Image.java

package edu.caltech.cs2.lab02;

import edu.caltech.cs2.libraries.Pixel;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class Image {
    private Pixel[][] pixels;

    public Image(File imageFile) throws IOException {
        BufferedImage img = ImageIO.read(imageFile);
        this.pixels = new Pixel[img.getWidth()][img.getHeight()];
        for (int i = 0; i < img.getWidth(); i++) {
            for (int j = 0; j < img.getHeight(); j++) {
                this.pixels[i][j] = Pixel.fromInt(img.getRGB(i, j));
            }
        }
    }

    private Image(Pixel[][] pixels) {
        this.pixels = pixels;
    }

    public Image transpose() {
        return null;
    }

    public String decodeText() {
        return null;
    }

    public Image hideText(String text) {
        return null;
    }

    public BufferedImage toBufferedImage() {
        BufferedImage b = new BufferedImage(this.pixels.length, this.pixels[0].length, BufferedImage.TYPE_4BYTE_ABGR);
        for (int i = 0; i < this.pixels.length; i++) {
            for (int j = 0; j < this.pixels[0].length; j++) {
                b.setRGB(i, j, this.pixels[i][j].toInt());
            }
        }
        return b;
    }

    public void save(String filename) {
        File out = new File(filename);
        try {
            ImageIO.write(this.toBufferedImage(), filename.substring(filename.lastIndexOf(".") + 1, filename.length()), out);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}