+class ChatLine : public QGraphicsItem
+{
+public:
+ ChatLine(int row,
+ QAbstractItemModel* model,
+ const qreal& width,
+ const qreal& timestampWidth,
+ const qreal& senderWidth,
+ const qreal& contentsWidth,
+ const QPointF& senderPos,
+ const QPointF& contentsPos,
+ QGraphicsItem* parent = nullptr);
+
+ ~ChatLine() override;
+
+ inline QRectF boundingRect() const override { return {0, 0, _width, _height}; }
+
+ inline QModelIndex index() const { return model()->index(row(), 0); }
+ inline MsgId msgId() const { return index().data(MessageModel::MsgIdRole).value<MsgId>(); }
+ inline Message::Type msgType() const { return (Message::Type)index().data(MessageModel::TypeRole).toInt(); }
+
+ inline int row() const { return _row; }
+ inline void setRow(int row) { _row = row; }
+
+ inline const QAbstractItemModel* model() const { return _model; }
+ inline ChatScene* chatScene() const { return qobject_cast<ChatScene*>(scene()); }
+ inline ChatView* chatView() const { return chatScene() ? chatScene()->chatView() : nullptr; }
+
+ inline qreal width() const { return _width; }
+ inline qreal height() const { return _height; }
+
+ ChatItem* item(ChatLineModel::ColumnType);
+ ChatItem* itemAt(const QPointF& pos);
+ inline ChatItem* timestampItem() { return &_timestampItem; }
+ inline ChatItem* senderItem() { return &_senderItem; }
+ inline ContentsChatItem* contentsItem() { return &_contentsItem; }
+
+ void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = nullptr) override;
+ enum
+ {
+ Type = ChatScene::ChatLineType
+ };
+ inline int type() const override { return Type; }
+
+ // pos is relative to the parent ChatLine
+ void setFirstColumn(const qreal& timestampWidth, const qreal& senderWidth, const QPointF& senderPos);
+ // setSecondColumn and setGeometryByWidth both also relocate the chatline.
+ // the _bottom_ position is passed via linePos. linePos is updated to the top of the chatLine.
+ void setSecondColumn(const qreal& senderWidth, const qreal& contentsWidth, const QPointF& contentsPos, qreal& linePos);
+ void setGeometryByWidth(const qreal& width, const qreal& contentsWidth, qreal& linePos);