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112 lines
4.1 KiB
C++
112 lines
4.1 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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/* ***** 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 mozilla_layers_ShadowLayersParent_h
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#define mozilla_layers_ShadowLayersParent_h
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#include "mozilla/layers/PLayersParent.h"
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#include "ShadowLayers.h"
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namespace mozilla {
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namespace layout {
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class RenderFrameParent;
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}
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namespace layers {
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class Layer;
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class ShadowLayerManager;
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class ShadowLayersParent : public PLayersParent,
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public ISurfaceDeAllocator
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{
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typedef mozilla::layout::RenderFrameParent RenderFrameParent;
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typedef InfallibleTArray<Edit> EditArray;
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typedef InfallibleTArray<EditReply> EditReplyArray;
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public:
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ShadowLayersParent(ShadowLayerManager* aManager);
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~ShadowLayersParent();
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void Destroy();
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ShadowLayerManager* layer_manager() const { return mLayerManager; }
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ContainerLayer* GetRoot() const { return mRoot; }
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virtual void DestroySharedSurface(gfxSharedImageSurface* aSurface);
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virtual void DestroySharedSurface(SurfaceDescriptor* aSurface);
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protected:
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NS_OVERRIDE virtual bool RecvUpdate(const EditArray& cset,
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EditReplyArray* reply);
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NS_OVERRIDE virtual PLayerParent* AllocPLayer();
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NS_OVERRIDE virtual bool DeallocPLayer(PLayerParent* actor);
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private:
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RenderFrameParent* Frame();
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nsRefPtr<ShadowLayerManager> mLayerManager;
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// Hold the root because it might be grafted under various
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// containers in the "real" layer tree
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nsRefPtr<ContainerLayer> mRoot;
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// When the widget/frame/browser stuff in this process begins its
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// destruction process, we need to Disconnect() all the currently
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// live shadow layers, because some of them might be orphaned from
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// the layer tree. This happens in Destroy() above. After we
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// Destroy() ourself, there's a window in which that information
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// hasn't yet propagated back to the child side and it might still
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// send us layer transactions. We want to ignore those transactions
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// because they refer to "zombie layers" on this side. So, we track
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// that state with |mDestroyed|. This is similar to, but separate
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// from, |mLayerManager->IsDestroyed()|; we might have had Destroy()
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// called on us but the mLayerManager might not be destroyed, or
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// vice versa. In both cases though, we want to ignore shadow-layer
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// transactions posted by the child.
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bool mDestroyed;
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};
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} // namespace layers
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} // namespace mozilla
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#endif // ifndef mozilla_layers_ShadowLayersParent_h
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