Java Swing程序开发—右下角显示进度条

- 日理万妓 2022-08-07 14:44 186阅读 0赞

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）：

![Center][]

[Center]: /images/20220805/a13ee9c2dadc4921b84b2e569397e6d8.png