forked from mirrors/gecko-dev
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_layout_RemoteLayerTreeOwner_h
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#define mozilla_layout_RemoteLayerTreeOwner_h
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#include "base/process.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/ipc/IdType.h"
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#include "mozilla/layers/CompositorOptions.h"
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#include "mozilla/layers/LayersTypes.h"
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#include "nsDisplayList.h"
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class nsFrameLoader;
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class nsSubDocumentFrame;
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namespace mozilla {
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namespace dom {
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class BrowserParent;
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} // namespace dom
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namespace layers {
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struct TextureFactoryIdentifier;
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} // namespace layers
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namespace layout {
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/**
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* RemoteLayerTreeOwner connects and manages layer trees for remote frames. It
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* is directly owned by a BrowserParent and always lives in the parent process.
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*/
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class RemoteLayerTreeOwner final {
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typedef mozilla::layers::CompositorOptions CompositorOptions;
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typedef mozilla::layers::LayerManager LayerManager;
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typedef mozilla::layers::LayersId LayersId;
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typedef mozilla::layers::TextureFactoryIdentifier TextureFactoryIdentifier;
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public:
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RemoteLayerTreeOwner();
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virtual ~RemoteLayerTreeOwner();
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bool Initialize(dom::BrowserParent* aBrowserParent);
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void Destroy();
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void EnsureLayersConnected(CompositorOptions* aCompositorOptions);
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bool AttachWindowRenderer();
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void OwnerContentChanged();
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LayersId GetLayersId() const { return mLayersId; }
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CompositorOptions GetCompositorOptions() const { return mCompositorOptions; }
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void GetTextureFactoryIdentifier(
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TextureFactoryIdentifier* aTextureFactoryIdentifier) const;
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bool IsInitialized() const { return mInitialized; }
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bool IsLayersConnected() const { return mLayersConnected; }
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private:
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// The process id of the remote frame. This is used by the compositor to
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// do security checks on incoming layer transactions.
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base::ProcessId mTabProcessId;
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// The layers id of the remote frame.
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LayersId mLayersId;
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// The compositor options for this layers id. This is only meaningful if
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// the compositor actually knows about this layers id (i.e. when
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// mLayersConnected is true).
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CompositorOptions mCompositorOptions;
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dom::BrowserParent* mBrowserParent;
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RefPtr<WindowRenderer> mWindowRenderer;
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bool mInitialized;
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// A flag that indicates whether or not the compositor knows about the
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// layers id. In some cases this RemoteLayerTreeOwner is not connected to the
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// compositor and so this flag is false.
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bool mLayersConnected;
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};
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} // namespace layout
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} // namespace mozilla
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#endif // mozilla_layout_RemoteLayerTreeOwner_h
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