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-rw-r--r--libjava/java/awt/image/ImageProducer.java87
1 files changed, 77 insertions, 10 deletions
diff --git a/libjava/java/awt/image/ImageProducer.java b/libjava/java/awt/image/ImageProducer.java
index c8cfe12b807..1bc1736a3a7 100644
--- a/libjava/java/awt/image/ImageProducer.java
+++ b/libjava/java/awt/image/ImageProducer.java
@@ -1,18 +1,85 @@
-/* Copyright (C) 2000 Free Software Foundation
+/* ImageProducer.java -- Java interface for image production
+ Copyright (C) 1999 Free Software Foundation, Inc.
- This file is part of libgcj.
+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. */
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
package java.awt.image;
+/**
+ * An object implementing the <code>ImageProducer</code> interface can
+ * produce data for images. Each image has a corresponding
+ * <code>ImageProducer</code> which is needed for things such as
+ * resizing the image.
+ *
+ * @see ImageConsumer
+ * @author C. Brian Jones (cbj@gnu.org)
+ */
public interface ImageProducer
{
- void addConsumer(ImageConsumer ic);
- boolean isConsumer(ImageConsumer ic);
- void removeConsumer(ImageConsumer ic);
- void startProduction(ImageConsumer ic);
- void requestTopDownLeftRightResend(ImageConsumer ic);
+ /**
+ * Used to register an <code>ImageConsumer</code> with this
+ * <code>ImageProducer</code>.
+ */
+ public abstract void addConsumer(ImageConsumer ic);
+
+ /**
+ * Used to determine if the given <code>ImageConsumer</code> is
+ * already registered with this <code>ImageProducer</code>.
+ */
+ public abstract boolean isConsumer(ImageConsumer ic);
+
+ /**
+ * Used to remove an <code>ImageConsumer</code> from the list of
+ * registered consumers for this <code>ImageProducer</code>.
+ */
+ public abstract void removeConsumer(ImageConsumer ic);
+
+ /**
+ * Used to register an <code>ImageConsumer</code> with this
+ * <code>ImageProducer</code> and then immediately start
+ * reconstruction of the image data to be delivered to all
+ * registered consumers.
+ */
+ public abstract void startProduction(ImageConsumer ic);
+
+ /**
+ * Used to register an <code>ImageConsumer</code> with this
+ * <code>ImageProducer</code> and then request that this producer
+ * resend the image data in the order top-down, left-right.
+ */
+ public abstract void requestTopDownLeftRightResend(ImageConsumer ic);
}
+
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