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 #include <QPainter>
 
 #include "cannonfield.h"
 
 CannonField::CannonField(QWidget *parent)
     : QWidget(parent)
 {
     currentAngle = 45;
     setPalette(QPalette(QColor(250, 250, 200)));
     setAutoFillBackground(true);
 }
 
 void CannonField::setAngle(int angle)
 {
     if (angle < 5)
         angle = 5;
     if (angle > 70)
         angle = 70;
     if (currentAngle == angle)
         return;
     currentAngle = angle;
     update();
     emit angleChanged(currentAngle);
 }
 
 void CannonField::paintEvent(QPaintEvent * /* event */)
 {
     QPainter painter(this);
     painter.drawText(200, 200,
                      tr("Angle = ") + QString::number(currentAngle));
 }