* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+#include <QFontMetrics>
+#include <QTextBoundaryFinder>
+
#include "chatlinemodelitem.h"
#include "chatlinemodel.h"
#include "qtui.h"
#include "uistyle.h"
-ChatlineModelItem::ChatlineModelItem(const Message &msg) : MessageModelItem(msg) {
+ChatLineModelItem::ChatLineModelItem(const Message &msg) : MessageModelItem(msg) {
QtUiStyle::StyledMessage m = QtUi::style()->styleMessage(msg);
_timestamp.plainText = m.timestamp.plainText;
_sender.formatList = m.sender.formatList;
_contents.formatList = m.contents.formatList;
+ computeWrapList();
}
-QVariant ChatlineModelItem::data(int column, int role) const {
- const ChatlinePart *part;
+QVariant ChatLineModelItem::data(int column, int role) const {
+ const ChatLinePart *part;
switch(column) {
- case ChatlineModel::TimestampColumn: part = &_timestamp; break;
- case ChatlineModel::SenderColumn: part = &_sender; break;
- case ChatlineModel::TextColumn: part = &_contents; break;
+ case ChatLineModel::TimestampColumn: part = &_timestamp; break;
+ case ChatLineModel::SenderColumn: part = &_sender; break;
+ case ChatLineModel::ContentsColumn: part = &_contents; break;
default: return MessageModelItem::data(column, role);
}
switch(role) {
- case ChatlineModel::DisplayRole: return part->plainText;
- case ChatlineModel::FormatRole: return QVariant::fromValue<UiStyle::FormatList>(part->formatList);
+ case ChatLineModel::DisplayRole:
+ return part->plainText;
+ case ChatLineModel::FormatRole:
+ return QVariant::fromValue<UiStyle::FormatList>(part->formatList);
+ case ChatLineModel::WrapListRole:
+ if(column != ChatLineModel::ContentsColumn) return QVariant();
+ return QVariant::fromValue<ChatLineModel::WrapList>(_wrapList);
}
return MessageModelItem::data(column, role);
}
-bool ChatlineModelItem::setData(int column, const QVariant &value, int role) {
+bool ChatLineModelItem::setData(int column, const QVariant &value, int role) {
return false;
}
+
+// compute the width of a text snippet
+qreal ChatLineModelItem::snippetWidth(int start, int end, QFontMetricsF *&metrics, int &formatListIdx, int &formatEnd) {
+ qreal width = 0;
+ while(start < end) {
+ if(formatEnd <= start) {
+ formatListIdx++;
+ formatEnd = _contents.formatList.count() > formatListIdx+1 ? _contents.formatList[formatListIdx+1].first
+ : _contents.plainText.length();
+ metrics = QtUi::style()->fontMetrics(_contents.formatList[formatListIdx].second);
+ Q_ASSERT(formatEnd > start);
+ }
+ int i = qMin(end, formatEnd);
+ width += metrics->width(_contents.plainText.mid(start, i - start));
+ start = i;
+ }
+ return width;
+}
+
+void ChatLineModelItem::computeWrapList() {
+ enum Mode { SearchStart, SearchEnd };
+
+ QList<ChatLineModel::Word> wplist; // use a temp list which we'll later copy into a QVector for efficiency
+ QTextBoundaryFinder finder(QTextBoundaryFinder::Word, _contents.plainText);
+ int idx, oldidx;
+ qreal pxpos = 0;
+ int flistidx = -1;
+ int fmtend = -1;
+ bool wordStart = false; bool wordEnd = false;
+ QFontMetricsF *metrics = 0;
+ Mode mode = SearchEnd;
+ ChatLineModel::Word word;
+ word.start = 0;
+ do {
+ idx = finder.toNextBoundary();
+ if(idx < 0) idx = _contents.plainText.length();
+ wordStart = finder.boundaryReasons().testFlag(QTextBoundaryFinder::StartWord);
+ wordEnd = finder.boundaryReasons().testFlag(QTextBoundaryFinder::EndWord);
+
+ //qDebug() << wordStart << wordEnd << _contents.plainText.left(idx) << _contents.plainText.mid(idx);
+
+ if(mode == SearchEnd || !wordStart && wordEnd) {
+ if(wordStart || !wordEnd) continue;
+ oldidx = idx;
+ mode = SearchStart;
+ continue;
+ }
+ // mode == SearchStart
+ word.width = snippetWidth(word.start, oldidx, metrics, flistidx, fmtend);
+ word.trailing = snippetWidth(oldidx, idx, metrics, flistidx, fmtend);
+ wplist.append(word);
+
+ if(wordStart) {
+ word.start = idx;
+ mode = SearchEnd;
+ }
+ } while(finder.isAtBoundary());
+
+ // A QVector needs less space than a QList
+ _wrapList.resize(wplist.count());
+ for(int i = 0; i < wplist.count(); i++) {
+ _wrapList[i] = wplist.at(i);
+ }
+}
+