LayoutUnit InlineTextBox::lineHeight() const
{
if (!isText() || !lineLayoutItem().parent())
return 0;
if (lineLayoutItem().isBR())
return toLayoutBR(lineLayoutItem())->lineHeight(isFirstLineStyle());
if (parent()->lineLayoutItem() == lineLayoutItem().parent())
return parent()->lineHeight();
return LineLayoutBoxModel(lineLayoutItem().parent()).lineHeight(isFirstLineStyle(), isHorizontal() ? HorizontalLine : VerticalLine, PositionOnContainingLine);
}
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 = 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;
}
}
FloatPoint boxOrigin = locationIncludingFlipping();
boxOrigin.moveBy(accumulatedOffset);
FloatRect boundsRect(boxOrigin, size());
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;
}
void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
GraphicsContext* context = paintInfo.context;
RenderStyle* style = renderer().style(isFirstLineStyle());
const Font& font = style->font();
FloatPoint boxOrigin = locationIncludingFlipping();
boxOrigin.moveBy(FloatPoint(paintOffset));
if (!isHorizontal())
boxOrigin.move(0, -virtualLogicalHeight());
FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), virtualLogicalHeight()));
GraphicsContextStateSaver stateSaver(*context);
if (!isHorizontal())
context->concatCTM(InlineTextBox::rotation(boxRect, InlineTextBox::Clockwise));
FloatPoint textOrigin(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent());
bool isPrinting = renderer().document().printing();
bool haveSelection = !isPrinting && paintInfo.phase != PaintPhaseTextClip && selectionState() != RenderObject::SelectionNone;
if (haveSelection)
paintSelection(context, boxOrigin, style, font);
else if (paintInfo.phase == PaintPhaseSelection)
return;
TextPainter::Style textStyle = TextPainter::textPaintingStyle(renderer(), style, paintInfo.forceBlackText(), isPrinting);
if (haveSelection)
textStyle = TextPainter::selectionPaintingStyle(renderer(), true, paintInfo.forceBlackText(), isPrinting, textStyle);
TextRun textRun = constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion);
TextPainter textPainter(context, font, textRun, textOrigin, boxRect, isHorizontal());
textPainter.paint(0, m_str.length(), m_str.length(), textStyle);
paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
}
IntRect EllipsisBox::selectionRect()
{
RenderStyle* style = m_renderer->style(isFirstLineStyle());
const Font& font = style->font();
// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
return enclosingIntRect(font.selectionRectForText(RenderBlock::constructTextRun(renderer(), font, m_str, style, TextRun::AllowTrailingExpansion), IntPoint(x(), y() + root()->selectionTopAdjustedForPrecedingBlock()), root()->selectionHeightAdjustedForPrecedingBlock()));
}
void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
GraphicsContext* context = paintInfo.context;
RenderStyle* style = m_renderer->style(isFirstLineStyle());
Color styleTextColor = style->visitedDependentColor(CSSPropertyWebkitTextFillColor);
if (styleTextColor != context->fillColor())
context->setFillColor(styleTextColor, style->colorSpace());
Color textColor = styleTextColor;
const Font& font = style->font();
if (selectionState() != RenderObject::SelectionNone) {
paintSelection(context, paintOffset, style, font);
// Select the correct color for painting the text.
Color foreground = paintInfo.forceBlackText() ? Color::black : renderer()->selectionForegroundColor();
if (foreground.isValid() && foreground != styleTextColor)
context->setFillColor(foreground, style->colorSpace());
}
const ShadowData* shadow = style->textShadow();
bool hasShadow = shadow;
if (hasShadow) {
// FIXME: it would be better if we could get the shadows top-to-bottom from the style.
Vector<const ShadowData*, 4> shadows;
do {
shadows.append(shadow);
} while ((shadow = shadow->next()));
DrawLooper drawLooper;
drawLooper.addUnmodifiedContent();
for (int i = shadows.size() - 1; i >= 0; i--) {
shadow = shadows[i];
int shadowX = isHorizontal() ? shadow->x() : shadow->y();
int shadowY = isHorizontal() ? shadow->y() : -shadow->x();
FloatSize offset(shadowX, shadowY);
drawLooper.addShadow(offset, shadow->blur(), shadow->color(),
DrawLooper::ShadowRespectsTransforms, DrawLooper::ShadowIgnoresAlpha);
}
context->setDrawLooper(drawLooper);
}
// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
FloatPoint boxOrigin(paintOffset);
boxOrigin.move(x(), y());
FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), logicalHeight()));
FloatPoint textOrigin(boxOrigin.x(), boxOrigin.y() + style->fontMetrics().ascent());
TextRun textRun = RenderBlock::constructTextRun(renderer(), font, m_str, style, TextRun::AllowTrailingExpansion);
TextRunPaintInfo textRunPaintInfo(textRun);
textRunPaintInfo.bounds = boxRect;
context->drawText(font, textRunPaintInfo, textOrigin);
// Restore the regular fill color.
if (styleTextColor != context->fillColor())
context->setFillColor(styleTextColor, style->colorSpace());
if (hasShadow)
context->clearDrawLooper();
paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
}
void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
GraphicsContext* context = paintInfo.context;
RenderStyle* style = renderer().style(isFirstLineStyle());
const Font& font = style->font();
FloatPoint boxOrigin = locationIncludingFlipping();
boxOrigin.moveBy(FloatPoint(paintOffset));
if (!isHorizontal())
boxOrigin.move(0, -virtualLogicalHeight());
FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), virtualLogicalHeight()));
GraphicsContextStateSaver stateSaver(*context);
if (!isHorizontal())
context->concatCTM(InlineTextBox::rotation(boxRect, InlineTextBox::Clockwise));
FloatPoint textOrigin = FloatPoint(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent());
Color styleTextColor = renderer().resolveColor(style, CSSPropertyWebkitTextFillColor);
if (styleTextColor != context->fillColor())
context->setFillColor(styleTextColor);
if (selectionState() != RenderObject::SelectionNone) {
paintSelection(context, boxOrigin, style, font);
// Select the correct color for painting the text.
Color foreground = paintInfo.forceBlackText() ? Color::black : renderer().selectionForegroundColor();
if (foreground != styleTextColor)
context->setFillColor(foreground);
}
// Text shadows are disabled when printing. http://crbug.com/258321
const ShadowList* shadowList = context->printing() ? 0 : style->textShadow();
bool hasShadow = shadowList;
if (hasShadow) {
OwnPtr<DrawLooperBuilder> drawLooperBuilder = DrawLooperBuilder::create();
for (size_t i = shadowList->shadows().size(); i--; ) {
const ShadowData& shadow = shadowList->shadows()[i];
float shadowX = isHorizontal() ? shadow.x() : shadow.y();
float shadowY = isHorizontal() ? shadow.y() : -shadow.x();
FloatSize offset(shadowX, shadowY);
drawLooperBuilder->addShadow(offset, shadow.blur(), shadow.color(),
DrawLooperBuilder::ShadowRespectsTransforms, DrawLooperBuilder::ShadowIgnoresAlpha);
}
drawLooperBuilder->addUnmodifiedContent();
context->setDrawLooper(drawLooperBuilder.release());
}
TextRun textRun = RenderBlockFlow::constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion);
TextRunPaintInfo textRunPaintInfo(textRun);
textRunPaintInfo.bounds = boxRect;
context->drawText(font, textRunPaintInfo, textOrigin);
// Restore the regular fill color.
if (styleTextColor != context->fillColor())
context->setFillColor(styleTextColor);
if (hasShadow)
context->clearDrawLooper();
paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
}
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));
}
LayoutUnit InlineBox::logicalHeight() const
{
if (hasVirtualLogicalHeight())
return virtualLogicalHeight();
if (lineLayoutItem().isText())
return m_bitfields.isText() ? LayoutUnit(lineLayoutItem().style(isFirstLineStyle())->fontMetrics().height()) : LayoutUnit();
if (lineLayoutItem().isBox() && parent())
return isHorizontal() ? toLayoutBox(layoutObject()).size().height() : toLayoutBox(layoutObject()).size().width();
ASSERT(isInlineFlowBox());
LineLayoutBoxModel flowObject = boxModelObject();
const FontMetrics& fontMetrics = lineLayoutItem().style(isFirstLineStyle())->fontMetrics();
LayoutUnit result = fontMetrics.height();
if (parent())
result += flowObject.borderAndPaddingLogicalHeight();
return result;
}
float InlineBox::logicalHeight() const
{
if (hasVirtualLogicalHeight())
return virtualLogicalHeight();
if (renderer()->isText())
return m_bitfields.isText() ? renderer()->style(isFirstLineStyle())->fontMetrics().height() : 0;
if (renderer()->isBox() && parent())
return isHorizontal() ? toRenderBox(m_renderer)->height() : toRenderBox(m_renderer)->width();
ASSERT(isInlineFlowBox());
RenderBoxModelObject* flowObject = boxModelObject();
const FontMetrics& fontMetrics = renderer()->style(isFirstLineStyle())->fontMetrics();
float result = fontMetrics.height();
if (parent())
result += flowObject->borderAndPaddingLogicalHeight();
return result;
}
int InlineTextBox::baselinePosition(FontBaseline baselineType) const {
if (!isText() || !parent())
return 0;
if (parent()->getLineLayoutItem() == getLineLayoutItem().parent())
return parent()->baselinePosition(baselineType);
return LineLayoutBoxModel(getLineLayoutItem().parent())
.baselinePosition(baselineType, isFirstLineStyle(),
isHorizontal() ? HorizontalLine : VerticalLine,
PositionOnContainingLine);
}
int InlineTextBox::offsetForPosition(LayoutUnit lineOffset, bool includePartialGlyphs) const
{
if (isLineBreak())
return 0;
if (lineOffset - logicalLeft() > logicalWidth())
return isLeftToRightDirection() ? len() : 0;
if (lineOffset - logicalLeft() < 0)
return isLeftToRightDirection() ? 0 : len();
LineLayoutText text = lineLayoutItem();
const ComputedStyle& style = text.styleRef(isFirstLineStyle());
const Font& font = style.font();
return font.offsetForPosition(constructTextRun(style, font), (lineOffset - logicalLeft()).toFloat(), includePartialGlyphs);
}
LayoutUnit InlineTextBox::positionForOffset(int offset) const
{
ASSERT(offset >= m_start);
ASSERT(offset <= m_start + m_len);
if (isLineBreak())
return logicalLeft();
LineLayoutText text = lineLayoutItem();
const ComputedStyle& styleToUse = text.styleRef(isFirstLineStyle());
const Font& font = styleToUse.font();
int from = !isLeftToRightDirection() ? offset - m_start : 0;
int to = !isLeftToRightDirection() ? m_len : offset - m_start;
// FIXME: Do we need to add rightBearing here?
return font.selectionRectForText(constructTextRun(styleToUse, font), IntPoint(logicalLeft(), 0), 0, from, to).maxX();
}
void InlineTextBox::characterWidths(Vector<float>& widths) const
{
FontCachePurgePreventer fontCachePurgePreventer;
const ComputedStyle& styleToUse = lineLayoutItem().styleRef(isFirstLineStyle());
const Font& font = styleToUse.font();
TextRun textRun = constructTextRun(styleToUse, font);
SimpleShaper shaper(&font, textRun);
float lastWidth = 0;
widths.resize(m_len);
for (unsigned i = 0; i < m_len; i++) {
shaper.advance(i + 1);
widths[i] = shaper.runWidthSoFar() - lastWidth;
lastWidth = shaper.runWidthSoFar();
}
}
void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
GraphicsContext* context = paintInfo.context;
RenderStyle* style = renderer().style(isFirstLineStyle());
const Font& font = style->font();
FloatPoint boxOrigin = locationIncludingFlipping();
boxOrigin.moveBy(FloatPoint(paintOffset));
FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), virtualLogicalHeight()));
GraphicsContextStateSaver stateSaver(*context);
FloatPoint textOrigin = FloatPoint(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent());
Color styleTextColor = renderer().resolveColor(style, CSSPropertyWebkitTextFillColor);
if (styleTextColor != context->fillColor())
context->setFillColor(styleTextColor);
if (selectionState() != RenderObject::SelectionNone) {
paintSelection(context, boxOrigin, style, font);
// Select the correct color for painting the text.
Color foreground = paintInfo.forceBlackText() ? Color::black : renderer().selectionForegroundColor();
if (foreground != styleTextColor)
context->setFillColor(foreground);
}
const ShadowList* shadowList = style->textShadow();
bool hasShadow = shadowList;
if (hasShadow)
context->setDrawLooper(shadowList->createDrawLooper(DrawLooperBuilder::ShadowIgnoresAlpha));
TextRun textRun = constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion);
TextRunPaintInfo textRunPaintInfo(textRun);
textRunPaintInfo.bounds = boxRect;
context->drawText(font, textRunPaintInfo, textOrigin);
// Restore the regular fill color.
if (styleTextColor != context->fillColor())
context->setFillColor(styleTextColor);
if (hasShadow)
context->clearDrawLooper();
paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
}
void InlineTextBox::characterWidths(Vector<float>& widths) const {
if (!m_len)
return;
FontCachePurgePreventer fontCachePurgePreventer;
ASSERT(getLineLayoutItem().text());
const ComputedStyle& styleToUse =
getLineLayoutItem().styleRef(isFirstLineStyle());
const Font& font = styleToUse.font();
TextRun textRun = constructTextRun(styleToUse);
Vector<CharacterRange> ranges = font.individualCharacterRanges(textRun);
DCHECK_EQ(ranges.size(), m_len);
widths.resize(ranges.size());
for (unsigned i = 0; i < ranges.size(); i++)
widths[i] = ranges[i].width();
}
void InlineTextBox::characterWidths(Vector<float>& widths) const
{
if (!m_len)
return;
FontCachePurgePreventer fontCachePurgePreventer;
ASSERT(getLineLayoutItem().text());
const ComputedStyle& styleToUse = getLineLayoutItem().styleRef(isFirstLineStyle());
const Font& font = styleToUse.font();
float lastWidth = 0;
widths.resize(m_len);
for (unsigned i = 0; i < m_len; i++) {
StringView substringView = getLineLayoutItem().text().createView();
substringView.narrow(start(), 1 + i);
TextRun textRun = constructTextRun(styleToUse, font, substringView, m_len);
widths[i] = font.width(textRun, nullptr, nullptr) - lastWidth;
lastWidth = font.width(textRun, nullptr, nullptr);
}
}
void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
GraphicsContext* context = paintInfo.context;
RenderStyle* style = renderer().style(isFirstLineStyle());
Color textColor = style->visitedDependentColor(CSSPropertyWebkitTextFillColor);
if (textColor != context->fillColor())
context->setFillColor(textColor, style->colorSpace());
bool setShadow = false;
if (style->textShadow()) {
context->setShadow(LayoutSize(style->textShadow()->x(), style->textShadow()->y()),
style->textShadow()->radius(), style->textShadow()->color(), style->colorSpace());
setShadow = true;
}
const Font& font = style->font();
if (selectionState() != RenderObject::SelectionNone) {
paintSelection(context, paintOffset, style, font);
// Select the correct color for painting the text.
Color foreground = paintInfo.forceBlackText() ? Color::black : renderer().selectionForegroundColor();
if (foreground.isValid() && foreground != textColor)
context->setFillColor(foreground, style->colorSpace());
}
// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
context->drawText(font, RenderBlock::constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion), LayoutPoint(x() + paintOffset.x(), y() + paintOffset.y() + style->fontMetrics().ascent()));
// Restore the regular fill color.
if (textColor != context->fillColor())
context->setFillColor(textColor, style->colorSpace());
if (setShadow)
context->clearShadow();
paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
}
void EllipsisBox::paintMarkupBox(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, RenderStyle* style)
{
InlineBox* markupBox = this->markupBox();
if (!markupBox)
return;
LayoutPoint adjustedPaintOffset = paintOffset;
adjustedPaintOffset.move(x() + m_logicalWidth - markupBox->x(),
y() + style->fontMetrics().ascent() - (markupBox->y() + markupBox->renderer().style(isFirstLineStyle())->fontMetrics().ascent()));
markupBox->paint(paintInfo, adjustedPaintOffset, lineTop, lineBottom);
}
IntRect EllipsisBox::selectionRect() const
{
const ComputedStyle& style = lineLayoutItem().styleRef(isFirstLineStyle());
const Font& font = style.font();
return enclosingIntRect(font.selectionRectForText(constructTextRun(font, m_str, style, TextRun::AllowTrailingExpansion), IntPoint(logicalLeft(), logicalTop() + root().selectionTopAdjustedForPrecedingBlock()), root().selectionHeightAdjustedForPrecedingBlock()));
}
float InlineTextBox::newlineSpaceWidth() const
{
const ComputedStyle& styleToUse = lineLayoutItem().styleRef(isFirstLineStyle());
return styleToUse.font().spaceWidth();
}
IntRect EllipsisBox::selectionRect()
{
RenderStyle* style = renderer().style(isFirstLineStyle());
const Font& font = style->font();
return enclosingIntRect(font.selectionRectForText(constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion), IntPoint(logicalLeft(), logicalTop() + root().selectionTopAdjustedForPrecedingBlock()), root().selectionHeightAdjustedForPrecedingBlock()));
}
LayoutUnit InlineTextBox::placeEllipsisBox(bool flowIsLTR, LayoutUnit visibleLeftEdge, LayoutUnit visibleRightEdge, LayoutUnit ellipsisWidth, LayoutUnit &truncatedWidth, bool& foundBox)
{
if (foundBox) {
setTruncation(cFullTruncation);
return -1;
}
// For LTR this is the left edge of the box, for RTL, the right edge in parent coordinates.
LayoutUnit ellipsisX = flowIsLTR ? visibleRightEdge - ellipsisWidth : visibleLeftEdge + ellipsisWidth;
// Criteria for full truncation:
// LTR: the left edge of the ellipsis is to the left of our text run.
// RTL: the right edge of the ellipsis is to the right of our text run.
bool ltrFullTruncation = flowIsLTR && ellipsisX <= logicalLeft();
bool rtlFullTruncation = !flowIsLTR && ellipsisX >= logicalLeft() + logicalWidth();
if (ltrFullTruncation || rtlFullTruncation) {
// Too far. Just set full truncation, but return -1 and let the ellipsis just be placed at the edge of the box.
setTruncation(cFullTruncation);
foundBox = true;
return -1;
}
bool ltrEllipsisWithinBox = flowIsLTR && (ellipsisX < logicalRight());
bool rtlEllipsisWithinBox = !flowIsLTR && (ellipsisX > logicalLeft());
if (ltrEllipsisWithinBox || rtlEllipsisWithinBox) {
foundBox = true;
// The inline box may have different directionality than it's parent. Since truncation
// behavior depends both on both the parent and the inline block's directionality, we
// must keep track of these separately.
bool ltr = isLeftToRightDirection();
if (ltr != flowIsLTR) {
// Width in pixels of the visible portion of the box, excluding the ellipsis.
int visibleBoxWidth = visibleRightEdge - visibleLeftEdge - ellipsisWidth;
ellipsisX = ltr ? logicalLeft() + visibleBoxWidth : logicalRight() - visibleBoxWidth;
}
int offset = offsetForPosition(ellipsisX, false);
if (offset == 0) {
// No characters should be laid out. Set ourselves to full truncation and place the ellipsis at the min of our start
// and the ellipsis edge.
setTruncation(cFullTruncation);
truncatedWidth += ellipsisWidth;
return std::min(ellipsisX, logicalLeft());
}
// Set the truncation index on the text run.
setTruncation(offset);
// If we got here that means that we were only partially truncated and we need to return the pixel offset at which
// to place the ellipsis.
LayoutUnit widthOfVisibleText = lineLayoutItem().width(m_start, offset, textPos(), flowIsLTR ? LTR : RTL, isFirstLineStyle());
// The ellipsis needs to be placed just after the last visible character.
// Where "after" is defined by the flow directionality, not the inline
// box directionality.
// e.g. In the case of an LTR inline box truncated in an RTL flow then we can
// have a situation such as |Hello| -> |...He|
truncatedWidth += widthOfVisibleText + ellipsisWidth;
if (flowIsLTR)
return logicalLeft() + widthOfVisibleText;
return logicalRight() - widthOfVisibleText - ellipsisWidth;
}
truncatedWidth += logicalWidth();
return -1;
}
