The Tor Browser: gfx/layers/basic/AutoMaskData.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef GFX_AUTOMASKDATA_H_

     7 #define GFX_AUTOMASKDATA_H_

     9 #include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor

    11 namespace mozilla {

    12 namespace layers {

    14 /**

    15  * Drawing with a mask requires a mask surface and a transform.

    16  *

    17  * This helper class manages the SourceSurface logic.

    18  */

    19 class MOZ_STACK_CLASS AutoMoz2DMaskData {

    20 public:

    21   AutoMoz2DMaskData() { }

    22   ~AutoMoz2DMaskData() { }

    24   void Construct(const gfx::Matrix& aTransform,

    25                  gfx::SourceSurface* aSurface)

    26   {

    27     MOZ_ASSERT(!IsConstructed());

    28     mTransform = aTransform;

    29     mSurface = aSurface;

    30   }

    32   gfx::SourceSurface* GetSurface()

    33   {

    34     MOZ_ASSERT(IsConstructed());

    35     return mSurface.get();

    36   }

    38   const gfx::Matrix& GetTransform()

    39   {

    40     MOZ_ASSERT(IsConstructed());

    41     return mTransform;

    42   }

    44 private:

    45   bool IsConstructed()

    46   {

    47     return !!mSurface;

    48   }

    50   gfx::Matrix mTransform;

    51   RefPtr<gfx::SourceSurface> mSurface;

    53   AutoMoz2DMaskData(const AutoMoz2DMaskData&) MOZ_DELETE;

    54   AutoMoz2DMaskData& operator=(const AutoMoz2DMaskData&) MOZ_DELETE;

    55 };

    57 }

    58 }

    60 #endif // GFX_AUTOMASKDATA_H_

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