问题：

覆盖光晕颜色

翟柏

2023-03-14

我们正在使用Nimbus LaF开发Swing应用程序。我们已经更改了许多Nimbus默认值（控件、文本、NimbusLightbackground等）以具有黑暗主题。

现在，我们在呈现JLists和JComboxes时遇到了很大的麻烦，因为呈现程序显然使用了NimbusLightBackground颜色作为所选文本的前景。这会导致深蓝色背景上出现深灰色文本-不好。

我曾尝试通过UIManager全局覆盖Nimbus默认值（“ComboBox:\”ComboBox.listRenderer\“[Selected].textForeground”等）中任何适用的外观键。putDefault（）和每组件重写，但无法得到任何更改。

即使是SwingX Highlighter似乎也无法覆盖这种行为，至少在combobox下拉列表中是如此。

关于如何为J（X）列表和J（X）组合框下拉列表设置所选文本的前景色，有什么想法吗？

我最新的每组件覆盖尝试：

JXComboBox comboBox = new JXComboBox();
UIDefaults comboBoxTheme = new UIDefaults();
comboBoxTheme.put("nimbusLightBackground", new Color(0xFFFAFA));
comboBoxTheme.put("ComboBox:\"ComboBox.listRenderer\"[Selected].textForeground", new Color(0xFFFAFA));
comboBox.putClientProperty("Nimbus.Overrides.InheritDefaults", true);
comboBox.putClientProperty("Nimbus.Overrides", comboBoxTheme);
SwingUtilities.updateComponentTreeUI(comboBox);

和应用程序范围的灵气默认值：

ColorUIResource backgroundUI = new ColorUIResource(0x494949);
ColorUIResource textUI = new ColorUIResource(0xFFFAFA);
ColorUIResource controlBackgroundUI = new ColorUIResource(0x5F5F4D);
ColorUIResource infoBackgroundUI = new ColorUIResource(0x2f5cb4);
ColorUIResource infoUI = new ColorUIResource(0x2f5cb4);
ColorUIResource lightBackgroundUI = new ColorUIResource(0x5D5D5B);
ColorUIResource focusUI = new ColorUIResource(0x39698a);

UIManager.put("control", backgroundUI);
UIManager.put("text", textUI);
UIManager.put("nimbusLightBackground", lightBackgroundUI);
UIManager.put("info", infoUI);
UIManager.put("nimbusInfoBlue", infoBackgroundUI);
UIManager.put("nimbusBase", controlBackgroundUI);
UIManager.put("nimbusBlueGrey", controlBackgroundUI);
UIManager.put("nimbusFocus", focusUI);

所有这些都是用Java7U55实现的，尽管我怀疑这一点，因为似乎有相当一段时间没有人维护Swing/Nimbus。

PS：我当然读过这个问题和其他问题，但没有找到一个有效的答案。

编辑：这是一个演示问题的SSCCE。它创建了一个JFrame，顶部有一个仅默认组合框，中间有一个列表，底部有一个每个组件覆盖的组合框。在列表中或从框下拉列表中选择值时可以看到问题。

package sscce;

import java.awt.BorderLayout;
import java.awt.Color;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.plaf.ColorUIResource;

public class ForegroundProblemDemo extends JFrame {

public ForegroundProblemDemo() {
    super("Demo");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JComboBox<String> comboBoxWithDefaults = createComboBox();
    JComboBox<String> comboBoxWithOverrides = createComboBox();
    JList<String> list = createList();
    addOverrides(comboBoxWithOverrides);

    getContentPane().setLayout(new BorderLayout());
    getContentPane().add(new JScrollPane(list), BorderLayout.CENTER);
    getContentPane().add(comboBoxWithDefaults, BorderLayout.NORTH);
    getContentPane().add(comboBoxWithOverrides, BorderLayout.SOUTH);

    pack();
    setLocationRelativeTo(null);
    setVisible(true);
}

JComboBox<String> createComboBox() {
    JComboBox<String> comboBox = new JComboBox<>(new String[] {"A","B","C","D"});
    return comboBox;
}

JList<String> createList() {
    JList<String> list = new JList<>(new String[] {"A","B","C","D"});
    return list;
}

void addOverrides(JComponent component) {
    UIDefaults theme = new UIDefaults();
    theme.put("nimbusLightBackground", new Color(0xFFFAFA));
    theme.put("ComboBox:\"ComboBox.listRenderer\"[Selected].textForeground", new Color(0xFFFAFA));
    component.putClientProperty("Nimbus.Overrides.InheritDefaults", true);
    component.putClientProperty("Nimbus.Overrides", theme);
    SwingUtilities.updateComponentTreeUI(component);
}


public static void main(String... args) throws Throwable {
    ColorUIResource backgroundUI = new ColorUIResource(0x494949);
    ColorUIResource textUI = new ColorUIResource(0xFFFAFA);
    ColorUIResource controlBackgroundUI = new ColorUIResource(0x5F5F4D);
    ColorUIResource infoBackgroundUI = new ColorUIResource(0x2f5cb4);
    ColorUIResource infoUI = new ColorUIResource(0x2f5cb4);
    ColorUIResource lightBackgroundUI = new ColorUIResource(0x5D5D5B);
    ColorUIResource focusUI = new ColorUIResource(0x39698a);
    UIManager.put("control", backgroundUI);
    UIManager.put("text", textUI);
    UIManager.put("nimbusLightBackground", lightBackgroundUI);
    UIManager.put("info", infoUI);
    UIManager.put("nimbusInfoBlue", infoBackgroundUI);
    UIManager.put("nimbusBase", controlBackgroundUI);
    UIManager.put("nimbusBlueGrey", controlBackgroundUI);
    UIManager.put("nimbusFocus", focusUI);

    for (LookAndFeelInfo lafInfo : UIManager.getInstalledLookAndFeels()) {
        if ("Nimbus".equals(lafInfo.getName())) {
            UIManager.setLookAndFeel(lafInfo.getClassName());
            break;
        }
    }

    new ForegroundProblemDemo();
}

}

编辑2：抱歉，应该之前提到过：对于列表，使用setSelectionForeground（）方法很容易解决问题。对于ComboBox，我还没有找到缺少自定义渲染器的方法。所以我在这里的主要重点是ComboBox。

共有2个答案

邢永安

2023-03-14

我不喜欢这个答案，我很乐意接受任何一个告诉我如何使用光环设置的答案

我最终做的是——如果我能找到更好的解决方案，我会很高兴改变的——是：

我创建了一个ListCellRenderer实现，它包装了DefaultListCellRenderer，并在isSelected参数为true时设置前景色。它很管用，但我一点也不喜欢它，原因如下：

其他所有自定义渲染器（谢天谢地，不是很多）都必须实现相同的攻击，这违反了DRY原则

不管怎样，这是为那些可能有同样问题的孤独流浪者编写的代码。

import java.awt.Color;
import java.awt.Component;

import javax.swing.DefaultListCellRenderer;
import javax.swing.JList;
import javax.swing.ListCellRenderer;


@SuppressWarnings("rawtypes")
public class ThemeCompliantListCellRenderer implements ListCellRenderer {

private ListCellRenderer wrappedRenderer = new DefaultListCellRenderer();
private Color textColor = new Color(0xFFFAFA); 

@Override
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
    @SuppressWarnings("unchecked")
    Component c = wrappedRenderer.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
    if (isSelected) {
        c.setForeground(textColor);
    }
    return c;
}

public void setSelectedForeground(Color color) {
    textColor = color;
}
}

古文康

2023-03-14

看看发生了什么，Win8.164b，Java7，JDK 1。7_021，通过使用全矩形画家，

import java.awt.*;
import java.util.Vector;
import javax.swing.*;
import javax.swing.UIManager;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.nimbus.AbstractRegionPainter;

public class MyComboBox {

    private Vector<String> listSomeString = new Vector<String>();
    private JComboBox someComboBox = new JComboBox(listSomeString);
    private JComboBox editableComboBox = new JComboBox(listSomeString);
    private JComboBox non_EditableComboBox = new JComboBox(listSomeString);
    private JFrame frame;

    public MyComboBox() {
        listSomeString.add("-");
        listSomeString.add("Snowboarding");
        listSomeString.add("Rowing");
        listSomeString.add("Knitting");
        listSomeString.add("Speed reading");
        someComboBox.setPrototypeDisplayValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
        someComboBox.setFont(new Font("Serif", Font.BOLD, 16));
        someComboBox.setEditable(true);
        someComboBox.getEditor().getEditorComponent().setBackground(Color.YELLOW);
        ((JTextField) someComboBox.getEditor().getEditorComponent()).setBackground(Color.YELLOW);
        editableComboBox.setPrototypeDisplayValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
        editableComboBox.setFont(new Font("Serif", Font.BOLD, 16));
        editableComboBox.setEditable(true);
        JTextField text = ((JTextField) editableComboBox.getEditor().getEditorComponent());
        text.setBackground(Color.YELLOW);
        /*JComboBox coloredArrowsCombo = editableComboBox;
         Component[] comp = coloredArrowsCombo.getComponents();
         for (int i = 0; i < comp.length; i++) {
         if (comp[i] instanceof MetalComboBoxButton) {
         MetalComboBoxButton coloredArrowsButton = (MetalComboBoxButton) comp[i];
         coloredArrowsButton.setBackground(null);
         break;
         }
         }*/
        non_EditableComboBox.setPrototypeDisplayValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
        non_EditableComboBox.setFont(new Font("Serif", Font.BOLD, 16));
        frame = new JFrame();
        frame.setLayout(new GridLayout(0, 1, 10, 10));
        frame.add(someComboBox);
        frame.add(editableComboBox);
        frame.add(non_EditableComboBox);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocation(100, 100);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        try {
            for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(laf.getName())) {
                    UIManager.setLookAndFeel(laf.getClassName());
                    UIManager.getLookAndFeelDefaults().put("ComboBox[Enabled].backgroundPainter",
                            new javax.swing.plaf.nimbus.AbstractRegionPainter() {
                        @Override
                        protected AbstractRegionPainter.PaintContext getPaintContext() {
                            return new AbstractRegionPainter.PaintContext(null, null, false);
                        }

                        @Override
                        protected void doPaint(Graphics2D g, JComponent c,
                                int width, int height, Object[] extendedCacheKeys) {
                            g.setColor(Color.MAGENTA);
                            g.fill(new Rectangle(0, 0, width, height));
                        }
                    });
                    UIManager.getLookAndFeelDefaults().put("ComboBox[Focused+Pressed].backgroundPainter",
                            new javax.swing.plaf.nimbus.AbstractRegionPainter() {
                        @Override
                        protected AbstractRegionPainter.PaintContext getPaintContext() {
                            return new AbstractRegionPainter.PaintContext(null, null, false);
                        }

                        @Override
                        protected void doPaint(Graphics2D g, JComponent c,
                                int width, int height, Object[] extendedCacheKeys) {
                            g.setColor(Color.CYAN);
                            g.fill(new Rectangle(0, 0, width, height));
                        }
                    });
                    UIManager.getLookAndFeelDefaults().put("ComboBox[Focused].backgroundPainter",
                            new javax.swing.plaf.nimbus.AbstractRegionPainter() {
                        @Override
                        protected AbstractRegionPainter.PaintContext getPaintContext() {
                            return new AbstractRegionPainter.PaintContext(null, null, false);
                        }

                        @Override
                        protected void doPaint(Graphics2D g, JComponent c,
                                int width, int height, Object[] extendedCacheKeys) {
                            g.setColor(Color.RED);
                            g.fill(new Rectangle(0, 0, width, height));
                        }
                    });
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                MyComboBox aCTF = new MyComboBox();
            }
        });
    }
}

如果不使用XxxRenderer，什么都不会发生，那么就可以为可编辑和不可编辑的JComboBox（使用相同的颜色主题）创建好的主题

我会看看Seaglas L

import java.awt.*;
import java.util.Vector;
import javax.swing.*;
import javax.swing.UIManager;

public class MyComboBox {

    private Vector<String> listSomeString = new Vector<String>();
    private JComboBox someComboBox = new JComboBox(listSomeString);
    private JComboBox editableComboBox = new JComboBox(listSomeString);
    private JComboBox non_EditableComboBox = new JComboBox(listSomeString);
    private JFrame frame;

    public MyComboBox() {
        listSomeString.add("-");
        listSomeString.add("Snowboarding");
        listSomeString.add("Rowing");
        listSomeString.add("Knitting");
        listSomeString.add("Speed reading");
        someComboBox.setPrototypeDisplayValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
        someComboBox.setFont(new Font("Serif", Font.BOLD, 16));
        someComboBox.setEditable(true);
        someComboBox.getEditor().getEditorComponent().setBackground(Color.YELLOW);
        ((JTextField) someComboBox.getEditor().getEditorComponent()).setBackground(Color.YELLOW);
        editableComboBox.setPrototypeDisplayValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
        editableComboBox.setFont(new Font("Serif", Font.BOLD, 16));
        editableComboBox.setEditable(true);
        JTextField text = ((JTextField) editableComboBox.getEditor().getEditorComponent());
        text.setBackground(Color.YELLOW);
        non_EditableComboBox.setPrototypeDisplayValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
        non_EditableComboBox.setFont(new Font("Serif", Font.BOLD, 16));
        frame = new JFrame();
        frame.setLayout(new GridLayout(0, 1, 10, 10));
        frame.add(someComboBox);
        frame.add(editableComboBox);
        frame.add(non_EditableComboBox);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocation(100, 100);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.seaglasslookandfeel.SeaGlassLookAndFeel");
        } catch (Exception e) {
            e.printStackTrace();
        }
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                MyComboBox aCTF = new MyComboBox();
            }
        });
    }
}

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共有2个答案

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