IntRect RenderVideo::videoBox() const
{
if (m_cachedImageSize.isEmpty() && videoElement()->shouldDisplayPosterImage())
return IntRect();
LayoutSize elementSize;
if (videoElement()->shouldDisplayPosterImage())
elementSize = m_cachedImageSize;
else
elementSize = intrinsicSize();
IntRect contentRect = pixelSnappedIntRect(contentBoxRect());
if (elementSize.isEmpty() || contentRect.isEmpty())
return IntRect();
LayoutRect renderBox = contentRect;
LayoutUnit ratio = renderBox.width() * elementSize.height() - renderBox.height() * elementSize.width();
if (ratio > 0) {
LayoutUnit newWidth = renderBox.height() * elementSize.width() / elementSize.height();
// Just fill the whole area if the difference is one pixel or less (in both sides)
if (renderBox.width() - newWidth > 2)
renderBox.setWidth(newWidth);
renderBox.move((contentRect.width() - renderBox.width()) / 2, 0);
} else if (ratio < 0) {
LayoutUnit newHeight = renderBox.width() * elementSize.height() / elementSize.width();
if (renderBox.height() - newHeight > 2)
renderBox.setHeight(newHeight);
renderBox.move(0, (contentRect.height() - renderBox.height()) / 2);
}
return pixelSnappedIntRect(renderBox);
}
LayoutUnit LayoutMedia::computePanelWidth(const LayoutRect& mediaRect) const {
// TODO(mlamouri): we don't know if the main frame has an horizontal scrollbar
// if it is out of process. See https://crbug.com/662480
if (document().page()->mainFrame()->isRemoteFrame())
return mediaRect.width();
FrameHost* frameHost = document().frameHost();
LocalFrame* mainFrame = document().page()->deprecatedLocalMainFrame();
FrameView* pageView = mainFrame ? mainFrame->view() : nullptr;
if (!frameHost || !mainFrame || !pageView)
return mediaRect.width();
if (pageView->horizontalScrollbarMode() != ScrollbarAlwaysOff)
return mediaRect.width();
// On desktop, this will include scrollbars when they stay visible.
const LayoutUnit visibleWidth(frameHost->visualViewport().visibleWidth());
const LayoutUnit absoluteXOffset(
localToAbsolute(
FloatPoint(mediaRect.location()),
UseTransforms | ApplyContainerFlip | TraverseDocumentBoundaries)
.x());
DCHECK_GE(visibleWidth - absoluteXOffset, 0);
return std::min(mediaRect.width(), visibleWidth - absoluteXOffset);
}
void MediaPlayerPrivate::resizeSourceDimensions()
{
if (!m_webCorePlayer)
return;
if (!m_webCorePlayer->mediaPlayerClient()->mediaPlayerIsVideo())
return;
// If we have an HTMLVideoElement but the source has no video, then we need to resize the media element.
if (!hasVideo() && PlatformPlayer::MediaOK == m_platformPlayer->error()) {
LayoutRect rect = m_webCorePlayer->mediaPlayerClient()->mediaPlayerContentBoxRect();
static const int playbookMinAudioElementWidth = 300;
static const int playbookMinAudioElementHeight = 32;
// If the rect dimensions are less than the allowed minimum, use the minimum instead.
int newWidth = max(rect.width().toInt(), playbookMinAudioElementWidth);
int newHeight = max(rect.height().toInt(), playbookMinAudioElementHeight);
m_webCorePlayer->mediaPlayerClient()->mediaPlayerSetSize(IntSize(newWidth, newHeight));
}
// If we don't know what the width and height of the video source is, then we need to set it to something sane.
if (m_platformPlayer->sourceWidth() && m_platformPlayer->sourceHeight())
return;
LayoutRect rect = m_webCorePlayer->mediaPlayerClient()->mediaPlayerContentBoxRect();
m_platformPlayer->setSourceDimension(rect.width().toUnsigned(), rect.height().toUnsigned());
}
LayoutRect RenderReplaced::replacedContentRect(const LayoutSize& intrinsicSize) const
{
LayoutRect contentRect = contentBoxRect();
ObjectFit objectFit = style().objectFit();
if (objectFit == ObjectFitFill)
return contentRect;
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:
ASSERT_NOT_REACHED();
}
// FIXME: This is where object-position should be taken into account, but since it's not
// implemented yet, assume the initial value of "50% 50%".
LayoutUnit xOffset = (contentRect.width() - finalRect.width()) / 2;
LayoutUnit yOffset = (contentRect.height() - finalRect.height()) / 2;
finalRect.move(xOffset, yOffset);
return finalRect;
}
static LayoutRect clipRectForNinePieceImageStrip(const InlineFlowBox& box, const NinePieceImage& image, const LayoutRect& paintRect)
{
LayoutRect clipRect(paintRect);
const ComputedStyle& style = box.lineLayoutItem().styleRef();
LayoutRectOutsets outsets = style.imageOutsets(image);
if (box.isHorizontal()) {
clipRect.setY(paintRect.y() - outsets.top());
clipRect.setHeight(paintRect.height() + outsets.top() + outsets.bottom());
if (box.includeLogicalLeftEdge()) {
clipRect.setX(paintRect.x() - outsets.left());
clipRect.setWidth(paintRect.width() + outsets.left());
}
if (box.includeLogicalRightEdge())
clipRect.setWidth(clipRect.width() + outsets.right());
} else {
clipRect.setX(paintRect.x() - outsets.left());
clipRect.setWidth(paintRect.width() + outsets.left() + outsets.right());
if (box.includeLogicalLeftEdge()) {
clipRect.setY(paintRect.y() - outsets.top());
clipRect.setHeight(paintRect.height() + outsets.top());
}
if (box.includeLogicalRightEdge())
clipRect.setHeight(clipRect.height() + outsets.bottom());
}
return clipRect;
}
LayoutRect RenderReplaced::replacedContentRect(const LayoutSize& intrinsicSize) const
{
LayoutRect contentRect = contentBoxRect();
if (intrinsicSize.isEmpty())
return contentRect;
ObjectFit objectFit = style().objectFit();
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;
FALLTHROUGH;
case ObjectFitNone:
finalRect.setSize(intrinsicSize);
break;
case ObjectFitFill:
break;
}
LengthPoint objectPosition = style().objectPosition();
LayoutUnit xOffset = minimumValueForLength(objectPosition.x(), contentRect.width() - finalRect.width());
LayoutUnit yOffset = minimumValueForLength(objectPosition.y(), contentRect.height() - finalRect.height());
finalRect.move(xOffset, yOffset);
return finalRect;
}
void RoundedRect::inflateWithRadii(const LayoutUnit& size)
{
LayoutRect old = m_rect;
m_rect.inflate(size);
// Considering the inflation factor of shorter size to scale the radii seems appropriate here
float factor;
if (m_rect.width() < m_rect.height())
factor = old.width() ? (float)m_rect.width() / old.width() : int(0);
else
factor = old.height() ? (float)m_rect.height() / old.height() : int(0);
m_radii.scale(factor);
}
void IntersectionObserver::applyRootMargin(LayoutRect& rect) const
{
// TODO(szager): Make sure the spec is clear that left/right margins are resolved against
// width and not height.
LayoutUnit topMargin = computeMargin(m_topMargin, rect.height());
LayoutUnit rightMargin = computeMargin(m_rightMargin, rect.width());
LayoutUnit bottomMargin = computeMargin(m_bottomMargin, rect.height());
LayoutUnit leftMargin = computeMargin(m_leftMargin, rect.width());
rect.setX(rect.x() - leftMargin);
rect.setWidth(rect.width() + leftMargin + rightMargin);
rect.setY(rect.y() - topMargin);
rect.setHeight(rect.height() + topMargin + bottomMargin);
}
static void deflateIfOverlapped(LayoutRect& a, LayoutRect& b)
{
if (!a.intersects(b) || a.contains(b) || b.contains(a))
return;
LayoutUnit deflateFactor = -fudgeFactor();
// Avoid negative width or height values.
if ((a.width() + 2 * deflateFactor > 0) && (a.height() + 2 * deflateFactor > 0))
a.inflate(deflateFactor);
if ((b.width() + 2 * deflateFactor > 0) && (b.height() + 2 * deflateFactor > 0))
b.inflate(deflateFactor);
}
LayoutRect LayoutReplaced::computeObjectFit(
const LayoutSize* overriddenIntrinsicSize) const {
LayoutRect contentRect = contentBoxRect();
ObjectFit objectFit = style()->getObjectFit();
if (objectFit == ObjectFitFill &&
style()->objectPosition() == ComputedStyle::initialObjectPosition()) {
return contentRect;
}
// TODO(davve): intrinsicSize doubles as both intrinsic size and intrinsic
// ratio. In the case of SVG images this isn't correct since they can have
// intrinsic ratio but no intrinsic size. In order to maintain aspect ratio,
// the intrinsic size for SVG might be faked from the aspect ratio,
// see SVGImage::containerSize().
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;
}
void RenderImage::paintIntoRect(GraphicsContext* context, const LayoutRect& rect)
{
if (!m_imageResource->hasImage() || m_imageResource->errorOccurred() || rect.width() <= 0 || rect.height() <= 0)
return;
RefPtr<Image> img = m_imageResource->image(rect.width(), rect.height());
if (!img || img->isNull())
return;
HTMLImageElement* imageElt = (node() && node()->hasTagName(imgTag)) ? static_cast<HTMLImageElement*>(node()) : 0;
CompositeOperator compositeOperator = imageElt ? imageElt->compositeOperator() : CompositeSourceOver;
Image* image = m_imageResource->image().get();
bool useLowQualityScaling = shouldPaintAtLowQuality(context, image, image, rect.size());
context->drawImage(m_imageResource->image(rect.width(), rect.height()).get(), style()->colorSpace(), rect, compositeOperator, useLowQualityScaling);
}
void TimelineRecordFactory::addRectData(InspectorObject* data, const LayoutRect& rect)
{
data->setNumber("x", rect.x());
data->setNumber("y", rect.y());
data->setNumber("width", rect.width());
data->setNumber("height", rect.height());
}
LayoutPoint ScrollableArea::constrainScrollPositionForOverhang(const LayoutRect& visibleContentRect, const LayoutSize& totalContentsSize, const LayoutPoint& scrollPosition, const LayoutPoint& scrollOrigin, int headerHeight, int footerHeight)
{
// The viewport rect that we're scrolling shouldn't be larger than our document.
LayoutSize idealScrollRectSize(std::min(visibleContentRect.width(), totalContentsSize.width()), std::min(visibleContentRect.height(), totalContentsSize.height()));
LayoutRect scrollRect(scrollPosition + scrollOrigin - LayoutSize(0, headerHeight), idealScrollRectSize);
LayoutRect documentRect(LayoutPoint(), LayoutSize(totalContentsSize.width(), totalContentsSize.height() - headerHeight - footerHeight));
// Use intersection to constrain our ideal scroll rect by the document rect.
scrollRect.intersect(documentRect);
if (scrollRect.size() != idealScrollRectSize) {
// If the rect was clipped, restore its size, effectively pushing it "down" from the top left.
scrollRect.setSize(idealScrollRectSize);
// If we still clip, push our rect "up" from the bottom right.
scrollRect.intersect(documentRect);
if (scrollRect.width() < idealScrollRectSize.width())
scrollRect.move(-(idealScrollRectSize.width() - scrollRect.width()), 0);
if (scrollRect.height() < idealScrollRectSize.height())
scrollRect.move(0, -(idealScrollRectSize.height() - scrollRect.height()));
}
return scrollRect.location() - toLayoutSize(scrollOrigin);
}
Vector<IntRect> RenderTextLineBoxes::absoluteRectsForRange(const RenderText& renderer, unsigned start, unsigned end, bool useSelectionHeight, bool* wasFixed) const
{
Vector<IntRect> rects;
for (auto box = m_first; box; box = box->nextTextBox()) {
// Note: box->end() returns the index of the last character, not the index past it
if (start <= box->start() && box->end() < end) {
FloatRect boundaries = box->calculateBoundaries();
if (useSelectionHeight) {
LayoutRect selectionRect = box->localSelectionRect(start, end);
if (box->isHorizontal()) {
boundaries.setHeight(selectionRect.height());
boundaries.setY(selectionRect.y());
} else {
boundaries.setWidth(selectionRect.width());
boundaries.setX(selectionRect.x());
}
}
rects.append(renderer.localToAbsoluteQuad(boundaries, 0, wasFixed).enclosingBoundingBox());
continue;
}
// FIXME: This code is wrong. It's converting local to absolute twice. http://webkit.org/b/65722
FloatRect rect = localQuadForTextBox(*box, start, end, useSelectionHeight);
if (!rect.isZero())
rects.append(renderer.localToAbsoluteQuad(rect, 0, wasFixed).enclosingBoundingBox());
}
return rects;
}
bool RenderThemeChromiumSkia::paintSearchFieldResultsDecoration(RenderObject* magnifierObject, const PaintInfo& paintInfo, const IntRect& r)
{
// Get the renderer of <input> element.
if (!magnifierObject->node())
return false;
Node* input = magnifierObject->node()->shadowHost();
RenderObject* baseRenderer = input ? input->renderer() : magnifierObject;
if (!baseRenderer->isBox())
return false;
RenderBox* inputRenderBox = toRenderBox(baseRenderer);
LayoutRect inputContentBox = inputRenderBox->contentBoxRect();
// Make sure the scaled decoration stays square and will fit in its parent's box.
LayoutUnit magnifierSize = std::min(inputContentBox.width(), std::min<LayoutUnit>(inputContentBox.height(), r.height()));
// Calculate decoration's coordinates relative to the input element.
// Center the decoration vertically. Round up though, so if it has to be one pixel off-center, it will
// be one pixel closer to the bottom of the field. This tends to look better with the text.
LayoutRect magnifierRect(magnifierObject->offsetFromAncestorContainer(inputRenderBox).width(),
inputContentBox.y() + (inputContentBox.height() - magnifierSize + 1) / 2,
magnifierSize, magnifierSize);
IntRect paintingRect = convertToPaintingRect(inputRenderBox, magnifierObject, magnifierRect, r);
DEFINE_STATIC_REF(Image, magnifierImage, (Image::loadPlatformResource("searchMagnifier")));
paintInfo.context->drawImage(magnifierImage, paintingRect);
return false;
}
ScrollAnchor::ExamineResult ScrollAnchor::examine(
const LayoutObject* candidate) const {
if (candidate->isLayoutInline())
return ExamineResult(Continue);
// Anonymous blocks are not in the DOM tree and it may be hard for
// developers to reason about the anchor node.
if (candidate->isAnonymous())
return ExamineResult(Continue);
if (!candidate->isText() && !candidate->isBox())
return ExamineResult(Skip);
if (!candidateMayMoveWithScroller(candidate, m_scroller))
return ExamineResult(Skip);
if (candidate->style()->overflowAnchor() == AnchorNone)
return ExamineResult(Skip);
LayoutRect candidateRect = relativeBounds(candidate, m_scroller);
LayoutRect visibleRect =
scrollerLayoutBoxItem(m_scroller).overflowClipRect(LayoutPoint());
bool occupiesSpace = candidateRect.width() > 0 && candidateRect.height() > 0;
if (occupiesSpace && visibleRect.intersects(candidateRect)) {
return ExamineResult(
visibleRect.contains(candidateRect) ? Return : Constrain,
cornerToAnchor(m_scroller));
} else {
return ExamineResult(Skip);
}
}
bool RenderThemeChromiumSkia::paintSearchFieldCancelButton(RenderObject* cancelButtonObject, const PaintInfo& paintInfo, const IntRect& r)
{
// Get the renderer of <input> element.
Node* input = cancelButtonObject->node()->shadowHost();
RenderObject* baseRenderer = input ? input->renderer() : cancelButtonObject;
if (!baseRenderer->isBox())
return false;
RenderBox* inputRenderBox = toRenderBox(baseRenderer);
LayoutRect inputContentBox = inputRenderBox->contentBoxRect();
// Make sure the scaled button stays square and will fit in its parent's box.
LayoutUnit cancelButtonSize = std::min(inputContentBox.width(), std::min<LayoutUnit>(inputContentBox.height(), r.height()));
// Calculate cancel button's coordinates relative to the input element.
// Center the button vertically. Round up though, so if it has to be one pixel off-center, it will
// be one pixel closer to the bottom of the field. This tends to look better with the text.
LayoutRect cancelButtonRect(cancelButtonObject->offsetFromAncestorContainer(inputRenderBox).width(),
inputContentBox.y() + (inputContentBox.height() - cancelButtonSize + 1) / 2,
cancelButtonSize, cancelButtonSize);
IntRect paintingRect = convertToPaintingRect(inputRenderBox, cancelButtonObject, cancelButtonRect, r);
static Image* cancelImage = Image::loadPlatformResource("searchCancel").leakRef();
static Image* cancelPressedImage = Image::loadPlatformResource("searchCancelPressed").leakRef();
paintInfo.context->drawImage(isPressed(cancelButtonObject) ? cancelPressedImage : cancelImage,
cancelButtonObject->style()->colorSpace(), paintingRect);
return false;
}
Vector<FloatQuad> RenderTextLineBoxes::absoluteQuadsForRange(const RenderText& renderer, unsigned start, unsigned end, bool useSelectionHeight, bool* wasFixed) const
{
Vector<FloatQuad> quads;
for (auto box = m_first; box; box = box->nextTextBox()) {
// Note: box->end() returns the index of the last character, not the index past it
if (start <= box->start() && box->end() < end) {
FloatRect boundaries = box->calculateBoundaries();
if (useSelectionHeight) {
LayoutRect selectionRect = box->localSelectionRect(start, end);
if (box->isHorizontal()) {
boundaries.setHeight(selectionRect.height());
boundaries.setY(selectionRect.y());
} else {
boundaries.setWidth(selectionRect.width());
boundaries.setX(selectionRect.x());
}
}
quads.append(renderer.localToAbsoluteQuad(boundaries, 0, wasFixed));
continue;
}
FloatRect rect = localQuadForTextBox(*box, start, end, useSelectionHeight);
if (!rect.isZero())
quads.append(renderer.localToAbsoluteQuad(rect, 0, wasFixed));
}
return quads;
}
static LayoutRect relevantViewRect(RenderView* view)
{
// DidHitRelevantRepaintedObjectsAreaThreshold is a LayoutMilestone intended to indicate that
// a certain relevant amount of content has been drawn to the screen. This is the rect that
// has been determined to be relevant in the context of this goal. We may choose to tweak
// the rect over time, much like we may choose to tweak gMinimumPaintedAreaRatio and
// gMaximumUnpaintedAreaRatio. But this seems to work well right now.
LayoutRect relevantViewRect = LayoutRect(0, 0, 980, 1300);
LayoutRect viewRect = view->viewRect();
// If the viewRect is wider than the relevantViewRect, center the relevantViewRect.
if (viewRect.width() > relevantViewRect.width())
relevantViewRect.setX((viewRect.width() - relevantViewRect.width()) / 2);
return relevantViewRect;
}
bool canScrollInDirection(const Frame* frame, FocusDirection direction)
{
if (!frame->view())
return false;
ScrollbarMode verticalMode;
ScrollbarMode horizontalMode;
frame->view()->calculateScrollbarModesForLayout(horizontalMode, verticalMode);
if ((direction == FocusDirectionLeft || direction == FocusDirectionRight) && ScrollbarAlwaysOff == horizontalMode)
return false;
if ((direction == FocusDirectionUp || direction == FocusDirectionDown) && ScrollbarAlwaysOff == verticalMode)
return false;
LayoutSize size = frame->view()->totalContentsSize();
LayoutSize offset = frame->view()->scrollOffset();
LayoutRect rect = frame->view()->visibleContentRectIncludingScrollbars();
switch (direction) {
case FocusDirectionLeft:
return offset.width() > 0;
case FocusDirectionUp:
return offset.height() > 0;
case FocusDirectionRight:
return rect.width() + offset.width() < size.width();
case FocusDirectionDown:
return rect.height() + offset.height() < size.height();
default:
ASSERT_NOT_REACHED();
return false;
}
}
void LayoutTextControlSingleLine::paint(const PaintInfo& paintInfo,
const LayoutPoint& paintOffset) const {
LayoutTextControl::paint(paintInfo, paintOffset);
if (shouldPaintSelfBlockBackground(paintInfo.phase) &&
m_shouldDrawCapsLockIndicator) {
if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(
paintInfo.context, *this, paintInfo.phase))
return;
LayoutRect contentsRect = contentBoxRect();
// Center in the block progression direction.
if (isHorizontalWritingMode())
contentsRect.setY((size().height() - contentsRect.height()) / 2);
else
contentsRect.setX((size().width() - contentsRect.width()) / 2);
// Convert the rect into the coords used for painting the content
contentsRect.moveBy(paintOffset + location());
IntRect snappedRect = pixelSnappedIntRect(contentsRect);
LayoutObjectDrawingRecorder recorder(paintInfo.context, *this,
paintInfo.phase, snappedRect);
LayoutTheme::theme().painter().paintCapsLockIndicator(*this, paintInfo,
snappedRect);
}
}
bool canScrollInDirection(const LocalFrame* frame, FocusType type)
{
if (!frame->view())
return false;
ScrollbarMode verticalMode;
ScrollbarMode horizontalMode;
frame->view()->calculateScrollbarModesForLayoutAndSetViewportRenderer(horizontalMode, verticalMode);
if ((type == FocusTypeLeft || type == FocusTypeRight) && ScrollbarAlwaysOff == horizontalMode)
return false;
if ((type == FocusTypeUp || type == FocusTypeDown) && ScrollbarAlwaysOff == verticalMode)
return false;
LayoutSize size = frame->view()->contentsSize();
LayoutSize offset = frame->view()->scrollOffset();
LayoutRect rect = frame->view()->visibleContentRect(IncludeScrollbars);
switch (type) {
case FocusTypeLeft:
return offset.width() > 0;
case FocusTypeUp:
return offset.height() > 0;
case FocusTypeRight:
return rect.width() + offset.width() < size.width();
case FocusTypeDown:
return rect.height() + offset.height() < size.height();
default:
ASSERT_NOT_REACHED();
return false;
}
}
LayoutPoint MultiColumnFragmentainerGroup::visualPointToFlowThreadPoint(
const LayoutPoint& visualPoint) const {
unsigned columnIndex = columnIndexAtVisualPoint(visualPoint);
LayoutRect columnRect = columnRectAt(columnIndex);
LayoutPoint localPoint(visualPoint);
localPoint.moveBy(-columnRect.location());
// Before converting to a flow thread position, if the block direction
// coordinate is outside the column, snap to the bounds of the column, and
// reset the inline direction coordinate to the start position in the column.
// The effect of this is that if the block position is before the column
// rectangle, we'll get to the beginning of this column, while if the block
// position is after the column rectangle, we'll get to the beginning of the
// next column.
if (!m_columnSet.isHorizontalWritingMode()) {
LayoutUnit columnStart = m_columnSet.style()->isLeftToRightDirection()
? LayoutUnit()
: columnRect.height();
if (localPoint.x() < 0)
localPoint = LayoutPoint(LayoutUnit(), columnStart);
else if (localPoint.x() > logicalHeight())
localPoint = LayoutPoint(logicalHeight(), columnStart);
return LayoutPoint(localPoint.x() + logicalTopInFlowThreadAt(columnIndex),
localPoint.y());
}
LayoutUnit columnStart = m_columnSet.style()->isLeftToRightDirection()
? LayoutUnit()
: columnRect.width();
if (localPoint.y() < 0)
localPoint = LayoutPoint(columnStart, LayoutUnit());
else if (localPoint.y() > logicalHeight())
localPoint = LayoutPoint(columnStart, logicalHeight());
return LayoutPoint(localPoint.x(),
localPoint.y() + logicalTopInFlowThreadAt(columnIndex));
}
LayoutRect InlineTextBox::localSelectionRect(int startPos, int endPos) const
{
int sPos = std::max(startPos - m_start, 0);
int ePos = std::min(endPos - m_start, (int)m_len);
if (sPos > ePos)
return LayoutRect();
FontCachePurgePreventer fontCachePurgePreventer;
LayoutUnit selTop = root().selectionTop();
LayoutUnit selHeight = root().selectionHeight();
const ComputedStyle& styleToUse = lineLayoutItem().styleRef(isFirstLineStyle());
const Font& font = styleToUse.font();
StringBuilder charactersWithHyphen;
bool respectHyphen = ePos == m_len && hasHyphen();
TextRun textRun = constructTextRun(styleToUse, font, respectHyphen ? &charactersWithHyphen : 0);
LayoutPoint startingPoint = LayoutPoint(logicalLeft(), selTop);
LayoutRect r;
if (sPos || ePos != static_cast<int>(m_len)) {
r = LayoutRect(enclosingIntRect(font.selectionRectForText(textRun, FloatPoint(startingPoint), selHeight, sPos, ePos)));
} else { // Avoid computing the font width when the entire line box is selected as an optimization.
// FIXME: the call to rawValue() below is temporary and should be removed once the transition
// to LayoutUnit-based types is complete (crbug.com/321237)
r = LayoutRect(enclosingIntRect(LayoutRect(startingPoint, LayoutSize(m_logicalWidth, selHeight))));
}
LayoutUnit logicalWidth = r.width();
if (r.x() > logicalRight())
logicalWidth = 0;
else if (r.maxX() > logicalRight())
logicalWidth = logicalRight() - r.x();
LayoutPoint topPoint;
LayoutUnit width;
LayoutUnit height;
if (isHorizontal()) {
topPoint = LayoutPoint(r.x(), selTop);
width = logicalWidth;
height = selHeight;
if (hasWrappedSelectionNewline()) {
if (!isLeftToRightDirection())
topPoint.setX(topPoint.x() - newlineSpaceWidth());
width += newlineSpaceWidth();
}
} else {
topPoint = LayoutPoint(selTop, r.x());
width = selHeight;
height = logicalWidth;
// TODO(wkorman): RTL text embedded in top-to-bottom text can create
// bottom-to-top situations. Add tests and ensure we handle correctly.
if (hasWrappedSelectionNewline())
height += newlineSpaceWidth();
}
return LayoutRect(topPoint, LayoutSize(width, height));
}
// FIXME: Move this somewhere more generic.
void PrintTo(const LayoutRect& rect, std::ostream* os)
{
*os << "LayoutRect("
<< rect.x().toFloat() << ", "
<< rect.y().toFloat() << ", "
<< rect.width().toFloat() << ", "
<< rect.height().toFloat() << ")";
}
void LayoutImage::updateInnerContentRect()
{
// Propagate container size to the image resource.
LayoutRect containerRect = replacedContentRect();
IntSize containerSize(containerRect.width(), containerRect.height());
if (!containerSize.isEmpty())
m_imageResource->setContainerSizeForLayoutObject(containerSize);
}
IntRect enclosingIntRect(const LayoutRect& rect)
{
// Empty rects with fractional x, y values turn into non-empty rects when converting to enclosing.
// We need to ensure that empty rects stay empty after the conversion, because the selection code expects them to be empty.
IntPoint location = flooredIntPoint(rect.minXMinYCorner());
IntPoint maxPoint = IntPoint(rect.width() ? rect.maxX().ceil() : location.x(), rect.height() ? rect.maxY().ceil() : location.y());
return IntRect(location, maxPoint - location);
}
// Checks if |node| is offscreen the visible area (viewport) of its container
// document. In case it is, one can scroll in direction or take any different
// desired action later on.
bool hasOffscreenRect(Node* node, FocusType type)
{
// Get the FrameView in which |node| is (which means the current viewport if |node|
// is not in an inner document), so we can check if its content rect is visible
// before we actually move the focus to it.
FrameView* frameView = node->document().view();
if (!frameView)
return true;
ASSERT(!frameView->needsLayout());
LayoutRect containerViewportRect = frameView->visibleContentRect();
// We want to select a node if it is currently off screen, but will be
// exposed after we scroll. Adjust the viewport to post-scrolling position.
// If the container has overflow:hidden, we cannot scroll, so we do not pass direction
// and we do not adjust for scrolling.
switch (type) {
case FocusTypeLeft:
containerViewportRect.setX(containerViewportRect.x() - ScrollableArea::pixelsPerLineStep());
containerViewportRect.setWidth(containerViewportRect.width() + ScrollableArea::pixelsPerLineStep());
break;
case FocusTypeRight:
containerViewportRect.setWidth(containerViewportRect.width() + ScrollableArea::pixelsPerLineStep());
break;
case FocusTypeUp:
containerViewportRect.setY(containerViewportRect.y() - ScrollableArea::pixelsPerLineStep());
containerViewportRect.setHeight(containerViewportRect.height() + ScrollableArea::pixelsPerLineStep());
break;
case FocusTypeDown:
containerViewportRect.setHeight(containerViewportRect.height() + ScrollableArea::pixelsPerLineStep());
break;
default:
break;
}
RenderObject* render = node->renderer();
if (!render)
return true;
LayoutRect rect(render->absoluteClippedOverflowRect());
if (rect.isEmpty())
return true;
return !containerViewportRect.intersects(rect);
}
static LayoutSize itemOffsetForAlignment(TextRun textRun, RenderStyle* itemStyle, Font itemFont, LayoutRect itemBoudingBox)
{
ETextAlign actualAlignment = itemStyle->textAlign();
// FIXME: Firefox doesn't respect JUSTIFY. Should we?
if (actualAlignment == TAAUTO || actualAlignment == JUSTIFY)
actualAlignment = itemStyle->isLeftToRightDirection() ? LEFT : RIGHT;
LayoutSize offset = LayoutSize(0, itemFont.fontMetrics().ascent());
if (actualAlignment == RIGHT || actualAlignment == WEBKIT_RIGHT) {
float textWidth = itemFont.width(textRun);
offset.setWidth(itemBoudingBox.width() - textWidth - optionsSpacingHorizontal);
} else if (actualAlignment == CENTER || actualAlignment == WEBKIT_CENTER) {
float textWidth = itemFont.width(textRun);
offset.setWidth((itemBoudingBox.width() - textWidth) / 2);
} else
offset.setWidth(optionsSpacingHorizontal);
return offset;
}
static bool isValidRasterShapeRect(const LayoutRect& rect)
{
static double maxImageSizeBytes = 0;
if (!maxImageSizeBytes) {
size_t size32MaxBytes = 0xFFFFFFFF / 4; // Some platforms don't limit maxDecodedImageBytes.
maxImageSizeBytes = std::min(size32MaxBytes, Platform::current()->maxDecodedImageBytes());
}
return (rect.width().toFloat() * rect.height().toFloat() * 4.0) < maxImageSizeBytes;
}