Source for java.awt.ImageCapabilities

   1: /* ImageCapabilities.java -- the capabilities of an image buffer
   2:    Copyright (C) 2002, 2005 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.awt;
  40: 
  41: /**
  42:  * This class represents the capabilities of an image buffer.  An
  43:  * image buffer may be backed by accelerated graphics resources.
  44:  * Those resources may or may not be volatile.  This class is used to
  45:  * describe these image buffer characteristics.
  46:  */
  47: public class ImageCapabilities implements Cloneable
  48: {
  49:   /**
  50:    * Whether or not this the image buffer uses accelerated graphics
  51:    * resources.
  52:    */
  53:   private final boolean accelerated;
  54: 
  55:   /**
  56:    * Create a new image capability descriptor.
  57:    *
  58:    * @param accelerated true if the image buffer uses accelerated
  59:    * graphics resources
  60:    */
  61:   public ImageCapabilities(boolean accelerated)
  62:   {
  63:     this.accelerated = accelerated;
  64:   }
  65: 
  66:   /**
  67:    * Returns whether or not the image buffer uses accelerated graphics
  68:    * resources.
  69:    *
  70:    * @return true if the image buffer uses accelerated graphics
  71:    * resources; false otherwise
  72:    */
  73:   public boolean isAccelerated()
  74:   {
  75:     return accelerated;
  76:   }
  77: 
  78:   /**
  79:    * Returns whether or not the image buffer's resources are volatile,
  80:    * meaning that they can be reclaimed by the graphics system at any
  81:    * time.
  82:    *
  83:    * @return true if the image buffer's resources are volatile; false
  84:    * otherwise
  85:    */
  86:   public boolean isTrueVolatile()
  87:   {
  88:     return true;
  89:   }
  90: 
  91:   /**
  92:    * Clone this image capability descriptor.
  93:    *
  94:    * @return a clone of this image capability descriptor
  95:    */
  96:   public Object clone()
  97:   {
  98:     try
  99:       {
 100:         return super.clone();
 101:       }
 102:     catch (CloneNotSupportedException e)
 103:       {
 104:         throw (Error) new InternalError().initCause(e);
 105:       }
 106:   }
 107: }