graphics/mapping.c

   1 /*
   2  * GDI mapping mode functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #include "dc.h"
   8 #include "debug.h"
   9
  10 DEFAULT_DEBUG_CHANNEL(gdi)
  11
  12
  13 /***********************************************************************
  14  *           MAPPING_FixIsotropic
  15  *
  16  * Fix viewport extensions for isotropic mode.
  17  */
  18 void MAPPING_FixIsotropic( DC * dc )
  19 {
  20     double xdim = (double)dc->vportExtX * dc->w.devCaps->horzSize /
  21                   (dc->w.devCaps->horzRes * dc->wndExtX);
  22     double ydim = (double)dc->vportExtY * dc->w.devCaps->vertSize /
  23                   (dc->w.devCaps->vertRes * dc->wndExtY);
  24     if (xdim > ydim)
  25     {
  26         dc->vportExtX = dc->vportExtX * fabs( ydim / xdim );
  27         if (!dc->vportExtX) dc->vportExtX = 1;
  28     }
  29     else
  30     {
  31         dc->vportExtY = dc->vportExtY * fabs( xdim / ydim );
  32         if (!dc->vportExtY) dc->vportExtY = 1;
  33     }
  34 }
  35
  36
  37 /***********************************************************************
  38  *           DPtoLP16    (GDI.67)
  39  */
  40 BOOL16 WINAPI DPtoLP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  41 {
  42     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  43     if (!dc) return FALSE;
  44
  45     while (count--)
  46     {
  47         points->x = XDPTOLP( dc, points->x );
  48         points->y = YDPTOLP( dc, points->y );
  49         points++;
  50     }
  51     return TRUE;
  52 }
  53
  54
  55 /***********************************************************************
  56  *           DPtoLP32    (GDI32.65)
  57  */
  58 BOOL WINAPI DPtoLP( HDC hdc, LPPOINT points, INT count )
  59 {
  60     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  61     if (!dc) return FALSE;
  62
  63     while (count--)
  64     {
  65         if (!INTERNAL_DPTOLP( dc, points ))
  66             return FALSE;
  67         points++;
  68     }
  69     return TRUE;
  70 }
  71
  72
  73 /***********************************************************************
  74  *           LPtoDP16    (GDI.99)
  75  */
  76 BOOL16 WINAPI LPtoDP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  77 {
  78     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  79     if (!dc) return FALSE;
  80
  81     while (count--)
  82     {
  83         points->x = XLPTODP( dc, points->x );
  84         points->y = YLPTODP( dc, points->y );
  85         points++;
  86     }
  87     return TRUE;
  88 }
  89
  90
  91 /***********************************************************************
  92  *           LPtoDP32    (GDI32.247)
  93  */
  94 BOOL WINAPI LPtoDP( HDC hdc, LPPOINT points, INT count )
  95 {
  96     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  97     if (!dc) return FALSE;
  98
  99     while (count--)
 100     {
 101         INTERNAL_LPTODP( dc, points );
 102         points++;
 103     }
 104     return TRUE;
 105 }
 106
 107
 108 /***********************************************************************
 109  *           SetMapMode16    (GDI.3)
 110  */
 111 INT16 WINAPI SetMapMode16( HDC16 hdc, INT16 mode )
 112 {
 113     return SetMapMode( hdc, mode );
 114 }
 115
 116
 117 /***********************************************************************
 118  *           SetMapMode32    (GDI32.321)
 119  */
 120 INT WINAPI SetMapMode( HDC hdc, INT mode )
 121 {
 122     INT prevMode;
 123     DC * dc = DC_GetDCPtr( hdc );
 124     if (!dc) return 0;
 125     if (dc->funcs->pSetMapMode) return dc->funcs->pSetMapMode( dc, mode );
 126
 127     TRACE(gdi, "%04x %d\n", hdc, mode );
 128
 129     prevMode = dc->w.MapMode;
 130     switch(mode)
 131     {
 132       case MM_TEXT:
 133           dc->wndExtX   = 1;
 134           dc->wndExtY   = 1;
 135           dc->vportExtX = 1;
 136           dc->vportExtY = 1;
 137           break;
 138
 139       case MM_LOMETRIC:
 140       case MM_ISOTROPIC:
 141           dc->wndExtX   = dc->w.devCaps->horzSize;
 142           dc->wndExtY   = dc->w.devCaps->vertSize;
 143           dc->vportExtX = dc->w.devCaps->horzRes / 10;
 144           dc->vportExtY = dc->w.devCaps->vertRes / -10;
 145           break;
 146
 147       case MM_HIMETRIC:
 148           dc->wndExtX   = dc->w.devCaps->horzSize * 10;
 149           dc->wndExtY   = dc->w.devCaps->vertSize * 10;
 150           dc->vportExtX = dc->w.devCaps->horzRes / 10;
 151           dc->vportExtY = dc->w.devCaps->vertRes / -10;
 152           break;
 153
 154       case MM_LOENGLISH:
 155           dc->wndExtX   = dc->w.devCaps->horzSize;
 156           dc->wndExtY   = dc->w.devCaps->vertSize;
 157           dc->vportExtX = 254L * dc->w.devCaps->horzRes / 1000;
 158           dc->vportExtY = -254L * dc->w.devCaps->vertRes / 1000;
 159           break;
 160
 161       case MM_HIENGLISH:
 162           dc->wndExtX   = dc->w.devCaps->horzSize * 10;
 163           dc->wndExtY   = dc->w.devCaps->vertSize * 10;
 164           dc->vportExtX = 254L * dc->w.devCaps->horzRes / 1000;
 165           dc->vportExtY = -254L * dc->w.devCaps->vertRes / 1000;
 166           break;
 167
 168       case MM_TWIPS:
 169           dc->wndExtX   = 144L * dc->w.devCaps->horzSize / 10;
 170           dc->wndExtY   = 144L * dc->w.devCaps->vertSize / 10;
 171           dc->vportExtX = 254L * dc->w.devCaps->horzRes / 1000;
 172           dc->vportExtY = -254L * dc->w.devCaps->vertRes / 1000;
 173           break;
 174
 175       case MM_ANISOTROPIC:
 176           break;
 177
 178       default:
 179           return prevMode;
 180     }
 181     dc->w.MapMode = mode;
 182     DC_UpdateXforms( dc );
 183     return prevMode;
 184 }
 185
 186
 187 /***********************************************************************
 188  *           SetViewportExt    (GDI.14)
 189  */
 190 DWORD WINAPI SetViewportExt16( HDC16 hdc, INT16 x, INT16 y )
 191 {
 192     SIZE size;
 193     if (!SetViewportExtEx( hdc, x, y, &size )) return 0;
 194     return MAKELONG( size.cx, size.cy );
 195 }
 196
 197
 198 /***********************************************************************
 199  *           SetViewportExtEx16    (GDI.479)
 200  */
 201 BOOL16 WINAPI SetViewportExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 202 {
 203     SIZE size32;
 204     BOOL16 ret = SetViewportExtEx( hdc, x, y, &size32 );
 205     if (size) CONV_SIZE32TO16( &size32, size );
 206     return ret;
 207 }
 208
 209
 210 /***********************************************************************
 211  *           SetViewportExtEx32    (GDI32.340)
 212  */
 213 BOOL WINAPI SetViewportExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 214 {
 215     DC * dc = DC_GetDCPtr( hdc );
 216     if (!dc) return FALSE;
 217     if (dc->funcs->pSetViewportExt)
 218         return dc->funcs->pSetViewportExt( dc, x, y );
 219     if (size)
 220     {
 221         size->cx = dc->vportExtX;
 222         size->cy = dc->vportExtY;
 223     }
 224     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 225         return TRUE;
 226     if (!x || !y) return FALSE;
 227     dc->vportExtX = x;
 228     dc->vportExtY = y;
 229     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 230     DC_UpdateXforms( dc );
 231     return TRUE;
 232 }
 233
 234
 235 /***********************************************************************
 236  *           SetViewportOrg    (GDI.13)
 237  */
 238 DWORD WINAPI SetViewportOrg16( HDC16 hdc, INT16 x, INT16 y )
 239 {
 240     POINT pt;
 241     if (!SetViewportOrgEx( hdc, x, y, &pt )) return 0;
 242     return MAKELONG( pt.x, pt.y );
 243 }
 244
 245
 246 /***********************************************************************
 247  *           SetViewportOrgEx16    (GDI.480)
 248  */
 249 BOOL16 WINAPI SetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 250 {
 251     POINT pt32;
 252     BOOL16 ret = SetViewportOrgEx( hdc, x, y, &pt32 );
 253     if (pt) CONV_POINT32TO16( &pt32, pt );
 254     return ret;
 255 }
 256
 257
 258 /***********************************************************************
 259  *           SetViewportOrgEx32    (GDI32.341)
 260  */
 261 BOOL WINAPI SetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 262 {
 263     DC * dc = DC_GetDCPtr( hdc );
 264     if (!dc) return FALSE;
 265     if (dc->funcs->pSetViewportOrg)
 266         return dc->funcs->pSetViewportOrg( dc, x, y );
 267     if (pt)
 268     {
 269         pt->x = dc->vportOrgX;
 270         pt->y = dc->vportOrgY;
 271     }
 272     dc->vportOrgX = x;
 273     dc->vportOrgY = y;
 274     DC_UpdateXforms( dc );
 275     return TRUE;
 276 }
 277
 278
 279 /***********************************************************************
 280  *           SetWindowExt    (GDI.12)
 281  */
 282 DWORD WINAPI SetWindowExt16( HDC16 hdc, INT16 x, INT16 y )
 283 {
 284     SIZE size;
 285     if (!SetWindowExtEx( hdc, x, y, &size )) return 0;
 286     return MAKELONG( size.cx, size.cy );
 287 }
 288
 289
 290 /***********************************************************************
 291  *           SetWindowExtEx16    (GDI.481)
 292  */
 293 BOOL16 WINAPI SetWindowExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 294 {
 295     SIZE size32;
 296     BOOL16 ret = SetWindowExtEx( hdc, x, y, &size32 );
 297     if (size) CONV_SIZE32TO16( &size32, size );
 298     return ret;
 299 }
 300
 301
 302 /***********************************************************************
 303  *           SetWindowExtEx32    (GDI32.344)
 304  */
 305 BOOL WINAPI SetWindowExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 306 {
 307     DC * dc = DC_GetDCPtr( hdc );
 308     if (!dc) return FALSE;
 309     if (dc->funcs->pSetWindowExt) return dc->funcs->pSetWindowExt( dc, x, y );
 310     if (size)
 311     {
 312         size->cx = dc->wndExtX;
 313         size->cy = dc->wndExtY;
 314     }
 315     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 316         return TRUE;
 317     if (!x || !y) return FALSE;
 318     dc->wndExtX = x;
 319     dc->wndExtY = y;
 320     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 321     DC_UpdateXforms( dc );
 322     return TRUE;
 323 }
 324
 325
 326 /***********************************************************************
 327  *           SetWindowOrg    (GDI.11)
 328  */
 329 DWORD WINAPI SetWindowOrg16( HDC16 hdc, INT16 x, INT16 y )
 330 {
 331     POINT pt;
 332     if (!SetWindowOrgEx( hdc, x, y, &pt )) return 0;
 333     return MAKELONG( pt.x, pt.y );
 334 }
 335
 336
 337 /***********************************************************************
 338  *           SetWindowOrgEx16    (GDI.482)
 339  */
 340 BOOL16 WINAPI SetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 341 {
 342     POINT pt32;
 343     BOOL16 ret = SetWindowOrgEx( hdc, x, y, &pt32 );
 344     if (pt) CONV_POINT32TO16( &pt32, pt );
 345     return ret;
 346 }
 347
 348
 349 /***********************************************************************
 350  *           SetWindowOrgEx32    (GDI32.345)
 351  */
 352 BOOL WINAPI SetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 353 {
 354     DC * dc = DC_GetDCPtr( hdc );
 355     if (!dc) return FALSE;
 356     if (dc->funcs->pSetWindowOrg) return dc->funcs->pSetWindowOrg( dc, x, y );
 357     if (pt)
 358     {
 359         pt->x = dc->wndOrgX;
 360         pt->y = dc->wndOrgY;
 361     }
 362     dc->wndOrgX = x;
 363     dc->wndOrgY = y;
 364     DC_UpdateXforms( dc );
 365     return TRUE;
 366 }
 367
 368
 369 /***********************************************************************
 370  *           OffsetViewportOrg    (GDI.17)
 371  */
 372 DWORD WINAPI OffsetViewportOrg16( HDC16 hdc, INT16 x, INT16 y )
 373 {
 374     POINT pt;
 375     if (!OffsetViewportOrgEx( hdc, x, y, &pt )) return 0;
 376     return MAKELONG( pt.x, pt.y );
 377 }
 378
 379
 380 /***********************************************************************
 381  *           OffsetViewportOrgEx16    (GDI.476)
 382  */
 383 BOOL16 WINAPI OffsetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt)
 384 {
 385     POINT pt32;
 386     BOOL16 ret = OffsetViewportOrgEx( hdc, x, y, &pt32 );
 387     if (pt) CONV_POINT32TO16( &pt32, pt );
 388     return ret;
 389 }
 390
 391
 392 /***********************************************************************
 393  *           OffsetViewportOrgEx32    (GDI32.257)
 394  */
 395 BOOL WINAPI OffsetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt)
 396 {
 397     DC * dc = DC_GetDCPtr( hdc );
 398     if (!dc) return FALSE;
 399     if (dc->funcs->pOffsetViewportOrg)
 400         return dc->funcs->pOffsetViewportOrg( dc, x, y );
 401     if (pt)
 402     {
 403         pt->x = dc->vportOrgX;
 404         pt->y = dc->vportOrgY;
 405     }
 406     dc->vportOrgX += x;
 407     dc->vportOrgY += y;
 408     DC_UpdateXforms( dc );
 409     return TRUE;
 410 }
 411
 412
 413 /***********************************************************************
 414  *           OffsetWindowOrg    (GDI.15)
 415  */
 416 DWORD WINAPI OffsetWindowOrg16( HDC16 hdc, INT16 x, INT16 y )
 417 {
 418     POINT pt;
 419     if (!OffsetWindowOrgEx( hdc, x, y, &pt )) return 0;
 420     return MAKELONG( pt.x, pt.y );
 421 }
 422
 423
 424 /***********************************************************************
 425  *           OffsetWindowOrgEx16    (GDI.477)
 426  */
 427 BOOL16 WINAPI OffsetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 428 {
 429     POINT pt32;
 430     BOOL16 ret = OffsetWindowOrgEx( hdc, x, y, &pt32 );
 431     if (pt) CONV_POINT32TO16( &pt32, pt );
 432     return ret;
 433 }
 434
 435
 436 /***********************************************************************
 437  *           OffsetWindowOrgEx32    (GDI32.258)
 438  */
 439 BOOL WINAPI OffsetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 440 {
 441     DC * dc = DC_GetDCPtr( hdc );
 442     if (!dc) return FALSE;
 443     if (dc->funcs->pOffsetWindowOrg)
 444         return dc->funcs->pOffsetWindowOrg( dc, x, y );
 445     if (pt)
 446     {
 447         pt->x = dc->wndOrgX;
 448         pt->y = dc->wndOrgY;
 449     }
 450     dc->wndOrgX += x;
 451     dc->wndOrgY += y;
 452     DC_UpdateXforms( dc );
 453     return TRUE;
 454 }
 455
 456
 457 /***********************************************************************
 458  *           ScaleViewportExt    (GDI.18)
 459  */
 460 DWORD WINAPI ScaleViewportExt16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 461                                INT16 yNum, INT16 yDenom )
 462 {
 463     SIZE size;
 464     if (!ScaleViewportExtEx( hdc, xNum, xDenom, yNum, yDenom, &size ))
 465         return FALSE;
 466     return MAKELONG( size.cx,  size.cy );
 467 }
 468
 469
 470 /***********************************************************************
 471  *           ScaleViewportExtEx16    (GDI.484)
 472  */
 473 BOOL16 WINAPI ScaleViewportExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 474                                     INT16 yNum, INT16 yDenom, LPSIZE16 size )
 475 {
 476     SIZE size32;
 477     BOOL16 ret = ScaleViewportExtEx( hdc, xNum, xDenom, yNum, yDenom,
 478                                        &size32 );
 479     if (size) CONV_SIZE32TO16( &size32, size );
 480     return ret;
 481 }
 482
 483
 484 /***********************************************************************
 485  *           ScaleViewportExtEx32    (GDI32.293)
 486  */
 487 BOOL WINAPI ScaleViewportExtEx( HDC hdc, INT xNum, INT xDenom,
 488                                     INT yNum, INT yDenom, LPSIZE size )
 489 {
 490     DC * dc = DC_GetDCPtr( hdc );
 491     if (!dc) return FALSE;
 492     if (dc->funcs->pScaleViewportExt)
 493         return dc->funcs->pScaleViewportExt( dc, xNum, xDenom, yNum, yDenom );
 494     if (size)
 495     {
 496         size->cx = dc->vportExtX;
 497         size->cy = dc->vportExtY;
 498     }
 499     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 500         return TRUE;
 501     if (!xNum || !xDenom || !xNum || !yDenom) return FALSE;
 502     dc->vportExtX = (dc->vportExtX * xNum) / xDenom;
 503     dc->vportExtY = (dc->vportExtY * yNum) / yDenom;
 504     if (dc->vportExtX == 0) dc->vportExtX = 1;
 505     if (dc->vportExtY == 0) dc->vportExtY = 1;
 506     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 507     DC_UpdateXforms( dc );
 508     return TRUE;
 509 }
 510
 511
 512 /***********************************************************************
 513  *           ScaleWindowExt    (GDI.16)
 514  */
 515 DWORD WINAPI ScaleWindowExt16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 516                              INT16 yNum, INT16 yDenom )
 517 {
 518     SIZE size;
 519     if (!ScaleWindowExtEx( hdc, xNum, xDenom, yNum, yDenom, &size ))
 520         return FALSE;
 521     return MAKELONG( size.cx,  size.cy );
 522 }
 523
 524
 525 /***********************************************************************
 526  *           ScaleWindowExtEx16    (GDI.485)
 527  */
 528 BOOL16 WINAPI ScaleWindowExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 529                                   INT16 yNum, INT16 yDenom, LPSIZE16 size )
 530 {
 531     SIZE size32;
 532     BOOL16 ret = ScaleWindowExtEx( hdc, xNum, xDenom, yNum, yDenom,
 533                                      &size32 );
 534     if (size) CONV_SIZE32TO16( &size32, size );
 535     return ret;
 536 }
 537
 538
 539 /***********************************************************************
 540  *           ScaleWindowExtEx32    (GDI32.294)
 541  */
 542 BOOL WINAPI ScaleWindowExtEx( HDC hdc, INT xNum, INT xDenom,
 543                                   INT yNum, INT yDenom, LPSIZE size )
 544 {
 545     DC * dc = DC_GetDCPtr( hdc );
 546     if (!dc) return FALSE;
 547     if (dc->funcs->pScaleWindowExt)
 548         return dc->funcs->pScaleWindowExt( dc, xNum, xDenom, yNum, yDenom );
 549     if (size)
 550     {
 551         size->cx = dc->wndExtX;
 552         size->cy = dc->wndExtY;
 553     }
 554     if ((dc->w.MapMode != MM_ISOTROPIC) && (dc->w.MapMode != MM_ANISOTROPIC))
 555         return TRUE;
 556     if (!xNum || !xDenom || !xNum || !yDenom) return FALSE;
 557     dc->wndExtX = (dc->wndExtX * xNum) / xDenom;
 558     dc->wndExtY = (dc->wndExtY * yNum) / yDenom;
 559     if (dc->wndExtX == 0) dc->wndExtX = 1;
 560     if (dc->wndExtY == 0) dc->wndExtY = 1;
 561     if (dc->w.MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 562     DC_UpdateXforms( dc );
 563     return TRUE;
 564 }