1 /*
2 * splivarot.cpp
3 * Inkscape
4 *
5 * Created by fred on Fri Dec 05 2003.
6 * tweaked endlessly by bulia byak <buliabyak@users.sf.net>
7 * public domain
8 *
9 */
11 /*
12 * contains lots of stitched pieces of path-chemistry.c
13 */
15 #ifdef HAVE_CONFIG_H
16 # include <config.h>
17 #endif
19 #include <cstring>
20 #include <string>
21 #include <vector>
22 #include <glib/gmem.h>
23 #include "xml/repr.h"
24 #include "svg/svg.h"
25 #include "sp-path.h"
26 #include "sp-shape.h"
27 #include "sp-image.h"
28 #include "marker.h"
29 #include "enums.h"
30 #include "sp-text.h"
31 #include "sp-flowtext.h"
32 #include "text-editing.h"
33 #include "sp-item-group.h"
34 #include "style.h"
35 #include "document.h"
36 #include "message-stack.h"
37 #include "selection.h"
38 #include "desktop-handles.h"
39 #include "desktop.h"
40 #include "display/canvas-bpath.h"
41 #include "display/curve.h"
42 #include <glibmm/i18n.h>
43 #include "preferences.h"
45 #include "xml/repr.h"
46 #include "xml/repr-sorting.h"
47 #include <2geom/pathvector.h>
48 #include <libnr/nr-scale-matrix-ops.h>
49 #include "helper/geom.h"
51 #include "livarot/Path.h"
52 #include "livarot/Shape.h"
54 #include "splivarot.h"
56 using Inkscape::DocumentUndo;
58 bool Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
60 void sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
61 void sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset);
62 void sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating);
64 void
65 sp_selected_path_union(SPDesktop *desktop)
66 {
67 sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
68 }
70 void
71 sp_selected_path_union_skip_undo(SPDesktop *desktop)
72 {
73 sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_NONE, _("Union"));
74 }
76 void
77 sp_selected_path_intersect(SPDesktop *desktop)
78 {
79 sp_selected_path_boolop(desktop, bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
80 }
82 void
83 sp_selected_path_diff(SPDesktop *desktop)
84 {
85 sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
86 }
88 void
89 sp_selected_path_diff_skip_undo(SPDesktop *desktop)
90 {
91 sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_NONE, _("Difference"));
92 }
94 void
95 sp_selected_path_symdiff(SPDesktop *desktop)
96 {
97 sp_selected_path_boolop(desktop, bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
98 }
99 void
100 sp_selected_path_cut(SPDesktop *desktop)
101 {
102 sp_selected_path_boolop(desktop, bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
103 }
104 void
105 sp_selected_path_slice(SPDesktop *desktop)
106 {
107 sp_selected_path_boolop(desktop, bool_op_slice, SP_VERB_SELECTION_SLICE, _("Cut path"));
108 }
111 // boolean operations
112 // take the source paths from the file, do the operation, delete the originals and add the results
113 void
114 sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb, const Glib::ustring description)
115 {
116 Inkscape::Selection *selection = sp_desktop_selection(desktop);
118 GSList *il = (GSList *) selection->itemList();
120 // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
121 if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
122 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
123 return;
124 }
125 else if ( g_slist_length(il) < 1 ) {
126 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
127 return;
128 }
130 if (g_slist_length(il) > 2) {
131 if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
132 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, division, or path cut."));
133 return;
134 }
135 }
137 // reverseOrderForOp marks whether the order of the list is the top->down order
138 // it's only used when there are 2 objects, and for operations who need to know the
139 // topmost object (differences, cuts)
140 bool reverseOrderForOp = false;
142 if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice) {
143 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
144 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
145 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
147 if (a == NULL || b == NULL) {
148 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."));
149 return;
150 }
152 if (Ancetre(a, b)) {
153 // a is the parent of b, already in the proper order
154 } else if (Ancetre(b, a)) {
155 // reverse order
156 reverseOrderForOp = true;
157 } else {
159 // objects are not in parent/child relationship;
160 // find their lowest common ancestor
161 Inkscape::XML::Node *dad = LCA(a, b);
162 if (dad == NULL) {
163 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."));
164 return;
165 }
167 // find the children of the LCA that lead from it to the a and b
168 Inkscape::XML::Node *as = AncetreFils(a, dad);
169 Inkscape::XML::Node *bs = AncetreFils(b, dad);
171 // find out which comes first
172 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
173 if (child == as) {
174 /* a first, so reverse. */
175 reverseOrderForOp = true;
176 break;
177 }
178 if (child == bs)
179 break;
180 }
181 }
182 }
184 il = g_slist_copy(il);
186 // first check if all the input objects have shapes
187 // otherwise bail out
188 for (GSList *l = il; l != NULL; l = l->next)
189 {
190 SPItem *item = SP_ITEM(l->data);
191 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
192 {
193 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
194 g_slist_free(il);
195 return;
196 }
197 }
199 // extract the livarot Paths from the source objects
200 // also get the winding rule specified in the style
201 int nbOriginaux = g_slist_length(il);
202 std::vector<Path *> originaux(nbOriginaux);
203 std::vector<FillRule> origWind(nbOriginaux);
204 int curOrig;
205 {
206 curOrig = 0;
207 for (GSList *l = il; l != NULL; l = l->next)
208 {
209 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
210 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
211 if (val && strcmp(val, "nonzero") == 0) {
212 origWind[curOrig]= fill_nonZero;
213 } else if (val && strcmp(val, "evenodd") == 0) {
214 origWind[curOrig]= fill_oddEven;
215 } else {
216 origWind[curOrig]= fill_nonZero;
217 }
219 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
220 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
221 {
222 for (int i = curOrig; i >= 0; i--) delete originaux[i];
223 g_slist_free(il);
224 return;
225 }
226 curOrig++;
227 }
228 }
229 // reverse if needed
230 // note that the selection list keeps its order
231 if ( reverseOrderForOp ) {
232 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
233 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
234 }
236 // and work
237 // some temporary instances, first
238 Shape *theShapeA = new Shape;
239 Shape *theShapeB = new Shape;
240 Shape *theShape = new Shape;
241 Path *res = new Path;
242 res->SetBackData(false);
243 Path::cut_position *toCut=NULL;
244 int nbToCut=0;
246 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
247 // true boolean op
248 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
249 originaux[0]->ConvertWithBackData(0.1);
251 originaux[0]->Fill(theShape, 0);
253 theShapeA->ConvertToShape(theShape, origWind[0]);
255 curOrig = 1;
256 for (GSList *l = il->next; l != NULL; l = l->next) {
257 originaux[curOrig]->ConvertWithBackData(0.1);
259 originaux[curOrig]->Fill(theShape, curOrig);
261 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
263 // les elements arrivent en ordre inverse dans la liste
264 theShape->Booleen(theShapeB, theShapeA, bop);
266 {
267 Shape *swap = theShape;
268 theShape = theShapeA;
269 theShapeA = swap;
270 }
271 curOrig++;
272 }
274 {
275 Shape *swap = theShape;
276 theShape = theShapeA;
277 theShapeA = swap;
278 }
280 } else if ( bop == bool_op_cut ) {
281 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
282 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
283 // it is just uncrossed, and cleaned from duplicate edges and points
284 // then it's fed to Booleen() which will uncross it against the other path
285 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
286 // thus making a polygon. the weight of the edges of the cut are all 0, but
287 // the Booleen need to invert the ones inside the source polygon (for the subsequent
288 // ConvertToForme)
290 // the cut path needs to have the highest pathID in the back data
291 // that's how the Booleen() function knows it's an edge of the cut
293 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
294 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
295 // left it at 1.0. Investigate replacing this by a combination of difference and
296 // intersection of the same two paths. -- bb
297 {
298 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
299 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
300 }
301 originaux[0]->ConvertWithBackData(1.0);
303 originaux[0]->Fill(theShape, 0);
305 theShapeA->ConvertToShape(theShape, origWind[0]);
307 originaux[1]->ConvertWithBackData(1.0);
309 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
311 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
313 // les elements arrivent en ordre inverse dans la liste
314 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
316 } else if ( bop == bool_op_slice ) {
317 // slice is not really a boolean operation
318 // you just put the 2 shapes in a single polygon, uncross it
319 // the points where the degree is > 2 are intersections
320 // just check it's an intersection on the path you want to cut, and keep it
321 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
322 // make new subpath at each one of these positions
323 // inversion pour l'op\8eration
324 {
325 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
326 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
327 }
328 originaux[0]->ConvertWithBackData(1.0);
330 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
332 originaux[1]->ConvertWithBackData(1.0);
334 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
336 theShape->ConvertToShape(theShapeA, fill_justDont);
338 if ( theShape->hasBackData() ) {
339 // should always be the case, but ya never know
340 {
341 for (int i = 0; i < theShape->numberOfPoints(); i++) {
342 if ( theShape->getPoint(i).totalDegree() > 2 ) {
343 // possibly an intersection
344 // we need to check that at least one edge from the source path is incident to it
345 // before we declare it's an intersection
346 int cb = theShape->getPoint(i).incidentEdge[FIRST];
347 int nbOrig=0;
348 int nbOther=0;
349 int piece=-1;
350 float t=0.0;
351 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
352 if ( theShape->ebData[cb].pathID == 0 ) {
353 // the source has an edge incident to the point, get its position on the path
354 piece=theShape->ebData[cb].pieceID;
355 if ( theShape->getEdge(cb).st == i ) {
356 t=theShape->ebData[cb].tSt;
357 } else {
358 t=theShape->ebData[cb].tEn;
359 }
360 nbOrig++;
361 }
362 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
363 cb=theShape->NextAt(i, cb);
364 }
365 if ( nbOrig > 0 && nbOther > 0 ) {
366 // point incident to both path and cut: an intersection
367 // note that you only keep one position on the source; you could have degenerate
368 // cases where the source crosses itself at this point, and you wouyld miss an intersection
369 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
370 toCut[nbToCut].piece=piece;
371 toCut[nbToCut].t=t;
372 nbToCut++;
373 }
374 }
375 }
376 }
377 {
378 // i think it's useless now
379 int i = theShape->numberOfEdges() - 1;
380 for (;i>=0;i--) {
381 if ( theShape->ebData[i].pathID == 1 ) {
382 theShape->SubEdge(i);
383 }
384 }
385 }
387 }
388 }
390 int* nesting=NULL;
391 int* conts=NULL;
392 int nbNest=0;
393 // pour compenser le swap juste avant
394 if ( bop == bool_op_slice ) {
395 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
396 // res->ConvertForcedToMoveTo();
397 res->Copy(originaux[0]);
398 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
399 free(toCut);
400 } else if ( bop == bool_op_cut ) {
401 // il faut appeler pour desallouer PointData (pas vital, mais bon)
402 // the Booleen() function did not deallocated the point_data array in theShape, because this
403 // function needs it.
404 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
405 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
406 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
407 } else {
408 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
409 }
411 delete theShape;
412 delete theShapeA;
413 delete theShapeB;
414 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
416 if (res->descr_cmd.size() <= 1)
417 {
418 // only one command, presumably a moveto: it isn't a path
419 for (GSList *l = il; l != NULL; l = l->next)
420 {
421 SP_OBJECT(l->data)->deleteObject();
422 }
423 DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE,
424 description);
425 selection->clear();
427 delete res;
428 g_slist_free(il);
429 return;
430 }
432 // get the source path object
433 SPObject *source;
434 if ( bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
435 if (reverseOrderForOp) {
436 source = SP_OBJECT(il->data);
437 } else {
438 source = SP_OBJECT(il->next->data);
439 }
440 } else {
441 // find out the bottom object
442 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
444 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
446 source = sp_desktop_document(desktop)->
447 getObjectByRepr((Inkscape::XML::Node *)sorted->data);
449 g_slist_free(sorted);
450 }
452 // adjust style properties that depend on a possible transform in the source object in order
453 // to get a correct style attribute for the new path
454 SPItem* item_source = SP_ITEM(source);
455 Geom::Matrix i2doc(item_source->i2doc_affine());
456 item_source->adjust_stroke(i2doc.descrim());
457 item_source->adjust_pattern(i2doc);
458 item_source->adjust_gradient(i2doc);
459 item_source->adjust_livepatheffect(i2doc);
461 Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
463 // remember important aspects of the source path, to be restored
464 gint pos = repr_source->position();
465 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
466 gchar const *id = repr_source->attribute("id");
467 gchar const *style = repr_source->attribute("style");
468 gchar const *mask = repr_source->attribute("mask");
469 gchar const *clip_path = repr_source->attribute("clip-path");
470 gchar *title = source->title();
471 gchar *desc = source->desc();
472 // remove source paths
473 selection->clear();
474 for (GSList *l = il; l != NULL; l = l->next) {
475 // if this is the bottommost object,
476 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
477 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
478 SP_OBJECT(l->data)->deleteObject(false);
479 } else {
480 // delete the object for real, so that its clones can take appropriate action
481 SP_OBJECT(l->data)->deleteObject();
482 }
483 }
484 g_slist_free(il);
486 // premultiply by the inverse of parent's repr
487 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
488 Geom::Matrix local (parent_item->i2doc_affine());
489 gchar *transform = sp_svg_transform_write(local.inverse());
491 // now that we have the result, add it on the canvas
492 if ( bop == bool_op_cut || bop == bool_op_slice ) {
493 int nbRP=0;
494 Path** resPath;
495 if ( bop == bool_op_slice ) {
496 // there are moveto's at each intersection, but it's still one unique path
497 // so break it down and add each subpath independently
498 // we could call break_apart to do this, but while we have the description...
499 resPath=res->SubPaths(nbRP, false);
500 } else {
501 // cut operation is a bit wicked: you need to keep holes
502 // that's why you needed the nesting
503 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
504 // to get the path for each part of the polygon. that's why you need the nesting info:
505 // to know in wich subpath to add a subpath
506 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
508 // cleaning
509 if ( conts ) free(conts);
510 if ( nesting ) free(nesting);
511 }
513 // add all the pieces resulting from cut or slice
514 for (int i=0;i<nbRP;i++) {
515 gchar *d = resPath[i]->svg_dump_path();
517 Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
518 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
519 repr->setAttribute("style", style);
520 if (mask)
521 repr->setAttribute("mask", mask);
522 if (clip_path)
523 repr->setAttribute("clip-path", clip_path);
525 repr->setAttribute("d", d);
526 g_free(d);
528 // for slice, remove fill
529 if (bop == bool_op_slice) {
530 SPCSSAttr *css;
532 css = sp_repr_css_attr_new();
533 sp_repr_css_set_property(css, "fill", "none");
535 sp_repr_css_change(repr, css, "style");
537 sp_repr_css_attr_unref(css);
538 }
540 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
541 // this means it's basically random which of the pieces inherits the original's id and clones
542 // a better algorithm might figure out e.g. the biggest piece
543 repr->setAttribute("id", id);
545 repr->setAttribute("transform", transform);
547 // add the new repr to the parent
548 parent->appendChild(repr);
550 // move to the saved position
551 repr->setPosition(pos > 0 ? pos : 0);
553 selection->add(repr);
554 Inkscape::GC::release(repr);
556 delete resPath[i];
557 }
558 if ( resPath ) free(resPath);
560 } else {
561 gchar *d = res->svg_dump_path();
563 Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
564 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
565 repr->setAttribute("style", style);
567 if ( mask )
568 repr->setAttribute("mask", mask);
570 if ( clip_path )
571 repr->setAttribute("clip-path", clip_path);
573 repr->setAttribute("d", d);
574 g_free(d);
576 repr->setAttribute("transform", transform);
578 repr->setAttribute("id", id);
579 parent->appendChild(repr);
580 if (title) {
581 sp_desktop_document(desktop)->getObjectByRepr(repr)->setTitle(title);
582 }
583 if (desc) {
584 sp_desktop_document(desktop)->getObjectByRepr(repr)->setDesc(desc);
585 }
586 repr->setPosition(pos > 0 ? pos : 0);
588 selection->add(repr);
589 Inkscape::GC::release(repr);
590 }
592 g_free(transform);
593 if (title) g_free(title);
594 if (desc) g_free(desc);
596 if (verb != SP_VERB_NONE) {
597 DocumentUndo::done(sp_desktop_document(desktop), verb, description);
598 }
600 delete res;
601 }
603 static
604 void sp_selected_path_outline_add_marker( SPObject *marker_object, Geom::Matrix marker_transform,
605 Geom::Scale stroke_scale, Geom::Matrix transform,
606 Inkscape::XML::Node *g_repr, Inkscape::XML::Document *xml_doc, SPDocument * doc )
607 {
608 SPMarker* marker = SP_MARKER (marker_object);
609 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (marker_object));
611 Geom::Matrix tr(marker_transform);
613 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
614 tr = stroke_scale * tr;
615 }
617 // total marker transform
618 tr = marker_item->transform * marker->c2p * tr * transform;
620 if (SP_OBJECT_REPR(marker_item)) {
621 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
622 g_repr->appendChild(m_repr);
623 SPItem *marker_item = (SPItem *) doc->getObjectByRepr(m_repr);
624 marker_item->doWriteTransform(m_repr, tr);
625 }
626 }
628 static
629 void item_outline_add_marker( SPObject const *marker_object, Geom::Matrix marker_transform,
630 Geom::Scale stroke_scale, Geom::PathVector* pathv_in )
631 {
632 SPMarker* marker = SP_MARKER (marker_object);
633 SPItem* marker_item = sp_item_first_item_child(SP_OBJECT(marker_object));
635 Geom::Matrix tr(marker_transform);
636 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
637 tr = stroke_scale * tr;
638 }
639 // total marker transform
640 tr = marker_item->transform * marker->c2p * tr;
642 Geom::PathVector* marker_pathv = item_outline(marker_item);
644 if (marker_pathv) {
645 for (unsigned int j=0; j < marker_pathv->size(); j++) {
646 pathv_in->push_back((*marker_pathv)[j] * tr);
647 }
648 delete marker_pathv;
649 }
650 }
652 /**
653 * Returns a pathvector that is the outline of the stroked item, with markers.
654 * item must be SPShape of SPText.
655 */
656 Geom::PathVector* item_outline(SPItem const *item)
657 {
658 Geom::PathVector *ret_pathv = NULL;
660 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
661 return ret_pathv;
663 // no stroke: no outline
664 if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
665 return ret_pathv;
666 }
668 SPCurve *curve = NULL;
669 if (SP_IS_SHAPE(item)) {
670 curve = SP_SHAPE(item)->getCurve();
671 } else if (SP_IS_TEXT(item)) {
672 curve = SP_TEXT(item)->getNormalizedBpath();
673 }
674 if (curve == NULL) {
675 return ret_pathv;
676 }
678 if (curve->get_pathvector().empty()) {
679 return ret_pathv;
680 }
682 // remember old stroke style, to be set on fill
683 SPStyle *i_style = SP_OBJECT_STYLE(item);
685 Geom::Matrix const transform(item->transform);
686 float const scale = transform.descrim();
688 float o_width, o_miter;
689 JoinType o_join;
690 ButtType o_butt;
691 {
692 o_width = i_style->stroke_width.computed;
693 if (o_width < 0.1) {
694 o_width = 0.1;
695 }
696 o_miter = i_style->stroke_miterlimit.value * o_width;
698 switch (i_style->stroke_linejoin.computed) {
699 case SP_STROKE_LINEJOIN_MITER:
700 o_join = join_pointy;
701 break;
702 case SP_STROKE_LINEJOIN_ROUND:
703 o_join = join_round;
704 break;
705 default:
706 o_join = join_straight;
707 break;
708 }
710 switch (i_style->stroke_linecap.computed) {
711 case SP_STROKE_LINECAP_SQUARE:
712 o_butt = butt_square;
713 break;
714 case SP_STROKE_LINECAP_ROUND:
715 o_butt = butt_round;
716 break;
717 default:
718 o_butt = butt_straight;
719 break;
720 }
721 }
723 // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
724 Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curve->get_pathvector() );
726 Path *orig = new Path;
727 orig->LoadPathVector(pathv);
729 Path *res = new Path;
730 res->SetBackData(false);
732 if (i_style->stroke_dash.n_dash) {
733 // For dashed strokes, use Stroke method, because Outline can't do dashes
734 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
736 orig->ConvertWithBackData(0.1);
738 orig->DashPolylineFromStyle(i_style, scale, 0);
740 Shape* theShape = new Shape;
741 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
742 0.5 * o_miter);
743 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
745 Shape *theRes = new Shape;
747 theRes->ConvertToShape(theShape, fill_positive);
749 Path *originaux[1];
750 originaux[0] = res;
751 theRes->ConvertToForme(orig, 1, originaux);
753 res->Coalesce(5.0);
755 delete theShape;
756 delete theRes;
757 } else {
758 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
760 orig->Coalesce(0.5 * o_width);
762 Shape *theShape = new Shape;
763 Shape *theRes = new Shape;
765 res->ConvertWithBackData(1.0);
766 res->Fill(theShape, 0);
767 theRes->ConvertToShape(theShape, fill_positive);
769 Path *originaux[1];
770 originaux[0] = res;
771 theRes->ConvertToForme(orig, 1, originaux);
773 delete theShape;
774 delete theRes;
775 }
777 if (orig->descr_cmd.size() <= 1) {
778 // ca a merd\8e, ou bien le resultat est vide
779 delete res;
780 delete orig;
781 curve->unref();
782 return ret_pathv;
783 }
786 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
787 ret_pathv = orig->MakePathVector();
789 if (SP_IS_SHAPE(item) && SP_SHAPE(item)->hasMarkers ()) {
790 SPShape *shape = SP_SHAPE(item);
792 Geom::PathVector const & pathv = curve->get_pathvector();
794 // START marker
795 for (int i = 0; i < 2; i++) { // SP_MARKER_LOC and SP_MARKER_LOC_START
796 if ( SPObject *marker_obj = shape->marker[i] ) {
797 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
798 item_outline_add_marker( marker_obj, m,
799 Geom::Scale(i_style->stroke_width.computed),
800 ret_pathv );
801 }
802 }
803 // MID marker
804 for (int i = 0; i < 3; i += 2) { // SP_MARKER_LOC and SP_MARKER_LOC_MID
805 SPObject *midmarker_obj = shape->marker[i];
806 if (!midmarker_obj) continue;
807 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
808 // START position
809 if ( path_it != pathv.begin()
810 && ! ((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
811 {
812 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
813 item_outline_add_marker( midmarker_obj, m,
814 Geom::Scale(i_style->stroke_width.computed),
815 ret_pathv );
816 }
817 // MID position
818 if (path_it->size_default() > 1) {
819 Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve
820 Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve
821 while (curve_it2 != path_it->end_default())
822 {
823 /* Put marker between curve_it1 and curve_it2.
824 * Loop to end_default (so including closing segment), because when a path is closed,
825 * there should be a midpoint marker between last segment and closing straight line segment
826 */
827 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
828 item_outline_add_marker( midmarker_obj, m,
829 Geom::Scale(i_style->stroke_width.computed),
830 ret_pathv);
832 ++curve_it1;
833 ++curve_it2;
834 }
835 }
836 // END position
837 if ( path_it != (pathv.end()-1) && !path_it->empty()) {
838 Geom::Curve const &lastcurve = path_it->back_default();
839 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
840 item_outline_add_marker( midmarker_obj, m,
841 Geom::Scale(i_style->stroke_width.computed),
842 ret_pathv );
843 }
844 }
845 }
846 // END marker
847 for (int i = 0; i < 4; i += 3) { // SP_MARKER_LOC and SP_MARKER_LOC_END
848 if ( SPObject *marker_obj = shape->marker[i] ) {
849 /* Get reference to last curve in the path.
850 * For moveto-only path, this returns the "closing line segment". */
851 Geom::Path const &path_last = pathv.back();
852 unsigned int index = path_last.size_default();
853 if (index > 0) {
854 index--;
855 }
856 Geom::Curve const &lastcurve = path_last[index];
858 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
859 item_outline_add_marker( marker_obj, m,
860 Geom::Scale(i_style->stroke_width.computed),
861 ret_pathv );
862 }
863 }
864 }
866 curve->unref();
867 }
869 delete res;
870 delete orig;
872 return ret_pathv;
873 }
875 void
876 sp_selected_path_outline(SPDesktop *desktop)
877 {
878 Inkscape::Selection *selection = sp_desktop_selection(desktop);
880 if (selection->isEmpty()) {
881 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
882 return;
883 }
885 bool did = false;
887 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
888 items != NULL;
889 items = items->next) {
891 SPItem *item = (SPItem *) items->data;
893 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
894 continue;
896 SPCurve *curve = NULL;
897 if (SP_IS_SHAPE(item)) {
898 curve = SP_SHAPE(item)->getCurve();
899 if (curve == NULL)
900 continue;
901 }
902 if (SP_IS_TEXT(item)) {
903 curve = SP_TEXT(item)->getNormalizedBpath();
904 if (curve == NULL)
905 continue;
906 }
908 if (curve->get_pathvector().empty()) {
909 continue;
910 }
912 // pas de stroke pas de chocolat
913 if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
914 curve->unref();
915 continue;
916 }
918 // remember old stroke style, to be set on fill
919 SPStyle *i_style = SP_OBJECT_STYLE(item);
920 SPCSSAttr *ncss;
921 {
922 ncss = sp_css_attr_from_style(i_style, SP_STYLE_FLAG_ALWAYS);
923 gchar const *s_val = sp_repr_css_property(ncss, "stroke", NULL);
924 gchar const *s_opac = sp_repr_css_property(ncss, "stroke-opacity", NULL);
926 sp_repr_css_set_property(ncss, "stroke", "none");
927 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
928 sp_repr_css_set_property(ncss, "fill", s_val);
929 if ( s_opac ) {
930 sp_repr_css_set_property(ncss, "fill-opacity", s_opac);
931 } else {
932 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
933 }
934 sp_repr_css_unset_property(ncss, "marker-start");
935 sp_repr_css_unset_property(ncss, "marker-mid");
936 sp_repr_css_unset_property(ncss, "marker-end");
937 }
939 Geom::Matrix const transform(item->transform);
940 float const scale = transform.descrim();
941 gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
942 gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
944 float o_width, o_miter;
945 JoinType o_join;
946 ButtType o_butt;
948 {
949 int jointype, captype;
951 jointype = i_style->stroke_linejoin.computed;
952 captype = i_style->stroke_linecap.computed;
953 o_width = i_style->stroke_width.computed;
955 switch (jointype) {
956 case SP_STROKE_LINEJOIN_MITER:
957 o_join = join_pointy;
958 break;
959 case SP_STROKE_LINEJOIN_ROUND:
960 o_join = join_round;
961 break;
962 default:
963 o_join = join_straight;
964 break;
965 }
967 switch (captype) {
968 case SP_STROKE_LINECAP_SQUARE:
969 o_butt = butt_square;
970 break;
971 case SP_STROKE_LINECAP_ROUND:
972 o_butt = butt_round;
973 break;
974 default:
975 o_butt = butt_straight;
976 break;
977 }
979 if (o_width < 0.1)
980 o_width = 0.1;
981 o_miter = i_style->stroke_miterlimit.value * o_width;
982 }
984 SPCurve *curvetemp = curve_for_item(item);
985 if (curvetemp == NULL) {
986 curve->unref();
987 continue;
988 }
989 // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
990 Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curvetemp->get_pathvector() );
991 curvetemp->unref();
993 Path *orig = new Path;
994 orig->LoadPathVector(pathv);
996 Path *res = new Path;
997 res->SetBackData(false);
999 if (i_style->stroke_dash.n_dash) {
1000 // For dashed strokes, use Stroke method, because Outline can't do dashes
1001 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
1003 orig->ConvertWithBackData(0.1);
1005 orig->DashPolylineFromStyle(i_style, scale, 0);
1007 Shape* theShape = new Shape;
1008 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
1009 0.5 * o_miter);
1010 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1012 Shape *theRes = new Shape;
1014 theRes->ConvertToShape(theShape, fill_positive);
1016 Path *originaux[1];
1017 originaux[0] = res;
1018 theRes->ConvertToForme(orig, 1, originaux);
1020 res->Coalesce(5.0);
1022 delete theShape;
1023 delete theRes;
1025 } else {
1027 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1029 orig->Coalesce(0.5 * o_width);
1031 Shape *theShape = new Shape;
1032 Shape *theRes = new Shape;
1034 res->ConvertWithBackData(1.0);
1035 res->Fill(theShape, 0);
1036 theRes->ConvertToShape(theShape, fill_positive);
1038 Path *originaux[1];
1039 originaux[0] = res;
1040 theRes->ConvertToForme(orig, 1, originaux);
1042 delete theShape;
1043 delete theRes;
1044 }
1046 if (orig->descr_cmd.size() <= 1) {
1047 // ca a merd\8e, ou bien le resultat est vide
1048 delete res;
1049 delete orig;
1050 continue;
1051 }
1053 did = true;
1055 // remember the position of the item
1056 gint pos = SP_OBJECT_REPR(item)->position();
1057 // remember parent
1058 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1059 // remember id
1060 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1061 // remember title
1062 gchar *title = item->title();
1063 // remember description
1064 gchar *desc = item->desc();
1066 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1068 SPDocument * doc = sp_desktop_document(desktop);
1069 Inkscape::XML::Document *xml_doc = doc->getReprDoc();
1070 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1072 // restore old style, but set old stroke style on fill
1073 sp_repr_css_change(repr, ncss, "style");
1075 sp_repr_css_attr_unref(ncss);
1077 gchar *str = orig->svg_dump_path();
1078 repr->setAttribute("d", str);
1079 g_free(str);
1081 if (mask)
1082 repr->setAttribute("mask", mask);
1083 if (clip_path)
1084 repr->setAttribute("clip-path", clip_path);
1086 if (SP_IS_SHAPE(item) && SP_SHAPE(item)->hasMarkers ()) {
1088 Inkscape::XML::Document *xml_doc = doc->getReprDoc();
1089 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
1091 // add the group to the parent
1092 parent->appendChild(g_repr);
1093 // move to the saved position
1094 g_repr->setPosition(pos > 0 ? pos : 0);
1096 g_repr->appendChild(repr);
1097 // restore title, description, id, transform
1098 repr->setAttribute("id", id);
1099 SPItem *newitem = (SPItem *) doc->getObjectByRepr(repr);
1100 newitem->doWriteTransform(repr, transform);
1101 if (title) {
1102 newitem->setTitle(title);
1103 }
1104 if (desc) {
1105 newitem->setDesc(desc);
1106 }
1108 SPShape *shape = SP_SHAPE(item);
1110 Geom::PathVector const & pathv = curve->get_pathvector();
1112 // START marker
1113 for (int i = 0; i < 2; i++) { // SP_MARKER_LOC and SP_MARKER_LOC_START
1114 if ( SPObject *marker_obj = shape->marker[i] ) {
1115 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
1116 sp_selected_path_outline_add_marker( marker_obj, m,
1117 Geom::Scale(i_style->stroke_width.computed), transform,
1118 g_repr, xml_doc, doc );
1119 }
1120 }
1121 // MID marker
1122 for (int i = 0; i < 3; i += 2) { // SP_MARKER_LOC and SP_MARKER_LOC_MID
1123 SPObject *midmarker_obj = shape->marker[i];
1124 if (!midmarker_obj) continue;
1125 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
1126 // START position
1127 if ( path_it != pathv.begin()
1128 && ! ((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
1129 {
1130 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
1131 sp_selected_path_outline_add_marker( midmarker_obj, m,
1132 Geom::Scale(i_style->stroke_width.computed), transform,
1133 g_repr, xml_doc, doc );
1134 }
1135 // MID position
1136 if (path_it->size_default() > 1) {
1137 Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve
1138 Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve
1139 while (curve_it2 != path_it->end_default())
1140 {
1141 /* Put marker between curve_it1 and curve_it2.
1142 * Loop to end_default (so including closing segment), because when a path is closed,
1143 * there should be a midpoint marker between last segment and closing straight line segment
1144 */
1145 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
1146 sp_selected_path_outline_add_marker(midmarker_obj, m,
1147 Geom::Scale(i_style->stroke_width.computed), transform,
1148 g_repr, xml_doc, doc);
1150 ++curve_it1;
1151 ++curve_it2;
1152 }
1153 }
1154 // END position
1155 if ( path_it != (pathv.end()-1) && !path_it->empty()) {
1156 Geom::Curve const &lastcurve = path_it->back_default();
1157 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1158 sp_selected_path_outline_add_marker( midmarker_obj, m,
1159 Geom::Scale(i_style->stroke_width.computed), transform,
1160 g_repr, xml_doc, doc );
1161 }
1162 }
1163 }
1164 // END marker
1165 for (int i = 0; i < 4; i += 3) { // SP_MARKER_LOC and SP_MARKER_LOC_END
1166 if ( SPObject *marker_obj = shape->marker[i] ) {
1167 /* Get reference to last curve in the path.
1168 * For moveto-only path, this returns the "closing line segment". */
1169 Geom::Path const &path_last = pathv.back();
1170 unsigned int index = path_last.size_default();
1171 if (index > 0) {
1172 index--;
1173 }
1174 Geom::Curve const &lastcurve = path_last[index];
1176 Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1177 sp_selected_path_outline_add_marker( marker_obj, m,
1178 Geom::Scale(i_style->stroke_width.computed), transform,
1179 g_repr, xml_doc, doc );
1180 }
1181 }
1183 selection->add(g_repr);
1185 Inkscape::GC::release(g_repr);
1188 } else {
1190 // add the new repr to the parent
1191 parent->appendChild(repr);
1193 // move to the saved position
1194 repr->setPosition(pos > 0 ? pos : 0);
1196 // restore title, description, id, transform
1197 repr->setAttribute("id", id);
1199 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1200 newitem->doWriteTransform(repr, transform);
1201 if (title) {
1202 newitem->setTitle(title);
1203 }
1204 if (desc) {
1205 newitem->setDesc(desc);
1206 }
1208 selection->add(repr);
1210 }
1212 Inkscape::GC::release(repr);
1214 curve->unref();
1215 selection->remove(item);
1216 SP_OBJECT(item)->deleteObject(false);
1218 }
1219 if (title) g_free(title);
1220 if (desc) g_free(desc);
1222 delete res;
1223 delete orig;
1224 }
1226 if (did) {
1227 DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
1228 _("Convert stroke to path"));
1229 } else {
1230 // TRANSLATORS: "to outline" means "to convert stroke to path"
1231 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
1232 return;
1233 }
1234 }
1237 void
1238 sp_selected_path_offset(SPDesktop *desktop)
1239 {
1240 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1241 double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1243 sp_selected_path_do_offset(desktop, true, prefOffset);
1244 }
1245 void
1246 sp_selected_path_inset(SPDesktop *desktop)
1247 {
1248 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1249 double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1251 sp_selected_path_do_offset(desktop, false, prefOffset);
1252 }
1254 void
1255 sp_selected_path_offset_screen(SPDesktop *desktop, double pixels)
1256 {
1257 sp_selected_path_do_offset(desktop, true, pixels / desktop->current_zoom());
1258 }
1260 void
1261 sp_selected_path_inset_screen(SPDesktop *desktop, double pixels)
1262 {
1263 sp_selected_path_do_offset(desktop, false, pixels / desktop->current_zoom());
1264 }
1267 void sp_selected_path_create_offset_object_zero(SPDesktop *desktop)
1268 {
1269 sp_selected_path_create_offset_object(desktop, 0, false);
1270 }
1272 void sp_selected_path_create_offset(SPDesktop *desktop)
1273 {
1274 sp_selected_path_create_offset_object(desktop, 1, false);
1275 }
1276 void sp_selected_path_create_inset(SPDesktop *desktop)
1277 {
1278 sp_selected_path_create_offset_object(desktop, -1, false);
1279 }
1281 void sp_selected_path_create_updating_offset_object_zero(SPDesktop *desktop)
1282 {
1283 sp_selected_path_create_offset_object(desktop, 0, true);
1284 }
1286 void sp_selected_path_create_updating_offset(SPDesktop *desktop)
1287 {
1288 sp_selected_path_create_offset_object(desktop, 1, true);
1289 }
1290 void sp_selected_path_create_updating_inset(SPDesktop *desktop)
1291 {
1292 sp_selected_path_create_offset_object(desktop, -1, true);
1293 }
1295 void
1296 sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating)
1297 {
1298 Inkscape::Selection *selection;
1299 Inkscape::XML::Node *repr;
1300 SPItem *item;
1301 SPCurve *curve;
1302 gchar *style, *str;
1303 float o_width, o_miter;
1304 JoinType o_join;
1305 ButtType o_butt;
1307 curve = NULL;
1309 selection = sp_desktop_selection(desktop);
1311 item = selection->singleItem();
1313 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
1314 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
1315 return;
1316 }
1317 if (SP_IS_SHAPE(item))
1318 {
1319 curve = SP_SHAPE(item)->getCurve();
1320 if (curve == NULL)
1321 return;
1322 }
1323 if (SP_IS_TEXT(item))
1324 {
1325 curve = SP_TEXT(item)->getNormalizedBpath();
1326 if (curve == NULL)
1327 return;
1328 }
1330 Geom::Matrix const transform(item->transform);
1332 item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1334 //XML Tree being used directly here while it shouldn't be...
1335 style = g_strdup(SP_OBJECT(item)->getRepr()->attribute("style"));
1337 // remember the position of the item
1338 gint pos = SP_OBJECT_REPR(item)->position();
1339 // remember parent
1340 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1342 {
1343 SPStyle *i_style = SP_OBJECT(item)->style;
1344 int jointype, captype;
1346 jointype = i_style->stroke_linejoin.value;
1347 captype = i_style->stroke_linecap.value;
1348 o_width = i_style->stroke_width.computed;
1349 if (jointype == SP_STROKE_LINEJOIN_MITER)
1350 {
1351 o_join = join_pointy;
1352 }
1353 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1354 {
1355 o_join = join_round;
1356 }
1357 else
1358 {
1359 o_join = join_straight;
1360 }
1361 if (captype == SP_STROKE_LINECAP_SQUARE)
1362 {
1363 o_butt = butt_square;
1364 }
1365 else if (captype == SP_STROKE_LINECAP_ROUND)
1366 {
1367 o_butt = butt_round;
1368 }
1369 else
1370 {
1371 o_butt = butt_straight;
1372 }
1374 {
1375 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1376 o_width = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1377 }
1379 if (o_width < 0.01)
1380 o_width = 0.01;
1381 o_miter = i_style->stroke_miterlimit.value * o_width;
1382 }
1384 Path *orig = Path_for_item(item, true, false);
1385 if (orig == NULL)
1386 {
1387 g_free(style);
1388 curve->unref();
1389 return;
1390 }
1392 Path *res = new Path;
1393 res->SetBackData(false);
1395 {
1396 Shape *theShape = new Shape;
1397 Shape *theRes = new Shape;
1399 orig->ConvertWithBackData(1.0);
1400 orig->Fill(theShape, 0);
1402 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1403 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1404 if (val && strcmp(val, "nonzero") == 0)
1405 {
1406 theRes->ConvertToShape(theShape, fill_nonZero);
1407 }
1408 else if (val && strcmp(val, "evenodd") == 0)
1409 {
1410 theRes->ConvertToShape(theShape, fill_oddEven);
1411 }
1412 else
1413 {
1414 theRes->ConvertToShape(theShape, fill_nonZero);
1415 }
1417 Path *originaux[1];
1418 originaux[0] = orig;
1419 theRes->ConvertToForme(res, 1, originaux);
1421 delete theShape;
1422 delete theRes;
1423 }
1425 curve->unref();
1427 if (res->descr_cmd.size() <= 1)
1428 {
1429 // pas vraiment de points sur le resultat
1430 // donc il ne reste rien
1431 DocumentUndo::done(sp_desktop_document(desktop),
1432 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1433 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1434 (updating ? _("Create linked offset")
1435 : _("Create dynamic offset")));
1436 selection->clear();
1438 delete res;
1439 delete orig;
1440 g_free(style);
1441 return;
1442 }
1444 {
1445 gchar tstr[80];
1447 tstr[79] = '\0';
1449 Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
1450 repr = xml_doc->createElement("svg:path");
1451 repr->setAttribute("sodipodi:type", "inkscape:offset");
1452 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1453 ? o_width
1454 : expand < 0
1455 ? -o_width
1456 : 0 ));
1458 str = res->svg_dump_path();
1459 repr->setAttribute("inkscape:original", str);
1460 g_free(str);
1462 if ( updating ) {
1464 //XML Tree being used directly here while it shouldn't be
1465 char const *id = SP_OBJECT(item)->getRepr()->attribute("id");
1466 char const *uri = g_strdup_printf("#%s", id);
1467 repr->setAttribute("xlink:href", uri);
1468 g_free((void *) uri);
1469 } else {
1470 repr->setAttribute("inkscape:href", NULL);
1471 }
1473 repr->setAttribute("style", style);
1475 // add the new repr to the parent
1476 parent->appendChild(repr);
1478 // move to the saved position
1479 repr->setPosition(pos > 0 ? pos : 0);
1481 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1483 if ( updating ) {
1484 // on conserve l'original
1485 // we reapply the transform to the original (offset will feel it)
1486 item->doWriteTransform(SP_OBJECT_REPR(item), transform);
1487 } else {
1488 // delete original, apply the transform to the offset
1489 SP_OBJECT(item)->deleteObject(false);
1490 nitem->doWriteTransform(repr, transform);
1491 }
1493 // The object just created from a temporary repr is only a seed.
1494 // We need to invoke its write which will update its real repr (in particular adding d=)
1495 SP_OBJECT(nitem)->updateRepr();
1497 Inkscape::GC::release(repr);
1499 selection->set(nitem);
1500 }
1502 DocumentUndo::done(sp_desktop_document(desktop),
1503 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1504 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1505 (updating ? _("Create linked offset")
1506 : _("Create dynamic offset")));
1508 delete res;
1509 delete orig;
1511 g_free(style);
1512 }
1525 void
1526 sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset)
1527 {
1528 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1530 if (selection->isEmpty()) {
1531 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1532 return;
1533 }
1535 bool did = false;
1537 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1538 items != NULL;
1539 items = items->next) {
1541 SPItem *item = (SPItem *) items->data;
1543 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1544 continue;
1546 SPCurve *curve = NULL;
1547 if (SP_IS_SHAPE(item)) {
1548 curve = SP_SHAPE(item)->getCurve();
1549 if (curve == NULL)
1550 continue;
1551 }
1552 if (SP_IS_TEXT(item)) {
1553 curve = SP_TEXT(item)->getNormalizedBpath();
1554 if (curve == NULL)
1555 continue;
1556 }
1558 Geom::Matrix const transform(item->transform);
1560 item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1562 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1564 float o_width, o_miter;
1565 JoinType o_join;
1566 ButtType o_butt;
1568 {
1569 SPStyle *i_style = SP_OBJECT(item)->style;
1570 int jointype, captype;
1572 jointype = i_style->stroke_linejoin.value;
1573 captype = i_style->stroke_linecap.value;
1574 o_width = i_style->stroke_width.computed;
1576 switch (jointype) {
1577 case SP_STROKE_LINEJOIN_MITER:
1578 o_join = join_pointy;
1579 break;
1580 case SP_STROKE_LINEJOIN_ROUND:
1581 o_join = join_round;
1582 break;
1583 default:
1584 o_join = join_straight;
1585 break;
1586 }
1588 switch (captype) {
1589 case SP_STROKE_LINECAP_SQUARE:
1590 o_butt = butt_square;
1591 break;
1592 case SP_STROKE_LINECAP_ROUND:
1593 o_butt = butt_round;
1594 break;
1595 default:
1596 o_butt = butt_straight;
1597 break;
1598 }
1600 o_width = prefOffset;
1602 if (o_width < 0.1)
1603 o_width = 0.1;
1604 o_miter = i_style->stroke_miterlimit.value * o_width;
1605 }
1607 Path *orig = Path_for_item(item, false);
1608 if (orig == NULL) {
1609 g_free(style);
1610 curve->unref();
1611 continue;
1612 }
1614 Path *res = new Path;
1615 res->SetBackData(false);
1617 {
1618 Shape *theShape = new Shape;
1619 Shape *theRes = new Shape;
1621 orig->ConvertWithBackData(0.03);
1622 orig->Fill(theShape, 0);
1624 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1625 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1626 if (val && strcmp(val, "nonzero") == 0)
1627 {
1628 theRes->ConvertToShape(theShape, fill_nonZero);
1629 }
1630 else if (val && strcmp(val, "evenodd") == 0)
1631 {
1632 theRes->ConvertToShape(theShape, fill_oddEven);
1633 }
1634 else
1635 {
1636 theRes->ConvertToShape(theShape, fill_nonZero);
1637 }
1639 // et maintenant: offset
1640 // methode inexacte
1641 /* Path *originaux[1];
1642 originaux[0] = orig;
1643 theRes->ConvertToForme(res, 1, originaux);
1645 if (expand) {
1646 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1647 } else {
1648 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1649 }
1651 orig->ConvertWithBackData(1.0);
1652 orig->Fill(theShape, 0);
1653 theRes->ConvertToShape(theShape, fill_positive);
1654 originaux[0] = orig;
1655 theRes->ConvertToForme(res, 1, originaux);
1657 if (o_width >= 0.5) {
1658 // res->Coalesce(1.0);
1659 res->ConvertEvenLines(1.0);
1660 res->Simplify(1.0);
1661 } else {
1662 // res->Coalesce(o_width);
1663 res->ConvertEvenLines(1.0*o_width);
1664 res->Simplify(1.0 * o_width);
1665 } */
1666 // methode par makeoffset
1668 if (expand)
1669 {
1670 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1671 }
1672 else
1673 {
1674 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1675 }
1676 theRes->ConvertToShape(theShape, fill_positive);
1678 res->Reset();
1679 theRes->ConvertToForme(res);
1681 if (o_width >= 1.0)
1682 {
1683 res->ConvertEvenLines(1.0);
1684 res->Simplify(1.0);
1685 }
1686 else
1687 {
1688 res->ConvertEvenLines(1.0*o_width);
1689 res->Simplify(1.0 * o_width);
1690 }
1692 delete theShape;
1693 delete theRes;
1694 }
1696 did = true;
1698 curve->unref();
1699 // remember the position of the item
1700 gint pos = SP_OBJECT_REPR(item)->position();
1701 // remember parent
1702 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1703 // remember id
1704 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1706 selection->remove(item);
1707 SP_OBJECT(item)->deleteObject(false);
1709 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1711 gchar tstr[80];
1713 tstr[79] = '\0';
1715 Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
1716 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1718 repr->setAttribute("style", style);
1720 gchar *str = res->svg_dump_path();
1721 repr->setAttribute("d", str);
1722 g_free(str);
1724 // add the new repr to the parent
1725 parent->appendChild(repr);
1727 // move to the saved position
1728 repr->setPosition(pos > 0 ? pos : 0);
1730 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1732 // reapply the transform
1733 newitem->doWriteTransform(repr, transform);
1735 repr->setAttribute("id", id);
1737 selection->add(repr);
1739 Inkscape::GC::release(repr);
1740 }
1742 delete orig;
1743 delete res;
1744 }
1746 if (did) {
1747 DocumentUndo::done(sp_desktop_document(desktop),
1748 (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1749 (expand ? _("Outset path") : _("Inset path")));
1750 } else {
1751 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1752 return;
1753 }
1754 }
1757 static bool
1758 sp_selected_path_simplify_items(SPDesktop *desktop,
1759 Inkscape::Selection *selection, GSList *items,
1760 float threshold, bool justCoalesce,
1761 float angleLimit, bool breakableAngles,
1762 bool modifySelection);
1765 //return true if we changed something, else false
1766 bool
1767 sp_selected_path_simplify_item(SPDesktop *desktop,
1768 Inkscape::Selection *selection, SPItem *item,
1769 float threshold, bool justCoalesce,
1770 float angleLimit, bool breakableAngles,
1771 gdouble size, bool modifySelection)
1772 {
1773 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1774 return false;
1776 //If this is a group, do the children instead
1777 if (SP_IS_GROUP(item)) {
1778 GSList *items = sp_item_group_item_list(SP_GROUP(item));
1780 return sp_selected_path_simplify_items(desktop, selection, items,
1781 threshold, justCoalesce,
1782 angleLimit, breakableAngles,
1783 false);
1784 }
1787 SPCurve *curve = NULL;
1789 if (SP_IS_SHAPE(item)) {
1790 curve = SP_SHAPE(item)->getCurve();
1791 if (!curve)
1792 return false;
1793 }
1795 if (SP_IS_TEXT(item)) {
1796 curve = SP_TEXT(item)->getNormalizedBpath();
1797 if (!curve)
1798 return false;
1799 }
1801 // correct virtual size by full transform (bug #166937)
1802 size /= item->i2doc_affine().descrim();
1804 // save the transform, to re-apply it after simplification
1805 Geom::Matrix const transform(item->transform);
1807 /*
1808 reset the transform, effectively transforming the item by transform.inverse();
1809 this is necessary so that the item is transformed twice back and forth,
1810 allowing all compensations to cancel out regardless of the preferences
1811 */
1812 item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1814 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1815 gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1816 gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1818 Path *orig = Path_for_item(item, false);
1819 if (orig == NULL) {
1820 g_free(style);
1821 curve->unref();
1822 return false;
1823 }
1825 curve->unref();
1826 // remember the position of the item
1827 gint pos = SP_OBJECT_REPR(item)->position();
1828 // remember parent
1829 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1830 // remember id
1831 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1832 // remember path effect
1833 char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1834 // remember title
1835 gchar *title = item->title();
1836 // remember description
1837 gchar *desc = item->desc();
1839 //If a group was selected, to not change the selection list
1840 if (modifySelection)
1841 selection->remove(item);
1843 SP_OBJECT(item)->deleteObject(false);
1845 if ( justCoalesce ) {
1846 orig->Coalesce(threshold * size);
1847 } else {
1848 orig->ConvertEvenLines(threshold * size);
1849 orig->Simplify(threshold * size);
1850 }
1852 Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
1853 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1855 // restore style, mask and clip-path
1856 repr->setAttribute("style", style);
1857 g_free(style);
1859 if ( mask ) {
1860 repr->setAttribute("mask", mask);
1861 g_free(mask);
1862 }
1864 if ( clip_path ) {
1865 repr->setAttribute("clip-path", clip_path);
1866 g_free(clip_path);
1867 }
1869 // restore path effect
1870 repr->setAttribute("inkscape:path-effect", patheffect);
1872 // path
1873 gchar *str = orig->svg_dump_path();
1874 if (patheffect)
1875 repr->setAttribute("inkscape:original-d", str);
1876 else
1877 repr->setAttribute("d", str);
1878 g_free(str);
1880 // restore id
1881 repr->setAttribute("id", id);
1883 // add the new repr to the parent
1884 parent->appendChild(repr);
1886 // move to the saved position
1887 repr->setPosition(pos > 0 ? pos : 0);
1889 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1891 // reapply the transform
1892 newitem->doWriteTransform(repr, transform);
1894 // restore title & description
1895 if (title) {
1896 newitem->setTitle(title);
1897 g_free(title);
1898 }
1899 if (desc) {
1900 newitem->setDesc(desc);
1901 g_free(desc);
1902 }
1904 //If we are not in a selected group
1905 if (modifySelection)
1906 selection->add(repr);
1908 Inkscape::GC::release(repr);
1910 // clean up
1911 if (orig) delete orig;
1913 return true;
1914 }
1917 bool
1918 sp_selected_path_simplify_items(SPDesktop *desktop,
1919 Inkscape::Selection *selection, GSList *items,
1920 float threshold, bool justCoalesce,
1921 float angleLimit, bool breakableAngles,
1922 bool modifySelection)
1923 {
1924 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1925 bool simplifyIndividualPaths = prefs->getBool("/options/simplifyindividualpaths/value");
1927 gchar *simplificationType;
1928 if (simplifyIndividualPaths) {
1929 simplificationType = _("Simplifying paths (separately):");
1930 } else {
1931 simplificationType = _("Simplifying paths:");
1932 }
1934 bool didSomething = false;
1936 Geom::OptRect selectionBbox = selection->bounds();
1937 if (!selectionBbox) {
1938 return false;
1939 }
1940 gdouble selectionSize = L2(selectionBbox->dimensions());
1942 gdouble simplifySize = selectionSize;
1944 int pathsSimplified = 0;
1945 int totalPathCount = g_slist_length(items);
1947 // set "busy" cursor
1948 desktop->setWaitingCursor();
1950 for (; items != NULL; items = items->next) {
1951 SPItem *item = (SPItem *) items->data;
1953 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1954 continue;
1956 if (simplifyIndividualPaths) {
1957 Geom::OptRect itemBbox = item->getBounds(item->i2d_affine());
1958 if (itemBbox) {
1959 simplifySize = L2(itemBbox->dimensions());
1960 } else {
1961 simplifySize = 0;
1962 }
1963 }
1965 pathsSimplified++;
1967 if (pathsSimplified % 20 == 0) {
1968 gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."),
1969 simplificationType, pathsSimplified, totalPathCount);
1970 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1971 }
1973 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1974 threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1975 }
1977 desktop->clearWaitingCursor();
1979 if (pathsSimplified > 20) {
1980 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1981 }
1983 return didSomething;
1984 }
1986 void
1987 sp_selected_path_simplify_selection(SPDesktop *desktop, float threshold, bool justCoalesce,
1988 float angleLimit, bool breakableAngles)
1989 {
1990 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1992 if (selection->isEmpty()) {
1993 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1994 _("Select <b>path(s)</b> to simplify."));
1995 return;
1996 }
1998 GSList *items = g_slist_copy((GSList *) selection->itemList());
2000 bool didSomething = sp_selected_path_simplify_items(desktop, selection,
2001 items, threshold,
2002 justCoalesce,
2003 angleLimit,
2004 breakableAngles, true);
2006 if (didSomething)
2007 DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
2008 _("Simplify"));
2009 else
2010 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
2012 }
2015 // globals for keeping track of accelerated simplify
2016 static double previousTime = 0.0;
2017 static gdouble simplifyMultiply = 1.0;
2019 void
2020 sp_selected_path_simplify(SPDesktop *desktop)
2021 {
2022 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
2023 gdouble simplifyThreshold =
2024 prefs->getDouble("/options/simplifythreshold/value", 0.003);
2025 bool simplifyJustCoalesce = prefs->getBool("/options/simplifyjustcoalesce/value", 0);
2027 //Get the current time
2028 GTimeVal currentTimeVal;
2029 g_get_current_time(¤tTimeVal);
2030 double currentTime = currentTimeVal.tv_sec * 1000000 +
2031 currentTimeVal.tv_usec;
2033 //Was the previous call to this function recent? (<0.5 sec)
2034 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
2036 // add to the threshold 1/2 of its original value
2037 simplifyMultiply += 0.5;
2038 simplifyThreshold *= simplifyMultiply;
2040 } else {
2041 // reset to the default
2042 simplifyMultiply = 1;
2043 }
2045 //remember time for next call
2046 previousTime = currentTime;
2048 //g_print("%g\n", simplify_threshold);
2050 //Make the actual call
2051 sp_selected_path_simplify_selection(desktop, simplifyThreshold,
2052 simplifyJustCoalesce, 0.0, false);
2053 }
2057 // fonctions utilitaires
2059 bool
2060 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
2061 {
2062 if (who == NULL || a == NULL)
2063 return false;
2064 if (who == a)
2065 return true;
2066 return Ancetre(sp_repr_parent(a), who);
2067 }
2069 Path *
2070 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
2071 {
2072 SPCurve *curve = curve_for_item(item);
2074 if (curve == NULL)
2075 return NULL;
2077 Geom::PathVector *pathv = pathvector_for_curve(item, curve, doTransformation, transformFull, Geom::identity(), Geom::identity());
2078 curve->unref();
2080 Path *dest = new Path;
2081 dest->LoadPathVector(*pathv);
2082 delete pathv;
2084 return dest;
2085 }
2087 /*
2088 * NOTE: Returns empty pathvector if curve == NULL
2089 * TODO: see if calling this method can be optimized. All the pathvector copying might be slow.
2090 */
2091 Geom::PathVector*
2092 pathvector_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull, Geom::Matrix extraPreAffine, Geom::Matrix extraPostAffine)
2093 {
2094 if (curve == NULL)
2095 return NULL;
2097 Geom::PathVector *dest = new Geom::PathVector;
2098 *dest = curve->get_pathvector(); // Make a copy; must be freed by the caller!
2100 if (doTransformation) {
2101 if (transformFull) {
2102 *dest *= extraPreAffine * item->i2doc_affine() * extraPostAffine;
2103 } else {
2104 *dest *= extraPreAffine * (Geom::Matrix)item->transform * extraPostAffine;
2105 }
2106 } else {
2107 *dest *= extraPreAffine * extraPostAffine;
2108 }
2110 return dest;
2111 }
2113 SPCurve* curve_for_item(SPItem *item)
2114 {
2115 if (!item)
2116 return NULL;
2118 SPCurve *curve = NULL;
2119 if (SP_IS_SHAPE(item)) {
2120 if (SP_IS_PATH(item)) {
2121 curve = sp_path_get_curve_for_edit(SP_PATH(item));
2122 } else {
2123 curve = SP_SHAPE(item)->getCurve();
2124 }
2125 }
2126 else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
2127 {
2128 curve = te_get_layout(item)->convertToCurves();
2129 }
2130 else if (SP_IS_IMAGE(item))
2131 {
2132 curve = sp_image_get_curve(SP_IMAGE(item));
2133 }
2135 return curve; // do not forget to unref the curve at some point!
2136 }
2138 boost::optional<Path::cut_position> get_nearest_position_on_Path(Path *path, Geom::Point p, unsigned seg)
2139 {
2140 //get nearest position on path
2141 Path::cut_position pos = path->PointToCurvilignPosition(p, seg);
2142 return pos;
2143 }
2145 Geom::Point get_point_on_Path(Path *path, int piece, double t)
2146 {
2147 Geom::Point p;
2148 path->PointAt(piece, t, p);
2149 return p;
2150 }
2153 /*
2154 Local Variables:
2155 mode:c++
2156 c-file-style:"stroustrup"
2157 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
2158 indent-tabs-mode:nil
2159 fill-column:99
2160 End:
2161 */
2162 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :