- return _lineHeight; // only contents can be multi-line
-
- QVariantList wrapList = data(ChatLineModel::WrapListRole).toList();
- int lines = 1;
- int offset = 0;
- for(int i = 0; i < wrapList.count(); i+=2) {
- if(wrapList.at(i+1).toUInt() - offset < width) continue;
- lines++;
- if(i > 0) {
- if(offset < wrapList.at(i-1).toUInt()) offset = wrapList.at(i-1).toUInt();
- else offset += width;
- } else {
- offset += width;
- }
- i-=2;
- }
- return lines * _lineHeight;
-}
-
-void ChatItem::layout() {
- if(_layout) return;
- _layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
-
- // Convert format information into a FormatRange
- QList<QTextLayout::FormatRange> formatRanges;
- UiStyle::FormatList formatList = data(MessageModel::FormatRole).value<UiStyle::FormatList>();
- QTextLayout::FormatRange range;
- int i = 0;
- for(i = 0; i < formatList.count(); i++) {
- range.format = QtUi::style()->mergedFormat(formatList.at(i).second);
- range.start = formatList.at(i).first;
- if(i > 0) formatRanges.last().length = range.start - formatRanges.last().start;
- formatRanges.append(range);
- }
- if(i > 0) formatRanges.last().length = _layout->text().length() - formatRanges.last().start;
- _layout->setAdditionalFormats(formatRanges);
-
- // Now layout
- qreal h = 0;
- _layout->beginLayout();
- forever {
- QTextLine line = _layout->createLine();
- if (!line.isValid())
+ return fontMetrics()->lineSpacing(); // only contents can be multi-line
+
+ _lines = 1;
+ WrapColumnFinder finder(this);
+ while(finder.nextWrapColumn() > 0) _lines++;
+ return _lines * fontMetrics()->lineSpacing();
+}
+
+QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) {
+ QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
+
+ QTextOption option;
+ option.setWrapMode(wrapMode);
+ option.setAlignment(alignment);
+ layout->setTextOption(option);
+
+ QList<QTextLayout::FormatRange> formatRanges
+ = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
+ layout->setAdditionalFormats(formatRanges);
+ return layout;
+}
+
+void ChatItem::updateLayout() {
+ switch(data(ChatLineModel::ColumnTypeRole).toUInt()) {
+ case ChatLineModel::TimestampColumn:
+ if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignLeft);
+ // fallthrough
+ case ChatLineModel::SenderColumn:
+ if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignRight);
+ _layout->beginLayout();
+ {
+ QTextLine line = _layout->createLine();
+ if(line.isValid()) {
+ line.setLineWidth(width());
+ line.setPosition(QPointF(0, fontMetrics()->leading()));
+ }
+ _layout->endLayout();
+ }