import java.awt.*;
import java.applet.Applet;
import java.awt.image.*;

public class EzImg{
	static EzImg o = null;
	public static void init(Applet ap){
		o = new EzImg(ap);
	}

	public static Image create(Applet ap){
		return new EzImg(ap).create(ap.size());
	}
	public static Dimension size(Image img){
		return new Dimension(img.getWidth(null), img.getHeight(null));
	}
	public static Rectangle rect(Image img){
		return new Rectangle(size(img));
	}

	public Applet ap;
	int bakRGB; // for alphaImg

	public EzImg(Applet ap){
		this.ap = ap;
		initBakRGB();
	}
	void initBakRGB(){
		Image img = create(new Dimension(1,1));
		bakRGB = getPix(img,0,0);
	}
	public Image createImage(Dimension sz){
		return ap.createImage(sz.width, sz.height);
	}
	public Image create(Dimension sz){
		Image img = createImage(sz);
		Graphics g = img.getGraphics();
		Color bk = g.getColor();
		g.setColor(ap.getBackground());
		g.fillRect(0,0,sz.width,sz.height);
		g.setColor(bk);
		return img;
	}
	public Image maru(Dimension sz, Color col){
		Image img = create(sz);
		Graphics g = img.getGraphics();
		g.setColor(col);
		g.fillOval(0,0,sz.width,sz.height);
		return img;
	}
	public Image btn(Dimension sz, Color col){
		Image img = create(sz);
		Graphics g = img.getGraphics();
		g.setColor(col);
		g.fillRoundRect(0,0,sz.width,sz.height,10, 10);
		return img;
	}
	public Image failImage(String err, String name){
		Dimension sz = new Dimension(150,30);
		Image img = create(sz);
		Graphics g = img.getGraphics();
		String s = "Err:"+err;
		g.drawString(s, 0, 10);
		g.drawString(name, 0, 20);
		return img;
	}
	public Image getImage(String name){
		//Image img = ap.getImage(ap.getDocumentBase(), name);
		Image img = ap.getImage(ap.getCodeBase(), name);
		if(img==null) return failImage("Applet#getImage", name);

		MediaTracker mtr = new MediaTracker(ap);
		mtr.addImage(img, 0);
		try{
			mtr.waitForAll();
		}catch(InterruptedException e){}
		if(mtr.isErrorAny()){	
			return failImage("MediaTracker#waitForAll", name);
		}
		return img;
	}		

	public int getPix(Image img, int x, int y){
		Dimension sz = size(img);
		int[] pixs = new int[1];
		int scan = sz.width;
		int offset = scan * y + x;
		PixelGrabber pg = new PixelGrabber(
			img, x, y, 1, 1, pixs, offset, scan );
		try{
		  pg.grabPixels();
		}catch(InterruptedException e){}
		return pixs[0];
	}
	public int[] getPixs(Image img){
		Dimension sz = size(img);
		int[] pixs = new int[sz.width * sz.height];
		int offset = 0, scan = sz.width;
		PixelGrabber pg = new PixelGrabber(
			img, 0, 0, sz.width, sz.height, pixs, offset, scan );
		try{
		  pg.grabPixels();
		}catch(InterruptedException e){}
		return pixs;
	}
	public Image create(int[] pixs, int scan){
		int w = scan;
		int h = pixs.length / scan;
		int off = 0;
		return ap.createImage(new MemoryImageSource(w,h,pixs,off,scan));
	}
	public Image alphaImg(Image src, int alpha){
		int [] pixs = getPixs(src);
		alpha <<= 24;
		for(int i=0;i<pixs.length;i++){
			pixs[i] &= 0x00ffffff;
			pixs[i] |= alpha;
		}
		return create(pixs, size(src).width);
	}
	public Image alphaImg_bak(Image src, int bakRGB){
		int [] pixs = getPixs(src);
		for(int i=0;i<pixs.length;i++){
			if(pixs[i]!=bakRGB) continue;
			pixs[i] &= 0x00ffffff;
		}
		return create(pixs, size(src).width);
	}
	public Image alphaImg(Image src){
		return alphaImg_bak(src,bakRGB);
	}
	public Image alphaImg00(Image src){
		return alphaImg_bak(src,getPix(src,0,0));
	}
}

// EOF