DEV/DEV2.1/TP9:FluxOctets/Imag.java

import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
import java.io.*;

public class Imag extends JComponent{
	private Image image;

	public Imag(int width, int height, String path) throws IOException {
		image = readFromFile(width, height, path);
		setPreferredSize(new Dimension(width, height));
	}

	private Image readFromFile(int width, int height, String path) throws IOException {
		FileInputStream input = new FileInputStream(path);
		BufferedInputStream input2 = new BufferedInputStream(input);
		BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
		for (int i = 0; i < height; i++){
			for (int j = 0; j < width; j++){
				int r = input.read();
				int g = input.read();
				int b = input.read();
				int rgb = (r << 16 | (g << 8) | (b));
				img.setRGB(j, i, rgb);
			}
		}
		return img;
	}

	@Override

	protected void paintComponent(Graphics pinceau) {
    // obligatoire : on cree un nouveau pinceau pour pouvoir le modifier plus tard
    Graphics pinceau2 = pinceau.create();
    	if (this.isOpaque()) {
      		// obligatoire : on repeint toute la surface avec la couleur de fond
      		pinceau2.setColor(this.getBackground());
      		pinceau2.fillRect(0, 0, this.getWidth(), this.getHeight());
    	}
    	pinceau2.drawImage(this.image, 0, 0, this);
    }
}