Java 窗口 小马图像窗口

写在前面：

　　eclipse接着爽到

　　全是借鉴的，东改西改，而且记不住原网址了

　　两个月前写的，忘了思路，嗯，It just works

　　运行效果：

图像随便选（放到*jar所在目录*\pictures\）

能选择永远显示在前

窗口能拖动

鼠标滚轮放大缩小

可以隐藏UI

Java代码如下：

package ponyimg;

import java.awt.*;
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.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import java.io.*; 
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class PonyIMG extends JFrame
{
    static int minx=192,miny=108;
    static boolean ishide=false;
    static int pframexOri,pframeyOri,pframex,pframey,ponyresult;
    static int ori_pict_x,ori_pict_y,pict_x,pict_y,ponyscale=20;
    static String ponySname;
    static ImageIcon ponyimgtmp;
    
    public static void main(String[] args) throws Exception
    {
        JFrame ponyFrame=new JFrame("PonyIMG");
        File directory = new File("");
        ponyFrame.setIconImage(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\icons\32.png"));
        ImageIcon ponydefaultimg=new ImageIcon(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\pictures\default.png"));
        ori_pict_x=ponydefaultimg.getIconWidth();
        ori_pict_y=ponydefaultimg.getIconHeight();
        JButton ponyb_front = new JButton("");
        JButton ponyb_exit = new JButton("");
        JButton ponyb_open = new JButton("");
        JButton ponyb_hide = new JButton("");
        ImageIcon ponyb_fronti = new ImageIcon(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\icons\front.png"));
        ImageIcon ponyb_nfronti = new ImageIcon(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\icons\nfront.png"));
        ImageIcon ponyb_exiti = new ImageIcon(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\icons\exit.png"));
        ImageIcon ponyb_openi = new ImageIcon(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\icons\open.png"));
        ImageIcon ponyb_hidei = new ImageIcon(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\icons\hide.png"));
        ImageIcon ponyb_uhidei = new ImageIcon(Toolkit.getDefaultToolkit().getImage(directory.getCanonicalPath()+"\icons\uhide.png"));
        JFileChooser ponychooser = new JFileChooser(directory.getCanonicalPath()+"\pictures");
        ponychooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        ponychooser.setDialogTitle("Get an image...");
        
        /*Whole*/
        ponyFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        ponyFrame.setLayout(null);
        ponyFrame.setResizable(false);
        ponyFrame.setLocationRelativeTo(null);
        ponyFrame.setSize(ponydefaultimg.getIconWidth(),ponydefaultimg.getIconHeight());
        ponyFrame.setUndecorated(true);
        ponyFrame.setAlwaysOnTop(false);
        ponyFrame.setBackground(new Color(0,0,0,0));
        
        /*BUTTON_FRONT*/
        ponyb_front.setIcon(ponyb_nfronti);
        ponyb_front.setSize(27, 27);
        ponyb_front.setLocation(ponydefaultimg.getIconWidth()-64, 5);
        ponyb_front.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e)
            {
                if(ponyFrame.isAlwaysOnTop()==true)
                {
                    ponyFrame.setAlwaysOnTop(false);
                    ponyb_front.setIcon(ponyb_nfronti);
                }
                else
                {
                    ponyFrame.setAlwaysOnTop(true);
                    ponyb_front.setIcon(ponyb_fronti);
                }
            }
        });
        ponyFrame.add(ponyb_front);
        
        /*BUTTON_EXIT*/
        ponyb_exit.setIcon(ponyb_exiti);
        ponyb_exit.setSize(27, 27);
        ponyb_exit.setLocation(ponydefaultimg.getIconWidth()-32, 5);
        ponyb_exit.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e)
            {
                System.exit(0);
            }
        });
        ponyFrame.add(ponyb_exit);
        
        /*BUTTON_OPEN*/
        ponyb_open.setIcon(ponyb_openi);
        ponyb_open.setSize(27, 27);
        ponyb_open.setLocation(5, ponydefaultimg.getIconHeight()-32);
        ponyFrame.add(ponyb_open);
        
        /*BUTTON_HIDE*/
        ponyb_hide.setIcon(ponyb_uhidei);
        ponyb_hide.setSize(27, 27);
        ponyb_hide.setLocation(5, 5);
        ponyb_hide.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e)
            {
                if(ishide==false) {
                    ishide=true;
                    ponyb_hide.setIcon(ponyb_hidei);
                    ponyb_front.setVisible(false);
                    ponyb_exit.setVisible(false);
                    ponyb_open.setVisible(false);
                }
                else {
                    ishide=false;
                    ponyb_hide.setIcon(ponyb_uhidei);
                    ponyb_front.setVisible(true);
                    ponyb_exit.setVisible(true);
                    ponyb_open.setVisible(true);
                }

            }
        });
        ponyFrame.add(ponyb_hide);
        
        /*IMG*/
        JLabel Label00 = new JLabel(ponydefaultimg);
        Label00.setSize(ponydefaultimg.getIconWidth(),ponydefaultimg.getIconHeight());
        ponyFrame.add(Label00);
        
        /*BUTTON_OPEN*/
        ponyb_open.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e)
            {
                ponyresult=ponychooser.showOpenDialog(ponyFrame);
                if(ponychooser.APPROVE_OPTION == ponyresult)
                {
                    ponySname=ponychooser.getSelectedFile().getPath();
                    ponyimgtmp=new ImageIcon(Toolkit.getDefaultToolkit().getImage(ponySname));
                    
                    if(!(ponyimgtmp.getIconWidth()>=minx && ponyimgtmp.getIconHeight()>=miny))
                    {
                        ponyimgtmp=ponydefaultimg;
                    }
                    ori_pict_x=ponyimgtmp.getIconWidth();
                    ori_pict_y=ponyimgtmp.getIconHeight();
                    Label00.setIcon(ponyimgtmp);
                    ponyFrame.setSize(ponyimgtmp.getIconWidth(),ponyimgtmp.getIconHeight());
                    Label00.setSize(ponyimgtmp.getIconWidth(),ponyimgtmp.getIconHeight());
                    ponyb_front.setLocation(ponyimgtmp.getIconWidth()-64, 5);
                    ponyb_exit.setLocation(ponyimgtmp.getIconWidth()-32, 5);
                    ponyb_open.setLocation(5, ponyimgtmp.getIconHeight()-32);
                    ponyscale=20;
                }
            }
        });
        
        /*MOUSE*/
        ponyFrame.addMouseListener(new MouseAdapter() {
            @Override
            public void mousePressed(MouseEvent e) {
                pframexOri=e.getX();
                pframeyOri=e.getY();
            }
        });
        ponyFrame.addMouseMotionListener(new MouseMotionAdapter() {
            @Override
            public void mouseDragged(MouseEvent e) {
                ponyFrame.setLocation(e.getXOnScreen()-pframexOri,e.getYOnScreen()-pframeyOri);
            }
        });
        ponyFrame.addMouseWheelListener(new MouseWheelListener() {
            @Override
            public void mouseWheelMoved(MouseWheelEvent e) {
                if(e.getWheelRotation()==-1){
                    if(ponyscale<=19) {
                        ++ponyscale;
                        pict_x=(ori_pict_x/20)*ponyscale;
                        pict_y=(ori_pict_y/20)*ponyscale;
                        if(ponyscale==20) {
                            pict_x=ori_pict_x;
                            pict_y=ori_pict_y;
                        }
                        ImageIcon ponytmp=new ImageIcon(ponyimgtmp.getImage().getScaledInstance(pict_x, pict_y, Image.SCALE_DEFAULT));
                        Label00.setIcon(ponytmp);
                        ponyFrame.setSize(pict_x,pict_y);
                        Label00.setSize(pict_x,pict_y);
                        ponyb_front.setLocation(pict_x-64, 5);
                        ponyb_exit.setLocation(pict_x-32, 5);
                        ponyb_open.setLocation(5, pict_y-32);
                      }
                  }
                if(e.getWheelRotation()==1){
                    if(ponyscale>=1 && ((ori_pict_x/20)*(ponyscale-1)>=minx) && ((ori_pict_y/20)*(ponyscale-1)>=miny)) {
                        --ponyscale;
                        pict_x=(ori_pict_x/20)*ponyscale;
                        pict_y=(ori_pict_y/20)*ponyscale;
                        ImageIcon ponytmp=new ImageIcon(ponyimgtmp.getImage().getScaledInstance(pict_x, pict_y, Image.SCALE_DEFAULT));
                        Label00.setIcon(ponytmp);                        
                        ponyFrame.setSize(pict_x,pict_y);
                        Label00.setSize(pict_x,pict_y);
                        ponyb_front.setLocation(pict_x-64, 5);
                        ponyb_exit.setLocation(pict_x-32, 5);
                        ponyb_open.setLocation(5, pict_y-32);
                      }
                  }
            }
        });
        
        ponyFrame.setVisible(true);
    }
}

没注释，摸了

附件：

*jar所在目录*\icons\

32.png

exit.png

front.png

hide.png

nfront.png

open.png

uhide.png

*jar所在目录*\pictures\

default.png