Mercurial > projects > dwt-linux
annotate dwt/graphics/ImageData.d @ 54:8f049b136add
first example working
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Fri, 11 Jan 2008 14:31:37 +0100 |
| parents | fc2b263b8a3f |
| children | 93981635e709 |
| rev | line source |
|---|---|
| 5 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2007 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 *******************************************************************************/ | |
|
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11 module dwt.graphics.ImageData; |
| 5 | 12 |
| 13 | |
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14 import dwt.graphics.PaletteData; |
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15 import dwt.graphics.RGB; |
| 18 | 16 import dwt.graphics.Image; |
| 17 import dwt.graphics.GC; | |
| 18 import dwt.graphics.Device; | |
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19 import dwt.graphics.ImageDataLoader; |
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20 import dwt.SWT; |
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21 import dwt.internal.CloneableCompatibility; |
| 5 | 22 |
| 12 | 23 public import dwt.dwthelper.InputStream; |
| 5 | 24 |
| 25 | |
| 26 /** | |
| 27 * Instances of this class are device-independent descriptions | |
| 28 * of images. They are typically used as an intermediate format | |
| 29 * between loading from or writing to streams and creating an | |
| 30 * <code>Image</code>. | |
| 31 * <p> | |
| 32 * Note that the public fields <code>x</code>, <code>y</code>, | |
| 33 * <code>disposalMethod</code> and <code>delayTime</code> are | |
| 34 * typically only used when the image is in a set of images used | |
| 35 * for animation. | |
| 36 * </p> | |
| 37 * | |
| 38 * @see Image | |
| 39 * @see ImageLoader | |
| 40 */ | |
| 41 | |
| 42 public final class ImageData : CloneableCompatibility { | |
| 43 | |
| 44 /** | |
| 45 * The width of the image, in pixels. | |
| 46 */ | |
| 47 public int width; | |
| 48 | |
| 49 /** | |
| 50 * The height of the image, in pixels. | |
| 51 */ | |
| 52 public int height; | |
| 53 | |
| 54 /** | |
| 55 * The color depth of the image, in bits per pixel. | |
| 56 * <p> | |
| 57 * Note that a depth of 8 or less does not necessarily | |
| 58 * mean that the image is palette indexed, or | |
| 59 * conversely that a depth greater than 8 means that | |
| 60 * the image is direct color. Check the associated | |
| 61 * PaletteData's isDirect field for such determinations. | |
| 62 */ | |
| 63 public int depth; | |
| 64 | |
| 65 /** | |
| 66 * The scanline padding. | |
| 67 * <p> | |
| 68 * If one scanline of the image is not a multiple of | |
| 69 * this number, it will be padded with zeros until it is. | |
| 70 * </p> | |
| 71 */ | |
| 72 public int scanlinePad; | |
| 73 | |
| 74 /** | |
| 75 * The number of bytes per scanline. | |
| 76 * <p> | |
| 77 * This is a multiple of the scanline padding. | |
| 78 * </p> | |
| 79 */ | |
| 80 public int bytesPerLine; | |
| 81 | |
| 82 /** | |
| 83 * The pixel data of the image. | |
| 84 * <p> | |
| 85 * Note that for 16 bit depth images the pixel data is stored | |
| 86 * in least significant byte order; however, for 24bit and | |
| 87 * 32bit depth images the pixel data is stored in most | |
| 88 * significant byte order. | |
| 89 * </p> | |
| 90 */ | |
| 91 public byte[] data; | |
| 92 | |
| 93 /** | |
| 94 * The color table for the image. | |
| 95 */ | |
| 96 public PaletteData palette; | |
| 97 | |
| 98 /** | |
| 99 * The transparent pixel. | |
| 100 * <p> | |
| 101 * Pixels with this value are transparent. | |
| 102 * </p><p> | |
| 103 * The default is -1 which means 'no transparent pixel'. | |
| 104 * </p> | |
| 105 */ | |
| 106 public int transparentPixel; | |
| 107 | |
| 108 /** | |
| 109 * An icon-specific field containing the data from the icon mask. | |
| 110 * <p> | |
| 111 * This is a 1 bit bitmap stored with the most significant | |
| 112 * bit first. The number of bytes per scanline is | |
| 113 * '((width + 7) / 8 + (maskPad - 1)) / maskPad * maskPad'. | |
| 114 * </p><p> | |
| 115 * The default is null which means 'no transparency mask'. | |
| 116 * </p> | |
| 117 */ | |
| 118 public byte[] maskData; | |
| 119 | |
| 120 /** | |
| 121 * An icon-specific field containing the scanline pad of the mask. | |
| 122 * <p> | |
| 123 * If one scanline of the transparency mask is not a | |
| 124 * multiple of this number, it will be padded with zeros until | |
| 125 * it is. | |
| 126 * </p> | |
| 127 */ | |
| 128 public int maskPad; | |
| 129 | |
| 130 /** | |
| 131 * The alpha data of the image. | |
| 132 * <p> | |
| 133 * Every pixel can have an <em>alpha blending</em> value that | |
| 134 * varies from 0, meaning fully transparent, to 255 meaning | |
| 135 * fully opaque. The number of bytes per scanline is | |
| 136 * 'width'. | |
| 137 * </p> | |
| 138 */ | |
| 139 public byte[] alphaData; | |
| 140 | |
| 141 /** | |
| 142 * The global alpha value to be used for every pixel. | |
| 143 * <p> | |
| 144 * If this value is set, the <code>alphaData</code> field | |
| 145 * is ignored and when the image is rendered each pixel | |
| 146 * will be blended with the background an amount | |
| 147 * proportional to this value. | |
| 148 * </p><p> | |
| 149 * The default is -1 which means 'no global alpha value' | |
| 150 * </p> | |
| 151 */ | |
| 152 public int alpha; | |
| 153 | |
| 154 /** | |
| 155 * The type of file from which the image was read. | |
| 156 * | |
| 157 * It is expressed as one of the following values: | |
| 158 * <dl> | |
| 159 * <dt><code>IMAGE_BMP</code></dt> | |
| 160 * <dd>Windows BMP file format, no compression</dd> | |
| 161 * <dt><code>IMAGE_BMP_RLE</code></dt> | |
| 162 * <dd>Windows BMP file format, RLE compression if appropriate</dd> | |
| 163 * <dt><code>IMAGE_GIF</code></dt> | |
| 164 * <dd>GIF file format</dd> | |
| 165 * <dt><code>IMAGE_ICO</code></dt> | |
| 166 * <dd>Windows ICO file format</dd> | |
| 167 * <dt><code>IMAGE_JPEG</code></dt> | |
| 168 * <dd>JPEG file format</dd> | |
| 169 * <dt><code>IMAGE_PNG</code></dt> | |
| 170 * <dd>PNG file format</dd> | |
| 171 * </dl> | |
| 172 */ | |
| 173 public int type; | |
| 174 | |
| 175 /** | |
| 176 * The x coordinate of the top left corner of the image | |
| 177 * within the logical screen (this field corresponds to | |
| 178 * the GIF89a Image Left Position value). | |
| 179 */ | |
| 180 public int x; | |
| 181 | |
| 182 /** | |
| 183 * The y coordinate of the top left corner of the image | |
| 184 * within the logical screen (this field corresponds to | |
| 185 * the GIF89a Image Top Position value). | |
| 186 */ | |
| 187 public int y; | |
| 188 | |
| 189 /** | |
| 190 * A description of how to dispose of the current image | |
| 191 * before displaying the next. | |
| 192 * | |
| 193 * It is expressed as one of the following values: | |
| 194 * <dl> | |
| 195 * <dt><code>DM_UNSPECIFIED</code></dt> | |
| 196 * <dd>disposal method not specified</dd> | |
| 197 * <dt><code>DM_FILL_NONE</code></dt> | |
| 198 * <dd>do nothing - leave the image in place</dd> | |
| 199 * <dt><code>DM_FILL_BACKGROUND</code></dt> | |
| 200 * <dd>fill with the background color</dd> | |
| 201 * <dt><code>DM_FILL_PREVIOUS</code></dt> | |
| 202 * <dd>restore the previous picture</dd> | |
| 203 * </dl> | |
| 204 * (this field corresponds to the GIF89a Disposal Method value) | |
| 205 */ | |
| 206 public int disposalMethod; | |
| 207 | |
| 208 /** | |
| 209 * The time to delay before displaying the next image | |
| 210 * in an animation (this field corresponds to the GIF89a | |
| 211 * Delay Time value). | |
| 212 */ | |
| 213 public int delayTime; | |
| 214 | |
| 215 /** | |
| 216 * Arbitrary channel width data to 8-bit conversion table. | |
| 217 */ | |
| 54 | 218 static byte[][] ANY_TO_EIGHT; |
| 219 | |
| 220 synchronized static void static_this() { | |
| 221 ANY_TO_EIGHT = new byte[][](9); | |
| 222 for (int b = 0; b < 9; ++b) { | |
| 223 byte[] data = ANY_TO_EIGHT[b] = new byte[1 << b]; | |
| 224 if (b == 0) continue; | |
| 225 int inc = 0; | |
| 226 for (int bit = 0x10000; (bit >>= b) != 0;) inc |= bit; | |
| 227 for (int v = 0, p = 0; v < 0x10000; v+= inc) data[p++] = cast(byte)(v >> 8); | |
| 228 } | |
| 229 ONE_TO_ONE_MAPPING = ANY_TO_EIGHT[8]; | |
| 5 | 230 } |
| 54 | 231 static byte[] ONE_TO_ONE_MAPPING; |
| 5 | 232 |
| 233 /** | |
| 234 * Scaled 8x8 Bayer dither matrix. | |
| 235 */ | |
| 236 static const int[][] DITHER_MATRIX = [ | |
| 237 [ 0xfc0000, 0x7c0000, 0xdc0000, 0x5c0000, 0xf40000, 0x740000, 0xd40000, 0x540000 ], | |
| 238 [ 0x3c0000, 0xbc0000, 0x1c0000, 0x9c0000, 0x340000, 0xb40000, 0x140000, 0x940000 ], | |
| 239 [ 0xcc0000, 0x4c0000, 0xec0000, 0x6c0000, 0xc40000, 0x440000, 0xe40000, 0x640000 ], | |
| 240 [ 0x0c0000, 0x8c0000, 0x2c0000, 0xac0000, 0x040000, 0x840000, 0x240000, 0xa40000 ], | |
| 241 [ 0xf00000, 0x700000, 0xd00000, 0x500000, 0xf80000, 0x780000, 0xd80000, 0x580000 ], | |
| 242 [ 0x300000, 0xb00000, 0x100000, 0x900000, 0x380000, 0xb80000, 0x180000, 0x980000 ], | |
| 243 [ 0xc00000, 0x400000, 0xe00000, 0x600000, 0xc80000, 0x480000, 0xe80000, 0x680000 ], | |
| 244 [ 0x000000, 0x800000, 0x200000, 0xa00000, 0x080000, 0x880000, 0x280000, 0xa80000 ] | |
| 245 ]; | |
| 246 | |
| 247 /** | |
| 248 * Constructs a new, empty ImageData with the given width, height, | |
| 249 * depth and palette. The data will be initialized to an (all zero) | |
| 250 * array of the appropriate size. | |
| 251 * | |
| 252 * @param width the width of the image | |
| 253 * @param height the height of the image | |
| 254 * @param depth the depth of the image | |
| 255 * @param palette the palette of the image (must not be null) | |
| 256 * | |
| 257 * @exception IllegalArgumentException <ul> | |
| 258 * <li>ERROR_INVALID_ARGUMENT - if the width or height is negative, or if the depth is not | |
| 259 * one of 1, 2, 4, 8, 16, 24 or 32</li> | |
| 260 * <li>ERROR_NULL_ARGUMENT - if the palette is null</li> | |
| 261 * </ul> | |
| 262 */ | |
| 263 public this(int width, int height, int depth, PaletteData palette) { | |
| 264 this(width, height, depth, palette, | |
| 265 4, null, 0, null, | |
| 266 null, -1, -1, SWT.IMAGE_UNDEFINED, | |
| 267 0, 0, 0, 0); | |
| 268 } | |
| 269 | |
| 270 /** | |
| 271 * Constructs a new, empty ImageData with the given width, height, | |
| 272 * depth, palette, scanlinePad and data. | |
| 273 * | |
| 274 * @param width the width of the image | |
| 275 * @param height the height of the image | |
| 276 * @param depth the depth of the image | |
| 277 * @param palette the palette of the image | |
| 278 * @param scanlinePad the padding of each line, in bytes | |
| 279 * @param data the data of the image | |
| 280 * | |
| 281 * @exception IllegalArgumentException <ul> | |
| 282 * <li>ERROR_INVALID_ARGUMENT - if the width or height is negative, or if the depth is not | |
| 283 * one of 1, 2, 4, 8, 16, 24 or 32</li> | |
| 284 * <li>ERROR_NULL_ARGUMENT - if the palette or data is null</li> | |
| 285 * <li>ERROR_CANNOT_BE_ZERO - if the scanlinePad is zero</li> | |
| 286 * </ul> | |
| 287 */ | |
| 288 public this(int width, int height, int depth, PaletteData palette, int scanlinePad, byte[] data) { | |
| 289 this(width, height, depth, palette, | |
| 290 scanlinePad, checkData(data), 0, null, | |
| 291 null, -1, -1, SWT.IMAGE_UNDEFINED, | |
| 292 0, 0, 0, 0); | |
| 293 } | |
| 294 | |
| 295 /** | |
| 296 * Constructs an <code>ImageData</code> loaded from the specified | |
| 297 * input stream. Throws an error if an error occurs while loading | |
| 298 * the image, or if the image has an unsupported type. Application | |
| 299 * code is still responsible for closing the input stream. | |
| 300 * <p> | |
| 301 * This constructor is provided for convenience when loading a single | |
| 302 * image only. If the stream contains multiple images, only the first | |
| 303 * one will be loaded. To load multiple images, use | |
| 304 * <code>ImageLoader.load()</code>. | |
| 305 * </p><p> | |
| 306 * This constructor may be used to load a resource as follows: | |
| 307 * </p> | |
| 308 * <pre> | |
| 309 * static ImageData loadImageData (Class clazz, String string) { | |
| 310 * InputStream stream = clazz.getResourceAsStream (string); | |
| 311 * if (stream == null) return null; | |
| 312 * ImageData imageData = null; | |
| 313 * try { | |
| 314 * imageData = new ImageData (stream); | |
| 315 * } catch (SWTException ex) { | |
| 316 * } finally { | |
| 317 * try { | |
| 318 * stream.close (); | |
| 319 * } catch (IOException ex) {} | |
| 320 * } | |
| 321 * return imageData; | |
| 322 * } | |
| 323 * </pre> | |
| 324 * | |
| 325 * @param stream the input stream to load the image from (must not be null) | |
| 326 * | |
| 327 * @exception IllegalArgumentException <ul> | |
| 328 * <li>ERROR_NULL_ARGUMENT - if the stream is null</li> | |
| 329 * </ul> | |
| 330 * @exception SWTException <ul> | |
| 331 * <li>ERROR_IO - if an IO error occurs while reading from the stream</li> | |
| 332 * <li>ERROR_INVALID_IMAGE - if the image stream contains invalid data</li> | |
| 333 * <li>ERROR_UNSUPPORTED_FORMAT - if the image stream contains an unrecognized format</li> | |
| 334 * </ul> | |
| 335 * | |
| 336 * @see ImageLoader#load(InputStream) | |
| 337 */ | |
| 338 public this(InputStream stream) { | |
| 339 ImageData[] data = ImageDataLoader.load(stream); | |
| 340 if (data.length < 1) SWT.error(SWT.ERROR_INVALID_IMAGE); | |
| 341 ImageData i = data[0]; | |
| 342 setAllFields( | |
| 343 i.width, | |
| 344 i.height, | |
| 345 i.depth, | |
| 346 i.scanlinePad, | |
| 347 i.bytesPerLine, | |
| 348 i.data, | |
| 349 i.palette, | |
| 350 i.transparentPixel, | |
| 351 i.maskData, | |
| 352 i.maskPad, | |
| 353 i.alphaData, | |
| 354 i.alpha, | |
| 355 i.type, | |
| 356 i.x, | |
| 357 i.y, | |
| 358 i.disposalMethod, | |
| 359 i.delayTime); | |
| 360 } | |
| 361 | |
| 362 /** | |
| 363 * Constructs an <code>ImageData</code> loaded from a file with the | |
| 364 * specified name. Throws an error if an error occurs loading the | |
| 365 * image, or if the image has an unsupported type. | |
| 366 * <p> | |
| 367 * This constructor is provided for convenience when loading a single | |
| 368 * image only. If the file contains multiple images, only the first | |
| 369 * one will be loaded. To load multiple images, use | |
| 370 * <code>ImageLoader.load()</code>. | |
| 371 * </p> | |
| 372 * | |
| 373 * @param filename the name of the file to load the image from (must not be null) | |
| 374 * | |
| 375 * @exception IllegalArgumentException <ul> | |
| 376 * <li>ERROR_NULL_ARGUMENT - if the file name is null</li> | |
| 377 * </ul> | |
| 378 * @exception SWTException <ul> | |
| 379 * <li>ERROR_IO - if an IO error occurs while reading from the file</li> | |
| 380 * <li>ERROR_INVALID_IMAGE - if the image file contains invalid data</li> | |
| 381 * <li>ERROR_UNSUPPORTED_FORMAT - if the image file contains an unrecognized format</li> | |
| 382 * </ul> | |
| 383 */ | |
| 384 public this(char[] filename) { | |
| 385 ImageData[] data = ImageDataLoader.load(filename); | |
| 386 if (data.length < 1) SWT.error(SWT.ERROR_INVALID_IMAGE); | |
| 387 ImageData i = data[0]; | |
| 388 setAllFields( | |
| 389 i.width, | |
| 390 i.height, | |
| 391 i.depth, | |
| 392 i.scanlinePad, | |
| 393 i.bytesPerLine, | |
| 394 i.data, | |
| 395 i.palette, | |
| 396 i.transparentPixel, | |
| 397 i.maskData, | |
| 398 i.maskPad, | |
| 399 i.alphaData, | |
| 400 i.alpha, | |
| 401 i.type, | |
| 402 i.x, | |
| 403 i.y, | |
| 404 i.disposalMethod, | |
| 405 i.delayTime); | |
| 406 } | |
| 407 | |
| 408 /** | |
| 409 * Prevents uninitialized instances from being created outside the package. | |
| 410 */ | |
| 411 private this() { | |
| 412 } | |
| 413 | |
| 414 /** | |
| 415 * Constructs an image data by giving values for all non-computable fields. | |
| 416 * <p> | |
| 417 * This method is for internal use, and is not described further. | |
| 418 * </p> | |
| 419 */ | |
| 420 this( | |
| 421 int width, int height, int depth, PaletteData palette, | |
| 422 int scanlinePad, byte[] data, int maskPad, byte[] maskData, | |
| 423 byte[] alphaData, int alpha, int transparentPixel, int type, | |
| 424 int x, int y, int disposalMethod, int delayTime) | |
| 425 { | |
| 426 if (palette == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 427 if (!(depth == 1 || depth == 2 || depth == 4 || depth == 8 | |
| 428 || depth == 16 || depth == 24 || depth == 32)) { | |
| 429 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 430 } | |
| 431 if (width <= 0 || height <= 0) { | |
| 432 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 433 } | |
| 434 if (scanlinePad == 0) SWT.error (SWT.ERROR_CANNOT_BE_ZERO); | |
| 435 | |
| 436 int bytesPerLine = (((width * depth + 7) / 8) + (scanlinePad - 1)) | |
| 437 / scanlinePad * scanlinePad; | |
| 438 setAllFields( | |
| 439 width, | |
| 440 height, | |
| 441 depth, | |
| 442 scanlinePad, | |
| 443 bytesPerLine, | |
| 444 data != null ? data : new byte[bytesPerLine * height], | |
| 445 palette, | |
| 446 transparentPixel, | |
| 447 maskData, | |
| 448 maskPad, | |
| 449 alphaData, | |
| 450 alpha, | |
| 451 type, | |
| 452 x, | |
| 453 y, | |
| 454 disposalMethod, | |
| 455 delayTime); | |
| 456 } | |
| 457 | |
| 458 /** | |
| 459 * Initializes all fields in the receiver. This method must be called | |
| 460 * by all public constructors to ensure that all fields are initialized | |
| 461 * for a new ImageData object. If a new field is added to the class, | |
| 462 * then it must be added to this method. | |
| 463 * <p> | |
| 464 * This method is for internal use, and is not described further. | |
| 465 * </p> | |
| 466 */ | |
| 467 void setAllFields(int width, int height, int depth, int scanlinePad, | |
| 468 int bytesPerLine, byte[] data, PaletteData palette, int transparentPixel, | |
| 469 byte[] maskData, int maskPad, byte[] alphaData, int alpha, | |
| 470 int type, int x, int y, int disposalMethod, int delayTime) { | |
| 471 | |
| 472 this.width = width; | |
| 473 this.height = height; | |
| 474 this.depth = depth; | |
| 475 this.scanlinePad = scanlinePad; | |
| 476 this.bytesPerLine = bytesPerLine; | |
| 477 this.data = data; | |
| 478 this.palette = palette; | |
| 479 this.transparentPixel = transparentPixel; | |
| 480 this.maskData = maskData; | |
| 481 this.maskPad = maskPad; | |
| 482 this.alphaData = alphaData; | |
| 483 this.alpha = alpha; | |
| 484 this.type = type; | |
| 485 this.x = x; | |
| 486 this.y = y; | |
| 487 this.disposalMethod = disposalMethod; | |
| 488 this.delayTime = delayTime; | |
| 489 } | |
| 490 | |
| 491 /** | |
| 492 * Invokes internal SWT functionality to create a new instance of | |
| 493 * this class. | |
| 494 * <p> | |
| 495 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public | |
| 496 * API for <code>ImageData</code>. It is marked public only so that it | |
| 497 * can be shared within the packages provided by SWT. It is subject | |
| 498 * to change without notice, and should never be called from | |
| 499 * application code. | |
| 500 * </p> | |
| 501 * <p> | |
| 502 * This method is for internal use, and is not described further. | |
| 503 * </p> | |
| 504 */ | |
| 505 public static ImageData internal_new( | |
| 506 int width, int height, int depth, PaletteData palette, | |
| 507 int scanlinePad, byte[] data, int maskPad, byte[] maskData, | |
| 508 byte[] alphaData, int alpha, int transparentPixel, int type, | |
| 509 int x, int y, int disposalMethod, int delayTime) | |
| 510 { | |
| 511 return new ImageData( | |
| 512 width, height, depth, palette, scanlinePad, data, maskPad, maskData, | |
| 513 alphaData, alpha, transparentPixel, type, x, y, disposalMethod, delayTime); | |
| 514 } | |
| 515 | |
| 516 ImageData colorMaskImage(int pixel) { | |
| 517 ImageData mask = new ImageData(width, height, 1, bwPalette(), | |
| 518 2, null, 0, null, null, -1, -1, SWT.IMAGE_UNDEFINED, | |
| 519 0, 0, 0, 0); | |
| 520 int[] row = new int[width]; | |
| 521 for (int y = 0; y < height; y++) { | |
| 522 getPixels(0, y, width, row, 0); | |
| 523 for (int i = 0; i < width; i++) { | |
| 524 if (pixel != -1 && row[i] == pixel) { | |
| 525 row[i] = 0; | |
| 526 } else { | |
| 527 row[i] = 1; | |
| 528 } | |
| 529 } | |
| 530 mask.setPixels(0, y, width, row, 0); | |
| 531 } | |
| 532 return mask; | |
| 533 } | |
| 534 | |
| 535 static byte[] checkData(byte [] data) { | |
| 536 if (data == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 537 return data; | |
| 538 } | |
| 539 | |
| 540 /** | |
| 541 * Returns a new instance of the same class as the receiver, | |
| 542 * whose slots have been filled in with <em>copies</em> of | |
| 543 * the values in the slots of the receiver. That is, the | |
| 544 * returned object is a <em>deep copy</em> of the receiver. | |
| 545 * | |
| 546 * @return a copy of the receiver. | |
| 547 */ | |
| 548 public Object clone() { | |
|
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549 byte[] cloneData = new byte[data.length]; |
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550 System.arraycopy(data, 0, cloneData, 0, data.length); |
| 5 | 551 byte[] cloneMaskData = null; |
| 552 if (maskData != null) { | |
|
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553 cloneMaskData = new byte[maskData.length]; |
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554 System.arraycopy(maskData, 0, cloneMaskData, 0, maskData.length); |
| 5 | 555 } |
| 556 byte[] cloneAlphaData = null; | |
| 557 if (alphaData != null) { | |
|
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558 cloneAlphaData = new byte[alphaData.length]; |
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559 System.arraycopy(alphaData, 0, cloneAlphaData, 0, alphaData.length); |
| 5 | 560 } |
| 561 return new ImageData( | |
| 562 width, | |
| 563 height, | |
| 564 depth, | |
| 565 palette, | |
| 566 scanlinePad, | |
| 567 cloneData, | |
| 568 maskPad, | |
| 569 cloneMaskData, | |
| 570 cloneAlphaData, | |
| 571 alpha, | |
| 572 transparentPixel, | |
| 573 type, | |
| 574 x, | |
| 575 y, | |
| 576 disposalMethod, | |
| 577 delayTime); | |
| 578 } | |
| 579 | |
| 580 /** | |
| 581 * Returns the alpha value at offset <code>x</code> in | |
| 582 * scanline <code>y</code> in the receiver's alpha data. | |
| 583 * | |
| 584 * @param x the x coordinate of the pixel to get the alpha value of | |
| 585 * @param y the y coordinate of the pixel to get the alpha value of | |
| 586 * @return the alpha value at the given coordinates | |
| 587 * | |
| 588 * @exception IllegalArgumentException <ul> | |
| 589 * <li>ERROR_INVALID_ARGUMENT - if either argument is out of range</li> | |
| 590 * </ul> | |
| 591 */ | |
| 592 public int getAlpha(int x, int y) { | |
| 593 if (x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 594 | |
| 595 if (alphaData == null) return 255; | |
| 596 return alphaData[y * width + x] & 0xFF; | |
| 597 } | |
| 598 | |
| 599 /** | |
| 600 * Returns <code>getWidth</code> alpha values starting at offset | |
| 601 * <code>x</code> in scanline <code>y</code> in the receiver's alpha | |
| 602 * data starting at <code>startIndex</code>. | |
| 603 * | |
| 604 * @param x the x position of the pixel to begin getting alpha values | |
| 605 * @param y the y position of the pixel to begin getting alpha values | |
| 606 * @param getWidth the width of the data to get | |
| 607 * @param alphas the buffer in which to put the alpha values | |
| 608 * @param startIndex the offset into the image to begin getting alpha values | |
| 609 * | |
| 610 * @exception IndexOutOfBoundsException if getWidth is too large | |
| 611 * @exception IllegalArgumentException <ul> | |
| 612 * <li>ERROR_NULL_ARGUMENT - if pixels is null</li> | |
| 613 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 614 * <li>ERROR_INVALID_ARGUMENT - if getWidth is negative</li> | |
| 615 * </ul> | |
| 616 */ | |
| 617 public void getAlphas(int x, int y, int getWidth, byte[] alphas, int startIndex) { | |
| 618 if (alphas == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 619 if (getWidth < 0 || x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 620 if (getWidth == 0) return; | |
| 621 | |
| 622 if (alphaData == null) { | |
| 623 int endIndex = startIndex + getWidth; | |
| 624 for (int i = startIndex; i < endIndex; i++) { | |
| 625 alphas[i] = cast(byte)255; | |
| 626 } | |
| 627 return; | |
| 628 } | |
| 629 // may throw an IndexOutOfBoundsException | |
|
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630 System.arraycopy(alphaData, y * width + x, alphas, startIndex, getWidth); |
| 5 | 631 } |
| 632 | |
| 633 /** | |
| 634 * Returns the pixel value at offset <code>x</code> in | |
| 635 * scanline <code>y</code> in the receiver's data. | |
| 636 * | |
| 637 * @param x the x position of the pixel to get | |
| 638 * @param y the y position of the pixel to get | |
| 639 * @return the pixel at the given coordinates | |
| 640 * | |
| 641 * @exception IllegalArgumentException <ul> | |
| 642 * <li>ERROR_INVALID_ARGUMENT - if either argument is out of bounds</li> | |
| 643 * </ul> | |
| 644 * @exception SWTException <ul> | |
| 645 * <li>ERROR_UNSUPPORTED_DEPTH if the depth is not one of 1, 2, 4, 8, 16, 24 or 32</li> | |
| 646 * </ul> | |
| 647 */ | |
| 648 public int getPixel(int x, int y) { | |
| 649 if (x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 650 int index; | |
| 651 int theByte; | |
| 652 int mask; | |
| 653 switch (depth) { | |
| 654 case 32: | |
| 655 index = (y * bytesPerLine) + (x * 4); | |
| 656 return ((data[index] & 0xFF) << 24) + ((data[index+1] & 0xFF) << 16) + | |
| 657 ((data[index+2] & 0xFF) << 8) + (data[index+3] & 0xFF); | |
| 658 case 24: | |
| 659 index = (y * bytesPerLine) + (x * 3); | |
| 660 return ((data[index] & 0xFF) << 16) + ((data[index+1] & 0xFF) << 8) + | |
| 661 (data[index+2] & 0xFF); | |
| 662 case 16: | |
| 663 index = (y * bytesPerLine) + (x * 2); | |
| 664 return ((data[index+1] & 0xFF) << 8) + (data[index] & 0xFF); | |
| 665 case 8: | |
| 666 index = (y * bytesPerLine) + x ; | |
| 667 return data[index] & 0xFF; | |
| 668 case 4: | |
| 669 index = (y * bytesPerLine) + (x >> 1); | |
| 670 theByte = data[index] & 0xFF; | |
| 671 if ((x & 0x1) == 0) { | |
| 672 return theByte >> 4; | |
| 673 } else { | |
| 674 return theByte & 0x0F; | |
| 675 } | |
| 676 case 2: | |
| 677 index = (y * bytesPerLine) + (x >> 2); | |
| 678 theByte = data[index] & 0xFF; | |
| 679 int offset = 3 - (x % 4); | |
| 680 mask = 3 << (offset * 2); | |
| 681 return (theByte & mask) >> (offset * 2); | |
| 682 case 1: | |
| 683 index = (y * bytesPerLine) + (x >> 3); | |
| 684 theByte = data[index] & 0xFF; | |
| 685 mask = 1 << (7 - (x & 0x7)); | |
| 686 if ((theByte & mask) == 0) { | |
| 687 return 0; | |
| 688 } else { | |
| 689 return 1; | |
| 690 } | |
| 691 } | |
| 692 SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); | |
| 693 return 0; | |
| 694 } | |
| 695 | |
| 696 /** | |
| 697 * Returns <code>getWidth</code> pixel values starting at offset | |
| 698 * <code>x</code> in scanline <code>y</code> in the receiver's | |
| 699 * data starting at <code>startIndex</code>. | |
| 700 * | |
| 701 * @param x the x position of the first pixel to get | |
| 702 * @param y the y position of the first pixel to get | |
| 703 * @param getWidth the width of the data to get | |
| 704 * @param pixels the buffer in which to put the pixels | |
| 705 * @param startIndex the offset into the byte array to begin storing pixels | |
| 706 * | |
| 707 * @exception IndexOutOfBoundsException if getWidth is too large | |
| 708 * @exception IllegalArgumentException <ul> | |
| 709 * <li>ERROR_NULL_ARGUMENT - if pixels is null</li> | |
| 710 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 711 * <li>ERROR_INVALID_ARGUMENT - if getWidth is negative</li> | |
| 712 * </ul> | |
| 713 * @exception SWTException <ul> | |
| 714 * <li>ERROR_UNSUPPORTED_DEPTH - if the depth is not one of 1, 2, 4 or 8 | |
| 715 * (For higher depths, use the int[] version of this method.)</li> | |
| 716 * </ul> | |
| 717 */ | |
| 718 public void getPixels(int x, int y, int getWidth, byte[] pixels, int startIndex) { | |
| 719 if (pixels == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 720 if (getWidth < 0 || x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 721 if (getWidth == 0) return; | |
| 722 int index; | |
| 723 int theByte; | |
| 724 int mask = 0; | |
| 725 int n = getWidth; | |
| 726 int i = startIndex; | |
| 727 int srcX = x, srcY = y; | |
| 728 switch (depth) { | |
| 729 case 8: | |
| 730 index = (y * bytesPerLine) + x; | |
| 731 for (int j = 0; j < getWidth; j++) { | |
| 732 pixels[i] = data[index]; | |
| 733 i++; | |
| 734 srcX++; | |
| 735 if (srcX >= width) { | |
| 736 srcY++; | |
| 737 index = srcY * bytesPerLine; | |
| 738 srcX = 0; | |
| 739 } else { | |
| 740 index++; | |
| 741 } | |
| 742 } | |
| 743 return; | |
| 744 case 4: | |
| 745 index = (y * bytesPerLine) + (x >> 1); | |
| 746 if ((x & 0x1) == 1) { | |
| 747 theByte = data[index] & 0xFF; | |
| 748 pixels[i] = cast(byte)(theByte & 0x0F); | |
| 749 i++; | |
| 750 n--; | |
| 751 srcX++; | |
| 752 if (srcX >= width) { | |
| 753 srcY++; | |
| 754 index = srcY * bytesPerLine; | |
| 755 srcX = 0; | |
| 756 } else { | |
| 757 index++; | |
| 758 } | |
| 759 } | |
| 760 while (n > 1) { | |
| 761 theByte = data[index] & 0xFF; | |
| 762 pixels[i] = cast(byte)(theByte >> 4); | |
| 763 i++; | |
| 764 n--; | |
| 765 srcX++; | |
| 766 if (srcX >= width) { | |
| 767 srcY++; | |
| 768 index = srcY * bytesPerLine; | |
| 769 srcX = 0; | |
| 770 } else { | |
| 771 pixels[i] = cast(byte)(theByte & 0x0F); | |
| 772 i++; | |
| 773 n--; | |
| 774 srcX++; | |
| 775 if (srcX >= width) { | |
| 776 srcY++; | |
| 777 index = srcY * bytesPerLine; | |
| 778 srcX = 0; | |
| 779 } else { | |
| 780 index++; | |
| 781 } | |
| 782 } | |
| 783 } | |
| 784 if (n > 0) { | |
| 785 theByte = data[index] & 0xFF; | |
| 786 pixels[i] = cast(byte)(theByte >> 4); | |
| 787 } | |
| 788 return; | |
| 789 case 2: | |
| 790 index = (y * bytesPerLine) + (x >> 2); | |
| 791 theByte = data[index] & 0xFF; | |
| 792 int offset; | |
| 793 while (n > 0) { | |
| 794 offset = 3 - (srcX % 4); | |
| 795 mask = 3 << (offset * 2); | |
| 796 pixels[i] = cast(byte)((theByte & mask) >> (offset * 2)); | |
| 797 i++; | |
| 798 n--; | |
| 799 srcX++; | |
| 800 if (srcX >= width) { | |
| 801 srcY++; | |
| 802 index = srcY * bytesPerLine; | |
| 803 if (n > 0) theByte = data[index] & 0xFF; | |
| 804 srcX = 0; | |
| 805 } else { | |
| 806 if (offset == 0) { | |
| 807 index++; | |
| 808 theByte = data[index] & 0xFF; | |
| 809 } | |
| 810 } | |
| 811 } | |
| 812 return; | |
| 813 case 1: | |
| 814 index = (y * bytesPerLine) + (x >> 3); | |
| 815 theByte = data[index] & 0xFF; | |
| 816 while (n > 0) { | |
| 817 mask = 1 << (7 - (srcX & 0x7)); | |
| 818 if ((theByte & mask) == 0) { | |
| 819 pixels[i] = 0; | |
| 820 } else { | |
| 821 pixels[i] = 1; | |
| 822 } | |
| 823 i++; | |
| 824 n--; | |
| 825 srcX++; | |
| 826 if (srcX >= width) { | |
| 827 srcY++; | |
| 828 index = srcY * bytesPerLine; | |
| 829 if (n > 0) theByte = data[index] & 0xFF; | |
| 830 srcX = 0; | |
| 831 } else { | |
| 832 if (mask == 1) { | |
| 833 index++; | |
| 834 if (n > 0) theByte = data[index] & 0xFF; | |
| 835 } | |
| 836 } | |
| 837 } | |
| 838 return; | |
| 839 } | |
| 840 SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); | |
| 841 } | |
| 842 | |
| 843 /** | |
| 844 * Returns <code>getWidth</code> pixel values starting at offset | |
| 845 * <code>x</code> in scanline <code>y</code> in the receiver's | |
| 846 * data starting at <code>startIndex</code>. | |
| 847 * | |
| 848 * @param x the x position of the first pixel to get | |
| 849 * @param y the y position of the first pixel to get | |
| 850 * @param getWidth the width of the data to get | |
| 851 * @param pixels the buffer in which to put the pixels | |
| 852 * @param startIndex the offset into the buffer to begin storing pixels | |
| 853 * | |
| 854 * @exception IndexOutOfBoundsException if getWidth is too large | |
| 855 * @exception IllegalArgumentException <ul> | |
| 856 * <li>ERROR_NULL_ARGUMENT - if pixels is null</li> | |
| 857 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 858 * <li>ERROR_INVALID_ARGUMENT - if getWidth is negative</li> | |
| 859 * </ul> | |
| 860 * @exception SWTException <ul> | |
| 861 * <li>ERROR_UNSUPPORTED_DEPTH - if the depth is not one of 1, 2, 4, 8, 16, 24 or 32</li> | |
| 862 * </ul> | |
| 863 */ | |
| 864 public void getPixels(int x, int y, int getWidth, int[] pixels, int startIndex) { | |
| 865 if (pixels == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 866 if (getWidth < 0 || x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 867 if (getWidth == 0) return; | |
| 868 int index; | |
| 869 int theByte; | |
| 870 int mask; | |
| 871 int n = getWidth; | |
| 872 int i = startIndex; | |
| 873 int srcX = x, srcY = y; | |
| 874 switch (depth) { | |
| 875 case 32: | |
| 876 index = (y * bytesPerLine) + (x * 4); | |
| 877 i = startIndex; | |
| 878 for (int j = 0; j < getWidth; j++) { | |
| 879 pixels[i] = ((data[index] & 0xFF) << 24) | ((data[index+1] & 0xFF) << 16) | |
| 880 | ((data[index+2] & 0xFF) << 8) | (data[index+3] & 0xFF); | |
| 881 i++; | |
| 882 srcX++; | |
| 883 if (srcX >= width) { | |
| 884 srcY++; | |
| 885 index = srcY * bytesPerLine; | |
| 886 srcX = 0; | |
| 887 } else { | |
| 888 index += 4; | |
| 889 } | |
| 890 } | |
| 891 return; | |
| 892 case 24: | |
| 893 index = (y * bytesPerLine) + (x * 3); | |
| 894 for (int j = 0; j < getWidth; j++) { | |
| 895 pixels[i] = ((data[index] & 0xFF) << 16) | ((data[index+1] & 0xFF) << 8) | |
| 896 | (data[index+2] & 0xFF); | |
| 897 i++; | |
| 898 srcX++; | |
| 899 if (srcX >= width) { | |
| 900 srcY++; | |
| 901 index = srcY * bytesPerLine; | |
| 902 srcX = 0; | |
| 903 } else { | |
| 904 index += 3; | |
| 905 } | |
| 906 } | |
| 907 return; | |
| 908 case 16: | |
| 909 index = (y * bytesPerLine) + (x * 2); | |
| 910 for (int j = 0; j < getWidth; j++) { | |
| 911 pixels[i] = ((data[index+1] & 0xFF) << 8) + (data[index] & 0xFF); | |
| 912 i++; | |
| 913 srcX++; | |
| 914 if (srcX >= width) { | |
| 915 srcY++; | |
| 916 index = srcY * bytesPerLine; | |
| 917 srcX = 0; | |
| 918 } else { | |
| 919 index += 2; | |
| 920 } | |
| 921 } | |
| 922 return; | |
| 923 case 8: | |
| 924 index = (y * bytesPerLine) + x; | |
| 925 for (int j = 0; j < getWidth; j++) { | |
| 926 pixels[i] = data[index] & 0xFF; | |
| 927 i++; | |
| 928 srcX++; | |
| 929 if (srcX >= width) { | |
| 930 srcY++; | |
| 931 index = srcY * bytesPerLine; | |
| 932 srcX = 0; | |
| 933 } else { | |
| 934 index++; | |
| 935 } | |
| 936 } | |
| 937 return; | |
| 938 case 4: | |
| 939 index = (y * bytesPerLine) + (x >> 1); | |
| 940 if ((x & 0x1) == 1) { | |
| 941 theByte = data[index] & 0xFF; | |
| 942 pixels[i] = theByte & 0x0F; | |
| 943 i++; | |
| 944 n--; | |
| 945 srcX++; | |
| 946 if (srcX >= width) { | |
| 947 srcY++; | |
| 948 index = srcY * bytesPerLine; | |
| 949 srcX = 0; | |
| 950 } else { | |
| 951 index++; | |
| 952 } | |
| 953 } | |
| 954 while (n > 1) { | |
| 955 theByte = data[index] & 0xFF; | |
| 956 pixels[i] = theByte >> 4; | |
| 957 i++; | |
| 958 n--; | |
| 959 srcX++; | |
| 960 if (srcX >= width) { | |
| 961 srcY++; | |
| 962 index = srcY * bytesPerLine; | |
| 963 srcX = 0; | |
| 964 } else { | |
| 965 pixels[i] = theByte & 0x0F; | |
| 966 i++; | |
| 967 n--; | |
| 968 srcX++; | |
| 969 if (srcX >= width) { | |
| 970 srcY++; | |
| 971 index = srcY * bytesPerLine; | |
| 972 srcX = 0; | |
| 973 } else { | |
| 974 index++; | |
| 975 } | |
| 976 } | |
| 977 } | |
| 978 if (n > 0) { | |
| 979 theByte = data[index] & 0xFF; | |
| 980 pixels[i] = theByte >> 4; | |
| 981 } | |
| 982 return; | |
| 983 case 2: | |
| 984 index = (y * bytesPerLine) + (x >> 2); | |
| 985 theByte = data[index] & 0xFF; | |
| 986 int offset; | |
| 987 while (n > 0) { | |
| 988 offset = 3 - (srcX % 4); | |
| 989 mask = 3 << (offset * 2); | |
| 990 pixels[i] = cast(byte)((theByte & mask) >> (offset * 2)); | |
| 991 i++; | |
| 992 n--; | |
| 993 srcX++; | |
| 994 if (srcX >= width) { | |
| 995 srcY++; | |
| 996 index = srcY * bytesPerLine; | |
| 997 if (n > 0) theByte = data[index] & 0xFF; | |
| 998 srcX = 0; | |
| 999 } else { | |
| 1000 if (offset == 0) { | |
| 1001 index++; | |
| 1002 theByte = data[index] & 0xFF; | |
| 1003 } | |
| 1004 } | |
| 1005 } | |
| 1006 return; | |
| 1007 case 1: | |
| 1008 index = (y * bytesPerLine) + (x >> 3); | |
| 1009 theByte = data[index] & 0xFF; | |
| 1010 while (n > 0) { | |
| 1011 mask = 1 << (7 - (srcX & 0x7)); | |
| 1012 if ((theByte & mask) == 0) { | |
| 1013 pixels[i] = 0; | |
| 1014 } else { | |
| 1015 pixels[i] = 1; | |
| 1016 } | |
| 1017 i++; | |
| 1018 n--; | |
| 1019 srcX++; | |
| 1020 if (srcX >= width) { | |
| 1021 srcY++; | |
| 1022 index = srcY * bytesPerLine; | |
| 1023 if (n > 0) theByte = data[index] & 0xFF; | |
| 1024 srcX = 0; | |
| 1025 } else { | |
| 1026 if (mask == 1) { | |
| 1027 index++; | |
| 1028 if (n > 0) theByte = data[index] & 0xFF; | |
| 1029 } | |
| 1030 } | |
| 1031 } | |
| 1032 return; | |
| 1033 } | |
| 1034 SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); | |
| 1035 } | |
| 1036 | |
| 1037 /** | |
| 1038 * Returns an array of <code>RGB</code>s which comprise the | |
| 1039 * indexed color table of the receiver, or null if the receiver | |
| 1040 * has a direct color model. | |
| 1041 * | |
| 1042 * @return the RGB values for the image or null if direct color | |
| 1043 * | |
| 1044 * @see PaletteData#getRGBs() | |
| 1045 */ | |
| 1046 public RGB[] getRGBs() { | |
| 1047 return palette.getRGBs(); | |
| 1048 } | |
| 1049 | |
| 1050 /** | |
| 1051 * Returns an <code>ImageData</code> which specifies the | |
| 1052 * transparency mask information for the receiver. If the | |
| 1053 * receiver has no transparency or is not an icon, returns | |
| 1054 * an opaque mask. | |
| 1055 * | |
| 1056 * @return the transparency mask | |
| 1057 */ | |
| 1058 public ImageData getTransparencyMask() { | |
| 1059 if (getTransparencyType() == SWT.TRANSPARENCY_MASK) { | |
| 1060 return new ImageData(width, height, 1, bwPalette(), maskPad, maskData); | |
| 1061 } else { | |
| 1062 return colorMaskImage(transparentPixel); | |
| 1063 } | |
| 1064 } | |
| 1065 | |
| 1066 /** | |
| 1067 * Returns the image transparency type, which will be one of | |
| 1068 * <code>SWT.TRANSPARENCY_NONE</code>, <code>SWT.TRANSPARENCY_MASK</code>, | |
| 1069 * <code>SWT.TRANSPARENCY_PIXEL</code> or <code>SWT.TRANSPARENCY_ALPHA</code>. | |
| 1070 * | |
| 1071 * @return the receiver's transparency type | |
| 1072 */ | |
| 1073 public int getTransparencyType() { | |
| 1074 if (maskData != null) return SWT.TRANSPARENCY_MASK; | |
| 1075 if (transparentPixel != -1) return SWT.TRANSPARENCY_PIXEL; | |
| 1076 if (alphaData != null) return SWT.TRANSPARENCY_ALPHA; | |
| 1077 return SWT.TRANSPARENCY_NONE; | |
| 1078 } | |
| 1079 | |
| 1080 /** | |
| 1081 * Returns the byte order of the receiver. | |
| 1082 * | |
| 1083 * @return MSB_FIRST or LSB_FIRST | |
| 1084 */ | |
| 1085 int getByteOrder() { | |
| 1086 return depth != 16 ? MSB_FIRST : LSB_FIRST; | |
| 1087 } | |
| 1088 | |
| 1089 /** | |
| 1090 * Returns a copy of the receiver which has been stretched or | |
| 1091 * shrunk to the specified size. If either the width or height | |
| 1092 * is negative, the resulting image will be inverted in the | |
| 1093 * associated axis. | |
| 1094 * | |
| 1095 * @param width the width of the new ImageData | |
| 1096 * @param height the height of the new ImageData | |
| 1097 * @return a scaled copy of the image | |
| 1098 */ | |
| 1099 public ImageData scaledTo(int width, int height) { | |
| 1100 /* Create a destination image with no data */ | |
| 1101 bool flipX = (width < 0); | |
| 1102 if (flipX) width = - width; | |
| 1103 bool flipY = (height < 0); | |
| 1104 if (flipY) height = - height; | |
| 1105 | |
| 1106 ImageData dest = new ImageData( | |
| 1107 width, height, depth, palette, | |
| 1108 scanlinePad, null, 0, null, | |
| 1109 null, -1, transparentPixel, type, | |
| 1110 x, y, disposalMethod, delayTime); | |
| 1111 | |
| 1112 /* Scale the image contents */ | |
| 1113 if (palette.isDirect) blit(BLIT_SRC, | |
| 1114 this.data, this.depth, this.bytesPerLine, this.getByteOrder(), 0, 0, this.width, this.height, 0, 0, 0, | |
| 1115 ALPHA_OPAQUE, null, 0, 0, 0, | |
| 1116 dest.data, dest.depth, dest.bytesPerLine, dest.getByteOrder(), 0, 0, dest.width, dest.height, 0, 0, 0, | |
| 1117 flipX, flipY); | |
| 1118 else blit(BLIT_SRC, | |
| 1119 this.data, this.depth, this.bytesPerLine, this.getByteOrder(), 0, 0, this.width, this.height, null, null, null, | |
| 1120 ALPHA_OPAQUE, null, 0, 0, 0, | |
| 1121 dest.data, dest.depth, dest.bytesPerLine, dest.getByteOrder(), 0, 0, dest.width, dest.height, null, null, null, | |
| 1122 flipX, flipY); | |
| 1123 | |
| 1124 /* Scale the image mask or alpha */ | |
| 1125 if (maskData != null) { | |
| 1126 dest.maskPad = this.maskPad; | |
| 1127 int destBpl = (dest.width + 7) / 8; | |
| 1128 destBpl = (destBpl + (dest.maskPad - 1)) / dest.maskPad * dest.maskPad; | |
| 1129 dest.maskData = new byte[destBpl * dest.height]; | |
| 1130 int srcBpl = (this.width + 7) / 8; | |
| 1131 srcBpl = (srcBpl + (this.maskPad - 1)) / this.maskPad * this.maskPad; | |
| 1132 blit(BLIT_SRC, | |
| 1133 this.maskData, 1, srcBpl, MSB_FIRST, 0, 0, this.width, this.height, null, null, null, | |
| 1134 ALPHA_OPAQUE, null, 0, 0, 0, | |
| 1135 dest.maskData, 1, destBpl, MSB_FIRST, 0, 0, dest.width, dest.height, null, null, null, | |
| 1136 flipX, flipY); | |
| 1137 } else if (alpha != -1) { | |
| 1138 dest.alpha = this.alpha; | |
| 1139 } else if (alphaData != null) { | |
| 1140 dest.alphaData = new byte[dest.width * dest.height]; | |
| 1141 blit(BLIT_SRC, | |
| 1142 this.alphaData, 8, this.width, MSB_FIRST, 0, 0, this.width, this.height, null, null, null, | |
| 1143 ALPHA_OPAQUE, null, 0, 0, 0, | |
| 1144 dest.alphaData, 8, dest.width, MSB_FIRST, 0, 0, dest.width, dest.height, null, null, null, | |
| 1145 flipX, flipY); | |
| 1146 } | |
| 1147 return dest; | |
| 1148 } | |
| 1149 | |
| 1150 /** | |
| 1151 * Sets the alpha value at offset <code>x</code> in | |
| 1152 * scanline <code>y</code> in the receiver's alpha data. | |
| 1153 * | |
| 1154 * @param x the x coordinate of the alpha value to set | |
| 1155 * @param y the y coordinate of the alpha value to set | |
| 1156 * @param alpha the value to set the alpha to | |
| 1157 * | |
| 1158 * @exception IllegalArgumentException <ul> | |
| 1159 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 1160 * </ul> | |
| 1161 */ | |
| 1162 public void setAlpha(int x, int y, int alpha) { | |
| 1163 if (x >= width || y >= height || x < 0 || y < 0 || alpha < 0 || alpha > 255) | |
| 1164 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 1165 | |
| 1166 if (alphaData == null) alphaData = new byte[width * height]; | |
| 1167 alphaData[y * width + x] = cast(byte)alpha; | |
| 1168 } | |
| 1169 | |
| 1170 /** | |
| 1171 * Sets the alpha values starting at offset <code>x</code> in | |
| 1172 * scanline <code>y</code> in the receiver's alpha data to the | |
| 1173 * values from the array <code>alphas</code> starting at | |
| 1174 * <code>startIndex</code>. | |
| 1175 * | |
| 1176 * @param x the x coordinate of the pixel to being setting the alpha values | |
| 1177 * @param y the y coordinate of the pixel to being setting the alpha values | |
| 1178 * @param putWidth the width of the alpha values to set | |
| 1179 * @param alphas the alpha values to set | |
| 1180 * @param startIndex the index at which to begin setting | |
| 1181 * | |
| 1182 * @exception IndexOutOfBoundsException if putWidth is too large | |
| 1183 * @exception IllegalArgumentException <ul> | |
| 1184 * <li>ERROR_NULL_ARGUMENT - if pixels is null</li> | |
| 1185 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 1186 * <li>ERROR_INVALID_ARGUMENT - if putWidth is negative</li> | |
| 1187 * </ul> | |
| 1188 */ | |
| 1189 public void setAlphas(int x, int y, int putWidth, byte[] alphas, int startIndex) { | |
| 1190 if (alphas == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1191 if (putWidth < 0 || x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 1192 if (putWidth == 0) return; | |
| 1193 | |
| 1194 if (alphaData == null) alphaData = new byte[width * height]; | |
| 1195 // may throw an IndexOutOfBoundsException | |
|
25
fc2b263b8a3f
Merged back the System.arraycopy and use a System class
Frank Benoit <benoit@tionex.de>
parents:
18
diff
changeset
|
1196 System.arraycopy(alphas, startIndex, alphaData, y * width + x, putWidth); |
| 5 | 1197 } |
| 1198 | |
| 1199 /** | |
| 1200 * Sets the pixel value at offset <code>x</code> in | |
| 1201 * scanline <code>y</code> in the receiver's data. | |
| 1202 * | |
| 1203 * @param x the x coordinate of the pixel to set | |
| 1204 * @param y the y coordinate of the pixel to set | |
| 1205 * @param pixelValue the value to set the pixel to | |
| 1206 * | |
| 1207 * @exception IllegalArgumentException <ul> | |
| 1208 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 1209 * </ul> | |
| 1210 * @exception SWTException <ul> | |
| 1211 * <li>ERROR_UNSUPPORTED_DEPTH if the depth is not one of 1, 2, 4, 8, 16, 24 or 32</li> | |
| 1212 * </ul> | |
| 1213 */ | |
| 1214 public void setPixel(int x, int y, int pixelValue) { | |
| 1215 if (x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 1216 int index; | |
| 1217 byte theByte; | |
| 1218 int mask; | |
| 1219 switch (depth) { | |
| 1220 case 32: | |
| 1221 index = (y * bytesPerLine) + (x * 4); | |
| 1222 data[index] = cast(byte)((pixelValue >> 24) & 0xFF); | |
| 1223 data[index + 1] = cast(byte)((pixelValue >> 16) & 0xFF); | |
| 1224 data[index + 2] = cast(byte)((pixelValue >> 8) & 0xFF); | |
| 1225 data[index + 3] = cast(byte)(pixelValue & 0xFF); | |
| 1226 return; | |
| 1227 case 24: | |
| 1228 index = (y * bytesPerLine) + (x * 3); | |
| 1229 data[index] = cast(byte)((pixelValue >> 16) & 0xFF); | |
| 1230 data[index + 1] = cast(byte)((pixelValue >> 8) & 0xFF); | |
| 1231 data[index + 2] = cast(byte)(pixelValue & 0xFF); | |
| 1232 return; | |
| 1233 case 16: | |
| 1234 index = (y * bytesPerLine) + (x * 2); | |
| 1235 data[index + 1] = cast(byte)((pixelValue >> 8) & 0xFF); | |
| 1236 data[index] = cast(byte)(pixelValue & 0xFF); | |
| 1237 return; | |
| 1238 case 8: | |
| 1239 index = (y * bytesPerLine) + x ; | |
| 1240 data[index] = cast(byte)(pixelValue & 0xFF); | |
| 1241 return; | |
| 1242 case 4: | |
| 1243 index = (y * bytesPerLine) + (x >> 1); | |
| 1244 if ((x & 0x1) == 0) { | |
| 1245 data[index] = cast(byte)((data[index] & 0x0F) | ((pixelValue & 0x0F) << 4)); | |
| 1246 } else { | |
| 1247 data[index] = cast(byte)((data[index] & 0xF0) | (pixelValue & 0x0F)); | |
| 1248 } | |
| 1249 return; | |
| 1250 case 2: | |
| 1251 index = (y * bytesPerLine) + (x >> 2); | |
| 1252 theByte = data[index]; | |
| 1253 int offset = 3 - (x % 4); | |
| 1254 mask = 0xFF ^ (3 << (offset * 2)); | |
| 1255 data[index] = cast(byte)((data[index] & mask) | (pixelValue << (offset * 2))); | |
| 1256 return; | |
| 1257 case 1: | |
| 1258 index = (y * bytesPerLine) + (x >> 3); | |
| 1259 theByte = data[index]; | |
| 1260 mask = 1 << (7 - (x & 0x7)); | |
| 1261 if ((pixelValue & 0x1) == 1) { | |
| 1262 data[index] = cast(byte)(theByte | mask); | |
| 1263 } else { | |
| 1264 data[index] = cast(byte)(theByte & (mask ^ -1)); | |
| 1265 } | |
| 1266 return; | |
| 1267 } | |
| 1268 SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); | |
| 1269 } | |
| 1270 | |
| 1271 /** | |
| 1272 * Sets the pixel values starting at offset <code>x</code> in | |
| 1273 * scanline <code>y</code> in the receiver's data to the | |
| 1274 * values from the array <code>pixels</code> starting at | |
| 1275 * <code>startIndex</code>. | |
| 1276 * | |
| 1277 * @param x the x position of the pixel to set | |
| 1278 * @param y the y position of the pixel to set | |
| 1279 * @param putWidth the width of the pixels to set | |
| 1280 * @param pixels the pixels to set | |
| 1281 * @param startIndex the index at which to begin setting | |
| 1282 * | |
| 1283 * @exception IndexOutOfBoundsException if putWidth is too large | |
| 1284 * @exception IllegalArgumentException <ul> | |
| 1285 * <li>ERROR_NULL_ARGUMENT - if pixels is null</li> | |
| 1286 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 1287 * <li>ERROR_INVALID_ARGUMENT - if putWidth is negative</li> | |
| 1288 * </ul> | |
| 1289 * @exception SWTException <ul> | |
| 1290 * <li>ERROR_UNSUPPORTED_DEPTH if the depth is not one of 1, 2, 4, 8 | |
| 1291 * (For higher depths, use the int[] version of this method.)</li> | |
| 1292 * </ul> | |
| 1293 */ | |
| 1294 public void setPixels(int x, int y, int putWidth, byte[] pixels, int startIndex) { | |
| 1295 if (pixels == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1296 if (putWidth < 0 || x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 1297 if (putWidth == 0) return; | |
| 1298 int index; | |
| 1299 int theByte; | |
| 1300 int mask; | |
| 1301 int n = putWidth; | |
| 1302 int i = startIndex; | |
| 1303 int srcX = x, srcY = y; | |
| 1304 switch (depth) { | |
| 1305 case 8: | |
| 1306 index = (y * bytesPerLine) + x; | |
| 1307 for (int j = 0; j < putWidth; j++) { | |
| 1308 data[index] = cast(byte)(pixels[i] & 0xFF); | |
| 1309 i++; | |
| 1310 srcX++; | |
| 1311 if (srcX >= width) { | |
| 1312 srcY++; | |
| 1313 index = srcY * bytesPerLine; | |
| 1314 srcX = 0; | |
| 1315 } else { | |
| 1316 index++; | |
| 1317 } | |
| 1318 } | |
| 1319 return; | |
| 1320 case 4: | |
| 1321 index = (y * bytesPerLine) + (x >> 1); | |
| 1322 bool high = (x & 0x1) == 0; | |
| 1323 while (n > 0) { | |
| 1324 theByte = pixels[i] & 0x0F; | |
| 1325 if (high) { | |
| 1326 data[index] = cast(byte)((data[index] & 0x0F) | (theByte << 4)); | |
| 1327 } else { | |
| 1328 data[index] = cast(byte)((data[index] & 0xF0) | theByte); | |
| 1329 } | |
| 1330 i++; | |
| 1331 n--; | |
| 1332 srcX++; | |
| 1333 if (srcX >= width) { | |
| 1334 srcY++; | |
| 1335 index = srcY * bytesPerLine; | |
| 1336 high = true; | |
| 1337 srcX = 0; | |
| 1338 } else { | |
| 1339 if (!high) index++; | |
| 1340 high = !high; | |
| 1341 } | |
| 1342 } | |
| 1343 return; | |
| 1344 case 2: | |
| 1345 byte [] masks = [ cast(byte)0xFC, cast(byte)0xF3, cast(byte)0xCF, cast(byte)0x3F ]; | |
| 1346 index = (y * bytesPerLine) + (x >> 2); | |
| 1347 int offset = 3 - (x % 4); | |
| 1348 while (n > 0) { | |
| 1349 theByte = pixels[i] & 0x3; | |
| 1350 data[index] = cast(byte)((data[index] & masks[offset]) | (theByte << (offset * 2))); | |
| 1351 i++; | |
| 1352 n--; | |
| 1353 srcX++; | |
| 1354 if (srcX >= width) { | |
| 1355 srcY++; | |
| 1356 index = srcY * bytesPerLine; | |
| 1357 offset = 0; | |
| 1358 srcX = 0; | |
| 1359 } else { | |
| 1360 if (offset == 0) { | |
| 1361 index++; | |
| 1362 offset = 3; | |
| 1363 } else { | |
| 1364 offset--; | |
| 1365 } | |
| 1366 } | |
| 1367 } | |
| 1368 return; | |
| 1369 case 1: | |
| 1370 index = (y * bytesPerLine) + (x >> 3); | |
| 1371 while (n > 0) { | |
| 1372 mask = 1 << (7 - (srcX & 0x7)); | |
| 1373 if ((pixels[i] & 0x1) == 1) { | |
| 1374 data[index] = cast(byte)((data[index] & 0xFF) | mask); | |
| 1375 } else { | |
| 1376 data[index] = cast(byte)((data[index] & 0xFF) & (mask ^ -1)); | |
| 1377 } | |
| 1378 i++; | |
| 1379 n--; | |
| 1380 srcX++; | |
| 1381 if (srcX >= width) { | |
| 1382 srcY++; | |
| 1383 index = srcY * bytesPerLine; | |
| 1384 srcX = 0; | |
| 1385 } else { | |
| 1386 if (mask == 1) { | |
| 1387 index++; | |
| 1388 } | |
| 1389 } | |
| 1390 } | |
| 1391 return; | |
| 1392 } | |
| 1393 SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); | |
| 1394 } | |
| 1395 | |
| 1396 /** | |
| 1397 * Sets the pixel values starting at offset <code>x</code> in | |
| 1398 * scanline <code>y</code> in the receiver's data to the | |
| 1399 * values from the array <code>pixels</code> starting at | |
| 1400 * <code>startIndex</code>. | |
| 1401 * | |
| 1402 * @param x the x position of the pixel to set | |
| 1403 * @param y the y position of the pixel to set | |
| 1404 * @param putWidth the width of the pixels to set | |
| 1405 * @param pixels the pixels to set | |
| 1406 * @param startIndex the index at which to begin setting | |
| 1407 * | |
| 1408 * @exception IndexOutOfBoundsException if putWidth is too large | |
| 1409 * @exception IllegalArgumentException <ul> | |
| 1410 * <li>ERROR_NULL_ARGUMENT - if pixels is null</li> | |
| 1411 * <li>ERROR_INVALID_ARGUMENT - if x or y is out of bounds</li> | |
| 1412 * <li>ERROR_INVALID_ARGUMENT - if putWidth is negative</li> | |
| 1413 * </ul> | |
| 1414 * @exception SWTException <ul> | |
| 1415 * <li>ERROR_UNSUPPORTED_DEPTH if the depth is not one of 1, 2, 4, 8, 16, 24 or 32</li> | |
| 1416 * </ul> | |
| 1417 */ | |
| 1418 public void setPixels(int x, int y, int putWidth, int[] pixels, int startIndex) { | |
| 1419 if (pixels == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1420 if (putWidth < 0 || x >= width || y >= height || x < 0 || y < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 1421 if (putWidth == 0) return; | |
| 1422 int index; | |
| 1423 int theByte; | |
| 1424 int mask; | |
| 1425 int n = putWidth; | |
| 1426 int i = startIndex; | |
| 1427 int pixel; | |
| 1428 int srcX = x, srcY = y; | |
| 1429 switch (depth) { | |
| 1430 case 32: | |
| 1431 index = (y * bytesPerLine) + (x * 4); | |
| 1432 for (int j = 0; j < putWidth; j++) { | |
| 1433 pixel = pixels[i]; | |
| 1434 data[index] = cast(byte)((pixel >> 24) & 0xFF); | |
| 1435 data[index + 1] = cast(byte)((pixel >> 16) & 0xFF); | |
| 1436 data[index + 2] = cast(byte)((pixel >> 8) & 0xFF); | |
| 1437 data[index + 3] = cast(byte)(pixel & 0xFF); | |
| 1438 i++; | |
| 1439 srcX++; | |
| 1440 if (srcX >= width) { | |
| 1441 srcY++; | |
| 1442 index = srcY * bytesPerLine; | |
| 1443 srcX = 0; | |
| 1444 } else { | |
| 1445 index += 4; | |
| 1446 } | |
| 1447 } | |
| 1448 return; | |
| 1449 case 24: | |
| 1450 index = (y * bytesPerLine) + (x * 3); | |
| 1451 for (int j = 0; j < putWidth; j++) { | |
| 1452 pixel = pixels[i]; | |
| 1453 data[index] = cast(byte)((pixel >> 16) & 0xFF); | |
| 1454 data[index + 1] = cast(byte)((pixel >> 8) & 0xFF); | |
| 1455 data[index + 2] = cast(byte)(pixel & 0xFF); | |
| 1456 i++; | |
| 1457 srcX++; | |
| 1458 if (srcX >= width) { | |
| 1459 srcY++; | |
| 1460 index = srcY * bytesPerLine; | |
| 1461 srcX = 0; | |
| 1462 } else { | |
| 1463 index += 3; | |
| 1464 } | |
| 1465 } | |
| 1466 return; | |
| 1467 case 16: | |
| 1468 index = (y * bytesPerLine) + (x * 2); | |
| 1469 for (int j = 0; j < putWidth; j++) { | |
| 1470 pixel = pixels[i]; | |
| 1471 data[index] = cast(byte)(pixel & 0xFF); | |
| 1472 data[index + 1] = cast(byte)((pixel >> 8) & 0xFF); | |
| 1473 i++; | |
| 1474 srcX++; | |
| 1475 if (srcX >= width) { | |
| 1476 srcY++; | |
| 1477 index = srcY * bytesPerLine; | |
| 1478 srcX = 0; | |
| 1479 } else { | |
| 1480 index += 2; | |
| 1481 } | |
| 1482 } | |
| 1483 return; | |
| 1484 case 8: | |
| 1485 index = (y * bytesPerLine) + x; | |
| 1486 for (int j = 0; j < putWidth; j++) { | |
| 1487 data[index] = cast(byte)(pixels[i] & 0xFF); | |
| 1488 i++; | |
| 1489 srcX++; | |
| 1490 if (srcX >= width) { | |
| 1491 srcY++; | |
| 1492 index = srcY * bytesPerLine; | |
| 1493 srcX = 0; | |
| 1494 } else { | |
| 1495 index++; | |
| 1496 } | |
| 1497 } | |
| 1498 return; | |
| 1499 case 4: | |
| 1500 index = (y * bytesPerLine) + (x >> 1); | |
| 1501 bool high = (x & 0x1) == 0; | |
| 1502 while (n > 0) { | |
| 1503 theByte = pixels[i] & 0x0F; | |
| 1504 if (high) { | |
| 1505 data[index] = cast(byte)((data[index] & 0x0F) | (theByte << 4)); | |
| 1506 } else { | |
| 1507 data[index] = cast(byte)((data[index] & 0xF0) | theByte); | |
| 1508 } | |
| 1509 i++; | |
| 1510 n--; | |
| 1511 srcX++; | |
| 1512 if (srcX >= width) { | |
| 1513 srcY++; | |
| 1514 index = srcY * bytesPerLine; | |
| 1515 high = true; | |
| 1516 srcX = 0; | |
| 1517 } else { | |
| 1518 if (!high) index++; | |
| 1519 high = !high; | |
| 1520 } | |
| 1521 } | |
| 1522 return; | |
| 1523 case 2: | |
| 1524 byte [] masks = [ cast(byte)0xFC, cast(byte)0xF3, cast(byte)0xCF, cast(byte)0x3F ]; | |
| 1525 index = (y * bytesPerLine) + (x >> 2); | |
| 1526 int offset = 3 - (x % 4); | |
| 1527 while (n > 0) { | |
| 1528 theByte = pixels[i] & 0x3; | |
| 1529 data[index] = cast(byte)((data[index] & masks[offset]) | (theByte << (offset * 2))); | |
| 1530 i++; | |
| 1531 n--; | |
| 1532 srcX++; | |
| 1533 if (srcX >= width) { | |
| 1534 srcY++; | |
| 1535 index = srcY * bytesPerLine; | |
| 1536 offset = 3; | |
| 1537 srcX = 0; | |
| 1538 } else { | |
| 1539 if (offset == 0) { | |
| 1540 index++; | |
| 1541 offset = 3; | |
| 1542 } else { | |
| 1543 offset--; | |
| 1544 } | |
| 1545 } | |
| 1546 } | |
| 1547 return; | |
| 1548 case 1: | |
| 1549 index = (y * bytesPerLine) + (x >> 3); | |
| 1550 while (n > 0) { | |
| 1551 mask = 1 << (7 - (srcX & 0x7)); | |
| 1552 if ((pixels[i] & 0x1) == 1) { | |
| 1553 data[index] = cast(byte)((data[index] & 0xFF) | mask); | |
| 1554 } else { | |
| 1555 data[index] = cast(byte)((data[index] & 0xFF) & (mask ^ -1)); | |
| 1556 } | |
| 1557 i++; | |
| 1558 n--; | |
| 1559 srcX++; | |
| 1560 if (srcX >= width) { | |
| 1561 srcY++; | |
| 1562 index = srcY * bytesPerLine; | |
| 1563 srcX = 0; | |
| 1564 } else { | |
| 1565 if (mask == 1) { | |
| 1566 index++; | |
| 1567 } | |
| 1568 } | |
| 1569 } | |
| 1570 return; | |
| 1571 } | |
| 1572 SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); | |
| 1573 } | |
| 1574 | |
| 1575 /** | |
| 1576 * Returns a palette with 2 colors: black & white. | |
| 1577 */ | |
| 1578 static PaletteData bwPalette() { | |
| 1579 return new PaletteData( [ new RGB(0, 0, 0), new RGB(255, 255, 255) ] ); | |
| 1580 } | |
| 1581 | |
| 1582 /** | |
| 1583 * Gets the offset of the most significant bit for | |
| 1584 * the given mask. | |
| 1585 */ | |
| 1586 static int getMSBOffset(int mask) { | |
| 1587 for (int i = 31; i >= 0; i--) { | |
| 1588 if (((mask >> i) & 0x1) != 0) return i + 1; | |
| 1589 } | |
| 1590 return 0; | |
| 1591 } | |
| 1592 | |
| 1593 /** | |
| 1594 * Finds the closest match. | |
| 1595 */ | |
| 1596 static int closestMatch(int depth, byte red, byte green, byte blue, int redMask, int greenMask, int blueMask, byte[] reds, byte[] greens, byte[] blues) { | |
| 1597 if (depth > 8) { | |
| 1598 int rshift = 32 - getMSBOffset(redMask); | |
| 1599 int gshift = 32 - getMSBOffset(greenMask); | |
| 1600 int bshift = 32 - getMSBOffset(blueMask); | |
| 1601 return (((red << 24) >>> rshift) & redMask) | | |
| 1602 (((green << 24) >>> gshift) & greenMask) | | |
| 1603 (((blue << 24) >>> bshift) & blueMask); | |
| 1604 } | |
| 1605 int r, g, b; | |
| 1606 int minDistance = 0x7fffffff; | |
| 1607 int nearestPixel = 0; | |
| 1608 int n = reds.length; | |
| 1609 for (int j = 0; j < n; j++) { | |
| 1610 r = (reds[j] & 0xFF) - (red & 0xFF); | |
| 1611 g = (greens[j] & 0xFF) - (green & 0xFF); | |
| 1612 b = (blues[j] & 0xFF) - (blue & 0xFF); | |
| 1613 int distance = r*r + g*g + b*b; | |
| 1614 if (distance < minDistance) { | |
| 1615 nearestPixel = j; | |
| 1616 if (distance == 0) break; | |
| 1617 minDistance = distance; | |
| 1618 } | |
| 1619 } | |
| 1620 return nearestPixel; | |
| 1621 } | |
| 1622 | |
| 1623 static final ImageData convertMask(ImageData mask) { | |
| 1624 if (mask.depth == 1) return mask; | |
| 1625 PaletteData palette = new PaletteData([new RGB(0, 0, 0), new RGB(255,255,255)]); | |
| 1626 ImageData newMask = new ImageData(mask.width, mask.height, 1, palette); | |
| 1627 /* Find index of black in mask palette */ | |
| 1628 int blackIndex = 0; | |
| 1629 RGB[] rgbs = mask.getRGBs(); | |
| 1630 if (rgbs != null) { | |
| 1631 while (blackIndex < rgbs.length) { | |
| 1632 if (rgbs[blackIndex] == palette.colors[0] ) break; | |
| 1633 blackIndex++; | |
| 1634 } | |
| 1635 } | |
| 1636 int[] pixels = new int[mask.width]; | |
| 1637 for (int y = 0; y < mask.height; y++) { | |
| 1638 mask.getPixels(0, y, mask.width, pixels, 0); | |
| 1639 for (int i = 0; i < pixels.length; i++) { | |
| 1640 if (pixels[i] == blackIndex) { | |
| 1641 pixels[i] = 0; | |
| 1642 } else { | |
| 1643 pixels[i] = 1; | |
| 1644 } | |
| 1645 } | |
| 1646 newMask.setPixels(0, y, mask.width, pixels, 0); | |
| 1647 } | |
| 1648 return newMask; | |
| 1649 } | |
| 1650 | |
| 1651 static final byte[] convertPad(byte[] data, int width, int height, int depth, int pad, int newPad) { | |
| 1652 if (pad == newPad) return data; | |
| 1653 int stride = (width * depth + 7) / 8; | |
| 1654 int bpl = (stride + (pad - 1)) / pad * pad; | |
| 1655 int newBpl = (stride + (newPad - 1)) / newPad * newPad; | |
| 1656 byte[] newData = new byte[height * newBpl]; | |
| 1657 int srcIndex = 0, destIndex = 0; | |
| 1658 for (int y = 0; y < height; y++) { | |
|
25
fc2b263b8a3f
Merged back the System.arraycopy and use a System class
Frank Benoit <benoit@tionex.de>
parents:
18
diff
changeset
|
1659 System.arraycopy(data, srcIndex, newData, destIndex, stride); |
| 5 | 1660 srcIndex += bpl; |
| 1661 destIndex += newBpl; | |
| 1662 } | |
| 1663 return newData; | |
| 1664 } | |
| 1665 | |
| 1666 /** | |
| 1667 * Blit operation bits to be OR'ed together to specify the desired operation. | |
| 1668 */ | |
| 1669 static const int | |
| 1670 BLIT_SRC = 1, // copy source directly, else applies logic operations | |
| 1671 BLIT_ALPHA = 2, // enable alpha blending | |
| 1672 BLIT_DITHER = 4; // enable dithering in low color modes | |
| 1673 | |
| 1674 /** | |
| 1675 * Alpha mode, values 0 - 255 specify global alpha level | |
| 1676 */ | |
| 1677 static const int | |
| 1678 ALPHA_OPAQUE = 255, // Fully opaque (ignores any alpha data) | |
| 1679 ALPHA_TRANSPARENT = 0, // Fully transparent (ignores any alpha data) | |
| 1680 ALPHA_CHANNEL_SEPARATE = -1, // Use alpha channel from separate alphaData | |
| 1681 ALPHA_CHANNEL_SOURCE = -2, // Use alpha channel embedded in sourceData | |
| 1682 ALPHA_MASK_UNPACKED = -3, // Use transparency mask formed by bytes in alphaData (non-zero is opaque) | |
| 1683 ALPHA_MASK_PACKED = -4, // Use transparency mask formed by packed bits in alphaData | |
| 1684 ALPHA_MASK_INDEX = -5, // Consider source palette indices transparent if in alphaData array | |
| 1685 ALPHA_MASK_RGB = -6; // Consider source RGBs transparent if in RGB888 format alphaData array | |
| 1686 | |
| 1687 /** | |
| 1688 * Byte and bit order constants. | |
| 1689 */ | |
| 1690 static const int LSB_FIRST = 0; | |
| 1691 static const int MSB_FIRST = 1; | |
| 1692 | |
| 1693 /** | |
| 1694 * Data types (internal) | |
| 1695 */ | |
| 1696 private static const int | |
| 1697 // direct / true color formats with arbitrary masks & shifts | |
| 1698 TYPE_GENERIC_8 = 0, | |
| 1699 TYPE_GENERIC_16_MSB = 1, | |
| 1700 TYPE_GENERIC_16_LSB = 2, | |
| 1701 TYPE_GENERIC_24 = 3, | |
| 1702 TYPE_GENERIC_32_MSB = 4, | |
| 1703 TYPE_GENERIC_32_LSB = 5, | |
| 1704 // palette indexed color formats | |
| 1705 TYPE_INDEX_8 = 6, | |
| 1706 TYPE_INDEX_4 = 7, | |
| 1707 TYPE_INDEX_2 = 8, | |
| 1708 TYPE_INDEX_1_MSB = 9, | |
| 1709 TYPE_INDEX_1_LSB = 10; | |
| 1710 | |
| 1711 /** | |
| 1712 * Blits a direct palette image into a direct palette image. | |
| 1713 * <p> | |
| 1714 * Note: When the source and destination depth, order and masks | |
| 1715 * are pairwise equal and the blitter operation is BLIT_SRC, | |
| 1716 * the masks are ignored. Hence when not changing the image | |
| 1717 * data format, 0 may be specified for the masks. | |
| 1718 * </p> | |
| 1719 * | |
| 1720 * @param op the blitter operation: a combination of BLIT_xxx flags | |
| 1721 * (see BLIT_xxx constants) | |
| 1722 * @param srcData the source byte array containing image data | |
| 1723 * @param srcDepth the source depth: one of 8, 16, 24, 32 | |
| 1724 * @param srcStride the source number of bytes per line | |
| 1725 * @param srcOrder the source byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 1726 * ignored if srcDepth is not 16 or 32 | |
| 1727 * @param srcX the top-left x-coord of the source blit region | |
| 1728 * @param srcY the top-left y-coord of the source blit region | |
| 1729 * @param srcWidth the width of the source blit region | |
| 1730 * @param srcHeight the height of the source blit region | |
| 1731 * @param srcRedMask the source red channel mask | |
| 1732 * @param srcGreenMask the source green channel mask | |
| 1733 * @param srcBlueMask the source blue channel mask | |
| 1734 * @param alphaMode the alpha blending or mask mode, may be | |
| 1735 * an integer 0-255 for global alpha; ignored if BLIT_ALPHA | |
| 1736 * not specified in the blitter operations | |
| 1737 * (see ALPHA_MODE_xxx constants) | |
| 1738 * @param alphaData the alpha blending or mask data, varies depending | |
| 1739 * on the value of alphaMode and sometimes ignored | |
| 1740 * @param alphaStride the alpha data number of bytes per line | |
| 1741 * @param alphaX the top-left x-coord of the alpha blit region | |
| 1742 * @param alphaY the top-left y-coord of the alpha blit region | |
| 1743 * @param destData the destination byte array containing image data | |
| 1744 * @param destDepth the destination depth: one of 8, 16, 24, 32 | |
| 1745 * @param destStride the destination number of bytes per line | |
| 1746 * @param destOrder the destination byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 1747 * ignored if destDepth is not 16 or 32 | |
| 1748 * @param destX the top-left x-coord of the destination blit region | |
| 1749 * @param destY the top-left y-coord of the destination blit region | |
| 1750 * @param destWidth the width of the destination blit region | |
| 1751 * @param destHeight the height of the destination blit region | |
| 1752 * @param destRedMask the destination red channel mask | |
| 1753 * @param destGreenMask the destination green channel mask | |
| 1754 * @param destBlueMask the destination blue channel mask | |
| 1755 * @param flipX if true the resulting image is flipped along the vertical axis | |
| 1756 * @param flipY if true the resulting image is flipped along the horizontal axis | |
| 1757 */ | |
| 1758 static void blit(int op, | |
| 1759 byte[] srcData, int srcDepth, int srcStride, int srcOrder, | |
| 1760 int srcX, int srcY, int srcWidth, int srcHeight, | |
| 1761 int srcRedMask, int srcGreenMask, int srcBlueMask, | |
| 1762 int alphaMode, byte[] alphaData, int alphaStride, int alphaX, int alphaY, | |
| 1763 byte[] destData, int destDepth, int destStride, int destOrder, | |
| 1764 int destX, int destY, int destWidth, int destHeight, | |
| 1765 int destRedMask, int destGreenMask, int destBlueMask, | |
| 1766 bool flipX, bool flipY) { | |
| 1767 if ((destWidth <= 0) || (destHeight <= 0) || (alphaMode == ALPHA_TRANSPARENT)) return; | |
| 1768 | |
| 1769 // these should be supplied as params later | |
| 1770 const int srcAlphaMask = 0, destAlphaMask = 0; | |
| 1771 | |
| 1772 /*** Prepare scaling data ***/ | |
| 1773 int dwm1 = destWidth - 1; | |
| 1774 int sfxi = (dwm1 != 0) ? cast(int)(((cast(long)srcWidth << 16) - 1) / dwm1) : 0; | |
| 1775 int dhm1 = destHeight - 1; | |
| 1776 int sfyi = (dhm1 != 0) ? cast(int)(((cast(long)srcHeight << 16) - 1) / dhm1) : 0; | |
| 1777 | |
| 1778 /*** Prepare source-related data ***/ | |
| 1779 int sbpp, stype; | |
| 1780 switch (srcDepth) { | |
| 1781 case 8: | |
| 1782 sbpp = 1; | |
| 1783 stype = TYPE_GENERIC_8; | |
| 1784 break; | |
| 1785 case 16: | |
| 1786 sbpp = 2; | |
| 1787 stype = (srcOrder == MSB_FIRST) ? TYPE_GENERIC_16_MSB : TYPE_GENERIC_16_LSB; | |
| 1788 break; | |
| 1789 case 24: | |
| 1790 sbpp = 3; | |
| 1791 stype = TYPE_GENERIC_24; | |
| 1792 break; | |
| 1793 case 32: | |
| 1794 sbpp = 4; | |
| 1795 stype = (srcOrder == MSB_FIRST) ? TYPE_GENERIC_32_MSB : TYPE_GENERIC_32_LSB; | |
| 1796 break; | |
| 1797 default: | |
| 1798 //throw new IllegalArgumentException("Invalid source type"); | |
| 1799 return; | |
| 1800 } | |
| 1801 int spr = srcY * srcStride + srcX * sbpp; | |
| 1802 | |
| 1803 /*** Prepare destination-related data ***/ | |
| 1804 int dbpp, dtype; | |
| 1805 switch (destDepth) { | |
| 1806 case 8: | |
| 1807 dbpp = 1; | |
| 1808 dtype = TYPE_GENERIC_8; | |
| 1809 break; | |
| 1810 case 16: | |
| 1811 dbpp = 2; | |
| 1812 dtype = (destOrder == MSB_FIRST) ? TYPE_GENERIC_16_MSB : TYPE_GENERIC_16_LSB; | |
| 1813 break; | |
| 1814 case 24: | |
| 1815 dbpp = 3; | |
| 1816 dtype = TYPE_GENERIC_24; | |
| 1817 break; | |
| 1818 case 32: | |
| 1819 dbpp = 4; | |
| 1820 dtype = (destOrder == MSB_FIRST) ? TYPE_GENERIC_32_MSB : TYPE_GENERIC_32_LSB; | |
| 1821 break; | |
| 1822 default: | |
| 1823 //throw new IllegalArgumentException("Invalid destination type"); | |
| 1824 return; | |
| 1825 } | |
| 1826 int dpr = ((flipY) ? destY + dhm1 : destY) * destStride + ((flipX) ? destX + dwm1 : destX) * dbpp; | |
| 1827 int dprxi = (flipX) ? -dbpp : dbpp; | |
| 1828 int dpryi = (flipY) ? -destStride : destStride; | |
| 1829 | |
| 1830 /*** Prepare special processing data ***/ | |
| 1831 int apr; | |
| 1832 if ((op & BLIT_ALPHA) != 0) { | |
| 1833 switch (alphaMode) { | |
| 1834 case ALPHA_MASK_UNPACKED: | |
| 1835 case ALPHA_CHANNEL_SEPARATE: | |
| 1836 if (alphaData == null) alphaMode = 0x10000; | |
| 1837 apr = alphaY * alphaStride + alphaX; | |
| 1838 break; | |
| 1839 case ALPHA_MASK_PACKED: | |
| 1840 if (alphaData == null) alphaMode = 0x10000; | |
| 1841 alphaStride <<= 3; | |
| 1842 apr = alphaY * alphaStride + alphaX; | |
| 1843 break; | |
| 1844 case ALPHA_MASK_INDEX: | |
| 1845 //throw new IllegalArgumentException("Invalid alpha type"); | |
| 1846 return; | |
| 1847 case ALPHA_MASK_RGB: | |
| 1848 if (alphaData == null) alphaMode = 0x10000; | |
| 1849 apr = 0; | |
| 1850 break; | |
| 1851 default: | |
| 1852 alphaMode = (alphaMode << 16) / 255; // prescale | |
| 1853 case ALPHA_CHANNEL_SOURCE: | |
| 1854 apr = 0; | |
| 1855 break; | |
| 1856 } | |
| 1857 } else { | |
| 1858 alphaMode = 0x10000; | |
| 1859 apr = 0; | |
| 1860 } | |
| 1861 | |
| 1862 /*** Blit ***/ | |
| 1863 int dp = dpr; | |
| 1864 int sp = spr; | |
| 1865 if ((alphaMode == 0x10000) && (stype == dtype) && | |
| 1866 (srcRedMask == destRedMask) && (srcGreenMask == destGreenMask) && | |
| 1867 (srcBlueMask == destBlueMask) && (srcAlphaMask == destAlphaMask)) { | |
| 1868 /*** Fast blit (straight copy) ***/ | |
| 1869 switch (sbpp) { | |
| 1870 case 1: | |
| 1871 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 1872 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 1873 destData[dp] = srcData[sp]; | |
| 1874 sp += (sfx >>> 16); | |
| 1875 } | |
| 1876 } | |
| 1877 break; | |
| 1878 case 2: | |
| 1879 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 1880 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 1881 destData[dp] = srcData[sp]; | |
| 1882 destData[dp + 1] = srcData[sp + 1]; | |
| 1883 sp += (sfx >>> 16) * 2; | |
| 1884 } | |
| 1885 } | |
| 1886 break; | |
| 1887 case 3: | |
| 1888 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 1889 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 1890 destData[dp] = srcData[sp]; | |
| 1891 destData[dp + 1] = srcData[sp + 1]; | |
| 1892 destData[dp + 2] = srcData[sp + 2]; | |
| 1893 sp += (sfx >>> 16) * 3; | |
| 1894 } | |
| 1895 } | |
| 1896 break; | |
| 1897 case 4: | |
| 1898 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 1899 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 1900 destData[dp] = srcData[sp]; | |
| 1901 destData[dp + 1] = srcData[sp + 1]; | |
| 1902 destData[dp + 2] = srcData[sp + 2]; | |
| 1903 destData[dp + 3] = srcData[sp + 3]; | |
| 1904 sp += (sfx >>> 16) * 4; | |
| 1905 } | |
| 1906 } | |
| 1907 break; | |
| 1908 } | |
| 1909 return; | |
| 1910 } | |
| 1911 /*** Comprehensive blit (apply transformations) ***/ | |
| 1912 int srcRedShift = getChannelShift(srcRedMask); | |
| 1913 byte[] srcReds = ANY_TO_EIGHT[getChannelWidth(srcRedMask, srcRedShift)]; | |
| 1914 int srcGreenShift = getChannelShift(srcGreenMask); | |
| 1915 byte[] srcGreens = ANY_TO_EIGHT[getChannelWidth(srcGreenMask, srcGreenShift)]; | |
| 1916 int srcBlueShift = getChannelShift(srcBlueMask); | |
| 1917 byte[] srcBlues = ANY_TO_EIGHT[getChannelWidth(srcBlueMask, srcBlueShift)]; | |
| 1918 int srcAlphaShift = getChannelShift(srcAlphaMask); | |
| 1919 byte[] srcAlphas = ANY_TO_EIGHT[getChannelWidth(srcAlphaMask, srcAlphaShift)]; | |
| 1920 | |
| 1921 int destRedShift = getChannelShift(destRedMask); | |
| 1922 int destRedWidth = getChannelWidth(destRedMask, destRedShift); | |
| 1923 byte[] destReds = ANY_TO_EIGHT[destRedWidth]; | |
| 1924 int destRedPreShift = 8 - destRedWidth; | |
| 1925 int destGreenShift = getChannelShift(destGreenMask); | |
| 1926 int destGreenWidth = getChannelWidth(destGreenMask, destGreenShift); | |
| 1927 byte[] destGreens = ANY_TO_EIGHT[destGreenWidth]; | |
| 1928 int destGreenPreShift = 8 - destGreenWidth; | |
| 1929 int destBlueShift = getChannelShift(destBlueMask); | |
| 1930 int destBlueWidth = getChannelWidth(destBlueMask, destBlueShift); | |
| 1931 byte[] destBlues = ANY_TO_EIGHT[destBlueWidth]; | |
| 1932 int destBluePreShift = 8 - destBlueWidth; | |
| 1933 int destAlphaShift = getChannelShift(destAlphaMask); | |
| 1934 int destAlphaWidth = getChannelWidth(destAlphaMask, destAlphaShift); | |
| 1935 byte[] destAlphas = ANY_TO_EIGHT[destAlphaWidth]; | |
| 1936 int destAlphaPreShift = 8 - destAlphaWidth; | |
| 1937 | |
| 1938 int ap = apr, alpha = alphaMode; | |
| 1939 int r = 0, g = 0, b = 0, a = 0; | |
| 1940 int rq = 0, gq = 0, bq = 0, aq = 0; | |
| 1941 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, | |
| 1942 sp = spr += (sfy >>> 16) * srcStride, | |
| 1943 ap = apr += (sfy >>> 16) * alphaStride, | |
| 1944 sfy = (sfy & 0xffff) + sfyi, | |
| 1945 dp = dpr += dpryi) { | |
| 1946 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, | |
| 1947 dp += dprxi, | |
| 1948 sfx = (sfx & 0xffff) + sfxi) { | |
| 1949 /*** READ NEXT PIXEL ***/ | |
| 1950 switch (stype) { | |
| 1951 case TYPE_GENERIC_8: { | |
| 1952 int data = srcData[sp] & 0xff; | |
| 1953 sp += (sfx >>> 16); | |
| 1954 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 1955 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 1956 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 1957 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 1958 } break; | |
| 1959 case TYPE_GENERIC_16_MSB: { | |
| 1960 int data = ((srcData[sp] & 0xff) << 8) | (srcData[sp + 1] & 0xff); | |
| 1961 sp += (sfx >>> 16) * 2; | |
| 1962 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 1963 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 1964 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 1965 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 1966 } break; | |
| 1967 case TYPE_GENERIC_16_LSB: { | |
| 1968 int data = ((srcData[sp + 1] & 0xff) << 8) | (srcData[sp] & 0xff); | |
| 1969 sp += (sfx >>> 16) * 2; | |
| 1970 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 1971 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 1972 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 1973 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 1974 } break; | |
| 1975 case TYPE_GENERIC_24: { | |
| 1976 int data = (( ((srcData[sp] & 0xff) << 8) | | |
| 1977 (srcData[sp + 1] & 0xff)) << 8) | | |
| 1978 (srcData[sp + 2] & 0xff); | |
| 1979 sp += (sfx >>> 16) * 3; | |
| 1980 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 1981 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 1982 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 1983 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 1984 } break; | |
| 1985 case TYPE_GENERIC_32_MSB: { | |
| 1986 int data = (( (( ((srcData[sp] & 0xff) << 8) | | |
| 1987 (srcData[sp + 1] & 0xff)) << 8) | | |
| 1988 (srcData[sp + 2] & 0xff)) << 8) | | |
| 1989 (srcData[sp + 3] & 0xff); | |
| 1990 sp += (sfx >>> 16) * 4; | |
| 1991 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 1992 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 1993 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 1994 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 1995 } break; | |
| 1996 case TYPE_GENERIC_32_LSB: { | |
| 1997 int data = (( (( ((srcData[sp + 3] & 0xff) << 8) | | |
| 1998 (srcData[sp + 2] & 0xff)) << 8) | | |
| 1999 (srcData[sp + 1] & 0xff)) << 8) | | |
| 2000 (srcData[sp] & 0xff); | |
| 2001 sp += (sfx >>> 16) * 4; | |
| 2002 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 2003 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 2004 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 2005 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 2006 } break; | |
| 2007 } | |
| 2008 | |
| 2009 /*** DO SPECIAL PROCESSING IF REQUIRED ***/ | |
| 2010 switch (alphaMode) { | |
| 2011 case ALPHA_CHANNEL_SEPARATE: | |
| 2012 alpha = ((alphaData[ap] & 0xff) << 16) / 255; | |
| 2013 ap += (sfx >> 16); | |
| 2014 break; | |
| 2015 case ALPHA_CHANNEL_SOURCE: | |
| 2016 alpha = (a << 16) / 255; | |
| 2017 break; | |
| 2018 case ALPHA_MASK_UNPACKED: | |
| 2019 alpha = (alphaData[ap] != 0) ? 0x10000 : 0; | |
| 2020 ap += (sfx >> 16); | |
| 2021 break; | |
| 2022 case ALPHA_MASK_PACKED: | |
| 2023 alpha = (alphaData[ap >> 3] << ((ap & 7) + 9)) & 0x10000; | |
| 2024 ap += (sfx >> 16); | |
| 2025 break; | |
| 2026 case ALPHA_MASK_RGB: | |
| 2027 alpha = 0x10000; | |
| 2028 for (int i = 0; i < alphaData.length; i += 3) { | |
| 2029 if ((r == alphaData[i]) && (g == alphaData[i + 1]) && (b == alphaData[i + 2])) { | |
| 2030 alpha = 0x0000; | |
| 2031 break; | |
| 2032 } | |
| 2033 } | |
| 2034 break; | |
| 2035 } | |
| 2036 if (alpha != 0x10000) { | |
| 2037 if (alpha == 0x0000) continue; | |
| 2038 switch (dtype) { | |
| 2039 case TYPE_GENERIC_8: { | |
| 2040 int data = destData[dp] & 0xff; | |
| 2041 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2042 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2043 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2044 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2045 } break; | |
| 2046 case TYPE_GENERIC_16_MSB: { | |
| 2047 int data = ((destData[dp] & 0xff) << 8) | (destData[dp + 1] & 0xff); | |
| 2048 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2049 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2050 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2051 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2052 } break; | |
| 2053 case TYPE_GENERIC_16_LSB: { | |
| 2054 int data = ((destData[dp + 1] & 0xff) << 8) | (destData[dp] & 0xff); | |
| 2055 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2056 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2057 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2058 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2059 } break; | |
| 2060 case TYPE_GENERIC_24: { | |
| 2061 int data = (( ((destData[dp] & 0xff) << 8) | | |
| 2062 (destData[dp + 1] & 0xff)) << 8) | | |
| 2063 (destData[dp + 2] & 0xff); | |
| 2064 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2065 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2066 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2067 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2068 } break; | |
| 2069 case TYPE_GENERIC_32_MSB: { | |
| 2070 int data = (( (( ((destData[dp] & 0xff) << 8) | | |
| 2071 (destData[dp + 1] & 0xff)) << 8) | | |
| 2072 (destData[dp + 2] & 0xff)) << 8) | | |
| 2073 (destData[dp + 3] & 0xff); | |
| 2074 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2075 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2076 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2077 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2078 } break; | |
| 2079 case TYPE_GENERIC_32_LSB: { | |
| 2080 int data = (( (( ((destData[dp + 3] & 0xff) << 8) | | |
| 2081 (destData[dp + 2] & 0xff)) << 8) | | |
| 2082 (destData[dp + 1] & 0xff)) << 8) | | |
| 2083 (destData[dp] & 0xff); | |
| 2084 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2085 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2086 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2087 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2088 } break; | |
| 2089 } | |
| 2090 // Perform alpha blending | |
| 2091 a = aq + ((a - aq) * alpha >> 16); | |
| 2092 r = rq + ((r - rq) * alpha >> 16); | |
| 2093 g = gq + ((g - gq) * alpha >> 16); | |
| 2094 b = bq + ((b - bq) * alpha >> 16); | |
| 2095 } | |
| 2096 | |
| 2097 /*** WRITE NEXT PIXEL ***/ | |
| 2098 int data = | |
| 2099 (r >>> destRedPreShift << destRedShift) | | |
| 2100 (g >>> destGreenPreShift << destGreenShift) | | |
| 2101 (b >>> destBluePreShift << destBlueShift) | | |
| 2102 (a >>> destAlphaPreShift << destAlphaShift); | |
| 2103 switch (dtype) { | |
| 2104 case TYPE_GENERIC_8: { | |
| 2105 destData[dp] = cast(byte) data; | |
| 2106 } break; | |
| 2107 case TYPE_GENERIC_16_MSB: { | |
| 2108 destData[dp] = cast(byte) (data >>> 8); | |
| 2109 destData[dp + 1] = cast(byte) (data & 0xff); | |
| 2110 } break; | |
| 2111 case TYPE_GENERIC_16_LSB: { | |
| 2112 destData[dp] = cast(byte) (data & 0xff); | |
| 2113 destData[dp + 1] = cast(byte) (data >>> 8); | |
| 2114 } break; | |
| 2115 case TYPE_GENERIC_24: { | |
| 2116 destData[dp] = cast(byte) (data >>> 16); | |
| 2117 destData[dp + 1] = cast(byte) (data >>> 8); | |
| 2118 destData[dp + 2] = cast(byte) (data & 0xff); | |
| 2119 } break; | |
| 2120 case TYPE_GENERIC_32_MSB: { | |
| 2121 destData[dp] = cast(byte) (data >>> 24); | |
| 2122 destData[dp + 1] = cast(byte) (data >>> 16); | |
| 2123 destData[dp + 2] = cast(byte) (data >>> 8); | |
| 2124 destData[dp + 3] = cast(byte) (data & 0xff); | |
| 2125 } break; | |
| 2126 case TYPE_GENERIC_32_LSB: { | |
| 2127 destData[dp] = cast(byte) (data & 0xff); | |
| 2128 destData[dp + 1] = cast(byte) (data >>> 8); | |
| 2129 destData[dp + 2] = cast(byte) (data >>> 16); | |
| 2130 destData[dp + 3] = cast(byte) (data >>> 24); | |
| 2131 } break; | |
| 2132 } | |
| 2133 } | |
| 2134 } | |
| 2135 } | |
| 2136 | |
| 2137 /** | |
| 2138 * Blits an index palette image into an index palette image. | |
| 2139 * <p> | |
| 2140 * Note: The source and destination red, green, and blue | |
| 2141 * arrays may be null if no alpha blending or dither is to be | |
| 2142 * performed. | |
| 2143 * </p> | |
| 2144 * | |
| 2145 * @param op the blitter operation: a combination of BLIT_xxx flags | |
| 2146 * (see BLIT_xxx constants) | |
| 2147 * @param srcData the source byte array containing image data | |
| 2148 * @param srcDepth the source depth: one of 1, 2, 4, 8 | |
| 2149 * @param srcStride the source number of bytes per line | |
| 2150 * @param srcOrder the source byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 2151 * ignored if srcDepth is not 1 | |
| 2152 * @param srcX the top-left x-coord of the source blit region | |
| 2153 * @param srcY the top-left y-coord of the source blit region | |
| 2154 * @param srcWidth the width of the source blit region | |
| 2155 * @param srcHeight the height of the source blit region | |
| 2156 * @param srcReds the source palette red component intensities | |
| 2157 * @param srcGreens the source palette green component intensities | |
| 2158 * @param srcBlues the source palette blue component intensities | |
| 2159 * @param alphaMode the alpha blending or mask mode, may be | |
| 2160 * an integer 0-255 for global alpha; ignored if BLIT_ALPHA | |
| 2161 * not specified in the blitter operations | |
| 2162 * (see ALPHA_MODE_xxx constants) | |
| 2163 * @param alphaData the alpha blending or mask data, varies depending | |
| 2164 * on the value of alphaMode and sometimes ignored | |
| 2165 * @param alphaStride the alpha data number of bytes per line | |
| 2166 * @param alphaX the top-left x-coord of the alpha blit region | |
| 2167 * @param alphaY the top-left y-coord of the alpha blit region | |
| 2168 * @param destData the destination byte array containing image data | |
| 2169 * @param destDepth the destination depth: one of 1, 2, 4, 8 | |
| 2170 * @param destStride the destination number of bytes per line | |
| 2171 * @param destOrder the destination byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 2172 * ignored if destDepth is not 1 | |
| 2173 * @param destX the top-left x-coord of the destination blit region | |
| 2174 * @param destY the top-left y-coord of the destination blit region | |
| 2175 * @param destWidth the width of the destination blit region | |
| 2176 * @param destHeight the height of the destination blit region | |
| 2177 * @param destReds the destination palette red component intensities | |
| 2178 * @param destGreens the destination palette green component intensities | |
| 2179 * @param destBlues the destination palette blue component intensities | |
| 2180 * @param flipX if true the resulting image is flipped along the vertical axis | |
| 2181 * @param flipY if true the resulting image is flipped along the horizontal axis | |
| 2182 */ | |
| 2183 static void blit(int op, | |
| 2184 byte[] srcData, int srcDepth, int srcStride, int srcOrder, | |
| 2185 int srcX, int srcY, int srcWidth, int srcHeight, | |
| 2186 byte[] srcReds, byte[] srcGreens, byte[] srcBlues, | |
| 2187 int alphaMode, byte[] alphaData, int alphaStride, int alphaX, int alphaY, | |
| 2188 byte[] destData, int destDepth, int destStride, int destOrder, | |
| 2189 int destX, int destY, int destWidth, int destHeight, | |
| 2190 byte[] destReds, byte[] destGreens, byte[] destBlues, | |
| 2191 bool flipX, bool flipY) { | |
| 2192 if ((destWidth <= 0) || (destHeight <= 0) || (alphaMode == ALPHA_TRANSPARENT)) return; | |
| 2193 | |
| 2194 /*** Prepare scaling data ***/ | |
| 2195 int dwm1 = destWidth - 1; | |
| 2196 int sfxi = (dwm1 != 0) ? cast(int)(((cast(long)srcWidth << 16) - 1) / dwm1) : 0; | |
| 2197 int dhm1 = destHeight - 1; | |
| 2198 int sfyi = (dhm1 != 0) ? cast(int)(((cast(long)srcHeight << 16) - 1) / dhm1) : 0; | |
| 2199 | |
| 2200 /*** Prepare source-related data ***/ | |
| 2201 int stype; | |
| 2202 switch (srcDepth) { | |
| 2203 case 8: | |
| 2204 stype = TYPE_INDEX_8; | |
| 2205 break; | |
| 2206 case 4: | |
| 2207 srcStride <<= 1; | |
| 2208 stype = TYPE_INDEX_4; | |
| 2209 break; | |
| 2210 case 2: | |
| 2211 srcStride <<= 2; | |
| 2212 stype = TYPE_INDEX_2; | |
| 2213 break; | |
| 2214 case 1: | |
| 2215 srcStride <<= 3; | |
| 2216 stype = (srcOrder == MSB_FIRST) ? TYPE_INDEX_1_MSB : TYPE_INDEX_1_LSB; | |
| 2217 break; | |
| 2218 default: | |
| 2219 //throw new IllegalArgumentException("Invalid source type"); | |
| 2220 return; | |
| 2221 } | |
| 2222 int spr = srcY * srcStride + srcX; | |
| 2223 | |
| 2224 /*** Prepare destination-related data ***/ | |
| 2225 int dtype; | |
| 2226 switch (destDepth) { | |
| 2227 case 8: | |
| 2228 dtype = TYPE_INDEX_8; | |
| 2229 break; | |
| 2230 case 4: | |
| 2231 destStride <<= 1; | |
| 2232 dtype = TYPE_INDEX_4; | |
| 2233 break; | |
| 2234 case 2: | |
| 2235 destStride <<= 2; | |
| 2236 dtype = TYPE_INDEX_2; | |
| 2237 break; | |
| 2238 case 1: | |
| 2239 destStride <<= 3; | |
| 2240 dtype = (destOrder == MSB_FIRST) ? TYPE_INDEX_1_MSB : TYPE_INDEX_1_LSB; | |
| 2241 break; | |
| 2242 default: | |
| 2243 //throw new IllegalArgumentException("Invalid source type"); | |
| 2244 return; | |
| 2245 } | |
| 2246 int dpr = ((flipY) ? destY + dhm1 : destY) * destStride + ((flipX) ? destX + dwm1 : destX); | |
| 2247 int dprxi = (flipX) ? -1 : 1; | |
| 2248 int dpryi = (flipY) ? -destStride : destStride; | |
| 2249 | |
| 2250 /*** Prepare special processing data ***/ | |
| 2251 int apr; | |
| 2252 if ((op & BLIT_ALPHA) != 0) { | |
| 2253 switch (alphaMode) { | |
| 2254 case ALPHA_MASK_UNPACKED: | |
| 2255 case ALPHA_CHANNEL_SEPARATE: | |
| 2256 if (alphaData == null) alphaMode = 0x10000; | |
| 2257 apr = alphaY * alphaStride + alphaX; | |
| 2258 break; | |
| 2259 case ALPHA_MASK_PACKED: | |
| 2260 if (alphaData == null) alphaMode = 0x10000; | |
| 2261 alphaStride <<= 3; | |
| 2262 apr = alphaY * alphaStride + alphaX; | |
| 2263 break; | |
| 2264 case ALPHA_MASK_INDEX: | |
| 2265 case ALPHA_MASK_RGB: | |
| 2266 if (alphaData == null) alphaMode = 0x10000; | |
| 2267 apr = 0; | |
| 2268 break; | |
| 2269 default: | |
| 2270 alphaMode = (alphaMode << 16) / 255; // prescale | |
| 2271 case ALPHA_CHANNEL_SOURCE: | |
| 2272 apr = 0; | |
| 2273 break; | |
| 2274 } | |
| 2275 } else { | |
| 2276 alphaMode = 0x10000; | |
| 2277 apr = 0; | |
| 2278 } | |
| 2279 bool ditherEnabled = (op & BLIT_DITHER) != 0; | |
| 2280 | |
| 2281 /*** Blit ***/ | |
| 2282 int dp = dpr; | |
| 2283 int sp = spr; | |
| 2284 int ap = apr; | |
| 2285 int destPaletteSize = 1 << destDepth; | |
| 2286 if ((destReds != null) && (destReds.length < destPaletteSize)) destPaletteSize = destReds.length; | |
| 2287 byte[] paletteMapping = null; | |
| 2288 bool isExactPaletteMapping = true; | |
| 2289 switch (alphaMode) { | |
| 2290 case 0x10000: | |
| 2291 /*** If the palettes and formats are equivalent use a one-to-one mapping ***/ | |
| 2292 if ((stype == dtype) && | |
| 2293 (srcReds == destReds) && (srcGreens == destGreens) && (srcBlues == destBlues)) { | |
| 2294 paletteMapping = ONE_TO_ONE_MAPPING; | |
| 2295 break; | |
| 2296 /*** If palettes have not been supplied, supply a suitable mapping ***/ | |
| 2297 } else if ((srcReds == null) || (destReds == null)) { | |
| 2298 if (srcDepth <= destDepth) { | |
| 2299 paletteMapping = ONE_TO_ONE_MAPPING; | |
| 2300 } else { | |
| 2301 paletteMapping = new byte[1 << srcDepth]; | |
| 2302 int mask = (0xff << destDepth) >>> 8; | |
| 2303 for (int i = 0; i < paletteMapping.length; ++i) paletteMapping[i] = cast(byte)(i & mask); | |
| 2304 } | |
| 2305 break; | |
| 2306 } | |
| 2307 case ALPHA_MASK_UNPACKED: | |
| 2308 case ALPHA_MASK_PACKED: | |
| 2309 case ALPHA_MASK_INDEX: | |
| 2310 case ALPHA_MASK_RGB: | |
| 2311 /*** Generate a palette mapping ***/ | |
| 2312 int srcPaletteSize = 1 << srcDepth; | |
| 2313 paletteMapping = new byte[srcPaletteSize]; | |
| 2314 if ((srcReds != null) && (srcReds.length < srcPaletteSize)) srcPaletteSize = srcReds.length; | |
| 2315 for (int i = 0, r, g, b, index; i < srcPaletteSize; ++i) { | |
| 2316 r = srcReds[i] & 0xff; | |
| 2317 g = srcGreens[i] & 0xff; | |
| 2318 b = srcBlues[i] & 0xff; | |
| 2319 index = 0; | |
| 2320 int minDistance = 0x7fffffff; | |
| 2321 for (int j = 0, dr, dg, db, distance; j < destPaletteSize; ++j) { | |
| 2322 dr = (destReds[j] & 0xff) - r; | |
| 2323 dg = (destGreens[j] & 0xff) - g; | |
| 2324 db = (destBlues[j] & 0xff) - b; | |
| 2325 distance = dr * dr + dg * dg + db * db; | |
| 2326 if (distance < minDistance) { | |
| 2327 index = j; | |
| 2328 if (distance == 0) break; | |
| 2329 minDistance = distance; | |
| 2330 } | |
| 2331 } | |
| 2332 paletteMapping[i] = cast(byte)index; | |
| 2333 if (minDistance != 0) isExactPaletteMapping = false; | |
| 2334 } | |
| 2335 break; | |
| 2336 } | |
| 2337 if ((paletteMapping != null) && (isExactPaletteMapping || ! ditherEnabled)) { | |
| 2338 if ((stype == dtype) && (alphaMode == 0x10000)) { | |
| 2339 /*** Fast blit (copy w/ mapping) ***/ | |
| 2340 switch (stype) { | |
| 2341 case TYPE_INDEX_8: | |
| 2342 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 2343 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 2344 destData[dp] = paletteMapping[srcData[sp] & 0xff]; | |
| 2345 sp += (sfx >>> 16); | |
| 2346 } | |
| 2347 } | |
| 2348 break; | |
| 2349 case TYPE_INDEX_4: | |
| 2350 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 2351 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 2352 int v; | |
| 2353 if ((sp & 1) != 0) v = paletteMapping[srcData[sp >> 1] & 0x0f]; | |
| 2354 else v = (srcData[sp >> 1] >>> 4) & 0x0f; | |
| 2355 sp += (sfx >>> 16); | |
| 2356 if ((dp & 1) != 0) destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0xf0) | v); | |
| 2357 else destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0x0f) | (v << 4)); | |
| 2358 } | |
| 2359 } | |
| 2360 break; | |
| 2361 case TYPE_INDEX_2: | |
| 2362 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 2363 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 2364 int index = paletteMapping[(srcData[sp >> 2] >>> (6 - (sp & 3) * 2)) & 0x03]; | |
| 2365 sp += (sfx >>> 16); | |
| 2366 int shift = 6 - (dp & 3) * 2; | |
| 2367 destData[dp >> 2] = cast(byte)(destData[dp >> 2] & ~(0x03 << shift) | (index << shift)); | |
| 2368 } | |
| 2369 } | |
| 2370 break; | |
| 2371 case TYPE_INDEX_1_MSB: | |
| 2372 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 2373 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 2374 int index = paletteMapping[(srcData[sp >> 3] >>> (7 - (sp & 7))) & 0x01]; | |
| 2375 sp += (sfx >>> 16); | |
| 2376 int shift = 7 - (dp & 7); | |
| 2377 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (index << shift)); | |
| 2378 } | |
| 2379 } | |
| 2380 break; | |
| 2381 case TYPE_INDEX_1_LSB: | |
| 2382 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, sp = spr += (sfy >>> 16) * srcStride, sfy = (sfy & 0xffff) + sfyi, dp = dpr += dpryi) { | |
| 2383 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, dp += dprxi, sfx = (sfx & 0xffff) + sfxi) { | |
| 2384 int index = paletteMapping[(srcData[sp >> 3] >>> (sp & 7)) & 0x01]; | |
| 2385 sp += (sfx >>> 16); | |
| 2386 int shift = dp & 7; | |
| 2387 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (index << shift)); | |
| 2388 } | |
| 2389 } | |
| 2390 break; | |
| 2391 } | |
| 2392 } else { | |
| 2393 /*** Convert between indexed modes using mapping and mask ***/ | |
| 2394 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, | |
| 2395 sp = spr += (sfy >>> 16) * srcStride, | |
| 2396 sfy = (sfy & 0xffff) + sfyi, | |
| 2397 dp = dpr += dpryi) { | |
| 2398 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, | |
| 2399 dp += dprxi, | |
| 2400 sfx = (sfx & 0xffff) + sfxi) { | |
| 2401 int index; | |
| 2402 /*** READ NEXT PIXEL ***/ | |
| 2403 switch (stype) { | |
| 2404 case TYPE_INDEX_8: | |
| 2405 index = srcData[sp] & 0xff; | |
| 2406 sp += (sfx >>> 16); | |
| 2407 break; | |
| 2408 case TYPE_INDEX_4: | |
| 2409 if ((sp & 1) != 0) index = srcData[sp >> 1] & 0x0f; | |
| 2410 else index = (srcData[sp >> 1] >>> 4) & 0x0f; | |
| 2411 sp += (sfx >>> 16); | |
| 2412 break; | |
| 2413 case TYPE_INDEX_2: | |
| 2414 index = (srcData[sp >> 2] >>> (6 - (sp & 3) * 2)) & 0x03; | |
| 2415 sp += (sfx >>> 16); | |
| 2416 break; | |
| 2417 case TYPE_INDEX_1_MSB: | |
| 2418 index = (srcData[sp >> 3] >>> (7 - (sp & 7))) & 0x01; | |
| 2419 sp += (sfx >>> 16); | |
| 2420 break; | |
| 2421 case TYPE_INDEX_1_LSB: | |
| 2422 index = (srcData[sp >> 3] >>> (sp & 7)) & 0x01; | |
| 2423 sp += (sfx >>> 16); | |
| 2424 break; | |
| 2425 default: | |
| 2426 return; | |
| 2427 } | |
| 2428 /*** APPLY MASK ***/ | |
| 2429 switch (alphaMode) { | |
| 2430 case ALPHA_MASK_UNPACKED: { | |
| 2431 byte mask = alphaData[ap]; | |
| 2432 ap += (sfx >> 16); | |
| 2433 if (mask == 0) continue; | |
| 2434 } break; | |
| 2435 case ALPHA_MASK_PACKED: { | |
| 2436 int mask = alphaData[ap >> 3] & (1 << (ap & 7)); | |
| 2437 ap += (sfx >> 16); | |
| 2438 if (mask == 0) continue; | |
| 2439 } break; | |
| 2440 case ALPHA_MASK_INDEX: { | |
| 2441 int i = 0; | |
| 2442 while (i < alphaData.length) { | |
| 2443 if (index == (alphaData[i] & 0xff)) break; | |
| 2444 } | |
| 2445 if (i < alphaData.length) continue; | |
| 2446 } break; | |
| 2447 case ALPHA_MASK_RGB: { | |
| 2448 byte r = srcReds[index], g = srcGreens[index], b = srcBlues[index]; | |
| 2449 int i = 0; | |
| 2450 while (i < alphaData.length) { | |
| 2451 if ((r == alphaData[i]) && (g == alphaData[i + 1]) && (b == alphaData[i + 2])) break; | |
| 2452 i += 3; | |
| 2453 } | |
| 2454 if (i < alphaData.length) continue; | |
| 2455 } break; | |
| 2456 } | |
| 2457 index = paletteMapping[index] & 0xff; | |
| 2458 | |
| 2459 /*** WRITE NEXT PIXEL ***/ | |
| 2460 switch (dtype) { | |
| 2461 case TYPE_INDEX_8: | |
| 2462 destData[dp] = cast(byte) index; | |
| 2463 break; | |
| 2464 case TYPE_INDEX_4: | |
| 2465 if ((dp & 1) != 0) destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0xf0) | index); | |
| 2466 else destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0x0f) | (index << 4)); | |
| 2467 break; | |
| 2468 case TYPE_INDEX_2: { | |
| 2469 int shift = 6 - (dp & 3) * 2; | |
| 2470 destData[dp >> 2] = cast(byte)(destData[dp >> 2] & ~(0x03 << shift) | (index << shift)); | |
| 2471 } break; | |
| 2472 case TYPE_INDEX_1_MSB: { | |
| 2473 int shift = 7 - (dp & 7); | |
| 2474 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (index << shift)); | |
| 2475 } break; | |
| 2476 case TYPE_INDEX_1_LSB: { | |
| 2477 int shift = dp & 7; | |
| 2478 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (index << shift)); | |
| 2479 } break; | |
| 2480 } | |
| 2481 } | |
| 2482 } | |
| 2483 } | |
| 2484 return; | |
| 2485 } | |
| 2486 | |
| 2487 /*** Comprehensive blit (apply transformations) ***/ | |
| 2488 int alpha = alphaMode; | |
| 2489 int index = 0; | |
| 2490 int indexq = 0; | |
| 2491 int lastindex = 0, lastr = -1, lastg = -1, lastb = -1; | |
| 2492 int[] rerr, gerr, berr; | |
| 2493 if (ditherEnabled) { | |
| 2494 rerr = new int[destWidth + 2]; | |
| 2495 gerr = new int[destWidth + 2]; | |
| 2496 berr = new int[destWidth + 2]; | |
| 2497 } else { | |
| 2498 rerr = null; gerr = null; berr = null; | |
| 2499 } | |
| 2500 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, | |
| 2501 sp = spr += (sfy >>> 16) * srcStride, | |
| 2502 ap = apr += (sfy >>> 16) * alphaStride, | |
| 2503 sfy = (sfy & 0xffff) + sfyi, | |
| 2504 dp = dpr += dpryi) { | |
| 2505 int lrerr = 0, lgerr = 0, lberr = 0; | |
| 2506 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, | |
| 2507 dp += dprxi, | |
| 2508 sfx = (sfx & 0xffff) + sfxi) { | |
| 2509 /*** READ NEXT PIXEL ***/ | |
| 2510 switch (stype) { | |
| 2511 case TYPE_INDEX_8: | |
| 2512 index = srcData[sp] & 0xff; | |
| 2513 sp += (sfx >>> 16); | |
| 2514 break; | |
| 2515 case TYPE_INDEX_4: | |
| 2516 if ((sp & 1) != 0) index = srcData[sp >> 1] & 0x0f; | |
| 2517 else index = (srcData[sp >> 1] >>> 4) & 0x0f; | |
| 2518 sp += (sfx >>> 16); | |
| 2519 break; | |
| 2520 case TYPE_INDEX_2: | |
| 2521 index = (srcData[sp >> 2] >>> (6 - (sp & 3) * 2)) & 0x03; | |
| 2522 sp += (sfx >>> 16); | |
| 2523 break; | |
| 2524 case TYPE_INDEX_1_MSB: | |
| 2525 index = (srcData[sp >> 3] >>> (7 - (sp & 7))) & 0x01; | |
| 2526 sp += (sfx >>> 16); | |
| 2527 break; | |
| 2528 case TYPE_INDEX_1_LSB: | |
| 2529 index = (srcData[sp >> 3] >>> (sp & 7)) & 0x01; | |
| 2530 sp += (sfx >>> 16); | |
| 2531 break; | |
| 2532 } | |
| 2533 | |
| 2534 /*** DO SPECIAL PROCESSING IF REQUIRED ***/ | |
| 2535 int r = srcReds[index] & 0xff, g = srcGreens[index] & 0xff, b = srcBlues[index] & 0xff; | |
| 2536 switch (alphaMode) { | |
| 2537 case ALPHA_CHANNEL_SEPARATE: | |
| 2538 alpha = ((alphaData[ap] & 0xff) << 16) / 255; | |
| 2539 ap += (sfx >> 16); | |
| 2540 break; | |
| 2541 case ALPHA_MASK_UNPACKED: | |
| 2542 alpha = (alphaData[ap] != 0) ? 0x10000 : 0; | |
| 2543 ap += (sfx >> 16); | |
| 2544 break; | |
| 2545 case ALPHA_MASK_PACKED: | |
| 2546 alpha = (alphaData[ap >> 3] << ((ap & 7) + 9)) & 0x10000; | |
| 2547 ap += (sfx >> 16); | |
| 2548 break; | |
| 2549 case ALPHA_MASK_INDEX: { // could speed up using binary search if we sorted the indices | |
| 2550 int i = 0; | |
| 2551 while (i < alphaData.length) { | |
| 2552 if (index == (alphaData[i] & 0xff)) break; | |
| 2553 } | |
| 2554 if (i < alphaData.length) continue; | |
| 2555 } break; | |
| 2556 case ALPHA_MASK_RGB: { | |
| 2557 int i = 0; | |
| 2558 while (i < alphaData.length) { | |
| 2559 if ((r == (alphaData[i] & 0xff)) && | |
| 2560 (g == (alphaData[i + 1] & 0xff)) && | |
| 2561 (b == (alphaData[i + 2] & 0xff))) break; | |
| 2562 i += 3; | |
| 2563 } | |
| 2564 if (i < alphaData.length) continue; | |
| 2565 } break; | |
| 2566 } | |
| 2567 if (alpha != 0x10000) { | |
| 2568 if (alpha == 0x0000) continue; | |
| 2569 switch (dtype) { | |
| 2570 case TYPE_INDEX_8: | |
| 2571 indexq = destData[dp] & 0xff; | |
| 2572 break; | |
| 2573 case TYPE_INDEX_4: | |
| 2574 if ((dp & 1) != 0) indexq = destData[dp >> 1] & 0x0f; | |
| 2575 else indexq = (destData[dp >> 1] >>> 4) & 0x0f; | |
| 2576 break; | |
| 2577 case TYPE_INDEX_2: | |
| 2578 indexq = (destData[dp >> 2] >>> (6 - (dp & 3) * 2)) & 0x03; | |
| 2579 break; | |
| 2580 case TYPE_INDEX_1_MSB: | |
| 2581 indexq = (destData[dp >> 3] >>> (7 - (dp & 7))) & 0x01; | |
| 2582 break; | |
| 2583 case TYPE_INDEX_1_LSB: | |
| 2584 indexq = (destData[dp >> 3] >>> (dp & 7)) & 0x01; | |
| 2585 break; | |
| 2586 } | |
| 2587 // Perform alpha blending | |
| 2588 int rq = destReds[indexq] & 0xff; | |
| 2589 int gq = destGreens[indexq] & 0xff; | |
| 2590 int bq = destBlues[indexq] & 0xff; | |
| 2591 r = rq + ((r - rq) * alpha >> 16); | |
| 2592 g = gq + ((g - gq) * alpha >> 16); | |
| 2593 b = bq + ((b - bq) * alpha >> 16); | |
| 2594 } | |
| 2595 | |
| 2596 /*** MAP COLOR TO THE PALETTE ***/ | |
| 2597 if (ditherEnabled) { | |
| 2598 // Floyd-Steinberg error diffusion | |
| 2599 r += rerr[dx] >> 4; | |
| 2600 if (r < 0) r = 0; else if (r > 255) r = 255; | |
| 2601 g += gerr[dx] >> 4; | |
| 2602 if (g < 0) g = 0; else if (g > 255) g = 255; | |
| 2603 b += berr[dx] >> 4; | |
| 2604 if (b < 0) b = 0; else if (b > 255) b = 255; | |
| 2605 rerr[dx] = lrerr; | |
| 2606 gerr[dx] = lgerr; | |
| 2607 berr[dx] = lberr; | |
| 2608 } | |
| 2609 if (r != lastr || g != lastg || b != lastb) { | |
| 2610 // moving the variable declarations out seems to make the JDK JIT happier... | |
| 2611 for (int j = 0, dr, dg, db, distance, minDistance = 0x7fffffff; j < destPaletteSize; ++j) { | |
| 2612 dr = (destReds[j] & 0xff) - r; | |
| 2613 dg = (destGreens[j] & 0xff) - g; | |
| 2614 db = (destBlues[j] & 0xff) - b; | |
| 2615 distance = dr * dr + dg * dg + db * db; | |
| 2616 if (distance < minDistance) { | |
| 2617 lastindex = j; | |
| 2618 if (distance == 0) break; | |
| 2619 minDistance = distance; | |
| 2620 } | |
| 2621 } | |
| 2622 lastr = r; lastg = g; lastb = b; | |
| 2623 } | |
| 2624 if (ditherEnabled) { | |
| 2625 // Floyd-Steinberg error diffusion, cont'd... | |
| 2626 int dxm1 = dx - 1, dxp1 = dx + 1; | |
| 2627 int acc; | |
| 2628 rerr[dxp1] += acc = (lrerr = r - (destReds[lastindex] & 0xff)) + lrerr + lrerr; | |
| 2629 rerr[dx] += acc += lrerr + lrerr; | |
| 2630 rerr[dxm1] += acc + lrerr + lrerr; | |
| 2631 gerr[dxp1] += acc = (lgerr = g - (destGreens[lastindex] & 0xff)) + lgerr + lgerr; | |
| 2632 gerr[dx] += acc += lgerr + lgerr; | |
| 2633 gerr[dxm1] += acc + lgerr + lgerr; | |
| 2634 berr[dxp1] += acc = (lberr = b - (destBlues[lastindex] & 0xff)) + lberr + lberr; | |
| 2635 berr[dx] += acc += lberr + lberr; | |
| 2636 berr[dxm1] += acc + lberr + lberr; | |
| 2637 } | |
| 2638 | |
| 2639 /*** WRITE NEXT PIXEL ***/ | |
| 2640 switch (dtype) { | |
| 2641 case TYPE_INDEX_8: | |
| 2642 destData[dp] = cast(byte) lastindex; | |
| 2643 break; | |
| 2644 case TYPE_INDEX_4: | |
| 2645 if ((dp & 1) != 0) destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0xf0) | lastindex); | |
| 2646 else destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0x0f) | (lastindex << 4)); | |
| 2647 break; | |
| 2648 case TYPE_INDEX_2: { | |
| 2649 int shift = 6 - (dp & 3) * 2; | |
| 2650 destData[dp >> 2] = cast(byte)(destData[dp >> 2] & ~(0x03 << shift) | (lastindex << shift)); | |
| 2651 } break; | |
| 2652 case TYPE_INDEX_1_MSB: { | |
| 2653 int shift = 7 - (dp & 7); | |
| 2654 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (lastindex << shift)); | |
| 2655 } break; | |
| 2656 case TYPE_INDEX_1_LSB: { | |
| 2657 int shift = dp & 7; | |
| 2658 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (lastindex << shift)); | |
| 2659 } break; | |
| 2660 } | |
| 2661 } | |
| 2662 } | |
| 2663 } | |
| 2664 | |
| 2665 /** | |
| 2666 * Blits an index palette image into a direct palette image. | |
| 2667 * <p> | |
| 2668 * Note: The source and destination masks and palettes must | |
| 2669 * always be fully specified. | |
| 2670 * </p> | |
| 2671 * | |
| 2672 * @param op the blitter operation: a combination of BLIT_xxx flags | |
| 2673 * (see BLIT_xxx constants) | |
| 2674 * @param srcData the source byte array containing image data | |
| 2675 * @param srcDepth the source depth: one of 1, 2, 4, 8 | |
| 2676 * @param srcStride the source number of bytes per line | |
| 2677 * @param srcOrder the source byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 2678 * ignored if srcDepth is not 1 | |
| 2679 * @param srcX the top-left x-coord of the source blit region | |
| 2680 * @param srcY the top-left y-coord of the source blit region | |
| 2681 * @param srcWidth the width of the source blit region | |
| 2682 * @param srcHeight the height of the source blit region | |
| 2683 * @param srcReds the source palette red component intensities | |
| 2684 * @param srcGreens the source palette green component intensities | |
| 2685 * @param srcBlues the source palette blue component intensities | |
| 2686 * @param alphaMode the alpha blending or mask mode, may be | |
| 2687 * an integer 0-255 for global alpha; ignored if BLIT_ALPHA | |
| 2688 * not specified in the blitter operations | |
| 2689 * (see ALPHA_MODE_xxx constants) | |
| 2690 * @param alphaData the alpha blending or mask data, varies depending | |
| 2691 * on the value of alphaMode and sometimes ignored | |
| 2692 * @param alphaStride the alpha data number of bytes per line | |
| 2693 * @param alphaX the top-left x-coord of the alpha blit region | |
| 2694 * @param alphaY the top-left y-coord of the alpha blit region | |
| 2695 * @param destData the destination byte array containing image data | |
| 2696 * @param destDepth the destination depth: one of 8, 16, 24, 32 | |
| 2697 * @param destStride the destination number of bytes per line | |
| 2698 * @param destOrder the destination byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 2699 * ignored if destDepth is not 16 or 32 | |
| 2700 * @param destX the top-left x-coord of the destination blit region | |
| 2701 * @param destY the top-left y-coord of the destination blit region | |
| 2702 * @param destWidth the width of the destination blit region | |
| 2703 * @param destHeight the height of the destination blit region | |
| 2704 * @param destRedMask the destination red channel mask | |
| 2705 * @param destGreenMask the destination green channel mask | |
| 2706 * @param destBlueMask the destination blue channel mask | |
| 2707 * @param flipX if true the resulting image is flipped along the vertical axis | |
| 2708 * @param flipY if true the resulting image is flipped along the horizontal axis | |
| 2709 */ | |
| 2710 static void blit(int op, | |
| 2711 byte[] srcData, int srcDepth, int srcStride, int srcOrder, | |
| 2712 int srcX, int srcY, int srcWidth, int srcHeight, | |
| 2713 byte[] srcReds, byte[] srcGreens, byte[] srcBlues, | |
| 2714 int alphaMode, byte[] alphaData, int alphaStride, int alphaX, int alphaY, | |
| 2715 byte[] destData, int destDepth, int destStride, int destOrder, | |
| 2716 int destX, int destY, int destWidth, int destHeight, | |
| 2717 int destRedMask, int destGreenMask, int destBlueMask, | |
| 2718 bool flipX, bool flipY) { | |
| 2719 if ((destWidth <= 0) || (destHeight <= 0) || (alphaMode == ALPHA_TRANSPARENT)) return; | |
| 2720 | |
| 2721 // these should be supplied as params later | |
| 2722 int destAlphaMask = 0; | |
| 2723 | |
| 2724 /*** Prepare scaling data ***/ | |
| 2725 int dwm1 = destWidth - 1; | |
| 2726 int sfxi = (dwm1 != 0) ? cast(int)(((cast(long)srcWidth << 16) - 1) / dwm1) : 0; | |
| 2727 int dhm1 = destHeight - 1; | |
| 2728 int sfyi = (dhm1 != 0) ? cast(int)(((cast(long)srcHeight << 16) - 1) / dhm1) : 0; | |
| 2729 | |
| 2730 /*** Prepare source-related data ***/ | |
| 2731 int stype; | |
| 2732 switch (srcDepth) { | |
| 2733 case 8: | |
| 2734 stype = TYPE_INDEX_8; | |
| 2735 break; | |
| 2736 case 4: | |
| 2737 srcStride <<= 1; | |
| 2738 stype = TYPE_INDEX_4; | |
| 2739 break; | |
| 2740 case 2: | |
| 2741 srcStride <<= 2; | |
| 2742 stype = TYPE_INDEX_2; | |
| 2743 break; | |
| 2744 case 1: | |
| 2745 srcStride <<= 3; | |
| 2746 stype = (srcOrder == MSB_FIRST) ? TYPE_INDEX_1_MSB : TYPE_INDEX_1_LSB; | |
| 2747 break; | |
| 2748 default: | |
| 2749 //throw new IllegalArgumentException("Invalid source type"); | |
| 2750 return; | |
| 2751 } | |
| 2752 int spr = srcY * srcStride + srcX; | |
| 2753 | |
| 2754 /*** Prepare destination-related data ***/ | |
| 2755 int dbpp, dtype; | |
| 2756 switch (destDepth) { | |
| 2757 case 8: | |
| 2758 dbpp = 1; | |
| 2759 dtype = TYPE_GENERIC_8; | |
| 2760 break; | |
| 2761 case 16: | |
| 2762 dbpp = 2; | |
| 2763 dtype = (destOrder == MSB_FIRST) ? TYPE_GENERIC_16_MSB : TYPE_GENERIC_16_LSB; | |
| 2764 break; | |
| 2765 case 24: | |
| 2766 dbpp = 3; | |
| 2767 dtype = TYPE_GENERIC_24; | |
| 2768 break; | |
| 2769 case 32: | |
| 2770 dbpp = 4; | |
| 2771 dtype = (destOrder == MSB_FIRST) ? TYPE_GENERIC_32_MSB : TYPE_GENERIC_32_LSB; | |
| 2772 break; | |
| 2773 default: | |
| 2774 //throw new IllegalArgumentException("Invalid destination type"); | |
| 2775 return; | |
| 2776 } | |
| 2777 int dpr = ((flipY) ? destY + dhm1 : destY) * destStride + ((flipX) ? destX + dwm1 : destX) * dbpp; | |
| 2778 int dprxi = (flipX) ? -dbpp : dbpp; | |
| 2779 int dpryi = (flipY) ? -destStride : destStride; | |
| 2780 | |
| 2781 /*** Prepare special processing data ***/ | |
| 2782 int apr; | |
| 2783 if ((op & BLIT_ALPHA) != 0) { | |
| 2784 switch (alphaMode) { | |
| 2785 case ALPHA_MASK_UNPACKED: | |
| 2786 case ALPHA_CHANNEL_SEPARATE: | |
| 2787 if (alphaData == null) alphaMode = 0x10000; | |
| 2788 apr = alphaY * alphaStride + alphaX; | |
| 2789 break; | |
| 2790 case ALPHA_MASK_PACKED: | |
| 2791 if (alphaData == null) alphaMode = 0x10000; | |
| 2792 alphaStride <<= 3; | |
| 2793 apr = alphaY * alphaStride + alphaX; | |
| 2794 break; | |
| 2795 case ALPHA_MASK_INDEX: | |
| 2796 case ALPHA_MASK_RGB: | |
| 2797 if (alphaData == null) alphaMode = 0x10000; | |
| 2798 apr = 0; | |
| 2799 break; | |
| 2800 default: | |
| 2801 alphaMode = (alphaMode << 16) / 255; // prescale | |
| 2802 case ALPHA_CHANNEL_SOURCE: | |
| 2803 apr = 0; | |
| 2804 break; | |
| 2805 } | |
| 2806 } else { | |
| 2807 alphaMode = 0x10000; | |
| 2808 apr = 0; | |
| 2809 } | |
| 2810 | |
| 2811 /*** Comprehensive blit (apply transformations) ***/ | |
| 2812 int destRedShift = getChannelShift(destRedMask); | |
| 2813 int destRedWidth = getChannelWidth(destRedMask, destRedShift); | |
| 2814 byte[] destReds = ANY_TO_EIGHT[destRedWidth]; | |
| 2815 int destRedPreShift = 8 - destRedWidth; | |
| 2816 int destGreenShift = getChannelShift(destGreenMask); | |
| 2817 int destGreenWidth = getChannelWidth(destGreenMask, destGreenShift); | |
| 2818 byte[] destGreens = ANY_TO_EIGHT[destGreenWidth]; | |
| 2819 int destGreenPreShift = 8 - destGreenWidth; | |
| 2820 int destBlueShift = getChannelShift(destBlueMask); | |
| 2821 int destBlueWidth = getChannelWidth(destBlueMask, destBlueShift); | |
| 2822 byte[] destBlues = ANY_TO_EIGHT[destBlueWidth]; | |
| 2823 int destBluePreShift = 8 - destBlueWidth; | |
| 2824 int destAlphaShift = getChannelShift(destAlphaMask); | |
| 2825 int destAlphaWidth = getChannelWidth(destAlphaMask, destAlphaShift); | |
| 2826 byte[] destAlphas = ANY_TO_EIGHT[destAlphaWidth]; | |
| 2827 int destAlphaPreShift = 8 - destAlphaWidth; | |
| 2828 | |
| 2829 int dp = dpr; | |
| 2830 int sp = spr; | |
| 2831 int ap = apr, alpha = alphaMode; | |
| 2832 int r = 0, g = 0, b = 0, a = 0, index = 0; | |
| 2833 int rq = 0, gq = 0, bq = 0, aq = 0; | |
| 2834 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, | |
| 2835 sp = spr += (sfy >>> 16) * srcStride, | |
| 2836 ap = apr += (sfy >>> 16) * alphaStride, | |
| 2837 sfy = (sfy & 0xffff) + sfyi, | |
| 2838 dp = dpr += dpryi) { | |
| 2839 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, | |
| 2840 dp += dprxi, | |
| 2841 sfx = (sfx & 0xffff) + sfxi) { | |
| 2842 /*** READ NEXT PIXEL ***/ | |
| 2843 switch (stype) { | |
| 2844 case TYPE_INDEX_8: | |
| 2845 index = srcData[sp] & 0xff; | |
| 2846 sp += (sfx >>> 16); | |
| 2847 break; | |
| 2848 case TYPE_INDEX_4: | |
| 2849 if ((sp & 1) != 0) index = srcData[sp >> 1] & 0x0f; | |
| 2850 else index = (srcData[sp >> 1] >>> 4) & 0x0f; | |
| 2851 sp += (sfx >>> 16); | |
| 2852 break; | |
| 2853 case TYPE_INDEX_2: | |
| 2854 index = (srcData[sp >> 2] >>> (6 - (sp & 3) * 2)) & 0x03; | |
| 2855 sp += (sfx >>> 16); | |
| 2856 break; | |
| 2857 case TYPE_INDEX_1_MSB: | |
| 2858 index = (srcData[sp >> 3] >>> (7 - (sp & 7))) & 0x01; | |
| 2859 sp += (sfx >>> 16); | |
| 2860 break; | |
| 2861 case TYPE_INDEX_1_LSB: | |
| 2862 index = (srcData[sp >> 3] >>> (sp & 7)) & 0x01; | |
| 2863 sp += (sfx >>> 16); | |
| 2864 break; | |
| 2865 } | |
| 2866 | |
| 2867 /*** DO SPECIAL PROCESSING IF REQUIRED ***/ | |
| 2868 r = srcReds[index] & 0xff; | |
| 2869 g = srcGreens[index] & 0xff; | |
| 2870 b = srcBlues[index] & 0xff; | |
| 2871 switch (alphaMode) { | |
| 2872 case ALPHA_CHANNEL_SEPARATE: | |
| 2873 alpha = ((alphaData[ap] & 0xff) << 16) / 255; | |
| 2874 ap += (sfx >> 16); | |
| 2875 break; | |
| 2876 case ALPHA_MASK_UNPACKED: | |
| 2877 alpha = (alphaData[ap] != 0) ? 0x10000 : 0; | |
| 2878 ap += (sfx >> 16); | |
| 2879 break; | |
| 2880 case ALPHA_MASK_PACKED: | |
| 2881 alpha = (alphaData[ap >> 3] << ((ap & 7) + 9)) & 0x10000; | |
| 2882 ap += (sfx >> 16); | |
| 2883 break; | |
| 2884 case ALPHA_MASK_INDEX: { // could speed up using binary search if we sorted the indices | |
| 2885 int i = 0; | |
| 2886 while (i < alphaData.length) { | |
| 2887 if (index == (alphaData[i] & 0xff)) break; | |
| 2888 } | |
| 2889 if (i < alphaData.length) continue; | |
| 2890 } break; | |
| 2891 case ALPHA_MASK_RGB: { | |
| 2892 int i = 0; | |
| 2893 while (i < alphaData.length) { | |
| 2894 if ((r == (alphaData[i] & 0xff)) && | |
| 2895 (g == (alphaData[i + 1] & 0xff)) && | |
| 2896 (b == (alphaData[i + 2] & 0xff))) break; | |
| 2897 i += 3; | |
| 2898 } | |
| 2899 if (i < alphaData.length) continue; | |
| 2900 } break; | |
| 2901 } | |
| 2902 if (alpha != 0x10000) { | |
| 2903 if (alpha == 0x0000) continue; | |
| 2904 switch (dtype) { | |
| 2905 case TYPE_GENERIC_8: { | |
| 2906 int data = destData[dp] & 0xff; | |
| 2907 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2908 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2909 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2910 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2911 } break; | |
| 2912 case TYPE_GENERIC_16_MSB: { | |
| 2913 int data = ((destData[dp] & 0xff) << 8) | (destData[dp + 1] & 0xff); | |
| 2914 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2915 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2916 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2917 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2918 } break; | |
| 2919 case TYPE_GENERIC_16_LSB: { | |
| 2920 int data = ((destData[dp + 1] & 0xff) << 8) | (destData[dp] & 0xff); | |
| 2921 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2922 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2923 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2924 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2925 } break; | |
| 2926 case TYPE_GENERIC_24: { | |
| 2927 int data = (( ((destData[dp] & 0xff) << 8) | | |
| 2928 (destData[dp + 1] & 0xff)) << 8) | | |
| 2929 (destData[dp + 2] & 0xff); | |
| 2930 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2931 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2932 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2933 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2934 } break; | |
| 2935 case TYPE_GENERIC_32_MSB: { | |
| 2936 int data = (( (( ((destData[dp] & 0xff) << 8) | | |
| 2937 (destData[dp + 1] & 0xff)) << 8) | | |
| 2938 (destData[dp + 2] & 0xff)) << 8) | | |
| 2939 (destData[dp + 3] & 0xff); | |
| 2940 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2941 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2942 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2943 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2944 } break; | |
| 2945 case TYPE_GENERIC_32_LSB: { | |
| 2946 int data = (( (( ((destData[dp + 3] & 0xff) << 8) | | |
| 2947 (destData[dp + 2] & 0xff)) << 8) | | |
| 2948 (destData[dp + 1] & 0xff)) << 8) | | |
| 2949 (destData[dp] & 0xff); | |
| 2950 rq = destReds[(data & destRedMask) >>> destRedShift] & 0xff; | |
| 2951 gq = destGreens[(data & destGreenMask) >>> destGreenShift] & 0xff; | |
| 2952 bq = destBlues[(data & destBlueMask) >>> destBlueShift] & 0xff; | |
| 2953 aq = destAlphas[(data & destAlphaMask) >>> destAlphaShift] & 0xff; | |
| 2954 } break; | |
| 2955 } | |
| 2956 // Perform alpha blending | |
| 2957 a = aq + ((a - aq) * alpha >> 16); | |
| 2958 r = rq + ((r - rq) * alpha >> 16); | |
| 2959 g = gq + ((g - gq) * alpha >> 16); | |
| 2960 b = bq + ((b - bq) * alpha >> 16); | |
| 2961 } | |
| 2962 | |
| 2963 /*** WRITE NEXT PIXEL ***/ | |
| 2964 int data = | |
| 2965 (r >>> destRedPreShift << destRedShift) | | |
| 2966 (g >>> destGreenPreShift << destGreenShift) | | |
| 2967 (b >>> destBluePreShift << destBlueShift) | | |
| 2968 (a >>> destAlphaPreShift << destAlphaShift); | |
| 2969 switch (dtype) { | |
| 2970 case TYPE_GENERIC_8: { | |
| 2971 destData[dp] = cast(byte) data; | |
| 2972 } break; | |
| 2973 case TYPE_GENERIC_16_MSB: { | |
| 2974 destData[dp] = cast(byte) (data >>> 8); | |
| 2975 destData[dp + 1] = cast(byte) (data & 0xff); | |
| 2976 } break; | |
| 2977 case TYPE_GENERIC_16_LSB: { | |
| 2978 destData[dp] = cast(byte) (data & 0xff); | |
| 2979 destData[dp + 1] = cast(byte) (data >>> 8); | |
| 2980 } break; | |
| 2981 case TYPE_GENERIC_24: { | |
| 2982 destData[dp] = cast(byte) (data >>> 16); | |
| 2983 destData[dp + 1] = cast(byte) (data >>> 8); | |
| 2984 destData[dp + 2] = cast(byte) (data & 0xff); | |
| 2985 } break; | |
| 2986 case TYPE_GENERIC_32_MSB: { | |
| 2987 destData[dp] = cast(byte) (data >>> 24); | |
| 2988 destData[dp + 1] = cast(byte) (data >>> 16); | |
| 2989 destData[dp + 2] = cast(byte) (data >>> 8); | |
| 2990 destData[dp + 3] = cast(byte) (data & 0xff); | |
| 2991 } break; | |
| 2992 case TYPE_GENERIC_32_LSB: { | |
| 2993 destData[dp] = cast(byte) (data & 0xff); | |
| 2994 destData[dp + 1] = cast(byte) (data >>> 8); | |
| 2995 destData[dp + 2] = cast(byte) (data >>> 16); | |
| 2996 destData[dp + 3] = cast(byte) (data >>> 24); | |
| 2997 } break; | |
| 2998 } | |
| 2999 } | |
| 3000 } | |
| 3001 } | |
| 3002 | |
| 3003 /** | |
| 3004 * Blits a direct palette image into an index palette image. | |
| 3005 * <p> | |
| 3006 * Note: The source and destination masks and palettes must | |
| 3007 * always be fully specified. | |
| 3008 * </p> | |
| 3009 * | |
| 3010 * @param op the blitter operation: a combination of BLIT_xxx flags | |
| 3011 * (see BLIT_xxx constants) | |
| 3012 * @param srcData the source byte array containing image data | |
| 3013 * @param srcDepth the source depth: one of 8, 16, 24, 32 | |
| 3014 * @param srcStride the source number of bytes per line | |
| 3015 * @param srcOrder the source byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 3016 * ignored if srcDepth is not 16 or 32 | |
| 3017 * @param srcX the top-left x-coord of the source blit region | |
| 3018 * @param srcY the top-left y-coord of the source blit region | |
| 3019 * @param srcWidth the width of the source blit region | |
| 3020 * @param srcHeight the height of the source blit region | |
| 3021 * @param srcRedMask the source red channel mask | |
| 3022 * @param srcGreenMask the source green channel mask | |
| 3023 * @param srcBlueMask the source blue channel mask | |
| 3024 * @param alphaMode the alpha blending or mask mode, may be | |
| 3025 * an integer 0-255 for global alpha; ignored if BLIT_ALPHA | |
| 3026 * not specified in the blitter operations | |
| 3027 * (see ALPHA_MODE_xxx constants) | |
| 3028 * @param alphaData the alpha blending or mask data, varies depending | |
| 3029 * on the value of alphaMode and sometimes ignored | |
| 3030 * @param alphaStride the alpha data number of bytes per line | |
| 3031 * @param alphaX the top-left x-coord of the alpha blit region | |
| 3032 * @param alphaY the top-left y-coord of the alpha blit region | |
| 3033 * @param destData the destination byte array containing image data | |
| 3034 * @param destDepth the destination depth: one of 1, 2, 4, 8 | |
| 3035 * @param destStride the destination number of bytes per line | |
| 3036 * @param destOrder the destination byte ordering: one of MSB_FIRST or LSB_FIRST; | |
| 3037 * ignored if destDepth is not 1 | |
| 3038 * @param destX the top-left x-coord of the destination blit region | |
| 3039 * @param destY the top-left y-coord of the destination blit region | |
| 3040 * @param destWidth the width of the destination blit region | |
| 3041 * @param destHeight the height of the destination blit region | |
| 3042 * @param destReds the destination palette red component intensities | |
| 3043 * @param destGreens the destination palette green component intensities | |
| 3044 * @param destBlues the destination palette blue component intensities | |
| 3045 * @param flipX if true the resulting image is flipped along the vertical axis | |
| 3046 * @param flipY if true the resulting image is flipped along the horizontal axis | |
| 3047 */ | |
| 3048 static void blit(int op, | |
| 3049 byte[] srcData, int srcDepth, int srcStride, int srcOrder, | |
| 3050 int srcX, int srcY, int srcWidth, int srcHeight, | |
| 3051 int srcRedMask, int srcGreenMask, int srcBlueMask, | |
| 3052 int alphaMode, byte[] alphaData, int alphaStride, int alphaX, int alphaY, | |
| 3053 byte[] destData, int destDepth, int destStride, int destOrder, | |
| 3054 int destX, int destY, int destWidth, int destHeight, | |
| 3055 byte[] destReds, byte[] destGreens, byte[] destBlues, | |
| 3056 bool flipX, bool flipY) { | |
| 3057 if ((destWidth <= 0) || (destHeight <= 0) || (alphaMode == ALPHA_TRANSPARENT)) return; | |
| 3058 | |
| 3059 // these should be supplied as params later | |
| 3060 int srcAlphaMask = 0; | |
| 3061 | |
| 3062 /*** Prepare scaling data ***/ | |
| 3063 int dwm1 = destWidth - 1; | |
| 3064 int sfxi = (dwm1 != 0) ? cast(int)(((cast(long)srcWidth << 16) - 1) / dwm1) : 0; | |
| 3065 int dhm1 = destHeight - 1; | |
| 3066 int sfyi = (dhm1 != 0) ? cast(int)(((cast(long)srcHeight << 16) - 1) / dhm1) : 0; | |
| 3067 | |
| 3068 /*** Prepare source-related data ***/ | |
| 3069 int sbpp, stype; | |
| 3070 switch (srcDepth) { | |
| 3071 case 8: | |
| 3072 sbpp = 1; | |
| 3073 stype = TYPE_GENERIC_8; | |
| 3074 break; | |
| 3075 case 16: | |
| 3076 sbpp = 2; | |
| 3077 stype = (srcOrder == MSB_FIRST) ? TYPE_GENERIC_16_MSB : TYPE_GENERIC_16_LSB; | |
| 3078 break; | |
| 3079 case 24: | |
| 3080 sbpp = 3; | |
| 3081 stype = TYPE_GENERIC_24; | |
| 3082 break; | |
| 3083 case 32: | |
| 3084 sbpp = 4; | |
| 3085 stype = (srcOrder == MSB_FIRST) ? TYPE_GENERIC_32_MSB : TYPE_GENERIC_32_LSB; | |
| 3086 break; | |
| 3087 default: | |
| 3088 //throw new IllegalArgumentException("Invalid source type"); | |
| 3089 return; | |
| 3090 } | |
| 3091 int spr = srcY * srcStride + srcX * sbpp; | |
| 3092 | |
| 3093 /*** Prepare destination-related data ***/ | |
| 3094 int dtype; | |
| 3095 switch (destDepth) { | |
| 3096 case 8: | |
| 3097 dtype = TYPE_INDEX_8; | |
| 3098 break; | |
| 3099 case 4: | |
| 3100 destStride <<= 1; | |
| 3101 dtype = TYPE_INDEX_4; | |
| 3102 break; | |
| 3103 case 2: | |
| 3104 destStride <<= 2; | |
| 3105 dtype = TYPE_INDEX_2; | |
| 3106 break; | |
| 3107 case 1: | |
| 3108 destStride <<= 3; | |
| 3109 dtype = (destOrder == MSB_FIRST) ? TYPE_INDEX_1_MSB : TYPE_INDEX_1_LSB; | |
| 3110 break; | |
| 3111 default: | |
| 3112 //throw new IllegalArgumentException("Invalid source type"); | |
| 3113 return; | |
| 3114 } | |
| 3115 int dpr = ((flipY) ? destY + dhm1 : destY) * destStride + ((flipX) ? destX + dwm1 : destX); | |
| 3116 int dprxi = (flipX) ? -1 : 1; | |
| 3117 int dpryi = (flipY) ? -destStride : destStride; | |
| 3118 | |
| 3119 /*** Prepare special processing data ***/ | |
| 3120 int apr; | |
| 3121 if ((op & BLIT_ALPHA) != 0) { | |
| 3122 switch (alphaMode) { | |
| 3123 case ALPHA_MASK_UNPACKED: | |
| 3124 case ALPHA_CHANNEL_SEPARATE: | |
| 3125 if (alphaData == null) alphaMode = 0x10000; | |
| 3126 apr = alphaY * alphaStride + alphaX; | |
| 3127 break; | |
| 3128 case ALPHA_MASK_PACKED: | |
| 3129 if (alphaData == null) alphaMode = 0x10000; | |
| 3130 alphaStride <<= 3; | |
| 3131 apr = alphaY * alphaStride + alphaX; | |
| 3132 break; | |
| 3133 case ALPHA_MASK_INDEX: | |
| 3134 //throw new IllegalArgumentException("Invalid alpha type"); | |
| 3135 return; | |
| 3136 case ALPHA_MASK_RGB: | |
| 3137 if (alphaData == null) alphaMode = 0x10000; | |
| 3138 apr = 0; | |
| 3139 break; | |
| 3140 default: | |
| 3141 alphaMode = (alphaMode << 16) / 255; // prescale | |
| 3142 case ALPHA_CHANNEL_SOURCE: | |
| 3143 apr = 0; | |
| 3144 break; | |
| 3145 } | |
| 3146 } else { | |
| 3147 alphaMode = 0x10000; | |
| 3148 apr = 0; | |
| 3149 } | |
| 3150 bool ditherEnabled = (op & BLIT_DITHER) != 0; | |
| 3151 | |
| 3152 /*** Comprehensive blit (apply transformations) ***/ | |
| 3153 int srcRedShift = getChannelShift(srcRedMask); | |
| 3154 byte[] srcReds = ANY_TO_EIGHT[getChannelWidth(srcRedMask, srcRedShift)]; | |
| 3155 int srcGreenShift = getChannelShift(srcGreenMask); | |
| 3156 byte[] srcGreens = ANY_TO_EIGHT[getChannelWidth(srcGreenMask, srcGreenShift)]; | |
| 3157 int srcBlueShift = getChannelShift(srcBlueMask); | |
| 3158 byte[] srcBlues = ANY_TO_EIGHT[getChannelWidth(srcBlueMask, srcBlueShift)]; | |
| 3159 int srcAlphaShift = getChannelShift(srcAlphaMask); | |
| 3160 byte[] srcAlphas = ANY_TO_EIGHT[getChannelWidth(srcAlphaMask, srcAlphaShift)]; | |
| 3161 | |
| 3162 int dp = dpr; | |
| 3163 int sp = spr; | |
| 3164 int ap = apr, alpha = alphaMode; | |
| 3165 int r = 0, g = 0, b = 0, a = 0; | |
| 3166 int indexq = 0; | |
| 3167 int lastindex = 0, lastr = -1, lastg = -1, lastb = -1; | |
| 3168 int[] rerr, gerr, berr; | |
| 3169 int destPaletteSize = 1 << destDepth; | |
| 3170 if ((destReds != null) && (destReds.length < destPaletteSize)) destPaletteSize = destReds.length; | |
| 3171 if (ditherEnabled) { | |
| 3172 rerr = new int[destWidth + 2]; | |
| 3173 gerr = new int[destWidth + 2]; | |
| 3174 berr = new int[destWidth + 2]; | |
| 3175 } else { | |
| 3176 rerr = null; gerr = null; berr = null; | |
| 3177 } | |
| 3178 for (int dy = destHeight, sfy = sfyi; dy > 0; --dy, | |
| 3179 sp = spr += (sfy >>> 16) * srcStride, | |
| 3180 ap = apr += (sfy >>> 16) * alphaStride, | |
| 3181 sfy = (sfy & 0xffff) + sfyi, | |
| 3182 dp = dpr += dpryi) { | |
| 3183 int lrerr = 0, lgerr = 0, lberr = 0; | |
| 3184 for (int dx = destWidth, sfx = sfxi; dx > 0; --dx, | |
| 3185 dp += dprxi, | |
| 3186 sfx = (sfx & 0xffff) + sfxi) { | |
| 3187 /*** READ NEXT PIXEL ***/ | |
| 3188 switch (stype) { | |
| 3189 case TYPE_GENERIC_8: { | |
| 3190 int data = srcData[sp] & 0xff; | |
| 3191 sp += (sfx >>> 16); | |
| 3192 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 3193 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 3194 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 3195 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 3196 } break; | |
| 3197 case TYPE_GENERIC_16_MSB: { | |
| 3198 int data = ((srcData[sp] & 0xff) << 8) | (srcData[sp + 1] & 0xff); | |
| 3199 sp += (sfx >>> 16) * 2; | |
| 3200 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 3201 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 3202 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 3203 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 3204 } break; | |
| 3205 case TYPE_GENERIC_16_LSB: { | |
| 3206 int data = ((srcData[sp + 1] & 0xff) << 8) | (srcData[sp] & 0xff); | |
| 3207 sp += (sfx >>> 16) * 2; | |
| 3208 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 3209 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 3210 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 3211 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 3212 } break; | |
| 3213 case TYPE_GENERIC_24: { | |
| 3214 int data = (( ((srcData[sp] & 0xff) << 8) | | |
| 3215 (srcData[sp + 1] & 0xff)) << 8) | | |
| 3216 (srcData[sp + 2] & 0xff); | |
| 3217 sp += (sfx >>> 16) * 3; | |
| 3218 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 3219 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 3220 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 3221 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 3222 } break; | |
| 3223 case TYPE_GENERIC_32_MSB: { | |
| 3224 int data = (( (( ((srcData[sp] & 0xff) << 8) | | |
| 3225 (srcData[sp + 1] & 0xff)) << 8) | | |
| 3226 (srcData[sp + 2] & 0xff)) << 8) | | |
| 3227 (srcData[sp + 3] & 0xff); | |
| 3228 sp += (sfx >>> 16) * 4; | |
| 3229 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 3230 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 3231 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 3232 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 3233 } break; | |
| 3234 case TYPE_GENERIC_32_LSB: { | |
| 3235 int data = (( (( ((srcData[sp + 3] & 0xff) << 8) | | |
| 3236 (srcData[sp + 2] & 0xff)) << 8) | | |
| 3237 (srcData[sp + 1] & 0xff)) << 8) | | |
| 3238 (srcData[sp] & 0xff); | |
| 3239 sp += (sfx >>> 16) * 4; | |
| 3240 r = srcReds[(data & srcRedMask) >>> srcRedShift] & 0xff; | |
| 3241 g = srcGreens[(data & srcGreenMask) >>> srcGreenShift] & 0xff; | |
| 3242 b = srcBlues[(data & srcBlueMask) >>> srcBlueShift] & 0xff; | |
| 3243 a = srcAlphas[(data & srcAlphaMask) >>> srcAlphaShift] & 0xff; | |
| 3244 } break; | |
| 3245 } | |
| 3246 | |
| 3247 /*** DO SPECIAL PROCESSING IF REQUIRED ***/ | |
| 3248 switch (alphaMode) { | |
| 3249 case ALPHA_CHANNEL_SEPARATE: | |
| 3250 alpha = ((alphaData[ap] & 0xff) << 16) / 255; | |
| 3251 ap += (sfx >> 16); | |
| 3252 break; | |
| 3253 case ALPHA_CHANNEL_SOURCE: | |
| 3254 alpha = (a << 16) / 255; | |
| 3255 break; | |
| 3256 case ALPHA_MASK_UNPACKED: | |
| 3257 alpha = (alphaData[ap] != 0) ? 0x10000 : 0; | |
| 3258 ap += (sfx >> 16); | |
| 3259 break; | |
| 3260 case ALPHA_MASK_PACKED: | |
| 3261 alpha = (alphaData[ap >> 3] << ((ap & 7) + 9)) & 0x10000; | |
| 3262 ap += (sfx >> 16); | |
| 3263 break; | |
| 3264 case ALPHA_MASK_RGB: | |
| 3265 alpha = 0x10000; | |
| 3266 for (int i = 0; i < alphaData.length; i += 3) { | |
| 3267 if ((r == alphaData[i]) && (g == alphaData[i + 1]) && (b == alphaData[i + 2])) { | |
| 3268 alpha = 0x0000; | |
| 3269 break; | |
| 3270 } | |
| 3271 } | |
| 3272 break; | |
| 3273 } | |
| 3274 if (alpha != 0x10000) { | |
| 3275 if (alpha == 0x0000) continue; | |
| 3276 switch (dtype) { | |
| 3277 case TYPE_INDEX_8: | |
| 3278 indexq = destData[dp] & 0xff; | |
| 3279 break; | |
| 3280 case TYPE_INDEX_4: | |
| 3281 if ((dp & 1) != 0) indexq = destData[dp >> 1] & 0x0f; | |
| 3282 else indexq = (destData[dp >> 1] >>> 4) & 0x0f; | |
| 3283 break; | |
| 3284 case TYPE_INDEX_2: | |
| 3285 indexq = (destData[dp >> 2] >>> (6 - (dp & 3) * 2)) & 0x03; | |
| 3286 break; | |
| 3287 case TYPE_INDEX_1_MSB: | |
| 3288 indexq = (destData[dp >> 3] >>> (7 - (dp & 7))) & 0x01; | |
| 3289 break; | |
| 3290 case TYPE_INDEX_1_LSB: | |
| 3291 indexq = (destData[dp >> 3] >>> (dp & 7)) & 0x01; | |
| 3292 break; | |
| 3293 } | |
| 3294 // Perform alpha blending | |
| 3295 int rq = destReds[indexq] & 0xff; | |
| 3296 int gq = destGreens[indexq] & 0xff; | |
| 3297 int bq = destBlues[indexq] & 0xff; | |
| 3298 r = rq + ((r - rq) * alpha >> 16); | |
| 3299 g = gq + ((g - gq) * alpha >> 16); | |
| 3300 b = bq + ((b - bq) * alpha >> 16); | |
| 3301 } | |
| 3302 | |
| 3303 /*** MAP COLOR TO THE PALETTE ***/ | |
| 3304 if (ditherEnabled) { | |
| 3305 // Floyd-Steinberg error diffusion | |
| 3306 r += rerr[dx] >> 4; | |
| 3307 if (r < 0) r = 0; else if (r > 255) r = 255; | |
| 3308 g += gerr[dx] >> 4; | |
| 3309 if (g < 0) g = 0; else if (g > 255) g = 255; | |
| 3310 b += berr[dx] >> 4; | |
| 3311 if (b < 0) b = 0; else if (b > 255) b = 255; | |
| 3312 rerr[dx] = lrerr; | |
| 3313 gerr[dx] = lgerr; | |
| 3314 berr[dx] = lberr; | |
| 3315 } | |
| 3316 if (r != lastr || g != lastg || b != lastb) { | |
| 3317 // moving the variable declarations out seems to make the JDK JIT happier... | |
| 3318 for (int j = 0, dr, dg, db, distance, minDistance = 0x7fffffff; j < destPaletteSize; ++j) { | |
| 3319 dr = (destReds[j] & 0xff) - r; | |
| 3320 dg = (destGreens[j] & 0xff) - g; | |
| 3321 db = (destBlues[j] & 0xff) - b; | |
| 3322 distance = dr * dr + dg * dg + db * db; | |
| 3323 if (distance < minDistance) { | |
| 3324 lastindex = j; | |
| 3325 if (distance == 0) break; | |
| 3326 minDistance = distance; | |
| 3327 } | |
| 3328 } | |
| 3329 lastr = r; lastg = g; lastb = b; | |
| 3330 } | |
| 3331 if (ditherEnabled) { | |
| 3332 // Floyd-Steinberg error diffusion, cont'd... | |
| 3333 int dxm1 = dx - 1, dxp1 = dx + 1; | |
| 3334 int acc; | |
| 3335 rerr[dxp1] += acc = (lrerr = r - (destReds[lastindex] & 0xff)) + lrerr + lrerr; | |
| 3336 rerr[dx] += acc += lrerr + lrerr; | |
| 3337 rerr[dxm1] += acc + lrerr + lrerr; | |
| 3338 gerr[dxp1] += acc = (lgerr = g - (destGreens[lastindex] & 0xff)) + lgerr + lgerr; | |
| 3339 gerr[dx] += acc += lgerr + lgerr; | |
| 3340 gerr[dxm1] += acc + lgerr + lgerr; | |
| 3341 berr[dxp1] += acc = (lberr = b - (destBlues[lastindex] & 0xff)) + lberr + lberr; | |
| 3342 berr[dx] += acc += lberr + lberr; | |
| 3343 berr[dxm1] += acc + lberr + lberr; | |
| 3344 } | |
| 3345 | |
| 3346 /*** WRITE NEXT PIXEL ***/ | |
| 3347 switch (dtype) { | |
| 3348 case TYPE_INDEX_8: | |
| 3349 destData[dp] = cast(byte) lastindex; | |
| 3350 break; | |
| 3351 case TYPE_INDEX_4: | |
| 3352 if ((dp & 1) != 0) destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0xf0) | lastindex); | |
| 3353 else destData[dp >> 1] = cast(byte)((destData[dp >> 1] & 0x0f) | (lastindex << 4)); | |
| 3354 break; | |
| 3355 case TYPE_INDEX_2: { | |
| 3356 int shift = 6 - (dp & 3) * 2; | |
| 3357 destData[dp >> 2] = cast(byte)(destData[dp >> 2] & ~(0x03 << shift) | (lastindex << shift)); | |
| 3358 } break; | |
| 3359 case TYPE_INDEX_1_MSB: { | |
| 3360 int shift = 7 - (dp & 7); | |
| 3361 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (lastindex << shift)); | |
| 3362 } break; | |
| 3363 case TYPE_INDEX_1_LSB: { | |
| 3364 int shift = dp & 7; | |
| 3365 destData[dp >> 3] = cast(byte)(destData[dp >> 3] & ~(0x01 << shift) | (lastindex << shift)); | |
| 3366 } break; | |
| 3367 } | |
| 3368 } | |
| 3369 } | |
| 3370 } | |
| 3371 | |
| 3372 /** | |
| 3373 * Computes the required channel shift from a mask. | |
| 3374 */ | |
| 3375 static int getChannelShift(int mask) { | |
| 3376 if (mask == 0) return 0; | |
| 3377 int i; | |
| 3378 for (i = 0; ((mask & 1) == 0) && (i < 32); ++i) { | |
| 3379 mask >>>= 1; | |
| 3380 } | |
| 3381 return i; | |
| 3382 } | |
| 3383 | |
| 3384 /** | |
| 3385 * Computes the required channel width (depth) from a mask. | |
| 3386 */ | |
| 3387 static int getChannelWidth(int mask, int shift) { | |
| 3388 if (mask == 0) return 0; | |
| 3389 int i; | |
| 3390 mask >>>= shift; | |
| 3391 for (i = shift; ((mask & 1) != 0) && (i < 32); ++i) { | |
| 3392 mask >>>= 1; | |
| 3393 } | |
| 3394 return i - shift; | |
| 3395 } | |
| 3396 | |
| 3397 /** | |
| 3398 * Extracts a field from packed RGB data given a mask for that field. | |
| 3399 */ | |
| 3400 static byte getChannelField(int data, int mask) { | |
| 3401 int shift = getChannelShift(mask); | |
| 3402 return ANY_TO_EIGHT[getChannelWidth(mask, shift)][(data & mask) >>> shift]; | |
| 3403 } | |
| 3404 | |
| 3405 /** | |
| 3406 * Creates an ImageData containing one band's worth of a gradient filled | |
| 3407 * block. If <code>vertical</code> is true, the band must be tiled | |
| 3408 * horizontally to fill a region, otherwise it must be tiled vertically. | |
| 3409 * | |
| 3410 * @param width the width of the region to be filled | |
| 3411 * @param height the height of the region to be filled | |
| 3412 * @param vertical if true sweeps from top to bottom, else | |
| 3413 * sweeps from left to right | |
| 3414 * @param fromRGB the color to start with | |
| 3415 * @param toRGB the color to end with | |
| 3416 * @param redBits the number of significant red bits, 0 for palette modes | |
| 3417 * @param greenBits the number of significant green bits, 0 for palette modes | |
| 3418 * @param blueBits the number of significant blue bits, 0 for palette modes | |
| 3419 * @return the new ImageData | |
| 3420 */ | |
| 3421 static ImageData createGradientBand( | |
| 3422 int width, int height, bool vertical, | |
| 3423 RGB fromRGB, RGB toRGB, | |
| 3424 int redBits, int greenBits, int blueBits) { | |
| 3425 /* Gradients are drawn as tiled bands */ | |
| 3426 int bandWidth, bandHeight, bitmapDepth; | |
| 3427 byte[] bitmapData; | |
| 3428 PaletteData paletteData; | |
| 3429 /* Select an algorithm depending on the depth of the screen */ | |
| 3430 if (redBits != 0 && greenBits != 0 && blueBits != 0) { | |
| 3431 paletteData = new PaletteData(0x0000ff00, 0x00ff0000, 0xff000000); | |
| 3432 bitmapDepth = 32; | |
| 3433 if (redBits >= 8 && greenBits >= 8 && blueBits >= 8) { | |
| 3434 /* Precise color */ | |
| 3435 int steps; | |
| 3436 if (vertical) { | |
| 3437 bandWidth = 1; | |
| 3438 bandHeight = height; | |
| 3439 steps = bandHeight > 1 ? bandHeight - 1 : 1; | |
| 3440 } else { | |
| 3441 bandWidth = width; | |
| 3442 bandHeight = 1; | |
| 3443 steps = bandWidth > 1 ? bandWidth - 1 : 1; | |
| 3444 } | |
| 3445 int bytesPerLine = bandWidth * 4; | |
| 3446 bitmapData = new byte[bandHeight * bytesPerLine]; | |
| 3447 buildPreciseGradientChannel(fromRGB.blue, toRGB.blue, steps, bandWidth, bandHeight, vertical, bitmapData, 0, bytesPerLine); | |
| 3448 buildPreciseGradientChannel(fromRGB.green, toRGB.green, steps, bandWidth, bandHeight, vertical, bitmapData, 1, bytesPerLine); | |
| 3449 buildPreciseGradientChannel(fromRGB.red, toRGB.red, steps, bandWidth, bandHeight, vertical, bitmapData, 2, bytesPerLine); | |
| 3450 } else { | |
| 3451 /* Dithered color */ | |
| 3452 int steps; | |
| 3453 if (vertical) { | |
| 3454 bandWidth = (width < 8) ? width : 8; | |
| 3455 bandHeight = height; | |
| 3456 steps = bandHeight > 1 ? bandHeight - 1 : 1; | |
| 3457 } else { | |
| 3458 bandWidth = width; | |
| 3459 bandHeight = (height < 8) ? height : 8; | |
| 3460 steps = bandWidth > 1 ? bandWidth - 1 : 1; | |
| 3461 } | |
| 3462 int bytesPerLine = bandWidth * 4; | |
| 3463 bitmapData = new byte[bandHeight * bytesPerLine]; | |
| 3464 buildDitheredGradientChannel(fromRGB.blue, toRGB.blue, steps, bandWidth, bandHeight, vertical, bitmapData, 0, bytesPerLine, blueBits); | |
| 3465 buildDitheredGradientChannel(fromRGB.green, toRGB.green, steps, bandWidth, bandHeight, vertical, bitmapData, 1, bytesPerLine, greenBits); | |
| 3466 buildDitheredGradientChannel(fromRGB.red, toRGB.red, steps, bandWidth, bandHeight, vertical, bitmapData, 2, bytesPerLine, redBits); | |
| 3467 } | |
| 3468 } else { | |
| 3469 /* Dithered two tone */ | |
| 3470 paletteData = new PaletteData([ fromRGB, toRGB ]); | |
| 3471 bitmapDepth = 8; | |
| 3472 int blendi; | |
| 3473 if (vertical) { | |
| 3474 bandWidth = (width < 8) ? width : 8; | |
| 3475 bandHeight = height; | |
| 3476 blendi = (bandHeight > 1) ? 0x1040000 / (bandHeight - 1) + 1 : 1; | |
| 3477 } else { | |
| 3478 bandWidth = width; | |
| 3479 bandHeight = (height < 8) ? height : 8; | |
| 3480 blendi = (bandWidth > 1) ? 0x1040000 / (bandWidth - 1) + 1 : 1; | |
| 3481 } | |
| 3482 int bytesPerLine = (bandWidth + 3) & -4; | |
| 3483 bitmapData = new byte[bandHeight * bytesPerLine]; | |
| 3484 if (vertical) { | |
| 3485 for (int dy = 0, blend = 0, dp = 0; dy < bandHeight; | |
| 3486 ++dy, blend += blendi, dp += bytesPerLine) { | |
| 3487 for (int dx = 0; dx < bandWidth; ++dx) { | |
| 3488 bitmapData[dp + dx] = (blend + DITHER_MATRIX[dy & 7][dx]) < | |
| 3489 0x1000000 ? cast(byte)0 : cast(byte)1; | |
| 3490 } | |
| 3491 } | |
| 3492 } else { | |
| 3493 for (int dx = 0, blend = 0; dx < bandWidth; ++dx, blend += blendi) { | |
| 3494 for (int dy = 0, dptr = dx; dy < bandHeight; ++dy, dptr += bytesPerLine) { | |
| 3495 bitmapData[dptr] = (blend + DITHER_MATRIX[dy][dx & 7]) < | |
| 3496 0x1000000 ? cast(byte)0 : cast(byte)1; | |
| 3497 } | |
| 3498 } | |
| 3499 } | |
| 3500 } | |
| 3501 return new ImageData(bandWidth, bandHeight, bitmapDepth, paletteData, 4, bitmapData); | |
| 3502 } | |
| 3503 | |
| 3504 /* | |
| 3505 * Fill in gradated values for a color channel | |
| 3506 */ | |
| 3507 static final void buildPreciseGradientChannel(int from, int to, int steps, | |
| 3508 int bandWidth, int bandHeight, bool vertical, | |
| 3509 byte[] bitmapData, int dp, int bytesPerLine) { | |
| 3510 int val = from << 16; | |
| 3511 int inc = ((to << 16) - val) / steps + 1; | |
| 3512 if (vertical) { | |
| 3513 for (int dy = 0; dy < bandHeight; ++dy, dp += bytesPerLine) { | |
| 3514 bitmapData[dp] = cast(byte)(val >>> 16); | |
| 3515 val += inc; | |
| 3516 } | |
| 3517 } else { | |
| 3518 for (int dx = 0; dx < bandWidth; ++dx, dp += 4) { | |
| 3519 bitmapData[dp] = cast(byte)(val >>> 16); | |
| 3520 val += inc; | |
| 3521 } | |
| 3522 } | |
| 3523 } | |
| 3524 | |
| 3525 /* | |
| 3526 * Fill in dithered gradated values for a color channel | |
| 3527 */ | |
| 3528 static final void buildDitheredGradientChannel(int from, int to, int steps, | |
| 3529 int bandWidth, int bandHeight, bool vertical, | |
| 3530 byte[] bitmapData, int dp, int bytesPerLine, int bits) { | |
| 3531 int mask = 0xff00 >>> bits; | |
| 3532 int val = from << 16; | |
| 3533 int inc = ((to << 16) - val) / steps + 1; | |
| 3534 if (vertical) { | |
| 3535 for (int dy = 0; dy < bandHeight; ++dy, dp += bytesPerLine) { | |
| 3536 for (int dx = 0, dptr = dp; dx < bandWidth; ++dx, dptr += 4) { | |
| 3537 int thresh = DITHER_MATRIX[dy & 7][dx] >>> bits; | |
| 3538 int temp = val + thresh; | |
| 3539 if (temp > 0xffffff) bitmapData[dptr] = -1; | |
| 3540 else bitmapData[dptr] = cast(byte)((temp >>> 16) & mask); | |
| 3541 } | |
| 3542 val += inc; | |
| 3543 } | |
| 3544 } else { | |
| 3545 for (int dx = 0; dx < bandWidth; ++dx, dp += 4) { | |
| 3546 for (int dy = 0, dptr = dp; dy < bandHeight; ++dy, dptr += bytesPerLine) { | |
| 3547 int thresh = DITHER_MATRIX[dy][dx & 7] >>> bits; | |
| 3548 int temp = val + thresh; | |
| 3549 if (temp > 0xffffff) bitmapData[dptr] = -1; | |
| 3550 else bitmapData[dptr] = cast(byte)((temp >>> 16) & mask); | |
| 3551 } | |
| 3552 val += inc; | |
| 3553 } | |
| 3554 } | |
| 3555 } | |
| 3556 | |
| 3557 /** | |
| 3558 * Renders a gradient onto a GC. | |
| 3559 * <p> | |
| 3560 * This is a GC helper. | |
| 3561 * </p> | |
| 3562 * | |
| 3563 * @param gc the GC to render the gradient onto | |
| 3564 * @param device the device the GC belongs to | |
| 3565 * @param x the top-left x coordinate of the region to be filled | |
| 3566 * @param y the top-left y coordinate of the region to be filled | |
| 3567 * @param width the width of the region to be filled | |
| 3568 * @param height the height of the region to be filled | |
| 3569 * @param vertical if true sweeps from top to bottom, else | |
| 3570 * sweeps from left to right | |
| 3571 * @param fromRGB the color to start with | |
| 3572 * @param toRGB the color to end with | |
| 3573 * @param redBits the number of significant red bits, 0 for palette modes | |
| 3574 * @param greenBits the number of significant green bits, 0 for palette modes | |
| 3575 * @param blueBits the number of significant blue bits, 0 for palette modes | |
| 3576 */ | |
| 3577 static void fillGradientRectangle(GC gc, Device device, | |
| 3578 int x, int y, int width, int height, bool vertical, | |
| 3579 RGB fromRGB, RGB toRGB, | |
| 3580 int redBits, int greenBits, int blueBits) { | |
| 3581 /* Create the bitmap and tile it */ | |
| 3582 ImageData band = createGradientBand(width, height, vertical, | |
| 3583 fromRGB, toRGB, redBits, greenBits, blueBits); | |
| 3584 Image image = new Image(device, band); | |
| 3585 if ((band.width == 1) || (band.height == 1)) { | |
| 3586 gc.drawImage(image, 0, 0, band.width, band.height, x, y, width, height); | |
| 3587 } else { | |
| 3588 if (vertical) { | |
| 3589 for (int dx = 0; dx < width; dx += band.width) { | |
| 3590 int blitWidth = width - dx; | |
| 3591 if (blitWidth > band.width) blitWidth = band.width; | |
| 3592 gc.drawImage(image, 0, 0, blitWidth, band.height, dx + x, y, blitWidth, band.height); | |
| 3593 } | |
| 3594 } else { | |
| 3595 for (int dy = 0; dy < height; dy += band.height) { | |
| 3596 int blitHeight = height - dy; | |
| 3597 if (blitHeight > band.height) blitHeight = band.height; | |
| 3598 gc.drawImage(image, 0, 0, band.width, blitHeight, x, dy + y, band.width, blitHeight); | |
| 3599 } | |
| 3600 } | |
| 3601 } | |
| 3602 image.dispose(); | |
| 3603 } | |
| 3604 | |
| 3605 } |