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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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60
gfx/layers/basic/AutoMaskData.h Normal file
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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_AUTOMASKDATA_H_
#define GFX_AUTOMASKDATA_H_
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor
namespace mozilla {
namespace layers {
/**
* Drawing with a mask requires a mask surface and a transform.
*
* This helper class manages the SourceSurface logic.
*/
class MOZ_STACK_CLASS AutoMoz2DMaskData {
public:
AutoMoz2DMaskData() { }
~AutoMoz2DMaskData() { }
void Construct(const gfx::Matrix& aTransform,
gfx::SourceSurface* aSurface)
{
MOZ_ASSERT(!IsConstructed());
mTransform = aTransform;
mSurface = aSurface;
}
gfx::SourceSurface* GetSurface()
{
MOZ_ASSERT(IsConstructed());
return mSurface.get();
}
const gfx::Matrix& GetTransform()
{
MOZ_ASSERT(IsConstructed());
return mTransform;
}
private:
bool IsConstructed()
{
return !!mSurface;
}
gfx::Matrix mTransform;
RefPtr<gfx::SourceSurface> mSurface;
AutoMoz2DMaskData(const AutoMoz2DMaskData&) = delete;
AutoMoz2DMaskData& operator=(const AutoMoz2DMaskData&) = delete;
};
} // namespace layers
} // namespace mozilla
#endif // GFX_AUTOMASKDATA_H_