我知道您可以modify the LaF properties,但是如何不这样做却如何完成呢?我只问一下,因为setBackground
似乎没有这样做。
请注意,我要更改以下属性:
TabbedPane.background
(或TabbedPane.contentAreaColor
吗?)TabbedPane.tabAreaBackground
最佳答案
以 TabComponentsDemo
为例,setBackgroundAt()
似乎可以工作:
private void initTabComponent(int i) {
pane.setTabComponentAt(i, new ButtonTabComponent(pane));
pane.setBackgroundAt(i, Color.getHSBColor((float)i/tabNumber, 1, 1));
}
附录:@camickr很有帮助地观察到,目标组件必须是opaque。
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
/** @see http://stackoverflow.com/questions/8752037 */
public class TabColors extends JPanel {
private static final int MAX = 5;
private final JTabbedPane pane = new JTabbedPane();
public TabColors() {
for (int i = 0; i < MAX; i++) {
Color color = Color.getHSBColor((float) i / MAX, 1, 1);
pane.add("Tab " + String.valueOf(i), new TabContent(i, color));
pane.setBackgroundAt(i, color);
}
this.add(pane);
}
private static class TabContent extends JPanel {
private TabContent(int i, Color color) {
setOpaque(true);
setBackground(color);
add(new JLabel("Tab content " + String.valueOf(i)));
}
@Override
public Dimension getPreferredSize() {
return new Dimension(320, 240);
}
}
private void display() {
JFrame f = new JFrame("TabColors");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(this);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new TabColors().display();
}
});
}
}