--- /dev/null
+/* 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);
+}
OSDN Git Service
