SFML - Simple and Fast Multimedia Library

SFML

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 //
 // SFML - Simple and Fast Multimedia Library
 // Copyright (C) 2007-2017 Laurent Gomila ([email protected])
 //
 // 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.
 //
 // 3. This notice may not be removed or altered from any source distribution.
 //
 
 #ifndef SFML_RENDERTARGET_HPP
 #define SFML_RENDERTARGET_HPP
 
 // Headers
 #include <SFML/Graphics/Export.hpp>
 #include <SFML/Graphics/Color.hpp>
 #include <SFML/Graphics/Rect.hpp>
 #include <SFML/Graphics/View.hpp>
 #include <SFML/Graphics/Transform.hpp>
 #include <SFML/Graphics/BlendMode.hpp>
 #include <SFML/Graphics/RenderStates.hpp>
 #include <SFML/Graphics/PrimitiveType.hpp>
 #include <SFML/Graphics/Vertex.hpp>
 #include <SFML/System/NonCopyable.hpp>
 
 
 namespace sf
 {
 class Drawable;
 
 class SFML_GRAPHICS_API RenderTarget : NonCopyable
 {
 public:
 
     virtual ~RenderTarget();
 
     void clear(const Color& color = Color(0, 0, 0, 255));
 
     void setView(const View& view);
 
     const View& getView() const;
 
     const View& getDefaultView() const;
 
     IntRect getViewport(const View& view) const;
 
     Vector2f mapPixelToCoords(const Vector2i& point) const;
 
     Vector2f mapPixelToCoords(const Vector2i& point, const View& view) const;
 
     Vector2i mapCoordsToPixel(const Vector2f& point) const;
 
     Vector2i mapCoordsToPixel(const Vector2f& point, const View& view) const;
 
     void draw(const Drawable& drawable, const RenderStates& states = RenderStates::Default);
 
     void draw(const Vertex* vertices, std::size_t vertexCount,
               PrimitiveType type, const RenderStates& states = RenderStates::Default);
 
     virtual Vector2u getSize() const = 0;
 
     void pushGLStates();
 
     void popGLStates();
 
     void resetGLStates();
 
 protected:
 
     RenderTarget();
 
     void initialize();
 
 private:
 
     void applyCurrentView();
 
     void applyBlendMode(const BlendMode& mode);
 
     void applyTransform(const Transform& transform);
 
     void applyTexture(const Texture* texture);
 
     void applyShader(const Shader* shader);
 
     virtual bool activate(bool active) = 0;
 
     struct StatesCache
     {
         enum {VertexCacheSize = 4};
 
         bool      glStatesSet;    
         bool      viewChanged;    
         BlendMode lastBlendMode;  
         Uint64    lastTextureId;  
         bool      useVertexCache; 
         Vertex    vertexCache[VertexCacheSize]; 
     };
 
     // Member data
  View        m_defaultView; 
     View        m_view;        
     StatesCache m_cache;       
 };
 
 } // namespace sf
 
 
 #endif // SFML_RENDERTARGET_HPP
 
 
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