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73 lines
1.8 KiB
73 lines
1.8 KiB
#ifndef GRAPHWIDGET_H
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#define GRAPHWIDGET_H
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#include <QGraphicsView>
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#include <QGraphicsScene>
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#include <QKeyEvent>
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#include <QGraphicsSceneMouseEvent>
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#include "node.h"
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class MainWindow;
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class GraphWidget : public QGraphicsView
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{
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Q_OBJECT
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public:
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GraphWidget(MainWindow *parent = 0);
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void setActiveNode(Node *node);
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void insertNode();
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void setActiveNodeEditable();
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void nodeSelected(Node *node);
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void nodeMoved(QGraphicsSceneMouseEvent *event);
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QList<Edge *> edges() const;
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void contentChanged(const bool &changed = true);
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void newScene();
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void closeScene();
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void readContentFromXmlFile(const QString &fileName);
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void writeContentToXmlFile(const QString &fileName);
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void writeContentToPngFile(const QString &fileName);
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protected:
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void keyPressEvent(QKeyEvent *event);
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void wheelEvent(QWheelEvent *event);
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void drawBackground(QPainter *painter, const QRectF &rect);
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private:
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void scaleView(qreal scaleFactor);
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void showNodeNumbers();
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void showingAllNodeNumbers(const bool &show = true);
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void showingNodeNumbersBeginWithNumber(const int &number,
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const bool &show = true);
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bool numberStartsWithNumber(const int &number, const int &prefix);
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qreal calculateBiggestAngle(Node *node);
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void addEdge(Node *source, Node *destination);
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void removeEdge(Node* source, Node *destination);
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void removeAllNodes();
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void addFirstNode();
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QList<Node *> m_nodeList;
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MainWindow *m_parent;
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Node *m_activeNode;
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QGraphicsScene *m_scene;
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bool m_showingNodeNumbers;
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QString m_hintNumber;
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Node *m_hintNode;
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bool m_editingNode;
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bool m_edgeAdding;
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bool m_edgeDeleting;
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bool m_contentChanged;
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QString m_fileName;
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static const QColor m_paper;
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static const QColor m_gold;
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};
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#endif // GRAPHWIDGET_H
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