gfx/2d/DataSourceSurfaceWrapper.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_DATASOURCESURFACEWRAPPER_H_
   8 #define MOZILLA_GFX_DATASOURCESURFACEWRAPPER_H_
   9
  10 #include "2D.h"
  11
  12 namespace mozilla {
  13 namespace gfx {
  14
  15 // Wraps a DataSourceSurface and forwards all methods except for GetType(),
  16 // from which it always returns SurfaceType::DATA.
  17 class DataSourceSurfaceWrapper final : public DataSourceSurface {
  18  public:
  19   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceWrapper, override)
  20   explicit DataSourceSurfaceWrapper(DataSourceSurface* aSurface)
  21       : mSurface(aSurface) {}
  22
  23   bool Equals(SourceSurface* aOther, bool aSymmetric = true) override {
  24     return DataSourceSurface::Equals(aOther, aSymmetric) ||
  25            mSurface->Equals(aOther, aSymmetric);
  26   }
  27
  28   SurfaceType GetType() const override { return SurfaceType::DATA; }
  29
  30   uint8_t* GetData() override { return mSurface->GetData(); }
  31   int32_t Stride() override { return mSurface->Stride(); }
  32   IntSize GetSize() const override { return mSurface->GetSize(); }
  33   SurfaceFormat GetFormat() const override { return mSurface->GetFormat(); }
  34   bool IsValid() const override { return mSurface->IsValid(); }
  35
  36   bool Map(MapType aType, MappedSurface* aMappedSurface) override {
  37     return mSurface->Map(aType, aMappedSurface);
  38   }
  39
  40   void Unmap() override { mSurface->Unmap(); }
  41
  42  private:
  43   RefPtr<DataSourceSurface> mSurface;
  44 };
  45
  46 }  // namespace gfx
  47 }  // namespace mozilla
  48
  49 #endif /* MOZILLA_GFX_DATASOURCESURFACEWRAPPER_H_ */