Pixelator

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;

public class pixels extends JPanel{
    public static JFrame g;
    public static JProgressBar p;
    public static JLabel direct;
    public static JLabel eta;
    public static ImageIcon imageIn;
    public static ImageIcon imageOut;

    public static JFrame in;
    public static JTextField gid;
    public static JTextField scalei;
    public static JLabel warning1;
    public static JLabel warning2;
    public static JButton select;

    public static String id = null;
    public static float scale = 0.0f;


    public static BufferedImage load(String filename, String id){
        //Initialize BufferedImage input
        BufferedImage input = null;
        try{
            //Set the BufferedImage's path
            input = ImageIO.read(new File("C:\\Users\\"+System.getProperty("user.name")+"\\Documents\\Dolphin Emulator\\Dump\\Textures\\"+id+"\\"+filename));
            return input;
        } catch (IOException e){
            //Exit the program if error occurs.
            System.out.println("Sorry! Here is the exception: "+e);
            return input;
        }
    } public static BufferedImage pixelate(BufferedImage imgIn, float scale){
        //Create BufferedImage type RGB with Alpha.
        int imageType = BufferedImage.TYPE_INT_ARGB;
        //Initializes the new scaled BufferedImage with the scaled dimensions.
        BufferedImage scaled = new BufferedImage(Math.round(imgIn.getWidth()*scale), Math.round(imgIn.getHeight()*scale), imageType);
        //Initialize Grpahics2D for the scaled BufferedImage.
        Graphics2D g = scaled.createGraphics();
        //Set Graphics2D to retain Alpha.
        g.setComposite(AlphaComposite.Src);
        //Create the modifier for drawRenderedImage() and executes it.
        AffineTransform at = AffineTransform.getScaleInstance(scale, scale);
        g.drawRenderedImage(imgIn, at);
        //Frees up system resources and returns the scaled image.
        g.dispose();
        return scaled;
    } public static void save(BufferedImage save, String name){
        try{
            //Saves image with specified name, directory, and .png extension.
            File output = new File (name);
            ImageIO.write(save, "png", output);
        } catch (IOException e){
            //Exits if there is an error
            System.out.println("Sorry! Here is the exception: "+e);
        }
    } public static void createMainGUI (){
        g = new JFrame("Pixelator");
        g.setSize(800, 300);
        g.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        g.setLayout(new BorderLayout());
        g.setLocationRelativeTo(null);

        direct = new JLabel("");
        direct.setHorizontalAlignment(JLabel.CENTER);
        direct.setToolTipText("Directory working in.");

        eta = new JLabel("");
        eta.setHorizontalAlignment(JLabel.CENTER);

        p = new JProgressBar(0, 500);
        p.setValue(0);
        p.setStringPainted(true);
        p.setMinimum(0);

        imageIn = new ImageIcon();
        imageOut = new ImageIcon();

        g.add(new JLabel(imageIn), BorderLayout.WEST);
        g.add(new JLabel(imageOut), BorderLayout.EAST);
        g.add(eta, BorderLayout.CENTER);
        g.add(direct, BorderLayout.NORTH);
        g.add(p, BorderLayout.SOUTH);


        g.setVisible(true);
    } public static void createInputGUI(){
        in = new JFrame ("Pixelator");
        in.setSize(300, 150);
        in.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        in.setLayout(new GridLayout(3,2));
        in.setLocationRelativeTo(null);

        gid = new JTextField(20);
        gid.setText("Game I.D.");
        scalei = new JTextField(20);
        scalei.setText("Scale");

        warning1 = new JLabel("Invalid ID.");
        warning2 = new JLabel("Invalid scale.");
        warning1.setForeground(Color.RED);
        warning2.setForeground(Color.RED);
        warning1.setVisible(false);
        warning2.setVisible(false);

        select = new JButton("O.K.");
        select.setMnemonic('O');
        select.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e){
                File path = new File("C:\\Users\\"+System.getProperty("user.name")+"\\Documents\\Dolphin Emulator\\Dump\\Textures\\"+gid.getText()+"\\");
                if (!path.exists() || gid.getText() == ""){
                    warning1.setVisible(true);
                    gid.setBackground(new Color(249, 144, 144));
                } else {
                    try{
                        Float.parseFloat(scalei.getText());
                    } catch(NumberFormatException e1){
                        warning2.setVisible(true);
                        scalei.setBackground(new Color(249, 144, 144));
                    }
                    id = gid.getText();
                    scale = Float.parseFloat(scalei.getText());
                    in.setVisible(false);
                }
            }
        });

        in.add(gid);
        in.add(warning1);
        in.add(scalei);
        in.add(warning2);
        in.add(select);

        in.setVisible(true);
    }
    public static void main (String[] args){
        //Ask for various inputs
        createInputGUI();
        while(id == null || scale == 0.0f){
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        int recip = (int)(1.0/scale);
        //Create folder that it will be accessing and create a list of its files.
        File infolder = new File("C:\\Users\\"+System.getProperty("user.name")+"\\Documents\\Dolphin Emulator\\Dump\\Textures\\"+id+"\\");
        File outfolder = new File("C:\\Users\\"+System.getProperty("user.name")+"\\Documents\\Dolphin Emulator\\Load\\Textures\\"+id+"\\");
        if (!outfolder.exists()){
            outfolder.mkdir();
        }
        File[] files = infolder.listFiles();
        createMainGUI();
        direct.setText("Current Directory: C:\\Users\\"+System.getProperty("user.name")+"\\Documents\\Dolphin Emulator\\Dump\\Textures\\"+id+"\\");
        p.setMaximum(files.length);

        for (int i = 0; i < files.length; i++){
            //For each file, load it, then scale it down then up (MS Paint-esque). Finally, save file in the Load folder to be loaded by Dolphin.
            long startTime = 0;
            if (i%50 == 0){
                startTime = System.nanoTime();
            }
            BufferedImage input = load(files[i].getName(), id);

            p.setString("C:\\Users\\"+System.getProperty("user.name")+"\\Documents\\Dolphin Emulator\\Dump\\Textures\\"+id+"\\"+files[i].getName() + " (" + i + " out of " + files.length + ")");
            imageIn.setImage(input);
            g.setSize((input.getWidth()*2)+200, g.getHeight());
            g.setLocationRelativeTo(null);
            g.repaint();

            input = pixelate(input, scale);
            input = pixelate(input, recip);

            imageOut.setImage(input);
            g.repaint();
            save(input, "C:\\Users\\"+System.getProperty("user.name")+"\\Documents\\Dolphin Emulator\\Load\\Textures\\"+id+"\\"+files[i].getName());
            p.setValue(i);

            if(i%100 == 0){
                long endTime = System.nanoTime();
                double duration = (double)(endTime-startTime) / 1000000000.0;
                eta.setText("-> ETA " + Math.floor(duration * ((double)(files.length-i))) + " secs");
            }
        }
    }
}