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<pre>/****************************************************************
**
** Implementation CannonField class, Qt tutorial 8
**
****************************************************************/

#include "cannon.h"
#include &lt;<a href="qpainter-h.html">qpainter.h</a>&gt;


<a name="f34"></a>CannonField::CannonField( <a href="qwidget.html">QWidget</a> *parent, const char *name )
        : <a href="qwidget.html">QWidget</a>( parent, name )
{
    ang = 45;
    <a href="qwidget.html#setPalette">setPalette</a>( QPalette( QColor( 250, 250, 200) ) );
}


void <a name="f35"></a>CannonField::setAngle( int degrees )
{
    if ( degrees &lt; 5 )
        degrees = 5;
    if ( degrees &gt; 70 )
        degrees = 70;
    if ( ang == degrees )
        return;
    ang = degrees;
    <a href="qwidget.html#repaint">repaint</a>();
    emit angleChanged( ang );
}


void CannonField::<a href="qwidget.html#paintEvent">paintEvent</a>( <a href="qpaintevent.html">QPaintEvent</a> * )
{
    <a href="qstring.html">QString</a> s = "Angle = " + QString::number( ang );
    <a href="qpainter.html">QPainter</a> p( this );
    p.<a href="qpainter.html#drawText">drawText</a>( 200, 200, s );
}


QSizePolicy CannonField::<a href="qwidget.html#sizePolicy">sizePolicy</a>() const
{
    return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
}

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