| /* |
| * 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 "AnimationController.h" |
| #include "CSSPropertyNames.h" |
| #include "CSSStyleSelector.h" |
| #include "FrameView.h" |
| #include "GraphicsContext.h" |
| #include "GraphicsLayer.h" |
| #include "HTMLElement.h" |
| #include "HTMLNames.h" |
| #include "RenderBox.h" |
| #include "RenderImage.h" |
| #include "RenderLayerCompositor.h" |
| #include "RenderVideo.h" |
| #include "RenderView.h" |
| |
| #include "RenderLayerBacking.h" |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| static bool hasBorderOutlineOrShadow(const RenderStyle*); |
| static bool hasBoxDecorations(const RenderStyle*); |
| static bool hasBoxDecorationsWithBackgroundImage(const RenderStyle*); |
| |
| RenderLayerBacking::RenderLayerBacking(RenderLayer* layer) |
| : m_owningLayer(layer) |
| , m_ancestorClippingLayer(0) |
| , m_graphicsLayer(0) |
| , m_foregroundLayer(0) |
| , m_clippingLayer(0) |
| , m_hasDirectlyCompositedContent(false) |
| , m_artificiallyInflatedBounds(false) |
| { |
| createGraphicsLayer(); |
| } |
| |
| RenderLayerBacking::~RenderLayerBacking() |
| { |
| updateClippingLayers(false, false); |
| updateForegroundLayer(false); |
| destroyGraphicsLayer(); |
| } |
| |
| void RenderLayerBacking::createGraphicsLayer() |
| { |
| m_graphicsLayer = GraphicsLayer::createGraphicsLayer(this); |
| |
| #ifndef NDEBUG |
| if (renderer()->node()) { |
| if (renderer()->node()->isDocumentNode()) |
| m_graphicsLayer->setName("Document Node"); |
| else { |
| if (renderer()->node()->isHTMLElement() && renderer()->node()->hasID()) |
| m_graphicsLayer->setName(renderer()->renderName() + String(" ") + static_cast<HTMLElement*>(renderer()->node())->id()); |
| else |
| m_graphicsLayer->setName(renderer()->renderName()); |
| } |
| } else |
| m_graphicsLayer->setName("Anonymous Node"); |
| #endif // NDEBUG |
| |
| updateLayerOpacity(); |
| updateLayerTransform(); |
| } |
| |
| void RenderLayerBacking::destroyGraphicsLayer() |
| { |
| if (m_graphicsLayer) |
| m_graphicsLayer->removeFromParent(); |
| |
| delete m_graphicsLayer; |
| m_graphicsLayer = 0; |
| |
| delete m_foregroundLayer; |
| m_foregroundLayer = 0; |
| |
| delete m_clippingLayer; |
| m_clippingLayer = 0; |
| } |
| |
| void RenderLayerBacking::updateLayerOpacity() |
| { |
| m_graphicsLayer->setOpacity(compositingOpacity(renderer()->opacity())); |
| } |
| |
| void RenderLayerBacking::updateLayerTransform() |
| { |
| RenderStyle* style = renderer()->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()->hasAcceleratedCompositing()); |
| } |
| |
| 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()); |
| } |
| |
| void RenderLayerBacking::updateCompositedBounds() |
| { |
| IntRect layerBounds = compositor()->calculateCompositedBounds(m_owningLayer, m_owningLayer); |
| |
| // 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::updateAfterLayout(UpdateDepth updateDepth) |
| { |
| 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 (!m_owningLayer->parent()) { |
| updateGraphicsLayerGeometry(); |
| layerCompositor->updateRootLayerPosition(); |
| } |
| } |
| } |
| |
| bool RenderLayerBacking::updateGraphicsLayerConfiguration() |
| { |
| RenderLayerCompositor* compositor = this->compositor(); |
| |
| bool layerConfigChanged = false; |
| if (updateForegroundLayer(compositor->needsContentsCompositingLayer(m_owningLayer))) |
| layerConfigChanged = true; |
| |
| if (updateClippingLayers(compositor->clippedByAncestor(m_owningLayer), compositor->clipsCompositingDescendants(m_owningLayer))) |
| layerConfigChanged = true; |
| |
| m_hasDirectlyCompositedContent = false; |
| if (canUseDirectCompositing()) { |
| if (renderer()->isImage()) { |
| updateImageContents(); |
| m_hasDirectlyCompositedContent = true; |
| m_graphicsLayer->setDrawsContent(false); |
| } |
| |
| if (rendererHasBackground()) |
| m_graphicsLayer->setBackgroundColor(rendererBackgroundColor()); |
| else |
| m_graphicsLayer->clearBackgroundColor(); |
| } |
| |
| return layerConfigChanged; |
| } |
| |
| 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()->isAnimatingPropertyOnRenderer(renderer(), CSSPropertyWebkitTransform)) |
| updateLayerTransform(); |
| |
| // Set opacity, if it is not animating. |
| if (!renderer()->animation()->isAnimatingPropertyOnRenderer(renderer(), CSSPropertyOpacity)) |
| updateLayerOpacity(); |
| |
| RenderStyle* style = renderer()->style(); |
| m_graphicsLayer->setPreserves3D(style->transformStyle3D() == TransformStyle3DPreserve3D); |
| 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. |
| graphicsLayerParentLocation = toRenderBox(compAncestor->renderer())->overflowClipRect(0, 0).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. |
| ClipRects parentRects; |
| m_owningLayer->parentClipRects(compAncestor, parentRects, true); |
| IntRect parentClipRect = parentRects.overflowClipRect(); |
| |
| 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)); |
| 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. |
| if (m_clippingLayer) { |
| IntRect clippingBox = toRenderBox(renderer())->overflowClipRect(0, 0); |
| m_clippingLayer->setPosition(FloatPoint() + (clippingBox.location() - localCompositingBounds.location())); |
| m_clippingLayer->setSize(clippingBox.size()); |
| m_clippingLayer->setOffsetFromRenderer(clippingBox.location() - IntPoint()); |
| } |
| |
| 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) { |
| // The contents layer is always coincidental with the graphicsLayer for now. |
| m_foregroundLayer->setPosition(IntPoint(0, 0)); |
| m_foregroundLayer->setSize(newSize); |
| m_foregroundLayer->setOffsetFromRenderer(m_graphicsLayer->offsetFromRenderer()); |
| } |
| |
| m_graphicsLayer->setContentsRect(contentsBox()); |
| if (!m_hasDirectlyCompositedContent) |
| m_graphicsLayer->setDrawsContent(!isSimpleContainerCompositingLayer() && !paintingGoesToWindow() && !m_artificiallyInflatedBounds); |
| } |
| |
| 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); |
| } |
| |
| if (m_clippingLayer) { |
| m_clippingLayer->removeFromParent(); |
| m_graphicsLayer->addChild(m_clippingLayer); |
| } |
| } |
| |
| // Return true if the layers changed. |
| bool RenderLayerBacking::updateClippingLayers(bool needsAncestorClip, bool needsDescendantClip) |
| { |
| bool layersChanged = false; |
| |
| if (needsAncestorClip) { |
| if (!m_ancestorClippingLayer) { |
| m_ancestorClippingLayer = GraphicsLayer::createGraphicsLayer(this); |
| #ifndef NDEBUG |
| m_ancestorClippingLayer->setName("Ancestor clipping Layer"); |
| #endif |
| m_ancestorClippingLayer->setMasksToBounds(true); |
| layersChanged = true; |
| } |
| } else if (m_ancestorClippingLayer) { |
| m_ancestorClippingLayer->removeFromParent(); |
| delete m_ancestorClippingLayer; |
| m_ancestorClippingLayer = 0; |
| layersChanged = true; |
| } |
| |
| if (needsDescendantClip) { |
| if (!m_clippingLayer) { |
| m_clippingLayer = GraphicsLayer::createGraphicsLayer(0); |
| #ifndef NDEBUG |
| m_clippingLayer->setName("Child clipping Layer"); |
| #endif |
| m_clippingLayer->setMasksToBounds(true); |
| layersChanged = true; |
| } |
| } else if (m_clippingLayer) { |
| m_clippingLayer->removeFromParent(); |
| delete m_clippingLayer; |
| m_clippingLayer = 0; |
| layersChanged = true; |
| } |
| |
| if (layersChanged) |
| updateInternalHierarchy(); |
| |
| return layersChanged; |
| } |
| |
| bool RenderLayerBacking::updateForegroundLayer(bool needsForegroundLayer) |
| { |
| bool layerChanged = false; |
| if (needsForegroundLayer) { |
| if (!m_foregroundLayer) { |
| m_foregroundLayer = GraphicsLayer::createGraphicsLayer(this); |
| #ifndef NDEBUG |
| m_foregroundLayer->setName("Contents"); |
| #endif |
| m_foregroundLayer->setDrawsContent(true); |
| m_foregroundLayer->setDrawingPhase(GraphicsLayerPaintForegroundMask); |
| m_graphicsLayer->setDrawingPhase(GraphicsLayerPaintBackgroundMask); |
| layerChanged = true; |
| } |
| } else if (m_foregroundLayer) { |
| m_foregroundLayer->removeFromParent(); |
| delete m_foregroundLayer; |
| m_foregroundLayer = 0; |
| m_graphicsLayer->setDrawingPhase(GraphicsLayerPaintAllMask); |
| layerChanged = true; |
| } |
| return layerChanged; |
| } |
| |
| 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 hasBoxDecorations(const RenderStyle* style) |
| { |
| return hasBorderOutlineOrShadow(style) || style->hasBackground(); |
| } |
| |
| static bool hasBoxDecorationsWithBackgroundImage(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; |
| |
| RenderStyle* style = htmlObject->style(); |
| if (style->hasBackground()) |
| return true; |
| |
| RenderObject* bodyObject = htmlObject->firstChild(); |
| if (!bodyObject) |
| return false; |
| |
| style = bodyObject->style(); |
| return style->hasBackground(); |
| } |
| |
| return renderer()->style()->hasBackground(); |
| } |
| |
| const Color& RenderLayerBacking::rendererBackgroundColor() const |
| { |
| // FIXME: share more code here |
| if (renderer()->node() && renderer()->node()->isDocumentNode()) { |
| RenderObject* htmlObject = renderer()->firstChild(); |
| RenderStyle* style = htmlObject->style(); |
| if (style->hasBackground()) |
| return style->backgroundColor(); |
| |
| RenderObject* bodyObject = htmlObject->firstChild(); |
| style = bodyObject->style(); |
| return style->backgroundColor(); |
| } |
| |
| return renderer()->style()->backgroundColor(); |
| } |
| |
| // 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 (hasBoxDecorations(style)) |
| 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 (hasBoxDecorationsWithBackgroundImage(style)) |
| return false; |
| |
| // Now look at the body's renderer. |
| HTMLElement* body = renderObject->document()->body(); |
| RenderObject* bodyObject = (body && body->hasLocalName(HTMLNames::bodyTag)) ? body->renderer() : 0; |
| if (!bodyObject) |
| return false; |
| |
| style = bodyObject->style(); |
| |
| if (hasBoxDecorationsWithBackgroundImage(style)) |
| return false; |
| |
| // Ceck to see if all the body's children are compositing layers. |
| if (hasNonCompositingContent()) |
| return false; |
| |
| return true; |
| } |
| |
| // Check to see if all the renderer's children are compositing layers. |
| if (hasNonCompositingContent()) |
| return false; |
| |
| return true; |
| } |
| |
| bool RenderLayerBacking::hasNonCompositingContent() const |
| { |
| // Conservative test for having no rendered children. |
| |
| // 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; |
| } |
| } |
| |
| // FIXME: test for overflow controls. |
| 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; |
| } |
| |
| // A layer can use direct compositing if the render layer's object is a replaced object and has no children. |
| // This allows the GraphicsLayer to display the RenderLayer contents directly; it's used for images. |
| bool RenderLayerBacking::canUseDirectCompositing() const |
| { |
| RenderObject* renderObject = renderer(); |
| |
| // Reject anything that isn't an image |
| if (!renderObject->isImage() && !renderObject->isVideo()) |
| return false; |
| |
| if (renderObject->hasMask() || renderObject->hasReflection()) |
| return false; |
| |
| // Video can use an inner layer even if it has box decorations; we draw those into another layer. |
| if (renderObject->isVideo()) |
| return true; |
| |
| // Reject anything that would require the image to be drawn via the GraphicsContext, |
| // like border, shadows etc. Solid background color is OK. |
| return !hasBoxDecorationsWithBackgroundImage(renderObject->style()); |
| } |
| |
| void RenderLayerBacking::rendererContentChanged() |
| { |
| if (canUseDirectCompositing() && renderer()->isImage()) |
| updateImageContents(); |
| } |
| |
| void RenderLayerBacking::updateImageContents() |
| { |
| ASSERT(renderer()->isImage()); |
| RenderImage* imageRenderer = static_cast<RenderImage*>(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 = static_cast<RenderVideo*>(renderer()); |
| contentsRect = videoRenderer->videoBox(); |
| } else |
| #endif |
| contentsRect = toRenderBox(renderer())->contentBoxRect(); |
| |
| IntSize contentOffset = contentOffsetInCompostingLayer(); |
| contentsRect.move(contentOffset); |
| return contentsRect; |
| } |
| |
| // Map the given point from coordinates in the GraphicsLayer to RenderLayer coordinates. |
| FloatPoint RenderLayerBacking::graphicsLayerToContentsCoordinates(const GraphicsLayer* graphicsLayer, const FloatPoint& point) |
| { |
| return point + FloatSize(graphicsLayer->offsetFromRenderer()); |
| } |
| |
| // Map the given point from coordinates in the RenderLayer to GraphicsLayer coordinates. |
| FloatPoint RenderLayerBacking::contentsToGraphicsLayerCoordinates(const GraphicsLayer* graphicsLayer, const FloatPoint& point) |
| { |
| return point - FloatSize(graphicsLayer->offsetFromRenderer()); |
| } |
| |
| bool RenderLayerBacking::paintingGoesToWindow() const |
| { |
| return m_owningLayer->isRootLayer(); |
| } |
| |
| void RenderLayerBacking::setContentsNeedDisplay() |
| { |
| if (m_graphicsLayer && m_graphicsLayer->drawsContent()) |
| m_graphicsLayer->setNeedsDisplay(); |
| |
| if (m_foregroundLayer && m_foregroundLayer->drawsContent()) |
| m_foregroundLayer->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()) { |
| FloatPoint dirtyOrigin = contentsToGraphicsLayerCoordinates(m_graphicsLayer, FloatPoint(r.x(), r.y())); |
| FloatRect dirtyRect(dirtyOrigin, r.size()); |
| FloatRect bounds(FloatPoint(), m_graphicsLayer->size()); |
| if (bounds.intersects(dirtyRect)) |
| m_graphicsLayer->setNeedsDisplayInRect(dirtyRect); |
| } |
| |
| if (m_foregroundLayer && m_foregroundLayer->drawsContent()) { |
| // FIXME: do incremental repaint |
| m_foregroundLayer->setNeedsDisplay(); |
| } |
| } |
| |
| 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 |
| PaintRestriction paintRestriction, GraphicsLayerPaintingPhase paintingPhase, |
| RenderObject* paintingRoot) |
| { |
| if (paintingGoesToWindow()) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| m_owningLayer->updateLayerListsIfNeeded(); |
| |
| // Paint the reflection first if we have one. |
| if (m_owningLayer->hasReflection()) { |
| // Mark that we are now inside replica painting. |
| m_owningLayer->setPaintingInsideReflection(true); |
| m_owningLayer->reflectionLayer()->paintLayer(rootLayer, context, paintDirtyRect, paintRestriction, paintingRoot, 0, RenderLayer::PaintLayerPaintingReflection); |
| m_owningLayer->setPaintingInsideReflection(false); |
| } |
| |
| // 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->isSelfPaintingLayer(); |
| |
| if (shouldPaint && (paintingPhase & GraphicsLayerPaintBackgroundMask)) { |
| // If this is the root then we need to send in a bigger bounding box |
| // because we'll be painting the background as well (see RenderBox::paintRootBoxDecorations()). |
| IntRect paintBox = clipRectToApply; |
| |
| // FIXME: do we need this code? |
| if (renderer()->node() && renderer()->node()->isDocumentNode() && renderer()->document()->isHTMLDocument()) { |
| RenderBox* box = toRenderBox(renderer()); |
| int w = box->width(); |
| int h = box->height(); |
| |
| int rw; |
| int rh; |
| if (box->view()->frameView()) { |
| rw = box->view()->frameView()->contentsWidth(); |
| rh = box->view()->frameView()->contentsHeight(); |
| } else { |
| rw = box->view()->width(); |
| rh = box->view()->height(); |
| } |
| |
| int bx = tx - box->marginLeft(); |
| int by = ty - box->marginTop(); |
| int bw = max(w + box->marginLeft() + box->marginRight() + box->borderLeft() + box->borderRight(), rw); |
| int bh = max(h + box->marginTop() + box->marginBottom() + box->borderTop() + box->borderBottom(), rh); |
| paintBox = IntRect(bx, by, bw, bh); |
| } |
| |
| // Paint our background first, before painting any child layers. |
| // Establish the clip used to paint our background. |
| setClip(context, paintDirtyRect, damageRect); |
| |
| RenderObject::PaintInfo info(context, paintBox, PaintPhaseBlockBackground, false, paintingRootForRenderer, 0); |
| 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 (shouldPaint && (paintingPhase & GraphicsLayerPaintForegroundMask)) { |
| // Now walk the sorted list of children with negative z-indices. Only RenderLayers without compositing layers will paint. |
| // FIXME: should these be painted as background? |
| Vector<RenderLayer*>* negZOrderList = m_owningLayer->negZOrderList(); |
| if (negZOrderList) { |
| for (Vector<RenderLayer*>::iterator it = negZOrderList->begin(); it != negZOrderList->end(); ++it) |
| it[0]->paintLayer(rootLayer, context, paintDirtyRect, paintRestriction, paintingRoot); |
| } |
| |
| bool forceBlackText = paintRestriction == PaintRestrictionSelectionOnlyBlackText; |
| bool selectionOnly = paintRestriction == PaintRestrictionSelectionOnly || paintRestriction == PaintRestrictionSelectionOnlyBlackText; |
| |
| // Set up the clip used when painting our children. |
| setClip(context, paintDirtyRect, clipRectToApply); |
| RenderObject::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 (!outlineRect.isEmpty()) { |
| // Paint our own outline |
| RenderObject::PaintInfo paintInfo(context, outlineRect, PaintPhaseSelfOutline, false, paintingRootForRenderer, 0); |
| setClip(context, paintDirtyRect, outlineRect); |
| renderer()->paint(paintInfo, tx, ty); |
| restoreClip(context, paintDirtyRect, outlineRect); |
| } |
| |
| // Paint any child layers that have overflow. |
| Vector<RenderLayer*>* normalFlowList = m_owningLayer->normalFlowList(); |
| if (normalFlowList) { |
| for (Vector<RenderLayer*>::iterator it = normalFlowList->begin(); it != normalFlowList->end(); ++it) |
| it[0]->paintLayer(rootLayer, context, paintDirtyRect, paintRestriction, paintingRoot); |
| } |
| |
| // Now walk the sorted list of children with positive z-indices. |
| Vector<RenderLayer*>* posZOrderList = m_owningLayer->posZOrderList(); |
| if (posZOrderList) { |
| for (Vector<RenderLayer*>::iterator it = posZOrderList->begin(); it != posZOrderList->end(); ++it) |
| it[0]->paintLayer(rootLayer, context, paintDirtyRect, paintRestriction, paintingRoot); |
| } |
| |
| if (renderer()->hasMask() && !selectionOnly && !damageRect.isEmpty()) { |
| setClip(context, paintDirtyRect, damageRect); |
| |
| // Paint the mask. |
| RenderObject::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); |
| } |
| |
| // Up-call from compositing layer drawing callback. |
| void RenderLayerBacking::paintContents(const GraphicsLayer*, GraphicsContext& context, GraphicsLayerPaintingPhase drawingPhase, const IntRect& clip) |
| { |
| // We have to use the same root as for hit testing, because both methods |
| // can compute and cache clipRects. |
| IntRect enclosingBBox = compositedBounds(); |
| |
| IntRect clipRect(clip); |
| |
| // Set up the coordinate space to be in the layer's rendering coordinates. |
| context.translate(-enclosingBBox.x(), -enclosingBBox.y()); |
| |
| // Offset the clip. |
| clipRect.move(enclosingBBox.x(), enclosingBBox.y()); |
| |
| // The dirtyRect is in the coords of the painting root. |
| IntRect dirtyRect = enclosingBBox; |
| dirtyRect.intersect(clipRect); |
| |
| paintIntoLayer(m_owningLayer, &context, dirtyRect, PaintRestrictionNone, drawingPhase, renderer()); |
| } |
| |
| bool RenderLayerBacking::startAnimation(double beginTime, const Animation* anim, const KeyframeList& keyframes) |
| { |
| bool hasOpacity = keyframes.containsProperty(CSSPropertyOpacity); |
| bool hasTransform = keyframes.containsProperty(CSSPropertyWebkitTransform); |
| |
| if (!hasOpacity && !hasTransform) |
| return false; |
| |
| KeyframeValueList transformVector(AnimatedPropertyWebkitTransform); |
| KeyframeValueList opacityVector(AnimatedPropertyOpacity); |
| |
| for (Vector<KeyframeValue>::const_iterator it = keyframes.beginKeyframes(); it != keyframes.endKeyframes(); ++it) { |
| const RenderStyle* keyframeStyle = it->style(); |
| float key = it->key(); |
| |
| if (!keyframeStyle) |
| continue; |
| |
| // get timing function |
| const TimingFunction* tf = keyframeStyle->hasAnimations() ? &((*keyframeStyle->animations()).animation(0)->timingFunction()) : 0; |
| |
| if (hasTransform) |
| transformVector.insert(new TransformAnimationValue(key, &(keyframeStyle->transform()), tf)); |
| |
| if (hasOpacity) |
| opacityVector.insert(new FloatAnimationValue(key, keyframeStyle->opacity(), tf)); |
| } |
| |
| bool didAnimateTransform = !hasTransform; |
| bool didAnimateOpacity = !hasOpacity; |
| |
| if (hasTransform && m_graphicsLayer->addAnimation(transformVector, toRenderBox(renderer())->borderBoxRect().size(), anim, keyframes.animationName(), beginTime)) |
| didAnimateTransform = true; |
| |
| if (hasOpacity && m_graphicsLayer->addAnimation(opacityVector, IntSize(), anim, keyframes.animationName(), beginTime)) |
| didAnimateOpacity = true; |
| |
| bool runningAcceleratedAnimation = didAnimateTransform && didAnimateOpacity; |
| if (runningAcceleratedAnimation) |
| compositor()->didStartAcceleratedAnimation(); |
| |
| return runningAcceleratedAnimation; |
| } |
| |
| bool RenderLayerBacking::startTransition(double beginTime, int property, const RenderStyle* fromStyle, const RenderStyle* toStyle) |
| { |
| bool didAnimate = 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()))); |
| if (m_graphicsLayer->addAnimation(opacityVector, toRenderBox(renderer())->borderBoxRect().size(), opacityAnim, String(), beginTime)) |
| didAnimate = 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, String(), beginTime)) |
| didAnimate = true; |
| } |
| } |
| |
| if (didAnimate) |
| compositor()->didStartAcceleratedAnimation(); |
| |
| return didAnimate; |
| } |
| |
| void RenderLayerBacking::notifyAnimationStarted(const GraphicsLayer*, double time) |
| { |
| renderer()->animation()->notifyAnimationStarted(renderer(), time); |
| } |
| |
| void RenderLayerBacking::notifySyncRequired(const GraphicsLayer*) |
| { |
| if (!renderer()->documentBeingDestroyed()) |
| compositor()->scheduleSync(); |
| } |
| |
| void RenderLayerBacking::animationFinished(const String& animationName) |
| { |
| m_graphicsLayer->removeAnimationsForKeyframes(animationName); |
| } |
| |
| void RenderLayerBacking::animationPaused(const String& animationName) |
| { |
| m_graphicsLayer->pauseAnimation(animationName); |
| } |
| |
| void RenderLayerBacking::transitionFinished(int property) |
| { |
| AnimatedPropertyID animatedProperty = cssToGraphicsLayerProperty(property); |
| if (animatedProperty != AnimatedPropertyInvalid) |
| m_graphicsLayer->removeAnimationsForProperty(animatedProperty); |
| } |
| |
| void RenderLayerBacking::suspendAnimations() |
| { |
| m_graphicsLayer->suspendAnimations(); |
| } |
| |
| 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; |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(ACCELERATED_COMPOSITING) |
