LCOV - app.info - layout/ipc/RenderFrameParent.cpp

LCOV - code coverage report
| Current view: | directory - layout/ipc - RenderFrameParent.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 289 | 0 | 0.0 %
| Date: | 2012-07-07 | Functions: | 38 | 0 | 0.0 %

           1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
           2                 :  * vim: sw=2 ts=8 et :
           3                 :  */
           4                 : /* ***** BEGIN LICENSE BLOCK *****
           5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           6                 :  *
           7                 :  * The contents of this file are subject to the Mozilla Public License Version
           8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           9                 :  * the License. You may obtain a copy of the License at:
          10                 :  * http://www.mozilla.org/MPL/
          11                 :  *
          12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          14                 :  * for the specific language governing rights and limitations under the
          15                 :  * License.
          16                 :  *
          17                 :  * The Original Code is Mozilla Code.
          18                 :  *
          19                 :  * The Initial Developer of the Original Code is
          20                 :  *   The Mozilla Foundation
          21                 :  * Portions created by the Initial Developer are Copyright (C) 2010
          22                 :  * the Initial Developer. All Rights Reserved.
          23                 :  *
          24                 :  * Contributor(s):
          25                 :  *   Chris Jones <jones.chris.g@gmail.com>
          26                 :  *
          27                 :  * Alternatively, the contents of this file may be used under the terms of
          28                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          29                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          31                 :  * of those above. If you wish to allow use of your version of this file only
          32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          33                 :  * use your version of this file under the terms of the MPL, indicate your
          34                 :  * decision by deleting the provisions above and replace them with the notice
          35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          36                 :  * the provisions above, a recipient may use your version of this file under
          37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          38                 :  *
          39                 :  * ***** END LICENSE BLOCK ***** */
          40                 :
          41                 : #include "mozilla/layers/ShadowLayersParent.h"
          42                 :
          43                 : #include "BasicLayers.h"
          44                 : #include "LayerManagerOGL.h"
          45                 : #ifdef MOZ_ENABLE_D3D9_LAYER
          46                 : #include "LayerManagerD3D9.h"
          47                 : #endif //MOZ_ENABLE_D3D9_LAYER
          48                 : #include "RenderFrameParent.h"
          49                 :
          50                 : #include "gfx3DMatrix.h"
          51                 : #include "nsFrameLoader.h"
          52                 : #include "nsViewportFrame.h"
          53                 : #include "nsSubDocumentFrame.h"
          54                 : #include "nsIObserver.h"
          55                 :
          56                 : typedef nsContentView::ViewConfig ViewConfig;
          57                 : using namespace mozilla::layers;
          58                 :
          59                 : namespace mozilla {
          60                 : namespace layout {
          61                 :
          62                 : typedef FrameMetrics::ViewID ViewID;
          63                 : typedef RenderFrameParent::ViewMap ViewMap;
          64                 :
          65                 : // Represents (affine) transforms that are calculated from a content view.
          66               0 : struct ViewTransform {
          67               0 :   ViewTransform(nsIntPoint aTranslation = nsIntPoint(0, 0), float aXScale = 1, float aYScale = 1)
          68                 :     : mTranslation(aTranslation)
          69                 :     , mXScale(aXScale)
          70               0 :     , mYScale(aYScale)
          71               0 :   {}
          72                 :
          73               0 :   operator gfx3DMatrix() const
          74                 :   {
          75                 :     return
          76               0 :       gfx3DMatrix::ScalingMatrix(mXScale, mYScale, 1) *
          77               0 :       gfx3DMatrix::Translation(mTranslation.x, mTranslation.y, 0);
          78                 :   }
          79                 :
          80                 :   nsIntPoint mTranslation;
          81                 :   float mXScale;
          82                 :   float mYScale;
          83                 : };
          84                 :
          85                 : // Matrix helpers
          86                 : // For our simple purposes, these helpers apply to 2D affine transformations
          87                 : // that can be represented by a scale and a translation. This makes the math
          88                 : // much easier because we only expect the diagonals and the translation
          89                 : // coordinates of the matrix to be non-zero.
          90                 :
          91               0 : static double GetXScale(const gfx3DMatrix& aTransform)
          92                 : {
          93               0 :   return aTransform._11;
          94                 : }
          95                 :
          96               0 : static double GetYScale(const gfx3DMatrix& aTransform)
          97                 : {
          98               0 :   return aTransform._22;
          99                 : }
         100                 :
         101               0 : static void Scale(gfx3DMatrix& aTransform, double aXScale, double aYScale)
         102                 : {
         103               0 :   aTransform._11 *= aXScale;
         104               0 :   aTransform._22 *= aYScale;
         105               0 : }
         106                 :
         107               0 : static void ReverseTranslate(gfx3DMatrix& aTransform, ViewTransform& aViewTransform)
         108                 : {
         109               0 :   aTransform._41 -= aViewTransform.mTranslation.x / aViewTransform.mXScale;
         110               0 :   aTransform._42 -= aViewTransform.mTranslation.y / aViewTransform.mYScale;
         111               0 : }
         112                 :
         113                 :
         114               0 : static void ApplyTransform(nsRect& aRect,
         115                 :                            gfx3DMatrix& aTransform,
         116                 :                            nscoord auPerDevPixel)
         117                 : {
         118               0 :   aRect.x = aRect.x * aTransform._11 + aTransform._41 * auPerDevPixel;
         119               0 :   aRect.y = aRect.y * aTransform._22 + aTransform._42 * auPerDevPixel;
         120               0 :   aRect.width = aRect.width * aTransform._11;
         121               0 :   aRect.height = aRect.height * aTransform._22;
         122               0 : }
         123                 :
         124                 : static void
         125               0 : AssertInTopLevelChromeDoc(ContainerLayer* aContainer,
         126                 :                           nsIFrame* aContainedFrame)
         127                 : {
         128               0 :   NS_ASSERTION(
         129                 :     (aContainer->Manager()->GetBackendType() != LayerManager::LAYERS_BASIC) ||
         130                 :     (aContainedFrame->GetNearestWidget() ==
         131                 :      static_cast<BasicLayerManager*>(aContainer->Manager())->GetRetainerWidget()),
         132                 :     "Expected frame to be in top-level chrome document");
         133               0 : }
         134                 :
         135                 : // Return view for given ID in aArray, NULL if not found.
         136                 : static nsContentView*
         137               0 : FindViewForId(const ViewMap& aMap, ViewID aId)
         138                 : {
         139               0 :   ViewMap::const_iterator iter = aMap.find(aId);
         140               0 :   return iter != aMap.end() ? iter->second : NULL;
         141                 : }
         142                 :
         143                 : static const FrameMetrics*
         144               0 : GetFrameMetrics(Layer* aLayer)
         145                 : {
         146               0 :   ContainerLayer* container = aLayer->AsContainerLayer();
         147               0 :   return container ? &container->GetFrameMetrics() : NULL;
         148                 : }
         149                 :
         150                 : static nsIntPoint
         151               0 : GetRootFrameOffset(nsIFrame* aContainerFrame, nsDisplayListBuilder* aBuilder)
         152                 : {
         153               0 :   nscoord auPerDevPixel = aContainerFrame->PresContext()->AppUnitsPerDevPixel();
         154                 :
         155                 :   // Offset to the content rect in case we have borders or padding
         156                 :   nsPoint frameOffset =
         157               0 :     (aBuilder->ToReferenceFrame(aContainerFrame->GetParent()) +
         158               0 :      aContainerFrame->GetContentRect().TopLeft());
         159                 :
         160               0 :   return frameOffset.ToNearestPixels(auPerDevPixel);
         161                 : }
         162                 :
         163                 : // Compute the transform of the shadow tree contained by
         164                 : // |aContainerFrame| to widget space.  We transform because the
         165                 : // subprocess layer manager renders to a different top-left than where
         166                 : // the shadow tree is drawn here and because a scale can be set on the
         167                 : // shadow tree.
         168                 : static ViewTransform
         169               0 : ComputeShadowTreeTransform(nsIFrame* aContainerFrame,
         170                 :                            nsFrameLoader* aRootFrameLoader,
         171                 :                            const FrameMetrics* aMetrics,
         172                 :                            const ViewConfig& aConfig,
         173                 :                            float aTempScaleX = 1.0,
         174                 :                            float aTempScaleY = 1.0)
         175                 : {
         176                 :   // |aMetrics->mViewportScrollOffset| The frame's scroll offset when it was
         177                 :   //                                   painted, in content document pixels.
         178                 :   // |aConfig.mScrollOffset|           What our user expects, or wants, the
         179                 :   //                                   frame scroll offset to be in chrome
         180                 :   //                                   document app units.
         181                 :   //
         182                 :   // So we set a compensating translation that moves the content document
         183                 :   // pixels to where the user wants them to be.
         184                 :   //
         185               0 :   nscoord auPerDevPixel = aContainerFrame->PresContext()->AppUnitsPerDevPixel();
         186                 :   nsIntPoint scrollOffset =
         187               0 :     aConfig.mScrollOffset.ToNearestPixels(auPerDevPixel);
         188                 :   // metricsScrollOffset is in layer coordinates.
         189               0 :   nsIntPoint metricsScrollOffset = aMetrics->mViewportScrollOffset;
         190                 :
         191               0 :   if (aRootFrameLoader->AsyncScrollEnabled() && !aMetrics->mDisplayPort.IsEmpty()) {
         192                 :     // Only use asynchronous scrolling if it is enabled and there is a
         193                 :     // displayport defined. It is useful to have a scroll layer that is
         194                 :     // synchronously scrolled for identifying a scroll area before it is
         195                 :     // being actively scrolled.
         196                 :     nsIntPoint scrollCompensation(
         197                 :       (scrollOffset.x / aTempScaleX - metricsScrollOffset.x) * aConfig.mXScale,
         198               0 :       (scrollOffset.y / aTempScaleY - metricsScrollOffset.y) * aConfig.mYScale);
         199                 :
         200               0 :     return ViewTransform(-scrollCompensation, aConfig.mXScale, aConfig.mYScale);
         201                 :   } else {
         202               0 :     return ViewTransform(nsIntPoint(0, 0), 1, 1);
         203                 :   }
         204                 : }
         205                 :
         206                 : // Use shadow layer tree to build display list for the browser's frame.
         207                 : static void
         208               0 : BuildListForLayer(Layer* aLayer,
         209                 :                   nsFrameLoader* aRootFrameLoader,
         210                 :                   const gfx3DMatrix& aTransform,
         211                 :                   nsDisplayListBuilder* aBuilder,
         212                 :                   nsDisplayList& aShadowTree,
         213                 :                   nsIFrame* aSubdocFrame)
         214                 : {
         215               0 :   const FrameMetrics* metrics = GetFrameMetrics(aLayer);
         216                 :
         217               0 :   gfx3DMatrix transform;
         218                 :
         219               0 :   if (metrics && metrics->IsScrollable()) {
         220               0 :     const ViewID scrollId = metrics->mScrollId;
         221                 :
         222                 :     // We need to figure out the bounds of the scrollable region using the
         223                 :     // shadow layer tree from the remote process. The metrics viewport is
         224                 :     // defined based on all the transformations of its parent layers and
         225                 :     // the scale of the current layer.
         226                 :
         227                 :     // Calculate transform for this layer.
         228                 :     nsContentView* view =
         229               0 :       aRootFrameLoader->GetCurrentRemoteFrame()->GetContentView(scrollId);
         230                 :     // XXX why don't we include aLayer->GetTransform() in the inverse-scale here?
         231                 :     // This seems wrong, but it doesn't seem to cause bugs!
         232                 :     gfx3DMatrix applyTransform = ComputeShadowTreeTransform(
         233                 :       aSubdocFrame, aRootFrameLoader, metrics, view->GetViewConfig(),
         234               0 :       1 / GetXScale(aTransform), 1 / GetYScale(aTransform));
         235               0 :     transform = applyTransform * aLayer->GetTransform() * aTransform;
         236                 :
         237                 :     // As mentioned above, bounds calculation also depends on the scale
         238                 :     // of this layer.
         239               0 :     gfx3DMatrix tmpTransform = aTransform;
         240               0 :     Scale(tmpTransform, GetXScale(applyTransform), GetYScale(applyTransform));
         241                 :
         242                 :     // Calculate rect for this layer based on aTransform.
         243               0 :     nsRect bounds;
         244                 :     {
         245               0 :       nscoord auPerDevPixel = aSubdocFrame->PresContext()->AppUnitsPerDevPixel();
         246               0 :       bounds = metrics->mViewport.ToAppUnits(auPerDevPixel);
         247               0 :       ApplyTransform(bounds, tmpTransform, auPerDevPixel);
         248                 :
         249                 :     }
         250                 :
         251                 :     aShadowTree.AppendToTop(
         252               0 :       new (aBuilder) nsDisplayRemoteShadow(aBuilder, aSubdocFrame, bounds, scrollId));
         253                 :
         254                 :   } else {
         255               0 :     transform = aLayer->GetTransform() * aTransform;
         256                 :   }
         257                 :
         258               0 :   for (Layer* child = aLayer->GetFirstChild(); child;
         259                 :        child = child->GetNextSibling()) {
         260                 :     BuildListForLayer(child, aRootFrameLoader, transform,
         261               0 :                       aBuilder, aShadowTree, aSubdocFrame);
         262                 :   }
         263               0 : }
         264                 :
         265                 : // Go down shadow layer tree and apply transformations for scrollable layers.
         266                 : static void
         267               0 : TransformShadowTree(nsDisplayListBuilder* aBuilder, nsFrameLoader* aFrameLoader,
         268                 :                     nsIFrame* aFrame, Layer* aLayer,
         269                 :                     const ViewTransform& aTransform,
         270                 :                     float aTempScaleDiffX = 1.0,
         271                 :                     float aTempScaleDiffY = 1.0)
         272                 : {
         273               0 :   ShadowLayer* shadow = aLayer->AsShadowLayer();
         274               0 :   shadow->SetShadowClipRect(aLayer->GetClipRect());
         275               0 :   shadow->SetShadowVisibleRegion(aLayer->GetVisibleRegion());
         276                 :
         277               0 :   const FrameMetrics* metrics = GetFrameMetrics(aLayer);
         278                 :
         279               0 :   gfx3DMatrix shadowTransform = aLayer->GetTransform();
         280               0 :   ViewTransform layerTransform = aTransform;
         281                 :
         282               0 :   if (metrics && metrics->IsScrollable()) {
         283               0 :     const ViewID scrollId = metrics->mScrollId;
         284                 :     const nsContentView* view =
         285               0 :       aFrameLoader->GetCurrentRemoteFrame()->GetContentView(scrollId);
         286               0 :     NS_ABORT_IF_FALSE(view, "Array of views should be consistent with layer tree");
         287               0 :     const gfx3DMatrix& currentTransform = aLayer->GetTransform();
         288                 :
         289               0 :     const ViewConfig& config = view->GetViewConfig();
         290                 :     // With temporary scale we should compensate translation
         291                 :     // using temporary scale value
         292               0 :     aTempScaleDiffX *= GetXScale(shadowTransform) * config.mXScale;
         293               0 :     aTempScaleDiffY *= GetYScale(shadowTransform) * config.mYScale;
         294                 :     ViewTransform viewTransform = ComputeShadowTreeTransform(
         295                 :       aFrame, aFrameLoader, metrics, view->GetViewConfig(),
         296                 :       aTempScaleDiffX, aTempScaleDiffY
         297               0 :     );
         298                 :
         299                 :     // Apply the layer's own transform *before* the view transform
         300               0 :     shadowTransform = gfx3DMatrix(viewTransform) * currentTransform;
         301                 :
         302               0 :     layerTransform = viewTransform;
         303               0 :     if (metrics->IsRootScrollable()) {
         304                 :       // Apply the root frame translation *before* we do the rest of the transforms.
         305               0 :       nsIntPoint rootFrameOffset = GetRootFrameOffset(aFrame, aBuilder);
         306                 :       shadowTransform = shadowTransform *
         307               0 :           gfx3DMatrix::Translation(float(rootFrameOffset.x), float(rootFrameOffset.y), 0.0);
         308                 :     }
         309                 :   }
         310                 :
         311               0 :   if (aLayer->GetIsFixedPosition() &&
         312               0 :       !aLayer->GetParent()->GetIsFixedPosition()) {
         313               0 :     ReverseTranslate(shadowTransform, layerTransform);
         314               0 :     const nsIntRect* clipRect = shadow->GetShadowClipRect();
         315               0 :     if (clipRect) {
         316               0 :       nsIntRect transformedClipRect(*clipRect);
         317               0 :       transformedClipRect.MoveBy(shadowTransform._41, shadowTransform._42);
         318               0 :       shadow->SetShadowClipRect(&transformedClipRect);
         319                 :     }
         320                 :   }
         321                 :
         322               0 :   shadow->SetShadowTransform(shadowTransform);
         323               0 :   for (Layer* child = aLayer->GetFirstChild();
         324                 :        child; child = child->GetNextSibling()) {
         325                 :     TransformShadowTree(aBuilder, aFrameLoader, aFrame, child, layerTransform,
         326               0 :                         aTempScaleDiffX, aTempScaleDiffY);
         327                 :   }
         328               0 : }
         329                 :
         330                 : static void
         331               0 : ClearContainer(ContainerLayer* aContainer)
         332                 : {
         333               0 :   while (Layer* layer = aContainer->GetFirstChild()) {
         334               0 :     aContainer->RemoveChild(layer);
         335                 :   }
         336               0 : }
         337                 :
         338                 : // Return true iff |aManager| is a "temporary layer manager".  They're
         339                 : // used for small software rendering tasks, like drawWindow.  That's
         340                 : // currently implemented by a BasicLayerManager without a backing
         341                 : // widget, and hence in non-retained mode.
         342                 : static bool
         343               0 : IsTempLayerManager(LayerManager* aManager)
         344                 : {
         345               0 :   return (LayerManager::LAYERS_BASIC == aManager->GetBackendType() &&
         346               0 :           !static_cast<BasicLayerManager*>(aManager)->IsRetained());
         347                 : }
         348                 :
         349                 : // Recursively create a new array of scrollables, preserving any scrollables
         350                 : // that are still in the layer tree.
         351                 : //
         352                 : // aXScale and aYScale are used to calculate any values that need to be in
         353                 : // chrome-document CSS pixels and aren't part of the rendering loop, such as
         354                 : // the initial scroll offset for a new view.
         355                 : static void
         356               0 : BuildViewMap(ViewMap& oldContentViews, ViewMap& newContentViews,
         357                 :              nsFrameLoader* aFrameLoader, Layer* aLayer,
         358                 :              float aXScale = 1, float aYScale = 1,
         359                 :              float aAccConfigXScale = 1, float aAccConfigYScale = 1)
         360                 : {
         361               0 :   ContainerLayer* container = aLayer->AsContainerLayer();
         362               0 :   if (!container)
         363               0 :     return;
         364               0 :   const FrameMetrics metrics = container->GetFrameMetrics();
         365               0 :   const ViewID scrollId = metrics.mScrollId;
         366               0 :   const gfx3DMatrix transform = aLayer->GetTransform();
         367               0 :   aXScale *= GetXScale(transform);
         368               0 :   aYScale *= GetYScale(transform);
         369                 :
         370               0 :   if (metrics.IsScrollable()) {
         371                 :     nscoord auPerDevPixel = aFrameLoader->GetPrimaryFrameOfOwningContent()
         372               0 :                                         ->PresContext()->AppUnitsPerDevPixel();
         373               0 :     nsContentView* view = FindViewForId(oldContentViews, scrollId);
         374               0 :     if (view) {
         375                 :       // View already exists. Be sure to propagate scales for any values
         376                 :       // that need to be calculated something in chrome-doc CSS pixels.
         377               0 :       ViewConfig config = view->GetViewConfig();
         378               0 :       aXScale *= config.mXScale;
         379               0 :       aYScale *= config.mYScale;
         380               0 :       view->mFrameLoader = aFrameLoader;
         381                 :       // If scale has changed, then we should update
         382                 :       // current scroll offset to new scaled value
         383               0 :       if (aAccConfigXScale != view->mParentScaleX ||
         384                 :           aAccConfigYScale != view->mParentScaleY) {
         385               0 :         float xscroll = 0, yscroll = 0;
         386               0 :         view->GetScrollX(&xscroll);
         387               0 :         view->GetScrollY(&yscroll);
         388               0 :         xscroll = xscroll * (aAccConfigXScale / view->mParentScaleX);
         389               0 :         yscroll = yscroll * (aAccConfigYScale / view->mParentScaleY);
         390               0 :         view->ScrollTo(xscroll, yscroll);
         391               0 :         view->mParentScaleX = aAccConfigXScale;
         392               0 :         view->mParentScaleY = aAccConfigYScale;
         393                 :       }
         394                 :       // Collect only config scale values for scroll compensation
         395               0 :       aAccConfigXScale *= config.mXScale;
         396               0 :       aAccConfigYScale *= config.mYScale;
         397                 :     } else {
         398                 :       // View doesn't exist, so generate one. We start the view scroll offset at
         399                 :       // the same position as the framemetric's scroll offset from the layer.
         400                 :       // The default scale is 1, so no need to propagate scale down.
         401               0 :       ViewConfig config;
         402                 :       config.mScrollOffset = nsPoint(
         403               0 :         NSIntPixelsToAppUnits(metrics.mViewportScrollOffset.x, auPerDevPixel) * aXScale,
         404               0 :         NSIntPixelsToAppUnits(metrics.mViewportScrollOffset.y, auPerDevPixel) * aYScale);
         405               0 :       view = new nsContentView(aFrameLoader, scrollId, config);
         406               0 :       view->mParentScaleX = aAccConfigXScale;
         407               0 :       view->mParentScaleY = aAccConfigYScale;
         408                 :     }
         409                 :
         410                 :     view->mViewportSize = nsSize(
         411               0 :       NSIntPixelsToAppUnits(metrics.mViewport.width, auPerDevPixel) * aXScale,
         412               0 :       NSIntPixelsToAppUnits(metrics.mViewport.height, auPerDevPixel) * aYScale);
         413                 :     view->mContentSize = nsSize(
         414               0 :       NSIntPixelsToAppUnits(metrics.mContentSize.width, auPerDevPixel) * aXScale,
         415               0 :       NSIntPixelsToAppUnits(metrics.mContentSize.height, auPerDevPixel) * aYScale);
         416                 :
         417               0 :     newContentViews[scrollId] = view;
         418                 :   }
         419                 :
         420               0 :   for (Layer* child = aLayer->GetFirstChild();
         421                 :        child; child = child->GetNextSibling()) {
         422                 :     BuildViewMap(oldContentViews, newContentViews, aFrameLoader, child,
         423               0 :                  aXScale, aYScale, aAccConfigXScale, aAccConfigYScale);
         424                 :   }
         425                 : }
         426                 :
         427                 : static void
         428               0 : BuildBackgroundPatternFor(ContainerLayer* aContainer,
         429                 :                           ContainerLayer* aShadowRoot,
         430                 :                           const ViewConfig& aConfig,
         431                 :                           const gfxRGBA& aColor,
         432                 :                           LayerManager* aManager,
         433                 :                           nsIFrame* aFrame)
         434                 : {
         435               0 :   ShadowLayer* shadowRoot = aShadowRoot->AsShadowLayer();
         436               0 :   gfxMatrix t;
         437               0 :   if (!shadowRoot->GetShadowTransform().Is2D(&t)) {
         438               0 :     return;
         439                 :   }
         440                 :
         441                 :   // Get the rect bounding the shadow content, transformed into the
         442                 :   // same space as |aFrame|
         443               0 :   nsIntRect contentBounds = shadowRoot->GetShadowVisibleRegion().GetBounds();
         444                 :   gfxRect contentVis(contentBounds.x, contentBounds.y,
         445               0 :                      contentBounds.width, contentBounds.height);
         446               0 :   gfxRect localContentVis(t.Transform(contentVis));
         447                 :   // Round *in* here because this area is punched out of the background
         448               0 :   localContentVis.RoundIn();
         449               0 :   nsIntRect localIntContentVis(localContentVis.X(), localContentVis.Y(),
         450               0 :                                localContentVis.Width(), localContentVis.Height());
         451                 :
         452                 :   // Get the frame's rect
         453               0 :   nscoord auPerDevPixel = aFrame->PresContext()->AppUnitsPerDevPixel();
         454               0 :   nsIntRect frameRect = aFrame->GetRect().ToOutsidePixels(auPerDevPixel);
         455                 :
         456                 :   // If the shadow tree covers the frame rect, don't bother building
         457                 :   // the background, it wouldn't be visible
         458               0 :   if (localIntContentVis.Contains(frameRect)) {
         459               0 :     return;
         460                 :   }
         461               0 :   nsRefPtr<ColorLayer> layer = aManager->CreateColorLayer();
         462               0 :   layer->SetColor(aColor);
         463                 :
         464                 :   // The visible area of the background is the frame's area minus the
         465                 :   // content area
         466               0 :   nsIntRegion bgRgn(frameRect);
         467               0 :   bgRgn.Sub(bgRgn, localIntContentVis);
         468               0 :   bgRgn.MoveBy(-frameRect.TopLeft());
         469               0 :   layer->SetVisibleRegion(bgRgn);
         470                 :
         471               0 :   aContainer->InsertAfter(layer, nsnull);
         472                 : }
         473                 :
         474               0 : RenderFrameParent::RenderFrameParent(nsFrameLoader* aFrameLoader)
         475                 :   : mFrameLoader(aFrameLoader)
         476                 :   , mFrameLoaderDestroyed(false)
         477               0 :   , mBackgroundColor(gfxRGBA(1, 1, 1))
         478                 : {
         479               0 :   if (aFrameLoader) {
         480               0 :     mContentViews[FrameMetrics::ROOT_SCROLL_ID] =
         481               0 :       new nsContentView(aFrameLoader, FrameMetrics::ROOT_SCROLL_ID);
         482                 :   }
         483               0 : }
         484                 :
         485               0 : RenderFrameParent::~RenderFrameParent()
         486               0 : {}
         487                 :
         488                 : void
         489               0 : RenderFrameParent::Destroy()
         490                 : {
         491               0 :   size_t numChildren = ManagedPLayersParent().Length();
         492               0 :   NS_ABORT_IF_FALSE(0 == numChildren || 1 == numChildren,
         493                 :                     "render frame must only have 0 or 1 layer manager");
         494                 :
         495               0 :   if (numChildren) {
         496                 :     ShadowLayersParent* layers =
         497               0 :       static_cast<ShadowLayersParent*>(ManagedPLayersParent()[0]);
         498               0 :     layers->Destroy();
         499                 :   }
         500                 :
         501               0 :   mFrameLoaderDestroyed = true;
         502               0 : }
         503                 :
         504                 : nsContentView*
         505               0 : RenderFrameParent::GetContentView(ViewID aId)
         506                 : {
         507               0 :   return FindViewForId(mContentViews, aId);
         508                 : }
         509                 :
         510                 : void
         511               0 : RenderFrameParent::ContentViewScaleChanged(nsContentView* aView)
         512                 : {
         513                 :   // Since the scale has changed for a view, it and its descendents need their
         514                 :   // shadow-space attributes updated. It's easiest to rebuild the view map.
         515               0 :   BuildViewMap();
         516               0 : }
         517                 :
         518                 : void
         519               0 : RenderFrameParent::ShadowLayersUpdated()
         520                 : {
         521               0 :   mFrameLoader->SetCurrentRemoteFrame(this);
         522                 :
         523                 :   // View map must only contain views that are associated with the current
         524                 :   // shadow layer tree. We must always update the map when shadow layers
         525                 :   // are updated.
         526               0 :   BuildViewMap();
         527                 :
         528               0 :   nsIFrame* docFrame = mFrameLoader->GetPrimaryFrameOfOwningContent();
         529               0 :   if (!docFrame) {
         530                 :     // Bad, but nothing we can do about it (XXX/cjones: or is there?
         531                 :     // maybe bug 589337?).  When the new frame is created, we'll
         532                 :     // probably still be the current render frame and will get to draw
         533                 :     // our content then.  Or, we're shutting down and this update goes
         534                 :     // to /dev/null.
         535               0 :     return;
         536                 :   }
         537                 :
         538                 :   // FIXME/cjones: we should collect the rects/regions updated for
         539                 :   // Painted*Layer() calls and pass that region to here, then only
         540                 :   // invalidate that rect
         541                 :   //
         542                 :   // We pass INVALIDATE_NO_THEBES_LAYERS here because we're
         543                 :   // invalidating the <browser> on behalf of its counterpart in the
         544                 :   // content process.  Not only do we not need to invalidate the
         545                 :   // shadow layers, things would just break if we did --- we have no
         546                 :   // way to repaint shadow layers from this process.
         547               0 :   nsRect rect = nsRect(nsPoint(0, 0), docFrame->GetRect().Size());
         548               0 :   docFrame->InvalidateWithFlags(rect, nsIFrame::INVALIDATE_NO_THEBES_LAYERS);
         549                 : }
         550                 :
         551                 : already_AddRefed<Layer>
         552               0 : RenderFrameParent::BuildLayer(nsDisplayListBuilder* aBuilder,
         553                 :                               nsIFrame* aFrame,
         554                 :                               LayerManager* aManager,
         555                 :                               const nsIntRect& aVisibleRect)
         556                 : {
         557               0 :   NS_ABORT_IF_FALSE(aFrame,
         558                 :                     "makes no sense to have a shadow tree without a frame");
         559               0 :   NS_ABORT_IF_FALSE(!mContainer ||
         560                 :                     IsTempLayerManager(aManager) ||
         561                 :                     mContainer->Manager() == aManager,
         562                 :                     "retaining manager changed out from under us ... HELP!");
         563                 :
         564               0 :   if (mContainer && mContainer->Manager() != aManager) {
         565                 :     // This can happen if aManager is a "temporary" manager, or if the
         566                 :     // widget's layer manager changed out from under us.  We need to
         567                 :     // FIXME handle the former case somehow, probably with an API to
         568                 :     // draw a manager's subtree.  The latter is bad bad bad, but the
         569                 :     // the NS_ABORT_IF_FALSE() above will flag it.  Returning NULL
         570                 :     // here will just cause the shadow subtree not to be rendered.
         571               0 :     return nsnull;
         572                 :   }
         573                 :
         574               0 :   if (mContainer) {
         575               0 :     ClearContainer(mContainer);
         576                 :   }
         577                 :
         578               0 :   ContainerLayer* shadowRoot = GetRootLayer();
         579               0 :   if (!shadowRoot) {
         580               0 :     mContainer = nsnull;
         581               0 :     return nsnull;
         582                 :   }
         583                 :
         584               0 :   NS_ABORT_IF_FALSE(!shadowRoot || shadowRoot->Manager() == aManager,
         585                 :                     "retaining manager changed out from under us ... HELP!");
         586                 :
         587                 :   // Wrap the shadow layer tree in mContainer.
         588               0 :   if (!mContainer) {
         589               0 :     mContainer = aManager->CreateContainerLayer();
         590                 :   }
         591               0 :   NS_ABORT_IF_FALSE(!mContainer->GetFirstChild(),
         592                 :                     "container of shadow tree shouldn't have a 'root' here");
         593                 :
         594               0 :   mContainer->InsertAfter(shadowRoot, nsnull);
         595                 :
         596               0 :   AssertInTopLevelChromeDoc(mContainer, aFrame);
         597               0 :   ViewTransform transform;
         598               0 :   TransformShadowTree(aBuilder, mFrameLoader, aFrame, shadowRoot, transform);
         599               0 :   mContainer->SetClipRect(nsnull);
         600                 :
         601               0 :   if (mFrameLoader->AsyncScrollEnabled()) {
         602               0 :     const nsContentView* view = GetContentView(FrameMetrics::ROOT_SCROLL_ID);
         603                 :     BuildBackgroundPatternFor(mContainer,
         604                 :                               shadowRoot,
         605                 :                               view->GetViewConfig(),
         606                 :                               mBackgroundColor,
         607               0 :                               aManager, aFrame);
         608                 :   }
         609               0 :   mContainer->SetVisibleRegion(aVisibleRect);
         610                 :
         611               0 :   return nsRefPtr<Layer>(mContainer).forget();
         612                 : }
         613                 :
         614                 : void
         615               0 : RenderFrameParent::OwnerContentChanged(nsIContent* aContent)
         616                 : {
         617               0 :   NS_ABORT_IF_FALSE(mFrameLoader->GetOwnerContent() == aContent,
         618                 :                     "Don't build new map if owner is same!");
         619               0 :   BuildViewMap();
         620               0 : }
         621                 :
         622                 : void
         623               0 : RenderFrameParent::ActorDestroy(ActorDestroyReason why)
         624                 : {
         625               0 :   if (mFrameLoader && mFrameLoader->GetCurrentRemoteFrame() == this) {
         626                 :     // XXX this might cause some weird issues ... we'll just not
         627                 :     // redraw the part of the window covered by this until the "next"
         628                 :     // remote frame has a layer-tree transaction.  For
         629                 :     // why==NormalShutdown, we'll definitely want to do something
         630                 :     // better, especially as nothing guarantees another Update() from
         631                 :     // the "next" remote layer tree.
         632               0 :     mFrameLoader->SetCurrentRemoteFrame(nsnull);
         633                 :   }
         634               0 :   mFrameLoader = nsnull;
         635               0 : }
         636                 :
         637                 : PLayersParent*
         638               0 : RenderFrameParent::AllocPLayers(LayerManager::LayersBackend* aBackendType)
         639                 : {
         640               0 :   if (!mFrameLoader || mFrameLoaderDestroyed) {
         641               0 :     *aBackendType = LayerManager::LAYERS_NONE;
         642               0 :     return nsnull;
         643                 :   }
         644               0 :   LayerManager* lm = GetLayerManager();
         645               0 :   ShadowLayerManager* slm = lm->AsShadowManager();
         646               0 :   if (!slm) {
         647               0 :     *aBackendType = LayerManager::LAYERS_NONE;
         648               0 :      return nsnull;
         649                 :   }
         650               0 :   *aBackendType = lm->GetBackendType();
         651               0 :   return new ShadowLayersParent(slm, this);
         652                 : }
         653                 :
         654                 : bool
         655               0 : RenderFrameParent::DeallocPLayers(PLayersParent* aLayers)
         656                 : {
         657               0 :   delete aLayers;
         658               0 :   return true;
         659                 : }
         660                 :
         661                 : void
         662               0 : RenderFrameParent::BuildViewMap()
         663                 : {
         664               0 :   ViewMap newContentViews;
         665                 :   // BuildViewMap assumes we have a primary frame, which may not be the case.
         666               0 :   if (GetRootLayer() && mFrameLoader->GetPrimaryFrameOfOwningContent()) {
         667                 :     // Some of the content views in our hash map may no longer be active. To
         668                 :     // tag them as inactive and to remove any chance of them using a dangling
         669                 :     // pointer, we set mContentView to NULL.
         670                 :     //
         671                 :     // BuildViewMap will restore mFrameLoader if the content view is still
         672                 :     // in our hash table.
         673                 :
         674               0 :     for (ViewMap::const_iterator iter = mContentViews.begin();
         675               0 :          iter != mContentViews.end();
         676                 :          ++iter) {
         677               0 :       iter->second->mFrameLoader = NULL;
         678                 :     }
         679                 :
         680               0 :     mozilla::layout::BuildViewMap(mContentViews, newContentViews, mFrameLoader, GetRootLayer());
         681                 :   }
         682                 :
         683                 :   // Here, we guarantee that *only* the root view is preserved in
         684                 :   // case we couldn't build a new view map above. This is important because
         685                 :   // the content view map should only contain the root view and content
         686                 :   // views that are present in the layer tree.
         687               0 :   if (newContentViews.empty()) {
         688               0 :     newContentViews[FrameMetrics::ROOT_SCROLL_ID] =
         689               0 :       FindViewForId(mContentViews, FrameMetrics::ROOT_SCROLL_ID);
         690                 :   }
         691                 :
         692               0 :   mContentViews = newContentViews;
         693               0 : }
         694                 :
         695                 : LayerManager*
         696               0 : RenderFrameParent::GetLayerManager() const
         697                 : {
         698               0 :   nsIDocument* doc = mFrameLoader->OwnerDoc();
         699               0 :   return doc->GetShell()->GetLayerManager();
         700                 : }
         701                 :
         702                 : ShadowLayersParent*
         703               0 : RenderFrameParent::GetShadowLayers() const
         704                 : {
         705               0 :   const nsTArray<PLayersParent*>& shadowParents = ManagedPLayersParent();
         706               0 :   NS_ABORT_IF_FALSE(shadowParents.Length() <= 1,
         707                 :                     "can only support at most 1 ShadowLayersParent");
         708               0 :   return (shadowParents.Length() == 1) ?
         709               0 :     static_cast<ShadowLayersParent*>(shadowParents[0]) : nsnull;
         710                 : }
         711                 :
         712                 : ContainerLayer*
         713               0 : RenderFrameParent::GetRootLayer() const
         714                 : {
         715               0 :   ShadowLayersParent* shadowLayers = GetShadowLayers();
         716               0 :   return shadowLayers ? shadowLayers->GetRoot() : nsnull;
         717                 : }
         718                 :
         719                 : NS_IMETHODIMP
         720               0 : RenderFrameParent::BuildDisplayList(nsDisplayListBuilder* aBuilder,
         721                 :                                     nsSubDocumentFrame* aFrame,
         722                 :                                     const nsRect& aDirtyRect,
         723                 :                                     const nsDisplayListSet& aLists)
         724                 : {
         725                 :   // We're the subdoc for <browser remote="true"> and it has
         726                 :   // painted content.  Display its shadow layer tree.
         727               0 :   nsDisplayList shadowTree;
         728               0 :   ContainerLayer* container = GetRootLayer();
         729               0 :   if (aBuilder->IsForEventDelivery() && container) {
         730               0 :     nsRect bounds = aFrame->EnsureInnerView()->GetBounds();
         731                 :     ViewTransform offset =
         732               0 :       ViewTransform(GetRootFrameOffset(aFrame, aBuilder), 1, 1);
         733                 :     BuildListForLayer(container, mFrameLoader, offset,
         734               0 :                       aBuilder, shadowTree, aFrame);
         735                 :   } else {
         736                 :     shadowTree.AppendToTop(
         737               0 :       new (aBuilder) nsDisplayRemote(aBuilder, aFrame, this));
         738                 :   }
         739                 :
         740                 :   // Clip the shadow layers to subdoc bounds
         741               0 :   nsPoint offset = aFrame->GetOffsetToCrossDoc(aBuilder->ReferenceFrame());
         742               0 :   nsRect bounds = aFrame->EnsureInnerView()->GetBounds() + offset;
         743                 :
         744                 :   return aLists.Content()->AppendNewToTop(
         745                 :     new (aBuilder) nsDisplayClip(aBuilder, aFrame, &shadowTree,
         746               0 :                                  bounds));
         747                 : }
         748                 :
         749                 : }  // namespace layout
         750                 : }  // namespace mozilla
         751                 :
         752                 : already_AddRefed<Layer>
         753               0 : nsDisplayRemote::BuildLayer(nsDisplayListBuilder* aBuilder,
         754                 :                             LayerManager* aManager,
         755                 :                             const ContainerParameters& aContainerParameters)
         756                 : {
         757               0 :   PRInt32 appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
         758               0 :   nsIntRect visibleRect = GetVisibleRect().ToNearestPixels(appUnitsPerDevPixel);
         759               0 :   nsRefPtr<Layer> layer = mRemoteFrame->BuildLayer(aBuilder, mFrame, aManager, visibleRect);
         760               0 :   return layer.forget();
         761                 : }
         762                 :
         763                 :
         764                 : void
         765               0 : nsDisplayRemoteShadow::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
         766                 :                          HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
         767                 : {
         768                 :   // If we are here, then rects have intersected.
         769                 :   //
         770                 :   // XXX I think iframes and divs can be rounded like anything else but we don't
         771                 :   //     cover that case here.
         772                 :   //
         773               0 :   if (aState->mShadows) {
         774               0 :     aState->mShadows->AppendElement(mId);
         775                 :   }
         776               0 : }

Generated by: LCOV version 1.7