//============================================================================
//
//   SSSS    tt          lll  lll
//  SS  SS   tt           ll   ll
//  SS     tttttt  eeee   ll   ll   aaaa
//   SSSS    tt   ee  ee  ll   ll      aa
//      SS   tt   eeeeee  ll   ll   aaaaa  --  "An Atari 2600 VCS Emulator"
//  SS  SS   tt   ee      ll   ll  aa  aa
//   SSSS     ttt  eeeee llll llll  aaaaa
//
// Copyright (c) 1995-2017 by Bradford W. Mott, Stephen Anthony
// and the Stella Team
//
// See the file "License.txt" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================

#ifndef FBSURFACE_SDL2_HXX
#define FBSURFACE_SDL2_HXX

#include "bspf.hxx"
#include "FrameBufferSDL2.hxx"

/**
  An FBSurface suitable for the SDL2 Render2D API, making use of hardware
  acceleration behind the scenes.

  @author  Stephen Anthony
*/
class FBSurfaceSDL2 : public FBSurface
{
  public:
    FBSurfaceSDL2(FrameBufferSDL2& buffer, uInt32 width, uInt32 height,
                  const uInt32* data);
    virtual ~FBSurfaceSDL2();

    // Most of the surface drawing primitives are implemented in FBSurface;
    // the ones implemented here use SDL-specific code for extra performance
    //
    void fillRect(uInt32 x, uInt32 y, uInt32 w, uInt32 h, uInt32 color) override;
    // With hardware surfaces, it's faster to just update the entire surface
    void setDirty() override { mySurfaceIsDirty = true; }

    uInt32 width() const override;
    uInt32 height() const override;

    const GUI::Rect& srcRect() const override;
    const GUI::Rect& dstRect() const override;
    void setSrcPos(uInt32 x, uInt32 y) override;
    void setSrcSize(uInt32 w, uInt32 h) override;
    void setDstPos(uInt32 x, uInt32 y) override;
    void setDstSize(uInt32 w, uInt32 h) override;
    void setVisible(bool visible) override;

    void translateCoords(Int32& x, Int32& y) const override;
    bool render() override;
    void invalidate() override;
    void free() override;
    void reload() override;
    void resize(uInt32 width, uInt32 height) override;

  protected:
    void applyAttributes(bool immediate) override;

  private:
    void createSurface(uInt32 width, uInt32 height, const uInt32* data);

    // Following constructors and assignment operators not supported
    FBSurfaceSDL2() = delete;
    FBSurfaceSDL2(const FBSurfaceSDL2&) = delete;
    FBSurfaceSDL2(FBSurfaceSDL2&&) = delete;
    FBSurfaceSDL2& operator=(const FBSurfaceSDL2&) = delete;
    FBSurfaceSDL2& operator=(FBSurfaceSDL2&&) = delete;

  private:
    FrameBufferSDL2& myFB;

    SDL_Surface* mySurface;
    SDL_Texture* myTexture;
    SDL_Rect mySrcR, myDstR;

    bool mySurfaceIsDirty;
    bool myIsVisible;

    SDL_TextureAccess myTexAccess;  // Is pixel data constant or can it change?
    bool myInterpolate;   // Scaling is smoothed or blocky
    bool myBlendEnabled;  // Blending is enabled
    uInt8 myBlendAlpha;   // Alpha to use in blending mode

    uInt32* myStaticData; // The data to use when the buffer contents are static
    uInt32 myStaticPitch; // The number of bytes in a row of static data

    GUI::Rect mySrcGUIR, myDstGUIR;
};

#endif
