graphics/mapping.c

   1 /*
   2  * GDI mapping mode functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #include "gdi.h"
   8 #include "debugtools.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->devCaps->horzSize /
  21                   (dc->devCaps->horzRes * dc->wndExtX);
  22     double ydim = (double)dc->vportExtY * dc->devCaps->vertSize /
  23                   (dc->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     GDI_ReleaseObj( hdc );
  52     return TRUE;
  53 }
  54
  55
  56 /***********************************************************************
  57  *           DPtoLP    (GDI32.65)
  58  */
  59 BOOL WINAPI DPtoLP( HDC hdc, LPPOINT points, INT count )
  60 {
  61     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  62     if (!dc) return FALSE;
  63
  64     while (count--)
  65     {
  66         if (!INTERNAL_DPTOLP( dc, points ))
  67             break;
  68         points++;
  69     }
  70     GDI_ReleaseObj( hdc );
  71     return (count < 0);
  72 }
  73
  74
  75 /***********************************************************************
  76  *           LPtoDP16    (GDI.99)
  77  */
  78 BOOL16 WINAPI LPtoDP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  79 {
  80     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  81     if (!dc) return FALSE;
  82
  83     while (count--)
  84     {
  85         points->x = XLPTODP( dc, points->x );
  86         points->y = YLPTODP( dc, points->y );
  87         points++;
  88     }
  89     GDI_ReleaseObj( hdc );
  90     return TRUE;
  91 }
  92
  93
  94 /***********************************************************************
  95  *           LPtoDP    (GDI32.247)
  96  */
  97 BOOL WINAPI LPtoDP( HDC hdc, LPPOINT points, INT count )
  98 {
  99     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 100     if (!dc) return FALSE;
 101
 102     while (count--)
 103     {
 104         INTERNAL_LPTODP( dc, points );
 105         points++;
 106     }
 107     GDI_ReleaseObj( hdc );
 108     return TRUE;
 109 }
 110
 111
 112 /***********************************************************************
 113  *           SetMapMode16    (GDI.3)
 114  */
 115 INT16 WINAPI SetMapMode16( HDC16 hdc, INT16 mode )
 116 {
 117     return SetMapMode( hdc, mode );
 118 }
 119
 120
 121 /***********************************************************************
 122  *           SetMapMode    (GDI32.321)
 123  */
 124 INT WINAPI SetMapMode( HDC hdc, INT mode )
 125 {
 126     INT prevMode;
 127     DC * dc = DC_GetDCPtr( hdc );
 128     if (!dc) return 0;
 129     if (dc->funcs->pSetMapMode)
 130     {
 131         prevMode = dc->funcs->pSetMapMode( dc, mode );
 132         goto done;
 133     }
 134
 135     TRACE("%04x %d\n", hdc, mode );
 136
 137     prevMode = dc->MapMode;
 138     switch(mode)
 139     {
 140       case MM_TEXT:
 141           dc->wndExtX   = 1;
 142           dc->wndExtY   = 1;
 143           dc->vportExtX = 1;
 144           dc->vportExtY = 1;
 145           break;
 146
 147       case MM_LOMETRIC:
 148       case MM_ISOTROPIC:
 149           dc->wndExtX   = dc->devCaps->horzSize;
 150           dc->wndExtY   = dc->devCaps->vertSize;
 151           dc->vportExtX = dc->devCaps->horzRes / 10;
 152           dc->vportExtY = dc->devCaps->vertRes / -10;
 153           break;
 154
 155       case MM_HIMETRIC:
 156           dc->wndExtX   = dc->devCaps->horzSize * 10;
 157           dc->wndExtY   = dc->devCaps->vertSize * 10;
 158           dc->vportExtX = dc->devCaps->horzRes / 10;
 159           dc->vportExtY = dc->devCaps->vertRes / -10;
 160           break;
 161
 162       case MM_LOENGLISH:
 163           dc->wndExtX   = dc->devCaps->horzSize;
 164           dc->wndExtY   = dc->devCaps->vertSize;
 165           dc->vportExtX = 254L * dc->devCaps->horzRes / 1000;
 166           dc->vportExtY = -254L * dc->devCaps->vertRes / 1000;
 167           break;
 168
 169       case MM_HIENGLISH:
 170           dc->wndExtX   = dc->devCaps->horzSize * 10;
 171           dc->wndExtY   = dc->devCaps->vertSize * 10;
 172           dc->vportExtX = 254L * dc->devCaps->horzRes / 1000;
 173           dc->vportExtY = -254L * dc->devCaps->vertRes / 1000;
 174           break;
 175
 176       case MM_TWIPS:
 177           dc->wndExtX   = 144L * dc->devCaps->horzSize / 10;
 178           dc->wndExtY   = 144L * dc->devCaps->vertSize / 10;
 179           dc->vportExtX = 254L * dc->devCaps->horzRes / 1000;
 180           dc->vportExtY = -254L * dc->devCaps->vertRes / 1000;
 181           break;
 182
 183       case MM_ANISOTROPIC:
 184           break;
 185
 186       default:
 187           goto done;
 188     }
 189     dc->MapMode = mode;
 190     DC_UpdateXforms( dc );
 191  done:
 192     GDI_ReleaseObj( hdc );
 193     return prevMode;
 194 }
 195
 196
 197 /***********************************************************************
 198  *           SetViewportExt    (GDI.14)
 199  */
 200 DWORD WINAPI SetViewportExt16( HDC16 hdc, INT16 x, INT16 y )
 201 {
 202     SIZE size;
 203     if (!SetViewportExtEx( hdc, x, y, &size )) return 0;
 204     return MAKELONG( size.cx, size.cy );
 205 }
 206
 207
 208 /***********************************************************************
 209  *           SetViewportExtEx16    (GDI.479)
 210  */
 211 BOOL16 WINAPI SetViewportExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 212 {
 213     SIZE size32;
 214     BOOL16 ret = SetViewportExtEx( hdc, x, y, &size32 );
 215     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 216     return ret;
 217 }
 218
 219
 220 /***********************************************************************
 221  *           SetViewportExtEx    (GDI32.340)
 222  */
 223 BOOL WINAPI SetViewportExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 224 {
 225     BOOL ret = TRUE;
 226     DC * dc = DC_GetDCPtr( hdc );
 227     if (!dc) return FALSE;
 228     if (dc->funcs->pSetViewportExt)
 229     {
 230         ret = dc->funcs->pSetViewportExt( dc, x, y );
 231         goto done;
 232     }
 233     if (size)
 234     {
 235         size->cx = dc->vportExtX;
 236         size->cy = dc->vportExtY;
 237     }
 238     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 239         goto done;
 240     if (!x || !y)
 241     {
 242         ret = FALSE;
 243         goto done;
 244     }
 245     dc->vportExtX = x;
 246     dc->vportExtY = y;
 247     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 248     DC_UpdateXforms( dc );
 249  done:
 250     GDI_ReleaseObj( hdc );
 251     return ret;
 252 }
 253
 254
 255 /***********************************************************************
 256  *           SetViewportOrg    (GDI.13)
 257  */
 258 DWORD WINAPI SetViewportOrg16( HDC16 hdc, INT16 x, INT16 y )
 259 {
 260     POINT pt;
 261     if (!SetViewportOrgEx( hdc, x, y, &pt )) return 0;
 262     return MAKELONG( pt.x, pt.y );
 263 }
 264
 265
 266 /***********************************************************************
 267  *           SetViewportOrgEx16    (GDI.480)
 268  */
 269 BOOL16 WINAPI SetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 270 {
 271     POINT pt32;
 272     BOOL16 ret = SetViewportOrgEx( hdc, x, y, &pt32 );
 273     if (pt) CONV_POINT32TO16( &pt32, pt );
 274     return ret;
 275 }
 276
 277
 278 /***********************************************************************
 279  *           SetViewportOrgEx    (GDI32.341)
 280  */
 281 BOOL WINAPI SetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 282 {
 283     BOOL ret = TRUE;
 284     DC * dc = DC_GetDCPtr( hdc );
 285     if (!dc) return FALSE;
 286     if (dc->funcs->pSetViewportOrg)
 287         ret = dc->funcs->pSetViewportOrg( dc, x, y );
 288     else
 289     {
 290         if (pt)
 291         {
 292             pt->x = dc->vportOrgX;
 293             pt->y = dc->vportOrgY;
 294         }
 295         dc->vportOrgX = x;
 296         dc->vportOrgY = y;
 297         DC_UpdateXforms( dc );
 298     }
 299     GDI_ReleaseObj( hdc );
 300     return ret;
 301 }
 302
 303
 304 /***********************************************************************
 305  *           SetWindowExt    (GDI.12)
 306  */
 307 DWORD WINAPI SetWindowExt16( HDC16 hdc, INT16 x, INT16 y )
 308 {
 309     SIZE size;
 310     if (!SetWindowExtEx( hdc, x, y, &size )) return 0;
 311     return MAKELONG( size.cx, size.cy );
 312 }
 313
 314
 315 /***********************************************************************
 316  *           SetWindowExtEx16    (GDI.481)
 317  */
 318 BOOL16 WINAPI SetWindowExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 319 {
 320     SIZE size32;
 321     BOOL16 ret = SetWindowExtEx( hdc, x, y, &size32 );
 322     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 323     return ret;
 324 }
 325
 326
 327 /***********************************************************************
 328  *           SetWindowExtEx    (GDI32.344)
 329  */
 330 BOOL WINAPI SetWindowExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 331 {
 332     BOOL ret = TRUE;
 333     DC * dc = DC_GetDCPtr( hdc );
 334     if (!dc) return FALSE;
 335     if (dc->funcs->pSetWindowExt)
 336     {
 337         ret = dc->funcs->pSetWindowExt( dc, x, y );
 338         goto done;
 339     }
 340     if (size)
 341     {
 342         size->cx = dc->wndExtX;
 343         size->cy = dc->wndExtY;
 344     }
 345     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 346         goto done;
 347     if (!x || !y)
 348     {
 349         ret = FALSE;
 350         goto done;
 351     }
 352     dc->wndExtX = x;
 353     dc->wndExtY = y;
 354     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 355     DC_UpdateXforms( dc );
 356  done:
 357     GDI_ReleaseObj( hdc );
 358     return ret;
 359 }
 360
 361
 362 /***********************************************************************
 363  *           SetWindowOrg    (GDI.11)
 364  */
 365 DWORD WINAPI SetWindowOrg16( HDC16 hdc, INT16 x, INT16 y )
 366 {
 367     POINT pt;
 368     if (!SetWindowOrgEx( hdc, x, y, &pt )) return 0;
 369     return MAKELONG( pt.x, pt.y );
 370 }
 371
 372
 373 /***********************************************************************
 374  *           SetWindowOrgEx16    (GDI.482)
 375  */
 376 BOOL16 WINAPI SetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 377 {
 378     POINT pt32;
 379     BOOL16 ret = SetWindowOrgEx( hdc, x, y, &pt32 );
 380     if (pt) CONV_POINT32TO16( &pt32, pt );
 381     return ret;
 382 }
 383
 384
 385 /***********************************************************************
 386  *           SetWindowOrgEx    (GDI32.345)
 387  */
 388 BOOL WINAPI SetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 389 {
 390     BOOL ret = TRUE;
 391     DC * dc = DC_GetDCPtr( hdc );
 392     if (!dc) return FALSE;
 393     if (dc->funcs->pSetWindowOrg) ret = dc->funcs->pSetWindowOrg( dc, x, y );
 394     else
 395     {
 396         if (pt)
 397         {
 398             pt->x = dc->wndOrgX;
 399             pt->y = dc->wndOrgY;
 400         }
 401         dc->wndOrgX = x;
 402         dc->wndOrgY = y;
 403         DC_UpdateXforms( dc );
 404     }
 405     GDI_ReleaseObj( hdc );
 406     return ret;
 407 }
 408
 409
 410 /***********************************************************************
 411  *           OffsetViewportOrg    (GDI.17)
 412  */
 413 DWORD WINAPI OffsetViewportOrg16( HDC16 hdc, INT16 x, INT16 y )
 414 {
 415     POINT pt;
 416     if (!OffsetViewportOrgEx( hdc, x, y, &pt )) return 0;
 417     return MAKELONG( pt.x, pt.y );
 418 }
 419
 420
 421 /***********************************************************************
 422  *           OffsetViewportOrgEx16    (GDI.476)
 423  */
 424 BOOL16 WINAPI OffsetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt)
 425 {
 426     POINT pt32;
 427     BOOL16 ret = OffsetViewportOrgEx( hdc, x, y, &pt32 );
 428     if (pt) CONV_POINT32TO16( &pt32, pt );
 429     return ret;
 430 }
 431
 432
 433 /***********************************************************************
 434  *           OffsetViewportOrgEx    (GDI32.257)
 435  */
 436 BOOL WINAPI OffsetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt)
 437 {
 438     BOOL ret = TRUE;
 439     DC * dc = DC_GetDCPtr( hdc );
 440     if (!dc) return FALSE;
 441     if (dc->funcs->pOffsetViewportOrg)
 442         ret = dc->funcs->pOffsetViewportOrg( dc, x, y );
 443     else
 444     {
 445         if (pt)
 446         {
 447             pt->x = dc->vportOrgX;
 448             pt->y = dc->vportOrgY;
 449         }
 450         dc->vportOrgX += x;
 451         dc->vportOrgY += y;
 452         DC_UpdateXforms( dc );
 453     }
 454     GDI_ReleaseObj( hdc );
 455     return ret;
 456 }
 457
 458
 459 /***********************************************************************
 460  *           OffsetWindowOrg    (GDI.15)
 461  */
 462 DWORD WINAPI OffsetWindowOrg16( HDC16 hdc, INT16 x, INT16 y )
 463 {
 464     POINT pt;
 465     if (!OffsetWindowOrgEx( hdc, x, y, &pt )) return 0;
 466     return MAKELONG( pt.x, pt.y );
 467 }
 468
 469
 470 /***********************************************************************
 471  *           OffsetWindowOrgEx16    (GDI.477)
 472  */
 473 BOOL16 WINAPI OffsetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 474 {
 475     POINT pt32;
 476     BOOL16 ret = OffsetWindowOrgEx( hdc, x, y, &pt32 );
 477     if (pt) CONV_POINT32TO16( &pt32, pt );
 478     return ret;
 479 }
 480
 481
 482 /***********************************************************************
 483  *           OffsetWindowOrgEx    (GDI32.258)
 484  */
 485 BOOL WINAPI OffsetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 486 {
 487     BOOL ret = TRUE;
 488     DC * dc = DC_GetDCPtr( hdc );
 489     if (!dc) return FALSE;
 490     if (dc->funcs->pOffsetWindowOrg)
 491         ret = dc->funcs->pOffsetWindowOrg( dc, x, y );
 492     else
 493     {
 494         if (pt)
 495         {
 496             pt->x = dc->wndOrgX;
 497             pt->y = dc->wndOrgY;
 498         }
 499         dc->wndOrgX += x;
 500         dc->wndOrgY += y;
 501         DC_UpdateXforms( dc );
 502     }
 503     GDI_ReleaseObj( hdc );
 504     return ret;
 505 }
 506
 507
 508 /***********************************************************************
 509  *           ScaleViewportExt    (GDI.18)
 510  */
 511 DWORD WINAPI ScaleViewportExt16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 512                                INT16 yNum, INT16 yDenom )
 513 {
 514     SIZE size;
 515     if (!ScaleViewportExtEx( hdc, xNum, xDenom, yNum, yDenom, &size ))
 516         return FALSE;
 517     return MAKELONG( size.cx,  size.cy );
 518 }
 519
 520
 521 /***********************************************************************
 522  *           ScaleViewportExtEx16    (GDI.484)
 523  */
 524 BOOL16 WINAPI ScaleViewportExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 525                                     INT16 yNum, INT16 yDenom, LPSIZE16 size )
 526 {
 527     SIZE size32;
 528     BOOL16 ret = ScaleViewportExtEx( hdc, xNum, xDenom, yNum, yDenom,
 529                                        &size32 );
 530     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 531     return ret;
 532 }
 533
 534
 535 /***********************************************************************
 536  *           ScaleViewportExtEx    (GDI32.293)
 537  */
 538 BOOL WINAPI ScaleViewportExtEx( HDC hdc, INT xNum, INT xDenom,
 539                                     INT yNum, INT yDenom, LPSIZE size )
 540 {
 541     BOOL ret = TRUE;
 542     DC * dc = DC_GetDCPtr( hdc );
 543     if (!dc) return FALSE;
 544     if (dc->funcs->pScaleViewportExt)
 545     {
 546         ret = dc->funcs->pScaleViewportExt( dc, xNum, xDenom, yNum, yDenom );
 547         goto done;
 548     }
 549     if (size)
 550     {
 551         size->cx = dc->vportExtX;
 552         size->cy = dc->vportExtY;
 553     }
 554     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 555         goto done;
 556     if (!xNum || !xDenom || !xNum || !yDenom)
 557     {
 558         ret = FALSE;
 559         goto done;
 560     }
 561     dc->vportExtX = (dc->vportExtX * xNum) / xDenom;
 562     dc->vportExtY = (dc->vportExtY * yNum) / yDenom;
 563     if (dc->vportExtX == 0) dc->vportExtX = 1;
 564     if (dc->vportExtY == 0) dc->vportExtY = 1;
 565     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 566     DC_UpdateXforms( dc );
 567  done:
 568     GDI_ReleaseObj( hdc );
 569     return ret;
 570 }
 571
 572
 573 /***********************************************************************
 574  *           ScaleWindowExt    (GDI.16)
 575  */
 576 DWORD WINAPI ScaleWindowExt16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 577                              INT16 yNum, INT16 yDenom )
 578 {
 579     SIZE size;
 580     if (!ScaleWindowExtEx( hdc, xNum, xDenom, yNum, yDenom, &size ))
 581         return FALSE;
 582     return MAKELONG( size.cx,  size.cy );
 583 }
 584
 585
 586 /***********************************************************************
 587  *           ScaleWindowExtEx16    (GDI.485)
 588  */
 589 BOOL16 WINAPI ScaleWindowExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 590                                   INT16 yNum, INT16 yDenom, LPSIZE16 size )
 591 {
 592     SIZE size32;
 593     BOOL16 ret = ScaleWindowExtEx( hdc, xNum, xDenom, yNum, yDenom,
 594                                      &size32 );
 595     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 596     return ret;
 597 }
 598
 599
 600 /***********************************************************************
 601  *           ScaleWindowExtEx    (GDI32.294)
 602  */
 603 BOOL WINAPI ScaleWindowExtEx( HDC hdc, INT xNum, INT xDenom,
 604                                   INT yNum, INT yDenom, LPSIZE size )
 605 {
 606     BOOL ret = TRUE;
 607     DC * dc = DC_GetDCPtr( hdc );
 608     if (!dc) return FALSE;
 609     if (dc->funcs->pScaleWindowExt)
 610     {
 611         ret = dc->funcs->pScaleWindowExt( dc, xNum, xDenom, yNum, yDenom );
 612         goto done;
 613     }
 614     if (size)
 615     {
 616         size->cx = dc->wndExtX;
 617         size->cy = dc->wndExtY;
 618     }
 619     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 620         goto done;
 621     if (!xNum || !xDenom || !xNum || !yDenom)
 622     {
 623         ret = FALSE;
 624         goto done;
 625     }
 626     dc->wndExtX = (dc->wndExtX * xNum) / xDenom;
 627     dc->wndExtY = (dc->wndExtY * yNum) / yDenom;
 628     if (dc->wndExtX == 0) dc->wndExtX = 1;
 629     if (dc->wndExtY == 0) dc->wndExtY = 1;
 630     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 631     DC_UpdateXforms( dc );
 632  done:
 633     GDI_ReleaseObj( hdc );
 634     return ret;
 635 }