home *** CD-ROM | disk | FTP | other *** search
- /****************************************************************
- **
- ** Implementation CannonField class, Qt tutorial 8
- **
- ****************************************************************/
-
- #include "cannon.h"
- #include <qpainter.h>
-
-
- CannonField::CannonField( QWidget *parent, const char *name )
- : QWidget( parent, name )
- {
- ang = 45;
- setPalette( QPalette( QColor( 250, 250, 200) ) );
- }
-
-
- void CannonField::setAngle( int degrees )
- {
- if ( degrees < 5 )
- degrees = 5;
- if ( degrees > 70 )
- degrees = 70;
- if ( ang == degrees )
- return;
- ang = degrees;
- repaint();
- emit angleChanged( ang );
- }
-
-
- void CannonField::paintEvent( QPaintEvent * )
- {
- QString s = "Angle = " + QString::number( ang );
- QPainter p( this );
- p.drawText( 200, 200, s );
- }
-
-
- QSizePolicy CannonField::sizePolicy() const
- {
- return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
- }
-
-