canvas.h

QT下一个使用Qcanvas绘制点

#ifndef EXAMPLE_H
#define EXAMPLE_H

#include <qpopupmenu.h>
#include <qmainwindow.h>
#include <qintdict.h>
#include <qcanvas.h>

class BouncyLogo : public QCanvasSprite {
    void initPos();
    void initSpeed();
public:
    BouncyLogo(QCanvas*);
    void advance(int);
    int rtti() const;
};


class FigureEditor : public QCanvasView {
    Q_OBJECT

public:
    FigureEditor(QCanvas&, QWidget* parent=0, const char* name=0, WFlags f=0);
    void clear();

protected:
    void contentsMousePressEvent(QMouseEvent*);
    void contentsMouseMoveEvent(QMouseEvent*);

signals:
    void status(const QString&);

private:
    QCanvasItem* moving;
    QPoint moving_start;
};

class Main : public QMainWindow {
    Q_OBJECT

public:
    Main(QCanvas&, QWidget* parent=0, const char* name=0, WFlags f=0);

public slots:
    void help();

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

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

    void toggleDoubleBuffer();

private:
    QCanvas& canvas;
    FigureEditor *editor;

    QPopupMenu* options;
    int dbf_id;
};

#endif