Build multiple document interface by yourself
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.util.Hashtable;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
import javax.swing.LookAndFeel;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.MatteBorder;
import javax.swing.event.MouseInputAdapter;
import javax.swing.plaf.BorderUIResource;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.FontUIResource;
public class LayeredPaneDemo extends JFrame {
public LayeredPaneDemo() {
super("");
setSize(570, 400);
getContentPane().setBackground(new Color(244, 232, 152));
getLayeredPane().setOpaque(true);
InnerFrame[] frames = new InnerFrame[5];
for (int i = 0; i < 5; i++) {
frames[i] = new InnerFrame("InnerFrame " + i);
frames[i].setBounds(50 + i * 20, 50 + i * 20, 200, 200);
getLayeredPane().add(frames[i]);
}
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
};
addWindowListener(l);
setVisible(true);
}
public static void main(String[] args) {
new LayeredPaneDemo();
}
}
class InnerFrame extends JPanel {
private static String IMAGE_DIR = "mdi" + java.io.File.separator;
private static ImageIcon PRESS_RESTORE_BUTTON_ICON = new ImageIcon(
IMAGE_DIR + "pressrestore.gif");
private static ImageIcon PRESS_ICONIZE_BUTTON_ICON = new ImageIcon(
IMAGE_DIR + "pressiconize.gif");
private static final int WIDTH = 200;
private static final int HEIGHT = 200;
private static final int TITLE_BAR_HEIGHT = 25;
private static Color TITLE_BAR_BG_COLOR = new Color(108, 190, 116);
private String title;
private JLabel titleLabel;
private boolean isIconified;
private JPanel titlePanel;
private JPanel contentPanel;
private JPanel buttonPanel;
private JPanel buttonWrapperPanel;
private InnerFrameButton iconizeButton;
private InnerFrameButton closeButton;
public InnerFrame(String t) {
title = t;
setLayout(new BorderLayout());
createTitleBar();
contentPanel = new JPanel();
add(titlePanel, BorderLayout.NORTH);
add(contentPanel, BorderLayout.CENTER);
}
public void toFront() {
if (getParent() instanceof JLayeredPane)
((JLayeredPane) getParent()).moveToFront(this);
}
public void close() {
if (getParent() instanceof JLayeredPane) {
JLayeredPane jlp = (JLayeredPane) getParent();
jlp.remove(InnerFrame.this);
jlp.repaint();
}
}
public void setIconified(boolean b) {
isIconified = b;
if (b) {
setBounds(getX(), getY(), WIDTH, TITLE_BAR_HEIGHT);
} else {
setBounds(getX(), getY(), WIDTH, HEIGHT);
revalidate();
}
}
public boolean isIconified() {
return isIconified;
}
// Title Bar
public void createTitleBar() {
titlePanel = new JPanel() {
public Dimension getPreferredSize() {
return new Dimension(InnerFrame.WIDTH,
InnerFrame.TITLE_BAR_HEIGHT);
}
};
titlePanel.setLayout(new BorderLayout());
titlePanel.setOpaque(true);
titlePanel.setBackground(TITLE_BAR_BG_COLOR);
titleLabel = new JLabel(title);
titleLabel.setForeground(Color.black);
buttonWrapperPanel = new JPanel();
buttonWrapperPanel.setOpaque(false);
buttonPanel = new JPanel(new GridLayout(1, 2));
buttonPanel.setOpaque(false);
buttonPanel.setAlignmentX(0.5f);
buttonPanel.setAlignmentY(0.5f);
buttonWrapperPanel.add(buttonPanel);
titlePanel.add(titleLabel, BorderLayout.CENTER);
titlePanel.add(buttonWrapperPanel, BorderLayout.EAST);
InnerFrameTitleBarMouseAdapter iftbma = new InnerFrameTitleBarMouseAdapter(
this);
titlePanel.addMouseListener(iftbma);
titlePanel.addMouseMotionListener(iftbma);
}
// title bar mouse adapter for frame dragging
class InnerFrameTitleBarMouseAdapter extends MouseInputAdapter {
InnerFrame innerFrame;
int xDifference, yDifference;
boolean isDragging;
public InnerFrameTitleBarMouseAdapter(InnerFrame inf) {
innerFrame = inf;
}
public void mouseDragged(MouseEvent e) {
if (isDragging)
innerFrame.setLocation(e.getX() - xDifference + getX(), e.getY()
- yDifference + getY());
}
public void mousePressed(MouseEvent e) {
innerFrame.toFront();
xDifference = e.getX();
yDifference = e.getY();
isDragging = true;
}
public void mouseReleased(MouseEvent e) {
isDragging = false;
}
}
// custom button class for title bar
class InnerFrameButton extends JButton {
Dimension size;
public InnerFrameButton(ImageIcon ii) {
super(ii);
size = new Dimension(ii.getIconWidth(), ii.getIconHeight());
setOpaque(false);
setContentAreaFilled(false);
setBorder(null);
}
public Dimension getPreferredSize() {
return size;
}
public Dimension getMinimumSize() {
return size;
}
public Dimension getMaximumSize() {
return size;
}
}
}
class InnerFrameUI extends javax.swing.plaf.PanelUI {
private static InnerFrameUI frameUI;
protected static Color DEFAULT_TITLE_BAR_BG_COLOR;
protected static Color DEFAULT_SELECTED_TITLE_BAR_BG_COLOR;
protected static Color DEFAULT_TITLE_BAR_FG_COLOR;
protected static Color DEFAULT_SELECTED_TITLE_BAR_FG_COLOR;
protected static Font DEFAULT_TITLE_BAR_FONT;
protected static Border DEFAULT_INNER_FRAME_BORDER;
protected static Icon DEFAULT_FRAME_ICON;
private static Hashtable myDefaults = new Hashtable();
static {
myDefaults.put("InternalFrame.inactiveTitleBackground",
new ColorUIResource(108, 190, 116));
myDefaults.put("InternalFrame.inactiveTitleForeground",
new ColorUIResource(Color.black));
myDefaults.put("InternalFrame.activeTitleBackground",
new ColorUIResource(91, 182, 249));
myDefaults.put("InternalFrame.activeTitleForeground",
new ColorUIResource(Color.black));
myDefaults.put("InternalFrame.titleFont", new FontUIResource(
"Dialog", Font.BOLD, 12));
myDefaults.put("InternalFrame.border", new BorderUIResource(
new MatteBorder(4, 4, 4, 4, Color.blue)));
}
public static ComponentUI createUI(JComponent c) {
LookAndFeel currentLF = UIManager.getLookAndFeel();
if (frameUI == null)
frameUI = new InnerFrameUI();
try {
frameUI.installDefaults();
InnerFrame frame = (InnerFrame) c;
frame.setBorder(DEFAULT_INNER_FRAME_BORDER);
if (frame.isShowing())
frame.repaint();
} catch (Exception ex) {
System.err.println(ex);
ex.printStackTrace();
}
return frameUI;
}
public void installUI(JComponent c) {
InnerFrame frame = (InnerFrame) c;
super.installUI(frame);
}
public void uninstallUI(JComponent c) {
super.uninstallUI(c);
}
protected void installDefaults() {
DEFAULT_TITLE_BAR_BG_COLOR = (Color) findDefaultResource("InternalFrame.inactiveTitleBackground");
DEFAULT_TITLE_BAR_FG_COLOR = (Color) findDefaultResource("InternalFrame.inactiveTitleForeground");
DEFAULT_SELECTED_TITLE_BAR_BG_COLOR = (Color) findDefaultResource("InternalFrame.activeTitleBackground");
DEFAULT_SELECTED_TITLE_BAR_FG_COLOR = (Color) findDefaultResource("InternalFrame.activeTitleForeground");
DEFAULT_TITLE_BAR_FONT = (Font) findDefaultResource("InternalFrame.titleFont");
DEFAULT_INNER_FRAME_BORDER = (Border) findDefaultResource("InternalFrame.border");
DEFAULT_FRAME_ICON = (Icon) findDefaultResource("InternalFrame.icon");
}
protected Object findDefaultResource(String id) {
Object obj = null;
try {
UIDefaults uiDef = UIManager.getDefaults();
obj = uiDef.get(id);
} catch (Exception ex) {
System.err.println(ex);
}
if (obj == null)
obj = myDefaults.get(id);
return obj;
}
public void paint(Graphics g, JComponent c) {
super.paint(g, c);
if (c.getBorder() != null)
c.getBorder().paintBorder(c, g, 0, 0, c.getWidth(), c.getHeight());
}
public Color getTitleBarBkColor() {
return DEFAULT_TITLE_BAR_BG_COLOR;
}
public Color getSelectedTitleBarBkColor() {
return DEFAULT_SELECTED_TITLE_BAR_BG_COLOR;
}
public Color getTitleBarFgColor() {
return DEFAULT_TITLE_BAR_FG_COLOR;
}
public Color getSelectedTitleBarFgColor() {
return DEFAULT_SELECTED_TITLE_BAR_FG_COLOR;
}
public Font getTitleBarFont() {
return DEFAULT_TITLE_BAR_FONT;
}
public Border getInnerFrameBorder() {
return DEFAULT_INNER_FRAME_BORDER;
}
}
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