| /* |
| * Copyright (C) 2009 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 "CanvasRenderingContext2D.h" |
| #include "CSSPropertyNames.h" |
| #include "CSSStyleSelector.h" |
| #include "FrameView.h" |
| #include "GraphicsContext.h" |
| #include "GraphicsLayer.h" |
| #include "HTMLCanvasElement.h" |
| #include "HTMLElement.h" |
| #include "HTMLIFrameElement.h" |
| #include "HTMLMediaElement.h" |
| #include "HTMLNames.h" |
| #include "InspectorInstrumentation.h" |
| #include "KeyframeList.h" |
| #include "PluginViewBase.h" |
| #include "RenderApplet.h" |
| #include "RenderBox.h" |
| #include "RenderIFrame.h" |
| #include "RenderImage.h" |
| #include "RenderLayerCompositor.h" |
| #include "RenderEmbeddedObject.h" |
| #include "RenderVideo.h" |
| #include "RenderView.h" |
| #include "Settings.h" |
| |
| #if ENABLE(WEBGL) || ENABLE(ACCELERATED_2D_CANVAS) |
| #include "GraphicsContext3D.h" |
| #endif |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| static bool hasBorderOutlineOrShadow(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; |
| } |
| |
| RenderLayerBacking::RenderLayerBacking(RenderLayer* layer) |
| : m_owningLayer(layer) |
| , m_artificiallyInflatedBounds(false) |
| { |
| createGraphicsLayer(); |
| } |
| |
| RenderLayerBacking::~RenderLayerBacking() |
| { |
| updateClippingLayers(false, false); |
| updateOverflowControlsLayers(false, false, false); |
| updateForegroundLayer(false); |
| updateMaskLayer(false); |
| destroyGraphicsLayer(); |
| } |
| |
| void RenderLayerBacking::createGraphicsLayer() |
| { |
| m_graphicsLayer = GraphicsLayer::create(this); |
| |
| #ifndef NDEBUG |
| m_graphicsLayer->setName(nameForLayer()); |
| #endif // NDEBUG |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| ASSERT(renderer() && renderer()->document() && renderer()->document()->frame()); |
| if (Frame* frame = renderer()->document()->frame()) |
| m_graphicsLayer->setContentsScale(frame->pageScaleFactor()); |
| #endif |
| |
| updateLayerOpacity(renderer()->style()); |
| updateLayerTransform(renderer()->style()); |
| } |
| |
| void RenderLayerBacking::destroyGraphicsLayer() |
| { |
| if (m_graphicsLayer) |
| m_graphicsLayer->removeFromParent(); |
| |
| m_graphicsLayer = 0; |
| m_foregroundLayer = 0; |
| m_clippingLayer = 0; |
| m_maskLayer = 0; |
| } |
| |
| void RenderLayerBacking::updateLayerOpacity(const RenderStyle* style) |
| { |
| m_graphicsLayer->setOpacity(compositingOpacity(style->opacity())); |
| } |
| |
| void RenderLayerBacking::updateLayerTransform(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())->borderBoxRect().size(), RenderStyle::ExcludeTransformOrigin); |
| makeMatrixRenderable(t, compositor()->canRender3DTransforms()); |
| } |
| |
| m_graphicsLayer->setTransform(t); |
| } |
| |
| 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 layerOrAncestorIsTransformed(RenderLayer* layer) |
| { |
| for (RenderLayer* curr = layer; curr; curr = curr->parent()) { |
| if (curr->hasTransform()) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| #if ENABLE(FULLSCREEN_API) |
| static bool layerOrAncestorIsFullScreen(RenderLayer* layer) |
| { |
| // Don't traverse through the render layer tree if we do not yet have a full screen renderer. |
| if (!layer->renderer()->document()->fullScreenRenderer()) |
| return false; |
| |
| for (RenderLayer* curr = layer; curr; curr = curr->parent()) { |
| if (curr->renderer()->isRenderFullScreen()) |
| return true; |
| } |
| |
| return false; |
| } |
| #endif |
| |
| 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 this |
| // is a fullscreen renderer, don't clip to the viewport, as the renderer will be asked to |
| // display outside of the viewport bounds. |
| if (compositor()->compositingConsultsOverlap() && !layerOrAncestorIsTransformed(m_owningLayer) |
| #if ENABLE(FULLSCREEN_API) |
| && !layerOrAncestorIsFullScreen(m_owningLayer) |
| #endif |
| ) { |
| RenderView* view = m_owningLayer->renderer()->view(); |
| RenderLayer* rootLayer = view->layer(); |
| |
| // Start by clipping to the view's bounds. |
| IntRect clippingBounds = view->layoutOverflowRect(); |
| |
| if (m_owningLayer != rootLayer) |
| clippingBounds.intersect(m_owningLayer->backgroundClipRect(rootLayer, true)); |
| |
| int deltaX = 0; |
| int deltaY = 0; |
| m_owningLayer->convertToLayerCoords(rootLayer, deltaX, deltaY); |
| clippingBounds.move(-deltaX, -deltaY); |
| |
| layerBounds.intersect(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(); |
| |
| bool layerConfigChanged = false; |
| if (updateForegroundLayer(compositor->needsContentsCompositingLayer(m_owningLayer))) |
| layerConfigChanged = true; |
| |
| if (updateClippingLayers(compositor->clippedByAncestor(m_owningLayer), compositor->clipsCompositingDescendants(m_owningLayer))) |
| layerConfigChanged = true; |
| |
| if (updateOverflowControlsLayers(requiresHorizontalScrollbarLayer(), requiresVerticalScrollbarLayer(), requiresScrollCornerLayer())) |
| layerConfigChanged = true; |
| |
| if (layerConfigChanged) |
| updateInternalHierarchy(); |
| |
| 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()) |
| || (renderer->isApplet() && toRenderApplet(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 (renderer->isRenderPart()) |
| layerConfigChanged = RenderLayerCompositor::parentFrameContentLayers(toRenderPart(renderer)); |
| |
| return layerConfigChanged; |
| } |
| |
| static IntRect clipBox(RenderBox* renderer) |
| { |
| IntRect result = PaintInfo::infiniteRect(); |
| if (renderer->hasOverflowClip()) |
| result = renderer->overflowClipRect(0, 0); |
| |
| if (renderer->hasClip()) |
| result.intersect(renderer->clipRect(0, 0)); |
| |
| return 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)) |
| updateLayerTransform(renderer()->style()); |
| |
| // Set opacity, if it is not animating. |
| if (!renderer()->animation()->isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyOpacity)) |
| updateLayerOpacity(renderer()->style()); |
| |
| RenderStyle* style = renderer()->style(); |
| m_graphicsLayer->setPreserves3D(style->transformStyle3D() == TransformStyle3DPreserve3D && !renderer()->hasReflection()); |
| m_graphicsLayer->setBackfaceVisibility(style->backfaceVisibility() == BackfaceVisibilityVisible); |
| |
| RenderLayer* compAncestor = m_owningLayer->ancestorCompositingLayer(); |
| |
| // We compute everything relative to the enclosing compositing layer. |
| IntRect ancestorCompositingBounds; |
| if (compAncestor) { |
| ASSERT(compAncestor->backing()); |
| ancestorCompositingBounds = compAncestor->backing()->compositedBounds(); |
| } |
| |
| IntRect localCompositingBounds = compositedBounds(); |
| |
| IntRect relativeCompositingBounds(localCompositingBounds); |
| int deltaX = 0, deltaY = 0; |
| m_owningLayer->convertToLayerCoords(compAncestor, deltaX, deltaY); |
| relativeCompositingBounds.move(deltaX, deltaY); |
| |
| 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 |
| graphicsLayerParentLocation = ancestorCompositingBounds.location(); |
| |
| 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 = m_owningLayer->backgroundClipRect(compAncestor, true); |
| 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. |
| IntSize rendererOffset(parentClipRect.location().x() - deltaX, parentClipRect.location().y() - deltaY); |
| m_ancestorClippingLayer->setOffsetFromRenderer(rendererOffset); |
| |
| // The primary layer is then parented in, and positioned relative to this clipping layer. |
| graphicsLayerParentLocation = parentClipRect.location(); |
| } |
| |
| m_graphicsLayer->setPosition(FloatPoint() + (relativeCompositingBounds.location() - graphicsLayerParentLocation)); |
| |
| IntSize oldOffsetFromRenderer = m_graphicsLayer->offsetFromRenderer(); |
| m_graphicsLayer->setOffsetFromRenderer(localCompositingBounds.location() - IntPoint()); |
| |
| // If the compositing layer offset changes, we need to repaint. |
| if (oldOffsetFromRenderer != m_graphicsLayer->offsetFromRenderer()) |
| m_graphicsLayer->setNeedsDisplay(); |
| |
| 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 (m_clippingLayer) { |
| clippingBox = clipBox(toRenderBox(renderer())); |
| m_clippingLayer->setPosition(FloatPoint() + (clippingBox.location() - localCompositingBounds.location())); |
| m_clippingLayer->setSize(clippingBox.size()); |
| m_clippingLayer->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()); |
| } |
| |
| if (m_owningLayer->hasTransform()) { |
| const IntRect borderBox = toRenderBox(renderer())->borderBoxRect(); |
| |
| // Get layout bounds in the coords of compAncestor to match relativeCompositingBounds. |
| IntRect layerBounds = IntRect(deltaX, deltaY, borderBox.width(), borderBox.height()); |
| |
| // 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(); |
| if (style->hasPerspective()) { |
| TransformationMatrix t = owningLayer()->perspectiveTransform(); |
| |
| if (m_clippingLayer) { |
| m_clippingLayer->setChildrenTransform(t); |
| m_graphicsLayer->setChildrenTransform(TransformationMatrix()); |
| } |
| else |
| m_graphicsLayer->setChildrenTransform(t); |
| } else { |
| if (m_clippingLayer) |
| m_clippingLayer->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 (m_clippingLayer) { |
| // 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); |
| m_foregroundLayer->setSize(foregroundSize); |
| 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())); |
| } |
| |
| m_graphicsLayer->setContentsRect(contentsBox()); |
| 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_clippingLayer) { |
| m_clippingLayer->removeFromParent(); |
| m_graphicsLayer->addChild(m_clippingLayer.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() |
| { |
| m_graphicsLayer->setDrawsContent(containsPaintedContent()); |
| } |
| |
| // Return true if the layers changed. |
| bool RenderLayerBacking::updateClippingLayers(bool needsAncestorClip, bool needsDescendantClip) |
| { |
| bool layersChanged = false; |
| |
| if (needsAncestorClip) { |
| if (!m_ancestorClippingLayer) { |
| m_ancestorClippingLayer = GraphicsLayer::create(this); |
| #ifndef NDEBUG |
| m_ancestorClippingLayer->setName("Ancestor clipping Layer"); |
| #endif |
| m_ancestorClippingLayer->setMasksToBounds(true); |
| layersChanged = true; |
| } |
| } else if (m_ancestorClippingLayer) { |
| m_ancestorClippingLayer->removeFromParent(); |
| m_ancestorClippingLayer = 0; |
| layersChanged = true; |
| } |
| |
| if (needsDescendantClip) { |
| if (!m_clippingLayer) { |
| m_clippingLayer = GraphicsLayer::create(this); |
| #ifndef NDEBUG |
| m_clippingLayer->setName("Child clipping Layer"); |
| #endif |
| m_clippingLayer->setMasksToBounds(true); |
| layersChanged = true; |
| } |
| } else if (m_clippingLayer) { |
| m_clippingLayer->removeFromParent(); |
| m_clippingLayer = 0; |
| 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 = GraphicsLayer::create(this); |
| #ifndef NDEBUG |
| m_layerForHorizontalScrollbar ->setName("horizontal scrollbar"); |
| #endif |
| layersChanged = true; |
| } |
| } else if (m_layerForHorizontalScrollbar) { |
| m_layerForHorizontalScrollbar.clear(); |
| layersChanged = true; |
| } |
| |
| if (needsVerticalScrollbarLayer) { |
| if (!m_layerForVerticalScrollbar) { |
| m_layerForVerticalScrollbar = GraphicsLayer::create(this); |
| #ifndef NDEBUG |
| m_layerForVerticalScrollbar->setName("vertical scrollbar"); |
| #endif |
| layersChanged = true; |
| } |
| } else if (m_layerForVerticalScrollbar) { |
| m_layerForVerticalScrollbar.clear(); |
| layersChanged = true; |
| } |
| |
| if (needsScrollCornerLayer) { |
| if (!m_layerForScrollCorner) { |
| m_layerForScrollCorner = GraphicsLayer::create(this); |
| #ifndef NDEBUG |
| m_layerForScrollCorner->setName("scroll corner"); |
| #endif |
| layersChanged = true; |
| } |
| } else if (m_layerForScrollCorner) { |
| m_layerForScrollCorner.clear(); |
| layersChanged = true; |
| } |
| |
| return layersChanged; |
| } |
| |
| bool RenderLayerBacking::updateForegroundLayer(bool needsForegroundLayer) |
| { |
| bool layerChanged = false; |
| if (needsForegroundLayer) { |
| if (!m_foregroundLayer) { |
| m_foregroundLayer = GraphicsLayer::create(this); |
| #ifndef NDEBUG |
| m_foregroundLayer->setName(nameForLayer() + " (foreground)"); |
| #endif |
| m_foregroundLayer->setDrawsContent(true); |
| m_foregroundLayer->setPaintingPhase(GraphicsLayerPaintForeground); |
| if (Frame* frame = renderer()->document()->frame()) |
| m_foregroundLayer->setContentsScale(frame->pageScaleFactor()); |
| layerChanged = true; |
| } |
| } else if (m_foregroundLayer) { |
| m_foregroundLayer->removeFromParent(); |
| m_foregroundLayer = 0; |
| 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 = GraphicsLayer::create(this); |
| #ifndef NDEBUG |
| m_maskLayer->setName("Mask"); |
| #endif |
| m_maskLayer->setDrawsContent(true); |
| m_maskLayer->setPaintingPhase(GraphicsLayerPaintMask); |
| if (Frame* frame = renderer()->document()->frame()) |
| m_maskLayer->setContentsScale(frame->pageScaleFactor()); |
| layerChanged = true; |
| } |
| } else if (m_maskLayer) { |
| m_maskLayer = 0; |
| layerChanged = true; |
| } |
| |
| if (layerChanged) |
| m_graphicsLayer->setPaintingPhase(paintingPhaseForPrimaryLayer()); |
| |
| return layerChanged; |
| } |
| |
| GraphicsLayerPaintingPhase RenderLayerBacking::paintingPhaseForPrimaryLayer() const |
| { |
| unsigned phase = GraphicsLayerPaintBackground; |
| if (!m_foregroundLayer) |
| phase |= GraphicsLayerPaintForeground; |
| if (!m_maskLayer) |
| phase |= GraphicsLayerPaintMask; |
| |
| 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 hasBorderOutlineOrShadow(const RenderStyle* style) |
| { |
| return style->hasBorder() || style->hasBorderRadius() || style->hasOutline() || style->hasAppearance() || style->boxShadow(); |
| } |
| |
| static bool hasBoxDecorationsOrBackground(const RenderObject* renderer) |
| { |
| return hasBorderOutlineOrShadow(renderer->style()) || renderer->hasBackground(); |
| } |
| |
| static bool hasBoxDecorationsOrBackgroundImage(const RenderStyle* style) |
| { |
| return hasBorderOutlineOrShadow(style) || style->hasBackgroundImage(); |
| } |
| |
| bool RenderLayerBacking::rendererHasBackground() const |
| { |
| // FIXME: share more code here |
| if (renderer()->node() && renderer()->node()->isDocumentNode()) { |
| RenderObject* htmlObject = renderer()->firstChild(); |
| if (!htmlObject) |
| return false; |
| |
| if (htmlObject->hasBackground()) |
| return true; |
| |
| RenderObject* bodyObject = htmlObject->firstChild(); |
| if (!bodyObject) |
| return false; |
| |
| return bodyObject->hasBackground(); |
| } |
| |
| return renderer()->hasBackground(); |
| } |
| |
| const Color RenderLayerBacking::rendererBackgroundColor() const |
| { |
| // FIXME: share more code here |
| if (renderer()->node() && renderer()->node()->isDocumentNode()) { |
| RenderObject* htmlObject = renderer()->firstChild(); |
| if (htmlObject->hasBackground()) |
| return htmlObject->style()->visitedDependentColor(CSSPropertyBackgroundColor); |
| |
| RenderObject* bodyObject = htmlObject->firstChild(); |
| return bodyObject->style()->visitedDependentColor(CSSPropertyBackgroundColor); |
| } |
| |
| return renderer()->style()->visitedDependentColor(CSSPropertyBackgroundColor); |
| } |
| |
| // 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->isReplaced() || // replaced objects are not containers |
| renderObject->hasMask()) // masks require special treatment |
| return false; |
| |
| RenderStyle* style = renderObject->style(); |
| |
| // Reject anything that has a border, a border-radius or outline, |
| // or any background (color or image). |
| // FIXME: we could optimize layers for simple backgrounds. |
| if (hasBoxDecorationsOrBackground(renderObject)) |
| return false; |
| |
| if (m_owningLayer->hasOverflowControls()) |
| return false; |
| |
| // If we have got this far and the renderer has no children, then we're ok. |
| if (!renderObject->firstChild()) |
| return true; |
| |
| if (renderObject->node() && renderObject->node()->isDocumentNode()) { |
| // Look to see if the root object has a non-simple backgound |
| RenderObject* rootObject = renderObject->document()->documentElement()->renderer(); |
| if (!rootObject) |
| return false; |
| |
| 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; |
| |
| // Check to see if all the body's children are compositing layers. |
| if (hasNonCompositingDescendants()) |
| return false; |
| |
| return true; |
| } |
| |
| // Check to see if all the renderer's children are compositing layers. |
| if (hasNonCompositingDescendants()) |
| return false; |
| |
| return true; |
| } |
| |
| // Conservative test for having no rendered children. |
| bool RenderLayerBacking::hasNonCompositingDescendants() 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; |
| } |
| } |
| |
| if (m_owningLayer->isStackingContext()) { |
| // 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()) |
| 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()) |
| return true; |
| } |
| } |
| } |
| |
| 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()) |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| bool RenderLayerBacking::containsPaintedContent() const |
| { |
| if (isSimpleContainerCompositingLayer() || paintingGoesToWindow() || 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) && !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD) && !defined(BUILDING_ON_SNOW_LEOPARD) |
| #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 cachedImage->image()->isBitmapImage(); |
| } |
| |
| return false; |
| } |
| |
| void RenderLayerBacking::contentChanged(RenderLayer::ContentChangeType changeType) |
| { |
| if ((changeType == RenderLayer::ImageChanged) && isDirectlyCompositedImage()) { |
| updateImageContents(); |
| return; |
| } |
| |
| if ((changeType == RenderLayer::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 == RenderLayer::CanvasChanged) && 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->image(); |
| 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); |
| |
| // 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(style->transformOriginX().calcFloatValue(borderBox.width())); |
| origin.setY(style->transformOriginY().calcFloatValue(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(style->perspectiveOriginX().calcFloatValue(boxWidth)); |
| origin.setY(style->perspectiveOriginY().calcFloatValue(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 = toRenderBox(renderer())->contentBoxRect(); |
| |
| IntSize contentOffset = contentOffsetInCompostingLayer(); |
| contentsRect.move(contentOffset); |
| return contentsRect; |
| } |
| |
| bool RenderLayerBacking::paintingGoesToWindow() const |
| { |
| if (m_owningLayer->isRootLayer()) |
| return compositor()->rootLayerAttachment() != RenderLayerCompositor::RootLayerAttachedViaEnclosingFrame; |
| |
| return false; |
| } |
| |
| void RenderLayerBacking::setContentsNeedDisplay() |
| { |
| 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(); |
| } |
| |
| // r is in the coordinate space of the layer's render object |
| void RenderLayerBacking::setContentsNeedDisplayInRect(const IntRect& r) |
| { |
| 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); |
| } |
| } |
| |
| static void setClip(GraphicsContext* p, const IntRect& paintDirtyRect, const IntRect& clipRect) |
| { |
| if (paintDirtyRect == clipRect) |
| return; |
| p->save(); |
| p->clip(clipRect); |
| } |
| |
| static void restoreClip(GraphicsContext* p, const IntRect& paintDirtyRect, const IntRect& clipRect) |
| { |
| if (paintDirtyRect == clipRect) |
| return; |
| p->restore(); |
| } |
| |
| // Share this with RenderLayer::paintLayer, which would have to be educated about GraphicsLayerPaintingPhase? |
| void RenderLayerBacking::paintIntoLayer(RenderLayer* rootLayer, GraphicsContext* context, |
| const IntRect& paintDirtyRect, // in the coords of rootLayer |
| PaintBehavior paintBehavior, GraphicsLayerPaintingPhase paintingPhase, |
| RenderObject* paintingRoot) |
| { |
| if (paintingGoesToWindow()) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| m_owningLayer->updateLayerListsIfNeeded(); |
| |
| // Calculate the clip rects we should use. |
| IntRect layerBounds, damageRect, clipRectToApply, outlineRect; |
| m_owningLayer->calculateRects(rootLayer, paintDirtyRect, layerBounds, damageRect, clipRectToApply, outlineRect); |
| |
| int x = layerBounds.x(); // layerBounds is computed relative to rootLayer |
| int y = layerBounds.y(); |
| int tx = x - m_owningLayer->renderBoxX(); |
| int ty = y - m_owningLayer->renderBoxY(); |
| |
| // If this layer's renderer is a child of the paintingRoot, we render unconditionally, which |
| // is done by passing a nil paintingRoot down to our renderer (as if no paintingRoot was ever set). |
| // Else, our renderer tree may or may not contain the painting root, so we pass that root along |
| // so it will be tested against as we decend through the renderers. |
| RenderObject *paintingRootForRenderer = 0; |
| if (paintingRoot && !renderer()->isDescendantOf(paintingRoot)) |
| paintingRootForRenderer = paintingRoot; |
| |
| bool shouldPaint = (m_owningLayer->hasVisibleContent() || m_owningLayer->hasVisibleDescendant()) && m_owningLayer->isSelfPaintingLayer(); |
| |
| #if PLATFORM(ANDROID) |
| if (shouldPaint && ((paintingPhase & GraphicsLayerPaintBackground) |
| || (paintingPhase & GraphicsLayerPaintBackgroundDecorations))) { |
| #else |
| if (shouldPaint && (paintingPhase & GraphicsLayerPaintBackground)) { |
| #endif |
| // Paint our background first, before painting any child layers. |
| // Establish the clip used to paint our background. |
| setClip(context, paintDirtyRect, damageRect); |
| |
| #if PLATFORM(ANDROID) |
| PaintPhase phase = PaintPhaseBlockBackground; |
| if (paintingPhase & GraphicsLayerPaintBackgroundDecorations) |
| phase = PaintPhaseBlockBackgroundDecorations; |
| PaintInfo info(context, damageRect, phase, false, paintingRootForRenderer, 0); |
| #else |
| PaintInfo info(context, damageRect, PaintPhaseBlockBackground, false, paintingRootForRenderer, 0); |
| #endif |
| renderer()->paint(info, tx, ty); |
| |
| // Our scrollbar widgets paint exactly when we tell them to, so that they work properly with |
| // z-index. We paint after we painted the background/border, so that the scrollbars will |
| // sit above the background/border. |
| m_owningLayer->paintOverflowControls(context, x, y, damageRect); |
| |
| // Restore the clip. |
| restoreClip(context, paintDirtyRect, damageRect); |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| // Paint the outline as part of the background phase in order for the |
| // outline to not be a part of the scrollable content. |
| if (!outlineRect.isEmpty()) { |
| // Paint our own outline |
| PaintInfo paintInfo(context, outlineRect, PaintPhaseSelfOutline, false, paintingRootForRenderer, 0); |
| setClip(context, paintDirtyRect, outlineRect); |
| renderer()->paint(paintInfo, tx, ty); |
| restoreClip(context, paintDirtyRect, outlineRect); |
| } |
| #endif |
| |
| // Now walk the sorted list of children with negative z-indices. Only RenderLayers without compositing layers will paint. |
| m_owningLayer->paintList(m_owningLayer->negZOrderList(), rootLayer, context, paintDirtyRect, paintBehavior, paintingRoot, 0, 0); |
| } |
| |
| bool forceBlackText = paintBehavior & PaintBehaviorForceBlackText; |
| bool selectionOnly = paintBehavior & PaintBehaviorSelectionOnly; |
| |
| if (shouldPaint && (paintingPhase & GraphicsLayerPaintForeground)) { |
| // Set up the clip used when painting our children. |
| setClip(context, paintDirtyRect, clipRectToApply); |
| PaintInfo paintInfo(context, clipRectToApply, |
| selectionOnly ? PaintPhaseSelection : PaintPhaseChildBlockBackgrounds, |
| forceBlackText, paintingRootForRenderer, 0); |
| renderer()->paint(paintInfo, tx, ty); |
| |
| if (!selectionOnly) { |
| paintInfo.phase = PaintPhaseFloat; |
| renderer()->paint(paintInfo, tx, ty); |
| |
| paintInfo.phase = PaintPhaseForeground; |
| renderer()->paint(paintInfo, tx, ty); |
| |
| paintInfo.phase = PaintPhaseChildOutlines; |
| renderer()->paint(paintInfo, tx, ty); |
| } |
| |
| // Now restore our clip. |
| restoreClip(context, paintDirtyRect, clipRectToApply); |
| |
| #if !ENABLE(ANDROID_OVERFLOW_SCROLL) |
| // Do not paint the outline as part of the foreground since it will |
| // appear inside the scrollable content. |
| if (!outlineRect.isEmpty()) { |
| // Paint our own outline |
| PaintInfo paintInfo(context, outlineRect, PaintPhaseSelfOutline, false, paintingRootForRenderer, 0); |
| setClip(context, paintDirtyRect, outlineRect); |
| renderer()->paint(paintInfo, tx, ty); |
| restoreClip(context, paintDirtyRect, outlineRect); |
| } |
| #endif |
| |
| // Paint any child layers that have overflow. |
| m_owningLayer->paintList(m_owningLayer->normalFlowList(), rootLayer, context, paintDirtyRect, paintBehavior, paintingRoot, 0, 0); |
| |
| // Now walk the sorted list of children with positive z-indices. |
| m_owningLayer->paintList(m_owningLayer->posZOrderList(), rootLayer, context, paintDirtyRect, paintBehavior, paintingRoot, 0, 0); |
| } |
| |
| if (shouldPaint && (paintingPhase & GraphicsLayerPaintMask)) { |
| if (renderer()->hasMask() && !selectionOnly && !damageRect.isEmpty()) { |
| setClip(context, paintDirtyRect, damageRect); |
| |
| // Paint the mask. |
| PaintInfo paintInfo(context, damageRect, PaintPhaseMask, false, paintingRootForRenderer, 0); |
| renderer()->paint(paintInfo, tx, ty); |
| |
| // Restore the clip. |
| restoreClip(context, paintDirtyRect, damageRect); |
| } |
| } |
| |
| 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.move(scrollbarRect.x(), scrollbarRect.y()); |
| 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) |
| { |
| if (graphicsLayer == m_graphicsLayer.get() || graphicsLayer == m_foregroundLayer.get() || graphicsLayer == m_maskLayer.get()) { |
| InspectorInstrumentationCookie cookie = InspectorInstrumentation::willPaint(m_owningLayer->renderer()->frame(), clip); |
| |
| IntSize offset = graphicsLayer->offsetFromRenderer(); |
| context.translate(-offset); |
| |
| IntRect clipRect(clip); |
| clipRect.move(offset); |
| |
| // The dirtyRect is in the coords of the painting root. |
| IntRect dirtyRect = compositedBounds(); |
| dirtyRect.intersect(clipRect); |
| |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| // If we encounter a scrollable layer, layers inside the scrollable layer |
| // will need their entire content recorded. |
| if (m_owningLayer->hasOverflowParent()) |
| dirtyRect.setSize(clip.size()); |
| #endif |
| |
| // 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()); |
| |
| InspectorInstrumentation::didPaint(cookie); |
| } 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.move(scrollCornerAndResizer.x(), scrollCornerAndResizer.y()); |
| m_owningLayer->paintScrollCorner(&context, 0, 0, transformedClip); |
| m_owningLayer->paintResizer(&context, 0, 0, transformedClip); |
| context.restore(); |
| } |
| } |
| |
| bool RenderLayerBacking::showDebugBorders() const |
| { |
| return compositor() ? compositor()->compositorShowDebugBorders() : false; |
| } |
| |
| bool RenderLayerBacking::showRepaintCounter() const |
| { |
| return compositor() ? compositor()->compositorShowRepaintCounter() : false; |
| } |
| |
| bool RenderLayerBacking::startAnimation(double timeOffset, const Animation* anim, const KeyframeList& keyframes) |
| { |
| bool hasOpacity = keyframes.containsProperty(CSSPropertyOpacity); |
| bool hasTransform = renderer()->isBox() && keyframes.containsProperty(CSSPropertyWebkitTransform); |
| |
| if (!hasOpacity && !hasTransform) |
| return false; |
| |
| KeyframeValueList transformVector(AnimatedPropertyWebkitTransform); |
| KeyframeValueList opacityVector(AnimatedPropertyOpacity); |
| |
| 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)); |
| } |
| |
| bool didAnimateTransform = false; |
| bool didAnimateOpacity = false; |
| |
| if (hasTransform && m_graphicsLayer->addAnimation(transformVector, toRenderBox(renderer())->borderBoxRect().size(), anim, keyframes.animationName(), timeOffset)) { |
| didAnimateTransform = true; |
| compositor()->didStartAcceleratedAnimation(CSSPropertyWebkitTransform); |
| } |
| |
| if (hasOpacity && m_graphicsLayer->addAnimation(opacityVector, IntSize(), anim, keyframes.animationName(), timeOffset)) { |
| didAnimateOpacity = true; |
| compositor()->didStartAcceleratedAnimation(CSSPropertyOpacity); |
| } |
| |
| return didAnimateTransform || didAnimateOpacity; |
| } |
| |
| 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, int property, const RenderStyle* fromStyle, const RenderStyle* toStyle) |
| { |
| bool didAnimateOpacity = false; |
| bool didAnimateTransform = false; |
| ASSERT(property != cAnimateAll); |
| |
| if (property == (int)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. |
| updateLayerOpacity(toStyle); |
| didAnimateOpacity = true; |
| } |
| } |
| } |
| |
| if (property == (int)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())->borderBoxRect().size(), transformAnim, GraphicsLayer::animationNameForTransition(AnimatedPropertyWebkitTransform), timeOffset)) { |
| // To ensure that the correct transform is visible when the animation ends, also set the final opacity. |
| updateLayerTransform(toStyle); |
| didAnimateTransform = true; |
| } |
| } |
| } |
| |
| if (didAnimateOpacity) |
| compositor()->didStartAcceleratedAnimation(CSSPropertyOpacity); |
| |
| if (didAnimateTransform) |
| compositor()->didStartAcceleratedAnimation(CSSPropertyWebkitTransform); |
| |
| return didAnimateOpacity || didAnimateTransform; |
| } |
| |
| void RenderLayerBacking::transitionPaused(double timeOffset, int property) |
| { |
| AnimatedPropertyID animatedProperty = cssToGraphicsLayerProperty(property); |
| if (animatedProperty != AnimatedPropertyInvalid) |
| m_graphicsLayer->pauseAnimation(GraphicsLayer::animationNameForTransition(animatedProperty), timeOffset); |
| } |
| |
| void RenderLayerBacking::transitionFinished(int 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::notifySyncRequired(const GraphicsLayer*) |
| { |
| if (!renderer()->documentBeingDestroyed()) |
| compositor()->scheduleLayerFlush(); |
| } |
| |
| // 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; |
| |
| } |
| int RenderLayerBacking::graphicsLayerToCSSProperty(AnimatedPropertyID property) |
| { |
| int cssProperty = CSSPropertyInvalid; |
| switch (property) { |
| case AnimatedPropertyWebkitTransform: |
| cssProperty = CSSPropertyWebkitTransform; |
| break; |
| case AnimatedPropertyOpacity: |
| cssProperty = CSSPropertyOpacity; |
| break; |
| case AnimatedPropertyBackgroundColor: |
| cssProperty = CSSPropertyBackgroundColor; |
| break; |
| case AnimatedPropertyInvalid: |
| ASSERT_NOT_REACHED(); |
| } |
| return cssProperty; |
| } |
| |
| AnimatedPropertyID RenderLayerBacking::cssToGraphicsLayerProperty(int cssProperty) |
| { |
| switch (cssProperty) { |
| case CSSPropertyWebkitTransform: |
| return AnimatedPropertyWebkitTransform; |
| case CSSPropertyOpacity: |
| return AnimatedPropertyOpacity; |
| case CSSPropertyBackgroundColor: |
| return AnimatedPropertyBackgroundColor; |
| // It's fine if we see other css properties here; they are just not accelerated. |
| } |
| return AnimatedPropertyInvalid; |
| } |
| |
| #ifndef NDEBUG |
| String RenderLayerBacking::nameForLayer() const |
| { |
| String name = renderer()->renderName(); |
| if (Node* node = renderer()->node()) { |
| if (node->isElementNode()) |
| name += " " + static_cast<Element*>(node)->tagName(); |
| if (node->hasID()) |
| name += " \'" + static_cast<Element*>(node)->getIdAttribute() + "\'"; |
| } |
| |
| if (m_owningLayer->isReflection()) |
| name += " (reflection)"; |
| |
| return name; |
| } |
| #endif |
| |
| CompositingLayerType RenderLayerBacking::compositingLayerType() const |
| { |
| if (m_graphicsLayer->hasContentsLayer()) |
| return MediaCompositingLayer; |
| |
| if (m_graphicsLayer->drawsContent()) |
| return m_graphicsLayer->usingTiledLayer() ? TiledCompositingLayer : NormalCompositingLayer; |
| |
| return ContainerCompositingLayer; |
| } |
| |
| void RenderLayerBacking::updateContentsScale(float scale) |
| { |
| if (m_graphicsLayer) |
| m_graphicsLayer->setContentsScale(scale); |
| |
| if (m_foregroundLayer) |
| m_foregroundLayer->setContentsScale(scale); |
| |
| if (m_maskLayer) |
| m_maskLayer->setContentsScale(scale); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(ACCELERATED_COMPOSITING) |
