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55c123d4d6
The mFrameMetrics.mZoom was previously a "resolution-independent" zoom, which meant it had to always be multiplied by the CalculateIntrinsicScale() value to be useful. This patch converts it to a "resolution-dependent" zoom, and includes the intrinsic scale multiplier already. This means it needs to be updated if either the viewport or composition bounds (which determine the intrinsic scale) change, but there are only a few places where this happens and it makes the rest of the code cleaner.
259 lines
8.5 KiB
C++
259 lines
8.5 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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/* 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_RenderFrameParent_h
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#define mozilla_layout_RenderFrameParent_h
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#include "mozilla/Attributes.h"
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#include <map>
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#include "mozilla/layout/PRenderFrameParent.h"
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#include "mozilla/layers/ShadowLayersManager.h"
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#include "nsDisplayList.h"
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#include "RenderFrameUtils.h"
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class nsContentView;
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class nsFrameLoader;
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class nsSubDocumentFrame;
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namespace mozilla {
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class InputEvent;
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namespace layers {
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class APZCTreeManager;
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class GestureEventListener;
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class TargetConfig;
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class LayerTransactionParent;
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struct TextureFactoryIdentifier;
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}
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namespace layout {
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class RemoteContentController;
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class RenderFrameParent : public PRenderFrameParent,
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public mozilla::layers::ShadowLayersManager
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{
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typedef mozilla::layers::FrameMetrics FrameMetrics;
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typedef mozilla::layers::ContainerLayer ContainerLayer;
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typedef mozilla::layers::Layer Layer;
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typedef mozilla::layers::LayerManager LayerManager;
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typedef mozilla::layers::TargetConfig TargetConfig;
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typedef mozilla::layers::LayerTransactionParent LayerTransactionParent;
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typedef mozilla::FrameLayerBuilder::ContainerParameters ContainerParameters;
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typedef mozilla::layers::TextureFactoryIdentifier TextureFactoryIdentifier;
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typedef FrameMetrics::ViewID ViewID;
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public:
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typedef std::map<ViewID, nsRefPtr<nsContentView> > ViewMap;
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/**
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* Select the desired scrolling behavior. If ASYNC_PAN_ZOOM is
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* chosen, then RenderFrameParent will watch input events and use
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* them to asynchronously pan and zoom.
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*/
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RenderFrameParent(nsFrameLoader* aFrameLoader,
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ScrollingBehavior aScrollingBehavior,
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TextureFactoryIdentifier* aTextureFactoryIdentifier,
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uint64_t* aId);
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virtual ~RenderFrameParent();
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void Destroy();
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/**
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* Helper function for getting a non-owning reference to a scrollable.
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* @param aId The ID of the frame.
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*/
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nsContentView* GetContentView(ViewID aId = FrameMetrics::ROOT_SCROLL_ID);
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void ContentViewScaleChanged(nsContentView* aView);
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virtual void ShadowLayersUpdated(LayerTransactionParent* aLayerTree,
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const TargetConfig& aTargetConfig,
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bool isFirstPaint) MOZ_OVERRIDE;
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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nsSubDocumentFrame* aFrame,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists);
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already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
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nsIFrame* aFrame,
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LayerManager* aManager,
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const nsIntRect& aVisibleRect,
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nsDisplayItem* aItem,
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const ContainerParameters& aContainerParameters);
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void OwnerContentChanged(nsIContent* aContent);
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void SetBackgroundColor(nscolor aColor) { mBackgroundColor = gfxRGBA(aColor); };
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void NotifyInputEvent(const nsInputEvent& aEvent,
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nsInputEvent* aOutEvent);
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void NotifyDimensionsChanged(ScreenIntSize size);
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void ZoomToRect(const CSSRect& aRect);
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void ContentReceivedTouch(bool aPreventDefault);
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void UpdateZoomConstraints(bool aAllowZoom,
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const CSSToScreenScale& aMinZoom,
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const CSSToScreenScale& aMaxZoom);
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void UpdateScrollOffset(uint32_t aPresShellId,
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ViewID aViewId,
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const CSSIntPoint& aScrollOffset);
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bool HitTest(const nsRect& aRect);
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protected:
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void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE;
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virtual bool RecvNotifyCompositorTransaction() MOZ_OVERRIDE;
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virtual bool RecvCancelDefaultPanZoom() MOZ_OVERRIDE;
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virtual bool RecvDetectScrollableSubframe() MOZ_OVERRIDE;
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virtual bool RecvUpdateHitRegion(const nsRegion& aRegion) MOZ_OVERRIDE;
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virtual PLayerTransactionParent* AllocPLayerTransactionParent() MOZ_OVERRIDE;
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virtual bool DeallocPLayerTransactionParent(PLayerTransactionParent* aLayers) MOZ_OVERRIDE;
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private:
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void BuildViewMap();
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void TriggerRepaint();
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void DispatchEventForPanZoomController(const InputEvent& aEvent);
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LayerTransactionParent* GetShadowLayers() const;
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uint64_t GetLayerTreeId() const;
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Layer* GetRootLayer() const;
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// When our child frame is pushing transactions directly to the
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// compositor, this is the ID of its layer tree in the compositor's
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// context.
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uint64_t mLayersId;
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nsRefPtr<nsFrameLoader> mFrameLoader;
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nsRefPtr<ContainerLayer> mContainer;
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// When our scrolling behavior is ASYNC_PAN_ZOOM, we have a nonnull
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// APZCTreeManager. It's used to manipulate the shadow layer tree
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// on the compositor thread.
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nsRefPtr<layers::APZCTreeManager> mApzcTreeManager;
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nsRefPtr<RemoteContentController> mContentController;
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layers::APZCTreeManager* GetApzcTreeManager();
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// This contains the views for all the scrollable frames currently in the
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// painted region of our remote content.
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ViewMap mContentViews;
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// True after Destroy() has been called, which is triggered
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// originally by nsFrameLoader::Destroy(). After this point, we can
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// no longer safely ask the frame loader to find its nearest layer
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// manager, because it may have been disconnected from the DOM.
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// It's still OK to *tell* the frame loader that we've painted after
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// it's destroyed; it'll just ignore us, and we won't be able to
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// find an nsIFrame to invalidate. See ShadowLayersUpdated().
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//
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// Prefer the extra bit of state to null'ing out mFrameLoader in
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// Destroy() so that less code needs to be special-cased for after
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// Destroy().
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//
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// It's possible for mFrameLoader==null and
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// mFrameLoaderDestroyed==false.
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bool mFrameLoaderDestroyed;
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// this is gfxRGBA because that's what ColorLayer wants.
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gfxRGBA mBackgroundColor;
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nsRegion mTouchRegion;
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};
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} // namespace layout
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} // namespace mozilla
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/**
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* A DisplayRemote exists solely to graft a child process's shadow
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* layer tree (for a given RenderFrameParent) into its parent
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* process's layer tree.
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*/
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class nsDisplayRemote : public nsDisplayItem
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{
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typedef mozilla::layout::RenderFrameParent RenderFrameParent;
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public:
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nsDisplayRemote(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
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RenderFrameParent* aRemoteFrame)
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: nsDisplayItem(aBuilder, aFrame)
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, mRemoteFrame(aRemoteFrame)
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{}
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virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager,
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const ContainerParameters& aParameters) MOZ_OVERRIDE
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{ return mozilla::LAYER_ACTIVE_FORCE; }
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virtual already_AddRefed<Layer>
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BuildLayer(nsDisplayListBuilder* aBuilder, LayerManager* aManager,
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const ContainerParameters& aContainerParameters) MOZ_OVERRIDE;
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void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
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HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) MOZ_OVERRIDE;
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NS_DISPLAY_DECL_NAME("Remote", TYPE_REMOTE)
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private:
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RenderFrameParent* mRemoteFrame;
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};
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/**
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* nsDisplayRemoteShadow is a way of adding display items for frames in a
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* separate process, for hit testing only. After being processed, the hit
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* test state will contain IDs for any remote frames that were hit.
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*
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* The frame should be its respective render frame parent.
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*/
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class nsDisplayRemoteShadow : public nsDisplayItem
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{
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typedef mozilla::layout::RenderFrameParent RenderFrameParent;
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typedef mozilla::layers::FrameMetrics::ViewID ViewID;
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public:
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nsDisplayRemoteShadow(nsDisplayListBuilder* aBuilder,
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nsIFrame* aFrame,
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nsRect aRect,
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ViewID aId)
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: nsDisplayItem(aBuilder, aFrame)
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, mRect(aRect)
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, mId(aId)
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{}
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nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) MOZ_OVERRIDE
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{
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*aSnap = false;
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return mRect;
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}
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virtual uint32_t GetPerFrameKey() MOZ_OVERRIDE
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{
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NS_ABORT();
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return 0;
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}
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void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
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HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) MOZ_OVERRIDE;
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NS_DISPLAY_DECL_NAME("Remote-Shadow", TYPE_REMOTE_SHADOW)
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private:
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nsRect mRect;
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ViewID mId;
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};
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#endif // mozilla_layout_RenderFrameParent_h
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