Line data    Source code

       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/. */
       5             : 
       6             : #ifndef GFX_AUTOMASKDATA_H_
       7             : #define GFX_AUTOMASKDATA_H_
       8             : 
       9             : #include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor
      10             : 
      11             : namespace mozilla {
      12             : namespace layers {
      13             : 
      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           0 :   AutoMoz2DMaskData() { }
      22           0 :   ~AutoMoz2DMaskData() { }
      23             : 
      24           0 :   void Construct(const gfx::Matrix& aTransform,
      25             :                  gfx::SourceSurface* aSurface)
      26             :   {
      27           0 :     MOZ_ASSERT(!IsConstructed());
      28           0 :     mTransform = aTransform;
      29           0 :     mSurface = aSurface;
      30           0 :   }
      31             : 
      32           0 :   gfx::SourceSurface* GetSurface()
      33             :   {
      34           0 :     MOZ_ASSERT(IsConstructed());
      35           0 :     return mSurface.get();
      36             :   }
      37             : 
      38           0 :   const gfx::Matrix& GetTransform()
      39             :   {
      40           0 :     MOZ_ASSERT(IsConstructed());
      41           0 :     return mTransform;
      42             :   }
      43             : 
      44             : private:
      45           0 :   bool IsConstructed()
      46             :   {
      47           0 :     return !!mSurface;
      48             :   }
      49             : 
      50             :   gfx::Matrix mTransform;
      51             :   RefPtr<gfx::SourceSurface> mSurface;
      52             : 
      53             :   AutoMoz2DMaskData(const AutoMoz2DMaskData&) = delete;
      54             :   AutoMoz2DMaskData& operator=(const AutoMoz2DMaskData&) = delete;
      55             : };
      56             : 
      57             : } // namespace layers
      58             : } // namespace mozilla
      59             : 
      60             : #endif // GFX_AUTOMASKDATA_H_