1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/ipc/RenderFrameParent.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,269 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * vim: sw=2 ts=8 et :
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#ifndef mozilla_layout_RenderFrameParent_h
1.12 +#define mozilla_layout_RenderFrameParent_h
1.13 +
1.14 +#include "mozilla/Attributes.h"
1.15 +#include <map>
1.16 +
1.17 +#include "mozilla/layout/PRenderFrameParent.h"
1.18 +#include "mozilla/layers/ShadowLayersManager.h"
1.19 +#include "nsDisplayList.h"
1.20 +#include "RenderFrameUtils.h"
1.21 +
1.22 +class nsContentView;
1.23 +class nsFrameLoader;
1.24 +class nsSubDocumentFrame;
1.25 +
1.26 +namespace mozilla {
1.27 +
1.28 +class InputEvent;
1.29 +
1.30 +namespace layers {
1.31 +class APZCTreeManager;
1.32 +class GestureEventListener;
1.33 +class TargetConfig;
1.34 +class LayerTransactionParent;
1.35 +struct TextureFactoryIdentifier;
1.36 +struct ScrollableLayerGuid;
1.37 +}
1.38 +
1.39 +namespace layout {
1.40 +
1.41 +class RemoteContentController;
1.42 +
1.43 +class RenderFrameParent : public PRenderFrameParent,
1.44 + public mozilla::layers::ShadowLayersManager
1.45 +{
1.46 + typedef mozilla::layers::FrameMetrics FrameMetrics;
1.47 + typedef mozilla::layers::ContainerLayer ContainerLayer;
1.48 + typedef mozilla::layers::Layer Layer;
1.49 + typedef mozilla::layers::LayerManager LayerManager;
1.50 + typedef mozilla::layers::TargetConfig TargetConfig;
1.51 + typedef mozilla::layers::LayerTransactionParent LayerTransactionParent;
1.52 + typedef mozilla::ContainerLayerParameters ContainerLayerParameters;
1.53 + typedef mozilla::layers::TextureFactoryIdentifier TextureFactoryIdentifier;
1.54 + typedef mozilla::layers::ScrollableLayerGuid ScrollableLayerGuid;
1.55 + typedef mozilla::layers::ZoomConstraints ZoomConstraints;
1.56 + typedef FrameMetrics::ViewID ViewID;
1.57 +
1.58 +public:
1.59 + typedef std::map<ViewID, nsRefPtr<nsContentView> > ViewMap;
1.60 +
1.61 + /* Init should be called immediately after allocation. */
1.62 + RenderFrameParent();
1.63 + virtual ~RenderFrameParent();
1.64 +
1.65 + /**
1.66 + * Select the desired scrolling behavior. If ASYNC_PAN_ZOOM is
1.67 + * chosen, then RenderFrameParent will watch input events and use
1.68 + * them to asynchronously pan and zoom.
1.69 + */
1.70 + void
1.71 + Init(nsFrameLoader* aFrameLoader,
1.72 + ScrollingBehavior aScrollingBehavior,
1.73 + TextureFactoryIdentifier* aTextureFactoryIdentifier,
1.74 + uint64_t* aId);
1.75 +
1.76 + void Destroy();
1.77 +
1.78 + /**
1.79 + * Helper functions for getting a non-owning reference to a scrollable.
1.80 + * @param aId The ID of the frame.
1.81 + */
1.82 + nsContentView* GetContentView(ViewID aId);
1.83 + nsContentView* GetRootContentView();
1.84 +
1.85 + void ContentViewScaleChanged(nsContentView* aView);
1.86 +
1.87 + virtual void ShadowLayersUpdated(LayerTransactionParent* aLayerTree,
1.88 + const TargetConfig& aTargetConfig,
1.89 + bool aIsFirstPaint,
1.90 + bool aScheduleComposite) MOZ_OVERRIDE;
1.91 +
1.92 + void BuildDisplayList(nsDisplayListBuilder* aBuilder,
1.93 + nsSubDocumentFrame* aFrame,
1.94 + const nsRect& aDirtyRect,
1.95 + const nsDisplayListSet& aLists);
1.96 +
1.97 + already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
1.98 + nsIFrame* aFrame,
1.99 + LayerManager* aManager,
1.100 + const nsIntRect& aVisibleRect,
1.101 + nsDisplayItem* aItem,
1.102 + const ContainerLayerParameters& aContainerParameters);
1.103 +
1.104 + void OwnerContentChanged(nsIContent* aContent);
1.105 +
1.106 + void SetBackgroundColor(nscolor aColor) { mBackgroundColor = gfxRGBA(aColor); };
1.107 +
1.108 + /**
1.109 + * Notify the APZ code of an input event, and get back the untransformed event.
1.110 + * @param aEvent the input event; this is modified in-place so that the async
1.111 + * transforms are unapplied. This can be passed to Gecko for hit testing
1.112 + * and normal event dispatch.
1.113 + * @param aOutTargetGuid An out-parameter that will contain the identifier
1.114 + * of the APZC instance that handled the event, if one was found. This
1.115 + * argument may be null.
1.116 + */
1.117 + void NotifyInputEvent(WidgetInputEvent& aEvent,
1.118 + ScrollableLayerGuid* aOutTargetGuid);
1.119 +
1.120 + void ZoomToRect(uint32_t aPresShellId, ViewID aViewId, const CSSRect& aRect);
1.121 +
1.122 + void ContentReceivedTouch(const ScrollableLayerGuid& aGuid,
1.123 + bool aPreventDefault);
1.124 +
1.125 + void UpdateZoomConstraints(uint32_t aPresShellId,
1.126 + ViewID aViewId,
1.127 + bool aIsRoot,
1.128 + const ZoomConstraints& aConstraints);
1.129 +
1.130 + bool HitTest(const nsRect& aRect);
1.131 +
1.132 +protected:
1.133 + void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE;
1.134 +
1.135 + virtual bool RecvNotifyCompositorTransaction() MOZ_OVERRIDE;
1.136 +
1.137 + virtual bool RecvUpdateHitRegion(const nsRegion& aRegion) MOZ_OVERRIDE;
1.138 +
1.139 + virtual PLayerTransactionParent* AllocPLayerTransactionParent() MOZ_OVERRIDE;
1.140 + virtual bool DeallocPLayerTransactionParent(PLayerTransactionParent* aLayers) MOZ_OVERRIDE;
1.141 +
1.142 +private:
1.143 + void BuildViewMap();
1.144 + void TriggerRepaint();
1.145 + void DispatchEventForPanZoomController(const InputEvent& aEvent);
1.146 +
1.147 + LayerTransactionParent* GetShadowLayers() const;
1.148 + uint64_t GetLayerTreeId() const;
1.149 + Layer* GetRootLayer() const;
1.150 +
1.151 + // When our child frame is pushing transactions directly to the
1.152 + // compositor, this is the ID of its layer tree in the compositor's
1.153 + // context.
1.154 + uint64_t mLayersId;
1.155 +
1.156 + nsRefPtr<nsFrameLoader> mFrameLoader;
1.157 + nsRefPtr<ContainerLayer> mContainer;
1.158 + // When our scrolling behavior is ASYNC_PAN_ZOOM, we have a nonnull
1.159 + // APZCTreeManager. It's used to manipulate the shadow layer tree
1.160 + // on the compositor thread.
1.161 + nsRefPtr<layers::APZCTreeManager> mApzcTreeManager;
1.162 + nsRefPtr<RemoteContentController> mContentController;
1.163 +
1.164 + layers::APZCTreeManager* GetApzcTreeManager();
1.165 +
1.166 + // This contains the views for all the scrollable frames currently in the
1.167 + // painted region of our remote content.
1.168 + ViewMap mContentViews;
1.169 +
1.170 + // True after Destroy() has been called, which is triggered
1.171 + // originally by nsFrameLoader::Destroy(). After this point, we can
1.172 + // no longer safely ask the frame loader to find its nearest layer
1.173 + // manager, because it may have been disconnected from the DOM.
1.174 + // It's still OK to *tell* the frame loader that we've painted after
1.175 + // it's destroyed; it'll just ignore us, and we won't be able to
1.176 + // find an nsIFrame to invalidate. See ShadowLayersUpdated().
1.177 + //
1.178 + // Prefer the extra bit of state to null'ing out mFrameLoader in
1.179 + // Destroy() so that less code needs to be special-cased for after
1.180 + // Destroy().
1.181 + //
1.182 + // It's possible for mFrameLoader==null and
1.183 + // mFrameLoaderDestroyed==false.
1.184 + bool mFrameLoaderDestroyed;
1.185 + // this is gfxRGBA because that's what ColorLayer wants.
1.186 + gfxRGBA mBackgroundColor;
1.187 +
1.188 + nsRegion mTouchRegion;
1.189 +};
1.190 +
1.191 +} // namespace layout
1.192 +} // namespace mozilla
1.193 +
1.194 +/**
1.195 + * A DisplayRemote exists solely to graft a child process's shadow
1.196 + * layer tree (for a given RenderFrameParent) into its parent
1.197 + * process's layer tree.
1.198 + */
1.199 +class nsDisplayRemote : public nsDisplayItem
1.200 +{
1.201 + typedef mozilla::layout::RenderFrameParent RenderFrameParent;
1.202 +
1.203 +public:
1.204 + nsDisplayRemote(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
1.205 + RenderFrameParent* aRemoteFrame)
1.206 + : nsDisplayItem(aBuilder, aFrame)
1.207 + , mRemoteFrame(aRemoteFrame)
1.208 + {}
1.209 +
1.210 + virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
1.211 + LayerManager* aManager,
1.212 + const ContainerLayerParameters& aParameters) MOZ_OVERRIDE
1.213 + { return mozilla::LAYER_ACTIVE_FORCE; }
1.214 +
1.215 + virtual already_AddRefed<Layer>
1.216 + BuildLayer(nsDisplayListBuilder* aBuilder, LayerManager* aManager,
1.217 + const ContainerLayerParameters& aContainerParameters) MOZ_OVERRIDE;
1.218 +
1.219 + void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
1.220 + HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) MOZ_OVERRIDE;
1.221 +
1.222 + NS_DISPLAY_DECL_NAME("Remote", TYPE_REMOTE)
1.223 +
1.224 +private:
1.225 + RenderFrameParent* mRemoteFrame;
1.226 +};
1.227 +
1.228 +/**
1.229 + * nsDisplayRemoteShadow is a way of adding display items for frames in a
1.230 + * separate process, for hit testing only. After being processed, the hit
1.231 + * test state will contain IDs for any remote frames that were hit.
1.232 + *
1.233 + * The frame should be its respective render frame parent.
1.234 + */
1.235 +class nsDisplayRemoteShadow : public nsDisplayItem
1.236 +{
1.237 + typedef mozilla::layout::RenderFrameParent RenderFrameParent;
1.238 + typedef mozilla::layers::FrameMetrics::ViewID ViewID;
1.239 +
1.240 +public:
1.241 + nsDisplayRemoteShadow(nsDisplayListBuilder* aBuilder,
1.242 + nsIFrame* aFrame,
1.243 + nsRect aRect,
1.244 + ViewID aId)
1.245 + : nsDisplayItem(aBuilder, aFrame)
1.246 + , mRect(aRect)
1.247 + , mId(aId)
1.248 + {}
1.249 +
1.250 + nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) MOZ_OVERRIDE
1.251 + {
1.252 + *aSnap = false;
1.253 + return mRect;
1.254 + }
1.255 +
1.256 + virtual uint32_t GetPerFrameKey() MOZ_OVERRIDE
1.257 + {
1.258 + NS_ABORT();
1.259 + return 0;
1.260 + }
1.261 +
1.262 + void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
1.263 + HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) MOZ_OVERRIDE;
1.264 +
1.265 + NS_DISPLAY_DECL_NAME("Remote-Shadow", TYPE_REMOTE_SHADOW)
1.266 +
1.267 +private:
1.268 + nsRect mRect;
1.269 + ViewID mId;
1.270 +};
1.271 +
1.272 +#endif // mozilla_layout_RenderFrameParent_h
