}
ChatItem::~ChatItem() {
-
+ delete _layout;
}
QVariant ChatItem::data(int role) const {
int ChatItem::setWidth(int w) {
w -= 10;
if(w == _boundingRect.width()) return _boundingRect.height();
- int h = heightForWidth(w);
_boundingRect.setWidth(w);
+ int h = heightForWidth(w);
_boundingRect.setHeight(h);
if(haveLayout()) updateLayout();
return h;
if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
return fontMetrics()->lineSpacing(); // only contents can be multi-line
- ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
_lines = 1;
- qreal w = 0;
- for(int i = 0; i < wrapList.count(); i++) {
- w += wrapList.at(i).width;
- if(w <= width) {
- w += wrapList.at(i).trailing;
- continue;
- }
- _lines++;
- w = wrapList.at(i).width;
- while(w >= width) { // handle words longer than a line
- _lines++;
- // We do not want to compute an exact split position (that would require us to calculate glyph widths
- // and also apply formats in this step...)
- // Just using width should be a good estimate, but since a character can't be split in the middle, we
- // subtract averageCharWidth as well... sometimes this won't be enough, but meh.
- w -= width - 4*fontMetrics()->averageCharWidth();
+ WrapColumnFinder finder(this);
+ while(finder.nextWrapColumn() > 0) _lines++;
+ return _lines * fontMetrics()->lineSpacing();
+}
+
+ChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item) : item(_item) {
+ wrapList = item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+ wordidx = 0;
+ layout = 0;
+ lastwrapcol = 0;
+ lastwrappos = 0;
+ w = 0;
+}
+
+ChatItem::WrapColumnFinder::~WrapColumnFinder() {
+ delete layout;
+}
+
+int ChatItem::WrapColumnFinder::nextWrapColumn() {
+ while(wordidx < wrapList.count()) {
+ w += wrapList.at(wordidx).width;
+ if(w >= item->width()) {
+ if(lastwrapcol >= wrapList.at(wordidx).start) {
+ // first word, and it doesn't fit
+ if(!line.isValid()) {
+ layout = item->createLayout(QTextOption::NoWrap);
+ layout->beginLayout();
+ line = layout->createLine();
+ line.setLineWidth(item->width());
+ layout->endLayout();
+ }
+ int idx = line.xToCursor(lastwrappos + item->width(), QTextLine::CursorOnCharacter);
+ qreal x = line.cursorToX(idx, QTextLine::Trailing);
+ w = w - wrapList.at(wordidx).width - (x - lastwrappos);
+ lastwrappos = x;
+ lastwrapcol = idx;
+ return idx;
+ }
+ // not the first word, so just wrap before this
+ lastwrapcol = wrapList.at(wordidx).start;
+ lastwrappos = lastwrappos + w - wrapList.at(wordidx).width;
+ w = 0;
+ return lastwrapcol;
}
+ w += wrapList.at(wordidx).trailing;
+ wordidx++;
}
- return _lines * fontMetrics()->lineSpacing();
+ return -1;
}
-void ChatItem::layout() {
- if(haveLayout()) return;
- _layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
+QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode) {
+ QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
QTextOption option;
- option.setWrapMode(QTextOption::WrapAnywhere);
- _layout->setTextOption(option);
-
- // 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);
- updateLayout();
+ option.setWrapMode(wrapMode);
+ 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() {
- if(!haveLayout()) layout();
+ if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere);
// Now layout
ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
ChatLineModel::Word word = wrapList.at(0);
qreal h = 0;
+ WrapColumnFinder finder(this);
_layout->beginLayout();
forever {
QTextLine line = _layout->createLine();
if (!line.isValid())
break;
- if(word.width >= width()) {
- line.setLineWidth(width());
- word.width -= line.naturalTextWidth();
- word.start = line.textStart() + line.textLength();
- //qDebug() << "setting width: " << width();
- } else {
- int w = 0;
- while((w += word.width) <= width() && wordidx < wrapList.count()) {
- w += word.trailing;
- if(++wordidx < wrapList.count()) word = wrapList.at(wordidx);
- else {
- // last word (and it fits), but if we expected an extra line, wrap anyway here
- // yeah, this is cheating, but much cheaper than computing widths ourself
- if(_layout->lineCount() < _lines) {
- wordidx--; qDebug() << "trigger!" << _lines << _layout->text();
- break;
- }
- }
- }
- int lastcol = wordidx < wrapList.count() ? word.start : _layout->text().length();
- line.setNumColumns(lastcol - line.textStart());// qDebug() << "setting cols:" << lastcol - line.textStart();
- }
+ int col = finder.nextWrapColumn();
+ line.setNumColumns(col >= 0 ? col - line.textStart() : _layout->text().length());
h += fontMetrics()->leading();
line.setPosition(QPointF(0, h));
_layout = 0;
}
+//int ChatItem::findNextWrapColumn(
+
void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
Q_UNUSED(option); Q_UNUSED(widget);
- layout();
+ if(!haveLayout()) updateLayout();
_layout->draw(painter, QPointF(0,0), QVector<QTextLayout::FormatRange>(), boundingRect());
painter->drawRect(boundingRect());
int width = 0;
}
}
-/*
-void ChatItem::layout() {
- if(!_layout.additionalFormats().count()) return; // no text set
- if(_width <= 0) return;
- prepareGeometryChange();
- QFontMetrics metrics(_layout.additionalFormats()[0].format.font());
- int leading = metrics.leading();
- int height = 0;
- _layout.setTextOption(textOption());
- _layout.beginLayout();
- while(1) {
- QTextLine line = _layout.createLine();
- if(!line.isValid()) break;
- line.setLineWidth(_width);
- if(textOption().wrapMode() != QTextOption::NoWrap && line.naturalTextWidth() > _width) {
- // word did not fit, we need to wrap it in the middle
- // this is a workaround for Qt failing to handle WrapAtWordBoundaryOrAnywhere correctly
- QTextOption::WrapMode mode = textOption().wrapMode();
- textOption().setWrapMode(QTextOption::WrapAnywhere);
- _layout.setTextOption(textOption());
- line.setLineWidth(_width);
- textOption().setWrapMode(mode);
- _layout.setTextOption(textOption());
- }
- height += leading;
- line.setPosition(QPoint(0, height));
- height += line.height();
- }
- _layout.endLayout();
- update();
-} QDateTime _timestamp;
- MsgId _msgId;
-
-
-QRectF ChatItem::boundingRect() const {
- return _layout.boundingRect();
-}
-
-void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
- Q_UNUSED(option); Q_UNUSED(widget);
- _layout.draw(painter, QPointF(0, 0));
-
-}
-*/
-
/*
void ChatItem::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
qDebug() << (void*)this << "moving" << event->pos();
projects / quassel.git / blobdiff