/**ImageLoader.java - handles the loading of images.
 * This class is only owned by ImageManager
 */
package graphicsManager;
import java.awt.image.BufferedImage;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Graphics2D;

import java.io.IOException;

import javax.imageio.*;

/**
 * @author Sam
 *
 */
public class ImageLoader {
	//private static String imgDir = "Images/";
	private GraphicsConfiguration gc;
	public ImageLoader() {
		GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
	    gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
	}
	
	// ------------------- Image Loading ------------------
	/** loads an image using ImageIO.
	 * Translates the image into a managed image before returning.
	 * @param filename the name of the image to be loaded
	 * @return the loaded (managed) image
	 */
	public SpriteImage loadImageFromFile(String filename) 
	{
		try {
			BufferedImage buffImage =  ImageIO.read( 
					getClass().getResource(filename) ); 
			//not a managed image

			//retrieve information about the transparency
			int transparency = buffImage.getColorModel().getTransparency();
			//create a managed buffered image
			BufferedImage copy =  gc.createCompatibleImage(
					buffImage.getWidth(), buffImage.getHeight(),
					transparency );
			// create a graphics context
			Graphics2D g2d = copy.createGraphics();
			// g2d.setComposite(AlphaComposite.Src);

			// copy image
			g2d.drawImage(buffImage,0,0,null);
			g2d.dispose();
			
			return new SpriteImage(copy, 0, 0);
		} 
		catch(IOException e) {
			System.out.println("Load Image error for " +
					 filename + ":\n" + e); 
			return null;
		}
	}
	
	public SpriteImage loadImageFromFile(String filename, int x, int y) { 
		SpriteImage sprite = loadImageFromFile(filename);
		sprite.setLocation(x, y);
		
		return sprite;
	}
}