GlassPane on label
Hello!
I'm trying to create a GUI interface. I use NetBeans, often in the Design view.
I have a jFrame. Inside of it I have a jLabel lbl1 and a jPanel.
I wish to add a jGlassPane on lbl1, in order to draw other labels on it.
I don't have the slightest idea about the way to realise that.
I also read lots of tutorials about glassPane but I can't make head or tail of them. They're too complex for my purpouse, and I can't find a way to use them.
Can someone please help me?
Thank you!
Message was edited by:
YngwieM
[582 byte] By [
YngwieMa] at [2007-11-27 6:13:20]
# 2
import java.awt.*;
import javax.swing.*;
public class LabelOverlay {
private JPanel getContent() {
JLabel label = new JLabel("hello world", JLabel.CENTER);
//label.setBorder(BorderFactory.createEtchedBorder());
JPanel labelPanel = new JPanel(new BorderLayout());
labelPanel.add(label);
OverlayComponent component = new OverlayComponent();
JPanel panel = new JPanel();
OverlayLayout overlay = new OverlayLayout(panel);
panel.setLayout(overlay);
panel.add(component);
panel.add(labelPanel);
return panel;
}
public static void main(String[] args) {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(new LabelOverlay().getContent());
f.setSize(400,400);
f.setLocation(200,200);
f.setVisible(true);
}
}
class OverlayComponent extends JComponent {
protected void paintComponent(Graphics g) {
// This is non-opaque so there is no need
// to call super or clear the background.
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
int w = getWidth();
int h = getHeight();
int R = Math.min(w,h)/8;
int[][] xy = generateShapeArrays(w/2, h/2, R, 3);
Polygon triangle = new Polygon(xy[0], xy[1], 3);
g2.setPaint(Color.red);
g2.draw(triangle);
}
private int[][] generateShapeArrays(int cx, int cy, int R, int sides) {
int radInc = 0;
if(sides % 2 == 0)
radInc = 1;
int[] x = new int[sides];
int[] y = new int[sides];
for(int i = 0; i < sides; i++) {
x[i] = cx + (int)(R * Math.sin(radInc*Math.PI/sides));
y[i] = cy - (int)(R * Math.cos(radInc*Math.PI/sides));
radInc += 2;
}
// keep base of triangle level
if(sides == 3)
y[2] = y[1];
return new int[][] { x, y };
}
}
# 3
Using crwood's example you can add the OverlayComponent directly to the label without worrying about a parent panel:
//f.getContentPane().add(new LabelOverlay2().getContent());
JLabel label = new JLabel("hello world", JLabel.CENTER);
label.setLayout( new BorderLayout() );
label.add( new OverlayComponent());
f.getContentPane().add(label);
