1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/ipc/ShadowLayerParent.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,131 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * vim: sw=2 ts=8 et :
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#include "ShadowLayerParent.h"
1.12 +#include "Layers.h" // for Layer, ContainerLayer
1.13 +#include "nsDebug.h" // for NS_RUNTIMEABORT
1.14 +#include "nsISupportsImpl.h" // for Layer::AddRef, etc
1.15 +
1.16 +#include "mozilla/layers/ThebesLayerComposite.h"
1.17 +#include "mozilla/layers/CanvasLayerComposite.h"
1.18 +#include "mozilla/layers/ColorLayerComposite.h"
1.19 +#include "mozilla/layers/ImageLayerComposite.h"
1.20 +#include "mozilla/layers/ContainerLayerComposite.h"
1.21 +
1.22 +namespace mozilla {
1.23 +namespace layers {
1.24 +
1.25 +ShadowLayerParent::ShadowLayerParent() : mLayer(nullptr)
1.26 +{
1.27 +}
1.28 +
1.29 +ShadowLayerParent::~ShadowLayerParent()
1.30 +{
1.31 +}
1.32 +
1.33 +void
1.34 +ShadowLayerParent::Bind(Layer* layer)
1.35 +{
1.36 + mLayer = layer;
1.37 +}
1.38 +
1.39 +void
1.40 +ShadowLayerParent::Destroy()
1.41 +{
1.42 + // It's possible for Destroy() to come in just after this has been
1.43 + // created, but just before the transaction in which Bind() would
1.44 + // have been called. In that case, we'll ignore shadow-layers
1.45 + // transactions from there on and never get a layer here.
1.46 + if (mLayer) {
1.47 + mLayer->Disconnect();
1.48 + }
1.49 +}
1.50 +
1.51 +ContainerLayerComposite*
1.52 +ShadowLayerParent::AsContainerLayerComposite() const
1.53 +{
1.54 + return mLayer && mLayer->GetType() == Layer::TYPE_CONTAINER
1.55 + ? static_cast<ContainerLayerComposite*>(mLayer.get())
1.56 + : nullptr;
1.57 +}
1.58 +
1.59 +CanvasLayerComposite*
1.60 +ShadowLayerParent::AsCanvasLayerComposite() const
1.61 +{
1.62 + return mLayer && mLayer->GetType() == Layer::TYPE_CANVAS
1.63 + ? static_cast<CanvasLayerComposite*>(mLayer.get())
1.64 + : nullptr;
1.65 +}
1.66 +
1.67 +ColorLayerComposite*
1.68 +ShadowLayerParent::AsColorLayerComposite() const
1.69 +{
1.70 + return mLayer && mLayer->GetType() == Layer::TYPE_COLOR
1.71 + ? static_cast<ColorLayerComposite*>(mLayer.get())
1.72 + : nullptr;
1.73 +}
1.74 +
1.75 +ImageLayerComposite*
1.76 +ShadowLayerParent::AsImageLayerComposite() const
1.77 +{
1.78 + return mLayer && mLayer->GetType() == Layer::TYPE_IMAGE
1.79 + ? static_cast<ImageLayerComposite*>(mLayer.get())
1.80 + : nullptr;
1.81 +}
1.82 +
1.83 +RefLayerComposite*
1.84 +ShadowLayerParent::AsRefLayerComposite() const
1.85 +{
1.86 + return mLayer && mLayer->GetType() == Layer::TYPE_REF
1.87 + ? static_cast<RefLayerComposite*>(mLayer.get())
1.88 + : nullptr;
1.89 +}
1.90 +
1.91 +ThebesLayerComposite*
1.92 +ShadowLayerParent::AsThebesLayerComposite() const
1.93 +{
1.94 + return mLayer && mLayer->GetType() == Layer::TYPE_THEBES
1.95 + ? static_cast<ThebesLayerComposite*>(mLayer.get())
1.96 + : nullptr;
1.97 +}
1.98 +
1.99 +void
1.100 +ShadowLayerParent::ActorDestroy(ActorDestroyReason why)
1.101 +{
1.102 + switch (why) {
1.103 + case AncestorDeletion:
1.104 + NS_RUNTIMEABORT("shadow layer deleted out of order!");
1.105 + return; // unreached
1.106 +
1.107 + case Deletion:
1.108 + // See comment near Destroy() above.
1.109 + if (mLayer) {
1.110 + mLayer->Disconnect();
1.111 + }
1.112 + break;
1.113 +
1.114 + case AbnormalShutdown:
1.115 + if (mLayer) {
1.116 + mLayer->Disconnect();
1.117 + }
1.118 + break;
1.119 +
1.120 + case NormalShutdown:
1.121 + // let IPDL-generated code automatically clean up Shmems and so
1.122 + // forth; our channel is disconnected anyway
1.123 + break;
1.124 +
1.125 + case FailedConstructor:
1.126 + NS_RUNTIMEABORT("FailedConstructor isn't possible in PLayerTransaction");
1.127 + return; // unreached
1.128 + }
1.129 +
1.130 + mLayer = nullptr;
1.131 +}
1.132 +
1.133 +} // namespace layers
1.134 +} // namespace mozilla
