如何在Synth LaF中制作几个jScrollbar的自定义外观？

Question

在我们的应用程序中，我们必须使用css来自定义Swing组件的外观。现在我们有一些手动编写的css引擎，但速度很慢，需要大量额外的代码才能再应用一个css文件。所以现在我们尝试使用Synth的外观和感觉来使ui更改 native 。

对于大多数组件，我们设置名称并使用它们来绑定样式。但也有几个滚动条，它们有不同的css和不同的外观。影响滚动条拇指的唯一方法是用户区域ScrollBarThumb，我们不能为它设置名称，因为它不是JComponent。由于使用区域而不是名称，因此不可能有不同的拇指。有没有解决方法？

Answer 1

• 来自Synt L＆amp; F的实例我只使用Nimbus，关于Nimbus L&F的疯狂示例，其余方法在Nimbus Defaults

来自代码（Java6）

import com.sun.java.swing.Painter;
import java.awt.Color;
import java.awt.Graphics2D;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

public class ScrollDemo extends JFrame {

    private static final long serialVersionUID = 1L;

    public ScrollDemo() {
        JTextField field = new JTextField();
        String[] columnNames = {"Column"};
        Object[][] data = {
            {"A"}, {"B"}, {"C"}, {"D"}, {"E"}, {"F"},
            {"A"}, {"B"}, {"C"}, {"D"}, {"E"}, {"F"},
            {"A"}, {"B"}, {"C"}, {"D"}, {"E"}, {"F"},
            {"A"}, {"B"}, {"C"}, {"D"}, {"E"}, {"F"},
            {"A"}, {"B"}, {"C"}, {"D"}, {"E"}, {"F"},};

        add(new JScrollPane(new JTable(data, columnNames)));
        pack();
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);
    }

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
        } catch (Exception fail) {
        }
        UIManager.getLookAndFeelDefaults().put("ScrollBar:ScrollBarThumb[Enabled].backgroundPainter",
                new FillPainter(new Color(255, 169, 191)));
        UIManager.getLookAndFeelDefaults().put("ScrollBar:ScrollBarThumb[MouseOver].backgroundPainter",
                new FillPainter(new Color(127, 255, 191)));
        UIManager.getLookAndFeelDefaults().put("ScrollBar:ScrollBarTrack[Enabled].backgroundPainter",
                new FillPainter(new Color(0, 212, 255)));
        UIManager.getLookAndFeelDefaults().put("ScrollBar:\"ScrollBar.button\".size", 20);
        //UIManager.getLookAndFeelDefaults().put("ScrollBar.decrementButtonGap", 10);
        //UIManager.getLookAndFeelDefaults().put("ScrollBar.incrementButtonGap", 10);
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                ScrollDemo scrollDemo = new ScrollDemo();
            }
        });
    }
}

class FillPainter implements Painter<JComponent> {

    private final Color color;

    public FillPainter(Color c) {
        color = c;
    }

    @Override
    public void paint(Graphics2D g, JComponent object, int width, int height) {
        g.setColor(color);
        g.fillRect(0, 0, width - 1, height - 1);
    }
}