Java Swing Tips: ContentPane

2010/06/15

Translucent JFrame

Code

JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame();
// com.sun.awt.AWTUtilities.setWindowOpacity(frame, .5f);
com.sun.awt.AWTUtilities.setWindowOpaque(frame, false); // 6u14
// 1.7.0 frame.setBackground(new Color(0, 0, 0, 0));
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
JPanel p = new JPanel();
p.add(new JButton("JButton"));
p.setBackground(new Color(.5f, .8f, .5f, .5f));
frame.getContentPane().add(p);
frame.setSize(320, 240);
frame.setLocationRelativeTo(null);
frame.setVisible(true);

References

2010/05/10

Custom Decorated TitleBar JFrame

Code

class ResizeWindowListener extends MouseAdapter {
  private Rectangle startSide = null;
  private final JFrame frame;
  public ResizeWindowListener(JFrame frame) {
    this.frame = frame;
  }

  @Override public void mousePressed(MouseEvent e) {
    startSide = frame.getBounds();
  }

  @Override public void mouseDragged(MouseEvent e) {
    if (startSide == null) return;
    Component c = e.getComponent();
    if (c == topleft) {
      startSide.y += e.getY();
      startSide.height -= e.getY();
      startSide.x += e.getX();
      startSide.width -= e.getX();
    } else if (c == top) {
      startSide.y += e.getY();
      startSide.height -= e.getY();
    } else if (c == topright) {
      startSide.y += e.getY();
      startSide.height -= e.getY();
      startSide.width += e.getX();
    } else if (c == left) {
      startSide.x += e.getX();
      startSide.width -= e.getX();
    } else if (c == right) {
      startSide.width += e.getX();
    } else if (c == bottomleft) {
      startSide.height += e.getY();
      startSide.x += e.getX();
      startSide.width -= e.getX();
    } else if (c == bottom) {
      startSide.height += e.getY();
    } else if (c == bottomright) {
      startSide.height += e.getY();
      startSide.width += e.getX();
    }
    frame.setBounds(startSide);
  }
}

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2010/06/15

Translucent JFrame

Code

References

2010/05/10

Custom Decorated TitleBar JFrame

Code

References