import ij.*;
import ij.process.*;
import ij.plugin.filter.*;
import ij.gui.NewImage;
import ij.gui.*;
import java.awt.Color;

public class GrayToColor implements PlugInFilter{

	public void run(ImageProcessor ip){

		int w= ip.getWidth();
		int h= ip.getHeight();
		String title = "Same image with color changed";
		ColorChooser cc = new ColorChooser("couleur", Color.yellow, true);
		Color cRef = cc.getColor();

		if(cRef == null){

			IJ.error("Plugin Canceled");
			return;

		}

		int rRef = cRef.getRed();
		int gRef = cRef.getGreen();
		int bRef = cRef.getBlue();

		ImagePlus grayImage = NewImage.createRGBImage(title, w,h,1, NewImage.FILL_WHITE);
		ImageProcessor ipGrayImage = grayImage.getProcessor();

		int r,g,b;

		for(int y=0; y<h; y++ )
		{
			for(int x=0; x<w ; x++ )
			{
				r = (ip.getPixel(x,y)& 0xff0000) >>16;
				g = (ip.getPixel(x,y)& 0x00ff00) >>8;
				b= (ip.getPixel(x,y) & 0x0000ff);


				int[] rgb = {(r + rRef), (g + gRef), (b + bRef)};
				ipGrayImage.putPixel(x,y,rgb);
			}
		}
		grayImage.show();
		grayImage.updateAndDraw();
	}

	public int setup(String arg, ImagePlus imp){

		if (arg.equals("about")){

			IJ.showMessage("Gray to colored image");
			return DONE;

		}

		return DOES_8G;

	}
}