使用java具有价值的可移动条 [英] Movable bars with value using java

问题描述

我想创建一个带有值的条形图.如果我移动圆圈，那么该字段中的值应该会改变.我怎样才能做到这一点?这是屏幕截图.我怎样才能做到这一点?

I want to create a bar with a value. If i move the circle, then the value in the field should change. How can i do this? Here is the screen shot. How can i achieve this?

类似的东西也可以.请帮我解决一下这个.提前谢谢你:)

Something similar to this is also ok. Please help me with this. Thank you in advance :)

推荐答案

SpinSlider 可能是一个有用的例子.

SpinSlider may be a useful example.

附录:这是一个使用 JSpinner.NumberEditor 的合适格式字符串的示例.

Addendum: Here's an example using a suitable format string for JSpinner.NumberEditor.

附录:您可以通过覆盖 paintTrack() 来更改滑块的颜色，如图 此处.

Addendum: You can change the color of the slider by overriding paintTrack(), as shown here.

import java.awt.EventQueue;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

/** @see https://stackoverflow.com/questions/6067898 */
public class SpinSlider extends JPanel {

    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                JFrame f = new JFrame("SpinSlider!");
                f.add(new SpinSlider());
                f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                f.pack();
                f.setVisible(true);
            }
        });
    }

    public SpinSlider() {
        this.setLayout(new FlowLayout());
        final JSpinner spinner = new JSpinner();
        final JSlider slider = new JSlider();
        slider.addChangeListener(new ChangeListener() {
            @Override
            public void stateChanged(ChangeEvent e) {
                JSlider s = (JSlider) e.getSource();
                spinner.setValue(s.getValue());
            }
        });
        this.add(slider);
        spinner.setModel(new SpinnerNumberModel(50, 0, 100, 1));
        spinner.setEditor(new JSpinner.NumberEditor(spinner, "0'%'"));
        spinner.addChangeListener(new ChangeListener() {
            @Override
            public void stateChanged(ChangeEvent e) {
                JSpinner s = (JSpinner) e.getSource();
                slider.setValue((Integer) s.getValue());
            }
        });
        this.add(spinner);
    }
}

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