2 * GDI mapping mode functions
4 * Copyright 1993 Alexandre Julliard
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.
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.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 #include "gdi_private.h"
24 #include "wine/debug.h"
26 WINE_DEFAULT_DEBUG_CHANNEL(gdi);
29 /***********************************************************************
30 * MAPPING_FixIsotropic
32 * Fix viewport extensions for isotropic mode.
34 void MAPPING_FixIsotropic( DC * dc )
36 double xdim = fabs((double)dc->vportExtX * GetDeviceCaps( dc->hSelf, HORZSIZE ) /
37 (GetDeviceCaps( dc->hSelf, HORZRES ) * dc->wndExtX));
38 double ydim = fabs((double)dc->vportExtY * GetDeviceCaps( dc->hSelf, VERTSIZE ) /
39 (GetDeviceCaps( dc->hSelf, VERTRES ) * dc->wndExtY));
43 INT mincx = (dc->vportExtX >= 0) ? 1 : -1;
44 dc->vportExtX = floor(dc->vportExtX * ydim / xdim + 0.5);
45 if (!dc->vportExtX) dc->vportExtX = mincx;
49 INT mincy = (dc->vportExtY >= 0) ? 1 : -1;
50 dc->vportExtY = floor(dc->vportExtY * xdim / ydim + 0.5);
51 if (!dc->vportExtY) dc->vportExtY = mincy;
56 /***********************************************************************
59 BOOL16 WINAPI DPtoLP16( HDC16 hdc, LPPOINT16 points, INT16 count )
61 DC * dc = DC_GetDCPtr( HDC_32(hdc) );
62 if (!dc) return FALSE;
66 points->x = MulDiv( points->x - dc->vportOrgX, dc->wndExtX, dc->vportExtX ) + dc->wndOrgX;
67 points->y = MulDiv( points->y - dc->vportOrgY, dc->wndExtY, dc->vportExtY ) + dc->wndOrgY;
70 GDI_ReleaseObj( HDC_32(hdc) );
75 /***********************************************************************
78 BOOL WINAPI DPtoLP( HDC hdc, LPPOINT points, INT count )
80 DC * dc = DC_GetDCPtr( hdc );
81 if (!dc) return FALSE;
83 if (dc->vport2WorldValid)
89 points->x = floor( x * dc->xformVport2World.eM11 +
90 y * dc->xformVport2World.eM21 +
91 dc->xformVport2World.eDx + 0.5 );
92 points->y = floor( x * dc->xformVport2World.eM12 +
93 y * dc->xformVport2World.eM22 +
94 dc->xformVport2World.eDy + 0.5 );
98 GDI_ReleaseObj( hdc );
103 /***********************************************************************
106 BOOL16 WINAPI LPtoDP16( HDC16 hdc, LPPOINT16 points, INT16 count )
108 DC * dc = DC_GetDCPtr( HDC_32(hdc) );
109 if (!dc) return FALSE;
113 points->x = MulDiv( points->x - dc->wndOrgX, dc->vportExtX, dc->wndExtX ) + dc->vportOrgX;
114 points->y = MulDiv( points->y - dc->wndOrgY, dc->vportExtY, dc->wndExtY ) + dc->vportOrgY;
117 GDI_ReleaseObj( HDC_32(hdc) );
122 /***********************************************************************
125 BOOL WINAPI LPtoDP( HDC hdc, LPPOINT points, INT count )
127 DC * dc = DC_GetDCPtr( hdc );
128 if (!dc) return FALSE;
134 points->x = floor( x * dc->xformWorld2Vport.eM11 +
135 y * dc->xformWorld2Vport.eM21 +
136 dc->xformWorld2Vport.eDx + 0.5 );
137 points->y = floor( x * dc->xformWorld2Vport.eM12 +
138 y * dc->xformWorld2Vport.eM22 +
139 dc->xformWorld2Vport.eDy + 0.5 );
142 GDI_ReleaseObj( hdc );
147 /***********************************************************************
148 * SetMapMode (GDI32.@)
150 INT WINAPI SetMapMode( HDC hdc, INT mode )
153 INT horzSize, vertSize, horzRes, vertRes;
155 DC * dc = DC_GetDCPtr( hdc );
157 if (dc->funcs->pSetMapMode)
159 if((ret = dc->funcs->pSetMapMode( dc->physDev, mode )) != TRUE)
161 if(ret == GDI_NO_MORE_WORK)
167 TRACE("%p %d\n", hdc, mode );
171 if (mode == dc->MapMode && (mode == MM_ISOTROPIC || mode == MM_ANISOTROPIC))
174 horzSize = GetDeviceCaps( hdc, HORZSIZE );
175 vertSize = GetDeviceCaps( hdc, VERTSIZE );
176 horzRes = GetDeviceCaps( hdc, HORZRES );
177 vertRes = GetDeviceCaps( hdc, VERTRES );
188 dc->wndExtX = horzSize * 10;
189 dc->wndExtY = vertSize * 10;
190 dc->vportExtX = horzRes;
191 dc->vportExtY = -vertRes;
194 dc->wndExtX = horzSize * 100;
195 dc->wndExtY = vertSize * 100;
196 dc->vportExtX = horzRes;
197 dc->vportExtY = -vertRes;
200 dc->wndExtX = MulDiv(1000, horzSize, 254);
201 dc->wndExtY = MulDiv(1000, vertSize, 254);
202 dc->vportExtX = horzRes;
203 dc->vportExtY = -vertRes;
206 dc->wndExtX = MulDiv(10000, horzSize, 254);
207 dc->wndExtY = MulDiv(10000, vertSize, 254);
208 dc->vportExtX = horzRes;
209 dc->vportExtY = -vertRes;
212 dc->wndExtX = MulDiv(14400, horzSize, 254);
213 dc->wndExtY = MulDiv(14400, vertSize, 254);
214 dc->vportExtX = horzRes;
215 dc->vportExtY = -vertRes;
223 DC_UpdateXforms( dc );
225 GDI_ReleaseObj( hdc );
230 /***********************************************************************
231 * SetViewportExtEx (GDI32.@)
233 BOOL WINAPI SetViewportExtEx( HDC hdc, INT x, INT y, LPSIZE size )
236 DC * dc = DC_GetDCPtr( hdc );
237 if (!dc) return FALSE;
238 if (dc->funcs->pSetViewportExt)
240 if((ret = dc->funcs->pSetViewportExt( dc->physDev, x, y )) != TRUE)
242 if(ret == GDI_NO_MORE_WORK)
249 size->cx = dc->vportExtX;
250 size->cy = dc->vportExtY;
252 if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
261 if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
262 DC_UpdateXforms( dc );
264 GDI_ReleaseObj( hdc );
269 /***********************************************************************
270 * SetViewportOrgEx (GDI32.@)
272 BOOL WINAPI SetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
275 DC * dc = DC_GetDCPtr( hdc );
276 if (!dc) return FALSE;
277 if (dc->funcs->pSetViewportOrg)
279 if((ret = dc->funcs->pSetViewportOrg( dc->physDev, x, y )) != TRUE)
281 if(ret == GDI_NO_MORE_WORK)
288 pt->x = dc->vportOrgX;
289 pt->y = dc->vportOrgY;
293 DC_UpdateXforms( dc );
296 GDI_ReleaseObj( hdc );
301 /***********************************************************************
302 * SetWindowExtEx (GDI32.@)
304 BOOL WINAPI SetWindowExtEx( HDC hdc, INT x, INT y, LPSIZE size )
307 DC * dc = DC_GetDCPtr( hdc );
308 if (!dc) return FALSE;
309 if (dc->funcs->pSetWindowExt)
311 if((ret = dc->funcs->pSetWindowExt( dc->physDev, x, y )) != TRUE)
313 if(ret == GDI_NO_MORE_WORK)
320 size->cx = dc->wndExtX;
321 size->cy = dc->wndExtY;
323 if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
332 /* The API docs say that you should call SetWindowExtEx before
333 SetViewportExtEx. This advice does not imply that Windows
334 doesn't ensure the isotropic mapping after SetWindowExtEx! */
335 if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
336 DC_UpdateXforms( dc );
338 GDI_ReleaseObj( hdc );
343 /***********************************************************************
344 * SetWindowOrgEx (GDI32.@)
346 BOOL WINAPI SetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
349 DC * dc = DC_GetDCPtr( hdc );
350 if (!dc) return FALSE;
351 if (dc->funcs->pSetWindowOrg)
353 if((ret = dc->funcs->pSetWindowOrg( dc->physDev, x, y )) != TRUE)
355 if(ret == GDI_NO_MORE_WORK)
367 DC_UpdateXforms( dc );
369 GDI_ReleaseObj( hdc );
374 /***********************************************************************
375 * OffsetViewportOrgEx (GDI32.@)
377 BOOL WINAPI OffsetViewportOrgEx( HDC hdc, INT x, INT y, LPPOINT pt)
380 DC * dc = DC_GetDCPtr( hdc );
381 if (!dc) return FALSE;
382 if (dc->funcs->pOffsetViewportOrg)
384 if((ret = dc->funcs->pOffsetViewportOrg( dc->physDev, x, y )) != TRUE)
386 if(ret == GDI_NO_MORE_WORK)
393 pt->x = dc->vportOrgX;
394 pt->y = dc->vportOrgY;
398 DC_UpdateXforms( dc );
400 GDI_ReleaseObj( hdc );
405 /***********************************************************************
406 * OffsetWindowOrgEx (GDI32.@)
408 BOOL WINAPI OffsetWindowOrgEx( HDC hdc, INT x, INT y, LPPOINT pt )
411 DC * dc = DC_GetDCPtr( hdc );
412 if (!dc) return FALSE;
413 if (dc->funcs->pOffsetWindowOrg)
415 if((ret = dc->funcs->pOffsetWindowOrg( dc->physDev, x, y )) != TRUE)
417 if(ret == GDI_NO_MORE_WORK)
429 DC_UpdateXforms( dc );
431 GDI_ReleaseObj( hdc );
436 /***********************************************************************
437 * ScaleViewportExtEx (GDI32.@)
439 BOOL WINAPI ScaleViewportExtEx( HDC hdc, INT xNum, INT xDenom,
440 INT yNum, INT yDenom, LPSIZE size )
443 DC * dc = DC_GetDCPtr( hdc );
444 if (!dc) return FALSE;
445 if (dc->funcs->pScaleViewportExt)
447 if((ret = dc->funcs->pScaleViewportExt( dc->physDev, xNum, xDenom, yNum, yDenom )) != TRUE)
449 if(ret == GDI_NO_MORE_WORK)
456 size->cx = dc->vportExtX;
457 size->cy = dc->vportExtY;
459 if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
461 if (!xNum || !xDenom || !xNum || !yDenom)
466 dc->vportExtX = (dc->vportExtX * xNum) / xDenom;
467 dc->vportExtY = (dc->vportExtY * yNum) / yDenom;
468 if (dc->vportExtX == 0) dc->vportExtX = 1;
469 if (dc->vportExtY == 0) dc->vportExtY = 1;
470 if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
471 DC_UpdateXforms( dc );
473 GDI_ReleaseObj( hdc );
478 /***********************************************************************
479 * ScaleWindowExtEx (GDI32.@)
481 BOOL WINAPI ScaleWindowExtEx( HDC hdc, INT xNum, INT xDenom,
482 INT yNum, INT yDenom, LPSIZE size )
485 DC * dc = DC_GetDCPtr( hdc );
486 if (!dc) return FALSE;
487 if (dc->funcs->pScaleWindowExt)
489 if((ret = dc->funcs->pScaleWindowExt( dc->physDev, xNum, xDenom, yNum, yDenom )) != TRUE)
491 if(ret == GDI_NO_MORE_WORK)
498 size->cx = dc->wndExtX;
499 size->cy = dc->wndExtY;
501 if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
503 if (!xNum || !xDenom || !xNum || !yDenom)
508 dc->wndExtX = (dc->wndExtX * xNum) / xDenom;
509 dc->wndExtY = (dc->wndExtY * yNum) / yDenom;
510 if (dc->wndExtX == 0) dc->wndExtX = 1;
511 if (dc->wndExtY == 0) dc->wndExtY = 1;
512 if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
513 DC_UpdateXforms( dc );
515 GDI_ReleaseObj( hdc );