Moved error codes to cderr.h.
[wine/multimedia.git] / objects / dc.c
blob32984b03ca1ca762533ffd3d34783e4524b09559
1 /*
2 * GDI Device Context functions
4 * Copyright 1993 Alexandre Julliard
6 */
8 #include "ts_xlib.h"
9 #include "x11drv.h"
11 #include <stdlib.h>
12 #include <string.h>
13 #include "dc.h"
14 #include "gdi.h"
15 #include "heap.h"
16 #include "metafile.h"
17 #include "debug.h"
18 #include "font.h"
19 #include "winerror.h"
20 #include "wine/winuser16.h"
22 /***********************************************************************
23 * DC_Init_DC_INFO
25 * Fill the WIN_DC_INFO structure.
27 static void DC_Init_DC_INFO( WIN_DC_INFO *win_dc_info )
29 win_dc_info->flags = 0;
30 win_dc_info->devCaps = NULL;
31 win_dc_info->hClipRgn = 0;
32 win_dc_info->hVisRgn = 0;
33 win_dc_info->hGCClipRgn = 0;
34 win_dc_info->hPen = STOCK_BLACK_PEN;
35 win_dc_info->hBrush = STOCK_WHITE_BRUSH;
36 win_dc_info->hFont = STOCK_SYSTEM_FONT;
37 win_dc_info->hBitmap = 0;
38 win_dc_info->hFirstBitmap = 0;
39 win_dc_info->hDevice = 0;
40 win_dc_info->hPalette = STOCK_DEFAULT_PALETTE;
41 win_dc_info->ROPmode = R2_COPYPEN;
42 win_dc_info->polyFillMode = ALTERNATE;
43 win_dc_info->stretchBltMode = BLACKONWHITE;
44 win_dc_info->relAbsMode = ABSOLUTE;
45 win_dc_info->backgroundMode = OPAQUE;
46 win_dc_info->backgroundColor = RGB( 255, 255, 255 );
47 win_dc_info->textColor = RGB( 0, 0, 0 );
48 win_dc_info->brushOrgX = 0;
49 win_dc_info->brushOrgY = 0;
50 win_dc_info->textAlign = TA_LEFT | TA_TOP | TA_NOUPDATECP;
51 win_dc_info->charExtra = 0;
52 win_dc_info->breakTotalExtra = 0;
53 win_dc_info->breakCount = 0;
54 win_dc_info->breakExtra = 0;
55 win_dc_info->breakRem = 0;
56 win_dc_info->bitsPerPixel = 1;
57 win_dc_info->MapMode = MM_TEXT;
58 win_dc_info->GraphicsMode = GM_COMPATIBLE;
59 win_dc_info->DCOrgX = 0;
60 win_dc_info->DCOrgY = 0;
61 win_dc_info->lpfnPrint = NULL;
62 win_dc_info->CursPosX = 0;
63 win_dc_info->CursPosY = 0;
64 win_dc_info->ArcDirection = AD_COUNTERCLOCKWISE;
65 win_dc_info->xformWorld2Wnd.eM11 = 1.0f;
66 win_dc_info->xformWorld2Wnd.eM12 = 0.0f;
67 win_dc_info->xformWorld2Wnd.eM21 = 0.0f;
68 win_dc_info->xformWorld2Wnd.eM22 = 1.0f;
69 win_dc_info->xformWorld2Wnd.eDx = 0.0f;
70 win_dc_info->xformWorld2Wnd.eDy = 0.0f;
71 win_dc_info->xformWorld2Vport = win_dc_info->xformWorld2Wnd;
72 win_dc_info->xformVport2World = win_dc_info->xformWorld2Wnd;
73 win_dc_info->vport2WorldValid = TRUE;
75 PATH_InitGdiPath(&win_dc_info->path);
79 /***********************************************************************
80 * DC_AllocDC
82 DC *DC_AllocDC( const DC_FUNCTIONS *funcs )
84 HDC16 hdc;
85 DC *dc;
87 if (!(hdc = GDI_AllocObject( sizeof(DC), DC_MAGIC ))) return NULL;
88 dc = (DC *) GDI_HEAP_LOCK( hdc );
90 dc->hSelf = hdc;
91 dc->funcs = funcs;
92 dc->physDev = NULL;
93 dc->saveLevel = 0;
94 dc->dwHookData = 0L;
95 dc->hookProc = NULL;
96 dc->wndOrgX = 0;
97 dc->wndOrgY = 0;
98 dc->wndExtX = 1;
99 dc->wndExtY = 1;
100 dc->vportOrgX = 0;
101 dc->vportOrgY = 0;
102 dc->vportExtX = 1;
103 dc->vportExtY = 1;
105 DC_Init_DC_INFO( &dc->w );
107 return dc;
112 /***********************************************************************
113 * DC_GetDCPtr
115 DC *DC_GetDCPtr( HDC hdc )
117 GDIOBJHDR *ptr = (GDIOBJHDR *)GDI_HEAP_LOCK( hdc );
118 if (!ptr) return NULL;
119 if ((ptr->wMagic == DC_MAGIC) || (ptr->wMagic == METAFILE_DC_MAGIC))
120 return (DC *)ptr;
121 GDI_HEAP_UNLOCK( hdc );
122 return NULL;
126 /***********************************************************************
127 * DC_InitDC
129 * Setup device-specific DC values for a newly created DC.
131 void DC_InitDC( DC* dc )
133 RealizeDefaultPalette16( dc->hSelf );
134 SetTextColor( dc->hSelf, dc->w.textColor );
135 SetBkColor( dc->hSelf, dc->w.backgroundColor );
136 SelectObject( dc->hSelf, dc->w.hPen );
137 SelectObject( dc->hSelf, dc->w.hBrush );
138 SelectObject( dc->hSelf, dc->w.hFont );
139 CLIPPING_UpdateGCRegion( dc );
143 /***********************************************************************
144 * DC_InvertXform
146 * Computes the inverse of the transformation xformSrc and stores it to
147 * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
148 * is singular.
150 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
152 FLOAT determinant;
154 determinant = xformSrc->eM11*xformSrc->eM22 -
155 xformSrc->eM12*xformSrc->eM21;
156 if (determinant > -1e-12 && determinant < 1e-12)
157 return FALSE;
159 xformDest->eM11 = xformSrc->eM22 / determinant;
160 xformDest->eM12 = -xformSrc->eM12 / determinant;
161 xformDest->eM21 = -xformSrc->eM21 / determinant;
162 xformDest->eM22 = xformSrc->eM11 / determinant;
163 xformDest->eDx = -xformSrc->eDx * xformDest->eM11 -
164 xformSrc->eDy * xformDest->eM21;
165 xformDest->eDy = -xformSrc->eDx * xformDest->eM12 -
166 xformSrc->eDy * xformDest->eM22;
168 return TRUE;
172 /***********************************************************************
173 * DC_UpdateXforms
175 * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
176 * fields of the specified DC by creating a transformation that
177 * represents the current mapping mode and combining it with the DC's
178 * world transform. This function should be called whenever the
179 * parameters associated with the mapping mode (window and viewport
180 * extents and origins) or the world transform change.
182 void DC_UpdateXforms( DC *dc )
184 XFORM xformWnd2Vport;
185 FLOAT scaleX, scaleY;
187 /* Construct a transformation to do the window-to-viewport conversion */
188 scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
189 scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
190 xformWnd2Vport.eM11 = scaleX;
191 xformWnd2Vport.eM12 = 0.0;
192 xformWnd2Vport.eM21 = 0.0;
193 xformWnd2Vport.eM22 = scaleY;
194 xformWnd2Vport.eDx = (FLOAT)dc->vportOrgX -
195 scaleX * (FLOAT)dc->wndOrgX;
196 xformWnd2Vport.eDy = (FLOAT)dc->vportOrgY -
197 scaleY * (FLOAT)dc->wndOrgY;
199 /* Combine with the world transformation */
200 CombineTransform( &dc->w.xformWorld2Vport, &dc->w.xformWorld2Wnd,
201 &xformWnd2Vport );
203 /* Create inverse of world-to-viewport transformation */
204 dc->w.vport2WorldValid = DC_InvertXform( &dc->w.xformWorld2Vport,
205 &dc->w.xformVport2World );
209 /***********************************************************************
210 * GetDCState (GDI.179)
212 HDC16 WINAPI GetDCState16( HDC16 hdc )
214 DC * newdc, * dc;
215 HGDIOBJ16 handle;
217 if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
218 if (!(handle = GDI_AllocObject( sizeof(DC), DC_MAGIC )))
220 GDI_HEAP_UNLOCK( hdc );
221 return 0;
223 newdc = (DC *) GDI_HEAP_LOCK( handle );
225 TRACE(dc, "(%04x): returning %04x\n", hdc, handle );
227 newdc->w.flags = dc->w.flags | DC_SAVED;
228 newdc->w.devCaps = dc->w.devCaps;
229 newdc->w.hPen = dc->w.hPen;
230 newdc->w.hBrush = dc->w.hBrush;
231 newdc->w.hFont = dc->w.hFont;
232 newdc->w.hBitmap = dc->w.hBitmap;
233 newdc->w.hFirstBitmap = dc->w.hFirstBitmap;
234 newdc->w.hDevice = dc->w.hDevice;
235 newdc->w.hPalette = dc->w.hPalette;
236 newdc->w.totalExtent = dc->w.totalExtent;
237 newdc->w.bitsPerPixel = dc->w.bitsPerPixel;
238 newdc->w.ROPmode = dc->w.ROPmode;
239 newdc->w.polyFillMode = dc->w.polyFillMode;
240 newdc->w.stretchBltMode = dc->w.stretchBltMode;
241 newdc->w.relAbsMode = dc->w.relAbsMode;
242 newdc->w.backgroundMode = dc->w.backgroundMode;
243 newdc->w.backgroundColor = dc->w.backgroundColor;
244 newdc->w.textColor = dc->w.textColor;
245 newdc->w.brushOrgX = dc->w.brushOrgX;
246 newdc->w.brushOrgY = dc->w.brushOrgY;
247 newdc->w.textAlign = dc->w.textAlign;
248 newdc->w.charExtra = dc->w.charExtra;
249 newdc->w.breakTotalExtra = dc->w.breakTotalExtra;
250 newdc->w.breakCount = dc->w.breakCount;
251 newdc->w.breakExtra = dc->w.breakExtra;
252 newdc->w.breakRem = dc->w.breakRem;
253 newdc->w.MapMode = dc->w.MapMode;
254 newdc->w.GraphicsMode = dc->w.GraphicsMode;
255 #if 0
256 /* Apparently, the DC origin is not changed by [GS]etDCState */
257 newdc->w.DCOrgX = dc->w.DCOrgX;
258 newdc->w.DCOrgY = dc->w.DCOrgY;
259 #endif
260 newdc->w.CursPosX = dc->w.CursPosX;
261 newdc->w.CursPosY = dc->w.CursPosY;
262 newdc->w.ArcDirection = dc->w.ArcDirection;
263 newdc->w.xformWorld2Wnd = dc->w.xformWorld2Wnd;
264 newdc->w.xformWorld2Vport = dc->w.xformWorld2Vport;
265 newdc->w.xformVport2World = dc->w.xformVport2World;
266 newdc->w.vport2WorldValid = dc->w.vport2WorldValid;
267 newdc->wndOrgX = dc->wndOrgX;
268 newdc->wndOrgY = dc->wndOrgY;
269 newdc->wndExtX = dc->wndExtX;
270 newdc->wndExtY = dc->wndExtY;
271 newdc->vportOrgX = dc->vportOrgX;
272 newdc->vportOrgY = dc->vportOrgY;
273 newdc->vportExtX = dc->vportExtX;
274 newdc->vportExtY = dc->vportExtY;
276 newdc->hSelf = (HDC)handle;
277 newdc->saveLevel = 0;
279 PATH_InitGdiPath( &newdc->w.path );
281 /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
283 newdc->w.hGCClipRgn = newdc->w.hVisRgn = 0;
284 if (dc->w.hClipRgn)
286 newdc->w.hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
287 CombineRgn( newdc->w.hClipRgn, dc->w.hClipRgn, 0, RGN_COPY );
289 else
290 newdc->w.hClipRgn = 0;
291 GDI_HEAP_UNLOCK( handle );
292 GDI_HEAP_UNLOCK( hdc );
293 return handle;
297 /***********************************************************************
298 * SetDCState (GDI.180)
300 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
302 DC *dc, *dcs;
304 if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
305 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC )))
307 GDI_HEAP_UNLOCK( hdc );
308 return;
310 if (!dcs->w.flags & DC_SAVED)
312 GDI_HEAP_UNLOCK( hdc );
313 GDI_HEAP_UNLOCK( hdcs );
314 return;
316 TRACE(dc, "%04x %04x\n", hdc, hdcs );
318 dc->w.flags = dcs->w.flags & ~DC_SAVED;
319 dc->w.devCaps = dcs->w.devCaps;
320 dc->w.hFirstBitmap = dcs->w.hFirstBitmap;
321 dc->w.hDevice = dcs->w.hDevice;
322 dc->w.totalExtent = dcs->w.totalExtent;
323 dc->w.ROPmode = dcs->w.ROPmode;
324 dc->w.polyFillMode = dcs->w.polyFillMode;
325 dc->w.stretchBltMode = dcs->w.stretchBltMode;
326 dc->w.relAbsMode = dcs->w.relAbsMode;
327 dc->w.backgroundMode = dcs->w.backgroundMode;
328 dc->w.backgroundColor = dcs->w.backgroundColor;
329 dc->w.textColor = dcs->w.textColor;
330 dc->w.brushOrgX = dcs->w.brushOrgX;
331 dc->w.brushOrgY = dcs->w.brushOrgY;
332 dc->w.textAlign = dcs->w.textAlign;
333 dc->w.charExtra = dcs->w.charExtra;
334 dc->w.breakTotalExtra = dcs->w.breakTotalExtra;
335 dc->w.breakCount = dcs->w.breakCount;
336 dc->w.breakExtra = dcs->w.breakExtra;
337 dc->w.breakRem = dcs->w.breakRem;
338 dc->w.MapMode = dcs->w.MapMode;
339 dc->w.GraphicsMode = dcs->w.GraphicsMode;
340 #if 0
341 /* Apparently, the DC origin is not changed by [GS]etDCState */
342 dc->w.DCOrgX = dcs->w.DCOrgX;
343 dc->w.DCOrgY = dcs->w.DCOrgY;
344 #endif
345 dc->w.CursPosX = dcs->w.CursPosX;
346 dc->w.CursPosY = dcs->w.CursPosY;
347 dc->w.ArcDirection = dcs->w.ArcDirection;
348 dc->w.xformWorld2Wnd = dcs->w.xformWorld2Wnd;
349 dc->w.xformWorld2Vport = dcs->w.xformWorld2Vport;
350 dc->w.xformVport2World = dcs->w.xformVport2World;
351 dc->w.vport2WorldValid = dcs->w.vport2WorldValid;
353 dc->wndOrgX = dcs->wndOrgX;
354 dc->wndOrgY = dcs->wndOrgY;
355 dc->wndExtX = dcs->wndExtX;
356 dc->wndExtY = dcs->wndExtY;
357 dc->vportOrgX = dcs->vportOrgX;
358 dc->vportOrgY = dcs->vportOrgY;
359 dc->vportExtX = dcs->vportExtX;
360 dc->vportExtY = dcs->vportExtY;
362 if (!(dc->w.flags & DC_MEMORY)) dc->w.bitsPerPixel = dcs->w.bitsPerPixel;
364 if (dcs->w.hClipRgn)
366 if (!dc->w.hClipRgn) dc->w.hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
367 CombineRgn( dc->w.hClipRgn, dcs->w.hClipRgn, 0, RGN_COPY );
369 else
371 if (dc->w.hClipRgn) DeleteObject16( dc->w.hClipRgn );
372 dc->w.hClipRgn = 0;
374 CLIPPING_UpdateGCRegion( dc );
376 SelectObject( hdc, dcs->w.hBitmap );
377 SelectObject( hdc, dcs->w.hBrush );
378 SelectObject( hdc, dcs->w.hFont );
379 SelectObject( hdc, dcs->w.hPen );
380 SetBkColor( hdc, dcs->w.backgroundColor);
381 SetTextColor( hdc, dcs->w.textColor);
382 GDISelectPalette16( hdc, dcs->w.hPalette, FALSE );
383 GDI_HEAP_UNLOCK( hdc );
384 GDI_HEAP_UNLOCK( hdcs );
388 /***********************************************************************
389 * SaveDC16 (GDI.30)
391 INT16 WINAPI SaveDC16( HDC16 hdc )
393 return (INT16)SaveDC( hdc );
397 /***********************************************************************
398 * SaveDC32 (GDI32.292)
400 INT WINAPI SaveDC( HDC hdc )
402 HDC hdcs;
403 DC * dc, * dcs;
404 INT ret;
406 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
407 if (!dc)
409 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
410 if (!dc) return 0;
411 MF_MetaParam0(dc, META_SAVEDC);
412 GDI_HEAP_UNLOCK( hdc );
413 return 1; /* ?? */
415 if (!(hdcs = GetDCState16( hdc )))
417 GDI_HEAP_UNLOCK( hdc );
418 return 0;
420 dcs = (DC *) GDI_HEAP_LOCK( hdcs );
422 /* Copy path. The reason why path saving / restoring is in SaveDC/
423 * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
424 * functions are only in Win16 (which doesn't have paths) and that
425 * SetDCState doesn't allow us to signal an error (which can happen
426 * when copying paths).
428 if (!PATH_AssignGdiPath( &dcs->w.path, &dc->w.path ))
430 GDI_HEAP_UNLOCK( hdc );
431 GDI_HEAP_UNLOCK( hdcs );
432 DeleteDC( hdcs );
433 return 0;
436 dcs->header.hNext = dc->header.hNext;
437 dc->header.hNext = hdcs;
438 TRACE(dc, "(%04x): returning %d\n", hdc, dc->saveLevel+1 );
439 ret = ++dc->saveLevel;
440 GDI_HEAP_UNLOCK( hdcs );
441 GDI_HEAP_UNLOCK( hdc );
442 return ret;
446 /***********************************************************************
447 * RestoreDC16 (GDI.39)
449 BOOL16 WINAPI RestoreDC16( HDC16 hdc, INT16 level )
451 return RestoreDC( hdc, level );
455 /***********************************************************************
456 * RestoreDC32 (GDI32.290)
458 BOOL WINAPI RestoreDC( HDC hdc, INT level )
460 DC * dc, * dcs;
461 BOOL success;
463 TRACE(dc, "%04x %d\n", hdc, level );
464 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
465 if (!dc)
467 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
468 if (!dc) return FALSE;
469 if (level != -1)
471 GDI_HEAP_UNLOCK( hdc );
472 return FALSE;
474 MF_MetaParam1(dc, META_RESTOREDC, level);
475 GDI_HEAP_UNLOCK( hdc );
476 return TRUE;
478 if (level == -1) level = dc->saveLevel;
479 if ((level < 1) || (level > dc->saveLevel))
481 GDI_HEAP_UNLOCK( hdc );
482 return FALSE;
485 success=TRUE;
486 while (dc->saveLevel >= level)
488 HDC16 hdcs = dc->header.hNext;
489 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC )))
491 GDI_HEAP_UNLOCK( hdc );
492 return FALSE;
494 dc->header.hNext = dcs->header.hNext;
495 if (--dc->saveLevel < level)
497 SetDCState16( hdc, hdcs );
498 if (!PATH_AssignGdiPath( &dc->w.path, &dcs->w.path ))
499 /* FIXME: This might not be quite right, since we're
500 * returning FALSE but still destroying the saved DC state */
501 success=FALSE;
503 DeleteDC( hdcs );
505 GDI_HEAP_UNLOCK( hdc );
506 return success;
510 /***********************************************************************
511 * CreateDC16 (GDI.53)
513 HDC16 WINAPI CreateDC16( LPCSTR driver, LPCSTR device, LPCSTR output,
514 const DEVMODE16 *initData )
516 DC * dc;
517 const DC_FUNCTIONS *funcs;
519 if (!(funcs = DRIVER_FindDriver( driver ))) return 0;
520 if (!(dc = DC_AllocDC( funcs ))) return 0;
521 dc->w.flags = 0;
523 TRACE(dc, "(driver=%s, device=%s, output=%s): returning %04x\n",
524 debugstr_a(driver), debugstr_a(device), debugstr_a(output), dc->hSelf );
526 if (dc->funcs->pCreateDC &&
527 !dc->funcs->pCreateDC( dc, driver, device, output, initData ))
529 WARN(dc, "creation aborted by device\n" );
530 GDI_HEAP_FREE( dc->hSelf );
531 return 0;
534 DC_InitDC( dc );
535 GDI_HEAP_UNLOCK( dc->hSelf );
536 return dc->hSelf;
540 /***********************************************************************
541 * CreateDC32A (GDI32.)
543 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
544 const DEVMODEA *initData )
546 return CreateDC16( driver, device, output, (const DEVMODE16 *)initData );
550 /***********************************************************************
551 * CreateDC32W (GDI32.)
553 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
554 const DEVMODEW *initData )
556 LPSTR driverA = HEAP_strdupWtoA( GetProcessHeap(), 0, driver );
557 LPSTR deviceA = HEAP_strdupWtoA( GetProcessHeap(), 0, device );
558 LPSTR outputA = HEAP_strdupWtoA( GetProcessHeap(), 0, output );
559 HDC res = CreateDC16( driverA, deviceA, outputA,
560 (const DEVMODE16 *)initData /*FIXME*/ );
561 HeapFree( GetProcessHeap(), 0, driverA );
562 HeapFree( GetProcessHeap(), 0, deviceA );
563 HeapFree( GetProcessHeap(), 0, outputA );
564 return res;
568 /***********************************************************************
569 * CreateIC16 (GDI.153)
571 HDC16 WINAPI CreateIC16( LPCSTR driver, LPCSTR device, LPCSTR output,
572 const DEVMODE16* initData )
574 /* Nothing special yet for ICs */
575 return CreateDC16( driver, device, output, initData );
579 /***********************************************************************
580 * CreateIC32A (GDI32.49)
582 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
583 const DEVMODEA* initData )
585 /* Nothing special yet for ICs */
586 return CreateDCA( driver, device, output, initData );
590 /***********************************************************************
591 * CreateIC32W (GDI32.50)
593 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
594 const DEVMODEW* initData )
596 /* Nothing special yet for ICs */
597 return CreateDCW( driver, device, output, initData );
601 /***********************************************************************
602 * CreateCompatibleDC16 (GDI.52)
604 HDC16 WINAPI CreateCompatibleDC16( HDC16 hdc )
606 return (HDC16)CreateCompatibleDC( hdc );
610 /***********************************************************************
611 * CreateCompatibleDC32 (GDI32.31)
613 HDC WINAPI CreateCompatibleDC( HDC hdc )
615 DC *dc, *origDC;
616 HBITMAP hbitmap;
617 const DC_FUNCTIONS *funcs;
619 if ((origDC = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC ))) funcs = origDC->funcs;
620 else funcs = DRIVER_FindDriver( "DISPLAY" );
621 if (!funcs) return 0;
623 if (!(dc = DC_AllocDC( funcs ))) return 0;
625 TRACE(dc, "(%04x): returning %04x\n",
626 hdc, dc->hSelf );
628 /* Create default bitmap */
629 if (!(hbitmap = CreateBitmap( 1, 1, 1, 1, NULL )))
631 GDI_HEAP_FREE( dc->hSelf );
632 return 0;
634 dc->w.flags = DC_MEMORY;
635 dc->w.bitsPerPixel = 1;
636 dc->w.hBitmap = hbitmap;
637 dc->w.hFirstBitmap = hbitmap;
639 if (dc->funcs->pCreateDC &&
640 !dc->funcs->pCreateDC( dc, NULL, NULL, NULL, NULL ))
642 WARN(dc, "creation aborted by device\n");
643 DeleteObject( hbitmap );
644 GDI_HEAP_FREE( dc->hSelf );
645 return 0;
648 DC_InitDC( dc );
649 GDI_HEAP_UNLOCK( dc->hSelf );
650 return dc->hSelf;
654 /***********************************************************************
655 * DeleteDC16 (GDI.68)
657 BOOL16 WINAPI DeleteDC16( HDC16 hdc )
659 return DeleteDC( hdc );
663 /***********************************************************************
664 * DeleteDC32 (GDI32.67)
666 BOOL WINAPI DeleteDC( HDC hdc )
668 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
669 if (!dc) return FALSE;
671 TRACE(dc, "%04x\n", hdc );
673 while (dc->saveLevel)
675 DC * dcs;
676 HDC16 hdcs = dc->header.hNext;
677 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
678 dc->header.hNext = dcs->header.hNext;
679 dc->saveLevel--;
680 DeleteDC( hdcs );
683 if (!(dc->w.flags & DC_SAVED))
685 SelectObject( hdc, STOCK_BLACK_PEN );
686 SelectObject( hdc, STOCK_WHITE_BRUSH );
687 SelectObject( hdc, STOCK_SYSTEM_FONT );
688 if (dc->w.flags & DC_MEMORY) DeleteObject( dc->w.hFirstBitmap );
689 if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc);
692 if (dc->w.hClipRgn) DeleteObject( dc->w.hClipRgn );
693 if (dc->w.hVisRgn) DeleteObject( dc->w.hVisRgn );
694 if (dc->w.hGCClipRgn) DeleteObject( dc->w.hGCClipRgn );
696 PATH_DestroyGdiPath(&dc->w.path);
698 return GDI_FreeObject( hdc );
702 /***********************************************************************
703 * ResetDC16 (GDI.376)
705 HDC16 WINAPI ResetDC16( HDC16 hdc, const DEVMODE16 *devmode )
707 FIXME(dc, "stub\n" );
708 return hdc;
712 /***********************************************************************
713 * ResetDC32A (GDI32.287)
715 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
717 FIXME(dc, "stub\n" );
718 return hdc;
722 /***********************************************************************
723 * ResetDC32W (GDI32.288)
725 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
727 FIXME(dc, "stub\n" );
728 return hdc;
732 /***********************************************************************
733 * GetDeviceCaps16 (GDI.80)
735 INT16 WINAPI GetDeviceCaps16( HDC16 hdc, INT16 cap )
737 return GetDeviceCaps( hdc, cap );
741 /***********************************************************************
742 * GetDeviceCaps32 (GDI32.171)
744 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
746 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
747 INT ret;
749 if (!dc) return 0;
751 if ((cap < 0) || (cap > sizeof(DeviceCaps)-sizeof(WORD)))
753 GDI_HEAP_UNLOCK( hdc );
754 return 0;
757 TRACE(dc, "(%04x,%d): returning %d\n",
758 hdc, cap, *(WORD *)(((char *)dc->w.devCaps) + cap) );
759 ret = *(WORD *)(((char *)dc->w.devCaps) + cap);
760 GDI_HEAP_UNLOCK( hdc );
761 return ret;
765 /***********************************************************************
766 * SetBkColor16 (GDI.1)
768 COLORREF WINAPI SetBkColor16( HDC16 hdc, COLORREF color )
770 return SetBkColor( hdc, color );
774 /***********************************************************************
775 * SetBkColor32 (GDI32.305)
777 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
779 COLORREF oldColor;
780 DC * dc = DC_GetDCPtr( hdc );
782 if (!dc) return 0x80000000;
783 if (dc->funcs->pSetBkColor)
784 oldColor = dc->funcs->pSetBkColor(dc, color);
785 else {
786 oldColor = dc->w.backgroundColor;
787 dc->w.backgroundColor = color;
789 GDI_HEAP_UNLOCK( hdc );
790 return oldColor;
794 /***********************************************************************
795 * SetTextColor16 (GDI.9)
797 COLORREF WINAPI SetTextColor16( HDC16 hdc, COLORREF color )
799 return SetTextColor( hdc, color );
803 /***********************************************************************
804 * SetTextColor32 (GDI32.338)
806 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
808 COLORREF oldColor;
809 DC * dc = DC_GetDCPtr( hdc );
811 if (!dc) return 0x80000000;
812 if (dc->funcs->pSetTextColor)
813 oldColor = dc->funcs->pSetTextColor(dc, color);
814 else {
815 oldColor = dc->w.textColor;
816 dc->w.textColor = color;
818 GDI_HEAP_UNLOCK( hdc );
819 return oldColor;
823 /***********************************************************************
824 * SetTextAlign16 (GDI.346)
826 UINT16 WINAPI SetTextAlign16( HDC16 hdc, UINT16 textAlign )
828 return SetTextAlign( hdc, textAlign );
832 /***********************************************************************
833 * SetTextAlign32 (GDI32.336)
835 UINT WINAPI SetTextAlign( HDC hdc, UINT textAlign )
837 UINT prevAlign;
838 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
839 if (!dc)
841 if (!(dc = (DC *)GDI_GetObjPtr( hdc, METAFILE_DC_MAGIC ))) return 0;
842 MF_MetaParam1( dc, META_SETTEXTALIGN, textAlign );
843 GDI_HEAP_UNLOCK( hdc );
844 return 1;
846 prevAlign = dc->w.textAlign;
847 dc->w.textAlign = textAlign;
848 GDI_HEAP_UNLOCK( hdc );
849 return prevAlign;
853 /***********************************************************************
854 * GetDCOrgEx (GDI32.168)
856 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
858 DC * dc;
859 X11DRV_PDEVICE *physDev;
861 if (!lpp) return FALSE;
862 if (!(dc = (DC *) GDI_GetObjPtr( hDC, DC_MAGIC ))) return FALSE;
863 physDev = (X11DRV_PDEVICE *)dc->physDev;
865 if (!(dc->w.flags & DC_MEMORY))
867 Window root;
868 int w, h, border, depth;
869 /* FIXME: this is not correct for managed windows */
870 TSXGetGeometry( display, physDev->drawable, &root,
871 (int*)&lpp->x, (int*)&lpp->y, &w, &h, &border, &depth );
873 else lpp->x = lpp->y = 0;
874 lpp->x += dc->w.DCOrgX; lpp->y += dc->w.DCOrgY;
875 GDI_HEAP_UNLOCK( hDC );
876 return TRUE;
880 /***********************************************************************
881 * GetDCOrg (GDI.79)
883 DWORD WINAPI GetDCOrg16( HDC16 hdc )
885 POINT pt;
886 if( GetDCOrgEx( hdc, &pt) )
887 return MAKELONG( (WORD)pt.x, (WORD)pt.y );
888 return 0;
892 /***********************************************************************
893 * SetDCOrg (GDI.117)
895 DWORD WINAPI SetDCOrg16( HDC16 hdc, INT16 x, INT16 y )
897 DWORD prevOrg;
898 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
899 if (!dc) return 0;
900 prevOrg = dc->w.DCOrgX | (dc->w.DCOrgY << 16);
901 dc->w.DCOrgX = x;
902 dc->w.DCOrgY = y;
903 GDI_HEAP_UNLOCK( hdc );
904 return prevOrg;
908 /***********************************************************************
909 * GetGraphicsMode (GDI32.188)
911 INT WINAPI GetGraphicsMode( HDC hdc )
913 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
914 if (!dc) return 0;
915 return dc->w.GraphicsMode;
919 /***********************************************************************
920 * SetGraphicsMode (GDI32.317)
922 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
924 INT ret;
925 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
927 /* One would think that setting the graphics mode to GM_COMPATIBLE
928 * would also reset the world transformation matrix to the unity
929 * matrix. However, in Windows, this is not the case. This doesn't
930 * make a lot of sense to me, but that's the way it is.
933 if (!dc) return 0;
934 if ((mode <= 0) || (mode > GM_LAST)) return 0;
935 ret = dc->w.GraphicsMode;
936 dc->w.GraphicsMode = mode;
937 return ret;
941 /***********************************************************************
942 * GetArcDirection16 (GDI.524)
944 INT16 WINAPI GetArcDirection16( HDC16 hdc )
946 return GetArcDirection( (HDC)hdc );
950 /***********************************************************************
951 * GetArcDirection32 (GDI32.141)
953 INT WINAPI GetArcDirection( HDC hdc )
955 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
957 if (!dc)
958 return 0;
960 return dc->w.ArcDirection;
964 /***********************************************************************
965 * SetArcDirection16 (GDI.525)
967 INT16 WINAPI SetArcDirection16( HDC16 hdc, INT16 nDirection )
969 return SetArcDirection( (HDC)hdc, (INT)nDirection );
973 /***********************************************************************
974 * SetArcDirection32 (GDI32.302)
976 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
978 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
979 INT nOldDirection;
981 if (!dc)
982 return 0;
984 if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
986 SetLastError(ERROR_INVALID_PARAMETER);
987 return 0;
990 nOldDirection = dc->w.ArcDirection;
991 dc->w.ArcDirection = nDirection;
993 return nOldDirection;
997 /***********************************************************************
998 * GetWorldTransform (GDI32.244)
1000 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1002 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1004 if (!dc)
1005 return FALSE;
1006 if (!xform)
1007 return FALSE;
1009 *xform = dc->w.xformWorld2Wnd;
1011 return TRUE;
1015 /***********************************************************************
1016 * SetWorldTransform (GDI32.346)
1018 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1020 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1022 if (!dc)
1024 SetLastError( ERROR_INVALID_HANDLE );
1025 return FALSE;
1028 if (!xform)
1029 return FALSE;
1031 /* Check that graphics mode is GM_ADVANCED */
1032 if (dc->w.GraphicsMode!=GM_ADVANCED)
1033 return FALSE;
1035 dc->w.xformWorld2Wnd = *xform;
1037 DC_UpdateXforms( dc );
1039 return TRUE;
1043 /****************************************************************************
1044 * ModifyWorldTransform [GDI32.253]
1045 * Modifies the world transformation for a device context.
1047 * PARAMS
1048 * hdc [I] Handle to device context
1049 * xform [I] XFORM structure that will be used to modify the world
1050 * transformation
1051 * iMode [I] Specifies in what way to modify the world transformation
1052 * Possible values:
1053 * MWT_IDENTITY
1054 * Resets the world transformation to the identity matrix.
1055 * The parameter xform is ignored.
1056 * MWT_LEFTMULTIPLY
1057 * Multiplies xform into the world transformation matrix from
1058 * the left.
1059 * MWT_RIGHTMULTIPLY
1060 * Multiplies xform into the world transformation matrix from
1061 * the right.
1063 * RETURNS STD
1065 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1066 DWORD iMode )
1068 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1070 /* Check for illegal parameters */
1071 if (!dc)
1073 SetLastError( ERROR_INVALID_HANDLE );
1074 return FALSE;
1076 if (!xform)
1077 return FALSE;
1079 /* Check that graphics mode is GM_ADVANCED */
1080 if (dc->w.GraphicsMode!=GM_ADVANCED)
1081 return FALSE;
1083 switch (iMode)
1085 case MWT_IDENTITY:
1086 dc->w.xformWorld2Wnd.eM11 = 1.0f;
1087 dc->w.xformWorld2Wnd.eM12 = 0.0f;
1088 dc->w.xformWorld2Wnd.eM21 = 0.0f;
1089 dc->w.xformWorld2Wnd.eM22 = 1.0f;
1090 dc->w.xformWorld2Wnd.eDx = 0.0f;
1091 dc->w.xformWorld2Wnd.eDy = 0.0f;
1092 break;
1093 case MWT_LEFTMULTIPLY:
1094 CombineTransform( &dc->w.xformWorld2Wnd, xform,
1095 &dc->w.xformWorld2Wnd );
1096 break;
1097 case MWT_RIGHTMULTIPLY:
1098 CombineTransform( &dc->w.xformWorld2Wnd, &dc->w.xformWorld2Wnd,
1099 xform );
1100 break;
1101 default:
1102 return FALSE;
1105 DC_UpdateXforms( dc );
1107 return TRUE;
1111 /****************************************************************************
1112 * CombineTransform [GDI32.20]
1113 * Combines two transformation matrices.
1115 * PARAMS
1116 * xformResult [O] Stores the result of combining the two matrices
1117 * xform1 [I] Specifies the first matrix to apply
1118 * xform2 [I] Specifies the second matrix to apply
1120 * REMARKS
1121 * The same matrix can be passed in for more than one of the parameters.
1123 * RETURNS STD
1125 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1126 const XFORM *xform2 )
1128 XFORM xformTemp;
1130 /* Check for illegal parameters */
1131 if (!xformResult || !xform1 || !xform2)
1132 return FALSE;
1134 /* Create the result in a temporary XFORM, since xformResult may be
1135 * equal to xform1 or xform2 */
1136 xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1137 xform1->eM12 * xform2->eM21;
1138 xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1139 xform1->eM12 * xform2->eM22;
1140 xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1141 xform1->eM22 * xform2->eM21;
1142 xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1143 xform1->eM22 * xform2->eM22;
1144 xformTemp.eDx = xform1->eDx * xform2->eM11 +
1145 xform1->eDy * xform2->eM21 +
1146 xform2->eDx;
1147 xformTemp.eDy = xform1->eDx * xform2->eM12 +
1148 xform1->eDy * xform2->eM22 +
1149 xform2->eDy;
1151 /* Copy the result to xformResult */
1152 *xformResult = xformTemp;
1154 return TRUE;
1158 /***********************************************************************
1159 * SetDCHook (GDI.190)
1161 BOOL16 WINAPI SetDCHook( HDC16 hdc, FARPROC16 hookProc, DWORD dwHookData )
1163 DC *dc = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC );
1165 TRACE(dc, "hookProc %08x, default is %08x\n",
1166 (UINT)hookProc, (UINT)DCHook16 );
1168 if (!dc) return FALSE;
1169 dc->hookProc = hookProc;
1170 dc->dwHookData = dwHookData;
1171 GDI_HEAP_UNLOCK( hdc );
1172 return TRUE;
1176 /***********************************************************************
1177 * GetDCHook (GDI.191)
1179 DWORD WINAPI GetDCHook( HDC16 hdc, FARPROC16 *phookProc )
1181 DC *dc = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC );
1182 if (!dc) return 0;
1183 *phookProc = dc->hookProc;
1184 GDI_HEAP_UNLOCK( hdc );
1185 return dc->dwHookData;
1189 /***********************************************************************
1190 * SetHookFlags (GDI.192)
1192 WORD WINAPI SetHookFlags16(HDC16 hDC, WORD flags)
1194 DC* dc = (DC*)GDI_GetObjPtr( hDC, DC_MAGIC );
1196 if( dc )
1198 WORD wRet = dc->w.flags & DC_DIRTY;
1200 /* "Undocumented Windows" info is slightly confusing.
1203 TRACE(dc,"hDC %04x, flags %04x\n",hDC,flags);
1205 if( flags & DCHF_INVALIDATEVISRGN )
1206 dc->w.flags |= DC_DIRTY;
1207 else if( flags & DCHF_VALIDATEVISRGN || !flags )
1208 dc->w.flags &= ~DC_DIRTY;
1209 GDI_HEAP_UNLOCK( hDC );
1210 return wRet;
1212 return 0;
1215 /***********************************************************************
1216 * SetICMMode (GDI32.318)
1218 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1220 /*FIXME Asuming that ICM is always off, and cannot be turned on */
1221 if (iEnableICM == ICM_OFF) return ICM_OFF;
1222 if (iEnableICM == ICM_ON) return 0;
1223 if (iEnableICM == ICM_QUERY) return ICM_OFF;
1224 return 0;
1228 /***********************************************************************
1229 * GetColorSpace (GDI32.165)
1231 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1233 /*FIXME Need to to whatever GetColorSpace actually does */
1234 return 0;
1237 /***********************************************************************
1238 * GetBoundsRect16 (GDI.194)
1240 UINT16 WINAPI GetBoundsRect16(HDC16 hdc, LPRECT16 rect, UINT16 flags)
1242 return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1245 /***********************************************************************
1246 * GetBoundsRect32 (GDI32.147)
1248 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1250 FIXME(dc, "(): stub\n");
1251 return DCB_RESET; /* bounding rectangle always empty */
1254 /***********************************************************************
1255 * SetBoundsRect16 (GDI.193)
1257 UINT16 WINAPI SetBoundsRect16(HDC16 hdc, const RECT16* rect, UINT16 flags)
1259 if ( (flags & DCB_ACCUMULATE) || (flags & DCB_ENABLE) )
1260 FIXME( dc, "(%04x, %p, %04x): stub\n", hdc, rect, flags );
1262 return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1265 /***********************************************************************
1266 * SetBoundsRect32 (GDI32.307)
1268 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1270 FIXME(dc, "(): stub\n");
1271 return DCB_DISABLE; /* bounding rectangle always empty */
1274 /***********************************************************************
1275 * Death (GDI.121)
1277 * Disables GDI, switches back to text mode.
1278 * We don't have to do anything here,
1279 * just let console support handle everything
1281 void WINAPI Death16(HDC16 hDC)
1283 MSG("Death(%04x) called. Application enters text mode...\n", hDC);
1286 /***********************************************************************
1287 * Resurrection (GDI.122)
1289 * Restores GDI functionality
1291 void WINAPI Resurrection16(HDC16 hDC,
1292 WORD w1, WORD w2, WORD w3, WORD w4, WORD w5, WORD w6)
1294 MSG("Resurrection(%04x, %04x, %04x, %04x, %04x, %04x, %04x) called. Application left text mode.\n", hDC, w1, w2, w3, w4, w5, w6);