void RenderRubyRun::layout()
{
RenderBlockFlow::layout();
RenderRubyText* rt = rubyText();
if (!rt)
return;
rt->setLogicalLeft(0);
// Place the RenderRubyText such that its bottom is flush with the lineTop of the first line of the RenderRubyBase.
LayoutUnit lastLineRubyTextBottom = rt->logicalHeight();
LayoutUnit firstLineRubyTextTop = 0;
RootInlineBox* rootBox = rt->lastRootBox();
if (rootBox) {
// In order to align, we have to ignore negative leading.
firstLineRubyTextTop = rt->firstRootBox()->logicalTopLayoutOverflow();
lastLineRubyTextBottom = rootBox->logicalBottomLayoutOverflow();
}
if (isHorizontalWritingMode() && rt->style().rubyPosition() == RubyPositionInterCharacter) {
// Bopomofo. We need to move the RenderRubyText over to the right side and center it
// vertically relative to the base.
const Font& font = style().font();
float distanceBetweenBase = max(font.letterSpacing(), 2.0f * rt->style().font().fontMetrics().height());
setWidth(width() + distanceBetweenBase - font.letterSpacing());
if (RenderRubyBase* rb = rubyBase()) {
LayoutUnit firstLineTop = 0;
LayoutUnit lastLineBottom = logicalHeight();
RootInlineBox* rootBox = rb->firstRootBox();
if (rootBox)
firstLineTop = rootBox->logicalTopLayoutOverflow();
firstLineTop += rb->logicalTop();
if (rootBox)
lastLineBottom = rootBox->logicalBottomLayoutOverflow();
lastLineBottom += rb->logicalTop();
rt->setX(rb->x() + rb->width() - font.letterSpacing());
LayoutUnit extent = lastLineBottom - firstLineTop;
rt->setY(firstLineTop + (extent - rt->height()) / 2);
}
} else if (style().isFlippedLinesWritingMode() == (style().rubyPosition() == RubyPositionAfter)) {
LayoutUnit firstLineTop = 0;
if (RenderRubyBase* rb = rubyBase()) {
RootInlineBox* rootBox = rb->firstRootBox();
if (rootBox)
firstLineTop = rootBox->logicalTopLayoutOverflow();
firstLineTop += rb->logicalTop();
}
rt->setLogicalTop(-lastLineRubyTextBottom + firstLineTop);
} else {
LayoutUnit lastLineBottom = logicalHeight();
if (RenderRubyBase* rb = rubyBase()) {
RootInlineBox* rootBox = rb->lastRootBox();
if (rootBox)
lastLineBottom = rootBox->logicalBottomLayoutOverflow();
lastLineBottom += rb->logicalTop();
}
rt->setLogicalTop(-firstLineRubyTextTop + lastLineBottom);
}
// Update our overflow to account for the new RenderRubyText position.
computeOverflow(clientLogicalBottom());
}
void RenderLineBoxList::dirtyLinesFromChangedChild(RenderObject* container, RenderObject* child)
{
if (!container->parent() || (container->isRenderBlock() && (container->selfNeedsLayout() || !container->isBlockFlow())))
return;
// If we have no first line box, then just bail early.
if (!firstLineBox()) {
// For an empty inline, go ahead and propagate the check up to our parent, unless the parent
// is already dirty.
if (container->isInline() && !container->parent()->selfNeedsLayout())
container->parent()->dirtyLinesFromChangedChild(container);
return;
}
// Try to figure out which line box we belong in. First try to find a previous
// line box by examining our siblings. If we didn't find a line box, then use our
// parent's first line box.
RootInlineBox* box = 0;
RenderObject* curr = 0;
for (curr = child->previousSibling(); curr; curr = curr->previousSibling()) {
if (curr->isFloatingOrPositioned())
continue;
if (curr->isReplaced()) {
InlineBox* wrapper = toRenderBox(curr)->inlineBoxWrapper();
if (wrapper)
box = wrapper->root();
} else if (curr->isText()) {
InlineTextBox* textBox = toRenderText(curr)->lastTextBox();
if (textBox)
box = textBox->root();
} else if (curr->isRenderInline()) {
InlineFlowBox* flowBox = toRenderInline(curr)->lastLineBox();
if (flowBox)
box = flowBox->root();
}
if (box)
break;
}
if (!box)
box = firstLineBox()->root();
// If we found a line box, then dirty it.
if (box) {
RootInlineBox* adjacentBox;
box->markDirty();
// dirty the adjacent lines that might be affected
// NOTE: we dirty the previous line because RootInlineBox objects cache
// the address of the first object on the next line after a BR, which we may be
// invalidating here. For more info, see how RenderBlock::layoutInlineChildren
// calls setLineBreakInfo with the result of findNextLineBreak. findNextLineBreak,
// despite the name, actually returns the first RenderObject after the BR.
// <rdar://problem/3849947> "Typing after pasting line does not appear until after window resize."
adjacentBox = box->prevRootBox();
if (adjacentBox)
adjacentBox->markDirty();
if (child->isBR() || (curr && curr->isBR())) {
adjacentBox = box->nextRootBox();
if (adjacentBox)
adjacentBox->markDirty();
}
}
}
void RenderLineBoxList::dirtyLinesFromChangedChild(RenderBoxModelObject* container, RenderObject* child)
{
ASSERT(container->isRenderInline() || container->isRenderBlockFlow());
if (!container->parent() || (container->isRenderBlockFlow() && container->selfNeedsLayout()))
return;
RenderInline* inlineContainer = container->isRenderInline() ? toRenderInline(container) : 0;
InlineBox* firstBox = inlineContainer ? inlineContainer->firstLineBoxIncludingCulling() : firstLineBox();
// If we have no first line box, then just bail early.
if (!firstBox) {
// For an empty inline, go ahead and propagate the check up to our parent, unless the parent
// is already dirty.
if (container->isInline() && !container->ancestorLineBoxDirty()) {
container->parent()->dirtyLinesFromChangedChild(container);
container->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree.
}
return;
}
// Try to figure out which line box we belong in. First try to find a previous
// line box by examining our siblings. If we didn't find a line box, then use our
// parent's first line box.
RootInlineBox* box = nullptr;
RenderObject* current;
for (current = child->previousSibling(); current; current = current->previousSibling()) {
if (current->isFloatingOrOutOfFlowPositioned())
continue;
if (current->isReplaced()) {
if (auto wrapper = downcast<RenderBox>(*current).inlineBoxWrapper())
box = &wrapper->root();
} if (is<RenderLineBreak>(*current)) {
if (auto wrapper = downcast<RenderLineBreak>(*current).inlineBoxWrapper())
box = &wrapper->root();
} else if (is<RenderText>(*current)) {
if (InlineTextBox* textBox = downcast<RenderText>(*current).lastTextBox())
box = &textBox->root();
} else if (is<RenderInline>(*current)) {
InlineBox* lastSiblingBox = downcast<RenderInline>(*current).lastLineBoxIncludingCulling();
if (lastSiblingBox)
box = &lastSiblingBox->root();
}
if (box)
break;
}
if (!box) {
if (inlineContainer && !inlineContainer->alwaysCreateLineBoxes()) {
// https://bugs.webkit.org/show_bug.cgi?id=60778
// We may have just removed a <br> with no line box that was our first child. In this case
// we won't find a previous sibling, but firstBox can be pointing to a following sibling.
// This isn't good enough, since we won't locate the root line box that encloses the removed
// <br>. We have to just over-invalidate a bit and go up to our parent.
if (!inlineContainer->ancestorLineBoxDirty()) {
inlineContainer->parent()->dirtyLinesFromChangedChild(inlineContainer);
inlineContainer->setAncestorLineBoxDirty(); // Mark the container to avoid dirtying the same lines again across multiple destroy() calls of the same subtree.
}
return;
}
box = &firstBox->root();
}
// If we found a line box, then dirty it.
if (box) {
RootInlineBox* adjacentBox;
box->markDirty();
// dirty the adjacent lines that might be affected
// NOTE: we dirty the previous line because RootInlineBox objects cache
// the address of the first object on the next line after a BR, which we may be
// invalidating here. For more info, see how RenderBlock::layoutInlineChildren
// calls setLineBreakInfo with the result of findNextLineBreak. findNextLineBreak,
// despite the name, actually returns the first RenderObject after the BR.
// <rdar://problem/3849947> "Typing after pasting line does not appear until after window resize."
adjacentBox = box->prevRootBox();
if (adjacentBox)
adjacentBox->markDirty();
adjacentBox = box->nextRootBox();
// If |child| has been inserted before the first element in the linebox, but after collapsed leading
// space, the search for |child|'s linebox will go past the leading space to the previous linebox and select that
// one as |box|. If we hit that situation here, dirty the |box| actually containing the child too.
bool insertedAfterLeadingSpace = box->lineBreakObj() == child->previousSibling();
if (adjacentBox && (adjacentBox->lineBreakObj() == child || child->isBR() || (current && current->isBR())
|| insertedAfterLeadingSpace || isIsolated(container->style().unicodeBidi())))
adjacentBox->markDirty();
}
}
RootInlineBox* RenderSVGText::createRootInlineBox()
{
RootInlineBox* box = new (renderArena()) SVGRootInlineBox(this);
box->setHasVirtualLogicalHeight();
return box;
}
