import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.jvnet.substance.SubstanceLookAndFeel;
/**
* Test application that shows the use of the
* {@link SubstanceLookAndFeel#setBasicFontSize(int)} APIs.
*
* @author Kirill Grouchnikov
* @see SubstanceLookAndFeel#setBasicFontSize(int)
*/
public class SetBasicFontSize extends JFrame {
/**
* Creates the main frame for <code>this</code> sample.
*/
public SetBasicFontSize() {
super("Set basic font size");
this.setLayout(new BorderLayout());
JPanel panel = new JPanel(new FlowLayout());
// create a slider to control the basic font size.
final JSlider basicFontSizeSlider = new JSlider(5, 20,
SubstanceLookAndFeel.getBasicFontSize());
basicFontSizeSlider.setPaintLabels(true);
basicFontSizeSlider.setPaintTicks(true);
basicFontSizeSlider.setMajorTickSpacing(5);
basicFontSizeSlider.setMinorTickSpacing(1);
basicFontSizeSlider.setSnapToTicks(true);
basicFontSizeSlider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent e) {
// if the value is adjusting - ignore. This is done
// to make CPU usage better.
if (basicFontSizeSlider.getValueIsAdjusting())
return;
SwingUtilities.invokeLater(new Runnable() {
public void run() {
// Set the basic font size
SubstanceLookAndFeel
.setBasicFontSize(basicFontSizeSlider
.getValue());
// reset the LAF to have the changes
try {
UIManager
.setLookAndFeel(new SubstanceLookAndFeel());
} catch (Exception exc) {
}
SwingUtilities
.updateComponentTreeUI(SetBasicFontSize.this);
}
});
}
});
panel.add(basicFontSizeSlider);
this.add(panel, BorderLayout.CENTER);
JPanel controls = new JPanel(new FlowLayout(FlowLayout.RIGHT));
JButton getBasicFontSize = new JButton("Get current basic font size");
getBasicFontSize.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(SetBasicFontSize.this,
"Current basic font size is "
+ SubstanceLookAndFeel.getBasicFontSize());
}
});
controls.add(getBasicFontSize);
this.add(controls, BorderLayout.SOUTH);
this.setSize(400, 200);
this.setLocationRelativeTo(null);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
/**
* The main method for <code>this</code> sample. The arguments are
* ignored.
*
* @param args
* Ignored.
* @throws Exception
* If some exception occured. Note that there is no special
* treatment of exception conditions in <code>this</code>
* sample code.
*/
public static void main(String[] args) throws Exception {
UIManager.setLookAndFeel(new SubstanceLookAndFeel());
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new SetBasicFontSize().setVisible(true);
}
});
}
}
The screenshot below shows application frame under default
font size (11 under Windows) - this method has not been called:
The screenshot below shows application frame after this
method has been called with value 14 (note how it affects all UI elements):
The screenshot below shows application frame after this
method has been called with value 9 (note how it affects all UI elements):
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