gecko/gfx/layers/ipc/ShadowLayerParent.cpp

109 lines
3.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Code.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Jones <jones.chris.g@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "ShadowLayersParent.h"
#include "ShadowLayerParent.h"
#include "ShadowLayers.h"
#include "BasicLayers.h"
namespace mozilla {
namespace layers {
ShadowLayerParent::ShadowLayerParent() : mLayer(NULL)
{
}
ShadowLayerParent::~ShadowLayerParent()
{
}
void
ShadowLayerParent::Bind(Layer* layer)
{
mLayer = layer;
}
void
ShadowLayerParent::Destroy()
{
// It's possible for Destroy() to come in just after this has been
// created, but just before the transaction in which Bind() would
// have been called. In that case, we'll ignore shadow-layers
// transactions from there on and never get a layer here.
if (mLayer) {
mLayer->Disconnect();
}
}
ContainerLayer*
ShadowLayerParent::AsContainer() const
{
return static_cast<ContainerLayer*>(AsLayer());
}
void
ShadowLayerParent::ActorDestroy(ActorDestroyReason why)
{
switch (why) {
case AncestorDeletion:
NS_RUNTIMEABORT("shadow layer deleted out of order!");
return; // unreached
case Deletion:
// See comment near Destroy() above.
if (mLayer) {
mLayer->Disconnect();
}
break;
case AbnormalShutdown:
case NormalShutdown:
// let IPDL-generated code automatically clean up Shmems and so
// forth; our channel is disconnected anyway
break;
}
mLayer = NULL;
}
} // namespace layers
} // namespace mozilla