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tips4javatips4java
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‎source/OverlapLayoutDemo.java‎

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import java.awt.*;
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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import javax.swing.border.*;
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public class OverlapLayoutDemo
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{
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public static void main(String[] args)
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{
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SwingUtilities.invokeLater(new Runnable() {
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public void run() {
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createAndShowGUI();
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}
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});
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}
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public static void createAndShowGUI()
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{
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JFrame frame = new JFrame("Overlap Layout");
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.add( new DemoPanel() );
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frame.setSize(600, 340);
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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}
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static class DemoPanel extends JPanel
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implements ActionListener, MouseListener
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{
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private JScrollPane scrollPane;
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private JRadioButton above;
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private JRadioButton below;
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private JSpinner xOffset;
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private JSpinner yOffset;
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private JSpinner top;
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private JSpinner bottom;
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private JSpinner left;
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private JSpinner right;
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private JCheckBox includeInvisible;
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private ImageIcon duke;
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private OverlapLayout layout;
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public DemoPanel()
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{
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String path = "dukeWaveRed.gif";
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java.net.URL imgURL = getClass().getResource(path);
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duke = new ImageIcon(imgURL, path);
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setLayout( new BorderLayout() );
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scrollPane = new JScrollPane();
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add(scrollPane);
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add(createControlPanel(), BorderLayout.EAST);
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JButton button = new JButton("Recreate Layout With Cards");
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button.addActionListener( this );
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add(button, BorderLayout.SOUTH);
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createLayout();
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}
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private JPanel createControlPanel()
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{
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RelativeLayout rl = new RelativeLayout(RelativeLayout.Y_AXIS);
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rl.setAlignment(RelativeLayout.LEADING);
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rl.setFill( true );
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JPanel panel = new JPanel( rl );
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panel.setBorder( new TitledBorder("Configure Layout") );
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JPanel r1 = new JPanel( new GridLayout(1, 0, 5, 5) );
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r1.setBorder( new TitledBorder("Overlap:") );
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ButtonGroup bg1 = new ButtonGroup();
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above = new JRadioButton("Above");
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above.setSelected( true );
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r1.add( above );
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bg1.add( above );
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below = new JRadioButton("Below");
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r1.add( below );
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bg1.add( below );
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panel.add( r1 );
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JPanel r2 = new JPanel( new GridLayout(1, 0, 5, 5) );
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r2.setBorder( new TitledBorder("Overlap Position:") );
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xOffset = new JSpinner(new SpinnerNumberModel(20, -100, 100 ,5));
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r2.add( xOffset );
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r2.add( new JLabel("X") );
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yOffset = new JSpinner(new SpinnerNumberModel(0, -100, 100 ,5));
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r2.add( yOffset );
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r2.add( new JLabel("Y") );
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panel.add( r2 );
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JPanel r3 = new JPanel( new GridLayout(2, 0, 5, 5) );
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r3.setBorder( new TitledBorder("Popup Insets:") );
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top = new JSpinner(new SpinnerNumberModel(20, 0, 100 ,5));
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r3.add( top );
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r3.add( new JLabel("Top") );
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bottom = new JSpinner(new SpinnerNumberModel(0, 0, 100 ,5));
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r3.add( bottom );
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r3.add( new JLabel("Bottom") );
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left = new JSpinner(new SpinnerNumberModel(0, 0, 100 ,5));
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r3.add( left );
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r3.add( new JLabel("Left") );
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right = new JSpinner(new SpinnerNumberModel(0, 0, 100 ,5));
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r3.add( right );
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r3.add( new JLabel("Right") );
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panel.add( r3 );
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includeInvisible = new JCheckBox("Include Invisible");
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includeInvisible.setSelected( true );
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panel.add( includeInvisible );
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// panel.add(Box.createGlue(), new Float(1));
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panel.add(Box.createGlue(), Float.valueOf(1));
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JLabel label = new JLabel("Note: click on card for \"popup\"");
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panel.add( label );
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return panel;
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}
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private void createLayout()
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{
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Point overlap = new Point((Integer)xOffset.getValue(), (Integer)yOffset.getValue());
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layout = new OverlapLayout(overlap, above.isSelected());
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Insets popupInsets = new Insets(
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(Integer)top.getValue(), (Integer)left.getValue(), (Integer)bottom.getValue(), (Integer)right.getValue());
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layout.setPopupInsets( popupInsets );
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layout.setIncludeInvisible( includeInvisible.isSelected() );
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createPanel( layout );
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}
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private void createPanel(OverlapLayout lm)
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{
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JPanel panel = new JPanel(lm);
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panel.setBorder( new EmptyBorder(10, 10, 10, 10) );
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createCard(panel, "1", duke, false) ;
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createCard(panel, "2", duke, false) ;
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createCard(panel, "3", duke, false) ;
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createCard(panel, "4", duke, true) ;
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createCard(panel, "5", duke, false) ;
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Component c = panel.getComponent( layout.convertIndex(1) );
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layout.addLayoutComponent(c, OverlapLayout.POP_UP);
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scrollPane.setViewportView(panel);
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}
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private void createCard(Container c, String text, Icon icon, boolean invisible)
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{
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JPanel card = createCard(text, icon);
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c.add(card);
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if (invisible)
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{
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card.setVisible(false);
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}
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}
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public JPanel createCard(String text, Icon icon)
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{
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JPanel card = new JPanel( new BorderLayout() );
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card.setToolTipText("Duke " + text);
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card.setBackground( Color.WHITE );
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card.setBorder( new LineBorder(Color.BLACK) );
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JLabel north = new JLabel( text );
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north.setHorizontalAlignment(JLabel.LEFT);
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JLabel center = new JLabel( icon );
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JLabel south = new JLabel( text );
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south.setHorizontalAlignment(JLabel.RIGHT);
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card.add(north, BorderLayout.NORTH);
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card.add(center);
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card.add(south, BorderLayout.SOUTH);
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card.setName(text);
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card.addMouseListener( this );
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return card;
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}
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public void actionPerformed(ActionEvent e)
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{
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createLayout();
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}
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public void mousePressed(MouseEvent e)
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{
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Component c = e.getComponent();
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Boolean constraint = layout.getConstraints(c);
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if (constraint == null || constraint == OverlapLayout.POP_DOWN)
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layout.addLayoutComponent(c, OverlapLayout.POP_UP);
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else
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layout.addLayoutComponent(c, OverlapLayout.POP_DOWN);
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((JComponent)c).revalidate();
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}
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public void mouseMoved(MouseEvent e) {}
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public void mouseClicked(MouseEvent e) {}
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public void mouseEntered(MouseEvent e) {}
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public void mouseExited(MouseEvent e) {}
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public void mouseReleased(MouseEvent e) {}
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}
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}

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