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 <vector>
21 #include <glib/gmem.h>
22 #include "xml/repr.h"
23 #include "svg/svg.h"
24 #include "sp-path.h"
25 #include "sp-shape.h"
26 #include "marker.h"
27 #include "enums.h"
28 #include "sp-text.h"
29 #include "sp-item-group.h"
30 #include "style.h"
31 #include "inkscape.h"
32 #include "document.h"
33 #include "message-stack.h"
34 #include "selection.h"
35 #include "desktop-handles.h"
36 #include "desktop.h"
37 #include "display/canvas-bpath.h"
38 #include "display/curve.h"
39 #include <glibmm/i18n.h>
40 #include "prefs-utils.h"
42 #include "libnr/n-art-bpath.h"
43 #include "libnr/nr-path.h"
44 #include "xml/repr.h"
45 #include "xml/repr-sorting.h"
47 #include <libnr/nr-matrix-fns.h>
48 #include <libnr/nr-matrix-ops.h>
49 #include <libnr/nr-matrix-translate-ops.h>
50 #include <libnr/nr-scale-matrix-ops.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(bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
60 void sp_selected_path_do_offset(bool expand, double prefOffset);
61 void sp_selected_path_create_offset_object(int expand, bool updating);
63 void
64 sp_selected_path_union()
65 {
66 sp_selected_path_boolop(bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
67 }
69 void
70 sp_selected_path_intersect()
71 {
72 sp_selected_path_boolop(bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
73 }
75 void
76 sp_selected_path_diff()
77 {
78 sp_selected_path_boolop(bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
79 }
81 void
82 sp_selected_path_symdiff()
83 {
84 sp_selected_path_boolop(bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
85 }
86 void
87 sp_selected_path_cut()
88 {
89 sp_selected_path_boolop(bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
90 }
91 void
92 sp_selected_path_slice()
93 {
94 sp_selected_path_boolop(bool_op_slice, SP_VERB_SELECTION_SLICE, _("Cut path"));
95 }
98 // boolean operations
99 // take the source paths from the file, do the operation, delete the originals and add the results
100 void
101 sp_selected_path_boolop(bool_op bop, const unsigned int verb, const Glib::ustring description)
102 {
103 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
105 Inkscape::Selection *selection = sp_desktop_selection(desktop);
107 GSList *il = (GSList *) selection->itemList();
109 // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
110 if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
111 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
112 return;
113 }
114 else if ( g_slist_length(il) < 1 ) {
115 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
116 return;
117 }
119 if (g_slist_length(il) > 2) {
120 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
121 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
122 return;
123 }
124 }
126 // reverseOrderForOp marks whether the order of the list is the top->down order
127 // it's only used when there are 2 objects, and for operations who need to know the
128 // topmost object (differences, cuts)
129 bool reverseOrderForOp = false;
131 // mettre les elements de la liste dans l'ordre pour ces operations
132 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
133 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
134 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
135 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
137 if (a == NULL || b == NULL) {
138 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."));
139 return;
140 }
142 if (Ancetre(a, b)) {
143 // a is the parent of b, already in the proper order
144 } else if (Ancetre(b, a)) {
145 // reverse order
146 reverseOrderForOp = true;
147 } else {
149 // objects are not in parent/child relationship;
150 // find their lowest common ancestor
151 Inkscape::XML::Node *dad = LCA(a, b);
152 if (dad == NULL) {
153 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."));
154 return;
155 }
157 // find the children of the LCA that lead from it to the a and b
158 Inkscape::XML::Node *as = AncetreFils(a, dad);
159 Inkscape::XML::Node *bs = AncetreFils(b, dad);
161 // find out which comes first
162 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
163 if (child == as) {
164 /* a first, so reverse. */
165 reverseOrderForOp = true;
166 break;
167 }
168 if (child == bs)
169 break;
170 }
171 }
172 }
174 il = g_slist_copy(il);
176 // first check if all the input objects have shapes
177 // otherwise bail out
178 for (GSList *l = il; l != NULL; l = l->next)
179 {
180 SPItem *item = SP_ITEM(l->data);
181 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
182 {
183 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
184 g_slist_free(il);
185 return;
186 }
187 }
189 // extract the livarot Paths from the source objects
190 // also get the winding rule specified in the style
191 int nbOriginaux = g_slist_length(il);
192 std::vector<Path *> originaux(nbOriginaux);
193 std::vector<FillRule> origWind(nbOriginaux);
194 int curOrig;
195 {
196 curOrig = 0;
197 for (GSList *l = il; l != NULL; l = l->next)
198 {
199 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
200 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
201 if (val && strcmp(val, "nonzero") == 0) {
202 origWind[curOrig]= fill_nonZero;
203 } else if (val && strcmp(val, "evenodd") == 0) {
204 origWind[curOrig]= fill_oddEven;
205 } else {
206 origWind[curOrig]= fill_nonZero;
207 }
209 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
210 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
211 {
212 for (int i = curOrig; i >= 0; i--) delete originaux[i];
213 g_slist_free(il);
214 return;
215 }
216 curOrig++;
217 }
218 }
219 // reverse if needed
220 // note that the selection list keeps its order
221 if ( reverseOrderForOp ) {
222 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
223 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
224 }
226 // and work
227 // some temporary instances, first
228 Shape *theShapeA = new Shape;
229 Shape *theShapeB = new Shape;
230 Shape *theShape = new Shape;
231 Path *res = new Path;
232 res->SetBackData(false);
233 Path::cut_position *toCut=NULL;
234 int nbToCut=0;
236 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
237 // true boolean op
238 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
239 originaux[0]->ConvertWithBackData(0.1);
241 originaux[0]->Fill(theShape, 0);
243 theShapeA->ConvertToShape(theShape, origWind[0]);
245 curOrig = 1;
246 for (GSList *l = il->next; l != NULL; l = l->next) {
247 originaux[curOrig]->ConvertWithBackData(0.1);
249 originaux[curOrig]->Fill(theShape, curOrig);
251 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
253 // les elements arrivent en ordre inverse dans la liste
254 theShape->Booleen(theShapeB, theShapeA, bop);
256 {
257 Shape *swap = theShape;
258 theShape = theShapeA;
259 theShapeA = swap;
260 }
261 curOrig++;
262 }
264 {
265 Shape *swap = theShape;
266 theShape = theShapeA;
267 theShapeA = swap;
268 }
270 } else if ( bop == bool_op_cut ) {
271 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
272 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
273 // it is just uncrossed, and cleaned from duplicate edges and points
274 // then it's fed to Booleen() which will uncross it against the other path
275 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
276 // thus making a polygon. the weight of the edges of the cut are all 0, but
277 // the Booleen need to invert the ones inside the source polygon (for the subsequent
278 // ConvertToForme)
280 // the cut path needs to have the highest pathID in the back data
281 // that's how the Booleen() function knows it's an edge of the cut
283 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
284 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
285 // left it at 1.0. Investigate replacing this by a combination of difference and
286 // intersection of the same two paths. -- bb
287 {
288 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
289 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
290 }
291 originaux[0]->ConvertWithBackData(1.0);
293 originaux[0]->Fill(theShape, 0);
295 theShapeA->ConvertToShape(theShape, origWind[0]);
297 originaux[1]->ConvertWithBackData(1.0);
299 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
301 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
303 // les elements arrivent en ordre inverse dans la liste
304 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
306 } else if ( bop == bool_op_slice ) {
307 // slice is not really a boolean operation
308 // you just put the 2 shapes in a single polygon, uncross it
309 // the points where the degree is > 2 are intersections
310 // just check it's an intersection on the path you want to cut, and keep it
311 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
312 // make new subpath at each one of these positions
313 // inversion pour l'op\8eration
314 {
315 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
316 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
317 }
318 originaux[0]->ConvertWithBackData(1.0);
320 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
322 originaux[1]->ConvertWithBackData(1.0);
324 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
326 theShape->ConvertToShape(theShapeA, fill_justDont);
328 if ( theShape->hasBackData() ) {
329 // should always be the case, but ya never know
330 {
331 for (int i = 0; i < theShape->numberOfPoints(); i++) {
332 if ( theShape->getPoint(i).totalDegree() > 2 ) {
333 // possibly an intersection
334 // we need to check that at least one edge from the source path is incident to it
335 // before we declare it's an intersection
336 int cb = theShape->getPoint(i).incidentEdge[FIRST];
337 int nbOrig=0;
338 int nbOther=0;
339 int piece=-1;
340 float t=0.0;
341 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
342 if ( theShape->ebData[cb].pathID == 0 ) {
343 // the source has an edge incident to the point, get its position on the path
344 piece=theShape->ebData[cb].pieceID;
345 if ( theShape->getEdge(cb).st == i ) {
346 t=theShape->ebData[cb].tSt;
347 } else {
348 t=theShape->ebData[cb].tEn;
349 }
350 nbOrig++;
351 }
352 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
353 cb=theShape->NextAt(i, cb);
354 }
355 if ( nbOrig > 0 && nbOther > 0 ) {
356 // point incident to both path and cut: an intersection
357 // note that you only keep one position on the source; you could have degenerate
358 // cases where the source crosses itself at this point, and you wouyld miss an intersection
359 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
360 toCut[nbToCut].piece=piece;
361 toCut[nbToCut].t=t;
362 nbToCut++;
363 }
364 }
365 }
366 }
367 {
368 // i think it's useless now
369 int i = theShape->numberOfEdges() - 1;
370 for (;i>=0;i--) {
371 if ( theShape->ebData[i].pathID == 1 ) {
372 theShape->SubEdge(i);
373 }
374 }
375 }
377 }
378 }
380 int* nesting=NULL;
381 int* conts=NULL;
382 int nbNest=0;
383 // pour compenser le swap juste avant
384 if ( bop == bool_op_slice ) {
385 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
386 // res->ConvertForcedToMoveTo();
387 res->Copy(originaux[0]);
388 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
389 free(toCut);
390 } else if ( bop == bool_op_cut ) {
391 // il faut appeler pour desallouer PointData (pas vital, mais bon)
392 // the Booleen() function did not deallocated the point_data array in theShape, because this
393 // function needs it.
394 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
395 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
396 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
397 } else {
398 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
399 }
401 delete theShape;
402 delete theShapeA;
403 delete theShapeB;
404 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
406 if (res->descr_cmd.size() <= 1)
407 {
408 // only one command, presumably a moveto: it isn't a path
409 for (GSList *l = il; l != NULL; l = l->next)
410 {
411 SP_OBJECT(l->data)->deleteObject();
412 }
413 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
414 description);
415 selection->clear();
417 delete res;
418 g_slist_free(il);
419 return;
420 }
422 // get the source path object
423 SPObject *source;
424 if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
425 if (reverseOrderForOp) {
426 source = SP_OBJECT(il->data);
427 } else {
428 source = SP_OBJECT(il->next->data);
429 }
430 } else {
431 // find out the bottom object
432 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
434 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
436 source = sp_desktop_document(desktop)->
437 getObjectByRepr((Inkscape::XML::Node *)sorted->data);
439 g_slist_free(sorted);
440 }
442 // adjust style properties that depend on a possible transform in the source object in order
443 // to get a correct style attribute for the new path
444 SPItem* item_source = SP_ITEM(source);
445 NR::Matrix i2d = sp_item_i2d_affine(item_source);
446 sp_item_adjust_stroke(item_source, i2d.expansion());
447 sp_item_adjust_pattern(item_source, i2d);
448 sp_item_adjust_gradient(item_source, i2d);
450 Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
452 // remember important aspects of the source path, to be restored
453 gint pos = repr_source->position();
454 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
455 gchar const *id = repr_source->attribute("id");
456 gchar const *style = repr_source->attribute("style");
457 gchar const *mask = repr_source->attribute("mask");
458 gchar const *clip_path = repr_source->attribute("clip-path");
460 // remove source paths
461 selection->clear();
462 for (GSList *l = il; l != NULL; l = l->next) {
463 // if this is the bottommost object,
464 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
465 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
466 SP_OBJECT(l->data)->deleteObject(false);
467 } else {
468 // delete the object for real, so that its clones can take appropriate action
469 SP_OBJECT(l->data)->deleteObject();
470 }
471 }
472 g_slist_free(il);
474 // premultiply by the inverse of parent's repr
475 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
476 NR::Matrix local = sp_item_i2doc_affine(parent_item);
477 gchar *transform = sp_svg_transform_write(local);
479 // now that we have the result, add it on the canvas
480 if ( bop == bool_op_cut || bop == bool_op_slice ) {
481 int nbRP=0;
482 Path** resPath;
483 if ( bop == bool_op_slice ) {
484 // there are moveto's at each intersection, but it's still one unique path
485 // so break it down and add each subpath independently
486 // we could call break_apart to do this, but while we have the description...
487 resPath=res->SubPaths(nbRP, false);
488 } else {
489 // cut operation is a bit wicked: you need to keep holes
490 // that's why you needed the nesting
491 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
492 // to get the path for each part of the polygon. that's why you need the nesting info:
493 // to know in wich subpath to add a subpath
494 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
496 // cleaning
497 if ( conts ) free(conts);
498 if ( nesting ) free(nesting);
499 }
501 // add all the pieces resulting from cut or slice
502 for (int i=0;i<nbRP;i++) {
503 gchar *d = resPath[i]->svg_dump_path();
505 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
506 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
507 repr->setAttribute("style", style);
508 if (mask)
509 repr->setAttribute("mask", mask);
510 if (clip_path)
511 repr->setAttribute("clip-path", clip_path);
513 repr->setAttribute("d", d);
514 g_free(d);
516 // for slice, remove fill
517 if (bop == bool_op_slice) {
518 SPCSSAttr *css;
520 css = sp_repr_css_attr_new();
521 sp_repr_css_set_property(css, "fill", "none");
523 sp_repr_css_change(repr, css, "style");
525 sp_repr_css_attr_unref(css);
526 }
528 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
529 // this means it's basically random which of the pieces inherits the original's id and clones
530 // a better algorithm might figure out e.g. the biggest piece
531 repr->setAttribute("id", id);
533 repr->setAttribute("transform", transform);
535 // add the new repr to the parent
536 parent->appendChild(repr);
538 // move to the saved position
539 repr->setPosition(pos > 0 ? pos : 0);
541 selection->add(repr);
542 Inkscape::GC::release(repr);
544 delete resPath[i];
545 }
546 if ( resPath ) free(resPath);
548 } else {
549 gchar *d = res->svg_dump_path();
551 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
552 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
553 repr->setAttribute("style", style);
555 if ( mask )
556 repr->setAttribute("mask", mask);
558 if ( clip_path )
559 repr->setAttribute("clip-path", clip_path);
561 repr->setAttribute("d", d);
562 g_free(d);
564 repr->setAttribute("transform", transform);
566 repr->setAttribute("id", id);
567 parent->appendChild(repr);
568 repr->setPosition(pos > 0 ? pos : 0);
570 selection->add(repr);
571 Inkscape::GC::release(repr);
572 }
574 g_free(transform);
576 sp_document_done(sp_desktop_document(desktop), verb, description);
578 delete res;
579 }
582 void
583 sp_selected_path_outline()
584 {
585 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
587 Inkscape::Selection *selection = sp_desktop_selection(desktop);
589 if (selection->isEmpty()) {
590 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
591 return;
592 }
594 bool did = false;
596 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
597 items != NULL;
598 items = items->next) {
600 SPItem *item = (SPItem *) items->data;
602 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
603 continue;
605 SPCurve *curve = NULL;
606 if (SP_IS_SHAPE(item)) {
607 curve = sp_shape_get_curve(SP_SHAPE(item));
608 if (curve == NULL)
609 continue;
610 }
611 if (SP_IS_TEXT(item)) {
612 curve = SP_TEXT(item)->getNormalizedBpath();
613 if (curve == NULL)
614 continue;
615 }
617 { // pas de stroke pas de chocolat
618 SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
619 gchar const *val = sp_repr_css_property(css, "stroke", NULL);
621 if (val == NULL || strcmp(val, "none") == 0) {
622 sp_curve_unref(curve);
623 continue;
624 }
625 }
627 // remember old stroke style, to be set on fill
628 SPCSSAttr *ncss;
629 {
630 SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
631 gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
632 gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
634 ncss = sp_repr_css_attr_new();
636 sp_repr_css_set_property(ncss, "stroke", "none");
637 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
638 sp_repr_css_set_property(ncss, "fill", val);
639 if ( opac ) {
640 sp_repr_css_set_property(ncss, "fill-opacity", opac);
641 } else {
642 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
643 }
644 sp_repr_css_unset_property(ncss, "marker-start");
645 sp_repr_css_unset_property(ncss, "marker-mid");
646 sp_repr_css_unset_property(ncss, "marker-end");
647 }
649 NR::Matrix const transform(item->transform);
650 float const scale = transform.expansion();
651 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
652 SPStyle *i_style = SP_OBJECT(item)->style;
653 gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
654 gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
656 float o_width, o_miter;
657 JoinType o_join;
658 ButtType o_butt;
660 {
661 int jointype, captype;
663 jointype = i_style->stroke_linejoin.computed;
664 captype = i_style->stroke_linecap.computed;
665 o_width = i_style->stroke_width.computed;
667 switch (jointype) {
668 case SP_STROKE_LINEJOIN_MITER:
669 o_join = join_pointy;
670 break;
671 case SP_STROKE_LINEJOIN_ROUND:
672 o_join = join_round;
673 break;
674 default:
675 o_join = join_straight;
676 break;
677 }
679 switch (captype) {
680 case SP_STROKE_LINECAP_SQUARE:
681 o_butt = butt_square;
682 break;
683 case SP_STROKE_LINECAP_ROUND:
684 o_butt = butt_round;
685 break;
686 default:
687 o_butt = butt_straight;
688 break;
689 }
691 if (o_width < 0.1)
692 o_width = 0.1;
693 o_miter = i_style->stroke_miterlimit.value * o_width;
694 }
696 Path *orig = Path_for_item(item, false);
697 if (orig == NULL) {
698 g_free(style);
699 sp_curve_unref(curve);
700 continue;
701 }
703 Path *res = new Path;
704 res->SetBackData(false);
706 if (i_style->stroke_dash.n_dash) {
707 // For dashed strokes, use Stroke method, because Outline can't do dashes
708 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
710 orig->ConvertWithBackData(0.1);
712 orig->DashPolylineFromStyle(i_style, scale, 0);
714 Shape* theShape = new Shape;
715 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
716 0.5 * o_miter);
717 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
719 Shape *theRes = new Shape;
721 theRes->ConvertToShape(theShape, fill_positive);
723 Path *originaux[1];
724 originaux[0] = res;
725 theRes->ConvertToForme(orig, 1, originaux);
727 res->Coalesce(5.0);
729 delete theShape;
730 delete theRes;
732 } else {
734 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
736 orig->Coalesce(0.5 * o_width);
738 Shape *theShape = new Shape;
739 Shape *theRes = new Shape;
741 res->ConvertWithBackData(1.0);
742 res->Fill(theShape, 0);
743 theRes->ConvertToShape(theShape, fill_positive);
745 Path *originaux[1];
746 originaux[0] = res;
747 theRes->ConvertToForme(orig, 1, originaux);
749 delete theShape;
750 delete theRes;
751 }
753 if (orig->descr_cmd.size() <= 1) {
754 // ca a merd\8e, ou bien le resultat est vide
755 delete res;
756 delete orig;
757 g_free(style);
758 continue;
759 }
761 did = true;
763 // remember the position of the item
764 gint pos = SP_OBJECT_REPR(item)->position();
765 // remember parent
766 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
767 // remember id
768 char const *id = SP_OBJECT_REPR(item)->attribute("id");
770 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
772 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
773 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
775 // restore old style
776 repr->setAttribute("style", style);
778 // set old stroke style on fill
779 sp_repr_css_change(repr, ncss, "style");
781 sp_repr_css_attr_unref(ncss);
783 gchar *str = orig->svg_dump_path();
784 repr->setAttribute("d", str);
785 g_free(str);
787 if (mask)
788 repr->setAttribute("mask", mask);
789 if (clip_path)
790 repr->setAttribute("clip-path", clip_path);
792 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
794 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
795 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
797 // add the group to the parent
798 parent->appendChild(g_repr);
799 // move to the saved position
800 g_repr->setPosition(pos > 0 ? pos : 0);
802 g_repr->appendChild(repr);
803 repr->setAttribute("id", id);
804 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
805 sp_item_write_transform(newitem, repr, transform);
807 SPShape *shape = SP_SHAPE(item);
809 for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) {
810 for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) {
811 if (sp_shape_marker_required (shape, m, bp)) {
813 SPMarker* marker = SP_MARKER (shape->marker[m]);
814 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m]));
816 NR::Matrix tr(sp_shape_marker_get_transform(shape, bp));
818 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
819 tr = NR::scale(i_style->stroke_width.computed) * tr;
820 }
822 // total marker transform
823 tr = marker_item->transform * marker->c2p * tr * transform;
825 if (SP_OBJECT_REPR(marker_item)) {
826 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate();
827 g_repr->appendChild(m_repr);
828 SPItem *marker_item = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(m_repr);
829 sp_item_write_transform(marker_item, m_repr, tr);
830 }
831 }
832 }
833 }
836 selection->add(g_repr);
838 Inkscape::GC::release(g_repr);
841 } else {
843 // add the new repr to the parent
844 parent->appendChild(repr);
846 // move to the saved position
847 repr->setPosition(pos > 0 ? pos : 0);
849 repr->setAttribute("id", id);
851 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
852 sp_item_write_transform(newitem, repr, transform);
854 selection->add(repr);
856 }
858 Inkscape::GC::release(repr);
860 sp_curve_unref(curve);
861 selection->remove(item);
862 SP_OBJECT(item)->deleteObject(false);
864 }
866 delete res;
867 delete orig;
868 g_free(style);
870 }
872 if (did) {
873 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
874 _("Convert stroke to path"));
875 } else {
876 // TRANSLATORS: "to outline" means "to convert stroke to path"
877 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
878 return;
879 }
880 }
883 void
884 sp_selected_path_offset()
885 {
886 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
888 sp_selected_path_do_offset(true, prefOffset);
889 }
890 void
891 sp_selected_path_inset()
892 {
893 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
895 sp_selected_path_do_offset(false, prefOffset);
896 }
898 void
899 sp_selected_path_offset_screen(double pixels)
900 {
901 sp_selected_path_do_offset(true, pixels / SP_ACTIVE_DESKTOP->current_zoom());
902 }
904 void
905 sp_selected_path_inset_screen(double pixels)
906 {
907 sp_selected_path_do_offset(false, pixels / SP_ACTIVE_DESKTOP->current_zoom());
908 }
911 void sp_selected_path_create_offset_object_zero()
912 {
913 sp_selected_path_create_offset_object(0, false);
914 }
916 void sp_selected_path_create_offset()
917 {
918 sp_selected_path_create_offset_object(1, false);
919 }
920 void sp_selected_path_create_inset()
921 {
922 sp_selected_path_create_offset_object(-1, false);
923 }
925 void sp_selected_path_create_updating_offset_object_zero()
926 {
927 sp_selected_path_create_offset_object(0, true);
928 }
930 void sp_selected_path_create_updating_offset()
931 {
932 sp_selected_path_create_offset_object(1, true);
933 }
934 void sp_selected_path_create_updating_inset()
935 {
936 sp_selected_path_create_offset_object(-1, true);
937 }
939 void
940 sp_selected_path_create_offset_object(int expand, bool updating)
941 {
942 Inkscape::Selection *selection;
943 Inkscape::XML::Node *repr;
944 SPItem *item;
945 SPCurve *curve;
946 gchar *style, *str;
947 SPDesktop *desktop;
948 float o_width, o_miter;
949 JoinType o_join;
950 ButtType o_butt;
952 curve = NULL;
954 desktop = SP_ACTIVE_DESKTOP;
956 selection = sp_desktop_selection(desktop);
958 item = selection->singleItem();
960 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
961 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
962 return;
963 }
964 if (SP_IS_SHAPE(item))
965 {
966 curve = sp_shape_get_curve(SP_SHAPE(item));
967 if (curve == NULL)
968 return;
969 }
970 if (SP_IS_TEXT(item))
971 {
972 curve = SP_TEXT(item)->getNormalizedBpath();
973 if (curve == NULL)
974 return;
975 }
977 NR::Matrix const transform(item->transform);
979 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
981 style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
983 // remember the position of the item
984 gint pos = SP_OBJECT_REPR(item)->position();
985 // remember parent
986 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
988 {
989 SPStyle *i_style = SP_OBJECT(item)->style;
990 int jointype, captype;
992 jointype = i_style->stroke_linejoin.value;
993 captype = i_style->stroke_linecap.value;
994 o_width = i_style->stroke_width.computed;
995 if (jointype == SP_STROKE_LINEJOIN_MITER)
996 {
997 o_join = join_pointy;
998 }
999 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1000 {
1001 o_join = join_round;
1002 }
1003 else
1004 {
1005 o_join = join_straight;
1006 }
1007 if (captype == SP_STROKE_LINECAP_SQUARE)
1008 {
1009 o_butt = butt_square;
1010 }
1011 else if (captype == SP_STROKE_LINECAP_ROUND)
1012 {
1013 o_butt = butt_round;
1014 }
1015 else
1016 {
1017 o_butt = butt_straight;
1018 }
1020 {
1021 double prefOffset = 1.0;
1022 prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
1023 o_width = prefOffset;
1024 }
1026 if (o_width < 0.01)
1027 o_width = 0.01;
1028 o_miter = i_style->stroke_miterlimit.value * o_width;
1029 }
1031 Path *orig = Path_for_item(item, true, false);
1032 if (orig == NULL)
1033 {
1034 g_free(style);
1035 sp_curve_unref(curve);
1036 return;
1037 }
1039 Path *res = new Path;
1040 res->SetBackData(false);
1042 {
1043 Shape *theShape = new Shape;
1044 Shape *theRes = new Shape;
1046 orig->ConvertWithBackData(1.0);
1047 orig->Fill(theShape, 0);
1049 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1050 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1051 if (val && strcmp(val, "nonzero") == 0)
1052 {
1053 theRes->ConvertToShape(theShape, fill_nonZero);
1054 }
1055 else if (val && strcmp(val, "evenodd") == 0)
1056 {
1057 theRes->ConvertToShape(theShape, fill_oddEven);
1058 }
1059 else
1060 {
1061 theRes->ConvertToShape(theShape, fill_nonZero);
1062 }
1064 Path *originaux[1];
1065 originaux[0] = orig;
1066 theRes->ConvertToForme(res, 1, originaux);
1068 delete theShape;
1069 delete theRes;
1070 }
1072 sp_curve_unref(curve);
1074 if (res->descr_cmd.size() <= 1)
1075 {
1076 // pas vraiment de points sur le resultat
1077 // donc il ne reste rien
1078 sp_document_done(sp_desktop_document(desktop),
1079 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1080 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1081 (updating ? _("Create linked offset")
1082 : _("Create dynamic offset")));
1083 selection->clear();
1085 delete res;
1086 delete orig;
1087 g_free(style);
1088 return;
1089 }
1091 {
1092 gchar tstr[80];
1094 tstr[79] = '\0';
1096 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1097 repr = xml_doc->createElement("svg:path");
1098 repr->setAttribute("sodipodi:type", "inkscape:offset");
1099 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1100 ? o_width
1101 : expand < 0
1102 ? -o_width
1103 : 0 ));
1105 str = res->svg_dump_path();
1106 repr->setAttribute("inkscape:original", str);
1107 g_free(str);
1109 if ( updating ) {
1110 char const *id = SP_OBJECT(item)->repr->attribute("id");
1111 char const *uri = g_strdup_printf("#%s", id);
1112 repr->setAttribute("xlink:href", uri);
1113 g_free((void *) uri);
1114 } else {
1115 repr->setAttribute("inkscape:href", NULL);
1116 }
1118 repr->setAttribute("style", style);
1120 // add the new repr to the parent
1121 parent->appendChild(repr);
1123 // move to the saved position
1124 repr->setPosition(pos > 0 ? pos : 0);
1126 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1128 if ( updating ) {
1129 // on conserve l'original
1130 // we reapply the transform to the original (offset will feel it)
1131 sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1132 } else {
1133 // delete original, apply the transform to the offset
1134 SP_OBJECT(item)->deleteObject(false);
1135 sp_item_write_transform(nitem, repr, transform);
1136 }
1138 // The object just created from a temporary repr is only a seed.
1139 // We need to invoke its write which will update its real repr (in particular adding d=)
1140 SP_OBJECT(nitem)->updateRepr();
1142 Inkscape::GC::release(repr);
1144 selection->set(nitem);
1145 }
1147 sp_document_done(sp_desktop_document(desktop),
1148 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1149 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1150 (updating ? _("Create linked offset")
1151 : _("Create dynamic offset")));
1153 delete res;
1154 delete orig;
1156 g_free(style);
1157 }
1170 void
1171 sp_selected_path_do_offset(bool expand, double prefOffset)
1172 {
1173 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1175 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1177 if (selection->isEmpty()) {
1178 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1179 return;
1180 }
1182 bool did = false;
1184 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1185 items != NULL;
1186 items = items->next) {
1188 SPItem *item = (SPItem *) items->data;
1190 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1191 continue;
1193 SPCurve *curve = NULL;
1194 if (SP_IS_SHAPE(item)) {
1195 curve = sp_shape_get_curve(SP_SHAPE(item));
1196 if (curve == NULL)
1197 continue;
1198 }
1199 if (SP_IS_TEXT(item)) {
1200 curve = SP_TEXT(item)->getNormalizedBpath();
1201 if (curve == NULL)
1202 continue;
1203 }
1205 NR::Matrix const transform(item->transform);
1207 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1209 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1211 float o_width, o_miter;
1212 JoinType o_join;
1213 ButtType o_butt;
1215 {
1216 SPStyle *i_style = SP_OBJECT(item)->style;
1217 int jointype, captype;
1219 jointype = i_style->stroke_linejoin.value;
1220 captype = i_style->stroke_linecap.value;
1221 o_width = i_style->stroke_width.computed;
1223 switch (jointype) {
1224 case SP_STROKE_LINEJOIN_MITER:
1225 o_join = join_pointy;
1226 break;
1227 case SP_STROKE_LINEJOIN_ROUND:
1228 o_join = join_round;
1229 break;
1230 default:
1231 o_join = join_straight;
1232 break;
1233 }
1235 switch (captype) {
1236 case SP_STROKE_LINECAP_SQUARE:
1237 o_butt = butt_square;
1238 break;
1239 case SP_STROKE_LINECAP_ROUND:
1240 o_butt = butt_round;
1241 break;
1242 default:
1243 o_butt = butt_straight;
1244 break;
1245 }
1247 o_width = prefOffset;
1249 if (o_width < 0.1)
1250 o_width = 0.1;
1251 o_miter = i_style->stroke_miterlimit.value * o_width;
1252 }
1254 Path *orig = Path_for_item(item, false);
1255 if (orig == NULL) {
1256 g_free(style);
1257 sp_curve_unref(curve);
1258 continue;
1259 }
1261 Path *res = new Path;
1262 res->SetBackData(false);
1264 {
1265 Shape *theShape = new Shape;
1266 Shape *theRes = new Shape;
1268 orig->ConvertWithBackData(0.03);
1269 orig->Fill(theShape, 0);
1271 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1272 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1273 if (val && strcmp(val, "nonzero") == 0)
1274 {
1275 theRes->ConvertToShape(theShape, fill_nonZero);
1276 }
1277 else if (val && strcmp(val, "evenodd") == 0)
1278 {
1279 theRes->ConvertToShape(theShape, fill_oddEven);
1280 }
1281 else
1282 {
1283 theRes->ConvertToShape(theShape, fill_nonZero);
1284 }
1286 // et maintenant: offset
1287 // methode inexacte
1288 /* Path *originaux[1];
1289 originaux[0] = orig;
1290 theRes->ConvertToForme(res, 1, originaux);
1292 if (expand) {
1293 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1294 } else {
1295 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1296 }
1298 orig->ConvertWithBackData(1.0);
1299 orig->Fill(theShape, 0);
1300 theRes->ConvertToShape(theShape, fill_positive);
1301 originaux[0] = orig;
1302 theRes->ConvertToForme(res, 1, originaux);
1304 if (o_width >= 0.5) {
1305 // res->Coalesce(1.0);
1306 res->ConvertEvenLines(1.0);
1307 res->Simplify(1.0);
1308 } else {
1309 // res->Coalesce(o_width);
1310 res->ConvertEvenLines(1.0*o_width);
1311 res->Simplify(1.0 * o_width);
1312 } */
1313 // methode par makeoffset
1315 if (expand)
1316 {
1317 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1318 }
1319 else
1320 {
1321 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1322 }
1323 theRes->ConvertToShape(theShape, fill_positive);
1325 res->Reset();
1326 theRes->ConvertToForme(res);
1328 if (o_width >= 1.0)
1329 {
1330 res->ConvertEvenLines(1.0);
1331 res->Simplify(1.0);
1332 }
1333 else
1334 {
1335 res->ConvertEvenLines(1.0*o_width);
1336 res->Simplify(1.0 * o_width);
1337 }
1339 delete theShape;
1340 delete theRes;
1341 }
1343 did = true;
1345 sp_curve_unref(curve);
1346 // remember the position of the item
1347 gint pos = SP_OBJECT_REPR(item)->position();
1348 // remember parent
1349 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1350 // remember id
1351 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1353 selection->remove(item);
1354 SP_OBJECT(item)->deleteObject(false);
1356 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1358 gchar tstr[80];
1360 tstr[79] = '\0';
1362 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1363 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1365 repr->setAttribute("style", style);
1367 gchar *str = res->svg_dump_path();
1368 repr->setAttribute("d", str);
1369 g_free(str);
1371 // add the new repr to the parent
1372 parent->appendChild(repr);
1374 // move to the saved position
1375 repr->setPosition(pos > 0 ? pos : 0);
1377 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1379 // reapply the transform
1380 sp_item_write_transform(newitem, repr, transform);
1382 repr->setAttribute("id", id);
1384 selection->add(repr);
1386 Inkscape::GC::release(repr);
1387 }
1389 delete orig;
1390 delete res;
1391 }
1393 if (did) {
1394 sp_document_done(sp_desktop_document(desktop),
1395 (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1396 (expand ? _("Outset path") : _("Inset path")));
1397 } else {
1398 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1399 return;
1400 }
1401 }
1404 static bool
1405 sp_selected_path_simplify_items(SPDesktop *desktop,
1406 Inkscape::Selection *selection, GSList *items,
1407 float threshold, bool justCoalesce,
1408 float angleLimit, bool breakableAngles,
1409 bool modifySelection);
1412 //return true if we changed something, else false
1413 bool
1414 sp_selected_path_simplify_item(SPDesktop *desktop,
1415 Inkscape::Selection *selection, SPItem *item,
1416 float threshold, bool justCoalesce,
1417 float angleLimit, bool breakableAngles,
1418 gdouble size, bool modifySelection)
1419 {
1420 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1421 return false;
1423 //If this is a group, do the children instead
1424 if (SP_IS_GROUP(item)) {
1425 GSList *items = sp_item_group_item_list(SP_GROUP(item));
1427 return sp_selected_path_simplify_items(desktop, selection, items,
1428 threshold, justCoalesce,
1429 angleLimit, breakableAngles,
1430 false);
1431 }
1434 SPCurve *curve = NULL;
1436 if (SP_IS_SHAPE(item)) {
1437 curve = sp_shape_get_curve(SP_SHAPE(item));
1438 if (!curve)
1439 return false;
1440 }
1442 if (SP_IS_TEXT(item)) {
1443 curve = SP_TEXT(item)->getNormalizedBpath();
1444 if (!curve)
1445 return false;
1446 }
1448 // save the transform, to re-apply it after simplification
1449 NR::Matrix const transform(item->transform);
1451 /*
1452 reset the transform, effectively transforming the item by transform.inverse();
1453 this is necessary so that the item is transformed twice back and forth,
1454 allowing all compensations to cancel out regardless of the preferences
1455 */
1456 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1458 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1459 gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1460 gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1462 Path *orig = Path_for_item(item, false);
1463 if (orig == NULL) {
1464 g_free(style);
1465 sp_curve_unref(curve);
1466 return false;
1467 }
1469 sp_curve_unref(curve);
1470 // remember the position of the item
1471 gint pos = SP_OBJECT_REPR(item)->position();
1472 // remember parent
1473 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1474 // remember id
1475 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1477 //If a group was selected, to not change the selection list
1478 if (modifySelection)
1479 selection->remove(item);
1481 SP_OBJECT(item)->deleteObject(false);
1483 if ( justCoalesce ) {
1484 orig->Coalesce(threshold * size);
1485 } else {
1486 orig->ConvertEvenLines(threshold * size);
1487 orig->Simplify(threshold * size);
1488 }
1490 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1491 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1493 // restore style, mask and clip-path
1494 repr->setAttribute("style", style);
1495 g_free(style);
1497 if ( mask ) {
1498 repr->setAttribute("mask", mask);
1499 g_free(mask);
1500 }
1502 if ( clip_path ) {
1503 repr->setAttribute("clip-path", clip_path);
1504 g_free(clip_path);
1505 }
1507 // path
1508 gchar *str = orig->svg_dump_path();
1509 repr->setAttribute("d", str);
1510 g_free(str);
1512 // restore id
1513 repr->setAttribute("id", id);
1515 // add the new repr to the parent
1516 parent->appendChild(repr);
1518 // move to the saved position
1519 repr->setPosition(pos > 0 ? pos : 0);
1521 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1523 // reapply the transform
1524 sp_item_write_transform(newitem, repr, transform);
1526 //If we are not in a selected group
1527 if (modifySelection)
1528 selection->add(repr);
1530 Inkscape::GC::release(repr);
1532 // clean up
1533 if (orig) delete orig;
1535 return true;
1536 }
1539 bool
1540 sp_selected_path_simplify_items(SPDesktop *desktop,
1541 Inkscape::Selection *selection, GSList *items,
1542 float threshold, bool justCoalesce,
1543 float angleLimit, bool breakableAngles,
1544 bool modifySelection)
1545 {
1546 bool simplifyIndividualPaths =
1547 (bool) prefs_get_int_attribute("options.simplifyindividualpaths", "value", 0);
1549 gchar *simplificationType;
1550 if (simplifyIndividualPaths) {
1551 simplificationType = "individual paths";
1552 } else {
1553 simplificationType = "as a group";
1554 }
1556 bool didSomething = false;
1558 NR::Rect selectionBbox = selection->bounds();
1559 gdouble selectionSize = L2(selectionBbox.dimensions());
1561 gdouble simplifySize = selectionSize;
1563 int pathsSimplified = 0;
1564 int totalPathCount = g_slist_length(items);
1566 desktop->disableInteraction();
1568 for (; items != NULL; items = items->next) {
1569 SPItem *item = (SPItem *) items->data;
1571 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1572 continue;
1574 if (simplifyIndividualPaths) {
1575 NR::Rect itemBbox = item->invokeBbox(sp_item_i2d_affine(item));
1576 simplifySize = L2(itemBbox.dimensions());
1577 }
1580 pathsSimplified++;
1582 if (pathsSimplified % 20 == 0) {
1583 gchar *message = g_strdup_printf(_("Simplifying %s - <b>%d</b> of <b>%d</b> paths simplified..."), simplificationType, pathsSimplified, totalPathCount);
1584 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, message);
1585 desktop->updateCanvasNow();
1586 }
1588 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1589 threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1590 }
1592 desktop->enableInteraction();
1594 if (pathsSimplified > 20) {
1595 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("Done - <b>%d</b> paths simplified."), pathsSimplified));
1596 }
1598 return didSomething;
1599 }
1601 void
1602 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1603 float angleLimit, bool breakableAngles)
1604 {
1605 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1607 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1609 if (selection->isEmpty()) {
1610 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1611 _("Select <b>path(s)</b> to simplify."));
1612 return;
1613 }
1615 GSList *items = g_slist_copy((GSList *) selection->itemList());
1617 bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1618 items, threshold,
1619 justCoalesce,
1620 angleLimit,
1621 breakableAngles, true);
1623 if (didSomething)
1624 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1625 _("Simplify"));
1626 else
1627 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1629 }
1632 // globals for keeping track of accelerated simplify
1633 static double previousTime = 0.0;
1634 static gdouble simplifyMultiply = 1.0;
1636 void
1637 sp_selected_path_simplify(void)
1638 {
1639 gdouble simplifyThreshold =
1640 prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1641 bool simplifyJustCoalesce =
1642 (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1644 //Get the current time
1645 GTimeVal currentTimeVal;
1646 g_get_current_time(¤tTimeVal);
1647 double currentTime = currentTimeVal.tv_sec * 1000000 +
1648 currentTimeVal.tv_usec;
1650 //Was the previous call to this function recent? (<0.5 sec)
1651 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1653 // add to the threshold 1/2 of its original value
1654 simplifyMultiply += 0.5;
1655 simplifyThreshold *= simplifyMultiply;
1657 } else {
1658 // reset to the default
1659 simplifyMultiply = 1;
1660 }
1662 //remember time for next call
1663 previousTime = currentTime;
1665 //g_print("%g\n", simplify_threshold);
1667 //Make the actual call
1668 sp_selected_path_simplify_selection(simplifyThreshold,
1669 simplifyJustCoalesce, 0.0, false);
1670 }
1674 // fonctions utilitaires
1676 bool
1677 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1678 {
1679 if (who == NULL || a == NULL)
1680 return false;
1681 if (who == a)
1682 return true;
1683 return Ancetre(sp_repr_parent(a), who);
1684 }
1686 Path *
1687 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1688 {
1689 SPCurve *curve;
1691 if (!item)
1692 return NULL;
1694 if (SP_IS_SHAPE(item))
1695 {
1696 curve = sp_shape_get_curve(SP_SHAPE(item));
1697 }
1698 else if (SP_IS_TEXT(item))
1699 {
1700 curve = SP_TEXT(item)->getNormalizedBpath();
1701 }
1702 else
1703 {
1704 curve = NULL;
1705 }
1707 if (!curve)
1708 return NULL;
1709 NArtBpath *bpath = SP_CURVE_BPATH(curve);
1710 if (bpath == NULL)
1711 return NULL;
1713 if ( doTransformation ) {
1714 if (transformFull)
1715 bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), sp_item_i2doc_affine(item));
1716 else
1717 bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), item->transform);
1718 sp_curve_unref(curve);
1719 curve=NULL;
1720 } else {
1721 bpath=SP_CURVE_BPATH(curve);
1722 }
1724 Path *dest = bpath_to_Path(bpath);
1726 if ( doTransformation ) {
1727 if ( bpath ) g_free(bpath);
1728 } else {
1729 sp_curve_unref(curve);
1730 }
1731 return dest;
1732 }
1734 Path *bpath_to_Path(NArtBpath const *bpath) {
1735 Path *dest = new Path;
1736 dest->SetBackData(false);
1737 {
1738 int i;
1739 bool closed = false;
1740 float lastX = 0.0;
1741 float lastY = 0.0;
1743 for (i = 0; bpath[i].code != NR_END; i++) {
1744 switch (bpath[i].code) {
1745 case NR_LINETO:
1746 lastX = bpath[i].x3;
1747 lastY = bpath[i].y3;
1748 {
1749 NR::Point tmp(lastX, lastY);
1750 dest->LineTo(tmp);
1751 }
1752 break;
1754 case NR_CURVETO:
1755 {
1756 NR::Point tmp, tms, tme;
1757 tmp[0]=bpath[i].x3;
1758 tmp[1]=bpath[i].y3;
1759 tms[0]=3 * (bpath[i].x1 - lastX);
1760 tms[1]=3 * (bpath[i].y1 - lastY);
1761 tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1762 tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1763 dest->CubicTo(tmp,tms,tme);
1764 }
1765 lastX = bpath[i].x3;
1766 lastY = bpath[i].y3;
1767 break;
1769 case NR_MOVETO_OPEN:
1770 case NR_MOVETO:
1771 if (closed)
1772 dest->Close();
1773 closed = (bpath[i].code == NR_MOVETO);
1774 lastX = bpath[i].x3;
1775 lastY = bpath[i].y3;
1776 {
1777 NR::Point tmp(lastX, lastY);
1778 dest->MoveTo(tmp);
1779 }
1780 break;
1781 default:
1782 break;
1783 }
1784 }
1785 if (closed)
1786 dest->Close();
1787 }
1788 return dest;
1789 }
1791 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p)
1792 {
1793 //get nearest position on path
1794 Path::cut_position pos = path->PointToCurvilignPosition(p);
1795 return pos;
1796 }
1798 NR::Point get_point_on_Path(Path *path, int piece, double t)
1799 {
1800 NR::Point p;
1801 path->PointAt(piece, t, p);
1802 return p;
1803 }
1806 /*
1807 Local Variables:
1808 mode:c++
1809 c-file-style:"stroustrup"
1810 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1811 indent-tabs-mode:nil
1812 fill-column:99
1813 End:
1814 */
1815 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :