You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
910 B
46 lines
910 B
14 years ago
|
/****************************************************************
|
||
|
|
**
|
||
|
|
** 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 );
|
||
|
|
}
|
||
|
|
|