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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/image/ImageObserver.java | |
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Diffstat (limited to 'libjava/classpath/java/awt/image/ImageObserver.java')
-rw-r--r-- | libjava/classpath/java/awt/image/ImageObserver.java | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/image/ImageObserver.java b/libjava/classpath/java/awt/image/ImageObserver.java new file mode 100644 index 000000000..e63d4bba1 --- /dev/null +++ b/libjava/classpath/java/awt/image/ImageObserver.java @@ -0,0 +1,129 @@ +/* ImageObserver.java -- Java interface for asynchronous updates to an image + 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; + +import java.awt.Image; + +/** + * An object implementing the <code>ImageObserver</code> interface can + * receive updates on image construction from an + * <code>ImageProducer</code> asynchronously. + * + * @see ImageProducer + * @author C. Brian Jones (cbj@gnu.org) + */ +public interface ImageObserver +{ + /** + * The width of the image has been provided as the + * <code>width</code> argument to <code>imageUpdate</code>. + * + * @see #imageUpdate + */ + int WIDTH = 1; + + /** + * The height of the image has been provided as the + * <code>height</code> argument to <code>imageUpdate</code>. + * + * @see #imageUpdate + */ + int HEIGHT = 2; + + /** + * The properties of the image have been provided. + * + * @see #imageUpdate + * @see java.awt.Image#getProperty (java.lang.String, java.awt.image.ImageObserver) + */ + int PROPERTIES = 4; + + /** + * More pixels are now available for drawing a scaled variation of + * the image. + * + * @see #imageUpdate + */ + int SOMEBITS = 8; + + /** + * All the pixels needed to draw a complete frame of a multi-frame + * image are available. + * + * @see #imageUpdate + */ + int FRAMEBITS = 16; + + /** + * An image with a single frame, a static image, is complete. + * + * @see #imageUpdate + */ + int ALLBITS = 32; + + /** + * An error was encountered while producing the image. + * + * @see #imageUpdate + */ + int ERROR = 64; + + /** + * Production of the image was aborted. + * + * @see #imageUpdate + */ + int ABORT = 128; + + /** + * This is a callback method for an asynchronous image producer to + * provide updates on the production of the image as it happens. + * + * @param image the image the update refers to + * @param flags a bit mask indicating what is provided with this update + * @param x the x coordinate of the image + * @param y the y coordinate of the image + * @param width the width of the image + * @param height the height of the image + * + * @see java.awt.Image + */ + boolean imageUpdate(Image image, int flags, int x, + int y, int width, int height); +} |