122 lines
3.6 KiB
Java
122 lines
3.6 KiB
Java
/* BufferCapabilities.java --
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt;
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/**
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* Needs documentation...
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*
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* @author Eric Blake <ebb9@email.byu.edu>
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* @see BufferStrategy#getCapabilities()
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* @see GraphicsConfiguration#getCapabilities()
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* @since 1.4
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* @status updated to 1.4, lacks documentation
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*/
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public class BufferCapabilities implements Cloneable
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{
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public static final class FlipContents extends AttributeValue
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{
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private static final String[] NAMES
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= { "undefined", "background", "prior", "copied" };
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public static final FlipContents UNDEFINED = new FlipContents(0);
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public static final FlipContents BACKGROUND = new FlipContents(1);
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public static final FlipContents PRIOR = new FlipContents(2);
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public static final FlipContents COPIED = new FlipContents(3);
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private FlipContents(int value)
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{
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super(value, NAMES);
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}
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} // class FlipContents
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private final ImageCapabilities front;
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private final ImageCapabilities back;
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private final FlipContents flip;
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public BufferCapabilities(ImageCapabilities front, ImageCapabilities back,
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FlipContents flip)
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{
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this.front = front;
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this.back = back;
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this.flip = flip;
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if (front == null || back == null)
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throw new IllegalArgumentException();
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}
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public ImageCapabilities getFrontBufferCapabilities()
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{
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return front;
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}
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public ImageCapabilities getBackBufferCapabilities()
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{
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return back;
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}
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public boolean isPageFlipping()
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{
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return flip != null;
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}
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public FlipContents getFlipContents()
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{
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return flip;
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}
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public boolean isFullScreenRequired()
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{
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return true;
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}
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public boolean isMultiBufferAvailable()
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{
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return false;
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}
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public Object clone()
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{
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try
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{
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return super.clone();
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}
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catch (CloneNotSupportedException e)
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{
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throw (Error) new InternalError().initCause(e); // Impossible
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}
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}
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} // class BufferCapabilities
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