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MainPanel.java
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/
MainPanel.java
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// -*- mode:java; encoding:utf-8 -*-
// vim:set fileencoding=utf-8:
// @homepage@
package example;
import java.awt.*;
import javax.swing.*;
public final class MainPanel extends JPanel {
private MainPanel() {
super(new BorderLayout());
Box vb = Box.createVerticalBox();
Color c1 = new Color(0xFF0000);
vb.add(mkLbl("new Color(0xFF0000)", c1));
Color c2 = new Color(0x88_88_88);
vb.add(mkLbl("new Color(0x88_88_88)", c2));
Color c3 = new Color(Integer.parseInt("00FF00", 16));
vb.add(mkLbl("new Color(Integer.parseInt('00FF00', 16))", c3));
Color c4 = new Color(Integer.decode("#0000FF"));
vb.add(mkLbl("new Color(Integer.decode('#0000FF'))", c4));
Color c5 = Color.decode("#00FFFF");
vb.add(mkLbl("Color.decode('#00FFFF')", c5));
String html = "<html><span style='color: #FF00FF'>#FF00FF";
JLabel label = new JLabel(html);
label.setBorder(BorderFactory.createTitledBorder("new JLabel(" + html + ")"));
vb.add(label);
vb.add(Box.createVerticalGlue());
add(new JScrollPane(vb));
setPreferredSize(new Dimension(320, 240));
}
private static JLabel mkLbl(String title, Color c) {
JLabel label = new JLabel(String.format("#%06x", c.getRGB() & 0xFF_FF_FF)) {
@Override public Dimension getMaximumSize() {
Dimension d = super.getPreferredSize();
d.width = Short.MAX_VALUE;
return d;
}
};
label.setBorder(BorderFactory.createTitledBorder(title));
label.setForeground(c);
return label;
}
public static void main(String[] args) {
EventQueue.invokeLater(MainPanel::createAndShowGui);
}
private static void createAndShowGui() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (UnsupportedLookAndFeelException ignored) {
Toolkit.getDefaultToolkit().beep();
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException ex) {
ex.printStackTrace();
return;
}
JFrame frame = new JFrame("@title@");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.getContentPane().add(new MainPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}