axmol/core/base/ccUtils.h

/****************************************************************************
Copyright (c) 2010      cocos2d-x.org
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
Copyright (c) 2020 c4games.com
Copyright (c) 2021 Bytedance Inc.

https://adxeproject.github.io/

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all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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****************************************************************************/
#ifndef __CC_UTILS_H__
#define __CC_UTILS_H__

#include <vector>
#include <string>
#include "2d/CCNode.h"
#include "base/ccMacros.h"
#include "base/CCRefPtr.h"
#include "base/CCData.h"
#include "renderer/backend/Types.h"
#include "math/Mat4.h"

/** @file ccUtils.h
Misc free functions
*/

NS_CC_BEGIN
/*
ccNextPOT function is licensed under the same license that is used in Texture2D.m.
*/

/** Returns the Next Power of Two value.

Examples:
- If "value" is 15, it will return 16.
- If "value" is 16, it will return 16.
- If "value" is 17, it will return 32.
@param value The value to get next power of two.
@return Returns the next power of two value.
@since v0.99.5
*/

int ccNextPOT(int value);

class Sprite;
class Image;

namespace utils
{
/** Capture the entire screen.
 * To ensure the snapshot is applied after everything is updated and rendered in the current frame,
 * we need to wrap the operation with a custom command which is then inserted into the tail of the render queue.
 * @param afterCaptured specify the callback function which will be invoked after the snapshot is done.
 * @param filename specify a filename where the snapshot is stored. This parameter can be either an absolute path or a
 * simple base filename ("hello.png" etc.), don't use a relative path containing directory names.("mydir/hello.png"
 * etc.).
 * @since v4.0 with adxe
 */
CC_DLL void captureScreen(std::function<void(RefPtr<Image>)> imageCallback);

/** Capture a specific Node.
 * @param startNode specify the snapshot Node. It should be cocos2d::Scene
 * @param scale
 * @returns: return a Image, then can call saveToFile to save the image as "xxx.png or xxx.jpg".
 * @since v4.0 with adxe
 */
CC_DLL void captureNode(Node* startNode, std::function<void(RefPtr<Image>)> imageCallback, float scale = 1.0f);

/** Capture the entire screen. V4-copmatiable only, [DEPRECATED]
 * To ensure the snapshot is applied after everything is updated and rendered in the current frame,
 * we need to wrap the operation with a custom command which is then inserted into the tail of the render queue.
 * @param afterCaptured specify the callback function which will be invoked after the snapshot is done.
 * @param filename specify a filename where the snapshot is stored. This parameter can be either an absolute path or a
 * simple base filename ("hello.png" etc.), don't use a relative path containing directory names.("mydir/hello.png"
 * etc.).
 * @since v4.0
 */
CC_DLL void captureScreen(std::function<void(bool, std::string_view)> afterCap, std::string_view filename);

/** Find children by name, it will return all child that has the same name.
 * It supports c++ 11 regular expression. It is  a helper function of `Node::enumerateChildren()`.
 * You can refer to `Node::enumerateChildren()` for detail information.
 *
 * @param node The node to find
 * @param name The name to search for, it supports c++ 11 expression
 * @return Array of Nodes that matches the name
 * @since v3.2
 */
CC_DLL std::vector<Node*> findChildren(const Node& node, std::string_view name);

/** Same to ::atof, but strip the string, remain 7 numbers after '.' before call atof.
 * Why we need this? Because in android c++_static, atof ( and std::atof ) is unsupported for numbers have long decimal
 * part and contain several numbers can approximate to 1 ( like 90.099998474121094 ), it will return inf. This function
 * is used to fix this bug.
 * @param str The string be to converted to double.
 * @return Returns converted value of a string.
 */
CC_DLL double atof(const char* str);

/** Get current exact time, accurate to nanoseconds.
 * @return Returns the time in seconds since the Epoch.
 */
CC_DLL double gettime();

/**
 * Get current time in milliseconds, accurate to nanoseconds
 *
 * @return  Returns the time in milliseconds since the Epoch.
 */
CC_DLL long long getTimeInMilliseconds();

/**
 * Calculate unionof bounding box of a node and its children.
 * @return Returns unionof bounding box of a node and its children.
 */
CC_DLL Rect getCascadeBoundingBox(Node* node);

/**
 * Create a sprite instance from base64 encoded image and adds the texture to the Texture Cache.

 * @return Returns an instance of sprite
 */
CC_DLL Sprite* createSpriteFromBase64Cached(const char* base64String, const char* key);

/**
* Create a sprite instance from base64 encoded image.

* @return Returns an instance of sprite
*/
CC_DLL Sprite* createSpriteFromBase64(const char* base64String);

/**
 * Find a child by name recursively

 * @return  Returns found node or nullptr
 */
CC_DLL Node* findChild(Node* levelRoot, std::string_view name);

/**
 * Find a child by tag recursively

 * @return Returns found node or nullptr
 */
CC_DLL Node* findChild(Node* levelRoot, int tag);

/**
 * Find a child by name recursively

 * @return  Returns found node or nullptr with specified type 'T'
 */
template <typename T>
inline T findChild(Node* levelRoot, std::string_view name)
{
    return dynamic_cast<T>(findChild(levelRoot, name));
}

/**
 * Find a child by tag recursively

 * @return  Returns found node or nullptr with specified type 'T'
 */
template <typename T>
inline T findChild(Node* levelRoot, int tag)
{
    return dynamic_cast<T>(findChild(levelRoot, tag));
}

/**
 *  Gets the md5 hash for the given file.
 *  @param filename The file to calculate md5 hash.
 *  @return The md5 hash for the file
 */
CC_DLL std::string getFileMD5Hash(std::string_view filename);

/**
 *  Gets the md5 hash for the given buffer.
 *  @param data The buffer to calculate md5 hash.
 *  @return The md5 hash for the data
 */
CC_DLL std::string getDataMD5Hash(const Data& data);

/**
 *  Gets the hash for the given buffer with specific algorithm.
 *  @param data The buffer to calculate md5 hash.
 *  @param algorithm The hash algorithm, support "md5", "sha1", "sha256", "sha512" and more
 *  @return The hash for the data
 */
CC_DLL std::string computeDigest(std::string_view data, std::string_view algorithm);

/**
@brief Converts language iso 639-1 code to LanguageType enum.
@return LanguageType enum.
* @js NA
* @lua NA
*/
CC_DLL LanguageType getLanguageTypeByISO2(const char* code);

CC_DLL backend::BlendFactor toBackendBlendFactor(int factor);

CC_DLL int toGLBlendFactor(backend::BlendFactor blendFactor);

CC_DLL backend::SamplerFilter toBackendSamplerFilter(int mode);

CC_DLL backend::SamplerAddressMode toBackendAddressMode(int mode);

// Adjust matrix for metal.
CC_DLL const Mat4& getAdjustMatrix();

/**
Get the Normal Matrix of matrixMV
*/
CC_DLL std::vector<float> getNormalMat3OfMat4(const Mat4& mat);

/**
@brief Parses a list of space-separated integers.
@return Vector of ints.
* @js NA
* @lua NA
*/
CC_DLL std::vector<int> parseIntegerList(std::string_view intsString);

/**
@brief translate charstring/binarystream to hexstring.
@return hexstring.
* @js NA
* @lua NA
*/
CC_DLL std::string bin2hex(std::string_view binary /*charstring also regard as binary in C/C++*/,
                           int delim   = -1,
                           bool prefix = false);

/**
@brief killCurrentProcess immidiately, any object's destructor never call
@return NA.
* @js NA
* @lua NA
*/
CC_DLL void killCurrentProcess();

/**
* Create a Game Object, like CREATE_FUNC, but more powerful

* @return  Returns a RefPtr<T> game object
* @remark  Auto manage cocos2d::Ref reference count, use std::unique_ptr
* @limition  The init function finit must be public
*/
template <typename T, typename F, typename... Ts>
static RefPtr<T> makeInstance(F&& memf, Ts&&... args)
{
    RefPtr<T> pRet(ReferencedObject<T>{new T()});
    if (pRet && std::mem_fn(memf)(pRet.get(), std::forward<Ts>(args)...))
        return pRet;

    pRet.reset();
    return pRet;
}

/**
* Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful

* @return  Returns a autorelease game object
* @remark  Auto manage cocos2d::Ref reference count, use std::unique_ptr
* @limition  The init function finit must be public
*/
template <typename T>
inline static RefPtr<T> makeInstance()
{
    return makeInstance<T>(&T::init);
}

/**
* Create a Game Object, like CREATE_FUNC, but more powerful

* @return  Returns a autorelease game object
* @remark  Auto manage cocos2d::Ref reference count, use AutoReleasePool
* @limition The init function finit must be public
*/
template <typename T, typename F, typename... Ts>
inline T* createInstance(F&& finit, Ts&&... args)
{
    T* pRet = new T();
    if (std::mem_fn(finit)(pRet, std::forward<Ts>(args)...))
        pRet->autorelease();
    else
    {
        delete pRet;
        pRet = nullptr;
    }
    return pRet;
}

/**
* Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful

* @return  Returns a autorelease game object
* @remark  Auto manage cocos2d::Ref reference count, use AutoReleasePool
* @limition  The init function finit must be public
*/
template <typename T>
inline T* createInstance()
{
    return ::cocos2d::utils::createInstance<T>(&T::init);
}

/**
* Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful

* @return  Returns a game object
* @remark  You need call release after you don't want use it manually
* @limition  The init function finit must be public
*/
template <typename T, typename F, typename... Ts>
static T* newInstance(F&& memf, Ts&&... args)
{
    T* pRet = new T();
    if (std::mem_fn(memf)(pRet, std::forward<Ts>(args)...))
        return pRet;
    else
    {
        delete pRet;
        pRet = nullptr;
        return nullptr;
    }
}

/**
* Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful

* @return  Returns a game object
* @remark  You need call release after you don't want use it manually
* @limition  The init function finit must be public
*/
template <typename T>
inline static T* newInstance()
{
    return newInstance<T>(&T::init);
}

// check a number is power of two.
inline bool isPOT(int number)
{
    return ((number > 0) && (number & (number - 1)) == 0);
}

// Convert ASCII hex digit to a nibble (four bits, 0 - 15).
//
// Use unsigned to avoid signed overflow UB.
inline unsigned char hex2nibble(unsigned char c)
{
    if (c >= '0' && c <= '9')
    {
        return c - '0';
    }
    else if (c >= 'a' && c <= 'f')
    {
        return 10 + (c - 'a');
    }
    else if (c >= 'A' && c <= 'F')
    {
        return 10 + (c - 'A');
    }
    return 0;
}

// Convert a nibble ASCII hex digit
inline unsigned char nibble2hex(unsigned char c, unsigned char a = 'a')
{
    return ((c) < 0xa ? ((c) + '0') : ((c) + a - 10));
}

// Convert ASCII hex string (two characters) to byte.
//
// E.g., "0B" => 0x0B, "af" => 0xAF.
inline char hex2char(const char* p)
{
    return hex2nibble((uint8_t)p[0]) << 4 | hex2nibble(p[1]);
}

// Convert byte to ASCII hex string (two characters).
inline char* char2hex(char* p, unsigned char c, unsigned char a = 'a')
{
    p[0] = nibble2hex(c >> 4, a);
    p[1] = nibble2hex(c & (uint8_t)0xf, a);
    return p;
}

CC_DLL std::string urlEncode(std::string_view s);

CC_DLL std::string urlDecode(std::string_view st);
}  // namespace utils

NS_CC_END

#endif  // __SUPPORT_CC_UTILS_H__