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       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_PaintedLayerComposite_H
       7             : #define GFX_PaintedLayerComposite_H
       8             : 
       9             : #include "Layers.h"                     // for Layer (ptr only), etc
      10             : #include "mozilla/gfx/Rect.h"
      11             : #include "mozilla/Attributes.h"         // for override
      12             : #include "mozilla/RefPtr.h"             // for RefPtr
      13             : #include "mozilla/layers/LayerManagerComposite.h"  // for LayerComposite, etc
      14             : #include "mozilla/layers/LayersTypes.h"  // for LayerRenderState, etc
      15             : #include "nsDebug.h"                    // for NS_RUNTIMEABORT
      16             : #include "nsRegion.h"                   // for nsIntRegion
      17             : #include "nscore.h"                     // for nsACString
      18             : 
      19             : 
      20             : namespace mozilla {
      21             : namespace layers {
      22             : 
      23             : /**
      24             :  * PaintedLayers use ContentHosts for their compsositable host.
      25             :  * By using different ContentHosts, PaintedLayerComposite support tiled and
      26             :  * non-tiled PaintedLayers and single or double buffering.
      27             :  */
      28             : 
      29             : class CompositableHost;
      30             : class ContentHost;
      31             : 
      32             : class PaintedLayerComposite : public PaintedLayer,
      33             :                               public LayerComposite
      34             : {
      35             : public:
      36             :   explicit PaintedLayerComposite(LayerManagerComposite *aManager);
      37             : 
      38             : protected:
      39             :   virtual ~PaintedLayerComposite();
      40             : 
      41             : public:
      42             :   virtual void Disconnect() override;
      43             : 
      44             :   CompositableHost* GetCompositableHost() override;
      45             : 
      46             :   virtual void Destroy() override;
      47             : 
      48             :   virtual Layer* GetLayer() override;
      49             : 
      50             :   virtual void SetLayerManager(HostLayerManager* aManager) override;
      51             : 
      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             :   virtual bool SetCompositableHost(CompositableHost* aHost) override;
      60             : 
      61        2024 :   virtual HostLayer* AsHostLayer() override { return this; }
      62             : 
      63           0 :   virtual void InvalidateRegion(const nsIntRegion& aRegion) override
      64             :   {
      65           0 :     MOZ_CRASH("PaintedLayerComposites can't fill invalidated regions");
      66             :   }
      67             : 
      68             :   const virtual gfx::TiledIntRegion& GetInvalidRegion() override;
      69             : 
      70         251 :   MOZ_LAYER_DECL_NAME("PaintedLayerComposite", TYPE_PAINTED)
      71             : 
      72             : protected:
      73             : 
      74             :   virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
      75             : 
      76             : private:
      77          56 :   gfx::SamplingFilter GetSamplingFilter() { return gfx::SamplingFilter::LINEAR; }
      78             : 
      79             : private:
      80             :   RefPtr<ContentHost> mBuffer;
      81             : };
      82             : 
      83             : } // namespace layers
      84             : } // namespace mozilla
      85             : 
      86             : #endif /* GFX_PaintedLayerComposite_H */