java lookandfeel nimbus_如何使用Nimbus LookAndFeel更改JToolTip的背景颜...

在使用Nimbus LookAndFeel的基于Swing的Java应用程序中,我尝试设置工具提示的背景颜色.所以我创建了一个JToolTip的子类,并通过重写createToolTip()在我的组件中使用它.到目前为止很好并且工具提示正确显示,但背景颜色不会改变.前景色按预期设置.

将LookAndFeel更改为例如金属我可以按预期设置颜色.

这是一个能够在Metal和Nimbus之间切换的小例子.正如yopu希望看到的那样,按钮工具提示的背景颜色仅在使用Metal时设置.

import java.awt.Color;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JToolTip;

public class TooltipTestApp {

private static final String METAL_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";

private static final String NIMBUS_LOOK_AND_FEEL = "com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel";

private static JButton button;

private static String usedLookAndFeel = NIMBUS_LOOK_AND_FEEL;

public static void main(String args[]) {

button = new JButton() {

@Override

public JToolTip createToolTip() {

JToolTip toolTip = super.createToolTip();

toolTip.setBackground(Color.BLACK);

toolTip.setForeground(Color.RED);

return toolTip;

}

};

button.addActionListener(new java.awt.event.ActionListener() {

@Override

public void actionPerformed(java.awt.event.ActionEvent evt) {

TooltipTestApp.toggleLookAndFeel();

}

});

button.setToolTipText("Some text");

JFrame frame = new JFrame("TooltipTestApp");

TooltipTestApp.toggleLookAndFeel();

frame.add(button);

frame.setSize(450, 100);

frame.setVisible(true);

}

private static void toggleLookAndFeel() {

try {

if (usedLookAndFeel.equals(METAL_LOOK_AND_FEEL)) {

usedLookAndFeel = NIMBUS_LOOK_AND_FEEL;

} else {

usedLookAndFeel = METAL_LOOK_AND_FEEL;

}

UIManager.setLookAndFeel(usedLookAndFeel);

String lookAndFeelName = usedLookAndFeel.substring(usedLookAndFeel.lastIndexOf(".") + 1);

button.setText("This is: " + lookAndFeelName);

} catch (Exception ex) {

ex.printStackTrace();

}

}

}