32 lines
866 B
C
32 lines
866 B
C
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#pragma once
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#include <QGraphicsObject>
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#include <QSet>
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class ArrowItem;
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// Small movable node that lets several arrows meet at a single point.
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class JunctionItem final : public QGraphicsObject {
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Q_OBJECT
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public:
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enum { Type = UserType + 2 };
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explicit JunctionItem(QGraphicsItem* parent = nullptr, int id = -1);
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QRectF boundingRect() const override;
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void paint(QPainter* p, const QStyleOptionGraphicsItem* opt, QWidget* widget) override;
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int type() const override { return Type; }
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void addArrow(ArrowItem* a);
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void removeArrow(ArrowItem* a);
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bool hitTest(const QPointF& scenePos, qreal radius) const;
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int id() const { return m_id; }
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void setId(int id) { m_id = id; }
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protected:
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QVariant itemChange(GraphicsItemChange change, const QVariant& value) override;
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private:
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qreal m_radius = 5.0;
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int m_id;
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QSet<ArrowItem*> m_arrows;
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};
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