LayoutRect RenderReplaced::replacedContentRect(const LayoutSize* overriddenIntrinsicSize) const
{
LayoutRect contentRect = contentBoxRect();
ObjectFit objectFit = style()->objectFit();
if (objectFit == ObjectFitFill && style()->objectPosition() == RenderStyle::initialObjectPosition())
objectFit = ObjectFitContain;
LayoutSize intrinsicSize = overriddenIntrinsicSize ? *overriddenIntrinsicSize : this->intrinsicSize();
if (!intrinsicSize.width() || !intrinsicSize.height())
return contentRect;
LayoutRect finalRect = contentRect;
switch (objectFit) {
case ObjectFitContain:
case ObjectFitScaleDown:
case ObjectFitCover:
finalRect.setSize(finalRect.size().fitToAspectRatio(intrinsicSize, objectFit == ObjectFitCover ? AspectRatioFitGrow : AspectRatioFitShrink));
if (objectFit != ObjectFitScaleDown || finalRect.width() <= intrinsicSize.width())
break;
// fall through
case ObjectFitNone:
finalRect.setSize(intrinsicSize);
break;
case ObjectFitFill:
break;
default:
ASSERT_NOT_REACHED();
}
LayoutUnit xOffset = minimumValueForLength(style()->objectPosition().x(), contentRect.width() - finalRect.width());
LayoutUnit yOffset = minimumValueForLength(style()->objectPosition().y(), contentRect.height() - finalRect.height());
finalRect.move(xOffset, yOffset);
return finalRect;
}
LayoutSize RenderVideo::calculateIntrinsicSize()
{
// Spec text from 4.8.6
//
// The intrinsic width of a video element's playback area is the intrinsic width
// of the video resource, if that is available; otherwise it is the intrinsic
// width of the poster frame, if that is available; otherwise it is 300 CSS pixels.
//
// The intrinsic height of a video element's playback area is the intrinsic height
// of the video resource, if that is available; otherwise it is the intrinsic
// height of the poster frame, if that is available; otherwise it is 150 CSS pixels.
MediaPlayer* player = videoElement().player();
if (player && videoElement().readyState() >= HTMLVideoElement::HAVE_METADATA) {
LayoutSize size = player->naturalSize();
if (!size.isEmpty())
return size;
}
if (videoElement().shouldDisplayPosterImage() && !m_cachedImageSize.isEmpty() && !imageResource()->errorOccurred())
return m_cachedImageSize;
// When the natural size of the video is unavailable, we use the provided
// width and height attributes of the video element as the intrinsic size until
// better values become available.
if (videoElement().hasAttribute(widthAttr) && videoElement().hasAttribute(heightAttr))
return LayoutSize(videoElement().width(), videoElement().height());
// <video> in standalone media documents should not use the default 300x150
// size since they also have audio-only files. By setting the intrinsic
// size to 300x1 the video will resize itself in these cases, and audio will
// have the correct height (it needs to be > 0 for controls to render properly).
if (videoElement().document().isMediaDocument())
return LayoutSize(defaultSize().width(), 1);
return defaultSize();
}
void RenderImage::layoutShadowControls(const LayoutSize& oldSize)
{
auto* controlsRenderer = downcast<RenderBox>(firstChild());
if (!controlsRenderer)
return;
bool controlsNeedLayout = controlsRenderer->needsLayout();
// If the region chain has changed we also need to relayout the controls to update the region box info.
// FIXME: We can do better once we compute region box info for RenderReplaced, not only for RenderBlock.
const RenderFlowThread* flowThread = flowThreadContainingBlock();
if (flowThread && !controlsNeedLayout) {
if (flowThread->pageLogicalSizeChanged())
controlsNeedLayout = true;
}
LayoutSize newSize = contentBoxRect().size();
if (newSize == oldSize && !controlsNeedLayout)
return;
// When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
// instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
// and this method might be called many times per second during video playback, use a LayoutStateMaintainer:
LayoutStateMaintainer statePusher(view(), *this, locationOffset(), hasTransform() || hasReflection() || style().isFlippedBlocksWritingMode());
if (shadowControlsNeedCustomLayoutMetrics()) {
controlsRenderer->setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));
controlsRenderer->style().setHeight(Length(newSize.height(), Fixed));
controlsRenderer->style().setWidth(Length(newSize.width(), Fixed));
}
controlsRenderer->setNeedsLayout(MarkOnlyThis);
controlsRenderer->layout();
clearChildNeedsLayout();
statePusher.pop();
}
void ImageDocument::imageUpdated()
{
ASSERT(m_imageElement);
if (m_imageSizeIsKnown)
return;
LayoutSize imageSize = this->imageSize();
if (imageSize.isEmpty())
return;
m_imageSizeIsKnown = true;
if (m_shouldShrinkImage) {
#if PLATFORM(IOS)
FloatSize screenSize = page()->chrome().screenSize();
if (imageSize.width() > screenSize.width())
processViewport(String::format("width=%u", static_cast<unsigned>(imageSize.width().toInt())), ViewportArguments::ImageDocument);
#else
// Call windowSizeChanged for its side effect of sizing the image.
windowSizeChanged();
#endif
}
}
void RenderGeometryMap::push(const RenderObject* renderer, const LayoutSize& offsetFromContainer, bool accumulatingTransform, bool isNonUniform, bool isFixedPosition, bool hasTransform, LayoutSize offsetForFixedPosition)
{
// fprintf(stderr, "RenderGeometryMap::push %p %d,%d isNonUniform=%d\n", renderer, offsetFromContainer.width().toInt(), offsetFromContainer.height().toInt(), isNonUniform);
ASSERT(m_insertionPosition != kNotFound);
ASSERT(!renderer->isRenderView() || !m_insertionPosition || m_mapCoordinatesFlags & TraverseDocumentBoundaries);
ASSERT(offsetForFixedPosition.isZero() || renderer->isRenderView());
m_mapping.insert(m_insertionPosition, RenderGeometryMapStep(renderer, accumulatingTransform, isNonUniform, isFixedPosition, hasTransform));
RenderGeometryMapStep& step = m_mapping[m_insertionPosition];
step.m_offset = offsetFromContainer;
step.m_offsetForFixedPosition = offsetForFixedPosition;
stepInserted(step);
}
void LayoutGeometryMap::push(const LayoutObject* layoutObject, const LayoutSize& offsetFromContainer, GeometryInfoFlags flags, LayoutSize offsetForFixedPosition)
{
LAYOUT_GEOMETRY_MAP_LOG("LayoutGeometryMap::push %p %d,%d isNonUniform=%d\n", layoutObject, offsetFromContainer.width().toInt(), offsetFromContainer.height().toInt(), isNonUniform);
ASSERT(m_insertionPosition != kNotFound);
ASSERT(!layoutObject->isLayoutView() || !m_insertionPosition || m_mapCoordinatesFlags & TraverseDocumentBoundaries);
ASSERT(offsetForFixedPosition.isZero() || layoutObject->isLayoutView());
m_mapping.insert(m_insertionPosition, LayoutGeometryMapStep(layoutObject, flags));
LayoutGeometryMapStep& step = m_mapping[m_insertionPosition];
step.m_offset = offsetFromContainer;
step.m_offsetForFixedPosition = offsetForFixedPosition;
stepInserted(step);
}
void RenderGeometryMap::push(const RenderObject* renderer, const TransformationMatrix& t, bool accumulatingTransform, bool isNonUniform, bool isFixedPosition, bool hasTransform, LayoutSize offsetForFixedPosition)
{
ASSERT(m_insertionPosition != kNotFound);
ASSERT(!renderer->isRenderView() || !m_insertionPosition || m_mapCoordinatesFlags & TraverseDocumentBoundaries);
ASSERT(offsetForFixedPosition.isZero() || renderer->isRenderView());
m_mapping.insert(m_insertionPosition, RenderGeometryMapStep(renderer, accumulatingTransform, isNonUniform, isFixedPosition, hasTransform));
RenderGeometryMapStep& step = m_mapping[m_insertionPosition];
step.m_offsetForFixedPosition = offsetForFixedPosition;
if (!t.isIntegerTranslation())
step.m_transform = adoptPtr(new TransformationMatrix(t));
else
step.m_offset = LayoutSize(t.e(), t.f());
stepInserted(step);
}
void CachedImage::setContainerSizeForRenderer(const CachedImageClient* renderer, const LayoutSize& containerSize, float containerZoom)
{
if (containerSize.isEmpty())
return;
ASSERT(renderer);
ASSERT(containerZoom);
if (!m_image) {
m_pendingContainerSizeRequests.set(renderer, SizeAndZoom(containerSize, containerZoom));
return;
}
if (!m_image->isSVGImage()) {
m_image->setContainerSize(containerSize);
return;
}
m_svgImageCache->setContainerSizeForRenderer(renderer, containerSize, containerZoom);
}
void LayoutGeometryMap::push(const LayoutObject* layoutObject, const TransformationMatrix& t, GeometryInfoFlags flags, LayoutSize offsetForFixedPosition)
{
ASSERT(m_insertionPosition != kNotFound);
ASSERT(!layoutObject->isLayoutView() || !m_insertionPosition || m_mapCoordinatesFlags & TraverseDocumentBoundaries);
ASSERT(offsetForFixedPosition.isZero() || layoutObject->isLayoutView());
m_mapping.insert(m_insertionPosition, LayoutGeometryMapStep(layoutObject, flags));
LayoutGeometryMapStep& step = m_mapping[m_insertionPosition];
step.m_offsetForFixedPosition = offsetForFixedPosition;
if (!t.isIntegerTranslation())
step.m_transform = TransformationMatrix::create(t);
else
step.m_offset = LayoutSize(LayoutUnit(t.e()), LayoutUnit(t.f()));
stepInserted(step);
}
bool ImageDocument::imageFitsInWindow()
{
if (!m_imageElement)
return true;
FrameView* view = this->view();
if (!view)
return true;
LayoutSize imageSize = this->imageSize();
LayoutSize windowSize = LayoutSize(view->width(), view->height());
return imageSize.width() <= windowSize.width() && imageSize.height() <= windowSize.height();
}
LayoutRect RenderSnapshottedPlugIn::tryToFitStartLabel(LabelSize size, const LayoutRect& contentBox) const
{
Image* labelImage = startLabelImage(size);
if (!labelImage)
return LayoutRect();
// Assume that the labelImage has been provided to match our device scale.
float scaleFactor = 1;
if (document()->page())
scaleFactor = document()->page()->deviceScaleFactor();
IntSize labelImageSize = labelImage->size();
labelImageSize.scale(1 / (scaleFactor ? scaleFactor : 1));
LayoutSize labelSize = labelImageSize - LayoutSize(2 * startLabelInset, 2 * startLabelInset);
LayoutRect candidateRect(contentBox.maxXMinYCorner() + LayoutSize(-startLabelPadding, startLabelPadding) + LayoutSize(-labelSize.width(), 0), labelSize);
// The minimum allowed content box size is the label image placed in the center of the box, surrounded by startLabelPadding.
if (candidateRect.x() < startLabelPadding || candidateRect.maxY() > contentBox.height() - startLabelPadding)
return LayoutRect();
return candidateRect;
}
void ShapeOutsideInfo::setReferenceBoxLogicalSize(
LayoutSize newReferenceBoxLogicalSize) {
bool isHorizontalWritingMode =
m_layoutBox.containingBlock()->style()->isHorizontalWritingMode();
switch (referenceBox(*m_layoutBox.style()->shapeOutside())) {
case MarginBox:
if (isHorizontalWritingMode)
newReferenceBoxLogicalSize.expand(m_layoutBox.marginWidth(),
m_layoutBox.marginHeight());
else
newReferenceBoxLogicalSize.expand(m_layoutBox.marginHeight(),
m_layoutBox.marginWidth());
break;
case BorderBox:
break;
case PaddingBox:
if (isHorizontalWritingMode)
newReferenceBoxLogicalSize.shrink(m_layoutBox.borderWidth(),
m_layoutBox.borderHeight());
else
newReferenceBoxLogicalSize.shrink(m_layoutBox.borderHeight(),
m_layoutBox.borderWidth());
break;
case ContentBox:
if (isHorizontalWritingMode)
newReferenceBoxLogicalSize.shrink(m_layoutBox.borderAndPaddingWidth(),
m_layoutBox.borderAndPaddingHeight());
else
newReferenceBoxLogicalSize.shrink(m_layoutBox.borderAndPaddingHeight(),
m_layoutBox.borderAndPaddingWidth());
break;
case BoxMissing:
ASSERT_NOT_REACHED();
break;
}
newReferenceBoxLogicalSize.clampNegativeToZero();
if (m_referenceBoxLogicalSize == newReferenceBoxLogicalSize)
return;
markShapeAsDirty();
m_referenceBoxLogicalSize = newReferenceBoxLogicalSize;
}
bool ImageDocument::imageFitsInWindow() const
{
ASSERT(m_shrinkToFitMode == Desktop);
if (!m_imageElement || m_imageElement->document() != this)
return true;
FrameView* view = frame()->view();
if (!view)
return true;
ASSERT(m_imageElement->cachedImage());
LayoutSize imageSize = m_imageElement->cachedImage()->imageSizeForLayoutObject(m_imageElement->layoutObject(), pageZoomFactor(this));
LayoutSize windowSize = LayoutSize(view->width(), view->height());
return imageSize.width() <= windowSize.width() && imageSize.height() <= windowSize.height();
}
float ImageDocument::scale() const
{
if (!m_imageElement || m_imageElement->document() != this)
return 1.0f;
FrameView* view = frame()->view();
if (!view)
return 1;
ASSERT(m_imageElement->cachedImage());
LayoutSize imageSize = m_imageElement->cachedImage()->imageSizeForLayoutObject(m_imageElement->layoutObject(), pageZoomFactor(this));
LayoutSize windowSize = LayoutSize(view->width(), view->height());
float widthScale = windowSize.width().toFloat() / imageSize.width().toFloat();
float heightScale = windowSize.height().toFloat() / imageSize.height().toFloat();
return min(widthScale, heightScale);
}
LayoutSize RenderBoxModelObject::relativePositionOffset() const
{
LayoutSize offset = accumulateInFlowPositionOffsets(this);
RenderBlock* containingBlock = this->containingBlock();
// Objects that shrink to avoid floats normally use available line width when computing containing block width. However
// in the case of relative positioning using percentages, we can't do this. The offset should always be resolved using the
// available width of the containing block. Therefore we don't use containingBlockLogicalWidthForContent() here, but instead explicitly
// call availableWidth on our containing block.
if (!style()->left().isAuto()) {
if (!style()->right().isAuto() && !containingBlock->style()->isLeftToRightDirection())
offset.setWidth(-valueForLength(style()->right(), containingBlock->availableWidth()));
else
offset.expand(valueForLength(style()->left(), containingBlock->availableWidth()), 0);
} else if (!style()->right().isAuto()) {
offset.expand(-valueForLength(style()->right(), containingBlock->availableWidth()), 0);
}
// If the containing block of a relatively positioned element does not
// specify a height, a percentage top or bottom offset should be resolved as
// auto. An exception to this is if the containing block has the WinIE quirk
// where <html> and <body> assume the size of the viewport. In this case,
// calculate the percent offset based on this height.
// See <https://bugs.webkit.org/show_bug.cgi?id=26396>.
if (!style()->top().isAuto()
&& (!containingBlock->hasAutoHeightOrContainingBlockWithAutoHeight()
|| !style()->top().isPercent()
|| containingBlock->stretchesToViewport()))
offset.expand(0, valueForLength(style()->top(), containingBlock->availableHeight()));
else if (!style()->bottom().isAuto()
&& (!containingBlock->hasAutoHeightOrContainingBlockWithAutoHeight()
|| !style()->bottom().isPercent()
|| containingBlock->stretchesToViewport()))
offset.expand(0, -valueForLength(style()->bottom(), containingBlock->availableHeight()));
return offset;
}
void ShapeOutsideInfo::setReferenceBoxLogicalSize(LayoutSize newReferenceBoxLogicalSize)
{
bool isHorizontalWritingMode = m_renderer.containingBlock()->style().isHorizontalWritingMode();
switch (referenceBox(*m_renderer.style().shapeOutside())) {
case MarginBox:
if (isHorizontalWritingMode)
newReferenceBoxLogicalSize.expand(m_renderer.horizontalMarginExtent(), m_renderer.verticalMarginExtent());
else
newReferenceBoxLogicalSize.expand(m_renderer.verticalMarginExtent(), m_renderer.horizontalMarginExtent());
break;
case BorderBox:
break;
case PaddingBox:
if (isHorizontalWritingMode)
newReferenceBoxLogicalSize.shrink(m_renderer.horizontalBorderExtent(), m_renderer.verticalBorderExtent());
else
newReferenceBoxLogicalSize.shrink(m_renderer.verticalBorderExtent(), m_renderer.horizontalBorderExtent());
break;
case ContentBox:
if (isHorizontalWritingMode)
newReferenceBoxLogicalSize.shrink(m_renderer.horizontalBorderAndPaddingExtent(), m_renderer.verticalBorderAndPaddingExtent());
else
newReferenceBoxLogicalSize.shrink(m_renderer.verticalBorderAndPaddingExtent(), m_renderer.horizontalBorderAndPaddingExtent());
break;
case Fill:
case Stroke:
case ViewBox:
case BoxMissing:
ASSERT_NOT_REACHED();
break;
}
if (m_referenceBoxLogicalSize == newReferenceBoxLogicalSize)
return;
markShapeAsDirty();
m_referenceBoxLogicalSize = newReferenceBoxLogicalSize;
}
void RenderImage::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
LayoutUnit cWidth = contentWidth();
LayoutUnit cHeight = contentHeight();
LayoutUnit leftBorder = borderLeft();
LayoutUnit topBorder = borderTop();
LayoutUnit leftPad = paddingLeft();
LayoutUnit topPad = paddingTop();
GraphicsContext* context = paintInfo.context;
if (!m_imageResource->hasImage() || m_imageResource->errorOccurred()) {
if (paintInfo.phase == PaintPhaseSelection)
return;
if (cWidth > 2 && cHeight > 2) {
// Draw an outline rect where the image should be.
context->setStrokeStyle(SolidStroke);
context->setStrokeColor(Color::lightGray, style()->colorSpace());
context->setFillColor(Color::transparent, style()->colorSpace());
context->drawRect(LayoutRect(paintOffset.x() + leftBorder + leftPad, paintOffset.y() + topBorder + topPad, cWidth, cHeight));
bool errorPictureDrawn = false;
LayoutSize imageOffset;
// When calculating the usable dimensions, exclude the pixels of
// the ouline rect so the error image/alt text doesn't draw on it.
LayoutUnit usableWidth = cWidth - 2;
LayoutUnit usableHeight = cHeight - 2;
RefPtr<Image> image = m_imageResource->image();
if (m_imageResource->errorOccurred() && !image->isNull() && usableWidth >= image->width() && usableHeight >= image->height()) {
float deviceScaleFactor = Page::deviceScaleFactor(frame());
// Call brokenImage() explicitly to ensure we get the broken image icon at the appropriate resolution.
pair<Image*, float> brokenImageAndImageScaleFactor = m_imageResource->cachedImage()->brokenImage(deviceScaleFactor);
image = brokenImageAndImageScaleFactor.first;
IntSize imageSize = image->size();
imageSize.scale(1 / brokenImageAndImageScaleFactor.second);
// Center the error image, accounting for border and padding.
LayoutUnit centerX = (usableWidth - imageSize.width()) / 2;
if (centerX < 0)
centerX = 0;
LayoutUnit centerY = (usableHeight - imageSize.height()) / 2;
if (centerY < 0)
centerY = 0;
imageOffset = LayoutSize(leftBorder + leftPad + centerX + 1, topBorder + topPad + centerY + 1);
context->drawImage(image.get(), style()->colorSpace(), IntRect(paintOffset + imageOffset, imageSize));
errorPictureDrawn = true;
}
if (!m_altText.isEmpty()) {
String text = document()->displayStringModifiedByEncoding(m_altText);
context->setFillColor(style()->visitedDependentColor(CSSPropertyColor), style()->colorSpace());
const Font& font = style()->font();
const FontMetrics& fontMetrics = font.fontMetrics();
LayoutUnit ascent = fontMetrics.ascent();
LayoutPoint altTextOffset = paintOffset;
altTextOffset.move(leftBorder + leftPad, topBorder + topPad + ascent);
// Only draw the alt text if it'll fit within the content box,
// and only if it fits above the error image.
TextRun textRun = RenderBlock::constructTextRun(this, font, text, style());
LayoutUnit textWidth = font.width(textRun);
if (errorPictureDrawn) {
if (usableWidth >= textWidth && fontMetrics.height() <= imageOffset.height())
context->drawText(font, textRun, altTextOffset);
} else if (usableWidth >= textWidth && cHeight >= fontMetrics.height())
context->drawText(font, textRun, altTextOffset);
}
}
} else if (m_imageResource->hasImage() && cWidth > 0 && cHeight > 0) {
RefPtr<Image> img = m_imageResource->image(cWidth, cHeight);
if (!img || img->isNull())
return;
#if PLATFORM(MAC)
if (style()->highlight() != nullAtom && !paintInfo.context->paintingDisabled())
paintCustomHighlight(toPoint(paintOffset - location()), style()->highlight(), true);
#endif
LayoutSize contentSize(cWidth, cHeight);
LayoutPoint contentLocation = paintOffset;
contentLocation.move(leftBorder + leftPad, topBorder + topPad);
paintIntoRect(context, LayoutRect(contentLocation, contentSize));
}
}
void FloatPoint::move(const LayoutSize& size)
{
m_x += size.width();
m_y += size.height();
}
void LayoutTextControlSingleLine::layout() {
LayoutAnalyzer::Scope analyzer(*this);
LayoutBlockFlow::layoutBlock(true);
LayoutBox* innerEditorLayoutObject = innerEditorElement()->layoutBox();
Element* container = containerElement();
LayoutBox* containerLayoutObject =
container ? container->layoutBox() : nullptr;
// Center the child block in the block progression direction (vertical
// centering for horizontal text fields).
if (!container && innerEditorLayoutObject &&
innerEditorLayoutObject->size().height() != contentLogicalHeight()) {
LayoutUnit logicalHeightDiff =
innerEditorLayoutObject->logicalHeight() - contentLogicalHeight();
innerEditorLayoutObject->setLogicalTop(
innerEditorLayoutObject->logicalTop() -
(logicalHeightDiff / 2 + layoutMod(logicalHeightDiff, 2)));
} else if (container && containerLayoutObject &&
containerLayoutObject->size().height() != contentLogicalHeight()) {
LayoutUnit logicalHeightDiff =
containerLayoutObject->logicalHeight() - contentLogicalHeight();
containerLayoutObject->setLogicalTop(
containerLayoutObject->logicalTop() -
(logicalHeightDiff / 2 + layoutMod(logicalHeightDiff, 2)));
}
HTMLElement* placeholderElement = inputElement()->placeholderElement();
if (LayoutBox* placeholderBox =
placeholderElement ? placeholderElement->layoutBox() : 0) {
LayoutSize innerEditorSize;
if (innerEditorLayoutObject)
innerEditorSize = innerEditorLayoutObject->size();
placeholderBox->mutableStyleRef().setWidth(Length(
innerEditorSize.width() - placeholderBox->borderAndPaddingWidth(),
Fixed));
bool neededLayout = placeholderBox->needsLayout();
placeholderBox->layoutIfNeeded();
LayoutPoint textOffset;
if (innerEditorLayoutObject)
textOffset = innerEditorLayoutObject->location();
if (editingViewPortElement() && editingViewPortElement()->layoutBox())
textOffset +=
toLayoutSize(editingViewPortElement()->layoutBox()->location());
if (containerLayoutObject)
textOffset += toLayoutSize(containerLayoutObject->location());
if (innerEditorLayoutObject) {
// We use inlineBlockBaseline() for innerEditor because it has no
// inline boxes when we show the placeholder.
int innerEditorBaseline =
innerEditorLayoutObject->inlineBlockBaseline(HorizontalLine);
// We use firstLineBoxBaseline() for placeholder.
// TODO(tkent): It's inconsistent with innerEditorBaseline. However
// placeholderBox->inlineBlockBase() is unexpectedly larger.
int placeholderBaseline = placeholderBox->firstLineBoxBaseline();
textOffset += LayoutSize(0, innerEditorBaseline - placeholderBaseline);
}
placeholderBox->setLocation(textOffset);
// The placeholder gets layout last, after the parent text control and its
// other children, so in order to get the correct overflow from the
// placeholder we need to recompute it now.
if (neededLayout)
computeOverflow(clientLogicalBottom());
}
}
FloatSize::FloatSize(const LayoutSize& size) : m_width(size.width()), m_height(size.height())
{
}
std::unique_ptr<Shape> Shape::createShape(const BasicShape* basicShape, const LayoutSize& logicalBoxSize, WritingMode writingMode, float margin)
{
ASSERT(basicShape);
bool horizontalWritingMode = isHorizontalWritingMode(writingMode);
float boxWidth = horizontalWritingMode ? logicalBoxSize.width() : logicalBoxSize.height();
float boxHeight = horizontalWritingMode ? logicalBoxSize.height() : logicalBoxSize.width();
std::unique_ptr<Shape> shape;
switch (basicShape->type()) {
case BasicShape::BasicShapeCircleType: {
const BasicShapeCircle* circle = static_cast<const BasicShapeCircle*>(basicShape);
float centerX = floatValueForCenterCoordinate(circle->centerX(), boxWidth);
float centerY = floatValueForCenterCoordinate(circle->centerY(), boxHeight);
float radius = circle->floatValueForRadiusInBox(boxWidth, boxHeight);
FloatPoint logicalCenter = physicalPointToLogical(FloatPoint(centerX, centerY), logicalBoxSize.height(), writingMode);
shape = createCircleShape(logicalCenter, radius);
break;
}
case BasicShape::BasicShapeEllipseType: {
const BasicShapeEllipse* ellipse = static_cast<const BasicShapeEllipse*>(basicShape);
float centerX = floatValueForCenterCoordinate(ellipse->centerX(), boxWidth);
float centerY = floatValueForCenterCoordinate(ellipse->centerY(), boxHeight);
float radiusX = ellipse->floatValueForRadiusInBox(ellipse->radiusX(), centerX, boxWidth);
float radiusY = ellipse->floatValueForRadiusInBox(ellipse->radiusY(), centerY, boxHeight);
FloatPoint logicalCenter = physicalPointToLogical(FloatPoint(centerX, centerY), logicalBoxSize.height(), writingMode);
shape = createEllipseShape(logicalCenter, FloatSize(radiusX, radiusY));
break;
}
case BasicShape::BasicShapePolygonType: {
const BasicShapePolygon& polygon = *static_cast<const BasicShapePolygon*>(basicShape);
const Vector<Length>& values = polygon.values();
size_t valuesSize = values.size();
ASSERT(!(valuesSize % 2));
std::unique_ptr<Vector<FloatPoint>> vertices = std::make_unique<Vector<FloatPoint>>(valuesSize / 2);
for (unsigned i = 0; i < valuesSize; i += 2) {
FloatPoint vertex(
floatValueForLength(values.at(i), boxWidth),
floatValueForLength(values.at(i + 1), boxHeight));
(*vertices)[i / 2] = physicalPointToLogical(vertex, logicalBoxSize.height(), writingMode);
}
shape = createPolygonShape(WTF::move(vertices), polygon.windRule());
break;
}
case BasicShape::BasicShapeInsetType: {
const BasicShapeInset& inset = *static_cast<const BasicShapeInset*>(basicShape);
float left = floatValueForLength(inset.left(), boxWidth);
float top = floatValueForLength(inset.top(), boxHeight);
FloatRect rect(left,
top,
std::max<float>(boxWidth - left - floatValueForLength(inset.right(), boxWidth), 0),
std::max<float>(boxHeight - top - floatValueForLength(inset.bottom(), boxHeight), 0));
FloatRect logicalRect = physicalRectToLogical(rect, logicalBoxSize.height(), writingMode);
FloatSize boxSize(boxWidth, boxHeight);
FloatSize topLeftRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.topLeftRadius(), boxSize), writingMode);
FloatSize topRightRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.topRightRadius(), boxSize), writingMode);
FloatSize bottomLeftRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.bottomLeftRadius(), boxSize), writingMode);
FloatSize bottomRightRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.bottomRightRadius(), boxSize), writingMode);
FloatRoundedRect::Radii cornerRadii(topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius);
cornerRadii.scale(calcBorderRadiiConstraintScaleFor(logicalRect, cornerRadii));
shape = createInsetShape(FloatRoundedRect(logicalRect, cornerRadii));
break;
}
default:
ASSERT_NOT_REACHED();
}
shape->m_writingMode = writingMode;
shape->m_margin = margin;
return shape;
}
void RenderTextControlSingleLine::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
// FIXME: We should remove the height-related hacks in layout() and
// styleDidChange(). We need them because
// - Center the inner elements vertically if the input height is taller than
// the intrinsic height of the inner elements.
// - Shrink the inner elment heights if the input height is samller than the
// intrinsic heights of the inner elements.
// We don't honor paddings and borders for textfields without decorations
// and type=search if the text height is taller than the contentHeight()
// because of compability.
RenderTextControlInnerBlock* innerTextRenderer = innerTextElement()->renderer();
RenderBox* innerBlockRenderer = innerBlockElement() ? innerBlockElement()->renderBox() : 0;
// To ensure consistency between layouts, we need to reset any conditionally overriden height.
if (innerTextRenderer && !innerTextRenderer->style().logicalHeight().isAuto()) {
innerTextRenderer->style().setLogicalHeight(Length(Auto));
setNeedsLayoutOnAncestors(innerTextRenderer, this);
}
if (innerBlockRenderer && !innerBlockRenderer->style().logicalHeight().isAuto()) {
innerBlockRenderer->style().setLogicalHeight(Length(Auto));
setNeedsLayoutOnAncestors(innerBlockRenderer, this);
}
RenderBlockFlow::layoutBlock(false);
HTMLElement* container = containerElement();
RenderBox* containerRenderer = container ? container->renderBox() : 0;
// Set the text block height
LayoutUnit desiredLogicalHeight = textBlockLogicalHeight();
LayoutUnit logicalHeightLimit = computeLogicalHeightLimit();
if (innerTextRenderer && innerTextRenderer->logicalHeight() > logicalHeightLimit) {
if (desiredLogicalHeight != innerTextRenderer->logicalHeight())
setNeedsLayout(MarkOnlyThis);
m_desiredInnerTextLogicalHeight = desiredLogicalHeight;
innerTextRenderer->style().setLogicalHeight(Length(desiredLogicalHeight, Fixed));
innerTextRenderer->setNeedsLayout(MarkOnlyThis);
if (innerBlockRenderer) {
innerBlockRenderer->style().setLogicalHeight(Length(desiredLogicalHeight, Fixed));
innerBlockRenderer->setNeedsLayout(MarkOnlyThis);
}
}
// The container might be taller because of decoration elements.
if (containerRenderer) {
containerRenderer->layoutIfNeeded();
LayoutUnit containerLogicalHeight = containerRenderer->logicalHeight();
if (containerLogicalHeight > logicalHeightLimit) {
containerRenderer->style().setLogicalHeight(Length(logicalHeightLimit, Fixed));
setNeedsLayout(MarkOnlyThis);
} else if (containerRenderer->logicalHeight() < contentLogicalHeight()) {
containerRenderer->style().setLogicalHeight(Length(contentLogicalHeight(), Fixed));
setNeedsLayout(MarkOnlyThis);
} else
containerRenderer->style().setLogicalHeight(Length(containerLogicalHeight, Fixed));
}
// If we need another layout pass, we have changed one of children's height so we need to relayout them.
if (needsLayout())
RenderBlockFlow::layoutBlock(true);
// Center the child block in the block progression direction (vertical centering for horizontal text fields).
if (!container && innerTextRenderer && innerTextRenderer->height() != contentLogicalHeight())
centerRenderer(*innerTextRenderer);
else
centerContainerIfNeeded(containerRenderer);
// Ignores the paddings for the inner spin button.
if (RenderBox* innerSpinBox = innerSpinButtonElement() ? innerSpinButtonElement()->renderBox() : 0) {
RenderBox* parentBox = innerSpinBox->parentBox();
if (containerRenderer && !containerRenderer->style().isLeftToRightDirection())
innerSpinBox->setLogicalLocation(LayoutPoint(-paddingLogicalLeft(), -paddingBefore()));
else
innerSpinBox->setLogicalLocation(LayoutPoint(parentBox->logicalWidth() - innerSpinBox->logicalWidth() + paddingLogicalRight(), -paddingBefore()));
innerSpinBox->setLogicalHeight(logicalHeight() - borderBefore() - borderAfter());
}
HTMLElement* placeholderElement = inputElement().placeholderElement();
if (RenderBox* placeholderBox = placeholderElement ? placeholderElement->renderBox() : 0) {
LayoutSize innerTextSize;
if (innerTextRenderer)
innerTextSize = innerTextRenderer->size();
placeholderBox->style().setWidth(Length(innerTextSize.width() - placeholderBox->horizontalBorderAndPaddingExtent(), Fixed));
placeholderBox->style().setHeight(Length(innerTextSize.height() - placeholderBox->verticalBorderAndPaddingExtent(), Fixed));
bool neededLayout = placeholderBox->needsLayout();
bool placeholderBoxHadLayout = placeholderBox->everHadLayout();
placeholderBox->layoutIfNeeded();
LayoutPoint textOffset;
if (innerTextRenderer)
textOffset = innerTextRenderer->location();
if (innerBlockElement() && innerBlockElement()->renderBox())
textOffset += toLayoutSize(innerBlockElement()->renderBox()->location());
if (containerRenderer)
textOffset += toLayoutSize(containerRenderer->location());
placeholderBox->setLocation(textOffset);
if (!placeholderBoxHadLayout && placeholderBox->checkForRepaintDuringLayout()) {
// This assumes a shadow tree without floats. If floats are added, the
// logic should be shared with RenderBlock::layoutBlockChild.
placeholderBox->repaint();
}
// The placeholder gets layout last, after the parent text control and its other children,
// so in order to get the correct overflow from the placeholder we need to recompute it now.
if (neededLayout)
computeOverflow(clientLogicalBottom());
}
#if PLATFORM(IOS)
// FIXME: We should not be adjusting styles during layout. <rdar://problem/7675493>
if (inputElement().isSearchField())
RenderThemeIOS::adjustRoundBorderRadius(style(), *this);
#endif
}
PassOwnPtr<Shape> Shape::createShape(const BasicShape* basicShape, const LayoutSize& logicalBoxSize, WritingMode writingMode, Length margin, Length padding)
{
ASSERT(basicShape);
bool horizontalWritingMode = isHorizontalWritingMode(writingMode);
float boxWidth = horizontalWritingMode ? logicalBoxSize.width() : logicalBoxSize.height();
float boxHeight = horizontalWritingMode ? logicalBoxSize.height() : logicalBoxSize.width();
OwnPtr<Shape> shape;
switch (basicShape->type()) {
case BasicShape::BasicShapeRectangleType: {
const BasicShapeRectangle* rectangle = static_cast<const BasicShapeRectangle*>(basicShape);
FloatRect bounds(
floatValueForLength(rectangle->x(), boxWidth),
floatValueForLength(rectangle->y(), boxHeight),
floatValueForLength(rectangle->width(), boxWidth),
floatValueForLength(rectangle->height(), boxHeight));
FloatSize cornerRadii(
floatValueForLength(rectangle->cornerRadiusX(), boxWidth),
floatValueForLength(rectangle->cornerRadiusY(), boxHeight));
ensureRadiiDoNotOverlap(bounds, cornerRadii);
FloatRect logicalBounds = physicalRectToLogical(bounds, logicalBoxSize.height(), writingMode);
shape = createRectangleShape(logicalBounds, physicalSizeToLogical(cornerRadii, writingMode));
break;
}
case BasicShape::BasicShapeCircleType: {
const BasicShapeCircle* circle = static_cast<const BasicShapeCircle*>(basicShape);
float centerX = floatValueForLength(circle->centerX(), boxWidth);
float centerY = floatValueForLength(circle->centerY(), boxHeight);
float radius = floatValueForLength(circle->radius(), sqrtf((boxWidth * boxWidth + boxHeight * boxHeight) / 2));
FloatPoint logicalCenter = physicalPointToLogical(FloatPoint(centerX, centerY), logicalBoxSize.height(), writingMode);
shape = createShapeCircle(logicalCenter, radius);
break;
}
case BasicShape::BasicShapeEllipseType: {
const BasicShapeEllipse* ellipse = static_cast<const BasicShapeEllipse*>(basicShape);
float centerX = floatValueForLength(ellipse->centerX(), boxWidth);
float centerY = floatValueForLength(ellipse->centerY(), boxHeight);
float radiusX = floatValueForLength(ellipse->radiusX(), boxWidth);
float radiusY = floatValueForLength(ellipse->radiusY(), boxHeight);
FloatPoint logicalCenter = physicalPointToLogical(FloatPoint(centerX, centerY), logicalBoxSize.height(), writingMode);
FloatSize logicalRadii = physicalSizeToLogical(FloatSize(radiusX, radiusY), writingMode);
shape = createShapeEllipse(logicalCenter, logicalRadii);
break;
}
case BasicShape::BasicShapePolygonType: {
const BasicShapePolygon* polygon = static_cast<const BasicShapePolygon*>(basicShape);
const Vector<Length>& values = polygon->values();
size_t valuesSize = values.size();
ASSERT(!(valuesSize % 2));
OwnPtr<Vector<FloatPoint> > vertices = adoptPtr(new Vector<FloatPoint>(valuesSize / 2));
for (unsigned i = 0; i < valuesSize; i += 2) {
FloatPoint vertex(
floatValueForLength(values.at(i), boxWidth),
floatValueForLength(values.at(i + 1), boxHeight));
(*vertices)[i / 2] = physicalPointToLogical(vertex, logicalBoxSize.height(), writingMode);
}
shape = createPolygonShape(vertices.release(), polygon->windRule());
break;
}
case BasicShape::BasicShapeInsetRectangleType: {
const BasicShapeInsetRectangle* rectangle = static_cast<const BasicShapeInsetRectangle*>(basicShape);
float left = floatValueForLength(rectangle->left(), boxWidth);
float top = floatValueForLength(rectangle->top(), boxHeight);
FloatRect bounds(
left,
top,
boxWidth - left - floatValueForLength(rectangle->right(), boxWidth),
boxHeight - top - floatValueForLength(rectangle->bottom(), boxHeight));
FloatSize cornerRadii(
floatValueForLength(rectangle->cornerRadiusX(), boxWidth),
floatValueForLength(rectangle->cornerRadiusY(), boxHeight));
ensureRadiiDoNotOverlap(bounds, cornerRadii);
FloatRect logicalBounds = physicalRectToLogical(bounds, logicalBoxSize.height(), writingMode);
shape = createRectangleShape(logicalBounds, physicalSizeToLogical(cornerRadii, writingMode));
break;
}
default:
ASSERT_NOT_REACHED();
}
shape->m_writingMode = writingMode;
shape->m_margin = floatValueForLength(margin, 0);
shape->m_padding = floatValueForLength(padding, 0);
return shape.release();
}
void RenderEmbeddedObject::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
ASSERT(needsLayout());
LayoutSize oldSize = contentBoxRect().size();
updateLogicalWidth();
updateLogicalHeight();
RenderPart::layout();
m_overflow.clear();
addVisualEffectOverflow();
updateLayerTransform();
bool wasMissingWidget = false;
if (!widget() && frameView() && canHaveWidget()) {
wasMissingWidget = true;
frameView()->addWidgetToUpdate(this);
}
setNeedsLayout(false);
LayoutSize newSize = contentBoxRect().size();
if (!wasMissingWidget && newSize.width() >= oldSize.width() && newSize.height() >= oldSize.height()) {
Element* element = toElement(node());
if (element && element->isPluginElement() && toHTMLPlugInElement(element)->isPlugInImageElement()) {
HTMLPlugInImageElement* plugInImageElement = toHTMLPlugInImageElement(element);
if (plugInImageElement->displayState() > HTMLPlugInElement::DisplayingSnapshot && plugInImageElement->snapshotDecision() == HTMLPlugInImageElement::MaySnapshotWhenResized && document()->view()) {
plugInImageElement->setNeedsCheckForSizeChange();
document()->view()->addWidgetToUpdate(this);
}
}
}
if (!canHaveChildren())
return;
// This code copied from RenderMedia::layout().
RenderObject* child = m_children.firstChild();
if (!child)
return;
RenderBox* childBox = toRenderBox(child);
if (!childBox)
return;
if (newSize == oldSize && !childBox->needsLayout())
return;
// When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
// instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
// and this method will be called many times per second during playback, use a LayoutStateMaintainer:
LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
childBox->setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));
childBox->style()->setHeight(Length(newSize.height(), Fixed));
childBox->style()->setWidth(Length(newSize.width(), Fixed));
childBox->setNeedsLayout(true, MarkOnlyThis);
childBox->layout();
setChildNeedsLayout(false);
statePusher.pop();
}
void ImagePainter::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
LayoutUnit cWidth = m_renderImage.contentWidth();
LayoutUnit cHeight = m_renderImage.contentHeight();
GraphicsContext* context = paintInfo.context;
if (!m_renderImage.imageResource()->hasImage() || m_renderImage.imageResource()->errorOccurred()) {
if (paintInfo.phase == PaintPhaseSelection)
return;
if (cWidth > 2 && cHeight > 2) {
const int borderWidth = 1;
LayoutUnit leftBorder = m_renderImage.borderLeft();
LayoutUnit topBorder = m_renderImage.borderTop();
LayoutUnit leftPad = m_renderImage.paddingLeft();
LayoutUnit topPad = m_renderImage.paddingTop();
// Draw an outline rect where the image should be.
IntRect paintRect = pixelSnappedIntRect(LayoutRect(paintOffset.x() + leftBorder + leftPad, paintOffset.y() + topBorder + topPad, cWidth, cHeight));
DrawingRecorder recorder(context, &m_renderImage, paintInfo.phase, paintRect);
context->setStrokeStyle(SolidStroke);
context->setStrokeColor(Color::lightGray);
context->setFillColor(Color::transparent);
context->drawRect(paintRect);
bool errorPictureDrawn = false;
LayoutSize imageOffset;
// When calculating the usable dimensions, exclude the pixels of
// the ouline rect so the error image/alt text doesn't draw on it.
LayoutUnit usableWidth = cWidth - 2 * borderWidth;
LayoutUnit usableHeight = cHeight - 2 * borderWidth;
RefPtr<Image> image = m_renderImage.imageResource()->image();
if (m_renderImage.imageResource()->errorOccurred() && !image->isNull() && usableWidth >= image->width() && usableHeight >= image->height()) {
float deviceScaleFactor = blink::deviceScaleFactor(m_renderImage.frame());
// Call brokenImage() explicitly to ensure we get the broken image icon at the appropriate resolution.
pair<Image*, float> brokenImageAndImageScaleFactor = ImageResource::brokenImage(deviceScaleFactor);
image = brokenImageAndImageScaleFactor.first;
IntSize imageSize = image->size();
imageSize.scale(1 / brokenImageAndImageScaleFactor.second);
// Center the error image, accounting for border and padding.
LayoutUnit centerX = (usableWidth - imageSize.width()) / 2;
if (centerX < 0)
centerX = 0;
LayoutUnit centerY = (usableHeight - imageSize.height()) / 2;
if (centerY < 0)
centerY = 0;
imageOffset = LayoutSize(leftBorder + leftPad + centerX + borderWidth, topBorder + topPad + centerY + borderWidth);
context->drawImage(image.get(), pixelSnappedIntRect(LayoutRect(paintOffset + imageOffset, imageSize)), CompositeSourceOver, m_renderImage.shouldRespectImageOrientation());
errorPictureDrawn = true;
}
if (!m_renderImage.altText().isEmpty()) {
const Font& font = m_renderImage.style()->font();
const FontMetrics& fontMetrics = font.fontMetrics();
LayoutUnit ascent = fontMetrics.ascent();
LayoutPoint textRectOrigin = paintOffset;
textRectOrigin.move(leftBorder + leftPad + (RenderImage::paddingWidth / 2) - borderWidth, topBorder + topPad + (RenderImage::paddingHeight / 2) - borderWidth);
LayoutPoint textOrigin(textRectOrigin.x(), textRectOrigin.y() + ascent);
// Only draw the alt text if it'll fit within the content box,
// and only if it fits above the error image.
TextRun textRun = constructTextRun(&m_renderImage, font, m_renderImage.altText(), m_renderImage.style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags | RespectDirection);
float textWidth = font.width(textRun);
TextRunPaintInfo textRunPaintInfo(textRun);
textRunPaintInfo.bounds = FloatRect(textRectOrigin, FloatSize(textWidth, fontMetrics.height()));
context->setFillColor(m_renderImage.resolveColor(CSSPropertyColor));
if (textRun.direction() == RTL) {
int availableWidth = cWidth - static_cast<int>(RenderImage::paddingWidth);
textOrigin.move(availableWidth - ceilf(textWidth), 0);
}
if (errorPictureDrawn) {
if (usableWidth >= textWidth && fontMetrics.height() <= imageOffset.height())
context->drawBidiText(font, textRunPaintInfo, textOrigin);
} else if (usableWidth >= textWidth && usableHeight >= fontMetrics.height()) {
context->drawBidiText(font, textRunPaintInfo, textOrigin);
}
}
}
} else if (m_renderImage.imageResource()->hasImage() && cWidth > 0 && cHeight > 0) {
LayoutRect contentRect = m_renderImage.contentBoxRect();
contentRect.moveBy(paintOffset);
LayoutRect paintRect = m_renderImage.replacedContentRect();
paintRect.moveBy(paintOffset);
DrawingRecorder recorder(context, &m_renderImage, paintInfo.phase, contentRect);
bool clip = !contentRect.contains(paintRect);
if (clip) {
context->save();
context->clip(contentRect);
}
paintIntoRect(context, paintRect);
if (clip)
context->restore();
}
}
void AsyncScrollingCoordinator::updateScrollPositionAfterAsyncScroll(ScrollingNodeID scrollingNodeID, const FloatPoint& scrollPosition, bool programmaticScroll, SetOrSyncScrollingLayerPosition scrollingLayerPositionAction)
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameViewPtr = frameViewForScrollingNode(scrollingNodeID);
if (!frameViewPtr)
return;
FrameView& frameView = *frameViewPtr;
if (scrollingNodeID == frameView.scrollLayerID()) {
bool oldProgrammaticScroll = frameView.inProgrammaticScroll();
frameView.setInProgrammaticScroll(programmaticScroll);
frameView.setConstrainsScrollingToContentEdge(false);
frameView.notifyScrollPositionChanged(roundedIntPoint(scrollPosition));
frameView.setConstrainsScrollingToContentEdge(true);
frameView.setInProgrammaticScroll(oldProgrammaticScroll);
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
GraphicsLayer* counterScrollingLayer = counterScrollingLayerForFrameView(frameView);
GraphicsLayer* insetClipLayer = insetClipLayerForFrameView(frameView);
GraphicsLayer* contentShadowLayer = contentShadowLayerForFrameView(frameView);
GraphicsLayer* scrolledContentsLayer = rootContentLayerForFrameView(frameView);
GraphicsLayer* headerLayer = headerLayerForFrameView(frameView);
GraphicsLayer* footerLayer = footerLayerForFrameView(frameView);
LayoutSize scrollOffsetForFixed = frameView.scrollOffsetForFixedPosition();
float topContentInset = frameView.topContentInset();
FloatPoint positionForInsetClipLayer = FloatPoint(0, FrameView::yPositionForInsetClipLayer(scrollPosition, topContentInset));
FloatPoint positionForContentsLayer = FloatPoint(scrolledContentsLayer->position().x(),
FrameView::yPositionForRootContentLayer(scrollPosition, topContentInset, frameView.headerHeight()));
FloatPoint positionForHeaderLayer = FloatPoint(scrollOffsetForFixed.width(), FrameView::yPositionForHeaderLayer(scrollPosition, topContentInset));
FloatPoint positionForFooterLayer = FloatPoint(scrollOffsetForFixed.width(),
FrameView::yPositionForFooterLayer(scrollPosition, topContentInset, frameView.totalContentsSize().height(), frameView.footerHeight()));
if (programmaticScroll || scrollingLayerPositionAction == SetScrollingLayerPosition) {
scrollLayer->setPosition(-frameView.scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->setPosition(toLayoutPoint(scrollOffsetForFixed));
if (insetClipLayer)
insetClipLayer->setPosition(positionForInsetClipLayer);
if (contentShadowLayer)
contentShadowLayer->setPosition(positionForContentsLayer);
if (scrolledContentsLayer)
scrolledContentsLayer->setPosition(positionForContentsLayer);
if (headerLayer)
headerLayer->setPosition(positionForHeaderLayer);
if (footerLayer)
footerLayer->setPosition(positionForFooterLayer);
} else {
scrollLayer->syncPosition(-frameView.scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->syncPosition(toLayoutPoint(scrollOffsetForFixed));
if (insetClipLayer)
insetClipLayer->syncPosition(positionForInsetClipLayer);
if (contentShadowLayer)
contentShadowLayer->syncPosition(positionForContentsLayer);
if (scrolledContentsLayer)
scrolledContentsLayer->syncPosition(positionForContentsLayer);
if (headerLayer)
headerLayer->syncPosition(positionForHeaderLayer);
if (footerLayer)
footerLayer->syncPosition(positionForFooterLayer);
LayoutRect viewportRect = frameView.viewportConstrainedVisibleContentRect();
syncChildPositions(viewportRect);
}
}
#if PLATFORM(COCOA)
if (m_page->expectsWheelEventTriggers()) {
frameView.scrollAnimator().setWheelEventTestTrigger(m_page->testTrigger());
if (const auto& trigger = m_page->testTrigger())
trigger->removeTestDeferralForReason(reinterpret_cast<WheelEventTestTrigger::ScrollableAreaIdentifier>(scrollingNodeID), WheelEventTestTrigger::ScrollingThreadSyncNeeded);
}
#endif
return;
}
// Overflow-scroll area.
if (ScrollableArea* scrollableArea = frameView.scrollableAreaForScrollLayerID(scrollingNodeID)) {
scrollableArea->setIsUserScroll(scrollingLayerPositionAction == SyncScrollingLayerPosition);
scrollableArea->scrollToOffsetWithoutAnimation(scrollPosition);
scrollableArea->setIsUserScroll(false);
if (scrollingLayerPositionAction == SetScrollingLayerPosition)
m_page->editorClient().overflowScrollPositionChanged();
#if PLATFORM(COCOA)
if (m_page->expectsWheelEventTriggers()) {
frameView.scrollAnimator().setWheelEventTestTrigger(m_page->testTrigger());
if (const auto& trigger = m_page->testTrigger())
trigger->removeTestDeferralForReason(reinterpret_cast<WheelEventTestTrigger::ScrollableAreaIdentifier>(scrollingNodeID), WheelEventTestTrigger::ScrollingThreadSyncNeeded);
}
#endif
}
}
PassOwnPtr<Shape> Shape::createShape(const BasicShape* basicShape, const LayoutSize& logicalBoxSize, WritingMode writingMode, float margin)
{
ASSERT(basicShape);
bool horizontalWritingMode = isHorizontalWritingMode(writingMode);
float boxWidth = horizontalWritingMode ? logicalBoxSize.width().toFloat() : logicalBoxSize.height().toFloat();
float boxHeight = horizontalWritingMode ? logicalBoxSize.height().toFloat() : logicalBoxSize.width().toFloat();
OwnPtr<Shape> shape;
switch (basicShape->type()) {
case BasicShape::BasicShapeCircleType: {
const BasicShapeCircle* circle = toBasicShapeCircle(basicShape);
FloatPoint center = floatPointForCenterCoordinate(circle->centerX(), circle->centerY(), FloatSize(boxWidth, boxHeight));
float radius = circle->floatValueForRadiusInBox(FloatSize(boxWidth, boxHeight));
FloatPoint logicalCenter = physicalPointToLogical(center, logicalBoxSize.height().toFloat(), writingMode);
shape = createCircleShape(logicalCenter, radius);
break;
}
case BasicShape::BasicShapeEllipseType: {
const BasicShapeEllipse* ellipse = toBasicShapeEllipse(basicShape);
FloatPoint center = floatPointForCenterCoordinate(ellipse->centerX(), ellipse->centerY(), FloatSize(boxWidth, boxHeight));
float radiusX = ellipse->floatValueForRadiusInBox(ellipse->radiusX(), center.x(), boxWidth);
float radiusY = ellipse->floatValueForRadiusInBox(ellipse->radiusY(), center.y(), boxHeight);
FloatPoint logicalCenter = physicalPointToLogical(center, logicalBoxSize.height().toFloat(), writingMode);
shape = createEllipseShape(logicalCenter, FloatSize(radiusX, radiusY));
break;
}
case BasicShape::BasicShapePolygonType: {
const BasicShapePolygon* polygon = toBasicShapePolygon(basicShape);
const Vector<Length>& values = polygon->values();
size_t valuesSize = values.size();
ASSERT(!(valuesSize % 2));
OwnPtr<Vector<FloatPoint>> vertices = adoptPtr(new Vector<FloatPoint>(valuesSize / 2));
for (unsigned i = 0; i < valuesSize; i += 2) {
FloatPoint vertex(
floatValueForLength(values.at(i), boxWidth),
floatValueForLength(values.at(i + 1), boxHeight));
(*vertices)[i / 2] = physicalPointToLogical(vertex, logicalBoxSize.height().toFloat(), writingMode);
}
shape = createPolygonShape(vertices.release(), polygon->windRule());
break;
}
case BasicShape::BasicShapeInsetType: {
const BasicShapeInset& inset = *toBasicShapeInset(basicShape);
float left = floatValueForLength(inset.left(), boxWidth);
float top = floatValueForLength(inset.top(), boxHeight);
float right = floatValueForLength(inset.right(), boxWidth);
float bottom = floatValueForLength(inset.bottom(), boxHeight);
FloatRect rect(left, top, std::max<float>(boxWidth - left - right, 0), std::max<float>(boxHeight - top - bottom, 0));
FloatRect logicalRect = physicalRectToLogical(rect, logicalBoxSize.height().toFloat(), writingMode);
FloatSize boxSize(boxWidth, boxHeight);
FloatSize topLeftRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.topLeftRadius(), boxSize), writingMode);
FloatSize topRightRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.topRightRadius(), boxSize), writingMode);
FloatSize bottomLeftRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.bottomLeftRadius(), boxSize), writingMode);
FloatSize bottomRightRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.bottomRightRadius(), boxSize), writingMode);
FloatRoundedRect::Radii cornerRadii(topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius);
FloatRoundedRect finalRect(logicalRect, cornerRadii);
finalRect.constrainRadii();
shape = createInsetShape(finalRect);
break;
}
default:
ASSERT_NOT_REACHED();
}
shape->m_writingMode = writingMode;
shape->m_margin = margin;
return shape.release();
}
void RenderTextControlSingleLine::layout()
{
SubtreeLayoutScope layoutScope(this);
// FIXME: We should remove the height-related hacks in layout() and
// styleDidChange(). We need them because
// - Center the inner elements vertically if the input height is taller than
// the intrinsic height of the inner elements.
// - Shrink the inner elment heights if the input height is samller than the
// intrinsic heights of the inner elements.
// We don't honor paddings and borders for textfields without decorations
// and type=search if the text height is taller than the contentHeight()
// because of compability.
RenderBox* innerTextRenderer = innerTextElement()->renderBox();
RenderBox* viewPortRenderer = editingViewPortElement() ? editingViewPortElement()->renderBox() : 0;
// To ensure consistency between layouts, we need to reset any conditionally overriden height.
if (innerTextRenderer && !innerTextRenderer->style()->logicalHeight().isAuto()) {
innerTextRenderer->style()->setLogicalHeight(Length(Auto));
layoutScope.setNeedsLayout(innerTextRenderer);
}
if (viewPortRenderer && !viewPortRenderer->style()->logicalHeight().isAuto()) {
viewPortRenderer->style()->setLogicalHeight(Length(Auto));
layoutScope.setNeedsLayout(viewPortRenderer);
}
RenderBlockFlow::layoutBlock(false);
Element* container = containerElement();
RenderBox* containerRenderer = container ? container->renderBox() : 0;
// Set the text block height
LayoutUnit desiredLogicalHeight = textBlockLogicalHeight();
LayoutUnit logicalHeightLimit = computeLogicalHeightLimit();
if (innerTextRenderer && innerTextRenderer->logicalHeight() > logicalHeightLimit) {
if (desiredLogicalHeight != innerTextRenderer->logicalHeight())
layoutScope.setNeedsLayout(this);
m_desiredInnerTextLogicalHeight = desiredLogicalHeight;
innerTextRenderer->style()->setLogicalHeight(Length(desiredLogicalHeight, Fixed));
layoutScope.setNeedsLayout(innerTextRenderer);
if (viewPortRenderer) {
viewPortRenderer->style()->setLogicalHeight(Length(desiredLogicalHeight, Fixed));
layoutScope.setNeedsLayout(viewPortRenderer);
}
}
// The container might be taller because of decoration elements.
if (containerRenderer) {
containerRenderer->layoutIfNeeded();
LayoutUnit containerLogicalHeight = containerRenderer->logicalHeight();
if (containerLogicalHeight > logicalHeightLimit) {
containerRenderer->style()->setLogicalHeight(Length(logicalHeightLimit, Fixed));
layoutScope.setNeedsLayout(this);
} else if (containerRenderer->logicalHeight() < contentLogicalHeight()) {
containerRenderer->style()->setLogicalHeight(Length(contentLogicalHeight(), Fixed));
layoutScope.setNeedsLayout(this);
} else
containerRenderer->style()->setLogicalHeight(Length(containerLogicalHeight, Fixed));
}
// If we need another layout pass, we have changed one of children's height so we need to relayout them.
if (needsLayout())
RenderBlockFlow::layoutBlock(true);
// Center the child block in the block progression direction (vertical centering for horizontal text fields).
if (!container && innerTextRenderer && innerTextRenderer->height() != contentLogicalHeight()) {
LayoutUnit logicalHeightDiff = innerTextRenderer->logicalHeight() - contentLogicalHeight();
innerTextRenderer->setLogicalTop(innerTextRenderer->logicalTop() - (logicalHeightDiff / 2 + layoutMod(logicalHeightDiff, 2)));
} else
centerContainerIfNeeded(containerRenderer);
HTMLElement* placeholderElement = inputElement()->placeholderElement();
if (RenderBox* placeholderBox = placeholderElement ? placeholderElement->renderBox() : 0) {
LayoutSize innerTextSize;
if (innerTextRenderer)
innerTextSize = innerTextRenderer->size();
placeholderBox->style()->setWidth(Length(innerTextSize.width() - placeholderBox->borderAndPaddingWidth(), Fixed));
placeholderBox->style()->setHeight(Length(innerTextSize.height() - placeholderBox->borderAndPaddingHeight(), Fixed));
bool neededLayout = placeholderBox->needsLayout();
bool placeholderBoxHadLayout = placeholderBox->everHadLayout();
placeholderBox->layoutIfNeeded();
LayoutPoint textOffset;
if (innerTextRenderer)
textOffset = innerTextRenderer->location();
if (editingViewPortElement() && editingViewPortElement()->renderBox())
textOffset += toLayoutSize(editingViewPortElement()->renderBox()->location());
if (containerRenderer)
textOffset += toLayoutSize(containerRenderer->location());
placeholderBox->setLocation(textOffset);
if (!placeholderBoxHadLayout && placeholderBox->checkForRepaintDuringLayout()) {
// This assumes a shadow tree without floats. If floats are added, the
// logic should be shared with RenderBlockFlow::layoutBlockChild.
placeholderBox->repaint();
}
// The placeholder gets layout last, after the parent text control and its other children,
// so in order to get the correct overflow from the placeholder we need to recompute it now.
if (neededLayout)
computeOverflow(clientLogicalBottom());
}
}
void LayoutMedia::layout() {
LayoutSize oldSize = contentBoxRect().size();
LayoutImage::layout();
LayoutRect newRect = contentBoxRect();
LayoutState state(*this);
Optional<LayoutUnit> newPanelWidth;
// Iterate the children in reverse order so that the media controls are laid
// out before the text track container. This is to ensure that the text
// track rendering has an up-to-date position of the media controls for
// overlap checking, see LayoutVTTCue.
#if ENABLE(ASSERT)
bool seenTextTrackContainer = false;
#endif
for (LayoutObject* child = m_children.lastChild(); child;
child = child->previousSibling()) {
#if ENABLE(ASSERT)
if (child->node()->isMediaControls())
ASSERT(!seenTextTrackContainer);
else if (child->node()->isTextTrackContainer())
seenTextTrackContainer = true;
else
ASSERT_NOT_REACHED();
#endif
// TODO(mlamouri): we miss some layouts because needsLayout returns false in
// some cases where we want to change the width of the controls because the
// visible viewport has changed for example.
if (newRect.size() == oldSize && !child->needsLayout())
continue;
LayoutUnit width = newRect.width();
if (child->node()->isMediaControls()) {
width = computePanelWidth(newRect);
if (width != oldSize.width())
newPanelWidth = width;
}
LayoutBox* layoutBox = toLayoutBox(child);
layoutBox->setLocation(newRect.location());
// TODO(foolip): Remove the mutableStyleRef() and depend on CSS
// width/height: inherit to match the media element size.
layoutBox->mutableStyleRef().setHeight(Length(newRect.height(), Fixed));
layoutBox->mutableStyleRef().setWidth(Length(width, Fixed));
layoutBox->forceLayout();
}
clearNeedsLayout();
// Notify our MediaControls that a layout has happened.
if (mediaElement() && mediaElement()->mediaControls() &&
newPanelWidth.has_value()) {
mediaElement()->mediaControls()->notifyPanelWidthChanged(
newPanelWidth.value());
}
}
void AsyncScrollingCoordinator::updateScrollPositionAfterAsyncScroll(ScrollingNodeID scrollingNodeID, const FloatPoint& scrollPosition, bool programmaticScroll, SetOrSyncScrollingLayerPosition scrollingLayerPositionAction)
{
ASSERT(isMainThread());
if (!m_page)
return;
FrameView* frameView = m_page->mainFrame().view();
if (!frameView)
return;
// Main frame.
if (scrollingNodeID == frameView->scrollLayerID()) {
bool oldProgrammaticScroll = frameView->inProgrammaticScroll();
frameView->setInProgrammaticScroll(programmaticScroll);
frameView->setConstrainsScrollingToContentEdge(false);
frameView->notifyScrollPositionChanged(roundedIntPoint(scrollPosition));
frameView->setConstrainsScrollingToContentEdge(true);
frameView->setInProgrammaticScroll(oldProgrammaticScroll);
if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
GraphicsLayer* counterScrollingLayer = counterScrollingLayerForFrameView(frameView);
GraphicsLayer* insetClipLayer = insetClipLayerForFrameView(frameView);
GraphicsLayer* contentShadowLayer = contentShadowLayerForFrameView(frameView);
GraphicsLayer* scrolledContentsLayer = rootContentLayerForFrameView(frameView);
GraphicsLayer* headerLayer = headerLayerForFrameView(frameView);
GraphicsLayer* footerLayer = footerLayerForFrameView(frameView);
LayoutSize scrollOffsetForFixed = frameView->scrollOffsetForFixedPosition();
float topContentInset = frameView->topContentInset();
FloatPoint positionForInsetClipLayer = FloatPoint(0, FrameView::yPositionForInsetClipLayer(scrollPosition, topContentInset));
FloatPoint positionForContentsLayer = FloatPoint(scrolledContentsLayer->position().x(),
FrameView::yPositionForRootContentLayer(scrollPosition, topContentInset, frameView->headerHeight()));
FloatPoint positionForHeaderLayer = FloatPoint(scrollOffsetForFixed.width(), FrameView::yPositionForHeaderLayer(scrollPosition, topContentInset));
FloatPoint positionForFooterLayer = FloatPoint(scrollOffsetForFixed.width(),
FrameView::yPositionForFooterLayer(scrollPosition, topContentInset, frameView->totalContentsSize().height(), frameView->footerHeight()));
if (programmaticScroll || scrollingLayerPositionAction == SetScrollingLayerPosition) {
scrollLayer->setPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->setPosition(toLayoutPoint(scrollOffsetForFixed));
if (insetClipLayer)
insetClipLayer->setPosition(positionForInsetClipLayer);
if (contentShadowLayer)
contentShadowLayer->setPosition(positionForContentsLayer);
if (scrolledContentsLayer)
scrolledContentsLayer->setPosition(positionForContentsLayer);
if (headerLayer)
headerLayer->setPosition(positionForHeaderLayer);
if (footerLayer)
footerLayer->setPosition(positionForFooterLayer);
} else {
scrollLayer->syncPosition(-frameView->scrollPosition());
if (counterScrollingLayer)
counterScrollingLayer->syncPosition(toLayoutPoint(scrollOffsetForFixed));
if (insetClipLayer)
insetClipLayer->syncPosition(positionForInsetClipLayer);
if (contentShadowLayer)
contentShadowLayer->syncPosition(positionForContentsLayer);
if (scrolledContentsLayer)
scrolledContentsLayer->syncPosition(positionForContentsLayer);
if (headerLayer)
headerLayer->syncPosition(positionForHeaderLayer);
if (footerLayer)
footerLayer->syncPosition(positionForFooterLayer);
LayoutRect viewportRect = frameView->viewportConstrainedVisibleContentRect();
syncChildPositions(viewportRect);
}
}
return;
}
// Overflow-scroll area.
if (ScrollableArea* scrollableArea = frameView->scrollableAreaForScrollLayerID(scrollingNodeID)) {
scrollableArea->setIsUserScroll(scrollingLayerPositionAction == SyncScrollingLayerPosition);
scrollableArea->scrollToOffsetWithoutAnimation(scrollPosition);
scrollableArea->setIsUserScroll(false);
}
}