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Modules/multimedia/image.java

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+/*
+image.java
+ *
+ *    Copyright (c) 2000-2001, Ted Nelson and Tuomas Lukka
+ *
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of
+ *    the licenses.
+ *
+ *    This software 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 README
+ *    file for more details.
+ *
+ */
+/*
+ *	Written by Tero Mäyränen
+ */
+
+package org.gzigzag.module.multimedia;
+import org.gzigzag.*;
+import java.awt.*;
+import java.awt.image.*;
+import java.util.*;
+import java.net.*;
+
+/** Image mediazob.
+ * Images can be read from a different place by setting the property images.from, 
+ * like 
+ * java -Dimages.from=img:///=file:///home/antkaij/cvs/gzigzag-demo/Java/demospace-lomat.2.zz/ org.gzigzag.Main  demospace-lomat.2.zz
+ */
+
+public class image extends MediaZOb
+{
+	public static final String rcsid = "$Id: image.java,v 1.7 2001/02/28 05:16:55 tjl Exp $";
+    public static boolean dbg = false;
+    private static void p(String s) { if(dbg) ZZLogger.log(s); }
+    private static void pa(String s) { ZZLogger.log(s); }
+
+	private static Hashtable convert = null;
+	private Pixels pix = null;
+
+	private static String doConvert(String str) {
+		if (convert == null) {
+			convert = new Hashtable();
+			String prop = null;
+			try {
+				prop = System.getProperty("images.from");
+			} catch(Throwable t) {}
+			if (prop != null) {
+				StringTokenizer tok = new StringTokenizer(prop, ";=");
+				while (tok.hasMoreTokens()) {
+					String a = tok.nextToken();
+					String b = tok.nextToken();
+					p(""+a+" => "+b);
+					convert.put(a, b);
+				}
+			}
+		}
+		for(Enumeration e = convert.keys(); e.hasMoreElements(); ) {
+			String from = (String)e.nextElement();
+			p(""+str+"; "+from);
+			if (!str.startsWith(from)) continue;
+			String to = (String)convert.get(from);
+			p(""+str+" => "+to + str.substring(from.length()));
+			str = to + str.substring(from.length());
+			return str;
+		}
+		p("Not converted: "+str);
+		return str;
+	}
+	public Pixels getPixels()
+	{
+		if (pix == null)
+		{
+			try
+			{
+				URL imgURL = new URL(doConvert(getText("")));
+				p("URL: "+imgURL);
+				Image img = Toolkit.getDefaultToolkit().getImage(imgURL);
+				int w = img.getWidth(null);
+				int count = 2000000;
+				while ((w < 0) && (count-- > 0)) w = img.getWidth(null);
+				int h = img.getHeight(null);
+				
+				pix = new Pixels(w, h);
+				PixelGrabber pg = new PixelGrabber(img, 0, 0, w, h, pix.getPixels(), 0, w);
+				pg.grabPixels();
+			}
+			catch (Exception e) {}
+		}
+		return pix;
+	}
+}
+
+// Local variables:
+//   tab-width: 4
+// End: