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 */ ImageCapabilities(boolean accelerated)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 */ isAccelerated()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 */ isTrueVolatile()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 */ clone()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 } 108