Mercurial > projects > dwt-win
annotate dwt/graphics/Region.d @ 334:c49e17d48b76
Fix problems at GC run at main()'s end.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Wed, 18 Feb 2009 16:14:31 +0100 |
| parents | fd9c62a2998e |
| children |
| rev | line source |
|---|---|
| 20 | 1 /******************************************************************************* |
| 246 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 20 | 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 | |
| 23 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 20 | 12 *******************************************************************************/ |
| 13 module dwt.graphics.Region; | |
| 14 | |
| 15 | |
| 16 import dwt.DWT; | |
| 17 import dwt.DWTError; | |
| 18 import dwt.DWTException; | |
| 19 import dwt.internal.win32.OS; | |
| 20 | |
| 21 import dwt.graphics.Resource; | |
| 22 import dwt.graphics.Point; | |
| 23 import dwt.graphics.Rectangle; | |
| 24 import dwt.graphics.Device; | |
| 25 | |
| 26 import tango.text.convert.Format; | |
|
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ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
117
diff
changeset
|
27 import dwt.dwthelper.utils; |
| 20 | 28 |
| 29 /** | |
| 30 * Instances of this class represent areas of an x-y coordinate | |
| 31 * system that are aggregates of the areas covered by a number | |
| 32 * of polygons. | |
| 33 * <p> | |
| 34 * Application code must explicitly invoke the <code>Region.dispose()</code> | |
| 35 * method to release the operating system resources managed by each instance | |
| 36 * when those instances are no longer required. | |
| 37 * </p> | |
| 246 | 38 * |
| 39 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: GraphicsExample</a> | |
| 40 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
| 20 | 41 */ |
| 42 | |
| 43 public final class Region : Resource { | |
| 213 | 44 alias Resource.init_ init_; |
| 20 | 45 |
| 46 /** | |
| 47 * the OS resource for the region | |
| 48 * (Warning: This field is platform dependent) | |
| 49 * <p> | |
| 50 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT | |
| 51 * public API. It is marked public only so that it can be shared | |
| 52 * within the packages provided by DWT. It is not available on all | |
| 53 * platforms and should never be accessed from application code. | |
| 54 * </p> | |
| 55 */ | |
| 56 public HRGN handle; | |
| 57 | |
| 58 /** | |
| 59 * Constructs a new empty region. | |
| 60 * | |
| 61 * @exception DWTError <ul> | |
| 62 * <li>ERROR_NO_HANDLES if a handle could not be obtained for region creation</li> | |
| 63 * </ul> | |
| 64 */ | |
| 65 public this () { | |
| 66 this(null); | |
| 67 } | |
| 68 | |
| 69 /** | |
| 70 * Constructs a new empty region. | |
| 71 * <p> | |
| 72 * You must dispose the region when it is no longer required. | |
| 73 * </p> | |
| 74 * | |
| 75 * @param device the device on which to allocate the region | |
| 76 * | |
| 77 * @exception IllegalArgumentException <ul> | |
| 78 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> | |
| 79 * </ul> | |
| 80 * @exception DWTError <ul> | |
| 81 * <li>ERROR_NO_HANDLES if a handle could not be obtained for region creation</li> | |
| 82 * </ul> | |
| 83 * | |
| 84 * @see #dispose | |
| 85 * | |
| 86 * @since 3.0 | |
| 87 */ | |
| 88 public this (Device device) { | |
| 213 | 89 super(device); |
| 20 | 90 handle = OS.CreateRectRgn (0, 0, 0, 0); |
| 91 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 213 | 92 init_(); |
| 20 | 93 } |
| 94 | |
| 95 /** | |
| 96 * Constructs a new region given a handle to the operating | |
| 97 * system resources that it should represent. | |
| 98 * | |
| 99 * @param handle the handle for the result | |
| 100 */ | |
| 101 this(Device device, HRGN handle) { | |
| 213 | 102 super(device); |
| 20 | 103 this.handle = handle; |
| 104 } | |
| 105 | |
| 106 /** | |
| 107 * Adds the given polygon to the collection of polygons | |
| 108 * the receiver maintains to describe its area. | |
| 109 * | |
| 110 * @param pointArray points that describe the polygon to merge with the receiver | |
| 111 * | |
| 112 * @exception IllegalArgumentException <ul> | |
| 113 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 114 * </ul> | |
| 115 * @exception DWTException <ul> | |
| 116 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 117 * </ul> | |
| 118 * | |
| 119 * @since 3.0 | |
| 120 * | |
| 121 */ | |
| 122 public void add (int[] pointArray) { | |
| 123 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 124 if (pointArray is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 117 | 125 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
| 20 | 126 auto polyRgn = OS.CreatePolygonRgn(cast(POINT*)pointArray.ptr, pointArray.length / 2, OS.ALTERNATE); |
| 127 OS.CombineRgn (handle, handle, polyRgn, OS.RGN_OR); | |
| 128 OS.DeleteObject (polyRgn); | |
| 129 } | |
| 130 | |
| 131 /** | |
| 132 * Adds the given rectangle to the collection of polygons | |
| 133 * the receiver maintains to describe its area. | |
| 134 * | |
| 135 * @param rect the rectangle to merge with the receiver | |
| 136 * | |
| 137 * @exception IllegalArgumentException <ul> | |
| 138 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 139 * <li>ERROR_INVALID_ARGUMENT - if the rectangle's width or height is negative</li> | |
| 140 * </ul> | |
| 141 * @exception DWTException <ul> | |
| 142 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 143 * </ul> | |
| 144 */ | |
| 145 public void add (Rectangle rect) { | |
| 146 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 147 if (rect is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 148 add (rect.x, rect.y, rect.width, rect.height); | |
| 149 } | |
| 150 | |
| 151 /** | |
| 152 * Adds the given rectangle to the collection of polygons | |
| 153 * the receiver maintains to describe its area. | |
| 154 * | |
| 155 * @param x the x coordinate of the rectangle | |
| 156 * @param y the y coordinate of the rectangle | |
| 157 * @param width the width coordinate of the rectangle | |
| 158 * @param height the height coordinate of the rectangle | |
| 159 * | |
| 160 * @exception IllegalArgumentException <ul> | |
| 161 * <li>ERROR_INVALID_ARGUMENT - if the rectangle's width or height is negative</li> | |
| 162 * </ul> | |
| 163 * @exception DWTException <ul> | |
| 164 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 165 * </ul> | |
| 166 * | |
| 167 * @since 3.1 | |
| 168 */ | |
| 169 public void add (int x, int y, int width, int height) { | |
| 170 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 171 if (width < 0 || height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 172 auto rectRgn = OS.CreateRectRgn (x, y, x + width, y + height); | |
| 173 OS.CombineRgn (handle, handle, rectRgn, OS.RGN_OR); | |
| 174 OS.DeleteObject (rectRgn); | |
| 175 } | |
| 176 | |
| 177 /** | |
| 178 * Adds all of the polygons which make up the area covered | |
| 179 * by the argument to the collection of polygons the receiver | |
| 180 * maintains to describe its area. | |
| 181 * | |
| 182 * @param region the region to merge | |
| 183 * | |
| 184 * @exception IllegalArgumentException <ul> | |
| 185 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 186 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 187 * </ul> | |
| 188 * @exception DWTException <ul> | |
| 189 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 190 * </ul> | |
| 191 */ | |
| 192 public void add (Region region) { | |
| 193 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 194 if (region is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 195 if (region.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 196 OS.CombineRgn (handle, handle, region.handle, OS.RGN_OR); | |
| 197 } | |
| 198 | |
| 199 /** | |
| 200 * Returns <code>true</code> if the point specified by the | |
| 201 * arguments is inside the area specified by the receiver, | |
| 202 * and <code>false</code> otherwise. | |
| 203 * | |
| 204 * @param x the x coordinate of the point to test for containment | |
| 205 * @param y the y coordinate of the point to test for containment | |
| 206 * @return <code>true</code> if the region contains the point and <code>false</code> otherwise | |
| 207 * | |
| 208 * @exception DWTException <ul> | |
| 209 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 210 * </ul> | |
| 211 */ | |
| 212 public bool contains (int x, int y) { | |
| 213 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 214 return cast(bool) OS.PtInRegion (handle, x, y); | |
| 215 } | |
| 216 | |
| 217 /** | |
| 218 * Returns <code>true</code> if the given point is inside the | |
| 219 * area specified by the receiver, and <code>false</code> | |
| 220 * otherwise. | |
| 221 * | |
| 222 * @param pt the point to test for containment | |
| 223 * @return <code>true</code> if the region contains the point and <code>false</code> otherwise | |
| 224 * | |
| 225 * @exception IllegalArgumentException <ul> | |
| 226 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 227 * </ul> | |
| 228 * @exception DWTException <ul> | |
| 229 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 230 * </ul> | |
| 231 */ | |
| 232 public bool contains (Point pt) { | |
| 233 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 234 if (pt is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 235 return contains(pt.x, pt.y); | |
| 236 } | |
| 237 | |
| 213 | 238 void destroy () { |
| 20 | 239 OS.DeleteObject(handle); |
| 240 handle = null; | |
| 241 } | |
| 242 | |
| 243 /** | |
| 244 * Compares the argument to the receiver, and returns true | |
| 245 * if they represent the <em>same</em> object using a class | |
| 246 * specific comparison. | |
| 247 * | |
| 248 * @param object the object to compare with this object | |
| 249 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise | |
| 250 * | |
| 251 * @see #hashCode | |
| 252 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
23
diff
changeset
|
253 override public int opEquals (Object object) { |
| 20 | 254 if (this is object) return true; |
| 255 if (!(cast(Region)object)) return false; | |
| 256 Region rgn = cast(Region)object; | |
| 257 return handle is rgn.handle; | |
| 258 } | |
| 259 | |
| 260 /** | |
| 261 * Returns a rectangle which represents the rectangular | |
| 262 * union of the collection of polygons the receiver | |
| 263 * maintains to describe its area. | |
| 264 * | |
| 265 * @return a bounding rectangle for the region | |
| 266 * | |
| 267 * @exception DWTException <ul> | |
| 268 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 269 * </ul> | |
| 270 * | |
| 271 * @see Rectangle#union | |
| 272 */ | |
| 273 public Rectangle getBounds() { | |
| 274 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 275 RECT rect; | |
| 276 OS.GetRgnBox(handle, &rect); | |
| 277 return new Rectangle(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top); | |
| 278 } | |
| 279 | |
| 280 /** | |
| 281 * Returns an integer hash code for the receiver. Any two | |
| 282 * objects that return <code>true</code> when passed to | |
| 283 * <code>equals</code> must return the same value for this | |
| 284 * method. | |
| 285 * | |
| 286 * @return the receiver's hash | |
| 287 * | |
| 288 * @see #equals | |
| 289 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
23
diff
changeset
|
290 override public hash_t toHash () { |
| 20 | 291 return cast(hash_t)handle; |
| 292 } | |
| 293 | |
| 294 /** | |
| 295 * Intersects the given rectangle to the collection of polygons | |
| 296 * the receiver maintains to describe its area. | |
| 297 * | |
| 298 * @param rect the rectangle to intersect with the receiver | |
| 299 * | |
| 300 * @exception IllegalArgumentException <ul> | |
| 301 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 302 * <li>ERROR_INVALID_ARGUMENT - if the rectangle's width or height is negative</li> | |
| 303 * </ul> | |
| 304 * @exception DWTException <ul> | |
| 305 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 306 * </ul> | |
| 307 * | |
| 308 * @since 3.0 | |
| 309 */ | |
| 310 public void intersect (Rectangle rect) { | |
| 311 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 312 if (rect is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 313 intersect (rect.x, rect.y, rect.width, rect.height); | |
| 314 } | |
| 315 | |
| 316 /** | |
| 317 * Intersects the given rectangle to the collection of polygons | |
| 318 * the receiver maintains to describe its area. | |
| 319 * | |
| 320 * @param x the x coordinate of the rectangle | |
| 321 * @param y the y coordinate of the rectangle | |
| 322 * @param width the width coordinate of the rectangle | |
| 323 * @param height the height coordinate of the rectangle | |
| 324 * | |
| 325 * @exception IllegalArgumentException <ul> | |
| 326 * <li>ERROR_INVALID_ARGUMENT - if the rectangle's width or height is negative</li> | |
| 327 * </ul> | |
| 328 * @exception DWTException <ul> | |
| 329 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 330 * </ul> | |
| 331 * | |
| 332 * @since 3.1 | |
| 333 */ | |
| 334 public void intersect (int x, int y, int width, int height) { | |
| 335 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 336 if (width < 0 || height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 337 auto rectRgn = OS.CreateRectRgn (x, y, x + width, y + height); | |
| 338 OS.CombineRgn (handle, handle, rectRgn, OS.RGN_AND); | |
| 339 OS.DeleteObject (rectRgn); | |
| 340 } | |
| 341 | |
| 342 /** | |
| 343 * Intersects all of the polygons which make up the area covered | |
| 344 * by the argument to the collection of polygons the receiver | |
| 345 * maintains to describe its area. | |
| 346 * | |
| 347 * @param region the region to intersect | |
| 348 * | |
| 349 * @exception IllegalArgumentException <ul> | |
| 350 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 351 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 352 * </ul> | |
| 353 * @exception DWTException <ul> | |
| 354 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 355 * </ul> | |
| 356 * | |
| 357 * @since 3.0 | |
| 358 */ | |
| 359 public void intersect (Region region) { | |
| 360 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 361 if (region is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 362 if (region.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 363 OS.CombineRgn (handle, handle, region.handle, OS.RGN_AND); | |
| 364 } | |
| 365 | |
| 366 /** | |
| 367 * Returns <code>true</code> if the rectangle described by the | |
| 368 * arguments intersects with any of the polygons the receiver | |
| 369 * maintains to describe its area, and <code>false</code> otherwise. | |
| 370 * | |
| 371 * @param x the x coordinate of the origin of the rectangle | |
| 372 * @param y the y coordinate of the origin of the rectangle | |
| 373 * @param width the width of the rectangle | |
| 374 * @param height the height of the rectangle | |
| 375 * @return <code>true</code> if the rectangle intersects with the receiver, and <code>false</code> otherwise | |
| 376 * | |
| 377 * @exception DWTException <ul> | |
| 378 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 379 * </ul> | |
| 380 * | |
| 381 * @see Rectangle#intersects(Rectangle) | |
| 382 */ | |
| 383 public bool intersects (int x, int y, int width, int height) { | |
| 384 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 385 RECT r; | |
| 386 OS.SetRect (&r, x, y, x + width, y + height); | |
| 387 return cast(bool) OS.RectInRegion (handle, &r); | |
| 388 } | |
| 389 | |
| 390 /** | |
| 391 * Returns <code>true</code> if the given rectangle intersects | |
| 392 * with any of the polygons the receiver maintains to describe | |
| 393 * its area and <code>false</code> otherwise. | |
| 394 * | |
| 395 * @param rect the rectangle to test for intersection | |
| 396 * @return <code>true</code> if the rectangle intersects with the receiver, and <code>false</code> otherwise | |
| 397 * | |
| 398 * @exception IllegalArgumentException <ul> | |
| 399 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 400 * </ul> | |
| 401 * @exception DWTException <ul> | |
| 402 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 403 * </ul> | |
| 404 * | |
| 405 * @see Rectangle#intersects(Rectangle) | |
| 406 */ | |
| 407 public bool intersects (Rectangle rect) { | |
| 408 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 409 if (rect is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 410 return intersects(rect.x, rect.y, rect.width, rect.height); | |
| 411 } | |
| 412 | |
| 413 /** | |
| 414 * Returns <code>true</code> if the region has been disposed, | |
| 415 * and <code>false</code> otherwise. | |
| 416 * <p> | |
| 417 * This method gets the dispose state for the region. | |
| 418 * When a region has been disposed, it is an error to | |
| 419 * invoke any other method using the region. | |
| 420 * | |
| 421 * @return <code>true</code> when the region is disposed, and <code>false</code> otherwise | |
| 422 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
23
diff
changeset
|
423 override public bool isDisposed() { |
| 20 | 424 return handle is null; |
| 425 } | |
| 426 | |
| 427 /** | |
| 428 * Returns <code>true</code> if the receiver does not cover any | |
| 429 * area in the (x, y) coordinate plane, and <code>false</code> if | |
| 430 * the receiver does cover some area in the plane. | |
| 431 * | |
| 432 * @return <code>true</code> if the receiver is empty, and <code>false</code> otherwise | |
| 433 * | |
| 434 * @exception DWTException <ul> | |
| 435 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 436 * </ul> | |
| 437 */ | |
| 438 public bool isEmpty () { | |
| 439 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 440 RECT rect; | |
| 441 auto result = OS.GetRgnBox (handle, &rect); | |
| 442 if (result is OS.NULLREGION) return true; | |
| 443 return ((rect.right - rect.left) <= 0) || ((rect.bottom - rect.top) <= 0); | |
| 444 } | |
| 445 | |
| 446 /** | |
| 447 * Subtracts the given polygon from the collection of polygons | |
| 448 * the receiver maintains to describe its area. | |
| 449 * | |
| 450 * @param pointArray points that describe the polygon to merge with the receiver | |
| 451 * | |
| 452 * @exception IllegalArgumentException <ul> | |
| 453 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 454 * </ul> | |
| 455 * @exception DWTException <ul> | |
| 456 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 457 * </ul> | |
| 458 * | |
| 459 * @since 3.0 | |
| 460 */ | |
| 461 public void subtract (int[] pointArray) { | |
| 462 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 463 if (pointArray is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 117 | 464 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
| 20 | 465 auto polyRgn = OS.CreatePolygonRgn(cast(POINT*)pointArray.ptr, pointArray.length / 2, OS.ALTERNATE); |
| 466 OS.CombineRgn (handle, handle, polyRgn, OS.RGN_DIFF); | |
| 467 OS.DeleteObject (polyRgn); | |
| 468 } | |
| 469 | |
| 470 /** | |
| 471 * Subtracts the given rectangle from the collection of polygons | |
| 472 * the receiver maintains to describe its area. | |
| 473 * | |
| 474 * @param rect the rectangle to subtract from the receiver | |
| 475 * | |
| 476 * @exception IllegalArgumentException <ul> | |
| 477 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 478 * <li>ERROR_INVALID_ARGUMENT - if the rectangle's width or height is negative</li> | |
| 479 * </ul> | |
| 480 * @exception DWTException <ul> | |
| 481 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 482 * </ul> | |
| 483 * | |
| 484 * @since 3.0 | |
| 485 */ | |
| 486 public void subtract (Rectangle rect) { | |
| 487 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 488 if (rect is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 489 subtract (rect.x, rect.y, rect.width, rect.height); | |
| 490 } | |
| 491 | |
| 492 /** | |
| 493 * Subtracts the given rectangle from the collection of polygons | |
| 494 * the receiver maintains to describe its area. | |
| 495 * | |
| 496 * @param x the x coordinate of the rectangle | |
| 497 * @param y the y coordinate of the rectangle | |
| 498 * @param width the width coordinate of the rectangle | |
| 499 * @param height the height coordinate of the rectangle | |
| 500 * | |
| 501 * @exception IllegalArgumentException <ul> | |
| 502 * <li>ERROR_INVALID_ARGUMENT - if the rectangle's width or height is negative</li> | |
| 503 * </ul> | |
| 504 * @exception DWTException <ul> | |
| 505 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 506 * </ul> | |
| 507 * | |
| 508 * @since 3.1 | |
| 509 */ | |
| 510 public void subtract (int x, int y, int width, int height) { | |
| 511 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 512 if (width < 0 || height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 513 auto rectRgn = OS.CreateRectRgn (x, y, x + width, y + height); | |
| 514 OS.CombineRgn (handle, handle, rectRgn, OS.RGN_DIFF); | |
| 515 OS.DeleteObject (rectRgn); | |
| 516 } | |
| 517 | |
| 518 /** | |
| 519 * Subtracts all of the polygons which make up the area covered | |
| 520 * by the argument from the collection of polygons the receiver | |
| 521 * maintains to describe its area. | |
| 522 * | |
| 523 * @param region the region to subtract | |
| 524 * | |
| 525 * @exception IllegalArgumentException <ul> | |
| 526 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 527 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 528 * </ul> | |
| 529 * @exception DWTException <ul> | |
| 530 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 531 * </ul> | |
| 532 * | |
| 533 * @since 3.0 | |
| 534 */ | |
| 535 public void subtract (Region region) { | |
| 536 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 537 if (region is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 538 if (region.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 539 OS.CombineRgn (handle, handle, region.handle, OS.RGN_DIFF); | |
| 540 } | |
| 541 | |
| 542 /** | |
| 543 * Translate all of the polygons the receiver maintains to describe | |
| 544 * its area by the specified point. | |
| 545 * | |
| 546 * @param x the x coordinate of the point to translate | |
| 547 * @param y the y coordinate of the point to translate | |
| 548 * | |
| 549 * @exception DWTException <ul> | |
| 550 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 551 * </ul> | |
| 552 * | |
| 553 * @since 3.1 | |
| 554 */ | |
| 555 public void translate (int x, int y) { | |
| 556 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 557 OS.OffsetRgn (handle, x, y); | |
| 558 } | |
| 559 | |
| 560 /** | |
| 561 * Translate all of the polygons the receiver maintains to describe | |
| 562 * its area by the specified point. | |
| 563 * | |
| 564 * @param pt the point to translate | |
| 565 * | |
| 566 * @exception IllegalArgumentException <ul> | |
| 567 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 568 * </ul> | |
| 569 * @exception DWTException <ul> | |
| 570 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 571 * </ul> | |
| 572 * | |
| 573 * @since 3.1 | |
| 574 */ | |
| 575 public void translate (Point pt) { | |
| 576 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 577 if (pt is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 578 translate (pt.x, pt.y); | |
| 579 } | |
| 580 | |
| 581 /** | |
| 582 * Returns a string containing a concise, human-readable | |
| 583 * description of the receiver. | |
| 584 * | |
| 585 * @return a string representation of the receiver | |
| 586 */ | |
|
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587 override public String toString () { |
| 20 | 588 if (isDisposed()) return "Region {*DISPOSED*}"; |
| 589 return Format( "Region {{{}}", handle ); | |
| 590 } | |
| 591 | |
| 592 /** | |
| 593 * Invokes platform specific functionality to allocate a new region. | |
| 594 * <p> | |
| 595 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public | |
| 596 * API for <code>Region</code>. It is marked public only so that it | |
| 597 * can be shared within the packages provided by DWT. It is not | |
| 598 * available on all platforms, and should never be called from | |
| 599 * application code. | |
| 600 * </p> | |
| 601 * | |
| 602 * @param device the device on which to allocate the region | |
| 603 * @param handle the handle for the region | |
| 604 * @return a new region object containing the specified device and handle | |
| 605 */ | |
| 606 public static Region win32_new(Device device, HRGN handle) { | |
|
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607 auto region = new Region(device, handle); |
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608 region.disposeChecking = false; |
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609 return region; |
| 20 | 610 } |
| 611 | |
| 612 } |