gecko/layout/ipc/RenderFrameParent.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_layout_RenderFrameParent_h
#define mozilla_layout_RenderFrameParent_h
#include "mozilla/Attributes.h"
#include <map>
#include "mozilla/layout/PRenderFrameParent.h"
#include "mozilla/layers/ShadowLayersManager.h"
#include "nsDisplayList.h"
#include "RenderFrameUtils.h"
class nsContentView;
class nsFrameLoader;
class nsSubDocumentFrame;
namespace mozilla {
class InputEvent;
namespace layers {
class APZCTreeManager;
class GestureEventListener;
class TargetConfig;
class LayerTransactionParent;
struct TextureFactoryIdentifier;
struct ScrollableLayerGuid;
}
namespace layout {
class RemoteContentController;
class RenderFrameParent : public PRenderFrameParent,
public mozilla::layers::ShadowLayersManager
{
typedef mozilla::layers::FrameMetrics FrameMetrics;
typedef mozilla::layers::ContainerLayer ContainerLayer;
typedef mozilla::layers::Layer Layer;
typedef mozilla::layers::LayerManager LayerManager;
typedef mozilla::layers::TargetConfig TargetConfig;
typedef mozilla::layers::LayerTransactionParent LayerTransactionParent;
typedef mozilla::ContainerLayerParameters ContainerLayerParameters;
typedef mozilla::layers::TextureFactoryIdentifier TextureFactoryIdentifier;
typedef mozilla::layers::ScrollableLayerGuid ScrollableLayerGuid;
typedef FrameMetrics::ViewID ViewID;
public:
typedef std::map<ViewID, nsRefPtr<nsContentView> > ViewMap;
/**
* Select the desired scrolling behavior. If ASYNC_PAN_ZOOM is
* chosen, then RenderFrameParent will watch input events and use
* them to asynchronously pan and zoom.
*/
RenderFrameParent(nsFrameLoader* aFrameLoader,
ScrollingBehavior aScrollingBehavior,
TextureFactoryIdentifier* aTextureFactoryIdentifier,
uint64_t* aId);
virtual ~RenderFrameParent();
void Destroy();
/**
* Helper functions for getting a non-owning reference to a scrollable.
* @param aId The ID of the frame.
*/
nsContentView* GetContentView(ViewID aId);
nsContentView* GetRootContentView();
void ContentViewScaleChanged(nsContentView* aView);
virtual void ShadowLayersUpdated(LayerTransactionParent* aLayerTree,
const TargetConfig& aTargetConfig,
bool isFirstPaint) MOZ_OVERRIDE;
void BuildDisplayList(nsDisplayListBuilder* aBuilder,
nsSubDocumentFrame* aFrame,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame,
LayerManager* aManager,
const nsIntRect& aVisibleRect,
nsDisplayItem* aItem,
const ContainerLayerParameters& aContainerParameters);
void OwnerContentChanged(nsIContent* aContent);
void SetBackgroundColor(nscolor aColor) { mBackgroundColor = gfxRGBA(aColor); };
/**
* Notify the APZ code of an input event, and get back the untransformed event.
* @param aOutTargetGuid An out-parameter that will contain the identifier
* of the APZC instance that handled the event, if one was found. This
* argument may be null.
* @param aOutEvent An out-parameter that contains aEvent with the async transforms
* unapplied. This can be passed to Gecko for hit testing and normal event
* dispatch. This argument may not be null.
*/
void NotifyInputEvent(const WidgetInputEvent& aEvent,
ScrollableLayerGuid* aOutTargetGuid,
WidgetInputEvent* aOutEvent);
void NotifyDimensionsChanged(ScreenIntSize size);
void ZoomToRect(uint32_t aPresShellId, ViewID aViewId, const CSSRect& aRect);
void ContentReceivedTouch(const ScrollableLayerGuid& aGuid,
bool aPreventDefault);
void UpdateZoomConstraints(uint32_t aPresShellId,
ViewID aViewId,
bool aIsRoot,
bool aAllowZoom,
const CSSToScreenScale& aMinZoom,
const CSSToScreenScale& aMaxZoom);
void UpdateScrollOffset(uint32_t aPresShellId,
ViewID aViewId,
const CSSIntPoint& aScrollOffset);
bool HitTest(const nsRect& aRect);
protected:
void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE;
virtual bool RecvNotifyCompositorTransaction() MOZ_OVERRIDE;
virtual bool RecvUpdateHitRegion(const nsRegion& aRegion) MOZ_OVERRIDE;
virtual PLayerTransactionParent* AllocPLayerTransactionParent() MOZ_OVERRIDE;
virtual bool DeallocPLayerTransactionParent(PLayerTransactionParent* aLayers) MOZ_OVERRIDE;
private:
void BuildViewMap();
void TriggerRepaint();
void DispatchEventForPanZoomController(const InputEvent& aEvent);
LayerTransactionParent* GetShadowLayers() const;
uint64_t GetLayerTreeId() const;
Layer* GetRootLayer() const;
// When our child frame is pushing transactions directly to the
// compositor, this is the ID of its layer tree in the compositor's
// context.
uint64_t mLayersId;
nsRefPtr<nsFrameLoader> mFrameLoader;
nsRefPtr<ContainerLayer> mContainer;
// When our scrolling behavior is ASYNC_PAN_ZOOM, we have a nonnull
// APZCTreeManager. It's used to manipulate the shadow layer tree
// on the compositor thread.
nsRefPtr<layers::APZCTreeManager> mApzcTreeManager;
nsRefPtr<RemoteContentController> mContentController;
layers::APZCTreeManager* GetApzcTreeManager();
// This contains the views for all the scrollable frames currently in the
// painted region of our remote content.
ViewMap mContentViews;
// True after Destroy() has been called, which is triggered
// originally by nsFrameLoader::Destroy(). After this point, we can
// no longer safely ask the frame loader to find its nearest layer
// manager, because it may have been disconnected from the DOM.
// It's still OK to *tell* the frame loader that we've painted after
// it's destroyed; it'll just ignore us, and we won't be able to
// find an nsIFrame to invalidate. See ShadowLayersUpdated().
//
// Prefer the extra bit of state to null'ing out mFrameLoader in
// Destroy() so that less code needs to be special-cased for after
// Destroy().
//
// It's possible for mFrameLoader==null and
// mFrameLoaderDestroyed==false.
bool mFrameLoaderDestroyed;
// this is gfxRGBA because that's what ColorLayer wants.
gfxRGBA mBackgroundColor;
nsRegion mTouchRegion;
};
} // namespace layout
} // namespace mozilla
/**
* A DisplayRemote exists solely to graft a child process's shadow
* layer tree (for a given RenderFrameParent) into its parent
* process's layer tree.
*/
class nsDisplayRemote : public nsDisplayItem
{
typedef mozilla::layout::RenderFrameParent RenderFrameParent;
public:
nsDisplayRemote(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
RenderFrameParent* aRemoteFrame)
: nsDisplayItem(aBuilder, aFrame)
, mRemoteFrame(aRemoteFrame)
{}
virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
LayerManager* aManager,
const ContainerLayerParameters& aParameters) MOZ_OVERRIDE
{ return mozilla::LAYER_ACTIVE_FORCE; }
virtual already_AddRefed<Layer>
BuildLayer(nsDisplayListBuilder* aBuilder, LayerManager* aManager,
const ContainerLayerParameters& aContainerParameters) MOZ_OVERRIDE;
void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) MOZ_OVERRIDE;
NS_DISPLAY_DECL_NAME("Remote", TYPE_REMOTE)
private:
RenderFrameParent* mRemoteFrame;
};
/**
* nsDisplayRemoteShadow is a way of adding display items for frames in a
* separate process, for hit testing only. After being processed, the hit
* test state will contain IDs for any remote frames that were hit.
*
* The frame should be its respective render frame parent.
*/
class nsDisplayRemoteShadow : public nsDisplayItem
{
typedef mozilla::layout::RenderFrameParent RenderFrameParent;
typedef mozilla::layers::FrameMetrics::ViewID ViewID;
public:
nsDisplayRemoteShadow(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame,
nsRect aRect,
ViewID aId)
: nsDisplayItem(aBuilder, aFrame)
, mRect(aRect)
, mId(aId)
{}
nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) MOZ_OVERRIDE
{
*aSnap = false;
return mRect;
}
virtual uint32_t GetPerFrameKey() MOZ_OVERRIDE
{
NS_ABORT();
return 0;
}
void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) MOZ_OVERRIDE;
NS_DISPLAY_DECL_NAME("Remote-Shadow", TYPE_REMOTE_SHADOW)
private:
nsRect mRect;
ViewID mId;
};
#endif // mozilla_layout_RenderFrameParent_h