2 * Copyright (C) 2007 Google (Evan Stade)
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
31 #include "gdiplus_private.h"
32 #include "wine/debug.h"
34 WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
36 typedef struct path_list_node_t path_list_node_t;
37 struct path_list_node_t {
39 BYTE type; /* PathPointTypeStart or PathPointTypeLine */
40 path_list_node_t *next;
44 static BOOL init_path_list(path_list_node_t **node, REAL x, REAL y)
46 *node = GdipAlloc(sizeof(path_list_node_t));
52 (*node)->type = PathPointTypeStart;
58 /* free all nodes including argument */
59 static void free_path_list(path_list_node_t *node)
61 path_list_node_t *n = node;
70 /* Add a node after 'node' */
74 * NULL on allocation problems
76 static path_list_node_t* add_path_list_node(path_list_node_t *node, REAL x, REAL y, BOOL type)
78 path_list_node_t *new;
80 new = GdipAlloc(sizeof(path_list_node_t));
87 new->next = node->next;
93 /* returns element count */
94 static INT path_list_count(path_list_node_t *node)
98 while((node = node->next))
104 /* GdipFlattenPath helper */
106 * Used to recursively flatten single Bezier curve
108 * - start : pointer to start point node;
109 * - (x2, y2): first control point;
110 * - (x3, y3): second control point;
111 * - end : pointer to end point node
112 * - flatness: admissible error of linear approximation.
116 * FALSE: out of memory
118 * TODO: used quality criteria should be revised to match native as
119 * closer as possible.
121 static BOOL flatten_bezier(path_list_node_t *start, REAL x2, REAL y2, REAL x3, REAL y3,
122 path_list_node_t *end, REAL flatness)
124 /* this 5 middle points with start/end define to half-curves */
127 path_list_node_t *node;
129 /* calculate bezier curve middle points == new control points */
130 mp[0].X = (start->pt.X + x2) / 2.0;
131 mp[0].Y = (start->pt.Y + y2) / 2.0;
132 /* middle point between control points */
133 pt.X = (x2 + x3) / 2.0;
134 pt.Y = (y2 + y3) / 2.0;
135 mp[1].X = (mp[0].X + pt.X) / 2.0;
136 mp[1].Y = (mp[0].Y + pt.Y) / 2.0;
137 mp[4].X = (end->pt.X + x3) / 2.0;
138 mp[4].Y = (end->pt.Y + y3) / 2.0;
139 mp[3].X = (mp[4].X + pt.X) / 2.0;
140 mp[3].Y = (mp[4].Y + pt.Y) / 2.0;
142 mp[2].X = (mp[1].X + mp[3].X) / 2.0;
143 mp[2].Y = (mp[1].Y + mp[3].Y) / 2.0;
147 /* check flatness as a half of distance between middle point and a linearized path */
148 if(fabs(((pt.Y - pt_st.Y)*mp[2].X + (pt_st.X - pt.X)*mp[2].Y +
149 (pt_st.Y*pt.X - pt_st.X*pt.Y))) <=
150 (0.5 * flatness*sqrtf((powf(pt.Y - pt_st.Y, 2.0) + powf(pt_st.X - pt.X, 2.0))))){
154 /* add a middle point */
155 if(!(node = add_path_list_node(start, mp[2].X, mp[2].Y, PathPointTypeLine)))
158 /* do the same with halfs */
159 flatten_bezier(start, mp[0].X, mp[0].Y, mp[1].X, mp[1].Y, node, flatness);
160 flatten_bezier(node, mp[3].X, mp[3].Y, mp[4].X, mp[4].Y, end, flatness);
165 GpStatus WINGDIPAPI GdipAddPathArc(GpPath *path, REAL x1, REAL y1, REAL x2,
166 REAL y2, REAL startAngle, REAL sweepAngle)
168 INT count, old_count, i;
170 TRACE("(%p, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f)\n",
171 path, x1, y1, x2, y2, startAngle, sweepAngle);
174 return InvalidParameter;
176 count = arc2polybezier(NULL, x1, y1, x2, y2, startAngle, sweepAngle);
180 if(!lengthen_path(path, count))
183 old_count = path->pathdata.Count;
184 arc2polybezier(&path->pathdata.Points[old_count], x1, y1, x2, y2,
185 startAngle, sweepAngle);
187 for(i = 0; i < count; i++){
188 path->pathdata.Types[old_count + i] = PathPointTypeBezier;
191 path->pathdata.Types[old_count] =
192 (path->newfigure ? PathPointTypeStart : PathPointTypeLine);
193 path->newfigure = FALSE;
194 path->pathdata.Count += count;
199 GpStatus WINGDIPAPI GdipAddPathArcI(GpPath *path, INT x1, INT y1, INT x2,
200 INT y2, REAL startAngle, REAL sweepAngle)
202 TRACE("(%p, %d, %d, %d, %d, %.2f, %.2f)\n",
203 path, x1, y1, x2, y2, startAngle, sweepAngle);
205 return GdipAddPathArc(path,(REAL)x1,(REAL)y1,(REAL)x2,(REAL)y2,startAngle,sweepAngle);
208 GpStatus WINGDIPAPI GdipAddPathBezier(GpPath *path, REAL x1, REAL y1, REAL x2,
209 REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
213 TRACE("(%p, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f)\n",
214 path, x1, y1, x2, y2, x3, y3, x4, y4);
217 return InvalidParameter;
219 if(!lengthen_path(path, 4))
222 old_count = path->pathdata.Count;
224 path->pathdata.Points[old_count].X = x1;
225 path->pathdata.Points[old_count].Y = y1;
226 path->pathdata.Points[old_count + 1].X = x2;
227 path->pathdata.Points[old_count + 1].Y = y2;
228 path->pathdata.Points[old_count + 2].X = x3;
229 path->pathdata.Points[old_count + 2].Y = y3;
230 path->pathdata.Points[old_count + 3].X = x4;
231 path->pathdata.Points[old_count + 3].Y = y4;
233 path->pathdata.Types[old_count] =
234 (path->newfigure ? PathPointTypeStart : PathPointTypeLine);
235 path->pathdata.Types[old_count + 1] = PathPointTypeBezier;
236 path->pathdata.Types[old_count + 2] = PathPointTypeBezier;
237 path->pathdata.Types[old_count + 3] = PathPointTypeBezier;
239 path->newfigure = FALSE;
240 path->pathdata.Count += 4;
245 GpStatus WINGDIPAPI GdipAddPathBezierI(GpPath *path, INT x1, INT y1, INT x2,
246 INT y2, INT x3, INT y3, INT x4, INT y4)
248 TRACE("(%p, %d, %d, %d, %d, %d, %d, %d, %d)\n",
249 path, x1, y1, x2, y2, x3, y3, x4, y4);
251 return GdipAddPathBezier(path,(REAL)x1,(REAL)y1,(REAL)x2,(REAL)y2,(REAL)x3,(REAL)y3,
255 GpStatus WINGDIPAPI GdipAddPathBeziers(GpPath *path, GDIPCONST GpPointF *points,
260 TRACE("(%p, %p, %d)\n", path, points, count);
262 if(!path || !points || ((count - 1) % 3))
263 return InvalidParameter;
265 if(!lengthen_path(path, count))
268 old_count = path->pathdata.Count;
270 for(i = 0; i < count; i++){
271 path->pathdata.Points[old_count + i].X = points[i].X;
272 path->pathdata.Points[old_count + i].Y = points[i].Y;
273 path->pathdata.Types[old_count + i] = PathPointTypeBezier;
276 path->pathdata.Types[old_count] =
277 (path->newfigure ? PathPointTypeStart : PathPointTypeLine);
278 path->newfigure = FALSE;
279 path->pathdata.Count += count;
284 GpStatus WINGDIPAPI GdipAddPathBeziersI(GpPath *path, GDIPCONST GpPoint *points,
291 TRACE("(%p, %p, %d)\n", path, points, count);
293 if(!points || ((count - 1) % 3))
294 return InvalidParameter;
296 ptsF = GdipAlloc(sizeof(GpPointF) * count);
300 for(i = 0; i < count; i++){
301 ptsF[i].X = (REAL)points[i].X;
302 ptsF[i].Y = (REAL)points[i].Y;
305 ret = GdipAddPathBeziers(path, ptsF, count);
311 GpStatus WINGDIPAPI GdipAddPathClosedCurve(GpPath *path, GDIPCONST GpPointF *points,
314 TRACE("(%p, %p, %d)\n", path, points, count);
316 return GdipAddPathClosedCurve2(path, points, count, 1.0);
319 GpStatus WINGDIPAPI GdipAddPathClosedCurveI(GpPath *path, GDIPCONST GpPoint *points,
322 TRACE("(%p, %p, %d)\n", path, points, count);
324 return GdipAddPathClosedCurve2I(path, points, count, 1.0);
327 GpStatus WINGDIPAPI GdipAddPathClosedCurve2(GpPath *path, GDIPCONST GpPointF *points,
328 INT count, REAL tension)
330 INT i, len_pt = (count + 1)*3-2;
336 TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
338 if(!path || !points || count <= 1)
339 return InvalidParameter;
341 pt = GdipAlloc(len_pt * sizeof(GpPointF));
342 pts = GdipAlloc((count + 1)*sizeof(GpPointF));
349 /* copy source points to extend with the last one */
350 memcpy(pts, points, sizeof(GpPointF)*count);
353 tension = tension * TENSION_CONST;
355 for(i = 0; i < count-1; i++){
356 calc_curve_bezier(&(pts[i]), tension, &x1, &y1, &x2, &y2);
360 pt[3*i+3].X = pts[i+1].X;
361 pt[3*i+3].Y = pts[i+1].Y;
366 /* points [len_pt-2] and [0] are calculated
367 separetely to connect splines properly */
368 pts[0] = points[count-1];
369 pts[1] = points[0]; /* equals to start and end of a resulting path */
372 calc_curve_bezier(pts, tension, &x1, &y1, &x2, &y2);
380 pt[len_pt-1].X = pt[0].X;
381 pt[len_pt-1].Y = pt[0].Y;
383 stat = GdipAddPathBeziers(path, pt, len_pt);
387 INT count = path->pathdata.Count;
388 path->pathdata.Types[count - 1] |= PathPointTypeCloseSubpath;
389 path->newfigure = TRUE;
398 GpStatus WINGDIPAPI GdipAddPathClosedCurve2I(GpPath *path, GDIPCONST GpPoint *points,
399 INT count, REAL tension)
405 TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
407 if(!path || !points || count <= 1)
408 return InvalidParameter;
410 ptf = GdipAlloc(sizeof(GpPointF)*count);
414 for(i = 0; i < count; i++){
415 ptf[i].X = (REAL)points[i].X;
416 ptf[i].Y = (REAL)points[i].Y;
419 stat = GdipAddPathClosedCurve2(path, ptf, count, tension);
426 GpStatus WINGDIPAPI GdipAddPathCurve(GpPath *path, GDIPCONST GpPointF *points, INT count)
428 TRACE("(%p, %p, %d)\n", path, points, count);
430 if(!path || !points || count <= 1)
431 return InvalidParameter;
433 return GdipAddPathCurve2(path, points, count, 1.0);
436 GpStatus WINGDIPAPI GdipAddPathCurveI(GpPath *path, GDIPCONST GpPoint *points, INT count)
438 TRACE("(%p, %p, %d)\n", path, points, count);
440 if(!path || !points || count <= 1)
441 return InvalidParameter;
443 return GdipAddPathCurve2I(path, points, count, 1.0);
446 GpStatus WINGDIPAPI GdipAddPathCurve2(GpPath *path, GDIPCONST GpPointF *points, INT count,
449 INT i, len_pt = count*3-2;
454 TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
456 if(!path || !points || count <= 1)
457 return InvalidParameter;
459 pt = GdipAlloc(len_pt * sizeof(GpPointF));
463 tension = tension * TENSION_CONST;
465 calc_curve_bezier_endp(points[0].X, points[0].Y, points[1].X, points[1].Y,
468 pt[0].X = points[0].X;
469 pt[0].Y = points[0].Y;
473 for(i = 0; i < count-2; i++){
474 calc_curve_bezier(&(points[i]), tension, &x1, &y1, &x2, &y2);
478 pt[3*i+3].X = points[i+1].X;
479 pt[3*i+3].Y = points[i+1].Y;
484 calc_curve_bezier_endp(points[count-1].X, points[count-1].Y,
485 points[count-2].X, points[count-2].Y, tension, &x1, &y1);
489 pt[len_pt-1].X = points[count-1].X;
490 pt[len_pt-1].Y = points[count-1].Y;
492 stat = GdipAddPathBeziers(path, pt, len_pt);
499 GpStatus WINGDIPAPI GdipAddPathCurve2I(GpPath *path, GDIPCONST GpPoint *points,
500 INT count, REAL tension)
506 TRACE("(%p, %p, %d, %.2f)\n", path, points, count, tension);
508 if(!path || !points || count <= 1)
509 return InvalidParameter;
511 ptf = GdipAlloc(sizeof(GpPointF)*count);
515 for(i = 0; i < count; i++){
516 ptf[i].X = (REAL)points[i].X;
517 ptf[i].Y = (REAL)points[i].Y;
520 stat = GdipAddPathCurve2(path, ptf, count, tension);
527 GpStatus WINGDIPAPI GdipAddPathCurve3(GpPath *path, GDIPCONST GpPointF *points,
528 INT count, INT offset, INT nseg, REAL tension)
530 TRACE("(%p, %p, %d, %d, %d, %.2f)\n", path, points, count, offset, nseg, tension);
532 if(!path || !points || offset + 1 >= count || count - offset < nseg + 1)
533 return InvalidParameter;
535 return GdipAddPathCurve2(path, &points[offset], nseg + 1, tension);
538 GpStatus WINGDIPAPI GdipAddPathCurve3I(GpPath *path, GDIPCONST GpPoint *points,
539 INT count, INT offset, INT nseg, REAL tension)
541 TRACE("(%p, %p, %d, %d, %d, %.2f)\n", path, points, count, offset, nseg, tension);
543 if(!path || !points || offset + 1 >= count || count - offset < nseg + 1)
544 return InvalidParameter;
546 return GdipAddPathCurve2I(path, &points[offset], nseg + 1, tension);
549 GpStatus WINGDIPAPI GdipAddPathEllipse(GpPath *path, REAL x, REAL y, REAL width,
552 INT old_count, numpts;
554 TRACE("(%p, %.2f, %.2f, %.2f, %.2f)\n", path, x, y, width, height);
557 return InvalidParameter;
559 if(!lengthen_path(path, MAX_ARC_PTS))
562 old_count = path->pathdata.Count;
563 if((numpts = arc2polybezier(&path->pathdata.Points[old_count], x, y, width,
564 height, 0.0, 360.0)) != MAX_ARC_PTS){
565 ERR("expected %d points but got %d\n", MAX_ARC_PTS, numpts);
569 memset(&path->pathdata.Types[old_count + 1], PathPointTypeBezier,
572 /* An ellipse is an intrinsic figure (always is its own subpath). */
573 path->pathdata.Types[old_count] = PathPointTypeStart;
574 path->pathdata.Types[old_count + MAX_ARC_PTS - 1] |= PathPointTypeCloseSubpath;
575 path->newfigure = TRUE;
576 path->pathdata.Count += MAX_ARC_PTS;
581 GpStatus WINGDIPAPI GdipAddPathEllipseI(GpPath *path, INT x, INT y, INT width,
584 TRACE("(%p, %d, %d, %d, %d)\n", path, x, y, width, height);
586 return GdipAddPathEllipse(path,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
589 GpStatus WINGDIPAPI GdipAddPathLine2(GpPath *path, GDIPCONST GpPointF *points,
594 TRACE("(%p, %p, %d)\n", path, points, count);
597 return InvalidParameter;
599 if(!lengthen_path(path, count))
602 old_count = path->pathdata.Count;
604 for(i = 0; i < count; i++){
605 path->pathdata.Points[old_count + i].X = points[i].X;
606 path->pathdata.Points[old_count + i].Y = points[i].Y;
607 path->pathdata.Types[old_count + i] = PathPointTypeLine;
611 path->pathdata.Types[old_count] = PathPointTypeStart;
612 path->newfigure = FALSE;
615 path->pathdata.Count += count;
620 GpStatus WINGDIPAPI GdipAddPathLine2I(GpPath *path, GDIPCONST GpPoint *points, INT count)
626 TRACE("(%p, %p, %d)\n", path, points, count);
629 return InvalidParameter;
631 pointsF = GdipAlloc(sizeof(GpPointF) * count);
632 if(!pointsF) return OutOfMemory;
634 for(i = 0;i < count; i++){
635 pointsF[i].X = (REAL)points[i].X;
636 pointsF[i].Y = (REAL)points[i].Y;
639 stat = GdipAddPathLine2(path, pointsF, count);
646 GpStatus WINGDIPAPI GdipAddPathLine(GpPath *path, REAL x1, REAL y1, REAL x2, REAL y2)
650 TRACE("(%p, %.2f, %.2f, %.2f, %.2f)\n", path, x1, y1, x2, y2);
653 return InvalidParameter;
655 if(!lengthen_path(path, 2))
658 old_count = path->pathdata.Count;
660 path->pathdata.Points[old_count].X = x1;
661 path->pathdata.Points[old_count].Y = y1;
662 path->pathdata.Points[old_count + 1].X = x2;
663 path->pathdata.Points[old_count + 1].Y = y2;
665 path->pathdata.Types[old_count] =
666 (path->newfigure ? PathPointTypeStart : PathPointTypeLine);
667 path->pathdata.Types[old_count + 1] = PathPointTypeLine;
669 path->newfigure = FALSE;
670 path->pathdata.Count += 2;
675 GpStatus WINGDIPAPI GdipAddPathLineI(GpPath *path, INT x1, INT y1, INT x2, INT y2)
677 TRACE("(%p, %d, %d, %d, %d)\n", path, x1, y1, x2, y2);
679 return GdipAddPathLine(path, (REAL)x1, (REAL)y1, (REAL)x2, (REAL)y2);
682 GpStatus WINGDIPAPI GdipAddPathPath(GpPath *path, GDIPCONST GpPath* addingPath,
685 INT old_count, count;
687 TRACE("(%p, %p, %d)\n", path, addingPath, connect);
689 if(!path || !addingPath)
690 return InvalidParameter;
692 old_count = path->pathdata.Count;
693 count = addingPath->pathdata.Count;
695 if(!lengthen_path(path, count))
698 memcpy(&path->pathdata.Points[old_count], addingPath->pathdata.Points,
699 count * sizeof(GpPointF));
700 memcpy(&path->pathdata.Types[old_count], addingPath->pathdata.Types, count);
702 if(path->newfigure || !connect)
703 path->pathdata.Types[old_count] = PathPointTypeStart;
705 path->pathdata.Types[old_count] = PathPointTypeLine;
707 path->newfigure = FALSE;
708 path->pathdata.Count += count;
713 GpStatus WINGDIPAPI GdipAddPathPie(GpPath *path, REAL x, REAL y, REAL width, REAL height,
714 REAL startAngle, REAL sweepAngle)
720 TRACE("(%p, %.2f, %.2f, %.2f, %.2f, %.2f, %.2f)\n",
721 path, x, y, width, height, startAngle, sweepAngle);
724 return InvalidParameter;
726 count = arc2polybezier(NULL, x, y, width, height, startAngle, sweepAngle);
731 ptf = GdipAlloc(sizeof(GpPointF)*count);
735 arc2polybezier(ptf, x, y, width, height, startAngle, sweepAngle);
737 status = GdipAddPathLine(path, (width - x)/2, (height - y)/2, ptf[0].X, ptf[0].Y);
742 /* one spline is already added as a line endpoint */
743 if(!lengthen_path(path, count - 1)){
748 memcpy(&(path->pathdata.Points[path->pathdata.Count]), &(ptf[1]),sizeof(GpPointF)*(count-1));
749 for(i = 0; i < count-1; i++)
750 path->pathdata.Types[path->pathdata.Count+i] = PathPointTypeBezier;
752 path->pathdata.Count += count-1;
754 GdipClosePathFigure(path);
761 GpStatus WINGDIPAPI GdipAddPathPieI(GpPath *path, INT x, INT y, INT width, INT height,
762 REAL startAngle, REAL sweepAngle)
764 TRACE("(%p, %d, %d, %d, %d, %.2f, %.2f)\n",
765 path, x, y, width, height, startAngle, sweepAngle);
767 return GdipAddPathPieI(path, (REAL)x, (REAL)y, (REAL)width, (REAL)height, startAngle, sweepAngle);
770 GpStatus WINGDIPAPI GdipAddPathPolygon(GpPath *path, GDIPCONST GpPointF *points, INT count)
774 TRACE("(%p, %p, %d)\n", path, points, count);
776 if(!path || !points || count < 3)
777 return InvalidParameter;
779 if(!lengthen_path(path, count))
782 old_count = path->pathdata.Count;
784 memcpy(&path->pathdata.Points[old_count], points, count*sizeof(GpPointF));
785 memset(&path->pathdata.Types[old_count + 1], PathPointTypeLine, count - 1);
787 /* A polygon is an intrinsic figure */
788 path->pathdata.Types[old_count] = PathPointTypeStart;
789 path->pathdata.Types[old_count + count - 1] |= PathPointTypeCloseSubpath;
790 path->newfigure = TRUE;
791 path->pathdata.Count += count;
796 GpStatus WINGDIPAPI GdipAddPathPolygonI(GpPath *path, GDIPCONST GpPoint *points, INT count)
802 TRACE("(%p, %p, %d)\n", path, points, count);
804 if(!points || count < 3)
805 return InvalidParameter;
807 ptf = GdipAlloc(sizeof(GpPointF) * count);
811 for(i = 0; i < count; i++){
812 ptf[i].X = (REAL)points[i].X;
813 ptf[i].Y = (REAL)points[i].Y;
816 status = GdipAddPathPolygon(path, ptf, count);
823 GpStatus WINGDIPAPI GdipClonePath(GpPath* path, GpPath **clone)
825 TRACE("(%p, %p)\n", path, clone);
828 return InvalidParameter;
830 *clone = GdipAlloc(sizeof(GpPath));
831 if(!*clone) return OutOfMemory;
835 (*clone)->pathdata.Points = GdipAlloc(path->datalen * sizeof(PointF));
836 (*clone)->pathdata.Types = GdipAlloc(path->datalen);
837 if(!(*clone)->pathdata.Points || !(*clone)->pathdata.Types){
839 GdipFree((*clone)->pathdata.Points);
840 GdipFree((*clone)->pathdata.Types);
844 memcpy((*clone)->pathdata.Points, path->pathdata.Points,
845 path->datalen * sizeof(PointF));
846 memcpy((*clone)->pathdata.Types, path->pathdata.Types, path->datalen);
851 GpStatus WINGDIPAPI GdipClosePathFigure(GpPath* path)
853 TRACE("(%p)\n", path);
856 return InvalidParameter;
858 if(path->pathdata.Count > 0){
859 path->pathdata.Types[path->pathdata.Count - 1] |= PathPointTypeCloseSubpath;
860 path->newfigure = TRUE;
866 GpStatus WINGDIPAPI GdipClosePathFigures(GpPath* path)
870 TRACE("(%p)\n", path);
873 return InvalidParameter;
875 for(i = 1; i < path->pathdata.Count; i++){
876 if(path->pathdata.Types[i] == PathPointTypeStart)
877 path->pathdata.Types[i-1] |= PathPointTypeCloseSubpath;
880 path->newfigure = TRUE;
885 GpStatus WINGDIPAPI GdipCreatePath(GpFillMode fill, GpPath **path)
887 TRACE("(%d, %p)\n", fill, path);
890 return InvalidParameter;
892 *path = GdipAlloc(sizeof(GpPath));
893 if(!*path) return OutOfMemory;
895 (*path)->fill = fill;
896 (*path)->newfigure = TRUE;
901 GpStatus WINGDIPAPI GdipCreatePath2(GDIPCONST GpPointF* points,
902 GDIPCONST BYTE* types, INT count, GpFillMode fill, GpPath **path)
904 TRACE("(%p, %p, %d, %d, %p)\n", points, types, count, fill, path);
907 return InvalidParameter;
909 *path = GdipAlloc(sizeof(GpPath));
910 if(!*path) return OutOfMemory;
912 (*path)->pathdata.Points = GdipAlloc(count * sizeof(PointF));
913 (*path)->pathdata.Types = GdipAlloc(count);
915 if(!(*path)->pathdata.Points || !(*path)->pathdata.Types){
916 GdipFree((*path)->pathdata.Points);
917 GdipFree((*path)->pathdata.Types);
922 memcpy((*path)->pathdata.Points, points, count * sizeof(PointF));
923 memcpy((*path)->pathdata.Types, types, count);
924 (*path)->pathdata.Count = count;
925 (*path)->datalen = count;
927 (*path)->fill = fill;
928 (*path)->newfigure = TRUE;
933 GpStatus WINGDIPAPI GdipCreatePath2I(GDIPCONST GpPoint* points,
934 GDIPCONST BYTE* types, INT count, GpFillMode fill, GpPath **path)
940 TRACE("(%p, %p, %d, %d, %p)\n", points, types, count, fill, path);
942 ptF = GdipAlloc(sizeof(GpPointF)*count);
944 for(i = 0;i < count; i++){
945 ptF[i].X = (REAL)points[i].X;
946 ptF[i].Y = (REAL)points[i].Y;
949 ret = GdipCreatePath2(ptF, types, count, fill, path);
956 GpStatus WINGDIPAPI GdipDeletePath(GpPath *path)
958 TRACE("(%p)\n", path);
961 return InvalidParameter;
963 GdipFree(path->pathdata.Points);
964 GdipFree(path->pathdata.Types);
970 GpStatus WINGDIPAPI GdipFlattenPath(GpPath *path, GpMatrix* matrix, REAL flatness)
972 path_list_node_t *list, *node;
977 TRACE("(%p, %p, %.2f)\n", path, matrix, flatness);
980 return InvalidParameter;
983 WARN("transformation not supported yet!\n");
984 return NotImplemented;
987 if(path->pathdata.Count == 0)
990 pt = path->pathdata.Points[0];
991 if(!init_path_list(&list, pt.X, pt.Y))
996 while(i < path->pathdata.Count){
998 BYTE type = path->pathdata.Types[i] & PathPointTypePathTypeMask;
999 path_list_node_t *start;
1001 pt = path->pathdata.Points[i];
1003 /* save last start point index */
1004 if(type == PathPointTypeStart)
1007 /* always add line points and start points */
1008 if((type == PathPointTypeStart) || (type == PathPointTypeLine)){
1009 if(!add_path_list_node(node, pt.X, pt.Y, path->pathdata.Types[i]))
1017 /* Bezier curve always stored as 4 points */
1018 if((path->pathdata.Types[i-1] & PathPointTypePathTypeMask) != PathPointTypeStart){
1019 type = (path->pathdata.Types[i] & ~PathPointTypePathTypeMask) | PathPointTypeLine;
1020 if(!add_path_list_node(node, pt.X, pt.Y, type))
1026 /* test for closed figure */
1027 if(path->pathdata.Types[i+1] & PathPointTypeCloseSubpath){
1028 pt = path->pathdata.Points[startidx];
1034 pt = path->pathdata.Points[i];
1038 /* add Bezier end point */
1039 type = (path->pathdata.Types[i] & ~PathPointTypePathTypeMask) | PathPointTypeLine;
1040 if(!add_path_list_node(node, pt.X, pt.Y, type))
1045 if(!flatten_bezier(start, path->pathdata.Points[i-2].X, path->pathdata.Points[i-2].Y,
1046 path->pathdata.Points[i-1].X, path->pathdata.Points[i-1].Y,
1053 /* store path data back */
1054 i = path_list_count(list);
1055 if(!lengthen_path(path, i))
1057 path->pathdata.Count = i;
1060 for(i = 0; i < path->pathdata.Count; i++){
1061 path->pathdata.Points[i] = node->pt;
1062 path->pathdata.Types[i] = node->type;
1066 free_path_list(list);
1070 free_path_list(list);
1074 GpStatus WINGDIPAPI GdipGetPathData(GpPath *path, GpPathData* pathData)
1076 TRACE("(%p, %p)\n", path, pathData);
1078 if(!path || !pathData)
1079 return InvalidParameter;
1081 /* Only copy data. pathData allocation/freeing controlled by wrapper class.
1082 Assumed that pathData is enough wide to get all data - controlled by wrapper too. */
1083 memcpy(pathData->Points, path->pathdata.Points, sizeof(PointF) * pathData->Count);
1084 memcpy(pathData->Types , path->pathdata.Types , pathData->Count);
1089 GpStatus WINGDIPAPI GdipGetPathFillMode(GpPath *path, GpFillMode *fillmode)
1091 TRACE("(%p, %p)\n", path, fillmode);
1093 if(!path || !fillmode)
1094 return InvalidParameter;
1096 *fillmode = path->fill;
1101 GpStatus WINGDIPAPI GdipGetPathLastPoint(GpPath* path, GpPointF* lastPoint)
1105 TRACE("(%p, %p)\n", path, lastPoint);
1107 if(!path || !lastPoint)
1108 return InvalidParameter;
1110 count = path->pathdata.Count;
1112 *lastPoint = path->pathdata.Points[count-1];
1117 GpStatus WINGDIPAPI GdipGetPathPoints(GpPath *path, GpPointF* points, INT count)
1119 TRACE("(%p, %p, %d)\n", path, points, count);
1122 return InvalidParameter;
1124 if(count < path->pathdata.Count)
1125 return InsufficientBuffer;
1127 memcpy(points, path->pathdata.Points, path->pathdata.Count * sizeof(GpPointF));
1132 GpStatus WINGDIPAPI GdipGetPathPointsI(GpPath *path, GpPoint* points, INT count)
1138 TRACE("(%p, %p, %d)\n", path, points, count);
1141 return InvalidParameter;
1143 ptf = GdipAlloc(sizeof(GpPointF)*count);
1144 if(!ptf) return OutOfMemory;
1146 ret = GdipGetPathPoints(path,ptf,count);
1148 for(i = 0;i < count;i++){
1149 points[i].X = roundr(ptf[i].X);
1150 points[i].Y = roundr(ptf[i].Y);
1157 GpStatus WINGDIPAPI GdipGetPathTypes(GpPath *path, BYTE* types, INT count)
1159 TRACE("(%p, %p, %d)\n", path, types, count);
1162 return InvalidParameter;
1164 if(count < path->pathdata.Count)
1165 return InsufficientBuffer;
1167 memcpy(types, path->pathdata.Types, path->pathdata.Count);
1172 /* Windows expands the bounding box to the maximum possible bounding box
1173 * for a given pen. For example, if a line join can extend past the point
1174 * it's joining by x units, the bounding box is extended by x units in every
1175 * direction (even though this is too conservative for most cases). */
1176 GpStatus WINGDIPAPI GdipGetPathWorldBounds(GpPath* path, GpRectF* bounds,
1177 GDIPCONST GpMatrix *matrix, GDIPCONST GpPen *pen)
1179 GpPointF * points, temp_pts[4];
1181 REAL path_width = 1.0, width, height, temp, low_x, low_y, high_x, high_y;
1183 TRACE("(%p, %p, %p, %p)\n", path, bounds, matrix, pen);
1185 /* Matrix and pen can be null. */
1186 if(!path || !bounds)
1187 return InvalidParameter;
1189 /* If path is empty just return. */
1190 count = path->pathdata.Count;
1192 bounds->X = bounds->Y = bounds->Width = bounds->Height = 0.0;
1196 points = path->pathdata.Points;
1198 low_x = high_x = points[0].X;
1199 low_y = high_y = points[0].Y;
1201 for(i = 1; i < count; i++){
1202 low_x = min(low_x, points[i].X);
1203 low_y = min(low_y, points[i].Y);
1204 high_x = max(high_x, points[i].X);
1205 high_y = max(high_y, points[i].Y);
1208 width = high_x - low_x;
1209 height = high_y - low_y;
1211 /* This looks unusual but it's the only way I can imitate windows. */
1213 temp_pts[0].X = low_x;
1214 temp_pts[0].Y = low_y;
1215 temp_pts[1].X = low_x;
1216 temp_pts[1].Y = high_y;
1217 temp_pts[2].X = high_x;
1218 temp_pts[2].Y = high_y;
1219 temp_pts[3].X = high_x;
1220 temp_pts[3].Y = low_y;
1222 GdipTransformMatrixPoints((GpMatrix*)matrix, temp_pts, 4);
1223 low_x = temp_pts[0].X;
1224 low_y = temp_pts[0].Y;
1226 for(i = 1; i < 4; i++){
1227 low_x = min(low_x, temp_pts[i].X);
1228 low_y = min(low_y, temp_pts[i].Y);
1232 width = height * fabs(matrix->matrix[2]) + width * fabs(matrix->matrix[0]);
1233 height = height * fabs(matrix->matrix[3]) + temp * fabs(matrix->matrix[1]);
1237 path_width = pen->width / 2.0;
1240 path_width = max(path_width, pen->width * pen->miterlimit / 2.0);
1241 /* FIXME: this should probably also check for the startcap */
1242 if(pen->endcap & LineCapNoAnchor)
1243 path_width = max(path_width, pen->width * 2.2);
1245 low_x -= path_width;
1246 low_y -= path_width;
1247 width += 2.0 * path_width;
1248 height += 2.0 * path_width;
1253 bounds->Width = width;
1254 bounds->Height = height;
1259 GpStatus WINGDIPAPI GdipGetPathWorldBoundsI(GpPath* path, GpRect* bounds,
1260 GDIPCONST GpMatrix *matrix, GDIPCONST GpPen *pen)
1265 TRACE("(%p, %p, %p, %p)\n", path, bounds, matrix, pen);
1267 ret = GdipGetPathWorldBounds(path,&boundsF,matrix,pen);
1270 bounds->X = roundr(boundsF.X);
1271 bounds->Y = roundr(boundsF.Y);
1272 bounds->Width = roundr(boundsF.Width);
1273 bounds->Height = roundr(boundsF.Height);
1279 GpStatus WINGDIPAPI GdipGetPointCount(GpPath *path, INT *count)
1281 TRACE("(%p, %p)\n", path, count);
1284 return InvalidParameter;
1286 *count = path->pathdata.Count;
1291 GpStatus WINGDIPAPI GdipReversePath(GpPath* path)
1294 INT start = 0; /* position in reversed path */
1297 TRACE("(%p)\n", path);
1300 return InvalidParameter;
1302 count = path->pathdata.Count;
1304 if(count == 0) return Ok;
1306 revpath.Points = GdipAlloc(sizeof(GpPointF)*count);
1307 revpath.Types = GdipAlloc(sizeof(BYTE)*count);
1308 revpath.Count = count;
1309 if(!revpath.Points || !revpath.Types){
1310 GdipFree(revpath.Points);
1311 GdipFree(revpath.Types);
1315 for(i = 0; i < count; i++){
1317 /* find next start point */
1318 if(path->pathdata.Types[count-i-1] == PathPointTypeStart){
1320 for(j = start; j <= i; j++){
1321 revpath.Points[j] = path->pathdata.Points[count-j-1];
1322 revpath.Types[j] = path->pathdata.Types[count-j-1];
1324 /* mark start point */
1325 revpath.Types[start] = PathPointTypeStart;
1326 /* set 'figure' endpoint type */
1328 revpath.Types[i] = path->pathdata.Types[count-start-1] & ~PathPointTypePathTypeMask;
1329 revpath.Types[i] |= revpath.Types[i-1];
1332 revpath.Types[i] = path->pathdata.Types[start];
1338 memcpy(path->pathdata.Points, revpath.Points, sizeof(GpPointF)*count);
1339 memcpy(path->pathdata.Types, revpath.Types, sizeof(BYTE)*count);
1341 GdipFree(revpath.Points);
1342 GdipFree(revpath.Types);
1347 GpStatus WINGDIPAPI GdipIsOutlineVisiblePathPointI(GpPath* path, INT x, INT y,
1348 GpPen *pen, GpGraphics *graphics, BOOL *result)
1350 TRACE("(%p, %d, %d, %p, %p, %p)\n", path, x, y, pen, graphics, result);
1352 return GdipIsOutlineVisiblePathPoint(path, x, y, pen, graphics, result);
1355 GpStatus WINGDIPAPI GdipIsOutlineVisiblePathPoint(GpPath* path, REAL x, REAL y,
1356 GpPen *pen, GpGraphics *graphics, BOOL *result)
1361 return InvalidParameter;
1364 FIXME("not implemented\n");
1366 return NotImplemented;
1369 GpStatus WINGDIPAPI GdipIsVisiblePathPointI(GpPath* path, INT x, INT y, GpGraphics *graphics, BOOL *result)
1371 TRACE("(%p, %d, %d, %p, %p)\n", path, x, y, graphics, result);
1373 return GdipIsVisiblePathPoint(path, x, y, graphics, result);
1376 GpStatus WINGDIPAPI GdipIsVisiblePathPoint(GpPath* path, REAL x, REAL y, GpGraphics *graphics, BOOL *result)
1380 if(!path) return InvalidParameter;
1383 FIXME("not implemented\n");
1385 return NotImplemented;
1388 GpStatus WINGDIPAPI GdipStartPathFigure(GpPath *path)
1390 TRACE("(%p)\n", path);
1393 return InvalidParameter;
1395 path->newfigure = TRUE;
1400 GpStatus WINGDIPAPI GdipResetPath(GpPath *path)
1402 TRACE("(%p)\n", path);
1405 return InvalidParameter;
1407 path->pathdata.Count = 0;
1408 path->newfigure = TRUE;
1409 path->fill = FillModeAlternate;
1414 GpStatus WINGDIPAPI GdipSetPathFillMode(GpPath *path, GpFillMode fill)
1416 TRACE("(%p, %d)\n", path, fill);
1419 return InvalidParameter;
1426 GpStatus WINGDIPAPI GdipTransformPath(GpPath *path, GpMatrix *matrix)
1428 TRACE("(%p, %p)\n", path, matrix);
1431 return InvalidParameter;
1433 if(path->pathdata.Count == 0)
1436 return GdipTransformMatrixPoints(matrix, path->pathdata.Points,
1437 path->pathdata.Count);
1440 GpStatus WINGDIPAPI GdipAddPathRectangle(GpPath *path, REAL x, REAL y,
1441 REAL width, REAL height)
1448 TRACE("(%p, %.2f, %.2f, %.2f, %.2f)\n", path, x, y, width, height);
1450 if(!path || width < 0.0 || height < 0.0)
1451 return InvalidParameter;
1453 /* make a backup copy of path data */
1454 if((retstat = GdipClonePath(path, &backup)) != Ok)
1457 /* rectangle should start as new path */
1458 old_new = path->newfigure;
1459 path->newfigure = TRUE;
1460 if((retstat = GdipAddPathLine(path,x,y,x+width,y)) != Ok){
1461 path->newfigure = old_new;
1466 ptf[0].Y = y+height;
1468 ptf[1].Y = y+height;
1470 if((retstat = GdipAddPathLine2(path, ptf, 2)) != Ok) goto fail;
1471 path->pathdata.Types[path->pathdata.Count-1] |= PathPointTypeCloseSubpath;
1474 GdipDeletePath(backup);
1479 GdipDeletePath(path);
1480 GdipClonePath(backup, &path);
1481 GdipDeletePath(backup);
1486 GpStatus WINGDIPAPI GdipAddPathRectangleI(GpPath *path, INT x, INT y,
1487 INT width, INT height)
1489 TRACE("(%p, %d, %d, %d, %d)\n", path, x, y, width, height);
1491 return GdipAddPathRectangle(path,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
1494 GpStatus WINGDIPAPI GdipAddPathRectangles(GpPath *path, GDIPCONST GpRectF *rects, INT count)
1500 TRACE("(%p, %p, %d)\n", path, rects, count);
1502 /* count == 0 - verified condition */
1503 if(!path || !rects || count == 0)
1504 return InvalidParameter;
1509 /* make a backup copy */
1510 if((retstat = GdipClonePath(path, &backup)) != Ok)
1513 for(i = 0; i < count; i++){
1514 if((retstat = GdipAddPathRectangle(path,rects[i].X,rects[i].Y,rects[i].Width,rects[i].Height)) != Ok)
1519 GdipDeletePath(backup);
1524 GdipDeletePath(path);
1525 GdipClonePath(backup, &path);
1526 GdipDeletePath(backup);
1531 GpStatus WINGDIPAPI GdipAddPathRectanglesI(GpPath *path, GDIPCONST GpRect *rects, INT count)
1537 TRACE("(%p, %p, %d)\n", path, rects, count);
1539 if(!rects || count == 0)
1540 return InvalidParameter;
1545 rectsF = GdipAlloc(sizeof(GpRectF)*count);
1547 for(i = 0;i < count;i++){
1548 rectsF[i].X = (REAL)rects[i].X;
1549 rectsF[i].Y = (REAL)rects[i].Y;
1550 rectsF[i].Width = (REAL)rects[i].Width;
1551 rectsF[i].Height = (REAL)rects[i].Height;
1554 retstat = GdipAddPathRectangles(path, rectsF, count);
1560 GpStatus WINGDIPAPI GdipSetPathMarker(GpPath* path)
1564 TRACE("(%p)\n", path);
1567 return InvalidParameter;
1569 count = path->pathdata.Count;
1571 /* set marker flag */
1573 path->pathdata.Types[count-1] |= PathPointTypePathMarker;
1578 GpStatus WINGDIPAPI GdipClearPathMarkers(GpPath* path)
1583 TRACE("(%p)\n", path);
1586 return InvalidParameter;
1588 count = path->pathdata.Count;
1590 for(i = 0; i < count - 1; i++){
1591 path->pathdata.Types[i] &= ~PathPointTypePathMarker;