gecko/gfx/layers/d3d10/ThebesLayerD3D10.h

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The Original Code is Mozilla Corporation code.
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 * The Initial Developer of the Original Code is Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Bas Schouten <bschouten@mozilla.com>
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#ifndef GFX_THEBESLAYERD3D10_H
#define GFX_THEBESLAYERD3D10_H

#include "Layers.h"
#include "LayerManagerD3D10.h"

namespace mozilla {
namespace layers {

class ThebesLayerD3D10 : public ThebesLayer,
                         public LayerD3D10
{
public:
  ThebesLayerD3D10(LayerManagerD3D10 *aManager);
  virtual ~ThebesLayerD3D10();

  /* ThebesLayer implementation */
  void InvalidateRegion(const nsIntRegion& aRegion);

  /* LayerD3D10 implementation */
  virtual Layer* GetLayer();
  virtual void RenderLayer();
  virtual void Validate();
  virtual void LayerManagerDestroyed();

private:
  /* Texture with our surface data */
  nsRefPtr<ID3D10Texture2D> mTexture;

  /* Shader resource view for our texture */
  nsRefPtr<ID3D10ShaderResourceView> mSRView;

  /* Texture for render-on-whitew when doing component alpha */
  nsRefPtr<ID3D10Texture2D> mTextureOnWhite;

  /* Shader resource view for our render-on-white texture */
  nsRefPtr<ID3D10ShaderResourceView> mSRViewOnWhite;

  /* Visible region used when we drew the contents of the textures */
  nsIntRegion mTextureRegion;

  /* Checks if our D2D surface has the right content type */
  void VerifyContentType(SurfaceMode aMode);

  /* This contains the thebes surface */
  nsRefPtr<gfxASurface> mD2DSurface;

  /* This contains the thebes surface for our render-on-white texture */
  nsRefPtr<gfxASurface> mD2DSurfaceOnWhite;

  /* Have a region of our layer drawn */
  void DrawRegion(nsIntRegion &aRegion, SurfaceMode aMode);

  /* Create a new texture */
  void CreateNewTextures(const gfxIntSize &aSize, SurfaceMode aMode);

  /* Copy a texture region */
  void CopyRegion(ID3D10Texture2D* aSrc, const nsIntPoint &aSrcOffset,
                  ID3D10Texture2D* aDest, const nsIntPoint &aDestOffset,
                  const nsIntRegion &aCopyRegion, nsIntRegion* aValidRegion,
                  float aXRes, float aYRes);

  /**
   * Calculate the desired texture resolution based on
   * the layer managers resolution, and the current
   * transforms scale factor.
   */
  void GetDesiredResolutions(float& aXRes, float& aYRes);

  /* Check if the current texture resolution matches the stored resolution. */
  bool ResolutionChanged(float aXRes, float aYRes);
};

} /* layers */
} /* mozilla */
#endif /* GFX_THEBESLAYERD3D10_H */