Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 20; 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_CanvasLayerComposite_H
       7             : #define GFX_CanvasLayerComposite_H
       8             : 
       9             : #include "Layers.h"                     // for CanvasLayer, etc
      10             : #include "mozilla/Attributes.h"         // for override
      11             : #include "mozilla/RefPtr.h"             // for RefPtr
      12             : #include "mozilla/layers/LayerManagerComposite.h"  // for LayerComposite, etc
      13             : #include "mozilla/layers/LayersTypes.h"  // for LayerRenderState, etc
      14             : #include "nsDebug.h"                    // for NS_RUNTIMEABORT
      15             : #include "nsRect.h"                     // for mozilla::gfx::IntRect
      16             : #include "nscore.h"                     // for nsACString
      17             : 
      18             : namespace mozilla {
      19             : namespace layers {
      20             : 
      21             : class CompositableHost;
      22             : // Canvas layers use ImageHosts (but CanvasClients) because compositing a
      23             : // canvas is identical to compositing an image.
      24             : class ImageHost;
      25             : 
      26             : class CanvasLayerComposite : public CanvasLayer,
      27             :                              public LayerComposite
      28             : {
      29             : public:
      30             :   explicit CanvasLayerComposite(LayerManagerComposite* aManager);
      31             : 
      32             : protected:
      33             :   virtual ~CanvasLayerComposite();
      34             : 
      35             : public:
      36             :   // CanvasLayer impl
      37           0 :   virtual void Initialize(const Data& aData) override
      38             :   {
      39           0 :     MOZ_CRASH("Incompatibe surface type");
      40             :   }
      41             : 
      42             :   virtual bool SetCompositableHost(CompositableHost* aHost) override;
      43             : 
      44           0 :   virtual void Disconnect() override
      45             :   {
      46           0 :     Destroy();
      47           0 :   }
      48             : 
      49             :   virtual void SetLayerManager(HostLayerManager* aManager) override;
      50             : 
      51             :   virtual Layer* GetLayer() override;
      52             :   virtual void RenderLayer(const gfx::IntRect& aClipRect,
      53             :                            const Maybe<gfx::Polygon>& aGeometry) override;
      54             : 
      55             :   virtual void CleanupResources() override;
      56             : 
      57             :   virtual void GenEffectChain(EffectChain& aEffect) override;
      58             : 
      59             :   CompositableHost* GetCompositableHost() override;
      60             : 
      61           0 :   virtual HostLayer* AsHostLayer() override { return this; }
      62             : 
      63           0 :   virtual const char* Name() const override { return "CanvasLayerComposite"; }
      64             : 
      65             : protected:
      66             :   virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
      67             : 
      68             : private:
      69             :   gfx::SamplingFilter GetSamplingFilter();
      70             : 
      71             : private:
      72             :   RefPtr<CompositableHost> mCompositableHost;
      73             : };
      74             : 
      75             : } // namespace layers
      76             : } // namespace mozilla
      77             : 
      78             : #endif /* GFX_CanvasLayerComposite_H */