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== 14. Changing the Look and Feel ==



<source lang="java">
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
public class ChangeLook {
public static void main(String args[]) {
final JFrame frame = new JFrame("Change Look");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
String lafClassName = null;
lafClassName = actionEvent.getActionCommand();
String finalLafClassName = lafClassName;
try {
UIManager.setLookAndFeel(finalLafClassName);
SwingUtilities.updateComponentTreeUI(frame);
} catch (Exception exception) {
JOptionPane.showMessageDialog(frame, "Can"t change look and feel", "Invalid PLAF",
JOptionPane.ERROR_MESSAGE);
}
}
};
UIManager.LookAndFeelInfo looks[] = UIManager.getInstalledLookAndFeels();
JComboBox comboBox = new JComboBox(new String[] { "a", "b" });
JPanel panel = new JPanel();
for (int i = 0, n = looks.length; i < n; i++) {
JButton button = new JButton(looks[i].getName());
button.setActionCommand(looks[i].getClassName());
button.addActionListener(actionListener);
panel.add(button);
}
frame.add(comboBox, BorderLayout.NORTH);
frame.add(panel, BorderLayout.SOUTH);
frame.setSize(350, 150);
frame.setVisible(true);
}
}</source>



== 14. Changing the Look and Feel to MotifLookAndFeel ==



<source lang="java">
import javax.swing.JFrame;
import javax.swing.UIManager;
public class ChangeLookFeelToMotifLookAndFeel {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
} catch (Exception e) {
System.err.println("Look and feel not set.");
}
JFrame aWindow = new JFrame("This is the Window Title");
aWindow.setBounds(50, 100, 300,300);
aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
aWindow.setVisible(true);
}
}</source>



== 14. Default look and feel can be set in a file called "swing.properties" located in the "<JAVAHOME>/lib" directory. ==



<source lang="java">
# Specify the default look and feel
swing.defaultlaf=com.sun.java.swing.plaf.windows.WindowsLookAndFeel</source>



== 14. Demonstrating the new GTK look and feel ==



<source lang="java">
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.UIManager;
public class GTKLookAndFeelDemo {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
} catch (Exception e) {
e.printStackTrace();
}
JLabel label = new JLabel("Label");
JTextField field = new JTextField("www.jexp.ru!");
JList list = new JList(new String[] { "A", "B", "C" });
JScrollPane listPane = new JScrollPane(list);
listPane.setPreferredSize(new Dimension(250, 100));
JScrollPane treePane = new JScrollPane(new JTree());
treePane.setPreferredSize(new Dimension(250, 100));
JButton button = new JButton("Click me");
JPanel cp = new JPanel();
cp.add(label);
cp.add(field);
cp.add(listPane);
cp.add(treePane);
cp.add(button);
JFrame frame = new JFrame();
frame.setTitle("Windows Look and Feel Demo");
frame.setPreferredSize(new Dimension(280, 300));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(cp);
frame.pack();
frame.setVisible(true);
}
}</source>



== 14. Get the system look and feel ==



<source lang="java">
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Main {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setSize(300, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("System LAF Demo");
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
SwingUtilities.updateComponentTreeUI(frame);
frame.setVisible(true);
}
}</source>



== 14. Install Cross Platform Look And Feel ==



<source lang="java">
import javax.swing.JFrame;
import javax.swing.UIManager;
public class GetCrossPlatformLookAnd {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
} catch (Exception e) {
System.err.println("Look and feel not set.");
}
JFrame aWindow = new JFrame("This is the Window Title");
aWindow.setBounds(50, 100, 300, 300);
aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
aWindow.setVisible(true);
}
}</source>



== 14. Late loading of icon image files: public Object makeIcon(Class baseClass, String imageFile). ==



<source lang="java">
Object iconObject = LookAndFeel.makeIcon(this.getClass(), "World.gif");
UIManager.put("Tree.leafIcon", iconObject);</source>



== 14. Listing the names of the look-and-feel classes that are installed with the JDK ==



<source lang="java">
import javax.swing.UIManager;
public class MainClass {
public static void main(String[] a) {
UIManager.LookAndFeelInfo[] looks = UIManager.getInstalledLookAndFeels();
for (UIManager.LookAndFeelInfo look : looks) {
System.out.println(look.getClassName());
}
}
}</source>



<pre class=codeResult>javax.swing.plaf.metal.MetalLookAndFeel
com.sun.java.swing.plaf.motif.MotifLookAndFeel
com.sun.java.swing.plaf.windows.WindowsLookAndFeel
com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel</pre>

== 14. LookAndFeel Introduction ==

<p>The default JDK has provided a few subclass of LookAndFeel that you can use as the argument
to setLookAndFeel.</p>
<OL><LI>com.sun.java.swing.plaf.gtk.GTKLookAndFeel</LI><LI>javax.swing.plaf.metal.MetalLookAndFeel</LI><LI>com.sun.java.swing.plaf.windows.WindowsLookAndFeel</LI><LI>com.sun.java.swing.plaf.motif.MotifLookAndFeel</LI></OL>
<p>For instance, the following code forces the application to use the Motif look and feel.</p>



<source lang="java">
UIManager.setLookAndFeel ("com.sun.java.swing.plaf.motif.MotifLookAndFeel");</source>



== 14. Start up a program from the command line with a new look and feel. ==

<pre class=codeResult>java -Dswing.defaultlaf=com.sun.java.swing.plaf.motif.MotifLookAndFeel ChangeLook</pre>

== 14. Windows look and feel in Java 6 ==



<source lang="java">
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.UIManager;
public class WindowsLookAndFeelDemo {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception e) {
e.printStackTrace();
}
JLabel label = new JLabel("Label");
JTextField field = new JTextField("www.jexp.ru!");
JList list = new JList(new String[] { "A", "B", "C" });
JScrollPane listPane = new JScrollPane(list);
listPane.setPreferredSize(new Dimension(250, 100));
JScrollPane treePane = new JScrollPane(new JTree());
treePane.setPreferredSize(new Dimension(250, 100));
JButton button = new JButton("Click me");
JPanel cp = new JPanel();
cp.add(label);
cp.add(field);
cp.add(listPane);
cp.add(treePane);
cp.add(button);
JFrame frame = new JFrame();
frame.setTitle("Windows Look and Feel Demo");
frame.setPreferredSize(new Dimension(280, 300));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(cp);
frame.pack();
frame.setVisible(true);
}
}</source>

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в 17:44, 31 мая 2010

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