| /* |
| * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| |
| #include "RenderLayerBacking.h" |
| |
| #include "AnimationController.h" |
| #include "CanvasRenderingContext.h" |
| #include "CSSPropertyNames.h" |
| #include "Chrome.h" |
| #include "FontCache.h" |
| #include "FrameView.h" |
| #include "GraphicsContext.h" |
| #include "GraphicsLayer.h" |
| #include "HTMLCanvasElement.h" |
| #include "HTMLIFrameElement.h" |
| #include "HTMLMediaElement.h" |
| #include "HTMLNames.h" |
| #include "InspectorInstrumentation.h" |
| #include "KeyframeList.h" |
| #include "PluginViewBase.h" |
| #include "RenderApplet.h" |
| #include "RenderIFrame.h" |
| #include "RenderImage.h" |
| #include "RenderLayerCompositor.h" |
| #include "RenderEmbeddedObject.h" |
| #include "RenderVideo.h" |
| #include "RenderView.h" |
| #include "ScrollingCoordinator.h" |
| #include "Settings.h" |
| #include "StyleResolver.h" |
| #include "TiledBacking.h" |
| #include <wtf/CurrentTime.h> |
| #include <wtf/text/StringBuilder.h> |
| |
| #if ENABLE(CSS_FILTERS) |
| #include "FilterEffectRenderer.h" |
| #if ENABLE(CSS_SHADERS) |
| #include "CustomFilterOperation.h" |
| #endif |
| #endif |
| |
| #if ENABLE(WEBGL) || ENABLE(ACCELERATED_2D_CANVAS) |
| #include "GraphicsContext3D.h" |
| #endif |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| static bool hasBoxDecorations(const RenderStyle*); |
| static bool hasBoxDecorationsOrBackground(const RenderObject*); |
| static bool hasBoxDecorationsOrBackgroundImage(const RenderStyle*); |
| static IntRect clipBox(RenderBox* renderer); |
| |
| static inline bool isAcceleratedCanvas(RenderObject* renderer) |
| { |
| #if ENABLE(WEBGL) || ENABLE(ACCELERATED_2D_CANVAS) |
| if (renderer->isCanvas()) { |
| HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(renderer->node()); |
| if (CanvasRenderingContext* context = canvas->renderingContext()) |
| return context->isAccelerated(); |
| } |
| #else |
| UNUSED_PARAM(renderer); |
| #endif |
| return false; |
| } |
| |
| bool RenderLayerBacking::m_creatingPrimaryGraphicsLayer = false; |
| |
| RenderLayerBacking::RenderLayerBacking(RenderLayer* layer) |
| : m_owningLayer(layer) |
| , m_scrollLayerID(0) |
| , m_artificiallyInflatedBounds(false) |
| , m_isMainFrameRenderViewLayer(false) |
| , m_usingTiledCacheLayer(false) |
| , m_requiresOwnBackingStore(true) |
| #if ENABLE(CSS_FILTERS) |
| , m_canCompositeFilters(false) |
| #endif |
| { |
| if (layer->isRootLayer()) { |
| Frame* frame = toRenderView(renderer())->frameView()->frame(); |
| Page* page = frame ? frame->page() : 0; |
| if (page && frame && page->mainFrame() == frame) { |
| m_isMainFrameRenderViewLayer = true; |
| |
| #if PLATFORM(MAC) |
| // FIXME: It's a little weird that we base this decision on whether there's a scrolling coordinator or not. |
| if (page->scrollingCoordinator()) |
| m_usingTiledCacheLayer = true; |
| #endif |
| } |
| } |
| |
| createPrimaryGraphicsLayer(); |
| |
| if (m_usingTiledCacheLayer) { |
| TiledBacking* tiledBacking = this->tiledBacking(); |
| if (Page* page = renderer()->frame()->page()) { |
| Frame* frame = renderer()->frame(); |
| tiledBacking->setIsInWindow(page->isOnscreen()); |
| tiledBacking->setScrollingPerformanceLoggingEnabled(frame->settings() && frame->settings()->scrollingPerformanceLoggingEnabled()); |
| adjustTileCacheCoverage(); |
| } |
| } |
| } |
| |
| RenderLayerBacking::~RenderLayerBacking() |
| { |
| updateClippingLayers(false, false); |
| updateOverflowControlsLayers(false, false, false); |
| updateForegroundLayer(false); |
| updateMaskLayer(false); |
| updateScrollingLayers(false); |
| detachFromScrollingCoordinator(); |
| destroyGraphicsLayers(); |
| } |
| |
| PassOwnPtr<GraphicsLayer> RenderLayerBacking::createGraphicsLayer(const String& name) |
| { |
| GraphicsLayerFactory* graphicsLayerFactory = 0; |
| if (Page* page = renderer()->frame()->page()) |
| graphicsLayerFactory = page->chrome()->client()->graphicsLayerFactory(); |
| |
| OwnPtr<GraphicsLayer> graphicsLayer = GraphicsLayer::create(graphicsLayerFactory, this); |
| |
| #ifndef NDEBUG |
| graphicsLayer->setName(name); |
| #else |
| UNUSED_PARAM(name); |
| #endif |
| graphicsLayer->setMaintainsPixelAlignment(compositor()->keepLayersPixelAligned()); |
| |
| #if PLATFORM(MAC) && USE(CA) |
| graphicsLayer->setAcceleratesDrawing(compositor()->acceleratedDrawingEnabled()); |
| #endif |
| |
| return graphicsLayer.release(); |
| } |
| |
| bool RenderLayerBacking::shouldUseTileCache(const GraphicsLayer*) const |
| { |
| return m_usingTiledCacheLayer && m_creatingPrimaryGraphicsLayer; |
| } |
| |
| TiledBacking* RenderLayerBacking::tiledBacking() const |
| { |
| return m_graphicsLayer->tiledBacking(); |
| } |
| |
| void RenderLayerBacking::adjustTileCacheCoverage() |
| { |
| if (!m_usingTiledCacheLayer) |
| return; |
| |
| TiledBacking::TileCoverage tileCoverage = TiledBacking::CoverageForVisibleArea; |
| |
| // FIXME: When we use TiledBacking for overflow, this should look at RenderView scrollability. |
| Frame* frame = renderer()->frame(); |
| if (frame) { |
| FrameView* frameView = frame->view(); |
| if (frameView->horizontalScrollbarMode() != ScrollbarAlwaysOff) |
| tileCoverage |= TiledBacking::CoverageForHorizontalScrolling; |
| |
| if (frameView->verticalScrollbarMode() != ScrollbarAlwaysOff) |
| tileCoverage |= TiledBacking::CoverageForVerticalScrolling; |
| |
| if (ScrollingCoordinator* scrollingCoordinator = frame->page()->scrollingCoordinator()) { |
| if (scrollingCoordinator->shouldUpdateScrollLayerPositionOnMainThread()) |
| tileCoverage |= TiledBacking::CoverageForSlowScrolling; |
| } |
| } |
| |
| tiledBacking()->setTileCoverage(tileCoverage); |
| } |
| |
| void RenderLayerBacking::updateDebugIndicators(bool showBorder, bool showRepaintCounter) |
| { |
| m_graphicsLayer->setShowDebugBorder(showBorder); |
| m_graphicsLayer->setShowRepaintCounter(showRepaintCounter); |
| |
| if (m_ancestorClippingLayer) |
| m_ancestorClippingLayer->setShowDebugBorder(showBorder); |
| |
| if (m_foregroundLayer) { |
| m_foregroundLayer->setShowDebugBorder(showBorder); |
| m_foregroundLayer->setShowRepaintCounter(showRepaintCounter); |
| } |
| |
| if (m_maskLayer) { |
| m_maskLayer->setShowDebugBorder(showBorder); |
| m_maskLayer->setShowRepaintCounter(showRepaintCounter); |
| } |
| |
| if (m_scrollingLayer) |
| m_scrollingLayer->setShowDebugBorder(showBorder); |
| |
| if (m_scrollingContentsLayer) |
| m_scrollingContentsLayer->setShowDebugBorder(showBorder); |
| } |
| |
| void RenderLayerBacking::createPrimaryGraphicsLayer() |
| { |
| String layerName; |
| #ifndef NDEBUG |
| layerName = nameForLayer(); |
| #endif |
| |
| // The call to createGraphicsLayer ends calling back into here as |
| // a GraphicsLayerClient to ask if it shouldUseTileCache(). We only want |
| // the tile cache on our main layer. This is pretty ugly, but saves us from |
| // exposing the API to all clients. |
| |
| m_creatingPrimaryGraphicsLayer = true; |
| m_graphicsLayer = createGraphicsLayer(layerName); |
| m_creatingPrimaryGraphicsLayer = false; |
| |
| if (m_usingTiledCacheLayer) |
| m_containmentLayer = createGraphicsLayer("TileCache Flattening Layer"); |
| |
| if (m_isMainFrameRenderViewLayer) { |
| bool isTransparent = false; |
| if (FrameView* frameView = toRenderView(renderer())->frameView()) |
| isTransparent = frameView->isTransparent(); |
| |
| m_graphicsLayer->setContentsOpaque(!isTransparent); |
| m_graphicsLayer->setAppliesPageScale(); |
| } |
| |
| #if PLATFORM(MAC) && USE(CA) |
| if (!compositor()->acceleratedDrawingEnabled() && renderer()->isCanvas()) { |
| HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(renderer()->node()); |
| if (canvas->shouldAccelerate(canvas->size())) |
| m_graphicsLayer->setAcceleratesDrawing(true); |
| } |
| #endif |
| |
| updateOpacity(renderer()->style()); |
| updateTransform(renderer()->style()); |
| #if ENABLE(CSS_FILTERS) |
| updateFilters(renderer()->style()); |
| #endif |
| #if ENABLE(CSS_COMPOSITING) |
| updateLayerBlendMode(renderer()->style()); |
| #endif |
| } |
| |
| void RenderLayerBacking::destroyGraphicsLayers() |
| { |
| if (m_graphicsLayer) |
| m_graphicsLayer->removeFromParent(); |
| |
| m_graphicsLayer = nullptr; |
| m_foregroundLayer = nullptr; |
| m_containmentLayer = nullptr; |
| m_maskLayer = nullptr; |
| |
| m_scrollingLayer = nullptr; |
| m_scrollingContentsLayer = nullptr; |
| } |
| |
| void RenderLayerBacking::updateOpacity(const RenderStyle* style) |
| { |
| m_graphicsLayer->setOpacity(compositingOpacity(style->opacity())); |
| } |
| |
| void RenderLayerBacking::updateTransform(const RenderStyle* style) |
| { |
| // FIXME: This could use m_owningLayer->transform(), but that currently has transform-origin |
| // baked into it, and we don't want that. |
| TransformationMatrix t; |
| if (m_owningLayer->hasTransform()) { |
| style->applyTransform(t, toRenderBox(renderer())->pixelSnappedBorderBoxRect().size(), RenderStyle::ExcludeTransformOrigin); |
| makeMatrixRenderable(t, compositor()->canRender3DTransforms()); |
| } |
| |
| m_graphicsLayer->setTransform(t); |
| } |
| |
| #if ENABLE(CSS_FILTERS) |
| void RenderLayerBacking::updateFilters(const RenderStyle* style) |
| { |
| m_canCompositeFilters = m_graphicsLayer->setFilters(owningLayer()->computeFilterOperations(style)); |
| } |
| #endif |
| |
| #if ENABLE(CSS_COMPOSITING) |
| void RenderLayerBacking::updateLayerBlendMode(const RenderStyle*) |
| { |
| } |
| #endif |
| |
| static bool hasNonZeroTransformOrigin(const RenderObject* renderer) |
| { |
| RenderStyle* style = renderer->style(); |
| return (style->transformOriginX().type() == Fixed && style->transformOriginX().value()) |
| || (style->transformOriginY().type() == Fixed && style->transformOriginY().value()); |
| } |
| |
| static bool layerOrAncestorIsTransformedOrUsingCompositedScrolling(RenderLayer* layer) |
| { |
| for (RenderLayer* curr = layer; curr; curr = curr->parent()) { |
| if (curr->hasTransform() || curr->usesCompositedScrolling()) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool RenderLayerBacking::shouldClipCompositedBounds() const |
| { |
| // Scrollbar layers use this layer for relative positioning, so don't clip. |
| if (layerForHorizontalScrollbar() || layerForVerticalScrollbar()) |
| return false; |
| |
| if (m_usingTiledCacheLayer) |
| return true; |
| |
| if (!compositor()->compositingConsultsOverlap()) |
| return false; |
| |
| if (layerOrAncestorIsTransformedOrUsingCompositedScrolling(m_owningLayer)) |
| return false; |
| |
| return true; |
| } |
| |
| |
| void RenderLayerBacking::updateCompositedBounds() |
| { |
| IntRect layerBounds = compositor()->calculateCompositedBounds(m_owningLayer, m_owningLayer); |
| |
| // Clip to the size of the document or enclosing overflow-scroll layer. |
| // If this or an ancestor is transformed, we can't currently compute the correct rect to intersect with. |
| // We'd need RenderObject::convertContainerToLocalQuad(), which doesn't yet exist. |
| if (shouldClipCompositedBounds()) { |
| RenderView* view = m_owningLayer->renderer()->view(); |
| RenderLayer* rootLayer = view->layer(); |
| |
| // Start by clipping to the view's bounds. |
| LayoutRect clippingBounds = view->unscaledDocumentRect(); |
| |
| if (m_owningLayer != rootLayer) |
| clippingBounds.intersect(m_owningLayer->backgroundClipRect(rootLayer, 0, AbsoluteClipRects).rect()); // FIXME: Incorrect for CSS regions. |
| |
| LayoutPoint delta; |
| m_owningLayer->convertToLayerCoords(rootLayer, delta); |
| clippingBounds.move(-delta.x(), -delta.y()); |
| |
| layerBounds.intersect(pixelSnappedIntRect(clippingBounds)); |
| } |
| |
| // If the element has a transform-origin that has fixed lengths, and the renderer has zero size, |
| // then we need to ensure that the compositing layer has non-zero size so that we can apply |
| // the transform-origin via the GraphicsLayer anchorPoint (which is expressed as a fractional value). |
| if (layerBounds.isEmpty() && hasNonZeroTransformOrigin(renderer())) { |
| layerBounds.setWidth(1); |
| layerBounds.setHeight(1); |
| m_artificiallyInflatedBounds = true; |
| } else |
| m_artificiallyInflatedBounds = false; |
| |
| setCompositedBounds(layerBounds); |
| } |
| |
| void RenderLayerBacking::updateAfterWidgetResize() |
| { |
| if (renderer()->isRenderPart()) { |
| if (RenderLayerCompositor* innerCompositor = RenderLayerCompositor::frameContentsCompositor(toRenderPart(renderer()))) { |
| innerCompositor->frameViewDidChangeSize(); |
| innerCompositor->frameViewDidChangeLocation(contentsBox().location()); |
| } |
| } |
| } |
| |
| void RenderLayerBacking::updateAfterLayout(UpdateDepth updateDepth, bool isUpdateRoot) |
| { |
| RenderLayerCompositor* layerCompositor = compositor(); |
| if (!layerCompositor->compositingLayersNeedRebuild()) { |
| // Calling updateGraphicsLayerGeometry() here gives incorrect results, because the |
| // position of this layer's GraphicsLayer depends on the position of our compositing |
| // ancestor's GraphicsLayer. That cannot be determined until all the descendant |
| // RenderLayers of that ancestor have been processed via updateLayerPositions(). |
| // |
| // The solution is to update compositing children of this layer here, |
| // via updateCompositingChildrenGeometry(). |
| updateCompositedBounds(); |
| layerCompositor->updateCompositingDescendantGeometry(m_owningLayer, m_owningLayer, updateDepth); |
| |
| if (isUpdateRoot) { |
| updateGraphicsLayerGeometry(); |
| layerCompositor->updateRootLayerPosition(); |
| } |
| } |
| } |
| |
| bool RenderLayerBacking::updateGraphicsLayerConfiguration() |
| { |
| RenderLayerCompositor* compositor = this->compositor(); |
| RenderObject* renderer = this->renderer(); |
| |
| m_owningLayer->updateZOrderLists(); |
| |
| bool layerConfigChanged = false; |
| if (updateForegroundLayer(compositor->needsContentsCompositingLayer(m_owningLayer))) |
| layerConfigChanged = true; |
| |
| bool needsDescendentsClippingLayer = compositor->clipsCompositingDescendants(m_owningLayer); |
| |
| // Our scrolling layer will clip. |
| if (m_owningLayer->usesCompositedScrolling()) |
| needsDescendentsClippingLayer = false; |
| |
| if (updateClippingLayers(compositor->clippedByAncestor(m_owningLayer), needsDescendentsClippingLayer)) |
| layerConfigChanged = true; |
| |
| if (updateOverflowControlsLayers(requiresHorizontalScrollbarLayer(), requiresVerticalScrollbarLayer(), requiresScrollCornerLayer())) |
| layerConfigChanged = true; |
| |
| if (updateScrollingLayers(m_owningLayer->usesCompositedScrolling())) |
| layerConfigChanged = true; |
| |
| if (layerConfigChanged) |
| updateInternalHierarchy(); |
| |
| if (GraphicsLayer* flatteningLayer = tileCacheFlatteningLayer()) { |
| flatteningLayer->removeFromParent(); |
| m_graphicsLayer->addChild(flatteningLayer); |
| } |
| |
| if (updateMaskLayer(renderer->hasMask())) |
| m_graphicsLayer->setMaskLayer(m_maskLayer.get()); |
| |
| if (m_owningLayer->hasReflection()) { |
| if (m_owningLayer->reflectionLayer()->backing()) { |
| GraphicsLayer* reflectionLayer = m_owningLayer->reflectionLayer()->backing()->graphicsLayer(); |
| m_graphicsLayer->setReplicatedByLayer(reflectionLayer); |
| } |
| } else |
| m_graphicsLayer->setReplicatedByLayer(0); |
| |
| if (isDirectlyCompositedImage()) |
| updateImageContents(); |
| |
| if (renderer->isEmbeddedObject() && toRenderEmbeddedObject(renderer)->allowsAcceleratedCompositing()) { |
| PluginViewBase* pluginViewBase = static_cast<PluginViewBase*>(toRenderWidget(renderer)->widget()); |
| m_graphicsLayer->setContentsToMedia(pluginViewBase->platformLayer()); |
| } |
| #if ENABLE(VIDEO) |
| else if (renderer->isVideo()) { |
| HTMLMediaElement* mediaElement = static_cast<HTMLMediaElement*>(renderer->node()); |
| m_graphicsLayer->setContentsToMedia(mediaElement->platformLayer()); |
| } |
| #endif |
| #if ENABLE(WEBGL) || ENABLE(ACCELERATED_2D_CANVAS) |
| else if (isAcceleratedCanvas(renderer)) { |
| HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(renderer->node()); |
| if (CanvasRenderingContext* context = canvas->renderingContext()) |
| m_graphicsLayer->setContentsToCanvas(context->platformLayer()); |
| layerConfigChanged = true; |
| } |
| #endif |
| #if ENABLE(FULLSCREEN_API) |
| else if (renderer->isRenderFullScreen()) { |
| // RenderFullScreen renderers have no content, and only a solid |
| // background color. They also can be large enough to trigger the |
| // creation of a tiled-layer, which can cause flashing problems |
| // during repainting. Special case the RenderFullScreen case because |
| // we know its style does not come from CSS and it is therefore will |
| // not contain paintable content (e.g. background images, gradients, |
| // etc), so safe to set the layer's background color to the renderer's |
| // style's background color. |
| updateBackgroundColor(); |
| } |
| #endif |
| if (renderer->isRenderPart()) |
| layerConfigChanged = RenderLayerCompositor::parentFrameContentLayers(toRenderPart(renderer)); |
| |
| return layerConfigChanged; |
| } |
| |
| static IntRect clipBox(RenderBox* renderer) |
| { |
| LayoutRect result = PaintInfo::infiniteRect(); |
| if (renderer->hasOverflowClip()) |
| result = renderer->overflowClipRect(LayoutPoint(), 0); // FIXME: Incorrect for CSS regions. |
| |
| if (renderer->hasClip()) |
| result.intersect(renderer->clipRect(LayoutPoint(), 0)); // FIXME: Incorrect for CSS regions. |
| |
| return pixelSnappedIntRect(result); |
| } |
| |
| void RenderLayerBacking::updateGraphicsLayerGeometry() |
| { |
| // If we haven't built z-order lists yet, wait until later. |
| if (m_owningLayer->isStackingContext() && m_owningLayer->m_zOrderListsDirty) |
| return; |
| |
| // Set transform property, if it is not animating. We have to do this here because the transform |
| // is affected by the layer dimensions. |
| if (!renderer()->animation()->isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyWebkitTransform)) |
| updateTransform(renderer()->style()); |
| |
| // Set opacity, if it is not animating. |
| if (!renderer()->animation()->isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyOpacity)) |
| updateOpacity(renderer()->style()); |
| |
| #if ENABLE(CSS_FILTERS) |
| updateFilters(renderer()->style()); |
| #endif |
| |
| #if ENABLE(CSS_COMPOSITING) |
| updateLayerBlendMode(renderer()->style()); |
| #endif |
| |
| m_owningLayer->updateDescendantDependentFlags(); |
| |
| // m_graphicsLayer is the corresponding GraphicsLayer for this RenderLayer and its non-compositing |
| // descendants. So, the visibility flag for m_graphicsLayer should be true if there are any |
| // non-compositing visible layers. |
| m_graphicsLayer->setContentsVisible(m_owningLayer->hasVisibleContent() || hasVisibleNonCompositingDescendantLayers()); |
| |
| RenderStyle* style = renderer()->style(); |
| m_graphicsLayer->setPreserves3D(style->transformStyle3D() == TransformStyle3DPreserve3D && !renderer()->hasReflection()); |
| m_graphicsLayer->setBackfaceVisibility(style->backfaceVisibility() == BackfaceVisibilityVisible); |
| |
| // Register fixed position layers and their containers with the scrolling coordinator. |
| if (Page* page = renderer()->frame()->page()) { |
| if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator()) { |
| if (style->position() == FixedPosition || compositor()->fixedPositionedByAncestor(m_owningLayer)) |
| scrollingCoordinator->setLayerIsFixedToContainerLayer(childForSuperlayers(), true); |
| else { |
| if (m_ancestorClippingLayer) |
| scrollingCoordinator->setLayerIsFixedToContainerLayer(m_ancestorClippingLayer.get(), false); |
| scrollingCoordinator->setLayerIsFixedToContainerLayer(m_graphicsLayer.get(), false); |
| } |
| // Page scale is applied as a transform on the root render view layer. Because the scroll |
| // layer is further up in the hierarchy, we need to avoid marking the root render view |
| // layer as a container. |
| bool isContainer = m_owningLayer->hasTransform() && !m_owningLayer->isRootLayer(); |
| scrollingCoordinator->setLayerIsContainerForFixedPositionLayers(childForSuperlayers(), isContainer); |
| } |
| } |
| RenderLayer* compAncestor = m_owningLayer->ancestorCompositingLayer(); |
| |
| // We compute everything relative to the enclosing compositing layer. |
| IntRect ancestorCompositingBounds; |
| if (compAncestor) { |
| ASSERT(compAncestor->backing()); |
| ancestorCompositingBounds = pixelSnappedIntRect(compAncestor->backing()->compositedBounds()); |
| } |
| |
| IntRect localCompositingBounds = pixelSnappedIntRect(compositedBounds()); |
| |
| IntRect relativeCompositingBounds(localCompositingBounds); |
| IntPoint delta; |
| m_owningLayer->convertToPixelSnappedLayerCoords(compAncestor, delta); |
| relativeCompositingBounds.moveBy(delta); |
| |
| IntPoint graphicsLayerParentLocation; |
| if (compAncestor && compAncestor->backing()->hasClippingLayer()) { |
| // If the compositing ancestor has a layer to clip children, we parent in that, and therefore |
| // position relative to it. |
| IntRect clippingBox = clipBox(toRenderBox(compAncestor->renderer())); |
| graphicsLayerParentLocation = clippingBox.location(); |
| } else if (compAncestor) |
| graphicsLayerParentLocation = ancestorCompositingBounds.location(); |
| else |
| graphicsLayerParentLocation = renderer()->view()->documentRect().location(); |
| |
| if (compAncestor && compAncestor->usesCompositedScrolling()) { |
| RenderBox* renderBox = toRenderBox(compAncestor->renderer()); |
| IntSize scrollOffset = compAncestor->scrolledContentOffset(); |
| IntPoint scrollOrigin(renderBox->borderLeft(), renderBox->borderTop()); |
| graphicsLayerParentLocation = scrollOrigin - scrollOffset; |
| } |
| |
| if (compAncestor && m_ancestorClippingLayer) { |
| // Call calculateRects to get the backgroundRect which is what is used to clip the contents of this |
| // layer. Note that we call it with temporaryClipRects = true because normally when computing clip rects |
| // for a compositing layer, rootLayer is the layer itself. |
| IntRect parentClipRect = pixelSnappedIntRect(m_owningLayer->backgroundClipRect(compAncestor, 0, TemporaryClipRects, IgnoreOverlayScrollbarSize, RenderLayer::IgnoreOverflowClip).rect()); // FIXME: Incorrect for CSS regions. |
| ASSERT(parentClipRect != PaintInfo::infiniteRect()); |
| m_ancestorClippingLayer->setPosition(FloatPoint() + (parentClipRect.location() - graphicsLayerParentLocation)); |
| m_ancestorClippingLayer->setSize(parentClipRect.size()); |
| |
| // backgroundRect is relative to compAncestor, so subtract deltaX/deltaY to get back to local coords. |
| m_ancestorClippingLayer->setOffsetFromRenderer(parentClipRect.location() - delta); |
| |
| // The primary layer is then parented in, and positioned relative to this clipping layer. |
| graphicsLayerParentLocation = parentClipRect.location(); |
| } |
| |
| m_graphicsLayer->setPosition(FloatPoint() + (relativeCompositingBounds.location() - graphicsLayerParentLocation)); |
| m_graphicsLayer->setOffsetFromRenderer(localCompositingBounds.location() - IntPoint()); |
| |
| FloatSize oldSize = m_graphicsLayer->size(); |
| FloatSize newSize = relativeCompositingBounds.size(); |
| if (oldSize != newSize) { |
| m_graphicsLayer->setSize(newSize); |
| // A bounds change will almost always require redisplay. Usually that redisplay |
| // will happen because of a repaint elsewhere, but not always: |
| // e.g. see RenderView::setMaximalOutlineSize() |
| m_graphicsLayer->setNeedsDisplay(); |
| } |
| |
| // If we have a layer that clips children, position it. |
| IntRect clippingBox; |
| if (GraphicsLayer* clipLayer = clippingLayer()) { |
| clippingBox = clipBox(toRenderBox(renderer())); |
| clipLayer->setPosition(FloatPoint() + (clippingBox.location() - localCompositingBounds.location())); |
| clipLayer->setSize(clippingBox.size()); |
| clipLayer->setOffsetFromRenderer(clippingBox.location() - IntPoint()); |
| } |
| |
| if (m_maskLayer) { |
| if (m_maskLayer->size() != m_graphicsLayer->size()) { |
| m_maskLayer->setSize(m_graphicsLayer->size()); |
| m_maskLayer->setNeedsDisplay(); |
| } |
| m_maskLayer->setPosition(FloatPoint()); |
| m_maskLayer->setOffsetFromRenderer(m_graphicsLayer->offsetFromRenderer()); |
| } |
| |
| if (m_owningLayer->hasTransform()) { |
| const IntRect borderBox = toRenderBox(renderer())->pixelSnappedBorderBoxRect(); |
| |
| // Get layout bounds in the coords of compAncestor to match relativeCompositingBounds. |
| IntRect layerBounds = IntRect(delta, borderBox.size()); |
| |
| // Update properties that depend on layer dimensions |
| FloatPoint3D transformOrigin = computeTransformOrigin(borderBox); |
| // Compute the anchor point, which is in the center of the renderer box unless transform-origin is set. |
| FloatPoint3D anchor(relativeCompositingBounds.width() != 0.0f ? ((layerBounds.x() - relativeCompositingBounds.x()) + transformOrigin.x()) / relativeCompositingBounds.width() : 0.5f, |
| relativeCompositingBounds.height() != 0.0f ? ((layerBounds.y() - relativeCompositingBounds.y()) + transformOrigin.y()) / relativeCompositingBounds.height() : 0.5f, |
| transformOrigin.z()); |
| m_graphicsLayer->setAnchorPoint(anchor); |
| |
| RenderStyle* style = renderer()->style(); |
| GraphicsLayer* clipLayer = clippingLayer(); |
| if (style->hasPerspective()) { |
| TransformationMatrix t = owningLayer()->perspectiveTransform(); |
| |
| if (clipLayer) { |
| clipLayer->setChildrenTransform(t); |
| m_graphicsLayer->setChildrenTransform(TransformationMatrix()); |
| } |
| else |
| m_graphicsLayer->setChildrenTransform(t); |
| } else { |
| if (clipLayer) |
| clipLayer->setChildrenTransform(TransformationMatrix()); |
| else |
| m_graphicsLayer->setChildrenTransform(TransformationMatrix()); |
| } |
| } else { |
| m_graphicsLayer->setAnchorPoint(FloatPoint3D(0.5f, 0.5f, 0)); |
| } |
| |
| if (m_foregroundLayer) { |
| FloatPoint foregroundPosition; |
| FloatSize foregroundSize = newSize; |
| IntSize foregroundOffset = m_graphicsLayer->offsetFromRenderer(); |
| if (hasClippingLayer()) { |
| // If we have a clipping layer (which clips descendants), then the foreground layer is a child of it, |
| // so that it gets correctly sorted with children. In that case, position relative to the clipping layer. |
| foregroundSize = FloatSize(clippingBox.size()); |
| foregroundOffset = clippingBox.location() - IntPoint(); |
| } |
| |
| m_foregroundLayer->setPosition(foregroundPosition); |
| if (foregroundSize != m_foregroundLayer->size()) { |
| m_foregroundLayer->setSize(foregroundSize); |
| m_foregroundLayer->setNeedsDisplay(); |
| } |
| m_foregroundLayer->setOffsetFromRenderer(foregroundOffset); |
| } |
| |
| if (m_owningLayer->reflectionLayer() && m_owningLayer->reflectionLayer()->isComposited()) { |
| RenderLayerBacking* reflectionBacking = m_owningLayer->reflectionLayer()->backing(); |
| reflectionBacking->updateGraphicsLayerGeometry(); |
| |
| // The reflection layer has the bounds of m_owningLayer->reflectionLayer(), |
| // but the reflected layer is the bounds of this layer, so we need to position it appropriately. |
| FloatRect layerBounds = compositedBounds(); |
| FloatRect reflectionLayerBounds = reflectionBacking->compositedBounds(); |
| reflectionBacking->graphicsLayer()->setReplicatedLayerPosition(FloatPoint() + (layerBounds.location() - reflectionLayerBounds.location())); |
| } |
| |
| if (m_scrollingLayer) { |
| ASSERT(m_scrollingContentsLayer); |
| RenderBox* renderBox = toRenderBox(renderer()); |
| IntRect paddingBox(renderBox->borderLeft(), renderBox->borderTop(), renderBox->width() - renderBox->borderLeft() - renderBox->borderRight(), renderBox->height() - renderBox->borderTop() - renderBox->borderBottom()); |
| IntSize scrollOffset = m_owningLayer->scrolledContentOffset(); |
| |
| m_scrollingLayer->setPosition(FloatPoint() + (paddingBox.location() - localCompositingBounds.location())); |
| |
| m_scrollingLayer->setSize(paddingBox.size()); |
| m_scrollingContentsLayer->setPosition(FloatPoint(-scrollOffset.width(), -scrollOffset.height())); |
| |
| IntSize oldScrollingLayerOffset = m_scrollingLayer->offsetFromRenderer(); |
| m_scrollingLayer->setOffsetFromRenderer(IntPoint() - paddingBox.location()); |
| |
| bool paddingBoxOffsetChanged = oldScrollingLayerOffset != m_scrollingLayer->offsetFromRenderer(); |
| |
| IntSize scrollSize(m_owningLayer->scrollWidth(), m_owningLayer->scrollHeight()); |
| if (scrollSize != m_scrollingContentsLayer->size() || paddingBoxOffsetChanged) |
| m_scrollingContentsLayer->setNeedsDisplay(); |
| |
| IntSize scrollingContentsOffset = paddingBox.location() - IntPoint() - scrollOffset; |
| if (scrollingContentsOffset != m_scrollingContentsLayer->offsetFromRenderer() || scrollSize != m_scrollingContentsLayer->size()) |
| compositor()->scrollingLayerDidChange(m_owningLayer); |
| |
| m_scrollingContentsLayer->setSize(scrollSize); |
| // FIXME: Scrolling the content layer does not need to trigger a repaint. The offset will be compensated away during painting. |
| // FIXME: The paint offset and the scroll offset should really be separate concepts. |
| m_scrollingContentsLayer->setOffsetFromRenderer(scrollingContentsOffset); |
| } |
| |
| m_graphicsLayer->setContentsRect(contentsBox()); |
| |
| // If this layer was created just for clipping or to apply perspective, it doesn't need its own backing store. |
| setRequiresOwnBackingStore(compositor()->requiresOwnBackingStore(m_owningLayer, compAncestor)); |
| |
| updateDrawsContent(); |
| updateAfterWidgetResize(); |
| } |
| |
| void RenderLayerBacking::updateInternalHierarchy() |
| { |
| // m_foregroundLayer has to be inserted in the correct order with child layers, |
| // so it's not inserted here. |
| if (m_ancestorClippingLayer) { |
| m_ancestorClippingLayer->removeAllChildren(); |
| m_graphicsLayer->removeFromParent(); |
| m_ancestorClippingLayer->addChild(m_graphicsLayer.get()); |
| } |
| |
| if (m_containmentLayer) { |
| m_containmentLayer->removeFromParent(); |
| m_graphicsLayer->addChild(m_containmentLayer.get()); |
| } |
| |
| if (m_scrollingLayer) { |
| GraphicsLayer* superlayer = m_containmentLayer ? m_containmentLayer.get() : m_graphicsLayer.get(); |
| m_scrollingLayer->removeFromParent(); |
| superlayer->addChild(m_scrollingLayer.get()); |
| } |
| |
| // The clip for child layers does not include space for overflow controls, so they exist as |
| // siblings of the clipping layer if we have one. Normal children of this layer are set as |
| // children of the clipping layer. |
| if (m_layerForHorizontalScrollbar) { |
| m_layerForHorizontalScrollbar->removeFromParent(); |
| m_graphicsLayer->addChild(m_layerForHorizontalScrollbar.get()); |
| } |
| if (m_layerForVerticalScrollbar) { |
| m_layerForVerticalScrollbar->removeFromParent(); |
| m_graphicsLayer->addChild(m_layerForVerticalScrollbar.get()); |
| } |
| if (m_layerForScrollCorner) { |
| m_layerForScrollCorner->removeFromParent(); |
| m_graphicsLayer->addChild(m_layerForScrollCorner.get()); |
| } |
| } |
| |
| void RenderLayerBacking::updateDrawsContent() |
| { |
| if (m_scrollingLayer) { |
| // We don't have to consider overflow controls, because we know that the scrollbars are drawn elsewhere. |
| // m_graphicsLayer only needs backing store if the non-scrolling parts (background, outlines, borders, shadows etc) need to paint. |
| // m_scrollingLayer never has backing store. |
| // m_scrollingContentsLayer only needs backing store if the scrolled contents need to paint. |
| bool hasNonScrollingPaintedContent = m_owningLayer->hasVisibleContent() && hasBoxDecorationsOrBackground(renderer()); |
| m_graphicsLayer->setDrawsContent(hasNonScrollingPaintedContent); |
| |
| bool hasScrollingPaintedContent = m_owningLayer->hasVisibleContent() && (renderer()->hasBackground() || paintsChildren()); |
| m_scrollingContentsLayer->setDrawsContent(hasScrollingPaintedContent); |
| return; |
| } |
| |
| bool hasPaintedContent = containsPaintedContent(); |
| |
| // FIXME: we could refine this to only allocate backing for one of these layers if possible. |
| m_graphicsLayer->setDrawsContent(hasPaintedContent); |
| if (m_foregroundLayer) |
| m_foregroundLayer->setDrawsContent(hasPaintedContent); |
| } |
| |
| // Return true if the layers changed. |
| bool RenderLayerBacking::updateClippingLayers(bool needsAncestorClip, bool needsDescendantClip) |
| { |
| bool layersChanged = false; |
| |
| if (needsAncestorClip) { |
| if (!m_ancestorClippingLayer) { |
| m_ancestorClippingLayer = createGraphicsLayer("Ancestor clipping Layer"); |
| m_ancestorClippingLayer->setMasksToBounds(true); |
| layersChanged = true; |
| } |
| } else if (m_ancestorClippingLayer) { |
| m_ancestorClippingLayer->removeFromParent(); |
| m_ancestorClippingLayer = nullptr; |
| layersChanged = true; |
| } |
| |
| if (needsDescendantClip) { |
| if (!m_containmentLayer && !m_usingTiledCacheLayer) { |
| m_containmentLayer = createGraphicsLayer("Child clipping Layer"); |
| m_containmentLayer->setMasksToBounds(true); |
| layersChanged = true; |
| } |
| } else if (hasClippingLayer()) { |
| m_containmentLayer->removeFromParent(); |
| m_containmentLayer = nullptr; |
| layersChanged = true; |
| } |
| |
| return layersChanged; |
| } |
| |
| bool RenderLayerBacking::requiresHorizontalScrollbarLayer() const |
| { |
| #if !PLATFORM(CHROMIUM) |
| if (!m_owningLayer->hasOverlayScrollbars()) |
| return false; |
| #endif |
| return m_owningLayer->horizontalScrollbar(); |
| } |
| |
| bool RenderLayerBacking::requiresVerticalScrollbarLayer() const |
| { |
| #if !PLATFORM(CHROMIUM) |
| if (!m_owningLayer->hasOverlayScrollbars()) |
| return false; |
| #endif |
| return m_owningLayer->verticalScrollbar(); |
| } |
| |
| bool RenderLayerBacking::requiresScrollCornerLayer() const |
| { |
| #if !PLATFORM(CHROMIUM) |
| if (!m_owningLayer->hasOverlayScrollbars()) |
| return false; |
| #endif |
| return !m_owningLayer->scrollCornerAndResizerRect().isEmpty(); |
| } |
| |
| bool RenderLayerBacking::updateOverflowControlsLayers(bool needsHorizontalScrollbarLayer, bool needsVerticalScrollbarLayer, bool needsScrollCornerLayer) |
| { |
| bool layersChanged = false; |
| if (needsHorizontalScrollbarLayer) { |
| if (!m_layerForHorizontalScrollbar) { |
| m_layerForHorizontalScrollbar = createGraphicsLayer("horizontal scrollbar"); |
| layersChanged = true; |
| } |
| } else if (m_layerForHorizontalScrollbar) { |
| m_layerForHorizontalScrollbar.clear(); |
| layersChanged = true; |
| } |
| |
| if (needsVerticalScrollbarLayer) { |
| if (!m_layerForVerticalScrollbar) { |
| m_layerForVerticalScrollbar = createGraphicsLayer("vertical scrollbar"); |
| layersChanged = true; |
| } |
| } else if (m_layerForVerticalScrollbar) { |
| m_layerForVerticalScrollbar.clear(); |
| layersChanged = true; |
| } |
| |
| if (needsScrollCornerLayer) { |
| if (!m_layerForScrollCorner) { |
| m_layerForScrollCorner = createGraphicsLayer("scroll corner"); |
| layersChanged = true; |
| } |
| } else if (m_layerForScrollCorner) { |
| m_layerForScrollCorner.clear(); |
| layersChanged = true; |
| } |
| |
| return layersChanged; |
| } |
| |
| void RenderLayerBacking::positionOverflowControlsLayers(const IntSize& offsetFromRoot) |
| { |
| IntSize offsetFromRenderer = m_graphicsLayer->offsetFromRenderer(); |
| if (GraphicsLayer* layer = layerForHorizontalScrollbar()) { |
| Scrollbar* hBar = m_owningLayer->horizontalScrollbar(); |
| if (hBar) { |
| layer->setPosition(hBar->frameRect().location() - offsetFromRoot - offsetFromRenderer); |
| layer->setSize(hBar->frameRect().size()); |
| } |
| layer->setDrawsContent(hBar); |
| } |
| |
| if (GraphicsLayer* layer = layerForVerticalScrollbar()) { |
| Scrollbar* vBar = m_owningLayer->verticalScrollbar(); |
| if (vBar) { |
| layer->setPosition(vBar->frameRect().location() - offsetFromRoot - offsetFromRenderer); |
| layer->setSize(vBar->frameRect().size()); |
| } |
| layer->setDrawsContent(vBar); |
| } |
| |
| if (GraphicsLayer* layer = layerForScrollCorner()) { |
| const LayoutRect& scrollCornerAndResizer = m_owningLayer->scrollCornerAndResizerRect(); |
| layer->setPosition(scrollCornerAndResizer.location() - offsetFromRenderer); |
| layer->setSize(scrollCornerAndResizer.size()); |
| layer->setDrawsContent(!scrollCornerAndResizer.isEmpty()); |
| } |
| } |
| |
| bool RenderLayerBacking::updateForegroundLayer(bool needsForegroundLayer) |
| { |
| bool layerChanged = false; |
| if (needsForegroundLayer) { |
| if (!m_foregroundLayer) { |
| String layerName; |
| #ifndef NDEBUG |
| layerName = nameForLayer() + " (foreground)"; |
| #endif |
| m_foregroundLayer = createGraphicsLayer(layerName); |
| m_foregroundLayer->setDrawsContent(true); |
| m_foregroundLayer->setPaintingPhase(GraphicsLayerPaintForeground); |
| layerChanged = true; |
| } |
| } else if (m_foregroundLayer) { |
| m_foregroundLayer->removeFromParent(); |
| m_foregroundLayer = nullptr; |
| layerChanged = true; |
| } |
| |
| if (layerChanged) |
| m_graphicsLayer->setPaintingPhase(paintingPhaseForPrimaryLayer()); |
| |
| return layerChanged; |
| } |
| |
| bool RenderLayerBacking::updateMaskLayer(bool needsMaskLayer) |
| { |
| bool layerChanged = false; |
| if (needsMaskLayer) { |
| if (!m_maskLayer) { |
| m_maskLayer = createGraphicsLayer("Mask"); |
| m_maskLayer->setDrawsContent(true); |
| m_maskLayer->setPaintingPhase(GraphicsLayerPaintMask); |
| layerChanged = true; |
| } |
| } else if (m_maskLayer) { |
| m_maskLayer = nullptr; |
| layerChanged = true; |
| } |
| |
| if (layerChanged) |
| m_graphicsLayer->setPaintingPhase(paintingPhaseForPrimaryLayer()); |
| |
| return layerChanged; |
| } |
| |
| bool RenderLayerBacking::updateScrollingLayers(bool needsScrollingLayers) |
| { |
| bool layerChanged = false; |
| if (needsScrollingLayers) { |
| if (!m_scrollingLayer) { |
| // Outer layer which corresponds with the scroll view. |
| m_scrollingLayer = createGraphicsLayer("Scrolling container"); |
| m_scrollingLayer->setDrawsContent(false); |
| m_scrollingLayer->setMasksToBounds(true); |
| |
| // Inner layer which renders the content that scrolls. |
| m_scrollingContentsLayer = createGraphicsLayer("Scrolled Contents"); |
| m_scrollingContentsLayer->setDrawsContent(true); |
| m_scrollingContentsLayer->setPaintingPhase(GraphicsLayerPaintForeground | GraphicsLayerPaintOverflowContents); |
| m_scrollingLayer->addChild(m_scrollingContentsLayer.get()); |
| |
| layerChanged = true; |
| } |
| } else if (m_scrollingLayer) { |
| m_scrollingLayer = nullptr; |
| m_scrollingContentsLayer = nullptr; |
| layerChanged = true; |
| } |
| |
| if (layerChanged) { |
| updateInternalHierarchy(); |
| m_graphicsLayer->setPaintingPhase(paintingPhaseForPrimaryLayer()); |
| m_graphicsLayer->setNeedsDisplay(); |
| if (renderer()->view()) |
| compositor()->scrollingLayerDidChange(m_owningLayer); |
| } |
| |
| return layerChanged; |
| } |
| |
| void RenderLayerBacking::attachToScrollingCoordinator(RenderLayerBacking* parent) |
| { |
| // If m_scrollLayerID non-zero, then this backing is already attached to the ScrollingCoordinator. |
| if (m_scrollLayerID) |
| return; |
| |
| Page* page = renderer()->frame()->page(); |
| if (!page) |
| return; |
| |
| ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator(); |
| if (!scrollingCoordinator) |
| return; |
| |
| // FIXME: When we support overflow areas, we will have to refine this for overflow areas that are also |
| // positon:fixed. |
| ScrollingNodeType nodeType; |
| if (renderer()->style()->position() == FixedPosition) |
| nodeType = FixedNode; |
| else |
| nodeType = ScrollingNode; |
| |
| ScrollingNodeID parentID = parent ? parent->scrollLayerID() : 0; |
| m_scrollLayerID = scrollingCoordinator->attachToStateTree(nodeType, scrollingCoordinator->uniqueScrollLayerID(), parentID); |
| } |
| |
| void RenderLayerBacking::detachFromScrollingCoordinator() |
| { |
| // If m_scrollLayerID is 0, then this backing is not attached to the ScrollingCoordinator. |
| if (!m_scrollLayerID) |
| return; |
| |
| Page* page = renderer()->frame()->page(); |
| if (!page) |
| return; |
| |
| ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator(); |
| if (!scrollingCoordinator) |
| return; |
| |
| scrollingCoordinator->detachFromStateTree(m_scrollLayerID); |
| m_scrollLayerID = 0; |
| } |
| |
| GraphicsLayerPaintingPhase RenderLayerBacking::paintingPhaseForPrimaryLayer() const |
| { |
| unsigned phase = GraphicsLayerPaintBackground; |
| if (!m_foregroundLayer) |
| phase |= GraphicsLayerPaintForeground; |
| if (!m_maskLayer) |
| phase |= GraphicsLayerPaintMask; |
| |
| if (m_scrollingContentsLayer) |
| phase &= ~GraphicsLayerPaintForeground; |
| |
| return static_cast<GraphicsLayerPaintingPhase>(phase); |
| } |
| |
| float RenderLayerBacking::compositingOpacity(float rendererOpacity) const |
| { |
| float finalOpacity = rendererOpacity; |
| |
| for (RenderLayer* curr = m_owningLayer->parent(); curr; curr = curr->parent()) { |
| // We only care about parents that are stacking contexts. |
| // Recall that opacity creates stacking context. |
| if (!curr->isStackingContext()) |
| continue; |
| |
| // If we found a compositing layer, we want to compute opacity |
| // relative to it. So we can break here. |
| if (curr->isComposited()) |
| break; |
| |
| finalOpacity *= curr->renderer()->opacity(); |
| } |
| |
| return finalOpacity; |
| } |
| |
| static bool hasBoxDecorations(const RenderStyle* style) |
| { |
| return style->hasBorder() || style->hasBorderRadius() || style->hasOutline() || style->hasAppearance() || style->boxShadow() || style->hasFilter(); |
| } |
| |
| static bool hasBoxDecorationsOrBackground(const RenderObject* renderer) |
| { |
| return hasBoxDecorations(renderer->style()) || renderer->hasBackground(); |
| } |
| |
| static bool hasBoxDecorationsOrBackgroundImage(const RenderStyle* style) |
| { |
| return hasBoxDecorations(style) || style->hasBackgroundImage(); |
| } |
| |
| Color RenderLayerBacking::rendererBackgroundColor() const |
| { |
| RenderObject* backgroundRenderer = renderer(); |
| if (backgroundRenderer->isRoot()) |
| backgroundRenderer = backgroundRenderer->rendererForRootBackground(); |
| |
| return backgroundRenderer->style()->visitedDependentColor(CSSPropertyBackgroundColor); |
| } |
| |
| void RenderLayerBacking::updateBackgroundColor() |
| { |
| m_graphicsLayer->setContentsToBackgroundColor(rendererBackgroundColor()); |
| } |
| |
| bool RenderLayerBacking::paintsBoxDecorations() const |
| { |
| if (!m_owningLayer->hasVisibleContent()) |
| return false; |
| |
| if (hasBoxDecorationsOrBackground(renderer())) |
| return true; |
| |
| if (m_owningLayer->hasOverflowControls()) |
| return true; |
| |
| return false; |
| } |
| |
| bool RenderLayerBacking::paintsChildren() const |
| { |
| if (m_owningLayer->hasVisibleContent() && containsNonEmptyRenderers()) |
| return true; |
| |
| if (hasVisibleNonCompositingDescendantLayers()) |
| return true; |
| |
| return false; |
| } |
| |
| static bool isCompositedPlugin(RenderObject* renderer) |
| { |
| return renderer->isEmbeddedObject() && toRenderEmbeddedObject(renderer)->allowsAcceleratedCompositing(); |
| } |
| |
| // A "simple container layer" is a RenderLayer which has no visible content to render. |
| // It may have no children, or all its children may be themselves composited. |
| // This is a useful optimization, because it allows us to avoid allocating backing store. |
| bool RenderLayerBacking::isSimpleContainerCompositingLayer() const |
| { |
| RenderObject* renderObject = renderer(); |
| if (renderObject->hasMask()) // masks require special treatment |
| return false; |
| |
| if (renderObject->isReplaced() && !isCompositedPlugin(renderObject)) |
| return false; |
| |
| if (paintsBoxDecorations() || paintsChildren()) |
| return false; |
| |
| if (renderObject->node() && renderObject->node()->isDocumentNode()) { |
| // Look to see if the root object has a non-simple background |
| RenderObject* rootObject = renderObject->document()->documentElement() ? renderObject->document()->documentElement()->renderer() : 0; |
| if (!rootObject) |
| return false; |
| |
| RenderStyle* style = rootObject->style(); |
| |
| // Reject anything that has a border, a border-radius or outline, |
| // or is not a simple background (no background, or solid color). |
| if (hasBoxDecorationsOrBackgroundImage(style)) |
| return false; |
| |
| // Now look at the body's renderer. |
| HTMLElement* body = renderObject->document()->body(); |
| RenderObject* bodyObject = (body && body->hasLocalName(bodyTag)) ? body->renderer() : 0; |
| if (!bodyObject) |
| return false; |
| |
| style = bodyObject->style(); |
| |
| if (hasBoxDecorationsOrBackgroundImage(style)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool RenderLayerBacking::containsNonEmptyRenderers() const |
| { |
| // Some HTML can cause whitespace text nodes to have renderers, like: |
| // <div> |
| // <img src=...> |
| // </div> |
| // so test for 0x0 RenderTexts here |
| for (RenderObject* child = renderer()->firstChild(); child; child = child->nextSibling()) { |
| if (!child->hasLayer()) { |
| if (child->isRenderInline() || !child->isBox()) |
| return true; |
| |
| if (toRenderBox(child)->width() > 0 || toRenderBox(child)->height() > 0) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| // Conservative test for having no rendered children. |
| bool RenderLayerBacking::hasVisibleNonCompositingDescendantLayers() const |
| { |
| // FIXME: We shouldn't be called with a stale z-order lists. See bug 85512. |
| m_owningLayer->updateLayerListsIfNeeded(); |
| |
| #if !ASSERT_DISABLED |
| LayerListMutationDetector mutationChecker(m_owningLayer); |
| #endif |
| |
| if (Vector<RenderLayer*>* normalFlowList = m_owningLayer->normalFlowList()) { |
| size_t listSize = normalFlowList->size(); |
| for (size_t i = 0; i < listSize; ++i) { |
| RenderLayer* curLayer = normalFlowList->at(i); |
| if (!curLayer->isComposited() && curLayer->hasVisibleContent()) |
| return true; |
| } |
| } |
| |
| if (m_owningLayer->isStackingContext()) { |
| if (!m_owningLayer->hasVisibleDescendant()) |
| return false; |
| |
| // Use the m_hasCompositingDescendant bit to optimize? |
| if (Vector<RenderLayer*>* negZOrderList = m_owningLayer->negZOrderList()) { |
| size_t listSize = negZOrderList->size(); |
| for (size_t i = 0; i < listSize; ++i) { |
| RenderLayer* curLayer = negZOrderList->at(i); |
| if (!curLayer->isComposited() && curLayer->hasVisibleContent()) |
| return true; |
| } |
| } |
| |
| if (Vector<RenderLayer*>* posZOrderList = m_owningLayer->posZOrderList()) { |
| size_t listSize = posZOrderList->size(); |
| for (size_t i = 0; i < listSize; ++i) { |
| RenderLayer* curLayer = posZOrderList->at(i); |
| if (!curLayer->isComposited() && curLayer->hasVisibleContent()) |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| bool RenderLayerBacking::containsPaintedContent() const |
| { |
| if (isSimpleContainerCompositingLayer() || paintsIntoWindow() || paintsIntoCompositedAncestor() || m_artificiallyInflatedBounds || m_owningLayer->isReflection()) |
| return false; |
| |
| if (isDirectlyCompositedImage()) |
| return false; |
| |
| // FIXME: we could optimize cases where the image, video or canvas is known to fill the border box entirely, |
| // and set background color on the layer in that case, instead of allocating backing store and painting. |
| #if ENABLE(VIDEO) |
| if (renderer()->isVideo() && toRenderVideo(renderer())->shouldDisplayVideo()) |
| return hasBoxDecorationsOrBackground(renderer()); |
| #endif |
| #if PLATFORM(MAC) && USE(CA) && (PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070) |
| #elif ENABLE(WEBGL) || ENABLE(ACCELERATED_2D_CANVAS) |
| if (isAcceleratedCanvas(renderer())) |
| return hasBoxDecorationsOrBackground(renderer()); |
| #endif |
| |
| return true; |
| } |
| |
| // An image can be directly compositing if it's the sole content of the layer, and has no box decorations |
| // that require painting. Direct compositing saves backing store. |
| bool RenderLayerBacking::isDirectlyCompositedImage() const |
| { |
| RenderObject* renderObject = renderer(); |
| |
| if (!renderObject->isImage() || hasBoxDecorationsOrBackground(renderObject) || renderObject->hasClip()) |
| return false; |
| |
| RenderImage* imageRenderer = toRenderImage(renderObject); |
| if (CachedImage* cachedImage = imageRenderer->cachedImage()) { |
| if (!cachedImage->hasImage()) |
| return false; |
| |
| Image* image = cachedImage->imageForRenderer(imageRenderer); |
| if (!image->isBitmapImage()) |
| return false; |
| |
| return m_graphicsLayer->shouldDirectlyCompositeImage(image); |
| } |
| |
| return false; |
| } |
| |
| void RenderLayerBacking::contentChanged(ContentChangeType changeType) |
| { |
| if ((changeType == ImageChanged) && isDirectlyCompositedImage()) { |
| updateImageContents(); |
| return; |
| } |
| |
| if ((changeType == MaskImageChanged) && m_maskLayer) { |
| // The composited layer bounds relies on box->maskClipRect(), which changes |
| // when the mask image becomes available. |
| bool isUpdateRoot = true; |
| updateAfterLayout(CompositingChildren, isUpdateRoot); |
| } |
| |
| #if ENABLE(WEBGL) || ENABLE(ACCELERATED_2D_CANVAS) |
| if ((changeType == CanvasChanged || changeType == CanvasPixelsChanged) && isAcceleratedCanvas(renderer())) { |
| m_graphicsLayer->setContentsNeedsDisplay(); |
| return; |
| } |
| #endif |
| } |
| |
| void RenderLayerBacking::updateImageContents() |
| { |
| ASSERT(renderer()->isImage()); |
| RenderImage* imageRenderer = toRenderImage(renderer()); |
| |
| CachedImage* cachedImage = imageRenderer->cachedImage(); |
| if (!cachedImage) |
| return; |
| |
| Image* image = cachedImage->imageForRenderer(imageRenderer); |
| if (!image) |
| return; |
| |
| // We have to wait until the image is fully loaded before setting it on the layer. |
| if (!cachedImage->isLoaded()) |
| return; |
| |
| // This is a no-op if the layer doesn't have an inner layer for the image. |
| m_graphicsLayer->setContentsToImage(image); |
| updateDrawsContent(); |
| |
| // Image animation is "lazy", in that it automatically stops unless someone is drawing |
| // the image. So we have to kick the animation each time; this has the downside that the |
| // image will keep animating, even if its layer is not visible. |
| image->startAnimation(); |
| } |
| |
| FloatPoint3D RenderLayerBacking::computeTransformOrigin(const IntRect& borderBox) const |
| { |
| RenderStyle* style = renderer()->style(); |
| |
| FloatPoint3D origin; |
| origin.setX(floatValueForLength(style->transformOriginX(), borderBox.width())); |
| origin.setY(floatValueForLength(style->transformOriginY(), borderBox.height())); |
| origin.setZ(style->transformOriginZ()); |
| |
| return origin; |
| } |
| |
| FloatPoint RenderLayerBacking::computePerspectiveOrigin(const IntRect& borderBox) const |
| { |
| RenderStyle* style = renderer()->style(); |
| |
| float boxWidth = borderBox.width(); |
| float boxHeight = borderBox.height(); |
| |
| FloatPoint origin; |
| origin.setX(floatValueForLength(style->perspectiveOriginX(), boxWidth)); |
| origin.setY(floatValueForLength(style->perspectiveOriginY(), boxHeight)); |
| |
| return origin; |
| } |
| |
| // Return the offset from the top-left of this compositing layer at which the renderer's contents are painted. |
| IntSize RenderLayerBacking::contentOffsetInCompostingLayer() const |
| { |
| return IntSize(-m_compositedBounds.x(), -m_compositedBounds.y()); |
| } |
| |
| IntRect RenderLayerBacking::contentsBox() const |
| { |
| if (!renderer()->isBox()) |
| return IntRect(); |
| |
| IntRect contentsRect; |
| #if ENABLE(VIDEO) |
| if (renderer()->isVideo()) { |
| RenderVideo* videoRenderer = toRenderVideo(renderer()); |
| contentsRect = videoRenderer->videoBox(); |
| } else |
| #endif |
| contentsRect = pixelSnappedIntRect(toRenderBox(renderer())->contentBoxRect()); |
| |
| IntSize contentOffset = contentOffsetInCompostingLayer(); |
| contentsRect.move(contentOffset); |
| return contentsRect; |
| } |
| |
| GraphicsLayer* RenderLayerBacking::parentForSublayers() const |
| { |
| if (m_scrollingContentsLayer) |
| return m_scrollingContentsLayer.get(); |
| |
| return m_containmentLayer ? m_containmentLayer.get() : m_graphicsLayer.get(); |
| } |
| |
| bool RenderLayerBacking::paintsIntoWindow() const |
| { |
| if (m_usingTiledCacheLayer) |
| return false; |
| |
| if (m_owningLayer->isRootLayer()) { |
| #if PLATFORM(BLACKBERRY) |
| if (compositor()->inForcedCompositingMode()) |
| return false; |
| #endif |
| |
| return compositor()->rootLayerAttachment() != RenderLayerCompositor::RootLayerAttachedViaEnclosingFrame; |
| } |
| |
| return false; |
| } |
| |
| void RenderLayerBacking::setRequiresOwnBackingStore(bool requiresOwnBacking) |
| { |
| if (requiresOwnBacking == m_requiresOwnBackingStore) |
| return; |
| |
| m_requiresOwnBackingStore = requiresOwnBacking; |
| |
| // This affects the answer to paintsIntoCompositedAncestor(), which in turn affects |
| // cached clip rects, so when it changes we have to clear clip rects on descendants. |
| m_owningLayer->clearClipRectsIncludingDescendants(PaintingClipRects); |
| m_owningLayer->computeRepaintRectsIncludingDescendants(); |
| |
| compositor()->repaintInCompositedAncestor(m_owningLayer, compositedBounds()); |
| } |
| |
| #if ENABLE(CSS_COMPOSITING) |
| void RenderLayerBacking::setBlendMode(BlendMode) |
| { |
| } |
| #endif |
| |
| void RenderLayerBacking::setContentsNeedDisplay() |
| { |
| ASSERT(!paintsIntoCompositedAncestor()); |
| |
| if (m_graphicsLayer && m_graphicsLayer->drawsContent()) |
| m_graphicsLayer->setNeedsDisplay(); |
| |
| if (m_foregroundLayer && m_foregroundLayer->drawsContent()) |
| m_foregroundLayer->setNeedsDisplay(); |
| |
| if (m_maskLayer && m_maskLayer->drawsContent()) |
| m_maskLayer->setNeedsDisplay(); |
| |
| if (m_scrollingContentsLayer && m_scrollingContentsLayer->drawsContent()) |
| m_scrollingContentsLayer->setNeedsDisplay(); |
| } |
| |
| // r is in the coordinate space of the layer's render object |
| void RenderLayerBacking::setContentsNeedDisplayInRect(const IntRect& r) |
| { |
| ASSERT(!paintsIntoCompositedAncestor()); |
| |
| if (m_graphicsLayer && m_graphicsLayer->drawsContent()) { |
| IntRect layerDirtyRect = r; |
| layerDirtyRect.move(-m_graphicsLayer->offsetFromRenderer()); |
| m_graphicsLayer->setNeedsDisplayInRect(layerDirtyRect); |
| } |
| |
| if (m_foregroundLayer && m_foregroundLayer->drawsContent()) { |
| IntRect layerDirtyRect = r; |
| layerDirtyRect.move(-m_foregroundLayer->offsetFromRenderer()); |
| m_foregroundLayer->setNeedsDisplayInRect(layerDirtyRect); |
| } |
| |
| if (m_maskLayer && m_maskLayer->drawsContent()) { |
| IntRect layerDirtyRect = r; |
| layerDirtyRect.move(-m_maskLayer->offsetFromRenderer()); |
| m_maskLayer->setNeedsDisplayInRect(layerDirtyRect); |
| } |
| |
| if (m_scrollingContentsLayer && m_scrollingContentsLayer->drawsContent()) { |
| IntRect layerDirtyRect = r; |
| layerDirtyRect.move(-m_scrollingContentsLayer->offsetFromRenderer()); |
| m_scrollingContentsLayer->setNeedsDisplayInRect(layerDirtyRect); |
| } |
| } |
| |
| void RenderLayerBacking::paintIntoLayer(RenderLayer* rootLayer, GraphicsContext* context, |
| const IntRect& paintDirtyRect, // In the coords of rootLayer. |
| PaintBehavior paintBehavior, GraphicsLayerPaintingPhase paintingPhase, |
| RenderObject* paintingRoot) |
| { |
| if (paintsIntoWindow() || paintsIntoCompositedAncestor()) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| FontCachePurgePreventer fontCachePurgePreventer; |
| |
| RenderLayer::PaintLayerFlags paintFlags = 0; |
| if (paintingPhase & GraphicsLayerPaintBackground) |
| paintFlags |= RenderLayer::PaintLayerPaintingCompositingBackgroundPhase; |
| if (paintingPhase & GraphicsLayerPaintForeground) |
| paintFlags |= RenderLayer::PaintLayerPaintingCompositingForegroundPhase; |
| if (paintingPhase & GraphicsLayerPaintMask) |
| paintFlags |= RenderLayer::PaintLayerPaintingCompositingMaskPhase; |
| if (paintingPhase & GraphicsLayerPaintOverflowContents) |
| paintFlags |= RenderLayer::PaintLayerPaintingOverflowContents; |
| |
| // FIXME: GraphicsLayers need a way to split for RenderRegions. |
| m_owningLayer->paintLayerContents(rootLayer, context, paintDirtyRect, LayoutSize(), paintBehavior, paintingRoot, 0, 0, paintFlags); |
| |
| if (m_owningLayer->containsDirtyOverlayScrollbars()) |
| m_owningLayer->paintOverlayScrollbars(context, paintDirtyRect, paintBehavior, paintingRoot); |
| |
| ASSERT(!m_owningLayer->m_usedTransparency); |
| } |
| |
| static void paintScrollbar(Scrollbar* scrollbar, GraphicsContext& context, const IntRect& clip) |
| { |
| if (!scrollbar) |
| return; |
| |
| context.save(); |
| const IntRect& scrollbarRect = scrollbar->frameRect(); |
| context.translate(-scrollbarRect.x(), -scrollbarRect.y()); |
| IntRect transformedClip = clip; |
| transformedClip.moveBy(scrollbarRect.location()); |
| scrollbar->paint(&context, transformedClip); |
| context.restore(); |
| } |
| |
| // Up-call from compositing layer drawing callback. |
| void RenderLayerBacking::paintContents(const GraphicsLayer* graphicsLayer, GraphicsContext& context, GraphicsLayerPaintingPhase paintingPhase, const IntRect& clip) |
| { |
| #ifndef NDEBUG |
| if (Page* page = renderer()->frame()->page()) |
| page->setIsPainting(true); |
| #endif |
| |
| if (graphicsLayer == m_graphicsLayer.get() || graphicsLayer == m_foregroundLayer.get() || graphicsLayer == m_maskLayer.get() || graphicsLayer == m_scrollingContentsLayer.get()) { |
| InspectorInstrumentationCookie cookie = InspectorInstrumentation::willPaint(m_owningLayer->renderer()->frame()); |
| |
| // The dirtyRect is in the coords of the painting root. |
| IntRect dirtyRect = clip; |
| if (!(paintingPhase & GraphicsLayerPaintOverflowContents)) |
| dirtyRect.intersect(compositedBounds()); |
| |
| // We have to use the same root as for hit testing, because both methods can compute and cache clipRects. |
| paintIntoLayer(m_owningLayer, &context, dirtyRect, PaintBehaviorNormal, paintingPhase, renderer()); |
| |
| if (m_usingTiledCacheLayer) |
| m_owningLayer->renderer()->frame()->view()->setLastPaintTime(currentTime()); |
| |
| InspectorInstrumentation::didPaint(cookie, &context, clip); |
| } else if (graphicsLayer == layerForHorizontalScrollbar()) { |
| paintScrollbar(m_owningLayer->horizontalScrollbar(), context, clip); |
| } else if (graphicsLayer == layerForVerticalScrollbar()) { |
| paintScrollbar(m_owningLayer->verticalScrollbar(), context, clip); |
| } else if (graphicsLayer == layerForScrollCorner()) { |
| const IntRect& scrollCornerAndResizer = m_owningLayer->scrollCornerAndResizerRect(); |
| context.save(); |
| context.translate(-scrollCornerAndResizer.x(), -scrollCornerAndResizer.y()); |
| IntRect transformedClip = clip; |
| transformedClip.moveBy(scrollCornerAndResizer.location()); |
| m_owningLayer->paintScrollCorner(&context, IntPoint(), transformedClip); |
| m_owningLayer->paintResizer(&context, IntPoint(), transformedClip); |
| context.restore(); |
| } |
| #ifndef NDEBUG |
| if (Page* page = renderer()->frame()->page()) |
| page->setIsPainting(false); |
| #endif |
| } |
| |
| float RenderLayerBacking::pageScaleFactor() const |
| { |
| return compositor()->pageScaleFactor(); |
| } |
| |
| float RenderLayerBacking::deviceScaleFactor() const |
| { |
| return compositor()->deviceScaleFactor(); |
| } |
| |
| void RenderLayerBacking::didCommitChangesForLayer(const GraphicsLayer*) const |
| { |
| compositor()->didFlushChangesForLayer(m_owningLayer); |
| } |
| |
| bool RenderLayerBacking::getCurrentTransform(const GraphicsLayer* graphicsLayer, TransformationMatrix& transform) const |
| { |
| if (graphicsLayer != m_graphicsLayer) |
| return false; |
| |
| if (m_owningLayer->hasTransform()) { |
| transform = m_owningLayer->currentTransform(RenderStyle::ExcludeTransformOrigin); |
| return true; |
| } |
| return false; |
| } |
| |
| bool RenderLayerBacking::isTrackingRepaints() const |
| { |
| GraphicsLayerClient* client = compositor(); |
| return client ? client->isTrackingRepaints() : false; |
| } |
| |
| #ifndef NDEBUG |
| void RenderLayerBacking::verifyNotPainting() |
| { |
| ASSERT(!renderer()->frame()->page() || !renderer()->frame()->page()->isPainting()); |
| } |
| #endif |
| |
| bool RenderLayerBacking::startAnimation(double timeOffset, const Animation* anim, const KeyframeList& keyframes) |
| { |
| bool hasOpacity = keyframes.containsProperty(CSSPropertyOpacity); |
| bool hasTransform = renderer()->isBox() && keyframes.containsProperty(CSSPropertyWebkitTransform); |
| #if ENABLE(CSS_FILTERS) |
| bool hasFilter = keyframes.containsProperty(CSSPropertyWebkitFilter); |
| #else |
| bool hasFilter = false; |
| #endif |
| |
| if (!hasOpacity && !hasTransform && !hasFilter) |
| return false; |
| |
| KeyframeValueList transformVector(AnimatedPropertyWebkitTransform); |
| KeyframeValueList opacityVector(AnimatedPropertyOpacity); |
| #if ENABLE(CSS_FILTERS) |
| KeyframeValueList filterVector(AnimatedPropertyWebkitFilter); |
| #endif |
| |
| size_t numKeyframes = keyframes.size(); |
| for (size_t i = 0; i < numKeyframes; ++i) { |
| const KeyframeValue& currentKeyframe = keyframes[i]; |
| const RenderStyle* keyframeStyle = currentKeyframe.style(); |
| float key = currentKeyframe.key(); |
| |
| if (!keyframeStyle) |
| continue; |
| |
| // Get timing function. |
| RefPtr<TimingFunction> tf = keyframeStyle->hasAnimations() ? (*keyframeStyle->animations()).animation(0)->timingFunction() : 0; |
| |
| bool isFirstOrLastKeyframe = key == 0 || key == 1; |
| if ((hasTransform && isFirstOrLastKeyframe) || currentKeyframe.containsProperty(CSSPropertyWebkitTransform)) |
| transformVector.insert(new TransformAnimationValue(key, &(keyframeStyle->transform()), tf)); |
| |
| if ((hasOpacity && isFirstOrLastKeyframe) || currentKeyframe.containsProperty(CSSPropertyOpacity)) |
| opacityVector.insert(new FloatAnimationValue(key, keyframeStyle->opacity(), tf)); |
| |
| #if ENABLE(CSS_FILTERS) |
| if ((hasFilter && isFirstOrLastKeyframe) || currentKeyframe.containsProperty(CSSPropertyWebkitFilter)) |
| filterVector.insert(new FilterAnimationValue(key, &(keyframeStyle->filter()), tf)); |
| #endif |
| } |
| |
| bool didAnimateTransform = false; |
| bool didAnimateOpacity = false; |
| #if ENABLE(CSS_FILTERS) |
| bool didAnimateFilter = false; |
| #endif |
| |
| if (hasTransform && m_graphicsLayer->addAnimation(transformVector, toRenderBox(renderer())->pixelSnappedBorderBoxRect().size(), anim, keyframes.animationName(), timeOffset)) |
| didAnimateTransform = true; |
| |
| if (hasOpacity && m_graphicsLayer->addAnimation(opacityVector, IntSize(), anim, keyframes.animationName(), timeOffset)) |
| didAnimateOpacity = true; |
| |
| #if ENABLE(CSS_FILTERS) |
| if (hasFilter && m_graphicsLayer->addAnimation(filterVector, IntSize(), anim, keyframes.animationName(), timeOffset)) |
| didAnimateFilter = true; |
| #endif |
| |
| #if ENABLE(CSS_FILTERS) |
| return didAnimateTransform || didAnimateOpacity || didAnimateFilter; |
| #else |
| return didAnimateTransform || didAnimateOpacity; |
| #endif |
| } |
| |
| void RenderLayerBacking::animationPaused(double timeOffset, const String& animationName) |
| { |
| m_graphicsLayer->pauseAnimation(animationName, timeOffset); |
| } |
| |
| void RenderLayerBacking::animationFinished(const String& animationName) |
| { |
| m_graphicsLayer->removeAnimation(animationName); |
| } |
| |
| bool RenderLayerBacking::startTransition(double timeOffset, CSSPropertyID property, const RenderStyle* fromStyle, const RenderStyle* toStyle) |
| { |
| bool didAnimateOpacity = false; |
| bool didAnimateTransform = false; |
| #if ENABLE(CSS_FILTERS) |
| bool didAnimateFilter = false; |
| #endif |
| |
| ASSERT(property != CSSPropertyInvalid); |
| |
| if (property == CSSPropertyOpacity) { |
| const Animation* opacityAnim = toStyle->transitionForProperty(CSSPropertyOpacity); |
| if (opacityAnim && !opacityAnim->isEmptyOrZeroDuration()) { |
| KeyframeValueList opacityVector(AnimatedPropertyOpacity); |
| opacityVector.insert(new FloatAnimationValue(0, compositingOpacity(fromStyle->opacity()))); |
| opacityVector.insert(new FloatAnimationValue(1, compositingOpacity(toStyle->opacity()))); |
| // The boxSize param is only used for transform animations (which can only run on RenderBoxes), so we pass an empty size here. |
| if (m_graphicsLayer->addAnimation(opacityVector, IntSize(), opacityAnim, GraphicsLayer::animationNameForTransition(AnimatedPropertyOpacity), timeOffset)) { |
| // To ensure that the correct opacity is visible when the animation ends, also set the final opacity. |
| updateOpacity(toStyle); |
| didAnimateOpacity = true; |
| } |
| } |
| } |
| |
| if (property == CSSPropertyWebkitTransform && m_owningLayer->hasTransform()) { |
| const Animation* transformAnim = toStyle->transitionForProperty(CSSPropertyWebkitTransform); |
| if (transformAnim && !transformAnim->isEmptyOrZeroDuration()) { |
| KeyframeValueList transformVector(AnimatedPropertyWebkitTransform); |
| transformVector.insert(new TransformAnimationValue(0, &fromStyle->transform())); |
| transformVector.insert(new TransformAnimationValue(1, &toStyle->transform())); |
| if (m_graphicsLayer->addAnimation(transformVector, toRenderBox(renderer())->pixelSnappedBorderBoxRect().size(), transformAnim, GraphicsLayer::animationNameForTransition(AnimatedPropertyWebkitTransform), timeOffset)) { |
| // To ensure that the correct transform is visible when the animation ends, also set the final transform. |
| updateTransform(toStyle); |
| didAnimateTransform = true; |
| } |
| } |
| } |
| |
| #if ENABLE(CSS_FILTERS) |
| if (property == CSSPropertyWebkitFilter && m_owningLayer->hasFilter()) { |
| const Animation* filterAnim = toStyle->transitionForProperty(CSSPropertyWebkitFilter); |
| if (filterAnim && !filterAnim->isEmptyOrZeroDuration()) { |
| KeyframeValueList filterVector(AnimatedPropertyWebkitFilter); |
| filterVector.insert(new FilterAnimationValue(0, &fromStyle->filter())); |
| filterVector.insert(new FilterAnimationValue(1, &toStyle->filter())); |
| if (m_graphicsLayer->addAnimation(filterVector, IntSize(), filterAnim, GraphicsLayer::animationNameForTransition(AnimatedPropertyWebkitFilter), timeOffset)) { |
| // To ensure that the correct filter is visible when the animation ends, also set the final filter. |
| updateFilters(toStyle); |
| didAnimateFilter = true; |
| } |
| } |
| } |
| #endif |
| |
| #if ENABLE(CSS_FILTERS) |
| return didAnimateOpacity || didAnimateTransform || didAnimateFilter; |
| #else |
| return didAnimateOpacity || didAnimateTransform; |
| #endif |
| } |
| |
| void RenderLayerBacking::transitionPaused(double timeOffset, CSSPropertyID property) |
| { |
| AnimatedPropertyID animatedProperty = cssToGraphicsLayerProperty(property); |
| if (animatedProperty != AnimatedPropertyInvalid) |
| m_graphicsLayer->pauseAnimation(GraphicsLayer::animationNameForTransition(animatedProperty), timeOffset); |
| } |
| |
| void RenderLayerBacking::transitionFinished(CSSPropertyID property) |
| { |
| AnimatedPropertyID animatedProperty = cssToGraphicsLayerProperty(property); |
| if (animatedProperty != AnimatedPropertyInvalid) |
| m_graphicsLayer->removeAnimation(GraphicsLayer::animationNameForTransition(animatedProperty)); |
| } |
| |
| void RenderLayerBacking::notifyAnimationStarted(const GraphicsLayer*, double time) |
| { |
| renderer()->animation()->notifyAnimationStarted(renderer(), time); |
| } |
| |
| void RenderLayerBacking::notifyFlushRequired(const GraphicsLayer*) |
| { |
| if (!renderer()->documentBeingDestroyed()) |
| compositor()->scheduleLayerFlush(); |
| } |
| |
| void RenderLayerBacking::notifyFlushBeforeDisplayRefresh(const GraphicsLayer* layer) |
| { |
| compositor()->notifyFlushBeforeDisplayRefresh(layer); |
| } |
| |
| // This is used for the 'freeze' API, for testing only. |
| void RenderLayerBacking::suspendAnimations(double time) |
| { |
| m_graphicsLayer->suspendAnimations(time); |
| } |
| |
| void RenderLayerBacking::resumeAnimations() |
| { |
| m_graphicsLayer->resumeAnimations(); |
| } |
| |
| IntRect RenderLayerBacking::compositedBounds() const |
| { |
| return m_compositedBounds; |
| } |
| |
| void RenderLayerBacking::setCompositedBounds(const IntRect& bounds) |
| { |
| m_compositedBounds = bounds; |
| } |
| |
| CSSPropertyID RenderLayerBacking::graphicsLayerToCSSProperty(AnimatedPropertyID property) |
| { |
| CSSPropertyID cssProperty = CSSPropertyInvalid; |
| switch (property) { |
| case AnimatedPropertyWebkitTransform: |
| cssProperty = CSSPropertyWebkitTransform; |
| break; |
| case AnimatedPropertyOpacity: |
| cssProperty = CSSPropertyOpacity; |
| break; |
| case AnimatedPropertyBackgroundColor: |
| cssProperty = CSSPropertyBackgroundColor; |
| break; |
| case AnimatedPropertyWebkitFilter: |
| #if ENABLE(CSS_FILTERS) |
| cssProperty = CSSPropertyWebkitFilter; |
| #else |
| ASSERT_NOT_REACHED(); |
| #endif |
| break; |
| case AnimatedPropertyInvalid: |
| ASSERT_NOT_REACHED(); |
| } |
| return cssProperty; |
| } |
| |
| AnimatedPropertyID RenderLayerBacking::cssToGraphicsLayerProperty(CSSPropertyID cssProperty) |
| { |
| switch (cssProperty) { |
| case CSSPropertyWebkitTransform: |
| return AnimatedPropertyWebkitTransform; |
| case CSSPropertyOpacity: |
| return AnimatedPropertyOpacity; |
| case CSSPropertyBackgroundColor: |
| return AnimatedPropertyBackgroundColor; |
| #if ENABLE(CSS_FILTERS) |
| case CSSPropertyWebkitFilter: |
| return AnimatedPropertyWebkitFilter; |
| #endif |
| default: |
| // It's fine if we see other css properties here; they are just not accelerated. |
| break; |
| } |
| return AnimatedPropertyInvalid; |
| } |
| |
| String RenderLayerBacking::nameForLayer() const |
| { |
| StringBuilder name; |
| name.append(renderer()->renderName()); |
| if (Node* node = renderer()->node()) { |
| if (node->isElementNode()) { |
| name.append(' '); |
| name.append(static_cast<Element*>(node)->tagName()); |
| } |
| if (node->hasID()) { |
| name.appendLiteral(" id=\'"); |
| name.append(static_cast<Element*>(node)->getIdAttribute()); |
| name.append('\''); |
| } |
| |
| if (node->hasClass()) { |
| name.appendLiteral(" class=\'"); |
| StyledElement* styledElement = static_cast<StyledElement*>(node); |
| for (size_t i = 0; i < styledElement->classNames().size(); ++i) { |
| if (i > 0) |
| name.append(' '); |
| name.append(styledElement->classNames()[i]); |
| } |
| name.append('\''); |
| } |
| } |
| |
| if (m_owningLayer->isReflection()) |
| name.appendLiteral(" (reflection)"); |
| |
| return name.toString(); |
| } |
| |
| CompositingLayerType RenderLayerBacking::compositingLayerType() const |
| { |
| if (m_graphicsLayer->hasContentsLayer()) |
| return MediaCompositingLayer; |
| |
| if (m_graphicsLayer->drawsContent()) |
| return m_graphicsLayer->usingTiledLayer() ? TiledCompositingLayer : NormalCompositingLayer; |
| |
| return ContainerCompositingLayer; |
| } |
| |
| double RenderLayerBacking::backingStoreMemoryEstimate() const |
| { |
| double backingMemory; |
| |
| // m_ancestorClippingLayer and m_containmentLayer are just used for masking or containment, so have no backing. |
| backingMemory = m_graphicsLayer->backingStoreMemoryEstimate(); |
| if (m_foregroundLayer) |
| backingMemory += m_foregroundLayer->backingStoreMemoryEstimate(); |
| if (m_maskLayer) |
| backingMemory += m_maskLayer->backingStoreMemoryEstimate(); |
| |
| if (m_scrollingContentsLayer) |
| backingMemory += m_scrollingContentsLayer->backingStoreMemoryEstimate(); |
| |
| if (m_layerForHorizontalScrollbar) |
| backingMemory += m_layerForHorizontalScrollbar->backingStoreMemoryEstimate(); |
| |
| if (m_layerForVerticalScrollbar) |
| backingMemory += m_layerForVerticalScrollbar->backingStoreMemoryEstimate(); |
| |
| if (m_layerForScrollCorner) |
| backingMemory += m_layerForScrollCorner->backingStoreMemoryEstimate(); |
| |
| return backingMemory; |
| } |
| |
| #if PLATFORM(BLACKBERRY) |
| bool RenderLayerBacking::contentsVisible(const GraphicsLayer*, const IntRect& localContentRect) const |
| { |
| Frame* frame = renderer()->frame(); |
| FrameView* view = frame ? frame->view() : 0; |
| if (!view) |
| return false; |
| |
| IntRect visibleContentRect(view->visibleContentRect()); |
| FloatQuad absoluteContentQuad = renderer()->localToAbsoluteQuad(FloatRect(localContentRect), SnapOffsetForTransforms); |
| return absoluteContentQuad.enclosingBoundingBox().intersects(visibleContentRect); |
| } |
| #endif |
| |
| } // namespace WebCore |
| |
| #endif // USE(ACCELERATED_COMPOSITING) |
