CanvasOpenGL3.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2024 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
//
 
#ifndef TGUI_CANVAS_OPENGL3_HPP
#define TGUI_CANVAS_OPENGL3_HPP
 
#include <TGUI/Backend/Renderer/OpenGL3/BackendTextureOpenGL3.hpp>
 
#if !TGUI_BUILD_AS_CXX_MODULE
    #include <TGUI/Backend/Renderer/BackendRenderTarget.hpp>
    #include <TGUI/Widgets/CanvasBase.hpp>
#endif
 
 
TGUI_MODULE_EXPORT namespace tgui
{
    class TGUI_API CanvasOpenGL3 : public CanvasBase
    {
    public:
 
        using Ptr = std::shared_ptr<CanvasOpenGL3>; 
        using ConstPtr = std::shared_ptr<const CanvasOpenGL3>; 
 
        static constexpr const char StaticWidgetType[] = "CanvasOpenGL3"; 
 
        CanvasOpenGL3(const char* typeName = StaticWidgetType, bool initRenderer = true);
 
        CanvasOpenGL3(const CanvasOpenGL3& copy);
 
        CanvasOpenGL3(CanvasOpenGL3&& copy) = default;
 
        ~CanvasOpenGL3() override;
 
        CanvasOpenGL3& operator= (const CanvasOpenGL3& right);
 
        CanvasOpenGL3& operator= (CanvasOpenGL3&& right) = default;
 
        TGUI_NODISCARD static CanvasOpenGL3::Ptr create(const Layout2d& size = {"100%", "100%"});
 
        TGUI_NODISCARD static CanvasOpenGL3::Ptr copy(const CanvasOpenGL3::ConstPtr& canvas);
 
        void setSize(const Layout2d& size) override;
        using Widget::setSize;
 
        void draw(BackendRenderTarget& target, RenderStates states) const override;
 
        unsigned int bindFramebuffer() const;
 
    protected:
 
        // Makes a copy of the widget
        TGUI_NODISCARD Widget::Ptr clone() const override;
 
    protected:
 
        unsigned int m_textureId = 0;
        unsigned int m_frameBuffer = 0;
        Vector2u m_textureSize;
        Vector2u m_usedTextureSize;
        std::shared_ptr<BackendTextureOpenGL3> m_backendTexture = std::make_shared<BackendTextureOpenGL3>();
    };
}
 
 
#endif // TGUI_CANVAS_OPENGL3_HPP