michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:   * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0:      
michael@0: #ifndef MOZILLA_GFX_SOURCESURFACEDUAL_H_
michael@0: #define MOZILLA_GFX_SOURCESURFACEDUAL_H_
michael@0:      
michael@0: #include "2D.h"
michael@0:      
michael@0: namespace mozilla {
michael@0: namespace gfx {
michael@0: 
michael@0: class DualSurface;
michael@0: class DualPattern;
michael@0: 
michael@0: class SourceSurfaceDual : public SourceSurface
michael@0: {
michael@0: public:
michael@0:   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SourceSurfaceDual)
michael@0:   SourceSurfaceDual(DrawTarget *aDTA, DrawTarget *aDTB)
michael@0:     : mA(aDTA->Snapshot())
michael@0:     , mB(aDTB->Snapshot())
michael@0:   { }
michael@0: 
michael@0:   virtual SurfaceType GetType() const { return SurfaceType::DUAL_DT; }
michael@0:   virtual IntSize GetSize() const { return mA->GetSize(); }
michael@0:   virtual SurfaceFormat GetFormat() const { return mA->GetFormat(); }
michael@0: 
michael@0:   /* Readback from this surface type is not supported! */
michael@0:   virtual TemporaryRef<DataSourceSurface> GetDataSurface() { return nullptr; }
michael@0: private:
michael@0:   friend class DualSurface;
michael@0:   friend class DualPattern;
michael@0: 
michael@0:   RefPtr<SourceSurface> mA;
michael@0:   RefPtr<SourceSurface> mB;
michael@0: };
michael@0: 
michael@0: }
michael@0: }
michael@0: 
michael@0: #endif /* MOZILLA_GFX_SOURCESURFACEDUAL_H_ */