ReactOS  0.4.15-dev-5120-gfb68e76
path.c
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1 /*
2  * PROJECT: ReactOS win32 kernel mode subsystem
3  * LICENSE: GPL - See COPYING in the top level directory
4  * FILE: win32ss/gdi/ntgdi/path.c
5  * PURPOSE: Graphics paths (BeginPath, EndPath etc.)
6  * PROGRAMMER: Copyright 1997, 1998 Martin Boehme
7  * 1999 Huw D M Davies
8  * 2005 Dmitry Timoshkov
9  * 2018 Katayama Hirofumi MZ
10  */
11 
12 #include <win32k.h>
13 #include <suppress.h>
14 
15 DBG_DEFAULT_CHANNEL(GdiPath);
16 
17 #ifdef _MSC_VER
18 #pragma warning(disable:4244)
19 #endif
20 
21 #define NUM_ENTRIES_INITIAL 16 /* Initial size of points / flags arrays */
22 
23 #define GROW_FACTOR_NUMER 2 /* Numerator of grow factor for the array */
24 #define GROW_FACTOR_DENOM 1 /* Denominator of grow factor */
25 
26 #if DBG
27 static int PathCount = 0;
28 #endif
29 
30 /***********************************************************************
31  * Internal functions
32  */
33 
36 {
38 
39  if (!pPath)
40  {
42  return NULL;
43  }
44 
45  TRACE("CreatePath p 0x%p\n", pPath);
46  // Path handles are shared. Also due to recursion with in the same thread.
47  GDIOBJ_vUnlockObject((POBJ)pPath); // Unlock
48  pPath = PATH_LockPath(pPath->BaseObject.hHmgr); // Share Lock.
49 
50  /* Make sure that path is empty */
51  PATH_EmptyPath(pPath);
52 
54 
55  pPath->numEntriesAllocated = count;
56 
57  pPath->pPoints = (POINT *)ExAllocatePoolWithTag(PagedPool, count * sizeof(POINT), TAG_PATH);
58  RtlZeroMemory( pPath->pPoints, count * sizeof(POINT));
59  pPath->pFlags = (BYTE *)ExAllocatePoolWithTag(PagedPool, count * sizeof(BYTE), TAG_PATH);
60  RtlZeroMemory( pPath->pFlags, count * sizeof(BYTE));
61 
62  /* Initialize variables for new path */
63  pPath->numEntriesUsed = 0;
64  pPath->newStroke = TRUE;
65  pPath->state = PATH_Open;
66  pPath->pos.x = pPath->pos.y = 0;
67 #if DBG
68  PathCount++;
69  TRACE("Create Path %d\n",PathCount);
70 #endif
71  return pPath;
72 }
73 
74 /* PATH_DestroyGdiPath
75  *
76  * Destroys a GdiPath structure (frees the memory in the arrays).
77  */
78 VOID
81 {
82  ASSERT(pPath != NULL);
83 
84  if (pPath->pPoints) ExFreePoolWithTag(pPath->pPoints, TAG_PATH);
85  if (pPath->pFlags) ExFreePoolWithTag(pPath->pFlags, TAG_PATH);
86 }
87 
88 BOOL
91 {
92  PPATH pPath;
93  if (!hPath) return FALSE;
94  pPath = PATH_LockPath(hPath);
95  if (!pPath) return FALSE;
96  PATH_DestroyGdiPath(pPath);
98 #if DBG
99  PathCount--;
100  TRACE("Delete Path %d\n",PathCount);
101 #endif
102  return TRUE;
103 }
104 
105 
106 VOID
107 FASTCALL
109 {
110  ASSERT(pPath->state == PATH_Open);
111 
112  // FIXME: Shouldn't we draw a line to the beginning of the figure?
113  // Set PT_CLOSEFIGURE on the last entry and start a new stroke
114  if (pPath->numEntriesUsed)
115  {
116  pPath->pFlags[pPath->numEntriesUsed - 1] |= PT_CLOSEFIGURE;
117  pPath->newStroke = TRUE;
118  }
119 }
120 
121 /* MSDN: This fails if the device coordinates exceed 27 bits, or if the converted
122  logical coordinates exceed 32 bits. */
123 BOOL
124 FASTCALL
126  PDC pdc,
127  PPOINT ppt,
128  INT count)
129 {
130  XFORMOBJ xo;
131 
132  XFORMOBJ_vInit(&xo, &pdc->pdcattr->mxDeviceToWorld);
133  return XFORMOBJ_bApplyXform(&xo, XF_LTOL, count, (PPOINTL)ppt, (PPOINTL)ppt);
134 }
135 
136 /* PATH_InitGdiPath
137  *
138  * Initializes the GdiPath structure.
139  */
140 VOID
141 FASTCALL
143  PPATH pPath)
144 {
145  ASSERT(pPath != NULL);
146 
147  pPath->state = PATH_Null;
148  pPath->pPoints = NULL;
149  pPath->pFlags = NULL;
150  pPath->numEntriesUsed = 0;
151  pPath->numEntriesAllocated = 0;
152 }
153 
154 /* PATH_AssignGdiPath
155  *
156  * Copies the GdiPath structure "pPathSrc" to "pPathDest". A deep copy is
157  * performed, i.e. the contents of the pPoints and pFlags arrays are copied,
158  * not just the pointers. Since this means that the arrays in pPathDest may
159  * need to be resized, pPathDest should have been initialized using
160  * PATH_InitGdiPath (in C++, this function would be an assignment operator,
161  * not a copy constructor).
162  * Returns TRUE if successful, else FALSE.
163  */
164 BOOL
165 FASTCALL
167  PPATH pPathDest,
168  const PPATH pPathSrc)
169 {
170  ASSERT(pPathDest != NULL && pPathSrc != NULL);
171 
172  /* Make sure destination arrays are big enough */
173  if (!PATH_ReserveEntries(pPathDest, pPathSrc->numEntriesUsed))
174  return FALSE;
175 
176  /* Perform the copy operation */
177  memcpy(pPathDest->pPoints, pPathSrc->pPoints, sizeof(POINT)*pPathSrc->numEntriesUsed);
178  memcpy(pPathDest->pFlags, pPathSrc->pFlags, sizeof(BYTE)*pPathSrc->numEntriesUsed);
179 
180  pPathDest->pos = pPathSrc->pos;
181  pPathDest->state = pPathSrc->state;
182  pPathDest->numEntriesUsed = pPathSrc->numEntriesUsed;
183  pPathDest->newStroke = pPathSrc->newStroke;
184  return TRUE;
185 }
186 
188 {
189  PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
190  TRACE("PATH_SavePath\n");
191  if (psrcPath)
192  {
193  TRACE("PATH_SavePath 1\n");
194 
195  pdstPath = PATH_CreatePath(psrcPath->numEntriesAllocated);
196 
197  dst->dclevel.flPath = src->dclevel.flPath;
198 
199  dst->dclevel.hPath = pdstPath->BaseObject.hHmgr;
200 
201  PATH_AssignGdiPath(pdstPath, psrcPath);
202 
203  PATH_UnlockPath(pdstPath);
204  PATH_UnlockPath(psrcPath);
205  }
206  return TRUE;
207 }
208 
210 {
211  TRACE("PATH_RestorePath\n");
212 
213  if (dst->dclevel.hPath == NULL)
214  {
215  PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
216  TRACE("PATH_RestorePath 1\n");
217  pdstPath = PATH_CreatePath(psrcPath->numEntriesAllocated);
218  dst->dclevel.flPath = src->dclevel.flPath;
219  dst->dclevel.hPath = pdstPath->BaseObject.hHmgr;
220 
221  PATH_AssignGdiPath(pdstPath, psrcPath);
222 
223  PATH_UnlockPath(pdstPath);
224  PATH_UnlockPath(psrcPath);
225  }
226  else
227  {
228  PPATH pdstPath, psrcPath = PATH_LockPath(src->dclevel.hPath);
229  pdstPath = PATH_LockPath(dst->dclevel.hPath);
230  TRACE("PATH_RestorePath 2\n");
231  dst->dclevel.flPath = src->dclevel.flPath & (DCPATH_CLOCKWISE|DCPATH_ACTIVE);
232  PATH_AssignGdiPath(pdstPath, psrcPath);
233 
234  PATH_UnlockPath(pdstPath);
235  PATH_UnlockPath(psrcPath);
236  }
237  return TRUE;
238 }
239 
240 /* PATH_EmptyPath
241  *
242  * Removes all entries from the path and sets the path state to PATH_Null.
243  */
244 VOID
245 FASTCALL
247 {
248  ASSERT(pPath != NULL);
249 
250  pPath->state = PATH_Null;
251  pPath->numEntriesUsed = 0;
252 }
253 
254 /* PATH_AddEntry
255  *
256  * Adds an entry to the path. For "flags", pass either PT_MOVETO, PT_LINETO
257  * or PT_BEZIERTO, optionally ORed with PT_CLOSEFIGURE. Returns TRUE if
258  * successful, FALSE otherwise (e.g. if not enough memory was available).
259  */
260 BOOL
261 FASTCALL
263  PPATH pPath,
264  const POINT *pPoint,
265  BYTE flags)
266 {
267  ASSERT(pPath != NULL);
268 
269  /* FIXME: If newStroke is true, perhaps we want to check that we're
270  * getting a PT_MOVETO
271  */
272  TRACE("(%d,%d) - %d\n", pPoint->x, pPoint->y, flags);
273 
274  /* Reserve enough memory for an extra path entry */
275  if (!PATH_ReserveEntries(pPath, pPath->numEntriesUsed + 1))
276  return FALSE;
277 
278  /* Store information in path entry */
279  pPath->pPoints[pPath->numEntriesUsed] = *pPoint;
280  pPath->pFlags[pPath->numEntriesUsed] = flags;
281 
282  /* Increment entry count */
283  pPath->numEntriesUsed++;
284 
285  return TRUE;
286 }
287 
288 /* PATH_ReserveEntries
289  *
290  * Ensures that at least "numEntries" entries (for points and flags) have
291  * been allocated; allocates larger arrays and copies the existing entries
292  * to those arrays, if necessary. Returns TRUE if successful, else FALSE.
293  */
294 BOOL
295 FASTCALL
297  PPATH pPath,
298  INT numEntries)
299 {
300  INT numEntriesToAllocate;
301  POINT *pPointsNew;
302  BYTE *pFlagsNew;
303 
304  ASSERT(pPath != NULL);
305  ASSERT(numEntries >= 0);
306 
307  /* Do we have to allocate more memory? */
308  if (numEntries > pPath->numEntriesAllocated)
309  {
310  /* Find number of entries to allocate. We let the size of the array
311  * grow exponentially, since that will guarantee linear time
312  * complexity. */
313  if (pPath->numEntriesAllocated)
314  {
315  numEntriesToAllocate = pPath->numEntriesAllocated;
316  while (numEntriesToAllocate < numEntries)
317  numEntriesToAllocate = numEntriesToAllocate * GROW_FACTOR_NUMER / GROW_FACTOR_DENOM;
318  }
319  else
320  numEntriesToAllocate = numEntries;
321 
322  /* Allocate new arrays */
323  pPointsNew = (POINT *)ExAllocatePoolWithTag(PagedPool, numEntriesToAllocate * sizeof(POINT), TAG_PATH);
324  if (!pPointsNew)
325  return FALSE;
326 
327  pFlagsNew = (BYTE *)ExAllocatePoolWithTag(PagedPool, numEntriesToAllocate * sizeof(BYTE), TAG_PATH);
328  if (!pFlagsNew)
329  {
330  ExFreePoolWithTag(pPointsNew, TAG_PATH);
331  return FALSE;
332  }
333 
334  /* Copy old arrays to new arrays and discard old arrays */
335  if (pPath->pPoints)
336  {
337  ASSERT(pPath->pFlags);
338 
339  memcpy(pPointsNew, pPath->pPoints, sizeof(POINT)*pPath->numEntriesUsed);
340  memcpy(pFlagsNew, pPath->pFlags, sizeof(BYTE)*pPath->numEntriesUsed);
341 
344  }
345 
346  pPath->pPoints = pPointsNew;
347  pPath->pFlags = pFlagsNew;
348  pPath->numEntriesAllocated = numEntriesToAllocate;
349  }
350 
351  return TRUE;
352 }
353 
354 /* PATH_ScaleNormalizedPoint
355  *
356  * Scales a normalized point (x, y) with respect to the box whose corners are
357  * passed in "corners". The point is stored in "*pPoint". The normalized
358  * coordinates (-1.0, -1.0) correspond to corners[0], the coordinates
359  * (1.0, 1.0) correspond to corners[1].
360  */
361 static
362 BOOLEAN
364  POINT corners[],
365  FLOATL x,
366  FLOATL y,
367  POINT *pPoint)
368 {
369  FLOATOBJ tmp;
370 
371  ASSERT(corners);
372  ASSERT(pPoint);
373 
374  /* pPoint->x = (double)corners[0].x + (double)(corners[1].x - corners[0].x) * 0.5 * (x + 1.0); */
375  FLOATOBJ_SetFloat(&tmp, x);
376  FLOATOBJ_Add(&tmp, (FLOATOBJ*)&gef1);
377  FLOATOBJ_Div(&tmp, (FLOATOBJ*)&gef2);
378  FLOATOBJ_MulLong(&tmp, corners[1].x - corners[0].x);
379  FLOATOBJ_AddLong(&tmp, corners[0].x);
380  if (!FLOATOBJ_bConvertToLong(&tmp, &pPoint->x))
381  return FALSE;
382 
383  /* pPoint->y = (double)corners[0].y + (double)(corners[1].y - corners[0].y) * 0.5 * (y + 1.0); */
384  FLOATOBJ_SetFloat(&tmp, y);
385  FLOATOBJ_Add(&tmp, (FLOATOBJ*)&gef1);
386  FLOATOBJ_Div(&tmp, (FLOATOBJ*)&gef2);
387  FLOATOBJ_MulLong(&tmp, corners[1].y - corners[0].y);
388  FLOATOBJ_AddLong(&tmp, corners[0].y);
389  if (!FLOATOBJ_bConvertToLong(&tmp, &pPoint->y))
390  return FALSE;
391  return TRUE;
392 }
393 
394 /* PATH_NormalizePoint
395  *
396  * Normalizes a point with respect to the box whose corners are passed in
397  * corners. The normalized coordinates are stored in *pX and *pY.
398  */
399 static
400 VOID
402  POINTL corners[],
403  const POINTL *pPoint,
404  FLOATL *pX,
405  FLOATL *pY)
406 {
407  FLOATOBJ tmp;
408 
409  ASSERT(corners);
410  ASSERT(pPoint);
411  ASSERT(pX);
412  ASSERT(pY);
413 
414  /* *pX = (float)(pPoint->x - corners[0].x) / (float)(corners[1].x - corners[0].x) * 2.0 - 1.0; */
415  FLOATOBJ_SetLong(&tmp, (pPoint->x - corners[0].x) * 2);
416  FLOATOBJ_DivLong(&tmp, corners[1].x - corners[0].x);
417  FLOATOBJ_Sub(&tmp, (PFLOATOBJ)&gef1);
418  *pX = FLOATOBJ_GetFloat(&tmp);
419 
420  /* *pY = (float)(pPoint->y - corners[0].y) / (float)(corners[1].y - corners[0].y) * 2.0 - 1.0; */
421  FLOATOBJ_SetLong(&tmp, (pPoint->y - corners[0].y) * 2);
422  FLOATOBJ_DivLong(&tmp, corners[1].y - corners[0].y);
423  FLOATOBJ_Sub(&tmp, (PFLOATOBJ)&gef1);
424  *pY = FLOATOBJ_GetFloat(&tmp);
425 }
426 
427 /* PATH_CheckCorners
428  *
429  * Helper function for PATH_RoundRect() and PATH_Rectangle()
430  */
431 static
432 BOOL
434  DC *dc,
435  RECTL* rect,
436  INT x1,
437  INT y1,
438  INT x2,
439  INT y2)
440 {
441  PDC_ATTR pdcattr = dc->pdcattr;
442 
443  /* Convert points to device coordinates */
444  RECTL_vSetRect(rect, x1, y1, x2, y2);
445  IntLPtoDP(dc, (PPOINT)rect, 2);
446 
447  /* Make sure first corner is top left and second corner is bottom right */
449 
450  /* In GM_COMPATIBLE, don't include bottom and right edges */
451  if (pdcattr->iGraphicsMode == GM_COMPATIBLE)
452  {
453  if (rect->left == rect->right) return FALSE;
454  if (rect->top == rect->bottom) return FALSE;
455  rect->right--;
456  rect->bottom--;
457  }
458  return TRUE;
459 }
460 
461 /* add a number of points, converting them to device coords */
462 /* return a pointer to the first type byte so it can be fixed up if necessary */
464  DWORD count, BYTE type )
465 {
466  BYTE *ret;
467 
468  if (!PATH_ReserveEntries( path, path->numEntriesUsed + count )) return NULL;
469 
470  ret = &path->pFlags[path->numEntriesUsed];
471  memcpy( &path->pPoints[path->numEntriesUsed], points, count * sizeof(*points) );
472  IntLPtoDP( dc, &path->pPoints[path->numEntriesUsed], count );
473  memset( ret, type, count );
474  path->numEntriesUsed += count;
475  return ret;
476 }
477 
478 /* add a number of points that are already in device coords */
479 /* return a pointer to the first type byte so it can be fixed up if necessary */
481 {
482  BYTE *ret;
483 
484  if (!PATH_ReserveEntries( path, path->numEntriesUsed + count )) return NULL;
485 
486  ret = &path->pFlags[path->numEntriesUsed];
487  memcpy( &path->pPoints[path->numEntriesUsed], points, count * sizeof(*points) );
488  memset( ret, type, count );
489  path->numEntriesUsed += count;
490  return ret;
491 }
492 
493 /* reverse the order of an array of points */
495 {
496  UINT i;
497  for (i = 0; i < count / 2; i++)
498  {
499  POINT pt = points[i];
500  points[i] = points[count - i - 1];
501  points[count - i - 1] = pt;
502  }
503 }
504 
505 /* start a new path stroke if necessary */
507 {
508  if (!path->newStroke && path->numEntriesUsed &&
509  !(path->pFlags[path->numEntriesUsed - 1] & PT_CLOSEFIGURE) &&
510  path->pPoints[path->numEntriesUsed - 1].x == path->pos.x &&
511  path->pPoints[path->numEntriesUsed - 1].y == path->pos.y)
512  return TRUE;
513 
514  path->newStroke = FALSE;
515  return add_points( path, &path->pos, 1, PT_MOVETO ) != NULL;
516 }
517 
518 /* set current position to the last point that was added to the path */
520 {
521  ASSERT(path->numEntriesUsed);
522  path->pos = path->pPoints[path->numEntriesUsed - 1];
523 }
524 
525 /* close the current figure */
526 static void close_figure( PPATH path )
527 {
528  ASSERT(path->numEntriesUsed);
529  path->pFlags[path->numEntriesUsed - 1] |= PT_CLOSEFIGURE;
530 }
531 
532 /* add a number of points, starting a new stroke if necessary */
534  DWORD count, BYTE type )
535 {
536  if (!start_new_stroke( path )) return FALSE;
537  if (!add_log_points( dc, path, points, count, type )) return FALSE;
539 
540  TRACE("ALPNS : Pos X %d Y %d\n",path->pos.x, path->pos.y);
541  IntGdiMoveToEx(dc, path->pos.x, path->pos.y, NULL);
542 
543  return TRUE;
544 }
545 
546 /* PATH_MoveTo
547  *
548  * Should be called when a MoveTo is performed on a DC that has an
549  * open path. This starts a new stroke. Returns TRUE if successful, else
550  * FALSE.
551  */
552 BOOL
553 FASTCALL
555  PDC dc,
556  PPATH pPath)
557 {
558  if (!pPath) return FALSE;
559 
560  // GDI32 : Signal from user space of a change in position.
561  if (dc->pdcattr->ulDirty_ & DIRTY_STYLESTATE)
562  {
563  TRACE("MoveTo has changed\n");
564  pPath->newStroke = TRUE;
565  // Set position and clear the signal flag.
566  IntGetCurrentPositionEx(dc, &pPath->pos);
567  IntLPtoDP( dc, &pPath->pos, 1 );
568  return TRUE;
569  }
570 
571  return FALSE;
572 }
573 
574 /* PATH_LineTo
575  *
576  * Should be called when a LineTo is performed on a DC that has an
577  * open path. This adds a PT_LINETO entry to the path (and possibly
578  * a PT_MOVETO entry, if this is the first LineTo in a stroke).
579  * Returns TRUE if successful, else FALSE.
580  */
581 BOOL
582 FASTCALL
584  PDC dc,
585  INT x,
586  INT y)
587 {
588  BOOL Ret;
589  PPATH pPath;
590  POINT point, pointCurPos;
591 
592  pPath = PATH_LockPath(dc->dclevel.hPath);
593  if (!pPath) return FALSE;
594 
595  point.x = x;
596  point.y = y;
597 
598  // Coalesce a MoveTo point.
599  if ( !PATH_MoveTo(dc, pPath) )
600  {
601  /* Add a PT_MOVETO if necessary */
602  if (pPath->newStroke)
603  {
604  TRACE("Line To : New Stroke\n");
605  pPath->newStroke = FALSE;
606  IntGetCurrentPositionEx(dc, &pointCurPos);
607  CoordLPtoDP(dc, &pointCurPos);
608  if (!PATH_AddEntry(pPath, &pointCurPos, PT_MOVETO))
609  {
610  PATH_UnlockPath(pPath);
611  return FALSE;
612  }
613  }
614  }
615  Ret = add_log_points_new_stroke( dc, pPath, &point, 1, PT_LINETO );
616  PATH_UnlockPath(pPath);
617  return Ret;
618 }
619 
620 /* PATH_Rectangle
621  *
622  * Should be called when a call to Rectangle is performed on a DC that has
623  * an open path. Returns TRUE if successful, else FALSE.
624  */
625 BOOL
626 FASTCALL
628  PDC dc,
629  INT x1,
630  INT y1,
631  INT x2,
632  INT y2)
633 {
634  PPATH pPath;
635  RECTL rect;
636  POINTL points[4];
637  BYTE *type;
638 
639  pPath = PATH_LockPath(dc->dclevel.hPath);
640  if (!pPath) return FALSE;
641 
642  if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
643  {
644  PATH_UnlockPath(pPath);
645  return TRUE;
646  }
647 
648  points[0].x = rect.right; points[0].y = rect.top;
649  points[1].x = rect.left; points[1].y = rect.top;
650  points[2].x = rect.left; points[2].y = rect.bottom;
651  points[3].x = rect.right; points[3].y = rect.bottom;
652 
653  if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points(points, 4 );
654 
655  if (!(type = add_points( pPath, points, 4, PT_LINETO )))
656  {
657  PATH_UnlockPath(pPath);
658  return FALSE;
659  }
660  type[0] = PT_MOVETO;
661 
662  /* Close the rectangle figure */
663  IntGdiCloseFigure(pPath) ;
664  PATH_UnlockPath(pPath);
665  return TRUE;
666 }
667 
668 /* PATH_RoundRect
669  *
670  * Should be called when a call to RoundRect is performed on a DC that has
671  * an open path. Returns TRUE if successful, else FALSE.
672  *
673  */
674 BOOL
676  DC *dc,
677  INT x1,
678  INT y1,
679  INT x2,
680  INT y2,
681  INT ell_width,
682  INT ell_height)
683 {
684  PPATH pPath;
685  RECTL rect, ellipse;
686  POINT points[16];
687  BYTE *type;
689 
690  if (!ell_width || !ell_height) return PATH_Rectangle( dc, x1, y1, x2, y2 );
691 
692  pPath = PATH_LockPath(dc->dclevel.hPath);
693  if (!pPath) return FALSE;
694 
695  if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
696  {
697  PATH_UnlockPath(pPath);
698  return TRUE;
699  }
700 
701  RECTL_vSetRect(&ellipse, 0, 0, ell_width, ell_height);
702  IntLPtoDP( dc, (PPOINT)&ellipse, 2 );
703  RECTL_vMakeWellOrdered(&ellipse);
704  ell_width = min(RECTL_lGetWidth(&ellipse), RECTL_lGetWidth(&rect));
705  ell_height = min(RECTL_lGetHeight(&ellipse), RECTL_lGetHeight(&rect));
706 
707  /*
708  * See here to understand what's happening
709  * https://stackoverflow.com/questions/1734745/how-to-create-circle-with-b%C3%A9zier-curves
710  */
711  xOffset = EngMulDiv(ell_width, 44771525, 200000000); /* w * (1 - 0.5522847) / 2 */
712  yOffset = EngMulDiv(ell_height, 44771525, 200000000); /* h * (1 - 0.5522847) / 2 */
713  TRACE("xOffset %d, yOffset %d, Rect WxH: %dx%d.\n",
715 
716  /*
717  * Get half width & height.
718  * Do not use integer division, we need the rounding made by EngMulDiv.
719  */
720  ell_width = EngMulDiv(ell_width, 1, 2);
721  ell_height = EngMulDiv(ell_height, 1, 2);
722 
723  /* starting point */
724  points[0].x = rect.right;
725  points[0].y = rect.top + ell_height;
726  /* first curve */
727  points[1].x = rect.right;
728  points[1].y = rect.top + yOffset;
729  points[2].x = rect.right - xOffset;
730  points[2].y = rect.top;
731  points[3].x = rect.right - ell_width;
732  points[3].y = rect.top;
733  /* horizontal line */
734  points[4].x = rect.left + ell_width;
735  points[4].y = rect.top;
736  /* second curve */
737  points[5].x = rect.left + xOffset;
738  points[5].y = rect.top;
739  points[6].x = rect.left;
740  points[6].y = rect.top + yOffset;
741  points[7].x = rect.left;
742  points[7].y = rect.top + ell_height;
743  /* vertical line */
744  points[8].x = rect.left;
745  points[8].y = rect.bottom - ell_height;
746  /* third curve */
747  points[9].x = rect.left;
748  points[9].y = rect.bottom - yOffset;
749  points[10].x = rect.left + xOffset;
750  points[10].y = rect.bottom;
751  points[11].x = rect.left + ell_width;
752  points[11].y = rect.bottom;
753  /* horizontal line */
754  points[12].x = rect.right - ell_width;
755  points[12].y = rect.bottom;
756  /* fourth curve */
757  points[13].x = rect.right - xOffset;
758  points[13].y = rect.bottom;
759  points[14].x = rect.right;
760  points[14].y = rect.bottom - yOffset;
761  points[15].x = rect.right;
762  points[15].y = rect.bottom - ell_height;
763 
764  if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points( points, 16 );
765  if (!(type = add_points( pPath, points, 16, PT_BEZIERTO )))
766  {
767  PATH_UnlockPath(pPath);
768  return FALSE;
769  }
770  type[0] = PT_MOVETO;
771  type[4] = type[8] = type[12] = PT_LINETO;
772 
773  IntGdiCloseFigure(pPath);
774  PATH_UnlockPath(pPath);
775  return TRUE;
776 }
777 
778 /* PATH_Ellipse
779  *
780  */
781 BOOL
783  PDC dc,
784  INT x1,
785  INT y1,
786  INT x2,
787  INT y2)
788 {
789  PPATH pPath;
790  POINT points[13];
791  RECTL rect;
792  BYTE *type;
793  LONG xRadius, yRadius, xOffset, yOffset;
795 
796  TRACE("PATH_Ellipse: %p -> (%d, %d) - (%d, %d)\n",
797  dc, x1, y1, x2, y2);
798 
799  if (!PATH_CheckRect(dc, &rect, x1, y1, x2, y2))
800  {
801  return TRUE;
802  }
803 
804  xRadius = RECTL_lGetWidth(&rect) / 2;
805  yRadius = RECTL_lGetHeight(&rect) / 2;
806 
807  /* Get the four points which box our ellipse */
808  left.x = rect.left; left.y = rect.top + yRadius;
809  top.x = rect.left + xRadius; top.y = rect.top;
810  right.x = rect.right; right.y = rect.bottom - yRadius;
811  bottom.x = rect.right - xRadius; bottom.y = rect.bottom;
812 
813  /*
814  * See here to understand what's happening
815  * https://stackoverflow.com/questions/1734745/how-to-create-circle-with-b%C3%A9zier-curves
816  */
817  xOffset = EngMulDiv(RECTL_lGetWidth(&rect), 55428475, 200000000); /* w * 0.55428475 / 2 */
818  yOffset = EngMulDiv(RECTL_lGetHeight(&rect), 55428475, 200000000); /* h * 0.55428475 / 2 */
819  TRACE("xOffset %d, yOffset %d, Rect WxH: %dx%d.\n",
821 
822  pPath = PATH_LockPath(dc->dclevel.hPath);
823  if (!pPath)
824  return FALSE;
825 
826  /* Starting point: Right */
827  points[0] = right;
828 
829  /* first curve - going up, left */
830  points[1] = right;
831  points[1].y -= yOffset;
832  points[2] = top;
833  points[2].x += xOffset;
834 
835  /* top */
836  points[3] = top;
837 
838  /* second curve - going left, down*/
839  points[4] = top;
840  points[4].x -= xOffset;
841  points[5] = left;
842  points[5].y -= yOffset;
843 
844  /* Left */
845  points[6] = left;
846 
847  /* Third curve - going down, right */
848  points[7] = left;
849  points[7].y += yOffset;
850  points[8] = bottom;
851  points[8].x -= xOffset;
852 
853  /* bottom */
854  points[9] = bottom;
855 
856  /* Fourth curve - Going right, up */
857  points[10] = bottom;
858  points[10].x += xOffset;
859  points[11] = right;
860  points[11].y += yOffset;
861 
862  /* Back to starting point */
863  points[12] = right;
864 
865  if (dc->dclevel.flPath & DCPATH_CLOCKWISE) reverse_points( points, 13 );
866  if (!(type = add_points( pPath, points, 13, PT_BEZIERTO )))
867  {
868  ERR("PATH_Ellipse No add\n");
869  PATH_UnlockPath(pPath);
870  return FALSE;
871  }
872  type[0] = PT_MOVETO;
873 
874  IntGdiCloseFigure(pPath);
875  PATH_UnlockPath(pPath);
876  return TRUE;
877 }
878 
879 /* PATH_DoArcPart
880  *
881  * Creates a Bezier spline that corresponds to part of an arc and appends the
882  * corresponding points to the path. The start and end angles are passed in
883  * "angleStart" and "angleEnd"; these angles should span a quarter circle
884  * at most. If "startEntryType" is non-zero, an entry of that type for the first
885  * control point is added to the path; otherwise, it is assumed that the current
886  * position is equal to the first control point.
887  */
888 static
889 BOOL
891  PPATH pPath,
892  POINT corners[],
893  double angleStart,
894  double angleEnd,
895  BYTE startEntryType)
896 {
897  double halfAngle, a;
898  float xNorm[4], yNorm[4];
899  POINT points[4];
900  BYTE *type;
901  int i, start;
902 
903  ASSERT(fabs(angleEnd - angleStart) <= M_PI_2);
904 
905  /* FIXME: Is there an easier way of computing this? */
906 
907  /* Compute control points */
908  halfAngle = (angleEnd - angleStart) / 2.0;
909  if (fabs(halfAngle) > 1e-8)
910  {
911  a = 4.0 / 3.0 * (1 - cos(halfAngle)) / sin(halfAngle);
912  xNorm[0] = cos(angleStart);
913  yNorm[0] = sin(angleStart);
914  xNorm[1] = xNorm[0] - a * yNorm[0];
915  yNorm[1] = yNorm[0] + a * xNorm[0];
916  xNorm[3] = cos(angleEnd);
917  yNorm[3] = sin(angleEnd);
918  xNorm[2] = xNorm[3] + a * yNorm[3];
919  yNorm[2] = yNorm[3] - a * xNorm[3];
920  }
921  else
922  for (i = 0; i < 4; i++)
923  {
924  xNorm[i] = cos(angleStart);
925  yNorm[i] = sin(angleStart);
926  }
927 
928  /* Add starting point to path if desired */
929  start = !startEntryType;
930 
931  /* Add remaining control points */
932  for (i = start; i < 4; i++)
933  {
934  if (!PATH_ScaleNormalizedPoint(corners, *(FLOATL*)&xNorm[i], *(FLOATL*)&yNorm[i], &points[i]))
935  return FALSE;
936  }
937  if (!(type = add_points( pPath, points + start, 4 - start, PT_BEZIERTO ))) return FALSE;
938  if (!start) type[0] = startEntryType;
939 
940  return TRUE;
941 }
942 
943 /* PATH_Arc
944  *
945  * Should be called when a call to Arc is performed on a DC that has
946  * an open path. This adds up to five Bezier splines representing the arc
947  * to the path. When 'lines' is 1, we add 1 extra line to get a chord,
948  * when 'lines' is 2, we add 2 extra lines to get a pie, and when 'lines' is
949  * -1 we add 1 extra line from the current DC position to the starting position
950  * of the arc before drawing the arc itself (arcto). Returns TRUE if successful,
951  * else FALSE.
952  */
953 BOOL
954 FASTCALL
956  PDC dc,
957  INT x1,
958  INT y1,
959  INT x2,
960  INT y2,
961  INT xStart,
962  INT yStart,
963  INT xEnd,
964  INT yEnd,
965  INT direction,
966  INT lines)
967 {
968  double angleStart, angleEnd, angleStartQuadrant, angleEndQuadrant = 0.0;
969  /* Initialize angleEndQuadrant to silence gcc's warning */
970  FLOATL x, y;
971  POINT corners[2], pointStart, pointEnd;
972  POINT centre, pointCurPos;
973  BOOL start, end, Ret = TRUE;
974  INT temp;
975  BOOL clockwise;
976  PPATH pPath;
977 
978  /* FIXME: This function should check for all possible error returns */
979  /* FIXME: Do we have to respect newStroke? */
980 
981  ASSERT(dc);
982 
983  pPath = PATH_LockPath(dc->dclevel.hPath);
984  if (!pPath) return FALSE;
985 
986  if (direction)
987  clockwise = ((direction == AD_CLOCKWISE) !=0 );
988  else
989  clockwise = ((dc->dclevel.flPath & DCPATH_CLOCKWISE) != 0);
990 
991  /* Check for zero height / width */
992  /* FIXME: Only in GM_COMPATIBLE? */
993  if (x1 == x2 || y1 == y2)
994  {
995  Ret = TRUE;
996  goto ArcExit;
997  }
998  /* Convert points to device coordinates */
999  corners[0].x = x1; corners[0].y = y1;
1000  corners[1].x = x2; corners[1].y = y2;
1001  pointStart.x = xStart; pointStart.y = yStart;
1002  pointEnd.x = xEnd; pointEnd.y = yEnd;
1003  INTERNAL_LPTODP(dc, corners, 2);
1004  INTERNAL_LPTODP(dc, &pointStart, 1);
1005  INTERNAL_LPTODP(dc, &pointEnd, 1);
1006 
1007  /* Make sure first corner is top left and second corner is bottom right */
1008  if (corners[0].x > corners[1].x)
1009  {
1010  temp = corners[0].x;
1011  corners[0].x = corners[1].x;
1012  corners[1].x = temp;
1013  }
1014  if (corners[0].y > corners[1].y)
1015  {
1016  temp = corners[0].y;
1017  corners[0].y = corners[1].y;
1018  corners[1].y = temp;
1019  }
1020 
1021  /* Compute start and end angle */
1022  PATH_NormalizePoint(corners, &pointStart, &x, &y);
1023  angleStart = atan2(*(FLOAT*)&y, *(FLOAT*)&x);
1024  PATH_NormalizePoint(corners, &pointEnd, &x, &y);
1025  angleEnd = atan2(*(FLOAT*)&y, *(FLOAT*)&x);
1026 
1027  /* Make sure the end angle is "on the right side" of the start angle */
1028  if (clockwise)
1029  {
1030  if (angleEnd <= angleStart)
1031  {
1032  angleEnd += 2 * M_PI;
1033  ASSERT(angleEnd >= angleStart);
1034  }
1035  }
1036  else
1037  {
1038  if (angleEnd >= angleStart)
1039  {
1040  angleEnd -= 2 * M_PI;
1041  ASSERT(angleEnd <= angleStart);
1042  }
1043  }
1044 
1045  /* In GM_COMPATIBLE, don't include bottom and right edges */
1046  if (dc->pdcattr->iGraphicsMode == GM_COMPATIBLE)
1047  {
1048  corners[1].x--;
1049  corners[1].y--;
1050  }
1051 
1052  /* arcto: Add a PT_MOVETO only if this is the first entry in a stroke */
1053  if (lines == GdiTypeArcTo && pPath->newStroke) // -1
1054  {
1055  pPath->newStroke = FALSE;
1056  IntGetCurrentPositionEx(dc, &pointCurPos);
1057  CoordLPtoDP(dc, &pointCurPos);
1058  if (!PATH_AddEntry(pPath, &pointCurPos, PT_MOVETO))
1059  {
1060  Ret = FALSE;
1061  goto ArcExit;
1062  }
1063  }
1064 
1065  /* Add the arc to the path with one Bezier spline per quadrant that the
1066  * arc spans */
1067  start = TRUE;
1068  end = FALSE;
1069  do
1070  {
1071  /* Determine the start and end angles for this quadrant */
1072  if (start)
1073  {
1074  angleStartQuadrant = angleStart;
1075  if (clockwise)
1076  angleEndQuadrant = (floor(angleStart / M_PI_2) + 1.0) * M_PI_2;
1077  else
1078  angleEndQuadrant = (ceil(angleStart / M_PI_2) - 1.0) * M_PI_2;
1079  }
1080  else
1081  {
1082  angleStartQuadrant = angleEndQuadrant;
1083  if (clockwise)
1084  angleEndQuadrant += M_PI_2;
1085  else
1086  angleEndQuadrant -= M_PI_2;
1087  }
1088 
1089  /* Have we reached the last part of the arc? */
1090  if ((clockwise && angleEnd < angleEndQuadrant) ||
1091  (!clockwise && angleEnd > angleEndQuadrant))
1092  {
1093  /* Adjust the end angle for this quadrant */
1094  angleEndQuadrant = angleEnd;
1095  end = TRUE;
1096  }
1097 
1098  /* Add the Bezier spline to the path */
1099  PATH_DoArcPart(pPath,
1100  corners,
1101  angleStartQuadrant,
1102  angleEndQuadrant,
1103  start ? (lines == GdiTypeArcTo ? PT_LINETO : PT_MOVETO) : FALSE); // -1
1104  start = FALSE;
1105  }
1106  while (!end);
1107 
1108  if (lines == GdiTypeArcTo)
1109  {
1110  update_current_pos( pPath );
1111  }
1112  else /* chord: close figure. pie: add line and close figure */
1113  if (lines == GdiTypeChord) // 1
1114  {
1115  IntGdiCloseFigure(pPath);
1116  }
1117  else if (lines == GdiTypePie) // 2
1118  {
1119  centre.x = (corners[0].x + corners[1].x) / 2;
1120  centre.y = (corners[0].y + corners[1].y) / 2;
1121  if (!PATH_AddEntry(pPath, &centre, PT_LINETO | PT_CLOSEFIGURE))
1122  Ret = FALSE;
1123  }
1124 ArcExit:
1125  PATH_UnlockPath(pPath);
1126  return Ret;
1127 }
1128 
1129 BOOL
1130 FASTCALL
1132  PDC dc,
1133  const POINT *pts,
1134  DWORD cbPoints)
1135 {
1136  PPATH pPath;
1137  BOOL ret;
1138 
1139  ASSERT(dc);
1140  ASSERT(pts);
1141  ASSERT(cbPoints);
1142 
1143  pPath = PATH_LockPath(dc->dclevel.hPath);
1144  if (!pPath) return FALSE;
1145 
1146  ret = add_log_points_new_stroke( dc, pPath, pts, cbPoints, PT_BEZIERTO );
1147 
1148  PATH_UnlockPath(pPath);
1149  return ret;
1150 }
1151 
1152 BOOL
1153 FASTCALL
1155  PDC dc,
1156  const POINT *pts,
1157  DWORD cbPoints)
1158 {
1159  PPATH pPath;
1160  BYTE *type;
1161 
1162  ASSERT(dc);
1163  ASSERT(pts);
1164  ASSERT(cbPoints);
1165 
1166  pPath = PATH_LockPath(dc->dclevel.hPath);
1167  if (!pPath) return FALSE;
1168 
1169  type = add_log_points( dc, pPath, pts, cbPoints, PT_BEZIERTO );
1170  if (!type) return FALSE;
1171 
1172  type[0] = PT_MOVETO;
1173 
1174  PATH_UnlockPath(pPath);
1175  return TRUE;
1176 }
1177 
1178 BOOL
1179 FASTCALL
1181  PDC dc,
1182  const POINT *pts,
1183  const BYTE *types,
1184  DWORD cbPoints)
1185 {
1186  PPATH pPath;
1187  POINT orig_pos, cur_pos;
1188  ULONG i, lastmove = 0;
1189 
1190  pPath = PATH_LockPath(dc->dclevel.hPath);
1191  if (!pPath) return FALSE;
1192 
1193  if (pPath->state != PATH_Open)
1194  {
1195  PATH_UnlockPath(pPath);
1196  return FALSE;
1197  }
1198 
1199  for (i = 0; i < pPath->numEntriesUsed; i++) if (pPath->pFlags[i] == PT_MOVETO) lastmove = i;
1200  orig_pos = pPath->pos;
1201 
1202  IntGetCurrentPositionEx(dc, &cur_pos);
1203 
1204  TRACE("PPD : Current pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
1205  TRACE("PPD : last %d pos X %d Y %d\n",lastmove, pPath->pPoints[lastmove].x, pPath->pPoints[lastmove].y);
1206 
1207 
1208  for(i = 0; i < cbPoints; i++)
1209  {
1210  switch (types[i])
1211  {
1212  case PT_MOVETO:
1213  pPath->newStroke = TRUE;
1214  pPath->pos = pts[i];
1215  IntLPtoDP( dc, &pPath->pos, 1);
1216  lastmove = pPath->numEntriesUsed;
1217  break;
1218  case PT_LINETO:
1219  case PT_LINETO | PT_CLOSEFIGURE:
1220  if (!add_log_points_new_stroke( dc, pPath, &pts[i], 1, PT_LINETO ))
1221  {
1222  PATH_UnlockPath(pPath);
1223  return FALSE;
1224  }
1225  break;
1226  case PT_BEZIERTO:
1227  if ((i + 2 < cbPoints) && (types[i + 1] == PT_BEZIERTO) &&
1228  (types[i + 2] & ~PT_CLOSEFIGURE) == PT_BEZIERTO)
1229  {
1230  if (!add_log_points_new_stroke( dc, pPath, &pts[i], 3, PT_BEZIERTO ))
1231  {
1232  PATH_UnlockPath(pPath);
1233  return FALSE;
1234  }
1235  i += 2;
1236  break;
1237  }
1238  /* fall through */
1239  default:
1240  /* restore original position */
1241  pPath->pos = orig_pos;
1242 
1243  TRACE("PPD Bad : pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
1244 
1245  IntGdiMoveToEx(dc, cur_pos.x, cur_pos.y, NULL);
1246 
1247  PATH_UnlockPath(pPath);
1248  return FALSE;
1249  }
1250 
1251  if (types[i] & PT_CLOSEFIGURE)
1252  {
1253  close_figure( pPath );
1254  pPath->pos = pPath->pPoints[lastmove];
1255  TRACE("PPD close : pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
1256  }
1257  }
1258  PATH_UnlockPath(pPath);
1259  return TRUE;
1260 }
1261 
1262 BOOL
1263 FASTCALL
1265  PDC dc,
1266  const POINT *pts,
1267  DWORD cbPoints)
1268 {
1269  PPATH pPath;
1270  BOOL ret;
1271 
1272  ASSERT(dc);
1273  ASSERT(pts);
1274  ASSERT(cbPoints);
1275 
1276  if (cbPoints < 1) return FALSE;
1277 
1278  pPath = PATH_LockPath(dc->dclevel.hPath);
1279  if (!pPath) return FALSE;
1280 
1281  ret = add_log_points_new_stroke( dc, pPath, pts, cbPoints, PT_LINETO );
1282  PATH_UnlockPath(pPath);
1283  return ret;
1284 }
1285 
1286 BOOL
1287 FASTCALL
1289  PDC dc,
1290  const POINT* pts,
1291  const INT* counts,
1292  UINT polygons)
1293 {
1294  UINT poly, count;
1295  BYTE *type;
1296  PPATH pPath;
1297 
1298  ASSERT(dc);
1299  ASSERT(pts);
1300  ASSERT(counts);
1301  ASSERT(polygons);
1302 
1303  if (!polygons) return FALSE;
1304 
1305  pPath = PATH_LockPath(dc->dclevel.hPath);
1306  if (!pPath) return FALSE;
1307 
1308 
1309  for (poly = count = 0; poly < polygons; poly++)
1310  {
1311  if (counts[poly] < 2)
1312  {
1313  PATH_UnlockPath(pPath);
1314  return FALSE;
1315  }
1316  count += counts[poly];
1317  }
1318 
1319  type = add_log_points( dc, pPath, pts, count, PT_LINETO );
1320  if (!type)
1321  {
1322  PATH_UnlockPath(pPath);
1323  return FALSE;
1324  }
1325 
1326  /* make the first point of each polyline a PT_MOVETO, and close the last one */
1327  for (poly = 0; poly < polygons; type += counts[poly++])
1328  {
1329  type[0] = PT_MOVETO;
1330  type[counts[poly] - 1] = PT_LINETO | PT_CLOSEFIGURE;
1331  }
1332  PATH_UnlockPath(pPath);
1333  return TRUE;
1334 }
1335 
1336 BOOL
1337 FASTCALL
1339  PDC dc,
1340  const POINT* pts,
1341  const DWORD* counts,
1342  DWORD polylines)
1343 {
1344  POINT pt;
1345  ULONG poly, point, i;
1346  PPATH pPath;
1347 
1348  ASSERT(dc);
1349  ASSERT(pts);
1350  ASSERT(counts);
1351  ASSERT(polylines);
1352 
1353  pPath = PATH_LockPath(dc->dclevel.hPath);
1354  if (!pPath)
1355  {
1356  return FALSE;
1357  }
1358 
1359  for (i = 0, poly = 0; poly < polylines; poly++)
1360  {
1361  for (point = 0; point < counts[poly]; point++, i++)
1362  {
1363  pt = pts[i];
1364  CoordLPtoDP(dc, &pt);
1365  PATH_AddEntry(pPath, &pt, (point == 0) ? PT_MOVETO : PT_LINETO);
1366  }
1367  }
1368  TRACE("PATH_PolyPolyline end count %d\n",pPath->numEntriesUsed);
1369  PATH_UnlockPath(pPath);
1370  return TRUE;
1371 }
1372 
1373 /* PATH_AddFlatBezier
1374  *
1375  */
1376 BOOL
1377 FASTCALL
1379  PPATH pPath,
1380  POINT *pt,
1381  BOOL closed)
1382 {
1383  POINT *pts;
1384  BOOL ret = FALSE;
1385  INT no, i;
1386 
1387  pts = GDI_Bezier(pt, 4, &no);
1388  if (!pts) return FALSE;
1389 
1390  for (i = 1; i < no; i++)
1391  {
1392  if (!(ret = PATH_AddEntry(pPath, &pts[i], (i == no - 1 && closed) ? PT_LINETO | PT_CLOSEFIGURE : PT_LINETO)))
1393  break;
1394  }
1395 
1397  return ret;
1398 }
1399 
1400 /* PATH_FlattenPath
1401  *
1402  * Replaces Beziers with line segments
1403  *
1404  */
1405 PPATH
1406 FASTCALL
1408 {
1409  PPATH newPath;
1410  INT srcpt;
1411  TRACE("PATH_FlattenPath\n");
1412  if (!(newPath = PATH_CreatePath(pPath->numEntriesUsed))) return NULL;
1413 
1414  for (srcpt = 0; srcpt < pPath->numEntriesUsed; srcpt++)
1415  {
1416  switch(pPath->pFlags[srcpt] & ~PT_CLOSEFIGURE)
1417  {
1418  case PT_MOVETO:
1419  case PT_LINETO:
1420  if (!PATH_AddEntry(newPath, &pPath->pPoints[srcpt], pPath->pFlags[srcpt]))
1421  {
1422  PATH_UnlockPath(newPath);
1423  PATH_Delete(newPath->BaseObject.hHmgr);
1424  return NULL;
1425  }
1426  break;
1427  case PT_BEZIERTO:
1428  if(!PATH_AddFlatBezier(newPath, &pPath->pPoints[srcpt - 1], pPath->pFlags[srcpt + 2] & PT_CLOSEFIGURE))
1429  {
1430  PATH_UnlockPath(newPath);
1431  PATH_Delete(newPath->BaseObject.hHmgr);
1432  return NULL;
1433  }
1434  srcpt += 2;
1435  break;
1436  }
1437  }
1438  TRACE("PATH_FlattenPath good\n");
1439  newPath->state = pPath->state;
1440  return newPath;
1441 }
1442 
1443 /* PATH_PathToRegion
1444  *
1445  * Creates a region from the specified path using the specified polygon
1446  * filling mode. The path is left unchanged. A handle to the region that
1447  * was created is stored in *pHrgn.
1448  */
1449 BOOL
1450 FASTCALL
1452  PPATH pPath,
1453  INT Mode,
1454  PREGION Rgn)
1455 {
1456  int i, pos, polygons;
1457  PULONG counts;
1458  int Ret;
1459 
1460  if (!pPath->numEntriesUsed) return FALSE;
1461 
1462  counts = ExAllocatePoolWithTag(PagedPool, (pPath->numEntriesUsed / 2) * sizeof(counts), TAG_PATH);
1463  if (!counts)
1464  {
1465  ERR("Failed to allocate %lu strokes\n", (pPath->numEntriesUsed / 2) * sizeof(*counts));
1467  return FALSE;
1468  }
1469 
1470  pos = polygons = 0;
1471  ASSERT( pPath->pFlags[0] == PT_MOVETO );
1472  for (i = 1; i < pPath->numEntriesUsed; i++)
1473  {
1474  if (pPath->pFlags[i] != PT_MOVETO) continue;
1475  counts[polygons++] = i - pos;
1476  pos = i;
1477  }
1478  if (i > pos + 1) counts[polygons++] = i - pos;
1479 
1480  ASSERT( polygons <= pPath->numEntriesUsed / 2 );
1481 
1482  /* Fill the region with the strokes */
1483  Ret = REGION_SetPolyPolygonRgn(Rgn,
1484  pPath->pPoints,
1485  counts,
1486  polygons,
1487  Mode);
1488  if (!Ret)
1489  {
1490  ERR("REGION_SetPolyPolygonRgn failed\n");
1491  }
1492 
1493  ExFreePoolWithTag(counts, TAG_PATH);
1494 
1495  /* Success! */
1496  return Ret;
1497 }
1498 
1499 /* PATH_FillPath
1500  *
1501  * You can play with this as long as you like, but if you break Area.exe the purge will Begain on Path!!!
1502  *
1503  */
1504 BOOL
1505 FASTCALL
1507  PDC dc,
1508  PPATH pPath)
1509 {
1510  return PATH_FillPathEx(dc, pPath, NULL);
1511 }
1512 
1513 BOOL
1514 FASTCALL
1516  PDC dc,
1517  PPATH pPath,
1518  PBRUSH pbrFill)
1519 {
1520  INT mapMode, graphicsMode;
1521  SIZE ptViewportExt, ptWindowExt;
1522  POINTL ptViewportOrg, ptWindowOrg;
1523  XFORML xform;
1524  PREGION Rgn;
1525  PDC_ATTR pdcattr = dc->pdcattr;
1526 
1527  /* Allocate a temporary region */
1528  Rgn = IntSysCreateRectpRgn(0, 0, 0, 0);
1529  if (!Rgn)
1530  {
1532  return FALSE;
1533  }
1534 
1535  if (!PATH_PathToRegion(pPath, pdcattr->jFillMode, Rgn))
1536  {
1537  TRACE("PFP : Fail P2R\n");
1538  /* EngSetLastError ? */
1539  REGION_Delete(Rgn);
1540  return FALSE;
1541  }
1542 
1543  /* Since PaintRgn interprets the region as being in logical coordinates
1544  * but the points we store for the path are already in device
1545  * coordinates, we have to set the mapping mode to MM_TEXT temporarily.
1546  * Using SaveDC to save information about the mapping mode / world
1547  * transform would be easier but would require more overhead, especially
1548  * now that SaveDC saves the current path.
1549  */
1550 
1551  /* Save the information about the old mapping mode */
1552  mapMode = pdcattr->iMapMode;
1553  ptViewportExt = pdcattr->szlViewportExt;
1554  ptViewportOrg = pdcattr->ptlViewportOrg;
1555  ptWindowExt = pdcattr->szlWindowExt;
1556  ptWindowOrg = pdcattr->ptlWindowOrg;
1557 
1558  /* Save world transform
1559  * NB: The Windows documentation on world transforms would lead one to
1560  * believe that this has to be done only in GM_ADVANCED; however, my
1561  * tests show that resetting the graphics mode to GM_COMPATIBLE does
1562  * not reset the world transform.
1563  */
1564  MatrixS2XForm(&xform, &dc->pdcattr->mxWorldToPage);
1565 
1566  /* Set MM_TEXT */
1568  pdcattr->ptlViewportOrg.x = 0;
1569  pdcattr->ptlViewportOrg.y = 0;
1570  pdcattr->ptlWindowOrg.x = 0;
1571  pdcattr->ptlWindowOrg.y = 0;
1572 
1573  graphicsMode = pdcattr->iGraphicsMode;
1574  pdcattr->iGraphicsMode = GM_ADVANCED;
1576  pdcattr->iGraphicsMode = graphicsMode;
1577 
1578  /* Paint the region */
1579  IntGdiFillRgn(dc, Rgn, pbrFill);
1580  REGION_Delete(Rgn);
1581  /* Restore the old mapping mode */
1582  IntGdiSetMapMode(dc, mapMode);
1583  pdcattr->szlViewportExt = ptViewportExt;
1584  pdcattr->ptlViewportOrg = ptViewportOrg;
1585  pdcattr->szlWindowExt = ptWindowExt;
1586  pdcattr->ptlWindowOrg = ptWindowOrg;
1587 
1588  /* Go to GM_ADVANCED temporarily to restore the world transform */
1589  graphicsMode = pdcattr->iGraphicsMode;
1590  pdcattr->iGraphicsMode = GM_ADVANCED;
1592  pdcattr->iGraphicsMode = graphicsMode;
1593  return TRUE;
1594 }
1595 
1596 BOOL
1597 FASTCALL
1599  DC *dc,
1600  PPATH pPath)
1601 {
1602  BOOL ret = FALSE;
1603  INT nLinePts, nAlloc, jOldFillMode, i = 0;
1604  POINT *pLinePts = NULL;
1605  POINT ptViewportOrg, ptWindowOrg;
1606  SIZE szViewportExt, szWindowExt;
1607  DWORD mapMode, graphicsMode;
1608  XFORM xform;
1609  PDC_ATTR pdcattr = dc->pdcattr;
1610  PBRUSH pbrLine;
1611  PPATH pNewPath;
1612 
1613  TRACE("Enter %s\n", __FUNCTION__);
1614 
1615  pbrLine = dc->dclevel.pbrLine;
1616  if (IntIsEffectiveWidePen(pbrLine))
1617  {
1618  pNewPath = PATH_WidenPathEx(dc, pPath);
1619  if (pNewPath)
1620  {
1621  /* Fill the path with the WINDING fill mode */
1622  jOldFillMode = pdcattr->jFillMode;
1623  pdcattr->jFillMode = WINDING;
1624  PATH_FillPathEx(dc, pNewPath, pbrLine);
1625  pdcattr->jFillMode = jOldFillMode;
1626 
1627  PATH_Delete(pNewPath->BaseObject.hHmgr);
1628  return TRUE;
1629  }
1630  }
1631 
1632  /* Save the mapping mode info */
1633  mapMode = pdcattr->iMapMode;
1634 
1635  szViewportExt = *DC_pszlViewportExt(dc);
1636  ptViewportOrg = dc->pdcattr->ptlViewportOrg;
1637  szWindowExt = dc->pdcattr->szlWindowExt;
1638  ptWindowOrg = dc->pdcattr->ptlWindowOrg;
1639 
1640  MatrixS2XForm(&xform, &dc->pdcattr->mxWorldToPage);
1641 
1642  /* Set MM_TEXT */
1643  pdcattr->iMapMode = MM_TEXT;
1644  pdcattr->ptlViewportOrg.x = 0;
1645  pdcattr->ptlViewportOrg.y = 0;
1646  pdcattr->ptlWindowOrg.x = 0;
1647  pdcattr->ptlWindowOrg.y = 0;
1648  graphicsMode = pdcattr->iGraphicsMode;
1649  pdcattr->iGraphicsMode = GM_ADVANCED;
1651  pdcattr->iGraphicsMode = graphicsMode;
1652 
1653  /* Allocate enough memory for the worst case without beziers (one PT_MOVETO
1654  * and the rest PT_LINETO with PT_CLOSEFIGURE at the end) plus some buffer
1655  * space in case we get one to keep the number of reallocations small. */
1656  nAlloc = pPath->numEntriesUsed + 1 + 300;
1657  pLinePts = ExAllocatePoolWithTag(PagedPool, nAlloc * sizeof(POINT), TAG_PATH);
1658  if (!pLinePts)
1659  {
1660  ERR("Can't allocate pool!\n");
1662  goto end;
1663  }
1664  nLinePts = 0;
1665 
1666  for (i = 0; i < pPath->numEntriesUsed; i++)
1667  {
1668  if ((i == 0 || (pPath->pFlags[i - 1] & PT_CLOSEFIGURE))
1669  && (pPath->pFlags[i] != PT_MOVETO))
1670  {
1671  ERR("Expected PT_MOVETO %s, got path flag %d\n",
1672  i == 0 ? "as first point" : "after PT_CLOSEFIGURE",
1673  (INT)pPath->pFlags[i]);
1674  goto end;
1675  }
1676 
1677  switch(pPath->pFlags[i])
1678  {
1679  case PT_MOVETO:
1680  TRACE("Got PT_MOVETO (%ld, %ld)\n",
1681  pPath->pPoints[i].x, pPath->pPoints[i].y);
1682  if (nLinePts >= 2) IntGdiPolyline(dc, pLinePts, nLinePts);
1683  nLinePts = 0;
1684  pLinePts[nLinePts++] = pPath->pPoints[i];
1685  break;
1686  case PT_LINETO:
1687  case (PT_LINETO | PT_CLOSEFIGURE):
1688  TRACE("Got PT_LINETO (%ld, %ld)\n",
1689  pPath->pPoints[i].x, pPath->pPoints[i].y);
1690  pLinePts[nLinePts++] = pPath->pPoints[i];
1691  break;
1692  case PT_BEZIERTO:
1693  TRACE("Got PT_BEZIERTO\n");
1694  if (pPath->pFlags[i + 1] != PT_BEZIERTO ||
1695  (pPath->pFlags[i + 2] & ~PT_CLOSEFIGURE) != PT_BEZIERTO)
1696  {
1697  ERR("Path didn't contain 3 successive PT_BEZIERTOs\n");
1698  ret = FALSE;
1699  goto end;
1700  }
1701  else
1702  {
1703  INT nBzrPts, nMinAlloc;
1704  POINT *pBzrPts = GDI_Bezier(&pPath->pPoints[i - 1], 4, &nBzrPts);
1705  /* Make sure we have allocated enough memory for the lines of
1706  * this bezier and the rest of the path, assuming we won't get
1707  * another one (since we won't reallocate again then). */
1708  nMinAlloc = nLinePts + (pPath->numEntriesUsed - i) + nBzrPts;
1709  if (nAlloc < nMinAlloc)
1710  {
1711  // Reallocate memory
1712 
1713  POINT *Realloc = NULL;
1714  nAlloc = nMinAlloc * 2;
1715 
1717  nAlloc * sizeof(POINT),
1718  TAG_PATH);
1719 
1720  if (!Realloc)
1721  {
1722  ERR("Can't allocate pool!\n");
1723  ExFreePoolWithTag(pBzrPts, TAG_BEZIER);
1724  goto end;
1725  }
1726 
1727  memcpy(Realloc, pLinePts, nLinePts * sizeof(POINT));
1728  ExFreePoolWithTag(pLinePts, TAG_PATH);
1729  pLinePts = Realloc;
1730  }
1731  memcpy(&pLinePts[nLinePts], &pBzrPts[1], (nBzrPts - 1) * sizeof(POINT));
1732  nLinePts += nBzrPts - 1;
1733  ExFreePoolWithTag(pBzrPts, TAG_BEZIER);
1734  i += 2;
1735  }
1736  break;
1737  default:
1738  ERR("Got path flag %d (not supported)\n", (INT)pPath->pFlags[i]);
1739  goto end;
1740  }
1741 
1742  if (pPath->pFlags[i] & PT_CLOSEFIGURE)
1743  {
1744  pLinePts[nLinePts++] = pLinePts[0];
1745  }
1746  }
1747  if (nLinePts >= 2)
1748  IntGdiPolyline(dc, pLinePts, nLinePts);
1749 
1750  ret = TRUE;
1751 
1752 end:
1753  if (pLinePts) ExFreePoolWithTag(pLinePts, TAG_PATH);
1754 
1755  /* Restore the old mapping mode */
1756  pdcattr->iMapMode = mapMode;
1757  pdcattr->szlWindowExt.cx = szWindowExt.cx;
1758  pdcattr->szlWindowExt.cy = szWindowExt.cy;
1759  pdcattr->ptlWindowOrg.x = ptWindowOrg.x;
1760  pdcattr->ptlWindowOrg.y = ptWindowOrg.y;
1761 
1762  pdcattr->szlViewportExt.cx = szViewportExt.cx;
1763  pdcattr->szlViewportExt.cy = szViewportExt.cy;
1764  pdcattr->ptlViewportOrg.x = ptViewportOrg.x;
1765  pdcattr->ptlViewportOrg.y = ptViewportOrg.y;
1766 
1767  /* Restore the world transform */
1768  XForm2MatrixS(&dc->pdcattr->mxWorldToPage, &xform);
1769 
1770  /* If we've moved the current point then get its new position
1771  which will be in device (MM_TEXT) co-ords, convert it to
1772  logical co-ords and re-set it. This basically updates
1773  dc->CurPosX|Y so that their values are in the correct mapping
1774  mode.
1775  */
1776  if (i > 0)
1777  {
1778  POINT pt;
1780  IntDPtoLP(dc, &pt, 1);
1781  IntGdiMoveToEx(dc, pt.x, pt.y, NULL);
1782  }
1783  TRACE("Leave %s, ret=%d\n", __FUNCTION__, ret);
1784  return ret;
1785 }
1786 
1787 #define round(x) ((int)((x)>0?(x)+0.5:(x)-0.5))
1788 
1790 IntGdiWidenPath(PPATH pPath, UINT penWidth, UINT penStyle, FLOAT eMiterLimit)
1791 {
1792  INT i, j, numStrokes, numOldStrokes, penWidthIn, penWidthOut;
1793  PPATH flat_path, pNewPath, *pStrokes = NULL, *pOldStrokes, pUpPath, pDownPath;
1794  BYTE *type;
1795  DWORD joint, endcap;
1796 
1797  endcap = (PS_ENDCAP_MASK & penStyle);
1798  joint = (PS_JOIN_MASK & penStyle);
1799 
1800  if (!(flat_path = PATH_FlattenPath(pPath)))
1801  {
1802  ERR("PATH_FlattenPath\n");
1803  return NULL;
1804  }
1805 
1806  penWidthIn = penWidth / 2;
1807  penWidthOut = penWidth / 2;
1808  if (penWidthIn + penWidthOut < penWidth)
1809  penWidthOut++;
1810 
1811  numStrokes = 0;
1812 
1813  for (i = 0, j = 0; i < flat_path->numEntriesUsed; i++, j++)
1814  {
1815  POINT point;
1816  if ((i == 0 || (flat_path->pFlags[i - 1] & PT_CLOSEFIGURE)) &&
1817  (flat_path->pFlags[i] != PT_MOVETO))
1818  {
1819  ERR("Expected PT_MOVETO %s, got path flag %c\n",
1820  i == 0 ? "as first point" : "after PT_CLOSEFIGURE",
1821  flat_path->pFlags[i]);
1822  if (pStrokes)
1823  ExFreePoolWithTag(pStrokes, TAG_PATH);
1824  PATH_UnlockPath(flat_path);
1825  PATH_Delete(flat_path->BaseObject.hHmgr);
1826  return NULL;
1827  }
1828  switch(flat_path->pFlags[i])
1829  {
1830  case PT_MOVETO:
1831  if (numStrokes > 0)
1832  {
1833  pStrokes[numStrokes - 1]->state = PATH_Closed;
1834  }
1835  numOldStrokes = numStrokes;
1836  numStrokes++;
1837  j = 0;
1838  if (numStrokes == 1)
1839  pStrokes = ExAllocatePoolWithTag(PagedPool, sizeof(*pStrokes), TAG_PATH);
1840  else
1841  {
1842  pOldStrokes = pStrokes; // Save old pointer.
1843  pStrokes = ExAllocatePoolWithTag(PagedPool, numStrokes * sizeof(*pStrokes), TAG_PATH);
1844  if (!pStrokes)
1845  {
1846  ExFreePoolWithTag(pOldStrokes, TAG_PATH);
1847  PATH_UnlockPath(flat_path);
1848  PATH_Delete(flat_path->BaseObject.hHmgr);
1849  return NULL;
1850  }
1851  RtlCopyMemory(pStrokes, pOldStrokes, numOldStrokes * sizeof(PPATH));
1852  ExFreePoolWithTag(pOldStrokes, TAG_PATH); // Free old pointer.
1853  }
1854  if (!pStrokes)
1855  {
1856  PATH_UnlockPath(flat_path);
1857  PATH_Delete(flat_path->BaseObject.hHmgr);
1858  return NULL;
1859  }
1860  pStrokes[numStrokes - 1] = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
1861  if (!pStrokes[numStrokes - 1])
1862  {
1863  ASSERT(FALSE); // FIXME
1864  }
1865  PATH_InitGdiPath(pStrokes[numStrokes - 1]);
1866  pStrokes[numStrokes - 1]->state = PATH_Open;
1867  case PT_LINETO:
1868  case (PT_LINETO | PT_CLOSEFIGURE):
1869  point.x = flat_path->pPoints[i].x;
1870  point.y = flat_path->pPoints[i].y;
1871  PATH_AddEntry(pStrokes[numStrokes - 1], &point, flat_path->pFlags[i]);
1872  break;
1873  case PT_BEZIERTO:
1874  /* Should never happen because of the FlattenPath call */
1875  ERR("Should never happen\n");
1876  break;
1877  default:
1878  ERR("Got path flag %c\n", flat_path->pFlags[i]);
1879  if (pStrokes)
1880  ExFreePoolWithTag(pStrokes, TAG_PATH);
1881  PATH_UnlockPath(flat_path);
1882  PATH_Delete(flat_path->BaseObject.hHmgr);
1883  return NULL;
1884  }
1885  }
1886 
1887  pNewPath = PATH_CreatePath( flat_path->numEntriesUsed );
1888 
1889  for (i = 0; i < numStrokes; i++)
1890  {
1891  pUpPath = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
1892  PATH_InitGdiPath(pUpPath);
1893  pUpPath->state = PATH_Open;
1894  pDownPath = ExAllocatePoolWithTag(PagedPool, sizeof(PATH), TAG_PATH);
1895  PATH_InitGdiPath(pDownPath);
1896  pDownPath->state = PATH_Open;
1897 
1898  for (j = 0; j < pStrokes[i]->numEntriesUsed; j++)
1899  {
1900  /* Beginning or end of the path if not closed */
1901  if ((!(pStrokes[i]->pFlags[pStrokes[i]->numEntriesUsed - 1] & PT_CLOSEFIGURE)) && (j == 0 || j == pStrokes[i]->numEntriesUsed - 1))
1902  {
1903  /* Compute segment angle */
1904  INT xo, yo, xa, ya;
1905  double theta;
1906  POINT pt;
1907  POINT corners[2];
1908  if (j == 0)
1909  {
1910  xo = pStrokes[i]->pPoints[j].x;
1911  yo = pStrokes[i]->pPoints[j].y;
1912  xa = pStrokes[i]->pPoints[1].x;
1913  ya = pStrokes[i]->pPoints[1].y;
1914  }
1915  else
1916  {
1917  xa = pStrokes[i]->pPoints[j - 1].x;
1918  ya = pStrokes[i]->pPoints[j - 1].y;
1919  xo = pStrokes[i]->pPoints[j].x;
1920  yo = pStrokes[i]->pPoints[j].y;
1921  }
1922  theta = atan2(ya - yo, xa - xo);
1923  switch(endcap)
1924  {
1925  case PS_ENDCAP_SQUARE :
1926  pt.x = xo + round(sqrt(2) * penWidthOut * cos(M_PI_4 + theta));
1927  pt.y = yo + round(sqrt(2) * penWidthOut * sin(M_PI_4 + theta));
1928  PATH_AddEntry(pUpPath, &pt, (j == 0 ? PT_MOVETO : PT_LINETO));
1929  pt.x = xo + round(sqrt(2) * penWidthIn * cos(- M_PI_4 + theta));
1930  pt.y = yo + round(sqrt(2) * penWidthIn * sin(- M_PI_4 + theta));
1931  PATH_AddEntry(pUpPath, &pt, PT_LINETO);
1932  break;
1933  case PS_ENDCAP_FLAT :
1934  pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
1935  pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
1936  PATH_AddEntry(pUpPath, &pt, (j == 0 ? PT_MOVETO : PT_LINETO));
1937  pt.x = xo - round(penWidthIn * cos(theta + M_PI_2));
1938  pt.y = yo - round(penWidthIn * sin(theta + M_PI_2));
1939  PATH_AddEntry(pUpPath, &pt, PT_LINETO);
1940  break;
1941  case PS_ENDCAP_ROUND :
1942  default :
1943  corners[0].x = xo - penWidthIn;
1944  corners[0].y = yo - penWidthIn;
1945  corners[1].x = xo + penWidthOut;
1946  corners[1].y = yo + penWidthOut;
1947  PATH_DoArcPart(pUpPath , corners, theta + M_PI_2 , theta + 3 * M_PI_4, (j == 0 ? PT_MOVETO : FALSE));
1948  PATH_DoArcPart(pUpPath , corners, theta + 3 * M_PI_4 , theta + M_PI, FALSE);
1949  PATH_DoArcPart(pUpPath , corners, theta + M_PI, theta + 5 * M_PI_4, FALSE);
1950  PATH_DoArcPart(pUpPath , corners, theta + 5 * M_PI_4 , theta + 3 * M_PI_2, FALSE);
1951  break;
1952  }
1953  }
1954  /* Corpse of the path */
1955  else
1956  {
1957  /* Compute angle */
1958  INT previous, next;
1959  double xa, ya, xb, yb, xo, yo;
1960  double alpha, theta, miterWidth;
1961  DWORD _joint = joint;
1962  POINT pt;
1963  PPATH pInsidePath, pOutsidePath;
1964  if (j > 0 && j < pStrokes[i]->numEntriesUsed - 1)
1965  {
1966  previous = j - 1;
1967  next = j + 1;
1968  }
1969  else if (j == 0)
1970  {
1971  previous = pStrokes[i]->numEntriesUsed - 1;
1972  next = j + 1;
1973  }
1974  else
1975  {
1976  previous = j - 1;
1977  next = 0;
1978  }
1979  xo = pStrokes[i]->pPoints[j].x;
1980  yo = pStrokes[i]->pPoints[j].y;
1981  xa = pStrokes[i]->pPoints[previous].x;
1982  ya = pStrokes[i]->pPoints[previous].y;
1983  xb = pStrokes[i]->pPoints[next].x;
1984  yb = pStrokes[i]->pPoints[next].y;
1985  theta = atan2(yo - ya, xo - xa);
1986  alpha = atan2(yb - yo, xb - xo) - theta;
1987  if (alpha > 0) alpha -= M_PI;
1988  else alpha += M_PI;
1989  if (_joint == PS_JOIN_MITER && eMiterLimit < fabs(1 / sin(alpha / 2)))
1990  {
1991  _joint = PS_JOIN_BEVEL;
1992  }
1993  if (alpha > 0)
1994  {
1995  pInsidePath = pUpPath;
1996  pOutsidePath = pDownPath;
1997  }
1998  else if (alpha < 0)
1999  {
2000  pInsidePath = pDownPath;
2001  pOutsidePath = pUpPath;
2002  }
2003  else
2004  {
2005  continue;
2006  }
2007  /* Inside angle points */
2008  if (alpha > 0)
2009  {
2010  pt.x = xo - round(penWidthIn * cos(theta + M_PI_2));
2011  pt.y = yo - round(penWidthIn * sin(theta + M_PI_2));
2012  }
2013  else
2014  {
2015  pt.x = xo + round(penWidthIn * cos(theta + M_PI_2));
2016  pt.y = yo + round(penWidthIn * sin(theta + M_PI_2));
2017  }
2018  PATH_AddEntry(pInsidePath, &pt, PT_LINETO);
2019  if (alpha > 0)
2020  {
2021  pt.x = xo + round(penWidthIn * cos(M_PI_2 + alpha + theta));
2022  pt.y = yo + round(penWidthIn * sin(M_PI_2 + alpha + theta));
2023  }
2024  else
2025  {
2026  pt.x = xo - round(penWidthIn * cos(M_PI_2 + alpha + theta));
2027  pt.y = yo - round(penWidthIn * sin(M_PI_2 + alpha + theta));
2028  }
2029  PATH_AddEntry(pInsidePath, &pt, PT_LINETO);
2030  /* Outside angle point */
2031  switch(_joint)
2032  {
2033  case PS_JOIN_MITER :
2034  miterWidth = fabs(penWidthOut / cos(M_PI_2 - fabs(alpha) / 2));
2035  pt.x = xo + round(miterWidth * cos(theta + alpha / 2));
2036  pt.y = yo + round(miterWidth * sin(theta + alpha / 2));
2037  PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
2038  break;
2039  case PS_JOIN_BEVEL :
2040  if (alpha > 0)
2041  {
2042  pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
2043  pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
2044  }
2045  else
2046  {
2047  pt.x = xo - round(penWidthOut * cos(theta + M_PI_2));
2048  pt.y = yo - round(penWidthOut * sin(theta + M_PI_2));
2049  }
2050  PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
2051  if (alpha > 0)
2052  {
2053  pt.x = xo - round(penWidthOut * cos(M_PI_2 + alpha + theta));
2054  pt.y = yo - round(penWidthOut * sin(M_PI_2 + alpha + theta));
2055  }
2056  else
2057  {
2058  pt.x = xo + round(penWidthOut * cos(M_PI_2 + alpha + theta));
2059  pt.y = yo + round(penWidthOut * sin(M_PI_2 + alpha + theta));
2060  }
2061  PATH_AddEntry(pOutsidePath, &pt, PT_LINETO);
2062  break;
2063  case PS_JOIN_ROUND :
2064  default :
2065  if (alpha > 0)
2066  {
2067  pt.x = xo + round(penWidthOut * cos(theta + M_PI_2));
2068  pt.y = yo + round(penWidthOut * sin(theta + M_PI_2));
2069  }
2070  else
2071  {
2072  pt.x = xo - round(penWidthOut * cos(theta + M_PI_2));
2073  pt.y = yo - round(penWidthOut * sin(theta + M_PI_2));
2074  }
2075  PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
2076  pt.x = xo + round(penWidthOut * cos(theta + alpha / 2));
2077  pt.y = yo + round(penWidthOut * sin(theta + alpha / 2));
2078  PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
2079  if (alpha > 0)
2080  {
2081  pt.x = xo - round(penWidthOut * cos(M_PI_2 + alpha + theta));
2082  pt.y = yo - round(penWidthOut * sin(M_PI_2 + alpha + theta));
2083  }
2084  else
2085  {
2086  pt.x = xo + round(penWidthOut * cos(M_PI_2 + alpha + theta));
2087  pt.y = yo + round(penWidthOut * sin(M_PI_2 + alpha + theta));
2088  }
2089  PATH_AddEntry(pOutsidePath, &pt, PT_BEZIERTO);
2090  break;
2091  }
2092  }
2093  }
2094  type = add_points( pNewPath, pUpPath->pPoints, pUpPath->numEntriesUsed, PT_LINETO );
2095  type[0] = PT_MOVETO;
2096  reverse_points( pDownPath->pPoints, pDownPath->numEntriesUsed );
2097  type = add_points( pNewPath, pDownPath->pPoints, pDownPath->numEntriesUsed, PT_LINETO );
2098  if (pStrokes[i]->pFlags[pStrokes[i]->numEntriesUsed - 1] & PT_CLOSEFIGURE) type[0] = PT_MOVETO;
2099 
2100  PATH_DestroyGdiPath(pStrokes[i]);
2101  ExFreePoolWithTag(pStrokes[i], TAG_PATH);
2102  PATH_DestroyGdiPath(pUpPath);
2103  ExFreePoolWithTag(pUpPath, TAG_PATH);
2104  PATH_DestroyGdiPath(pDownPath);
2105  ExFreePoolWithTag(pDownPath, TAG_PATH);
2106  }
2107  if (pStrokes) ExFreePoolWithTag(pStrokes, TAG_PATH);
2108 
2109  PATH_UnlockPath(flat_path);
2110  PATH_Delete(flat_path->BaseObject.hHmgr);
2111  pNewPath->state = PATH_Closed;
2112  PATH_UnlockPath(pNewPath);
2113  return pNewPath;
2114 }
2115 
2116 static
2117 PPATH
2118 FASTCALL
2120 {
2121  PPATH pPath, pNewPath;
2122 
2123  pPath = PATH_LockPath(dc->dclevel.hPath);
2124  if (!pPath)
2125  {
2127  return NULL;
2128  }
2129 
2130  pNewPath = PATH_WidenPathEx(dc, pPath);
2131  PATH_UnlockPath(pPath);
2132  return pNewPath;
2133 }
2134 
2135 PPATH
2136 FASTCALL
2138 {
2139  INT size;
2140  UINT penWidth, penStyle;
2141  DWORD obj_type;
2142  LPEXTLOGPEN elp;
2143  PDC_ATTR pdcattr = dc->pdcattr;
2144 
2145  if (pPath->state != PATH_Closed)
2146  {
2147  TRACE("PWP 1\n");
2149  return NULL;
2150  }
2151 
2152  size = GreGetObject(pdcattr->hpen, 0, NULL);
2153  if (!size)
2154  {
2155  TRACE("PWP 2\n");
2157  return NULL;
2158  }
2159 
2161  if (elp == NULL)
2162  {
2163  TRACE("PWP 3\n");
2165  return NULL;
2166  }
2167 
2168  GreGetObject(pdcattr->hpen, size, elp);
2169 
2170  obj_type = GDI_HANDLE_GET_TYPE(pdcattr->hpen);
2171  if (obj_type == GDI_OBJECT_TYPE_PEN)
2172  {
2173  penStyle = ((LOGPEN*)elp)->lopnStyle;
2174  }
2175  else if (obj_type == GDI_OBJECT_TYPE_EXTPEN)
2176  {
2177  penStyle = elp->elpPenStyle;
2178  }
2179  else
2180  {
2181  TRACE("PWP 4\n");
2184  return NULL;
2185  }
2186 
2187  penWidth = elp->elpWidth;
2189 
2190  /* The function cannot apply to cosmetic pens */
2191  if (obj_type == GDI_OBJECT_TYPE_EXTPEN &&
2192  (PS_TYPE_MASK & penStyle) == PS_COSMETIC)
2193  {
2194  TRACE("PWP 5\n");
2196  return FALSE;
2197  }
2198 
2199  return IntGdiWidenPath(pPath, penWidth, penStyle, dc->dclevel.laPath.eMiterLimit);
2200 }
2201 
2202 static inline INT int_from_fixed(FIXED f)
2203 {
2204  return (f.fract >= 0x8000) ? (f.value + 1) : f.value;
2205 }
2206 
2207 /**********************************************************************
2208  * PATH_BezierTo
2209  *
2210  * Internally used by PATH_add_outline
2211  */
2212 static
2213 VOID
2214 FASTCALL
2216  PPATH pPath,
2217  POINT *lppt,
2218  INT n)
2219 {
2220  if (n < 2) return;
2221 
2222  if (n == 2)
2223  {
2224  PATH_AddEntry(pPath, &lppt[1], PT_LINETO);
2225  }
2226  else if (n == 3)
2227  {
2228  add_points( pPath, lppt, 3, PT_BEZIERTO );
2229  }
2230  else
2231  {
2232  POINT pt[3];
2233  INT i = 0;
2234 
2235  pt[2] = lppt[0];
2236  n--;
2237 
2238  while (n > 2)
2239  {
2240  pt[0] = pt[2];
2241  pt[1] = lppt[i + 1];
2242  pt[2].x = (lppt[i + 2].x + lppt[i + 1].x) / 2;
2243  pt[2].y = (lppt[i + 2].y + lppt[i + 1].y) / 2;
2244  add_points( pPath, pt, 3, PT_BEZIERTO );
2245  n--;
2246  i++;
2247  }
2248 
2249  pt[0] = pt[2];
2250  pt[1] = lppt[i + 1];
2251  pt[2] = lppt[i + 2];
2252  add_points( pPath, pt, 3, PT_BEZIERTO );
2253  }
2254 }
2255 
2256 static
2257 BOOL
2258 FASTCALL
2260  PDC dc,
2261  PPATH pPath,
2262  INT x,
2263  INT y,
2265  DWORD size)
2266 {
2268  POINT pt;
2269  BOOL bResult = FALSE;
2270 
2271  start = header;
2272 
2273  while ((char *)header < (char *)start + size)
2274  {
2275  TTPOLYCURVE *curve;
2276 
2277  if (header->dwType != TT_POLYGON_TYPE)
2278  {
2279  ERR("Unknown header type %lu\n", header->dwType);
2280  goto cleanup;
2281  }
2282 
2283  pt.x = x + int_from_fixed(header->pfxStart.x);
2284  pt.y = y - int_from_fixed(header->pfxStart.y);
2285  PATH_AddEntry(pPath, &pt, PT_MOVETO);
2286 
2287  curve = (TTPOLYCURVE *)(header + 1);
2288 
2289  while ((char *)curve < (char *)header + header->cb)
2290  {
2291  TRACE("curve->wType %d\n", curve->wType);
2292 
2293  switch(curve->wType)
2294  {
2295  case TT_PRIM_LINE:
2296  {
2297  WORD i;
2298 
2299  for (i = 0; i < curve->cpfx; i++)
2300  {
2301  pt.x = x + int_from_fixed(curve->apfx[i].x);
2302  pt.y = y - int_from_fixed(curve->apfx[i].y);
2303  PATH_AddEntry(pPath, &pt, PT_LINETO);
2304  }
2305  break;
2306  }
2307 
2308  case TT_PRIM_QSPLINE:
2309  case TT_PRIM_CSPLINE:
2310  {
2311  WORD i;
2312  POINTFX ptfx;
2313  POINT *pts = ExAllocatePoolWithTag(PagedPool, (curve->cpfx + 1) * sizeof(POINT), TAG_PATH);
2314 
2315  if (!pts) goto cleanup;
2316 
2317  ptfx = *(POINTFX *)((char *)curve - sizeof(POINTFX));
2318 
2319  pts[0].x = x + int_from_fixed(ptfx.x);
2320  pts[0].y = y - int_from_fixed(ptfx.y);
2321 
2322  for (i = 0; i < curve->cpfx; i++)
2323  {
2324  pts[i + 1].x = x + int_from_fixed(curve->apfx[i].x);
2325  pts[i + 1].y = y - int_from_fixed(curve->apfx[i].y);
2326  }
2327 
2328  PATH_BezierTo(pPath, pts, curve->cpfx + 1);
2329 
2331  break;
2332  }
2333 
2334  default:
2335  ERR("Unknown curve type %04x\n", curve->wType);
2336  goto cleanup;
2337  }
2338 
2339  curve = (TTPOLYCURVE *)&curve->apfx[curve->cpfx];
2340  }
2341  header = (TTPOLYGONHEADER *)((char *)header + header->cb);
2342  }
2343 
2344  bResult = TRUE;
2345 
2346 cleanup:
2347  IntGdiCloseFigure(pPath);
2348  return bResult;
2349 }
2350 
2351 /**********************************************************************
2352  * PATH_ExtTextOut
2353  */
2354 BOOL
2355 FASTCALL
2357  PDC dc,
2358  INT x,
2359  INT y,
2360  UINT flags,
2361  const RECTL *lprc,
2362  LPCWSTR str,
2363  UINT count,
2364  const INT *dx)
2365 {
2366  PPATH pPath;
2367  unsigned int idx, ggo_flags = GGO_NATIVE;
2368  POINT offset = {0, 0};
2369 
2370  pPath = PATH_LockPath(dc->dclevel.hPath);
2371  if (!pPath)
2372  {
2373  return FALSE;
2374  }
2375 
2376  if (pPath->state != PATH_Open)
2377  {
2378  ERR("PATH_ExtTextOut not open\n");
2379  return FALSE;
2380  }
2381 
2382  if (!count) return TRUE;
2383  if (flags & ETO_GLYPH_INDEX) ggo_flags |= GGO_GLYPH_INDEX;
2384 
2385  for (idx = 0; idx < count; idx++)
2386  {
2387  MAT2 identity = { {0, 1}, {0, 0}, {0, 0}, {0, 1} };
2388  GLYPHMETRICS gm;
2389  DWORD dwSize;
2390  void *outline;
2391 
2393  str[idx],
2394  ggo_flags,
2395  &gm,
2396  0,
2397  NULL,
2398  &identity,
2399  TRUE);
2400  if (dwSize == GDI_ERROR)
2401  {
2402  // With default DC font,,, bitmap font?
2403  // ExtTextOut on a path with bitmap font selected shouldn't fail.
2404  // This just leads to empty path generated.
2405  // Ref : test_emf_ExtTextOut_on_path
2406  continue;
2407  }
2408 
2409  /* Add outline only if char is printable */
2410  if (dwSize)
2411  {
2413  if (!outline)
2414  {
2415  PATH_UnlockPath(pPath);
2416  return FALSE;
2417  }
2418 
2420  str[idx],
2421  ggo_flags,
2422  &gm,
2423  dwSize,
2424  outline,
2425  &identity,
2426  TRUE);
2427 
2428  PATH_add_outline(dc, pPath, x + offset.x, y + offset.y, outline, dwSize);
2429 
2431  }
2432 
2433  if (dx)
2434  {
2435  if (flags & ETO_PDY)
2436  {
2437  offset.x += dx[idx * 2];
2438  offset.y += dx[idx * 2 + 1];
2439  }
2440  else
2441  offset.x += dx[idx];
2442  }
2443  else
2444  {
2445  offset.x += gm.gmCellIncX;
2446  offset.y += gm.gmCellIncY;
2447  }
2448  }
2449  PATH_UnlockPath(pPath);
2450  return TRUE;
2451 }
2452 
2453 
2454 /***********************************************************************
2455  * Exported functions
2456  */
2457 
2458 BOOL
2459 APIENTRY
2461 {
2462  PDC dc = DC_LockDc(hDC);
2463  if (!dc)
2464  {
2466  return FALSE;
2467  }
2468 
2469  if (!dc->dclevel.hPath)
2470  {
2471  DC_UnlockDc(dc);
2472  return TRUE;
2473  }
2474 
2475  if (!PATH_Delete(dc->dclevel.hPath))
2476  {
2477  DC_UnlockDc(dc);
2478  return FALSE;
2479  }
2480 
2481  dc->dclevel.hPath = 0;
2482  dc->dclevel.flPath &= ~DCPATH_ACTIVE;
2483 
2484  DC_UnlockDc(dc);
2485  return TRUE;
2486 }
2487 
2488 BOOL
2489 APIENTRY
2491 {
2492  PPATH pPath;
2493  PDC dc;
2494 
2495  dc = DC_LockDc(hDC);
2496  if (!dc)
2497  {
2499  return FALSE;
2500  }
2501 
2502  /* If path is already open, do nothing. Check if not Save DC state */
2503  if ((dc->dclevel.flPath & DCPATH_ACTIVE) && !(dc->dclevel.flPath & DCPATH_SAVE))
2504  {
2505  DC_UnlockDc(dc);
2506  return TRUE;
2507  }
2508 
2509  if (dc->dclevel.hPath)
2510  {
2511  TRACE("BeginPath 1 0x%p\n", dc->dclevel.hPath);
2512  if (!(dc->dclevel.flPath & DCPATH_SAVE))
2513  {
2514  // Remove previous handle.
2515  if (!PATH_Delete(dc->dclevel.hPath))
2516  {
2517  DC_UnlockDc(dc);
2518  return FALSE;
2519  }
2520  }
2521  else
2522  {
2523  // Clear flags and Handle.
2524  dc->dclevel.flPath &= ~(DCPATH_SAVE | DCPATH_ACTIVE);
2525  dc->dclevel.hPath = NULL;
2526  }
2527  }
2529  dc->dclevel.flPath |= DCPATH_ACTIVE; // Set active ASAP!
2530  dc->dclevel.hPath = pPath->BaseObject.hHmgr;
2531  IntGetCurrentPositionEx(dc, &pPath->pos);
2532  IntLPtoDP( dc, &pPath->pos, 1 );
2533  TRACE("BP : Current pos X %d Y %d\n",pPath->pos.x, pPath->pos.y);
2534  PATH_UnlockPath(pPath);
2535  DC_UnlockDc(dc);
2536 
2537  if (!pPath)
2538  {
2539  return FALSE;
2540  }
2541  return TRUE;
2542 }
2543 
2544 BOOL
2545 APIENTRY
2547 {
2548  BOOL Ret = FALSE; // Default to failure
2549  PDC pDc;
2550  PPATH pPath;
2551 
2552  TRACE("Enter %s\n", __FUNCTION__);
2553 
2554  pDc = DC_LockDc(hDC);
2555  if (!pDc)
2556  {
2558  return FALSE;
2559  }
2560 
2561  pPath = PATH_LockPath(pDc->dclevel.hPath);
2562  if (!pPath)
2563  {
2564  DC_UnlockDc(pDc);
2565  return FALSE;
2566  }
2567 
2568  if (pPath->state == PATH_Open)
2569  {
2570  IntGdiCloseFigure(pPath);
2571  Ret = TRUE;
2572  }
2573  else
2574  {
2576  }
2577 
2578  PATH_UnlockPath(pPath);
2579  DC_UnlockDc(pDc);
2580  return Ret;
2581 }
2582 
2583 BOOL
2584 APIENTRY
2586 {
2587  BOOL ret = TRUE;
2588  PPATH pPath;
2589  PDC dc;
2590 
2591  dc = DC_LockDc(hDC);
2592  if (!dc)
2593  {
2595  return FALSE;
2596  }
2597 
2598  pPath = PATH_LockPath(dc->dclevel.hPath);
2599  if (!pPath)
2600  {
2601  DC_UnlockDc(dc);
2602  return FALSE;
2603  }
2604 
2605  /* Check that path is currently being constructed */
2606  if ((pPath->state != PATH_Open) || !(dc->dclevel.flPath & DCPATH_ACTIVE))
2607  {
2608  TRACE("EndPath ERROR! 0x%p\n", dc->dclevel.hPath);
2610  ret = FALSE;
2611  }
2612  /* Set flag to indicate that path is finished */
2613  else
2614  {
2615  TRACE("EndPath 0x%p\n", dc->dclevel.hPath);
2616  pPath->state = PATH_Closed;
2617  dc->dclevel.flPath &= ~DCPATH_ACTIVE;
2618  }
2619 
2620  PATH_UnlockPath(pPath);
2621  DC_UnlockDc(dc);
2622  return ret;
2623 }
2624 
2625 BOOL
2626 APIENTRY
2628 {
2629  BOOL ret = FALSE;
2630  PPATH pPath, pNewPath;
2631  PDC_ATTR pdcattr;
2632  PDC dc;
2633 
2634  dc = DC_LockDc(hDC);
2635  if (!dc)
2636  {
2638  return FALSE;
2639  }
2640 
2641  pPath = PATH_LockPath(dc->dclevel.hPath);
2642  if (!pPath)
2643  {
2644  DC_UnlockDc(dc);
2645  return FALSE;
2646  }
2647 
2649 
2650  pdcattr = dc->pdcattr;
2651 
2652  if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
2654 
2655  if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
2657 
2658  pNewPath = PATH_FlattenPath(pPath);
2659 
2660  if (pNewPath->state != PATH_Closed)
2661  {
2663  }
2664  else if (pNewPath->numEntriesUsed)
2665  {
2666  ret = PATH_FillPath(dc, pNewPath);
2667  }
2668  else ret = TRUE;
2669 
2670  PATH_UnlockPath(pNewPath);
2671  PATH_Delete(pNewPath->BaseObject.hHmgr);
2672 
2673  PATH_UnlockPath(pPath);
2674  PATH_Delete(pPath->BaseObject.hHmgr);
2675  dc->dclevel.hPath = 0;
2676  dc->dclevel.flPath &= ~DCPATH_ACTIVE;
2677 
2679  DC_UnlockDc(dc);
2680  return ret;
2681 }
2682 
2683 BOOL
2684 APIENTRY
2686 {
2687  BOOL Ret = FALSE;
2688  DC *pDc;
2689  PPATH pPath, pNewPath = NULL;
2690 
2691  TRACE("Enter %s\n", __FUNCTION__);
2692 
2693  pDc = DC_LockDc(hDC);
2694  if (!pDc)
2695  {
2697  return FALSE;
2698  }
2699 
2700  pPath = PATH_LockPath(pDc->dclevel.hPath);
2701  if (!pPath)
2702  {
2704  DC_UnlockDc(pDc);
2705  return FALSE;
2706  }
2707 
2708  if (pPath->state == PATH_Closed)
2709  {
2710  pNewPath = PATH_FlattenPath(pPath);
2711  }
2712 
2713  PATH_UnlockPath(pPath);
2714 
2715  if (pNewPath)
2716  {
2717  PATH_Delete(pDc->dclevel.hPath);
2718  pDc->dclevel.hPath = pNewPath->BaseObject.hHmgr;
2719  PATH_UnlockPath(pNewPath);
2720  Ret = TRUE;
2721  }
2722 
2723  DC_UnlockDc(pDc);
2724  return Ret;
2725 }
2726 
2727 _Success_(return != FALSE)
2728 BOOL
2729 APIENTRY
2730 NtGdiGetMiterLimit(
2731  _In_ HDC hdc,
2733 {
2734  DC *pDc;
2735  BOOL bResult = TRUE;
2736 
2737  if (!(pDc = DC_LockDc(hdc)))
2738  {
2740  return FALSE;
2741  }
2742 
2743  _SEH2_TRY
2744  {
2745  ProbeForWrite(pdwOut, sizeof(DWORD), 1);
2746  *pdwOut = pDc->dclevel.laPath.eMiterLimit;
2747  }
2749  {
2751  bResult = FALSE;
2752  }
2753  _SEH2_END;
2754 
2755  DC_UnlockDc(pDc);
2756  return bResult;
2757 
2758 }
2759 
2760 INT
2761 APIENTRY
2763  HDC hDC,
2764  LPPOINT Points,
2765  LPBYTE Types,
2766  INT nSize)
2767 {
2768  INT ret = -1;
2769  PPATH pPath;
2770  DC *dc;
2771 
2772  _SEH2_TRY
2773  {
2774  ProbeForWrite(Points, nSize * sizeof(*Points), sizeof(ULONG));
2775  ProbeForWrite(Types, nSize, 1);
2776  }
2778  {
2780  _SEH2_YIELD(return -1);
2781  }
2782  _SEH2_END
2783 
2784  dc = DC_LockDc(hDC);
2785  TRACE("NtGdiGetPath start\n");
2786  if (!dc)
2787  {
2788  ERR("Can't lock dc!\n");
2790  return -1;
2791  }
2792 
2793  pPath = PATH_LockPath(dc->dclevel.hPath);
2794  if (!pPath)
2795  {
2796  DC_UnlockDc(dc);
2797  return -1;
2798  }
2799 
2800  if (pPath->state != PATH_Closed)
2801  {
2803  goto done;
2804  }
2805 
2806  if (nSize == 0)
2807  {
2808  ret = pPath->numEntriesUsed;
2809  }
2810  else if (nSize < pPath->numEntriesUsed)
2811  {
2813  goto done;
2814  }
2815  else
2816  {
2817  _SEH2_TRY
2818  {
2819  memcpy(Points, pPath->pPoints, sizeof(POINT)*pPath->numEntriesUsed);
2820  memcpy(Types, pPath->pFlags, sizeof(BYTE)*pPath->numEntriesUsed);
2821 
2822  /* Convert the points to logical coordinates */
2823  if (!GdiPathDPtoLP(dc, Points, pPath->numEntriesUsed))
2824  {
2826  _SEH2_LEAVE;
2827  }
2828 
2829  ret = pPath->numEntriesUsed;
2830  }
2832  {
2834  }
2835  _SEH2_END
2836  }
2837 
2838 done:
2839  TRACE("NtGdiGetPath exit %d\n",ret);
2840  PATH_UnlockPath(pPath);
2841  DC_UnlockDc(dc);
2842  return ret;
2843 }
2844 
2845 HRGN
2846 APIENTRY
2848 {
2849  PPATH pPath, pNewPath;
2850  HRGN hrgnRval = 0;
2851  int Ret;
2852  PREGION Rgn;
2853  DC *pDc;
2854  PDC_ATTR pdcattr;
2855 
2856  TRACE("Enter %s\n", __FUNCTION__);
2857 
2858  pDc = DC_LockDc(hDC);
2859  if (!pDc)
2860  {
2861  ERR("Failed to lock DC %p\n", hDC);
2863  return NULL;
2864  }
2865 
2866  pdcattr = pDc->pdcattr;
2867 
2868  pPath = PATH_LockPath(pDc->dclevel.hPath);
2869  if (!pPath)
2870  {
2871  ERR("Failed to lock DC path %p\n", pDc->dclevel.hPath);
2872  DC_UnlockDc(pDc);
2873  return NULL;
2874  }
2875 
2876  if (pPath->state != PATH_Closed)
2877  {
2878  // FIXME: Check that setlasterror is being called correctly
2879  ERR("Path is not closed!\n");
2881  }
2882  else
2883  {
2884  /* Create the region and fill it with the path strokes */
2886  if (!Rgn)
2887  {
2888  ERR("Failed to allocate a region\n");
2889  PATH_UnlockPath(pPath);
2890  DC_UnlockDc(pDc);
2891  return NULL;
2892  }
2893  hrgnRval = Rgn->BaseObject.hHmgr;
2894 
2895  pNewPath = PATH_FlattenPath(pPath);
2896 
2897  Ret = PATH_PathToRegion(pNewPath, pdcattr->jFillMode, Rgn);
2898 
2899  PATH_UnlockPath(pNewPath);
2900  PATH_Delete(pNewPath->BaseObject.hHmgr);
2901 
2902  if (!Ret)
2903  {
2904  ERR("PATH_PathToRegion failed\n");
2905  REGION_Delete(Rgn);
2906  hrgnRval = NULL;
2907  }
2908  else
2909  REGION_UnlockRgn(Rgn);
2910  }
2911 
2912  PATH_UnlockPath(pPath);
2913  PATH_Delete(pDc->dclevel.hPath);
2914  pDc->dclevel.hPath = NULL;
2915  pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
2916 
2917  DC_UnlockDc(pDc);
2918  return hrgnRval;
2919 }
2920 
2921 BOOL
2922 APIENTRY
2924  IN HDC hdc,
2925  IN DWORD dwNew,
2927 {
2928  DC *pDc;
2929  gxf_long worker, worker1;
2930  BOOL bResult = TRUE;
2931 
2932  if (!(pDc = DC_LockDc(hdc)))
2933  {
2935  return FALSE;
2936  }
2937 
2938  worker.l = dwNew;
2939  worker1.f = pDc->dclevel.laPath.eMiterLimit;
2940  pDc->dclevel.laPath.eMiterLimit = worker.f;
2941 
2942  if (pdwOut)
2943  {
2944  _SEH2_TRY
2945  {
2946  ProbeForWrite(pdwOut, sizeof(DWORD), 1);
2947  *pdwOut = worker1.l;
2948  }
2950  {
2952  bResult = FALSE;
2953  }
2954  _SEH2_END;
2955  }
2956 
2957  DC_UnlockDc(pDc);
2958  return bResult;
2959 }
2960 
2961 BOOL
2962 APIENTRY
2964 {
2965  DC *pDc;
2966  PDC_ATTR pdcattr;
2967  PPATH pPath, pNewPath;
2968  BOOL bRet = FALSE;
2969 
2970  TRACE("Enter %s\n", __FUNCTION__);
2971 
2972  if (!(pDc = DC_LockDc(hDC)))
2973  {
2975  return FALSE;
2976  }
2977  pPath = PATH_LockPath(pDc->dclevel.hPath);
2978  if (!pPath)
2979  {
2980  DC_UnlockDc(pDc);
2981  return FALSE;
2982  }
2983 
2985 
2986  pdcattr = pDc->pdcattr;
2987 
2988  if (pdcattr->ulDirty_ & (DIRTY_FILL | DC_BRUSH_DIRTY))
2989  DC_vUpdateFillBrush(pDc);
2990 
2991  if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
2992  DC_vUpdateLineBrush(pDc);
2993 
2994  pNewPath = PATH_FlattenPath(pPath);
2995 
2996  if (pNewPath->state != PATH_Closed)
2997  {
2999  }
3000  else if (pNewPath->numEntriesUsed)
3001  {
3002  bRet = PATH_FillPath(pDc, pNewPath);
3003  if (bRet) bRet = PATH_StrokePath(pDc, pNewPath);
3004  }
3005  else bRet = TRUE;
3006 
3007  PATH_UnlockPath(pNewPath);
3008  PATH_Delete(pNewPath->BaseObject.hHmgr);
3009 
3010  PATH_UnlockPath(pPath);
3011  PATH_Delete(pPath->BaseObject.hHmgr);
3012  pDc->dclevel.hPath = 0;
3013  pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
3014 
3015  DC_vFinishBlit(pDc, NULL);
3016  DC_UnlockDc(pDc);
3017  return bRet;
3018 }
3019 
3020 BOOL
3021 APIENTRY
3023 {
3024  DC *pDc;
3025  PDC_ATTR pdcattr;
3026  PPATH pPath, pNewPath;
3027  BOOL bRet = FALSE;
3028 
3029  TRACE("Enter %s\n", __FUNCTION__);
3030 
3031  if (!(pDc = DC_LockDc(hDC)))
3032  {
3034  return FALSE;
3035  }
3036 
3037  pPath = PATH_LockPath(pDc->dclevel.hPath);
3038  if (!pPath)
3039  {
3040  DC_UnlockDc(pDc);
3041  return FALSE;
3042  }
3043 
3045 
3046  pdcattr = pDc->pdcattr;
3047 
3048  if (pdcattr->ulDirty_ & (DIRTY_LINE | DC_PEN_DIRTY))
3049  DC_vUpdateLineBrush(pDc);
3050 
3051  pNewPath = PATH_FlattenPath(pPath);
3052 
3053  if (pNewPath->state != PATH_Closed)
3054  {
3056  }
3057  else bRet = PATH_StrokePath(pDc, pNewPath);
3058 
3059  PATH_UnlockPath(pNewPath);
3060  PATH_Delete(pNewPath->BaseObject.hHmgr);
3061 
3062  DC_vFinishBlit(pDc, NULL);
3063 
3064  PATH_UnlockPath(pPath);
3065  PATH_Delete(pPath->BaseObject.hHmgr);
3066  pDc->dclevel.hPath = 0;
3067  pDc->dclevel.flPath &= ~DCPATH_ACTIVE;
3068 
3069  DC_UnlockDc(pDc);
3070  return bRet;
3071 }
3072 
3073 BOOL
3074 APIENTRY
3076 {
3077  PPATH pPath;
3078  BOOL Ret = FALSE;
3079  PDC pdc = DC_LockDc(hDC);
3080  TRACE("NtGdiWidenPat Enter\n");
3081  if (!pdc)
3082  {
3084  return FALSE;
3085  }
3086 
3087  pPath = PATH_WidenPath(pdc);
3088  if (pPath)
3089  {
3090  TRACE("WindenPath New Path\n");
3091  PATH_Delete(pdc->dclevel.hPath);
3092  pdc->dclevel.hPath = pPath->BaseObject.hHmgr;
3093  Ret = TRUE;
3094  }
3095  DC_UnlockDc(pdc);
3096  TRACE("NtGdiWidenPat Ret %d\n",Ret);
3097  return Ret;
3098 }
3099 
3100 /* EOF */
_STLP_DECLSPEC complex< float > _STLP_CALL sqrt(const complex< float > &)
Definition: complex.cpp:188
_In_ CLIPOBJ _In_ BRUSHOBJ _In_ LONG _In_ LONG y1
Definition: winddi.h:3706
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_Success_(return !=FALSE)
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_Check_return_ _CRTIMP double __cdecl ceil(_In_ double x)
FLOAT f
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BASEOBJECT BaseObject
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int APIENTRY IntGdiSetMapMode(PDC dc, int MapMode)
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BOOL FASTCALL PATH_AddEntry(PPATH pPath, const POINT *pPoint, BYTE flags)
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_In_ int _Inout_ LPRECT lprc
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FORCEINLINE PDC DC_LockDc(HDC hdc)
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_In_ ULONG Mode
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static BOOLEAN PATH_ScaleNormalizedPoint(POINT corners[], FLOATL x, FLOATL y, POINT *pPoint)
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FORCEINLINE VOID XFORMOBJ_vInit(OUT XFORMOBJ *pxo, IN MATRIX *pmx)
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_STLP_DECLSPEC complex< float > _STLP_CALL cos(const complex< float > &)
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GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
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Definition: gdiobj.c:880
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Definition: main.c:9
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Definition: coord.h:200
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Definition: winddi.h:2816
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Definition: winddi.h:2821
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Definition: path.c:2546
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Definition: mesh.c:5329
#define GROW_FACTOR_DENOM
Definition: path.c:24
unsigned char BYTE
Definition: xxhash.c:193
short gmCellIncX
Definition: wingdi.h:2445
BOOL PATH_RoundRect(DC *dc, INT x1, INT y1, INT x2, INT y2, INT ell_width, INT ell_height)
Definition: path.c:675
static INT int_from_fixed(FIXED f)
Definition: path.c:2202
_Check_return_ _CRT_JIT_INTRINSIC double __cdecl fabs(_In_ double x)
Definition: fabs.c:17
static const FLOATOBJ gef2
Definition: floatobj.h:115
static BOOLEAN IntDPtoLP(DC *pdc, PPOINTL ppt, UINT count)
Definition: coord.h:192
#define ERR(fmt,...)
Definition: debug.h:110
BOOL APIENTRY NtGdiFillPath(HDC hDC)
Definition: path.c:2627
#define FLOATOBJ_SetLong(pf, l)
Definition: winddi.h:2815
FLOAT FLOATL
Definition: winddi.h:114
static HDC hDC
Definition: 3dtext.c:33
FORCEINLINE VOID RECTL_vSetRect(_Out_ RECTL *prcl, _In_ LONG left, _In_ LONG top, _In_ LONG right, _In_ LONG bottom)
Definition: rect.h:5
BOOL APIENTRY NtGdiSetMiterLimit(IN HDC hdc, IN DWORD dwNew, IN OUT OPTIONAL PDWORD pdwOut)
Definition: path.c:2923
BOOL IntGdiFillRgn(_In_ PDC pdc, _In_ PREGION prgn, _In_opt_ PBRUSH pbrFill)
Definition: bitblt.c:1186
_SEH2_END
Definition: create.c:4400
#define PS_TYPE_MASK
Definition: wingdi.h:603
static unsigned __int64 next
Definition: rand_nt.c:6
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
FORCEINLINE VOID DC_UnlockDc(PDC pdc)
Definition: dc.h:235
static BOOL FASTCALL PATH_add_outline(PDC dc, PPATH pPath, INT x, INT y, TTPOLYGONHEADER *header, DWORD size)
Definition: path.c:2259
BOOL FASTCALL PATH_AssignGdiPath(PPATH pPathDest, const PPATH pPathSrc)
Definition: path.c:166
Definition: path.h:19
static calc_node_t temp
Definition: rpn_ieee.c:38
GLuint start
Definition: gl.h:1545
#define IntIsEffectiveWidePen(pbrLine)
Definition: pen.h:33
BOOL FASTCALL PATH_ExtTextOut(PDC dc, INT x, INT y, UINT flags, const RECTL *lprc, LPCWSTR str, UINT count, const INT *dx)
Definition: path.c:2356
GLenum GLenum dst
Definition: glext.h:6340
BOOL FASTCALL PATH_FillPathEx(PDC dc, PPATH pPath, PBRUSH pbrFill)
Definition: path.c:1515
BOOL newStroke
Definition: path.h:57
ULONG FASTCALL ftGdiGetGlyphOutline(PDC dc, WCHAR wch, UINT iFormat, LPGLYPHMETRICS pgm, ULONG cjBuf, PVOID pvBuf, LPMAT2 pmat2, BOOL bIgnoreRotation)
Definition: freetype.c:3761
#define PS_ENDCAP_FLAT
Definition: wingdi.h:596
#define PS_ENDCAP_MASK
Definition: wingdi.h:602
int xOffset
Definition: appswitch.c:59
BOOL FASTCALL PATH_Arc(PDC dc, INT x1, INT y1, INT x2, INT y2, INT xStart, INT yStart, INT xEnd, INT yEnd, INT direction, INT lines)
Definition: path.c:955
#define PS_JOIN_MASK
Definition: wingdi.h:600
unsigned int * PULONG
Definition: retypes.h:1
#define min(a, b)
Definition: monoChain.cc:55
unsigned int UINT
Definition: ndis.h:50
FORCEINLINE PSIZEL DC_pszlViewportExt(PDC pdc)
Definition: coord.h:111
#define NULL
Definition: types.h:112
VOID FASTCALL PATH_InitGdiPath(PPATH pPath)
Definition: path.c:142
#define DC_BRUSH_DIRTY
Definition: ntgdihdl.h:135
VOID FASTCALL DC_vPrepareDCsForBlit(PDC pdcDest, const RECT *rcDest, PDC pdcSrc, const RECT *rcSrc)
Definition: dclife.c:505
ENGAPI INT APIENTRY EngMulDiv(_In_ INT a, _In_ INT b, _In_ INT c)
Definition: math.c:26
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLint dx
Definition: linetemp.h:97
DWORD * PDWORD
Definition: pedump.c:68
BOOL APIENTRY NtGdiFlattenPath(HDC hDC)
Definition: path.c:2685
BOOL FASTCALL PATH_AddFlatBezier(PPATH pPath, POINT *pt, BOOL closed)
Definition: path.c:1378
_In_ CLIPOBJ _In_ BRUSHOBJ _In_ LONG _In_ LONG _In_ LONG x2
Definition: winddi.h:3706
FORCEINLINE LONG RECTL_lGetHeight(_In_ const RECTL *prcl)
Definition: rect.h:86
#define ETO_PDY
Definition: wingdi.h:657
VOID FASTCALL DC_vFinishBlit(PDC pdc1, PDC pdc2)
Definition: dclife.c:614
#define MWT_IDENTITY
Definition: wingdi.h:944
void * Realloc(void *, size_t)
#define CoordLPtoDP(pdc, ppt)
Definition: coord.h:187
#define NUM_ENTRIES_INITIAL
Definition: path.c:21
VOID FASTCALL REGION_UnlockRgn(_In_ PREGION prgn)
Definition: region.c:2392
#define PATH_AllocPathWithHandle()
Definition: path.h:69
#define MM_TEXT
Definition: wingdi.h:873
#define PT_CLOSEFIGURE
Definition: wingdi.h:887
#define OUT
Definition: typedefs.h:40
BOOL FASTCALL GdiPathDPtoLP(PDC pdc, PPOINT ppt, INT count)
Definition: path.c:125
#define GROW_FACTOR_NUMER
Definition: path.c:23
#define PT_LINETO
Definition: wingdi.h:885
GLclampf GLclampf GLclampf alpha
Definition: gl.h:1740
float FLOAT
Definition: typedefs.h:69
#define PT_MOVETO
Definition: wingdi.h:884
BOOL FASTCALL PATH_ReserveEntries(PPATH pPath, INT numEntries)
Definition: path.c:296
SIZEL szlViewportExt
Definition: ntgdihdl.h:340
unsigned int ULONG
Definition: retypes.h:1
BASEOBJECT BaseObject
Definition: path.h:36
BOOL FASTCALL IntGdiMoveToEx(DC *dc, int X, int Y, LPPOINT Point)
Definition: line.c:78
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
#define DIRTY_LINE
Definition: ntgdihdl.h:124
char * cleanup(char *str)
Definition: wpickclick.c:99
static const WCHAR dc[]
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
FLONG state
Definition: path.h:52
_Out_ PDWORD pdwOut
Definition: ntgdi.h:1813
static BOOL PATH_DoArcPart(PPATH pPath, POINT corners[], double angleStart, double angleEnd, BYTE startEntryType)
Definition: path.c:890
#define _SEH2_EXCEPT(...)
Definition: pseh2_64.h:40
int yOffset
Definition: appswitch.c:59
_STLP_DECLSPEC complex< float > _STLP_CALL sin(const complex< float > &)
GLdouble GLdouble GLdouble GLdouble top
Definition: glext.h:10859
GLuint GLuint GLsizei GLenum type
Definition: gl.h:1545
#define _SEH2_GetExceptionCode()
Definition: pseh2_64.h:165
#define _SEH2_YIELD(__stmt)
Definition: pseh2_64.h:168
#define _SEH2_LEAVE
Definition: filesup.c:20
GLboolean GLboolean GLboolean GLboolean a
Definition: glext.h:6204
#define PT_BEZIERTO
Definition: wingdi.h:886
_Check_return_ _CRTIMP double __cdecl floor(_In_ double x)
static VOID PATH_NormalizePoint(POINTL corners[], const POINTL *pPoint, FLOATL *pX, FLOATL *pY)
Definition: path.c:401
PREGION FASTCALL REGION_AllocUserRgnWithHandle(INT nRgn)
Definition: region.c:2313
#define GDI_ERROR
Definition: wingdi.h:1309
#define __FUNCTION__
Definition: types.h:112
#define TT_PRIM_LINE
Definition: wingdi.h:1319
#define memset(x, y, z)
Definition: compat.h:39
#define ExFreePoolWithTag(_P, _T)
Definition: module.h:1099
VOID FASTCALL REGION_Delete(PREGION pRgn)
Definition: region.c:2468
LONG cy
Definition: windef.h:335
static BOOLEAN INTERNAL_LPTODP(DC *dc, LPPOINT points, UINT count)
Definition: coord.h:47
VOID FASTCALL RECTL_vMakeWellOrdered(_Inout_ RECTL *prcl)
Definition: rect.c:81
PSDBQUERYRESULT_VISTA PVOID DWORD * dwSize
Definition: env.c:56
struct CFHEADER header
Definition: fdi.c:101
BOOL FASTCALL PATH_Delete(HPATH hPath)
Definition: path.c:90
ENGAPI VOID APIENTRY EngSetLastError(_In_ ULONG iError)
Definition: error.c:28
INT NTAPI GreGetObject(IN HGDIOBJ hobj, IN INT cbCount, OUT PVOID pvBuffer)
Definition: gdiobj.c:1264
#define APIENTRY
Definition: api.h:79
POINTL ptlWindowOrg
Definition: ntgdihdl.h:337
#define ERROR_OUTOFMEMORY
Definition: deptool.c:13
BOOL FASTCALL PATH_FillPath(PDC dc, PPATH pPath)
Definition: path.c:1506
FIXED x
Definition: wingdi.h:2708
VOID FASTCALL DC_vUpdateFillBrush(PDC pdc)
Definition: dcobjs.c:16
static BYTE * add_log_points(DC *dc, PPATH path, const POINT *points, DWORD count, BYTE type)
Definition: path.c:463
static BOOLEAN IntLPtoDP(DC *pdc, PPOINTL ppt, UINT count)
Definition: coord.h:182
#define GM_ADVANCED
Definition: wingdi.h:865
INT iGraphicsMode
Definition: ntgdihdl.h:302
PULONG MinorVersion OPTIONAL
Definition: CrossNt.h:68