API const ImWchar* GetGlyphRangesVietnamese();  // Default + Vietnamese characters

    //-------------------------------------------
    // [BETA] Custom Rectangles/Glyphs API
    //-------------------------------------------

    // You can request arbitrary rectangles to be packed into the atlas, for your own purposes.
    // - After calling Build(), you can query the rectangle position and render your pixels.
    // - If you render colored output, set 'atlas->TexPixelsUseColors = true' as this may help some backends decide of
    // prefered texture format.
    // - You can also request your rectangles to be mapped as font glyph (given a font + Unicode point),
    //   so you can render e.g. custom colorful icons and use them as regular glyphs.
    // - Read docs/FONTS.md for more details about using colorful icons.
    // - Note: this API may be redesigned later in order to support multi-monitor varying DPI settings.
    IMGUI_API int AddCustomRectRegular(int width, int height);
    IMGUI_API int AddCustomRectFontGlyph(ImFont* font,
                                         ImWchar id,
                                         int width,
                                         int height,
                                         float advance_x,
                                         const ImVec2& offset = ImVec2(0, 0));
    ImFontAtlasCustomRect* GetCustomRectByIndex(int index)
    {
        IM_ASSERT(index >= 0);
        return &CustomRects[index];
    }

    // [Internal]
    IMGUI_API void CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max) const;
    IMGUI_API bool GetMouseCursorTexData(ImGuiMouseCursor cursor,
                                         ImVec2* out_offset,
                                         ImVec2* out_size,
                                         ImVec2 out_uv_border[2],
                                         ImVec2 out_uv_fill[2]);

    //-------------------------------------------
    // Members
    //-------------------------------------------

    ImFontAtlasFlags Flags;  // Build flags (see ImFontAtlasFlags_)
    ImTextureID TexID;  // User data to refer to the texture once it has been uploaded to user's graphic systems. It is
                        // passed back to you during rendering via the ImDrawCmd structure.
    int TexDesiredWidth;  // Texture width desired by user before Build(). Must be a power-of-two. If have many glyphs
                          // your graphics API have texture size restrictions you may want to increase texture width to
                          // decrease height.
    int TexGlyphPadding;  // Padding between glyphs within texture in pixels. Defaults to 1. If your rendering method
                          // doesn't rely on bilinear filtering you may set this to 0.
    bool Locked;          // Marked as Locked by ImGui::NewFrame() so attempt to modify the atlas will assert.

    // [Internal]
    // NB: Access texture data via GetTexData*() calls! Which will setup a default font for you.
    bool TexReady;            // Set when texture was built matching current font input
    bool TexPixelsUseColors;  // Tell whether our texture data is known to use colors (rather than just alpha channel),
                              // in order to help backend select a format.
    unsigned char*
        TexPixelsAlpha8;  // 1 component per pixel, each component is unsigned 8-bit. Total size = TexWidth * TexHeight
    unsigned int* TexPixelsRGBA32;  // 4 component per pixel, each component is unsigned 8-bit. Total size = TexWidth *
                                    // TexHeight * 4
    int TexWidth;                   // Texture width calculated during Build().
    int TexHeight;                  // Texture height calculated during Build().
    ImVec2 TexUvScale;              // = (1.0f/TexWidth, 1.0f/TexHeight)
    ImVec2 TexUvWhitePixel;         // Texture coordinates to a white pixel
    ImVector<ImFont*> Fonts;  // Hold all the fonts returned by AddFont*. Fonts[0] is the default font upon calling
                              // ImGui::NewFrame(), use ImGui::PushFont()/PopFont() to change the current font.
    ImVector<ImFontAtlasCustomRect> CustomRects;  // Rectangles for packing custom texture data into the atlas.
    ImVector<ImFontConfig> ConfigData;            // Configuration data
    ImVec4 TexUvLines[IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1];  // UVs for baked anti-aliased lines

    // [Internal] Font builder
    const ImFontBuilderIO* FontBuilderIO;  // Opaque interface to a font builder (default to stb_truetype, can be
                                           // changed to use FreeType by defining IMGUI_ENABLE_FREETYPE).
    unsigned int FontBuilderFlags;         // Shared flags (for all fonts) for custom font builder. THIS IS BUILD
                                    // IMPLEMENTATION DEPENDENT. Per-font override is also available in ImFontConfig.

    // [Internal] Packing data
    int PackIdMouseCursors;  // Custom texture rectangle ID for white pixel and mouse cursors
    int PackIdLines;         // Custom texture rectangle ID for baked anti-aliased lines

#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    typedef ImFontAtlasCustomRect CustomRect;  // OBSOLETED in 1.72+
    // typedef ImFontGlyphRangesBuilder GlyphRangesBuilder; // OBSOLETED in 1.67+
#    endif
};

// Font runtime data and rendering
// ImFontAtlas automatically loads a default embedded font for you when you call GetTexDataAsAlpha8() or
// GetTexDataAsRGBA32().
struct ImFont
{
    // Members: Hot ~20/24 bytes (for CalcTextSize)
    ImVector<float> IndexAdvanceX;  // 12-16 // out //            // Sparse. Glyphs->AdvanceX in a directly indexable
                                    // way (cache-friendly for CalcTextSize functions which only this this info, and are
                                    // often bottleneck in large UI).
    float FallbackAdvanceX;         // 4     // out // = FallbackGlyph->AdvanceX
    float FontSize;  // 4     // in  //            // Height of characters/line, set during loading (don't change after
                     // loading)

    // Members: Hot ~28/40 bytes (for CalcTextSize + render loop)
    ImVector<ImWchar> IndexLookup;     // 12-16 // out //            // Sparse. Index glyphs by Unicode code-point.
    ImVector<ImFontGlyph> Glyphs;      // 12-16 // out //            // All glyphs.
    const ImFontGlyph* FallbackGlyph;  // 4-8   // out // = FindGlyph(FontFallbackChar)

    // Members: Cold ~32/40 bytes
    ImFontAtlas* ContainerAtlas;     // 4-8   // out //            // What we has been loaded into
    const ImFontConfig* ConfigData;  // 4-8   // in  //            // Pointer within ContainerAtlas->ConfigData
    short ConfigDataCount;   // 2     // in  // ~ 1        // Number of ImFontConfig involved in creating this font.
                             // Bigger than 1 when merging multiple font sources into one ImFont.
    ImWchar FallbackChar;    // 2     // out // = FFFD/'?' // Character used if a glyph isn't found.
    ImWchar EllipsisChar;    // 2     // out // = '...'    // Character used for ellipsis rendering.
    ImWchar DotChar;         // 2     // out // = '.'      // Character used for ellipsis rendering (if a single '...'
                             // character isn't found)
    bool DirtyLookupTables;  // 1     // out //
    float Scale;  // 4     // in  // = 1.f      // Base font scale, multiplied by the per-window font scale which you
                  // can adjust with SetWindowFontScale()
    float Ascent,
        Descent;  // 4+4   // out //            // Ascent: distance from top to bottom of e.g. 'A' [0..FontSize]
    int MetricsTotalSurface;  // 4     // out //            // Total surface in pixels to get an idea of the font
                              // rasterization/texture cost (not exact, we approximate the cost of padding between
                              // glyphs)
    ImU8 Used4kPagesMap[(IM_UNICODE_CODEPOINT_MAX + 1) / 4096 /
                        8];  // 2 bytes if ImWchar=ImWchar16, 34 bytes if ImWchar==ImWchar32. Store 1-bit for each block
                             // of 4K codepoints that has one active glyph. This is mainly used to facilitate iterations
                             // across all used codepoints.

    // Methods
    IMGUI_API ImFont();
    IMGUI_API ~ImFont();
    IMGUI_API const ImFontGlyph* FindGlyph(ImWchar c) const;
    IMGUI_API const ImFontGlyph* FindGlyphNoFallback(ImWchar c) const;
    float GetCharAdvance(ImWchar c) const
    {
        return ((int)c < IndexAdvanceX.Size) ? IndexAdvanceX[(int)c] : FallbackAdvanceX;
    }
    bool IsLoaded() const { return ContainerAtlas != NULL; }
    const char* GetDebugName() const { return ConfigData ? ConfigData->Name : "<unknown>"; }

    // 'max_width' stops rendering after a certain width (could be turned into a 2d size). FLT_MAX to disable.
    // 'wrap_width' enable automatic word-wrapping across multiple lines to fit into given width. 0.0f to disable.
    IMGUI_API ImVec2 CalcTextSizeA(float size,
                                   float max_width,
                                   float wrap_width,
                                   const char* text_begin,
                                   const char* text_end   = NULL,
                                   const char** remaining = NULL) const;  // utf8
    IMGUI_API const char* CalcWordWrapPositionA(float scale,
                                                const char* text,
                                                const char* text_end,
                                                float wrap_width) const;
    IMGUI_API void RenderChar(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col, ImWchar c) const;
    IMGUI_API void RenderText(ImDrawList* draw_list,
                              float size,
                              ImVec2 pos,
                              ImU32 col,
                              const ImVec4& clip_rect,
                              const char* text_begin,
                              const char* text_end,
                              float wrap_width   = 0.0f,
                              bool cpu_fine_clip = false) const;

    // [Internal] Don't use!
    IMGUI_API void BuildLookupTable();
    IMGUI_API void ClearOutputData();
    IMGUI_API void GrowIndex(int new_size);
    IMGUI_API void AddGlyph(const ImFontConfig* src_cfg,
                            ImWchar c,
                            float x0,
                            float y0,
                            float x1,
                            float y1,
                            float u0,
                            float v0,
                            float u1,
                            float v1,
                            float advance_x);
    IMGUI_API void AddRemapChar(
        ImWchar dst,
        ImWchar src,
        bool overwrite_dst = true);  // Makes 'dst' character/glyph points to 'src' character/glyph. Currently needs to
                                     // be called AFTER fonts have been built.
    IMGUI_API void SetGlyphVisible(ImWchar c, bool visible);
    IMGUI_API bool IsGlyphRangeUnused(unsigned int c_begin, unsigned int c_last);
};

//-----------------------------------------------------------------------------
// [SECTION] Viewports
//-----------------------------------------------------------------------------

// Flags stored in ImGuiViewport::Flags, giving indications to the platform backends.
enum ImGuiViewportFlags_
{
    ImGuiViewportFlags_None              = 0,
    ImGuiViewportFlags_IsPlatformWindow  = 1 << 0,  // Represent a Platform Window
    ImGuiViewportFlags_IsPlatformMonitor = 1 << 1,  // Represent a Platform Monitor (unused yet)
    ImGuiViewportFlags_OwnedByApp =
        1 << 2,  // Platform Window: is created/managed by the application (rather than a dear imgui backend)
    ImGuiViewportFlags_NoDecoration =
        1 << 3,  // Platform Window: Disable platform decorations: title bar, borders, etc. (generally set all windows,
                 // but if ImGuiConfigFlags_ViewportsDecoration is set we only set this on popups/tooltips)
    ImGuiViewportFlags_NoTaskBarIcon =
        1 << 4,  // Platform Window: Disable platform task bar icon (generally set on popups/tooltips, or all windows if
                 // ImGuiConfigFlags_ViewportsNoTaskBarIcon is set)
    ImGuiViewportFlags_NoFocusOnAppearing = 1 << 5,  // Platform Window: Don't take focus when created.
    ImGuiViewportFlags_NoFocusOnClick     = 1 << 6,  // Platform Window: Don't take focus when clicked on.
    ImGuiViewportFlags_NoInputs =
        1 << 7,  // Platform Window: Make mouse pass through so we can drag this window while peaking behind it.
    ImGuiViewportFlags_NoRendererClear = 1 << 8,  // Platform Window: Renderer doesn't need to clear the framebuffer
                                                  // ahead (because we will fill it entirely).
    ImGuiViewportFlags_TopMost = 1 << 9,          // Platform Window: Display on top (for tooltips only).
    ImGuiViewportFlags_Minimized =
        1 << 10,  // Platform Window: Window is minimized, can skip render. When minimized we tend to avoid using the
                  // viewport pos/size for clipping window or testing if they are contained in the viewport.
    ImGuiViewportFlags_NoAutoMerge =
        1 << 11,  // Platform Window: Avoid merging this window into another host window. This can only be set via
                  // ImGuiWindowClass viewport flags override (because we need to now ahead if we are going to create a
                  // viewport in the first place!).
    ImGuiViewportFlags_CanHostOtherWindows = 1 << 12  // Main viewport: can host multiple imgui windows (secondary
                                                      // viewports are associated to a single window).
};

// - Currently represents the Platform Window created by the application which is hosting our Dear ImGui windows.
// - With multi-viewport enabled, we extend this concept to have multiple active viewports.
// - In the future we will extend this concept further to also represent Platform Monitor and support a "no main
// platform window" operation mode.
// - About Main Area vs Work Area:
//   - Main Area = entire viewport.
//   - Work Area = entire viewport minus sections used by main menu bars (for platform windows), or by task bar (for
//   platform monitor).
//   - Windows are generally trying to stay within the Work Area of their host viewport.
struct ImGuiViewport
{
    ImGuiID ID;                // Unique identifier for the viewport
    ImGuiViewportFlags Flags;  // See ImGuiViewportFlags_
    ImVec2 Pos;       // Main Area: Position of the viewport (Dear ImGui coordinates are the same as OS desktop/native
                      // coordinates)
    ImVec2 Size;      // Main Area: Size of the viewport.
    ImVec2 WorkPos;   // Work Area: Position of the viewport minus task bars, menus bars, status bars (>= Pos)
    ImVec2 WorkSize;  // Work Area: Size of the viewport minus task bars, menu bars, status bars (<= Size)
    float DpiScale;   // 1.0f = 96 DPI = No extra scale.
    ImGuiID ParentViewportId;  // (Advanced) 0: no parent. Instruct the platform backend to setup a parent/child
                               // relationship between platform windows.
    ImDrawData* DrawData;      // The ImDrawData corresponding to this viewport. Valid after Render() and until the next
                               // call to NewFrame().

    // Our design separate the Renderer and Platform backends to facilitate combining default backends with each others.
    // When our create your own backend for a custom engine, it is possible that both Renderer and Platform will be
    // handled by the same system and you may not need to use all the UserData/Handle fields. The library never uses
    // those fields, they are merely storage to facilitate backend implementation.
    void* RendererUserData;  // void* to hold custom data structure for the renderer (e.g. swap chain, framebuffers
                             // etc.). generally set by your Renderer_CreateWindow function.
    void* PlatformUserData;  // void* to hold custom data structure for the OS / platform (e.g. windowing info, render
                             // context). generally set by your Platform_CreateWindow function.
    void* PlatformHandle;    // void* for FindViewportByPlatformHandle(). (e.g. suggested to use natural platform handle
                             // such as HWND, GLFWWindow*, SDL_Window*)
    void* PlatformHandleRaw;   // void* to hold lower-level, platform-native window handle (e.g. the HWND) when using an
                               // abstraction layer like GLFW or SDL (where PlatformHandle would be a SDL_Window*)
    bool PlatformRequestMove;  // Platform window requested move (e.g. window was moved by the OS / host window manager,
                               // authoritative position will be OS window position)
    bool PlatformRequestResize;  // Platform window requested resize (e.g. window was resized by the OS / host window
                                 // manager, authoritative size will be OS window size)
    bool PlatformRequestClose;   // Platform window requested closure (e.g. window was moved by the OS / host window
                                 // manager, e.g. pressing ALT-F4)

    ImGuiViewport() { memset(this, 0, sizeof(*this)); }
    ~ImGuiViewport() { IM_ASSERT(PlatformUserData == NULL && RendererUserData == NULL); }

    // Helpers
    ImVec2 GetCenter() const { return ImVec2(Pos.x + Size.x * 0.5f, Pos.y + Size.y * 0.5f); }
    ImVec2 GetWorkCenter() const { return ImVec2(WorkPos.x + WorkSize.x * 0.5f, WorkPos.y + WorkSize.y * 0.5f); }
};

//-----------------------------------------------------------------------------
// [SECTION] Platform interface for multi-viewport support
//-----------------------------------------------------------------------------
// [BETA] (Optional) This is completely optional, for advanced users!
// If you are new to Dear ImGui and trying to integrate it into your engine, you can probably ignore this for now.
//
// This feature allows you to seamlessly drag Dear ImGui windows outside of your application viewport.
// This is achieved by creating new Platform/OS windows on the fly, and rendering into them.
// Dear ImGui manages the viewport structures, and the backend create and maintain one Platform/OS window for each of
// those viewports.
//
// See Glossary https://github.com/ocornut/imgui/wiki/Glossary for details about some of the terminology.
// See Thread https://github.com/ocornut/imgui/issues/1542 for gifs, news and questions about this evolving feature.
//
// About the coordinates system:
// - When multi-viewports are enabled, all Dear ImGui coordinates become absolute coordinates (same as OS coordinates!)
// - So e.g. ImGui::SetNextWindowPos(ImVec2(0,0)) will position a window relative to your primary monitor!
// - If you want to position windows relative to your main application viewport, use ImGui::GetMainViewport()->Pos as a
// base position.
//
// Steps to use multi-viewports in your application, when using a default backend from the examples/ folder:
// - Application:  Enable feature with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
// - Backend:      The backend initialization will setup all necessary ImGuiPlatformIO's functions and update monitors
// info every frame.
// - Application:  In your main loop, call ImGui::UpdatePlatformWindows(), ImGui::RenderPlatformWindowsDefault() after
// EndFrame() or Render().
// - Application:  Fix absolute coordinates used in ImGui::SetWindowPos() or ImGui::SetNextWindowPos() calls.
//
// Steps to use multi-viewports in your application, when using a custom backend:
// - Important:    THIS IS NOT EASY TO DO and comes with many subtleties not described here!
//                 It's also an experimental feature, so some of the requirements may evolve.
//                 Consider using default backends if you can. Either way, carefully follow and refer to examples/
//                 backends for details.
// - Application:  Enable feature with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'.
// - Backend:      Hook ImGuiPlatformIO's Platform_* and Renderer_* callbacks (see below).
//                 Set 'io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports' and 'io.BackendFlags |=
//                 ImGuiBackendFlags_PlatformHasViewports'. Update ImGuiPlatformIO's Monitors list every frame. Update
//                 MousePos every frame, in absolute coordinates.
// - Application:  In your main loop, call ImGui::UpdatePlatformWindows(), ImGui::RenderPlatformWindowsDefault() after
// EndFrame() or Render().
//                 You may skip calling RenderPlatformWindowsDefault() if its API is not convenient for your needs. Read
//                 comments below.
// - Application:  Fix absolute coordinates used in ImGui::SetWindowPos() or ImGui::SetNextWindowPos() calls.
//
// About ImGui::RenderPlatformWindowsDefault():
// - This function is a mostly a _helper_ for the common-most cases, and to facilitate using default backends.
// - You can check its simple source code to understand what it does.
//   It basically iterates secondary viewports and call 4 functions that are setup in ImGuiPlatformIO, if available:
//     Platform_RenderWindow(), Renderer_RenderWindow(), Platform_SwapBuffers(), Renderer_SwapBuffers()
//   Those functions pointers exists only for the benefit of RenderPlatformWindowsDefault().
// - If you have very specific rendering needs (e.g. flipping multiple swap-chain simultaneously, unusual sync/threading
// issues, etc.),
//   you may be tempted to ignore RenderPlatformWindowsDefault() and write customized code to perform your renderingg.
//   You may decide to setup the platform_io's *RenderWindow and *SwapBuffers pointers and call your functions through
//   those pointers, or you may decide to never setup those pointers and call your code directly. They are a
//   convenience, not an obligatory interface.
//-----------------------------------------------------------------------------

// (Optional) Access via ImGui::GetPlatformIO()
struct ImGuiPlatformIO
{
    //------------------------------------------------------------------
    // Input - Backend interface/functions + Monitor List
    //------------------------------------------------------------------

    // (Optional) Platform functions (e.g. Win32, GLFW, SDL2)
    // For reference, the second column shows which function are generally calling the Platform Functions:
    //   N = ImGui::NewFrame()                        ~ beginning of the dear imgui frame: read info from platform/OS
    //   windows (latest size/position) F = ImGui::Begin(), ImGui::EndFrame()        ~ during the dear imgui frame U =
    //   ImGui::UpdatePlatformWindows()           ~ after the dear imgui frame: create and update all platform/OS
    //   windows R = ImGui::RenderPlatformWindowsDefault()    ~ render D = ImGui::DestroyPlatformWindows()          ~
    //   shutdown
    // The general idea is that NewFrame() we will read the current Platform/OS state, and UpdatePlatformWindows() will
    // write to it.
    //
    // The functions are designed so we can mix and match 2 imgui_impl_xxxx files, one for the Platform (~window/input
    // handling), one for Renderer. Custom engine backends will often provide both Platform and Renderer interfaces and
    // so may not need to use all functions. Platform functions are typically called before their Renderer counterpart,
    // apart from Destroy which are called the other way.

    // Platform function --------------------------------------------------- Called by -----
    void (*Platform_CreateWindow)(
        ImGuiViewport* vp);  // . . U . .  // Create a new platform window for the given viewport
    void (*Platform_DestroyWindow)(ImGuiViewport* vp);  // N . U . D  //
    void (*Platform_ShowWindow)(
        ImGuiViewport* vp);  // . . U . .  // Newly created windows are initially hidden so SetWindowPos/Size/Title can
                             // be called on them before showing the window
    void (*Platform_SetWindowPos)(
        ImGuiViewport* vp,
        ImVec2 pos);  // . . U . .  // Set platform window position (given the upper-left corner of client area)
    ImVec2 (*Platform_GetWindowPos)(ImGuiViewport* vp);  // N . . . .  //
    void (*Platform_SetWindowSize)(ImGuiViewport* vp,
                                   ImVec2 size);  // . . U . .  // Set platform window client area size (ignoring OS
                                                  // decorations such as OS title bar etc.)
    ImVec2 (*Platform_GetWindowSize)(ImGuiViewport* vp);  // N . . . .  // Get platform window client area size
    void (*Platform_SetWindowFocus)(ImGuiViewport* vp);   // N . . . .  // Move window to front and set input focus
    bool (*Platform_GetWindowFocus)(ImGuiViewport* vp);   // . . U . .  //
    bool (*Platform_GetWindowMinimized)(
        ImGuiViewport* vp);  // N . . . .  // Get platform window minimized state. When minimized, we generally won't
                             // attempt to get/set size and contents will be culled more easily
    void (*Platform_SetWindowTitle)(
        ImGuiViewport* vp,
        const char* str);  // . . U . .  // Set platform window title (given an UTF-8 string)
    void (*Platform_SetWindowAlpha)(
        ImGuiViewport* vp,
        float alpha);  // . . U . .  // (Optional) Setup global transparency (not per-pixel transparency)
    void (*Platform_UpdateWindow)(
        ImGuiViewport* vp);  // . . U . .  // (Optional) Called by UpdatePlatformWindows(). Optional hook to allow the
                             // platform backend from doing general book-keeping every frame.
    void (*Platform_RenderWindow)(
        ImGuiViewport* vp,
        void* render_arg);  // . . . R .  // (Optional) Main rendering (platform side! This is often unused, or just
                            // setting a "current" context for OpenGL bindings). 'render_arg' is the value passed to
                            // RenderPlatformWindowsDefault().
    void (*Platform_SwapBuffers)(
        ImGuiViewport* vp,
        void* render_arg);  // . . . R .  // (Optional) Call Present/SwapBuffers (platform side! This is often unused!).
                            // 'render_arg' is the value passed to RenderPlatformWindowsDefault().
    float (*Platform_GetWindowDpiScale)(ImGuiViewport* vp);  // N . . . .  // (Optional) [BETA] FIXME-DPI: DPI handling:
                                                             // Return DPI scale for this viewport. 1.0f = 96 DPI.
    void (*Platform_OnChangedViewport)(
        ImGuiViewport*
            vp);  // . F . . .  // (Optional) [BETA] FIXME-DPI: DPI handling: Called during Begin() every time the
                  // viewport we are outputting into changes, so backend has a chance to swap fonts to adjust style.
    void (*Platform_SetImeInputPos)(
        ImGuiViewport* vp,
        ImVec2 pos);  // . F . . .  // (Optional) Set IME (Input Method Editor, e.g. for Asian languages) input
                      // position, so text preview appears over the imgui input box. FIXME: The call timing of this is
                      // inconsistent because we want to support without multi-viewports.
    int (*Platform_CreateVkSurface)(
        ImGuiViewport* vp,
        ImU64 vk_inst,
        const void* vk_allocators,
        ImU64* out_vk_surface);  // (Optional) For a Vulkan Renderer to call into Platform code (since the surface
                                 // creation needs to tie them both).

    // (Optional) Renderer functions (e.g. DirectX, OpenGL, Vulkan)
    void (*Renderer_CreateWindow)(
        ImGuiViewport* vp);  // . . U . .  // Create swap chain, frame buffers etc. (called after Platform_CreateWindow)
    void (*Renderer_DestroyWindow)(ImGuiViewport* vp);  // N . U . D  // Destroy swap chain, frame buffers etc. (called
                                                        // before Platform_DestroyWindow)
    void (*Renderer_SetWindowSize)(
        ImGuiViewport* vp,
        ImVec2 size);  // . . U . .  // Resize swap chain, frame buffers etc. (called after Platform_SetWindowSize)
    void (*Renderer_RenderWindow)(
        ImGuiViewport* vp,
        void* render_arg);  // . . . R .  // (Optional) Clear framebuffer, setup render target, then render the
                            // viewport->DrawData. 'render_arg' is the value passed to RenderPlatformWindowsDefault().
    void (*Renderer_SwapBuffers)(ImGuiViewport* vp,
                                 void* render_arg);  // . . . R .  // (Optional) Call Present/SwapBuffers. 'render_arg'
                                                     // is the value passed to RenderPlatformWindowsDefault().

    // (Optional) Monitor list
    // - Updated by: app/backend. Update every frame to dynamically support changing monitor or DPI configuration.
    // - Used by: dear imgui to query DPI info, clamp popups/tooltips within same monitor and not have them straddle
    // monitors.
    ImVector<ImGuiPlatformMonitor> Monitors;

    //------------------------------------------------------------------
    // Output - List of viewports to render into platform windows
    //------------------------------------------------------------------

    // Viewports list (the list is updated by calling ImGui::EndFrame or ImGui::Render)
    // (in the future we will attempt to organize this feature to remove the need for a "main viewport")
    ImVector<ImGuiViewport*> Viewports;                    // Main viewports, followed by all secondary viewports.
    ImGuiPlatformIO() { memset(this, 0, sizeof(*this)); }  // Zero clear
};

// (Optional) This is required when enabling multi-viewport. Represent the bounds of each connected monitor/display and
// their DPI. We use this information for multiple DPI support + clamping the position of popups and tooltips so they
// don't straddle multiple monitors.
struct ImGuiPlatformMonitor
{
    ImVec2 MainPos,
        MainSize;  // Coordinates of the area displayed on this monitor (Min = upper left, Max = bottom right)
    ImVec2 WorkPos,
        WorkSize;    // Coordinates without task bars / side bars / menu bars. Used to avoid positioning popups/tooltips
                     // inside this region. If you don't have this info, please copy the value for MainPos/MainSize.
    float DpiScale;  // 1.0f = 96 DPI
    ImGuiPlatformMonitor()
    {
        MainPos = MainSize = WorkPos = WorkSize = ImVec2(0, 0);
        DpiScale                                = 1.0f;
    }
};

//-----------------------------------------------------------------------------
// [SECTION] Obsolete functions and types
// (Will be removed! Read 'API BREAKING CHANGES' section in imgui.cpp for details)
// Please keep your copy of dear imgui up to date! Occasionally set '#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS' in
// imconfig.h to stay ahead.
//-----------------------------------------------------------------------------

#    ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
namespace ImGui
{
// OBSOLETED in 1.81 (from February 2021)
IMGUI_API bool ListBoxHeader(
    const char* label,
    int items_count,
    int height_in_items = -1);  // Helper to calculate size from items_count and height_in_items
static inline bool ListBoxHeader(const char* label, const ImVec2& size = ImVec2(0, 0))
{
    return BeginListBox(label, size);
}
static inline void ListBoxFooter()
{
    EndListBox();
}
// OBSOLETED in 1.79 (from August 2020)
static inline void OpenPopupContextItem(const char* str_id = NULL, ImGuiMouseButton mb = 1)
{
    OpenPopupOnItemClick(str_id, mb);
}  // Bool return value removed. Use IsWindowAppearing() in BeginPopup() instead. Renamed in 1.77, renamed back in 1.79.
   // Sorry!
// OBSOLETED in 1.78 (from June 2020)
// Old drag/sliders functions that took a 'float power = 1.0' argument instead of flags.
// For shared code, you can version check at compile-time with `#if IMGUI_VERSION_NUM >= 17704`.
IMGUI_API bool DragScalar(const char* label,
                          ImGuiDataType data_type,
                          void* p_data,
                          float v_speed,
                          const void* p_min,
                          const void* p_max,
                          const char* format,
                          float power);
IMGUI_API bool DragScalarN(const char* label,
                           ImGuiDataType data_type,
                           void* p_data,
                           int components,
                           float v_speed,
                           const void* p_min,
                           const void* p_max,
                           const char* format,
                           float power);
static inline bool
DragFloat(const char* label, float* v, float v_speed, float v_min, float v_max, const char* format, float power)
{
    return DragScalar(label, ImGuiDataType_Float, v, v_speed, &v_min, &v_max, format, power);
}
static inline bool
DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* format, float power)
{
    return DragScalarN(label, ImGuiDataType_Float, v, 2, v_speed, &v_min, &v_max, format, power);
}
static inline bool
DragFloat3(const char* label, float v[3], float v_speed, float v_min, float v_max, const char* format, float power)
{
    return DragScalarN(label, ImGuiDataType_Float, v, 3, v_speed, &v_min, &v_max, format, power);
}
static inline bool
DragFloat4(const char* label, float v[4], float v_speed, float v_min, float v_max, const char* format, float power)
{
    return DragScalarN(label, ImGuiDataType_Float, v, 4, v_speed, &v_min, &v_max, format, power);
}
IMGUI_API bool SliderScalar(const char* label,
                            ImGuiDataType data_type,
                            void* p_data,
                            const void* p_min,
                            const void* p_max,
                            const char* format,
                            float power);
IMGUI_API bool SliderScalarN(const char* label,
                             ImGuiDataType data_type,
                             void* p_data,
                             int components,
                             const void* p_min,
                             const void* p_max,
                             const char* format,
                             float power);
static inline bool SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
{
    return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
}
static inline bool SliderFloat2(const char* label,
                                float v[2],
                                float v_min,
                                float v_max,
                                const char* format,
                                float power)
{
    return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
}
static inline bool SliderFloat3(const char* label,
                                float v[3],
                                float v_min,
                                float v_max,
                                const char* format,
                                float power)
{
    return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
}
static inline bool SliderFloat4(const char* label,
                                float v[4],
                                float v_min,
                                float v_max,
                                const char* format,
                                float power)
{
    return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
}
// OBSOLETED in 1.77 (from June 2020)
static inline bool BeginPopupContextWindow(const char* str_id, ImGuiMouseButton mb, bool over_items)
{
    return BeginPopupContextWindow(str_id, mb | (over_items ? 0 : ImGuiPopupFlags_NoOpenOverItems));
}
// OBSOLETED in 1.72 (from April 2019)
static inline void TreeAdvanceToLabelPos()
{
    SetCursorPosX(GetCursorPosX() + GetTreeNodeToLabelSpacing());
}
// OBSOLETED in 1.71 (from June 2019)
static inline void SetNextTreeNodeOpen(bool open, ImGuiCond cond = 0)
{
    SetNextItemOpen(open, cond);
}
// OBSOLETED in 1.70 (from May 2019)
static inline float GetContentRegionAvailWidth()
{
    return GetContentRegionAvail().x;
}

// Some of the older obsolete names along with their replacement (commented out so they are not reported in IDE)
// static inline ImDrawList* GetOverlayDrawList()            { return GetForegroundDrawList(); } // OBSOLETED in 1.69
// (from Mar 2019) static inline void  SetScrollHere(float ratio = 0.5f)     { SetScrollHereY(ratio); } // OBSOLETED
// in 1.66 (from Nov 2018) static inline bool  IsItemDeactivatedAfterChange()        { return
// IsItemDeactivatedAfterEdit(); }                    // OBSOLETED in 1.63 (from Aug 2018) static inline bool
// IsAnyWindowFocused()                  { return IsWindowFocused(ImGuiFocusedFlags_AnyWindow); }    // OBSOLETED
// in 1.60 (from Apr 2018) static inline bool  IsAnyWindowHovered()                  { return
// IsWindowHovered(ImGuiHoveredFlags_AnyWindow); }    // OBSOLETED in 1.60 (between Dec 2017 and Apr 2018) static inline
// void  ShowTestWindow()                      { return ShowDemoWindow(); }                                // OBSOLETED
// in 1.53 (between Oct 2017 and Dec 2017) static inline bool  IsRootWindowFocused()                 { return
// IsWindowFocused(ImGuiFocusedFlags_RootWindow); }   // OBSOLETED in 1.53 (between Oct 2017 and Dec 2017) static inline
// bool  IsRootWindowOrAnyChildFocused()       { return IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows); } //
// OBSOLETED in 1.53 (between Oct 2017 and Dec 2017) static inline void  SetNextWindowContentWidth(float w)    {
// SetNextWindowContentSize(ImVec2(w, 0.0f)); }              // OBSOLETED in 1.53 (between Oct 2017 and Dec 2017) static
// inline float GetItemsLineHeightWithSpacing()       { return GetFrameHeightWithSpacing(); }                     //
// OBSOLETED in 1.53 (between Oct 2017 and Dec 2017)
}  // namespace ImGui

// OBSOLETED in 1.82 (from Mars 2021): flags for AddRect(), AddRectFilled(), AddImageRounded(), PathRect()
typedef ImDrawFlags ImDrawCornerFlags;
enum ImDrawCornerFlags_
{
    ImDrawCornerFlags_None =
        ImDrawFlags_RoundCornersNone,  // Was == 0 prior to 1.82, this is now == ImDrawFlags_RoundCornersNone which is
                                       // != 0 and not implicit
    ImDrawCornerFlags_TopLeft =
        ImDrawFlags_RoundCornersTopLeft,  // Was == 0x01 (1 << 0) prior to 1.82. Order matches
                                          // ImDrawFlags_NoRoundCorner* flag (we exploit this internally).
    ImDrawCornerFlags_TopRight = ImDrawFlags_RoundCornersTopRight,     // Was == 0x02 (1 << 1) prior to 1.82.
    ImDrawCornerFlags_BotLeft  = ImDrawFlags_RoundCornersBottomLeft,   // Was == 0x04 (1 << 2) prior to 1.82.
    ImDrawCornerFlags_BotRight = ImDrawFlags_RoundCornersBottomRight,  // Was == 0x08 (1 << 3) prior to 1.82.
    ImDrawCornerFlags_All      = ImDrawFlags_RoundCornersAll,          // Was == 0x0F prior to 1.82
    ImDrawCornerFlags_Top      = ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_TopRight,
    ImDrawCornerFlags_Bot      = ImDrawCornerFlags_BotLeft | ImDrawCornerFlags_BotRight,
    ImDrawCornerFlags_Left     = ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_BotLeft,
    ImDrawCornerFlags_Right    = ImDrawCornerFlags_TopRight | ImDrawCornerFlags_BotRight
};

#    endif  // #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS

//-----------------------------------------------------------------------------

#    if defined(__clang__)
#        pragma clang diagnostic pop
#    elif defined(__GNUC__)
#        pragma GCC diagnostic pop
#    endif

#    ifdef _MSC_VER
#        pragma warning(pop)
#    endif

// Include imgui_user.h at the end of imgui.h (convenient for user to only explicitly include vanilla imgui.h)
#    ifdef IMGUI_INCLUDE_IMGUI_USER_H
#        include "imgui_user.h"
#    endif

#endif  // #ifndef IMGUI_DISABLE