qt3/examples/scribble/scribble.h

/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#ifndef SCRIBBLE_H
#define SCRIBBLE_H

#include <qmainwindow.h>
#include <qpen.h>
#include <qpoint.h>
#include <qpixmap.h>
#include <qwidget.h>
#include <qstring.h>
#include <qpointarray.h>

class QMouseEvent;
class QResizeEvent;
class QPaintEvent;
class QToolButton;
class QSpinBox;

class Canvas : public QWidget
{
    Q_OBJECT

public:
    Canvas( QWidget *parent = 0, const char *name = 0 );

    void setPenColor( const QColor &c )
    { pen.setColor( c ); }

    void setPenWidth( int w )
    { pen.setWidth( w ); }

    QColor penColor()
    { return pen.color(); }

    int penWidth()
    { return pen.width(); }

    void save( const QString &filename, const QString &format );

    void clearScreen();

protected:
    void mousePressEvent( QMouseEvent *e );
    void mouseReleaseEvent( QMouseEvent *e );
    void mouseMoveEvent( QMouseEvent *e );
    void resizeEvent( QResizeEvent *e );
    void paintEvent( QPaintEvent *e );

    QPen pen;
    QPointArray polyline;

    bool mousePressed;

    QPixmap buffer;

};

class Scribble : public QMainWindow
{
    Q_OBJECT

public:
    Scribble( QWidget *parent = 0, const char *name = 0 );

protected:
    Canvas* canvas;

    QSpinBox *bPWidth;
    QToolButton *bPColor, *bSave, *bClear;

protected slots:
    void slotSave();
    void slotColor();
    void slotWidth( int );
    void slotClear();

};

#endif