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97 lines
2.8 KiB
97 lines
2.8 KiB
#ifndef NODE_H
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#define NODE_H
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#include <QGraphicsTextItem>
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#include <QTextCursor>
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#include <QGraphicsDropShadowEffect>
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#include "edge.h"
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#include "graphwidget.h"
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class GraphWidget;
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class Node : public QGraphicsTextItem
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{
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public:
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Node(GraphWidget *graphWidget = 0);
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~Node();
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// add/remove edges
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void addEdge(Edge *edge, bool startsFromThisNode);
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void deleteEdge(Node *otherEnd);
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void removeEdgeFromList(Edge *edge);
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// graph traversal
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QList<Edge *> edgesFrom(const bool &excludeSecondaries = true) const;
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QList<Edge *> edgesToThis(const bool &excludeSecondaries = true) const;
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Edge * edgeTo(const Node* node) const;
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QList<Node *> subtree() const;
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bool isConnected(const Node *node) const;
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// prop set/get
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void setBorder(const bool &hasBorder = true);
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void setEditable(const bool &editable = true);
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void setColor(const QColor &color);
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QColor color() const { return m_color; }
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void setTextColor(const QColor &color);
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QColor textColor() const { return m_textColor; }
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void setScale(const qreal &factor, const QRectF &sceneRect);
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// show numbers in hint mode
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void showNumber(const int &number, const bool& show = true,
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const bool &numberIsSpecial = false);
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// insert picture to the cursor's current position
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void insertPicture(const QString &picture);
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// changing visibility from prot to pub
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// so GraphWidget::keyPressEvent can call it edit during editing
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void keyPressEvent(QKeyEvent *event);
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// calculetes the intersection of line and shape of this Node
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QPointF intersection(const QLineF &line, const bool &reverse = false) const;
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// returns with the biggest angle between the edges
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double calculateBiggestAngle() const;
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protected:
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
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QWidget *widget);
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QVariant itemChange(GraphicsItemChange change, const QVariant &value);
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void mousePressEvent(QGraphicsSceneMouseEvent *event);
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void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
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void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
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QPainterPath shape () const;
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void focusOutEvent(QFocusEvent *event);
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private:
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double doubleModulo(const double &devided, const double &devisor) const;
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struct EdgeElement
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{
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Edge *edge;
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bool startsFromThisNode;
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EdgeElement(Edge *e, bool s) : edge(e), startsFromThisNode(s) {}
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};
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QList<EdgeElement> m_edgeList;
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GraphWidget *m_graph;
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int m_number;
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bool m_hasBorder;
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bool m_numberIsSpecial;
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QColor m_color;
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QColor m_textColor;
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QGraphicsDropShadowEffect *m_effect;
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static const double m_pi;
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static const double m_oneAndHalfPi;
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static const double m_twoPi;
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static const QColor m_gold;
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};
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#endif // NODE_H
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