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< pre > /****************************************************************
**
** Implementation CannonField class, TQt tutorial 8
**
****************************************************************/
#include "cannon.h"
#include < < a href = "qpainter-h.html" > ntqpainter.h< / a > >
< a name = "f34" > < / a > CannonField::CannonField( < a href = "tqwidget.html" > TQWidget< / a > *parent, const char *name )
: < a href = "tqwidget.html" > TQWidget< / a > ( parent, name )
{
ang = 45;
< a href = "tqwidget.html#setPalette" > setPalette< / a > ( TQPalette( TQColor( 250, 250, 200) ) );
}
void < a name = "f35" > < / a > CannonField::setAngle( int degrees )
{
if ( degrees < 5 )
degrees = 5;
if ( degrees > 70 )
degrees = 70;
if ( ang == degrees )
return;
ang = degrees;
< a href = "tqwidget.html#repaint" > repaint< / a > ();
emit angleChanged( ang );
}
void CannonField::< a href = "tqwidget.html#paintEvent" > paintEvent< / a > ( < a href = "qpaintevent.html" > TQPaintEvent< / a > * )
{
< a href = "tqstring.html" > TQString< / a > s = "Angle = " + TQString::number( ang );
< a href = "ntqpainter.html" > TQPainter< / a > p( this );
p.< a href = "ntqpainter.html#drawText" > drawText< / a > ( 200, 200, s );
}
TQSizePolicy CannonField::< a href = "tqwidget.html#sizePolicy" > sizePolicy< / a > () const
{
return TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Expanding );
}
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