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< pre > /****************************************************************
**
** Implementation CannonField class, TQt tutorial 9
**
****************************************************************/
#include "cannon.h"
#include < < a href = "tqpainter-h.html" > tqpainter.h< / a > >
< a name = "f41" > < / 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 = "f42" > < / 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 = "tqpaintevent.html" > TQPaintEvent< / a > * )
{
< a href = "tqpainter.html" > TQPainter< / a > p( this );
p.< a href = "tqpainter.html#setBrush" > setBrush< / a > ( blue );
p.< a href = "tqpainter.html#setPen" > setPen< / a > ( NoPen );
p.< a href = "tqpainter.html#translate" > translate< / a > ( 0, rect().bottom() );
p.< a href = "tqpainter.html#drawPie" > drawPie< / a > ( TQRect(-35, -35, 70, 70), 0, 90*16 );
p.< a href = "tqpainter.html#rotate" > rotate< / a > ( -ang );
p.< a href = "tqpainter.html#drawRect" > drawRect< / a > ( TQRect(33, -4, 15, 8) );
}
TQSizePolicy CannonField::< a href = "tqwidget.html#sizePolicy" > sizePolicy< / a > () const
{
return TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Expanding );
}
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