Java Swing程序开发—右下角显示进度条

虽然自己不喜欢Java的GUI程序，但是工作原因，听从上级安排。

转入正题：这篇文章实现在桌面右下角显示一个进度条，显示当前程序运行的进度。而且鼠标能够拖动进度条。有需要的童鞋，可以直接拷贝代码过去使用！

Java参考代码：

import java.awt.Dimension;
import java.awt.Insets;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import javax.swing.JDialog;
import javax.swing.JProgressBar;
import javax.swing.SwingConstants;

public class ProgressDialog extends JDialog implements MouseListener,
    MouseMotionListener {
  private static final long serialVersionUID = 1L;

  private JProgressBar progressBar;

  private int height = 20;//进度条高度
  private int width = 260;//进度条宽度

  private int mouseX;//鼠标X坐标
  private int mouseY;//鼠标Y坐标

  private int currentX;//进度条当前X坐标
  private int currentY;//进度条当前Y坐标

  private boolean isMove = false;

  public ProgressDialog(int number) {
    initialize();
    initProgressBar(number);
    this.add(progressBar);
  }

  /**
   * 初始化窗体
   */
  private void initialize() {
    Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();//屏幕尺寸
    Insets screenInsets = Toolkit.getDefaultToolkit().getScreenInsets(
        this.getGraphicsConfiguration());
    currentX = (int) (dimension.getWidth() - width - 3);
    currentY = (int) (dimension.getHeight() - screenInsets.bottom - height - 3);
    this.setAlwaysOnTop(true);
    this.setSize(width, height);
    this.setLocation(currentX, currentY);
    this.setUndecorated(true);
  }
  
  /**
   * @param number进度条最大值
   * 初始化进度条
   */
  private void initProgressBar(int number) {
    progressBar = new JProgressBar(SwingConstants.HORIZONTAL);
    progressBar.setMinimum(0);
    progressBar.setMaximum(number);
    progressBar.setStringPainted(true);//显示进度条数值
    progressBar.addMouseMotionListener(this);
    progressBar.addMouseListener(this);
  }

  public JProgressBar getProgressBar() {
    return progressBar;
  }

  @Override
  public void mouseDragged(MouseEvent e) {
    if (isMove) {
      //鼠标拖动处理
      int dx = e.getXOnScreen() - mouseX;
      int dy = e.getYOnScreen() - mouseY;
      this.setLocation(currentX + dx, currentY + dy);
    }
  }

  @Override
  public void mouseMoved(MouseEvent e) {
    // TODO Auto-generated method stub

  }

  @Override
  public void mouseClicked(MouseEvent e) {
    // TODO Auto-generated method stub

  }

  @Override
  public void mousePressed(MouseEvent e) {
    isMove = true;
    //记住拖动起始的坐标
    mouseX = e.getXOnScreen();
    mouseY = e.getYOnScreen();
  }

  @Override
  public void mouseReleased(MouseEvent e) {
    // TODO Auto-generated method stub

  }

  @Override
  public void mouseEntered(MouseEvent e) {
    // TODO Auto-generated method stub

  }

  @Override
  public void mouseExited(MouseEvent e) {
    // TODO Auto-generated method stub

  }
  
  public static void main(String[] args) {
    int max = 20;
    ProgressDialog dlgMain = new ProgressDialog(max);
    dlgMain.setVisible(true);
    JProgressBar progressBar = dlgMain.getProgressBar();
    for (int i = 0; i < max; i++) {
      progressBar.setValue(i + 1);
      try {
        Thread.sleep(1000);
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }
    dlgMain.dispose();
  }
}

效果图（注意看右下角）：