The Tor Browser / file comparison
comparison: gfx/layers/ipc/ShadowLayerParent.cpp
gfx/layers/ipc/ShadowLayerParent.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:2d03a3465a2d |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * vim: sw=2 ts=8 et : | |
| 3 */ | |
| 4 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #include "ShadowLayerParent.h" | |
| 9 #include "Layers.h" // for Layer, ContainerLayer | |
| 10 #include "nsDebug.h" // for NS_RUNTIMEABORT | |
| 11 #include "nsISupportsImpl.h" // for Layer::AddRef, etc | |
| 12 | |
| 13 #include "mozilla/layers/ThebesLayerComposite.h" | |
| 14 #include "mozilla/layers/CanvasLayerComposite.h" | |
| 15 #include "mozilla/layers/ColorLayerComposite.h" | |
| 16 #include "mozilla/layers/ImageLayerComposite.h" | |
| 17 #include "mozilla/layers/ContainerLayerComposite.h" | |
| 18 | |
| 19 namespace mozilla { | |
| 20 namespace layers { | |
| 21 | |
| 22 ShadowLayerParent::ShadowLayerParent() : mLayer(nullptr) | |
| 23 { | |
| 24 } | |
| 25 | |
| 26 ShadowLayerParent::~ShadowLayerParent() | |
| 27 { | |
| 28 } | |
| 29 | |
| 30 void | |
| 31 ShadowLayerParent::Bind(Layer* layer) | |
| 32 { | |
| 33 mLayer = layer; | |
| 34 } | |
| 35 | |
| 36 void | |
| 37 ShadowLayerParent::Destroy() | |
| 38 { | |
| 39 // It's possible for Destroy() to come in just after this has been | |
| 40 // created, but just before the transaction in which Bind() would | |
| 41 // have been called. In that case, we'll ignore shadow-layers | |
| 42 // transactions from there on and never get a layer here. | |
| 43 if (mLayer) { | |
| 44 mLayer->Disconnect(); | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 ContainerLayerComposite* | |
| 49 ShadowLayerParent::AsContainerLayerComposite() const | |
| 50 { | |
| 51 return mLayer && mLayer->GetType() == Layer::TYPE_CONTAINER | |
| 52 ? static_cast<ContainerLayerComposite*>(mLayer.get()) | |
| 53 : nullptr; | |
| 54 } | |
| 55 | |
| 56 CanvasLayerComposite* | |
| 57 ShadowLayerParent::AsCanvasLayerComposite() const | |
| 58 { | |
| 59 return mLayer && mLayer->GetType() == Layer::TYPE_CANVAS | |
| 60 ? static_cast<CanvasLayerComposite*>(mLayer.get()) | |
| 61 : nullptr; | |
| 62 } | |
| 63 | |
| 64 ColorLayerComposite* | |
| 65 ShadowLayerParent::AsColorLayerComposite() const | |
| 66 { | |
| 67 return mLayer && mLayer->GetType() == Layer::TYPE_COLOR | |
| 68 ? static_cast<ColorLayerComposite*>(mLayer.get()) | |
| 69 : nullptr; | |
| 70 } | |
| 71 | |
| 72 ImageLayerComposite* | |
| 73 ShadowLayerParent::AsImageLayerComposite() const | |
| 74 { | |
| 75 return mLayer && mLayer->GetType() == Layer::TYPE_IMAGE | |
| 76 ? static_cast<ImageLayerComposite*>(mLayer.get()) | |
| 77 : nullptr; | |
| 78 } | |
| 79 | |
| 80 RefLayerComposite* | |
| 81 ShadowLayerParent::AsRefLayerComposite() const | |
| 82 { | |
| 83 return mLayer && mLayer->GetType() == Layer::TYPE_REF | |
| 84 ? static_cast<RefLayerComposite*>(mLayer.get()) | |
| 85 : nullptr; | |
| 86 } | |
| 87 | |
| 88 ThebesLayerComposite* | |
| 89 ShadowLayerParent::AsThebesLayerComposite() const | |
| 90 { | |
| 91 return mLayer && mLayer->GetType() == Layer::TYPE_THEBES | |
| 92 ? static_cast<ThebesLayerComposite*>(mLayer.get()) | |
| 93 : nullptr; | |
| 94 } | |
| 95 | |
| 96 void | |
| 97 ShadowLayerParent::ActorDestroy(ActorDestroyReason why) | |
| 98 { | |
| 99 switch (why) { | |
| 100 case AncestorDeletion: | |
| 101 NS_RUNTIMEABORT("shadow layer deleted out of order!"); | |
| 102 return; // unreached | |
| 103 | |
| 104 case Deletion: | |
| 105 // See comment near Destroy() above. | |
| 106 if (mLayer) { | |
| 107 mLayer->Disconnect(); | |
| 108 } | |
| 109 break; | |
| 110 | |
| 111 case AbnormalShutdown: | |
| 112 if (mLayer) { | |
| 113 mLayer->Disconnect(); | |
| 114 } | |
| 115 break; | |
| 116 | |
| 117 case NormalShutdown: | |
| 118 // let IPDL-generated code automatically clean up Shmems and so | |
| 119 // forth; our channel is disconnected anyway | |
| 120 break; | |
| 121 | |
| 122 case FailedConstructor: | |
| 123 NS_RUNTIMEABORT("FailedConstructor isn't possible in PLayerTransaction"); | |
| 124 return; // unreached | |
| 125 } | |
| 126 | |
| 127 mLayer = nullptr; | |
| 128 } | |
| 129 | |
| 130 } // namespace layers | |
| 131 } // namespace mozilla |
