QVector<QTextLayout::FormatRange> ChatItem::selectionFormats() const
{
if (!hasSelection())
return QVector<QTextLayout::FormatRange>();
int start, end;
if (_selectionMode == FullSelection) {
start = 0;
end = data(MessageModel::DisplayRole).toString().length();
}
else {
start = qMin(_selectionStart, _selectionEnd);
end = qMax(_selectionStart, _selectionEnd);
}
UiStyle::FormatList fmtList = formatList();
while (fmtList.count() > 1 && fmtList.at(1).first <= start)
fmtList.removeFirst();
fmtList.first().first = start;
while (fmtList.count() > 1 && fmtList.last().first >= end)
fmtList.removeLast();
return QtUi::style()->toTextLayoutList(fmtList, end, UiStyle::Selected|data(ChatLineModel::MsgLabelRole).toUInt()).toVector();
}
void ChatItem::overlayFormat(UiStyle::FormatList &fmtList, int start, int end, quint32 overlayFmt) const {
for(int i = 0; i < fmtList.count(); i++) {
int fmtStart = fmtList.at(i).first;
int fmtEnd = (i < fmtList.count()-1 ? fmtList.at(i+1).first : data(MessageModel::DisplayRole).toString().length());
if(fmtEnd <= start)
continue;
if(fmtStart >= end)
break;
// split the format if necessary
if(fmtStart < start) {
fmtList.insert(i, fmtList.at(i));
fmtList[++i].first = start;
}
if(end < fmtEnd) {
fmtList.insert(i, fmtList.at(i));
fmtList[i+1].first = end;
}
fmtList[i].second |= overlayFmt;
}
}