1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/basic/AutoMaskData.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,60 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef GFX_AUTOMASKDATA_H_
1.10 +#define GFX_AUTOMASKDATA_H_
1.11 +
1.12 +#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor
1.13 +
1.14 +namespace mozilla {
1.15 +namespace layers {
1.16 +
1.17 +/**
1.18 + * Drawing with a mask requires a mask surface and a transform.
1.19 + *
1.20 + * This helper class manages the SourceSurface logic.
1.21 + */
1.22 +class MOZ_STACK_CLASS AutoMoz2DMaskData {
1.23 +public:
1.24 + AutoMoz2DMaskData() { }
1.25 + ~AutoMoz2DMaskData() { }
1.26 +
1.27 + void Construct(const gfx::Matrix& aTransform,
1.28 + gfx::SourceSurface* aSurface)
1.29 + {
1.30 + MOZ_ASSERT(!IsConstructed());
1.31 + mTransform = aTransform;
1.32 + mSurface = aSurface;
1.33 + }
1.34 +
1.35 + gfx::SourceSurface* GetSurface()
1.36 + {
1.37 + MOZ_ASSERT(IsConstructed());
1.38 + return mSurface.get();
1.39 + }
1.40 +
1.41 + const gfx::Matrix& GetTransform()
1.42 + {
1.43 + MOZ_ASSERT(IsConstructed());
1.44 + return mTransform;
1.45 + }
1.46 +
1.47 +private:
1.48 + bool IsConstructed()
1.49 + {
1.50 + return !!mSurface;
1.51 + }
1.52 +
1.53 + gfx::Matrix mTransform;
1.54 + RefPtr<gfx::SourceSurface> mSurface;
1.55 +
1.56 + AutoMoz2DMaskData(const AutoMoz2DMaskData&) MOZ_DELETE;
1.57 + AutoMoz2DMaskData& operator=(const AutoMoz2DMaskData&) MOZ_DELETE;
1.58 +};
1.59 +
1.60 +}
1.61 +}
1.62 +
1.63 +#endif // GFX_AUTOMASKDATA_H_
