1 files changed, 45 insertions, 0 deletions
diff --git a/tutorial/t8/cannon.cpp b/tutorial/t8/cannon.cpp
new file mode 100644
index 0000000..fd9d203
--- /dev/null
+++ b/tutorial/t8/cannon.cpp
@@ -0,0 +1,45 @@
+/****************************************************************
+**
+** 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 );
+}
+