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1: /* GraphicsConfiguration.java -- describes characteristics of graphics 2: Copyright (C) 2000, 2001, 2002 Free Software Foundation 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: import gnu.classpath.NotImplementedException; 42: 43: import java.awt.geom.AffineTransform; 44: import java.awt.image.BufferedImage; 45: import java.awt.image.ColorModel; 46: import java.awt.image.VolatileImage; 47: 48: /** 49: * This class describes the configuration of various graphics devices, such 50: * as a monitor or printer. Different configurations may exist for the same 51: * device, according to the different native modes supported. 52: * 53: * <p>Virtual devices are supported (for example, in a multiple screen 54: * environment, a virtual device covers all screens simultaneously); the 55: * configuration will have a non-zero relative coordinate system in such 56: * a case. 57: * 58: * @author Eric Blake (ebb9@email.byu.edu) 59: * @see Window 60: * @see Frame 61: * @see GraphicsEnvironment 62: * @see GraphicsDevice 63: * @since 1.0 64: * @status updated to 1.4 65: */ 66: public abstract class GraphicsConfiguration 67: { 68: /** 69: * The default constructor. 70: * 71: * @see GraphicsDevice#getConfigurations() 72: * @see GraphicsDevice#getDefaultConfiguration() 73: * @see GraphicsDevice#getBestConfiguration(GraphicsConfigTemplate) 74: * @see Graphics2D#getDeviceConfiguration() 75: */ 76: protected GraphicsConfiguration () 77: { 78: } 79: 80: /** 81: * Gets the associated device that this configuration describes. 82: * 83: * @return the device 84: */ 85: public abstract GraphicsDevice getDevice(); 86: 87: /** 88: * Returns a buffered image optimized to this device, so that blitting can 89: * be supported in the buffered image. 90: * 91: * @param w the width of the buffer 92: * @param h the height of the buffer 93: * @return the buffered image, or null if none is supported 94: */ 95: public abstract BufferedImage createCompatibleImage(int w, int h); 96: 97: /** 98: * Returns a buffered volatile image optimized to this device, so that 99: * blitting can be supported in the buffered image. Because the buffer is 100: * volatile, it can be optimized by native graphics accelerators. 101: * 102: * @param w the width of the buffer 103: * @param h the height of the buffer 104: * @return the buffered image, or null if none is supported 105: * @see Component#createVolatileImage(int, int) 106: * @since 1.4 107: */ 108: public abstract VolatileImage createCompatibleVolatileImage(int w, int h); 109: 110: /** 111: * Returns a buffered volatile image optimized to this device, and with the 112: * given capabilities, so that blitting can be supported in the buffered 113: * image. Because the buffer is volatile, it can be optimized by native 114: * graphics accelerators. 115: * 116: * @param w the width of the buffer 117: * @param h the height of the buffer 118: * @param caps the desired capabilities of the image buffer 119: * @return the buffered image, or null if none is supported 120: * @throws AWTException if the capabilities cannot be met 121: * @since 1.4 122: */ 123: public VolatileImage createCompatibleVolatileImage(int w, int h, 124: ImageCapabilities caps) 125: throws AWTException 126: { 127: throw new AWTException("not implemented"); 128: } 129: 130: /** 131: * Returns a buffered volatile image optimized to this device, and 132: * with the given transparency. Because the buffer is volatile, it 133: * can be optimized by native graphics accelerators. 134: * 135: * @param width the width of the buffer 136: * @param height the height of the buffer 137: * @param transparency the transparency value for the buffer 138: * @return the buffered image, or null if none is supported 139: * @since 1.5 140: */ 141: public abstract VolatileImage createCompatibleVolatileImage(int width, 142: int height, 143: int transparency); 144: 145: /** 146: * Returns a buffered image optimized to this device, and with the specified 147: * transparency, so that blitting can be supported in the buffered image. 148: * 149: * @param w the width of the buffer 150: * @param h the height of the buffer 151: * @param transparency the transparency of the buffer 152: * @return the buffered image, or null if none is supported 153: * @see Transparency#OPAQUE 154: * @see Transparency#BITMASK 155: * @see Transparency#TRANSLUCENT 156: */ 157: public abstract BufferedImage createCompatibleImage(int w, int h, 158: int transparency); 159: 160: /** 161: * Gets the color model of the corresponding device. 162: * 163: * @return the color model 164: */ 165: public abstract ColorModel getColorModel(); 166: 167: /** 168: * Gets a color model for the corresponding device which supports the desired 169: * transparency level. 170: * 171: * @param transparency the transparency of the model 172: * @return the color model, with transparency 173: * @see Transparency#OPAQUE 174: * @see Transparency#BITMASK 175: * @see Transparency#TRANSLUCENT 176: */ 177: public abstract ColorModel getColorModel(int transparency); 178: 179: /** 180: * Returns a transform that maps user coordinates to device coordinates. The 181: * preferred mapping is about 72 user units to 1 inch (2.54 cm) of physical 182: * space. This is often the identity transform. The device coordinates have 183: * the origin at the upper left, with increasing x to the right, and 184: * increasing y to the bottom. 185: * 186: * @return the transformation from user space to device space 187: * @see #getNormalizingTransform() 188: */ 189: public abstract AffineTransform getDefaultTransform(); 190: 191: /** 192: * Returns a transform that maps user coordinates to device coordinates. The 193: * exact mapping is 72 user units to 1 inch (2.54 cm) of physical space. 194: * This is often the identity transform. The device coordinates have the 195: * origin at the upper left, with increasing x to the right, and increasing 196: * y to the bottom. Note that this is more accurate (and thus, sometimes more 197: * costly) than the default transform. 198: * 199: * @return the normalized transformation from user space to device space 200: * @see #getDefaultTransform() 201: */ 202: public abstract AffineTransform getNormalizingTransform(); 203: 204: /** 205: * Returns the bounds of the configuration, in device coordinates. If this 206: * is a virtual device (for example, encompassing several screens), the 207: * bounds may have a non-zero origin. 208: * 209: * @return the device bounds 210: * @since 1.3 211: */ 212: public abstract Rectangle getBounds(); 213: 214: /** 215: * Returns the buffering capabilities of this configuration. 216: * 217: * @return the buffer capabilities 218: * @since 1.4 219: */ 220: public BufferCapabilities getBufferCapabilities() 221: throws NotImplementedException 222: { 223: throw new Error("not implemented"); 224: } 225: 226: /** 227: * Returns the imaging capabilities of this configuration. 228: * 229: * @return the image capabilities 230: * @since 1.4 231: */ 232: public ImageCapabilities getImageCapabilities() 233: throws NotImplementedException 234: { 235: throw new Error("not implemented"); 236: } 237: } // class GraphicsConfiguration
GNU Classpath (0.91) |