void LayoutSVGInlineText::updateMetricsList(bool& lastCharacterWasWhiteSpace)
{
m_metrics.clear();
if (!textLength())
return;
TextRun run = constructTextRun(*this, 0, textLength(), styleRef().direction());
BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
BidiRunList<BidiCharacterRun>& bidiRuns = bidiResolver.runs();
bool bidiOverride = isOverride(styleRef().unicodeBidi());
BidiStatus status(LTR, bidiOverride);
if (run.is8Bit() || bidiOverride) {
WTF::Unicode::CharDirection direction = WTF::Unicode::LeftToRight;
// If BiDi override is in effect, use the specified direction.
if (bidiOverride && !styleRef().isLeftToRightDirection())
direction = WTF::Unicode::RightToLeft;
bidiRuns.addRun(new BidiCharacterRun(0, run.charactersLength(), status.context.get(), direction));
} else {
status.last = status.lastStrong = WTF::Unicode::OtherNeutral;
bidiResolver.setStatus(status);
bidiResolver.setPositionIgnoringNestedIsolates(TextRunIterator(&run, 0));
const bool hardLineBreak = false;
const bool reorderRuns = false;
bidiResolver.createBidiRunsForLine(TextRunIterator(&run, run.length()), NoVisualOverride, hardLineBreak, reorderRuns);
}
for (const BidiCharacterRun* bidiRun = bidiRuns.firstRun(); bidiRun; bidiRun = bidiRun->next()) {
TextRun subRun = constructTextRun(*this, bidiRun->start(), bidiRun->stop() - bidiRun->start(),
bidiRun->direction());
addMetricsFromRun(subRun, lastCharacterWasWhiteSpace);
}
bidiResolver.runs().deleteRuns();
}
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);
}
FloatRect SVGInlineTextBox::selectionRectForTextFragment(const SVGTextFragment& fragment, int startPosition, int endPosition, RenderStyle* style)
{
ASSERT(startPosition < endPosition);
ASSERT(style);
FontCachePurgePreventer fontCachePurgePreventer;
RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textRenderer->scaledFont();
const FontMetrics& scaledFontMetrics = scaledFont.fontMetrics();
FloatPoint textOrigin(fragment.x, fragment.y);
if (scalingFactor != 1)
textOrigin.scale(scalingFactor, scalingFactor);
textOrigin.move(0, -scaledFontMetrics.floatAscent());
FloatRect selectionRect = scaledFont.selectionRectForText(constructTextRun(style, fragment), textOrigin, fragment.height * scalingFactor, startPosition, endPosition);
if (scalingFactor == 1)
return selectionRect;
selectionRect.scale(1 / scalingFactor);
return selectionRect;
}
int SVGInlineTextBox::offsetForPositionInFragment(
const SVGTextFragment& fragment,
LayoutUnit position,
bool includePartialGlyphs) const {
LineLayoutSVGInlineText lineLayoutItem =
LineLayoutSVGInlineText(this->getLineLayoutItem());
float scalingFactor = lineLayoutItem.scalingFactor();
ASSERT(scalingFactor);
const ComputedStyle& style = lineLayoutItem.styleRef();
TextRun textRun = constructTextRun(style, fragment);
// Eventually handle lengthAdjust="spacingAndGlyphs".
// FIXME: Handle vertical text.
if (fragment.isTransformed()) {
AffineTransform fragmentTransform = fragment.buildFragmentTransform();
textRun.setHorizontalGlyphStretch(
clampTo<float>(fragmentTransform.xScale()));
}
return fragment.characterOffset - start() +
lineLayoutItem.scaledFont().offsetForPosition(
textRun, position * scalingFactor, includePartialGlyphs);
}
FloatRect SVGInlineTextBox::selectionRectForTextFragment(
const SVGTextFragment& fragment,
int startPosition,
int endPosition,
const ComputedStyle& style) const {
ASSERT(startPosition < endPosition);
LineLayoutSVGInlineText lineLayoutItem =
LineLayoutSVGInlineText(this->getLineLayoutItem());
float scalingFactor = lineLayoutItem.scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = lineLayoutItem.scaledFont();
const SimpleFontData* fontData = scaledFont.primaryFont();
DCHECK(fontData);
if (!fontData)
return FloatRect();
const FontMetrics& scaledFontMetrics = fontData->getFontMetrics();
FloatPoint textOrigin(fragment.x, fragment.y);
if (scalingFactor != 1)
textOrigin.scale(scalingFactor, scalingFactor);
textOrigin.move(0, -scaledFontMetrics.floatAscent());
FloatRect selectionRect = scaledFont.selectionRectForText(
constructTextRun(style, fragment), textOrigin,
fragment.height * scalingFactor, startPosition, endPosition);
if (scalingFactor == 1)
return selectionRect;
selectionRect.scale(1 / scalingFactor);
return selectionRect;
}
FloatRect SVGInlineTextBox::selectionRectForTextFragment(const SVGTextFragment& fragment, int startPosition, int endPosition, RenderStyle* style) const
{
ASSERT_WITH_SECURITY_IMPLICATION(startPosition < endPosition);
ASSERT(style);
float scalingFactor = renderer().scalingFactor();
ASSERT(scalingFactor);
const FontCascade& scaledFont = renderer().scaledFont();
const FontMetrics& scaledFontMetrics = scaledFont.fontMetrics();
FloatPoint textOrigin(fragment.x, fragment.y);
if (scalingFactor != 1)
textOrigin.scale(scalingFactor, scalingFactor);
textOrigin.move(0, -scaledFontMetrics.floatAscent());
LayoutRect selectionRect = LayoutRect(textOrigin, LayoutSize(0, fragment.height * scalingFactor));
TextRun run = constructTextRun(style, fragment);
scaledFont.adjustSelectionRectForText(run, selectionRect, startPosition, endPosition);
FloatRect snappedSelectionRect = snapRectToDevicePixelsWithWritingDirection(selectionRect, renderer().document().deviceScaleFactor(), run.ltr());
if (scalingFactor == 1)
return snappedSelectionRect;
snappedSelectionRect.scale(1 / scalingFactor);
return snappedSelectionRect;
}
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));
}
FloatRect SVGInlineTextBox::selectionRectForTextFragment(const SVGTextFragment& fragment, int startPosition, int endPosition, RenderStyle* style)
{
ASSERT(startPosition < endPosition);
const Font& font = style->font();
FloatPoint textOrigin(fragment.x, fragment.y - font.fontMetrics().ascent());
return font.selectionRectForText(constructTextRun(style, fragment), textOrigin, fragment.height, startPosition, endPosition);
}
void FileUploadControlPainter::paintObject(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (m_renderFileUploadControl.style()->visibility() != VISIBLE)
return;
// Push a clip.
GraphicsContextStateSaver stateSaver(*paintInfo.context, false);
if (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseChildBlockBackgrounds) {
IntRect clipRect = enclosingIntRect(LayoutRect(paintOffset.x() + m_renderFileUploadControl.borderLeft(), paintOffset.y() + m_renderFileUploadControl.borderTop(),
m_renderFileUploadControl.width() - m_renderFileUploadControl.borderLeft() - m_renderFileUploadControl.borderRight(),
m_renderFileUploadControl.height() - m_renderFileUploadControl.borderBottom() - m_renderFileUploadControl.borderTop() + buttonShadowHeight));
if (clipRect.isEmpty())
return;
stateSaver.save();
paintInfo.context->clip(clipRect);
}
if (paintInfo.phase == PaintPhaseForeground) {
const String& displayedFilename = m_renderFileUploadControl.fileTextValue();
const Font& font = m_renderFileUploadControl.style()->font();
TextRun textRun = constructTextRun(&m_renderFileUploadControl, font, displayedFilename, m_renderFileUploadControl.style(), TextRun::AllowTrailingExpansion, RespectDirection | RespectDirectionOverride);
// Determine where the filename should be placed
LayoutUnit contentLeft = paintOffset.x() + m_renderFileUploadControl.borderLeft() + m_renderFileUploadControl.paddingLeft();
Node* button = m_renderFileUploadControl.uploadButton();
if (!button)
return;
int buttonWidth = (button && button->renderBox()) ? button->renderBox()->pixelSnappedWidth() : 0;
LayoutUnit buttonAndSpacingWidth = buttonWidth + RenderFileUploadControl::afterButtonSpacing;
float textWidth = font.width(textRun);
LayoutUnit textX;
if (m_renderFileUploadControl.style()->isLeftToRightDirection())
textX = contentLeft + buttonAndSpacingWidth;
else
textX = contentLeft + m_renderFileUploadControl.contentWidth() - buttonAndSpacingWidth - textWidth;
LayoutUnit textY = 0;
// We want to match the button's baseline
// FIXME: Make this work with transforms.
if (RenderButton* buttonRenderer = toRenderButton(button->renderer()))
textY = paintOffset.y() + m_renderFileUploadControl.borderTop() + m_renderFileUploadControl.paddingTop() + buttonRenderer->baselinePosition(AlphabeticBaseline, true, HorizontalLine, PositionOnContainingLine);
else
textY = m_renderFileUploadControl.baselinePosition(AlphabeticBaseline, true, HorizontalLine, PositionOnContainingLine);
TextRunPaintInfo textRunPaintInfo(textRun);
// FIXME: Shouldn't these offsets be rounded? crbug.com/350474
textRunPaintInfo.bounds = FloatRect(textX.toFloat(), textY.toFloat() - m_renderFileUploadControl.style()->fontMetrics().ascent(),
textWidth, m_renderFileUploadControl.style()->fontMetrics().height());
paintInfo.context->setFillColor(m_renderFileUploadControl.resolveColor(CSSPropertyColor));
// Draw the filename
paintInfo.context->drawBidiText(font, textRunPaintInfo, IntPoint(roundToInt(textX), roundToInt(textY)));
}
// Paint the children.
m_renderFileUploadControl.RenderBlockFlow::paintObject(paintInfo, paintOffset);
}
void FileUploadControlPainter::paintObject(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (m_layoutFileUploadControl.style()->visibility() != VISIBLE)
return;
// Push a clip.
Optional<ClipRecorder> clipRecorder;
if (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseDescendantBlockBackgroundsOnly) {
IntRect clipRect = enclosingIntRect(LayoutRect(
LayoutPoint(paintOffset.x() + m_layoutFileUploadControl.borderLeft(), paintOffset.y() + m_layoutFileUploadControl.borderTop()),
m_layoutFileUploadControl.size() + LayoutSize(0, -m_layoutFileUploadControl.borderWidth() + buttonShadowHeight)));
if (clipRect.isEmpty())
return;
clipRecorder.emplace(paintInfo.context, m_layoutFileUploadControl, DisplayItem::ClipFileUploadControlRect, clipRect);
}
if (paintInfo.phase == PaintPhaseForeground && !LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutFileUploadControl, paintInfo.phase)) {
const String& displayedFilename = m_layoutFileUploadControl.fileTextValue();
const Font& font = m_layoutFileUploadControl.style()->font();
TextRun textRun = constructTextRun(font, displayedFilename, m_layoutFileUploadControl.styleRef(), RespectDirection | RespectDirectionOverride);
textRun.setExpansionBehavior(TextRun::AllowTrailingExpansion);
// Determine where the filename should be placed
LayoutUnit contentLeft = paintOffset.x() + m_layoutFileUploadControl.borderLeft() + m_layoutFileUploadControl.paddingLeft();
Node* button = m_layoutFileUploadControl.uploadButton();
if (!button)
return;
int buttonWidth = (button && button->layoutBox()) ? button->layoutBox()->pixelSnappedWidth() : 0;
LayoutUnit buttonAndSpacingWidth(buttonWidth + LayoutFileUploadControl::afterButtonSpacing);
float textWidth = font.width(textRun);
LayoutUnit textX;
if (m_layoutFileUploadControl.style()->isLeftToRightDirection())
textX = contentLeft + buttonAndSpacingWidth;
else
textX = LayoutUnit(contentLeft + m_layoutFileUploadControl.contentWidth() - buttonAndSpacingWidth - textWidth);
LayoutUnit textY;
// We want to match the button's baseline
// FIXME: Make this work with transforms.
if (LayoutButton* buttonLayoutObject = toLayoutButton(button->layoutObject()))
textY = paintOffset.y() + m_layoutFileUploadControl.borderTop() + m_layoutFileUploadControl.paddingTop() + buttonLayoutObject->baselinePosition(AlphabeticBaseline, true, HorizontalLine, PositionOnContainingLine);
else
textY = LayoutUnit(m_layoutFileUploadControl.baselinePosition(AlphabeticBaseline, true, HorizontalLine, PositionOnContainingLine));
TextRunPaintInfo textRunPaintInfo(textRun);
// FIXME: Shouldn't these offsets be rounded? crbug.com/350474
textRunPaintInfo.bounds = FloatRect(textX.toFloat(), textY.toFloat() - m_layoutFileUploadControl.style()->getFontMetrics().ascent(),
textWidth, m_layoutFileUploadControl.style()->getFontMetrics().height());
// Draw the filename.
LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutFileUploadControl, paintInfo.phase, textRunPaintInfo.bounds);
paintInfo.context.setFillColor(m_layoutFileUploadControl.resolveColor(CSSPropertyColor));
paintInfo.context.drawBidiText(font, textRunPaintInfo, FloatPoint(roundToInt(textX), roundToInt(textY)));
}
// Paint the children.
m_layoutFileUploadControl.LayoutBlockFlow::paintObject(paintInfo, paintOffset);
}
TextRun constructTextRun(const Font& font,
const String& string,
const ComputedStyle& style,
TextRunFlags flags) {
return constructTextRun(font, string, style,
string.isEmpty() || string.is8Bit()
? LTR
: determineDirectionality(string),
flags);
}
float LayoutTextControl::getAvgCharWidth(AtomicString family)
{
if (hasValidAvgCharWidth(family))
return roundf(style()->font().primaryFont()->avgCharWidth());
const UChar ch = '0';
const String str = String(&ch, 1);
const Font& font = style()->font();
TextRun textRun = constructTextRun(this, font, str, styleRef(), TextRun::AllowTrailingExpansion);
return font.width(textRun);
}
float RenderTextControl::getAverageCharWidth()
{
float width;
if (style().fontCascade().fastAverageCharWidthIfAvailable(width))
return width;
const UChar ch = '0';
const String str = String(&ch, 1);
const FontCascade& font = style().fontCascade();
TextRun textRun = constructTextRun(this, font, str, style(), AllowTrailingExpansion);
return font.width(textRun);
}
TextRun InlineTextBox::constructTextRun(
const ComputedStyle& style,
StringBuilder* charactersWithHyphen) const {
ASSERT(getLineLayoutItem().text());
String string = getLineLayoutItem().text();
unsigned startPos = start();
unsigned length = len();
return constructTextRun(style, StringView(string, startPos, length),
getLineLayoutItem().textLength() - startPos,
charactersWithHyphen);
}
LayoutUnit LayoutListMarker::getWidthOfTextWithSuffix() const
{
if (m_text.isEmpty())
return 0;
const Font& font = style()->font();
LayoutUnit itemWidth = font.width(m_text);
// TODO(wkorman): Look into constructing a text run for both text and suffix
// and painting them together.
UChar suffix[2] = { ListMarkerText::suffix(style()->listStyleType(), m_listItem->value()), ' ' };
TextRun run = constructTextRun(font, suffix, 2, styleRef(), style()->direction());
LayoutUnit suffixSpaceWidth = font.width(run);
return itemWidth + suffixSpaceWidth;
}
TextRun InlineTextBox::constructTextRun(const ComputedStyle& style, const Font& font, StringBuilder* charactersWithHyphen) const
{
ASSERT(lineLayoutItem().text());
StringView string = lineLayoutItem().text().createView();
unsigned startPos = start();
unsigned length = len();
if (string.length() != length || startPos)
string.narrow(startPos, length);
return constructTextRun(style, font, string, lineLayoutItem().textLength() - startPos, charactersWithHyphen);
}
float LayoutTextControl::getAvgCharWidth(const AtomicString& family) const {
const Font& font = style()->font();
const SimpleFontData* primaryFont = font.primaryFont();
if (primaryFont && hasValidAvgCharWidth(primaryFont, family))
return roundf(primaryFont->avgCharWidth());
const UChar ch = '0';
const String str = String(&ch, 1);
TextRun textRun =
constructTextRun(font, str, styleRef(), TextRun::AllowTrailingExpansion);
return font.width(textRun);
}
void SVGInlineTextBox::paintText(GraphicsContext* context, RenderStyle* style, RenderStyle* selectionStyle, const SVGTextFragment& fragment, bool hasSelection, bool paintSelectedTextOnly)
{
ASSERT(style);
ASSERT(selectionStyle);
int startPosition = 0;
int endPosition = 0;
if (hasSelection) {
selectionStartEnd(startPosition, endPosition);
hasSelection = mapStartEndPositionsIntoFragmentCoordinates(fragment, startPosition, endPosition);
}
// Fast path if there is no selection, just draw the whole chunk part using the regular style
TextRun textRun = constructTextRun(style, fragment);
if (!hasSelection || startPosition >= endPosition) {
paintTextWithShadows(context, style, textRun, fragment, 0, fragment.length);
return;
}
// Eventually draw text using regular style until the start position of the selection
if (startPosition > 0 && !paintSelectedTextOnly)
paintTextWithShadows(context, style, textRun, fragment, 0, startPosition);
// Draw text using selection style from the start to the end position of the selection
if (style != selectionStyle)
SVGResourcesCache::clientStyleChanged(parent()->renderer(), StyleDifferenceRepaint, selectionStyle);
TextRun selectionTextRun = constructTextRun(selectionStyle, fragment);
paintTextWithShadows(context, selectionStyle, textRun, fragment, startPosition, endPosition);
if (style != selectionStyle)
SVGResourcesCache::clientStyleChanged(parent()->renderer(), StyleDifferenceRepaint, style);
// Eventually draw text using regular style from the end position of the selection to the end of the current chunk part
if (endPosition < static_cast<int>(fragment.length) && !paintSelectedTextOnly)
paintTextWithShadows(context, style, textRun, fragment, endPosition, fragment.length);
}
void LayoutMenuList::updateOptionsWidth() const {
float maxOptionWidth = 0;
for (const auto& option : selectElement()->optionList()) {
String text = option->textIndentedToRespectGroupLabel();
const ComputedStyle* itemStyle =
option->computedStyle() ? option->computedStyle() : style();
applyTextTransform(itemStyle, text, ' ');
// We apply SELECT's style, not OPTION's style because m_optionsWidth is
// used to determine intrinsic width of the menulist box.
TextRun textRun = constructTextRun(style()->font(), text, *style());
maxOptionWidth = std::max(maxOptionWidth, style()->font().width(textRun));
}
m_optionsWidth = static_cast<int>(ceilf(maxOptionWidth));
}
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);
}
int SVGInlineTextBox::offsetForPositionInFragment(const SVGTextFragment& fragment, float position, bool includePartialGlyphs) const
{
float scalingFactor = renderer().scalingFactor();
ASSERT(scalingFactor);
TextRun textRun = constructTextRun(&renderer().style(), fragment);
// Eventually handle lengthAdjust="spacingAndGlyphs".
// FIXME: Handle vertical text.
AffineTransform fragmentTransform;
fragment.buildFragmentTransform(fragmentTransform);
if (!fragmentTransform.isIdentity())
textRun.setHorizontalGlyphStretch(narrowPrecisionToFloat(fragmentTransform.xScale()));
return fragment.characterOffset - start() + renderer().scaledFont().offsetForPosition(textRun, position * scalingFactor, 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();
}
int SVGInlineTextBox::offsetForPositionInFragment(const SVGTextFragment& fragment, float position, bool includePartialGlyphs) const
{
RenderText* textRenderer = this->textRenderer();
ASSERT(textRenderer);
RenderStyle* style = textRenderer->style();
ASSERT(style);
TextRun textRun(constructTextRun(style, fragment));
// Eventually handle lengthAdjust="spacingAndGlyphs".
// FIXME: Handle vertical text.
if (!fragment.transform.isIdentity())
textRun.setHorizontalGlyphStretch(narrowPrecisionToFloat(fragment.transform.xScale()));
return fragment.positionListOffset - start() + style->font().offsetForPosition(textRun, position, includePartialGlyphs);
}
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();
}
int SVGInlineTextBox::offsetForPositionInFragment(const SVGTextFragment& fragment, FloatWillBeLayoutUnit position, bool includePartialGlyphs) const
{
LayoutSVGInlineText& textLayoutObject = toLayoutSVGInlineText(this->layoutObject());
float scalingFactor = textLayoutObject.scalingFactor();
ASSERT(scalingFactor);
const ComputedStyle& style = textLayoutObject.styleRef();
TextRun textRun = constructTextRun(style, fragment);
// Eventually handle lengthAdjust="spacingAndGlyphs".
// FIXME: Handle vertical text.
AffineTransform fragmentTransform;
fragment.buildFragmentTransform(fragmentTransform);
if (!fragmentTransform.isIdentity())
textRun.setHorizontalGlyphStretch(narrowPrecisionToFloat(fragmentTransform.xScale()));
return fragment.characterOffset - start() + textLayoutObject.scaledFont().offsetForPosition(textRun, position * scalingFactor, includePartialGlyphs);
}
void EllipsisBoxPainter::paintEllipsis(const PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, const ComputedStyle& style)
{
bool haveSelection = !paintInfo.isPrinting() && paintInfo.phase != PaintPhaseTextClip && m_ellipsisBox.getSelectionState() != SelectionNone;
LayoutRect paintRect(m_ellipsisBox.logicalFrameRect());
if (haveSelection)
paintRect.unite(LayoutRect(m_ellipsisBox.selectionRect()));
m_ellipsisBox.logicalRectToPhysicalRect(paintRect);
paintRect.moveBy(paintOffset);
GraphicsContext& context = paintInfo.context;
DisplayItem::Type displayItemType = DisplayItem::paintPhaseToDrawingType(paintInfo.phase);
if (DrawingRecorder::useCachedDrawingIfPossible(context, m_ellipsisBox, displayItemType))
return;
DrawingRecorder recorder(context, m_ellipsisBox, displayItemType, FloatRect(paintRect));
LayoutPoint boxOrigin = m_ellipsisBox.locationIncludingFlipping();
boxOrigin.moveBy(paintOffset);
LayoutRect boxRect(boxOrigin, LayoutSize(m_ellipsisBox.logicalWidth(), m_ellipsisBox.virtualLogicalHeight()));
GraphicsContextStateSaver stateSaver(context);
if (!m_ellipsisBox.isHorizontal())
context.concatCTM(TextPainter::rotation(boxRect, TextPainter::Clockwise));
const Font& font = style.font();
if (haveSelection)
paintSelection(context, boxOrigin, style, font);
else if (paintInfo.phase == PaintPhaseSelection)
return;
TextPainter::Style textStyle = TextPainter::textPaintingStyle(m_ellipsisBox.getLineLayoutItem(), style, paintInfo);
if (haveSelection)
textStyle = TextPainter::selectionPaintingStyle(m_ellipsisBox.getLineLayoutItem(), true, paintInfo, textStyle);
TextRun textRun = constructTextRun(font, m_ellipsisBox.ellipsisStr(), style, TextRun::AllowTrailingExpansion);
LayoutPoint textOrigin(boxOrigin.x(), boxOrigin.y() + font.getFontMetrics().ascent());
TextPainter textPainter(context, font, textRun, textOrigin, boxRect, m_ellipsisBox.isHorizontal());
textPainter.paint(0, m_ellipsisBox.ellipsisStr().length(), m_ellipsisBox.ellipsisStr().length(), textStyle);
}
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::paintSelection(GraphicsContext* context, const FloatPoint& boxOrigin, RenderStyle* style, const Font& font)
{
Color textColor = renderer().resolveColor(style, CSSPropertyColor);
Color c = renderer().selectionBackgroundColor();
if (!c.alpha())
return;
// If the text color ends up being the same as the selection background, invert the selection
// background.
if (textColor == c)
c = Color(0xff - c.red(), 0xff - c.green(), 0xff - c.blue());
GraphicsContextStateSaver stateSaver(*context);
LayoutUnit top = root().selectionTop();
LayoutUnit h = root().selectionHeight();
const int deltaY = roundToInt(logicalTop() - top);
const FloatPoint localOrigin(boxOrigin.x(), boxOrigin.y() - deltaY);
FloatRect clipRect(localOrigin, FloatSize(m_logicalWidth, h.toFloat()));
context->clip(clipRect);
context->drawHighlightForText(font, constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion), localOrigin, h, c);
}
