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/* -*- 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
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