void LayoutListMarker::computePreferredLogicalWidths()
{
ASSERT(preferredLogicalWidthsDirty());
updateContent();
if (isImage()) {
LayoutSize imageSize(imageBulletSize());
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = style()->isHorizontalWritingMode() ? imageSize.width() : imageSize.height();
clearPreferredLogicalWidthsDirty();
updateMargins();
return;
}
const Font& font = style()->font();
LayoutUnit logicalWidth;
switch (listStyleCategory()) {
case ListStyleCategory::None:
break;
case ListStyleCategory::Symbol:
logicalWidth = LayoutUnit((font.fontMetrics().ascent() * 2 / 3 + 1) / 2 + 2);
break;
case ListStyleCategory::Language:
logicalWidth = getWidthOfTextWithSuffix();
break;
}
m_minPreferredLogicalWidth = logicalWidth;
m_maxPreferredLogicalWidth = logicalWidth;
clearPreferredLogicalWidthsDirty();
updateMargins();
}
IntRect LayoutListMarker::getRelativeMarkerRect() const
{
if (isImage()) {
IntSize imageSize = flooredIntSize(imageBulletSize());
return IntRect(0, 0, imageSize.width(), imageSize.height());
}
IntRect relativeRect;
switch (listStyleCategory()) {
case ListStyleCategory::None:
return IntRect();
case ListStyleCategory::Symbol: {
// TODO(wkorman): Review and clean up/document the calculations below.
// http://crbug.com/543193
const FontMetrics& fontMetrics = style()->fontMetrics();
int ascent = fontMetrics.ascent();
int bulletWidth = (ascent * 2 / 3 + 1) / 2;
relativeRect = IntRect(1, 3 * (ascent - ascent * 2 / 3) / 2, bulletWidth, bulletWidth);
}
break;
case ListStyleCategory::Language:
relativeRect = IntRect(0, 0, getWidthOfTextWithSuffix(), style()->font().fontMetrics().height());
break;
}
if (!style()->isHorizontalWritingMode()) {
relativeRect = relativeRect.transposedRect();
relativeRect.setX(size().width() - relativeRect.x() - relativeRect.width());
}
return relativeRect;
}
void LayoutListMarker::layout()
{
ASSERT(needsLayout());
LayoutAnalyzer::Scope analyzer(*this);
if (isImage()) {
updateMarginsAndContent();
LayoutSize imageSize(imageBulletSize());
setWidth(imageSize.width());
setHeight(imageSize.height());
} else {
setLogicalWidth(minPreferredLogicalWidth());
setLogicalHeight(LayoutUnit(style()->fontMetrics().height()));
}
setMarginStart(LayoutUnit());
setMarginEnd(LayoutUnit());
Length startMargin = style()->marginStart();
Length endMargin = style()->marginEnd();
if (startMargin.isFixed())
setMarginStart(LayoutUnit(startMargin.value()));
if (endMargin.isFixed())
setMarginEnd(LayoutUnit(endMargin.value()));
clearNeedsLayout();
}
void LayoutListMarker::imageChanged(WrappedImagePtr o, const IntRect*)
{
// A list marker can't have a background or border image, so no need to call the base class method.
if (o != m_image->data())
return;
LayoutSize imageSize = isImage() ? imageBulletSize() : LayoutSize();
if (size() != imageSize || m_image->errorOccurred())
setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::ImageChanged);
else
setShouldDoFullPaintInvalidation();
}
void LayoutListMarker::layout() {
ASSERT(needsLayout());
LayoutAnalyzer::Scope analyzer(*this);
LayoutUnit blockOffset;
for (LayoutBox* o = parentBox(); o && o != listItem(); o = o->parentBox()) {
blockOffset += o->logicalTop();
}
if (listItem()->style()->isLeftToRightDirection()) {
m_lineOffset = listItem()->logicalLeftOffsetForLine(
blockOffset, DoNotIndentText, LayoutUnit());
} else {
m_lineOffset = listItem()->logicalRightOffsetForLine(
blockOffset, DoNotIndentText, LayoutUnit());
}
if (isImage()) {
updateMarginsAndContent();
LayoutSize imageSize(imageBulletSize());
setWidth(imageSize.width());
setHeight(imageSize.height());
} else {
const SimpleFontData* fontData = style()->font().primaryFont();
DCHECK(fontData);
setLogicalWidth(minPreferredLogicalWidth());
setLogicalHeight(
LayoutUnit(fontData ? fontData->getFontMetrics().height() : 0));
}
setMarginStart(LayoutUnit());
setMarginEnd(LayoutUnit());
Length startMargin = style()->marginStart();
Length endMargin = style()->marginEnd();
if (startMargin.isFixed())
setMarginStart(LayoutUnit(startMargin.value()));
if (endMargin.isFixed())
setMarginEnd(LayoutUnit(endMargin.value()));
clearNeedsLayout();
}
