RenderLayerBacking.cpp [plain text]
#include "config.h"
#if USE(ACCELERATED_COMPOSITING)
#include "AnimationController.h"
#if ENABLE(3D_CANVAS)
#include "WebGLRenderingContext.h"
#endif
#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 "InspectorTimelineAgent.h"
#include "KeyframeList.h"
#include "PluginWidget.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"
#include "RenderLayerBacking.h"
using namespace std;
namespace WebCore {
using namespace HTMLNames;
static bool hasBorderOutlineOrShadow(const RenderStyle*);
static bool hasBoxDecorationsOrBackground(const RenderObject*);
static bool hasBoxDecorationsOrBackgroundImage(const RenderStyle*);
static inline bool is3DCanvas(RenderObject* renderer)
{
#if ENABLE(3D_CANVAS)
if (renderer->isCanvas())
return static_cast<HTMLCanvasElement*>(renderer->node())->is3D();
#else
UNUSED_PARAM(renderer);
#endif
return false;
}
RenderLayerBacking::RenderLayerBacking(RenderLayer* layer)
: m_owningLayer(layer)
, m_artificiallyInflatedBounds(false)
{
createGraphicsLayer();
}
RenderLayerBacking::~RenderLayerBacking()
{
updateClippingLayers(false, false);
updateForegroundLayer(false);
updateMaskLayer(false);
destroyGraphicsLayer();
}
void RenderLayerBacking::createGraphicsLayer()
{
m_graphicsLayer = GraphicsLayer::create(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())->getIDAttribute());
else
m_graphicsLayer->setName(renderer()->renderName());
}
} else if (m_owningLayer->isReflection())
m_graphicsLayer->setName("Reflection");
else
m_graphicsLayer->setName("Anonymous Node");
#endif // NDEBUG
if (Frame* frame = renderer()->document()->frame())
m_graphicsLayer->setContentsScale(frame->contentsScale());
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)
{
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());
}
static bool layerOrAncestorIsTransformed(RenderLayer* layer)
{
for (RenderLayer* curr = layer; curr; curr = curr->parent()) {
if (curr->hasTransform())
return true;
}
return false;
}
void RenderLayerBacking::updateCompositedBounds()
{
IntRect layerBounds = compositor()->calculateCompositedBounds(m_owningLayer, m_owningLayer);
if (compositor()->compositingConsultsOverlap() && !layerOrAncestorIsTransformed(m_owningLayer)) {
RenderView* view = m_owningLayer->renderer()->view();
RenderLayer* rootLayer = view->layer();
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 (layerBounds.isEmpty() && hasNonZeroTransformOrigin(renderer())) {
layerBounds.setWidth(1);
layerBounds.setHeight(1);
m_artificiallyInflatedBounds = true;
} else
m_artificiallyInflatedBounds = false;
setCompositedBounds(layerBounds);
}
void RenderLayerBacking::updateAfterWidgetResize()
{
if (renderer()->isRenderIFrame()) {
if (RenderLayerCompositor* innerCompositor = RenderLayerCompositor::iframeContentsCompositor(toRenderIFrame(renderer())))
innerCompositor->updateContentLayerOffset(contentsBox().location());
}
}
void RenderLayerBacking::updateAfterLayout(UpdateDepth updateDepth, bool isUpdateRoot)
{
RenderLayerCompositor* layerCompositor = compositor();
if (!layerCompositor->compositingLayersNeedRebuild()) {
updateCompositedBounds();
layerCompositor->updateCompositingDescendantGeometry(m_owningLayer, m_owningLayer, updateDepth);
if (isUpdateRoot) {
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;
if (updateMaskLayer(m_owningLayer->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()) {
PluginWidget* pluginWidget = static_cast<PluginWidget*>(toRenderEmbeddedObject(renderer())->widget());
if (pluginWidget && !m_graphicsLayer->contentsLayerForMedia())
pluginWidget->attachPluginLayer();
}
#if ENABLE(VIDEO)
else if (renderer()->isVideo()) {
HTMLMediaElement* mediaElement = static_cast<HTMLMediaElement*>(renderer()->node());
m_graphicsLayer->setContentsToMedia(mediaElement->platformLayer());
}
#endif
#if ENABLE(3D_CANVAS)
else if (is3DCanvas(renderer())) {
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(renderer()->node());
WebGLRenderingContext* context = static_cast<WebGLRenderingContext*>(canvas->renderingContext());
if (context->graphicsContext3D()->platformLayer())
m_graphicsLayer->setContentsToWebGL(context->graphicsContext3D()->platformLayer());
}
#endif
if (renderer()->isRenderIFrame())
layerConfigChanged = RenderLayerCompositor::parentIFrameContentLayers(toRenderIFrame(renderer()));
return layerConfigChanged;
}
void RenderLayerBacking::updateGraphicsLayerGeometry()
{
if (m_owningLayer->isStackingContext() && m_owningLayer->m_zOrderListsDirty)
return;
if (!renderer()->animation()->isAnimatingPropertyOnRenderer(renderer(), CSSPropertyWebkitTransform))
updateLayerTransform(renderer()->style());
if (!renderer()->animation()->isAnimatingPropertyOnRenderer(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();
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()) {
graphicsLayerParentLocation = toRenderBox(compAncestor->renderer())->overflowClipRect(0, 0).location();
} else
graphicsLayerParentLocation = ancestorCompositingBounds.location();
if (compAncestor && m_ancestorClippingLayer) {
IntRect parentClipRect = m_owningLayer->backgroundClipRect(compAncestor, true);
m_ancestorClippingLayer->setPosition(FloatPoint() + (parentClipRect.location() - graphicsLayerParentLocation));
m_ancestorClippingLayer->setSize(parentClipRect.size());
IntSize rendererOffset(parentClipRect.location().x() - deltaX, parentClipRect.location().y() - deltaY);
m_ancestorClippingLayer->setOffsetFromRenderer(rendererOffset);
graphicsLayerParentLocation = parentClipRect.location();
}
m_graphicsLayer->setPosition(FloatPoint() + (relativeCompositingBounds.location() - graphicsLayerParentLocation));
IntSize oldOffsetFromRenderer = m_graphicsLayer->offsetFromRenderer();
m_graphicsLayer->setOffsetFromRenderer(localCompositingBounds.location() - IntPoint());
if (oldOffsetFromRenderer != m_graphicsLayer->offsetFromRenderer())
m_graphicsLayer->setNeedsDisplay();
FloatSize oldSize = m_graphicsLayer->size();
FloatSize newSize = relativeCompositingBounds.size();
if (oldSize != newSize) {
m_graphicsLayer->setSize(newSize);
m_graphicsLayer->setNeedsDisplay();
}
IntRect clippingBox;
if (m_clippingLayer) {
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_maskLayer) {
m_maskLayer->setSize(m_graphicsLayer->size());
m_maskLayer->setPosition(FloatPoint());
}
if (m_owningLayer->hasTransform()) {
const IntRect borderBox = toRenderBox(renderer())->borderBoxRect();
IntRect layerBounds = IntRect(deltaX, deltaY, borderBox.width(), borderBox.height());
FloatPoint3D transformOrigin = computeTransformOrigin(borderBox);
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) {
foregroundPosition = FloatPoint() + (localCompositingBounds.location() - clippingBox.location());
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();
FloatRect layerBounds = compositedBounds();
FloatRect reflectionLayerBounds = reflectionBacking->compositedBounds();
reflectionBacking->graphicsLayer()->setReplicatedLayerPosition(FloatPoint() + (layerBounds.location() - reflectionLayerBounds.location()));
}
m_graphicsLayer->setContentsRect(contentsBox());
updateDrawsContent();
updateAfterWidgetResize();
}
void RenderLayerBacking::updateInternalHierarchy()
{
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());
}
}
void RenderLayerBacking::updateDrawsContent()
{
m_graphicsLayer->setDrawsContent(containsPaintedContent());
}
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;
}
if (layersChanged)
updateInternalHierarchy();
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("Foreground");
#endif
m_foregroundLayer->setDrawsContent(true);
m_foregroundLayer->setPaintingPhase(GraphicsLayerPaintForeground);
if (Frame* frame = renderer()->document()->frame())
m_foregroundLayer->setContentsScale(frame->contentsScale());
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->contentsScale());
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()) {
if (!curr->isStackingContext())
continue;
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
{
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
{
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);
}
bool RenderLayerBacking::isSimpleContainerCompositingLayer() const
{
RenderObject* renderObject = renderer();
if (renderObject->isReplaced() || renderObject->hasMask()) return false;
RenderStyle* style = renderObject->style();
if (hasBoxDecorationsOrBackground(renderObject))
return false;
if (!renderObject->firstChild())
return true;
if (renderObject->node() && renderObject->node()->isDocumentNode()) {
RenderObject* rootObject = renderObject->document()->documentElement()->renderer();
if (!rootObject)
return false;
style = rootObject->style();
if (hasBoxDecorationsOrBackgroundImage(style))
return false;
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;
if (hasNonCompositingContent())
return false;
return true;
}
if (hasNonCompositingContent())
return false;
return true;
}
bool RenderLayerBacking::hasNonCompositingContent() const
{
if (m_owningLayer->hasOverflowControls())
return true;
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()) {
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;
if (renderer()->isVideo() || is3DCanvas(renderer()))
return hasBoxDecorationsOrBackground(renderer());
return true;
}
bool RenderLayerBacking::isDirectlyCompositedImage() const
{
RenderObject* renderObject = renderer();
return renderObject->isImage() && !hasBoxDecorationsOrBackground(renderObject) && !renderObject->hasClip();
}
void RenderLayerBacking::rendererContentChanged()
{
if (isDirectlyCompositedImage()) {
updateImageContents();
return;
}
#if ENABLE(3D_CANVAS)
if (is3DCanvas(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;
if (!cachedImage->isLoaded())
return;
m_graphicsLayer->setContentsToImage(image);
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;
}
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;
}
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);
}
FloatPoint RenderLayerBacking::graphicsLayerToContentsCoordinates(const GraphicsLayer* graphicsLayer, const FloatPoint& point)
{
return point + FloatSize(graphicsLayer->offsetFromRenderer());
}
FloatPoint RenderLayerBacking::contentsToGraphicsLayerCoordinates(const GraphicsLayer* graphicsLayer, const FloatPoint& point)
{
return point - FloatSize(graphicsLayer->offsetFromRenderer());
}
bool RenderLayerBacking::paintingGoesToWindow() const
{
if (m_owningLayer->isRootLayer())
return compositor()->rootLayerAttachment() == RenderLayerCompositor::RootLayerAttachedViaChromeClient;
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();
}
void RenderLayerBacking::setContentsNeedDisplayInRect(const IntRect& r)
{
if (m_graphicsLayer && m_graphicsLayer->drawsContent()) {
FloatPoint dirtyOrigin = contentsToGraphicsLayerCoordinates(m_graphicsLayer.get(), 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()) {
m_foregroundLayer->setNeedsDisplay();
}
if (m_maskLayer && m_maskLayer->drawsContent()) {
m_maskLayer->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();
}
void RenderLayerBacking::paintIntoLayer(RenderLayer* rootLayer, GraphicsContext* context,
const IntRect& paintDirtyRect, PaintBehavior paintBehavior, GraphicsLayerPaintingPhase paintingPhase,
RenderObject* paintingRoot)
{
if (paintingGoesToWindow()) {
ASSERT_NOT_REACHED();
return;
}
m_owningLayer->updateLayerListsIfNeeded();
IntRect layerBounds, damageRect, clipRectToApply, outlineRect;
m_owningLayer->calculateRects(rootLayer, paintDirtyRect, layerBounds, damageRect, clipRectToApply, outlineRect);
int x = layerBounds.x(); int y = layerBounds.y();
int tx = x - m_owningLayer->renderBoxX();
int ty = y - m_owningLayer->renderBoxY();
RenderObject *paintingRootForRenderer = 0;
if (paintingRoot && !renderer()->isDescendantOf(paintingRoot))
paintingRootForRenderer = paintingRoot;
bool shouldPaint = (m_owningLayer->hasVisibleContent() || m_owningLayer->hasVisibleDescendant()) && m_owningLayer->isSelfPaintingLayer();
if (shouldPaint && (paintingPhase & GraphicsLayerPaintBackground)) {
IntRect paintBox = clipRectToApply;
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 (FrameView* frameView = box->view()->frameView()) {
rw = frameView->contentsWidth();
rh = 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);
}
setClip(context, paintDirtyRect, damageRect);
RenderObject::PaintInfo info(context, paintBox, PaintPhaseBlockBackground, false, paintingRootForRenderer, 0);
renderer()->paint(info, tx, ty);
m_owningLayer->paintOverflowControls(context, x, y, damageRect);
restoreClip(context, paintDirtyRect, damageRect);
}
bool forceBlackText = paintBehavior & PaintBehaviorForceBlackText;
bool selectionOnly = paintBehavior & PaintBehaviorSelectionOnly;
if (shouldPaint && (paintingPhase & GraphicsLayerPaintForeground)) {
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, paintBehavior, paintingRoot);
}
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);
}
restoreClip(context, paintDirtyRect, clipRectToApply);
if (!outlineRect.isEmpty()) {
RenderObject::PaintInfo paintInfo(context, outlineRect, PaintPhaseSelfOutline, false, paintingRootForRenderer, 0);
setClip(context, paintDirtyRect, outlineRect);
renderer()->paint(paintInfo, tx, ty);
restoreClip(context, paintDirtyRect, outlineRect);
}
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, paintBehavior, paintingRoot);
}
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, paintBehavior, paintingRoot);
}
}
if (shouldPaint && (paintingPhase & GraphicsLayerPaintMask)) {
if (renderer()->hasMask() && !selectionOnly && !damageRect.isEmpty()) {
setClip(context, paintDirtyRect, damageRect);
RenderObject::PaintInfo paintInfo(context, damageRect, PaintPhaseMask, false, paintingRootForRenderer, 0);
renderer()->paint(paintInfo, tx, ty);
restoreClip(context, paintDirtyRect, damageRect);
}
}
ASSERT(!m_owningLayer->m_usedTransparency);
}
#if ENABLE(INSPECTOR)
static InspectorTimelineAgent* inspectorTimelineAgent(RenderObject* renderer)
{
Frame* frame = renderer->document()->frame();
if (!frame)
return 0;
Page* page = frame->page();
if (!page)
return 0;
return page->inspectorTimelineAgent();
}
#endif
void RenderLayerBacking::paintContents(const GraphicsLayer*, GraphicsContext& context, GraphicsLayerPaintingPhase paintingPhase, const IntRect& clip)
{
#if ENABLE(INSPECTOR)
if (InspectorTimelineAgent* timelineAgent = inspectorTimelineAgent(m_owningLayer->renderer()))
timelineAgent->willPaint(clip);
#endif
IntRect enclosingBBox = compositedBounds();
IntRect clipRect(clip);
context.translate(-enclosingBBox.x(), -enclosingBBox.y());
clipRect.move(enclosingBBox.x(), enclosingBBox.y());
IntRect dirtyRect = enclosingBBox;
dirtyRect.intersect(clipRect);
paintIntoLayer(m_owningLayer, &context, dirtyRect, PaintBehaviorNormal, paintingPhase, renderer());
#if ENABLE(INSPECTOR)
if (InspectorTimelineAgent* timelineAgent = inspectorTimelineAgent(m_owningLayer->renderer()))
timelineAgent->didPaint();
#endif
}
bool RenderLayerBacking::showDebugBorders() const
{
return compositor() ? compositor()->showDebugBorders() : false;
}
bool RenderLayerBacking::showRepaintCounter() const
{
return compositor() ? compositor()->showRepaintCounter() : 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);
for (Vector<KeyframeValue>::const_iterator it = keyframes.beginKeyframes(); it != keyframes.endKeyframes(); ++it) {
const RenderStyle* keyframeStyle = it->style();
float key = it->key();
if (!keyframeStyle)
continue;
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(), timeOffset))
didAnimateTransform = true;
if (hasOpacity && m_graphicsLayer->addAnimation(opacityVector, IntSize(), anim, keyframes.animationName(), timeOffset))
didAnimateOpacity = true;
bool runningAcceleratedAnimation = didAnimateTransform && didAnimateOpacity;
if (runningAcceleratedAnimation)
compositor()->didStartAcceleratedAnimation();
return runningAcceleratedAnimation;
}
bool RenderLayerBacking::startTransition(double timeOffset, 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, IntSize(), opacityAnim, String(), timeOffset)) {
updateLayerOpacity(toStyle);
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(), timeOffset)) {
updateLayerTransform(toStyle);
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(double timeOffset, const String& animationName)
{
m_graphicsLayer->pauseAnimation(animationName, timeOffset);
}
void RenderLayerBacking::transitionFinished(int property)
{
AnimatedPropertyID animatedProperty = cssToGraphicsLayerProperty(property);
if (animatedProperty != AnimatedPropertyInvalid)
m_graphicsLayer->removeAnimationsForProperty(animatedProperty);
}
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;
}
return AnimatedPropertyInvalid;
}
}
#endif // USE(ACCELERATED_COMPOSITING)