Question

在Java Swing应用程序中，我正在尝试灵气的外观和感觉。它在JdesktopPane控件中看起来很棒，但我希望我的所有desktoppane都有不同的颜色，但主题很好。

有没有办法改变灵气外观的背景颜色？

以下是应用nimbus外观的示例代码。

   try {
        for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
          if ("Nimbus".equals(info.getName())) {
          UIManager.setLookAndFeel(info.getClassName());
          break;
         }
        }
       }  
     catch (Exception e) {}

Answer 1

UIManager.put("nimbusBase", new Color(...));
UIManager.put("nimbusBlueGrey", new Color(...));
UIManager.put("control", new Color(...))

来自l&f tutorial

的

Answer 2

Nimbus使用看起来像矢量类型绘制例程来绘制背景来绘制花哨的背景图案。要在nimbus的情况下更改JDesktopPane的背景，您需要更改JDesktopPane使用的背景Painter，只需用您需要的背景颜色（例如灰色）填充窗格。然后将"DesktopPane[Enabled].backgroundPainter"属性设置为画家对象。例如，观看下面给出的代码：

import java.awt.Graphics2D;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JDesktopPane;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.UIManager.LookAndFeelInfo;
import com.sun.java.swing.Painter;
import java.awt.Color;

public class NimbusFrame extends JFrame
{
    private JDesktopPane desktop;
    public void prepareAndShowGUI()
    {
        desktop = new MyDesktopPane();
        getContentPane().add(desktop);
        setSize(300,400);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }
    class MyDesktopPane extends JDesktopPane
    {
        @Override
        public void updateUI() 
        {
            if ("Nimbus".equals(UIManager.getLookAndFeel().getName())) 
            {
                UIDefaults map = new UIDefaults();
                Painter<JComponent> painter = new Painter<JComponent>() 
                {
                    @Override
                    public void paint(Graphics2D g, JComponent c, int w, int h) 
                    {
                        g.setColor(Color.gray);
                        g.fillRect(0, 0, w, h);
                    }
                };
                map.put("DesktopPane[Enabled].backgroundPainter", painter);
                putClientProperty("Nimbus.Overrides", map);
            }
            super.updateUI();
        }
    }
    public static void main(String st[])
    {
        try
        {
            for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) 
            {
                    if ("Nimbus".equalsIgnoreCase(info.getName())) 
                {
                        UIManager.setLookAndFeel(info.getClassName());
                        break;
                    }
                }
        }catch(Exception ex){}
        SwingUtilities.invokeLater( new Runnable()
        {
            public void run()
            {
                NimbusFrame frame = new NimbusFrame();
                frame.prepareAndShowGUI();
            }
        });
    }
}

如何使用java更改nimbus外观的背景颜色

2 个答案: