axmol/core/renderer/CCCallbackCommand.h

/****************************************************************************
 Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
 Copyright (c) 2022 Bytedance Inc.

 https://axis-project.github.io/

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
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 The above copyright notice and this permission notice shall be included in
 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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#pragma once

#include "renderer/backend/PixelBufferDescriptor.h"
#include "renderer/CCRenderCommand.h"
#include "base/CCRefPtr.h"

/**
 * @addtogroup renderer
 * @{
 */

NS_AX_BEGIN

namespace backend
{
class TextureBackend;
}

/**
Callback command is used to invoke a callback function when this command is
executed. You can do some logic opertion in the callback, such as invoking
renderer to set depth/stencil test. Don't suggest to invoke backen API in
the callback function.
*/
class AX_DLL CallbackCommand : public RenderCommand
{
    // only allow render to manage the callbackCommand
    friend class Renderer;
    CallbackCommand();
    ~CallbackCommand(){};

public:
    void init(float globalZOrder);
    void init(float globalZorder, const Mat4& transform, unsigned int);

    /**
     * @brief Reset the command state for reuse
     * 
     */
    void reset();

    /**
     Execute the render command and call callback functions.
     */
    void execute();
    /**Callback function.*/
    std::function<void()> func;
};

NS_AX_END
/**
 end of support group
 @}
 */