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graphwidget.h Example File
graphicsview/elasticnodes/graphwidget.h

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    ** This file is part of the example classes of the Qt Toolkit.
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    ** accordance with the Qt Preview License Agreement provided with the
    ** Software.
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    #ifndef GRAPHWIDGET_H
    #define GRAPHWIDGET_H

    #include <QtGui/QGraphicsView>

    class Node;

    class GraphWidget : public QGraphicsView
    {
        Q_OBJECT

    public:
        GraphWidget();

        void itemMoved();

    protected:
        void keyPressEvent(QKeyEvent *event);
        void timerEvent(QTimerEvent *event);
        void wheelEvent(QWheelEvent *event);
        void drawBackground(QPainter *painter, const QRectF &rect);

        void scaleView(qreal scaleFactor);

    private:
        int timerId;
        Node *centerNode;
    };

    #endif


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Qt 4.2.0-tp1