/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef GFX_COPYABLECANVASLAYER_H #define GFX_COPYABLECANVASLAYER_H #include <stdint.h> // for uint32_t #include "GLContextTypes.h" // for GLContext #include "Layers.h" // for CanvasLayer, etc #include "gfxContext.h" // for gfxContext, etc #include "gfxTypes.h" #include "gfxPlatform.h" // for gfxImageFormat #include "mozilla/Assertions.h" // for MOZ_ASSERT, etc #include "mozilla/Preferences.h" // for Preferences #include "mozilla/RefPtr.h" // for RefPtr #include "mozilla/gfx/2D.h" // for DrawTarget #include "mozilla/mozalloc.h" // for operator delete, etc #include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc namespace mozilla { namespace gl { class SharedSurface; } // namespace gl namespace layers { /** * A shared CanvasLayer implementation that supports copying * its contents into a gfxASurface using UpdateSurface. */ class CopyableCanvasLayer : public CanvasLayer { public: CopyableCanvasLayer(LayerManager* aLayerManager, void *aImplData); protected: virtual ~CopyableCanvasLayer(); public: virtual void Initialize(const Data& aData) override; virtual bool IsDataValid(const Data& aData) override; bool IsGLLayer() { return !!mGLContext; } protected: RefPtr<gl::GLContext> mGLContext; RefPtr<PersistentBufferProvider> mBufferProvider; UniquePtr<gl::SharedSurface> mGLFrontbuffer; bool mIsAlphaPremultiplied; gl::OriginPos mOriginPos; bool mIsMirror; RefPtr<gfx::DataSourceSurface> mCachedTempSurface; gfx::DataSourceSurface* GetTempSurface(const gfx::IntSize& aSize, const gfx::SurfaceFormat aFormat); }; } // namespace layers } // namespace mozilla #endif