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+/* ImageDecoder.java
+ Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.java.awt.image;
+
+import java.awt.*;
+import java.awt.image.*;
+import java.util.*;
+import java.io.*;
+import java.net.URL;
+
+public abstract class ImageDecoder implements ImageProducer
+{
+ Vector consumers = new Vector ();
+ String filename;
+ URL url;
+
+ public static ColorModel cm;
+
+ static
+ {
+ // FIXME: there was some broken code here that looked like
+ // it wanted to rely on this property. I don't have any idea
+ // what it was intended to do.
+ // String endian = System.getProperties ().getProperty ("gnu.cpu.endian");
+ }
+
+ public ImageDecoder (String filename)
+ {
+ this.filename = filename;
+ }
+
+ public ImageDecoder (URL url)
+ {
+ this.url = url;
+ }
+
+ public void addConsumer (ImageConsumer ic)
+ {
+ consumers.addElement (ic);
+ }
+
+ public boolean isConsumer (ImageConsumer ic)
+ {
+ return consumers.contains (ic);
+ }
+
+ public void removeConsumer (ImageConsumer ic)
+ {
+ consumers.removeElement (ic);
+ }
+
+ public void startProduction (ImageConsumer ic)
+ {
+ addConsumer (ic);
+ Vector list = (Vector) consumers.clone ();
+ try
+ {
+ FileInputStream is = (url == null) ? new FileInputStream (filename) :
+ (FileInputStream) url.openStream();
+
+ produce (list, is);
+ }
+ catch (Exception e)
+ {
+ for (int i = 0; i < list.size (); i++)
+ {
+ ImageConsumer ic2 = (ImageConsumer) list.elementAt (i);
+ ic2.imageComplete (ImageConsumer.IMAGEERROR);
+ }
+ }
+ }
+
+ public void requestTopDownLeftRightResend (ImageConsumer ic)
+ {
+ }
+
+ abstract void produce (Vector v, FileInputStream is) throws IOException;
+}
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