Code
class ToggleButtonBarCellIcon implements Icon{
private static final Color TL = new Color(1f,1f,1f,.2f);
private static final Color BR = new Color(0f,0f,0f,.2f);
private static final Color ST = new Color(1f,1f,1f,.4f);
private static final Color SB = new Color(1f,1f,1f,.1f);
private Color ssc;
private Color bgc;
@Override public void paintIcon(Component c, Graphics g, int x, int y) {
int r = 8;
int w = c.getWidth();
int h = c.getHeight();
Container parent = c.getParent();
if(parent==null) {
return;
}
Graphics2D g2 = (Graphics2D)g.create();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Path2D.Float p = new Path2D.Float();
if(c==parent.getComponent(0)) {
//:first-child
p.moveTo(x, y + r);
p.quadTo(x, y, x + r, y);
p.lineTo(x + w, y);
p.lineTo(x + w, y + h);
p.lineTo(x + r, y + h);
p.quadTo(x, y + h, x, y + h - r);
}else if(c==parent.getComponent(parent.getComponentCount()-1)) {
//:last-child
p.moveTo(x, y);
p.lineTo(x + w - r, y);
p.quadTo(x + w, y, x + w, y + r);
p.lineTo(x + w, y + h - r);
p.quadTo(x + w, y + h, x + w -r, y + h);
p.lineTo(x, y + h);
}else{
p.moveTo(x, y);
p.lineTo(x + w, y);
p.lineTo(x + w, y + h);
p.lineTo(x, y + h);
}
p.closePath();
Area area = new Area(p);
g2.setPaint(c.getBackground());
g2.fill(area);
ssc = TL;
bgc = BR;
if(c instanceof AbstractButton) {
ButtonModel m = ((AbstractButton)c).getModel();
if(m.isSelected() || m.isRollover()) {
ssc = ST;
bgc = SB;
}
}
g2.setPaint(new GradientPaint(x, y, ssc, x, y+h, bgc, true));
g2.fill(area);
g2.setPaint(BR);
g2.draw(area);
g2.dispose();
}
@Override public int getIconWidth() {
return 80;
}
@Override public int getIconHeight() {
return 20;
}
}
References
