是否可以在垂直方向上保存文本水平JProgressbar

Question

JProgressBarJProgressBar.VERTICAL模式旋轉繪製String。

是否可以保存字符串HORIZONTAL？

Answer 1

• 另一種選擇是使用BorderLayout + JLabel
• ，或者如果您使用的是Java 1.7.0，您可以使用一個JLayer

import java.awt.*; 
import java.awt.event.*; 
import java.beans.*; 
import javax.swing.*; 
import javax.swing.event.*; 
import javax.swing.plaf.LayerUI; 

public class ProgressBarLabelTest { 
    private static JProgressBar makeProgressBar1(BoundedRangeModel model) { 
    JProgressBar progressBar = new JProgressBar(model) { 
     private JLabel label = new JLabel("000/100", SwingConstants.CENTER); 
     private ChangeListener changeListener = null; 
     @Override public void updateUI() { 
     removeAll(); 
     if(changeListener!=null) removeChangeListener(changeListener); 
     super.updateUI(); 
     EventQueue.invokeLater(new Runnable() { 
      @Override public void run() { 
      setLayout(new BorderLayout()); 
      changeListener = new ChangeListener() { 
       @Override public void stateChanged(ChangeEvent e) { 
       int iv = (int)(100 * getPercentComplete()); 
       label.setText(String.format("%03d/100", iv)); 
       } 
      }; 
      addChangeListener(changeListener); 
      add(label); 
      label.setBorder(BorderFactory.createEmptyBorder(0,4,0,4)); 
      } 
     }); 
     } 
     @Override public Dimension getPreferredSize() { 
     Dimension d = super.getPreferredSize(); 
     Insets i = label.getInsets(); 
     d.width = label.getPreferredSize().width + i.left + i.right; 
     return d; 
     } 
    }; 
    initProgressBar(progressBar); 
    return progressBar; 
    } 
    private static JComponent makeProgressBar2(BoundedRangeModel model) { 
    final JLabel label = new JLabel("000/100"); 
    label.setBorder(BorderFactory.createEmptyBorder(4,4,4,4)); 
    LayerUI<JProgressBar> layerUI = new LayerUI<JProgressBar>() { 
     private final JPanel rubberStamp = new JPanel(); 
     @Override public void paint(Graphics g, JComponent c) { 
     super.paint(g, c); 
     Dimension d = label.getPreferredSize(); 
     int x = (c.getWidth() - d.width)/2; 
     int y = (c.getHeight() - d.height)/2; 
     JLayer jlayer = (JLayer)c; 
     JProgressBar progress = (JProgressBar)jlayer.getView(); 
     int iv = (int)(100 * progress.getPercentComplete()); 
     label.setText(String.format("%03d/100", iv)); 
     SwingUtilities.paintComponent(
      g, label, rubberStamp, x, y, d.width, d.height); 
     } 
    }; 
    JProgressBar progressBar = new JProgressBar(model) { 
     @Override public Dimension getPreferredSize() { 
     Dimension d = super.getPreferredSize(); 
     Insets i = label.getInsets(); 
     d.width = label.getPreferredSize().width + i.left + i.right; 
     return d; 
     } 
    }; 
    initProgressBar(progressBar); 
    return new JLayer<JProgressBar>(progressBar, layerUI); 
    } 
    public JComponent makeUI() { 
    final BoundedRangeModel m = new DefaultBoundedRangeModel(); 
    JProgressBar progressBar0 = new JProgressBar(m); 
    initProgressBar(progressBar0); 
    progressBar0.setStringPainted(true); 
    JPanel p = new JPanel(); 
    p.add(progressBar0); 
    p.add(makeProgressBar1(m)); 
    p.add(makeProgressBar2(m)); 
    p.add(new JButton(new AbstractAction("+10") { 
     private int i = 0; 
     @Override public void actionPerformed(ActionEvent e) { 
     m.setValue(i = (i>=100) ? 0 : i + 10); 
     } 
    })); 
    return p; 
    } 
    private static void initProgressBar(JProgressBar progressBar) { 
    progressBar.setOrientation(SwingConstants.VERTICAL); 
    progressBar.setStringPainted(false); 
    progressBar.setForeground(Color.GREEN); 
    } 
    public static void main(String[] args) { 
    EventQueue.invokeLater(new Runnable() { 
     @Override public void run() { createAndShowGUI(); } 
    }); 
    } 
    public static void createAndShowGUI() { 
    JFrame f = new JFrame(); 
    f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); 
    f.getContentPane().add(new ProgressBarLabelTest().makeUI()); 
    f.setSize(320, 240); 
    f.setLocationRelativeTo(null); 
    f.setVisible(true); 
    } 
} 

Answer 2

您可以在自定義BasicProgressBarUI覆蓋paintString()。一個相關的例子見here。

Answer 3

這是一個true -hack但如果對我的作品：

我在棧中查找，如果UI詢問方向，同時打印標籤，如果是這樣我返回另一個方向。

 JProgressBar progress = new JProgressBar(){ 
      @Override 
      public int getOrientation() { 
       for(StackTraceElement elem : new Throwable().getStackTrace()) { 
        if(elem.getMethodName().equals("paintText") || (elem.getMethodName().equals("paintString"))) { 
         return JProgressBar.HORIZONTAL; 
        } 
       } 
       return JProgressBar.VERTICAL; 
      } 
     };