......
    QTextDocument doc(this);
    doc.setHtml(_sticker.text());
    doc.setPageSize(r.size());
..........
    QTextOption text_opt;
    text_opt.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
    text_opt.setFlags(text_opt.flags() | QTextOption::SuppressColors);
..........
    doc.setDefaultTextOption(text_opt);

    QAbstractTextDocumentLayout::PaintContext ctx;
    ctx.palette.setColor(QPalette::Text, _shape.pen().color());
    ctx.clip = QRectF(QPointF(0,0), r.size());
.........
    doc.documentLayout()->draw(painter, ctx);

......