139 lines
3.4 KiB
C++
139 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ShadowLayerParent.h"
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#include "Layers.h" // for Layer, ContainerLayer
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#include "nsDebug.h" // for NS_RUNTIMEABORT
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#include "nsISupportsImpl.h" // for Layer::AddRef, etc
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#include "mozilla/layers/PaintedLayerComposite.h"
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#include "mozilla/layers/CanvasLayerComposite.h"
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#include "mozilla/layers/ColorLayerComposite.h"
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#include "mozilla/layers/ImageLayerComposite.h"
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#include "mozilla/layers/ContainerLayerComposite.h"
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namespace mozilla {
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namespace layers {
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ShadowLayerParent::ShadowLayerParent() : mLayer(nullptr)
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{
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}
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ShadowLayerParent::~ShadowLayerParent()
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{
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Disconnect();
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}
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void
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ShadowLayerParent::Disconnect()
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{
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if (mLayer) {
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mLayer->Disconnect();
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mLayer = nullptr;
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}
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}
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void
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ShadowLayerParent::Bind(Layer* layer)
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{
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if (mLayer != layer) {
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Disconnect();
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mLayer = layer;
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}
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}
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void
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ShadowLayerParent::Destroy()
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{
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// It's possible for Destroy() to come in just after this has been
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// created, but just before the transaction in which Bind() would
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// have been called. In that case, we'll ignore shadow-layers
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// transactions from there on and never get a layer here.
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Disconnect();
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}
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ContainerLayerComposite*
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ShadowLayerParent::AsContainerLayerComposite() const
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{
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return mLayer && mLayer->GetType() == Layer::TYPE_CONTAINER
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? static_cast<ContainerLayerComposite*>(mLayer.get())
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: nullptr;
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}
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CanvasLayerComposite*
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ShadowLayerParent::AsCanvasLayerComposite() const
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{
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return mLayer && mLayer->GetType() == Layer::TYPE_CANVAS
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? static_cast<CanvasLayerComposite*>(mLayer.get())
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: nullptr;
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}
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ColorLayerComposite*
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ShadowLayerParent::AsColorLayerComposite() const
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{
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return mLayer && mLayer->GetType() == Layer::TYPE_COLOR
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? static_cast<ColorLayerComposite*>(mLayer.get())
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: nullptr;
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}
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ImageLayerComposite*
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ShadowLayerParent::AsImageLayerComposite() const
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{
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return mLayer && mLayer->GetType() == Layer::TYPE_IMAGE
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? static_cast<ImageLayerComposite*>(mLayer.get())
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: nullptr;
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}
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RefLayerComposite*
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ShadowLayerParent::AsRefLayerComposite() const
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{
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return mLayer && mLayer->GetType() == Layer::TYPE_REF
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? static_cast<RefLayerComposite*>(mLayer.get())
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: nullptr;
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}
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PaintedLayerComposite*
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ShadowLayerParent::AsPaintedLayerComposite() const
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{
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return mLayer && mLayer->GetType() == Layer::TYPE_PAINTED
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? static_cast<PaintedLayerComposite*>(mLayer.get())
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: nullptr;
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}
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void
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ShadowLayerParent::ActorDestroy(ActorDestroyReason why)
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{
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switch (why) {
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case AncestorDeletion:
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NS_RUNTIMEABORT("shadow layer deleted out of order!");
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return; // unreached
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case Deletion:
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// See comment near Destroy() above.
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Disconnect();
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break;
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case AbnormalShutdown:
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Disconnect();
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break;
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case NormalShutdown:
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// let IPDL-generated code automatically clean up Shmems and so
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// forth; our channel is disconnected anyway
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break;
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case FailedConstructor:
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NS_RUNTIMEABORT("FailedConstructor isn't possible in PLayerTransaction");
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return; // unreached
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}
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mLayer = nullptr;
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}
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} // namespace layers
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} // namespace mozilla
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