void YTDelegate::layoutText(QTextLayout& textLayout, QString text, QSize constraint) const { QTextOption textOption(Qt::AlignJustify); textLayout.setTextOption(textOption); textLayout.setText(text); textLayout.beginLayout(); int lHeight = 0; while(true){ QTextLine line = textLayout.createLine(); if(!line.isValid()) break; line.setLineWidth(constraint.width()); line.setPosition(QPointF(0, lHeight)); if(lHeight + line.height() > constraint.height()) { QTextLine lastLine = textLayout.lineAt(textLayout.lineCount() - 2); QString lastString = text.mid(lastLine.textStart()); QFontMetrics fm(textLayout.font()); text.chop(lastString.length()); text += fm.elidedText(lastString, Qt::ElideRight, constraint.width()-1); textLayout.endLayout(); layoutText(textLayout, text, constraint); return; } lHeight += line.height(); lHeight += line.leading(); } textLayout.endLayout(); }