[英]How to change background color of JTabbedPane?
I know you can modify the LaF properties , but how do you accomplish this without doing such? 我知道您可以修改LaF属性 ,但是如何在不执行此操作的情况下完成此操作? I only ask because setBackground
doesn't seem to do it. 我只是问,因为setBackground
似乎没有这样做。
Note that I'm looking to change the following properties: 请注意,我正在寻找更改以下属性:
TabbedPane.background
(or TabbedPane.contentAreaColor
?) TabbedPane.background
(或TabbedPane.contentAreaColor
?) TabbedPane.tabAreaBackground
Using TabComponentsDemo
as an example, setBackgroundAt()
seems to work: 使用TabComponentsDemo
作为示例, setBackgroundAt()
似乎工作:
private void initTabComponent(int i) {
pane.setTabComponentAt(i, new ButtonTabComponent(pane));
pane.setBackgroundAt(i, Color.getHSBColor((float)i/tabNumber, 1, 1));
}
Addendum: As @camickr helpfully observed, the target component must be opaque . 附录:正如@camickr所见,目标组件必须是不透明的 。
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();
}
});
}
}
You can also do the following: 您还可以执行以下操作:
for (int i = 0; i < this.getTabCount(); i++) {
this.getComponentAt(i).setBackground(Color.DARK_GRAY);
}
or 要么
for (int i = 0; i < this.getTabCount(); i++) {
this.setBackgroundAt(i, Color.DARK_GRAY);
this.getComponentAt(i).setBackground(Color.DARK_GRAY);
}
for tab and panel backgrounds 用于标签和面板背景
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