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Diffstat (limited to 'libjava/classpath/java/awt/Image.java')
| -rw-r--r-- | libjava/classpath/java/awt/Image.java | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/libjava/classpath/java/awt/Image.java b/libjava/classpath/java/awt/Image.java deleted file mode 100644 index 7b2cee7..0000000 --- a/libjava/classpath/java/awt/Image.java +++ /dev/null @@ -1,242 +0,0 @@ -/* Image.java -- superclass for images - Copyright (C) 1999, 2002, 2004, 2005, 2006 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; - -import java.awt.image.AreaAveragingScaleFilter; -import java.awt.image.FilteredImageSource; -import java.awt.image.ImageFilter; -import java.awt.image.ImageObserver; -import java.awt.image.ImageProducer; -import java.awt.image.ReplicateScaleFilter; - -/** - * This is the abstract superclass of all image objects in Java. - * - * @author Aaron M. Renn (arenn@urbanophile.com) - * @since 1.0 - * @status updated to 1.5 - */ -public abstract class Image -{ - /** - * This variable is returned whenever a property that is not defined - * is requested. - */ - // For debug purposes, this might as well be a unique string. - public static final Object UndefinedProperty - = new String("undefined property"); - - /** - * Constant indicating that the default scaling algorithm should be used. - * - * @since 1.1 - */ - public static final int SCALE_DEFAULT = 1; - - /** - * Constant indicating that a fast scaling algorithm should be used. - * - * @since 1.1 - */ - public static final int SCALE_FAST = 2; - - /** - * Constant indicating that a smooth scaling algorithm should be used. - * - * @since 1.1 - */ - public static final int SCALE_SMOOTH = 4; - - /** - * Constant indicating that the <code>ReplicateScaleFilter</code> class - * algorithm should be used for scaling. - * - * @see ReplicateScaleFilter - * @since 1.1 - */ - public static final int SCALE_REPLICATE = 8; - - /** - * Constant indicating that the area averaging scaling algorithm should be - * used. - * - * @see java.awt.image.AreaAveragingScaleFilter - * @since 1.1 - */ - public static final int SCALE_AREA_AVERAGING = 16; - - /** - * The acceleration priority of the image - * @since 1.5 - */ - protected float accelerationPriority; - - /** - * A default constructor for subclasses. - */ - public Image() - { - } - - /** - * Returns the width of the image, or -1 if it is unknown. If the - * image width is unknown, the observer object will be notified when - * the value is known. - * - * @param observer the image observer for this object - * @return the width in pixels - * @see #getHeight(ImageObserver) - */ - public abstract int getWidth(ImageObserver observer); - - /** - * Returns the height of the image, or -1 if it is unknown. If the - * image height is unknown, the observer object will be notified when - * the value is known. - * - * @param observer the image observer for this object - * @return the height in pixels - * @see #getWidth(ImageObserver) - */ - public abstract int getHeight(ImageObserver observer); - - /** - * Returns the image producer object for this object. The producer is the - * object which generates pixels for this image. - * - * @return the image producer for this object - */ - public abstract ImageProducer getSource(); - - /** - * Returns a graphics context object for drawing an off-screen object. - * This method is only valid for off-screen objects. - * - * @return a graphics context object for an off-screen object - */ - public abstract Graphics getGraphics(); - - /** - * This method requests a named property for an object. The value of the - * property is returned. The value <code>UndefinedProperty</code> is - * returned if there is no property with the specified name. The value - * <code>null</code> is returned if the properties for the object are - * not yet known. In this case, the specified image observer is notified - * when the properties are known. - * - * @param name the requested property name - * @param observer the image observer for this object - * @return the named property, if available - * @see #UndefinedProperty - */ - public abstract Object getProperty(String name, ImageObserver observer); - - /** - * Scales the image to the requested dimension. A new Image with asynchronous - * loading will be produced according to the hints of the algorithm - * requested. If either the width or height is non-positive, it is adjusted - * to preserve the original aspect ratio. - * If an illegal value of <code>flags</code> is passed, - * the default algorithm is used. - * - * @param width the width of the scaled image - * @param height the height of the scaled image - * @param flags a value indicating the algorithm to use - * @return the scaled <code>Image</code> object - * @see #SCALE_DEFAULT - * @see #SCALE_FAST - * @see #SCALE_SMOOTH - * @see #SCALE_REPLICATE - * @see #SCALE_AREA_AVERAGING - * @since 1.1 - */ - public Image getScaledInstance(int width, int height, int flags) - { - ImageFilter filter; - switch (flags) - { - case SCALE_AREA_AVERAGING: - case SCALE_SMOOTH: - filter = new AreaAveragingScaleFilter(width, height); - break; - case SCALE_DEFAULT: - case SCALE_FAST: - case SCALE_REPLICATE: - default: - filter = new ReplicateScaleFilter(width, height); - } - - ImageProducer producer = new FilteredImageSource(getSource(), filter); - return Toolkit.getDefaultToolkit().createImage(producer); - } - - /** - * Flushes (that is, destroys) any resources used for this image. This - * includes the actual image data. - */ - public abstract void flush(); - - /** - * Sets the acceleration priority of the image. - * This is a value from 0 (lowest) to 1 (highest), which may - * be used as a hint for image acceleration. - * E.g. higher priority images may be stored in video memory. - * @param priority - the priority - * @throws IllegalArgumentException if priority is not >= 0 and <= 1. - * - * @since 1.5 - */ - public void setAccelerationPriority(float priority) - { - if( priority < 0f || priority > 1f) - throw new IllegalArgumentException("Invalid priority value."); - accelerationPriority = priority; - } - - /** - * Returns the acceleration priority of the image. - * - * @see #setAccelerationPriority(float) - * @since 1.5 - */ - public float getAccelerationPriority() - { - return accelerationPriority; - } -} // class Image |