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package aufgaben.imageio;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTextField;
import aufgaben.Aufgabe;
import misc.Utils;
public class Aufgabe1 extends Aufgabe {
private final int width = 500, height = 500;
private boolean done = false;
private String name;
private JPanel panel;
private JTextField inPath, outPath;
private JButton readButton, writeButton;
private BufferedImage bild;
public Aufgabe1() {
name = "Lesen Speichern";
this.setSize(width, height);
this.setTitle(name);
this.addWindowListener(
new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.out.println("close");
done = true;
}
}
);
this.setLayout(null);
}
@Override
public boolean done() {
return done;
}
@Override
public String getName() {
return name;
}
@Override
public void init() {
inPath = new JTextField();
inPath.setBounds(50, 50, 200, 20);
outPath = new JTextField();
outPath.setBounds(50, 80, 200, 20);
readButton = new JButton("Lesen");
readButton.setBounds(260, 50, 100, 20);
readButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
bild = readImage(new File(inPath.getText()));
/*
try {
bild = ImageIO.read(new File("title.png"));
} catch (IOException e) {
e.printStackTrace();
}
*/
panel.repaint();
}
});
writeButton = new JButton("Schreiben");
writeButton.setBounds(260, 80, 100, 20);
writeButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
writeImage(new File(outPath.getText()), bild);
}
});
panel = new JPanel() {
public void paint(Graphics g) {
if(bild != null)
g.drawImage(bild, 0, 0, 500, 390, this);
}
};
panel.setBounds(0, 110, 500, 390);
this.add(inPath);
this.add(outPath);
this.add(readButton);
this.add(writeButton);
this.add(panel);
this.repaint();
}
private BufferedImage getGreyImage(BufferedImage i) {
BufferedImage image = new BufferedImage(i.getWidth(), i.getHeight(), i.getType());
for(int x = 0, width = i.getWidth(); x<width; x++) {
for(int y = 0, height = i.getHeight(); y<height; y++) {
Color c = new Color(i.getRGB(x, y));
int h = (int)(((double)(c.getRed()+c.getGreen()+c.getBlue())/765)*255);
image.setRGB(x, y, new Color(h, h, h).getRGB());
}
}
return image;
}
private BufferedImage readImage(File file) {
FileInputStream fis;
BufferedInputStream bis;
try {
fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
byte[] b = new byte[4];
bis.read(b);
int width = byteArrayToInt(b);
bis.read(b);
int height = byteArrayToInt(b);
bis.read(b);
int type = byteArrayToInt(b);
BufferedImage image = new BufferedImage(width, height, type);
for(int x = 0; x<width; x++) {
for(int y = 0; y<height; y++) {
bis.read(b);
image.setRGB(x, y, byteArrayToInt(b));
}
}
bis.close();
fis.close();
return image;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private void writeImage(File file, BufferedImage image) {
FileOutputStream fos;
BufferedOutputStream bos;
try {
fos = new FileOutputStream(file);
bos = new BufferedOutputStream(fos);
bos.write(intToByteArray(image.getWidth()));
bos.write(intToByteArray(image.getHeight()));
bos.write(intToByteArray(image.getType()));
for(int x = 0, width = image.getWidth(); x<width; x++) {
for(int y = 0, height = image.getHeight(); y<height; y++) {
bos.write(intToByteArray(image.getRGB(x, y)));
}
}
bos.close();
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static int byteArrayToInt(byte[] b)
{
return b[3] & 0xFF |
(b[2] & 0xFF) << 8 |
(b[1] & 0xFF) << 16 |
(b[0] & 0xFF) << 24;
}
public static byte[] intToByteArray(int a)
{
return new byte[] {
(byte) ((a >> 24) & 0xFF),
(byte) ((a >> 16) & 0xFF),
(byte) ((a >> 8) & 0xFF),
(byte) (a & 0xFF)
};
}
}
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