JProgressBar
模式下的 JProgressBar.VERTICAL
旋转绘制的 String
。
是否可以保存字符串 HORIZONTAL
?
最佳答案
BorderLayout
+ JLabel
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);
}
}
关于java - 是否可以在垂直 JProgressbar 中水平保存文本,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/16934009/