gfx/2d/SourceSurfaceDual.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2   * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef MOZILLA_GFX_SOURCESURFACEDUAL_H_
   7 #define MOZILLA_GFX_SOURCESURFACEDUAL_H_
   8
   9 #include "2D.h"
  10
  11 namespace mozilla {
  12 namespace gfx {
  13
  14 class DualSurface;
  15 class DualPattern;
  16
  17 class SourceSurfaceDual : public SourceSurface
  18 {
  19 public:
  20   SourceSurfaceDual(DrawTarget *aDTA, DrawTarget *aDTB)
  21     : mA(aDTA->Snapshot())
  22     , mB(aDTB->Snapshot())
  23   { }
  24
  25   virtual SurfaceType GetType() const { return SURFACE_DUAL_DT; }
  26   virtual IntSize GetSize() const { return mA->GetSize(); }
  27   virtual SurfaceFormat GetFormat() const { return mA->GetFormat(); }
  28
  29   /* Readback from this surface type is not supported! */
  30   virtual TemporaryRef<DataSourceSurface> GetDataSurface() { return nullptr; }
  31 private:
  32   friend class DualSurface;
  33   friend class DualPattern;
  34
  35   RefPtr<SourceSurface> mA;
  36   RefPtr<SourceSurface> mB;
  37 };
  38
  39 }
  40 }
  41
  42 #endif /* MOZILLA_GFX_SOURCESURFACEDUAL_H_ */