ImageFactory.java #1

/*
 *
 * Perforce/JBuilder Opentool
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
package com.dafreels.vcs.util;

import java.util.*;
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
/**
 * Title:       Perforce OpenTool
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:
 * @author Shannon J. Newbold
 * @version 1.0
 */

public class ImageFactory {

	public static Hashtable disabledImageTable = new Hashtable();
	public static MediaTracker mTracker        = new MediaTracker(new JLabel());

	/**
	 * return an ImageIcon from the complete or relative path
	 */
	public static javax.swing.ImageIcon getImageIcon(String name )
	{
		if ( name == null || name.length() == 0 ) return null;

		try
		{
			java.net.URL url = ClassLoader.getSystemResource(name);
			if ( url == null ) return null;
			java.awt.Toolkit tk = java.awt.Toolkit.getDefaultToolkit();
			if ( tk == null ) return null;
			java.awt.Image image = tk.getImage(url);
			if ( image == null ) return null;
			return new javax.swing.ImageIcon(image);
		}
		catch (Exception e)
		{
			System.out.println("getImageIcon: Error loading " + name +" Error: " + e);
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * The method creates a factory that allows the interation over a 1 or 2 dimmensional
	 * "array" of same sized icons in an image.
	 * @param name   the name of the image to load
	 * @param width  the width of every image
	 * @param height the height of every image.
	 * @returns a new factory that draws the images.  Returns null if there was a problem loading the image.
	 */
	public static CompositeIconFactory getCompositeIconFactory(String name, int width, int height) {
		javax.swing.ImageIcon img = getImageIcon(name);
		if(img == null) return null;
		return new CompositeIconFactory(img.getImage(),width,height);

	}

	/**
	 * Creates a new image that is a disabled version of the given image.
	 * Returns null if the input image was null or there was a problem with the
	 * GrayFilter.
	 */
	public static synchronized Image getDisabledImage(Image image) {
		if (image == null)
			return null;

		Image dis_img = (Image)disabledImageTable.get(image);
		if(dis_img == null) {
			dis_img = GrayFilter.createDisabledImage(image);
			waitForImage(dis_img);
			disabledImageTable.put(image,dis_img);
		}
		return dis_img;
	}

	/**
	 * Creates a new icon that is a disabled version of the given icon.
	 * Returns null if the input image was null or there was a problem with the
	 * GrayFilter.
	 */
	 public static synchronized Icon getDisabledIcon(Icon icon) {
		if (icon == null)
			return null;
		Icon dis_icon = (Icon)disabledImageTable.get(icon);
		if(dis_icon == null) {
			Image img;
			if(icon instanceof ImageIcon) {
				img = ((ImageIcon)icon).getImage();
			} else {
				img = new java.awt.image.BufferedImage(icon.getIconWidth(),icon.getIconHeight(),2);
				Graphics g = img.getGraphics();
				icon.paintIcon(null,g,0,0);
			}
			img = GrayFilter.createDisabledImage(img);
			dis_icon = new ImageIcon(img);
			disabledImageTable.put(icon,dis_icon);
		}
		return dis_icon;
	}

	private static void waitForImage(Image img) {
		try {
		   mTracker.addImage(img,0);
		   mTracker.waitForID(0);
		   mTracker.removeImage(img,0);
		} catch (Exception e) {
		}
	}

	private class q extends Component {
	}


}