Customizing the Preview Panel of a JColorChooser Dialog
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JColorChooser;
import javax.swing.JComponent;
import javax.swing.colorchooser.ColorSelectionModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class Main {
public static void main(String[] argv) {
JColorChooser chooser = new JColorChooser();
final MyPreviewPanel pre = new MyPreviewPanel(chooser);
chooser.setPreviewPanel(pre);
ColorSelectionModel model = chooser.getSelectionModel();
model.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent evt) {
ColorSelectionModel model = (ColorSelectionModel) evt.getSource();
pre.curColor = model.getSelectedColor();
}
});
}
}
class MyPreviewPanel extends JComponent {
Color curColor;
public MyPreviewPanel(JColorChooser chooser) {
curColor = chooser.getColor();
setPreferredSize(new Dimension(50, 50));
}
public void paint(Graphics g) {
g.setColor(curColor);
g.fillRect(0, 0, getWidth() - 1, getHeight() - 1);
}
}
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