gfx/2d/SourceSurfaceDual.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_GFX_SOURCESURFACEDUAL_H_
   8 #define MOZILLA_GFX_SOURCESURFACEDUAL_H_
   9
  10 #include "2D.h"
  11
  12 namespace mozilla {
  13 namespace gfx {
  14
  15 class DualSurface;
  16 class DualPattern;
  17
  18 class SourceSurfaceDual : public SourceSurface {
  19  public:
  20   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SourceSurfaceDual, override)
  21
  22   SourceSurfaceDual(DrawTarget* aDTA, DrawTarget* aDTB)
  23       : mA(aDTA->Snapshot()), mB(aDTB->Snapshot()) {}
  24
  25   SourceSurfaceDual(SourceSurface* aSourceA, SourceSurface* aSourceB)
  26       : mA(aSourceA), mB(aSourceB) {}
  27
  28   virtual SurfaceType GetType() const override { return SurfaceType::DUAL_DT; }
  29   virtual IntSize GetSize() const override { return mA->GetSize(); }
  30   virtual SurfaceFormat GetFormat() const override { return mA->GetFormat(); }
  31
  32   // TODO: This is probably wrong as this was originally only
  33   // used for debugging purposes, but now has legacy relying on
  34   // giving the first type only.
  35   virtual already_AddRefed<DataSourceSurface> GetDataSurface() override {
  36     return mA->GetDataSurface();
  37   }
  38
  39   SourceSurface* GetFirstSurface() {
  40     MOZ_ASSERT(mA->GetType() == mB->GetType());
  41     return mA;
  42   }
  43
  44   bool SameSurfaceTypes() { return mA->GetType() == mB->GetType(); }
  45
  46  private:
  47   friend class DualSurface;
  48   friend class DualPattern;
  49
  50   RefPtr<SourceSurface> mA;
  51   RefPtr<SourceSurface> mB;
  52 };
  53
  54 }  // namespace gfx
  55 }  // namespace mozilla
  56
  57 #endif /* MOZILLA_GFX_SOURCESURFACEDUAL_H_ */