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/****************************************************************
**
** Implementation CannonField class, Qt tutorial 9
**
****************************************************************/
#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 * )
{
QPainter p( this );
p.setBrush( blue );
p.setPen( NoPen );
p.translate( 0, rect().bottom() );
p.drawPie( QRect(-35, -35, 70, 70), 0, 90*16 );
p.rotate( -ang );
p.drawRect( QRect(33, -4, 15, 8) );
}
QSizePolicy CannonField::sizePolicy() const
{
return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
}
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