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Fix #507

This commit is contained in:
halx99 2021-09-26 12:05:42 +08:00
parent 629625a976
commit 24f76a53b3
1 changed files with 119 additions and 97 deletions
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94
extensions/ImGuiEXT/imgui_impl_cocos2dx.cpp
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@ -1,3 +1,9 @@
/*
* The imgui adxe backend
* refer to
* a. https://github.com/ocornut/imgui/blob/835a5344b01e79aca479e95fa9d36fb5fdef3d14/backends/imgui_impl_glfw.cpp
* b. https://github.com/Xrysnow/cocos2d-x-imgui/blob/master/imgui_impl_cocos2dx.cpp
*/
#include "imgui_impl_cocos2dx.h"
#include "cocos2d.h"
#include "renderer/backend/Backend.h"
@ -5,28 +11,33 @@
#ifdef CC_PLATFORM_PC
// GLFW
#ifdef _WIN32
#include "glfw3.h"
#ifdef _WIN32
#undef APIENTRY
#ifndef GLFW_EXPOSE_NATIVE_WIN32
#define GLFW_EXPOSE_NATIVE_WIN32
#endif
#include "glfw3native.h"
#else
#include <glfw3.h>
#endif // _WIN32
static_assert(
GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300,
"glfw version should be 3.3+");
// 3.3.1+ Fixed: Resizing window repositions it on MacOS #1553
#define GLFW_HAS_OSX_WINDOW_POS_FIX (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 + GLFW_VERSION_REVISION * 10 >= 3310)
#ifdef GLFW_RESIZE_NESW_CURSOR
#define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400)
#define GLFW_HAS_WINDOW_TOPMOST (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ GLFW_FLOATING
#define GLFW_HAS_WINDOW_HOVERED (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_HOVERED
#define GLFW_HAS_WINDOW_ALPHA (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity
#define GLFW_HAS_PER_MONITOR_DPI (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale
#define GLFW_HAS_VULKAN (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface
#define GLFW_HAS_FOCUS_WINDOW (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwFocusWindow
#define GLFW_HAS_FOCUS_ON_SHOW (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_FOCUS_ON_SHOW
#define GLFW_HAS_MONITOR_WORK_AREA (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorWorkarea
#define GLFW_HAS_OSX_WINDOW_POS_FIX (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 + GLFW_VERSION_REVISION * 10 >= 3310) // 3.3.1+ Fixed: Resizing window repositions it on MacOS #1553
#ifdef GLFW_RESIZE_NESW_CURSOR // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
#define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
#else
#define GLFW_HAS_NEW_CURSORS (0)
#endif
#ifdef GLFW_MOUSE_PASSTHROUGH // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2020-07-17 (passthrough)
#define GLFW_HAS_MOUSE_PASSTHROUGH (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_MOUSE_PASSTHROUGH
#else
#define GLFW_HAS_MOUSE_PASSTHROUGH (0)
#endif
#endif // CC_PLATFORM_PC
@ -264,6 +275,8 @@ void ImGui_ImplCocos2dx_RenderDrawData(ImDrawData* draw_data)
*desc.programState->getVertexLayout() = pinfo->layout;
desc.programState->setUniform(pinfo->projection, &g_Projection, sizeof(Mat4));
desc.programState->setTexture(pinfo->texture, 0, tex->getBackendTexture());
// In order to composite our output buffer we need to preserve alpha
desc.blendDescriptor.sourceAlphaBlendFactor = BlendFactor::ONE;
// set vertex/index buffer
cmd->setIndexBuffer(ibuffer, g_IndexFormat);
cmd->setVertexBuffer(vbuffer);
@ -786,41 +799,49 @@ static void ImGui_ImplCocos2dx_UpdateMousePosAndButtons()
{
#ifdef CC_PLATFORM_PC
const auto g_Window = ImGui_ImplCocos2dx_GetWindow();
// Update buttons
ImGuiIO& io = ImGui::GetIO();
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
const ImVec2 mouse_pos_prev = io.MousePos;
io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
io.MouseHoveredViewport = 0;
// Update mouse buttons
// (if a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame)
for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
{
// If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
io.MouseDown[i] = g_MouseJustPressed[i] || glfwGetMouseButton(g_Window, i) != 0;
g_MouseJustPressed[i] = false;
}
// Update mouse position
const ImVec2 mouse_pos_backup = io.MousePos;
io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
io.MouseHoveredViewport = 0;
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
for (int n = 0; n < platform_io.Viewports.Size; n++)
{
ImGuiViewport* viewport = platform_io.Viewports[n];
GLFWwindow* window = (GLFWwindow*)viewport->PlatformHandle;
IM_ASSERT(window != NULL);
#ifdef __EMSCRIPTEN__
const bool focused = true;
IM_ASSERT(platform_io.Viewports.Size == 1);
#else
const bool focused = glfwGetWindowAttrib(window, GLFW_FOCUSED) != 0;
#endif
GLFWwindow* mouse_window = window; // (bd->MouseWindow == window || focused) ? window : NULL;
// Update mouse buttons
if (focused)
{
if (io.WantSetMousePos)
{
glfwSetCursorPos(window, (double)mouse_pos_backup.x, (double)mouse_pos_backup.y);
}
else
for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
io.MouseDown[i] |= glfwGetMouseButton(window, i) != 0;
// Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
// (When multi-viewports are enabled, all Dear ImGui positions are same as OS positions)
if (io.WantSetMousePos && focused)
glfwSetCursorPos(window, (double)(mouse_pos_prev.x - viewport->Pos.x), (double)(mouse_pos_prev.y - viewport->Pos.y));
// Set Dear ImGui mouse position from OS position
if (mouse_window != NULL)
{
double mouse_x, mouse_y;
glfwGetCursorPos(window, &mouse_x, &mouse_y);
glfwGetCursorPos(mouse_window, &mouse_x, &mouse_y);
if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
{
// Multi-viewport mode: mouse position in OS absolute coordinates (io.MousePos is (0,0) when the mouse is on the upper-left of the primary monitor)
@ -834,20 +855,21 @@ static void ImGui_ImplCocos2dx_UpdateMousePosAndButtons()
io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);
}
}
for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
io.MouseDown[i] |= glfwGetMouseButton(window, i) != 0;
}
// (Optional) When using multiple viewports: set io.MouseHoveredViewport to the viewport the OS mouse cursor is hovering.
// Important: this information is not easy to provide and many high-level windowing library won't be able to provide it correctly, because
// - This is _ignoring_ viewports with the ImGuiViewportFlags_NoInputs flag (pass-through windows).
// - This is _regardless_ of whether another viewport is focused or being dragged from.
// If ImGuiBackendFlags_HasMouseHoveredViewport is not set by the back-end, imgui will ignore this field and infer the information by relying on the
// If ImGuiBackendFlags_HasMouseHoveredViewport is not set by the backend, imgui will ignore this field and infer the information by relying on the
// rectangles and last focused time of every viewports it knows about. It will be unaware of other windows that may be sitting between or over your windows.
// [GLFW] FIXME: This is currently only correct on Win32. See what we do below with the WM_NCHITTEST, missing an equivalent for other systems.
// See https://github.com/glfw/glfw/issues/1236 if you want to help in making this a GLFW feature.
#if GLFW_HAS_GLFW_HOVERED && CC_TARGET_PLATFORM == CC_PLATFORM_WIN32
if (glfwGetWindowAttrib(window, GLFW_HOVERED) && !(viewport->Flags & ImGuiViewportFlags_NoInputs))
#if GLFW_HAS_MOUSE_PASSTHROUGH || (GLFW_HAS_WINDOW_HOVERED && defined(_WIN32))
const bool window_no_input = (viewport->Flags & ImGuiViewportFlags_NoInputs) != 0;
#if GLFW_HAS_MOUSE_PASSTHROUGH
glfwSetWindowAttrib(window, GLFW_MOUSE_PASSTHROUGH, window_no_input);
#endif
if (glfwGetWindowAttrib(window, GLFW_HOVERED) && !window_no_input)
io.MouseHoveredViewport = viewport->ID;
#endif
}
@ -877,7 +899,7 @@ static void ImGui_ImplCocos2dx_UpdateMousePosAndButtons()
io.MousePos.y = g_CursorPos.y * glv->getScaleY() + rect.origin.y;
}
}
#endif // CC_PLATFORM_PC
#endif
}
static void ImGui_ImplCocos2dx_UpdateMouseCursor()
@ -1173,7 +1195,7 @@ static void ImGui_ImplGlfw_DestroyWindow(ImGuiViewport* viewport)
AddRendererCommand([=]()
{
#if GLFW_HAS_GLFW_HOVERED && CC_TARGET_PLATFORM == CC_PLATFORM_WIN32
HWND hwnd = PlatformHandleRaw;
HWND hwnd = (HWND)PlatformHandleRaw;
::RemovePropA(hwnd, "IMGUI_VIEWPORT");
#endif
glfwDestroyWindow(window);