import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.p_w_picpath.BufferedImage;
import java.awt.p_w_picpath.ColorModel;
import java.awt.p_w_picpath.MemoryImageSource;
import java.awt.p_w_picpath.PixelGrabber;
import java.io.File;
import java.io.IOException;
import java.util.LinkedList;
import javax.p_w_picpathio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.filechooser.FileFilter;
public class MyShowImage extends JFrame {
// 保存當前操作的像素矩陣
private int currentPixArray[] = null;
// 圖像的路徑
private String fileString = null;
// 用於顯示圖像的標籤
private JLabel p_w_picpathLabel = null;
// 加載的圖像
private BufferedImage newImage;
// 圖像的高和寬
private int h, w;
// 保存歷史操作圖像矩陣
private LinkedList<int[]> p_w_picpathStack = new LinkedList<int[]>();
private LinkedList<int[]> tempImageStack = new LinkedList<int[]>();
public MyShowImage(String title) {
super(title);
this.setSize(800, 600);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 創建菜單
JMenuBar jb = new JMenuBar();
JMenu fileMenu = new JMenu("文件");
jb.add(fileMenu);
JMenuItem openImageMenuItem = new JMenuItem("打開圖像");
fileMenu.add(openImageMenuItem);
openImageMenuItem.addActionListener(new OpenListener());
JMenuItem exitMenu = new JMenuItem("退出");
fileMenu.add(exitMenu);
exitMenu.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
JMenu operateMenu = new JMenu("圖像處理");
jb.add(operateMenu);
JMenuItem RGBtoGrayMenuItem = new JMenuItem("灰度圖像轉換");
operateMenu.add(RGBtoGrayMenuItem);
RGBtoGrayMenuItem.addActionListener(new RGBtoGrayActionListener());
JMenuItem balanceMenuItem = new JMenuItem("均衡化");
operateMenu.add(balanceMenuItem);
balanceMenuItem.addActionListener(new BalanceActionListener());
JMenu frontAndBackMenu = new JMenu("歷史操作");
jb.add(frontAndBackMenu);
JMenuItem backMenuItem = new JMenuItem("後退");
frontAndBackMenu.add(backMenuItem);
backMenuItem.addActionListener(new BackActionListener());
JMenuItem frontMenuItem = new JMenuItem("前進");
frontAndBackMenu.add(frontMenuItem);
frontMenuItem.addActionListener(new FrontActionListener());
this.setJMenuBar(jb);
p_w_picpathLabel = new JLabel("");
JScrollPane pane = new JScrollPane(p_w_picpathLabel);
this.add(pane, BorderLayout.CENTER);
this.setVisible(true);
}
private class OpenListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
JFileChooser jc = new JFileChooser();
jc.setFileFilter(new FileFilter() {
public boolean accept(File f) { // 設定可用的文件的後綴名
if (f.getName().endsWith(".jpg") || f.isDirectory()|| f.getName().endsWith(".gif") || f.getName().endsWith(".bmp")) {
return true;
}
return false;
}
public String getDescription() {
return "圖片(*.jpg,*.gif,*bmp)";
}
});
int returnValue = jc.showOpenDialog(null);
if (returnValue == JFileChooser.APPROVE_OPTION) {
File selectedFile = jc.getSelectedFile();
if (selectedFile != null) {
fileString = selectedFile.getAbsolutePath();
try {
newImage = ImageIO.read(new File(fileString));
w = newImage.getWidth();
h = newImage.getHeight();
currentPixArray = getPixArray(newImage, w, h);
p_w_picpathStack.clear();
tempImageStack.clear();
p_w_picpathStack.addLast(currentPixArray);
p_w_picpathLabel.setIcon(new ImageIcon(newImage));
} catch (IOException ex) {
System.out.println(ex);
}
}
}
MyShowImage.this.repaint();
// MyShowImage.this.pack();
}
}
// ////////////////菜單監聽器///////////
private class RGBtoGrayActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
int[] resultArray = RGBtoGray(currentPixArray);
p_w_picpathStack.addLast(resultArray);
currentPixArray = resultArray;
showImage(resultArray);
tempImageStack.clear();
}
}
private class BalanceActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
int[] resultArray = balance(currentPixArray);
p_w_picpathStack.addLast(resultArray);
currentPixArray = resultArray;
showImage(resultArray);
tempImageStack.clear();
}
}
private class BackActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
if (p_w_picpathStack.size() <= 1) {
JOptionPane.showMessageDialog(null, "此幅圖片的處理已經沒有後退歷史操作了", "提示",
JOptionPane.INFORMATION_MESSAGE);
} else {
tempImageStack.addLast(p_w_picpathStack.removeLast());
currentPixArray = p_w_picpathStack.getLast();
showImage(currentPixArray);
}
}
}
private class FrontActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
if (tempImageStack.size() < 1) {
JOptionPane.showMessageDialog(null, "此幅圖片的處理已經沒有前進歷史操作了", "提示",
JOptionPane.INFORMATION_MESSAGE);
} else {
currentPixArray = tempImageStack.removeFirst();
p_w_picpathStack.addLast(currentPixArray);
showImage(currentPixArray);
}
}
}
// ////////////////獲取圖像像素矩陣/////////
private int[] getPixArray(Image im, int w, int h) {
int[] pix = new int[w * h];
PixelGrabber pg = null;
try {
pg = new PixelGrabber(im, 0, 0, w, h, pix, 0, w);
if (pg.grabPixels() != true)
try {
throw new java.awt.AWTException("pg error" + pg.status());
} catch (Exception eq) {
eq.printStackTrace();
}
} catch (Exception ex) {
ex.printStackTrace();
}
return pix;
}
// ////////////////顯示圖片///////////
private void showImage(int[] srcPixArray) {
Image pic = createImage(new MemoryImageSource(w, h, srcPixArray, 0, w));
ImageIcon ic = new ImageIcon(pic);
p_w_picpathLabel.setIcon(ic);
p_w_picpathLabel.repaint();
}
// ////////////////灰度轉換///////////
private int[] RGBtoGray(int[] ImageSource) {
int[] grayArray = new int[h * w];
ColorModel colorModel = ColorModel.getRGBdefault();
int i, j, k, r, g, b;
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++) {
k = i * w + j;
r = colorModel.getRed(ImageSource[k]);
g = colorModel.getGreen(ImageSource[k]);
b = colorModel.getBlue(ImageSource[k]);
int gray = (int) (r * 0.3 + g * 0.59 + b * 0.11);
r = g = b = gray;
grayArray[i * w + j] = (255 << 24) | (r << 16) | (g << 8) | b;
}
}
return grayArray;
}
// ///////////////圖像均衡化///////////
private int[] balance(int[] srcPixArray) {
int[] histogram = new int[256];
int[] dinPixArray = new int[w * h];
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int grey = srcPixArray[i * w + j] & 0xff;
histogram[grey]++;
}
}
double a = (double) 255 / (w * h);
double[] c = new double[256];
c[0] = (a * histogram[0]);
for (int i = 1; i < 256; i++) {
c[i] = c[i - 1] + (int) (a * histogram[i]);
}
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int grey = srcPixArray[i * w + j] & 0x0000ff;
int hist = (int) c[grey];
dinPixArray[i * w + j] = 255 << 24 | hist << 16 | hist << 8
| hist;
}
}
return dinPixArray;
}
public static void main(String[] args) {
new MyShowImage("ShowImage");
}
}