61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_AUTOMASKDATA_H_
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#define GFX_AUTOMASKDATA_H_
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#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor
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namespace mozilla {
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namespace layers {
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/**
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* Drawing with a mask requires a mask surface and a transform.
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*
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* This helper class manages the SourceSurface logic.
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*/
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class MOZ_STACK_CLASS AutoMoz2DMaskData {
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public:
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AutoMoz2DMaskData() { }
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~AutoMoz2DMaskData() { }
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void Construct(const gfx::Matrix& aTransform,
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gfx::SourceSurface* aSurface)
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{
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MOZ_ASSERT(!IsConstructed());
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mTransform = aTransform;
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mSurface = aSurface;
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}
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gfx::SourceSurface* GetSurface()
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{
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MOZ_ASSERT(IsConstructed());
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return mSurface.get();
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}
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const gfx::Matrix& GetTransform()
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{
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MOZ_ASSERT(IsConstructed());
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return mTransform;
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}
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private:
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bool IsConstructed()
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{
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return !!mSurface;
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}
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gfx::Matrix mTransform;
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RefPtr<gfx::SourceSurface> mSurface;
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AutoMoz2DMaskData(const AutoMoz2DMaskData&) = delete;
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AutoMoz2DMaskData& operator=(const AutoMoz2DMaskData&) = delete;
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};
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} // namespace layers
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} // namespace mozilla
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#endif // GFX_AUTOMASKDATA_H_
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