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109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: sw=4 ts=8 et :
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Code.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Jones <jones.chris.g@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef dom_plugins_PluginBackgroundDestroyer
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#define dom_plugins_PluginBackgroundDestroyer
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#include "mozilla/plugins/PPluginBackgroundDestroyerChild.h"
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#include "mozilla/plugins/PPluginBackgroundDestroyerParent.h"
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#include "gfxASurface.h"
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#include "gfxSharedImageSurface.h"
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namespace mozilla {
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namespace plugins {
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/**
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* When instances of this class are destroyed, the old background goes
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* along with them, completing the destruction process (whether or not
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* the plugin stayed alive long enough to ack).
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*/
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class PluginBackgroundDestroyerParent : public PPluginBackgroundDestroyerParent {
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public:
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PluginBackgroundDestroyerParent(gfxASurface* aDyingBackground)
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: mDyingBackground(aDyingBackground)
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{ }
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virtual ~PluginBackgroundDestroyerParent() { }
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private:
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NS_OVERRIDE
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virtual void ActorDestroy(ActorDestroyReason why)
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{
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switch(why) {
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case Deletion:
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case AncestorDeletion:
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if (gfxSharedImageSurface::IsSharedImage(mDyingBackground)) {
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gfxSharedImageSurface* s =
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static_cast<gfxSharedImageSurface*>(mDyingBackground.get());
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DeallocShmem(s->GetShmem());
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}
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break;
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default:
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// We're shutting down or crashed, let automatic cleanup
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// take care of our shmem, if we have one.
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break;
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}
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}
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nsRefPtr<gfxASurface> mDyingBackground;
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};
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/**
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* This class exists solely to instruct its instance to release its
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* current background, a new one may be coming.
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*/
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class PluginBackgroundDestroyerChild : public PPluginBackgroundDestroyerChild {
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public:
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PluginBackgroundDestroyerChild() { }
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virtual ~PluginBackgroundDestroyerChild() { }
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private:
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// Implementing this for good hygiene.
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NS_OVERRIDE
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virtual void ActorDestroy(ActorDestroyReason why)
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{ }
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};
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} // namespace plugins
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} // namespace mozilla
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#endif // dom_plugins_PluginBackgroundDestroyer
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