- import java.awt.*;
- import java.awt.event.ActionEvent;
- import java.awt.event.ActionListener;
- import java.awt.image.CropImageFilter;
- import java.awt.image.FilteredImageSource;
- import java.awt.image.ImageFilter;
- import java.awt.image.ImageProducer;
- import java.io.File;
- import javax.swing.*;
- public class vicePic implements ActionListener {
- JLabel imgLable;
- JFrame mainJframe;
- Container con;
- JTextField fileFiled;
- JButton openBtn,cutBtn;
- JPanel pane;
- JScrollPane spanel;
- ImageIcon img;
- public vicePic(){
- mainJframe=new JFrame("图形显示比例");
- con=mainJframe.getContentPane();
- pane=new JPanel();
- pane.setLayout(new FlowLayout());
- openBtn=new JButton("打开文件");
- openBtn.addActionListener(this);
- cutBtn=new JButton("剪切图片");
- cutBtn.addActionListener(this);
- fileFiled=new JTextField();
- fileFiled.setColumns(20);
- pane.add(fileFiled);
- pane.add(openBtn);
- pane.add(cutBtn);
- imgLable =new JLabel();
- spanel=new JScrollPane(imgLable);
- con.add(pane,BorderLayout.NORTH);
- con.add(spanel,BorderLayout.CENTER);
- mainJframe.setSize(800, 800);
- mainJframe.setVisible(true);
- mainJframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
- }
- @Override
- public void actionPerformed(ActionEvent e) {
- String cmd=e.getActionCommand();
- ImageFilter cropFilter;
- Image croppedImage;
- ImageProducer produer;
- if(cmd.equals("打开文件")){
- try{
- JFileChooser chooser=new JFileChooser();
- if(chooser.showOpenDialog(mainJframe)==JFileChooser.APPROVE_OPTION){
- File tempfile=chooser.getSelectedFile();
- fileFiled.setText(tempfile.toString());
- img=new ImageIcon(fileFiled.getText());
- imgLable.setIcon(img);
- }http://www.huiyi8.com/jiaoben/
- }catch(Exception el){
- JOptionPane.showMessageDialog(mainJframe, "图品无法显示");
- }
- }
- if(cmd.equals("剪切图片")){
- cropFilter=new CropImageFilter(100, 100, 200, 200);
- produer=new FilteredImageSource(img.getImage().getSource(), cropFilter);
- croppedImage=Toolkit.getDefaultToolkit().createImage(produer);
- imgLable.setIcon(new ImageIcon(croppedImage));
- }
- }
- public static void main(String[] args){
- new vicePic();
- }
- }
来源: http://www.phpxs.com/code/1002292/