114 lines
3.3 KiB
Java
114 lines
3.3 KiB
Java
/* ImageDecoder.java
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Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.awt.image;
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import java.awt.*;
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import java.awt.image.*;
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import java.util.*;
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import java.io.*;
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import java.net.URL;
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public abstract class ImageDecoder implements ImageProducer
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{
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Vector consumers = new Vector ();
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String filename;
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URL url;
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public static ColorModel cm;
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static
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{
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// FIXME: there was some broken code here that looked like
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// it wanted to rely on this property. I don't have any idea
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// what it was intended to do.
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// String endian = System.getProperties ().getProperty ("gnu.cpu.endian");
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}
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public ImageDecoder (String filename)
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{
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this.filename = filename;
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}
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public ImageDecoder (URL url)
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{
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this.url = url;
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}
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public void addConsumer (ImageConsumer ic)
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{
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consumers.addElement (ic);
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}
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public boolean isConsumer (ImageConsumer ic)
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{
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return consumers.contains (ic);
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}
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public void removeConsumer (ImageConsumer ic)
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{
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consumers.removeElement (ic);
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}
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public void startProduction (ImageConsumer ic)
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{
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addConsumer (ic);
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Vector list = (Vector) consumers.clone ();
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try
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{
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FileInputStream is = (url == null) ? new FileInputStream (filename) :
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(FileInputStream) url.openStream();
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produce (list, is);
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}
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catch (Exception e)
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{
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for (int i = 0; i < list.size (); i++)
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{
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ImageConsumer ic2 = (ImageConsumer) list.elementAt (i);
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ic2.imageComplete (ImageConsumer.IMAGEERROR);
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}
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}
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}
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public void requestTopDownLeftRightResend (ImageConsumer ic)
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{
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}
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abstract void produce (Vector v, FileInputStream is) throws IOException;
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}
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