graphics/mapping.c

   1 /*
   2  * GDI mapping mode functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #include <math.h>
   8 #include "dc.h"
   9 #include "debug.h"
  10
  11
  12 /***********************************************************************
  13  *           MAPPING_FixIsotropic
  14  *
  15  * Fix viewport extensions for isotropic mode.
  16  */
  17 void MAPPING_FixIsotropic( DC * dc )
  18 {
  19     double xdim = (double)dc->vportExtX * dc->w.devCaps->horzSize /
  20                   (dc->w.devCaps->horzRes * dc->wndExtX);
  21     double ydim = (double)dc->vportExtY * dc->w.devCaps->vertSize /
  22                   (dc->w.devCaps->vertRes * dc->wndExtY);
  23     if (xdim > ydim)
  24     {
  25         dc->vportExtX = dc->vportExtX * fabs( ydim / xdim );
  26         if (!dc->vportExtX) dc->vportExtX = 1;
  27     }
  28     else
  29     {
  30         dc->vportExtY = dc->vportExtY * fabs( xdim / ydim );
  31         if (!dc->vportExtY) dc->vportExtY = 1;
  32     }
  33 }
  34
  35
  36 /***********************************************************************
  37  *           DPtoLP16    (GDI.67)
  38  */
  39 BOOL16 WINAPI DPtoLP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  40 {
  41     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  42     if (!dc) return FALSE;
  43
  44     while (count--)
  45     {
  46         points->x = XDPTOLP( dc, points->x );
  47         points->y = YDPTOLP( dc, points->y );
  48         points++;
  49     }
  50     return TRUE;
  51 }
  52
  53
  54 /***********************************************************************
  55  *           DPtoLP32    (GDI32.65)
  56  */
  57 BOOL32 WINAPI DPtoLP32( HDC32 hdc, LPPOINT32 points, INT32 count )
  58 {
  59     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  60     if (!dc) return FALSE;
  61
  62     while (count--)
  63     {
  64         if (!INTERNAL_DPTOLP( dc, points ))
  65             return FALSE;
  66         points++;
  67     }
  68     return TRUE;
  69 }
  70
  71
  72 /***********************************************************************
  73  *           LPtoDP16    (GDI.99)
  74  */
  75 BOOL16 WINAPI LPtoDP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  76 {
  77     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  78     if (!dc) return FALSE;
  79
  80     while (count--)
  81     {
  82         points->x = XLPTODP( dc, points->x );
  83         points->y = YLPTODP( dc, points->y );
  84         points++;
  85     }
  86     return TRUE;
  87 }
  88
  89
  90 /***********************************************************************
  91  *           LPtoDP32    (GDI32.247)
  92  */
  93 BOOL32 WINAPI LPtoDP32( HDC32 hdc, LPPOINT32 points, INT32 count )
  94 {
  95     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  96     if (!dc) return FALSE;
  97
  98     while (count--)
  99     {
 100         INTERNAL_LPTODP( dc, points );
 101         points++;
 102     }
 103     return TRUE;
 104 }
 105
 106
 107 /***********************************************************************
 108  *           SetMapMode16    (GDI.3)
 109  */
 110 INT16 WINAPI SetMapMode16( HDC16 hdc, INT16 mode )
 111 {
 112     return SetMapMode32( hdc, mode );
 113 }
 114
 115
 116 /***********************************************************************
 117  *           SetMapMode32    (GDI32.321)
 118  */
 119 INT32 WINAPI SetMapMode32( HDC32 hdc, INT32 mode )
 120 {
 121     INT32 prevMode;
 122     DC * dc = DC_GetDCPtr( hdc );
 123     if (!dc) return 0;
 124     if (dc->funcs->pSetMapMode) return dc->funcs->pSetMapMode( dc, mode );
 125
 126     TRACE(gdi, "%04x %d\n", hdc, mode );
 127
 128     prevMode = dc->w.MapMode;
 129     switch(mode)
 130     {
 131       case MM_TEXT:
 132           dc->wndOrgX   = dc->wndOrgY   = 0;
 133           dc->vportOrgX = dc->vportOrgY = 0;
 134           dc->wndExtX   = 1;
 135           dc->wndExtY   = 1;
 136           dc->vportExtX = 1;
 137           dc->vportExtY = 1;
 138           break;
 139
 140       case MM_LOMETRIC:
 141       case MM_ISOTROPIC:
 142           dc->wndOrgX   = dc->wndOrgY   = 0;
 143           dc->vportOrgX = dc->vportOrgY = 0;
 144           dc->wndExtX   = dc->w.devCaps->horzSize;
 145           dc->wndExtY   = dc->w.devCaps->vertSize;
 146           dc->vportExtX = dc->w.devCaps->horzRes / 10;
 147           dc->vportExtY = dc->w.devCaps->vertRes / -10;
 148           break;
 149
 150       case MM_HIMETRIC:
 151           dc->wndOrgX   = dc->wndOrgY   = 0;
 152           dc->vportOrgX = dc->vportOrgY = 0;
 153           dc->wndExtX   = dc->w.devCaps->horzSize * 10;
 154           dc->wndExtY   = dc->w.devCaps->vertSize * 10;
 155           dc->vportExtX = dc->w.devCaps->horzRes / 10;
 156           dc->vportExtY = dc->w.devCaps->vertRes / -10;
 157           break;
 158
 159       case MM_LOENGLISH:
 160           dc->wndOrgX   = dc->wndOrgY   = 0;
 161           dc->vportOrgX = dc->vportOrgY = 0;
 162           dc->wndExtX   = dc->w.devCaps->horzSize;
 163           dc->wndExtY   = dc->w.devCaps->vertSize;
 164           dc->vportExtX = 254L * dc->w.devCaps->horzRes / 1000;
 165           dc->vportExtY = -254L * dc->w.devCaps->vertRes / 1000;
 166           break;
 167
 168       case MM_HIENGLISH:
 169           dc->wndOrgX   = dc->wndOrgY   = 0;
 170           dc->vportOrgX = dc->vportOrgY = 0;
 171           dc->wndExtX   = dc->w.devCaps->horzSize * 10;
 172           dc->wndExtY   = dc->w.devCaps->vertSize * 10;
 173           dc->vportExtX = 254L * dc->w.devCaps->horzRes / 1000;
 174           dc->vportExtY = -254L * dc->w.devCaps->vertRes / 1000;
 175           break;
 176
 177       case MM_TWIPS:
 178           dc->wndOrgX   = dc->wndOrgY   = 0;
 179           dc->vportOrgX = dc->vportOrgY = 0;
 180           dc->wndExtX   = 144L * dc->w.devCaps->horzSize / 10;
 181           dc->wndExtY   = 144L * dc->w.devCaps->vertSize / 10;
 182           dc->vportExtX = 254L * dc->w.devCaps->horzRes / 1000;
 183           dc->vportExtY = -254L * dc->w.devCaps->vertRes / 1000;
 184           break;
 185
 186       case MM_ANISOTROPIC:
 187           break;
 188
 189       default:
 190           return prevMode;
 191     }
 192     dc->w.MapMode = mode;
 193     DC_UpdateXforms( dc );
 194     return prevMode;
 195 }
 196
 197
 198 /***********************************************************************
 199  *           SetViewportExt    (GDI.14)
 200  */
 201 DWORD WINAPI SetViewportExt( HDC16 hdc, INT16 x, INT16 y )
 202 {
 203     SIZE32 size;
 204     if (!SetViewportExtEx32( hdc, x, y, &size )) return 0;
 205     return MAKELONG( size.cx, size.cy );
 206 }
 207
 208
 209 /***********************************************************************
 210  *           SetViewportExtEx16    (GDI.479)
 211  */
 212 BOOL16 WINAPI SetViewportExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 213 {
 214     SIZE32 size32;
 215     BOOL16 ret = SetViewportExtEx32( hdc, x, y, &size32 );
 216     if (size) CONV_SIZE32TO16( &size32, size );
 217     return ret;
 218 }
 219
 220
 221 /***********************************************************************
 222  *           SetViewportExtEx32    (GDI32.340)
 223  */
 224 BOOL32 WINAPI SetViewportExtEx32( HDC32 hdc, INT32 x, INT32 y, LPSIZE32 size )
 225 {
 226     DC * dc = DC_GetDCPtr( hdc );
 227     if (!dc) return FALSE;
 228     if (dc->funcs->pSetViewportExt)
 229         return dc->funcs->pSetViewportExt( dc, x, y );
 230     if (size)
 231     {
 232         size->cx = dc->vportExtX;
 233         size->cy = dc->vportExtY;
 234     }
 235     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 236         return TRUE;
 237     if (!x || !y) return FALSE;
 238     dc->vportExtX = x;
 239     dc->vportExtY = y;
 240     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 241     DC_UpdateXforms( dc );
 242     return TRUE;
 243 }
 244
 245
 246 /***********************************************************************
 247  *           SetViewportOrg    (GDI.13)
 248  */
 249 DWORD WINAPI SetViewportOrg( HDC16 hdc, INT16 x, INT16 y )
 250 {
 251     POINT32 pt;
 252     if (!SetViewportOrgEx32( hdc, x, y, &pt )) return 0;
 253     return MAKELONG( pt.x, pt.y );
 254 }
 255
 256
 257 /***********************************************************************
 258  *           SetViewportOrgEx16    (GDI.480)
 259  */
 260 BOOL16 WINAPI SetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 261 {
 262     POINT32 pt32;
 263     BOOL16 ret = SetViewportOrgEx32( hdc, x, y, &pt32 );
 264     if (pt) CONV_POINT32TO16( &pt32, pt );
 265     return ret;
 266 }
 267
 268
 269 /***********************************************************************
 270  *           SetViewportOrgEx32    (GDI32.341)
 271  */
 272 BOOL32 WINAPI SetViewportOrgEx32( HDC32 hdc, INT32 x, INT32 y, LPPOINT32 pt )
 273 {
 274     DC * dc = DC_GetDCPtr( hdc );
 275     if (!dc) return FALSE;
 276     if (dc->funcs->pSetViewportOrg)
 277         return dc->funcs->pSetViewportOrg( dc, x, y );
 278     if (pt)
 279     {
 280         pt->x = dc->vportOrgX;
 281         pt->y = dc->vportOrgY;
 282     }
 283     dc->vportOrgX = x;
 284     dc->vportOrgY = y;
 285     DC_UpdateXforms( dc );
 286     return TRUE;
 287 }
 288
 289
 290 /***********************************************************************
 291  *           SetWindowExt    (GDI.12)
 292  */
 293 DWORD WINAPI SetWindowExt( HDC16 hdc, INT16 x, INT16 y )
 294 {
 295     SIZE32 size;
 296     if (!SetWindowExtEx32( hdc, x, y, &size )) return 0;
 297     return MAKELONG( size.cx, size.cy );
 298 }
 299
 300
 301 /***********************************************************************
 302  *           SetWindowExtEx16    (GDI.481)
 303  */
 304 BOOL16 WINAPI SetWindowExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 305 {
 306     SIZE32 size32;
 307     BOOL16 ret = SetWindowExtEx32( hdc, x, y, &size32 );
 308     if (size) CONV_SIZE32TO16( &size32, size );
 309     return ret;
 310 }
 311
 312
 313 /***********************************************************************
 314  *           SetWindowExtEx32    (GDI32.344)
 315  */
 316 BOOL32 WINAPI SetWindowExtEx32( HDC32 hdc, INT32 x, INT32 y, LPSIZE32 size )
 317 {
 318     DC * dc = DC_GetDCPtr( hdc );
 319     if (!dc) return FALSE;
 320     if (dc->funcs->pSetWindowExt) return dc->funcs->pSetWindowExt( dc, x, y );
 321     if (size)
 322     {
 323         size->cx = dc->wndExtX;
 324         size->cy = dc->wndExtY;
 325     }
 326     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 327         return TRUE;
 328     if (!x || !y) return FALSE;
 329     dc->wndExtX = x;
 330     dc->wndExtY = y;
 331     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 332     DC_UpdateXforms( dc );
 333     return TRUE;
 334 }
 335
 336
 337 /***********************************************************************
 338  *           SetWindowOrg    (GDI.11)
 339  */
 340 DWORD WINAPI SetWindowOrg( HDC16 hdc, INT16 x, INT16 y )
 341 {
 342     POINT32 pt;
 343     if (!SetWindowOrgEx32( hdc, x, y, &pt )) return 0;
 344     return MAKELONG( pt.x, pt.y );
 345 }
 346
 347
 348 /***********************************************************************
 349  *           SetWindowOrgEx16    (GDI.482)
 350  */
 351 BOOL16 WINAPI SetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 352 {
 353     POINT32 pt32;
 354     BOOL16 ret = SetWindowOrgEx32( hdc, x, y, &pt32 );
 355     if (pt) CONV_POINT32TO16( &pt32, pt );
 356     return ret;
 357 }
 358
 359
 360 /***********************************************************************
 361  *           SetWindowOrgEx32    (GDI32.345)
 362  */
 363 BOOL32 WINAPI SetWindowOrgEx32( HDC32 hdc, INT32 x, INT32 y, LPPOINT32 pt )
 364 {
 365     DC * dc = DC_GetDCPtr( hdc );
 366     if (!dc) return FALSE;
 367     if (dc->funcs->pSetWindowOrg) return dc->funcs->pSetWindowOrg( dc, x, y );
 368     if (pt)
 369     {
 370         pt->x = dc->wndOrgX;
 371         pt->y = dc->wndOrgY;
 372     }
 373     dc->wndOrgX = x;
 374     dc->wndOrgY = y;
 375     DC_UpdateXforms( dc );
 376     return TRUE;
 377 }
 378
 379
 380 /***********************************************************************
 381  *           OffsetViewportOrg    (GDI.17)
 382  */
 383 DWORD WINAPI OffsetViewportOrg( HDC16 hdc, INT16 x, INT16 y )
 384 {
 385     POINT32 pt;
 386     if (!OffsetViewportOrgEx32( hdc, x, y, &pt )) return 0;
 387     return MAKELONG( pt.x, pt.y );
 388 }
 389
 390
 391 /***********************************************************************
 392  *           OffsetViewportOrgEx16    (GDI.476)
 393  */
 394 BOOL16 WINAPI OffsetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt)
 395 {
 396     POINT32 pt32;
 397     BOOL16 ret = OffsetViewportOrgEx32( hdc, x, y, &pt32 );
 398     if (pt) CONV_POINT32TO16( &pt32, pt );
 399     return ret;
 400 }
 401
 402
 403 /***********************************************************************
 404  *           OffsetViewportOrgEx32    (GDI32.257)
 405  */
 406 BOOL32 WINAPI OffsetViewportOrgEx32( HDC32 hdc, INT32 x, INT32 y, LPPOINT32 pt)
 407 {
 408     DC * dc = DC_GetDCPtr( hdc );
 409     if (!dc) return FALSE;
 410     if (dc->funcs->pOffsetViewportOrg)
 411         return dc->funcs->pOffsetViewportOrg( dc, x, y );
 412     if (pt)
 413     {
 414         pt->x = dc->vportOrgX;
 415         pt->y = dc->vportOrgY;
 416     }
 417     dc->vportOrgX += x;
 418     dc->vportOrgY += y;
 419     DC_UpdateXforms( dc );
 420     return TRUE;
 421 }
 422
 423
 424 /***********************************************************************
 425  *           OffsetWindowOrg    (GDI.15)
 426  */
 427 DWORD WINAPI OffsetWindowOrg( HDC16 hdc, INT16 x, INT16 y )
 428 {
 429     POINT32 pt;
 430     if (!OffsetWindowOrgEx32( hdc, x, y, &pt )) return 0;
 431     return MAKELONG( pt.x, pt.y );
 432 }
 433
 434
 435 /***********************************************************************
 436  *           OffsetWindowOrgEx16    (GDI.477)
 437  */
 438 BOOL16 WINAPI OffsetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 439 {
 440     POINT32 pt32;
 441     BOOL16 ret = OffsetWindowOrgEx32( hdc, x, y, &pt32 );
 442     if (pt) CONV_POINT32TO16( &pt32, pt );
 443     return ret;
 444 }
 445
 446
 447 /***********************************************************************
 448  *           OffsetWindowOrgEx32    (GDI32.258)
 449  */
 450 BOOL32 WINAPI OffsetWindowOrgEx32( HDC32 hdc, INT32 x, INT32 y, LPPOINT32 pt )
 451 {
 452     DC * dc = DC_GetDCPtr( hdc );
 453     if (!dc) return FALSE;
 454     if (dc->funcs->pOffsetWindowOrg)
 455         return dc->funcs->pOffsetWindowOrg( dc, x, y );
 456     if (pt)
 457     {
 458         pt->x = dc->wndOrgX;
 459         pt->y = dc->wndOrgY;
 460     }
 461     dc->wndOrgX += x;
 462     dc->wndOrgY += y;
 463     DC_UpdateXforms( dc );
 464     return TRUE;
 465 }
 466
 467
 468 /***********************************************************************
 469  *           ScaleViewportExt    (GDI.18)
 470  */
 471 DWORD WINAPI ScaleViewportExt( HDC16 hdc, INT16 xNum, INT16 xDenom,
 472                                INT16 yNum, INT16 yDenom )
 473 {
 474     SIZE32 size;
 475     if (!ScaleViewportExtEx32( hdc, xNum, xDenom, yNum, yDenom, &size ))
 476         return FALSE;
 477     return MAKELONG( size.cx,  size.cy );
 478 }
 479
 480
 481 /***********************************************************************
 482  *           ScaleViewportExtEx16    (GDI.484)
 483  */
 484 BOOL16 WINAPI ScaleViewportExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 485                                     INT16 yNum, INT16 yDenom, LPSIZE16 size )
 486 {
 487     SIZE32 size32;
 488     BOOL16 ret = ScaleViewportExtEx32( hdc, xNum, xDenom, yNum, yDenom,
 489                                        &size32 );
 490     if (size) CONV_SIZE32TO16( &size32, size );
 491     return ret;
 492 }
 493
 494
 495 /***********************************************************************
 496  *           ScaleViewportExtEx32    (GDI32.293)
 497  */
 498 BOOL32 WINAPI ScaleViewportExtEx32( HDC32 hdc, INT32 xNum, INT32 xDenom,
 499                                     INT32 yNum, INT32 yDenom, LPSIZE32 size )
 500 {
 501     DC * dc = DC_GetDCPtr( hdc );
 502     if (!dc) return FALSE;
 503     if (dc->funcs->pScaleViewportExt)
 504         return dc->funcs->pScaleViewportExt( dc, xNum, xDenom, yNum, yDenom );
 505     if (size)
 506     {
 507         size->cx = dc->vportExtX;
 508         size->cy = dc->vportExtY;
 509     }
 510     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 511         return TRUE;
 512     if (!xNum || !xDenom || !xNum || !yDenom) return FALSE;
 513     dc->vportExtX = (dc->vportExtX * xNum) / xDenom;
 514     dc->vportExtY = (dc->vportExtY * yNum) / yDenom;
 515     if (dc->vportExtX == 0) dc->vportExtX = 1;
 516     if (dc->vportExtY == 0) dc->vportExtY = 1;
 517     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 518     DC_UpdateXforms( dc );
 519     return TRUE;
 520 }
 521
 522
 523 /***********************************************************************
 524  *           ScaleWindowExt    (GDI.16)
 525  */
 526 DWORD WINAPI ScaleWindowExt( HDC16 hdc, INT16 xNum, INT16 xDenom,
 527                              INT16 yNum, INT16 yDenom )
 528 {
 529     SIZE32 size;
 530     if (!ScaleWindowExtEx32( hdc, xNum, xDenom, yNum, yDenom, &size ))
 531         return FALSE;
 532     return MAKELONG( size.cx,  size.cy );
 533 }
 534
 535
 536 /***********************************************************************
 537  *           ScaleWindowExtEx16    (GDI.485)
 538  */
 539 BOOL16 WINAPI ScaleWindowExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 540                                   INT16 yNum, INT16 yDenom, LPSIZE16 size )
 541 {
 542     SIZE32 size32;
 543     BOOL16 ret = ScaleWindowExtEx32( hdc, xNum, xDenom, yNum, yDenom,
 544                                      &size32 );
 545     if (size) CONV_SIZE32TO16( &size32, size );
 546     return ret;
 547 }
 548
 549
 550 /***********************************************************************
 551  *           ScaleWindowExtEx32    (GDI32.294)
 552  */
 553 BOOL32 WINAPI ScaleWindowExtEx32( HDC32 hdc, INT32 xNum, INT32 xDenom,
 554                                   INT32 yNum, INT32 yDenom, LPSIZE32 size )
 555 {
 556     DC * dc = DC_GetDCPtr( hdc );
 557     if (!dc) return FALSE;
 558     if (dc->funcs->pScaleWindowExt)
 559         return dc->funcs->pScaleWindowExt( dc, xNum, xDenom, yNum, yDenom );
 560     if (size)
 561     {
 562         size->cx = dc->wndExtX;
 563         size->cy = dc->wndExtY;
 564     }
 565     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 566         return TRUE;
 567     if (!xNum || !xDenom || !xNum || !yDenom) return FALSE;
 568     dc->wndExtX = (dc->wndExtX * xNum) / xDenom;
 569     dc->wndExtY = (dc->wndExtY * yNum) / yDenom;
 570     if (dc->wndExtX == 0) dc->wndExtX = 1;
 571     if (dc->wndExtY == 0) dc->wndExtY = 1;
 572     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 573     DC_UpdateXforms( dc );
 574     return TRUE;
 575 }