gecko/gfx/layers/ipc/ShadowLayersParent.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
2012-05-21 04:12:37 -07:00
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_layers_ShadowLayersParent_h
#define mozilla_layers_ShadowLayersParent_h
#include "mozilla/layers/PLayersParent.h"
#include "ShadowLayers.h"
#include "ShadowLayersManager.h"
namespace mozilla {
namespace layout {
class RenderFrameParent;
}
namespace layers {
class Layer;
class ShadowLayerManager;
class ShadowLayersParent : public PLayersParent,
public ISurfaceDeAllocator
{
typedef mozilla::layout::RenderFrameParent RenderFrameParent;
typedef InfallibleTArray<Edit> EditArray;
typedef InfallibleTArray<EditReply> EditReplyArray;
public:
ShadowLayersParent(ShadowLayerManager* aManager,
ShadowLayersManager* aLayersManager,
uint64_t aId);
~ShadowLayersParent();
void Destroy();
ShadowLayerManager* layer_manager() const { return mLayerManager; }
uint64_t GetId() const { return mId; }
ContainerLayer* GetRoot() const { return mRoot; }
virtual void DestroySharedSurface(gfxSharedImageSurface* aSurface);
virtual void DestroySharedSurface(SurfaceDescriptor* aSurface);
protected:
virtual bool RecvUpdate(const EditArray& cset,
const TargetConfig& targetConfig,
const bool& isFirstPaint,
EditReplyArray* reply) MOZ_OVERRIDE;
virtual bool RecvDrawToSurface(const SurfaceDescriptor& surfaceIn,
SurfaceDescriptor* surfaceOut) MOZ_OVERRIDE;
virtual bool RecvUpdateNoSwap(const EditArray& cset,
const TargetConfig& targetConfig,
const bool& isFirstPaint) MOZ_OVERRIDE;
virtual PGrallocBufferParent*
AllocPGrallocBuffer(const gfxIntSize& aSize, const gfxContentType& aContent,
MaybeMagicGrallocBufferHandle* aOutHandle) MOZ_OVERRIDE;
virtual bool
DeallocPGrallocBuffer(PGrallocBufferParent* actor) MOZ_OVERRIDE;
virtual PLayerParent* AllocPLayer() MOZ_OVERRIDE;
virtual bool DeallocPLayer(PLayerParent* actor) MOZ_OVERRIDE;
private:
nsRefPtr<ShadowLayerManager> mLayerManager;
ShadowLayersManager* mShadowLayersManager;
// Hold the root because it might be grafted under various
// containers in the "real" layer tree
nsRefPtr<ContainerLayer> mRoot;
// When this is nonzero, it refers to a layer tree owned by the
// compositor thread. It is always true that
// mId != 0 => mRoot == null
// because the "real tree" is owned by the compositor.
uint64_t mId;
// When the widget/frame/browser stuff in this process begins its
// destruction process, we need to Disconnect() all the currently
// live shadow layers, because some of them might be orphaned from
// the layer tree. This happens in Destroy() above. After we
// Destroy() ourself, there's a window in which that information
// hasn't yet propagated back to the child side and it might still
// send us layer transactions. We want to ignore those transactions
// because they refer to "zombie layers" on this side. So, we track
// that state with |mDestroyed|. This is similar to, but separate
// from, |mLayerManager->IsDestroyed()|; we might have had Destroy()
// called on us but the mLayerManager might not be destroyed, or
// vice versa. In both cases though, we want to ignore shadow-layer
// transactions posted by the child.
bool mDestroyed;
};
} // namespace layers
} // namespace mozilla
#endif // ifndef mozilla_layers_ShadowLayersParent_h