1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/ipc/RenderFrameParent.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,1189 @@
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 +#include "base/basictypes.h"
1.12 +
1.13 +#include "BasicLayers.h"
1.14 +#include "gfx3DMatrix.h"
1.15 +#ifdef MOZ_ENABLE_D3D9_LAYER
1.16 +# include "LayerManagerD3D9.h"
1.17 +#endif //MOZ_ENABLE_D3D9_LAYER
1.18 +#include "mozilla/BrowserElementParent.h"
1.19 +#include "mozilla/dom/TabParent.h"
1.20 +#include "mozilla/layers/APZCTreeManager.h"
1.21 +#include "mozilla/layers/CompositorParent.h"
1.22 +#include "mozilla/layers/LayerTransactionParent.h"
1.23 +#include "nsContentUtils.h"
1.24 +#include "nsFrameLoader.h"
1.25 +#include "nsIObserver.h"
1.26 +#include "nsSubDocumentFrame.h"
1.27 +#include "nsView.h"
1.28 +#include "nsViewportFrame.h"
1.29 +#include "RenderFrameParent.h"
1.30 +#include "mozilla/layers/LayerManagerComposite.h"
1.31 +#include "mozilla/layers/CompositorChild.h"
1.32 +#include "ClientLayerManager.h"
1.33 +
1.34 +typedef nsContentView::ViewConfig ViewConfig;
1.35 +using namespace mozilla::dom;
1.36 +using namespace mozilla::layers;
1.37 +
1.38 +namespace mozilla {
1.39 +namespace layout {
1.40 +
1.41 +typedef FrameMetrics::ViewID ViewID;
1.42 +typedef RenderFrameParent::ViewMap ViewMap;
1.43 +
1.44 +// Represents (affine) transforms that are calculated from a content view.
1.45 +struct ViewTransform {
1.46 + ViewTransform(nsIntPoint aTranslation = nsIntPoint(0, 0), float aXScale = 1, float aYScale = 1)
1.47 + : mTranslation(aTranslation)
1.48 + , mXScale(aXScale)
1.49 + , mYScale(aYScale)
1.50 + {}
1.51 +
1.52 + operator gfx3DMatrix() const
1.53 + {
1.54 + return
1.55 + gfx3DMatrix::Translation(mTranslation.x, mTranslation.y, 0) *
1.56 + gfx3DMatrix::ScalingMatrix(mXScale, mYScale, 1);
1.57 + }
1.58 +
1.59 + nsIntPoint mTranslation;
1.60 + float mXScale;
1.61 + float mYScale;
1.62 +};
1.63 +
1.64 +// Matrix helpers
1.65 +// For our simple purposes, these helpers apply to 2D affine transformations
1.66 +// that can be represented by a scale and a translation. This makes the math
1.67 +// much easier because we only expect the diagonals and the translation
1.68 +// coordinates of the matrix to be non-zero.
1.69 +
1.70 +static double GetXScale(const gfx3DMatrix& aTransform)
1.71 +{
1.72 + return aTransform._11;
1.73 +}
1.74 +
1.75 +static double GetYScale(const gfx3DMatrix& aTransform)
1.76 +{
1.77 + return aTransform._22;
1.78 +}
1.79 +
1.80 +static void Scale(gfx3DMatrix& aTransform, double aXScale, double aYScale)
1.81 +{
1.82 + aTransform._11 *= aXScale;
1.83 + aTransform._22 *= aYScale;
1.84 +}
1.85 +
1.86 +static void ReverseTranslate(gfx3DMatrix& aTransform, const gfxPoint& aOffset)
1.87 +{
1.88 + aTransform._41 -= aOffset.x;
1.89 + aTransform._42 -= aOffset.y;
1.90 +}
1.91 +
1.92 +
1.93 +static void ApplyTransform(nsRect& aRect,
1.94 + gfx3DMatrix& aTransform,
1.95 + nscoord auPerDevPixel)
1.96 +{
1.97 + aRect.x = aRect.x * aTransform._11 + aTransform._41 * auPerDevPixel;
1.98 + aRect.y = aRect.y * aTransform._22 + aTransform._42 * auPerDevPixel;
1.99 + aRect.width = aRect.width * aTransform._11;
1.100 + aRect.height = aRect.height * aTransform._22;
1.101 +}
1.102 +
1.103 +static void
1.104 +AssertInTopLevelChromeDoc(ContainerLayer* aContainer,
1.105 + nsIFrame* aContainedFrame)
1.106 +{
1.107 + NS_ASSERTION(
1.108 + (aContainer->Manager()->GetBackendType() != mozilla::layers::LayersBackend::LAYERS_BASIC) ||
1.109 + (aContainedFrame->GetNearestWidget() ==
1.110 + static_cast<BasicLayerManager*>(aContainer->Manager())->GetRetainerWidget()),
1.111 + "Expected frame to be in top-level chrome document");
1.112 +}
1.113 +
1.114 +// Return view for given ID in aMap, nullptr if not found.
1.115 +static nsContentView*
1.116 +FindViewForId(const ViewMap& aMap, ViewID aId)
1.117 +{
1.118 + ViewMap::const_iterator iter = aMap.find(aId);
1.119 + return iter != aMap.end() ? iter->second : nullptr;
1.120 +}
1.121 +
1.122 +// Return the root content view in aMap, nullptr if not found.
1.123 +static nsContentView*
1.124 +FindRootView(const ViewMap& aMap)
1.125 +{
1.126 + for (ViewMap::const_iterator iter = aMap.begin(), end = aMap.end();
1.127 + iter != end;
1.128 + ++iter) {
1.129 + if (iter->second->IsRoot())
1.130 + return iter->second;
1.131 + }
1.132 + return nullptr;
1.133 +}
1.134 +
1.135 +static const FrameMetrics*
1.136 +GetFrameMetrics(Layer* aLayer)
1.137 +{
1.138 + ContainerLayer* container = aLayer->AsContainerLayer();
1.139 + return container ? &container->GetFrameMetrics() : nullptr;
1.140 +}
1.141 +
1.142 +/**
1.143 + * Gets the layer-pixel offset of aContainerFrame's content rect top-left
1.144 + * from the nearest display item reference frame (which we assume will be inducing
1.145 + * a ContainerLayer).
1.146 + */
1.147 +static nsIntPoint
1.148 +GetContentRectLayerOffset(nsIFrame* aContainerFrame, nsDisplayListBuilder* aBuilder)
1.149 +{
1.150 + nscoord auPerDevPixel = aContainerFrame->PresContext()->AppUnitsPerDevPixel();
1.151 +
1.152 + // Offset to the content rect in case we have borders or padding
1.153 + // Note that aContainerFrame could be a reference frame itself, so
1.154 + // we need to be careful here to ensure that we call ToReferenceFrame
1.155 + // on aContainerFrame and not its parent.
1.156 + nsPoint frameOffset = aBuilder->ToReferenceFrame(aContainerFrame) +
1.157 + (aContainerFrame->GetContentRect().TopLeft() - aContainerFrame->GetPosition());
1.158 +
1.159 + return frameOffset.ToNearestPixels(auPerDevPixel);
1.160 +}
1.161 +
1.162 +// Compute the transform of the shadow tree contained by
1.163 +// |aContainerFrame| to widget space. We transform because the
1.164 +// subprocess layer manager renders to a different top-left than where
1.165 +// the shadow tree is drawn here and because a scale can be set on the
1.166 +// shadow tree.
1.167 +static ViewTransform
1.168 +ComputeShadowTreeTransform(nsIFrame* aContainerFrame,
1.169 + nsFrameLoader* aRootFrameLoader,
1.170 + const FrameMetrics* aMetrics,
1.171 + const ViewConfig& aConfig,
1.172 + float aTempScaleX = 1.0,
1.173 + float aTempScaleY = 1.0)
1.174 +{
1.175 + // |aMetrics->mViewportScrollOffset| The frame's scroll offset when it was
1.176 + // painted, in content document pixels.
1.177 + // |aConfig.mScrollOffset| What our user expects, or wants, the
1.178 + // frame scroll offset to be in chrome
1.179 + // document app units.
1.180 + //
1.181 + // So we set a compensating translation that moves the content document
1.182 + // pixels to where the user wants them to be.
1.183 + //
1.184 + nscoord auPerDevPixel = aContainerFrame->PresContext()->AppUnitsPerDevPixel();
1.185 + nsIntPoint scrollOffset =
1.186 + aConfig.mScrollOffset.ToNearestPixels(auPerDevPixel);
1.187 + LayerIntPoint metricsScrollOffset = RoundedToInt(aMetrics->GetScrollOffsetInLayerPixels());
1.188 +
1.189 + if (aRootFrameLoader->AsyncScrollEnabled() && !aMetrics->mDisplayPort.IsEmpty()) {
1.190 + // Only use asynchronous scrolling if it is enabled and there is a
1.191 + // displayport defined. It is useful to have a scroll layer that is
1.192 + // synchronously scrolled for identifying a scroll area before it is
1.193 + // being actively scrolled.
1.194 + nsIntPoint scrollCompensation(
1.195 + (scrollOffset.x / aTempScaleX - metricsScrollOffset.x),
1.196 + (scrollOffset.y / aTempScaleY - metricsScrollOffset.y));
1.197 +
1.198 + return ViewTransform(-scrollCompensation, aConfig.mXScale, aConfig.mYScale);
1.199 + } else {
1.200 + return ViewTransform(nsIntPoint(0, 0), 1, 1);
1.201 + }
1.202 +}
1.203 +
1.204 +// Use shadow layer tree to build display list for the browser's frame.
1.205 +static void
1.206 +BuildListForLayer(Layer* aLayer,
1.207 + nsFrameLoader* aRootFrameLoader,
1.208 + const gfx3DMatrix& aTransform,
1.209 + nsDisplayListBuilder* aBuilder,
1.210 + nsDisplayList& aShadowTree,
1.211 + nsIFrame* aSubdocFrame)
1.212 +{
1.213 + const FrameMetrics* metrics = GetFrameMetrics(aLayer);
1.214 +
1.215 + gfx3DMatrix transform;
1.216 +
1.217 + if (metrics && metrics->IsScrollable()) {
1.218 + const ViewID scrollId = metrics->GetScrollId();
1.219 +
1.220 + // We need to figure out the bounds of the scrollable region using the
1.221 + // shadow layer tree from the remote process. The metrics viewport is
1.222 + // defined based on all the transformations of its parent layers and
1.223 + // the scale of the current layer.
1.224 +
1.225 + // Calculate transform for this layer.
1.226 + nsContentView* view =
1.227 + aRootFrameLoader->GetCurrentRemoteFrame()->GetContentView(scrollId);
1.228 + // XXX why don't we include aLayer->GetTransform() in the inverse-scale here?
1.229 + // This seems wrong, but it doesn't seem to cause bugs!
1.230 + gfx3DMatrix applyTransform = ComputeShadowTreeTransform(
1.231 + aSubdocFrame, aRootFrameLoader, metrics, view->GetViewConfig(),
1.232 + 1 / GetXScale(aTransform), 1 / GetYScale(aTransform));
1.233 + gfx3DMatrix layerTransform;
1.234 + To3DMatrix(aLayer->GetTransform(), layerTransform);
1.235 + transform = applyTransform * layerTransform * aTransform;
1.236 +
1.237 + // As mentioned above, bounds calculation also depends on the scale
1.238 + // of this layer.
1.239 + gfx3DMatrix tmpTransform = aTransform;
1.240 + Scale(tmpTransform, GetXScale(applyTransform), GetYScale(applyTransform));
1.241 +
1.242 + // Calculate rect for this layer based on aTransform.
1.243 + nsRect bounds;
1.244 + {
1.245 + bounds = CSSRect::ToAppUnits(metrics->mViewport);
1.246 + nscoord auPerDevPixel = aSubdocFrame->PresContext()->AppUnitsPerDevPixel();
1.247 + ApplyTransform(bounds, tmpTransform, auPerDevPixel);
1.248 + }
1.249 +
1.250 + aShadowTree.AppendToTop(
1.251 + new (aBuilder) nsDisplayRemoteShadow(aBuilder, aSubdocFrame, bounds, scrollId));
1.252 +
1.253 + } else {
1.254 + gfx3DMatrix layerTransform;
1.255 + To3DMatrix(aLayer->GetTransform(), layerTransform);
1.256 + transform = layerTransform * aTransform;
1.257 + }
1.258 +
1.259 + for (Layer* child = aLayer->GetFirstChild(); child;
1.260 + child = child->GetNextSibling()) {
1.261 + BuildListForLayer(child, aRootFrameLoader, transform,
1.262 + aBuilder, aShadowTree, aSubdocFrame);
1.263 + }
1.264 +}
1.265 +
1.266 +// Go down shadow layer tree and apply transformations for scrollable layers.
1.267 +static void
1.268 +TransformShadowTree(nsDisplayListBuilder* aBuilder, nsFrameLoader* aFrameLoader,
1.269 + nsIFrame* aFrame, Layer* aLayer,
1.270 + const ViewTransform& aTransform,
1.271 + float aTempScaleDiffX = 1.0,
1.272 + float aTempScaleDiffY = 1.0)
1.273 +{
1.274 + LayerComposite* shadow = aLayer->AsLayerComposite();
1.275 + shadow->SetShadowClipRect(aLayer->GetClipRect());
1.276 + shadow->SetShadowVisibleRegion(aLayer->GetVisibleRegion());
1.277 + shadow->SetShadowOpacity(aLayer->GetOpacity());
1.278 +
1.279 + const FrameMetrics* metrics = GetFrameMetrics(aLayer);
1.280 +
1.281 + gfx3DMatrix shadowTransform;
1.282 + To3DMatrix(aLayer->GetTransform(), shadowTransform);
1.283 + ViewTransform layerTransform = aTransform;
1.284 +
1.285 + if (metrics && metrics->IsScrollable()) {
1.286 + const ViewID scrollId = metrics->GetScrollId();
1.287 + const nsContentView* view =
1.288 + aFrameLoader->GetCurrentRemoteFrame()->GetContentView(scrollId);
1.289 + NS_ABORT_IF_FALSE(view, "Array of views should be consistent with layer tree");
1.290 + gfx3DMatrix currentTransform;
1.291 + To3DMatrix(aLayer->GetTransform(), currentTransform);
1.292 +
1.293 + const ViewConfig& config = view->GetViewConfig();
1.294 + // With temporary scale we should compensate translation
1.295 + // using temporary scale value
1.296 + aTempScaleDiffX *= GetXScale(shadowTransform) * config.mXScale;
1.297 + aTempScaleDiffY *= GetYScale(shadowTransform) * config.mYScale;
1.298 + ViewTransform viewTransform = ComputeShadowTreeTransform(
1.299 + aFrame, aFrameLoader, metrics, view->GetViewConfig(),
1.300 + aTempScaleDiffX, aTempScaleDiffY
1.301 + );
1.302 +
1.303 + // Apply the layer's own transform *before* the view transform
1.304 + shadowTransform = gfx3DMatrix(viewTransform) * currentTransform;
1.305 +
1.306 + layerTransform = viewTransform;
1.307 + if (metrics->IsRootScrollable()) {
1.308 + // Apply the translation *before* we do the rest of the transforms.
1.309 + nsIntPoint offset = GetContentRectLayerOffset(aFrame, aBuilder);
1.310 + shadowTransform = shadowTransform *
1.311 + gfx3DMatrix::Translation(float(offset.x), float(offset.y), 0.0);
1.312 + }
1.313 + }
1.314 +
1.315 + if (aLayer->GetIsFixedPosition() &&
1.316 + !aLayer->GetParent()->GetIsFixedPosition()) {
1.317 + // Alter the shadow transform of fixed position layers in the situation
1.318 + // that the view transform's scroll position doesn't match the actual
1.319 + // scroll position, due to asynchronous layer scrolling.
1.320 + float offsetX = layerTransform.mTranslation.x;
1.321 + float offsetY = layerTransform.mTranslation.y;
1.322 + ReverseTranslate(shadowTransform, gfxPoint(offsetX, offsetY));
1.323 + const nsIntRect* clipRect = shadow->GetShadowClipRect();
1.324 + if (clipRect) {
1.325 + nsIntRect transformedClipRect(*clipRect);
1.326 + transformedClipRect.MoveBy(-offsetX, -offsetY);
1.327 + shadow->SetShadowClipRect(&transformedClipRect);
1.328 + }
1.329 + }
1.330 +
1.331 + // The transform already takes the resolution scale into account. Since we
1.332 + // will apply the resolution scale again when computing the effective
1.333 + // transform, we must apply the inverse resolution scale here.
1.334 + if (ContainerLayer* c = aLayer->AsContainerLayer()) {
1.335 + shadowTransform.Scale(1.0f/c->GetPreXScale(),
1.336 + 1.0f/c->GetPreYScale(),
1.337 + 1);
1.338 + }
1.339 + shadowTransform.ScalePost(1.0f/aLayer->GetPostXScale(),
1.340 + 1.0f/aLayer->GetPostYScale(),
1.341 + 1);
1.342 +
1.343 + gfx::Matrix4x4 realShadowTransform;
1.344 + ToMatrix4x4(shadowTransform, realShadowTransform);
1.345 + shadow->SetShadowTransform(realShadowTransform);
1.346 + for (Layer* child = aLayer->GetFirstChild();
1.347 + child; child = child->GetNextSibling()) {
1.348 + TransformShadowTree(aBuilder, aFrameLoader, aFrame, child, layerTransform,
1.349 + aTempScaleDiffX, aTempScaleDiffY);
1.350 + }
1.351 +}
1.352 +
1.353 +static void
1.354 +ClearContainer(ContainerLayer* aContainer)
1.355 +{
1.356 + while (Layer* layer = aContainer->GetFirstChild()) {
1.357 + aContainer->RemoveChild(layer);
1.358 + }
1.359 +}
1.360 +
1.361 +// Return true iff |aManager| is a "temporary layer manager". They're
1.362 +// used for small software rendering tasks, like drawWindow. That's
1.363 +// currently implemented by a BasicLayerManager without a backing
1.364 +// widget, and hence in non-retained mode.
1.365 +inline static bool
1.366 +IsTempLayerManager(LayerManager* aManager)
1.367 +{
1.368 + return (mozilla::layers::LayersBackend::LAYERS_BASIC == aManager->GetBackendType() &&
1.369 + !static_cast<BasicLayerManager*>(aManager)->IsRetained());
1.370 +}
1.371 +
1.372 +// Recursively create a new array of scrollables, preserving any scrollables
1.373 +// that are still in the layer tree.
1.374 +//
1.375 +// aXScale and aYScale are used to calculate any values that need to be in
1.376 +// chrome-document CSS pixels and aren't part of the rendering loop, such as
1.377 +// the initial scroll offset for a new view.
1.378 +static void
1.379 +BuildViewMap(ViewMap& oldContentViews, ViewMap& newContentViews,
1.380 + nsFrameLoader* aFrameLoader, Layer* aLayer,
1.381 + float aXScale = 1, float aYScale = 1,
1.382 + float aAccConfigXScale = 1, float aAccConfigYScale = 1)
1.383 +{
1.384 + ContainerLayer* container = aLayer->AsContainerLayer();
1.385 + if (!container)
1.386 + return;
1.387 + const FrameMetrics metrics = container->GetFrameMetrics();
1.388 + const ViewID scrollId = metrics.GetScrollId();
1.389 + gfx3DMatrix transform;
1.390 + To3DMatrix(aLayer->GetTransform(), transform);
1.391 + aXScale *= GetXScale(transform);
1.392 + aYScale *= GetYScale(transform);
1.393 +
1.394 + if (metrics.IsScrollable()) {
1.395 + nscoord auPerDevPixel = aFrameLoader->GetPrimaryFrameOfOwningContent()
1.396 + ->PresContext()->AppUnitsPerDevPixel();
1.397 + nscoord auPerCSSPixel = auPerDevPixel * metrics.mDevPixelsPerCSSPixel.scale;
1.398 + nsContentView* view = FindViewForId(oldContentViews, scrollId);
1.399 + if (view) {
1.400 + // View already exists. Be sure to propagate scales for any values
1.401 + // that need to be calculated something in chrome-doc CSS pixels.
1.402 + ViewConfig config = view->GetViewConfig();
1.403 + aXScale *= config.mXScale;
1.404 + aYScale *= config.mYScale;
1.405 + view->mFrameLoader = aFrameLoader;
1.406 + // If scale has changed, then we should update
1.407 + // current scroll offset to new scaled value
1.408 + if (aAccConfigXScale != view->mParentScaleX ||
1.409 + aAccConfigYScale != view->mParentScaleY) {
1.410 + float xscroll = 0, yscroll = 0;
1.411 + view->GetScrollX(&xscroll);
1.412 + view->GetScrollY(&yscroll);
1.413 + xscroll = xscroll * (aAccConfigXScale / view->mParentScaleX);
1.414 + yscroll = yscroll * (aAccConfigYScale / view->mParentScaleY);
1.415 + view->ScrollTo(xscroll, yscroll);
1.416 + view->mParentScaleX = aAccConfigXScale;
1.417 + view->mParentScaleY = aAccConfigYScale;
1.418 + }
1.419 + // Collect only config scale values for scroll compensation
1.420 + aAccConfigXScale *= config.mXScale;
1.421 + aAccConfigYScale *= config.mYScale;
1.422 + } else {
1.423 + // View doesn't exist, so generate one. We start the view scroll offset at
1.424 + // the same position as the framemetric's scroll offset from the layer.
1.425 + // The default scale is 1, so no need to propagate scale down.
1.426 + ViewConfig config;
1.427 + config.mScrollOffset = nsPoint(
1.428 + NSIntPixelsToAppUnits(metrics.GetScrollOffset().x, auPerCSSPixel) * aXScale,
1.429 + NSIntPixelsToAppUnits(metrics.GetScrollOffset().y, auPerCSSPixel) * aYScale);
1.430 + view = new nsContentView(aFrameLoader, scrollId, metrics.mIsRoot, config);
1.431 + view->mParentScaleX = aAccConfigXScale;
1.432 + view->mParentScaleY = aAccConfigYScale;
1.433 + }
1.434 +
1.435 + // I don't know what units mViewportSize is in, hence use ToUnknownRect
1.436 + // here to mark the current frontier in type info propagation
1.437 + gfx::Rect viewport = metrics.mViewport.ToUnknownRect();
1.438 + view->mViewportSize = nsSize(
1.439 + NSIntPixelsToAppUnits(viewport.width, auPerDevPixel) * aXScale,
1.440 + NSIntPixelsToAppUnits(viewport.height, auPerDevPixel) * aYScale);
1.441 + view->mContentSize = nsSize(
1.442 + NSFloatPixelsToAppUnits(metrics.mScrollableRect.width, auPerCSSPixel) * aXScale,
1.443 + NSFloatPixelsToAppUnits(metrics.mScrollableRect.height, auPerCSSPixel) * aYScale);
1.444 +
1.445 + newContentViews[scrollId] = view;
1.446 + }
1.447 +
1.448 + for (Layer* child = aLayer->GetFirstChild();
1.449 + child; child = child->GetNextSibling()) {
1.450 + BuildViewMap(oldContentViews, newContentViews, aFrameLoader, child,
1.451 + aXScale, aYScale, aAccConfigXScale, aAccConfigYScale);
1.452 + }
1.453 +}
1.454 +
1.455 +static void
1.456 +BuildBackgroundPatternFor(ContainerLayer* aContainer,
1.457 + Layer* aShadowRoot,
1.458 + const ViewConfig& aConfig,
1.459 + const gfxRGBA& aColor,
1.460 + LayerManager* aManager,
1.461 + nsIFrame* aFrame)
1.462 +{
1.463 + LayerComposite* shadowRoot = aShadowRoot->AsLayerComposite();
1.464 + gfx::Matrix t;
1.465 + if (!shadowRoot->GetShadowTransform().Is2D(&t)) {
1.466 + return;
1.467 + }
1.468 +
1.469 + // Get the rect bounding the shadow content, transformed into the
1.470 + // same space as |aFrame|
1.471 + nsIntRect contentBounds = shadowRoot->GetShadowVisibleRegion().GetBounds();
1.472 + gfxRect contentVis(contentBounds.x, contentBounds.y,
1.473 + contentBounds.width, contentBounds.height);
1.474 + gfxRect localContentVis(gfx::ThebesMatrix(t).Transform(contentVis));
1.475 + // Round *in* here because this area is punched out of the background
1.476 + localContentVis.RoundIn();
1.477 + nsIntRect localIntContentVis(localContentVis.X(), localContentVis.Y(),
1.478 + localContentVis.Width(), localContentVis.Height());
1.479 +
1.480 + // Get the frame's rect
1.481 + nscoord auPerDevPixel = aFrame->PresContext()->AppUnitsPerDevPixel();
1.482 + nsIntRect frameRect = aFrame->GetRect().ToOutsidePixels(auPerDevPixel);
1.483 +
1.484 + // If the shadow tree covers the frame rect, don't bother building
1.485 + // the background, it wouldn't be visible
1.486 + if (localIntContentVis.Contains(frameRect)) {
1.487 + return;
1.488 + }
1.489 + nsRefPtr<ColorLayer> layer = aManager->CreateColorLayer();
1.490 + layer->SetColor(aColor);
1.491 +
1.492 + // The visible area of the background is the frame's area minus the
1.493 + // content area
1.494 + nsIntRegion bgRgn(frameRect);
1.495 + bgRgn.Sub(bgRgn, localIntContentVis);
1.496 + bgRgn.MoveBy(-frameRect.TopLeft());
1.497 + layer->SetVisibleRegion(bgRgn);
1.498 +
1.499 + aContainer->InsertAfter(layer, nullptr);
1.500 +}
1.501 +
1.502 +already_AddRefed<LayerManager>
1.503 +GetFrom(nsFrameLoader* aFrameLoader)
1.504 +{
1.505 + nsIDocument* doc = aFrameLoader->GetOwnerDoc();
1.506 + return nsContentUtils::LayerManagerForDocument(doc);
1.507 +}
1.508 +
1.509 +class RemoteContentController : public GeckoContentController {
1.510 +public:
1.511 + RemoteContentController(RenderFrameParent* aRenderFrame)
1.512 + : mUILoop(MessageLoop::current())
1.513 + , mRenderFrame(aRenderFrame)
1.514 + , mHaveZoomConstraints(false)
1.515 + { }
1.516 +
1.517 + virtual void RequestContentRepaint(const FrameMetrics& aFrameMetrics) MOZ_OVERRIDE
1.518 + {
1.519 + // We always need to post requests into the "UI thread" otherwise the
1.520 + // requests may get processed out of order.
1.521 + mUILoop->PostTask(
1.522 + FROM_HERE,
1.523 + NewRunnableMethod(this, &RemoteContentController::DoRequestContentRepaint,
1.524 + aFrameMetrics));
1.525 + }
1.526 +
1.527 + virtual void AcknowledgeScrollUpdate(const FrameMetrics::ViewID& aScrollId,
1.528 + const uint32_t& aScrollGeneration) MOZ_OVERRIDE
1.529 + {
1.530 + if (MessageLoop::current() != mUILoop) {
1.531 + // We have to send this message from the "UI thread" (main
1.532 + // thread).
1.533 + mUILoop->PostTask(
1.534 + FROM_HERE,
1.535 + NewRunnableMethod(this, &RemoteContentController::AcknowledgeScrollUpdate,
1.536 + aScrollId, aScrollGeneration));
1.537 + return;
1.538 + }
1.539 + if (mRenderFrame) {
1.540 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.541 + browser->AcknowledgeScrollUpdate(aScrollId, aScrollGeneration);
1.542 + }
1.543 + }
1.544 +
1.545 + virtual void HandleDoubleTap(const CSSPoint& aPoint,
1.546 + int32_t aModifiers,
1.547 + const ScrollableLayerGuid& aGuid) MOZ_OVERRIDE
1.548 + {
1.549 + if (MessageLoop::current() != mUILoop) {
1.550 + // We have to send this message from the "UI thread" (main
1.551 + // thread).
1.552 + mUILoop->PostTask(
1.553 + FROM_HERE,
1.554 + NewRunnableMethod(this, &RemoteContentController::HandleDoubleTap,
1.555 + aPoint, aModifiers, aGuid));
1.556 + return;
1.557 + }
1.558 + if (mRenderFrame) {
1.559 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.560 + browser->HandleDoubleTap(aPoint, aModifiers, aGuid);
1.561 + }
1.562 + }
1.563 +
1.564 + virtual void HandleSingleTap(const CSSPoint& aPoint,
1.565 + int32_t aModifiers,
1.566 + const ScrollableLayerGuid& aGuid) MOZ_OVERRIDE
1.567 + {
1.568 + if (MessageLoop::current() != mUILoop) {
1.569 + // We have to send this message from the "UI thread" (main
1.570 + // thread).
1.571 + mUILoop->PostTask(
1.572 + FROM_HERE,
1.573 + NewRunnableMethod(this, &RemoteContentController::HandleSingleTap,
1.574 + aPoint, aModifiers, aGuid));
1.575 + return;
1.576 + }
1.577 + if (mRenderFrame) {
1.578 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.579 + browser->HandleSingleTap(aPoint, aModifiers, aGuid);
1.580 + }
1.581 + }
1.582 +
1.583 + virtual void HandleLongTap(const CSSPoint& aPoint,
1.584 + int32_t aModifiers,
1.585 + const ScrollableLayerGuid& aGuid) MOZ_OVERRIDE
1.586 + {
1.587 + if (MessageLoop::current() != mUILoop) {
1.588 + // We have to send this message from the "UI thread" (main
1.589 + // thread).
1.590 + mUILoop->PostTask(
1.591 + FROM_HERE,
1.592 + NewRunnableMethod(this, &RemoteContentController::HandleLongTap,
1.593 + aPoint, aModifiers, aGuid));
1.594 + return;
1.595 + }
1.596 + if (mRenderFrame) {
1.597 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.598 + browser->HandleLongTap(aPoint, aModifiers, aGuid);
1.599 + }
1.600 + }
1.601 +
1.602 + virtual void HandleLongTapUp(const CSSPoint& aPoint,
1.603 + int32_t aModifiers,
1.604 + const ScrollableLayerGuid& aGuid) MOZ_OVERRIDE
1.605 + {
1.606 + if (MessageLoop::current() != mUILoop) {
1.607 + // We have to send this message from the "UI thread" (main
1.608 + // thread).
1.609 + mUILoop->PostTask(
1.610 + FROM_HERE,
1.611 + NewRunnableMethod(this, &RemoteContentController::HandleLongTapUp,
1.612 + aPoint, aModifiers, aGuid));
1.613 + return;
1.614 + }
1.615 + if (mRenderFrame) {
1.616 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.617 + browser->HandleLongTapUp(aPoint, aModifiers, aGuid);
1.618 + }
1.619 + }
1.620 +
1.621 + void ClearRenderFrame() { mRenderFrame = nullptr; }
1.622 +
1.623 + virtual void SendAsyncScrollDOMEvent(bool aIsRoot,
1.624 + const CSSRect& aContentRect,
1.625 + const CSSSize& aContentSize) MOZ_OVERRIDE
1.626 + {
1.627 + if (MessageLoop::current() != mUILoop) {
1.628 + mUILoop->PostTask(
1.629 + FROM_HERE,
1.630 + NewRunnableMethod(this,
1.631 + &RemoteContentController::SendAsyncScrollDOMEvent,
1.632 + aIsRoot, aContentRect, aContentSize));
1.633 + return;
1.634 + }
1.635 + if (mRenderFrame && aIsRoot) {
1.636 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.637 + BrowserElementParent::DispatchAsyncScrollEvent(browser, aContentRect,
1.638 + aContentSize);
1.639 + }
1.640 + }
1.641 +
1.642 + virtual void PostDelayedTask(Task* aTask, int aDelayMs) MOZ_OVERRIDE
1.643 + {
1.644 + MessageLoop::current()->PostDelayedTask(FROM_HERE, aTask, aDelayMs);
1.645 + }
1.646 +
1.647 + virtual bool GetRootZoomConstraints(ZoomConstraints* aOutConstraints)
1.648 + {
1.649 + if (mHaveZoomConstraints && aOutConstraints) {
1.650 + *aOutConstraints = mZoomConstraints;
1.651 + }
1.652 + return mHaveZoomConstraints;
1.653 + }
1.654 +
1.655 + virtual bool GetTouchSensitiveRegion(CSSRect* aOutRegion)
1.656 + {
1.657 + if (mTouchSensitiveRegion.IsEmpty())
1.658 + return false;
1.659 +
1.660 + *aOutRegion = CSSRect::FromAppUnits(mTouchSensitiveRegion.GetBounds());
1.661 + return true;
1.662 + }
1.663 +
1.664 + virtual void NotifyAPZStateChange(const ScrollableLayerGuid& aGuid,
1.665 + APZStateChange aChange,
1.666 + int aArg)
1.667 + {
1.668 + if (MessageLoop::current() != mUILoop) {
1.669 + mUILoop->PostTask(
1.670 + FROM_HERE,
1.671 + NewRunnableMethod(this, &RemoteContentController::NotifyAPZStateChange,
1.672 + aGuid, aChange, aArg));
1.673 + return;
1.674 + }
1.675 + if (mRenderFrame) {
1.676 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.677 + browser->NotifyAPZStateChange(aGuid.mScrollId, aChange, aArg);
1.678 + }
1.679 + }
1.680 +
1.681 + // Methods used by RenderFrameParent to set fields stored here.
1.682 +
1.683 + void SaveZoomConstraints(const ZoomConstraints& aConstraints)
1.684 + {
1.685 + mHaveZoomConstraints = true;
1.686 + mZoomConstraints = aConstraints;
1.687 + }
1.688 +
1.689 + void SetTouchSensitiveRegion(const nsRegion& aRegion)
1.690 + {
1.691 + mTouchSensitiveRegion = aRegion;
1.692 + }
1.693 +private:
1.694 + void DoRequestContentRepaint(const FrameMetrics& aFrameMetrics)
1.695 + {
1.696 + if (mRenderFrame) {
1.697 + TabParent* browser = static_cast<TabParent*>(mRenderFrame->Manager());
1.698 + browser->UpdateFrame(aFrameMetrics);
1.699 + }
1.700 + }
1.701 +
1.702 + MessageLoop* mUILoop;
1.703 + RenderFrameParent* mRenderFrame;
1.704 +
1.705 + bool mHaveZoomConstraints;
1.706 + ZoomConstraints mZoomConstraints;
1.707 + nsRegion mTouchSensitiveRegion;
1.708 +};
1.709 +
1.710 +RenderFrameParent::RenderFrameParent()
1.711 + : mLayersId(0)
1.712 + , mFrameLoaderDestroyed(false)
1.713 + , mBackgroundColor(gfxRGBA(1, 1, 1))
1.714 +{
1.715 +}
1.716 +
1.717 +void
1.718 +RenderFrameParent::Init(nsFrameLoader* aFrameLoader,
1.719 + ScrollingBehavior aScrollingBehavior,
1.720 + TextureFactoryIdentifier* aTextureFactoryIdentifier,
1.721 + uint64_t* aId)
1.722 +{
1.723 + mFrameLoader = aFrameLoader;
1.724 +
1.725 + *aId = 0;
1.726 +
1.727 + nsRefPtr<LayerManager> lm = GetFrom(mFrameLoader);
1.728 + // Perhaps the document containing this frame currently has no presentation?
1.729 + if (lm && lm->GetBackendType() == LayersBackend::LAYERS_CLIENT) {
1.730 + *aTextureFactoryIdentifier =
1.731 + static_cast<ClientLayerManager*>(lm.get())->GetTextureFactoryIdentifier();
1.732 + } else {
1.733 + *aTextureFactoryIdentifier = TextureFactoryIdentifier();
1.734 + }
1.735 +
1.736 + if (lm && lm->GetRoot() && lm->GetRoot()->AsContainerLayer()) {
1.737 + ViewID rootScrollId = lm->GetRoot()->AsContainerLayer()->GetFrameMetrics().GetScrollId();
1.738 + if (rootScrollId != FrameMetrics::NULL_SCROLL_ID) {
1.739 + mContentViews[rootScrollId] = new nsContentView(aFrameLoader, rootScrollId, true);
1.740 + }
1.741 + }
1.742 +
1.743 + if (CompositorParent::CompositorLoop()) {
1.744 + // Our remote frame will push layers updates to the compositor,
1.745 + // and we'll keep an indirect reference to that tree.
1.746 + *aId = mLayersId = CompositorParent::AllocateLayerTreeId();
1.747 + if (lm && lm->GetBackendType() == LayersBackend::LAYERS_CLIENT) {
1.748 + ClientLayerManager *clientManager = static_cast<ClientLayerManager*>(lm.get());
1.749 + clientManager->GetRemoteRenderer()->SendNotifyChildCreated(mLayersId);
1.750 + }
1.751 + if (aScrollingBehavior == ASYNC_PAN_ZOOM) {
1.752 + mContentController = new RemoteContentController(this);
1.753 + CompositorParent::SetControllerForLayerTree(mLayersId, mContentController);
1.754 + }
1.755 + }
1.756 + // Set a default RenderFrameParent
1.757 + mFrameLoader->SetCurrentRemoteFrame(this);
1.758 +}
1.759 +
1.760 +APZCTreeManager*
1.761 +RenderFrameParent::GetApzcTreeManager()
1.762 +{
1.763 + // We can't get a ref to the APZCTreeManager until after the child is
1.764 + // created and the static getter knows which CompositorParent is
1.765 + // instantiated with this layers ID. That's why try to fetch it when
1.766 + // we first need it and cache the result.
1.767 + if (!mApzcTreeManager) {
1.768 + mApzcTreeManager = CompositorParent::GetAPZCTreeManager(mLayersId);
1.769 + }
1.770 + return mApzcTreeManager.get();
1.771 +}
1.772 +
1.773 +RenderFrameParent::~RenderFrameParent()
1.774 +{}
1.775 +
1.776 +void
1.777 +RenderFrameParent::Destroy()
1.778 +{
1.779 + size_t numChildren = ManagedPLayerTransactionParent().Length();
1.780 + NS_ABORT_IF_FALSE(0 == numChildren || 1 == numChildren,
1.781 + "render frame must only have 0 or 1 layer manager");
1.782 +
1.783 + if (numChildren) {
1.784 + LayerTransactionParent* layers =
1.785 + static_cast<LayerTransactionParent*>(ManagedPLayerTransactionParent()[0]);
1.786 + layers->Destroy();
1.787 + }
1.788 +
1.789 + mFrameLoaderDestroyed = true;
1.790 +}
1.791 +
1.792 +nsContentView*
1.793 +RenderFrameParent::GetContentView(ViewID aId)
1.794 +{
1.795 + return FindViewForId(mContentViews, aId);
1.796 +}
1.797 +
1.798 +nsContentView*
1.799 +RenderFrameParent::GetRootContentView()
1.800 +{
1.801 + return FindRootView(mContentViews);
1.802 +}
1.803 +
1.804 +void
1.805 +RenderFrameParent::ContentViewScaleChanged(nsContentView* aView)
1.806 +{
1.807 + // Since the scale has changed for a view, it and its descendents need their
1.808 + // shadow-space attributes updated. It's easiest to rebuild the view map.
1.809 + BuildViewMap();
1.810 +}
1.811 +
1.812 +void
1.813 +RenderFrameParent::ShadowLayersUpdated(LayerTransactionParent* aLayerTree,
1.814 + const TargetConfig& aTargetConfig,
1.815 + bool aIsFirstPaint,
1.816 + bool aScheduleComposite)
1.817 +{
1.818 + // View map must only contain views that are associated with the current
1.819 + // shadow layer tree. We must always update the map when shadow layers
1.820 + // are updated.
1.821 + BuildViewMap();
1.822 +
1.823 + TriggerRepaint();
1.824 +}
1.825 +
1.826 +already_AddRefed<Layer>
1.827 +RenderFrameParent::BuildLayer(nsDisplayListBuilder* aBuilder,
1.828 + nsIFrame* aFrame,
1.829 + LayerManager* aManager,
1.830 + const nsIntRect& aVisibleRect,
1.831 + nsDisplayItem* aItem,
1.832 + const ContainerLayerParameters& aContainerParameters)
1.833 +{
1.834 + NS_ABORT_IF_FALSE(aFrame,
1.835 + "makes no sense to have a shadow tree without a frame");
1.836 + NS_ABORT_IF_FALSE(!mContainer ||
1.837 + IsTempLayerManager(aManager) ||
1.838 + mContainer->Manager() == aManager,
1.839 + "retaining manager changed out from under us ... HELP!");
1.840 +
1.841 + if (IsTempLayerManager(aManager) ||
1.842 + (mContainer && mContainer->Manager() != aManager)) {
1.843 + // This can happen if aManager is a "temporary" manager, or if the
1.844 + // widget's layer manager changed out from under us. We need to
1.845 + // FIXME handle the former case somehow, probably with an API to
1.846 + // draw a manager's subtree. The latter is bad bad bad, but the
1.847 + // the NS_ABORT_IF_FALSE() above will flag it. Returning nullptr
1.848 + // here will just cause the shadow subtree not to be rendered.
1.849 + NS_WARNING("Remote iframe not rendered");
1.850 + return nullptr;
1.851 + }
1.852 +
1.853 + uint64_t id = GetLayerTreeId();
1.854 + if (0 != id) {
1.855 + MOZ_ASSERT(!GetRootLayer());
1.856 +
1.857 + nsRefPtr<Layer> layer =
1.858 + (aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, aItem));
1.859 + if (!layer) {
1.860 + layer = aManager->CreateRefLayer();
1.861 + }
1.862 + if (!layer) {
1.863 + // Probably a temporary layer manager that doesn't know how to
1.864 + // use ref layers.
1.865 + return nullptr;
1.866 + }
1.867 + static_cast<RefLayer*>(layer.get())->SetReferentId(id);
1.868 + nsIntPoint offset = GetContentRectLayerOffset(aFrame, aBuilder);
1.869 + layer->SetVisibleRegion(aVisibleRect - offset);
1.870 + // We can only have an offset if we're a child of an inactive
1.871 + // container, but our display item is LAYER_ACTIVE_FORCE which
1.872 + // forces all layers above to be active.
1.873 + MOZ_ASSERT(aContainerParameters.mOffset == nsIntPoint());
1.874 + gfx::Matrix4x4 m;
1.875 + m.Translate(offset.x, offset.y, 0.0);
1.876 + // Remote content can't be repainted by us, so we multiply down
1.877 + // the resolution that our container expects onto our container.
1.878 + m.Scale(aContainerParameters.mXScale, aContainerParameters.mYScale, 1.0);
1.879 + layer->SetBaseTransform(m);
1.880 +
1.881 + return layer.forget();
1.882 + }
1.883 +
1.884 + if (mContainer) {
1.885 + ClearContainer(mContainer);
1.886 + mContainer->SetPreScale(1.0f, 1.0f);
1.887 + mContainer->SetPostScale(1.0f, 1.0f);
1.888 + mContainer->SetInheritedScale(1.0f, 1.0f);
1.889 + }
1.890 +
1.891 + Layer* shadowRoot = GetRootLayer();
1.892 + if (!shadowRoot) {
1.893 + mContainer = nullptr;
1.894 + return nullptr;
1.895 + }
1.896 +
1.897 + NS_ABORT_IF_FALSE(!shadowRoot || shadowRoot->Manager() == aManager,
1.898 + "retaining manager changed out from under us ... HELP!");
1.899 +
1.900 + // Wrap the shadow layer tree in mContainer.
1.901 + if (!mContainer) {
1.902 + mContainer = aManager->CreateContainerLayer();
1.903 + }
1.904 + NS_ABORT_IF_FALSE(!mContainer->GetFirstChild(),
1.905 + "container of shadow tree shouldn't have a 'root' here");
1.906 +
1.907 + mContainer->InsertAfter(shadowRoot, nullptr);
1.908 +
1.909 + AssertInTopLevelChromeDoc(mContainer, aFrame);
1.910 + ViewTransform transform;
1.911 + TransformShadowTree(aBuilder, mFrameLoader, aFrame, shadowRoot, transform);
1.912 + mContainer->SetClipRect(nullptr);
1.913 +
1.914 + if (mFrameLoader->AsyncScrollEnabled()) {
1.915 + const nsContentView* view = GetRootContentView();
1.916 + BuildBackgroundPatternFor(mContainer,
1.917 + shadowRoot,
1.918 + view->GetViewConfig(),
1.919 + mBackgroundColor,
1.920 + aManager, aFrame);
1.921 + }
1.922 + mContainer->SetVisibleRegion(aVisibleRect);
1.923 +
1.924 + return nsRefPtr<Layer>(mContainer).forget();
1.925 +}
1.926 +
1.927 +void
1.928 +RenderFrameParent::OwnerContentChanged(nsIContent* aContent)
1.929 +{
1.930 + NS_ABORT_IF_FALSE(mFrameLoader->GetOwnerContent() == aContent,
1.931 + "Don't build new map if owner is same!");
1.932 + BuildViewMap();
1.933 +}
1.934 +
1.935 +void
1.936 +RenderFrameParent::NotifyInputEvent(WidgetInputEvent& aEvent,
1.937 + ScrollableLayerGuid* aOutTargetGuid)
1.938 +{
1.939 + if (GetApzcTreeManager()) {
1.940 + GetApzcTreeManager()->ReceiveInputEvent(aEvent, aOutTargetGuid);
1.941 + }
1.942 +}
1.943 +
1.944 +void
1.945 +RenderFrameParent::ActorDestroy(ActorDestroyReason why)
1.946 +{
1.947 + if (mLayersId != 0) {
1.948 + CompositorParent::DeallocateLayerTreeId(mLayersId);
1.949 + if (mContentController) {
1.950 + // Stop our content controller from requesting repaints of our
1.951 + // content.
1.952 + mContentController->ClearRenderFrame();
1.953 + // TODO: notify the compositor?
1.954 + }
1.955 + }
1.956 +
1.957 + if (mFrameLoader && mFrameLoader->GetCurrentRemoteFrame() == this) {
1.958 + // XXX this might cause some weird issues ... we'll just not
1.959 + // redraw the part of the window covered by this until the "next"
1.960 + // remote frame has a layer-tree transaction. For
1.961 + // why==NormalShutdown, we'll definitely want to do something
1.962 + // better, especially as nothing guarantees another Update() from
1.963 + // the "next" remote layer tree.
1.964 + mFrameLoader->SetCurrentRemoteFrame(nullptr);
1.965 + }
1.966 + mFrameLoader = nullptr;
1.967 +}
1.968 +
1.969 +bool
1.970 +RenderFrameParent::RecvNotifyCompositorTransaction()
1.971 +{
1.972 + TriggerRepaint();
1.973 + return true;
1.974 +}
1.975 +
1.976 +bool
1.977 +RenderFrameParent::RecvUpdateHitRegion(const nsRegion& aRegion)
1.978 +{
1.979 + mTouchRegion = aRegion;
1.980 + if (mContentController) {
1.981 + // Tell the content controller about the touch-sensitive region, so
1.982 + // that it can provide it to APZ. This is required for APZ to do
1.983 + // correct hit testing for a remote 'mozpasspointerevents' iframe
1.984 + // until bug 928833 is fixed.
1.985 + mContentController->SetTouchSensitiveRegion(aRegion);
1.986 + }
1.987 + return true;
1.988 +}
1.989 +
1.990 +PLayerTransactionParent*
1.991 +RenderFrameParent::AllocPLayerTransactionParent()
1.992 +{
1.993 + if (!mFrameLoader || mFrameLoaderDestroyed) {
1.994 + return nullptr;
1.995 + }
1.996 + nsRefPtr<LayerManager> lm = GetFrom(mFrameLoader);
1.997 + LayerTransactionParent* result = new LayerTransactionParent(lm->AsLayerManagerComposite(), this, 0);
1.998 + result->AddIPDLReference();
1.999 + return result;
1.1000 +}
1.1001 +
1.1002 +bool
1.1003 +RenderFrameParent::DeallocPLayerTransactionParent(PLayerTransactionParent* aLayers)
1.1004 +{
1.1005 + static_cast<LayerTransactionParent*>(aLayers)->ReleaseIPDLReference();
1.1006 + return true;
1.1007 +}
1.1008 +
1.1009 +void
1.1010 +RenderFrameParent::BuildViewMap()
1.1011 +{
1.1012 + ViewMap newContentViews;
1.1013 + // BuildViewMap assumes we have a primary frame, which may not be the case.
1.1014 + if (GetRootLayer() && mFrameLoader->GetPrimaryFrameOfOwningContent()) {
1.1015 + // Some of the content views in our hash map may no longer be active. To
1.1016 + // tag them as inactive and to remove any chance of them using a dangling
1.1017 + // pointer, we set mContentView to nullptr.
1.1018 + //
1.1019 + // BuildViewMap will restore mFrameLoader if the content view is still
1.1020 + // in our hash table.
1.1021 +
1.1022 + for (ViewMap::const_iterator iter = mContentViews.begin();
1.1023 + iter != mContentViews.end();
1.1024 + ++iter) {
1.1025 + iter->second->mFrameLoader = nullptr;
1.1026 + }
1.1027 +
1.1028 + mozilla::layout::BuildViewMap(mContentViews, newContentViews, mFrameLoader, GetRootLayer());
1.1029 + }
1.1030 +
1.1031 + // Here, we guarantee that *only* the root view is preserved in
1.1032 + // case we couldn't build a new view map above. This is important because
1.1033 + // the content view map should only contain the root view and content
1.1034 + // views that are present in the layer tree.
1.1035 + if (newContentViews.empty()) {
1.1036 + nsContentView* rootView = FindRootView(mContentViews);
1.1037 + if (rootView)
1.1038 + newContentViews[rootView->GetId()] = rootView;
1.1039 + }
1.1040 +
1.1041 + mContentViews = newContentViews;
1.1042 +}
1.1043 +
1.1044 +void
1.1045 +RenderFrameParent::TriggerRepaint()
1.1046 +{
1.1047 + mFrameLoader->SetCurrentRemoteFrame(this);
1.1048 +
1.1049 + nsIFrame* docFrame = mFrameLoader->GetPrimaryFrameOfOwningContent();
1.1050 + if (!docFrame) {
1.1051 + // Bad, but nothing we can do about it (XXX/cjones: or is there?
1.1052 + // maybe bug 589337?). When the new frame is created, we'll
1.1053 + // probably still be the current render frame and will get to draw
1.1054 + // our content then. Or, we're shutting down and this update goes
1.1055 + // to /dev/null.
1.1056 + return;
1.1057 + }
1.1058 +
1.1059 + docFrame->InvalidateLayer(nsDisplayItem::TYPE_REMOTE);
1.1060 +}
1.1061 +
1.1062 +LayerTransactionParent*
1.1063 +RenderFrameParent::GetShadowLayers() const
1.1064 +{
1.1065 + const InfallibleTArray<PLayerTransactionParent*>& shadowParents = ManagedPLayerTransactionParent();
1.1066 + NS_ABORT_IF_FALSE(shadowParents.Length() <= 1,
1.1067 + "can only support at most 1 LayerTransactionParent");
1.1068 + return (shadowParents.Length() == 1) ?
1.1069 + static_cast<LayerTransactionParent*>(shadowParents[0]) : nullptr;
1.1070 +}
1.1071 +
1.1072 +uint64_t
1.1073 +RenderFrameParent::GetLayerTreeId() const
1.1074 +{
1.1075 + return mLayersId;
1.1076 +}
1.1077 +
1.1078 +Layer*
1.1079 +RenderFrameParent::GetRootLayer() const
1.1080 +{
1.1081 + LayerTransactionParent* shadowLayers = GetShadowLayers();
1.1082 + return shadowLayers ? shadowLayers->GetRoot() : nullptr;
1.1083 +}
1.1084 +
1.1085 +void
1.1086 +RenderFrameParent::BuildDisplayList(nsDisplayListBuilder* aBuilder,
1.1087 + nsSubDocumentFrame* aFrame,
1.1088 + const nsRect& aDirtyRect,
1.1089 + const nsDisplayListSet& aLists)
1.1090 +{
1.1091 + // We're the subdoc for <browser remote="true"> and it has
1.1092 + // painted content. Display its shadow layer tree.
1.1093 + DisplayListClipState::AutoSaveRestore clipState(aBuilder);
1.1094 +
1.1095 + nsPoint offset = aBuilder->ToReferenceFrame(aFrame);
1.1096 + nsRect bounds = aFrame->EnsureInnerView()->GetBounds() + offset;
1.1097 + clipState.ClipContentDescendants(bounds);
1.1098 +
1.1099 + Layer* container = GetRootLayer();
1.1100 + if (aBuilder->IsForEventDelivery() && container) {
1.1101 + ViewTransform offset =
1.1102 + ViewTransform(GetContentRectLayerOffset(aFrame, aBuilder));
1.1103 + BuildListForLayer(container, mFrameLoader, offset,
1.1104 + aBuilder, *aLists.Content(), aFrame);
1.1105 + } else {
1.1106 + aLists.Content()->AppendToTop(
1.1107 + new (aBuilder) nsDisplayRemote(aBuilder, aFrame, this));
1.1108 + }
1.1109 +}
1.1110 +
1.1111 +void
1.1112 +RenderFrameParent::ZoomToRect(uint32_t aPresShellId, ViewID aViewId,
1.1113 + const CSSRect& aRect)
1.1114 +{
1.1115 + if (GetApzcTreeManager()) {
1.1116 + GetApzcTreeManager()->ZoomToRect(ScrollableLayerGuid(mLayersId, aPresShellId, aViewId),
1.1117 + aRect);
1.1118 + }
1.1119 +}
1.1120 +
1.1121 +void
1.1122 +RenderFrameParent::ContentReceivedTouch(const ScrollableLayerGuid& aGuid,
1.1123 + bool aPreventDefault)
1.1124 +{
1.1125 + if (aGuid.mLayersId != mLayersId) {
1.1126 + // Guard against bad data from hijacked child processes
1.1127 + NS_ERROR("Unexpected layers id in ContentReceivedTouch; dropping message...");
1.1128 + return;
1.1129 + }
1.1130 + if (GetApzcTreeManager()) {
1.1131 + GetApzcTreeManager()->ContentReceivedTouch(aGuid, aPreventDefault);
1.1132 + }
1.1133 +}
1.1134 +
1.1135 +void
1.1136 +RenderFrameParent::UpdateZoomConstraints(uint32_t aPresShellId,
1.1137 + ViewID aViewId,
1.1138 + bool aIsRoot,
1.1139 + const ZoomConstraints& aConstraints)
1.1140 +{
1.1141 + if (mContentController && aIsRoot) {
1.1142 + mContentController->SaveZoomConstraints(aConstraints);
1.1143 + }
1.1144 + if (GetApzcTreeManager()) {
1.1145 + GetApzcTreeManager()->UpdateZoomConstraints(ScrollableLayerGuid(mLayersId, aPresShellId, aViewId),
1.1146 + aConstraints);
1.1147 + }
1.1148 +}
1.1149 +
1.1150 +bool
1.1151 +RenderFrameParent::HitTest(const nsRect& aRect)
1.1152 +{
1.1153 + return mTouchRegion.Contains(aRect);
1.1154 +}
1.1155 +
1.1156 +} // namespace layout
1.1157 +} // namespace mozilla
1.1158 +
1.1159 +already_AddRefed<Layer>
1.1160 +nsDisplayRemote::BuildLayer(nsDisplayListBuilder* aBuilder,
1.1161 + LayerManager* aManager,
1.1162 + const ContainerLayerParameters& aContainerParameters)
1.1163 +{
1.1164 + int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
1.1165 + nsIntRect visibleRect = GetVisibleRect().ToNearestPixels(appUnitsPerDevPixel);
1.1166 + visibleRect += aContainerParameters.mOffset;
1.1167 + nsRefPtr<Layer> layer = mRemoteFrame->BuildLayer(aBuilder, mFrame, aManager, visibleRect, this, aContainerParameters);
1.1168 + return layer.forget();
1.1169 +}
1.1170 +
1.1171 +void
1.1172 +nsDisplayRemote::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
1.1173 + HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
1.1174 +{
1.1175 + if (mRemoteFrame->HitTest(aRect)) {
1.1176 + aOutFrames->AppendElement(mFrame);
1.1177 + }
1.1178 +}
1.1179 +
1.1180 +void
1.1181 +nsDisplayRemoteShadow::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
1.1182 + HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
1.1183 +{
1.1184 + // If we are here, then rects have intersected.
1.1185 + //
1.1186 + // XXX I think iframes and divs can be rounded like anything else but we don't
1.1187 + // cover that case here.
1.1188 + //
1.1189 + if (aState->mShadows) {
1.1190 + aState->mShadows->AppendElement(mId);
1.1191 + }
1.1192 +}
