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8 : * 1.1 (the "License"); you may not use this file except in compliance with
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21 : * Portions created by the Initial Developer are Copyright (C) 2010
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24 : * Contributor(s):
25 : * Chris Jones <jones.chris.g@gmail.com>
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40 :
41 : #ifndef mozilla_layers_ShadowLayersParent_h
42 : #define mozilla_layers_ShadowLayersParent_h
43 :
44 : #include "mozilla/layers/PLayersParent.h"
45 : #include "ShadowLayers.h"
46 : #include "ShadowLayersManager.h"
47 :
48 : namespace mozilla {
49 :
50 : namespace layout {
51 : class RenderFrameParent;
52 : }
53 :
54 : namespace layers {
55 :
56 : class Layer;
57 : class ShadowLayerManager;
58 :
59 : class ShadowLayersParent : public PLayersParent,
60 : public ISurfaceDeAllocator
61 : {
62 : typedef mozilla::layout::RenderFrameParent RenderFrameParent;
63 : typedef InfallibleTArray<Edit> EditArray;
64 : typedef InfallibleTArray<EditReply> EditReplyArray;
65 :
66 : public:
67 : ShadowLayersParent(ShadowLayerManager* aManager, ShadowLayersManager* aLayersManager);
68 : ~ShadowLayersParent();
69 :
70 : void Destroy();
71 :
72 0 : ShadowLayerManager* layer_manager() const { return mLayerManager; }
73 :
74 0 : ContainerLayer* GetRoot() const { return mRoot; }
75 :
76 : virtual void DestroySharedSurface(gfxSharedImageSurface* aSurface);
77 : virtual void DestroySharedSurface(SurfaceDescriptor* aSurface);
78 :
79 : protected:
80 : NS_OVERRIDE virtual bool RecvUpdate(const EditArray& cset,
81 : EditReplyArray* reply);
82 :
83 : NS_OVERRIDE virtual PLayerParent* AllocPLayer();
84 : NS_OVERRIDE virtual bool DeallocPLayer(PLayerParent* actor);
85 :
86 : private:
87 : nsRefPtr<ShadowLayerManager> mLayerManager;
88 : ShadowLayersManager* mShadowLayersManager;
89 : // Hold the root because it might be grafted under various
90 : // containers in the "real" layer tree
91 : nsRefPtr<ContainerLayer> mRoot;
92 : // When the widget/frame/browser stuff in this process begins its
93 : // destruction process, we need to Disconnect() all the currently
94 : // live shadow layers, because some of them might be orphaned from
95 : // the layer tree. This happens in Destroy() above. After we
96 : // Destroy() ourself, there's a window in which that information
97 : // hasn't yet propagated back to the child side and it might still
98 : // send us layer transactions. We want to ignore those transactions
99 : // because they refer to "zombie layers" on this side. So, we track
100 : // that state with |mDestroyed|. This is similar to, but separate
101 : // from, |mLayerManager->IsDestroyed()|; we might have had Destroy()
102 : // called on us but the mLayerManager might not be destroyed, or
103 : // vice versa. In both cases though, we want to ignore shadow-layer
104 : // transactions posted by the child.
105 : bool mDestroyed;
106 : };
107 :
108 : } // namespace layers
109 : } // namespace mozilla
110 :
111 : #endif // ifndef mozilla_layers_ShadowLayersParent_h
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