Win 上带有 JMenuItem setHorizo​​ntalTextPosition 的双图标 [英] Double icons with JMenuItem setHorizontalTextPosition on Win

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本文介绍了Win 上带有 JMenuItem setHorizo​​ntalTextPosition 的双图标的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

在 Windows 外观和感觉中使用 JMenuItem setHorizo​​ntalTextPosition(SwingConstants.LEFT) 时呈现两个图标.它适用于默认的 Java 外观.

我刚刚提交了一份 Java 错误报告，在这里发布给遇到同样问题的其他人.

有人有其他解决方法建议吗?

import java.awt.Color;导入 java.awt.Dimension;导入 java.awt.Graphics;导入 java.awt.image.BufferedImage;导入 javax.swing.ImageIcon;导入 javax.swing.JFrame;导入 javax.swing.JMenu;导入 javax.swing.JMenuBar;导入 javax.swing.JMenuItem;导入 javax.swing.SwingConstants;导入 javax.swing.UIManager;公共类 WinMenuItemIcon {公共静态无效主(字符串 [] args){//注意:错误发生在 Windows L&FString name = UIManager.getSystemLookAndFeelClassName();尝试 {UIManager.setLookAndFeel( 名称 );} 捕获(异常 e){e.printStackTrace();}JFrame frame = new JFrame();frame.setTitle(测试");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JMenuBar menuBar = new JMenuBar();JMenu menu = new JMenu("Menu");ImageIcon 图标 = createIcon();JMenuItem menuItem = new JMenuItem("Command", icon);menuItem.setHorizo​​ntalTextPosition(SwingConstants.LEFT);menu.add(menuItem);menuBar.add(菜单);frame.setJMenuBar(menuBar);frame.setPreferredSize(new Dimension(500, 500));框架.pack();frame.setVisible(true);}受保护的静态 ImageIcon createIcon() {BufferedImage bi = new BufferedImage(25,25,BufferedImage.TYPE_INT_ARGB);图形 g = bi.createGraphics();g.setColor(Color.RED);g.fillOval(0,0, 25, 25);返回新的 ImageIcon(bi);}}

解决方案

  • 我的环境:Windows 10 64bit + JDK 1.8.0_72
  • 我不确定这是否是一个错误... 现在这个错误似乎已修复:

    import java.awt.*;导入 java.awt.image.BufferedImage;导入 javax.swing.*;公共类 WinMenuItemIconTest {私有静态 JMenuBar makeManuBar() {JMenuItem menuItem0 = new JMenuItem("Command", createIcon());JMenuItem menuItem1 = new JMenuItem("LEFT bug?", createIcon());menuItem1.setHorizo​​ntalTextPosition(SwingConstants.LEFT);//menuItem1.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);JMenuItem menuItem2 = new JMenuItem("CENTER bug?", createIcon());menuItem2.setHorizo​​ntalTextPosition(SwingConstants.CENTER);JMenuItem menuItem3 = new JMenuItem("RIGHT_TO_LEFT", createIcon());menuItem3.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);JMenu menu = new JMenu("Menu");menu.add(menuItem0);menu.add(menuItem1);menu.add(menuItem2);menu.add(menuItem3);JMenuBar menuBar = new JMenuBar();menuBar.add(菜单);返回菜单栏；}公共静态无效主(字符串 [] args){EventQueue.invokeLater(() -> {//注意:错误发生在 Windows L&FString name = UIManager.getSystemLookAndFeelClassName();尝试 {UIManager.setLookAndFeel(name);} 捕获(异常 e){e.printStackTrace();}JFrame frame = new JFrame("Test");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setJMenuBar(makeManuBar());frame.setSize(320, 240);frame.setLocationRelativeTo(null);frame.setVisible(true);});}受保护的静态 ImageIcon createIcon() {BufferedImage bi = new BufferedImage(25, 25, BufferedImage.TYPE_INT_ARGB);图形 g = bi.createGraphics();g.setColor(Color.RED);g.fillOval(0, 0, 25, 25);g.dispose();返回新的 ImageIcon(bi);}}

    Two icons are rendered when using JMenuItem setHorizontalTextPosition(SwingConstants.LEFT) with Windows Look and Feel. It works fine with the default Java Look and Feel.

    I just filed a Java bug report, posting here for anyone else having the same problem.

    Does anyone have another workaround to suggest?

    import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.SwingConstants;
import javax.swing.UIManager;


public class WinMenuItemIcon {

public static void main(String[] args) {
    
    //NOTE: Bug happens with Windows L&F
    String name = UIManager.getSystemLookAndFeelClassName();
    try {
        UIManager.setLookAndFeel( name );
    } catch (Exception e) {
        e.printStackTrace();
    }

    JFrame frame = new JFrame();
    frame.setTitle("Test");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    JMenuBar menuBar = new JMenuBar();
    JMenu menu = new JMenu("Menu");
    
    ImageIcon icon = createIcon();
    
    JMenuItem menuItem = new JMenuItem("Command", icon);
    menuItem.setHorizontalTextPosition(SwingConstants.LEFT);
    menu.add(menuItem);
    menuBar.add(menu);

    frame.setJMenuBar(menuBar);
    frame.setPreferredSize(new Dimension(500, 500));
    frame.pack();
    frame.setVisible(true);
}

protected static ImageIcon createIcon() {
    BufferedImage bi = new BufferedImage(25,25,BufferedImage.TYPE_INT_ARGB);
    Graphics g = bi.createGraphics();
    g.setColor(Color.RED);
    g.fillOval(0,0, 25, 25);
    return new ImageIcon(bi);
}

}

    解决方案 

    import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;

public class WinMenuItemIconTest {
  private static JMenuBar makeManuBar() {
    JMenuItem menuItem0 = new JMenuItem("Command", createIcon());

    JMenuItem menuItem1 = new JMenuItem("LEFT bug?", createIcon());
    menuItem1.setHorizontalTextPosition(SwingConstants.LEFT);
    //menuItem1.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);

    JMenuItem menuItem2 = new JMenuItem("CENTER bug?", createIcon());
    menuItem2.setHorizontalTextPosition(SwingConstants.CENTER);

    JMenuItem menuItem3 = new JMenuItem("RIGHT_TO_LEFT", createIcon());
    menuItem3.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);

    JMenu menu = new JMenu("Menu");
    menu.add(menuItem0);
    menu.add(menuItem1);
    menu.add(menuItem2);
    menu.add(menuItem3);

    JMenuBar menuBar = new JMenuBar();
    menuBar.add(menu);
    return menuBar;
  }
  public static void main(String[] args) {
    EventQueue.invokeLater(() -> {
      //NOTE: Bug happens with Windows L&F
      String name = UIManager.getSystemLookAndFeelClassName();
      try {
        UIManager.setLookAndFeel(name);
      } catch (Exception e) {
        e.printStackTrace();
      }
      JFrame frame = new JFrame("Test");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setJMenuBar(makeManuBar());
      frame.setSize(320, 240);
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
    });
  }
  protected static ImageIcon createIcon() {
    BufferedImage bi = new BufferedImage(25, 25, BufferedImage.TYPE_INT_ARGB);
    Graphics g = bi.createGraphics();
    g.setColor(Color.RED);
    g.fillOval(0, 0, 25, 25);
    g.dispose();
    return new ImageIcon(bi);
  }
}

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