graphics/mapping.c

   1 /*
   2  * GDI mapping mode functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "gdi.h"
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(gdi);
  25
  26
  27 /***********************************************************************
  28  *           MAPPING_FixIsotropic
  29  *
  30  * Fix viewport extensions for isotropic mode.
  31  */
  32 void MAPPING_FixIsotropic( DC * dc )
  33 {
  34     double xdim = (double)dc->vportExtX * GetDeviceCaps( dc->hSelf, HORZSIZE ) /
  35                   (GetDeviceCaps( dc->hSelf, HORZRES ) * dc->wndExtX);
  36     double ydim = (double)dc->vportExtY * GetDeviceCaps( dc->hSelf, VERTSIZE ) /
  37                   (GetDeviceCaps( dc->hSelf, VERTRES ) * dc->wndExtY);
  38     if (xdim > ydim)
  39     {
  40         dc->vportExtX = dc->vportExtX * fabs( ydim / xdim );
  41         if (!dc->vportExtX) dc->vportExtX = 1;
  42     }
  43     else
  44     {
  45         dc->vportExtY = dc->vportExtY * fabs( xdim / ydim );
  46         if (!dc->vportExtY) dc->vportExtY = 1;
  47     }
  48 }
  49
  50
  51 /***********************************************************************
  52  *           DPtoLP    (GDI.67)
  53  */
  54 BOOL16 WINAPI DPtoLP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  55 {
  56     DC * dc = DC_GetDCPtr( hdc );
  57     if (!dc) return FALSE;
  58
  59     while (count--)
  60     {
  61         points->x = XDPTOLP( dc, points->x );
  62         points->y = YDPTOLP( dc, points->y );
  63         points++;
  64     }
  65     GDI_ReleaseObj( hdc );
  66     return TRUE;
  67 }
  68
  69
  70 /***********************************************************************
  71  *           DPtoLP    (GDI32.@)
  72  */
  73 BOOL WINAPI DPtoLP( HDC hdc, LPPOINT points, INT count )
  74 {
  75     DC * dc = DC_GetDCPtr( hdc );
  76     if (!dc) return FALSE;
  77
  78     while (count--)
  79     {
  80         if (!INTERNAL_DPTOLP( dc, points ))
  81             break;
  82         points++;
  83     }
  84     GDI_ReleaseObj( hdc );
  85     return (count < 0);
  86 }
  87
  88
  89 /***********************************************************************
  90  *           LPtoDP    (GDI.99)
  91  */
  92 BOOL16 WINAPI LPtoDP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  93 {
  94     DC * dc = DC_GetDCPtr( hdc );
  95     if (!dc) return FALSE;
  96
  97     while (count--)
  98     {
  99         points->x = XLPTODP( dc, points->x );
 100         points->y = YLPTODP( dc, points->y );
 101         points++;
 102     }
 103     GDI_ReleaseObj( hdc );
 104     return TRUE;
 105 }
 106
 107
 108 /***********************************************************************
 109  *           LPtoDP    (GDI32.@)
 110  */
 111 BOOL WINAPI LPtoDP( HDC hdc, LPPOINT points, INT count )
 112 {
 113     DC * dc = DC_GetDCPtr( hdc );
 114     if (!dc) return FALSE;
 115
 116     while (count--)
 117     {
 118         INTERNAL_LPTODP( dc, points );
 119         points++;
 120     }
 121     GDI_ReleaseObj( hdc );
 122     return TRUE;
 123 }
 124
 125
 126 /***********************************************************************
 127  *           SetMapMode    (GDI.3)
 128  */
 129 INT16 WINAPI SetMapMode16( HDC16 hdc, INT16 mode )
 130 {
 131     return SetMapMode( hdc, mode );
 132 }
 133
 134
 135 /***********************************************************************
 136  *           SetMapMode    (GDI32.@)
 137  */
 138 INT WINAPI SetMapMode( HDC hdc, INT mode )
 139 {
 140     INT prevMode;
 141     INT horzSize, vertSize, horzRes, vertRes;
 142
 143     DC * dc = DC_GetDCPtr( hdc );
 144     if (!dc) return 0;
 145     if (dc->funcs->pSetMapMode)
 146     {
 147         prevMode = dc->funcs->pSetMapMode( dc->physDev, mode );
 148         goto done;
 149     }
 150
 151     TRACE("%04x %d\n", hdc, mode );
 152
 153     prevMode = dc->MapMode;
 154     horzSize = GetDeviceCaps( hdc, HORZSIZE );
 155     vertSize = GetDeviceCaps( hdc, VERTSIZE );
 156     horzRes  = GetDeviceCaps( hdc, HORZRES );
 157     vertRes  = GetDeviceCaps( hdc, VERTRES );
 158     switch(mode)
 159     {
 160     case MM_TEXT:
 161         dc->wndExtX   = 1;
 162         dc->wndExtY   = 1;
 163         dc->vportExtX = 1;
 164         dc->vportExtY = 1;
 165         break;
 166     case MM_LOMETRIC:
 167     case MM_ISOTROPIC:
 168         dc->wndExtX   = horzSize;
 169         dc->wndExtY   = vertSize;
 170         dc->vportExtX = horzRes / 10;
 171         dc->vportExtY = vertRes / -10;
 172         break;
 173     case MM_HIMETRIC:
 174         dc->wndExtX   = horzSize * 10;
 175         dc->wndExtY   = vertSize * 10;
 176         dc->vportExtX = horzRes / 10;
 177         dc->vportExtY = vertRes / -10;
 178         break;
 179     case MM_LOENGLISH:
 180         dc->wndExtX   = horzSize;
 181         dc->wndExtY   = vertSize;
 182         dc->vportExtX = 254L * horzRes / 1000;
 183         dc->vportExtY = -254L * vertRes / 1000;
 184         break;
 185     case MM_HIENGLISH:
 186         dc->wndExtX   = horzSize * 10;
 187         dc->wndExtY   = vertSize * 10;
 188         dc->vportExtX = 254L * horzRes / 1000;
 189         dc->vportExtY = -254L * vertRes / 1000;
 190         break;
 191     case MM_TWIPS:
 192         dc->wndExtX   = 144L * horzSize / 10;
 193         dc->wndExtY   = 144L * vertSize / 10;
 194         dc->vportExtX = 254L * horzRes / 1000;
 195         dc->vportExtY = -254L * vertRes / 1000;
 196         break;
 197     case MM_ANISOTROPIC:
 198         break;
 199     default:
 200         goto done;
 201     }
 202     dc->MapMode = mode;
 203     DC_UpdateXforms( dc );
 204  done:
 205     GDI_ReleaseObj( hdc );
 206     return prevMode;
 207 }
 208
 209
 210 /***********************************************************************
 211  *           SetViewportExt    (GDI.14)
 212  */
 213 DWORD WINAPI SetViewportExt16( HDC16 hdc, INT16 x, INT16 y )
 214 {
 215     SIZE size;
 216     if (!SetViewportExtEx( hdc, x, y, &size )) return 0;
 217     return MAKELONG( size.cx, size.cy );
 218 }
 219
 220
 221 /***********************************************************************
 222  *           SetViewportExtEx    (GDI.479)
 223  */
 224 BOOL16 WINAPI SetViewportExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 225 {
 226     SIZE size32;
 227     BOOL16 ret = SetViewportExtEx( hdc, x, y, &size32 );
 228     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 229     return ret;
 230 }
 231
 232
 233 /***********************************************************************
 234  *           SetViewportExtEx    (GDI32.@)
 235  */
 236 BOOL WINAPI SetViewportExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 237 {
 238     BOOL ret = TRUE;
 239     DC * dc = DC_GetDCPtr( hdc );
 240     if (!dc) return FALSE;
 241     if (dc->funcs->pSetViewportExt)
 242     {
 243         ret = dc->funcs->pSetViewportExt( dc->physDev, x, y );
 244         goto done;
 245     }
 246     if (size)
 247     {
 248         size->cx = dc->vportExtX;
 249         size->cy = dc->vportExtY;
 250     }
 251     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 252         goto done;
 253     if (!x || !y)
 254     {
 255         ret = FALSE;
 256         goto done;
 257     }
 258     dc->vportExtX = x;
 259     dc->vportExtY = y;
 260     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 261     DC_UpdateXforms( dc );
 262  done:
 263     GDI_ReleaseObj( hdc );
 264     return ret;
 265 }
 266
 267
 268 /***********************************************************************
 269  *           SetViewportOrg    (GDI.13)
 270  */
 271 DWORD WINAPI SetViewportOrg16( HDC16 hdc, INT16 x, INT16 y )
 272 {
 273     POINT pt;
 274     if (!SetViewportOrgEx( hdc, x, y, &pt )) return 0;
 275     return MAKELONG( pt.x, pt.y );
 276 }
 277
 278
 279 /***********************************************************************
 280  *           SetViewportOrgEx    (GDI.480)
 281  */
 282 BOOL16 WINAPI SetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 283 {
 284     POINT pt32;
 285     BOOL16 ret = SetViewportOrgEx( hdc, x, y, &pt32 );
 286     if (pt) CONV_POINT32TO16( &pt32, pt );
 287     return ret;
 288 }
 289
 290
 291 /***********************************************************************
 292  *           SetViewportOrgEx    (GDI32.@)
 293  */
 294 BOOL WINAPI SetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 295 {
 296     BOOL ret = TRUE;
 297     DC * dc = DC_GetDCPtr( hdc );
 298     if (!dc) return FALSE;
 299     if (dc->funcs->pSetViewportOrg)
 300         ret = dc->funcs->pSetViewportOrg( dc->physDev, x, y );
 301     else
 302     {
 303         if (pt)
 304         {
 305             pt->x = dc->vportOrgX;
 306             pt->y = dc->vportOrgY;
 307         }
 308         dc->vportOrgX = x;
 309         dc->vportOrgY = y;
 310         DC_UpdateXforms( dc );
 311     }
 312     GDI_ReleaseObj( hdc );
 313     return ret;
 314 }
 315
 316
 317 /***********************************************************************
 318  *           SetWindowExt    (GDI.12)
 319  */
 320 DWORD WINAPI SetWindowExt16( HDC16 hdc, INT16 x, INT16 y )
 321 {
 322     SIZE size;
 323     if (!SetWindowExtEx( hdc, x, y, &size )) return 0;
 324     return MAKELONG( size.cx, size.cy );
 325 }
 326
 327
 328 /***********************************************************************
 329  *           SetWindowExtEx    (GDI.481)
 330  */
 331 BOOL16 WINAPI SetWindowExtEx16( HDC16 hdc, INT16 x, INT16 y, LPSIZE16 size )
 332 {
 333     SIZE size32;
 334     BOOL16 ret = SetWindowExtEx( hdc, x, y, &size32 );
 335     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 336     return ret;
 337 }
 338
 339
 340 /***********************************************************************
 341  *           SetWindowExtEx    (GDI32.@)
 342  */
 343 BOOL WINAPI SetWindowExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 344 {
 345     BOOL ret = TRUE;
 346     DC * dc = DC_GetDCPtr( hdc );
 347     if (!dc) return FALSE;
 348     if (dc->funcs->pSetWindowExt)
 349     {
 350         ret = dc->funcs->pSetWindowExt( dc->physDev, x, y );
 351         goto done;
 352     }
 353     if (size)
 354     {
 355         size->cx = dc->wndExtX;
 356         size->cy = dc->wndExtY;
 357     }
 358     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 359         goto done;
 360     if (!x || !y)
 361     {
 362         ret = FALSE;
 363         goto done;
 364     }
 365     dc->wndExtX = x;
 366     dc->wndExtY = y;
 367     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 368     DC_UpdateXforms( dc );
 369  done:
 370     GDI_ReleaseObj( hdc );
 371     return ret;
 372 }
 373
 374
 375 /***********************************************************************
 376  *           SetWindowOrg    (GDI.11)
 377  */
 378 DWORD WINAPI SetWindowOrg16( HDC16 hdc, INT16 x, INT16 y )
 379 {
 380     POINT pt;
 381     if (!SetWindowOrgEx( hdc, x, y, &pt )) return 0;
 382     return MAKELONG( pt.x, pt.y );
 383 }
 384
 385
 386 /***********************************************************************
 387  *           SetWindowOrgEx    (GDI.482)
 388  */
 389 BOOL16 WINAPI SetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 390 {
 391     POINT pt32;
 392     BOOL16 ret = SetWindowOrgEx( hdc, x, y, &pt32 );
 393     if (pt) CONV_POINT32TO16( &pt32, pt );
 394     return ret;
 395 }
 396
 397
 398 /***********************************************************************
 399  *           SetWindowOrgEx    (GDI32.@)
 400  */
 401 BOOL WINAPI SetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 402 {
 403     BOOL ret = TRUE;
 404     DC * dc = DC_GetDCPtr( hdc );
 405     if (!dc) return FALSE;
 406     if (dc->funcs->pSetWindowOrg) ret = dc->funcs->pSetWindowOrg( dc->physDev, x, y );
 407     else
 408     {
 409         if (pt)
 410         {
 411             pt->x = dc->wndOrgX;
 412             pt->y = dc->wndOrgY;
 413         }
 414         dc->wndOrgX = x;
 415         dc->wndOrgY = y;
 416         DC_UpdateXforms( dc );
 417     }
 418     GDI_ReleaseObj( hdc );
 419     return ret;
 420 }
 421
 422
 423 /***********************************************************************
 424  *           OffsetViewportOrg    (GDI.17)
 425  */
 426 DWORD WINAPI OffsetViewportOrg16( HDC16 hdc, INT16 x, INT16 y )
 427 {
 428     POINT pt;
 429     if (!OffsetViewportOrgEx( hdc, x, y, &pt )) return 0;
 430     return MAKELONG( pt.x, pt.y );
 431 }
 432
 433
 434 /***********************************************************************
 435  *           OffsetViewportOrgEx    (GDI.476)
 436  */
 437 BOOL16 WINAPI OffsetViewportOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt)
 438 {
 439     POINT pt32;
 440     BOOL16 ret = OffsetViewportOrgEx( hdc, x, y, &pt32 );
 441     if (pt) CONV_POINT32TO16( &pt32, pt );
 442     return ret;
 443 }
 444
 445
 446 /***********************************************************************
 447  *           OffsetViewportOrgEx    (GDI32.@)
 448  */
 449 BOOL WINAPI OffsetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt)
 450 {
 451     BOOL ret = TRUE;
 452     DC * dc = DC_GetDCPtr( hdc );
 453     if (!dc) return FALSE;
 454     if (dc->funcs->pOffsetViewportOrg)
 455         ret = dc->funcs->pOffsetViewportOrg( dc->physDev, x, y );
 456     else
 457     {
 458         if (pt)
 459         {
 460             pt->x = dc->vportOrgX;
 461             pt->y = dc->vportOrgY;
 462         }
 463         dc->vportOrgX += x;
 464         dc->vportOrgY += y;
 465         DC_UpdateXforms( dc );
 466     }
 467     GDI_ReleaseObj( hdc );
 468     return ret;
 469 }
 470
 471
 472 /***********************************************************************
 473  *           OffsetWindowOrg    (GDI.15)
 474  */
 475 DWORD WINAPI OffsetWindowOrg16( HDC16 hdc, INT16 x, INT16 y )
 476 {
 477     POINT pt;
 478     if (!OffsetWindowOrgEx( hdc, x, y, &pt )) return 0;
 479     return MAKELONG( pt.x, pt.y );
 480 }
 481
 482
 483 /***********************************************************************
 484  *           OffsetWindowOrgEx    (GDI.477)
 485  */
 486 BOOL16 WINAPI OffsetWindowOrgEx16( HDC16 hdc, INT16 x, INT16 y, LPPOINT16 pt )
 487 {
 488     POINT pt32;
 489     BOOL16 ret = OffsetWindowOrgEx( hdc, x, y, &pt32 );
 490     if (pt) CONV_POINT32TO16( &pt32, pt );
 491     return ret;
 492 }
 493
 494
 495 /***********************************************************************
 496  *           OffsetWindowOrgEx    (GDI32.@)
 497  */
 498 BOOL WINAPI OffsetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 499 {
 500     BOOL ret = TRUE;
 501     DC * dc = DC_GetDCPtr( hdc );
 502     if (!dc) return FALSE;
 503     if (dc->funcs->pOffsetWindowOrg)
 504         ret = dc->funcs->pOffsetWindowOrg( dc->physDev, x, y );
 505     else
 506     {
 507         if (pt)
 508         {
 509             pt->x = dc->wndOrgX;
 510             pt->y = dc->wndOrgY;
 511         }
 512         dc->wndOrgX += x;
 513         dc->wndOrgY += y;
 514         DC_UpdateXforms( dc );
 515     }
 516     GDI_ReleaseObj( hdc );
 517     return ret;
 518 }
 519
 520
 521 /***********************************************************************
 522  *           ScaleViewportExt    (GDI.18)
 523  */
 524 DWORD WINAPI ScaleViewportExt16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 525                                INT16 yNum, INT16 yDenom )
 526 {
 527     SIZE size;
 528     if (!ScaleViewportExtEx( hdc, xNum, xDenom, yNum, yDenom, &size ))
 529         return FALSE;
 530     return MAKELONG( size.cx,  size.cy );
 531 }
 532
 533
 534 /***********************************************************************
 535  *           ScaleViewportExtEx    (GDI.484)
 536  */
 537 BOOL16 WINAPI ScaleViewportExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 538                                     INT16 yNum, INT16 yDenom, LPSIZE16 size )
 539 {
 540     SIZE size32;
 541     BOOL16 ret = ScaleViewportExtEx( hdc, xNum, xDenom, yNum, yDenom,
 542                                        &size32 );
 543     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 544     return ret;
 545 }
 546
 547
 548 /***********************************************************************
 549  *           ScaleViewportExtEx    (GDI32.@)
 550  */
 551 BOOL WINAPI ScaleViewportExtEx( HDC hdc, INT xNum, INT xDenom,
 552                                     INT yNum, INT yDenom, LPSIZE size )
 553 {
 554     BOOL ret = TRUE;
 555     DC * dc = DC_GetDCPtr( hdc );
 556     if (!dc) return FALSE;
 557     if (dc->funcs->pScaleViewportExt)
 558     {
 559         ret = dc->funcs->pScaleViewportExt( dc->physDev, xNum, xDenom, yNum, yDenom );
 560         goto done;
 561     }
 562     if (size)
 563     {
 564         size->cx = dc->vportExtX;
 565         size->cy = dc->vportExtY;
 566     }
 567     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 568         goto done;
 569     if (!xNum || !xDenom || !xNum || !yDenom)
 570     {
 571         ret = FALSE;
 572         goto done;
 573     }
 574     dc->vportExtX = (dc->vportExtX * xNum) / xDenom;
 575     dc->vportExtY = (dc->vportExtY * yNum) / yDenom;
 576     if (dc->vportExtX == 0) dc->vportExtX = 1;
 577     if (dc->vportExtY == 0) dc->vportExtY = 1;
 578     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 579     DC_UpdateXforms( dc );
 580  done:
 581     GDI_ReleaseObj( hdc );
 582     return ret;
 583 }
 584
 585
 586 /***********************************************************************
 587  *           ScaleWindowExt    (GDI.16)
 588  */
 589 DWORD WINAPI ScaleWindowExt16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 590                              INT16 yNum, INT16 yDenom )
 591 {
 592     SIZE size;
 593     if (!ScaleWindowExtEx( hdc, xNum, xDenom, yNum, yDenom, &size ))
 594         return FALSE;
 595     return MAKELONG( size.cx,  size.cy );
 596 }
 597
 598
 599 /***********************************************************************
 600  *           ScaleWindowExtEx    (GDI.485)
 601  */
 602 BOOL16 WINAPI ScaleWindowExtEx16( HDC16 hdc, INT16 xNum, INT16 xDenom,
 603                                   INT16 yNum, INT16 yDenom, LPSIZE16 size )
 604 {
 605     SIZE size32;
 606     BOOL16 ret = ScaleWindowExtEx( hdc, xNum, xDenom, yNum, yDenom,
 607                                      &size32 );
 608     if (size) { size->cx = size32.cx; size->cy = size32.cy; }
 609     return ret;
 610 }
 611
 612
 613 /***********************************************************************
 614  *           ScaleWindowExtEx    (GDI32.@)
 615  */
 616 BOOL WINAPI ScaleWindowExtEx( HDC hdc, INT xNum, INT xDenom,
 617                                   INT yNum, INT yDenom, LPSIZE size )
 618 {
 619     BOOL ret = TRUE;
 620     DC * dc = DC_GetDCPtr( hdc );
 621     if (!dc) return FALSE;
 622     if (dc->funcs->pScaleWindowExt)
 623     {
 624         ret = dc->funcs->pScaleWindowExt( dc->physDev, xNum, xDenom, yNum, yDenom );
 625         goto done;
 626     }
 627     if (size)
 628     {
 629         size->cx = dc->wndExtX;
 630         size->cy = dc->wndExtY;
 631     }
 632     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 633         goto done;
 634     if (!xNum || !xDenom || !xNum || !yDenom)
 635     {
 636         ret = FALSE;
 637         goto done;
 638     }
 639     dc->wndExtX = (dc->wndExtX * xNum) / xDenom;
 640     dc->wndExtY = (dc->wndExtY * yNum) / yDenom;
 641     if (dc->wndExtX == 0) dc->wndExtX = 1;
 642     if (dc->wndExtY == 0) dc->wndExtY = 1;
 643     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 644     DC_UpdateXforms( dc );
 645  done:
 646     GDI_ReleaseObj( hdc );
 647     return ret;
 648 }