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Diffstat (limited to 'libjava/classpath/java/awt/image/ImageProducer.java')
-rw-r--r-- | libjava/classpath/java/awt/image/ImageProducer.java | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/image/ImageProducer.java b/libjava/classpath/java/awt/image/ImageProducer.java new file mode 100644 index 000000000..c0f9ad4c7 --- /dev/null +++ b/libjava/classpath/java/awt/image/ImageProducer.java @@ -0,0 +1,84 @@ +/* ImageProducer.java -- Java interface for image production + Copyright (C) 1999 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., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 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 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 +{ + /** + * Used to register an <code>ImageConsumer</code> with this + * <code>ImageProducer</code>. + */ + void addConsumer(ImageConsumer ic); + + /** + * Used to determine if the given <code>ImageConsumer</code> is + * already registered with this <code>ImageProducer</code>. + */ + boolean isConsumer(ImageConsumer ic); + + /** + * Used to remove an <code>ImageConsumer</code> from the list of + * registered consumers for this <code>ImageProducer</code>. + */ + 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. + */ + 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. + */ + void requestTopDownLeftRightResend(ImageConsumer ic); +} |