风琴折叠图片效果网站,南昌seo推广方式,网页制作表格怎么做,推广普通话ppt以下是一个简单的图片浏览器示例代码#xff0c;它包含了图片放大缩小、拖拽、上一张/下一张查看等功能。你可以根据它进行扩展#xff0c;提高用户体验。
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.e…以下是一个简单的图片浏览器示例代码它包含了图片放大缩小、拖拽、上一张/下一张查看等功能。你可以根据它进行扩展提高用户体验。
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;import javax.imageio.ImageIO;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSlider;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;public class ImageViewer extends JFrame {private static final long serialVersionUID 1L;private JLabel imageLabel;private JScrollPane scrollPane;private BufferedImage image;private Dimension imageSize;private JPanel controlPanel;private JSlider zoomSlider;private JButton previousButton;private JButton nextButton;private int currentImageIndex 0;private String[] imagePaths {image1.jpg, image2.jpg, image3.jpg};private int zoomLevel 100; // Default zoom levelpublic ImageViewer() {setTitle(Image Viewer);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setPreferredSize(new Dimension(800, 600));setLayout(new BorderLayout());// Create image label and scroll paneimageLabel new JLabel();imageLabel.setHorizontalAlignment(SwingConstants.CENTER);scrollPane new JScrollPane(imageLabel);add(scrollPane, BorderLayout.CENTER);// Create control panelcontrolPanel new JPanel();controlPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));add(controlPanel, BorderLayout.SOUTH);// Create zoom sliderzoomSlider new JSlider(SwingConstants.HORIZONTAL, 50, 200, zoomLevel);zoomSlider.setMajorTickSpacing(50);zoomSlider.setMinorTickSpacing(10);zoomSlider.setPaintTicks(true);zoomSlider.setPaintLabels(true);zoomSlider.addChangeListener(new ChangeListener() {public void stateChanged(ChangeEvent e) {zoomLevel zoomSlider.getValue();updateImage();}});controlPanel.add(zoomSlider);// Create previous buttonpreviousButton new JButton(Previous);previousButton.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {if (currentImageIndex 0) {currentImageIndex--;loadImage();}}});controlPanel.add(previousButton);// Create next buttonnextButton new JButton(Next);nextButton.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {if (currentImageIndex imagePaths.length - 1) {currentImageIndex;loadImage();}}});controlPanel.add(nextButton);// Load the first imageloadImage();// Add mouse listeners to enable draggingimageLabel.addMouseListener(new MouseAdapter() {public void mousePressed(MouseEvent e) {imageLabel.setCursor(new java.awt.Cursor(java.awt.Cursor.MOVE_CURSOR));}public void mouseReleased(MouseEvent e) {imageLabel.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));}});imageLabel.addMouseMotionListener(new MouseMotionAdapter() {public void mouseDragged(MouseEvent e) {int dx e.getX() - (imageSize.width - scrollPane.getViewport().getWidth()) / 2;int dy e.getY() - (imageSize.height - scrollPane.getViewport().getHeight()) / 2;int newHValue scrollPane.getHorizontalScrollBar().getValue() - dx;int newVValue scrollPane.getVerticalScrollBar().getValue() - dy;if (newHValue 0)newHValue 0;if (newVValue 0)newVValue 0;if (newHValue scrollPane.getViewport().getWidth() imageSize.width)newHValue imageSize.width - scrollPane.getViewport().getWidth();if (newVValue scrollPane.getViewport().getHeight() imageSize.height)newVValue imageSize.height - scrollPane.getViewport().getHeight();scrollPane.getHorizontalScrollBar().setValue(newHValue);scrollPane.getVerticalScrollBar().setValue(newVValue);}});pack();setLocationRelativeTo(null);setVisible(true);}private void loadImage() {try {image ImageIO.read(new File(imagePaths[currentImageIndex]));imageSize new Dimension(image.getWidth(), image.getHeight());updateImage();} catch (IOException e) {JOptionPane.showMessageDialog(this, Error loading image: e.getMessage(), Error, JOptionPane.ERROR_MESSAGE);}}private void updateImage() {int newWidth (int) (imageSize.width * zoomLevel / 100.0);int newHeight (int) (imageSize.height * zoomLevel / 100.0);BufferedImage scaledImage new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);scaledImage.getGraphics().drawImage(image, 0, 0, newWidth, newHeight, null);imageLabel.setIcon(new ImageIcon(scaledImage));}public static void main(String[] args) {try {UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());} catch (Exception e) {// Ignore}new ImageViewer();}}运行效果如下
