// FIXME: The entire concept of the skipTrailingWhitespace function is flawed, since we really need to be building
// line boxes even for containers that may ultimately collapse away. Otherwise we'll never get positioned
// elements quite right. In other words, we need to build this function's work into the normal line
// object iteration process.
// NB. this function will insert any floating elements that would otherwise
// be skipped but it will not position them.
void LineBreaker::skipTrailingWhitespace(InlineIterator& iterator, const LineInfo& lineInfo)
{
while (!iterator.atEnd() && !requiresLineBox(iterator, lineInfo, TrailingWhitespace)) {
RenderObject& object = *iterator.renderer();
if (object.isOutOfFlowPositioned())
setStaticPositions(m_block, downcast<RenderBox>(object));
else if (object.isFloating())
m_block.insertFloatingObject(downcast<RenderBox>(object));
iterator.increment();
}
}
void TrailingObjects::updateMidpointsForTrailingObjects(LineMidpointState& lineMidpointState, const InlineIterator& lBreak, CollapseFirstSpaceOrNot collapseFirstSpace)
{
if (!m_whitespace)
return;
// This object is either going to be part of the last midpoint, or it is going to be the actual endpoint.
// In both cases we just decrease our pos by 1 level to exclude the space, allowing it to - in effect - collapse into the newline.
if (lineMidpointState.numMidpoints() % 2) {
// Find the trailing space object's midpoint.
int trailingSpaceMidpoint = lineMidpointState.numMidpoints() - 1;
for ( ; trailingSpaceMidpoint > 0 && lineMidpointState.midpoints()[trailingSpaceMidpoint].object() != m_whitespace; --trailingSpaceMidpoint) { }
ASSERT(trailingSpaceMidpoint >= 0);
if (collapseFirstSpace == CollapseFirstSpace)
lineMidpointState.midpoints()[trailingSpaceMidpoint].setOffset(lineMidpointState.midpoints()[trailingSpaceMidpoint].offset() -1);
// Now make sure every single trailingPositionedBox following the trailingSpaceMidpoint properly stops and starts
// ignoring spaces.
size_t currentMidpoint = trailingSpaceMidpoint + 1;
for (size_t i = 0; i < m_objects.size(); ++i) {
if (currentMidpoint >= lineMidpointState.numMidpoints()) {
// We don't have a midpoint for this box yet.
lineMidpointState.ensureLineBoxInsideIgnoredSpaces(m_objects[i]);
} else {
ASSERT(lineMidpointState.midpoints()[currentMidpoint].object() == m_objects[i]);
ASSERT(lineMidpointState.midpoints()[currentMidpoint + 1].object() == m_objects[i]);
}
currentMidpoint += 2;
}
} else if (!lBreak.object()) {
ASSERT(m_whitespace->isText());
ASSERT(collapseFirstSpace == CollapseFirstSpace);
// Add a new end midpoint that stops right at the very end.
unsigned length = m_whitespace->textLength();
unsigned pos = length >= 2 ? length - 2 : UINT_MAX;
InlineIterator endMid(0, m_whitespace, pos);
lineMidpointState.startIgnoringSpaces(endMid);
for (size_t i = 0; i < m_objects.size(); ++i) {
lineMidpointState.ensureLineBoxInsideIgnoredSpaces(m_objects[i]);
}
}
}
LineSegmentRange::LineSegmentRange(const InlineIterator& start, const InlineIterator& end)
: start(start.root(), start.object(), start.offset())
, end(end.root(), end.object(), end.offset())
{
}
