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1 #define __SP_LIVAROT_C__
2 /*
3 * splivarot.cpp
4 * Inkscape
5 *
6 * Created by fred on Fri Dec 05 2003.
7 * tweaked endlessly by bulia byak <buliabyak@users.sf.net>
8 * public domain
9 *
10 */
12 /*
13 * contains lots of stitched pieces of path-chemistry.c
14 */
16 #ifdef HAVE_CONFIG_H
17 # include <config.h>
18 #endif
20 #include <cstring>
21 #include <string>
22 #include <vector>
23 #include <glib/gmem.h>
24 #include "xml/repr.h"
25 #include "svg/svg.h"
26 #include "sp-path.h"
27 #include "sp-shape.h"
28 #include "sp-image.h"
29 #include "marker.h"
30 #include "enums.h"
31 #include "sp-text.h"
32 #include "sp-flowtext.h"
33 #include "text-editing.h"
34 #include "sp-item-group.h"
35 #include "style.h"
36 #include "document.h"
37 #include "message-stack.h"
38 #include "selection.h"
39 #include "desktop-handles.h"
40 #include "desktop.h"
41 #include "display/canvas-bpath.h"
42 #include "display/curve.h"
43 #include <glibmm/i18n.h>
44 #include "preferences.h"
46 #include "xml/repr.h"
47 #include "xml/repr-sorting.h"
48 #include <2geom/pathvector.h>
49 #include <libnr/nr-scale-matrix-ops.h>
50 #include "helper/geom.h"
52 #include "livarot/Path.h"
53 #include "livarot/Shape.h"
55 #include "splivarot.h"
57 bool Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
59 void sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
60 void sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset);
61 void sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating);
63 void
64 sp_selected_path_union(SPDesktop *desktop)
65 {
66 sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
67 }
69 void
70 sp_selected_path_union_skip_undo(SPDesktop *desktop)
71 {
72 sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_NONE, _("Union"));
73 }
75 void
76 sp_selected_path_intersect(SPDesktop *desktop)
77 {
78 sp_selected_path_boolop(desktop, bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
79 }
81 void
82 sp_selected_path_diff(SPDesktop *desktop)
83 {
84 sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
85 }
87 void
88 sp_selected_path_diff_skip_undo(SPDesktop *desktop)
89 {
90 sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_NONE, _("Difference"));
91 }
93 void
94 sp_selected_path_symdiff(SPDesktop *desktop)
95 {
96 sp_selected_path_boolop(desktop, bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
97 }
98 void
99 sp_selected_path_cut(SPDesktop *desktop)
100 {
101 sp_selected_path_boolop(desktop, bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
102 }
103 void
104 sp_selected_path_slice(SPDesktop *desktop)
105 {
106 sp_selected_path_boolop(desktop, bool_op_slice, SP_VERB_SELECTION_SLICE, _("Cut path"));
107 }
110 // boolean operations
111 // take the source paths from the file, do the operation, delete the originals and add the results
112 void
113 sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb, const Glib::ustring description)
114 {
115 Inkscape::Selection *selection = sp_desktop_selection(desktop);
117 GSList *il = (GSList *) selection->itemList();
119 // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
120 if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
121 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
122 return;
123 }
124 else if ( g_slist_length(il) < 1 ) {
125 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
126 return;
127 }
129 if (g_slist_length(il) > 2) {
130 if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
131 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, division, or path cut."));
132 return;
133 }
134 }
136 // reverseOrderForOp marks whether the order of the list is the top->down order
137 // it's only used when there are 2 objects, and for operations who need to know the
138 // topmost object (differences, cuts)
139 bool reverseOrderForOp = false;
141 if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice) {
142 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
143 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
144 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
146 if (a == NULL || b == NULL) {
147 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
148 return;
149 }
151 if (Ancetre(a, b)) {
152 // a is the parent of b, already in the proper order
153 } else if (Ancetre(b, a)) {
154 // reverse order
155 reverseOrderForOp = true;
156 } else {
158 // objects are not in parent/child relationship;
159 // find their lowest common ancestor
160 Inkscape::XML::Node *dad = LCA(a, b);
161 if (dad == NULL) {
162 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
163 return;
164 }
166 // find the children of the LCA that lead from it to the a and b
167 Inkscape::XML::Node *as = AncetreFils(a, dad);
168 Inkscape::XML::Node *bs = AncetreFils(b, dad);
170 // find out which comes first
171 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
172 if (child == as) {
173 /* a first, so reverse. */
174 reverseOrderForOp = true;
175 break;
176 }
177 if (child == bs)
178 break;
179 }
180 }
181 }
183 il = g_slist_copy(il);
185 // first check if all the input objects have shapes
186 // otherwise bail out
187 for (GSList *l = il; l != NULL; l = l->next)
188 {
189 SPItem *item = SP_ITEM(l->data);
190 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
191 {
192 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
193 g_slist_free(il);
194 return;
195 }
196 }
198 // extract the livarot Paths from the source objects
199 // also get the winding rule specified in the style
200 int nbOriginaux = g_slist_length(il);
201 std::vector<Path *> originaux(nbOriginaux);
202 std::vector<FillRule> origWind(nbOriginaux);
203 int curOrig;
204 {
205 curOrig = 0;
206 for (GSList *l = il; l != NULL; l = l->next)
207 {
208 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
209 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
210 if (val && strcmp(val, "nonzero") == 0) {
211 origWind[curOrig]= fill_nonZero;
212 } else if (val && strcmp(val, "evenodd") == 0) {
213 origWind[curOrig]= fill_oddEven;
214 } else {
215 origWind[curOrig]= fill_nonZero;
216 }
218 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
219 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
220 {
221 for (int i = curOrig; i >= 0; i--) delete originaux[i];
222 g_slist_free(il);
223 return;
224 }
225 curOrig++;
226 }
227 }
228 // reverse if needed
229 // note that the selection list keeps its order
230 if ( reverseOrderForOp ) {
231 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
232 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
233 }
235 // and work
236 // some temporary instances, first
237 Shape *theShapeA = new Shape;
238 Shape *theShapeB = new Shape;
239 Shape *theShape = new Shape;
240 Path *res = new Path;
241 res->SetBackData(false);
242 Path::cut_position *toCut=NULL;
243 int nbToCut=0;
245 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
246 // true boolean op
247 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
248 originaux[0]->ConvertWithBackData(0.1);
250 originaux[0]->Fill(theShape, 0);
252 theShapeA->ConvertToShape(theShape, origWind[0]);
254 curOrig = 1;
255 for (GSList *l = il->next; l != NULL; l = l->next) {
256 originaux[curOrig]->ConvertWithBackData(0.1);
258 originaux[curOrig]->Fill(theShape, curOrig);
260 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
262 // les elements arrivent en ordre inverse dans la liste
263 theShape->Booleen(theShapeB, theShapeA, bop);
265 {
266 Shape *swap = theShape;
267 theShape = theShapeA;
268 theShapeA = swap;
269 }
270 curOrig++;
271 }
273 {
274 Shape *swap = theShape;
275 theShape = theShapeA;
276 theShapeA = swap;
277 }
279 } else if ( bop == bool_op_cut ) {
280 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
281 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
282 // it is just uncrossed, and cleaned from duplicate edges and points
283 // then it's fed to Booleen() which will uncross it against the other path
284 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
285 // thus making a polygon. the weight of the edges of the cut are all 0, but
286 // the Booleen need to invert the ones inside the source polygon (for the subsequent
287 // ConvertToForme)
289 // the cut path needs to have the highest pathID in the back data
290 // that's how the Booleen() function knows it's an edge of the cut
292 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
293 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
294 // left it at 1.0. Investigate replacing this by a combination of difference and
295 // intersection of the same two paths. -- bb
296 {
297 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
298 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
299 }
300 originaux[0]->ConvertWithBackData(1.0);
302 originaux[0]->Fill(theShape, 0);
304 theShapeA->ConvertToShape(theShape, origWind[0]);
306 originaux[1]->ConvertWithBackData(1.0);
308 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
310 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
312 // les elements arrivent en ordre inverse dans la liste
313 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
315 } else if ( bop == bool_op_slice ) {
316 // slice is not really a boolean operation
317 // you just put the 2 shapes in a single polygon, uncross it
318 // the points where the degree is > 2 are intersections
319 // just check it's an intersection on the path you want to cut, and keep it
320 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
321 // make new subpath at each one of these positions
322 // inversion pour l'op\8eration
323 {
324 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
325 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
326 }
327 originaux[0]->ConvertWithBackData(1.0);
329 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
331 originaux[1]->ConvertWithBackData(1.0);
333 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
335 theShape->ConvertToShape(theShapeA, fill_justDont);
337 if ( theShape->hasBackData() ) {
338 // should always be the case, but ya never know
339 {
340 for (int i = 0; i < theShape->numberOfPoints(); i++) {
341 if ( theShape->getPoint(i).totalDegree() > 2 ) {
342 // possibly an intersection
343 // we need to check that at least one edge from the source path is incident to it
344 // before we declare it's an intersection
345 int cb = theShape->getPoint(i).incidentEdge[FIRST];
346 int nbOrig=0;
347 int nbOther=0;
348 int piece=-1;
349 float t=0.0;
350 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
351 if ( theShape->ebData[cb].pathID == 0 ) {
352 // the source has an edge incident to the point, get its position on the path
353 piece=theShape->ebData[cb].pieceID;
354 if ( theShape->getEdge(cb).st == i ) {
355 t=theShape->ebData[cb].tSt;
356 } else {
357 t=theShape->ebData[cb].tEn;
358 }
359 nbOrig++;
360 }
361 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
362 cb=theShape->NextAt(i, cb);
363 }
364 if ( nbOrig > 0 && nbOther > 0 ) {
365 // point incident to both path and cut: an intersection
366 // note that you only keep one position on the source; you could have degenerate
367 // cases where the source crosses itself at this point, and you wouyld miss an intersection
368 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
369 toCut[nbToCut].piece=piece;
370 toCut[nbToCut].t=t;
371 nbToCut++;
372 }
373 }
374 }
375 }
376 {
377 // i think it's useless now
378 int i = theShape->numberOfEdges() - 1;
379 for (;i>=0;i--) {
380 if ( theShape->ebData[i].pathID == 1 ) {
381 theShape->SubEdge(i);
382 }
383 }
384 }
386 }
387 }
389 int* nesting=NULL;
390 int* conts=NULL;
391 int nbNest=0;
392 // pour compenser le swap juste avant
393 if ( bop == bool_op_slice ) {
394 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
395 // res->ConvertForcedToMoveTo();
396 res->Copy(originaux[0]);
397 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
398 free(toCut);
399 } else if ( bop == bool_op_cut ) {
400 // il faut appeler pour desallouer PointData (pas vital, mais bon)
401 // the Booleen() function did not deallocated the point_data array in theShape, because this
402 // function needs it.
403 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
404 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
405 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
406 } else {
407 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
408 }
410 delete theShape;
411 delete theShapeA;
412 delete theShapeB;
413 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
415 if (res->descr_cmd.size() <= 1)
416 {
417 // only one command, presumably a moveto: it isn't a path
418 for (GSList *l = il; l != NULL; l = l->next)
419 {
420 SP_OBJECT(l->data)->deleteObject();
421 }
422 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
423 description);
424 selection->clear();
426 delete res;
427 g_slist_free(il);
428 return;
429 }
431 // get the source path object
432 SPObject *source;
433 if ( bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
434 if (reverseOrderForOp) {
435 source = SP_OBJECT(il->data);
436 } else {
437 source = SP_OBJECT(il->next->data);
438 }
439 } else {
440 // find out the bottom object
441 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
443 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
445 source = sp_desktop_document(desktop)->
446 getObjectByRepr((Inkscape::XML::Node *)sorted->data);
448 g_slist_free(sorted);
449 }
451 // adjust style properties that depend on a possible transform in the source object in order
452 // to get a correct style attribute for the new path
453 SPItem* item_source = SP_ITEM(source);
454 Geom::Matrix i2doc(sp_item_i2doc_affine(item_source));
455 sp_item_adjust_stroke(item_source, i2doc.descrim());
456 sp_item_adjust_pattern(item_source, i2doc);
457 sp_item_adjust_gradient(item_source, i2doc);
458 sp_item_adjust_livepatheffect(item_source, i2doc);
460 Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
462 // remember important aspects of the source path, to be restored
463 gint pos = repr_source->position();
464 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
465 gchar const *id = repr_source->attribute("id");
466 gchar const *style = repr_source->attribute("style");
467 gchar const *mask = repr_source->attribute("mask");
468 gchar const *clip_path = repr_source->attribute("clip-path");
469 gchar *title = source->title();
470 gchar *desc = source->desc();
471 // remove source paths
472 selection->clear();
473 for (GSList *l = il; l != NULL; l = l->next) {
474 // if this is the bottommost object,
475 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
476 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
477 SP_OBJECT(l->data)->deleteObject(false);
478 } else {
479 // delete the object for real, so that its clones can take appropriate action
480 SP_OBJECT(l->data)->deleteObject();
481 }
482 }
483 g_slist_free(il);
485 // premultiply by the inverse of parent's repr
486 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
487 Geom::Matrix local (sp_item_i2doc_affine(parent_item));
488 gchar *transform = sp_svg_transform_write(local.inverse());
490 // now that we have the result, add it on the canvas
491 if ( bop == bool_op_cut || bop == bool_op_slice ) {
492 int nbRP=0;
493 Path** resPath;
494 if ( bop == bool_op_slice ) {
495 // there are moveto's at each intersection, but it's still one unique path
496 // so break it down and add each subpath independently
497 // we could call break_apart to do this, but while we have the description...
498 resPath=res->SubPaths(nbRP, false);
499 } else {
500 // cut operation is a bit wicked: you need to keep holes
501 // that's why you needed the nesting
502 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
503 // to get the path for each part of the polygon. that's why you need the nesting info:
504 // to know in wich subpath to add a subpath
505 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
507 // cleaning
508 if ( conts ) free(conts);
509 if ( nesting ) free(nesting);
510 }
512 // add all the pieces resulting from cut or slice
513 for (int i=0;i<nbRP;i++) {
514 gchar *d = resPath[i]->svg_dump_path();
516 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
517 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
518 repr->setAttribute("style", style);
519 if (mask)
520 repr->setAttribute("mask", mask);
521 if (clip_path)
522 repr->setAttribute("clip-path", clip_path);
524 repr->setAttribute("d", d);
525 g_free(d);
527 // for slice, remove fill
528 if (bop == bool_op_slice) {
529 SPCSSAttr *css;
531 css = sp_repr_css_attr_new();
532 sp_repr_css_set_property(css, "fill", "none");
534 sp_repr_css_change(repr, css, "style");
536 sp_repr_css_attr_unref(css);
537 }
539 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
540 // this means it's basically random which of the pieces inherits the original's id and clones
541 // a better algorithm might figure out e.g. the biggest piece
542 repr->setAttribute("id", id);
544 repr->setAttribute("transform", transform);
546 // add the new repr to the parent
547 parent->appendChild(repr);
549 // move to the saved position
550 repr->setPosition(pos > 0 ? pos : 0);
552 selection->add(repr);
553 Inkscape::GC::release(repr);
555 delete resPath[i];
556 }
557 if ( resPath ) free(resPath);
559 } else {
560 gchar *d = res->svg_dump_path();
562 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
563 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
564 repr->setAttribute("style", style);
566 if ( mask )
567 repr->setAttribute("mask", mask);
569 if ( clip_path )
570 repr->setAttribute("clip-path", clip_path);
572 repr->setAttribute("d", d);
573 g_free(d);
575 repr->setAttribute("transform", transform);
577 repr->setAttribute("id", id);
578 parent->appendChild(repr);
579 if (title) {
580 sp_desktop_document(desktop)->getObjectByRepr(repr)->setTitle(title);
581 }
582 if (desc) {
583 sp_desktop_document(desktop)->getObjectByRepr(repr)->setDesc(desc);
584 }
585 repr->setPosition(pos > 0 ? pos : 0);
587 selection->add(repr);
588 Inkscape::GC::release(repr);
589 }
591 g_free(transform);
592 if (title) g_free(title);
593 if (desc) g_free(desc);
595 if (verb != SP_VERB_NONE) {
596 sp_document_done(sp_desktop_document(desktop), verb, description);
597 }
599 delete res;
600 }
602 static
603 void sp_selected_path_outline_add_marker( SPObject *marker_object, Geom::Matrix marker_transform,
604 Geom::Scale stroke_scale, Geom::Matrix transform,
605 Inkscape::XML::Node *g_repr, Inkscape::XML::Document *xml_doc, SPDocument * doc )
606 {
607 SPMarker* marker = SP_MARKER (marker_object);
608 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (marker_object));
610 Geom::Matrix tr(marker_transform);
612 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
613 tr = stroke_scale * tr;
614 }
616 // total marker transform
617 tr = marker_item->transform * marker->c2p * tr * transform;
619 if (SP_OBJECT_REPR(marker_item)) {
620 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
621 g_repr->appendChild(m_repr);
622 SPItem *marker_item = (SPItem *) doc->getObjectByRepr(m_repr);
623 sp_item_write_transform(marker_item, m_repr, tr);
624 }
625 }
627 static
628 void item_outline_add_marker( SPObject const *marker_object, Geom::Matrix marker_transform,
629 Geom::Scale stroke_scale, Geom::PathVector* pathv_in )
630 {
631 SPMarker* marker = SP_MARKER (marker_object);
632 SPItem* marker_item = sp_item_first_item_child(SP_OBJECT(marker_object));
634 Geom::Matrix tr(marker_transform);
635 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
636 tr = stroke_scale * tr;
637 }
638 // total marker transform
639 tr = marker_item->transform * marker->c2p * tr;
641 Geom::PathVector* marker_pathv = item_outline(marker_item);
643 if (marker_pathv) {
644 for (unsigned int j=0; j < marker_pathv->size(); j++) {
645 pathv_in->push_back((*marker_pathv)[j] * tr);
646 }
647 delete marker_pathv;
648 }
649 }
651 /**
652 * Returns a pathvector that is the outline of the stroked item, with markers.
653 * item must be SPShape of SPText.
654 */
655 Geom::PathVector* item_outline(SPItem const *item)
656 {
657 Geom::PathVector *ret_pathv = NULL;
659 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
660 return ret_pathv;
662 // no stroke: no outline
663 if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
664 return ret_pathv;
665 }
667 SPCurve *curve = NULL;
668 if (SP_IS_SHAPE(item)) {
669 curve = sp_shape_get_curve(SP_SHAPE(item));
670 } else if (SP_IS_TEXT(item)) {
671 curve = SP_TEXT(item)->getNormalizedBpath();
672 }
673 if (curve == NULL) {
674 return ret_pathv;
675 }
677 // remember old stroke style, to be set on fill
678 SPStyle *i_style = SP_OBJECT_STYLE(item);
680 Geom::Matrix const transform(item->transform);
681 float const scale = transform.descrim();
683 float o_width, o_miter;
684 JoinType o_join;
685 ButtType o_butt;
686 {
687 o_width = i_style->stroke_width.computed;
688 if (o_width < 0.1) {
689 o_width = 0.1;
690 }
691 o_miter = i_style->stroke_miterlimit.value * o_width;
693 switch (i_style->stroke_linejoin.computed) {
694 case SP_STROKE_LINEJOIN_MITER:
695 o_join = join_pointy;
696 break;
697 case SP_STROKE_LINEJOIN_ROUND:
698 o_join = join_round;
699 break;
700 default:
701 o_join = join_straight;
702 break;
703 }
705 switch (i_style->stroke_linecap.computed) {
706 case SP_STROKE_LINECAP_SQUARE:
707 o_butt = butt_square;
708 break;
709 case SP_STROKE_LINECAP_ROUND:
710 o_butt = butt_round;
711 break;
712 default:
713 o_butt = butt_straight;
714 break;
715 }
716 }
718 // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
719 Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curve->get_pathvector() );
721 Path *orig = new Path;
722 orig->LoadPathVector(pathv);
724 Path *res = new Path;
725 res->SetBackData(false);
727 if (i_style->stroke_dash.n_dash) {
728 // For dashed strokes, use Stroke method, because Outline can't do dashes
729 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
731 orig->ConvertWithBackData(0.1);
733 orig->DashPolylineFromStyle(i_style, scale, 0);
735 Shape* theShape = new Shape;
736 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
737 0.5 * o_miter);
738 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
740 Shape *theRes = new Shape;
742 theRes->ConvertToShape(theShape, fill_positive);
744 Path *originaux[1];
745 originaux[0] = res;
746 theRes->ConvertToForme(orig, 1, originaux);
748 res->Coalesce(5.0);
750 delete theShape;
751 delete theRes;
752 } else {
753 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
755 orig->Coalesce(0.5 * o_width);
757 Shape *theShape = new Shape;
758 Shape *theRes = new Shape;
760 res->ConvertWithBackData(1.0);
761 res->Fill(theShape, 0);
762 theRes->ConvertToShape(theShape, fill_positive);
764 Path *originaux[1];
765 originaux[0] = res;
766 theRes->ConvertToForme(orig, 1, originaux);
768 delete theShape;
769 delete theRes;
770 }
772 if (orig->descr_cmd.size() <= 1) {
773 // ca a merd\8e, ou bien le resultat est vide
774 delete res;
775 delete orig;
776 curve->unref();
777 return ret_pathv;
778 }
781 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
782 ret_pathv = orig->MakePathVector();
784 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
785 SPShape *shape = SP_SHAPE(item);
787 Geom::PathVector const & pathv = curve->get_pathvector();
789 // START marker
790 for (int i = 0; i < 2; i++) { // SP_MARKER_LOC and SP_MARKER_LOC_START
791 if ( SPObject *marker_obj = shape->marker[i] ) {
792 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
793 item_outline_add_marker( marker_obj, m,
794 Geom::Scale(i_style->stroke_width.computed),
795 ret_pathv );
796 }
797 }
798 // MID marker
799 for (int i = 0; i < 3; i += 2) { // SP_MARKER_LOC and SP_MARKER_LOC_MID
800 SPObject *midmarker_obj = shape->marker[i];
801 if (!midmarker_obj) continue;
802 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
803 // START position
804 if ( path_it != pathv.begin()
805 && ! ((path_it == (pathv.end()-1)) && (path_it->size_default() == 0)) ) // if this is the last path and it is a moveto-only, there is no mid marker there
806 {
807 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
808 item_outline_add_marker( midmarker_obj, m,
809 Geom::Scale(i_style->stroke_width.computed),
810 ret_pathv );
811 }
812 // MID position
813 if (path_it->size_default() > 1) {
814 Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve
815 Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve
816 while (curve_it2 != path_it->end_default())
817 {
818 /* Put marker between curve_it1 and curve_it2.
819 * Loop to end_default (so including closing segment), because when a path is closed,
820 * there should be a midpoint marker between last segment and closing straight line segment
821 */
822 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
823 item_outline_add_marker( midmarker_obj, m,
824 Geom::Scale(i_style->stroke_width.computed),
825 ret_pathv);
827 ++curve_it1;
828 ++curve_it2;
829 }
830 }
831 // END position
832 if ( path_it != (pathv.end()-1) && !path_it->empty()) {
833 Geom::Curve const &lastcurve = path_it->back_default();
834 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
835 item_outline_add_marker( midmarker_obj, m,
836 Geom::Scale(i_style->stroke_width.computed),
837 ret_pathv );
838 }
839 }
840 }
841 // END marker
842 for (int i = 0; i < 4; i += 3) { // SP_MARKER_LOC and SP_MARKER_LOC_END
843 if ( SPObject *marker_obj = shape->marker[i] ) {
844 /* Get reference to last curve in the path.
845 * For moveto-only path, this returns the "closing line segment". */
846 Geom::Path const &path_last = pathv.back();
847 unsigned int index = path_last.size_default();
848 if (index > 0) {
849 index--;
850 }
851 Geom::Curve const &lastcurve = path_last[index];
853 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
854 item_outline_add_marker( marker_obj, m,
855 Geom::Scale(i_style->stroke_width.computed),
856 ret_pathv );
857 }
858 }
859 }
861 curve->unref();
862 }
864 delete res;
865 delete orig;
867 return ret_pathv;
868 }
870 void
871 sp_selected_path_outline(SPDesktop *desktop)
872 {
873 Inkscape::Selection *selection = sp_desktop_selection(desktop);
875 if (selection->isEmpty()) {
876 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
877 return;
878 }
880 bool did = false;
882 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
883 items != NULL;
884 items = items->next) {
886 SPItem *item = (SPItem *) items->data;
888 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
889 continue;
891 SPCurve *curve = NULL;
892 if (SP_IS_SHAPE(item)) {
893 curve = sp_shape_get_curve(SP_SHAPE(item));
894 if (curve == NULL)
895 continue;
896 }
897 if (SP_IS_TEXT(item)) {
898 curve = SP_TEXT(item)->getNormalizedBpath();
899 if (curve == NULL)
900 continue;
901 }
903 // pas de stroke pas de chocolat
904 if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
905 curve->unref();
906 continue;
907 }
909 // remember old stroke style, to be set on fill
910 SPStyle *i_style = SP_OBJECT_STYLE(item);
911 SPCSSAttr *ncss;
912 {
913 ncss = sp_css_attr_from_style(i_style, SP_STYLE_FLAG_ALWAYS);
914 gchar const *s_val = sp_repr_css_property(ncss, "stroke", NULL);
915 gchar const *s_opac = sp_repr_css_property(ncss, "stroke-opacity", NULL);
917 sp_repr_css_set_property(ncss, "stroke", "none");
918 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
919 sp_repr_css_set_property(ncss, "fill", s_val);
920 if ( s_opac ) {
921 sp_repr_css_set_property(ncss, "fill-opacity", s_opac);
922 } else {
923 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
924 }
925 sp_repr_css_unset_property(ncss, "marker-start");
926 sp_repr_css_unset_property(ncss, "marker-mid");
927 sp_repr_css_unset_property(ncss, "marker-end");
928 }
930 Geom::Matrix const transform(item->transform);
931 float const scale = transform.descrim();
932 gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
933 gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
935 float o_width, o_miter;
936 JoinType o_join;
937 ButtType o_butt;
939 {
940 int jointype, captype;
942 jointype = i_style->stroke_linejoin.computed;
943 captype = i_style->stroke_linecap.computed;
944 o_width = i_style->stroke_width.computed;
946 switch (jointype) {
947 case SP_STROKE_LINEJOIN_MITER:
948 o_join = join_pointy;
949 break;
950 case SP_STROKE_LINEJOIN_ROUND:
951 o_join = join_round;
952 break;
953 default:
954 o_join = join_straight;
955 break;
956 }
958 switch (captype) {
959 case SP_STROKE_LINECAP_SQUARE:
960 o_butt = butt_square;
961 break;
962 case SP_STROKE_LINECAP_ROUND:
963 o_butt = butt_round;
964 break;
965 default:
966 o_butt = butt_straight;
967 break;
968 }
970 if (o_width < 0.1)
971 o_width = 0.1;
972 o_miter = i_style->stroke_miterlimit.value * o_width;
973 }
975 SPCurve *curvetemp = curve_for_item(item);
976 if (curvetemp == NULL) {
977 curve->unref();
978 continue;
979 }
980 // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
981 Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curvetemp->get_pathvector() );
982 curvetemp->unref();
984 Path *orig = new Path;
985 orig->LoadPathVector(pathv);
987 Path *res = new Path;
988 res->SetBackData(false);
990 if (i_style->stroke_dash.n_dash) {
991 // For dashed strokes, use Stroke method, because Outline can't do dashes
992 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
994 orig->ConvertWithBackData(0.1);
996 orig->DashPolylineFromStyle(i_style, scale, 0);
998 Shape* theShape = new Shape;
999 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
1000 0.5 * o_miter);
1001 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1003 Shape *theRes = new Shape;
1005 theRes->ConvertToShape(theShape, fill_positive);
1007 Path *originaux[1];
1008 originaux[0] = res;
1009 theRes->ConvertToForme(orig, 1, originaux);
1011 res->Coalesce(5.0);
1013 delete theShape;
1014 delete theRes;
1016 } else {
1018 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1020 orig->Coalesce(0.5 * o_width);
1022 Shape *theShape = new Shape;
1023 Shape *theRes = new Shape;
1025 res->ConvertWithBackData(1.0);
1026 res->Fill(theShape, 0);
1027 theRes->ConvertToShape(theShape, fill_positive);
1029 Path *originaux[1];
1030 originaux[0] = res;
1031 theRes->ConvertToForme(orig, 1, originaux);
1033 delete theShape;
1034 delete theRes;
1035 }
1037 if (orig->descr_cmd.size() <= 1) {
1038 // ca a merd\8e, ou bien le resultat est vide
1039 delete res;
1040 delete orig;
1041 continue;
1042 }
1044 did = true;
1046 // remember the position of the item
1047 gint pos = SP_OBJECT_REPR(item)->position();
1048 // remember parent
1049 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1050 // remember id
1051 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1052 // remember title
1053 gchar *title = item->title();
1054 // remember description
1055 gchar *desc = item->desc();
1057 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1059 SPDocument * doc = sp_desktop_document(desktop);
1060 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
1061 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1063 // restore old style, but set old stroke style on fill
1064 sp_repr_css_change(repr, ncss, "style");
1066 sp_repr_css_attr_unref(ncss);
1068 gchar *str = orig->svg_dump_path();
1069 repr->setAttribute("d", str);
1070 g_free(str);
1072 if (mask)
1073 repr->setAttribute("mask", mask);
1074 if (clip_path)
1075 repr->setAttribute("clip-path", clip_path);
1077 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
1079 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
1080 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
1082 // add the group to the parent
1083 parent->appendChild(g_repr);
1084 // move to the saved position
1085 g_repr->setPosition(pos > 0 ? pos : 0);
1087 g_repr->appendChild(repr);
1088 // restore title, description, id, transform
1089 repr->setAttribute("id", id);
1090 SPItem *newitem = (SPItem *) doc->getObjectByRepr(repr);
1091 sp_item_write_transform(newitem, repr, transform);
1092 if (title) {
1093 newitem->setTitle(title);
1094 }
1095 if (desc) {
1096 newitem->setDesc(desc);
1097 }
1099 SPShape *shape = SP_SHAPE(item);
1101 Geom::PathVector const & pathv = curve->get_pathvector();
1103 // START marker
1104 for (int i = 0; i < 2; i++) { // SP_MARKER_LOC and SP_MARKER_LOC_START
1105 if ( SPObject *marker_obj = shape->marker[i] ) {
1106 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
1107 sp_selected_path_outline_add_marker( marker_obj, m,
1108 Geom::Scale(i_style->stroke_width.computed), transform,
1109 g_repr, xml_doc, doc );
1110 }
1111 }
1112 // MID marker
1113 for (int i = 0; i < 3; i += 2) { // SP_MARKER_LOC and SP_MARKER_LOC_MID
1114 SPObject *midmarker_obj = shape->marker[i];
1115 if (!midmarker_obj) continue;
1116 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
1117 // START position
1118 if ( path_it != pathv.begin()
1119 && ! ((path_it == (pathv.end()-1)) && (path_it->size_default() == 0)) ) // if this is the last path and it is a moveto-only, there is no mid marker there
1120 {
1121 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
1122 sp_selected_path_outline_add_marker( midmarker_obj, m,
1123 Geom::Scale(i_style->stroke_width.computed), transform,
1124 g_repr, xml_doc, doc );
1125 }
1126 // MID position
1127 if (path_it->size_default() > 1) {
1128 Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve
1129 Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve
1130 while (curve_it2 != path_it->end_default())
1131 {
1132 /* Put marker between curve_it1 and curve_it2.
1133 * Loop to end_default (so including closing segment), because when a path is closed,
1134 * there should be a midpoint marker between last segment and closing straight line segment
1135 */
1136 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
1137 sp_selected_path_outline_add_marker(midmarker_obj, m,
1138 Geom::Scale(i_style->stroke_width.computed), transform,
1139 g_repr, xml_doc, doc);
1141 ++curve_it1;
1142 ++curve_it2;
1143 }
1144 }
1145 // END position
1146 if ( path_it != (pathv.end()-1) && !path_it->empty()) {
1147 Geom::Curve const &lastcurve = path_it->back_default();
1148 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1149 sp_selected_path_outline_add_marker( midmarker_obj, m,
1150 Geom::Scale(i_style->stroke_width.computed), transform,
1151 g_repr, xml_doc, doc );
1152 }
1153 }
1154 }
1155 // END marker
1156 for (int i = 0; i < 4; i += 3) { // SP_MARKER_LOC and SP_MARKER_LOC_END
1157 if ( SPObject *marker_obj = shape->marker[i] ) {
1158 /* Get reference to last curve in the path.
1159 * For moveto-only path, this returns the "closing line segment". */
1160 Geom::Path const &path_last = pathv.back();
1161 unsigned int index = path_last.size_default();
1162 if (index > 0) {
1163 index--;
1164 }
1165 Geom::Curve const &lastcurve = path_last[index];
1167 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1168 sp_selected_path_outline_add_marker( marker_obj, m,
1169 Geom::Scale(i_style->stroke_width.computed), transform,
1170 g_repr, xml_doc, doc );
1171 }
1172 }
1174 selection->add(g_repr);
1176 Inkscape::GC::release(g_repr);
1179 } else {
1181 // add the new repr to the parent
1182 parent->appendChild(repr);
1184 // move to the saved position
1185 repr->setPosition(pos > 0 ? pos : 0);
1187 // restore title, description, id, transform
1188 repr->setAttribute("id", id);
1190 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1191 sp_item_write_transform(newitem, repr, transform);
1192 if (title) {
1193 newitem->setTitle(title);
1194 }
1195 if (desc) {
1196 newitem->setDesc(desc);
1197 }
1199 selection->add(repr);
1201 }
1203 Inkscape::GC::release(repr);
1205 curve->unref();
1206 selection->remove(item);
1207 SP_OBJECT(item)->deleteObject(false);
1209 }
1210 if (title) g_free(title);
1211 if (desc) g_free(desc);
1213 delete res;
1214 delete orig;
1215 }
1217 if (did) {
1218 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
1219 _("Convert stroke to path"));
1220 } else {
1221 // TRANSLATORS: "to outline" means "to convert stroke to path"
1222 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
1223 return;
1224 }
1225 }
1228 void
1229 sp_selected_path_offset(SPDesktop *desktop)
1230 {
1231 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1232 double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1234 sp_selected_path_do_offset(desktop, true, prefOffset);
1235 }
1236 void
1237 sp_selected_path_inset(SPDesktop *desktop)
1238 {
1239 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1240 double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1242 sp_selected_path_do_offset(desktop, false, prefOffset);
1243 }
1245 void
1246 sp_selected_path_offset_screen(SPDesktop *desktop, double pixels)
1247 {
1248 sp_selected_path_do_offset(desktop, true, pixels / desktop->current_zoom());
1249 }
1251 void
1252 sp_selected_path_inset_screen(SPDesktop *desktop, double pixels)
1253 {
1254 sp_selected_path_do_offset(desktop, false, pixels / desktop->current_zoom());
1255 }
1258 void sp_selected_path_create_offset_object_zero(SPDesktop *desktop)
1259 {
1260 sp_selected_path_create_offset_object(desktop, 0, false);
1261 }
1263 void sp_selected_path_create_offset(SPDesktop *desktop)
1264 {
1265 sp_selected_path_create_offset_object(desktop, 1, false);
1266 }
1267 void sp_selected_path_create_inset(SPDesktop *desktop)
1268 {
1269 sp_selected_path_create_offset_object(desktop, -1, false);
1270 }
1272 void sp_selected_path_create_updating_offset_object_zero(SPDesktop *desktop)
1273 {
1274 sp_selected_path_create_offset_object(desktop, 0, true);
1275 }
1277 void sp_selected_path_create_updating_offset(SPDesktop *desktop)
1278 {
1279 sp_selected_path_create_offset_object(desktop, 1, true);
1280 }
1281 void sp_selected_path_create_updating_inset(SPDesktop *desktop)
1282 {
1283 sp_selected_path_create_offset_object(desktop, -1, true);
1284 }
1286 void
1287 sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating)
1288 {
1289 Inkscape::Selection *selection;
1290 Inkscape::XML::Node *repr;
1291 SPItem *item;
1292 SPCurve *curve;
1293 gchar *style, *str;
1294 float o_width, o_miter;
1295 JoinType o_join;
1296 ButtType o_butt;
1298 curve = NULL;
1300 selection = sp_desktop_selection(desktop);
1302 item = selection->singleItem();
1304 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
1305 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
1306 return;
1307 }
1308 if (SP_IS_SHAPE(item))
1309 {
1310 curve = sp_shape_get_curve(SP_SHAPE(item));
1311 if (curve == NULL)
1312 return;
1313 }
1314 if (SP_IS_TEXT(item))
1315 {
1316 curve = SP_TEXT(item)->getNormalizedBpath();
1317 if (curve == NULL)
1318 return;
1319 }
1321 Geom::Matrix const transform(item->transform);
1323 sp_item_write_transform(item, SP_OBJECT_REPR(item), Geom::identity());
1325 style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
1327 // remember the position of the item
1328 gint pos = SP_OBJECT_REPR(item)->position();
1329 // remember parent
1330 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1332 {
1333 SPStyle *i_style = SP_OBJECT(item)->style;
1334 int jointype, captype;
1336 jointype = i_style->stroke_linejoin.value;
1337 captype = i_style->stroke_linecap.value;
1338 o_width = i_style->stroke_width.computed;
1339 if (jointype == SP_STROKE_LINEJOIN_MITER)
1340 {
1341 o_join = join_pointy;
1342 }
1343 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1344 {
1345 o_join = join_round;
1346 }
1347 else
1348 {
1349 o_join = join_straight;
1350 }
1351 if (captype == SP_STROKE_LINECAP_SQUARE)
1352 {
1353 o_butt = butt_square;
1354 }
1355 else if (captype == SP_STROKE_LINECAP_ROUND)
1356 {
1357 o_butt = butt_round;
1358 }
1359 else
1360 {
1361 o_butt = butt_straight;
1362 }
1364 {
1365 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1366 o_width = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1367 }
1369 if (o_width < 0.01)
1370 o_width = 0.01;
1371 o_miter = i_style->stroke_miterlimit.value * o_width;
1372 }
1374 Path *orig = Path_for_item(item, true, false);
1375 if (orig == NULL)
1376 {
1377 g_free(style);
1378 curve->unref();
1379 return;
1380 }
1382 Path *res = new Path;
1383 res->SetBackData(false);
1385 {
1386 Shape *theShape = new Shape;
1387 Shape *theRes = new Shape;
1389 orig->ConvertWithBackData(1.0);
1390 orig->Fill(theShape, 0);
1392 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1393 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1394 if (val && strcmp(val, "nonzero") == 0)
1395 {
1396 theRes->ConvertToShape(theShape, fill_nonZero);
1397 }
1398 else if (val && strcmp(val, "evenodd") == 0)
1399 {
1400 theRes->ConvertToShape(theShape, fill_oddEven);
1401 }
1402 else
1403 {
1404 theRes->ConvertToShape(theShape, fill_nonZero);
1405 }
1407 Path *originaux[1];
1408 originaux[0] = orig;
1409 theRes->ConvertToForme(res, 1, originaux);
1411 delete theShape;
1412 delete theRes;
1413 }
1415 curve->unref();
1417 if (res->descr_cmd.size() <= 1)
1418 {
1419 // pas vraiment de points sur le resultat
1420 // donc il ne reste rien
1421 sp_document_done(sp_desktop_document(desktop),
1422 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1423 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1424 (updating ? _("Create linked offset")
1425 : _("Create dynamic offset")));
1426 selection->clear();
1428 delete res;
1429 delete orig;
1430 g_free(style);
1431 return;
1432 }
1434 {
1435 gchar tstr[80];
1437 tstr[79] = '\0';
1439 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1440 repr = xml_doc->createElement("svg:path");
1441 repr->setAttribute("sodipodi:type", "inkscape:offset");
1442 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1443 ? o_width
1444 : expand < 0
1445 ? -o_width
1446 : 0 ));
1448 str = res->svg_dump_path();
1449 repr->setAttribute("inkscape:original", str);
1450 g_free(str);
1452 if ( updating ) {
1453 char const *id = SP_OBJECT(item)->repr->attribute("id");
1454 char const *uri = g_strdup_printf("#%s", id);
1455 repr->setAttribute("xlink:href", uri);
1456 g_free((void *) uri);
1457 } else {
1458 repr->setAttribute("inkscape:href", NULL);
1459 }
1461 repr->setAttribute("style", style);
1463 // add the new repr to the parent
1464 parent->appendChild(repr);
1466 // move to the saved position
1467 repr->setPosition(pos > 0 ? pos : 0);
1469 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1471 if ( updating ) {
1472 // on conserve l'original
1473 // we reapply the transform to the original (offset will feel it)
1474 sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1475 } else {
1476 // delete original, apply the transform to the offset
1477 SP_OBJECT(item)->deleteObject(false);
1478 sp_item_write_transform(nitem, repr, transform);
1479 }
1481 // The object just created from a temporary repr is only a seed.
1482 // We need to invoke its write which will update its real repr (in particular adding d=)
1483 SP_OBJECT(nitem)->updateRepr();
1485 Inkscape::GC::release(repr);
1487 selection->set(nitem);
1488 }
1490 sp_document_done(sp_desktop_document(desktop),
1491 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1492 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1493 (updating ? _("Create linked offset")
1494 : _("Create dynamic offset")));
1496 delete res;
1497 delete orig;
1499 g_free(style);
1500 }
1513 void
1514 sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset)
1515 {
1516 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1518 if (selection->isEmpty()) {
1519 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1520 return;
1521 }
1523 bool did = false;
1525 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1526 items != NULL;
1527 items = items->next) {
1529 SPItem *item = (SPItem *) items->data;
1531 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1532 continue;
1534 SPCurve *curve = NULL;
1535 if (SP_IS_SHAPE(item)) {
1536 curve = sp_shape_get_curve(SP_SHAPE(item));
1537 if (curve == NULL)
1538 continue;
1539 }
1540 if (SP_IS_TEXT(item)) {
1541 curve = SP_TEXT(item)->getNormalizedBpath();
1542 if (curve == NULL)
1543 continue;
1544 }
1546 Geom::Matrix const transform(item->transform);
1548 sp_item_write_transform(item, SP_OBJECT_REPR(item), Geom::identity());
1550 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1552 float o_width, o_miter;
1553 JoinType o_join;
1554 ButtType o_butt;
1556 {
1557 SPStyle *i_style = SP_OBJECT(item)->style;
1558 int jointype, captype;
1560 jointype = i_style->stroke_linejoin.value;
1561 captype = i_style->stroke_linecap.value;
1562 o_width = i_style->stroke_width.computed;
1564 switch (jointype) {
1565 case SP_STROKE_LINEJOIN_MITER:
1566 o_join = join_pointy;
1567 break;
1568 case SP_STROKE_LINEJOIN_ROUND:
1569 o_join = join_round;
1570 break;
1571 default:
1572 o_join = join_straight;
1573 break;
1574 }
1576 switch (captype) {
1577 case SP_STROKE_LINECAP_SQUARE:
1578 o_butt = butt_square;
1579 break;
1580 case SP_STROKE_LINECAP_ROUND:
1581 o_butt = butt_round;
1582 break;
1583 default:
1584 o_butt = butt_straight;
1585 break;
1586 }
1588 o_width = prefOffset;
1590 if (o_width < 0.1)
1591 o_width = 0.1;
1592 o_miter = i_style->stroke_miterlimit.value * o_width;
1593 }
1595 Path *orig = Path_for_item(item, false);
1596 if (orig == NULL) {
1597 g_free(style);
1598 curve->unref();
1599 continue;
1600 }
1602 Path *res = new Path;
1603 res->SetBackData(false);
1605 {
1606 Shape *theShape = new Shape;
1607 Shape *theRes = new Shape;
1609 orig->ConvertWithBackData(0.03);
1610 orig->Fill(theShape, 0);
1612 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1613 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1614 if (val && strcmp(val, "nonzero") == 0)
1615 {
1616 theRes->ConvertToShape(theShape, fill_nonZero);
1617 }
1618 else if (val && strcmp(val, "evenodd") == 0)
1619 {
1620 theRes->ConvertToShape(theShape, fill_oddEven);
1621 }
1622 else
1623 {
1624 theRes->ConvertToShape(theShape, fill_nonZero);
1625 }
1627 // et maintenant: offset
1628 // methode inexacte
1629 /* Path *originaux[1];
1630 originaux[0] = orig;
1631 theRes->ConvertToForme(res, 1, originaux);
1633 if (expand) {
1634 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1635 } else {
1636 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1637 }
1639 orig->ConvertWithBackData(1.0);
1640 orig->Fill(theShape, 0);
1641 theRes->ConvertToShape(theShape, fill_positive);
1642 originaux[0] = orig;
1643 theRes->ConvertToForme(res, 1, originaux);
1645 if (o_width >= 0.5) {
1646 // res->Coalesce(1.0);
1647 res->ConvertEvenLines(1.0);
1648 res->Simplify(1.0);
1649 } else {
1650 // res->Coalesce(o_width);
1651 res->ConvertEvenLines(1.0*o_width);
1652 res->Simplify(1.0 * o_width);
1653 } */
1654 // methode par makeoffset
1656 if (expand)
1657 {
1658 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1659 }
1660 else
1661 {
1662 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1663 }
1664 theRes->ConvertToShape(theShape, fill_positive);
1666 res->Reset();
1667 theRes->ConvertToForme(res);
1669 if (o_width >= 1.0)
1670 {
1671 res->ConvertEvenLines(1.0);
1672 res->Simplify(1.0);
1673 }
1674 else
1675 {
1676 res->ConvertEvenLines(1.0*o_width);
1677 res->Simplify(1.0 * o_width);
1678 }
1680 delete theShape;
1681 delete theRes;
1682 }
1684 did = true;
1686 curve->unref();
1687 // remember the position of the item
1688 gint pos = SP_OBJECT_REPR(item)->position();
1689 // remember parent
1690 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1691 // remember id
1692 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1694 selection->remove(item);
1695 SP_OBJECT(item)->deleteObject(false);
1697 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1699 gchar tstr[80];
1701 tstr[79] = '\0';
1703 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1704 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1706 repr->setAttribute("style", style);
1708 gchar *str = res->svg_dump_path();
1709 repr->setAttribute("d", str);
1710 g_free(str);
1712 // add the new repr to the parent
1713 parent->appendChild(repr);
1715 // move to the saved position
1716 repr->setPosition(pos > 0 ? pos : 0);
1718 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1720 // reapply the transform
1721 sp_item_write_transform(newitem, repr, transform);
1723 repr->setAttribute("id", id);
1725 selection->add(repr);
1727 Inkscape::GC::release(repr);
1728 }
1730 delete orig;
1731 delete res;
1732 }
1734 if (did) {
1735 sp_document_done(sp_desktop_document(desktop),
1736 (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1737 (expand ? _("Outset path") : _("Inset path")));
1738 } else {
1739 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1740 return;
1741 }
1742 }
1745 static bool
1746 sp_selected_path_simplify_items(SPDesktop *desktop,
1747 Inkscape::Selection *selection, GSList *items,
1748 float threshold, bool justCoalesce,
1749 float angleLimit, bool breakableAngles,
1750 bool modifySelection);
1753 //return true if we changed something, else false
1754 bool
1755 sp_selected_path_simplify_item(SPDesktop *desktop,
1756 Inkscape::Selection *selection, SPItem *item,
1757 float threshold, bool justCoalesce,
1758 float angleLimit, bool breakableAngles,
1759 gdouble size, bool modifySelection)
1760 {
1761 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1762 return false;
1764 //If this is a group, do the children instead
1765 if (SP_IS_GROUP(item)) {
1766 GSList *items = sp_item_group_item_list(SP_GROUP(item));
1768 return sp_selected_path_simplify_items(desktop, selection, items,
1769 threshold, justCoalesce,
1770 angleLimit, breakableAngles,
1771 false);
1772 }
1775 SPCurve *curve = NULL;
1777 if (SP_IS_SHAPE(item)) {
1778 curve = sp_shape_get_curve(SP_SHAPE(item));
1779 if (!curve)
1780 return false;
1781 }
1783 if (SP_IS_TEXT(item)) {
1784 curve = SP_TEXT(item)->getNormalizedBpath();
1785 if (!curve)
1786 return false;
1787 }
1789 // correct virtual size by full transform (bug #166937)
1790 size /= sp_item_i2doc_affine(item).descrim();
1792 // save the transform, to re-apply it after simplification
1793 Geom::Matrix const transform(item->transform);
1795 /*
1796 reset the transform, effectively transforming the item by transform.inverse();
1797 this is necessary so that the item is transformed twice back and forth,
1798 allowing all compensations to cancel out regardless of the preferences
1799 */
1800 sp_item_write_transform(item, SP_OBJECT_REPR(item), Geom::identity());
1802 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1803 gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1804 gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1806 Path *orig = Path_for_item(item, false);
1807 if (orig == NULL) {
1808 g_free(style);
1809 curve->unref();
1810 return false;
1811 }
1813 curve->unref();
1814 // remember the position of the item
1815 gint pos = SP_OBJECT_REPR(item)->position();
1816 // remember parent
1817 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1818 // remember id
1819 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1820 // remember path effect
1821 char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1822 // remember title
1823 gchar *title = item->title();
1824 // remember description
1825 gchar *desc = item->desc();
1827 //If a group was selected, to not change the selection list
1828 if (modifySelection)
1829 selection->remove(item);
1831 SP_OBJECT(item)->deleteObject(false);
1833 if ( justCoalesce ) {
1834 orig->Coalesce(threshold * size);
1835 } else {
1836 orig->ConvertEvenLines(threshold * size);
1837 orig->Simplify(threshold * size);
1838 }
1840 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1841 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1843 // restore style, mask and clip-path
1844 repr->setAttribute("style", style);
1845 g_free(style);
1847 if ( mask ) {
1848 repr->setAttribute("mask", mask);
1849 g_free(mask);
1850 }
1852 if ( clip_path ) {
1853 repr->setAttribute("clip-path", clip_path);
1854 g_free(clip_path);
1855 }
1857 // restore path effect
1858 repr->setAttribute("inkscape:path-effect", patheffect);
1860 // path
1861 gchar *str = orig->svg_dump_path();
1862 if (patheffect)
1863 repr->setAttribute("inkscape:original-d", str);
1864 else
1865 repr->setAttribute("d", str);
1866 g_free(str);
1868 // restore id
1869 repr->setAttribute("id", id);
1871 // add the new repr to the parent
1872 parent->appendChild(repr);
1874 // move to the saved position
1875 repr->setPosition(pos > 0 ? pos : 0);
1877 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1879 // reapply the transform
1880 sp_item_write_transform(newitem, repr, transform);
1882 // restore title & description
1883 if (title) {
1884 newitem->setTitle(title);
1885 g_free(title);
1886 }
1887 if (desc) {
1888 newitem->setDesc(desc);
1889 g_free(desc);
1890 }
1892 //If we are not in a selected group
1893 if (modifySelection)
1894 selection->add(repr);
1896 Inkscape::GC::release(repr);
1898 // clean up
1899 if (orig) delete orig;
1901 return true;
1902 }
1905 bool
1906 sp_selected_path_simplify_items(SPDesktop *desktop,
1907 Inkscape::Selection *selection, GSList *items,
1908 float threshold, bool justCoalesce,
1909 float angleLimit, bool breakableAngles,
1910 bool modifySelection)
1911 {
1912 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1913 bool simplifyIndividualPaths = prefs->getBool("/options/simplifyindividualpaths/value");
1915 gchar *simplificationType;
1916 if (simplifyIndividualPaths) {
1917 simplificationType = _("Simplifying paths (separately):");
1918 } else {
1919 simplificationType = _("Simplifying paths:");
1920 }
1922 bool didSomething = false;
1924 Geom::OptRect selectionBbox = selection->bounds();
1925 if (!selectionBbox) {
1926 return false;
1927 }
1928 gdouble selectionSize = L2(selectionBbox->dimensions());
1930 gdouble simplifySize = selectionSize;
1932 int pathsSimplified = 0;
1933 int totalPathCount = g_slist_length(items);
1935 // set "busy" cursor
1936 desktop->setWaitingCursor();
1938 for (; items != NULL; items = items->next) {
1939 SPItem *item = (SPItem *) items->data;
1941 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1942 continue;
1944 if (simplifyIndividualPaths) {
1945 Geom::OptRect itemBbox = item->getBounds(sp_item_i2d_affine(item));
1946 if (itemBbox) {
1947 simplifySize = L2(itemBbox->dimensions());
1948 } else {
1949 simplifySize = 0;
1950 }
1951 }
1953 pathsSimplified++;
1955 if (pathsSimplified % 20 == 0) {
1956 gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."),
1957 simplificationType, pathsSimplified, totalPathCount);
1958 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1959 }
1961 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1962 threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1963 }
1965 desktop->clearWaitingCursor();
1967 if (pathsSimplified > 20) {
1968 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1969 }
1971 return didSomething;
1972 }
1974 void
1975 sp_selected_path_simplify_selection(SPDesktop *desktop, float threshold, bool justCoalesce,
1976 float angleLimit, bool breakableAngles)
1977 {
1978 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1980 if (selection->isEmpty()) {
1981 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1982 _("Select <b>path(s)</b> to simplify."));
1983 return;
1984 }
1986 GSList *items = g_slist_copy((GSList *) selection->itemList());
1988 bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1989 items, threshold,
1990 justCoalesce,
1991 angleLimit,
1992 breakableAngles, true);
1994 if (didSomething)
1995 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1996 _("Simplify"));
1997 else
1998 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
2000 }
2003 // globals for keeping track of accelerated simplify
2004 static double previousTime = 0.0;
2005 static gdouble simplifyMultiply = 1.0;
2007 void
2008 sp_selected_path_simplify(SPDesktop *desktop)
2009 {
2010 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
2011 gdouble simplifyThreshold =
2012 prefs->getDouble("/options/simplifythreshold/value", 0.003);
2013 bool simplifyJustCoalesce = prefs->getBool("/options/simplifyjustcoalesce/value", 0);
2015 //Get the current time
2016 GTimeVal currentTimeVal;
2017 g_get_current_time(¤tTimeVal);
2018 double currentTime = currentTimeVal.tv_sec * 1000000 +
2019 currentTimeVal.tv_usec;
2021 //Was the previous call to this function recent? (<0.5 sec)
2022 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
2024 // add to the threshold 1/2 of its original value
2025 simplifyMultiply += 0.5;
2026 simplifyThreshold *= simplifyMultiply;
2028 } else {
2029 // reset to the default
2030 simplifyMultiply = 1;
2031 }
2033 //remember time for next call
2034 previousTime = currentTime;
2036 //g_print("%g\n", simplify_threshold);
2038 //Make the actual call
2039 sp_selected_path_simplify_selection(desktop, simplifyThreshold,
2040 simplifyJustCoalesce, 0.0, false);
2041 }
2045 // fonctions utilitaires
2047 bool
2048 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
2049 {
2050 if (who == NULL || a == NULL)
2051 return false;
2052 if (who == a)
2053 return true;
2054 return Ancetre(sp_repr_parent(a), who);
2055 }
2057 Path *
2058 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
2059 {
2060 SPCurve *curve = curve_for_item(item);
2062 if (curve == NULL)
2063 return NULL;
2065 Geom::PathVector *pathv = pathvector_for_curve(item, curve, doTransformation, transformFull, Geom::identity(), Geom::identity());
2066 curve->unref();
2068 Path *dest = new Path;
2069 dest->LoadPathVector(*pathv);
2070 delete pathv;
2072 return dest;
2073 }
2075 /*
2076 * NOTE: Returns empty pathvector if curve == NULL
2077 * TODO: see if calling this method can be optimized. All the pathvector copying might be slow.
2078 */
2079 Geom::PathVector*
2080 pathvector_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull, Geom::Matrix extraPreAffine, Geom::Matrix extraPostAffine)
2081 {
2082 if (curve == NULL)
2083 return NULL;
2085 Geom::PathVector *dest = new Geom::PathVector;
2086 *dest = curve->get_pathvector(); // Make a copy; must be freed by the caller!
2088 if (doTransformation) {
2089 if (transformFull) {
2090 *dest *= extraPreAffine * sp_item_i2doc_affine(item) * extraPostAffine;
2091 } else {
2092 *dest *= extraPreAffine * (Geom::Matrix)item->transform * extraPostAffine;
2093 }
2094 } else {
2095 *dest *= extraPreAffine * extraPostAffine;
2096 }
2098 return dest;
2099 }
2101 SPCurve* curve_for_item(SPItem *item)
2102 {
2103 if (!item)
2104 return NULL;
2106 SPCurve *curve = NULL;
2107 if (SP_IS_SHAPE(item)) {
2108 if (SP_IS_PATH(item)) {
2109 curve = sp_path_get_curve_for_edit(SP_PATH(item));
2110 } else {
2111 curve = sp_shape_get_curve(SP_SHAPE(item));
2112 }
2113 }
2114 else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
2115 {
2116 curve = te_get_layout(item)->convertToCurves();
2117 }
2118 else if (SP_IS_IMAGE(item))
2119 {
2120 curve = sp_image_get_curve(SP_IMAGE(item));
2121 }
2123 return curve; // do not forget to unref the curve at some point!
2124 }
2126 boost::optional<Path::cut_position> get_nearest_position_on_Path(Path *path, Geom::Point p, unsigned seg)
2127 {
2128 //get nearest position on path
2129 Path::cut_position pos = path->PointToCurvilignPosition(p, seg);
2130 return pos;
2131 }
2133 Geom::Point get_point_on_Path(Path *path, int piece, double t)
2134 {
2135 Geom::Point p;
2136 path->PointAt(piece, t, p);
2137 return p;
2138 }
2141 /*
2142 Local Variables:
2143 mode:c++
2144 c-file-style:"stroustrup"
2145 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
2146 indent-tabs-mode:nil
2147 fill-column:99
2148 End:
2149 */
2150 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :