Texture.hh

/*
  libSDL2pp - C++ bindings/wrapper for SDL2
  Copyright (C) 2013-2016 Dmitry Marakasov <amdmi3@amdmi3.ru>
 
  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 SDL2PP_TEXTURE_HH
#define SDL2PP_TEXTURE_HH
 
#include <string>
 
#include <SDL_stdinc.h>
#include <SDL_blendmode.h>
 
#include <SDL2pp/Optional.hh>
#include <SDL2pp/Rect.hh>
#include <SDL2pp/Config.hh>
#include <SDL2pp/Export.hh>
#include <SDL2pp/Color.hh>
 
struct SDL_Texture;
 
namespace SDL2pp {
 
class Renderer;
class RWops;
class Surface;
 
class SDL2PP_EXPORT Texture {
private:
    SDL_Texture* texture_; 
 
public:
    class LockHandle {
        friend class Texture;
    private:
        Texture* texture_; 
        void* pixels_;     
        int pitch_;        
 
    private:
        LockHandle(Texture* texture, const Optional<Rect>& rect);
 
    public:
        LockHandle();
 
        ~LockHandle();
 
        LockHandle(LockHandle&& other) noexcept;
 
        LockHandle& operator=(LockHandle&& other) noexcept;
 
        LockHandle(const LockHandle& other) = delete;
 
        LockHandle& operator=(const LockHandle& other) = delete;
 
        void* GetPixels() const;
 
        int GetPitch() const;
    };
 
public:
    explicit Texture(SDL_Texture* texture);
 
    Texture(Renderer& renderer, Uint32 format, int access, int w, int h);
 
#ifdef SDL2PP_WITH_IMAGE
    Texture(Renderer& renderer, RWops& rwops);
 
    Texture(Renderer& renderer, const std::string& filename);
#endif
 
    Texture(Renderer& renderer, const Surface& surface);
 
    virtual ~Texture();
 
    Texture(Texture&& other) noexcept;
 
    Texture& operator=(Texture&& other) noexcept;
 
    Texture(const Texture& other) = delete;
 
    Texture& operator=(const Texture& other) = delete;
 
    SDL_Texture* Get() const;
 
    Texture& Update(const Optional<Rect>& rect, const void* pixels, int pitch);
 
    Texture& Update(const Optional<Rect>& rect, Surface& surface);
 
    Texture& Update(const Optional<Rect>& rect, Surface&& surface);
 
    Texture& UpdateYUV(const Optional<Rect>& rect, const Uint8* yplane, int ypitch, const Uint8* uplane, int upitch, const Uint8* vplane, int vpitch);
 
    Texture& SetBlendMode(SDL_BlendMode blendMode = SDL_BLENDMODE_NONE);
 
    Texture& SetAlphaMod(Uint8 alpha = 255);
 
    Texture& SetColorMod(Uint8 r = 255, Uint8 g = 255, Uint8 b = 255);
 
    Texture& SetColorAndAlphaMod(const Color& color = Color{255, 255, 255, SDL_ALPHA_OPAQUE});
 
    LockHandle Lock(const Optional<Rect>& rect = NullOpt);
 
    Uint32 GetFormat() const;
 
    int GetAccess() const;
 
    int GetWidth() const;
 
    int GetHeight() const;
 
    Point GetSize() const;
 
    Uint8 GetAlphaMod() const;
 
    SDL_BlendMode GetBlendMode() const;
 
    void GetColorMod(Uint8& r, Uint8& g, Uint8 &b) const;
 
    Color GetColorAndAlphaMod() const;
};
 
}
 
#endif