用Java代码编译1)从已有的图象文件列表中选择某一个,即可显示该图象,并可做旋转等变换。 2)在画布区域上可以进行各种规则图形的绘制(如:线段、矩形、多边形、圆等),还可通过鼠标的拖动自由绘图。 3)可以连续播放所选文件夹下的所有图象。
时间: 2024-03-05 08:51:28 浏览: 13
可以使用Java的图形界面库Swing来实现你提到的这些功能。下面是一些伪代码,可以帮助你开始编程:
1. 显示图像:
```java
import javax.swing.*;
import java.awt.*;
public class ImageViewer extends JFrame {
private ImageIcon imageIcon;
private JLabel label;
public ImageViewer() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 选择图像文件
JFileChooser fileChooser = new JFileChooser();
int returnValue = fileChooser.showOpenDialog(null);
if (returnValue == JFileChooser.APPROVE_OPTION) {
String filePath = fileChooser.getSelectedFile().getPath();
imageIcon = new ImageIcon(filePath);
}
// 显示图像
label = new JLabel();
label.setIcon(imageIcon);
add(label);
pack();
setVisible(true);
}
public static void main(String[] args) {
new ImageViewer();
}
}
```
2. 绘制图形:
```java
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class DrawingPanel extends JPanel {
private Point startPoint;
private Point endPoint;
public DrawingPanel() {
setBackground(Color.WHITE);
addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
startPoint = e.getPoint();
endPoint = e.getPoint();
}
@Override
public void mouseReleased(MouseEvent e) {
endPoint = e.getPoint();
repaint();
}
});
addMouseMotionListener(new MouseAdapter() {
@Override
public void mouseDragged(MouseEvent e) {
endPoint = e.getPoint();
repaint();
}
});
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
// 绘制线段
g.setColor(Color.BLACK);
g.drawLine(startPoint.x, startPoint.y, endPoint.x, endPoint.y);
// 绘制矩形
g.setColor(Color.RED);
g.drawRect(startPoint.x, startPoint.y, endPoint.x - startPoint.x, endPoint.y - startPoint.y);
// 绘制椭圆
g.setColor(Color.BLUE);
g.drawOval(startPoint.x, startPoint.y, endPoint.x - startPoint.x, endPoint.y - startPoint.y);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(400, 400);
frame.add(new DrawingPanel());
frame.setVisible(true);
}
}
```
3. 连续播放图像:
```java
import javax.swing.*;
import java.io.File;
public class ImagePlayer extends JFrame {
private JLabel label;
public ImagePlayer() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 选择图像文件夹
JFileChooser fileChooser = new JFileChooser();
fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int returnValue = fileChooser.showOpenDialog(null);
if (returnValue == JFileChooser.APPROVE_OPTION) {
File folder = fileChooser.getSelectedFile();
// 获取图像文件列表
File[] files = folder.listFiles((dir, name) -> name.endsWith(".jpg") || name.endsWith(".png"));
// 创建标签
label = new JLabel();
add(label);
// 播放图像
for (File file : files) {
ImageIcon imageIcon = new ImageIcon(file.getPath());
label.setIcon(imageIcon);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
pack();
setVisible(true);
}
public static void main(String[] args) {
new ImagePlayer();
}
}
```
以上是一个简单的实现,你可以根据自己的需要进行修改和扩展。