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       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_BASICCANVASLAYER_H
       7             : #define GFX_BASICCANVASLAYER_H
       8             : 
       9             : #include "BasicImplData.h"              // for BasicImplData
      10             : #include "BasicLayers.h"                // for BasicLayerManager
      11             : #include "CopyableCanvasLayer.h"        // for CopyableCanvasLayer
      12             : #include "Layers.h"                     // for CanvasLayer, etc
      13             : #include "nsDebug.h"                    // for NS_ASSERTION
      14             : #include "nsRegion.h"                   // for nsIntRegion
      15             : 
      16             : namespace mozilla {
      17             : namespace layers {
      18             : 
      19           0 : class BasicCanvasLayer : public CopyableCanvasLayer,
      20             :                          public BasicImplData
      21             : {
      22             : public:
      23           0 :   explicit BasicCanvasLayer(BasicLayerManager* aLayerManager) :
      24           0 :     CopyableCanvasLayer(aLayerManager, static_cast<BasicImplData*>(this))
      25           0 :   { }
      26             : 
      27           0 :   virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
      28             :   {
      29           0 :     NS_ASSERTION(BasicManager()->InConstruction(),
      30             :                  "Can only set properties in construction phase");
      31           0 :     CanvasLayer::SetVisibleRegion(aRegion);
      32           0 :   }
      33             : 
      34             :   virtual void Paint(gfx::DrawTarget* aDT,
      35             :                      const gfx::Point& aDeviceOffset,
      36             :                      Layer* aMaskLayer) override;
      37             : 
      38             : protected:
      39             : 
      40             :   already_AddRefed<gfx::SourceSurface> UpdateSurface();
      41             : 
      42           0 :   BasicLayerManager* BasicManager()
      43             :   {
      44           0 :     return static_cast<BasicLayerManager*>(mManager);
      45             :   }
      46             : };
      47             : 
      48             : } // namespace layers
      49             : } // namespace mozilla
      50             : 
      51             : #endif