2 * ReactOS W32 Subsystem
3 * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #define NUM_ENTRIES_INITIAL 16 /* Initial size of points / flags arrays */
27 #define GROW_FACTOR_NUMER 2 /* Numerator of grow factor for the array */
28 #define GROW_FACTOR_DENOM 1 /* Denominator of grow factor */
30 BOOL FASTCALL
PATH_AddEntry (PPATH pPath
, const POINT
*pPoint
, BYTE flags
);
31 BOOL FASTCALL
PATH_AddFlatBezier (PPATH pPath
, POINT
*pt
, BOOL closed
);
32 BOOL FASTCALL
PATH_DoArcPart (PPATH pPath
, FLOAT_POINT corners
[], double angleStart
, double angleEnd
, BYTE startEntryType
);
33 BOOL FASTCALL
PATH_FillPath( PDC dc
, PPATH pPath
);
34 BOOL FASTCALL
PATH_FlattenPath (PPATH pPath
);
35 VOID FASTCALL
PATH_NormalizePoint (FLOAT_POINT corners
[], const FLOAT_POINT
*pPoint
, double *pX
, double *pY
);
37 BOOL FASTCALL
PATH_ReserveEntries (PPATH pPath
, INT numEntries
);
38 VOID FASTCALL
PATH_ScaleNormalizedPoint (FLOAT_POINT corners
[], double x
, double y
, POINT
*pPoint
);
39 BOOL FASTCALL
PATH_StrokePath(DC
*dc
, PPATH pPath
);
40 BOOL
PATH_CheckCorners(DC
*dc
, POINT corners
[], INT x1
, INT y1
, INT x2
, INT y2
);
42 VOID FASTCALL
IntGetCurrentPositionEx(PDC dc
, LPPOINT pt
);
44 /***********************************************************************
50 PATH_Delete(HPATH hPath
)
52 if (!hPath
) return FALSE
;
53 PPATH pPath
= PATH_LockPath( hPath
);
54 if (!pPath
) return FALSE
;
55 PATH_DestroyGdiPath( pPath
);
56 PATH_UnlockPath( pPath
);
57 PATH_FreeExtPathByHandle(hPath
);
64 IntGdiCloseFigure(PPATH pPath
)
66 ASSERT(pPath
->state
== PATH_Open
);
68 // FIXME: Shouldn't we draw a line to the beginning of the figure?
69 // Set PT_CLOSEFIGURE on the last entry and start a new stroke
70 if(pPath
->numEntriesUsed
)
72 pPath
->pFlags
[pPath
->numEntriesUsed
-1]|=PT_CLOSEFIGURE
;
73 pPath
->newStroke
=TRUE
;
83 PATH_FillPath( PDC dc
, PPATH pPath
)
85 INT mapMode
, graphicsMode
;
86 SIZE ptViewportExt
, ptWindowExt
;
87 POINTL ptViewportOrg
, ptWindowOrg
;
90 PDC_ATTR Dc_Attr
= dc
->pDc_Attr
;
92 if(!Dc_Attr
) Dc_Attr
= &dc
->Dc_Attr
;
94 if( pPath
->state
!= PATH_Closed
)
96 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
100 if( PATH_PathToRegion( pPath
, Dc_Attr
->jFillMode
, &hrgn
))
102 /* Since PaintRgn interprets the region as being in logical coordinates
103 * but the points we store for the path are already in device
104 * coordinates, we have to set the mapping mode to MM_TEXT temporarily.
105 * Using SaveDC to save information about the mapping mode / world
106 * transform would be easier but would require more overhead, especially
107 * now that SaveDC saves the current path.
110 /* Save the information about the old mapping mode */
111 mapMode
= Dc_Attr
->iMapMode
;
112 ptViewportExt
= Dc_Attr
->szlViewportExt
;
113 ptViewportOrg
= Dc_Attr
->ptlViewportOrg
;
114 ptWindowExt
= Dc_Attr
->szlWindowExt
;
115 ptWindowOrg
= Dc_Attr
->ptlWindowOrg
;
117 /* Save world transform
118 * NB: The Windows documentation on world transforms would lead one to
119 * believe that this has to be done only in GM_ADVANCED; however, my
120 * tests show that resetting the graphics mode to GM_COMPATIBLE does
121 * not reset the world transform.
123 MatrixS2XForm(&xform
, &dc
->DcLevel
.mxWorldToPage
);
126 // IntGdiSetMapMode( dc, MM_TEXT );
127 // Dc_Attr->ptlViewportOrg.x = 0;
128 // Dc_Attr->ptlViewportOrg.y = 0;
129 // Dc_Attr->ptlWindowOrg.x = 0;
130 // Dc_Attr->ptlWindowOrg.y = 0;
132 graphicsMode
= Dc_Attr
->iGraphicsMode
;
133 // Dc_Attr->iGraphicsMode = GM_ADVANCED;
134 // IntGdiModifyWorldTransform( dc, &xform, MWT_IDENTITY );
135 // Dc_Attr->iGraphicsMode = graphicsMode;
137 /* Paint the region */
138 IntGdiPaintRgn( dc
, hrgn
);
139 NtGdiDeleteObject( hrgn
);
140 /* Restore the old mapping mode */
141 // IntGdiSetMapMode( dc, mapMode );
142 // Dc_Attr->szlViewportExt = ptViewportExt;
143 // Dc_Attr->ptlViewportOrg = ptViewportOrg;
144 // Dc_Attr->szlWindowExt = ptWindowExt;
145 // Dc_Attr->ptlWindowOrg = ptWindowOrg;
147 /* Go to GM_ADVANCED temporarily to restore the world transform */
148 graphicsMode
= Dc_Attr
->iGraphicsMode
;
149 // Dc_Attr->iGraphicsMode = GM_ADVANCED;
150 // IntGdiModifyWorldTransform( dc, &xform, MWT_MAX+1 );
151 // Dc_Attr->iGraphicsMode = graphicsMode;
159 * Initializes the GdiPath structure.
163 PATH_InitGdiPath ( PPATH pPath
)
167 pPath
->state
=PATH_Null
;
170 pPath
->numEntriesUsed
=0;
171 pPath
->numEntriesAllocated
=0;
174 /* PATH_DestroyGdiPath
176 * Destroys a GdiPath structure (frees the memory in the arrays).
180 PATH_DestroyGdiPath ( PPATH pPath
)
184 if (pPath
->pPoints
) ExFreePool(pPath
->pPoints
);
185 if (pPath
->pFlags
) ExFreePool(pPath
->pFlags
);
188 /* PATH_AssignGdiPath
190 * Copies the GdiPath structure "pPathSrc" to "pPathDest". A deep copy is
191 * performed, i.e. the contents of the pPoints and pFlags arrays are copied,
192 * not just the pointers. Since this means that the arrays in pPathDest may
193 * need to be resized, pPathDest should have been initialized using
194 * PATH_InitGdiPath (in C++, this function would be an assignment operator,
195 * not a copy constructor).
196 * Returns TRUE if successful, else FALSE.
200 PATH_AssignGdiPath ( PPATH pPathDest
, const PPATH pPathSrc
)
202 ASSERT(pPathDest
!=NULL
&& pPathSrc
!=NULL
);
204 /* Make sure destination arrays are big enough */
205 if ( !PATH_ReserveEntries(pPathDest
, pPathSrc
->numEntriesUsed
) )
208 /* Perform the copy operation */
209 memcpy(pPathDest
->pPoints
, pPathSrc
->pPoints
,
210 sizeof(POINT
)*pPathSrc
->numEntriesUsed
);
211 memcpy(pPathDest
->pFlags
, pPathSrc
->pFlags
,
212 sizeof(BYTE
)*pPathSrc
->numEntriesUsed
);
214 pPathDest
->state
=pPathSrc
->state
;
215 pPathDest
->numEntriesUsed
=pPathSrc
->numEntriesUsed
;
216 pPathDest
->newStroke
=pPathSrc
->newStroke
;
222 * Should be called when a MoveTo is performed on a DC that has an
223 * open path. This starts a new stroke. Returns TRUE if successful, else
228 PATH_MoveTo ( PDC dc
)
230 PPATH pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
231 if (!pPath
) return FALSE
;
233 /* Check that path is open */
234 if ( pPath
->state
!= PATH_Open
)
236 PATH_UnlockPath( pPath
);
237 /* FIXME: Do we have to call SetLastError? */
240 /* Start a new stroke */
241 pPath
->newStroke
= TRUE
;
242 PATH_UnlockPath( pPath
);
248 * Should be called when a LineTo is performed on a DC that has an
249 * open path. This adds a PT_LINETO entry to the path (and possibly
250 * a PT_MOVETO entry, if this is the first LineTo in a stroke).
251 * Returns TRUE if successful, else FALSE.
255 PATH_LineTo ( PDC dc
, INT x
, INT y
)
259 POINT point
, pointCurPos
;
261 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
262 if (!pPath
) return FALSE
;
264 /* Check that path is open */
265 if ( pPath
->state
!= PATH_Open
)
267 PATH_UnlockPath( pPath
);
271 /* Convert point to device coordinates */
274 CoordLPtoDP ( dc
, &point
);
276 /* Add a PT_MOVETO if necessary */
277 if ( pPath
->newStroke
)
279 pPath
->newStroke
= FALSE
;
280 IntGetCurrentPositionEx ( dc
, &pointCurPos
);
281 CoordLPtoDP ( dc
, &pointCurPos
);
282 if ( !PATH_AddEntry(pPath
, &pointCurPos
, PT_MOVETO
) )
284 PATH_UnlockPath( pPath
);
289 /* Add a PT_LINETO entry */
290 Ret
= PATH_AddEntry(pPath
, &point
, PT_LINETO
);
291 PATH_UnlockPath( pPath
);
297 * Should be called when a call to Rectangle is performed on a DC that has
298 * an open path. Returns TRUE if successful, else FALSE.
302 PATH_Rectangle ( PDC dc
, INT x1
, INT y1
, INT x2
, INT y2
)
305 POINT corners
[2], pointTemp
;
308 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
309 if (!pPath
) return FALSE
;
311 /* Check that path is open */
312 if ( pPath
->state
!= PATH_Open
)
314 PATH_UnlockPath( pPath
);
318 /* Convert points to device coordinates */
323 IntLPtoDP ( dc
, corners
, 2 );
325 /* Make sure first corner is top left and second corner is bottom right */
326 if ( corners
[0].x
> corners
[1].x
)
329 corners
[0].x
=corners
[1].x
;
332 if ( corners
[0].y
> corners
[1].y
)
335 corners
[0].y
=corners
[1].y
;
339 /* In GM_COMPATIBLE, don't include bottom and right edges */
340 if ( IntGetGraphicsMode(dc
) == GM_COMPATIBLE
)
346 /* Close any previous figure */
347 IntGdiCloseFigure(pPath
);
349 /* Add four points to the path */
350 pointTemp
.x
=corners
[1].x
;
351 pointTemp
.y
=corners
[0].y
;
352 if ( !PATH_AddEntry(pPath
, &pointTemp
, PT_MOVETO
) )
354 PATH_UnlockPath( pPath
);
357 if ( !PATH_AddEntry(pPath
, corners
, PT_LINETO
) )
359 PATH_UnlockPath( pPath
);
362 pointTemp
.x
=corners
[0].x
;
363 pointTemp
.y
=corners
[1].y
;
364 if ( !PATH_AddEntry(pPath
, &pointTemp
, PT_LINETO
) )
366 PATH_UnlockPath( pPath
);
369 if ( !PATH_AddEntry(pPath
, corners
+1, PT_LINETO
) )
371 PATH_UnlockPath( pPath
);
375 /* Close the rectangle figure */
376 IntGdiCloseFigure(pPath
) ;
377 PATH_UnlockPath( pPath
);
383 * Should be called when a call to RoundRect is performed on a DC that has
384 * an open path. Returns TRUE if successful, else FALSE.
386 * FIXME: it adds the same entries to the path as windows does, but there
387 * is an error in the bezier drawing code so that there are small pixel-size
388 * gaps when the resulting path is drawn by StrokePath()
390 BOOL FASTCALL
PATH_RoundRect(DC
*dc
, INT x1
, INT y1
, INT x2
, INT y2
, INT ell_width
, INT ell_height
)
393 POINT corners
[2], pointTemp
;
394 FLOAT_POINT ellCorners
[2];
396 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
397 if (!pPath
) return FALSE
;
399 /* Check that path is open */
400 if(pPath
->state
!=PATH_Open
)
402 PATH_UnlockPath( pPath
);
406 if(!PATH_CheckCorners(dc
,corners
,x1
,y1
,x2
,y2
))
408 PATH_UnlockPath( pPath
);
412 /* Add points to the roundrect path */
413 ellCorners
[0].x
= corners
[1].x
-ell_width
;
414 ellCorners
[0].y
= corners
[0].y
;
415 ellCorners
[1].x
= corners
[1].x
;
416 ellCorners
[1].y
= corners
[0].y
+ell_height
;
417 if(!PATH_DoArcPart(pPath
, ellCorners
, 0, -M_PI_2
, PT_MOVETO
))
419 PATH_UnlockPath( pPath
);
422 pointTemp
.x
= corners
[0].x
+ell_width
/2;
423 pointTemp
.y
= corners
[0].y
;
424 if(!PATH_AddEntry(pPath
, &pointTemp
, PT_LINETO
))
426 PATH_UnlockPath( pPath
);
429 ellCorners
[0].x
= corners
[0].x
;
430 ellCorners
[1].x
= corners
[0].x
+ell_width
;
431 if(!PATH_DoArcPart(pPath
, ellCorners
, -M_PI_2
, -M_PI
, FALSE
))
433 PATH_UnlockPath( pPath
);
436 pointTemp
.x
= corners
[0].x
;
437 pointTemp
.y
= corners
[1].y
-ell_height
/2;
438 if(!PATH_AddEntry(pPath
, &pointTemp
, PT_LINETO
))
440 PATH_UnlockPath( pPath
);
443 ellCorners
[0].y
= corners
[1].y
-ell_height
;
444 ellCorners
[1].y
= corners
[1].y
;
445 if(!PATH_DoArcPart(pPath
, ellCorners
, M_PI
, M_PI_2
, FALSE
))
447 PATH_UnlockPath( pPath
);
450 pointTemp
.x
= corners
[1].x
-ell_width
/2;
451 pointTemp
.y
= corners
[1].y
;
452 if(!PATH_AddEntry(pPath
, &pointTemp
, PT_LINETO
))
454 PATH_UnlockPath( pPath
);
457 ellCorners
[0].x
= corners
[1].x
-ell_width
;
458 ellCorners
[1].x
= corners
[1].x
;
459 if(!PATH_DoArcPart(pPath
, ellCorners
, M_PI_2
, 0, FALSE
))
461 PATH_UnlockPath( pPath
);
465 IntGdiCloseFigure(pPath
);
466 PATH_UnlockPath( pPath
);
472 * Should be called when a call to Ellipse is performed on a DC that has
473 * an open path. This adds four Bezier splines representing the ellipse
474 * to the path. Returns TRUE if successful, else FALSE.
478 PATH_Ellipse ( PDC dc
, INT x1
, INT y1
, INT x2
, INT y2
)
481 /* TODO: This should probably be revised to call PATH_AngleArc */
482 /* (once it exists) */
483 BOOL Ret
= PATH_Arc ( dc
, x1
, y1
, x2
, y2
, x1
, (y1
+y2
)/2, x1
, (y1
+y2
)/2, GdiTypeArc
);
486 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
487 if (!pPath
) return FALSE
;
488 IntGdiCloseFigure(pPath
);
489 PATH_UnlockPath( pPath
);
496 * Should be called when a call to Arc is performed on a DC that has
497 * an open path. This adds up to five Bezier splines representing the arc
498 * to the path. When 'lines' is 1, we add 1 extra line to get a chord,
499 * when 'lines' is 2, we add 2 extra lines to get a pie, and when 'lines' is
500 * -1 we add 1 extra line from the current DC position to the starting position
501 * of the arc before drawing the arc itself (arcto). Returns TRUE if successful,
506 PATH_Arc ( PDC dc
, INT x1
, INT y1
, INT x2
, INT y2
,
507 INT xStart
, INT yStart
, INT xEnd
, INT yEnd
, INT lines
)
509 double angleStart
, angleEnd
, angleStartQuadrant
, angleEndQuadrant
=0.0;
510 /* Initialize angleEndQuadrant to silence gcc's warning */
512 FLOAT_POINT corners
[2], pointStart
, pointEnd
;
513 POINT centre
, pointCurPos
;
514 BOOL start
, end
, Ret
= TRUE
;
519 /* FIXME: This function should check for all possible error returns */
520 /* FIXME: Do we have to respect newStroke? */
524 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
525 if (!pPath
) return FALSE
;
527 clockwise
= ((dc
->DcLevel
.flPath
& DCPATH_CLOCKWISE
) != 0);
529 /* Check that path is open */
530 if ( pPath
->state
!= PATH_Open
)
536 /* Check for zero height / width */
537 /* FIXME: Only in GM_COMPATIBLE? */
538 if ( x1
==x2
|| y1
==y2
)
543 /* Convert points to device coordinates */
544 corners
[0].x
=(FLOAT
)x1
;
545 corners
[0].y
=(FLOAT
)y1
;
546 corners
[1].x
=(FLOAT
)x2
;
547 corners
[1].y
=(FLOAT
)y2
;
548 pointStart
.x
=(FLOAT
)xStart
;
549 pointStart
.y
=(FLOAT
)yStart
;
550 pointEnd
.x
=(FLOAT
)xEnd
;
551 pointEnd
.y
=(FLOAT
)yEnd
;
552 INTERNAL_LPTODP_FLOAT(dc
, corners
);
553 INTERNAL_LPTODP_FLOAT(dc
, corners
+1);
554 INTERNAL_LPTODP_FLOAT(dc
, &pointStart
);
555 INTERNAL_LPTODP_FLOAT(dc
, &pointEnd
);
557 /* Make sure first corner is top left and second corner is bottom right */
558 if ( corners
[0].x
> corners
[1].x
)
561 corners
[0].x
=corners
[1].x
;
564 if ( corners
[0].y
> corners
[1].y
)
567 corners
[0].y
=corners
[1].y
;
571 /* Compute start and end angle */
572 PATH_NormalizePoint(corners
, &pointStart
, &x
, &y
);
573 angleStart
=atan2(y
, x
);
574 PATH_NormalizePoint(corners
, &pointEnd
, &x
, &y
);
575 angleEnd
=atan2(y
, x
);
577 /* Make sure the end angle is "on the right side" of the start angle */
580 if ( angleEnd
<= angleStart
)
583 ASSERT(angleEnd
>=angleStart
);
588 if(angleEnd
>=angleStart
)
591 ASSERT(angleEnd
<=angleStart
);
595 /* In GM_COMPATIBLE, don't include bottom and right edges */
596 if ( IntGetGraphicsMode(dc
) == GM_COMPATIBLE
)
602 /* arcto: Add a PT_MOVETO only if this is the first entry in a stroke */
603 if(lines
==GdiTypeArcTo
&& pPath
->newStroke
) // -1
605 pPath
->newStroke
=FALSE
;
606 IntGetCurrentPositionEx ( dc
, &pointCurPos
);
607 CoordLPtoDP(dc
, &pointCurPos
);
608 if(!PATH_AddEntry(pPath
, &pointCurPos
, PT_MOVETO
))
615 /* Add the arc to the path with one Bezier spline per quadrant that the
621 /* Determine the start and end angles for this quadrant */
624 angleStartQuadrant
=angleStart
;
626 angleEndQuadrant
=(floor(angleStart
/M_PI_2
)+1.0)*M_PI_2
;
628 angleEndQuadrant
=(ceil(angleStart
/M_PI_2
)-1.0)*M_PI_2
;
632 angleStartQuadrant
=angleEndQuadrant
;
634 angleEndQuadrant
+=M_PI_2
;
636 angleEndQuadrant
-=M_PI_2
;
639 /* Have we reached the last part of the arc? */
640 if ( (clockwise
&& angleEnd
<angleEndQuadrant
)
641 || (!clockwise
&& angleEnd
>angleEndQuadrant
)
644 /* Adjust the end angle for this quadrant */
645 angleEndQuadrant
= angleEnd
;
649 /* Add the Bezier spline to the path */
650 PATH_DoArcPart ( pPath
, corners
, angleStartQuadrant
, angleEndQuadrant
,
651 start
? (lines
==GdiTypeArcTo
? PT_LINETO
: PT_MOVETO
) : FALSE
); // -1
655 /* chord: close figure. pie: add line and close figure */
656 if (lines
==GdiTypeChord
) // 1
658 IntGdiCloseFigure(pPath
);
660 else if (lines
==GdiTypePie
) // 2
662 centre
.x
= (corners
[0].x
+corners
[1].x
)/2;
663 centre
.y
= (corners
[0].y
+corners
[1].y
)/2;
664 if(!PATH_AddEntry(pPath
, ¢re
, PT_LINETO
| PT_CLOSEFIGURE
))
668 PATH_UnlockPath( pPath
);
674 PATH_PolyBezierTo ( PDC dc
, const POINT
*pts
, DWORD cbPoints
)
684 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
685 if (!pPath
) return FALSE
;
687 /* Check that path is open */
688 if ( pPath
->state
!= PATH_Open
)
690 PATH_UnlockPath( pPath
);
694 /* Add a PT_MOVETO if necessary */
695 if ( pPath
->newStroke
)
697 pPath
->newStroke
=FALSE
;
698 IntGetCurrentPositionEx ( dc
, &pt
);
699 CoordLPtoDP ( dc
, &pt
);
700 if ( !PATH_AddEntry(pPath
, &pt
, PT_MOVETO
) )
702 PATH_UnlockPath( pPath
);
707 for(i
= 0; i
< cbPoints
; i
++)
710 CoordLPtoDP ( dc
, &pt
);
711 PATH_AddEntry(pPath
, &pt
, PT_BEZIERTO
);
713 PATH_UnlockPath( pPath
);
719 PATH_PolyBezier ( PDC dc
, const POINT
*pts
, DWORD cbPoints
)
729 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
730 if (!pPath
) return FALSE
;
732 /* Check that path is open */
733 if ( pPath
->state
!= PATH_Open
)
735 PATH_UnlockPath( pPath
);
739 for ( i
= 0; i
< cbPoints
; i
++ )
742 CoordLPtoDP ( dc
, &pt
);
743 PATH_AddEntry ( pPath
, &pt
, (i
== 0) ? PT_MOVETO
: PT_BEZIERTO
);
745 PATH_UnlockPath( pPath
);
751 PATH_Polyline ( PDC dc
, const POINT
*pts
, DWORD cbPoints
)
761 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
762 if (!pPath
) return FALSE
;
764 /* Check that path is open */
765 if ( pPath
->state
!= PATH_Open
)
767 PATH_UnlockPath( pPath
);
770 for ( i
= 0; i
< cbPoints
; i
++ )
773 CoordLPtoDP ( dc
, &pt
);
774 PATH_AddEntry(pPath
, &pt
, (i
== 0) ? PT_MOVETO
: PT_LINETO
);
776 PATH_UnlockPath( pPath
);
782 PATH_PolylineTo ( PDC dc
, const POINT
*pts
, DWORD cbPoints
)
792 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
793 if (!pPath
) return FALSE
;
795 /* Check that path is open */
796 if ( pPath
->state
!= PATH_Open
)
798 PATH_UnlockPath( pPath
);
802 /* Add a PT_MOVETO if necessary */
803 if ( pPath
->newStroke
)
805 pPath
->newStroke
= FALSE
;
806 IntGetCurrentPositionEx ( dc
, &pt
);
807 CoordLPtoDP ( dc
, &pt
);
808 if ( !PATH_AddEntry(pPath
, &pt
, PT_MOVETO
) )
810 PATH_UnlockPath( pPath
);
815 for(i
= 0; i
< cbPoints
; i
++)
818 CoordLPtoDP ( dc
, &pt
);
819 PATH_AddEntry(pPath
, &pt
, PT_LINETO
);
821 PATH_UnlockPath( pPath
);
828 PATH_Polygon ( PDC dc
, const POINT
*pts
, DWORD cbPoints
)
837 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
838 if (!pPath
) return FALSE
;
840 /* Check that path is open */
841 if ( pPath
->state
!= PATH_Open
)
843 PATH_UnlockPath( pPath
);
847 for(i
= 0; i
< cbPoints
; i
++)
850 CoordLPtoDP ( dc
, &pt
);
851 PATH_AddEntry(pPath
, &pt
, (i
== 0) ? PT_MOVETO
:
852 ((i
== cbPoints
-1) ? PT_LINETO
| PT_CLOSEFIGURE
:
855 PATH_UnlockPath( pPath
);
861 PATH_PolyPolygon ( PDC dc
, const POINT
* pts
, const INT
* counts
, UINT polygons
)
864 ULONG poly
, point
, i
;
872 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
873 if (!pPath
) return FALSE
;
875 /* Check that path is open */
876 if ( pPath
->state
!= PATH_Open
)
878 PATH_UnlockPath( pPath
);
882 for(i
= 0, poly
= 0; poly
< polygons
; poly
++)
884 for(point
= 0; point
< (ULONG
) counts
[poly
]; point
++, i
++)
887 CoordLPtoDP ( dc
, &pt
);
888 if(point
== 0) startpt
= pt
;
889 PATH_AddEntry(pPath
, &pt
, (point
== 0) ? PT_MOVETO
: PT_LINETO
);
891 /* win98 adds an extra line to close the figure for some reason */
892 PATH_AddEntry(pPath
, &startpt
, PT_LINETO
| PT_CLOSEFIGURE
);
894 PATH_UnlockPath( pPath
);
900 PATH_PolyPolyline ( PDC dc
, const POINT
* pts
, const DWORD
* counts
, DWORD polylines
)
903 ULONG poly
, point
, i
;
909 ASSERT ( polylines
);
911 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
912 if (!pPath
) return FALSE
;
914 /* Check that path is open */
915 if ( pPath
->state
!= PATH_Open
)
917 PATH_UnlockPath( pPath
);
921 for(i
= 0, poly
= 0; poly
< polylines
; poly
++)
923 for(point
= 0; point
< counts
[poly
]; point
++, i
++)
926 CoordLPtoDP ( dc
, &pt
);
927 PATH_AddEntry(pPath
, &pt
, (point
== 0) ? PT_MOVETO
: PT_LINETO
);
930 PATH_UnlockPath( pPath
);
937 * Helper function for PATH_RoundRect() and PATH_Rectangle()
939 BOOL
PATH_CheckCorners(DC
*dc
, POINT corners
[], INT x1
, INT y1
, INT x2
, INT y2
)
942 PDC_ATTR Dc_Attr
= dc
->pDc_Attr
;
943 if(!Dc_Attr
) Dc_Attr
= &dc
->Dc_Attr
;
945 /* Convert points to device coordinates */
950 CoordLPtoDP(dc
, &corners
[0]);
951 CoordLPtoDP(dc
, &corners
[1]);
953 /* Make sure first corner is top left and second corner is bottom right */
954 if(corners
[0].x
>corners
[1].x
)
957 corners
[0].x
=corners
[1].x
;
960 if(corners
[0].y
>corners
[1].y
)
963 corners
[0].y
=corners
[1].y
;
967 /* In GM_COMPATIBLE, don't include bottom and right edges */
968 if(Dc_Attr
->iGraphicsMode
==GM_COMPATIBLE
)
978 /* PATH_AddFlatBezier
983 PATH_AddFlatBezier ( PPATH pPath
, POINT
*pt
, BOOL closed
)
988 pts
= GDI_Bezier( pt
, 4, &no
);
989 if ( !pts
) return FALSE
;
991 for(i
= 1; i
< no
; i
++)
992 PATH_AddEntry(pPath
, &pts
[i
], (i
== no
-1 && closed
) ? PT_LINETO
| PT_CLOSEFIGURE
: PT_LINETO
);
1000 * Replaces Beziers with line segments
1005 PATH_FlattenPath(PPATH pPath
)
1010 RtlZeroMemory(&newPath
, sizeof(newPath
));
1011 newPath
.state
= PATH_Open
;
1012 for(srcpt
= 0; srcpt
< pPath
->numEntriesUsed
; srcpt
++) {
1013 switch(pPath
->pFlags
[srcpt
] & ~PT_CLOSEFIGURE
) {
1016 PATH_AddEntry(&newPath
, &pPath
->pPoints
[srcpt
], pPath
->pFlags
[srcpt
]);
1019 PATH_AddFlatBezier(&newPath
, &pPath
->pPoints
[srcpt
-1], pPath
->pFlags
[srcpt
+2] & PT_CLOSEFIGURE
);
1024 newPath
.state
= PATH_Closed
;
1025 PATH_AssignGdiPath(pPath
, &newPath
);
1026 PATH_EmptyPath(&newPath
);
1031 HRGN FASTCALL
IntCreatePolyPolygonRgn(POINT
*Pts
, INT
*Count
, INT nbpolygons
,INT mode
);
1032 /* PATH_PathToRegion
1034 * Creates a region from the specified path using the specified polygon
1035 * filling mode. The path is left unchanged. A handle to the region that
1036 * was created is stored in *pHrgn. If successful, TRUE is returned; if an
1037 * error occurs, SetLastError is called with the appropriate value and
1038 * FALSE is returned.
1042 PATH_PathToRegion ( PPATH pPath
, INT nPolyFillMode
, HRGN
*pHrgn
)
1044 int numStrokes
, iStroke
, i
;
1045 INT
*pNumPointsInStroke
;
1048 ASSERT(pPath
!=NULL
);
1049 ASSERT(pHrgn
!=NULL
);
1051 PATH_FlattenPath ( pPath
);
1053 /* FIXME: What happens when number of points is zero? */
1055 /* First pass: Find out how many strokes there are in the path */
1056 /* FIXME: We could eliminate this with some bookkeeping in GdiPath */
1058 for(i
=0; i
<pPath
->numEntriesUsed
; i
++)
1059 if((pPath
->pFlags
[i
] & ~PT_CLOSEFIGURE
) == PT_MOVETO
)
1062 /* Allocate memory for number-of-points-in-stroke array */
1063 pNumPointsInStroke
=(int *)ExAllocatePoolWithTag(PagedPool
, sizeof(int) * numStrokes
, TAG_PATH
);
1064 if(!pNumPointsInStroke
)
1066 SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY
);
1070 /* Second pass: remember number of points in each polygon */
1071 iStroke
=-1; /* Will get incremented to 0 at beginning of first stroke */
1072 for(i
=0; i
<pPath
->numEntriesUsed
; i
++)
1074 /* Is this the beginning of a new stroke? */
1075 if((pPath
->pFlags
[i
] & ~PT_CLOSEFIGURE
) == PT_MOVETO
)
1078 pNumPointsInStroke
[iStroke
]=0;
1081 pNumPointsInStroke
[iStroke
]++;
1084 /* Create a region from the strokes */
1085 hrgn
= IntCreatePolyPolygonRgn( pPath
->pPoints
,
1091 SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY
);
1095 /* Free memory for number-of-points-in-stroke array */
1096 ExFreePool(pNumPointsInStroke
);
1105 * Removes all entries from the path and sets the path state to PATH_Null.
1109 PATH_EmptyPath ( PPATH pPath
)
1111 ASSERT(pPath
!=NULL
);
1113 pPath
->state
=PATH_Null
;
1114 pPath
->numEntriesUsed
=0;
1119 * Adds an entry to the path. For "flags", pass either PT_MOVETO, PT_LINETO
1120 * or PT_BEZIERTO, optionally ORed with PT_CLOSEFIGURE. Returns TRUE if
1121 * successful, FALSE otherwise (e.g. if not enough memory was available).
1125 PATH_AddEntry ( PPATH pPath
, const POINT
*pPoint
, BYTE flags
)
1127 ASSERT(pPath
!=NULL
);
1129 /* FIXME: If newStroke is true, perhaps we want to check that we're
1130 * getting a PT_MOVETO
1133 /* Check that path is open */
1134 if ( pPath
->state
!= PATH_Open
)
1137 /* Reserve enough memory for an extra path entry */
1138 if ( !PATH_ReserveEntries(pPath
, pPath
->numEntriesUsed
+1) )
1141 /* Store information in path entry */
1142 pPath
->pPoints
[pPath
->numEntriesUsed
]=*pPoint
;
1143 pPath
->pFlags
[pPath
->numEntriesUsed
]=flags
;
1145 /* If this is PT_CLOSEFIGURE, we have to start a new stroke next time */
1146 if((flags
& PT_CLOSEFIGURE
) == PT_CLOSEFIGURE
)
1147 pPath
->newStroke
=TRUE
;
1149 /* Increment entry count */
1150 pPath
->numEntriesUsed
++;
1155 /* PATH_ReserveEntries
1157 * Ensures that at least "numEntries" entries (for points and flags) have
1158 * been allocated; allocates larger arrays and copies the existing entries
1159 * to those arrays, if necessary. Returns TRUE if successful, else FALSE.
1163 PATH_ReserveEntries ( PPATH pPath
, INT numEntries
)
1165 INT numEntriesToAllocate
;
1169 ASSERT(pPath
!=NULL
);
1170 ASSERT(numEntries
>=0);
1172 /* Do we have to allocate more memory? */
1173 if(numEntries
> pPath
->numEntriesAllocated
)
1175 /* Find number of entries to allocate. We let the size of the array
1176 * grow exponentially, since that will guarantee linear time
1178 if(pPath
->numEntriesAllocated
)
1180 numEntriesToAllocate
=pPath
->numEntriesAllocated
;
1181 while(numEntriesToAllocate
<numEntries
)
1182 numEntriesToAllocate
=numEntriesToAllocate
*GROW_FACTOR_NUMER
/GROW_FACTOR_DENOM
;
1184 numEntriesToAllocate
=numEntries
;
1186 /* Allocate new arrays */
1187 pPointsNew
=(POINT
*)ExAllocatePoolWithTag(PagedPool
, numEntriesToAllocate
* sizeof(POINT
), TAG_PATH
);
1190 pFlagsNew
=(BYTE
*)ExAllocatePoolWithTag(PagedPool
, numEntriesToAllocate
* sizeof(BYTE
), TAG_PATH
);
1193 ExFreePool(pPointsNew
);
1197 /* Copy old arrays to new arrays and discard old arrays */
1200 ASSERT(pPath
->pFlags
);
1202 memcpy(pPointsNew
, pPath
->pPoints
, sizeof(POINT
)*pPath
->numEntriesUsed
);
1203 memcpy(pFlagsNew
, pPath
->pFlags
, sizeof(BYTE
)*pPath
->numEntriesUsed
);
1205 ExFreePool(pPath
->pPoints
);
1206 ExFreePool(pPath
->pFlags
);
1208 pPath
->pPoints
=pPointsNew
;
1209 pPath
->pFlags
=pFlagsNew
;
1210 pPath
->numEntriesAllocated
=numEntriesToAllocate
;
1218 * Creates a Bezier spline that corresponds to part of an arc and appends the
1219 * corresponding points to the path. The start and end angles are passed in
1220 * "angleStart" and "angleEnd"; these angles should span a quarter circle
1221 * at most. If "startEntryType" is non-zero, an entry of that type for the first
1222 * control point is added to the path; otherwise, it is assumed that the current
1223 * position is equal to the first control point.
1227 PATH_DoArcPart ( PPATH pPath
, FLOAT_POINT corners
[],
1228 double angleStart
, double angleEnd
, BYTE startEntryType
)
1230 double halfAngle
, a
;
1231 double xNorm
[4], yNorm
[4];
1235 ASSERT(fabs(angleEnd
-angleStart
)<=M_PI_2
);
1237 /* FIXME: Is there an easier way of computing this? */
1239 /* Compute control points */
1240 halfAngle
=(angleEnd
-angleStart
)/2.0;
1241 if(fabs(halfAngle
)>1e-8)
1243 a
=4.0/3.0*(1-cos(halfAngle
))/sin(halfAngle
);
1244 xNorm
[0]=cos(angleStart
);
1245 yNorm
[0]=sin(angleStart
);
1246 xNorm
[1]=xNorm
[0] - a
*yNorm
[0];
1247 yNorm
[1]=yNorm
[0] + a
*xNorm
[0];
1248 xNorm
[3]=cos(angleEnd
);
1249 yNorm
[3]=sin(angleEnd
);
1250 xNorm
[2]=xNorm
[3] + a
*yNorm
[3];
1251 yNorm
[2]=yNorm
[3] - a
*xNorm
[3];
1255 xNorm
[i
]=cos(angleStart
);
1256 yNorm
[i
]=sin(angleStart
);
1259 /* Add starting point to path if desired */
1262 PATH_ScaleNormalizedPoint(corners
, xNorm
[0], yNorm
[0], &point
);
1263 if(!PATH_AddEntry(pPath
, &point
, startEntryType
))
1267 /* Add remaining control points */
1270 PATH_ScaleNormalizedPoint(corners
, xNorm
[i
], yNorm
[i
], &point
);
1271 if(!PATH_AddEntry(pPath
, &point
, PT_BEZIERTO
))
1278 /* PATH_ScaleNormalizedPoint
1280 * Scales a normalized point (x, y) with respect to the box whose corners are
1281 * passed in "corners". The point is stored in "*pPoint". The normalized
1282 * coordinates (-1.0, -1.0) correspond to corners[0], the coordinates
1283 * (1.0, 1.0) correspond to corners[1].
1287 PATH_ScaleNormalizedPoint ( FLOAT_POINT corners
[], double x
,
1288 double y
, POINT
*pPoint
)
1292 pPoint
->x
=GDI_ROUND( (double)corners
[0].x
+ (double)(corners
[1].x
-corners
[0].x
)*0.5*(x
+1.0) );
1293 pPoint
->y
=GDI_ROUND( (double)corners
[0].y
+ (double)(corners
[1].y
-corners
[0].y
)*0.5*(y
+1.0) );
1296 /* PATH_NormalizePoint
1298 * Normalizes a point with respect to the box whose corners are passed in
1299 * corners. The normalized coordinates are stored in *pX and *pY.
1303 PATH_NormalizePoint ( FLOAT_POINT corners
[],
1304 const FLOAT_POINT
*pPoint
,
1305 double *pX
, double *pY
)
1311 *pX
=(double)(pPoint
->x
-corners
[0].x
)/(double)(corners
[1].x
-corners
[0].x
) * 2.0 - 1.0;
1312 *pY
=(double)(pPoint
->y
-corners
[0].y
)/(double)(corners
[1].y
-corners
[0].y
) * 2.0 - 1.0;
1316 BOOL FASTCALL
PATH_StrokePath(DC
*dc
, PPATH pPath
)
1320 INT nLinePts
, nAlloc
;
1321 POINT
*pLinePts
= NULL
;
1322 POINT ptViewportOrg
, ptWindowOrg
;
1323 SIZE szViewportExt
, szWindowExt
;
1324 DWORD mapMode
, graphicsMode
;
1326 PDC_ATTR Dc_Attr
= dc
->pDc_Attr
;
1328 DPRINT("Enter %s\n", __FUNCTION__
);
1330 if (pPath
->state
!= PATH_Closed
)
1333 if(!Dc_Attr
) Dc_Attr
= &dc
->Dc_Attr
;
1334 /* Save the mapping mode info */
1335 mapMode
= Dc_Attr
->iMapMode
;
1336 IntGetViewportExtEx(dc
, &szViewportExt
);
1337 IntGetViewportOrgEx(dc
, &ptViewportOrg
);
1338 IntGetWindowExtEx(dc
, &szWindowExt
);
1339 IntGetWindowOrgEx(dc
, &ptWindowOrg
);
1341 MatrixS2XForm(&xform
, &dc
->DcLevel
.mxWorldToPage
);
1344 Dc_Attr
->iMapMode
= MM_TEXT
;
1345 Dc_Attr
->ptlViewportOrg
.x
= 0;
1346 Dc_Attr
->ptlViewportOrg
.y
= 0;
1347 Dc_Attr
->ptlWindowOrg
.x
= 0;
1348 Dc_Attr
->ptlWindowOrg
.y
= 0;
1349 graphicsMode
= Dc_Attr
->iGraphicsMode
;
1350 Dc_Attr
->iGraphicsMode
= GM_ADVANCED
;
1351 IntGdiModifyWorldTransform(dc
, &xform
, MWT_IDENTITY
);
1352 Dc_Attr
->iGraphicsMode
= graphicsMode
;
1354 /* Allocate enough memory for the worst case without beziers (one PT_MOVETO
1355 * and the rest PT_LINETO with PT_CLOSEFIGURE at the end) plus some buffer
1356 * space in case we get one to keep the number of reallocations small. */
1357 nAlloc
= pPath
->numEntriesUsed
+ 1 + 300;
1358 pLinePts
= ExAllocatePoolWithTag(PagedPool
, nAlloc
* sizeof(POINT
), TAG_PATH
);
1361 DPRINT1("Can't allocate pool!\n");
1362 SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY
);
1367 for(i
= 0; i
< pPath
->numEntriesUsed
; i
++)
1369 if((i
== 0 || (pPath
->pFlags
[i
-1] & PT_CLOSEFIGURE
))
1370 && (pPath
->pFlags
[i
] != PT_MOVETO
))
1372 DPRINT1("Expected PT_MOVETO %s, got path flag %d\n",
1373 i
== 0 ? "as first point" : "after PT_CLOSEFIGURE",
1374 (INT
)pPath
->pFlags
[i
]);
1378 switch(pPath
->pFlags
[i
])
1381 DPRINT("Got PT_MOVETO (%ld, %ld)\n",
1382 pPath
->pPoints
[i
].x
, pPath
->pPoints
[i
].y
);
1383 if(nLinePts
>= 2) IntGdiPolyline(dc
, pLinePts
, nLinePts
);
1385 pLinePts
[nLinePts
++] = pPath
->pPoints
[i
];
1388 case (PT_LINETO
| PT_CLOSEFIGURE
):
1389 DPRINT("Got PT_LINETO (%ld, %ld)\n",
1390 pPath
->pPoints
[i
].x
, pPath
->pPoints
[i
].y
);
1391 pLinePts
[nLinePts
++] = pPath
->pPoints
[i
];
1394 DPRINT("Got PT_BEZIERTO\n");
1395 if(pPath
->pFlags
[i
+1] != PT_BEZIERTO
||
1396 (pPath
->pFlags
[i
+2] & ~PT_CLOSEFIGURE
) != PT_BEZIERTO
)
1398 DPRINT1("Path didn't contain 3 successive PT_BEZIERTOs\n");
1404 INT nBzrPts
, nMinAlloc
;
1405 POINT
*pBzrPts
= GDI_Bezier(&pPath
->pPoints
[i
-1], 4, &nBzrPts
);
1406 /* Make sure we have allocated enough memory for the lines of
1407 * this bezier and the rest of the path, assuming we won't get
1408 * another one (since we won't reallocate again then). */
1409 nMinAlloc
= nLinePts
+ (pPath
->numEntriesUsed
- i
) + nBzrPts
;
1410 if(nAlloc
< nMinAlloc
)
1412 // Reallocate memory
1414 POINT
*Realloc
= NULL
;
1415 nAlloc
= nMinAlloc
* 2;
1417 Realloc
= ExAllocatePoolWithTag(PagedPool
,
1418 nAlloc
* sizeof(POINT
),
1423 DPRINT1("Can't allocate pool!\n");
1427 memcpy(Realloc
, pLinePts
, nLinePts
*sizeof(POINT
));
1428 ExFreePool(pLinePts
);
1431 memcpy(&pLinePts
[nLinePts
], &pBzrPts
[1], (nBzrPts
- 1) * sizeof(POINT
));
1432 nLinePts
+= nBzrPts
- 1;
1433 ExFreePool(pBzrPts
);
1438 DPRINT1("Got path flag %d (not supported)\n", (INT
)pPath
->pFlags
[i
]);
1442 if(pPath
->pFlags
[i
] & PT_CLOSEFIGURE
)
1444 pLinePts
[nLinePts
++] = pLinePts
[0];
1448 IntGdiPolyline(dc
, pLinePts
, nLinePts
);
1453 if(pLinePts
)ExFreePool(pLinePts
);
1455 /* Restore the old mapping mode */
1456 Dc_Attr
->iMapMode
= mapMode
;
1457 Dc_Attr
->szlWindowExt
.cx
= szWindowExt
.cx
;
1458 Dc_Attr
->szlWindowExt
.cy
= szWindowExt
.cy
;
1459 Dc_Attr
->ptlWindowOrg
.x
= ptWindowOrg
.x
;
1460 Dc_Attr
->ptlWindowOrg
.y
= ptWindowOrg
.y
;
1462 Dc_Attr
->szlViewportExt
.cx
= szViewportExt
.cx
;
1463 Dc_Attr
->szlViewportExt
.cy
= szViewportExt
.cy
;
1464 Dc_Attr
->ptlViewportOrg
.x
= ptViewportOrg
.x
;
1465 Dc_Attr
->ptlViewportOrg
.y
= ptViewportOrg
.y
;
1467 /* Restore the world transform */
1468 XForm2MatrixS(&dc
->DcLevel
.mxWorldToPage
, &xform
);
1470 /* If we've moved the current point then get its new position
1471 which will be in device (MM_TEXT) co-ords, convert it to
1472 logical co-ords and re-set it. This basically updates
1473 dc->CurPosX|Y so that their values are in the correct mapping
1479 IntGetCurrentPositionEx(dc
, &pt
);
1480 IntDPtoLP(dc
, &pt
, 1);
1481 IntGdiMoveToEx(dc
, pt
.x
, pt
.y
, NULL
);
1483 DPRINT("Leave %s, ret=%d\n", __FUNCTION__
, ret
);
1487 #define round(x) ((int)((x)>0?(x)+0.5:(x)-0.5))
1492 PATH_WidenPath(DC
*dc
)
1494 INT i
, j
, numStrokes
, penWidth
, penWidthIn
, penWidthOut
, size
, penStyle
;
1496 PPATH pPath
, pNewPath
, *pStrokes
, pUpPath
, pDownPath
;
1498 DWORD obj_type
, joint
, endcap
, penType
;
1499 PDC_ATTR Dc_Attr
= dc
->pDc_Attr
;
1501 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
1502 if (!pPath
) return FALSE
;
1504 if(pPath
->state
== PATH_Open
)
1506 PATH_UnlockPath( pPath
);
1507 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
1511 if(!Dc_Attr
) Dc_Attr
= &dc
->Dc_Attr
;
1513 PATH_FlattenPath(pPath
);
1515 size
= IntGdiGetObject( Dc_Attr
->hpen
, 0, NULL
);
1518 PATH_UnlockPath( pPath
);
1519 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
1523 elp
= ExAllocatePoolWithTag(PagedPool
, size
, TAG_PATH
);
1524 (VOID
) IntGdiGetObject( Dc_Attr
->hpen
, size
, elp
);
1526 obj_type
= GDIOBJ_GetObjectType(Dc_Attr
->hpen
);
1527 if(obj_type
== GDI_OBJECT_TYPE_PEN
)
1529 penStyle
= ((LOGPEN
*)elp
)->lopnStyle
;
1531 else if(obj_type
== GDI_OBJECT_TYPE_EXTPEN
)
1533 penStyle
= elp
->elpPenStyle
;
1537 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
1539 PATH_UnlockPath( pPath
);
1543 penWidth
= elp
->elpWidth
;
1546 endcap
= (PS_ENDCAP_MASK
& penStyle
);
1547 joint
= (PS_JOIN_MASK
& penStyle
);
1548 penType
= (PS_TYPE_MASK
& penStyle
);
1550 /* The function cannot apply to cosmetic pens */
1551 if(obj_type
== GDI_OBJECT_TYPE_EXTPEN
&& penType
== PS_COSMETIC
)
1553 PATH_UnlockPath( pPath
);
1554 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
1558 penWidthIn
= penWidth
/ 2;
1559 penWidthOut
= penWidth
/ 2;
1560 if(penWidthIn
+ penWidthOut
< penWidth
)
1565 pStrokes
= ExAllocatePoolWithTag(PagedPool
, sizeof(PPATH
), TAG_PATH
);
1566 pStrokes
[0] = ExAllocatePoolWithTag(PagedPool
, sizeof(PATH
), TAG_PATH
);
1567 PATH_InitGdiPath(pStrokes
[0]);
1568 pStrokes
[0]->pFlags
= ExAllocatePoolWithTag(PagedPool
, pPath
->numEntriesUsed
* sizeof(INT
), TAG_PATH
);
1569 pStrokes
[0]->pPoints
= ExAllocatePoolWithTag(PagedPool
, pPath
->numEntriesUsed
* sizeof(POINT
), TAG_PATH
);
1570 pStrokes
[0]->numEntriesUsed
= 0;
1572 for(i
= 0, j
= 0; i
< pPath
->numEntriesUsed
; i
++, j
++)
1575 if((i
== 0 || (pPath
->pFlags
[i
-1] & PT_CLOSEFIGURE
)) &&
1576 (pPath
->pFlags
[i
] != PT_MOVETO
))
1578 DPRINT1("Expected PT_MOVETO %s, got path flag %c\n",
1579 i
== 0 ? "as first point" : "after PT_CLOSEFIGURE",
1583 switch(pPath
->pFlags
[i
])
1588 pStrokes
[numStrokes
- 1]->state
= PATH_Closed
;
1592 ExFreePool(pStrokes
);
1593 pStrokes
= ExAllocatePoolWithTag(PagedPool
, numStrokes
* sizeof(PPATH
), TAG_PATH
);
1594 pStrokes
[numStrokes
- 1] = ExAllocatePoolWithTag(PagedPool
, sizeof(PATH
), TAG_PATH
);
1596 PATH_InitGdiPath(pStrokes
[numStrokes
- 1]);
1597 pStrokes
[numStrokes
- 1]->state
= PATH_Open
;
1599 case (PT_LINETO
| PT_CLOSEFIGURE
):
1600 point
.x
= pPath
->pPoints
[i
].x
;
1601 point
.y
= pPath
->pPoints
[i
].y
;
1602 PATH_AddEntry(pStrokes
[numStrokes
- 1], &point
, pPath
->pFlags
[i
]);
1605 /* should never happen because of the FlattenPath call */
1606 DPRINT1("Should never happen\n");
1609 DPRINT1("Got path flag %c\n", pPath
->pFlags
[i
]);
1614 pNewPath
= ExAllocatePoolWithTag(PagedPool
, sizeof(PATH
), TAG_PATH
);
1615 PATH_InitGdiPath(pNewPath
);
1616 pNewPath
->state
= PATH_Open
;
1618 for(i
= 0; i
< numStrokes
; i
++)
1620 pUpPath
= ExAllocatePoolWithTag(PagedPool
, sizeof(PATH
), TAG_PATH
);
1621 PATH_InitGdiPath(pUpPath
);
1622 pUpPath
->state
= PATH_Open
;
1623 pDownPath
= ExAllocatePoolWithTag(PagedPool
, sizeof(PATH
), TAG_PATH
);
1624 PATH_InitGdiPath(pDownPath
);
1625 pDownPath
->state
= PATH_Open
;
1627 for(j
= 0; j
< pStrokes
[i
]->numEntriesUsed
; j
++)
1629 /* Beginning or end of the path if not closed */
1630 if((!(pStrokes
[i
]->pFlags
[pStrokes
[i
]->numEntriesUsed
- 1] & PT_CLOSEFIGURE
)) && (j
== 0 || j
== pStrokes
[i
]->numEntriesUsed
- 1) )
1632 /* Compute segment angle */
1633 double xo
, yo
, xa
, ya
, theta
;
1635 FLOAT_POINT corners
[2];
1638 xo
= pStrokes
[i
]->pPoints
[j
].x
;
1639 yo
= pStrokes
[i
]->pPoints
[j
].y
;
1640 xa
= pStrokes
[i
]->pPoints
[1].x
;
1641 ya
= pStrokes
[i
]->pPoints
[1].y
;
1645 xa
= pStrokes
[i
]->pPoints
[j
- 1].x
;
1646 ya
= pStrokes
[i
]->pPoints
[j
- 1].y
;
1647 xo
= pStrokes
[i
]->pPoints
[j
].x
;
1648 yo
= pStrokes
[i
]->pPoints
[j
].y
;
1650 theta
= atan2( ya
- yo
, xa
- xo
);
1653 case PS_ENDCAP_SQUARE
:
1654 pt
.x
= xo
+ round(sqrt(2) * penWidthOut
* cos(M_PI_4
+ theta
));
1655 pt
.y
= yo
+ round(sqrt(2) * penWidthOut
* sin(M_PI_4
+ theta
));
1656 PATH_AddEntry(pUpPath
, &pt
, (j
== 0 ? PT_MOVETO
: PT_LINETO
) );
1657 pt
.x
= xo
+ round(sqrt(2) * penWidthIn
* cos(- M_PI_4
+ theta
));
1658 pt
.y
= yo
+ round(sqrt(2) * penWidthIn
* sin(- M_PI_4
+ theta
));
1659 PATH_AddEntry(pUpPath
, &pt
, PT_LINETO
);
1661 case PS_ENDCAP_FLAT
:
1662 pt
.x
= xo
+ round( penWidthOut
* cos(theta
+ M_PI_2
) );
1663 pt
.y
= yo
+ round( penWidthOut
* sin(theta
+ M_PI_2
) );
1664 PATH_AddEntry(pUpPath
, &pt
, (j
== 0 ? PT_MOVETO
: PT_LINETO
));
1665 pt
.x
= xo
- round( penWidthIn
* cos(theta
+ M_PI_2
) );
1666 pt
.y
= yo
- round( penWidthIn
* sin(theta
+ M_PI_2
) );
1667 PATH_AddEntry(pUpPath
, &pt
, PT_LINETO
);
1669 case PS_ENDCAP_ROUND
:
1671 corners
[0].x
= xo
- penWidthIn
;
1672 corners
[0].y
= yo
- penWidthIn
;
1673 corners
[1].x
= xo
+ penWidthOut
;
1674 corners
[1].y
= yo
+ penWidthOut
;
1675 PATH_DoArcPart(pUpPath
,corners
, theta
+ M_PI_2
, theta
+ 3 * M_PI_4
, (j
== 0 ? PT_MOVETO
: FALSE
));
1676 PATH_DoArcPart(pUpPath
,corners
, theta
+ 3 * M_PI_4
, theta
+ M_PI
, FALSE
);
1677 PATH_DoArcPart(pUpPath
,corners
, theta
+ M_PI
, theta
+ 5 * M_PI_4
, FALSE
);
1678 PATH_DoArcPart(pUpPath
,corners
, theta
+ 5 * M_PI_4
, theta
+ 3 * M_PI_2
, FALSE
);
1682 /* Corpse of the path */
1687 double xa
, ya
, xb
, yb
, xo
, yo
;
1688 double alpha
, theta
, miterWidth
;
1689 DWORD _joint
= joint
;
1691 PPATH pInsidePath
, pOutsidePath
;
1692 if(j
> 0 && j
< pStrokes
[i
]->numEntriesUsed
- 1)
1699 previous
= pStrokes
[i
]->numEntriesUsed
- 1;
1707 xo
= pStrokes
[i
]->pPoints
[j
].x
;
1708 yo
= pStrokes
[i
]->pPoints
[j
].y
;
1709 xa
= pStrokes
[i
]->pPoints
[previous
].x
;
1710 ya
= pStrokes
[i
]->pPoints
[previous
].y
;
1711 xb
= pStrokes
[i
]->pPoints
[next
].x
;
1712 yb
= pStrokes
[i
]->pPoints
[next
].y
;
1713 theta
= atan2( yo
- ya
, xo
- xa
);
1714 alpha
= atan2( yb
- yo
, xb
- xo
) - theta
;
1715 if (alpha
> 0) alpha
-= M_PI
;
1717 if(_joint
== PS_JOIN_MITER
&& dc
->DcLevel
.laPath
.eMiterLimit
< fabs(1 / sin(alpha
/2)))
1719 _joint
= PS_JOIN_BEVEL
;
1723 pInsidePath
= pUpPath
;
1724 pOutsidePath
= pDownPath
;
1728 pInsidePath
= pDownPath
;
1729 pOutsidePath
= pUpPath
;
1735 /* Inside angle points */
1738 pt
.x
= xo
- round( penWidthIn
* cos(theta
+ M_PI_2
) );
1739 pt
.y
= yo
- round( penWidthIn
* sin(theta
+ M_PI_2
) );
1743 pt
.x
= xo
+ round( penWidthIn
* cos(theta
+ M_PI_2
) );
1744 pt
.y
= yo
+ round( penWidthIn
* sin(theta
+ M_PI_2
) );
1746 PATH_AddEntry(pInsidePath
, &pt
, PT_LINETO
);
1749 pt
.x
= xo
+ round( penWidthIn
* cos(M_PI_2
+ alpha
+ theta
) );
1750 pt
.y
= yo
+ round( penWidthIn
* sin(M_PI_2
+ alpha
+ theta
) );
1754 pt
.x
= xo
- round( penWidthIn
* cos(M_PI_2
+ alpha
+ theta
) );
1755 pt
.y
= yo
- round( penWidthIn
* sin(M_PI_2
+ alpha
+ theta
) );
1757 PATH_AddEntry(pInsidePath
, &pt
, PT_LINETO
);
1758 /* Outside angle point */
1761 case PS_JOIN_MITER
:
1762 miterWidth
= fabs(penWidthOut
/ cos(M_PI_2
- fabs(alpha
) / 2));
1763 pt
.x
= xo
+ round( miterWidth
* cos(theta
+ alpha
/ 2) );
1764 pt
.y
= yo
+ round( miterWidth
* sin(theta
+ alpha
/ 2) );
1765 PATH_AddEntry(pOutsidePath
, &pt
, PT_LINETO
);
1767 case PS_JOIN_BEVEL
:
1770 pt
.x
= xo
+ round( penWidthOut
* cos(theta
+ M_PI_2
) );
1771 pt
.y
= yo
+ round( penWidthOut
* sin(theta
+ M_PI_2
) );
1775 pt
.x
= xo
- round( penWidthOut
* cos(theta
+ M_PI_2
) );
1776 pt
.y
= yo
- round( penWidthOut
* sin(theta
+ M_PI_2
) );
1778 PATH_AddEntry(pOutsidePath
, &pt
, PT_LINETO
);
1781 pt
.x
= xo
- round( penWidthOut
* cos(M_PI_2
+ alpha
+ theta
) );
1782 pt
.y
= yo
- round( penWidthOut
* sin(M_PI_2
+ alpha
+ theta
) );
1786 pt
.x
= xo
+ round( penWidthOut
* cos(M_PI_2
+ alpha
+ theta
) );
1787 pt
.y
= yo
+ round( penWidthOut
* sin(M_PI_2
+ alpha
+ theta
) );
1789 PATH_AddEntry(pOutsidePath
, &pt
, PT_LINETO
);
1791 case PS_JOIN_ROUND
:
1795 pt
.x
= xo
+ round( penWidthOut
* cos(theta
+ M_PI_2
) );
1796 pt
.y
= yo
+ round( penWidthOut
* sin(theta
+ M_PI_2
) );
1800 pt
.x
= xo
- round( penWidthOut
* cos(theta
+ M_PI_2
) );
1801 pt
.y
= yo
- round( penWidthOut
* sin(theta
+ M_PI_2
) );
1803 PATH_AddEntry(pOutsidePath
, &pt
, PT_BEZIERTO
);
1804 pt
.x
= xo
+ round( penWidthOut
* cos(theta
+ alpha
/ 2) );
1805 pt
.y
= yo
+ round( penWidthOut
* sin(theta
+ alpha
/ 2) );
1806 PATH_AddEntry(pOutsidePath
, &pt
, PT_BEZIERTO
);
1809 pt
.x
= xo
- round( penWidthOut
* cos(M_PI_2
+ alpha
+ theta
) );
1810 pt
.y
= yo
- round( penWidthOut
* sin(M_PI_2
+ alpha
+ theta
) );
1814 pt
.x
= xo
+ round( penWidthOut
* cos(M_PI_2
+ alpha
+ theta
) );
1815 pt
.y
= yo
+ round( penWidthOut
* sin(M_PI_2
+ alpha
+ theta
) );
1817 PATH_AddEntry(pOutsidePath
, &pt
, PT_BEZIERTO
);
1822 for(j
= 0; j
< pUpPath
->numEntriesUsed
; j
++)
1825 pt
.x
= pUpPath
->pPoints
[j
].x
;
1826 pt
.y
= pUpPath
->pPoints
[j
].y
;
1827 PATH_AddEntry(pNewPath
, &pt
, (j
== 0 ? PT_MOVETO
: PT_LINETO
));
1829 for(j
= 0; j
< pDownPath
->numEntriesUsed
; j
++)
1832 pt
.x
= pDownPath
->pPoints
[pDownPath
->numEntriesUsed
- j
- 1].x
;
1833 pt
.y
= pDownPath
->pPoints
[pDownPath
->numEntriesUsed
- j
- 1].y
;
1834 PATH_AddEntry(pNewPath
, &pt
, ( (j
== 0 && (pStrokes
[i
]->pFlags
[pStrokes
[i
]->numEntriesUsed
- 1] & PT_CLOSEFIGURE
)) ? PT_MOVETO
: PT_LINETO
));
1837 PATH_DestroyGdiPath(pStrokes
[i
]);
1838 ExFreePool(pStrokes
[i
]);
1839 PATH_DestroyGdiPath(pUpPath
);
1840 ExFreePool(pUpPath
);
1841 PATH_DestroyGdiPath(pDownPath
);
1842 ExFreePool(pDownPath
);
1844 ExFreePool(pStrokes
);
1846 pNewPath
->state
= PATH_Closed
;
1847 if (!(ret
= PATH_AssignGdiPath(pPath
, pNewPath
)))
1848 DPRINT1("Assign path failed\n");
1849 PATH_DestroyGdiPath(pNewPath
);
1850 ExFreePool(pNewPath
);
1856 /***********************************************************************
1857 * Exported functions
1862 NtGdiAbortPath(HDC hDC
)
1865 PDC dc
= DC_LockDc ( hDC
);
1868 SetLastWin32Error(ERROR_INVALID_HANDLE
);
1872 pPath
= PATH_LockPath(dc
->DcLevel
.hPath
);
1878 PATH_EmptyPath(pPath
);
1880 PATH_UnlockPath(pPath
);
1887 NtGdiBeginPath( HDC hDC
)
1892 dc
= DC_LockDc ( hDC
);
1895 SetLastWin32Error(ERROR_INVALID_HANDLE
);
1899 /* If path is already open, do nothing. Check if not Save DC state */
1900 if ((dc
->DcLevel
.flPath
& DCPATH_ACTIVE
) && !(dc
->DcLevel
.flPath
& DCPATH_SAVE
))
1906 if ( dc
->DcLevel
.hPath
)
1908 DPRINT1("BeginPath 1 0x%x\n", dc
->DcLevel
.hPath
);
1909 if ( !(dc
->DcLevel
.flPath
& DCPATH_SAVE
) )
1910 { // Remove previous handle.
1911 if (!PATH_Delete(dc
->DcLevel
.hPath
))
1918 { // Clear flags and Handle.
1919 dc
->DcLevel
.flPath
&= ~(DCPATH_SAVE
|DCPATH_ACTIVE
);
1920 dc
->DcLevel
.hPath
= NULL
;
1923 pPath
= PATH_AllocPathWithHandle();
1926 SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY
);
1929 dc
->DcLevel
.flPath
|= DCPATH_ACTIVE
; // Set active ASAP!
1931 dc
->DcLevel
.hPath
= pPath
->BaseObject
.hHmgr
;
1933 DPRINT1("BeginPath 2 h 0x%x p 0x%x\n", dc
->DcLevel
.hPath
, pPath
);
1934 // Path handles are shared. Also due to recursion with in the same thread.
1935 GDIOBJ_UnlockObjByPtr((POBJ
)pPath
); // Unlock
1936 pPath
= PATH_LockPath(dc
->DcLevel
.hPath
); // Share Lock.
1938 /* Make sure that path is empty */
1939 PATH_EmptyPath( pPath
);
1941 /* Initialize variables for new path */
1942 pPath
->newStroke
= TRUE
;
1943 pPath
->state
= PATH_Open
;
1945 PATH_UnlockPath(pPath
);
1952 NtGdiCloseFigure(HDC hDC
)
1954 BOOL Ret
= FALSE
; // default to failure
1958 DPRINT("Enter %s\n", __FUNCTION__
);
1960 pDc
= DC_LockDc(hDC
);
1963 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
1966 pPath
= PATH_LockPath( pDc
->DcLevel
.hPath
);
1973 if (pPath
->state
==PATH_Open
)
1975 IntGdiCloseFigure(pPath
);
1980 // FIXME: check if lasterror is set correctly
1981 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
1984 PATH_UnlockPath( pPath
);
1991 NtGdiEndPath(HDC hDC
)
1995 PDC dc
= DC_LockDc ( hDC
);
1999 SetLastWin32Error(ERROR_INVALID_HANDLE
);
2003 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
2009 /* Check that path is currently being constructed */
2010 if ( (pPath
->state
!= PATH_Open
) || !(dc
->DcLevel
.flPath
& DCPATH_ACTIVE
) )
2012 DPRINT1("EndPath ERROR! 0x%x\n", dc
->DcLevel
.hPath
);
2013 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
2016 /* Set flag to indicate that path is finished */
2019 DPRINT1("EndPath 0x%x\n", dc
->DcLevel
.hPath
);
2020 pPath
->state
= PATH_Closed
;
2021 dc
->DcLevel
.flPath
&= ~DCPATH_ACTIVE
;
2023 PATH_UnlockPath( pPath
);
2030 NtGdiFillPath(HDC hDC
)
2034 PDC dc
= DC_LockDc ( hDC
);
2038 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2041 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
2048 ret
= PATH_FillPath( dc
, pPath
);
2051 /* FIXME: Should the path be emptied even if conversion
2053 PATH_EmptyPath( pPath
);
2056 PATH_UnlockPath( pPath
);
2063 NtGdiFlattenPath(HDC hDC
)
2069 DPRINT("Enter %s\n", __FUNCTION__
);
2071 pDc
= DC_LockDc(hDC
);
2074 SetLastWin32Error(ERROR_INVALID_HANDLE
);
2078 pPath
= PATH_LockPath( pDc
->DcLevel
.hPath
);
2081 DC_UnlockDc ( pDc
);
2084 if (pPath
->state
== PATH_Open
)
2085 Ret
= PATH_FlattenPath(pPath
);
2087 PATH_UnlockPath( pPath
);
2101 NTSTATUS Status
= STATUS_SUCCESS
;
2103 if (!(pDc
= DC_LockDc(hdc
)))
2105 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2109 worker
.f
= pDc
->DcLevel
.laPath
.eMiterLimit
;
2115 ProbeForWrite(pdwOut
,
2122 Status
= _SEH_GetExceptionCode();
2125 if (!NT_SUCCESS(Status
))
2127 SetLastNtError(Status
);
2149 DC
*dc
= DC_LockDc(hDC
);
2152 DPRINT1("Can't lock dc!\n");
2153 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2157 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
2164 if (pPath
->state
!= PATH_Closed
)
2166 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
2172 ret
= pPath
->numEntriesUsed
;
2174 else if(nSize
<pPath
->numEntriesUsed
)
2176 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2183 memcpy(Points
, pPath
->pPoints
, sizeof(POINT
)*pPath
->numEntriesUsed
);
2184 memcpy(Types
, pPath
->pFlags
, sizeof(BYTE
)*pPath
->numEntriesUsed
);
2186 /* Convert the points to logical coordinates */
2187 IntDPtoLP(dc
, Points
, pPath
->numEntriesUsed
);
2189 ret
= pPath
->numEntriesUsed
;
2193 SetLastNtError(_SEH_GetExceptionCode());
2199 PATH_UnlockPath( pPath
);
2206 NtGdiPathToRegion(HDC hDC
)
2213 DPRINT("Enter %s\n", __FUNCTION__
);
2215 pDc
= DC_LockDc(hDC
);
2218 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2222 Dc_Attr
= pDc
->pDc_Attr
;
2223 if(!Dc_Attr
) Dc_Attr
= &pDc
->Dc_Attr
;
2225 pPath
= PATH_LockPath( pDc
->DcLevel
.hPath
);
2228 DC_UnlockDc ( pDc
);
2232 if (pPath
->state
!=PATH_Closed
)
2234 //FIXME: check that setlasterror is being called correctly
2235 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
2239 /* FIXME: Should we empty the path even if conversion failed? */
2240 if(PATH_PathToRegion(pPath
, Dc_Attr
->jFillMode
, &hrgnRval
))
2241 PATH_EmptyPath(pPath
);
2244 PATH_UnlockPath( pPath
);
2254 IN OUT OPTIONAL PDWORD pdwOut
)
2257 gxf_long worker
, worker1
;
2258 NTSTATUS Status
= STATUS_SUCCESS
;
2260 if (!(pDc
= DC_LockDc(hdc
)))
2262 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2267 worker1
.f
= pDc
->DcLevel
.laPath
.eMiterLimit
;
2268 pDc
->DcLevel
.laPath
.eMiterLimit
= worker
.f
;
2274 ProbeForWrite(pdwOut
,
2277 *pdwOut
= worker1
.l
;
2281 Status
= _SEH_GetExceptionCode();
2284 if (!NT_SUCCESS(Status
))
2286 SetLastNtError(Status
);
2298 NtGdiStrokeAndFillPath(HDC hDC
)
2304 DPRINT1("Enter %s\n", __FUNCTION__
);
2306 if (!(pDc
= DC_LockDc(hDC
)))
2308 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2311 pPath
= PATH_LockPath( pDc
->DcLevel
.hPath
);
2314 DC_UnlockDc ( pDc
);
2317 bRet
= PATH_FillPath(pDc
, pPath
);
2318 if (bRet
) bRet
= PATH_StrokePath(pDc
, pPath
);
2319 if (bRet
) PATH_EmptyPath(pPath
);
2321 PATH_UnlockPath( pPath
);
2328 NtGdiStrokePath(HDC hDC
)
2334 DPRINT("Enter %s\n", __FUNCTION__
);
2336 if (!(pDc
= DC_LockDc(hDC
)))
2338 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2341 pPath
= PATH_LockPath( pDc
->DcLevel
.hPath
);
2344 DC_UnlockDc ( pDc
);
2348 bRet
= PATH_StrokePath(pDc
, pPath
);
2349 PATH_EmptyPath(pPath
);
2351 PATH_UnlockPath( pPath
);
2358 NtGdiWidenPath(HDC hDC
)
2361 PDC pdc
= DC_LockDc ( hDC
);
2364 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2367 Ret
= PATH_WidenPath(pdc
);
2368 DC_UnlockDc ( pdc
);
2374 NtGdiSelectClipPath(HDC hDC
,
2379 BOOL success
= FALSE
;
2381 PDC dc
= DC_LockDc ( hDC
);
2385 SetLastWin32Error(ERROR_INVALID_PARAMETER
);
2389 Dc_Attr
= dc
->pDc_Attr
;
2390 if(!Dc_Attr
) Dc_Attr
= &dc
->Dc_Attr
;
2392 pPath
= PATH_LockPath( dc
->DcLevel
.hPath
);
2398 /* Check that path is closed */
2399 if( pPath
->state
!= PATH_Closed
)
2401 SetLastWin32Error(ERROR_CAN_NOT_COMPLETE
);
2404 /* Construct a region from the path */
2405 else if( PATH_PathToRegion( pPath
, Dc_Attr
->jFillMode
, &hrgnPath
) )
2407 success
= GdiExtSelectClipRgn( dc
, hrgnPath
, Mode
) != ERROR
;
2408 NtGdiDeleteObject( hrgnPath
);
2410 /* Empty the path */
2412 PATH_EmptyPath( pPath
);
2413 /* FIXME: Should this function delete the path even if it failed? */
2415 PATH_UnlockPath( pPath
);