+// ChatLine(int row, QAbstractItemModel *model, QGraphicsItem *parent = 0);
+ ChatLine(int row, QAbstractItemModel *model,
+ const qreal &width,
+ const qreal ×tampWidth, const qreal &senderWidth, const qreal &contentsWidth,
+ const QPointF &senderPos, const QPointF &contentsPos,
+ QGraphicsItem *parent = 0);