objects/clipping.c

   1 /*
   2  * DC clipping functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #include "dc.h"
   8 #include "metafile.h"
   9 #include "region.h"
  10 #include "debug.h"
  11 #include "wine/winuser16.h"
  12
  13 #define UPDATE_DIRTY_DC(dc) \
  14  do { \
  15    if ((dc)->hookProc && !((dc)->w.flags & (DC_SAVED | DC_MEMORY))) \
  16      (dc)->hookProc( (dc)->hSelf, DCHC_INVALIDVISRGN, (dc)->dwHookData, 0 ); \
  17  } while(0)
  18
  19
  20
  21 /***********************************************************************
  22  *           CLIPPING_UpdateGCRegion
  23  *
  24  * Update the GC clip region when the ClipRgn or VisRgn have changed.
  25  */
  26 void CLIPPING_UpdateGCRegion( DC * dc )
  27 {
  28     if (!dc->w.hGCClipRgn) dc->w.hGCClipRgn = CreateRectRgn( 0, 0, 0, 0 );
  29
  30     if (!dc->w.hVisRgn)
  31     {
  32         ERR(region, "hVisRgn is zero. Please report this.\n" );
  33         exit(1);
  34     }
  35
  36     if (dc->w.flags & DC_DIRTY)
  37     {
  38         UPDATE_DIRTY_DC(dc);
  39         dc->w.flags &= ~DC_DIRTY;
  40     }
  41
  42     if (!dc->w.hClipRgn)
  43         CombineRgn( dc->w.hGCClipRgn, dc->w.hVisRgn, 0, RGN_COPY );
  44     else
  45         CombineRgn(dc->w.hGCClipRgn, dc->w.hClipRgn, dc->w.hVisRgn, RGN_AND);
  46     if (dc->funcs->pSetDeviceClipping) dc->funcs->pSetDeviceClipping( dc );
  47 }
  48
  49
  50 /***********************************************************************
  51  *           SelectClipRgn16    (GDI.44)
  52  */
  53 INT16 WINAPI SelectClipRgn16( HDC16 hdc, HRGN16 hrgn )
  54 {
  55     return (INT16)SelectClipRgn( hdc, hrgn );
  56 }
  57
  58
  59 /***********************************************************************
  60  *           SelectClipRgn32    (GDI32.297)
  61  */
  62 INT WINAPI SelectClipRgn( HDC hdc, HRGN hrgn )
  63 {
  64     return ExtSelectClipRgn( hdc, hrgn, RGN_COPY );
  65 }
  66
  67 /******************************************************************************
  68  *              ExtSelectClipRgn        [GDI32.97]
  69  */
  70 INT WINAPI ExtSelectClipRgn( HDC hdc, HRGN hrgn, INT fnMode )
  71 {
  72     INT retval;
  73     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  74     if (!dc) return ERROR;
  75
  76     TRACE( clipping, "%04x %04x %d\n", hdc, hrgn, fnMode );
  77
  78     if (!hrgn)
  79     {
  80         if (fnMode == RGN_COPY)
  81         {
  82             if (dc->w.hClipRgn) DeleteObject16( dc->w.hClipRgn );
  83             dc->w.hClipRgn = 0;
  84             retval = SIMPLEREGION; /* Clip region == whole DC */
  85         }
  86         else
  87         {
  88             FIXME(clipping, "Unimplemented: hrgn NULL in mode: %d\n", fnMode);
  89             return ERROR;
  90         }
  91     }
  92     else
  93     {
  94         if (!dc->w.hClipRgn)
  95         {
  96             RECT rect;
  97             GetRgnBox( dc->w.hVisRgn, &rect );
  98             dc->w.hClipRgn = CreateRectRgnIndirect( &rect );
  99         }
 100
 101         OffsetRgn( dc->w.hClipRgn, -dc->w.DCOrgX, -dc->w.DCOrgY );
 102         if(fnMode == RGN_COPY)
 103             retval = CombineRgn( dc->w.hClipRgn, hrgn, 0, fnMode );
 104         else
 105             retval = CombineRgn( dc->w.hClipRgn, dc->w.hClipRgn, hrgn, fnMode);
 106         OffsetRgn( dc->w.hClipRgn, dc->w.DCOrgX, dc->w.DCOrgY );
 107     }
 108
 109
 110     CLIPPING_UpdateGCRegion( dc );
 111     GDI_HEAP_UNLOCK( hdc );
 112     return retval;
 113 }
 114
 115 /***********************************************************************
 116  *           SelectVisRgn    (GDI.105)
 117  */
 118 INT16 WINAPI SelectVisRgn16( HDC16 hdc, HRGN16 hrgn )
 119 {
 120     int retval;
 121     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 122     if (!dc || !hrgn) return ERROR;
 123
 124     TRACE(clipping, "%04x %04x\n", hdc, hrgn );
 125
 126     dc->w.flags &= ~DC_DIRTY;
 127
 128     retval = CombineRgn16( dc->w.hVisRgn, hrgn, 0, RGN_COPY );
 129     CLIPPING_UpdateGCRegion( dc );
 130     GDI_HEAP_UNLOCK( hdc );
 131     return retval;
 132 }
 133
 134
 135 /***********************************************************************
 136  *           OffsetClipRgn16    (GDI.32)
 137  */
 138 INT16 WINAPI OffsetClipRgn16( HDC16 hdc, INT16 x, INT16 y )
 139 {
 140     return (INT16)OffsetClipRgn( hdc, x, y );
 141 }
 142
 143
 144 /***********************************************************************
 145  *           OffsetClipRgn32    (GDI32.255)
 146  */
 147 INT WINAPI OffsetClipRgn( HDC hdc, INT x, INT y )
 148 {
 149     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 150     if (!dc)
 151     {
 152         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 153         if (!dc) return ERROR;
 154         MF_MetaParam2(dc, META_OFFSETCLIPRGN, x, y);
 155         GDI_HEAP_UNLOCK( hdc );
 156         return NULLREGION;   /* ?? */
 157     }
 158
 159     TRACE(clipping, "%04x %d,%d\n", hdc, x, y );
 160
 161     if (dc->w.hClipRgn)
 162     {
 163         INT ret = OffsetRgn( dc->w.hClipRgn, XLPTODP(dc,x), YLPTODP(dc,y));
 164         CLIPPING_UpdateGCRegion( dc );
 165         GDI_HEAP_UNLOCK( hdc );
 166         return ret;
 167     }
 168     GDI_HEAP_UNLOCK( hdc );
 169     return SIMPLEREGION; /* Clip region == client area */
 170 }
 171
 172
 173 /***********************************************************************
 174  *           OffsetVisRgn    (GDI.102)
 175  */
 176 INT16 WINAPI OffsetVisRgn16( HDC16 hdc, INT16 x, INT16 y )
 177 {
 178     INT16 retval;
 179     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 180     if (!dc) return ERROR;
 181     TRACE(clipping, "%04x %d,%d\n", hdc, x, y );
 182     retval = OffsetRgn( dc->w.hVisRgn, x, y );
 183     CLIPPING_UpdateGCRegion( dc );
 184     GDI_HEAP_UNLOCK( hdc );
 185     return retval;
 186 }
 187
 188
 189 /***********************************************************************
 190  *           CLIPPING_IntersectClipRect
 191  *
 192  * Helper function for {Intersect,Exclude}ClipRect, can be called from
 193  * elsewhere (like ExtTextOut()) to skip redundant metafile update and
 194  * coordinate conversion.
 195  */
 196 INT CLIPPING_IntersectClipRect( DC * dc, INT left, INT top,
 197                                   INT right, INT bottom, UINT flags )
 198 {
 199     HRGN newRgn;
 200     INT ret;
 201
 202     left   += dc->w.DCOrgX;
 203     right  += dc->w.DCOrgX;
 204     top    += dc->w.DCOrgY;
 205     bottom += dc->w.DCOrgY;
 206
 207     if (!(newRgn = CreateRectRgn( left, top, right, bottom ))) return ERROR;
 208     if (!dc->w.hClipRgn)
 209     {
 210        if( flags & CLIP_INTERSECT )
 211        {
 212            dc->w.hClipRgn = newRgn;
 213            CLIPPING_UpdateGCRegion( dc );
 214            return SIMPLEREGION;
 215        }
 216        else if( flags & CLIP_EXCLUDE )
 217        {
 218            dc->w.hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 219            CombineRgn( dc->w.hClipRgn, dc->w.hVisRgn, 0, RGN_COPY );
 220        }
 221        else WARN(clipping,"No hClipRgn and flags are %x\n",flags);
 222     }
 223
 224     ret = CombineRgn( newRgn, dc->w.hClipRgn, newRgn,
 225                         (flags & CLIP_EXCLUDE) ? RGN_DIFF : RGN_AND );
 226     if (ret != ERROR)
 227     {
 228         if (!(flags & CLIP_KEEPRGN)) DeleteObject( dc->w.hClipRgn );
 229         dc->w.hClipRgn = newRgn;
 230         CLIPPING_UpdateGCRegion( dc );
 231     }
 232     else DeleteObject( newRgn );
 233     return ret;
 234 }
 235
 236
 237 /***********************************************************************
 238  *           ExcludeClipRect16    (GDI.21)
 239  */
 240 INT16 WINAPI ExcludeClipRect16( HDC16 hdc, INT16 left, INT16 top,
 241                                 INT16 right, INT16 bottom )
 242 {
 243     return (INT16)ExcludeClipRect( hdc, left, top, right, bottom );
 244 }
 245
 246
 247 /***********************************************************************
 248  *           ExcludeClipRect32    (GDI32.92)
 249  */
 250 INT WINAPI ExcludeClipRect( HDC hdc, INT left, INT top,
 251                                 INT right, INT bottom )
 252 {
 253     INT ret;
 254     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 255     if (!dc)
 256     {
 257         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 258         if (!dc) return ERROR;
 259         MF_MetaParam4(dc, META_EXCLUDECLIPRECT, left, top, right, bottom);
 260         GDI_HEAP_UNLOCK( hdc );
 261         return NULLREGION;   /* ?? */
 262     }
 263
 264     left   = XLPTODP( dc, left );
 265     right  = XLPTODP( dc, right );
 266     top    = YLPTODP( dc, top );
 267     bottom = YLPTODP( dc, bottom );
 268
 269     TRACE(clipping, "%04x %dx%d,%dx%d\n",
 270             hdc, left, top, right, bottom );
 271     ret = CLIPPING_IntersectClipRect( dc, left, top, right, bottom, CLIP_EXCLUDE );
 272     GDI_HEAP_UNLOCK( hdc );
 273     return ret;
 274 }
 275
 276
 277 /***********************************************************************
 278  *           IntersectClipRect16    (GDI.22)
 279  */
 280 INT16 WINAPI IntersectClipRect16( HDC16 hdc, INT16 left, INT16 top,
 281                                   INT16 right, INT16 bottom )
 282 {
 283     return (INT16)IntersectClipRect( hdc, left, top, right, bottom );
 284 }
 285
 286
 287 /***********************************************************************
 288  *           IntersectClipRect32    (GDI32.245)
 289  */
 290 INT WINAPI IntersectClipRect( HDC hdc, INT left, INT top,
 291                                   INT right, INT bottom )
 292 {
 293     INT ret;
 294     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 295     if (!dc)
 296     {
 297         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 298         if (!dc) return ERROR;
 299         MF_MetaParam4(dc, META_INTERSECTCLIPRECT, left, top, right, bottom);
 300         GDI_HEAP_UNLOCK( hdc );
 301         return NULLREGION;   /* ?? */
 302     }
 303
 304     left   = XLPTODP( dc, left );
 305     right  = XLPTODP( dc, right );
 306     top    = YLPTODP( dc, top );
 307     bottom = YLPTODP( dc, bottom );
 308
 309     TRACE(clipping, "%04x %dx%d,%dx%d\n",
 310             hdc, left, top, right, bottom );
 311     ret = CLIPPING_IntersectClipRect( dc, left, top, right, bottom, CLIP_INTERSECT );
 312     GDI_HEAP_UNLOCK( hdc );
 313     return ret;
 314 }
 315
 316
 317 /***********************************************************************
 318  *           CLIPPING_IntersectVisRect
 319  *
 320  * Helper function for {Intersect,Exclude}VisRect, can be called from
 321  * elsewhere (like ExtTextOut()) to skip redundant metafile update and
 322  * coordinate conversion.
 323  */
 324 INT CLIPPING_IntersectVisRect( DC * dc, INT left, INT top,
 325                                  INT right, INT bottom,
 326                                  BOOL exclude )
 327 {
 328     HRGN tempRgn, newRgn;
 329     INT ret;
 330
 331     left   += dc->w.DCOrgX;
 332     right  += dc->w.DCOrgX;
 333     top    += dc->w.DCOrgY;
 334     bottom += dc->w.DCOrgY;
 335
 336     if (!(newRgn = CreateRectRgn( 0, 0, 0, 0 ))) return ERROR;
 337     if (!(tempRgn = CreateRectRgn( left, top, right, bottom )))
 338     {
 339         DeleteObject( newRgn );
 340         return ERROR;
 341     }
 342     ret = CombineRgn( newRgn, dc->w.hVisRgn, tempRgn,
 343                         exclude ? RGN_DIFF : RGN_AND );
 344     DeleteObject( tempRgn );
 345
 346     if (ret != ERROR)
 347     {
 348         RGNOBJ *newObj  = (RGNOBJ*)GDI_GetObjPtr( newRgn, REGION_MAGIC);
 349         RGNOBJ *prevObj = (RGNOBJ*)GDI_GetObjPtr( dc->w.hVisRgn, REGION_MAGIC);
 350         if (newObj && prevObj) newObj->header.hNext = prevObj->header.hNext;
 351         DeleteObject( dc->w.hVisRgn );
 352         dc->w.hVisRgn = newRgn;
 353         CLIPPING_UpdateGCRegion( dc );
 354         GDI_HEAP_UNLOCK( newRgn );
 355     }
 356     else DeleteObject( newRgn );
 357     return ret;
 358 }
 359
 360
 361 /***********************************************************************
 362  *           ExcludeVisRect    (GDI.73)
 363  */
 364 INT16 WINAPI ExcludeVisRect16( HDC16 hdc, INT16 left, INT16 top,
 365                              INT16 right, INT16 bottom )
 366 {
 367     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 368     if (!dc) return ERROR;
 369
 370     left   = XLPTODP( dc, left );
 371     right  = XLPTODP( dc, right );
 372     top    = YLPTODP( dc, top );
 373     bottom = YLPTODP( dc, bottom );
 374
 375     TRACE(clipping, "%04x %dx%d,%dx%d\n",
 376             hdc, left, top, right, bottom );
 377
 378     return CLIPPING_IntersectVisRect( dc, left, top, right, bottom, TRUE );
 379 }
 380
 381
 382 /***********************************************************************
 383  *           IntersectVisRect    (GDI.98)
 384  */
 385 INT16 WINAPI IntersectVisRect16( HDC16 hdc, INT16 left, INT16 top,
 386                                INT16 right, INT16 bottom )
 387 {
 388     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 389     if (!dc) return ERROR;
 390
 391     left   = XLPTODP( dc, left );
 392     right  = XLPTODP( dc, right );
 393     top    = YLPTODP( dc, top );
 394     bottom = YLPTODP( dc, bottom );
 395
 396     TRACE(clipping, "%04x %dx%d,%dx%d\n",
 397             hdc, left, top, right, bottom );
 398
 399     return CLIPPING_IntersectVisRect( dc, left, top, right, bottom, FALSE );
 400 }
 401
 402
 403 /***********************************************************************
 404  *           PtVisible16    (GDI.103)
 405  */
 406 BOOL16 WINAPI PtVisible16( HDC16 hdc, INT16 x, INT16 y )
 407 {
 408     return PtVisible( hdc, x, y );
 409 }
 410
 411
 412 /***********************************************************************
 413  *           PtVisible32    (GDI32.279)
 414  */
 415 BOOL WINAPI PtVisible( HDC hdc, INT x, INT y )
 416 {
 417     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 418     if (!dc) return ERROR;
 419
 420     TRACE(clipping, "%04x %d,%d\n", hdc, x, y );
 421     if (!dc->w.hGCClipRgn) return FALSE;
 422
 423     if( dc->w.flags & DC_DIRTY ) UPDATE_DIRTY_DC(dc);
 424     dc->w.flags &= ~DC_DIRTY;
 425
 426     return PtInRegion( dc->w.hGCClipRgn, XLPTODP(dc,x) + dc->w.DCOrgX,
 427                                            YLPTODP(dc,y) + dc->w.DCOrgY );
 428 }
 429
 430
 431 /***********************************************************************
 432  *           RectVisible16    (GDI.104)
 433  */
 434 BOOL16 WINAPI RectVisible16( HDC16 hdc, const RECT16* rect )
 435 {
 436     RECT16 tmpRect;
 437     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 438     if (!dc) return FALSE;
 439     TRACE(clipping,"%04x %d,%dx%d,%d\n",
 440                      hdc, rect->left, rect->top, rect->right, rect->bottom );
 441     if (!dc->w.hGCClipRgn) return FALSE;
 442     /* copy rectangle to avoid overwriting by LPtoDP */
 443     tmpRect = *rect;
 444     LPtoDP16( hdc, (LPPOINT16)&tmpRect, 2 );
 445     OffsetRect16( &tmpRect, dc->w.DCOrgX, dc->w.DCOrgY );
 446     return RectInRegion16( dc->w.hGCClipRgn, &tmpRect );
 447 }
 448
 449
 450 /***********************************************************************
 451  *           RectVisible32    (GDI32.282)
 452  */
 453 BOOL WINAPI RectVisible( HDC hdc, const RECT* rect )
 454 {
 455     RECT16 rect16;
 456     CONV_RECT32TO16( rect, &rect16 );
 457     return RectVisible16( (HDC16)hdc, &rect16 );
 458 }
 459
 460
 461 /***********************************************************************
 462  *           GetClipBox16    (GDI.77)
 463  */
 464 INT16 WINAPI GetClipBox16( HDC16 hdc, LPRECT16 rect )
 465 {
 466     int ret;
 467     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 468     if (!dc) return ERROR;
 469     ret = GetRgnBox16( dc->w.hGCClipRgn, rect );
 470     OffsetRect16( rect, -dc->w.DCOrgX, -dc->w.DCOrgY );
 471     DPtoLP16( hdc, (LPPOINT16)rect, 2 );
 472     TRACE(clipping, "%d,%d-%d,%d\n",
 473             rect->left,rect->top,rect->right,rect->bottom );
 474     return ret;
 475 }
 476
 477
 478 /***********************************************************************
 479  *           GetClipBox32    (GDI32.162)
 480  */
 481 INT WINAPI GetClipBox( HDC hdc, LPRECT rect )
 482 {
 483     INT ret;
 484     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 485     if (!dc) return ERROR;
 486     ret = GetRgnBox( dc->w.hGCClipRgn, rect );
 487     OffsetRect( rect, -dc->w.DCOrgX, -dc->w.DCOrgY );
 488     DPtoLP( hdc, (LPPOINT)rect, 2 );
 489     return ret;
 490 }
 491
 492
 493 /***********************************************************************
 494  *           GetClipRgn32  (GDI32.163)
 495  */
 496 INT WINAPI GetClipRgn( HDC hdc, HRGN hRgn )
 497 {
 498     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 499     if( dc && hRgn )
 500     {
 501       if( dc->w.hClipRgn )
 502       {
 503         /* this assumes that dc->w.hClipRgn is in coordinates
 504            relative to the device (not DC origin) */
 505
 506         if( CombineRgn(hRgn, dc->w.hClipRgn, 0, RGN_COPY) != ERROR )
 507         {
 508             OffsetRgn( hRgn, -dc->w.DCOrgX, -dc->w.DCOrgY );
 509             return 1;
 510         }
 511       }
 512       else return 0;
 513     }
 514     return -1;
 515 }
 516
 517 /***********************************************************************
 518  *           SaveVisRgn    (GDI.129)
 519  */
 520 HRGN16 WINAPI SaveVisRgn16( HDC16 hdc )
 521 {
 522     HRGN copy;
 523     RGNOBJ *obj, *copyObj;
 524     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 525     if (!dc) return 0;
 526     TRACE(clipping, "%04x\n", hdc );
 527     if (!dc->w.hVisRgn)
 528     {
 529         ERR(region, "hVisRgn is zero. Please report this.\n" );
 530         exit(1);
 531     }
 532     if( dc->w.flags & DC_DIRTY ) UPDATE_DIRTY_DC(dc);
 533     dc->w.flags &= ~DC_DIRTY;
 534
 535     if (!(obj = (RGNOBJ *) GDI_GetObjPtr( dc->w.hVisRgn, REGION_MAGIC )))
 536     {
 537         GDI_HEAP_UNLOCK( hdc );
 538         return 0;
 539     }
 540     if (!(copy = CreateRectRgn( 0, 0, 0, 0 )))
 541     {
 542         GDI_HEAP_UNLOCK( dc->w.hVisRgn );
 543         GDI_HEAP_UNLOCK( hdc );
 544         return 0;
 545     }
 546     CombineRgn( copy, dc->w.hVisRgn, 0, RGN_COPY );
 547     if (!(copyObj = (RGNOBJ *) GDI_GetObjPtr( copy, REGION_MAGIC )))
 548     {
 549         GDI_HEAP_UNLOCK( dc->w.hVisRgn );
 550         GDI_HEAP_UNLOCK( hdc );
 551         return 0;
 552     }
 553     copyObj->header.hNext = obj->header.hNext;
 554     obj->header.hNext = copy;
 555     GDI_HEAP_UNLOCK( dc->w.hVisRgn );
 556     GDI_HEAP_UNLOCK( hdc );
 557     GDI_HEAP_UNLOCK( copy );
 558     return copy;
 559 }
 560
 561
 562 /***********************************************************************
 563  *           RestoreVisRgn    (GDI.130)
 564  */
 565 INT16 WINAPI RestoreVisRgn16( HDC16 hdc )
 566 {
 567     HRGN saved;
 568     RGNOBJ *obj, *savedObj;
 569     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 570     INT16 ret;
 571
 572     if (!dc) return ERROR;
 573     if (!dc->w.hVisRgn)
 574     {
 575         GDI_HEAP_UNLOCK( hdc );
 576         return ERROR;
 577     }
 578     TRACE(clipping, "%04x\n", hdc );
 579     if (!(obj = (RGNOBJ *) GDI_GetObjPtr( dc->w.hVisRgn, REGION_MAGIC )))
 580     {
 581         GDI_HEAP_UNLOCK( hdc );
 582         return ERROR;
 583     }
 584     if (!(saved = obj->header.hNext))
 585     {
 586         GDI_HEAP_UNLOCK( dc->w.hVisRgn );
 587         GDI_HEAP_UNLOCK( hdc );
 588         return ERROR;
 589     }
 590     if (!(savedObj = (RGNOBJ *) GDI_GetObjPtr( saved, REGION_MAGIC )))
 591     {
 592         GDI_HEAP_UNLOCK( dc->w.hVisRgn );
 593         GDI_HEAP_UNLOCK( hdc );
 594         return ERROR;
 595     }
 596     DeleteObject( dc->w.hVisRgn );
 597     dc->w.hVisRgn = saved;
 598     CLIPPING_UpdateGCRegion( dc );
 599     GDI_HEAP_UNLOCK( hdc );
 600     ret = savedObj->rgn->type; /* FIXME */
 601     GDI_HEAP_UNLOCK( saved );
 602     return ret;
 603 }