int KTextDocumentLayout::hitTestIterated(QTextFrame::iterator begin, QTextFrame::iterator end, const QPointF &point, Qt::HitTestAccuracy accuracy) const
{
int position = -1;
QTextFrame::iterator it = begin;
for (it = begin; it != end; ++it) {
QTextBlock block = it.currentBlock();
QTextTable *table = qobject_cast<QTextTable*>(it.currentFrame());
QTextFrame *subFrame = it.currentFrame();
if (table) {
QTextTableCell cell = m_state->hitTestTable(table, point);
if (cell.isValid()) {
position = hitTestIterated(cell.begin(), cell.end(), point,
accuracy);
if (position == -1)
position = cell.lastPosition();
return position;
}
continue;
} else if (subFrame) {
position = hitTestIterated(subFrame->begin(), subFrame->end(), point, accuracy);
if (position != -1)
return position;
continue;
} else {
if (!block.isValid())
continue;
}
// kDebug(32500) <<"hitTest[" << point.x() <<"," << point.y() <<"]";
QTextLayout *layout = block.layout();
if (point.y() > layout->boundingRect().bottom()) {
// just skip this block. position = block.position() + block.length() - 1;
continue;
}
for (int i = 0; i < layout->lineCount(); i++) {
QTextLine line = layout->lineAt(i);
// kDebug(32500) <<" + line[" << line.textStart() <<"]:" << line.y() <<"-" << line.height();
if (point.y() > line.y() + line.height()) {
position = line.textStart() + line.textLength();
continue;
}
if (accuracy == Qt::ExactHit && point.y() < line.y()) // between lines
return -1;
if (accuracy == Qt::ExactHit && // left or right of line
(point.x() < line.x() || point.x() > line.x() + line.width()))
return -1;
if (point.x() > line.width() && layout->textOption().textDirection() == Qt::RightToLeft) {
// totally right of RTL text means the position is the start of the text.
return block.position() + line.textStart();
}
return block.position() + line.xToCursor(point.x());
}
}
return -1;
}