1 /******************************************************************************* 2 * Copyright (c) 2000, 2008 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 * Port to the D programming language: 11 * Frank Benoit <benoit@tionex.de> 12 *******************************************************************************/ 13 module org.eclipse.swt.graphics.Cursor; 14 15 import java.lang.all; 16 17 18 import org.eclipse.swt.SWT; 19 import org.eclipse.swt.graphics.Resource; 20 import org.eclipse.swt.graphics.Device; 21 import org.eclipse.swt.graphics.ImageData; 22 import org.eclipse.swt.graphics.RGB; 23 import org.eclipse.swt.graphics.PaletteData; 24 25 import org.eclipse.swt.internal.gtk.OS; 26 27 version(Tango){ 28 import tango.stdc..string; 29 } else { 30 import core.stdc..string; 31 } 32 33 /** 34 * Instances of this class manage operating system resources that 35 * specify the appearance of the on-screen pointer. To create a 36 * cursor you specify the device and either a simple cursor style 37 * describing one of the standard operating system provided cursors 38 * or the image and mask data for the desired appearance. 39 * <p> 40 * Application code must explicitly invoke the <code>Cursor.dispose()</code> 41 * method to release the operating system resources managed by each instance 42 * when those instances are no longer required. 43 * </p> 44 * <dl> 45 * <dt><b>Styles:</b></dt> 46 * <dd> 47 * CURSOR_ARROW, CURSOR_WAIT, CURSOR_CROSS, CURSOR_APPSTARTING, CURSOR_HELP, 48 * CURSOR_SIZEALL, CURSOR_SIZENESW, CURSOR_SIZENS, CURSOR_SIZENWSE, CURSOR_SIZEWE, 49 * CURSOR_SIZEN, CURSOR_SIZES, CURSOR_SIZEE, CURSOR_SIZEW, CURSOR_SIZENE, CURSOR_SIZESE, 50 * CURSOR_SIZESW, CURSOR_SIZENW, CURSOR_UPARROW, CURSOR_IBEAM, CURSOR_NO, CURSOR_HAND 51 * </dd> 52 * </dl> 53 * <p> 54 * Note: Only one of the above styles may be specified. 55 * </p> 56 * 57 * @see <a href="http://www.eclipse.org/swt/snippets/#cursor">Cursor snippets</a> 58 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> 59 */ 60 public final class Cursor : Resource { 61 /** 62 * the handle to the OS cursor resource 63 * (Warning: This field is platform dependent) 64 * <p> 65 * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT 66 * public API. It is marked public only so that it can be shared 67 * within the packages provided by SWT. It is not available on all 68 * platforms and should never be accessed from application code. 69 * </p> 70 */ 71 public GdkCursor* handle; 72 73 static const byte[] APPSTARTING_SRC = [ cast(byte) 74 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 75 0x0c, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x00, 76 0x7c, 0x00, 0x00, 0x00, cast(byte)0xfc, 0x00, 0x00, 0x00, cast(byte)0xfc, 0x01, 0x00, 0x00, 77 cast(byte)0xfc, 0x3b, 0x00, 0x00, 0x7c, 0x38, 0x00, 0x00, 0x6c, 0x54, 0x00, 0x00, 78 cast(byte)0xc4, cast(byte)0xdc, 0x00, 0x00, cast(byte)0xc0, 0x44, 0x00, 0x00, cast(byte)0x80, 0x39, 0x00, 0x00, 79 cast(byte)0x80, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 80 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 81 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 82 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 83 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 84 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]; 85 86 static const byte[] APPSTARTING_MASK = [ cast(byte) 87 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x00, 88 0x1e, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 89 cast(byte)0xfe, 0x00, 0x00, 0x00, cast(byte)0xfe, 0x01, 0x00, 0x00, cast(byte)0xfe, 0x3b, 0x00, 0x00, 90 cast(byte)0xfe, 0x7f, 0x00, 0x00, cast(byte)0xfe, 0x7f, 0x00, 0x00, cast(byte)0xfe, cast(byte)0xfe, 0x00, 0x00, 91 cast(byte)0xee, cast(byte)0xff, 0x01, 0x00, cast(byte)0xe4, cast(byte)0xff, 0x00, 0x00, cast(byte)0xc0, 0x7f, 0x00, 0x00, 92 cast(byte)0xc0, 0x7f, 0x00, 0x00, cast(byte)0x80, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 93 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 94 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 95 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 96 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 97 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]; 98 99 this (Device device) { 100 super(device); 101 } 102 103 /** 104 * Constructs a new cursor given a device and a style 105 * constant describing the desired cursor appearance. 106 * <p> 107 * You must dispose the cursor when it is no longer required. 108 * </p> 109 * 110 * @param device the device on which to allocate the cursor 111 * @param style the style of cursor to allocate 112 * 113 * @exception IllegalArgumentException <ul> 114 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> 115 * <li>ERROR_INVALID_ARGUMENT - when an unknown style is specified</li> 116 * </ul> 117 * @exception SWTError <ul> 118 * <li>ERROR_NO_HANDLES - if a handle could not be obtained for cursor creation</li> 119 * </ul> 120 * 121 * @see SWT#CURSOR_ARROW 122 * @see SWT#CURSOR_WAIT 123 * @see SWT#CURSOR_CROSS 124 * @see SWT#CURSOR_APPSTARTING 125 * @see SWT#CURSOR_HELP 126 * @see SWT#CURSOR_SIZEALL 127 * @see SWT#CURSOR_SIZENESW 128 * @see SWT#CURSOR_SIZENS 129 * @see SWT#CURSOR_SIZENWSE 130 * @see SWT#CURSOR_SIZEWE 131 * @see SWT#CURSOR_SIZEN 132 * @see SWT#CURSOR_SIZES 133 * @see SWT#CURSOR_SIZEE 134 * @see SWT#CURSOR_SIZEW 135 * @see SWT#CURSOR_SIZENE 136 * @see SWT#CURSOR_SIZESE 137 * @see SWT#CURSOR_SIZESW 138 * @see SWT#CURSOR_SIZENW 139 * @see SWT#CURSOR_UPARROW 140 * @see SWT#CURSOR_IBEAM 141 * @see SWT#CURSOR_NO 142 * @see SWT#CURSOR_HAND 143 */ 144 public this(Device device, int style) { 145 super(device); 146 int shape = 0; 147 switch (style) { 148 case SWT.CURSOR_APPSTARTING: break; 149 case SWT.CURSOR_ARROW: shape = OS.GDK_LEFT_PTR; break; 150 case SWT.CURSOR_WAIT: shape = OS.GDK_WATCH; break; 151 case SWT.CURSOR_CROSS: shape = OS.GDK_CROSS; break; 152 case SWT.CURSOR_HAND: shape = OS.GDK_HAND2; break; 153 case SWT.CURSOR_HELP: shape = OS.GDK_QUESTION_ARROW; break; 154 case SWT.CURSOR_SIZEALL: shape = OS.GDK_FLEUR; break; 155 case SWT.CURSOR_SIZENESW: shape = OS.GDK_SIZING; break; 156 case SWT.CURSOR_SIZENS: shape = OS.GDK_DOUBLE_ARROW; break; 157 case SWT.CURSOR_SIZENWSE: shape = OS.GDK_SIZING; break; 158 case SWT.CURSOR_SIZEWE: shape = OS.GDK_SB_H_DOUBLE_ARROW; break; 159 case SWT.CURSOR_SIZEN: shape = OS.GDK_TOP_SIDE; break; 160 case SWT.CURSOR_SIZES: shape = OS.GDK_BOTTOM_SIDE; break; 161 case SWT.CURSOR_SIZEE: shape = OS.GDK_RIGHT_SIDE; break; 162 case SWT.CURSOR_SIZEW: shape = OS.GDK_LEFT_SIDE; break; 163 case SWT.CURSOR_SIZENE: shape = OS.GDK_TOP_RIGHT_CORNER; break; 164 case SWT.CURSOR_SIZESE: shape = OS.GDK_BOTTOM_RIGHT_CORNER; break; 165 case SWT.CURSOR_SIZESW: shape = OS.GDK_BOTTOM_LEFT_CORNER; break; 166 case SWT.CURSOR_SIZENW: shape = OS.GDK_TOP_LEFT_CORNER; break; 167 case SWT.CURSOR_UPARROW: shape = OS.GDK_SB_UP_ARROW; break; 168 case SWT.CURSOR_IBEAM: shape = OS.GDK_XTERM; break; 169 case SWT.CURSOR_NO: shape = OS.GDK_X_CURSOR; break; 170 default: 171 SWT.error(SWT.ERROR_INVALID_ARGUMENT); 172 } 173 if (shape is 0 && style is SWT.CURSOR_APPSTARTING) { 174 handle = createCursor(APPSTARTING_SRC, APPSTARTING_MASK, 32, 32, 2, 2, true); 175 } else { 176 handle = OS.gdk_cursor_new(shape); 177 } 178 if (handle is null) SWT.error(SWT.ERROR_NO_HANDLES); 179 init_(); 180 } 181 182 /** 183 * Constructs a new cursor given a device, image and mask 184 * data describing the desired cursor appearance, and the x 185 * and y coordinates of the <em>hotspot</em> (that is, the point 186 * within the area covered by the cursor which is considered 187 * to be where the on-screen pointer is "pointing"). 188 * <p> 189 * The mask data is allowed to be null, but in this case the source 190 * must be an ImageData representing an icon that specifies both 191 * color data and mask data. 192 * <p> 193 * You must dispose the cursor when it is no longer required. 194 * </p> 195 * 196 * @param device the device on which to allocate the cursor 197 * @param source the color data for the cursor 198 * @param mask the mask data for the cursor (or null) 199 * @param hotspotX the x coordinate of the cursor's hotspot 200 * @param hotspotY the y coordinate of the cursor's hotspot 201 * 202 * @exception IllegalArgumentException <ul> 203 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> 204 * <li>ERROR_NULL_ARGUMENT - if the source is null</li> 205 * <li>ERROR_NULL_ARGUMENT - if the mask is null and the source does not have a mask</li> 206 * <li>ERROR_INVALID_ARGUMENT - if the source and the mask are not the same 207 * size, or if the hotspot is outside the bounds of the image</li> 208 * </ul> 209 * @exception SWTError <ul> 210 * <li>ERROR_NO_HANDLES - if a handle could not be obtained for cursor creation</li> 211 * </ul> 212 */ 213 public this(Device device, ImageData source, ImageData mask, int hotspotX, int hotspotY) { 214 super(device); 215 if (source is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); 216 if (mask is null) { 217 if (!(source.getTransparencyType() is SWT.TRANSPARENCY_MASK)) SWT.error(SWT.ERROR_NULL_ARGUMENT); 218 mask = source.getTransparencyMask(); 219 } 220 /* Check the bounds. Mask must be the same size as source */ 221 if (mask.width !is source.width || mask.height !is source.height) { 222 SWT.error(SWT.ERROR_INVALID_ARGUMENT); 223 } 224 /* Check the hotspots */ 225 if (hotspotX >= source.width || hotspotX < 0 || 226 hotspotY >= source.height || hotspotY < 0) { 227 SWT.error(SWT.ERROR_INVALID_ARGUMENT); 228 } 229 /* Convert depth to 1 */ 230 source = ImageData.convertMask(source); 231 mask = ImageData.convertMask(mask); 232 233 /* Swap the bits in each byte and convert to appropriate scanline pad */ 234 byte[] sourceData = new byte[source.data.length]; 235 byte[] maskData = new byte[mask.data.length]; 236 byte[] data = source.data; 237 for (int i = 0; i < data.length; i++) { 238 byte s = data[i]; 239 sourceData[i] = cast(byte)(((s & 0x80) >> 7) | 240 ((s & 0x40) >> 5) | 241 ((s & 0x20) >> 3) | 242 ((s & 0x10) >> 1) | 243 ((s & 0x08) << 1) | 244 ((s & 0x04) << 3) | 245 ((s & 0x02) << 5) | 246 ((s & 0x01) << 7)); 247 sourceData[i] = cast(byte) ~cast(int)sourceData[i]; 248 } 249 sourceData = ImageData.convertPad(sourceData, source.width, source.height, source.depth, source.scanlinePad, 1); 250 data = mask.data; 251 for (int i = 0; i < data.length; i++) { 252 byte s = data[i]; 253 maskData[i] = cast(byte)(((s & 0x80) >> 7) | 254 ((s & 0x40) >> 5) | 255 ((s & 0x20) >> 3) | 256 ((s & 0x10) >> 1) | 257 ((s & 0x08) << 1) | 258 ((s & 0x04) << 3) | 259 ((s & 0x02) << 5) | 260 ((s & 0x01) << 7)); 261 maskData[i] = cast(byte) ~cast(int)maskData[i]; 262 } 263 maskData = ImageData.convertPad(maskData, mask.width, mask.height, mask.depth, mask.scanlinePad, 1); 264 handle = createCursor(maskData, sourceData, source.width, source.height, hotspotX, hotspotY, true); 265 if (handle is null) SWT.error(SWT.ERROR_NO_HANDLES); 266 init_(); 267 } 268 269 /** 270 * Constructs a new cursor given a device, image data describing 271 * the desired cursor appearance, and the x and y coordinates of 272 * the <em>hotspot</em> (that is, the point within the area 273 * covered by the cursor which is considered to be where the 274 * on-screen pointer is "pointing"). 275 * <p> 276 * You must dispose the cursor when it is no longer required. 277 * </p> 278 * 279 * @param device the device on which to allocate the cursor 280 * @param source the image data for the cursor 281 * @param hotspotX the x coordinate of the cursor's hotspot 282 * @param hotspotY the y coordinate of the cursor's hotspot 283 * 284 * @exception IllegalArgumentException <ul> 285 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> 286 * <li>ERROR_NULL_ARGUMENT - if the image is null</li> 287 * <li>ERROR_INVALID_ARGUMENT - if the hotspot is outside the bounds of the 288 * image</li> 289 * </ul> 290 * @exception SWTError <ul> 291 * <li>ERROR_NO_HANDLES - if a handle could not be obtained for cursor creation</li> 292 * </ul> 293 * 294 * @since 3.0 295 */ 296 public this(Device device, ImageData source, int hotspotX, int hotspotY) { 297 super(device); 298 if (source is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); 299 if (hotspotX >= source.width || hotspotX < 0 || 300 hotspotY >= source.height || hotspotY < 0) { 301 SWT.error(SWT.ERROR_INVALID_ARGUMENT); 302 } 303 GdkDisplay* display; 304 if (OS.GTK_VERSION >= OS.buildVERSION(2, 4, 0) && OS.gdk_display_supports_cursor_color(display = OS.gdk_display_get_default ())) { 305 int width = source.width; 306 int height = source.height; 307 PaletteData palette = source.palette; 308 auto pixbuf = OS.gdk_pixbuf_new(OS.GDK_COLORSPACE_RGB, true, 8, width, height); 309 if (pixbuf is null) SWT.error(SWT.ERROR_NO_HANDLES); 310 int stride = OS.gdk_pixbuf_get_rowstride(pixbuf); 311 auto data = OS.gdk_pixbuf_get_pixels(pixbuf); 312 byte[] buffer = source.data; 313 if (!palette.isDirect || source.depth !is 24 || stride !is source.bytesPerLine || palette.redMask !is 0xFF000000 || palette.greenMask !is 0xFF0000 || palette.blueMask !is 0xFF00) { 314 buffer = new byte[source.width * source.height * 4]; 315 if (palette.isDirect) { 316 ImageData.blit(ImageData.BLIT_SRC, 317 source.data, source.depth, source.bytesPerLine, source.getByteOrder(), 0, 0, source.width, source.height, palette.redMask, palette.greenMask, palette.blueMask, 318 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, 319 buffer, 32, source.width * 4, ImageData.MSB_FIRST, 0, 0, source.width, source.height, 0xFF000000, 0xFF0000, 0xFF00, 320 false, false); 321 } else { 322 RGB[] rgbs = palette.getRGBs(); 323 auto length = rgbs.length; 324 byte[] srcReds = new byte[length]; 325 byte[] srcGreens = new byte[length]; 326 byte[] srcBlues = new byte[length]; 327 for (int i = 0; i < rgbs.length; i++) { 328 RGB rgb = rgbs[i]; 329 if (rgb is null) continue; 330 srcReds[i] = cast(byte)rgb.red; 331 srcGreens[i] = cast(byte)rgb.green; 332 srcBlues[i] = cast(byte)rgb.blue; 333 } 334 ImageData.blit(ImageData.BLIT_SRC, 335 source.data, source.depth, source.bytesPerLine, source.getByteOrder(), 0, 0, source.width, source.height, srcReds, srcGreens, srcBlues, 336 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, 337 buffer, 32, source.width * 4, ImageData.MSB_FIRST, 0, 0, source.width, source.height, 0xFF000000, 0xFF0000, 0xFF00, 338 false, false); 339 } 340 if (source.maskData !is null || source.transparentPixel !is -1) { 341 ImageData mask = source.getTransparencyMask(); 342 byte[] maskData = mask.data; 343 int maskBpl = mask.bytesPerLine; 344 int offset = 3, maskOffset = 0; 345 for (int y = 0; y<source.height; y++) { 346 for (int x = 0; x<source.width; x++) { 347 buffer[offset] = ((maskData[maskOffset + (x >> 3)]) & (1 << (7 - (x & 0x7)))) !is 0 ? cast(byte)0xff : 0; 348 offset += 4; 349 } 350 maskOffset += maskBpl; 351 } 352 } else if (source.alpha !is -1) { 353 byte alpha = cast(byte)source.alpha; 354 for (int i=3; i<buffer.length; i+=4) { 355 buffer[i] = alpha; 356 } 357 } else if (source.alphaData !is null) { 358 byte[] alphaData = source.alphaData; 359 for (int i=3; i<buffer.length; i+=4) { 360 buffer[i] = alphaData[i/4]; 361 } 362 } 363 } 364 memmove(data, buffer.ptr, stride * height); 365 handle = OS.gdk_cursor_new_from_pixbuf(display, pixbuf, hotspotX, hotspotY); 366 OS.g_object_unref(pixbuf); 367 } else { 368 369 ImageData mask = source.getTransparencyMask(); 370 371 /* Ensure depth is equal to 1 */ 372 if (source.depth > 1) { 373 /* Create a destination image with no data */ 374 ImageData newSource = new ImageData( 375 source.width, source.height, 1, ImageData.bwPalette(), 376 1, null, 0, null, null, -1, -1, 0, 0, 0, 0, 0); 377 378 byte[] newReds = [ cast(byte)0, cast(byte)255 ], newGreens = newReds, newBlues = newReds; 379 380 /* Convert the source to a black and white image of depth 1 */ 381 PaletteData palette = source.palette; 382 if (palette.isDirect) { 383 ImageData.blit(ImageData.BLIT_SRC, 384 source.data, source.depth, source.bytesPerLine, source.getByteOrder(), 0, 0, source.width, source.height, palette.redMask, palette.greenMask, palette.blueMask, 385 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, 386 newSource.data, newSource.depth, newSource.bytesPerLine, newSource.getByteOrder(), 0, 0, newSource.width, newSource.height, newReds, newGreens, newBlues, 387 false, false); 388 } else { 389 RGB[] rgbs = palette.getRGBs(); 390 auto length = rgbs.length; 391 byte[] srcReds = new byte[length]; 392 byte[] srcGreens = new byte[length]; 393 byte[] srcBlues = new byte[length]; 394 for (int i = 0; i < rgbs.length; i++) { 395 RGB rgb = rgbs[i]; 396 if (rgb is null) continue; 397 srcReds[i] = cast(byte)rgb.red; 398 srcGreens[i] = cast(byte)rgb.green; 399 srcBlues[i] = cast(byte)rgb.blue; 400 } 401 ImageData.blit(ImageData.BLIT_SRC, 402 source.data, source.depth, source.bytesPerLine, source.getByteOrder(), 0, 0, source.width, source.height, srcReds, srcGreens, srcBlues, 403 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, 404 newSource.data, newSource.depth, newSource.bytesPerLine, newSource.getByteOrder(), 0, 0, newSource.width, newSource.height, newReds, newGreens, newBlues, 405 false, false); 406 } 407 source = newSource; 408 } 409 410 /* Swap the bits in each byte and convert to appropriate scanline pad */ 411 byte[] sourceData = new byte[source.data.length]; 412 byte[] maskData = new byte[mask.data.length]; 413 byte[] data = source.data; 414 for (int i = 0; i < data.length; i++) { 415 byte s = data[i]; 416 sourceData[i] = cast(byte)(((s & 0x80) >> 7) | 417 ((s & 0x40) >> 5) | 418 ((s & 0x20) >> 3) | 419 ((s & 0x10) >> 1) | 420 ((s & 0x08) << 1) | 421 ((s & 0x04) << 3) | 422 ((s & 0x02) << 5) | 423 ((s & 0x01) << 7)); 424 } 425 sourceData = ImageData.convertPad(sourceData, source.width, source.height, source.depth, source.scanlinePad, 1); 426 data = mask.data; 427 for (int i = 0; i < data.length; i++) { 428 byte s = data[i]; 429 maskData[i] = cast(byte)(((s & 0x80) >> 7) | 430 ((s & 0x40) >> 5) | 431 ((s & 0x20) >> 3) | 432 ((s & 0x10) >> 1) | 433 ((s & 0x08) << 1) | 434 ((s & 0x04) << 3) | 435 ((s & 0x02) << 5) | 436 ((s & 0x01) << 7)); 437 } 438 maskData = ImageData.convertPad(maskData, mask.width, mask.height, mask.depth, mask.scanlinePad, 1); 439 handle = createCursor(sourceData, maskData, source.width, source.height, hotspotX, hotspotY, false); 440 } 441 if (handle is null) SWT.error(SWT.ERROR_NO_HANDLES); 442 init_(); 443 } 444 445 GdkCursor* createCursor(in byte[] sourceData, in byte[] maskData, int width, int height, int hotspotX, int hotspotY, bool reverse) { 446 auto sourcePixmap = OS.gdk_bitmap_create_from_data(null, cast(char*)sourceData.ptr, width, height); 447 auto maskPixmap = OS.gdk_bitmap_create_from_data(null, cast(char*)maskData.ptr, width, height); 448 GdkCursor* cursor = null; 449 if (sourcePixmap !is null && maskPixmap !is null) { 450 GdkColor* foreground = new GdkColor(); 451 if (!reverse) foreground.red = foreground.green = foreground.blue = 0xFFFF; 452 GdkColor* background = new GdkColor(); 453 if (reverse) background.red = background.green = background.blue = 0xFFFF; 454 cursor = OS.gdk_cursor_new_from_pixmap (cast(GdkPixmap*)sourcePixmap, cast(GdkPixmap*)maskPixmap, foreground, background, hotspotX, hotspotY); 455 } 456 if (sourcePixmap !is null) OS.g_object_unref (sourcePixmap); 457 if (maskPixmap !is null) OS.g_object_unref (maskPixmap); 458 return cursor; 459 } 460 461 override 462 void destroy() { 463 OS.gdk_cursor_destroy(handle); 464 handle = null; 465 } 466 467 /** 468 * Compares the argument to the receiver, and returns true 469 * if they represent the <em>same</em> object using a class 470 * specific comparison. 471 * 472 * @param object the object to compare with this object 473 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise 474 * 475 * @see #hashCode 476 */ 477 public override equals_t opEquals(Object object) { 478 if (object is this) return true; 479 if ( auto cursor = cast(Cursor)object ){ 480 return device is cursor.device && handle is cursor.handle; 481 } 482 return false; 483 } 484 485 /** 486 * Invokes platform specific functionality to allocate a new cursor. 487 * <p> 488 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public 489 * API for <code>Cursor</code>. It is marked public only so that it 490 * can be shared within the packages provided by SWT. It is not 491 * available on all platforms, and should never be called from 492 * application code. 493 * </p> 494 * 495 * @param device the device on which to allocate the color 496 * @param handle the handle for the cursor 497 * 498 * @private 499 */ 500 public static Cursor gtk_new(Device device, GdkCursor* handle) { 501 Cursor cursor = new Cursor(device); 502 cursor.handle = handle; 503 return cursor; 504 } 505 506 /** 507 * Returns an integer hash code for the receiver. Any two 508 * objects that return <code>true</code> when passed to 509 * <code>equals</code> must return the same value for this 510 * method. 511 * 512 * @return the receiver's hash 513 * 514 * @see #equals 515 */ 516 public override hash_t toHash() { 517 return cast(hash_t)handle; 518 } 519 520 /** 521 * Returns <code>true</code> if the cursor has been disposed, 522 * and <code>false</code> otherwise. 523 * <p> 524 * This method gets the dispose state for the cursor. 525 * When a cursor has been disposed, it is an error to 526 * invoke any other method using the cursor. 527 * 528 * @return <code>true</code> when the cursor is disposed and <code>false</code> otherwise 529 */ 530 public override bool isDisposed() { 531 return handle is null; 532 } 533 534 /** 535 * Returns a string containing a concise, human-readable 536 * description of the receiver. 537 * 538 * @return a string representation of the receiver 539 */ 540 public override String toString () { 541 if (isDisposed()) return "Cursor {*DISPOSED*}"; 542 return Format( "Cursor {{{}}", handle ); 543 } 544 545 }