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1: /* Copyright (C) 2000, 2002, 2003, 2006, Free Software Foundation 2: 3: This file is part of GNU Classpath. 4: 5: GNU Classpath is free software; you can redistribute it and/or modify 6: it under the terms of the GNU General Public License as published by 7: the Free Software Foundation; either version 2, or (at your option) 8: any later version. 9: 10: GNU Classpath is distributed in the hope that it will be useful, but 11: WITHOUT ANY WARRANTY; without even the implied warranty of 12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13: General Public License for more details. 14: 15: You should have received a copy of the GNU General Public License 16: along with GNU Classpath; see the file COPYING. If not, write to the 17: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18: 02110-1301 USA. 19: 20: Linking this library statically or dynamically with other modules is 21: making a combined work based on this library. Thus, the terms and 22: conditions of the GNU General Public License cover the whole 23: combination. 24: 25: As a special exception, the copyright holders of this library give you 26: permission to link this library with independent modules to produce an 27: executable, regardless of the license terms of these independent 28: modules, and to copy and distribute the resulting executable under 29: terms of your choice, provided that you also meet, for each linked 30: independent module, the terms and conditions of the license of that 31: module. An independent module is a module which is not derived from 32: or based on this library. If you modify this library, you may extend 33: this exception to your version of the library, but you are not 34: obligated to do so. If you do not wish to do so, delete this 35: exception statement from your version. */ 36: 37: 38: package java.awt.image; 39: 40: import java.awt.Point; 41: import java.awt.Rectangle; 42: 43: /** 44: * A raster with methods to support updating pixel values. 45: * 46: * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) 47: */ 48: public class WritableRaster extends Raster 49: { 50: /** 51: * Creates a new <code>WritableRaster</code>. 52: * 53: * @param sampleModel the sample model. 54: * @param origin the origin. 55: */ 56: protected WritableRaster(SampleModel sampleModel, Point origin) 57: { 58: this(sampleModel, sampleModel.createDataBuffer(), origin); 59: } 60: 61: /** 62: * Creates a new <code>WritableRaster</code> instance. 63: * 64: * @param sampleModel the sample model. 65: * @param dataBuffer the data buffer. 66: * @param origin the origin. 67: */ 68: protected WritableRaster(SampleModel sampleModel, DataBuffer dataBuffer, 69: Point origin) 70: { 71: this(sampleModel, dataBuffer, 72: new Rectangle(origin != null ? origin.x : 0, 73: origin != null ? origin.y : 0, 74: sampleModel.getWidth(), sampleModel.getHeight()), 75: origin, null); 76: } 77: 78: /** 79: * Creates a new <code>WritableRaster</code> instance. 80: * 81: * @param sampleModel the sample model. 82: * @param dataBuffer the data buffer. 83: * @param aRegion the raster's bounds. 84: * @param sampleModelTranslate the translation. 85: * @param parent the parent. 86: */ 87: protected WritableRaster(SampleModel sampleModel, 88: DataBuffer dataBuffer, 89: Rectangle aRegion, 90: Point sampleModelTranslate, 91: WritableRaster parent) 92: { 93: super(sampleModel, dataBuffer, aRegion, sampleModelTranslate, parent); 94: } 95: 96: /** 97: * Returns the raster's parent, cast as a {@link WritableRaster}. 98: * 99: * @return The raster's parent. 100: */ 101: public WritableRaster getWritableParent() 102: { 103: return (WritableRaster) getParent(); 104: } 105: 106: /** 107: * @param childMinX 108: * @param childMinY 109: * @return 110: */ 111: public WritableRaster createWritableTranslatedChild(int childMinX, 112: int childMinY) 113: { 114: return createWritableChild(minX, minY, width, height, 115: childMinX, childMinY, null); 116: } 117: 118: /** 119: * 120: * @param parentX 121: * @param parentY 122: * @param w 123: * @param h 124: * @param childMinX 125: * @param childMinY 126: * @param bandList 127: * @return 128: */ 129: public WritableRaster createWritableChild(int parentX, int parentY, 130: int w, int h, int childMinX, int childMinY, int[] bandList) 131: { 132: // This mirrors the code from the super class 133: 134: if (parentX < minX || parentX + w > minX + width 135: || parentY < minY || parentY + h > minY + height) 136: throw new RasterFormatException("Child raster extends beyond parent"); 137: 138: SampleModel sm = (bandList == null) ? 139: sampleModel : 140: sampleModel.createSubsetSampleModel(bandList); 141: 142: return new WritableRaster(sm, getDataBuffer(), 143: new Rectangle(childMinX, childMinY, w, h), 144: new Point(sampleModelTranslateX + childMinX - 145: parentX, 146: sampleModelTranslateY + childMinY - 147: parentY), 148: this); 149: } 150: 151: public Raster createChild(int parentX, int parentY, int width, 152: int height, int childMinX, int childMinY, 153: int[] bandList) 154: { 155: if (parentX < minX || parentX + width > minX + this.width 156: || parentY < minY || parentY + height > minY + this.height) 157: throw new RasterFormatException("Child raster extends beyond parent"); 158: 159: SampleModel sm = (bandList == null) ? 160: sampleModel : 161: sampleModel.createSubsetSampleModel(bandList); 162: 163: return new WritableRaster(sm, dataBuffer, 164: new Rectangle(childMinX, childMinY, width, height), 165: new Point(sampleModelTranslateX + childMinX - parentX, 166: sampleModelTranslateY + childMinY - parentY), 167: this); 168: } 169: 170: public void setDataElements(int x, int y, Object inData) 171: { 172: sampleModel.setDataElements(x - sampleModelTranslateX, 173: y - sampleModelTranslateY, inData, dataBuffer); 174: } 175: 176: public void setDataElements(int x, int y, Raster inRaster) 177: { 178: Object dataElements = getDataElements(0, 0, inRaster.getWidth(), 179: inRaster.getHeight(), null); 180: setDataElements(x, y, dataElements); 181: } 182: 183: public void setDataElements(int x, int y, int w, int h, Object inData) 184: { 185: sampleModel.setDataElements(x - sampleModelTranslateX, 186: y - sampleModelTranslateY, w, h, inData, dataBuffer); 187: } 188: 189: /** 190: * 191: * @param srcRaster 192: */ 193: public void setRect(Raster srcRaster) 194: { 195: setRect(0, 0, srcRaster); 196: } 197: 198: /** 199: * 200: * @param dx 201: * @param dy 202: * @param srcRaster 203: */ 204: public void setRect(int dx, int dy, Raster srcRaster) 205: { 206: Rectangle targetUnclipped = new Rectangle(srcRaster.getMinX() + dx, 207: srcRaster.getMinY() + dy, srcRaster.getWidth(), srcRaster.getHeight()); 208: 209: Rectangle target = getBounds().intersection(targetUnclipped); 210: 211: if (target.isEmpty()) return; 212: 213: int sx = target.x - dx; 214: int sy = target.y - dy; 215: 216: // FIXME: Do tests on rasters and use get/set data instead. 217: 218: /* The JDK documentation seems to imply this implementation. 219: (the trucation of higher bits), but an implementation using 220: get/setDataElements would be more efficient. None of the 221: implementations would do anything sensible when the sample 222: models don't match. 223: 224: But this is probably not the place to consider such 225: optimizations.*/ 226: 227: int[] pixels = srcRaster.getPixels(sx, sy, target.width, target.height, 228: (int[]) null); 229: 230: setPixels(target.x, target.y, target.width, target.height, pixels); 231: } 232: 233: /** 234: * Sets the samples for the pixel at (x, y) in the raster to the specified 235: * values. 236: * 237: * @param x the x-coordinate of the pixel. 238: * @param y the y-coordinate of the pixel. 239: * @param iArray the sample values (<code>null</code> not permitted). 240: * 241: * @throws NullPointerException if <code>iArray</code> is <code>null</code>. 242: */ 243: public void setPixel(int x, int y, int[] iArray) 244: { 245: sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, 246: iArray, dataBuffer); 247: } 248: 249: /** 250: * Sets the samples for the pixel at (x, y) in the raster to the specified 251: * values. 252: * 253: * @param x the x-coordinate of the pixel. 254: * @param y the y-coordinate of the pixel. 255: * @param fArray the sample values (<code>null</code> not permitted). 256: * 257: * @throws NullPointerException if <code>fArray</code> is <code>null</code>. 258: */ 259: public void setPixel(int x, int y, float[] fArray) 260: { 261: sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, 262: fArray, dataBuffer); 263: } 264: 265: /** 266: * Sets the samples for the pixel at (x, y) in the raster to the specified 267: * values. 268: * 269: * @param x the x-coordinate of the pixel. 270: * @param y the y-coordinate of the pixel. 271: * @param dArray the sample values (<code>null</code> not permitted). 272: * 273: * @throws NullPointerException if <code>dArray</code> is <code>null</code>. 274: */ 275: public void setPixel(int x, int y, double[] dArray) 276: { 277: sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, 278: dArray, dataBuffer); 279: } 280: 281: /** 282: * Sets the sample values for the pixels in the region specified by 283: * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all 284: * the samples for the first pixel are grouped together, followed by all the 285: * samples for the second pixel, and so on). 286: * 287: * @param x the x-coordinate of the top-left pixel. 288: * @param y the y-coordinate of the top-left pixel. 289: * @param w the width of the region of pixels. 290: * @param h the height of the region of pixels. 291: * @param iArray the pixel sample values (<code>null</code> not permitted). 292: * 293: * @throws NullPointerException if <code>iArray</code> is <code>null</code>. 294: */ 295: public void setPixels(int x, int y, int w, int h, int[] iArray) 296: { 297: sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, 298: w, h, iArray, dataBuffer); 299: } 300: 301: /** 302: * Sets the sample values for the pixels in the region specified by 303: * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all 304: * the samples for the first pixel are grouped together, followed by all the 305: * samples for the second pixel, and so on). 306: * 307: * @param x the x-coordinate of the top-left pixel. 308: * @param y the y-coordinate of the top-left pixel. 309: * @param w the width of the region of pixels. 310: * @param h the height of the region of pixels. 311: * @param fArray the pixel sample values (<code>null</code> not permitted). 312: * 313: * @throws NullPointerException if <code>fArray</code> is <code>null</code>. 314: */ 315: public void setPixels(int x, int y, int w, int h, float[] fArray) 316: { 317: sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, 318: w, h, fArray, dataBuffer); 319: } 320: 321: /** 322: * Sets the sample values for the pixels in the region specified by 323: * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all 324: * the samples for the first pixel are grouped together, followed by all the 325: * samples for the second pixel, and so on). 326: * 327: * @param x the x-coordinate of the top-left pixel. 328: * @param y the y-coordinate of the top-left pixel. 329: * @param w the width of the region of pixels. 330: * @param h the height of the region of pixels. 331: * @param dArray the pixel sample values (<code>null</code> not permitted). 332: * 333: * @throws NullPointerException if <code>dArray</code> is <code>null</code>. 334: */ 335: public void setPixels(int x, int y, int w, int h, double[] dArray) 336: { 337: sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, 338: w, h, dArray, dataBuffer); 339: } 340: 341: /** 342: * Sets the sample value for a band for the pixel at (x, y) in the raster. 343: * 344: * @param x the x-coordinate of the pixel. 345: * @param y the y-coordinate of the pixel. 346: * @param b the band (in the range <code>0</code> to 347: * <code>getNumBands() - 1</code>). 348: * @param s the sample value. 349: */ 350: public void setSample(int x, int y, int b, int s) 351: { 352: sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, 353: b, s, dataBuffer); 354: } 355: 356: /** 357: * Sets the sample value for a band for the pixel at (x, y) in the raster. 358: * 359: * @param x the x-coordinate of the pixel. 360: * @param y the y-coordinate of the pixel. 361: * @param b the band (in the range <code>0</code> to 362: * <code>getNumBands() - 1</code>). 363: * @param s the sample value. 364: */ 365: public void setSample(int x, int y, int b, float s) 366: { 367: sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, 368: b, s, dataBuffer); 369: } 370: 371: /** 372: * Sets the sample value for a band for the pixel at (x, y) in the raster. 373: * 374: * @param x the x-coordinate of the pixel. 375: * @param y the y-coordinate of the pixel. 376: * @param b the band (in the range <code>0</code> to 377: * <code>getNumBands() - 1</code>). 378: * @param s the sample value. 379: */ 380: public void setSample(int x, int y, int b, double s) 381: { 382: sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, 383: b, s, dataBuffer); 384: } 385: 386: /** 387: * Sets the sample values for one band for the pixels in the region 388: * specified by (x, y, w, h) in the raster. 389: * 390: * @param x the x-coordinate of the top-left pixel. 391: * @param y the y-coordinate of the top-left pixel. 392: * @param w the width of the region of pixels. 393: * @param h the height of the region of pixels. 394: * @param b the band (in the range <code>0</code> to 395: * </code>getNumBands() - 1</code>). 396: * @param iArray the sample values (<code>null</code> not permitted). 397: * 398: * @throws NullPointerException if <code>iArray</code> is <code>null</code>. 399: */ 400: public void setSamples(int x, int y, int w, int h, int b, 401: int[] iArray) 402: { 403: sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, 404: w, h, b, iArray, dataBuffer); 405: } 406: 407: /** 408: * Sets the sample values for one band for the pixels in the region 409: * specified by (x, y, w, h) in the raster. 410: * 411: * @param x the x-coordinate of the top-left pixel. 412: * @param y the y-coordinate of the top-left pixel. 413: * @param w the width of the region of pixels. 414: * @param h the height of the region of pixels. 415: * @param b the band (in the range <code>0</code> to 416: * </code>getNumBands() - 1</code>). 417: * @param fArray the sample values (<code>null</code> not permitted). 418: * 419: * @throws NullPointerException if <code>fArray</code> is <code>null</code>. 420: */ 421: public void setSamples(int x, int y, int w, int h, int b, 422: float[] fArray) 423: { 424: sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, 425: w, h, b, fArray, dataBuffer); 426: } 427: 428: /** 429: * Sets the sample values for one band for the pixels in the region 430: * specified by (x, y, w, h) in the raster. 431: * 432: * @param x the x-coordinate of the top-left pixel. 433: * @param y the y-coordinate of the top-left pixel. 434: * @param w the width of the region of pixels. 435: * @param h the height of the region of pixels. 436: * @param b the band (in the range <code>0</code> to 437: * </code>getNumBands() - 1</code>). 438: * @param dArray the sample values (<code>null</code> not permitted). 439: * 440: * @throws NullPointerException if <code>dArray</code> is <code>null</code>. 441: */ 442: public void setSamples(int x, int y, int w, int h, int b, 443: double[] dArray) 444: { 445: sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, 446: w, h, b, dArray, dataBuffer); 447: } 448: }