1 files changed, 72 insertions, 0 deletions
diff --git a/qtjava/javalib/tutorial/t10/CannonField.java b/qtjava/javalib/tutorial/t10/CannonField.java
new file mode 100644
index 00000000..3f6e2727
--- /dev/null
+++ b/qtjava/javalib/tutorial/t10/CannonField.java
@@ -0,0 +1,72 @@
+import org.kde.qt.*;
+
+public class CannonField extends QWidget {
+	private int ang;
+	private int f;
+	
+	public CannonField(QWidget parent, String name) {
+		super(parent, name);
+		ang = 45;
+		setPalette(new QPalette(new QColor(250, 250, 200)));
+	}
+
+	public int angle() {
+		return ang;
+	}
+
+	public void setAngle(int degrees) {
+		if (degrees < 5)
+			degrees = 5;
+		if (degrees > 70)
+			degrees = 70;
+		if (ang == degrees)
+			return;
+		ang = degrees;
+		repaint();
+		emit("angleChanged", ang);
+	}
+
+	public int force() {
+		return f;
+	}
+
+	public void setForce(int newton) {
+		if (newton < 0)
+			newton = 0;
+		if (f == newton)
+			return;
+		f = newton;
+		emit("forceChanged", f);
+	}
+
+	private QRect cannonRect() {
+		QRect r = new QRect(0, 0, 50, 50);
+		r.moveBottomLeft(rect().bottomLeft());
+		return r;
+	}
+
+	public void paintEvent(QPaintEvent e) {
+		if (!e.rect().intersects(cannonRect()))
+			return;
+
+		QRect cr = cannonRect();
+		QPixmap pix = new QPixmap(cr.size());
+		pix.fill(new QColor(250, 250, 200));
+
+		QPainter p = new QPainter(pix);
+		p.setBrush(blue());
+		p.setPen(NoPen);
+		p.translate(0, pix.height() - 1);
+		p.drawPie(new QRect(-35,-35, 70, 70), 0, 90*16);
+		p.rotate(-ang);
+		p.drawRect(new QRect(33, -4, 15, 8));
+		p.end();
+
+		p.begin(this);
+		p.drawPixmap(cr.topLeft(), pix);
+	}
+
+	public QSizePolicy sizePolicy() {
+		return new QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding);
+	}
+}