/** Test if a mouse event is inside the "Pin" that allows to change the percentage */
private boolean inPin(MouseEvent ev) {
int mouseX = ev.getX();
int mouseY = ev.getY();
int centerX = this.getWidth() / 2;
int centerY = this.getHeight() / 2;
int radius = Math.min(getWidth() - 4, getHeight() - 4) / 2;
double angle = myController.getValue() * 2 * Math.PI;
int pinX = centerX + (int) (Math.cos(angle) * radius);
int pinY = centerY - (int) (Math.sin(angle) * radius);
Rectangle r = new Rectangle();
r.setBounds(pinX - 4, pinY - 4, 8, 8);
return r.contains(mouseX, mouseY);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
int centerX = this.getWidth() / 2;
int centerY = this.getHeight() / 2;
int radius = Math.min(getWidth() - 4, getHeight() - 4) / 2;
double angle = myController.getValue() * 2 * Math.PI;
g.fillOval(centerX - radius, centerY - radius, radius * 2, radius * 2);
g.setColor(Color.yellow);
g.fillArc(
centerX - radius, centerY - radius, radius * 2, radius * 2, 0, (int) Math.toDegrees(angle));
int pinX = centerX + (int) (Math.cos(angle) * radius);
int pinY = centerY - (int) (Math.sin(angle) * radius);
g.setColor(Color.gray.brighter());
g.fill3DRect(pinX - 4, pinY - 4, 8, 8, true);
}
