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