Java tutorial
/* * * Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */ import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import javax.swing.AbstractButton; import javax.swing.BorderFactory; import javax.swing.BoxLayout; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTabbedPane; import javax.swing.border.LineBorder; import javax.swing.border.TitledBorder; public class BoxAlignmentDemo extends JPanel { public BoxAlignmentDemo() { super(new BorderLayout()); JTabbedPane tabbedPane = new JTabbedPane(); JPanel buttonRow = new JPanel(); // Use default FlowLayout. buttonRow.add(createButtonRow(false)); buttonRow.add(createButtonRow(true)); tabbedPane.addTab("Altering alignments", buttonRow); JPanel labelAndComponent = new JPanel(); // Use default FlowLayout. labelAndComponent.add(createLabelAndComponent(false)); labelAndComponent.add(createLabelAndComponent(true)); tabbedPane.addTab("X alignment mismatch", labelAndComponent); JPanel buttonAndComponent = new JPanel(); // Use default FlowLayout. buttonAndComponent.add(createYAlignmentExample(false)); buttonAndComponent.add(createYAlignmentExample(true)); tabbedPane.addTab("Y alignment mismatch", buttonAndComponent); // Add tabbedPane to this panel. add(tabbedPane, BorderLayout.CENTER); } protected JPanel createButtonRow(boolean changeAlignment) { JButton button1 = new JButton("A JButton", createImageIcon("images/middle.gif")); button1.setVerticalTextPosition(AbstractButton.BOTTOM); button1.setHorizontalTextPosition(AbstractButton.CENTER); JButton button2 = new JButton("Another JButton", createImageIcon("images/geek-cght.gif")); button2.setVerticalTextPosition(AbstractButton.BOTTOM); button2.setHorizontalTextPosition(AbstractButton.CENTER); String title; if (changeAlignment) { title = "Desired"; button1.setAlignmentY(BOTTOM_ALIGNMENT); button2.setAlignmentY(BOTTOM_ALIGNMENT); } else { title = "Default"; } JPanel pane = new JPanel(); pane.setBorder(BorderFactory.createTitledBorder(title)); pane.setLayout(new BoxLayout(pane, BoxLayout.X_AXIS)); pane.add(button1); pane.add(button2); return pane; } protected JPanel createLabelAndComponent(boolean doItRight) { JPanel pane = new JPanel(); JComponent component = new JPanel(); Dimension size = new Dimension(150, 100); component.setMaximumSize(size); component.setPreferredSize(size); component.setMinimumSize(size); TitledBorder border = new TitledBorder(new LineBorder(Color.black), "A JPanel", TitledBorder.CENTER, TitledBorder.BELOW_TOP); border.setTitleColor(Color.black); component.setBorder(border); JLabel label = new JLabel("This is a JLabel"); String title; if (doItRight) { title = "Matched"; label.setAlignmentX(CENTER_ALIGNMENT); } else { title = "Mismatched"; } pane.setBorder(BorderFactory.createTitledBorder(title)); pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS)); pane.add(label); pane.add(component); return pane; } protected JPanel createYAlignmentExample(boolean doItRight) { JPanel pane = new JPanel(); String title; JComponent component1 = new JPanel(); Dimension size = new Dimension(100, 50); component1.setMaximumSize(size); component1.setPreferredSize(size); component1.setMinimumSize(size); TitledBorder border = new TitledBorder(new LineBorder(Color.black), "A JPanel", TitledBorder.CENTER, TitledBorder.BELOW_TOP); border.setTitleColor(Color.black); component1.setBorder(border); JComponent component2 = new JPanel(); size = new Dimension(100, 50); component2.setMaximumSize(size); component2.setPreferredSize(size); component2.setMinimumSize(size); border = new TitledBorder(new LineBorder(Color.black), "A JPanel", TitledBorder.CENTER, TitledBorder.BELOW_TOP); border.setTitleColor(Color.black); component2.setBorder(border); if (doItRight) { title = "Matched"; } else { component1.setAlignmentY(TOP_ALIGNMENT); title = "Mismatched"; } pane.setBorder(BorderFactory.createTitledBorder(title)); pane.setLayout(new BoxLayout(pane, BoxLayout.X_AXIS)); pane.add(component1); pane.add(component2); return pane; } /** Returns an ImageIcon, or null if the path was invalid. */ protected static ImageIcon createImageIcon(String path) { java.net.URL imgURL = BoxAlignmentDemo.class.getResource(path); if (imgURL != null) { return new ImageIcon(imgURL); } else { System.err.println("Couldn't find file: " + path); return null; } } /** * Create the GUI and show it. For thread safety, this method should be * invoked from the event-dispatching thread. */ private static void createAndShowGUI() { // Create and set up the window. JFrame frame = new JFrame("BoxAlignmentDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Create and set up the content pane. BoxAlignmentDemo newContentPane = new BoxAlignmentDemo(); newContentPane.setOpaque(true); // content panes must be opaque frame.setContentPane(newContentPane); // Display the window. frame.pack(); frame.setVisible(true); } public static void main(String[] args) { // Schedule a job for the event-dispatching thread: // creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } }