// Hit Testing
bool RenderRegion::hitTestContents(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action)
{
if (!isValid() || action != HitTestForeground)
return false;
LayoutRect boundsRect = borderBoxRectInRegion(locationInContainer.region());
boundsRect.moveBy(accumulatedOffset);
if (visibleToHitTesting() && locationInContainer.intersects(boundsRect)) {
if (m_flowThread->hitTestFlowThreadPortionInRegion(this, flowThreadPortionRect(), flowThreadPortionOverflowRect(), request, result,
locationInContainer, LayoutPoint(accumulatedOffset.x() + borderLeft() + paddingLeft(), accumulatedOffset.y() + borderTop() + paddingTop())))
return true;
}
return false;
}
MouseRelatedEvent::MouseRelatedEvent(const AtomicString& eventType, bool canBubble, bool cancelable, EventTarget* relatedTarget,
RawPtr<AbstractView> abstractView, int detail, const IntPoint& screenLocation,
const IntPoint& rootFrameLocation, const IntPoint& movementDelta, PlatformEvent::Modifiers modifiers,
double platformTimeStamp, PositionType positionType, InputDeviceCapabilities* sourceCapabilities)
: UIEventWithKeyState(eventType, canBubble, cancelable, relatedTarget, abstractView, detail, modifiers, platformTimeStamp, sourceCapabilities)
, m_screenLocation(screenLocation)
, m_movementDelta(movementDelta)
, m_positionType(positionType)
{
LayoutPoint adjustedPageLocation;
LayoutPoint scrollPosition;
LocalFrame* frame = view() && view()->isLocalDOMWindow() ? toLocalDOMWindow(view())->frame() : nullptr;
if (frame && hasPosition()) {
if (FrameView* frameView = frame->view()) {
scrollPosition = frameView->scrollPosition();
adjustedPageLocation = frameView->rootFrameToContents(rootFrameLocation);
float scaleFactor = 1 / frame->pageZoomFactor();
if (scaleFactor != 1.0f) {
adjustedPageLocation.scale(scaleFactor, scaleFactor);
scrollPosition.scale(scaleFactor, scaleFactor);
}
}
}
m_clientLocation = adjustedPageLocation - toLayoutSize(scrollPosition);
m_pageLocation = adjustedPageLocation;
// Set up initial values for coordinates.
// Correct values are computed lazily, see computeRelativePosition.
m_layerLocation = m_pageLocation;
m_offsetLocation = m_pageLocation;
computePageLocation();
m_hasCachedRelativePosition = false;
}
bool EllipsisBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
LayoutPoint adjustedLocation = accumulatedOffset + roundedLayoutPoint(topLeft());
// Hit test the markup box.
if (InlineBox* markupBox = this->markupBox()) {
RenderStyle* style = m_renderer->style(isFirstLineStyle());
LayoutUnit mtx = adjustedLocation.x() + m_logicalWidth - markupBox->x();
LayoutUnit mty = adjustedLocation.y() + style->fontMetrics().ascent() - (markupBox->y() + markupBox->renderer()->style(isFirstLineStyle())->fontMetrics().ascent());
if (markupBox->nodeAtPoint(request, result, locationInContainer, LayoutPoint(mtx, mty), lineTop, lineBottom)) {
renderer()->updateHitTestResult(result, locationInContainer.point() - LayoutSize(mtx, mty));
return true;
}
}
LayoutRect boundsRect(adjustedLocation, LayoutSize(m_logicalWidth, m_height));
if (visibleToHitTestRequest(request) && boundsRect.intersects(HitTestLocation::rectForPoint(locationInContainer.point(), 0, 0, 0, 0))) {
renderer()->updateHitTestResult(result, locationInContainer.point() - toLayoutSize(adjustedLocation));
if (!result.addNodeToRectBasedTestResult(renderer()->node(), request, locationInContainer, boundsRect))
return true;
}
return false;
}
RenderRegion* RenderFlowThread::mapFromFlowToRegion(TransformState& transformState) const
{
if (!hasValidRegionInfo())
return 0;
LayoutRect boxRect = transformState.mappedQuad().enclosingBoundingBox();
flipForWritingMode(boxRect);
// FIXME: We need to refactor RenderObject::absoluteQuads to be able to split the quads across regions,
// for now we just take the center of the mapped enclosing box and map it to a region.
// Note: Using the center in order to avoid rounding errors.
LayoutPoint center = boxRect.center();
RenderRegion* renderRegion = regionAtBlockOffset(isHorizontalWritingMode() ? center.y() : center.x(), true);
if (!renderRegion)
return 0;
LayoutRect flippedRegionRect(renderRegion->flowThreadPortionRect());
flipForWritingMode(flippedRegionRect);
transformState.move(renderRegion->contentBoxRect().location() - flippedRegionRect.location());
return renderRegion;
}
VisiblePosition RenderSVGText::positionForPoint(const LayoutPoint& pointInContents, const RenderRegion* region)
{
RootInlineBox* rootBox = firstRootBox();
if (!rootBox)
return createVisiblePosition(0, DOWNSTREAM);
ASSERT(!rootBox->nextRootBox());
ASSERT(childrenInline());
InlineBox* closestBox = downcast<SVGRootInlineBox>(*rootBox).closestLeafChildForPosition(pointInContents);
if (!closestBox)
return createVisiblePosition(0, DOWNSTREAM);
return closestBox->renderer().positionForPoint(LayoutPoint(pointInContents.x(), closestBox->y()), region);
}
PositionWithAffinity RenderSVGText::positionForPoint(const LayoutPoint& pointInContents)
{
RootInlineBox* rootBox = firstRootBox();
if (!rootBox)
return createPositionWithAffinity(0, DOWNSTREAM);
ASSERT(!rootBox->nextRootBox());
ASSERT(childrenInline());
InlineBox* closestBox = toSVGRootInlineBox(rootBox)->closestLeafChildForPosition(pointInContents);
if (!closestBox)
return createPositionWithAffinity(0, DOWNSTREAM);
return closestBox->renderer().positionForPoint(LayoutPoint(pointInContents.x(), closestBox->y()));
}
void SliderThumbElement::setPositionFromPoint(const LayoutPoint& point)
{
HTMLInputElement* input = hostInput();
if (!input->renderer() || !renderer())
return;
LayoutPoint offset = roundedLayoutPoint(input->renderer()->absoluteToLocal(point, false, true));
bool isVertical = hasVerticalAppearance(input);
LayoutUnit trackSize;
LayoutUnit position;
LayoutUnit currentPosition;
// We need to calculate currentPosition from absolute points becaue the
// renderer for this node is usually on a layer and renderBox()->x() and
// y() are unusable.
LayoutPoint absoluteThumbOrigin = renderBox()->absoluteBoundingBoxRect().location();
LayoutPoint absoluteSliderContentOrigin = roundedLayoutPoint(input->renderer()->localToAbsolute());
if (isVertical) {
trackSize = input->renderBox()->contentHeight() - renderBox()->height();
position = offset.y() - renderBox()->height() / 2;
currentPosition = absoluteThumbOrigin.y() - absoluteSliderContentOrigin.y();
} else {
trackSize = input->renderBox()->contentWidth() - renderBox()->width();
position = offset.x() - renderBox()->width() / 2;
currentPosition = absoluteThumbOrigin.x() - absoluteSliderContentOrigin.x();
}
position = max<LayoutUnit>(0, min(position, trackSize));
if (position == currentPosition)
return;
StepRange range(input);
double fraction = static_cast<double>(position) / trackSize;
if (isVertical || !renderBox()->style()->isLeftToRightDirection())
fraction = 1 - fraction;
double value = range.clampValue(range.valueFromProportion(fraction));
// FIXME: This is no longer being set from renderer. Consider updating the method name.
input->setValueFromRenderer(serializeForNumberType(value));
renderer()->setNeedsLayout(true);
input->dispatchFormControlChangeEvent();
}
bool RenderLineBoxList::rangeIntersectsRect(RenderBoxModelObject* renderer, LayoutUnit logicalTop, LayoutUnit logicalBottom, const LayoutRect& rect, const LayoutPoint& offset) const
{
RenderBox* block;
if (renderer->isBox())
block = toRenderBox(renderer);
else
block = renderer->containingBlock();
LayoutUnit physicalStart = block->flipForWritingMode(logicalTop);
LayoutUnit physicalEnd = block->flipForWritingMode(logicalBottom);
LayoutUnit physicalExtent = absoluteValue(physicalEnd - physicalStart);
physicalStart = min(physicalStart, physicalEnd);
if (renderer->style()->isHorizontalWritingMode()) {
physicalStart += offset.y();
if (physicalStart >= rect.maxY() || physicalStart + physicalExtent <= rect.y())
return false;
} else {
physicalStart += offset.x();
if (physicalStart >= rect.maxX() || physicalStart + physicalExtent <= rect.x())
return false;
}
return true;
}
void RenderEmbeddedObject::paintSnapshotImage(PaintInfo& paintInfo, const LayoutPoint& paintOffset, Image* image)
{
LayoutUnit cWidth = contentWidth();
LayoutUnit cHeight = contentHeight();
if (!cWidth || !cHeight)
return;
GraphicsContext* context = paintInfo.context;
LayoutSize contentSize(cWidth, cHeight);
LayoutPoint contentLocation = location() + paintOffset;
contentLocation.move(borderLeft() + paddingLeft(), borderTop() + paddingTop());
LayoutRect rect(contentLocation, contentSize);
IntRect alignedRect = snappedIntRect(rect);
if (alignedRect.width() <= 0 || alignedRect.height() <= 0)
return;
bool useLowQualityScaling = shouldPaintAtLowQuality(context, image, image, alignedRect.size());
ImageOrientationDescription orientationDescription(shouldRespectImageOrientation());
#if ENABLE(CSS_IMAGE_ORIENTATION)
orientationDescription.setImageOrientationEnum(style().imageOrientation());
#endif
context->drawImage(image, style().colorSpace(), alignedRect, ImagePaintingOptions(orientationDescription, useLowQualityScaling));
}
void RenderFrameSet::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (paintInfo.phase != PaintPhaseForeground)
return;
RenderObject* child = firstChild();
if (!child)
return;
LayoutPoint adjustedPaintOffset = paintOffset + location();
size_t rows = m_rows.m_sizes.size();
size_t cols = m_cols.m_sizes.size();
LayoutUnit borderThickness = frameSet()->border();
LayoutUnit yPos = 0;
for (size_t r = 0; r < rows; r++) {
LayoutUnit xPos = 0;
for (size_t c = 0; c < cols; c++) {
child->paint(paintInfo, adjustedPaintOffset);
xPos += m_cols.m_sizes[c];
if (borderThickness && m_cols.m_allowBorder[c + 1]) {
paintColumnBorder(paintInfo, pixelSnappedIntRect(LayoutRect(adjustedPaintOffset.x() + xPos, adjustedPaintOffset.y() + yPos, borderThickness, height())));
xPos += borderThickness;
}
child = child->nextSibling();
if (!child)
return;
}
yPos += m_rows.m_sizes[r];
if (borderThickness && m_rows.m_allowBorder[r + 1]) {
paintRowBorder(paintInfo, pixelSnappedIntRect(LayoutRect(adjustedPaintOffset.x(), adjustedPaintOffset.y() + yPos, width(), borderThickness)));
yPos += borderThickness;
}
}
}
bool LineBoxList::hitTest(LineLayoutBoxModel layoutObject, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction) const
{
if (hitTestAction != HitTestForeground)
return false;
ASSERT(layoutObject.isLayoutBlock() || (layoutObject.isLayoutInline() && layoutObject.hasLayer())); // The only way an inline could hit test like this is if it has a layer.
// If we have no lines then we have no work to do.
if (!firstLineBox())
return false;
LayoutPoint point = locationInContainer.point();
CullRect cullRect(firstLineBox()->isHorizontal() ?
IntRect(point.x(), point.y() - locationInContainer.topPadding(), 1, locationInContainer.topPadding() + locationInContainer.bottomPadding() + 1) :
IntRect(point.x() - locationInContainer.leftPadding(), point.y(), locationInContainer.rightPadding() + locationInContainer.leftPadding() + 1, 1));
if (!anyLineIntersectsRect(layoutObject, cullRect, accumulatedOffset))
return false;
// See if our root lines contain the point. If so, then we hit test
// them further. Note that boxes can easily overlap, so we can't make any assumptions
// based off positions of our first line box or our last line box.
for (InlineFlowBox* curr = lastLineBox(); curr; curr = curr->prevLineBox()) {
RootInlineBox& root = curr->root();
if (rangeIntersectsRect(layoutObject, curr->logicalTopVisualOverflow(root.lineTop()), curr->logicalBottomVisualOverflow(root.lineBottom()), cullRect, accumulatedOffset)) {
bool inside = curr->nodeAtPoint(result, locationInContainer, accumulatedOffset, root.lineTop(), root.lineBottom());
if (inside) {
layoutObject.updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset));
return true;
}
}
}
return false;
}
void RenderRegion::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
// Delegate painting of content in region to RenderFlowThread.
if (!m_flowThread || !isValid())
return;
if (Frame* frame = this->frame()) {
if (Page* page = frame->page())
page->addRelevantRepaintedObject(this, paintInfo.rect);
}
setRegionBoxesRegionStyle();
m_flowThread->paintIntoRegion(paintInfo, this, LayoutPoint(paintOffset.x() + borderLeft() + paddingLeft(), paintOffset.y() + borderTop() + paddingTop()));
restoreRegionBoxesOriginalStyle();
}
VisiblePosition RenderSVGText::positionForPoint(const LayoutPoint& pointInContents, const RenderRegion* region)
{
RootInlineBox* rootBox = firstRootBox();
if (!rootBox)
return createVisiblePosition(0, DOWNSTREAM);
ASSERT_WITH_SECURITY_IMPLICATION(rootBox->isSVGRootInlineBox());
ASSERT(!rootBox->nextRootBox());
ASSERT(childrenInline());
InlineBox* closestBox = toSVGRootInlineBox(rootBox)->closestLeafChildForPosition(pointInContents);
if (!closestBox)
return createVisiblePosition(0, DOWNSTREAM);
return closestBox->renderer().positionForPoint(LayoutPoint(pointInContents.x(), closestBox->y()), region);
}
VisiblePosition RenderSVGText::positionForPoint(const LayoutPoint& pointInContents)
{
RootInlineBox* rootBox = firstRootBox();
if (!rootBox)
return createVisiblePosition(0, DOWNSTREAM);
ASSERT(rootBox->isSVGRootInlineBox());
ASSERT(!rootBox->nextRootBox());
ASSERT(childrenInline());
InlineBox* closestBox = static_cast<SVGRootInlineBox*>(rootBox)->closestLeafChildForPosition(pointInContents);
if (!closestBox)
return createVisiblePosition(0, DOWNSTREAM);
return closestBox->renderer()->positionForPoint(LayoutPoint(pointInContents.x(), closestBox->y()));
}
void LayoutSliderContainer::layout()
{
HTMLInputElement* input = toHTMLInputElement(node()->shadowHost());
bool isVertical = hasVerticalAppearance(input);
mutableStyleRef().setFlexDirection(isVertical ? FlowColumn : FlowRow);
TextDirection oldTextDirection = style()->direction();
if (isVertical) {
// FIXME: Work around rounding issues in RTL vertical sliders. We want them to
// render identically to LTR vertical sliders. We can remove this work around when
// subpixel rendering is enabled on all ports.
mutableStyleRef().setDirection(LTR);
}
Element* thumbElement = input->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderThumb());
Element* trackElement = input->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderTrack());
LayoutBox* thumb = thumbElement ? thumbElement->layoutBox() : 0;
LayoutBox* track = trackElement ? trackElement->layoutBox() : 0;
SubtreeLayoutScope layoutScope(*this);
// Force a layout to reset the position of the thumb so the code below doesn't move the thumb to the wrong place.
// FIXME: Make a custom layout class for the track and move the thumb positioning code there.
if (track)
layoutScope.setChildNeedsLayout(track);
LayoutFlexibleBox::layout();
mutableStyleRef().setDirection(oldTextDirection);
// These should always exist, unless someone mutates the shadow DOM (e.g., in the inspector).
if (!thumb || !track)
return;
double percentageOffset = sliderPosition(input).toDouble();
LayoutUnit availableExtent = isVertical ? track->contentHeight() : track->contentWidth();
availableExtent -= isVertical ? thumb->size().height() : thumb->size().width();
LayoutUnit offset = percentageOffset * availableExtent;
LayoutPoint thumbLocation = thumb->location();
if (isVertical)
thumbLocation.setY(thumbLocation.y() + track->contentHeight() - thumb->size().height() - offset);
else if (style()->isLeftToRightDirection())
thumbLocation.setX(thumbLocation.x() + offset);
else
thumbLocation.setX(thumbLocation.x() - offset);
thumb->setLocation(thumbLocation);
// We need one-off invalidation code here because painting of the timeline element does not go through style.
// Instead it has a custom implementation in C++ code.
// Therefore the style system cannot understand when it needs to be paint invalidated.
setShouldDoFullPaintInvalidation();
}
LayoutPoint InlineBox::logicalPositionToPhysicalPoint(const LayoutPoint& point, const LayoutSize& size) const
{
if (!UNLIKELY(lineLayoutItem().hasFlippedBlocksWritingMode()))
return LayoutPoint(point.x(), point.y());
LayoutBlockFlow& block = root().block();
if (block.style()->isHorizontalWritingMode())
return LayoutPoint(point.x(), block.size().height() - size.height() - point.y());
return LayoutPoint(block.size().width() - size.width() - point.x(), point.y());
}
void distanceDataForNode(FocusType type, const FocusCandidate& current, FocusCandidate& candidate)
{
if (areElementsOnSameLine(current, candidate)) {
if ((type == FocusTypeUp && current.rect.y() > candidate.rect.y()) || (type == FocusTypeDown && candidate.rect.y() > current.rect.y())) {
candidate.distance = 0;
candidate.alignment = Full;
return;
}
}
LayoutRect nodeRect = candidate.rect;
LayoutRect currentRect = current.rect;
deflateIfOverlapped(currentRect, nodeRect);
if (!isRectInDirection(type, currentRect, nodeRect))
return;
LayoutPoint exitPoint;
LayoutPoint entryPoint;
entryAndExitPointsForDirection(type, currentRect, nodeRect, exitPoint, entryPoint);
LayoutUnit xAxis = exitPoint.x() - entryPoint.x();
LayoutUnit yAxis = exitPoint.y() - entryPoint.y();
LayoutUnit navigationAxisDistance;
LayoutUnit orthogonalAxisDistance;
switch (type) {
case FocusTypeLeft:
case FocusTypeRight:
navigationAxisDistance = xAxis.abs();
orthogonalAxisDistance = yAxis.abs();
break;
case FocusTypeUp:
case FocusTypeDown:
navigationAxisDistance = yAxis.abs();
orthogonalAxisDistance = xAxis.abs();
break;
default:
ASSERT_NOT_REACHED();
return;
}
double euclidianDistancePow2 = (xAxis * xAxis + yAxis * yAxis).toDouble();
LayoutRect intersectionRect = intersection(currentRect, nodeRect);
double overlap = (intersectionRect.width() * intersectionRect.height()).toDouble();
// Distance calculation is based on http://www.w3.org/TR/WICD/#focus-handling
candidate.distance = sqrt(euclidianDistancePow2) + navigationAxisDistance+ orthogonalAxisDistance * 2 - sqrt(overlap);
LayoutSize viewSize = candidate.visibleNode->document().page()->deprecatedLocalMainFrame()->view()->visibleContentRect().size();
candidate.alignment = alignmentForRects(type, currentRect, nodeRect, viewSize);
}
void RenderSVGRoot::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& adjustedPaintOffset)
{
// An empty viewport disables rendering.
if (borderBoxRect().isEmpty())
return;
// Don't paint, if the context explicitely disabled it.
if (paintInfo.context->paintingDisabled())
return;
// Don't paint if we don't have kids, except if we have filters we should paint those.
if (!firstChild()) {
SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(this);
if (!resources || !resources->filter())
return;
}
if (Frame* frame = this->frame()) {
if (Page* page = frame->page())
page->addRelevantRepaintedObject(this, paintInfo.rect);
}
// Make a copy of the PaintInfo because applyTransform will modify the damage rect.
PaintInfo childPaintInfo(paintInfo);
childPaintInfo.context->save();
// Apply initial viewport clip - not affected by overflow handling
childPaintInfo.context->clip(overflowClipRect(adjustedPaintOffset, paintInfo.renderRegion));
// Convert from container offsets (html renderers) to a relative transform (svg renderers).
// Transform from our paint container's coordinate system to our local coords.
childPaintInfo.applyTransform(AffineTransform::translation(adjustedPaintOffset.x() - x(), adjustedPaintOffset.y() - y()) * localToParentTransform());
bool continueRendering = true;
if (childPaintInfo.phase == PaintPhaseForeground)
continueRendering = SVGRenderSupport::prepareToRenderSVGContent(this, childPaintInfo);
if (continueRendering)
RenderBox::paint(childPaintInfo, LayoutPoint());
if (childPaintInfo.phase == PaintPhaseForeground)
SVGRenderSupport::finishRenderSVGContent(this, childPaintInfo, paintInfo.context);
childPaintInfo.context->restore();
}
void RenderRegion::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
// Delegate painting of content in region to RenderFlowThread.
if (!m_flowThread || !isValid())
return;
#ifndef NDEBUG
m_insideRegionPaint = true;
#endif
setRegionBoxesRegionStyle();
m_flowThread->paintIntoRegion(paintInfo, this, LayoutPoint(paintOffset.x() + borderLeft() + paddingLeft(), paintOffset.y() + borderTop() + paddingTop()));
restoreRegionBoxesOriginalStyle();
#ifndef NDEBUG
m_insideRegionPaint = false;
#endif
}
void ImagePainter::paintReplaced(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
LayoutUnit cWidth = m_layoutImage.contentWidth();
LayoutUnit cHeight = m_layoutImage.contentHeight();
GraphicsContext* context = paintInfo.context;
if (!m_layoutImage.imageResource()->hasImage()) {
if (paintInfo.phase == PaintPhaseSelection)
return;
if (cWidth > 2 && cHeight > 2) {
// Draw an outline rect where the image should be.
IntRect paintRect = pixelSnappedIntRect(LayoutRect(paintOffset.x() + m_layoutImage.borderLeft() + m_layoutImage.paddingLeft(), paintOffset.y() + m_layoutImage.borderTop() + m_layoutImage.paddingTop(), cWidth, cHeight));
LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutImage, paintInfo.phase, paintRect);
if (drawingRecorder.canUseCachedDrawing())
return;
context->setStrokeStyle(SolidStroke);
context->setStrokeColor(Color::lightGray);
context->setFillColor(Color::transparent);
context->drawRect(paintRect);
}
} else if (cWidth > 0 && cHeight > 0) {
LayoutRect contentRect = m_layoutImage.contentBoxRect();
contentRect.moveBy(paintOffset);
LayoutRect paintRect = m_layoutImage.replacedContentRect();
paintRect.moveBy(paintOffset);
LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutImage, paintInfo.phase, contentRect);
if (drawingRecorder.canUseCachedDrawing())
return;
bool clip = !contentRect.contains(paintRect);
if (clip) {
context->save();
context->clip(contentRect);
}
paintIntoRect(context, paintRect);
if (clip)
context->restore();
}
}
PositionWithAffinity RenderReplaced::positionForPoint(const LayoutPoint& point)
{
// FIXME: This code is buggy if the replaced element is relative positioned.
InlineBox* box = inlineBoxWrapper();
RootInlineBox* rootBox = box ? &box->root() : 0;
LayoutUnit top = rootBox ? rootBox->selectionTop() : logicalTop();
LayoutUnit bottom = rootBox ? rootBox->selectionBottom() : logicalBottom();
LayoutUnit blockDirectionPosition = point.y() + y();
if (blockDirectionPosition < top)
return createPositionWithAffinity(caretMinOffset(), DOWNSTREAM); // coordinates are above
if (blockDirectionPosition >= bottom)
return createPositionWithAffinity(caretMaxOffset(), DOWNSTREAM); // coordinates are below
return RenderBox::positionForPoint(point);
}
// Hit Testing
bool RenderRegion::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action)
{
if (!isValid())
return false;
LayoutPoint adjustedLocation = accumulatedOffset + location();
// Check our bounds next. For this purpose always assume that we can only be hit in the
// foreground phase (which is true for replaced elements like images).
LayoutRect boundsRect(adjustedLocation, size());
if (visibleToHitTesting() && action == HitTestForeground && boundsRect.intersects(result.rectForPoint(pointInContainer))) {
// Check the contents of the RenderFlowThread.
if (m_flowThread && m_flowThread->hitTestRegion(this, request, result, pointInContainer, LayoutPoint(adjustedLocation.x() + borderLeft() + paddingLeft(), adjustedLocation.y() + borderTop() + paddingTop())))
return true;
updateHitTestResult(result, pointInContainer - toLayoutSize(adjustedLocation));
if (!result.addNodeToRectBasedTestResult(node(), pointInContainer, boundsRect))
return true;
}
return false;
}
void ImagePainter::paintReplaced(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
LayoutUnit cWidth = m_layoutImage.contentWidth();
LayoutUnit cHeight = m_layoutImage.contentHeight();
GraphicsContext* context = paintInfo.context;
if (!m_layoutImage.imageResource()->hasImage()) {
if (paintInfo.phase == PaintPhaseSelection)
return;
if (cWidth > 2 && cHeight > 2) {
if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, m_layoutImage, paintInfo.phase, paintOffset))
return;
// Draw an outline rect where the image should be.
IntRect paintRect = pixelSnappedIntRect(LayoutRect(paintOffset.x() + m_layoutImage.borderLeft() + m_layoutImage.paddingLeft(), paintOffset.y() + m_layoutImage.borderTop() + m_layoutImage.paddingTop(), cWidth, cHeight));
LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutImage, paintInfo.phase, paintRect, paintOffset);
context->setStrokeStyle(SolidStroke);
context->setStrokeColor(Color::lightGray);
context->setFillColor(Color::transparent);
context->drawRect(paintRect);
}
} else if (cWidth > 0 && cHeight > 0) {
LayoutRect contentRect = m_layoutImage.contentBoxRect();
contentRect.moveBy(paintOffset);
LayoutRect paintRect = m_layoutImage.replacedContentRect();
paintRect.moveBy(paintOffset);
Optional<ClipRecorder> clipRecorder;
if (!contentRect.contains(paintRect)) {
// TODO(fmalita): can we get rid of this clip and adjust the image src/dst rect instead?
clipRecorder.emplace(*context, m_layoutImage, paintInfo.displayItemTypeForClipping(), contentRect);
}
if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, m_layoutImage, paintInfo.phase, paintOffset))
return;
LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutImage, paintInfo.phase, contentRect, paintOffset);
paintIntoRect(context, paintRect);
}
}
void RenderSliderContainer::layout()
{
ASSERT(element()->shadowHost());
auto& input = downcast<HTMLInputElement>(*element()->shadowHost());
bool isVertical = hasVerticalAppearance(input);
mutableStyle().setFlexDirection(isVertical ? FlowColumn : FlowRow);
TextDirection oldTextDirection = style().direction();
if (isVertical) {
// FIXME: Work around rounding issues in RTL vertical sliders. We want them to
// render identically to LTR vertical sliders. We can remove this work around when
// subpixel rendering is enabled on all ports.
mutableStyle().setDirection(LTR);
}
RenderBox* thumb = input.sliderThumbElement() ? input.sliderThumbElement()->renderBox() : nullptr;
RenderBox* track = input.sliderTrackElement() ? input.sliderTrackElement()->renderBox() : nullptr;
// Force a layout to reset the position of the thumb so the code below doesn't move the thumb to the wrong place.
// FIXME: Make a custom Render class for the track and move the thumb positioning code there.
if (track)
track->setChildNeedsLayout(MarkOnlyThis);
RenderFlexibleBox::layout();
mutableStyle().setDirection(oldTextDirection);
// These should always exist, unless someone mutates the shadow DOM (e.g., in the inspector).
if (!thumb || !track)
return;
double percentageOffset = sliderPosition(input).toDouble();
LayoutUnit availableExtent = isVertical ? track->contentHeight() : track->contentWidth();
availableExtent -= isVertical ? thumb->height() : thumb->width();
LayoutUnit offset = percentageOffset * availableExtent;
LayoutPoint thumbLocation = thumb->location();
if (isVertical)
thumbLocation.setY(thumbLocation.y() + track->contentHeight() - thumb->height() - offset);
else if (style().isLeftToRightDirection())
thumbLocation.setX(thumbLocation.x() + offset);
else
thumbLocation.setX(thumbLocation.x() - offset);
thumb->setLocation(thumbLocation);
thumb->repaint();
}
LayoutPoint RenderBoxModelObject::adjustedPositionRelativeToOffsetParent(const LayoutPoint& startPoint) const
{
// If the element is the HTML body element or doesn't have a parent
// return 0 and stop this algorithm.
if (isBody() || !parent())
return LayoutPoint();
LayoutPoint referencePoint = startPoint;
referencePoint.move(parent()->columnOffset(referencePoint));
// If the offsetParent of the element is null, or is the HTML body element,
// return the distance between the canvas origin and the left border edge
// of the element and stop this algorithm.
Element* element = offsetParent();
if (!element)
return referencePoint;
if (const RenderBoxModelObject* offsetParent = element->renderBoxModelObject()) {
if (offsetParent->isBox() && !offsetParent->isBody())
referencePoint.move(-toRenderBox(offsetParent)->borderLeft(), -toRenderBox(offsetParent)->borderTop());
if (!isOutOfFlowPositioned() || flowThreadContainingBlock()) {
if (isRelPositioned())
referencePoint.move(relativePositionOffset());
RenderObject* current;
for (current = parent(); current != offsetParent && current->parent(); current = current->parent()) {
// FIXME: What are we supposed to do inside SVG content?
if (!isOutOfFlowPositioned()) {
if (current->isBox() && !current->isTableRow())
referencePoint.moveBy(toRenderBox(current)->topLeftLocation());
referencePoint.move(current->parent()->columnOffset(referencePoint));
}
}
if (offsetParent->isBox() && offsetParent->isBody() && !offsetParent->isPositioned())
referencePoint.moveBy(toRenderBox(offsetParent)->topLeftLocation());
}
}
return referencePoint;
}
void paintFlow(const RenderBlockFlow& flow, const Layout& layout, PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (paintInfo.phase != PaintPhaseForeground)
return;
RenderStyle& style = flow.style();
if (style.visibility() != VISIBLE)
return;
bool debugBordersEnabled = flow.frame().settings().simpleLineLayoutDebugBordersEnabled();
GraphicsContext& context = paintInfo.context();
const FontCascade& font = style.fontCascade();
TextPaintStyle textPaintStyle = computeTextPaintStyle(flow.frame(), style, paintInfo);
GraphicsContextStateSaver stateSaver(context, textPaintStyle.strokeWidth > 0);
updateGraphicsContext(context, textPaintStyle);
LayoutRect paintRect = paintInfo.rect;
paintRect.moveBy(-paintOffset);
auto resolver = runResolver(flow, layout);
float strokeOverflow = ceilf(flow.style().textStrokeWidth());
float deviceScaleFactor = flow.document().deviceScaleFactor();
for (const auto& run : resolver.rangeForRect(paintRect)) {
FloatRect rect = run.rect();
rect.inflate(strokeOverflow);
if (!rect.intersects(paintRect) || run.start() == run.end())
continue;
TextRun textRun(run.text());
textRun.setTabSize(!style.collapseWhiteSpace(), style.tabSize());
// x position indicates the line offset from the rootbox. It's always 0 in case of simple line layout.
textRun.setXPos(0);
FloatPoint textOrigin = FloatPoint(rect.x() + paintOffset.x(), roundToDevicePixel(run.baselinePosition() + paintOffset.y(), deviceScaleFactor));
context.drawText(font, textRun, textOrigin);
if (debugBordersEnabled)
paintDebugBorders(context, LayoutRect(run.rect()), paintOffset);
}
}
LayoutRect RenderMathMLOperator::paintCharacter(PaintInfo& info, UChar character, const LayoutPoint& origin, CharacterPaintTrimming trim)
{
GlyphData data = style()->font().glyphDataForCharacter(character, false);
FloatRect glyphBounds = data.fontData->boundsForGlyph(data.glyph);
LayoutRect glyphPaintRect(origin, LayoutSize(glyphBounds.x() + glyphBounds.width(), glyphBounds.height()));
glyphPaintRect.setY(origin.y() + glyphBounds.y());
// In order to have glyphs fit snugly with one another we snap the connecting edges to pixel boundaries
// and trim off one pixel. The pixel trim is to account for fonts that have edge pixels that have less
// than full coverage. These edge pixels can introduce small seams between connected glyphs
FloatRect clipBounds = info.rect;
switch (trim) {
case TrimTop:
glyphPaintRect.shiftYEdgeTo(glyphPaintRect.y().ceil() + 1);
clipBounds.shiftYEdgeTo(glyphPaintRect.y());
break;
case TrimBottom:
glyphPaintRect.shiftMaxYEdgeTo(glyphPaintRect.maxY().floor() - 1);
clipBounds.shiftMaxYEdgeTo(glyphPaintRect.maxY());
break;
case TrimTopAndBottom:
LayoutUnit temp = glyphPaintRect.y() + 1;
glyphPaintRect.shiftYEdgeTo(temp.ceil());
glyphPaintRect.shiftMaxYEdgeTo(glyphPaintRect.maxY().floor() - 1);
clipBounds.shiftYEdgeTo(glyphPaintRect.y());
clipBounds.shiftMaxYEdgeTo(glyphPaintRect.maxY());
break;
}
// Clipping the enclosing IntRect avoids any potential issues at joined edges.
GraphicsContextStateSaver stateSaver(*info.context);
info.context->clip(clipBounds);
info.context->drawText(style()->font(), TextRun(&character, 1), origin);
return glyphPaintRect;
}
// Hit Testing
bool RenderRegion::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action)
{
if (!isValid())
return false;
LayoutPoint adjustedLocation = accumulatedOffset + location();
// Check our bounds next. For this purpose always assume that we can only be hit in the
// foreground phase (which is true for replaced elements like images).
// FIXME: Once we support overflow, we need to intersect with that and not with the bounds rect.
LayoutRect boundsRect = borderBoxRectInRegion(locationInContainer.region());
boundsRect.moveBy(adjustedLocation);
if (visibleToHitTestRequest(request) && action == HitTestForeground && locationInContainer.intersects(boundsRect)) {
// Check the contents of the RenderFlowThread.
if (m_flowThread->hitTestFlowThreadPortionInRegion(this, flowThreadPortionRect(), flowThreadPortionOverflowRect(), request, result, locationInContainer, LayoutPoint(adjustedLocation.x() + borderLeft() + paddingLeft(), adjustedLocation.y() + borderTop() + paddingTop())))
return true;
updateHitTestResult(result, locationInContainer.point() - toLayoutSize(adjustedLocation));
if (!result.addNodeToRectBasedTestResult(generatingNode(), request, locationInContainer, boundsRect))
return true;
}
return false;
}
void RenderMultiColumnSet::adjustRegionBoundsFromFlowThreadPortionRect(const LayoutPoint& layerOffset, LayoutRect& regionBounds)
{
LayoutUnit layerLogicalTop = isHorizontalWritingMode() ? layerOffset.y() : layerOffset.x();
unsigned startColumn = columnIndexAtOffset(layerLogicalTop);
LayoutUnit colGap = columnGap();
LayoutUnit colLogicalWidth = computedColumnWidth();
LayoutRect flowThreadPortion = flowThreadPortionRectAt(startColumn);
LayoutPoint translationOffset;
RenderBlockFlow* parentFlow = toRenderBlockFlow(parent());
bool progressionReversed = parentFlow->multiColumnFlowThread()->progressionIsReversed();
bool progressionIsInline = parentFlow->multiColumnFlowThread()->progressionIsInline();
LayoutUnit initialBlockOffset = initialBlockOffsetForPainting();
LayoutUnit inlineOffset = progressionIsInline ? startColumn * (colLogicalWidth + colGap) : LayoutUnit();
bool leftToRight = style().isLeftToRightDirection() ^ progressionReversed;
if (!leftToRight) {
inlineOffset = -inlineOffset;
if (progressionReversed)
inlineOffset += contentLogicalWidth() - colLogicalWidth;
}
translationOffset.setX(inlineOffset);
LayoutUnit blockOffset = initialBlockOffset + (isHorizontalWritingMode() ? -flowThreadPortion.y() : -flowThreadPortion.x());
if (!progressionIsInline) {
if (!progressionReversed)
blockOffset = startColumn * colGap;
else
blockOffset -= startColumn * (computedColumnHeight() + colGap);
}
if (isFlippedBlocksWritingMode(style().writingMode()))
blockOffset = -blockOffset;
translationOffset.setY(blockOffset);
if (!isHorizontalWritingMode())
translationOffset = translationOffset.transposedPoint();
// FIXME: The translation needs to include the multicolumn set's content offset within the
// multicolumn block as well. This won't be an issue until we start creating multiple multicolumn sets.
regionBounds.moveBy(roundedIntPoint(-translationOffset));
}
VisiblePosition RenderTextLineBoxes::positionForPoint(const RenderText& renderer, const LayoutPoint& point) const
{
if (!m_first || !renderer.textLength())
return renderer.createVisiblePosition(0, DOWNSTREAM);
LayoutUnit pointLineDirection = m_first->isHorizontal() ? point.x() : point.y();
LayoutUnit pointBlockDirection = m_first->isHorizontal() ? point.y() : point.x();
bool blocksAreFlipped = renderer.style().isFlippedBlocksWritingMode();
InlineTextBox* lastBox = nullptr;
for (auto box = m_first; box; box = box->nextTextBox()) {
if (box->isLineBreak() && !box->prevLeafChild() && box->nextLeafChild() && !box->nextLeafChild()->isLineBreak())
box = box->nextTextBox();
auto& rootBox = box->root();
LayoutUnit top = std::min(rootBox.selectionTop(), rootBox.lineTop());
if (pointBlockDirection > top || (!blocksAreFlipped && pointBlockDirection == top)) {
LayoutUnit bottom = rootBox.selectionBottom();
if (rootBox.nextRootBox())
bottom = std::min(bottom, rootBox.nextRootBox()->lineTop());
if (pointBlockDirection < bottom || (blocksAreFlipped && pointBlockDirection == bottom)) {
ShouldAffinityBeDownstream shouldAffinityBeDownstream;
#if PLATFORM(IOS)
if (pointLineDirection != box->logicalLeft() && point.x() < box->x() + box->logicalWidth()) {
int half = box->x() + box->logicalWidth() / 2;
EAffinity affinity = point.x() < half ? DOWNSTREAM : VP_UPSTREAM_IF_POSSIBLE;
return renderer.createVisiblePosition(box->offsetForPosition(pointLineDirection) + box->start(), affinity);
}
#endif
if (lineDirectionPointFitsInBox(pointLineDirection, *box, shouldAffinityBeDownstream))
return createVisiblePositionAfterAdjustingOffsetForBiDi(*box, box->offsetForPosition(pointLineDirection), shouldAffinityBeDownstream);
}
}
lastBox = box;
}
if (lastBox) {
ShouldAffinityBeDownstream shouldAffinityBeDownstream;
lineDirectionPointFitsInBox(pointLineDirection, *lastBox, shouldAffinityBeDownstream);
return createVisiblePositionAfterAdjustingOffsetForBiDi(*lastBox, lastBox->offsetForPosition(pointLineDirection) + lastBox->start(), shouldAffinityBeDownstream);
}
return renderer.createVisiblePosition(0, DOWNSTREAM);
}
