static void closeLineEndingAndAdjustRuns(LineState& line, Layout::RunVector& runs, unsigned previousRunCount, unsigned& lineCount, const TextFragmentIterator& textFragmentIterator)
{
if (previousRunCount == runs.size())
return;
ASSERT(runs.size());
removeTrailingWhitespace(line, runs, textFragmentIterator);
if (!runs.size())
return;
// Adjust runs' position by taking line's alignment into account.
if (float lineLogicalLeft = computeLineLeft(textFragmentIterator.style().textAlign, line.availableWidth(), line.width(), line.logicalLeftOffset())) {
for (unsigned i = previousRunCount; i < runs.size(); ++i) {
runs[i].logicalLeft += lineLogicalLeft;
runs[i].logicalRight += lineLogicalLeft;
}
}
runs.last().isEndOfLine = true;
++lineCount;
}
static void revertRuns(Layout::RunVector& runs, unsigned length, float width)
{
while (length) {
ASSERT(runs.size());
Run& lastRun = runs.last();
unsigned lastRunLength = lastRun.end - lastRun.start;
if (lastRunLength > length) {
lastRun.logicalRight -= width;
lastRun.end -= length;
break;
}
length -= lastRunLength;
width -= (lastRun.logicalRight - lastRun.logicalLeft);
runs.removeLast();
}
}
static void createTextRuns(Layout::RunVector& runs, RenderBlockFlow& flow, unsigned& lineCount)
{
LayoutUnit borderAndPaddingBefore = flow.borderAndPaddingBefore();
LayoutUnit lineHeight = lineHeightFromFlow(flow);
LineState line;
bool isEndOfContent = false;
TextFragmentIterator textFragmentIterator = TextFragmentIterator(flow);
do {
flow.setLogicalHeight(lineHeight * lineCount + borderAndPaddingBefore);
LineState previousLine = line;
unsigned previousRunCount = runs.size();
line = LineState();
updateLineConstrains(flow, line, !lineCount);
isEndOfContent = createLineRuns(line, previousLine, runs, textFragmentIterator);
closeLineEndingAndAdjustRuns(line, runs, previousRunCount, lineCount, textFragmentIterator);
} while (!isEndOfContent);
}