/*
* @(#)RadiusHandle.java 5.1
*
*/
package CH.ifa.draw.figures;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import CH.ifa.draw.framework.DrawingView;
import CH.ifa.draw.standard.AbstractHandle;
import CH.ifa.draw.util.Geom;
/**
* A Handle to manipulate the radius of a round corner rectangle.
*/
class RadiusHandle extends AbstractHandle {
private Point fRadius;
private RoundRectangleFigure fOwner;
private static final int OFFSET = 4;
public RadiusHandle(RoundRectangleFigure owner) {
super(owner);
fOwner = owner;
}
public void invokeStart(int x, int y, DrawingView view) {
fRadius = fOwner.getArc();
fRadius.x = fRadius.x/2;
fRadius.y = fRadius.y/2;
}
public void invokeStep (int x, int y, int anchorX, int anchorY, DrawingView view) {
int dx = x-anchorX;
int dy = y-anchorY;
Rectangle r = fOwner.displayBox();
int rx = Geom.range(0, r.width, 2*(fRadius.x + dx));
int ry = Geom.range(0, r.height, 2*(fRadius.y + dy));
fOwner.setArc(rx, ry);
}
public Point locate() {
Point radius = fOwner.getArc();
Rectangle r = fOwner.displayBox();
return new Point(r.x+radius.x/2+OFFSET, r.y+radius.y/2+OFFSET);
}
public void draw(Graphics g) {
Rectangle r = displayBox();
g.setColor(Color.yellow);
g.fillOval(r.x, r.y, r.width, r.height);
g.setColor(Color.black);
g.drawOval(r.x, r.y, r.width, r.height);
}
}