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comparison dwt/graphics/ImageData.d @ 240:ce446666f5a2

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Update to SWT 3.4M7
author Frank Benoit <benoit@tionex.de>
date Mon, 12 May 2008 19:13:01 +0200
parents 380bad9f6852
children 5a30aa9820f3
comparison
equal deleted inserted replaced
239:06a1f6829310 240:ce446666f5a2
287 * @param scanlinePad the padding of each line, in bytes 287 * @param scanlinePad the padding of each line, in bytes
288 * @param data the data of the image 288 * @param data the data of the image
289 * 289 *
290 * @exception IllegalArgumentException <ul> 290 * @exception IllegalArgumentException <ul>
291 * <li>ERROR_INVALID_ARGUMENT - if the width or height is negative, or if the depth is not 291 * <li>ERROR_INVALID_ARGUMENT - if the width or height is negative, or if the depth is not
292 * one of 1, 2, 4, 8, 16, 24 or 32</li> 292 * one of 1, 2, 4, 8, 16, 24 or 32, or the data array is too small to contain the image data</li>
293 * <li>ERROR_NULL_ARGUMENT - if the palette or data is null</li> 293 * <li>ERROR_NULL_ARGUMENT - if the palette or data is null</li>
294 * <li>ERROR_CANNOT_BE_ZERO - if the scanlinePad is zero</li> 294 * <li>ERROR_CANNOT_BE_ZERO - if the scanlinePad is zero</li>
295 * </ul> 295 * </ul>
296 */ 296 */
297 public this(int width, int height, int depth, PaletteData palette, int scanlinePad, byte[] data) { 297 public this(int width, int height, int depth, PaletteData palette, int scanlinePad, byte[] data) {
442 } 442 }
443 if (scanlinePad is 0) DWT.error (DWT.ERROR_CANNOT_BE_ZERO); 443 if (scanlinePad is 0) DWT.error (DWT.ERROR_CANNOT_BE_ZERO);
444 444
445 int bytesPerLine = (((width * depth + 7) / 8) + (scanlinePad - 1)) 445 int bytesPerLine = (((width * depth + 7) / 8) + (scanlinePad - 1))
446 / scanlinePad * scanlinePad; 446 / scanlinePad * scanlinePad;
447
448 /*
449 * When the image is being loaded from a PNG, we need to use the theoretical minimum
450 * number of bytes per line to check whether there is enough data, because the actual
451 * number of bytes per line is calculated based on the given depth, which may be larger
452 * than the actual depth of the PNG.
453 */
454 int minBytesPerLine = type is DWT.IMAGE_PNG ? ((((width + 7) / 8) + 3) / 4) * 4 : bytesPerLine;
455 if (data !is null && data.length < minBytesPerLine * height) {
456 DWT.error(DWT.ERROR_INVALID_ARGUMENT);
457 }
447 setAllFields( 458 setAllFields(
448 width, 459 width,
449 height, 460 height,
450 depth, 461 depth,
451 scanlinePad, 462 scanlinePad,