/*
 * Grass.java
 *
 * Created: April 18, 2005
 * By: Stan Sclaroff, Boston University Dept. of Computer Science
 * Description: Grass class for testing program assignment 8.
 * 
 */

package program8;

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;

public class Grass extends JFrame implements ImageObserver{ 
    
    BufferedImage b;
    int xOffset,yOffset;
    static int xLoc=0, yLoc=0;
    static int numWindows=0;
    
    public Grass(String s, int[][] imageArray) {
        // put desired text on frame
        super(s);
           
        // Copy contents of user's imageArray into buffered image
        // for drawing later. 
        int height = imageArray.length, width = imageArray[0].length;
        b = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
        for(int i=0;i<height;++i)
            for(int j=0;j<width;++j)
                b.setRGB(j,i,imageArray[i][j]);        
    
        // initialize the display frame
        setupJFrame(width,height);
     
        // paint it
        repaint();
    }
    
    public Grass(String s, String fileName){
        // put desired text on frame
        super(s);
        
        // open the image file      
        MediaTracker media = new MediaTracker(this);
        java.awt.Image im = Toolkit.getDefaultToolkit().createImage(fileName);
        media.addImage(im,0);
        try{
            media.waitForID(0);
        }
        catch(Exception e){
            System.out.println("Error in reading input file");
        }
     
        // copy contents to a buffered image object
        int width = im.getWidth(this), height = im.getHeight(this);
        b = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = b.createGraphics();
        g2.drawImage(im,0,0,this);
        g2.finalize();
        
          // initialize the display frame
        setupJFrame(width,height);

        // paint it
        repaint();
    }
    
    // General purpose private method to initialize
    // the dimensions and state of a JFrame
    private void setupJFrame(int width, int height){
        setSize(width,height);
        setBackground(Color.black);
        setVisible(true);
        setDefaultCloseOperation(this.EXIT_ON_CLOSE);
        
        // Position this window at location (xLoc,yLoc)
        // position next window to the left
        // if three across, then also position below.
        setLocation(xLoc,yLoc);
        if(++numWindows%3==0){
            yLoc+=height+34;
            xLoc=0;
        }
        else
            xLoc+=width;
        
        // Compensate for the additional width/height of 
        // the JFrame framing
        Rectangle r = getContentPane().getBounds();
        setSize(2*width-r.width,2*height-r.height);
        xOffset = (width - r.width)/2;
        yOffset = (height - xOffset - r.height);
        setResizable(false);
    }
    
    // Repaint the image
    public void paint(Graphics g){   
        g.drawImage(b,xOffset,yOffset,b.getWidth(),b.getHeight(),this);
    }
    
    // Return the image values in 2D array format
    public int[][] getLawnArray(){
        // Load pixel values into array  
        int[][] lawnArray = new int[b.getHeight()][b.getWidth()];
        for(int i=0;i<b.getHeight();++i)
            for(int j=0;j<b.getWidth();++j)
                lawnArray[i][j]=b.getRGB(j,i);
        
        return lawnArray;
    }
}