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canvas.h Example File
graphicsview/portedcanvas/canvas.h

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 #ifndef EXAMPLE_H
 #define EXAMPLE_H

 #include <q3popupmenu.h>
 #include <q3mainwindow.h>
 #include <q3intdict.h>
 #include <QMouseEvent>
 #include <QGraphicsView>
 #include <QGraphicsScene>
 #include <QGraphicsItem>

 class BouncyLogo : public QGraphicsPixmapItem {
     void initSpeed();
 public:
     BouncyLogo();
     void advance(int);
     int type() const;

     QPainterPath shape() const;

     void initPos();
 private:
     qreal xvel;
     qreal yvel;
 };

 class FigureEditor : public QGraphicsView {
     Q_OBJECT

 public:
     FigureEditor(QGraphicsScene&, QWidget* parent=0, const char* name=0, Qt::WindowFlags f=0);
     void clear();

 signals:
     void status(const QString&);
 };

 class Main : public Q3MainWindow {
     Q_OBJECT

 public:
     Main(QGraphicsScene&, QWidget* parent=0, const char* name=0, Qt::WindowFlags f=0);
     ~Main();

 public slots:
     void help();

 private slots:
     void aboutQt();
     void newView();
     void clear();
     void init();

     void addSprite();
     void addCircle();
     void addHexagon();
     void addPolygon();
     void addSpline();
     void addText();
     void addLine();
     void addRectangle();
     void addMesh();
     void addLogo();
     void addButterfly();

     void enlarge();
     void shrink();
     void rotateClockwise();
     void rotateCounterClockwise();
     void zoomIn();
     void zoomOut();
     void mirror();
     void moveL();
     void moveR();
     void moveU();
     void moveD();

     void print();

 private:
     QGraphicsScene& canvas;
     FigureEditor *editor;

     Q3PopupMenu* options;
     QPrinter* printer;
     int dbf_id;
 };

 #endif