HarmonyOS 鸿蒙Next Openharmony投屏工具

上课需要，临时写一个Openharmony投屏工具暂时用一下，实现代码分享如下：

import javax.imageio.ImageIO;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class ImageFrame extends JFrame {
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> BufferedImage originalImage;
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">final</span></span> String imagePath = System.getProperty(<span class="hljs-string"><span class="hljs-string">"user.dir"</span></span>) + File.separator + <span class="hljs-string"><span class="hljs-string">"scr.jpeg"</span></span>; <span class="hljs-comment"><span class="hljs-comment">// 图片文件的路径</span></span>
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">final</span></span> <span class="hljs-keyword"><span class="hljs-keyword">double</span></span> aspectRatio = <span class="hljs-number"><span class="hljs-number">720.0</span></span> / <span class="hljs-number"><span class="hljs-number">1280.0</span></span>; <span class="hljs-comment"><span class="hljs-comment">// 定义比例</span></span>
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> ImagePanel imagePanel;
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">long</span></span> pressTime; <span class="hljs-comment"><span class="hljs-comment">// 用于记录鼠标按下的时间</span></span>
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> initWidth = <span class="hljs-number"><span class="hljs-number">517</span></span>;  <span class="hljs-comment"><span class="hljs-comment">//初始窗口宽</span></span>
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> initHeight = <span class="hljs-number"><span class="hljs-number">908</span></span>;   <span class="hljs-comment"><span class="hljs-comment">//初始窗口高</span></span>

<span class="hljs-keyword"><span class="hljs-keyword">public</span></span> <span class="hljs-title"><span class="hljs-title">ImageFrame</span></span>() {
    setTitle(<span class="hljs-string"><span class="hljs-string">"OHScrcpy(by zhonghongfa)"</span></span>);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    <span class="hljs-comment"><span class="hljs-comment">// setLocationRelativeTo(null);</span></span>
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> screenWidth = screenSize.width;
    <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> screenHeight = screenSize.height;
    <span class="hljs-comment"><span class="hljs-comment">// 计算窗体在屏幕右侧的新位置</span></span>
    <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> x = screenWidth - initWidth - <span class="hljs-number"><span class="hljs-number">50</span></span>;
    <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> y = <span class="hljs-number"><span class="hljs-number">50</span></span>; <span class="hljs-comment"><span class="hljs-comment">// 如果希望窗体垂直居中</span></span>
    <span class="hljs-comment"><span class="hljs-comment">// 设置窗体的新位置</span></span>
    setLocation(x, y);

    loadImage();
    imagePanel = <span class="hljs-keyword"><span class="hljs-keyword">new</span></span> ImagePanel();
    add(imagePanel);
    setIconImage();

    addComponentListener(<span class="hljs-keyword"><span class="hljs-keyword">new</span></span> ComponentAdapter() {
        <span class="hljs-keyword"><span class="hljs-keyword">public</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">componentResized</span></span>(ComponentEvent e) {
            maintainAspectRatio();
        }
    });

    imagePanel.addMouseListener(<span class="hljs-keyword"><span class="hljs-keyword">new</span></span> MouseAdapter() {
        <span class="hljs-annotation"><span class="hljs-annotation">@Override</span></span>
        <span class="hljs-keyword"><span class="hljs-keyword">public</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">mousePressed</span></span>(MouseEvent e) {
            pressTime = System.currentTimeMillis(); <span class="hljs-comment"><span class="hljs-comment">// 记录鼠标按下的时间</span></span>
        }

        <span class="hljs-annotation"><span class="hljs-annotation">@Override</span></span>
        <span class="hljs-keyword"><span class="hljs-keyword">public</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">mouseReleased</span></span>(MouseEvent e) {
            <span class="hljs-keyword"><span class="hljs-keyword">long</span></span> releaseTime = System.currentTimeMillis(); <span class="hljs-comment"><span class="hljs-comment">// 记录鼠标释放的时间</span></span>
            <span class="hljs-keyword"><span class="hljs-keyword">double</span></span> scaleX = (<span class="hljs-keyword"><span class="hljs-keyword">double</span></span>) originalImage.getWidth() / imagePanel.getWidth();
            <span class="hljs-keyword"><span class="hljs-keyword">double</span></span> scaleY = (<span class="hljs-keyword"><span class="hljs-keyword">double</span></span>) originalImage.getHeight() / imagePanel.getHeight();
            <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> realX = (<span class="hljs-keyword"><span class="hljs-keyword">int</span></span>) (e.getX() * scaleX);
            <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> realY = (<span class="hljs-keyword"><span class="hljs-keyword">int</span></span>) (e.getY() * scaleY);
            <span class="hljs-keyword"><span class="hljs-keyword">if</span></span> (releaseTime - pressTime &gt; <span class="hljs-number"><span class="hljs-number">500</span></span>) { <span class="hljs-comment"><span class="hljs-comment">// 如果按下时间超过500毫秒，则认为是长按</span></span>
                System.out.println(<span class="hljs-string"><span class="hljs-string">"Real Long pressed coordinates: ("</span></span> + realX + <span class="hljs-string"><span class="hljs-string">", "</span></span> + realY + <span class="hljs-string"><span class="hljs-string">")"</span></span>);
                executeCommand(String.format(<span class="hljs-string"><span class="hljs-string">"hdc shell uitest uiInput longClick %d %d"</span></span>, realX, realY));
            }<span class="hljs-keyword"><span class="hljs-keyword">else</span></span>{
                System.out.println(<span class="hljs-string"><span class="hljs-string">"Real clicked coordinates: ("</span></span> + realX + <span class="hljs-string"><span class="hljs-string">", "</span></span> + realY + <span class="hljs-string"><span class="hljs-string">")"</span></span>);
                <span class="hljs-comment"><span class="hljs-comment">// 构建并执行命令</span></span>
                executeCommand(String.format(<span class="hljs-string"><span class="hljs-string">"hdc shell uitest uiInput click %d %d"</span></span>, realX, realY));
            }
        }
    });

    setSize(initWidth, initHeight); <span class="hljs-comment"><span class="hljs-comment">// 设置初始窗口大小</span></span>
    <span class="hljs-keyword"><span class="hljs-keyword">new</span></span> Timer(<span class="hljs-number"><span class="hljs-number">100</span></span>, e -&gt; updateImageAndReload()).start();
}

<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">setIconImage</span></span>() {
    <span class="hljs-keyword"><span class="hljs-keyword">try</span></span> {
        BufferedImage iconImage = ImageIO.read(getClass().getResource(<span class="hljs-string"><span class="hljs-string">"/OHScrcpy.png"</span></span>)); <span class="hljs-comment"><span class="hljs-comment">// 注意路径前的斜杠</span></span>
        setIconImage(iconImage);
    } <span class="hljs-keyword"><span class="hljs-keyword">catch</span></span> (IOException e) {
        e.printStackTrace();
    }
}

<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">loadImage</span></span>() {
    <span class="hljs-keyword"><span class="hljs-keyword">try</span></span> {
        File imageFile = <span class="hljs-keyword"><span class="hljs-keyword">new</span></span> File(imagePath);
        <span class="hljs-keyword"><span class="hljs-keyword">if</span></span> (imageFile.exists()) {
            originalImage = ImageIO.read(imageFile);
        }
    } <span class="hljs-keyword"><span class="hljs-keyword">catch</span></span> (IOException ex) {
        ex.printStackTrace();
    }
}

<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">executeCommand</span></span>(String command) {
    <span class="hljs-keyword"><span class="hljs-keyword">try</span></span> {
        System.out.println(<span class="hljs-string"><span class="hljs-string">"Executing command: "</span></span> + command);
        Process process = Runtime.getRuntime().exec(<span class="hljs-string"><span class="hljs-string">"cmd.exe /c "</span></span> + command);
        process.waitFor();
    } <span class="hljs-keyword"><span class="hljs-keyword">catch</span></span> (IOException | InterruptedException e) {
        e.printStackTrace();
    }
}

<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">updateImage</span></span>() {
    <span class="hljs-keyword"><span class="hljs-keyword">try</span></span> {
        <span class="hljs-comment"><span class="hljs-comment">// 执行外部命令更新图片</span></span>
        String[] cmd = {
                <span class="hljs-string"><span class="hljs-string">"cmd.exe"</span></span>,
                <span class="hljs-string"><span class="hljs-string">"/c"</span></span>,
                <span class="hljs-string"><span class="hljs-string">"hdc shell rm -rf /data/local/tmp/scr.jpeg &amp; hdc shell snapshot_display -f /data/local/tmp/scr.jpeg &amp; hdc file recv  /data/local/tmp/scr.jpeg"</span></span>
        };
        Process p = Runtime.getRuntime().exec(cmd);
        p.waitFor(); <span class="hljs-comment"><span class="hljs-comment">// 等待命令执行完成</span></span>

    } <span class="hljs-keyword"><span class="hljs-keyword">catch</span></span> (IOException | InterruptedException ex) {
        ex.printStackTrace();
    }
}

<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">updateImageAndReload</span></span>() {
    updateImage();
    loadImage();
    imagePanel.repaint();
}

<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">maintainAspectRatio</span></span>() {
    Rectangle bounds = <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.getBounds();
    <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> width = bounds.width;
    <span class="hljs-keyword"><span class="hljs-keyword">int</span></span> height = (<span class="hljs-keyword"><span class="hljs-keyword">int</span></span>) (width / aspectRatio);
    <span class="hljs-keyword"><span class="hljs-keyword">if</span></span> (height != bounds.height) {
        <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.setSize(width, height);
    }
}

<span class="hljs-comment"><span class="hljs-comment">// JPanel 的子类用于绘制图像</span></span>
<span class="hljs-keyword"><span class="hljs-keyword">private</span></span> <span class="hljs-class"><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword">class</span></span></span><span class="hljs-class"> </span><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">ImagePanel</span></span></span><span class="hljs-class"> </span><span class="hljs-keyword"><span class="hljs-class"><span class="hljs-keyword">extends</span></span></span><span class="hljs-class"> </span><span class="hljs-title"><span class="hljs-class"><span class="hljs-title">JPanel</span></span></span><span class="hljs-class"> {</span></span>
    <span class="hljs-annotation"><span class="hljs-annotation">@Override</span></span>
    <span class="hljs-keyword"><span class="hljs-keyword">protected</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">paintComponent</span></span>(Graphics g) {
        <span class="hljs-keyword"><span class="hljs-keyword">super</span></span>.paintComponent(g);
        <span class="hljs-keyword"><span class="hljs-keyword">if</span></span> (originalImage != <span class="hljs-keyword"><span class="hljs-keyword">null</span></span>) {
            g.drawImage(originalImage, <span class="hljs-number"><span class="hljs-number">0</span></span>, <span class="hljs-number"><span class="hljs-number">0</span></span>, getWidth(), getHeight(), <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>); <span class="hljs-comment"><span class="hljs-comment">// 动态调整图片大小</span></span>
        }
    }
}

<span class="hljs-keyword"><span class="hljs-keyword">public</span></span> <span class="hljs-keyword"><span class="hljs-keyword">static</span></span> <span class="hljs-keyword"><span class="hljs-keyword">void</span></span> <span class="hljs-title"><span class="hljs-title">main</span></span>(String[] args) {
    SwingUtilities.invokeLater(() -&gt; <span class="hljs-keyword"><span class="hljs-keyword">new</span></span> ImageFrame().setVisible(<span class="hljs-keyword"><span class="hljs-keyword">true</span></span>));
}
}
<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

运行效果如下：