2 * GDI Device Context functions
4 * Copyright 1993 Alexandre Julliard
14 #include "debugtools.h"
20 #include "wine/winuser16.h"
22 DEFAULT_DEBUG_CHANNEL(dc);
25 /***********************************************************************
28 DC *DC_AllocDC( const DC_FUNCTIONS *funcs )
33 if (!(dc = GDI_AllocObject( sizeof(*dc), DC_MAGIC, &hdc ))) return NULL;
54 dc->hPen = GetStockObject( BLACK_PEN );
55 dc->hBrush = GetStockObject( WHITE_BRUSH );
56 dc->hFont = GetStockObject( SYSTEM_FONT );
59 dc->hPalette = GetStockObject( DEFAULT_PALETTE );
60 dc->ROPmode = R2_COPYPEN;
61 dc->polyFillMode = ALTERNATE;
62 dc->stretchBltMode = BLACKONWHITE;
63 dc->relAbsMode = ABSOLUTE;
64 dc->backgroundMode = OPAQUE;
65 dc->backgroundColor = RGB( 255, 255, 255 );
66 dc->textColor = RGB( 0, 0, 0 );
69 dc->textAlign = TA_LEFT | TA_TOP | TA_NOUPDATECP;
71 dc->breakTotalExtra = 0;
75 dc->totalExtent.left = 0;
76 dc->totalExtent.top = 0;
77 dc->totalExtent.right = 0;
78 dc->totalExtent.bottom = 0;
80 dc->MapMode = MM_TEXT;
81 dc->GraphicsMode = GM_COMPATIBLE;
84 dc->pAbortProc = NULL;
87 dc->ArcDirection = AD_COUNTERCLOCKWISE;
88 dc->xformWorld2Wnd.eM11 = 1.0f;
89 dc->xformWorld2Wnd.eM12 = 0.0f;
90 dc->xformWorld2Wnd.eM21 = 0.0f;
91 dc->xformWorld2Wnd.eM22 = 1.0f;
92 dc->xformWorld2Wnd.eDx = 0.0f;
93 dc->xformWorld2Wnd.eDy = 0.0f;
94 dc->xformWorld2Vport = dc->xformWorld2Wnd;
95 dc->xformVport2World = dc->xformWorld2Wnd;
96 dc->vport2WorldValid = TRUE;
97 PATH_InitGdiPath(&dc->path);
103 /***********************************************************************
106 DC *DC_GetDCPtr( HDC hdc )
108 GDIOBJHDR *ptr = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
109 if (!ptr) return NULL;
110 if ((GDIMAGIC(ptr->wMagic) == DC_MAGIC) ||
111 (GDIMAGIC(ptr->wMagic) == METAFILE_DC_MAGIC) ||
112 (GDIMAGIC(ptr->wMagic) == ENHMETAFILE_DC_MAGIC))
114 GDI_ReleaseObj( hdc );
115 SetLastError( ERROR_INVALID_HANDLE );
119 /***********************************************************************
122 * Retrieve a DC ptr while making sure the visRgn is updated.
123 * This function may call up to USER so the GDI lock should _not_
124 * be held when calling it.
126 DC *DC_GetDCUpdate( HDC hdc )
128 DC *dc = DC_GetDCPtr( hdc );
129 if (!dc) return NULL;
130 while (dc->flags & DC_DIRTY)
132 dc->flags &= ~DC_DIRTY;
133 if (!(dc->flags & (DC_SAVED | DC_MEMORY)))
135 DCHOOKPROC proc = dc->hookThunk;
138 DWORD data = dc->dwHookData;
139 GDI_ReleaseObj( hdc );
140 proc( hdc, DCHC_INVALIDVISRGN, data, 0 );
141 if (!(dc = DC_GetDCPtr( hdc ))) break;
142 /* otherwise restart the loop in case it became dirty again in the meantime */
149 /***********************************************************************
152 * Setup device-specific DC values for a newly created DC.
154 void DC_InitDC( DC* dc )
156 RealizeDefaultPalette16( dc->hSelf );
157 SetTextColor( dc->hSelf, dc->textColor );
158 SetBkColor( dc->hSelf, dc->backgroundColor );
159 SelectObject( dc->hSelf, dc->hPen );
160 SelectObject( dc->hSelf, dc->hBrush );
161 SelectObject( dc->hSelf, dc->hFont );
162 CLIPPING_UpdateGCRegion( dc );
166 /***********************************************************************
169 * Computes the inverse of the transformation xformSrc and stores it to
170 * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
173 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
177 determinant = xformSrc->eM11*xformSrc->eM22 -
178 xformSrc->eM12*xformSrc->eM21;
179 if (determinant > -1e-12 && determinant < 1e-12)
182 xformDest->eM11 = xformSrc->eM22 / determinant;
183 xformDest->eM12 = -xformSrc->eM12 / determinant;
184 xformDest->eM21 = -xformSrc->eM21 / determinant;
185 xformDest->eM22 = xformSrc->eM11 / determinant;
186 xformDest->eDx = -xformSrc->eDx * xformDest->eM11 -
187 xformSrc->eDy * xformDest->eM21;
188 xformDest->eDy = -xformSrc->eDx * xformDest->eM12 -
189 xformSrc->eDy * xformDest->eM22;
195 /***********************************************************************
198 * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
199 * fields of the specified DC by creating a transformation that
200 * represents the current mapping mode and combining it with the DC's
201 * world transform. This function should be called whenever the
202 * parameters associated with the mapping mode (window and viewport
203 * extents and origins) or the world transform change.
205 void DC_UpdateXforms( DC *dc )
207 XFORM xformWnd2Vport;
208 FLOAT scaleX, scaleY;
210 /* Construct a transformation to do the window-to-viewport conversion */
211 scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
212 scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
213 xformWnd2Vport.eM11 = scaleX;
214 xformWnd2Vport.eM12 = 0.0;
215 xformWnd2Vport.eM21 = 0.0;
216 xformWnd2Vport.eM22 = scaleY;
217 xformWnd2Vport.eDx = (FLOAT)dc->vportOrgX -
218 scaleX * (FLOAT)dc->wndOrgX;
219 xformWnd2Vport.eDy = (FLOAT)dc->vportOrgY -
220 scaleY * (FLOAT)dc->wndOrgY;
222 /* Combine with the world transformation */
223 CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
226 /* Create inverse of world-to-viewport transformation */
227 dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
228 &dc->xformVport2World );
232 /***********************************************************************
233 * GetDCState (GDI.179)
235 HDC16 WINAPI GetDCState16( HDC16 hdc )
240 if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
241 if (!(newdc = GDI_AllocObject( sizeof(DC), DC_MAGIC, &handle )))
243 GDI_ReleaseObj( hdc );
246 TRACE("(%04x): returning %04x\n", hdc, handle );
248 newdc->flags = dc->flags | DC_SAVED;
249 newdc->hPen = dc->hPen;
250 newdc->hBrush = dc->hBrush;
251 newdc->hFont = dc->hFont;
252 newdc->hBitmap = dc->hBitmap;
253 newdc->hDevice = dc->hDevice;
254 newdc->hPalette = dc->hPalette;
255 newdc->totalExtent = dc->totalExtent;
256 newdc->bitsPerPixel = dc->bitsPerPixel;
257 newdc->ROPmode = dc->ROPmode;
258 newdc->polyFillMode = dc->polyFillMode;
259 newdc->stretchBltMode = dc->stretchBltMode;
260 newdc->relAbsMode = dc->relAbsMode;
261 newdc->backgroundMode = dc->backgroundMode;
262 newdc->backgroundColor = dc->backgroundColor;
263 newdc->textColor = dc->textColor;
264 newdc->brushOrgX = dc->brushOrgX;
265 newdc->brushOrgY = dc->brushOrgY;
266 newdc->textAlign = dc->textAlign;
267 newdc->charExtra = dc->charExtra;
268 newdc->breakTotalExtra = dc->breakTotalExtra;
269 newdc->breakCount = dc->breakCount;
270 newdc->breakExtra = dc->breakExtra;
271 newdc->breakRem = dc->breakRem;
272 newdc->MapMode = dc->MapMode;
273 newdc->GraphicsMode = dc->GraphicsMode;
275 /* Apparently, the DC origin is not changed by [GS]etDCState */
276 newdc->DCOrgX = dc->DCOrgX;
277 newdc->DCOrgY = dc->DCOrgY;
279 newdc->CursPosX = dc->CursPosX;
280 newdc->CursPosY = dc->CursPosY;
281 newdc->ArcDirection = dc->ArcDirection;
282 newdc->xformWorld2Wnd = dc->xformWorld2Wnd;
283 newdc->xformWorld2Vport = dc->xformWorld2Vport;
284 newdc->xformVport2World = dc->xformVport2World;
285 newdc->vport2WorldValid = dc->vport2WorldValid;
286 newdc->wndOrgX = dc->wndOrgX;
287 newdc->wndOrgY = dc->wndOrgY;
288 newdc->wndExtX = dc->wndExtX;
289 newdc->wndExtY = dc->wndExtY;
290 newdc->vportOrgX = dc->vportOrgX;
291 newdc->vportOrgY = dc->vportOrgY;
292 newdc->vportExtX = dc->vportExtX;
293 newdc->vportExtY = dc->vportExtY;
295 newdc->hSelf = (HDC)handle;
296 newdc->saveLevel = 0;
298 PATH_InitGdiPath( &newdc->path );
300 newdc->pAbortProc = NULL;
301 newdc->hookThunk = NULL;
304 /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
306 newdc->hGCClipRgn = newdc->hVisRgn = 0;
309 newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
310 CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
314 GDI_ReleaseObj( handle );
315 GDI_ReleaseObj( hdc );
320 /***********************************************************************
321 * SetDCState (GDI.180)
323 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
327 if (!(dc = GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
328 if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC )))
330 GDI_ReleaseObj( hdc );
333 if (!dcs->flags & DC_SAVED)
335 GDI_ReleaseObj( hdc );
336 GDI_ReleaseObj( hdcs );
339 TRACE("%04x %04x\n", hdc, hdcs );
341 dc->flags = dcs->flags & ~DC_SAVED;
342 dc->hDevice = dcs->hDevice;
343 dc->totalExtent = dcs->totalExtent;
344 dc->ROPmode = dcs->ROPmode;
345 dc->polyFillMode = dcs->polyFillMode;
346 dc->stretchBltMode = dcs->stretchBltMode;
347 dc->relAbsMode = dcs->relAbsMode;
348 dc->backgroundMode = dcs->backgroundMode;
349 dc->backgroundColor = dcs->backgroundColor;
350 dc->textColor = dcs->textColor;
351 dc->brushOrgX = dcs->brushOrgX;
352 dc->brushOrgY = dcs->brushOrgY;
353 dc->textAlign = dcs->textAlign;
354 dc->charExtra = dcs->charExtra;
355 dc->breakTotalExtra = dcs->breakTotalExtra;
356 dc->breakCount = dcs->breakCount;
357 dc->breakExtra = dcs->breakExtra;
358 dc->breakRem = dcs->breakRem;
359 dc->MapMode = dcs->MapMode;
360 dc->GraphicsMode = dcs->GraphicsMode;
362 /* Apparently, the DC origin is not changed by [GS]etDCState */
363 dc->DCOrgX = dcs->DCOrgX;
364 dc->DCOrgY = dcs->DCOrgY;
366 dc->CursPosX = dcs->CursPosX;
367 dc->CursPosY = dcs->CursPosY;
368 dc->ArcDirection = dcs->ArcDirection;
369 dc->xformWorld2Wnd = dcs->xformWorld2Wnd;
370 dc->xformWorld2Vport = dcs->xformWorld2Vport;
371 dc->xformVport2World = dcs->xformVport2World;
372 dc->vport2WorldValid = dcs->vport2WorldValid;
374 dc->wndOrgX = dcs->wndOrgX;
375 dc->wndOrgY = dcs->wndOrgY;
376 dc->wndExtX = dcs->wndExtX;
377 dc->wndExtY = dcs->wndExtY;
378 dc->vportOrgX = dcs->vportOrgX;
379 dc->vportOrgY = dcs->vportOrgY;
380 dc->vportExtX = dcs->vportExtX;
381 dc->vportExtY = dcs->vportExtY;
383 if (!(dc->flags & DC_MEMORY)) dc->bitsPerPixel = dcs->bitsPerPixel;
387 if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
388 CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
392 if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
395 CLIPPING_UpdateGCRegion( dc );
397 SelectObject( hdc, dcs->hBitmap );
398 SelectObject( hdc, dcs->hBrush );
399 SelectObject( hdc, dcs->hFont );
400 SelectObject( hdc, dcs->hPen );
401 SetBkColor( hdc, dcs->backgroundColor);
402 SetTextColor( hdc, dcs->textColor);
403 GDISelectPalette16( hdc, dcs->hPalette, FALSE );
404 GDI_ReleaseObj( hdcs );
405 GDI_ReleaseObj( hdc );
409 /***********************************************************************
412 INT16 WINAPI SaveDC16( HDC16 hdc )
414 return (INT16)SaveDC( hdc );
418 /***********************************************************************
421 INT WINAPI SaveDC( HDC hdc )
427 dc = DC_GetDCUpdate( hdc );
430 if(dc->funcs->pSaveDC)
432 ret = dc->funcs->pSaveDC( dc );
433 GDI_ReleaseObj( hdc );
437 if (!(hdcs = GetDCState16( hdc )))
439 GDI_ReleaseObj( hdc );
442 dcs = GDI_GetObjPtr( hdcs, DC_MAGIC );
444 /* Copy path. The reason why path saving / restoring is in SaveDC/
445 * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
446 * functions are only in Win16 (which doesn't have paths) and that
447 * SetDCState doesn't allow us to signal an error (which can happen
448 * when copying paths).
450 if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
452 GDI_ReleaseObj( hdc );
453 GDI_ReleaseObj( hdcs );
458 dcs->header.hNext = dc->header.hNext;
459 dc->header.hNext = hdcs;
460 TRACE("(%04x): returning %d\n", hdc, dc->saveLevel+1 );
461 ret = ++dc->saveLevel;
462 GDI_ReleaseObj( hdcs );
463 GDI_ReleaseObj( hdc );
468 /***********************************************************************
471 BOOL16 WINAPI RestoreDC16( HDC16 hdc, INT16 level )
473 return RestoreDC( hdc, level );
477 /***********************************************************************
478 * RestoreDC (GDI32.@)
480 BOOL WINAPI RestoreDC( HDC hdc, INT level )
485 TRACE("%04x %d\n", hdc, level );
486 dc = DC_GetDCPtr( hdc );
487 if(!dc) return FALSE;
488 if(dc->funcs->pRestoreDC)
490 success = dc->funcs->pRestoreDC( dc, level );
491 GDI_ReleaseObj( hdc );
495 if (level == -1) level = dc->saveLevel;
497 /* This pair of checks disagrees with MSDN "Platform SDK:
498 Windows GDI" July 2000 which says all negative values
499 for level will be interpreted as an instance relative
500 to the current state. Restricting it to just -1 does
502 || (level > dc->saveLevel))
504 GDI_ReleaseObj( hdc );
509 while (dc->saveLevel >= level)
511 HDC16 hdcs = dc->header.hNext;
512 if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC )))
514 GDI_ReleaseObj( hdc );
517 dc->header.hNext = dcs->header.hNext;
518 if (--dc->saveLevel < level)
520 SetDCState16( hdc, hdcs );
521 if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
522 /* FIXME: This might not be quite right, since we're
523 * returning FALSE but still destroying the saved DC state */
526 GDI_ReleaseObj( hdcs );
527 GDI_ReleaseObj( hdc );
529 if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
531 GDI_ReleaseObj( hdc );
536 /***********************************************************************
539 HDC16 WINAPI CreateDC16( LPCSTR driver, LPCSTR device, LPCSTR output,
540 const DEVMODEA *initData )
542 return CreateDCA( driver, device, output, initData );
545 /***********************************************************************
546 * CreateDCA (GDI32.@)
548 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
549 const DEVMODEA *initData )
553 const DC_FUNCTIONS *funcs;
558 if (!device || !DRIVER_GetDriverName( device, buf, sizeof(buf) ))
561 if (!(funcs = DRIVER_load_driver( buf )))
563 ERR( "no driver found for %s\n", buf );
566 if (!(dc = DC_AllocDC( funcs )))
568 DRIVER_release_driver( funcs );
574 TRACE("(driver=%s, device=%s, output=%s): returning %04x\n",
575 debugstr_a(driver), debugstr_a(device), debugstr_a(output), dc->hSelf );
577 if (dc->funcs->pCreateDC &&
578 !dc->funcs->pCreateDC( dc, buf, device, output, initData ))
580 WARN("creation aborted by device\n" );
581 GDI_FreeObject( dc->hSelf, dc );
582 DRIVER_release_driver( funcs );
588 GDI_ReleaseObj( hdc );
593 /***********************************************************************
594 * CreateDCW (GDI32.@)
596 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
597 const DEVMODEW *initData )
599 LPSTR driverA = HEAP_strdupWtoA( GetProcessHeap(), 0, driver );
600 LPSTR deviceA = HEAP_strdupWtoA( GetProcessHeap(), 0, device );
601 LPSTR outputA = HEAP_strdupWtoA( GetProcessHeap(), 0, output );
602 HDC res = CreateDCA( driverA, deviceA, outputA,
603 (const DEVMODEA *)initData /*FIXME*/ );
604 HeapFree( GetProcessHeap(), 0, driverA );
605 HeapFree( GetProcessHeap(), 0, deviceA );
606 HeapFree( GetProcessHeap(), 0, outputA );
611 /***********************************************************************
614 HDC16 WINAPI CreateIC16( LPCSTR driver, LPCSTR device, LPCSTR output,
615 const DEVMODEA* initData )
617 /* Nothing special yet for ICs */
618 return CreateDC16( driver, device, output, initData );
622 /***********************************************************************
623 * CreateICA (GDI32.@)
625 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
626 const DEVMODEA* initData )
628 /* Nothing special yet for ICs */
629 return CreateDCA( driver, device, output, initData );
633 /***********************************************************************
634 * CreateICW (GDI32.@)
636 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
637 const DEVMODEW* initData )
639 /* Nothing special yet for ICs */
640 return CreateDCW( driver, device, output, initData );
644 /***********************************************************************
645 * CreateCompatibleDC (GDI.52)
647 HDC16 WINAPI CreateCompatibleDC16( HDC16 hdc )
649 return (HDC16)CreateCompatibleDC( hdc );
653 /***********************************************************************
654 * CreateCompatibleDC (GDI32.@)
656 HDC WINAPI CreateCompatibleDC( HDC hdc )
659 const DC_FUNCTIONS *funcs;
663 if ((origDC = GDI_GetObjPtr( hdc, DC_MAGIC )))
665 funcs = origDC->funcs;
666 GDI_ReleaseObj( hdc ); /* can't hold the lock while loading the driver */
667 funcs = DRIVER_get_driver( funcs );
669 else funcs = DRIVER_load_driver( "DISPLAY" );
671 if (!funcs) return 0;
673 if (!(dc = DC_AllocDC( funcs )))
675 DRIVER_release_driver( funcs );
679 TRACE("(%04x): returning %04x\n",
682 dc->flags = DC_MEMORY;
683 dc->bitsPerPixel = 1;
684 dc->hBitmap = hPseudoStockBitmap;
686 /* Copy the driver-specific physical device info into
687 * the new DC. The driver may use this read-only info
688 * while creating the compatible DC below. */
689 if ((origDC = GDI_GetObjPtr( hdc, DC_MAGIC ))) dc->physDev = origDC->physDev;
691 if (dc->funcs->pCreateDC &&
692 !dc->funcs->pCreateDC( dc, NULL, NULL, NULL, NULL ))
694 WARN("creation aborted by device\n");
695 GDI_FreeObject( dc->hSelf, dc );
696 if (origDC) GDI_ReleaseObj( hdc );
697 DRIVER_release_driver( funcs );
702 GDI_ReleaseObj( dc->hSelf );
703 if (origDC) GDI_ReleaseObj( hdc );
708 /***********************************************************************
711 BOOL16 WINAPI DeleteDC16( HDC16 hdc )
713 return DeleteDC( hdc );
717 /***********************************************************************
720 BOOL WINAPI DeleteDC( HDC hdc )
722 const DC_FUNCTIONS *funcs = NULL;
725 TRACE("%04x\n", hdc );
729 if (!(dc = GDI_GetObjPtr( hdc, DC_MAGIC ))) return FALSE;
731 /* Call hook procedure to check whether is it OK to delete this DC */
732 if (dc->hookThunk && !(dc->flags & (DC_SAVED | DC_MEMORY)))
734 DCHOOKPROC proc = dc->hookThunk;
737 DWORD data = dc->dwHookData;
738 GDI_ReleaseObj( hdc );
739 if (!proc( hdc, DCHC_DELETEDC, data, 0 )) return FALSE;
740 if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
744 while (dc->saveLevel)
747 HDC16 hdcs = dc->header.hNext;
748 if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
749 dc->header.hNext = dcs->header.hNext;
751 GDI_ReleaseObj( hdcs );
755 if (!(dc->flags & DC_SAVED))
757 SelectObject( hdc, GetStockObject(BLACK_PEN) );
758 SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
759 SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
761 if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc);
764 if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
765 if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
766 if (dc->hGCClipRgn) DeleteObject( dc->hGCClipRgn );
767 if (dc->pAbortProc) THUNK_Free( (FARPROC)dc->pAbortProc );
768 if (dc->hookThunk) THUNK_Free( (FARPROC)dc->hookThunk );
769 PATH_DestroyGdiPath(&dc->path);
771 GDI_FreeObject( hdc, dc );
772 if (funcs) DRIVER_release_driver( funcs ); /* do that after releasing the GDI lock */
777 /***********************************************************************
780 HDC16 WINAPI ResetDC16( HDC16 hdc, const DEVMODEA *devmode )
787 /***********************************************************************
790 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
797 /***********************************************************************
800 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
807 /***********************************************************************
808 * GetDeviceCaps (GDI.80)
810 INT16 WINAPI GetDeviceCaps16( HDC16 hdc, INT16 cap )
812 INT16 ret = GetDeviceCaps( hdc, cap );
813 /* some apps don't expect -1 and think it's a B&W screen */
814 if ((cap == NUMCOLORS) && (ret == -1)) ret = 2048;
819 /***********************************************************************
820 * GetDeviceCaps (GDI32.@)
822 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
827 if ((dc = DC_GetDCPtr( hdc )))
829 if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc, cap );
830 GDI_ReleaseObj( hdc );
836 /***********************************************************************
839 COLORREF WINAPI SetBkColor16( HDC16 hdc, COLORREF color )
841 return SetBkColor( hdc, color );
845 /***********************************************************************
846 * SetBkColor (GDI32.@)
848 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
851 DC * dc = DC_GetDCPtr( hdc );
853 if (!dc) return 0x80000000;
854 if (dc->funcs->pSetBkColor)
855 oldColor = dc->funcs->pSetBkColor(dc, color);
857 oldColor = dc->backgroundColor;
858 dc->backgroundColor = color;
860 GDI_ReleaseObj( hdc );
865 /***********************************************************************
866 * SetTextColor (GDI.9)
868 COLORREF WINAPI SetTextColor16( HDC16 hdc, COLORREF color )
870 return SetTextColor( hdc, color );
874 /***********************************************************************
875 * SetTextColor (GDI32.@)
877 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
880 DC * dc = DC_GetDCPtr( hdc );
882 if (!dc) return 0x80000000;
883 if (dc->funcs->pSetTextColor)
884 oldColor = dc->funcs->pSetTextColor(dc, color);
886 oldColor = dc->textColor;
887 dc->textColor = color;
889 GDI_ReleaseObj( hdc );
893 /***********************************************************************
894 * SetTextAlign (GDI.346)
896 UINT16 WINAPI SetTextAlign16( HDC16 hdc, UINT16 align )
898 return SetTextAlign( hdc, align );
902 /***********************************************************************
903 * SetTextAlign (GDI32.@)
905 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
908 DC *dc = DC_GetDCPtr( hdc );
910 if (dc->funcs->pSetTextAlign)
911 prevAlign = dc->funcs->pSetTextAlign(dc, align);
913 prevAlign = dc->textAlign;
914 dc->textAlign = align;
916 GDI_ReleaseObj( hdc );
920 /***********************************************************************
921 * GetDCOrgEx (GDI32.@)
923 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
927 if (!lpp) return FALSE;
928 if (!(dc = DC_GetDCPtr( hDC ))) return FALSE;
931 if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc, lpp );
932 lpp->x += dc->DCOrgX;
933 lpp->y += dc->DCOrgY;
934 GDI_ReleaseObj( hDC );
939 /***********************************************************************
942 DWORD WINAPI GetDCOrg16( HDC16 hdc )
945 if( GetDCOrgEx( hdc, &pt) )
946 return MAKELONG( (WORD)pt.x, (WORD)pt.y );
951 /***********************************************************************
954 DWORD WINAPI SetDCOrg16( HDC16 hdc, INT16 x, INT16 y )
957 DC *dc = DC_GetDCPtr( hdc );
959 prevOrg = dc->DCOrgX | (dc->DCOrgY << 16);
962 GDI_ReleaseObj( hdc );
967 /***********************************************************************
968 * SetGraphicsMode (GDI32.@)
970 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
973 DC *dc = DC_GetDCPtr( hdc );
975 /* One would think that setting the graphics mode to GM_COMPATIBLE
976 * would also reset the world transformation matrix to the unity
977 * matrix. However, in Windows, this is not the case. This doesn't
978 * make a lot of sense to me, but that's the way it is.
981 if ((mode > 0) || (mode <= GM_LAST))
983 ret = dc->GraphicsMode;
984 dc->GraphicsMode = mode;
986 GDI_ReleaseObj( hdc );
991 /***********************************************************************
992 * SetArcDirection (GDI.525)
994 INT16 WINAPI SetArcDirection16( HDC16 hdc, INT16 nDirection )
996 return SetArcDirection( (HDC)hdc, (INT)nDirection );
1000 /***********************************************************************
1001 * SetArcDirection (GDI32.@)
1003 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1006 INT nOldDirection = 0;
1008 if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1010 SetLastError(ERROR_INVALID_PARAMETER);
1014 if ((dc = DC_GetDCPtr( hdc )))
1016 nOldDirection = dc->ArcDirection;
1017 dc->ArcDirection = nDirection;
1018 GDI_ReleaseObj( hdc );
1020 return nOldDirection;
1024 /***********************************************************************
1025 * GetWorldTransform (GDI32.@)
1027 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1030 if (!xform) return FALSE;
1031 if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
1032 *xform = dc->xformWorld2Wnd;
1033 GDI_ReleaseObj( hdc );
1038 /***********************************************************************
1039 * SetWorldTransform (GDI32.@)
1041 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1044 DC *dc = DC_GetDCPtr( hdc );
1046 if (!dc) return FALSE;
1047 if (!xform) goto done;
1049 /* Check that graphics mode is GM_ADVANCED */
1050 if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1052 dc->xformWorld2Wnd = *xform;
1053 DC_UpdateXforms( dc );
1056 GDI_ReleaseObj( hdc );
1061 /****************************************************************************
1062 * ModifyWorldTransform [GDI32.@]
1063 * Modifies the world transformation for a device context.
1066 * hdc [I] Handle to device context
1067 * xform [I] XFORM structure that will be used to modify the world
1069 * iMode [I] Specifies in what way to modify the world transformation
1072 * Resets the world transformation to the identity matrix.
1073 * The parameter xform is ignored.
1075 * Multiplies xform into the world transformation matrix from
1078 * Multiplies xform into the world transformation matrix from
1083 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1087 DC *dc = DC_GetDCPtr( hdc );
1089 /* Check for illegal parameters */
1090 if (!dc) return FALSE;
1091 if (!xform) goto done;
1093 /* Check that graphics mode is GM_ADVANCED */
1094 if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1099 dc->xformWorld2Wnd.eM11 = 1.0f;
1100 dc->xformWorld2Wnd.eM12 = 0.0f;
1101 dc->xformWorld2Wnd.eM21 = 0.0f;
1102 dc->xformWorld2Wnd.eM22 = 1.0f;
1103 dc->xformWorld2Wnd.eDx = 0.0f;
1104 dc->xformWorld2Wnd.eDy = 0.0f;
1106 case MWT_LEFTMULTIPLY:
1107 CombineTransform( &dc->xformWorld2Wnd, xform,
1108 &dc->xformWorld2Wnd );
1110 case MWT_RIGHTMULTIPLY:
1111 CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1118 DC_UpdateXforms( dc );
1121 GDI_ReleaseObj( hdc );
1126 /****************************************************************************
1127 * CombineTransform [GDI32.@]
1128 * Combines two transformation matrices.
1131 * xformResult [O] Stores the result of combining the two matrices
1132 * xform1 [I] Specifies the first matrix to apply
1133 * xform2 [I] Specifies the second matrix to apply
1136 * The same matrix can be passed in for more than one of the parameters.
1140 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1141 const XFORM *xform2 )
1145 /* Check for illegal parameters */
1146 if (!xformResult || !xform1 || !xform2)
1149 /* Create the result in a temporary XFORM, since xformResult may be
1150 * equal to xform1 or xform2 */
1151 xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1152 xform1->eM12 * xform2->eM21;
1153 xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1154 xform1->eM12 * xform2->eM22;
1155 xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1156 xform1->eM22 * xform2->eM21;
1157 xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1158 xform1->eM22 * xform2->eM22;
1159 xformTemp.eDx = xform1->eDx * xform2->eM11 +
1160 xform1->eDy * xform2->eM21 +
1162 xformTemp.eDy = xform1->eDx * xform2->eM12 +
1163 xform1->eDy * xform2->eM22 +
1166 /* Copy the result to xformResult */
1167 *xformResult = xformTemp;
1173 /***********************************************************************
1174 * SetDCHook (GDI.190)
1177 /* ### start build ### */
1178 extern WORD CALLBACK GDI_CallTo16_word_wwll(FARPROC16,WORD,WORD,LONG,LONG);
1179 /* ### stop build ### */
1181 /**********************************************************************/
1183 BOOL16 WINAPI SetDCHook( HDC16 hdc, FARPROC16 hookProc, DWORD dwHookData )
1185 DC *dc = DC_GetDCPtr( hdc );
1186 if (!dc) return FALSE;
1189 * Note: We store the original SEGPTR 'hookProc' as we need to be
1190 * able to return it verbatim in GetDCHook,
1192 * On the other hand, we still call THUNK_Alloc and store the
1193 * 32-bit thunk into another DC member, because THUNK_Alloc
1194 * recognizes the (typical) case that the 'hookProc' is indeed
1195 * the 16-bit API entry point of a built-in routine (e.g. DCHook16)
1197 * We could perform that test every time the hook is about to
1198 * be called (or else we could live with the 32->16->32 detour),
1199 * but this way is the most efficient ...
1202 dc->hookProc = hookProc;
1203 dc->dwHookData = dwHookData;
1205 THUNK_Free( (FARPROC)dc->hookThunk );
1206 dc->hookThunk = (DCHOOKPROC)
1207 THUNK_Alloc( hookProc, (RELAY)GDI_CallTo16_word_wwll );
1209 GDI_ReleaseObj( hdc );
1214 /***********************************************************************
1215 * GetDCHook (GDI.191)
1217 DWORD WINAPI GetDCHook( HDC16 hdc, FARPROC16 *phookProc )
1219 DC *dc = DC_GetDCPtr( hdc );
1221 *phookProc = dc->hookProc;
1222 GDI_ReleaseObj( hdc );
1223 return dc->dwHookData;
1227 /***********************************************************************
1228 * SetHookFlags (GDI.192)
1230 WORD WINAPI SetHookFlags16(HDC16 hDC, WORD flags)
1232 DC *dc = DC_GetDCPtr( hDC );
1236 WORD wRet = dc->flags & DC_DIRTY;
1238 /* "Undocumented Windows" info is slightly confusing.
1241 TRACE("hDC %04x, flags %04x\n",hDC,flags);
1243 if( flags & DCHF_INVALIDATEVISRGN )
1244 dc->flags |= DC_DIRTY;
1245 else if( flags & DCHF_VALIDATEVISRGN || !flags )
1246 dc->flags &= ~DC_DIRTY;
1247 GDI_ReleaseObj( hDC );
1253 /***********************************************************************
1254 * SetICMMode (GDI32.@)
1256 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1258 /*FIXME Asuming that ICM is always off, and cannot be turned on */
1259 if (iEnableICM == ICM_OFF) return ICM_OFF;
1260 if (iEnableICM == ICM_ON) return 0;
1261 if (iEnableICM == ICM_QUERY) return ICM_OFF;
1265 /***********************************************************************
1266 * GetDeviceGammaRamp (GDI32.@)
1268 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1271 DC *dc = DC_GetDCPtr( hDC );
1275 if (dc->funcs->pGetDeviceGammaRamp)
1276 ret = dc->funcs->pGetDeviceGammaRamp(dc, ptr);
1277 GDI_ReleaseObj( hDC );
1282 /***********************************************************************
1283 * SetDeviceGammaRamp (GDI32.@)
1285 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1288 DC *dc = DC_GetDCPtr( hDC );
1292 if (dc->funcs->pSetDeviceGammaRamp)
1293 ret = dc->funcs->pSetDeviceGammaRamp(dc, ptr);
1294 GDI_ReleaseObj( hDC );
1299 /***********************************************************************
1300 * GetColorSpace (GDI32.@)
1302 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1304 /*FIXME Need to to whatever GetColorSpace actually does */
1308 /***********************************************************************
1309 * CreateColorSpaceA (GDI32.@)
1311 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1317 /***********************************************************************
1318 * CreateColorSpaceW (GDI32.@)
1320 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1326 /***********************************************************************
1327 * DeleteColorSpace (GDI32.@)
1329 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1336 /***********************************************************************
1337 * SetColorSpace (GDI32.@)
1339 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1346 /***********************************************************************
1347 * GetBoundsRect (GDI.194)
1349 UINT16 WINAPI GetBoundsRect16(HDC16 hdc, LPRECT16 rect, UINT16 flags)
1351 return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1354 /***********************************************************************
1355 * GetBoundsRect (GDI32.@)
1357 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1359 FIXME("(): stub\n");
1360 return DCB_RESET; /* bounding rectangle always empty */
1363 /***********************************************************************
1364 * SetBoundsRect (GDI.193)
1366 UINT16 WINAPI SetBoundsRect16(HDC16 hdc, const RECT16* rect, UINT16 flags)
1368 if ( (flags & DCB_ACCUMULATE) || (flags & DCB_ENABLE) )
1369 FIXME("(%04x, %p, %04x): stub\n", hdc, rect, flags );
1371 return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1374 /***********************************************************************
1375 * SetBoundsRect (GDI32.@)
1377 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1379 FIXME("(): stub\n");
1380 return DCB_DISABLE; /* bounding rectangle always empty */
1384 /***********************************************************************
1385 * GetRelAbs (GDI32.@)
1387 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1390 DC *dc = DC_GetDCPtr( hdc );
1391 if (dc) ret = dc->relAbsMode;
1392 GDI_ReleaseObj( hdc );
1396 /***********************************************************************
1399 * Disables GDI, switches back to text mode.
1400 * We don't have to do anything here,
1401 * just let console support handle everything
1403 void WINAPI Death16(HDC16 hDC)
1405 MESSAGE("Death(%04x) called. Application enters text mode...\n", hDC);
1408 /***********************************************************************
1409 * Resurrection (GDI.122)
1411 * Restores GDI functionality
1413 void WINAPI Resurrection16(HDC16 hDC,
1414 WORD w1, WORD w2, WORD w3, WORD w4, WORD w5, WORD w6)
1416 MESSAGE("Resurrection(%04x, %04x, %04x, %04x, %04x, %04x, %04x) called. Application left text mode.\n", hDC, w1, w2, w3, w4, w5, w6);
1419 /***********************************************************************
1420 * GetLayout (GDI32.@)
1422 * Gets left->right or right->left text layout flags of a dc.
1423 * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1426 DWORD WINAPI GetLayout(HDC hdc)
1428 FIXME("(%08x): stub\n", hdc);
1429 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1433 /***********************************************************************
1434 * SetLayout (GDI32.@)
1436 * Sets left->right or right->left text layout flags of a dc.
1437 * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1440 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1442 FIXME("(%08x,%08lx): stub\n", hdc, layout);
1443 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);