Your calculation of preferred size is incorrect.
BasicButtonUI
uses SwingUtilities.layoutCompoundLabel
, examined here. In a label, the ellipsis is added if the string is too long, but a button is typically sized to fit its entire text.
Absent a better understanding of your context, I would use a sizeVariant
, shown below. I've also shown a simple BasicButtonUI
example using a smaller, derived Font
. The UI menu can be used in conjunction with Quaqua for testing.
import java.awt.Color;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;
import javax.swing.AbstractButton;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.plaf.basic.BasicButtonUI;
/**
* @see https://stackoverflow.com/a/14599176/230513
* @see https://stackoverflow.com/a/11949899/230513
*/
public class Test {
private void display() {
JFrame f = new JFrame("Test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setBackground(new Color(0xfff0f0f0));
f.setLayout(new GridLayout(0, 1));
f.add(createToolBar(f));
f.add(variantPanel("mini"));
f.add(variantPanel("small"));
f.add(variantPanel("regular"));
f.add(variantPanel("large"));
JPanel customPanel = new JPanel();
customPanel.add(createCustom("One"));
customPanel.add(createCustom("Two"));
customPanel.add(createCustom("Three"));
f.add(customPanel);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
private static JPanel variantPanel(String size) {
JPanel variantPanel = new JPanel();
variantPanel.add(createVariant("One", size));
variantPanel.add(createVariant("Two", size));
variantPanel.add(createVariant("Three", size));
return variantPanel;
}
private static JButton createVariant(String name, String size) {
JButton b = new JButton(name);
b.putClientProperty("JComponent.sizeVariant", size);
return b;
}
private static JButton createCustom(String name) {
JButton b = new JButton(name) {
@Override
public void updateUI() {
super.updateUI();
setUI(new CustomButtonUI());
}
};
return b;
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new Test().display();
}
});
}
private static class CustomButtonUI extends BasicButtonUI {
private static final Color BACKGROUND_COLOR = new Color(173, 193, 226);
private static final Color SELECT_COLOR = new Color(102, 132, 186);
@Override
protected void paintText(Graphics g, AbstractButton b, Rectangle r, String t) {
super.paintText(g, b, r, t);
g.setColor(SELECT_COLOR);
g.drawRect(r.x, r.y, r.width, r.height);
}
@Override
protected void paintFocus(Graphics g, AbstractButton b,
Rectangle viewRect, Rectangle textRect, Rectangle iconRect) {
super.paintFocus(g, b, viewRect, textRect, iconRect);
g.setColor(Color.blue.darker());
g.drawRect(viewRect.x, viewRect.y, viewRect.width, viewRect.height);
}
@Override
protected void paintButtonPressed(Graphics g, AbstractButton b) {
if (b.isContentAreaFilled()) {
g.setColor(SELECT_COLOR);
g.fillRect(0, 0, b.getWidth(), b.getHeight());
}
}
@Override
protected void installDefaults(AbstractButton b) {
super.installDefaults(b);
b.setFont(b.getFont().deriveFont(11f));
b.setBackground(BACKGROUND_COLOR);
}
public CustomButtonUI() {
super();
}
}
private static JToolBar createToolBar(final Component parent) {
final UIManager.LookAndFeelInfo[] available =
UIManager.getInstalledLookAndFeels();
List<String> names = new ArrayList<String>();
for (UIManager.LookAndFeelInfo info : available) {
names.add(info.getName());
}
final JComboBox combo = new JComboBox(names.toArray());
String current = UIManager.getLookAndFeel().getName();
combo.setSelectedItem(current);
combo.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
int index = combo.getSelectedIndex();
try {
UIManager.setLookAndFeel(
available[index].getClassName());
SwingUtilities.updateComponentTreeUI(parent);
} catch (Exception e) {
e.printStackTrace(System.err);
}
}
});
JToolBar bar = new JToolBar("L&F");
bar.setLayout(new FlowLayout(FlowLayout.LEFT));
bar.add(combo);
return bar;
}
}
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