我正在编写一个自定义BasicTabbedPaneUI
,我已覆盖paintText
,并更改了其中的fontSize,但这在选项卡的右侧留下了多余的空白。
如您所见,填充物相当大,我希望它与左侧的填充物相同。这是我的代码
import sun.swing.SwingUtilities2;
import javax.swing.*;
import javax.swing.plaf.basic.BasicTabbedPaneUI;
import java.awt.*;
public class UITest {
public static void main(String[] args) {
JFrame jFrame = new JFrame();
JTabbedPane jTabbedPane = new JTabbedPane();
jTabbedPane.add(new JPanel(), "This is a test title");
jTabbedPane.add(new JPanel(), "This is also a test title");
jTabbedPane.setUI(new LynxTabbedPane());
jFrame.setContentPane(jTabbedPane);
jFrame.setSize(300, 100);
jFrame.setVisible(true);
}
public static class LynxTabbedPane extends BasicTabbedPaneUI {
@Override
protected void paintText(Graphics g, int tabPlacement, Font font, FontMetrics metrics, int tabIndex, String title, Rectangle textRect, boolean isSelected) {
Font myFont = new Font(font.getFontName(), Font.BOLD, 10);
g.setFont(myFont);
g.setColor(Color.WHITE);
SwingUtilities2.drawStringUnderlineCharAt(tabPane,
g, title,
tabPane.getDisplayedMnemonicIndexAt(tabIndex),
textRect.x, metrics.getAscent() + 2);
}
}
}
我本以为我需要计算tabWidth,所以我尝试覆盖它并从中减去5,但是它没有改变,所以现在我一无所知。
@Override
protected int calculateTabWidth(int tabPlacement, int tabIndex, FontMetrics metrics) {
return super.calculateTabWidth(tabPlacement, tabIndex, metrics) - 5;
}
答案 0 :(得分:1)
最终在setFont
对象上使用JTabbedPane
,因为它会自动处理选项卡的大小
Font myFont = new Font(tabbedPane.getFont().getFontName(), Font.BOLD, 10);
tabbedPane.setFont(myFont);