IntRect Editor::firstRectForRange(Range* range) const
{
LayoutUnit extraWidthToEndOfLine = 0;
ASSERT(range->startContainer());
ASSERT(range->endContainer());
IntRect startCaretRect = RenderedPosition(VisiblePosition(range->startPosition()).deepEquivalent(), DOWNSTREAM).absoluteRect(&extraWidthToEndOfLine);
if (startCaretRect == LayoutRect())
return IntRect();
IntRect endCaretRect = RenderedPosition(VisiblePosition(range->endPosition()).deepEquivalent(), UPSTREAM).absoluteRect();
if (endCaretRect == LayoutRect())
return IntRect();
if (startCaretRect.y() == endCaretRect.y()) {
// start and end are on the same line
return IntRect(std::min(startCaretRect.x(), endCaretRect.x()),
startCaretRect.y(),
abs(endCaretRect.x() - startCaretRect.x()),
std::max(startCaretRect.height(), endCaretRect.height()));
}
// start and end aren't on the same line, so go from start to the end of its line
return IntRect(startCaretRect.x(),
startCaretRect.y(),
startCaretRect.width() + extraWidthToEndOfLine,
startCaretRect.height());
}
RenderedPosition RenderedPosition::rightBoundaryOfBidiRun(unsigned char bidiLevelOfRun)
{
if (!m_inlineBox || bidiLevelOfRun > m_inlineBox->bidiLevel())
return RenderedPosition();
InlineBox* box = m_inlineBox;
do {
InlineBox* next = box->nextLeafChildIgnoringLineBreak();
if (!next || next->bidiLevel() < bidiLevelOfRun)
return RenderedPosition(&box->layoutObject(), box, box->caretRightmostOffset());
box = next;
} while (box);
ASSERT_NOT_REACHED();
return RenderedPosition();
}
RenderedPosition RenderedPosition::leftBoundaryOfBidiRun(unsigned char bidiLevelOfRun)
{
if (!m_inlineBox || bidiLevelOfRun > m_inlineBox->bidiLevel())
return RenderedPosition();
InlineBox* box = m_inlineBox;
do {
InlineBox* prev = box->prevLeafChildIgnoringLineBreak();
if (!prev || prev->bidiLevel() < bidiLevelOfRun)
return RenderedPosition(&box->layoutObject(), box, box->caretLeftmostOffset());
box = prev;
} while (box);
ASSERT_NOT_REACHED();
return RenderedPosition();
}