GraphicsLayer* PaintLayerCompositor::fixedRootBackgroundLayer() const
{
// Get the fixed root background from the LayoutView layer's compositedLayerMapping.
PaintLayer* viewLayer = m_layoutView.layer();
if (!viewLayer)
return nullptr;
if (viewLayer->compositingState() == PaintsIntoOwnBacking && viewLayer->compositedLayerMapping()->backgroundLayerPaintsFixedRootBackground())
return viewLayer->compositedLayerMapping()->backgroundLayer();
return nullptr;
}
void CompositorAnimations::attachCompositedLayers(const Element& element, const Animation& animation)
{
ASSERT(element.layoutObject());
PaintLayer* layer = toLayoutBoxModelObject(element.layoutObject())->layer();
ASSERT(layer);
WebCompositorAnimationPlayer* compositorPlayer = animation.compositorPlayer();
ASSERT(compositorPlayer);
ASSERT(layer->compositedLayerMapping());
compositorPlayer->attachLayer(layer->compositedLayerMapping()->mainGraphicsLayer()->platformLayer());
}
TEST_F(CompositedLayerMappingTest, TallLayerWholeDocumentInterestRect)
{
setBodyInnerHTML("<div id='target' style='width: 200px; height: 10000px; will-change: transform'></div>");
document().settings()->setMainFrameClipsContent(false);
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer = toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(paintLayer->graphicsLayerBacking());
ASSERT_TRUE(paintLayer->compositedLayerMapping());
// recomputeInterestRect computes the interest rect; computeInterestRect applies the extra setting to paint everything.
EXPECT_RECT_EQ(IntRect(0, 0, 200, 4592), recomputeInterestRect(paintLayer->graphicsLayerBacking()));
EXPECT_RECT_EQ(IntRect(0, 0, 200, 10000), computeInterestRect(paintLayer->compositedLayerMapping(), paintLayer->graphicsLayerBacking(), IntRect()));
}
bool CompositorAnimations::startAnimationOnCompositor(const Element& element, int group, double startTime, double timeOffset, const Timing& timing, const Animation& animation, const EffectModel& effect, Vector<int>& startedAnimationIds, double animationPlaybackRate)
{
ASSERT(startedAnimationIds.isEmpty());
ASSERT(isCandidateForAnimationOnCompositor(timing, element, &animation, effect, animationPlaybackRate));
ASSERT(canStartAnimationOnCompositor(element));
const KeyframeEffectModelBase& keyframeEffect = toKeyframeEffectModelBase(effect);
PaintLayer* layer = toLayoutBoxModelObject(element.layoutObject())->layer();
ASSERT(layer);
Vector<OwnPtr<WebCompositorAnimation>> animations;
CompositorAnimationsImpl::getAnimationOnCompositor(timing, group, startTime, timeOffset, keyframeEffect, animations, animationPlaybackRate);
ASSERT(!animations.isEmpty());
for (auto& compositorAnimation : animations) {
int id = compositorAnimation->id();
if (RuntimeEnabledFeatures::compositorAnimationTimelinesEnabled()) {
WebCompositorAnimationPlayer* compositorPlayer = animation.compositorPlayer();
ASSERT(compositorPlayer);
compositorPlayer->addAnimation(compositorAnimation.leakPtr());
} else if (!layer->compositedLayerMapping()->mainGraphicsLayer()->addAnimation(compositorAnimation.release())) {
// FIXME: We should know ahead of time whether these animations can be started.
for (int startedAnimationId : startedAnimationIds)
cancelAnimationOnCompositor(element, animation, startedAnimationId);
startedAnimationIds.clear();
return false;
}
startedAnimationIds.append(id);
}
ASSERT(!startedAnimationIds.isEmpty());
return true;
}
void GraphicsLayerTreeBuilder::rebuild(PaintLayer& layer, AncestorInfo info)
{
// Make the layer compositing if necessary, and set up clipping and content layers.
// Note that we can only do work here that is independent of whether the descendant layers
// have been processed. computeCompositingRequirements() will already have done the paint invalidation if necessary.
layer.stackingNode()->updateLayerListsIfNeeded();
const bool hasCompositedLayerMapping = layer.hasCompositedLayerMapping();
CompositedLayerMapping* currentCompositedLayerMapping = layer.compositedLayerMapping();
// If this layer has a compositedLayerMapping, then that is where we place subsequent children GraphicsLayers.
// Otherwise children continue to append to the child list of the enclosing layer.
GraphicsLayerVector layerChildren;
AncestorInfo infoForChildren(info);
if (hasCompositedLayerMapping) {
infoForChildren.childLayersOfEnclosingCompositedLayer = &layerChildren;
infoForChildren.enclosingCompositedLayer = &layer;
}
#if ENABLE(ASSERT)
LayerListMutationDetector mutationChecker(layer.stackingNode());
#endif
if (layer.stackingNode()->isStackingContext()) {
PaintLayerStackingNodeIterator iterator(*layer.stackingNode(), NegativeZOrderChildren);
while (PaintLayerStackingNode* curNode = iterator.next())
rebuild(*curNode->layer(), infoForChildren);
// If a negative z-order child is compositing, we get a foreground layer which needs to get parented.
if (hasCompositedLayerMapping && currentCompositedLayerMapping->foregroundLayer())
infoForChildren.childLayersOfEnclosingCompositedLayer->append(currentCompositedLayerMapping->foregroundLayer());
}
PaintLayerStackingNodeIterator iterator(*layer.stackingNode(), NormalFlowChildren | PositiveZOrderChildren);
while (PaintLayerStackingNode* curNode = iterator.next())
rebuild(*curNode->layer(), infoForChildren);
if (hasCompositedLayerMapping) {
bool parented = false;
if (layer.layoutObject()->isLayoutPart())
parented = PaintLayerCompositor::attachFrameContentLayersToIframeLayer(toLayoutPart(layer.layoutObject()));
if (!parented)
currentCompositedLayerMapping->setSublayers(layerChildren);
if (shouldAppendLayer(layer))
info.childLayersOfEnclosingCompositedLayer->append(currentCompositedLayerMapping->childForSuperlayers());
}
if (layer.scrollParent()
&& layer.scrollParent()->hasCompositedLayerMapping()
&& layer.scrollParent()->compositedLayerMapping()->needsToReparentOverflowControls()
&& layer.scrollParent()->getScrollableArea()->topmostScrollChild() == &layer)
info.childLayersOfEnclosingCompositedLayer->append(layer.scrollParent()->compositedLayerMapping()->detachLayerForOverflowControls(*info.enclosingCompositedLayer));
}
static CompositedLayerMapping* mappingFromElement(Element* element) {
if (!element)
return nullptr;
LayoutObject* layoutObject = element->layoutObject();
if (!layoutObject || !layoutObject->isBoxModelObject())
return nullptr;
PaintLayer* layer = toLayoutBoxModelObject(layoutObject)->layer();
if (!layer)
return nullptr;
if (!layer->hasCompositedLayerMapping())
return nullptr;
return layer->compositedLayerMapping();
}
bool PaintLayerCompositor::attachFrameContentLayersToIframeLayer(LayoutPart* layoutObject)
{
PaintLayerCompositor* innerCompositor = frameContentsCompositor(layoutObject);
if (!innerCompositor || !innerCompositor->staleInCompositingMode() || innerCompositor->rootLayerAttachment() != RootLayerAttachedViaEnclosingFrame)
return false;
PaintLayer* layer = layoutObject->layer();
if (!layer->hasCompositedLayerMapping())
return false;
layer->compositedLayerMapping()->setSublayers(GraphicsLayerVector(1, innerCompositor->rootGraphicsLayer()));
return true;
}
static void paintLayers(PaintLayer& layer, SimDisplayItemList& displayList)
{
if (layer.isAllowedToQueryCompositingState() && layer.compositingState() == PaintsIntoOwnBacking) {
CompositedLayerMapping* mapping = layer.compositedLayerMapping();
GraphicsLayer* graphicsLayer = mapping->mainGraphicsLayer();
if (graphicsLayer->hasTrackedPaintInvalidations()) {
ContentLayerDelegate* delegate = graphicsLayer->contentLayerDelegateForTesting();
delegate->paintContents(&displayList, WebRect(0, 0, layer.size().width(), layer.size().height()));
graphicsLayer->resetTrackedPaintInvalidations();
}
}
for (PaintLayer* child = layer.firstChild(); child; child = child->nextSibling())
paintLayers(*child, displayList);
}
bool CompositorAnimations::canAttachCompositedLayers(const Element& element, const Animation& animation)
{
if (!RuntimeEnabledFeatures::compositorAnimationTimelinesEnabled())
return false;
if (!animation.compositorPlayer())
return false;
if (!element.layoutObject() || !element.layoutObject()->isBoxModelObject())
return false;
PaintLayer* layer = toLayoutBoxModelObject(element.layoutObject())->layer();
if (!layer || !layer->isAllowedToQueryCompositingState()
|| !layer->compositedLayerMapping()
|| !layer->compositedLayerMapping()->mainGraphicsLayer())
return false;
if (!layer->compositedLayerMapping()->mainGraphicsLayer()->platformLayer())
return false;
return true;
}
static WebLayer* webLayerFromElement(Element* element)
{
if (!element)
return 0;
LayoutObject* layoutObject = element->layoutObject();
if (!layoutObject || !layoutObject->isBoxModelObject())
return 0;
PaintLayer* layer = toLayoutBoxModelObject(layoutObject)->layer();
if (!layer)
return 0;
if (!layer->hasCompositedLayerMapping())
return 0;
CompositedLayerMapping* compositedLayerMapping = layer->compositedLayerMapping();
GraphicsLayer* graphicsLayer = compositedLayerMapping->mainGraphicsLayer();
if (!graphicsLayer)
return 0;
return graphicsLayer->platformLayer();
}
TEST_P(CompositedLayerMappingTest, VerticalRightLeftWritingModeDocument) {
setBodyInnerHTML(
"<style>html,body { margin: 0px } html { -webkit-writing-mode: "
"vertical-rl}</style> <div id='target' style='width: 10000px; height: "
"200px;'></div>");
document().view()->updateAllLifecyclePhases();
document().view()->layoutViewportScrollableArea()->setScrollOffset(
ScrollOffset(-5000, 0), ProgrammaticScroll);
document().view()->updateAllLifecyclePhases();
PaintLayer* paintLayer = document().layoutViewItem().layer();
ASSERT_TRUE(paintLayer->graphicsLayerBacking());
ASSERT_TRUE(paintLayer->compositedLayerMapping());
// A scroll by -5000px is equivalent to a scroll by (10000 - 5000 - 800)px =
// 4200px in non-RTL mode. Expanding the resulting rect by 4000px in each
// direction yields this result.
EXPECT_RECT_EQ(
IntRect(200, 0, 8800, 600),
recomputeInterestRect(paintLayer->graphicsLayerBackingForScrolling()));
}
bool PaintLayerCompositor::allocateOrClearCompositedLayerMapping(PaintLayer* layer, const CompositingStateTransitionType compositedLayerUpdate)
{
bool compositedLayerMappingChanged = false;
// FIXME: It would be nice to directly use the layer's compositing reason,
// but allocateOrClearCompositedLayerMapping also gets called without having updated compositing
// requirements fully.
switch (compositedLayerUpdate) {
case AllocateOwnCompositedLayerMapping:
ASSERT(!layer->hasCompositedLayerMapping());
setCompositingModeEnabled(true);
// If we need to issue paint invalidations, do so before allocating the compositedLayerMapping and clearing out the groupedMapping.
paintInvalidationOnCompositingChange(layer);
// If this layer was previously squashed, we need to remove its reference to a groupedMapping right away, so
// that computing paint invalidation rects will know the layer's correct compositingState.
// FIXME: do we need to also remove the layer from it's location in the squashing list of its groupedMapping?
// Need to create a test where a squashed layer pops into compositing. And also to cover all other
// sorts of compositingState transitions.
layer->setLostGroupedMapping(false);
layer->setGroupedMapping(nullptr, PaintLayer::InvalidateLayerAndRemoveFromMapping);
layer->ensureCompositedLayerMapping();
compositedLayerMappingChanged = true;
// At this time, the ScrollingCooridnator only supports the top-level frame.
if (layer->isRootLayer() && m_layoutView.frame()->isLocalRoot()) {
if (ScrollingCoordinator* scrollingCoordinator = this->scrollingCoordinator())
scrollingCoordinator->frameViewRootLayerDidChange(m_layoutView.frameView());
}
break;
case RemoveOwnCompositedLayerMapping:
// PutInSquashingLayer means you might have to remove the composited layer mapping first.
case PutInSquashingLayer:
if (layer->hasCompositedLayerMapping()) {
// If we're removing the compositedLayerMapping from a reflection, clear the source GraphicsLayer's pointer to
// its replica GraphicsLayer. In practice this should never happen because reflectee and reflection
// are both either composited, or not composited.
if (layer->isReflection()) {
PaintLayer* sourceLayer = toLayoutBoxModelObject(layer->layoutObject()->parent())->layer();
if (sourceLayer->hasCompositedLayerMapping()) {
ASSERT(sourceLayer->compositedLayerMapping()->mainGraphicsLayer()->replicaLayer() == layer->compositedLayerMapping()->mainGraphicsLayer());
sourceLayer->compositedLayerMapping()->mainGraphicsLayer()->setReplicatedByLayer(nullptr);
}
}
layer->clearCompositedLayerMapping();
compositedLayerMappingChanged = true;
}
break;
case RemoveFromSquashingLayer:
case NoCompositingStateChange:
// Do nothing.
break;
}
if (compositedLayerMappingChanged && layer->layoutObject()->isLayoutPart()) {
PaintLayerCompositor* innerCompositor = frameContentsCompositor(toLayoutPart(layer->layoutObject()));
if (innerCompositor && innerCompositor->staleInCompositingMode())
innerCompositor->updateRootLayerAttachment();
}
if (compositedLayerMappingChanged)
layer->clipper().clearClipRectsIncludingDescendants(PaintingClipRects);
// If a fixed position layer gained/lost a compositedLayerMapping or the reason not compositing it changed,
// the scrolling coordinator needs to recalculate whether it can do fast scrolling.
if (compositedLayerMappingChanged) {
if (ScrollingCoordinator* scrollingCoordinator = this->scrollingCoordinator())
scrollingCoordinator->frameViewFixedObjectsDidChange(m_layoutView.frameView());
}
return compositedLayerMappingChanged;
}