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 "wownt32.h"
  23 #include "wine/debug.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(gdi);
  26
  27
  28 /***********************************************************************
  29  *           MAPPING_FixIsotropic
  30  *
  31  * Fix viewport extensions for isotropic mode.
  32  */
  33 void MAPPING_FixIsotropic( DC * dc )
  34 {
  35     double xdim = (double)dc->vportExtX * GetDeviceCaps( dc->hSelf, HORZSIZE ) /
  36                   (GetDeviceCaps( dc->hSelf, HORZRES ) * dc->wndExtX);
  37     double ydim = (double)dc->vportExtY * GetDeviceCaps( dc->hSelf, VERTSIZE ) /
  38                   (GetDeviceCaps( dc->hSelf, VERTRES ) * dc->wndExtY);
  39     if (xdim > ydim)
  40     {
  41         dc->vportExtX = floor(dc->vportExtX * fabs( ydim / xdim ) + 0.5);
  42         if (!dc->vportExtX) dc->vportExtX = 1;
  43     }
  44     else
  45     {
  46         dc->vportExtY = floor(dc->vportExtY * fabs( xdim / ydim ) + 0.5);
  47         if (!dc->vportExtY) dc->vportExtY = 1;
  48     }
  49 }
  50
  51
  52 /***********************************************************************
  53  *           DPtoLP    (GDI.67)
  54  */
  55 BOOL16 WINAPI DPtoLP16( HDC16 hdc, LPPOINT16 points, INT16 count )
  56 {
  57     DC * dc = DC_GetDCPtr( HDC_32(hdc) );
  58     if (!dc) return FALSE;
  59
  60     while (count--)
  61     {
  62         points->x = MulDiv( points->x - dc->vportOrgX, dc->wndExtX, dc->vportExtX ) + dc->wndOrgX;
  63         points->y = MulDiv( points->y - dc->vportOrgY, dc->wndExtY, dc->vportExtY ) + dc->wndOrgY;
  64         points++;
  65     }
  66     GDI_ReleaseObj( HDC_32(hdc) );
  67     return TRUE;
  68 }
  69
  70
  71 /***********************************************************************
  72  *           DPtoLP    (GDI32.@)
  73  */
  74 BOOL WINAPI DPtoLP( HDC hdc, LPPOINT points, INT count )
  75 {
  76     DC * dc = DC_GetDCPtr( hdc );
  77     if (!dc) return FALSE;
  78
  79     if (dc->vport2WorldValid)
  80     {
  81         while (count--)
  82         {
  83             FLOAT x = points->x;
  84             FLOAT y = points->y;
  85             points->x = floor( x * dc->xformVport2World.eM11 +
  86                                y * dc->xformVport2World.eM21 +
  87                                dc->xformVport2World.eDx + 0.5 );
  88             points->y = floor( x * dc->xformVport2World.eM12 +
  89                                y * dc->xformVport2World.eM22 +
  90                                dc->xformVport2World.eDy + 0.5 );
  91             points++;
  92         }
  93     }
  94     GDI_ReleaseObj( hdc );
  95     return (count < 0);
  96 }
  97
  98
  99 /***********************************************************************
 100  *           LPtoDP    (GDI.99)
 101  */
 102 BOOL16 WINAPI LPtoDP16( HDC16 hdc, LPPOINT16 points, INT16 count )
 103 {
 104     DC * dc = DC_GetDCPtr( HDC_32(hdc) );
 105     if (!dc) return FALSE;
 106
 107     while (count--)
 108     {
 109         points->x = MulDiv( points->x - dc->wndOrgX, dc->vportExtX, dc->wndExtX ) + dc->vportOrgX;
 110         points->y = MulDiv( points->y - dc->wndOrgY, dc->vportExtY, dc->wndExtY ) + dc->vportOrgY;
 111         points++;
 112     }
 113     GDI_ReleaseObj( HDC_32(hdc) );
 114     return TRUE;
 115 }
 116
 117
 118 /***********************************************************************
 119  *           LPtoDP    (GDI32.@)
 120  */
 121 BOOL WINAPI LPtoDP( HDC hdc, LPPOINT points, INT count )
 122 {
 123     DC * dc = DC_GetDCPtr( hdc );
 124     if (!dc) return FALSE;
 125
 126     while (count--)
 127     {
 128         FLOAT x = points->x;
 129         FLOAT y = points->y;
 130         points->x = floor( x * dc->xformWorld2Vport.eM11 +
 131                            y * dc->xformWorld2Vport.eM21 +
 132                            dc->xformWorld2Vport.eDx + 0.5 );
 133         points->y = floor( x * dc->xformWorld2Vport.eM12 +
 134                            y * dc->xformWorld2Vport.eM22 +
 135                            dc->xformWorld2Vport.eDy + 0.5 );
 136         points++;
 137     }
 138     GDI_ReleaseObj( hdc );
 139     return TRUE;
 140 }
 141
 142
 143 /***********************************************************************
 144  *           SetMapMode    (GDI32.@)
 145  */
 146 INT WINAPI SetMapMode( HDC hdc, INT mode )
 147 {
 148     INT ret;
 149     INT horzSize, vertSize, horzRes, vertRes;
 150
 151     DC * dc = DC_GetDCPtr( hdc );
 152     if (!dc) return 0;
 153     if (dc->funcs->pSetMapMode)
 154     {
 155         if((ret = dc->funcs->pSetMapMode( dc->physDev, mode )) != TRUE)
 156         {
 157             if(ret == GDI_NO_MORE_WORK)
 158                 ret = TRUE;
 159             goto done;
 160         }
 161     }
 162
 163     TRACE("%p %d\n", hdc, mode );
 164
 165     ret = dc->MapMode;
 166
 167     if (mode == dc->MapMode && (mode == MM_ISOTROPIC || mode == MM_ANISOTROPIC))
 168         goto done;
 169
 170     horzSize = GetDeviceCaps( hdc, HORZSIZE );
 171     vertSize = GetDeviceCaps( hdc, VERTSIZE );
 172     horzRes  = GetDeviceCaps( hdc, HORZRES );
 173     vertRes  = GetDeviceCaps( hdc, VERTRES );
 174     switch(mode)
 175     {
 176     case MM_TEXT:
 177         dc->wndExtX   = 1;
 178         dc->wndExtY   = 1;
 179         dc->vportExtX = 1;
 180         dc->vportExtY = 1;
 181         break;
 182     case MM_LOMETRIC:
 183     case MM_ISOTROPIC:
 184         dc->wndExtX   = horzSize * 10;
 185         dc->wndExtY   = vertSize * 10;
 186         dc->vportExtX = horzRes;
 187         dc->vportExtY = -vertRes;
 188         break;
 189     case MM_HIMETRIC:
 190         dc->wndExtX   = horzSize * 100;
 191         dc->wndExtY   = vertSize * 100;
 192         dc->vportExtX = horzRes;
 193         dc->vportExtY = -vertRes;
 194         break;
 195     case MM_LOENGLISH:
 196         dc->wndExtX   = MulDiv(1000, horzSize, 254);
 197         dc->wndExtY   = MulDiv(1000, vertSize, 254);
 198         dc->vportExtX = horzRes;
 199         dc->vportExtY = -vertRes;
 200         break;
 201     case MM_HIENGLISH:
 202         dc->wndExtX   = MulDiv(10000, horzSize, 254);
 203         dc->wndExtY   = MulDiv(10000, vertSize, 254);
 204         dc->vportExtX = horzRes;
 205         dc->vportExtY = -vertRes;
 206         break;
 207     case MM_TWIPS:
 208         dc->wndExtX   = MulDiv(14400, horzSize, 254);
 209         dc->wndExtY   = MulDiv(14400, vertSize, 254);
 210         dc->vportExtX = horzRes;
 211         dc->vportExtY = -vertRes;
 212         break;
 213     case MM_ANISOTROPIC:
 214         break;
 215     default:
 216         goto done;
 217     }
 218     dc->MapMode = mode;
 219     DC_UpdateXforms( dc );
 220  done:
 221     GDI_ReleaseObj( hdc );
 222     return ret;
 223 }
 224
 225
 226 /***********************************************************************
 227  *           SetViewportExtEx    (GDI32.@)
 228  */
 229 BOOL WINAPI SetViewportExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 230 {
 231     INT ret = TRUE;
 232     DC * dc = DC_GetDCPtr( hdc );
 233     if (!dc) return FALSE;
 234     if (dc->funcs->pSetViewportExt)
 235     {
 236         if((ret = dc->funcs->pSetViewportExt( dc->physDev, x, y )) != TRUE)
 237         {
 238             if(ret == GDI_NO_MORE_WORK)
 239                 ret = TRUE;
 240             goto done;
 241         }
 242     }
 243     if (size)
 244     {
 245         size->cx = dc->vportExtX;
 246         size->cy = dc->vportExtY;
 247     }
 248     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 249         goto done;
 250     if (!x || !y)
 251     {
 252         ret = FALSE;
 253         goto done;
 254     }
 255     dc->vportExtX = x;
 256     dc->vportExtY = y;
 257     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 258     DC_UpdateXforms( dc );
 259  done:
 260     GDI_ReleaseObj( hdc );
 261     return ret;
 262 }
 263
 264
 265 /***********************************************************************
 266  *           SetViewportOrgEx    (GDI32.@)
 267  */
 268 BOOL WINAPI SetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 269 {
 270     INT ret = TRUE;
 271     DC * dc = DC_GetDCPtr( hdc );
 272     if (!dc) return FALSE;
 273     if (dc->funcs->pSetViewportOrg)
 274     {
 275         if((ret = dc->funcs->pSetViewportOrg( dc->physDev, x, y )) != TRUE)
 276         {
 277             if(ret == GDI_NO_MORE_WORK)
 278                 ret = TRUE;
 279             goto done;
 280         }
 281     }
 282     if (pt)
 283     {
 284         pt->x = dc->vportOrgX;
 285         pt->y = dc->vportOrgY;
 286     }
 287     dc->vportOrgX = x;
 288     dc->vportOrgY = y;
 289     DC_UpdateXforms( dc );
 290
 291  done:
 292     GDI_ReleaseObj( hdc );
 293     return ret;
 294 }
 295
 296
 297 /***********************************************************************
 298  *           SetWindowExtEx    (GDI32.@)
 299  */
 300 BOOL WINAPI SetWindowExtEx( HDC hdc, INT x, INT y, LPSIZE size )
 301 {
 302     INT ret = TRUE;
 303     DC * dc = DC_GetDCPtr( hdc );
 304     if (!dc) return FALSE;
 305     if (dc->funcs->pSetWindowExt)
 306     {
 307         if((ret = dc->funcs->pSetWindowExt( dc->physDev, x, y )) != TRUE)
 308         {
 309             if(ret == GDI_NO_MORE_WORK)
 310                 ret = TRUE;
 311             goto done;
 312         }
 313     }
 314     if (size)
 315     {
 316         size->cx = dc->wndExtX;
 317         size->cy = dc->wndExtY;
 318     }
 319     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 320         goto done;
 321     if (!x || !y)
 322     {
 323         ret = FALSE;
 324         goto done;
 325     }
 326     dc->wndExtX = x;
 327     dc->wndExtY = y;
 328     /* Windows fixes MM_ISOTROPIC mode only in SetViewportExtEx() */
 329     DC_UpdateXforms( dc );
 330  done:
 331     GDI_ReleaseObj( hdc );
 332     return ret;
 333 }
 334
 335
 336 /***********************************************************************
 337  *           SetWindowOrgEx    (GDI32.@)
 338  */
 339 BOOL WINAPI SetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 340 {
 341     INT ret = TRUE;
 342     DC * dc = DC_GetDCPtr( hdc );
 343     if (!dc) return FALSE;
 344     if (dc->funcs->pSetWindowOrg)
 345     {
 346         if((ret = dc->funcs->pSetWindowOrg( dc->physDev, x, y )) != TRUE)
 347         {
 348             if(ret == GDI_NO_MORE_WORK)
 349                 ret = TRUE;
 350             goto done;
 351         }
 352     }
 353     if (pt)
 354     {
 355         pt->x = dc->wndOrgX;
 356         pt->y = dc->wndOrgY;
 357     }
 358     dc->wndOrgX = x;
 359     dc->wndOrgY = y;
 360     DC_UpdateXforms( dc );
 361  done:
 362     GDI_ReleaseObj( hdc );
 363     return ret;
 364 }
 365
 366
 367 /***********************************************************************
 368  *           OffsetViewportOrgEx    (GDI32.@)
 369  */
 370 BOOL WINAPI OffsetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt)
 371 {
 372     INT ret = TRUE;
 373     DC * dc = DC_GetDCPtr( hdc );
 374     if (!dc) return FALSE;
 375     if (dc->funcs->pOffsetViewportOrg)
 376     {
 377         if((ret = dc->funcs->pOffsetViewportOrg( dc->physDev, x, y )) != TRUE)
 378         {
 379             if(ret == GDI_NO_MORE_WORK)
 380                 ret = TRUE;
 381             goto done;
 382         }
 383     }
 384     if (pt)
 385     {
 386         pt->x = dc->vportOrgX;
 387         pt->y = dc->vportOrgY;
 388     }
 389     dc->vportOrgX += x;
 390     dc->vportOrgY += y;
 391     DC_UpdateXforms( dc );
 392  done:
 393     GDI_ReleaseObj( hdc );
 394     return ret;
 395 }
 396
 397
 398 /***********************************************************************
 399  *           OffsetWindowOrgEx    (GDI32.@)
 400  */
 401 BOOL WINAPI OffsetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
 402 {
 403     INT ret = TRUE;
 404     DC * dc = DC_GetDCPtr( hdc );
 405     if (!dc) return FALSE;
 406     if (dc->funcs->pOffsetWindowOrg)
 407     {
 408         if((ret = dc->funcs->pOffsetWindowOrg( dc->physDev, x, y )) != TRUE)
 409         {
 410             if(ret == GDI_NO_MORE_WORK)
 411                 ret = TRUE;
 412             goto done;
 413         }
 414     }
 415     if (pt)
 416     {
 417         pt->x = dc->wndOrgX;
 418         pt->y = dc->wndOrgY;
 419     }
 420     dc->wndOrgX += x;
 421     dc->wndOrgY += y;
 422     DC_UpdateXforms( dc );
 423  done:
 424     GDI_ReleaseObj( hdc );
 425     return ret;
 426 }
 427
 428
 429 /***********************************************************************
 430  *           ScaleViewportExtEx    (GDI32.@)
 431  */
 432 BOOL WINAPI ScaleViewportExtEx( HDC hdc, INT xNum, INT xDenom,
 433                                     INT yNum, INT yDenom, LPSIZE size )
 434 {
 435     INT ret = TRUE;
 436     DC * dc = DC_GetDCPtr( hdc );
 437     if (!dc) return FALSE;
 438     if (dc->funcs->pScaleViewportExt)
 439     {
 440         if((ret = dc->funcs->pScaleViewportExt( dc->physDev, xNum, xDenom, yNum, yDenom )) != TRUE)
 441         {
 442             if(ret == GDI_NO_MORE_WORK)
 443                 ret = TRUE;
 444             goto done;
 445         }
 446     }
 447     if (size)
 448     {
 449         size->cx = dc->vportExtX;
 450         size->cy = dc->vportExtY;
 451     }
 452     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 453         goto done;
 454     if (!xNum || !xDenom || !xNum || !yDenom)
 455     {
 456         ret = FALSE;
 457         goto done;
 458     }
 459     dc->vportExtX = (dc->vportExtX * xNum) / xDenom;
 460     dc->vportExtY = (dc->vportExtY * yNum) / yDenom;
 461     if (dc->vportExtX == 0) dc->vportExtX = 1;
 462     if (dc->vportExtY == 0) dc->vportExtY = 1;
 463     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 464     DC_UpdateXforms( dc );
 465  done:
 466     GDI_ReleaseObj( hdc );
 467     return ret;
 468 }
 469
 470
 471 /***********************************************************************
 472  *           ScaleWindowExtEx    (GDI32.@)
 473  */
 474 BOOL WINAPI ScaleWindowExtEx( HDC hdc, INT xNum, INT xDenom,
 475                                   INT yNum, INT yDenom, LPSIZE size )
 476 {
 477     INT ret = TRUE;
 478     DC * dc = DC_GetDCPtr( hdc );
 479     if (!dc) return FALSE;
 480     if (dc->funcs->pScaleWindowExt)
 481     {
 482         if((ret = dc->funcs->pScaleWindowExt( dc->physDev, xNum, xDenom, yNum, yDenom )) != TRUE)
 483         {
 484             if(ret == GDI_NO_MORE_WORK)
 485                 ret = TRUE;
 486             goto done;
 487         }
 488     }
 489     if (size)
 490     {
 491         size->cx = dc->wndExtX;
 492         size->cy = dc->wndExtY;
 493     }
 494     if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
 495         goto done;
 496     if (!xNum || !xDenom || !xNum || !yDenom)
 497     {
 498         ret = FALSE;
 499         goto done;
 500     }
 501     dc->wndExtX = (dc->wndExtX * xNum) / xDenom;
 502     dc->wndExtY = (dc->wndExtY * yNum) / yDenom;
 503     if (dc->wndExtX == 0) dc->wndExtX = 1;
 504     if (dc->wndExtY == 0) dc->wndExtY = 1;
 505     if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
 506     DC_UpdateXforms( dc );
 507  done:
 508     GDI_ReleaseObj( hdc );
 509     return ret;
 510 }