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/*
* 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 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"
#include "GraphicsLayer.h"
#include "FloatPoint.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "LayoutRect.h"
#include "RotateTransformOperation.h"
#include <wtf/HashMap.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/text/CString.h>
#include <wtf/text/StringBuilder.h>
#include <wtf/text/TextStream.h>
#include <wtf/text/WTFString.h>
#ifndef NDEBUG
#include <stdio.h>
#endif
namespace WebCore {
typedef HashMap<const GraphicsLayer*, Vector<FloatRect>> RepaintMap;
static RepaintMap& repaintRectMap()
{
static NeverDestroyed<RepaintMap> map;
return map;
}
void KeyframeValueList::insert(std::unique_ptr<const AnimationValue> value)
{
for (size_t i = 0; i < m_values.size(); ++i) {
const AnimationValue* curValue = m_values[i].get();
if (curValue->keyTime() == value->keyTime()) {
ASSERT_NOT_REACHED();
// insert after
m_values.insert(i + 1, WTFMove(value));
return;
}
if (curValue->keyTime() > value->keyTime()) {
// insert before
m_values.insert(i, WTFMove(value));
return;
}
}
m_values.append(WTFMove(value));
}
#if !USE(CA)
bool GraphicsLayer::supportsLayerType(Type type)
{
switch (type) {
case Type::Normal:
case Type::PageTiledBacking:
case Type::ScrollContainer:
case Type::ScrolledContents:
return true;
case Type::Shape:
return false;
}
ASSERT_NOT_REACHED();
return false;
}
bool GraphicsLayer::supportsBackgroundColorContent()
{
#if USE(TEXTURE_MAPPER)
return true;
#else
return false;
#endif
}
bool GraphicsLayer::supportsSubpixelAntialiasedLayerText()
{
return false;
}
#endif
#if !USE(COORDINATED_GRAPHICS)
bool GraphicsLayer::supportsContentsTiling()
{
// FIXME: Enable the feature on different ports.
return false;
}
#endif
// Singleton client used for layers on which clearClient has been called.
class EmptyGraphicsLayerClient final : public GraphicsLayerClient {
WTF_MAKE_FAST_ALLOCATED;
public:
static EmptyGraphicsLayerClient& singleton();
};
EmptyGraphicsLayerClient& EmptyGraphicsLayerClient::singleton()
{
static NeverDestroyed<EmptyGraphicsLayerClient> client;
return client;
}
GraphicsLayer::GraphicsLayer(Type type, GraphicsLayerClient& layerClient)
: m_client(&layerClient)
, m_type(type)
, m_beingDestroyed(false)
, m_contentsOpaque(false)
, m_supportsSubpixelAntialiasedText(false)
, m_preserves3D(false)
, m_backfaceVisibility(true)
, m_masksToBounds(false)
, m_drawsContent(false)
, m_contentsVisible(true)
, m_acceleratesDrawing(false)
, m_usesDisplayListDrawing(false)
, m_appliesPageScale(false)
, m_showDebugBorder(false)
, m_showRepaintCounter(false)
, m_isMaskLayer(false)
, m_isTrackingDisplayListReplay(false)
, m_userInteractionEnabled(true)
, m_canDetachBackingStore(true)
{
#ifndef NDEBUG
client().verifyNotPainting();
#endif
}
GraphicsLayer::~GraphicsLayer()
{
resetTrackedRepaints();
ASSERT(!m_parent); // willBeDestroyed should have been called already.
}
void GraphicsLayer::unparentAndClear(RefPtr<GraphicsLayer>& layer)
{
if (layer) {
layer->removeFromParent();
layer->clearClient();
layer = nullptr;
}
}
void GraphicsLayer::clear(RefPtr<GraphicsLayer>& layer)
{
if (layer) {
layer->clearClient();
layer = nullptr;
}
}
void GraphicsLayer::willBeDestroyed()
{
m_beingDestroyed = true;
#ifndef NDEBUG
client().verifyNotPainting();
#endif
if (m_replicaLayer)
m_replicaLayer->setReplicatedLayer(nullptr);
if (m_replicatedLayer)
m_replicatedLayer->setReplicatedByLayer(nullptr);
if (m_maskLayer) {
m_maskLayer->setParent(nullptr);
m_maskLayer->setIsMaskLayer(false);
}
removeAllChildren();
removeFromParent();
}
void GraphicsLayer::clearClient()
{
m_client = &EmptyGraphicsLayerClient::singleton();
}
String GraphicsLayer::debugName() const
{
return name();
}
void GraphicsLayer::setClient(GraphicsLayerClient& client)
{
m_client = &client;
}
void GraphicsLayer::setParent(GraphicsLayer* layer)
{
ASSERT(!layer || !layer->hasAncestor(this));
m_parent = layer;
}
bool GraphicsLayer::hasAncestor(GraphicsLayer* ancestor) const
{
for (GraphicsLayer* curr = parent(); curr; curr = curr->parent()) {
if (curr == ancestor)
return true;
}
return false;
}
bool GraphicsLayer::setChildren(Vector<Ref<GraphicsLayer>>&& newChildren)
{
// If the contents of the arrays are the same, nothing to do.
if (newChildren == m_children)
return false;
removeAllChildren();
size_t listSize = newChildren.size();
for (size_t i = 0; i < listSize; ++i)
addChild(WTFMove(newChildren[i]));
return true;
}
void GraphicsLayer::addChild(Ref<GraphicsLayer>&& childLayer)
{
ASSERT(childLayer.ptr() != this);
childLayer->removeFromParent();
childLayer->setParent(this);
m_children.append(WTFMove(childLayer));
}
void GraphicsLayer::addChildAtIndex(Ref<GraphicsLayer>&& childLayer, int index)
{
ASSERT(childLayer.ptr() != this);
childLayer->removeFromParent();
childLayer->setParent(this);
m_children.insert(index, WTFMove(childLayer));
}
void GraphicsLayer::addChildBelow(Ref<GraphicsLayer>&& childLayer, GraphicsLayer* sibling)
{
ASSERT(childLayer.ptr() != this);
childLayer->removeFromParent();
childLayer->setParent(this);
for (unsigned i = 0; i < m_children.size(); i++) {
if (sibling == m_children[i].ptr()) {
m_children.insert(i, WTFMove(childLayer));
return;
}
}
m_children.append(WTFMove(childLayer));
}
void GraphicsLayer::addChildAbove(Ref<GraphicsLayer>&& childLayer, GraphicsLayer* sibling)
{
childLayer->removeFromParent();
ASSERT(childLayer.ptr() != this);
childLayer->setParent(this);
for (unsigned i = 0; i < m_children.size(); i++) {
if (sibling == m_children[i].ptr()) {
m_children.insert(i + 1, WTFMove(childLayer));
return;
}
}
m_children.append(WTFMove(childLayer));
}
bool GraphicsLayer::replaceChild(GraphicsLayer* oldChild, Ref<GraphicsLayer>&& newChild)
{
ASSERT(!newChild->parent());
GraphicsLayer* rawNewChild = newChild.ptr();
bool found = false;
for (unsigned i = 0; i < m_children.size(); i++) {
if (oldChild == m_children[i].ptr()) {
m_children[i] = WTFMove(newChild);
found = true;
break;
}
}
if (found) {
oldChild->setParent(nullptr);
rawNewChild->removeFromParent();
rawNewChild->setParent(this);
return true;
}
return false;
}
void GraphicsLayer::removeAllChildren()
{
while (m_children.size()) {
GraphicsLayer* curLayer = m_children[0].ptr();
ASSERT(curLayer->parent());
curLayer->removeFromParent();
// curLayer may be destroyed here.
}
}
void GraphicsLayer::removeFromParent()
{
if (m_parent) {
GraphicsLayer* parent = m_parent;
setParent(nullptr);
parent->m_children.removeFirstMatching([this](auto& layer) {
return layer.ptr() == this;
});
// |this| may be destroyed here.
}
}
const TransformationMatrix& GraphicsLayer::transform() const
{
return m_transform ? *m_transform : TransformationMatrix::identity;
}
void GraphicsLayer::setTransform(const TransformationMatrix& matrix)
{
if (m_transform)
*m_transform = matrix;
else
m_transform = makeUnique<TransformationMatrix>(matrix);
}
const TransformationMatrix& GraphicsLayer::childrenTransform() const
{
return m_childrenTransform ? *m_childrenTransform : TransformationMatrix::identity;
}
void GraphicsLayer::setChildrenTransform(const TransformationMatrix& matrix)
{
if (m_childrenTransform)
*m_childrenTransform = matrix;
else
m_childrenTransform = makeUnique<TransformationMatrix>(matrix);
}
void GraphicsLayer::setMaskLayer(RefPtr<GraphicsLayer>&& layer)
{
if (layer == m_maskLayer)
return;
if (layer) {
layer->removeFromParent();
layer->setParent(this);
layer->setIsMaskLayer(true);
} else if (m_maskLayer) {
m_maskLayer->setParent(nullptr);
m_maskLayer->setIsMaskLayer(false);
}
m_maskLayer = WTFMove(layer);
}
Path GraphicsLayer::shapeLayerPath() const
{
#if USE(CA)
return m_shapeLayerPath;
#else
return Path();
#endif
}
void GraphicsLayer::setShapeLayerPath(const Path& path)
{
#if USE(CA)
m_shapeLayerPath = path;
#else
UNUSED_PARAM(path);
#endif
}
WindRule GraphicsLayer::shapeLayerWindRule() const
{
#if USE(CA)
return m_shapeLayerWindRule;
#else
return WindRule::NonZero;
#endif
}
void GraphicsLayer::setShapeLayerWindRule(WindRule windRule)
{
#if USE(CA)
m_shapeLayerWindRule = windRule;
#else
UNUSED_PARAM(windRule);
#endif
}
void GraphicsLayer::setEventRegion(EventRegion&& eventRegion)
{
m_eventRegion = WTFMove(eventRegion);
}
void GraphicsLayer::noteDeviceOrPageScaleFactorChangedIncludingDescendants()
{
deviceOrPageScaleFactorChanged();
if (m_maskLayer)
m_maskLayer->deviceOrPageScaleFactorChanged();
if (m_replicaLayer)
m_replicaLayer->noteDeviceOrPageScaleFactorChangedIncludingDescendants();
for (auto& layer : children())
layer->noteDeviceOrPageScaleFactorChangedIncludingDescendants();
}
void GraphicsLayer::setIsInWindow(bool inWindow)
{
if (TiledBacking* tiledBacking = this->tiledBacking())
tiledBacking->setIsInWindow(inWindow);
}
void GraphicsLayer::setReplicatedByLayer(RefPtr<GraphicsLayer>&& layer)
{
if (m_replicaLayer == layer)
return;
if (m_replicaLayer)
m_replicaLayer->setReplicatedLayer(nullptr);
if (layer)
layer->setReplicatedLayer(this);
m_replicaLayer = WTFMove(layer);
}
void GraphicsLayer::setOffsetFromRenderer(const FloatSize& offset, ShouldSetNeedsDisplay shouldSetNeedsDisplay)
{
if (offset == m_offsetFromRenderer)
return;
m_offsetFromRenderer = offset;
// If the compositing layer offset changes, we need to repaint.
if (shouldSetNeedsDisplay == SetNeedsDisplay)
setNeedsDisplay();
}
void GraphicsLayer::setScrollOffset(const ScrollOffset& offset, ShouldSetNeedsDisplay shouldSetNeedsDisplay)
{
if (offset == m_scrollOffset)
return;
m_scrollOffset = offset;
// If the compositing layer offset changes, we need to repaint.
if (shouldSetNeedsDisplay == SetNeedsDisplay)
setNeedsDisplay();
}
void GraphicsLayer::setSize(const FloatSize& size)
{
if (size == m_size)
return;
m_size = size;
if (shouldRepaintOnSizeChange())
setNeedsDisplay();
}
void GraphicsLayer::setBackgroundColor(const Color& color)
{
m_backgroundColor = color;
}
void GraphicsLayer::setPaintingPhase(OptionSet<GraphicsLayerPaintingPhase> phase)
{
if (phase == m_paintingPhase)
return;
setNeedsDisplay();
m_paintingPhase = phase;
}
void GraphicsLayer::paintGraphicsLayerContents(GraphicsContext& context, const FloatRect& clip, GraphicsLayerPaintBehavior layerPaintBehavior)
{
FloatSize offset = offsetFromRenderer() - toFloatSize(scrollOffset());
context.translate(-offset);
FloatRect clipRect(clip);
clipRect.move(offset);
client().paintContents(this, context, clipRect, layerPaintBehavior);
}
FloatRect GraphicsLayer::adjustCoverageRectForMovement(const FloatRect& coverageRect, const FloatRect& previousVisibleRect, const FloatRect& currentVisibleRect)
{
// If the old visible rect is empty, we have no information about how the visible area is changing
// (maybe the layer was just created), so don't attempt to expand. Also don't attempt to expand if the rects don't overlap.
if (previousVisibleRect.isEmpty() || !currentVisibleRect.intersects(previousVisibleRect))
return unionRect(coverageRect, currentVisibleRect);
const float paddingMultiplier = 2;
float leftEdgeDelta = paddingMultiplier * (currentVisibleRect.x() - previousVisibleRect.x());
float rightEdgeDelta = paddingMultiplier * (currentVisibleRect.maxX() - previousVisibleRect.maxX());
float topEdgeDelta = paddingMultiplier * (currentVisibleRect.y() - previousVisibleRect.y());
float bottomEdgeDelta = paddingMultiplier * (currentVisibleRect.maxY() - previousVisibleRect.maxY());
FloatRect expandedRect = currentVisibleRect;
// More exposed on left side.
if (leftEdgeDelta < 0) {
float newLeft = expandedRect.x() + leftEdgeDelta;
// Pad to the left, but don't reduce padding that's already in the backing store (since we're still exposing to the left).
if (newLeft < previousVisibleRect.x())
expandedRect.shiftXEdgeTo(newLeft);
else
expandedRect.shiftXEdgeTo(previousVisibleRect.x());
}
// More exposed on right.
if (rightEdgeDelta > 0) {
float newRight = expandedRect.maxX() + rightEdgeDelta;
// Pad to the right, but don't reduce padding that's already in the backing store (since we're still exposing to the right).
if (newRight > previousVisibleRect.maxX())
expandedRect.setWidth(newRight - expandedRect.x());
else
expandedRect.setWidth(previousVisibleRect.maxX() - expandedRect.x());
}
// More exposed at top.
if (topEdgeDelta < 0) {
float newTop = expandedRect.y() + topEdgeDelta;
if (newTop < previousVisibleRect.y())
expandedRect.shiftYEdgeTo(newTop);
else
expandedRect.shiftYEdgeTo(previousVisibleRect.y());
}
// More exposed on bottom.
if (bottomEdgeDelta > 0) {
float newBottom = expandedRect.maxY() + bottomEdgeDelta;
if (newBottom > previousVisibleRect.maxY())
expandedRect.setHeight(newBottom - expandedRect.y());
else
expandedRect.setHeight(previousVisibleRect.maxY() - expandedRect.y());
}
return unionRect(coverageRect, expandedRect);
}
String GraphicsLayer::animationNameForTransition(AnimatedPropertyID property)
{
// | is not a valid identifier character in CSS, so this can never conflict with a keyframe identifier.
StringBuilder id;
id.appendLiteral("-|transition");
id.appendNumber(static_cast<int>(property));
id.append('-');
return id.toString();
}
void GraphicsLayer::suspendAnimations(MonotonicTime)
{
}
void GraphicsLayer::resumeAnimations()
{
}
void GraphicsLayer::getDebugBorderInfo(Color& color, float& width) const
{
width = 2;
if (needsBackdrop()) {
color = Color(255, 0, 255, 128); // has backdrop: magenta
width = 12;
return;
}
if (drawsContent()) {
if (tiledBacking()) {
color = Color(255, 128, 0, 128); // tiled layer: orange
return;
}
color = Color(0, 128, 32, 128); // normal layer: green
return;
}
if (usesContentsLayer()) {
color = Color(0, 64, 128, 150); // non-painting layer with contents: blue
width = 8;
return;
}
if (masksToBounds()) {
color = Color(128, 255, 255, 48); // masking layer: pale blue
width = 16;
return;
}
color = Color(255, 255, 0, 192); // container: yellow
}
void GraphicsLayer::updateDebugIndicators()
{
if (!isShowingDebugBorder())
return;
Color borderColor;
float width = 0;
getDebugBorderInfo(borderColor, width);
setDebugBorder(borderColor, width);
}
void GraphicsLayer::setZPosition(float position)
{
m_zPosition = position;
}
float GraphicsLayer::accumulatedOpacity() const
{
if (!preserves3D())
return 1;
return m_opacity * (parent() ? parent()->accumulatedOpacity() : 1);
}
void GraphicsLayer::distributeOpacity(float accumulatedOpacity)
{
// If this is a transform layer we need to distribute our opacity to all our children
// Incoming accumulatedOpacity is the contribution from our parent(s). We mutiply this by our own
// opacity to get the total contribution
accumulatedOpacity *= m_opacity;
setOpacityInternal(accumulatedOpacity);
if (preserves3D()) {
for (auto& layer : children())
layer->distributeOpacity(accumulatedOpacity);
}
}
static inline const FilterOperations& filterOperationsAt(const KeyframeValueList& valueList, size_t index)
{
return static_cast<const FilterAnimationValue&>(valueList.at(index)).value();
}
int GraphicsLayer::validateFilterOperations(const KeyframeValueList& valueList)
{
#if ENABLE(FILTERS_LEVEL_2)
ASSERT(valueList.property() == AnimatedPropertyFilter || valueList.property() == AnimatedPropertyWebkitBackdropFilter);
#else
ASSERT(valueList.property() == AnimatedPropertyFilter);
#endif
if (valueList.size() < 2)
return -1;
// Empty filters match anything, so find the first non-empty entry as the reference
size_t firstIndex = 0;
for ( ; firstIndex < valueList.size(); ++firstIndex) {
if (!filterOperationsAt(valueList, firstIndex).operations().isEmpty())
break;
}
if (firstIndex >= valueList.size())
return -1;
const FilterOperations& firstVal = filterOperationsAt(valueList, firstIndex);
for (size_t i = firstIndex + 1; i < valueList.size(); ++i) {
const FilterOperations& val = filterOperationsAt(valueList, i);
// An emtpy filter list matches anything.
if (val.operations().isEmpty())
continue;
if (!firstVal.operationsMatch(val))
return -1;
}
return firstIndex;
}
// An "invalid" list is one whose functions don't match, and therefore has to be animated as a Matrix
// The hasBigRotation flag will always return false if isValid is false. Otherwise hasBigRotation is
// true if the rotation between any two keyframes is >= 180 degrees.
static inline const TransformOperations& operationsAt(const KeyframeValueList& valueList, size_t index)
{
return static_cast<const TransformAnimationValue&>(valueList.at(index)).value();
}
int GraphicsLayer::validateTransformOperations(const KeyframeValueList& valueList, bool& hasBigRotation)
{
ASSERT(valueList.property() == AnimatedPropertyTransform);
hasBigRotation = false;
if (valueList.size() < 2)
return -1;
// Empty transforms match anything, so find the first non-empty entry as the reference.
size_t firstIndex = 0;
for ( ; firstIndex < valueList.size(); ++firstIndex) {
if (!operationsAt(valueList, firstIndex).operations().isEmpty())
break;
}
if (firstIndex >= valueList.size())
return -1;
const TransformOperations& firstVal = operationsAt(valueList, firstIndex);
// See if the keyframes are valid.
for (size_t i = firstIndex + 1; i < valueList.size(); ++i) {
const TransformOperations& val = operationsAt(valueList, i);
// An empty transform list matches anything.
if (val.operations().isEmpty())
continue;
if (!firstVal.operationsMatch(val))
return -1;
}
// Keyframes are valid, check for big rotations.
double lastRotationAngle = 0.0;
double maxRotationAngle = -1.0;
for (size_t j = 0; j < firstVal.operations().size(); ++j) {
TransformOperation::OperationType type = firstVal.operations().at(j)->type();
// if this is a rotation entry, we need to see if any angle differences are >= 180 deg
if (type == TransformOperation::ROTATE_X ||
type == TransformOperation::ROTATE_Y ||
type == TransformOperation::ROTATE_Z ||
type == TransformOperation::ROTATE_3D) {
lastRotationAngle = downcast<RotateTransformOperation>(*firstVal.operations().at(j)).angle();
if (maxRotationAngle < 0)
maxRotationAngle = fabs(lastRotationAngle);
for (size_t i = firstIndex + 1; i < valueList.size(); ++i) {
const TransformOperations& val = operationsAt(valueList, i);
double rotationAngle = val.operations().isEmpty() ? 0 : downcast<RotateTransformOperation>(*val.operations().at(j)).angle();
double diffAngle = fabs(rotationAngle - lastRotationAngle);
if (diffAngle > maxRotationAngle)
maxRotationAngle = diffAngle;
lastRotationAngle = rotationAngle;
}
}
}
hasBigRotation = maxRotationAngle >= 180.0;
return firstIndex;
}
double GraphicsLayer::backingStoreMemoryEstimate() const
{
if (!drawsContent())
return 0;
// Effects of page and device scale are ignored; subclasses should override to take these into account.
return static_cast<double>(4 * size().width()) * size().height();
}
void GraphicsLayer::resetTrackedRepaints()
{
repaintRectMap().remove(this);
}
void GraphicsLayer::addRepaintRect(const FloatRect& repaintRect)
{
if (!client().isTrackingRepaints())
return;
FloatRect largestRepaintRect(FloatPoint(), m_size);
largestRepaintRect.intersect(repaintRect);
RepaintMap::iterator repaintIt = repaintRectMap().find(this);
if (repaintIt == repaintRectMap().end()) {
Vector<FloatRect> repaintRects;
repaintRects.append(largestRepaintRect);
repaintRectMap().set(this, repaintRects);
} else {
Vector<FloatRect>& repaintRects = repaintIt->value;
repaintRects.append(largestRepaintRect);
}
}
void GraphicsLayer::traverse(GraphicsLayer& layer, const WTF::Function<void (GraphicsLayer&)>& traversalFunc)
{
traversalFunc(layer);
for (auto& childLayer : layer.children())
traverse(childLayer.get(), traversalFunc);
if (auto* replicaLayer = layer.replicaLayer())
traverse(*replicaLayer, traversalFunc);
if (auto* maskLayer = layer.maskLayer())
traverse(*maskLayer, traversalFunc);
}
GraphicsLayer::EmbeddedViewID GraphicsLayer::nextEmbeddedViewID()
{
static GraphicsLayer::EmbeddedViewID nextEmbeddedViewID;
return ++nextEmbeddedViewID;
}
void GraphicsLayer::dumpLayer(TextStream& ts, LayerTreeAsTextBehavior behavior) const
{
ts << indent << "(" << "GraphicsLayer";
if (behavior & LayerTreeAsTextDebug) {
ts << " " << static_cast<void*>(const_cast<GraphicsLayer*>(this));
ts << " \"" << m_name << "\"";
}
ts << "\n";
dumpProperties(ts, behavior);
ts << indent << ")\n";
}
static void dumpChildren(TextStream& ts, const Vector<Ref<GraphicsLayer>>& children, unsigned& totalChildCount, LayerTreeAsTextBehavior behavior)
{
totalChildCount += children.size();
for (auto& child : children) {
if ((behavior & LayerTreeAsTextDebug) || !child->client().shouldSkipLayerInDump(child.ptr(), behavior)) {
TextStream::IndentScope indentScope(ts);
child->dumpLayer(ts, behavior);
continue;
}
totalChildCount--;
dumpChildren(ts, child->children(), totalChildCount, behavior);
}
}
void GraphicsLayer::dumpProperties(TextStream& ts, LayerTreeAsTextBehavior behavior) const
{
TextStream::IndentScope indentScope(ts);
if (!m_offsetFromRenderer.isZero())
ts << indent << "(offsetFromRenderer " << m_offsetFromRenderer << ")\n";
if (!m_scrollOffset.isZero())
ts << indent << "(scrollOffset " << m_scrollOffset << ")\n";
if (m_position != FloatPoint())
ts << indent << "(position " << m_position.x() << " " << m_position.y() << ")\n";
if (m_approximatePosition)
ts << indent << "(approximate position " << m_approximatePosition.value().x() << " " << m_approximatePosition.value().y() << ")\n";
if (m_boundsOrigin != FloatPoint())
ts << indent << "(bounds origin " << m_boundsOrigin.x() << " " << m_boundsOrigin.y() << ")\n";
if (m_anchorPoint != FloatPoint3D(0.5f, 0.5f, 0)) {
ts << indent << "(anchor " << m_anchorPoint.x() << " " << m_anchorPoint.y();
if (m_anchorPoint.z())
ts << " " << m_anchorPoint.z();
ts << ")\n";
}
if (m_size != IntSize())
ts << indent << "(bounds " << m_size.width() << " " << m_size.height() << ")\n";
if (m_opacity != 1)
ts << indent << "(opacity " << m_opacity << ")\n";
#if ENABLE(CSS_COMPOSITING)
if (m_blendMode != BlendMode::Normal)
ts << indent << "(blendMode " << compositeOperatorName(CompositeSourceOver, m_blendMode) << ")\n";
#endif
if (type() == Type::Normal && tiledBacking())
ts << indent << "(usingTiledLayer 1)\n";
bool needsIOSDumpRenderTreeMainFrameRenderViewLayerIsAlwaysOpaqueHack = client().needsIOSDumpRenderTreeMainFrameRenderViewLayerIsAlwaysOpaqueHack(*this);
if (m_contentsOpaque || needsIOSDumpRenderTreeMainFrameRenderViewLayerIsAlwaysOpaqueHack)
ts << indent << "(contentsOpaque " << (m_contentsOpaque || needsIOSDumpRenderTreeMainFrameRenderViewLayerIsAlwaysOpaqueHack) << ")\n";
if (m_supportsSubpixelAntialiasedText)
ts << indent << "(supports subpixel antialiased text " << m_supportsSubpixelAntialiasedText << ")\n";
if (m_masksToBounds && behavior & LayerTreeAsTextIncludeClipping)
ts << indent << "(clips " << m_masksToBounds << ")\n";
if (m_preserves3D)
ts << indent << "(preserves3D " << m_preserves3D << ")\n";
if (m_drawsContent && client().shouldDumpPropertyForLayer(this, "drawsContent", behavior))
ts << indent << "(drawsContent " << m_drawsContent << ")\n";
if (!m_contentsVisible)
ts << indent << "(contentsVisible " << m_contentsVisible << ")\n";
if (!m_backfaceVisibility)
ts << indent << "(backfaceVisibility " << (m_backfaceVisibility ? "visible" : "hidden") << ")\n";
if (behavior & LayerTreeAsTextDebug)
ts << indent << "(primary-layer-id " << primaryLayerID() << ")\n";
if (m_backgroundColor.isValid() && client().shouldDumpPropertyForLayer(this, "backgroundColor", behavior))
ts << indent << "(backgroundColor " << m_backgroundColor.nameForRenderTreeAsText() << ")\n";
if (behavior & LayerTreeAsTextIncludeAcceleratesDrawing && m_acceleratesDrawing)
ts << indent << "(acceleratesDrawing " << m_acceleratesDrawing << ")\n";
if (behavior & LayerTreeAsTextIncludeBackingStoreAttached)
ts << indent << "(backingStoreAttached " << backingStoreAttachedForTesting() << ")\n";
if (m_transform && !m_transform->isIdentity()) {
ts << indent << "(transform ";
ts << "[" << m_transform->m11() << " " << m_transform->m12() << " " << m_transform->m13() << " " << m_transform->m14() << "] ";
ts << "[" << m_transform->m21() << " " << m_transform->m22() << " " << m_transform->m23() << " " << m_transform->m24() << "] ";
ts << "[" << m_transform->m31() << " " << m_transform->m32() << " " << m_transform->m33() << " " << m_transform->m34() << "] ";
ts << "[" << m_transform->m41() << " " << m_transform->m42() << " " << m_transform->m43() << " " << m_transform->m44() << "])\n";
}
// Avoid dumping the sublayer transform on the root layer, because it's used for geometry flipping, whose behavior
// differs between platforms.
if (parent() && m_childrenTransform && !m_childrenTransform->isIdentity()) {
ts << indent << "(childrenTransform ";
ts << "[" << m_childrenTransform->m11() << " " << m_childrenTransform->m12() << " " << m_childrenTransform->m13() << " " << m_childrenTransform->m14() << "] ";
ts << "[" << m_childrenTransform->m21() << " " << m_childrenTransform->m22() << " " << m_childrenTransform->m23() << " " << m_childrenTransform->m24() << "] ";
ts << "[" << m_childrenTransform->m31() << " " << m_childrenTransform->m32() << " " << m_childrenTransform->m33() << " " << m_childrenTransform->m34() << "] ";
ts << "[" << m_childrenTransform->m41() << " " << m_childrenTransform->m42() << " " << m_childrenTransform->m43() << " " << m_childrenTransform->m44() << "])\n";
}
if (m_maskLayer) {
ts << indent << "(mask layer";
if (behavior & LayerTreeAsTextDebug)
ts << " " << m_maskLayer;
ts << ")\n";
TextStream::IndentScope indentScope(ts);
m_maskLayer->dumpLayer(ts, behavior);
}
if (m_replicaLayer) {
ts << indent << "(replica layer";
if (behavior & LayerTreeAsTextDebug)
ts << " " << m_replicaLayer;
ts << ")\n";
TextStream::IndentScope indentScope(ts);
m_replicaLayer->dumpLayer(ts, behavior);
}
if (m_replicatedLayer) {
ts << indent << "(replicated layer";
if (behavior & LayerTreeAsTextDebug)
ts << " " << m_replicatedLayer;
ts << ")\n";
}
if (behavior & LayerTreeAsTextIncludeRepaintRects && repaintRectMap().contains(this) && !repaintRectMap().get(this).isEmpty() && client().shouldDumpPropertyForLayer(this, "repaintRects", behavior)) {
ts << indent << "(repaint rects\n";
for (size_t i = 0; i < repaintRectMap().get(this).size(); ++i) {
if (repaintRectMap().get(this)[i].isEmpty())
continue;
TextStream::IndentScope indentScope(ts);
ts << indent << "(rect ";
ts << repaintRectMap().get(this)[i].x() << " ";
ts << repaintRectMap().get(this)[i].y() << " ";
ts << repaintRectMap().get(this)[i].width() << " ";
ts << repaintRectMap().get(this)[i].height();
ts << ")\n";
}
ts << indent << ")\n";
}
if (behavior & LayerTreeAsTextIncludeEventRegion && !m_eventRegion.isEmpty()) {
ts << indent << "(event region" << m_eventRegion;
ts << indent << ")\n";
}
if (behavior & LayerTreeAsTextIncludePaintingPhases && paintingPhase())
ts << indent << "(paintingPhases " << paintingPhase() << ")\n";
dumpAdditionalProperties(ts, behavior);
if (m_children.size()) {
TextStream childrenStream;
childrenStream.increaseIndent(ts.indent());
unsigned totalChildCount = 0;
dumpChildren(childrenStream, m_children, totalChildCount, behavior);
if (totalChildCount) {
ts << indent << "(children " << totalChildCount << "\n";
ts << childrenStream.release();
ts << indent << ")\n";
}
}
}
TextStream& operator<<(TextStream& ts, const Vector<GraphicsLayer::PlatformLayerID>& layers)
{
for (size_t i = 0; i < layers.size(); ++i) {
if (i)
ts << " ";
ts << layers[i];
}
return ts;
}
TextStream& operator<<(TextStream& ts, GraphicsLayerPaintingPhase phase)
{
switch (phase) {
case GraphicsLayerPaintingPhase::Background: ts << "background"; break;
case GraphicsLayerPaintingPhase::Foreground: ts << "foreground"; break;
case GraphicsLayerPaintingPhase::Mask: ts << "mask"; break;
case GraphicsLayerPaintingPhase::ClipPath: ts << "clip-path"; break;
case GraphicsLayerPaintingPhase::OverflowContents: ts << "overflow-contents"; break;
case GraphicsLayerPaintingPhase::CompositedScroll: ts << "composited-scroll"; break;
case GraphicsLayerPaintingPhase::ChildClippingMask: ts << "child-clipping-mask"; break;
}
return ts;
}
TextStream& operator<<(TextStream& ts, const GraphicsLayer::CustomAppearance& customAppearance)
{
switch (customAppearance) {
case GraphicsLayer::CustomAppearance::None: ts << "none"; break;
case GraphicsLayer::CustomAppearance::ScrollingOverhang: ts << "scrolling-overhang"; break;
case GraphicsLayer::CustomAppearance::ScrollingShadow: ts << "scrolling-shadow"; break;
case GraphicsLayer::CustomAppearance::LightBackdrop: ts << "light-backdrop"; break;
case GraphicsLayer::CustomAppearance::DarkBackdrop: ts << "dark-backdrop"; break;
}
return ts;
}
String GraphicsLayer::layerTreeAsText(LayerTreeAsTextBehavior behavior) const
{
TextStream ts(TextStream::LineMode::MultipleLine, TextStream::Formatting::SVGStyleRect);
dumpLayer(ts, behavior);
return ts.release();
}
} // namespace WebCore
#if ENABLE(TREE_DEBUGGING)
void showGraphicsLayerTree(const WebCore::GraphicsLayer* layer)
{
if (!layer)
return;
String output = layer->layerTreeAsText(WebCore::LayerTreeAsTextShowAll);
WTFLogAlways("%s\n", output.utf8().data());
}
#endif