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 "sp-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 if (g_slist_length(il) < 2 && bop != bool_op_union) {
110 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
111 return;
112 }
114 if (g_slist_length(il) > 2) {
115 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
116 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
117 return;
118 }
119 }
121 // reverseOrderForOp marks whether the order of the list is the top->down order
122 // it's only used when there are 2 objects, and for operations who need to know the
123 // topmost object (differences, cuts)
124 bool reverseOrderForOp = false;
126 // mettre les elements de la liste dans l'ordre pour ces operations
127 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
128 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
129 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
130 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
132 if (a == NULL || b == NULL) {
133 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."));
134 return;
135 }
137 if (Ancetre(a, b)) {
138 // a is the parent of b, already in the proper order
139 } else if (Ancetre(b, a)) {
140 // reverse order
141 reverseOrderForOp = true;
142 } else {
144 // objects are not in parent/child relationship;
145 // find their lowest common ancestor
146 Inkscape::XML::Node *dad = LCA(a, b);
147 if (dad == 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 // find the children of the LCA that lead from it to the a and b
153 Inkscape::XML::Node *as = AncetreFils(a, dad);
154 Inkscape::XML::Node *bs = AncetreFils(b, dad);
156 // find out which comes first
157 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
158 if (child == as) {
159 /* a first, so reverse. */
160 reverseOrderForOp = true;
161 break;
162 }
163 if (child == bs)
164 break;
165 }
166 }
167 }
169 il = g_slist_copy(il);
171 // first check if all the input objects have shapes
172 // otherwise bail out
173 for (GSList *l = il; l != NULL; l = l->next)
174 {
175 SPItem *item = SP_ITEM(l->data);
176 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
177 {
178 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
179 g_slist_free(il);
180 return;
181 }
182 }
184 // extract the livarot Paths from the source objects
185 // also get the winding rule specified in the style
186 int nbOriginaux = g_slist_length(il);
187 std::vector<Path *> originaux(nbOriginaux);
188 std::vector<FillRule> origWind(nbOriginaux);
189 int curOrig;
190 {
191 curOrig = 0;
192 for (GSList *l = il; l != NULL; l = l->next)
193 {
194 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
195 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
196 if (val && strcmp(val, "nonzero") == 0) {
197 origWind[curOrig]= fill_nonZero;
198 } else if (val && strcmp(val, "evenodd") == 0) {
199 origWind[curOrig]= fill_oddEven;
200 } else {
201 origWind[curOrig]= fill_nonZero;
202 }
204 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
205 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
206 {
207 for (int i = curOrig; i >= 0; i--) delete originaux[i];
208 g_slist_free(il);
209 return;
210 }
211 curOrig++;
212 }
213 }
214 // reverse if needed
215 // note that the selection list keeps its order
216 if ( reverseOrderForOp ) {
217 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
218 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
219 }
221 // and work
222 // some temporary instances, first
223 Shape *theShapeA = new Shape;
224 Shape *theShapeB = new Shape;
225 Shape *theShape = new Shape;
226 Path *res = new Path;
227 res->SetBackData(false);
228 Path::cut_position *toCut=NULL;
229 int nbToCut=0;
231 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
232 // true boolean op
233 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
234 originaux[0]->ConvertWithBackData(0.1);
236 originaux[0]->Fill(theShape, 0);
238 theShapeA->ConvertToShape(theShape, origWind[0]);
240 curOrig = 1;
241 for (GSList *l = il->next; l != NULL; l = l->next) {
242 originaux[curOrig]->ConvertWithBackData(0.1);
244 originaux[curOrig]->Fill(theShape, curOrig);
246 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
248 // les elements arrivent en ordre inverse dans la liste
249 theShape->Booleen(theShapeB, theShapeA, bop);
251 {
252 Shape *swap = theShape;
253 theShape = theShapeA;
254 theShapeA = swap;
255 }
256 curOrig++;
257 }
259 {
260 Shape *swap = theShape;
261 theShape = theShapeA;
262 theShapeA = swap;
263 }
265 } else if ( bop == bool_op_cut ) {
266 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
267 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
268 // it is just uncrossed, and cleaned from duplicate edges and points
269 // then it's fed to Booleen() which will uncross it against the other path
270 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
271 // thus making a polygon. the weight of the edges of the cut are all 0, but
272 // the Booleen need to invert the ones inside the source polygon (for the subsequent
273 // ConvertToForme)
275 // the cut path needs to have the highest pathID in the back data
276 // that's how the Booleen() function knows it's an edge of the cut
278 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
279 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
280 // left it at 1.0. Investigate replacing this by a combination of difference and
281 // intersection of the same two paths. -- bb
282 {
283 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
284 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
285 }
286 originaux[0]->ConvertWithBackData(1.0);
288 originaux[0]->Fill(theShape, 0);
290 theShapeA->ConvertToShape(theShape, origWind[0]);
292 originaux[1]->ConvertWithBackData(1.0);
294 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
296 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
298 // les elements arrivent en ordre inverse dans la liste
299 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
301 } else if ( bop == bool_op_slice ) {
302 // slice is not really a boolean operation
303 // you just put the 2 shapes in a single polygon, uncross it
304 // the points where the degree is > 2 are intersections
305 // just check it's an intersection on the path you want to cut, and keep it
306 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
307 // make new subpath at each one of these positions
308 // inversion pour l'op\8eration
309 {
310 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
311 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
312 }
313 originaux[0]->ConvertWithBackData(1.0);
315 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
317 originaux[1]->ConvertWithBackData(1.0);
319 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
321 theShape->ConvertToShape(theShapeA, fill_justDont);
323 if ( theShape->hasBackData() ) {
324 // should always be the case, but ya never know
325 {
326 for (int i = 0; i < theShape->numberOfPoints(); i++) {
327 if ( theShape->getPoint(i).totalDegree() > 2 ) {
328 // possibly an intersection
329 // we need to check that at least one edge from the source path is incident to it
330 // before we declare it's an intersection
331 int cb = theShape->getPoint(i).incidentEdge[FIRST];
332 int nbOrig=0;
333 int nbOther=0;
334 int piece=-1;
335 float t=0.0;
336 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
337 if ( theShape->ebData[cb].pathID == 0 ) {
338 // the source has an edge incident to the point, get its position on the path
339 piece=theShape->ebData[cb].pieceID;
340 if ( theShape->getEdge(cb).st == i ) {
341 t=theShape->ebData[cb].tSt;
342 } else {
343 t=theShape->ebData[cb].tEn;
344 }
345 nbOrig++;
346 }
347 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
348 cb=theShape->NextAt(i, cb);
349 }
350 if ( nbOrig > 0 && nbOther > 0 ) {
351 // point incident to both path and cut: an intersection
352 // note that you only keep one position on the source; you could have degenerate
353 // cases where the source crosses itself at this point, and you wouyld miss an intersection
354 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
355 toCut[nbToCut].piece=piece;
356 toCut[nbToCut].t=t;
357 nbToCut++;
358 }
359 }
360 }
361 }
362 {
363 // i think it's useless now
364 int i = theShape->numberOfEdges() - 1;
365 for (;i>=0;i--) {
366 if ( theShape->ebData[i].pathID == 1 ) {
367 theShape->SubEdge(i);
368 }
369 }
370 }
372 }
373 }
375 int* nesting=NULL;
376 int* conts=NULL;
377 int nbNest=0;
378 // pour compenser le swap juste avant
379 if ( bop == bool_op_slice ) {
380 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
381 // res->ConvertForcedToMoveTo();
382 res->Copy(originaux[0]);
383 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
384 free(toCut);
385 } else if ( bop == bool_op_cut ) {
386 // il faut appeler pour desallouer PointData (pas vital, mais bon)
387 // the Booleen() function did not deallocated the point_data array in theShape, because this
388 // function needs it.
389 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
390 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
391 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
392 } else {
393 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
394 }
396 delete theShape;
397 delete theShapeA;
398 delete theShapeB;
399 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
401 if (res->descr_cmd.size() <= 1)
402 {
403 // only one command, presumably a moveto: it isn't a path
404 for (GSList *l = il; l != NULL; l = l->next)
405 {
406 SP_OBJECT(l->data)->deleteObject();
407 }
408 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
409 description);
410 selection->clear();
412 delete res;
413 g_slist_free(il);
414 return;
415 }
417 // remember important aspects of the source path, to be restored
418 Inkscape::XML::Node *repr_source;
419 if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
420 if (reverseOrderForOp) {
421 repr_source = SP_OBJECT_REPR(il->data);
422 } else {
423 repr_source = SP_OBJECT_REPR(il->next->data);
424 }
425 } else {
426 // find out the bottom object
427 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
429 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
430 repr_source = ((Inkscape::XML::Node *) sorted->data);
431 g_slist_free(sorted);
432 }
433 gint pos = repr_source->position();
434 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
435 gchar const *id = repr_source->attribute("id");
436 gchar const *style = repr_source->attribute("style");
437 gchar const *mask = repr_source->attribute("mask");
438 gchar const *clip_path = repr_source->attribute("clip-path");
441 // remove source paths
442 selection->clear();
443 for (GSList *l = il; l != NULL; l = l->next) {
444 // if this is the bottommost object,
445 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
446 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
447 SP_OBJECT(l->data)->deleteObject(false);
448 } else {
449 // delete the object for real, so that its clones can take appropriate action
450 SP_OBJECT(l->data)->deleteObject();
451 }
452 }
453 g_slist_free(il);
455 // premultiply by the inverse of parent's repr
456 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
457 NR::Matrix local = sp_item_i2doc_affine(parent_item);
458 gchar affinestr[80];
459 gchar *transform = NULL;
460 if (!local.test_identity() && sp_svg_transform_write(affinestr, 79, local.inverse())) {
461 transform = affinestr;
462 }
464 // now that we have the result, add it on the canvas
465 if ( bop == bool_op_cut || bop == bool_op_slice ) {
466 int nbRP=0;
467 Path** resPath;
468 if ( bop == bool_op_slice ) {
469 // there are moveto's at each intersection, but it's still one unique path
470 // so break it down and add each subpath independently
471 // we could call break_apart to do this, but while we have the description...
472 resPath=res->SubPaths(nbRP, false);
473 } else {
474 // cut operation is a bit wicked: you need to keep holes
475 // that's why you needed the nesting
476 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
477 // to get the path for each part of the polygon. that's why you need the nesting info:
478 // to know in wich subpath to add a subpath
479 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
481 // cleaning
482 if ( conts ) free(conts);
483 if ( nesting ) free(nesting);
484 }
486 // add all the pieces resulting from cut or slice
487 for (int i=0;i<nbRP;i++) {
488 gchar *d = resPath[i]->svg_dump_path();
490 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
491 repr->setAttribute("style", style);
492 if (mask)
493 repr->setAttribute("mask", mask);
494 if (clip_path)
495 repr->setAttribute("clip-path", clip_path);
497 repr->setAttribute("d", d);
498 g_free(d);
500 // for slice, remove fill
501 if (bop == bool_op_slice) {
502 SPCSSAttr *css;
504 css = sp_repr_css_attr_new();
505 sp_repr_css_set_property(css, "fill", "none");
507 sp_repr_css_change(repr, css, "style");
509 sp_repr_css_attr_unref(css);
510 }
512 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
513 // this means it's basically random which of the pieces inherits the original's id and clones
514 // a better algorithm might figure out e.g. the biggest piece
515 repr->setAttribute("id", id);
517 repr->setAttribute("transform", transform);
519 // add the new repr to the parent
520 parent->appendChild(repr);
522 // move to the saved position
523 repr->setPosition(pos > 0 ? pos : 0);
525 selection->add(repr);
526 Inkscape::GC::release(repr);
528 delete resPath[i];
529 }
530 if ( resPath ) free(resPath);
532 } else {
533 gchar *d = res->svg_dump_path();
535 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
536 repr->setAttribute("style", style);
538 if ( mask )
539 repr->setAttribute("mask", mask);
541 if ( clip_path )
542 repr->setAttribute("clip-path", clip_path);
544 repr->setAttribute("d", d);
545 g_free(d);
547 repr->setAttribute("transform", transform);
549 repr->setAttribute("id", id);
550 parent->appendChild(repr);
551 repr->setPosition(pos > 0 ? pos : 0);
553 selection->add(repr);
554 Inkscape::GC::release(repr);
555 }
557 sp_document_done(sp_desktop_document(desktop), verb, description);
559 delete res;
560 }
563 void
564 sp_selected_path_outline()
565 {
566 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
568 Inkscape::Selection *selection = sp_desktop_selection(desktop);
570 if (selection->isEmpty()) {
571 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
572 return;
573 }
575 bool did = false;
577 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
578 items != NULL;
579 items = items->next) {
581 SPItem *item = (SPItem *) items->data;
583 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
584 continue;
586 SPCurve *curve = NULL;
587 if (SP_IS_SHAPE(item)) {
588 curve = sp_shape_get_curve(SP_SHAPE(item));
589 if (curve == NULL)
590 continue;
591 }
592 if (SP_IS_TEXT(item)) {
593 curve = SP_TEXT(item)->getNormalizedBpath();
594 if (curve == NULL)
595 continue;
596 }
598 { // pas de stroke pas de chocolat
599 SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
600 gchar const *val = sp_repr_css_property(css, "stroke", NULL);
602 if (val == NULL || strcmp(val, "none") == 0) {
603 sp_curve_unref(curve);
604 continue;
605 }
606 }
608 // remember old stroke style, to be set on fill
609 SPCSSAttr *ncss;
610 {
611 SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
612 gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
613 gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
615 ncss = sp_repr_css_attr_new();
617 sp_repr_css_set_property(ncss, "stroke", "none");
618 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
619 sp_repr_css_set_property(ncss, "fill", val);
620 if ( opac ) {
621 sp_repr_css_set_property(ncss, "fill-opacity", opac);
622 } else {
623 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
624 }
625 sp_repr_css_unset_property(ncss, "marker-start");
626 sp_repr_css_unset_property(ncss, "marker-mid");
627 sp_repr_css_unset_property(ncss, "marker-end");
628 }
630 NR::Matrix const transform(item->transform);
631 float const scale = transform.expansion();
632 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
633 SPStyle *i_style = SP_OBJECT(item)->style;
634 gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
635 gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
637 float o_width, o_miter;
638 JoinType o_join;
639 ButtType o_butt;
641 {
642 int jointype, captype;
644 jointype = i_style->stroke_linejoin.computed;
645 captype = i_style->stroke_linecap.computed;
646 o_width = i_style->stroke_width.computed;
648 switch (jointype) {
649 case SP_STROKE_LINEJOIN_MITER:
650 o_join = join_pointy;
651 break;
652 case SP_STROKE_LINEJOIN_ROUND:
653 o_join = join_round;
654 break;
655 default:
656 o_join = join_straight;
657 break;
658 }
660 switch (captype) {
661 case SP_STROKE_LINECAP_SQUARE:
662 o_butt = butt_square;
663 break;
664 case SP_STROKE_LINECAP_ROUND:
665 o_butt = butt_round;
666 break;
667 default:
668 o_butt = butt_straight;
669 break;
670 }
672 if (o_width < 0.1)
673 o_width = 0.1;
674 o_miter = i_style->stroke_miterlimit.value * o_width;
675 }
677 Path *orig = Path_for_item(item, false);
678 if (orig == NULL) {
679 g_free(style);
680 sp_curve_unref(curve);
681 continue;
682 }
684 Path *res = new Path;
685 res->SetBackData(false);
687 if (i_style->stroke_dash.n_dash) {
688 // For dashed strokes, use Stroke method, because Outline can't do dashes
689 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
691 orig->ConvertWithBackData(0.1);
693 orig->DashPolylineFromStyle(i_style, scale, 0);
695 Shape* theShape = new Shape;
696 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
697 0.5 * o_miter);
698 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
700 Shape *theRes = new Shape;
702 theRes->ConvertToShape(theShape, fill_positive);
704 Path *originaux[1];
705 originaux[0] = res;
706 theRes->ConvertToForme(orig, 1, originaux);
708 res->Coalesce(5.0);
710 delete theShape;
711 delete theRes;
713 } else {
715 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
717 orig->Coalesce(0.5 * o_width);
719 Shape *theShape = new Shape;
720 Shape *theRes = new Shape;
722 res->ConvertWithBackData(1.0);
723 res->Fill(theShape, 0);
724 theRes->ConvertToShape(theShape, fill_positive);
726 Path *originaux[1];
727 originaux[0] = res;
728 theRes->ConvertToForme(orig, 1, originaux);
730 delete theShape;
731 delete theRes;
732 }
734 if (orig->descr_cmd.size() <= 1) {
735 // ca a merd\8e, ou bien le resultat est vide
736 delete res;
737 delete orig;
738 g_free(style);
739 continue;
740 }
742 did = true;
744 // remember the position of the item
745 gint pos = SP_OBJECT_REPR(item)->position();
746 // remember parent
747 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
748 // remember id
749 char const *id = SP_OBJECT_REPR(item)->attribute("id");
751 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
753 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
755 // restore old style
756 repr->setAttribute("style", style);
758 // set old stroke style on fill
759 sp_repr_css_change(repr, ncss, "style");
761 sp_repr_css_attr_unref(ncss);
763 gchar *str = orig->svg_dump_path();
764 repr->setAttribute("d", str);
765 g_free(str);
767 if (mask)
768 repr->setAttribute("mask", mask);
769 if (clip_path)
770 repr->setAttribute("clip-path", clip_path);
772 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
774 Inkscape::XML::Node *g_repr = sp_repr_new("svg:g");
776 // add the group to the parent
777 parent->appendChild(g_repr);
778 // move to the saved position
779 g_repr->setPosition(pos > 0 ? pos : 0);
781 g_repr->appendChild(repr);
782 repr->setAttribute("id", id);
783 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
784 sp_item_write_transform(newitem, repr, transform);
786 SPShape *shape = SP_SHAPE(item);
788 for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) {
789 for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) {
790 if (sp_shape_marker_required (shape, m, bp)) {
792 SPMarker* marker = SP_MARKER (shape->marker[m]);
793 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m]));
795 NR::Matrix tr(sp_shape_marker_get_transform(shape, bp));
797 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
798 tr = NR::scale(i_style->stroke_width.computed) * tr;
799 }
801 // total marker transform
802 tr = marker_item->transform * marker->c2p * tr * transform;
804 if (SP_OBJECT_REPR(marker_item)) {
805 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate();
806 g_repr->appendChild(m_repr);
807 SPItem *marker_item = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(m_repr);
808 sp_item_write_transform(marker_item, m_repr, tr);
809 }
810 }
811 }
812 }
815 selection->add(g_repr);
817 Inkscape::GC::release(g_repr);
820 } else {
822 // add the new repr to the parent
823 parent->appendChild(repr);
825 // move to the saved position
826 repr->setPosition(pos > 0 ? pos : 0);
828 repr->setAttribute("id", id);
830 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
831 sp_item_write_transform(newitem, repr, transform);
833 selection->add(repr);
835 }
837 Inkscape::GC::release(repr);
839 sp_curve_unref(curve);
840 selection->remove(item);
841 SP_OBJECT(item)->deleteObject(false);
843 }
845 delete res;
846 delete orig;
847 g_free(style);
849 }
851 if (did) {
852 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
853 _("Convert stroke to path"));
854 } else {
855 // TRANSLATORS: "to outline" means "to convert stroke to path"
856 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
857 return;
858 }
859 }
862 void
863 sp_selected_path_offset()
864 {
865 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
867 sp_selected_path_do_offset(true, prefOffset);
868 }
869 void
870 sp_selected_path_inset()
871 {
872 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
874 sp_selected_path_do_offset(false, prefOffset);
875 }
877 void
878 sp_selected_path_offset_screen(double pixels)
879 {
880 sp_selected_path_do_offset(true, pixels / SP_ACTIVE_DESKTOP->current_zoom());
881 }
883 void
884 sp_selected_path_inset_screen(double pixels)
885 {
886 sp_selected_path_do_offset(false, pixels / SP_ACTIVE_DESKTOP->current_zoom());
887 }
890 void sp_selected_path_create_offset_object_zero()
891 {
892 sp_selected_path_create_offset_object(0, false);
893 }
895 void sp_selected_path_create_offset()
896 {
897 sp_selected_path_create_offset_object(1, false);
898 }
899 void sp_selected_path_create_inset()
900 {
901 sp_selected_path_create_offset_object(-1, false);
902 }
904 void sp_selected_path_create_updating_offset_object_zero()
905 {
906 sp_selected_path_create_offset_object(0, true);
907 }
909 void sp_selected_path_create_updating_offset()
910 {
911 sp_selected_path_create_offset_object(1, true);
912 }
913 void sp_selected_path_create_updating_inset()
914 {
915 sp_selected_path_create_offset_object(-1, true);
916 }
918 void
919 sp_selected_path_create_offset_object(int expand, bool updating)
920 {
921 Inkscape::Selection *selection;
922 Inkscape::XML::Node *repr;
923 SPItem *item;
924 SPCurve *curve;
925 gchar *style, *str;
926 SPDesktop *desktop;
927 float o_width, o_miter;
928 JoinType o_join;
929 ButtType o_butt;
931 curve = NULL;
933 desktop = SP_ACTIVE_DESKTOP;
935 selection = sp_desktop_selection(desktop);
937 item = selection->singleItem();
939 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
940 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
941 return;
942 }
943 if (SP_IS_SHAPE(item))
944 {
945 curve = sp_shape_get_curve(SP_SHAPE(item));
946 if (curve == NULL)
947 return;
948 }
949 if (SP_IS_TEXT(item))
950 {
951 curve = SP_TEXT(item)->getNormalizedBpath();
952 if (curve == NULL)
953 return;
954 }
956 NR::Matrix const transform(item->transform);
958 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
960 style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
962 // remember the position of the item
963 gint pos = SP_OBJECT_REPR(item)->position();
964 // remember parent
965 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
967 {
968 SPStyle *i_style = SP_OBJECT(item)->style;
969 int jointype, captype;
971 jointype = i_style->stroke_linejoin.value;
972 captype = i_style->stroke_linecap.value;
973 o_width = i_style->stroke_width.computed;
974 if (jointype == SP_STROKE_LINEJOIN_MITER)
975 {
976 o_join = join_pointy;
977 }
978 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
979 {
980 o_join = join_round;
981 }
982 else
983 {
984 o_join = join_straight;
985 }
986 if (captype == SP_STROKE_LINECAP_SQUARE)
987 {
988 o_butt = butt_square;
989 }
990 else if (captype == SP_STROKE_LINECAP_ROUND)
991 {
992 o_butt = butt_round;
993 }
994 else
995 {
996 o_butt = butt_straight;
997 }
999 {
1000 double prefOffset = 1.0;
1001 prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
1002 o_width = prefOffset;
1003 }
1005 if (o_width < 0.01)
1006 o_width = 0.01;
1007 o_miter = i_style->stroke_miterlimit.value * o_width;
1008 }
1010 Path *orig = Path_for_item(item, true, false);
1011 if (orig == NULL)
1012 {
1013 g_free(style);
1014 sp_curve_unref(curve);
1015 return;
1016 }
1018 Path *res = new Path;
1019 res->SetBackData(false);
1021 {
1022 Shape *theShape = new Shape;
1023 Shape *theRes = new Shape;
1025 orig->ConvertWithBackData(1.0);
1026 orig->Fill(theShape, 0);
1028 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1029 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1030 if (val && strcmp(val, "nonzero") == 0)
1031 {
1032 theRes->ConvertToShape(theShape, fill_nonZero);
1033 }
1034 else if (val && strcmp(val, "evenodd") == 0)
1035 {
1036 theRes->ConvertToShape(theShape, fill_oddEven);
1037 }
1038 else
1039 {
1040 theRes->ConvertToShape(theShape, fill_nonZero);
1041 }
1043 Path *originaux[1];
1044 originaux[0] = orig;
1045 theRes->ConvertToForme(res, 1, originaux);
1047 delete theShape;
1048 delete theRes;
1049 }
1051 sp_curve_unref(curve);
1053 if (res->descr_cmd.size() <= 1)
1054 {
1055 // pas vraiment de points sur le resultat
1056 // donc il ne reste rien
1057 sp_document_done(sp_desktop_document(desktop),
1058 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1059 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1060 (updating ? _("Create linked offset")
1061 : _("Create dynamic offset")));
1062 selection->clear();
1064 delete res;
1065 delete orig;
1066 g_free(style);
1067 return;
1068 }
1070 {
1071 gchar tstr[80];
1073 tstr[79] = '\0';
1075 repr = sp_repr_new("svg:path");
1076 repr->setAttribute("sodipodi:type", "inkscape:offset");
1077 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1078 ? o_width
1079 : expand < 0
1080 ? -o_width
1081 : 0 ));
1083 str = res->svg_dump_path();
1084 repr->setAttribute("inkscape:original", str);
1085 g_free(str);
1087 if ( updating ) {
1088 char const *id = SP_OBJECT(item)->repr->attribute("id");
1089 char const *uri = g_strdup_printf("#%s", id);
1090 repr->setAttribute("xlink:href", uri);
1091 g_free((void *) uri);
1092 } else {
1093 repr->setAttribute("inkscape:href", NULL);
1094 }
1096 repr->setAttribute("style", style);
1098 // add the new repr to the parent
1099 parent->appendChild(repr);
1101 // move to the saved position
1102 repr->setPosition(pos > 0 ? pos : 0);
1104 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1106 if ( updating ) {
1107 // on conserve l'original
1108 // we reapply the transform to the original (offset will feel it)
1109 sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1110 } else {
1111 // delete original, apply the transform to the offset
1112 SP_OBJECT(item)->deleteObject(false);
1113 sp_item_write_transform(nitem, repr, transform);
1114 }
1116 // The object just created from a temporary repr is only a seed.
1117 // We need to invoke its write which will update its real repr (in particular adding d=)
1118 SP_OBJECT(nitem)->updateRepr();
1120 Inkscape::GC::release(repr);
1122 selection->set(nitem);
1123 }
1125 sp_document_done(sp_desktop_document(desktop),
1126 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1127 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1128 (updating ? _("Create linked offset")
1129 : _("Create dynamic offset")));
1131 delete res;
1132 delete orig;
1134 g_free(style);
1135 }
1148 void
1149 sp_selected_path_do_offset(bool expand, double prefOffset)
1150 {
1151 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1153 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1155 if (selection->isEmpty()) {
1156 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1157 return;
1158 }
1160 bool did = false;
1162 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1163 items != NULL;
1164 items = items->next) {
1166 SPItem *item = (SPItem *) items->data;
1168 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1169 continue;
1171 SPCurve *curve = NULL;
1172 if (SP_IS_SHAPE(item)) {
1173 curve = sp_shape_get_curve(SP_SHAPE(item));
1174 if (curve == NULL)
1175 continue;
1176 }
1177 if (SP_IS_TEXT(item)) {
1178 curve = SP_TEXT(item)->getNormalizedBpath();
1179 if (curve == NULL)
1180 continue;
1181 }
1183 NR::Matrix const transform(item->transform);
1185 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1187 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1189 float o_width, o_miter;
1190 JoinType o_join;
1191 ButtType o_butt;
1193 {
1194 SPStyle *i_style = SP_OBJECT(item)->style;
1195 int jointype, captype;
1197 jointype = i_style->stroke_linejoin.value;
1198 captype = i_style->stroke_linecap.value;
1199 o_width = i_style->stroke_width.computed;
1201 switch (jointype) {
1202 case SP_STROKE_LINEJOIN_MITER:
1203 o_join = join_pointy;
1204 break;
1205 case SP_STROKE_LINEJOIN_ROUND:
1206 o_join = join_round;
1207 break;
1208 default:
1209 o_join = join_straight;
1210 break;
1211 }
1213 switch (captype) {
1214 case SP_STROKE_LINECAP_SQUARE:
1215 o_butt = butt_square;
1216 break;
1217 case SP_STROKE_LINECAP_ROUND:
1218 o_butt = butt_round;
1219 break;
1220 default:
1221 o_butt = butt_straight;
1222 break;
1223 }
1225 o_width = prefOffset;
1227 if (o_width < 0.1)
1228 o_width = 0.1;
1229 o_miter = i_style->stroke_miterlimit.value * o_width;
1230 }
1232 Path *orig = Path_for_item(item, false);
1233 if (orig == NULL) {
1234 g_free(style);
1235 sp_curve_unref(curve);
1236 continue;
1237 }
1239 Path *res = new Path;
1240 res->SetBackData(false);
1242 {
1243 Shape *theShape = new Shape;
1244 Shape *theRes = new Shape;
1246 orig->ConvertWithBackData(0.03);
1247 orig->Fill(theShape, 0);
1249 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1250 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1251 if (val && strcmp(val, "nonzero") == 0)
1252 {
1253 theRes->ConvertToShape(theShape, fill_nonZero);
1254 }
1255 else if (val && strcmp(val, "evenodd") == 0)
1256 {
1257 theRes->ConvertToShape(theShape, fill_oddEven);
1258 }
1259 else
1260 {
1261 theRes->ConvertToShape(theShape, fill_nonZero);
1262 }
1264 // et maintenant: offset
1265 // methode inexacte
1266 /* Path *originaux[1];
1267 originaux[0] = orig;
1268 theRes->ConvertToForme(res, 1, originaux);
1270 if (expand) {
1271 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1272 } else {
1273 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1274 }
1276 orig->ConvertWithBackData(1.0);
1277 orig->Fill(theShape, 0);
1278 theRes->ConvertToShape(theShape, fill_positive);
1279 originaux[0] = orig;
1280 theRes->ConvertToForme(res, 1, originaux);
1282 if (o_width >= 0.5) {
1283 // res->Coalesce(1.0);
1284 res->ConvertEvenLines(1.0);
1285 res->Simplify(1.0);
1286 } else {
1287 // res->Coalesce(o_width);
1288 res->ConvertEvenLines(1.0*o_width);
1289 res->Simplify(1.0 * o_width);
1290 } */
1291 // methode par makeoffset
1293 if (expand)
1294 {
1295 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1296 }
1297 else
1298 {
1299 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1300 }
1301 theRes->ConvertToShape(theShape, fill_positive);
1303 res->Reset();
1304 theRes->ConvertToForme(res);
1306 if (o_width >= 1.0)
1307 {
1308 res->ConvertEvenLines(1.0);
1309 res->Simplify(1.0);
1310 }
1311 else
1312 {
1313 res->ConvertEvenLines(1.0*o_width);
1314 res->Simplify(1.0 * o_width);
1315 }
1317 delete theShape;
1318 delete theRes;
1319 }
1321 did = true;
1323 sp_curve_unref(curve);
1324 // remember the position of the item
1325 gint pos = SP_OBJECT_REPR(item)->position();
1326 // remember parent
1327 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1328 // remember id
1329 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1331 selection->remove(item);
1332 SP_OBJECT(item)->deleteObject(false);
1334 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1336 gchar tstr[80];
1338 tstr[79] = '\0';
1340 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1342 repr->setAttribute("style", style);
1344 gchar *str = res->svg_dump_path();
1345 repr->setAttribute("d", str);
1346 g_free(str);
1348 // add the new repr to the parent
1349 parent->appendChild(repr);
1351 // move to the saved position
1352 repr->setPosition(pos > 0 ? pos : 0);
1354 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1356 // reapply the transform
1357 sp_item_write_transform(newitem, repr, transform);
1359 repr->setAttribute("id", id);
1361 selection->add(repr);
1363 Inkscape::GC::release(repr);
1364 }
1366 delete orig;
1367 delete res;
1368 }
1370 if (did) {
1371 sp_document_done(sp_desktop_document(desktop),
1372 (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1373 (expand ? _("Outset path") : _("Inset path")));
1374 } else {
1375 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1376 return;
1377 }
1378 }
1381 static bool
1382 sp_selected_path_simplify_items(SPDesktop *desktop,
1383 Inkscape::Selection *selection, GSList *items,
1384 float threshold, bool justCoalesce,
1385 float angleLimit, bool breakableAngles,
1386 bool modifySelection);
1389 //return true if we changed something, else false
1390 bool
1391 sp_selected_path_simplify_item(SPDesktop *desktop,
1392 Inkscape::Selection *selection, SPItem *item,
1393 float threshold, bool justCoalesce,
1394 float angleLimit, bool breakableAngles,
1395 gdouble size, bool modifySelection)
1396 {
1397 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1398 return false;
1400 //If this is a group, do the children instead
1401 if (SP_IS_GROUP(item)) {
1402 GSList *items = sp_item_group_item_list(SP_GROUP(item));
1404 return sp_selected_path_simplify_items(desktop, selection, items,
1405 threshold, justCoalesce,
1406 angleLimit, breakableAngles,
1407 false);
1408 }
1411 SPCurve *curve = NULL;
1413 if (SP_IS_SHAPE(item)) {
1414 curve = sp_shape_get_curve(SP_SHAPE(item));
1415 if (!curve)
1416 return false;
1417 }
1419 if (SP_IS_TEXT(item)) {
1420 curve = SP_TEXT(item)->getNormalizedBpath();
1421 if (!curve)
1422 return false;
1423 }
1425 // save the transform, to re-apply it after simplification
1426 NR::Matrix const transform(item->transform);
1428 /*
1429 reset the transform, effectively transforming the item by transform.inverse();
1430 this is necessary so that the item is transformed twice back and forth,
1431 allowing all compensations to cancel out regardless of the preferences
1432 */
1433 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1435 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1436 gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1437 gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1439 Path *orig = Path_for_item(item, false);
1440 if (orig == NULL) {
1441 g_free(style);
1442 sp_curve_unref(curve);
1443 return false;
1444 }
1446 sp_curve_unref(curve);
1447 // remember the position of the item
1448 gint pos = SP_OBJECT_REPR(item)->position();
1449 // remember parent
1450 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1451 // remember id
1452 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1454 //If a group was selected, to not change the selection list
1455 if (modifySelection)
1456 selection->remove(item);
1458 SP_OBJECT(item)->deleteObject(false);
1460 if ( justCoalesce ) {
1461 orig->Coalesce(threshold * size);
1462 } else {
1463 orig->ConvertEvenLines(threshold * size);
1464 orig->Simplify(threshold * size);
1465 }
1467 Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1469 // restore style, mask and clip-path
1470 repr->setAttribute("style", style);
1471 g_free(style);
1473 if ( mask ) {
1474 repr->setAttribute("mask", mask);
1475 g_free(mask);
1476 }
1478 if ( clip_path ) {
1479 repr->setAttribute("clip-path", clip_path);
1480 g_free(clip_path);
1481 }
1483 // path
1484 gchar *str = orig->svg_dump_path();
1485 repr->setAttribute("d", str);
1486 g_free(str);
1488 // restore id
1489 repr->setAttribute("id", id);
1491 // add the new repr to the parent
1492 parent->appendChild(repr);
1494 // move to the saved position
1495 repr->setPosition(pos > 0 ? pos : 0);
1497 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1499 // reapply the transform
1500 sp_item_write_transform(newitem, repr, transform);
1502 //If we are not in a selected group
1503 if (modifySelection)
1504 selection->add(repr);
1506 Inkscape::GC::release(repr);
1508 // clean up
1509 if (orig) delete orig;
1511 return true;
1512 }
1515 bool
1516 sp_selected_path_simplify_items(SPDesktop *desktop,
1517 Inkscape::Selection *selection, GSList *items,
1518 float threshold, bool justCoalesce,
1519 float angleLimit, bool breakableAngles,
1520 bool modifySelection)
1521 {
1522 bool simplifyIndividualPaths =
1523 (bool) prefs_get_int_attribute("options.simplifyindividualpaths", "value", 0);
1525 gchar *simplificationType;
1526 if (simplifyIndividualPaths) {
1527 simplificationType = "individual paths";
1528 } else {
1529 simplificationType = "as a group";
1530 }
1532 bool didSomething = false;
1534 NR::Rect selectionBbox = selection->bounds();
1535 gdouble selectionSize = L2(selectionBbox.dimensions());
1537 gdouble simplifySize = selectionSize;
1539 int pathsSimplified = 0;
1540 int totalPathCount = g_slist_length(items);
1542 desktop->disableInteraction();
1544 for (; items != NULL; items = items->next) {
1545 SPItem *item = (SPItem *) items->data;
1547 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1548 continue;
1550 if (simplifyIndividualPaths) {
1551 NR::Rect itemBbox = item->invokeBbox(sp_item_i2d_affine(item));
1552 simplifySize = L2(itemBbox.dimensions());
1553 }
1556 pathsSimplified++;
1558 if (pathsSimplified % 20 == 0) {
1559 gchar *message = g_strdup_printf(_("Simplifying %s - <b>%d</b> of <b>%d</b> paths simplified..."), simplificationType, pathsSimplified, totalPathCount);
1560 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, message);
1561 desktop->updateCanvasNow();
1562 }
1564 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1565 threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1566 }
1568 desktop->enableInteraction();
1570 if (pathsSimplified > 20) {
1571 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("Done - <b>%d</b> paths simplified."), pathsSimplified));
1572 }
1574 return didSomething;
1575 }
1577 void
1578 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1579 float angleLimit, bool breakableAngles)
1580 {
1581 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1583 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1585 if (selection->isEmpty()) {
1586 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1587 _("Select <b>path(s)</b> to simplify."));
1588 return;
1589 }
1591 GSList *items = g_slist_copy((GSList *) selection->itemList());
1593 bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1594 items, threshold,
1595 justCoalesce,
1596 angleLimit,
1597 breakableAngles, true);
1599 if (didSomething)
1600 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1601 _("Simplify"));
1602 else
1603 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1605 }
1608 // globals for keeping track of accelerated simplify
1609 static double previousTime = 0.0;
1610 static gdouble simplifyMultiply = 1.0;
1612 void
1613 sp_selected_path_simplify(void)
1614 {
1615 gdouble simplifyThreshold =
1616 prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1617 bool simplifyJustCoalesce =
1618 (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1620 //Get the current time
1621 GTimeVal currentTimeVal;
1622 g_get_current_time(¤tTimeVal);
1623 double currentTime = currentTimeVal.tv_sec * 1000000 +
1624 currentTimeVal.tv_usec;
1626 //Was the previous call to this function recent? (<0.5 sec)
1627 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1629 // add to the threshold 1/2 of its original value
1630 simplifyMultiply += 0.5;
1631 simplifyThreshold *= simplifyMultiply;
1633 } else {
1634 // reset to the default
1635 simplifyMultiply = 1;
1636 }
1638 //remember time for next call
1639 previousTime = currentTime;
1641 //g_print("%g\n", simplify_threshold);
1643 //Make the actual call
1644 sp_selected_path_simplify_selection(simplifyThreshold,
1645 simplifyJustCoalesce, 0.0, false);
1646 }
1650 // fonctions utilitaires
1652 bool
1653 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1654 {
1655 if (who == NULL || a == NULL)
1656 return false;
1657 if (who == a)
1658 return true;
1659 return Ancetre(sp_repr_parent(a), who);
1660 }
1662 Path *
1663 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1664 {
1665 SPCurve *curve;
1667 if (!item)
1668 return NULL;
1670 if (SP_IS_SHAPE(item))
1671 {
1672 curve = sp_shape_get_curve(SP_SHAPE(item));
1673 }
1674 else if (SP_IS_TEXT(item))
1675 {
1676 curve = SP_TEXT(item)->getNormalizedBpath();
1677 }
1678 else
1679 {
1680 curve = NULL;
1681 }
1683 if (!curve)
1684 return NULL;
1685 NArtBpath *bpath = SP_CURVE_BPATH(curve);
1686 if (bpath == NULL)
1687 return NULL;
1689 if ( doTransformation ) {
1690 if (transformFull)
1691 bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), sp_item_i2doc_affine(item));
1692 else
1693 bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), item->transform);
1694 sp_curve_unref(curve);
1695 curve=NULL;
1696 } else {
1697 bpath=SP_CURVE_BPATH(curve);
1698 }
1700 Path *dest = new Path;
1701 dest->SetBackData(false);
1702 {
1703 int i;
1704 bool closed = false;
1705 float lastX = 0.0;
1706 float lastY = 0.0;
1708 for (i = 0; bpath[i].code != NR_END; i++) {
1709 switch (bpath[i].code) {
1710 case NR_LINETO:
1711 lastX = bpath[i].x3;
1712 lastY = bpath[i].y3;
1713 {
1714 NR::Point tmp(lastX, lastY);
1715 dest->LineTo(tmp);
1716 }
1717 break;
1719 case NR_CURVETO:
1720 {
1721 NR::Point tmp, tms, tme;
1722 tmp[0]=bpath[i].x3;
1723 tmp[1]=bpath[i].y3;
1724 tms[0]=3 * (bpath[i].x1 - lastX);
1725 tms[1]=3 * (bpath[i].y1 - lastY);
1726 tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1727 tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1728 dest->CubicTo(tmp,tms,tme);
1729 }
1730 lastX = bpath[i].x3;
1731 lastY = bpath[i].y3;
1732 break;
1734 case NR_MOVETO_OPEN:
1735 case NR_MOVETO:
1736 if (closed)
1737 dest->Close();
1738 closed = (bpath[i].code == NR_MOVETO);
1739 lastX = bpath[i].x3;
1740 lastY = bpath[i].y3;
1741 {
1742 NR::Point tmp(lastX, lastY);
1743 dest->MoveTo(tmp);
1744 }
1745 break;
1746 default:
1747 break;
1748 }
1749 }
1750 if (closed)
1751 dest->Close();
1752 }
1754 if ( doTransformation ) {
1755 if ( bpath ) g_free(bpath);
1756 } else {
1757 sp_curve_unref(curve);
1758 }
1759 return dest;
1760 }
1762 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p)
1763 {
1764 //get nearest position on path
1765 Path::cut_position pos = path->PointToCurvilignPosition(p);
1766 return pos;
1767 }
1769 NR::Point get_point_on_Path(Path *path, int piece, double t)
1770 {
1771 NR::Point p;
1772 path->PointAt(piece, t, p);
1773 return p;
1774 }
1777 /*
1778 Local Variables:
1779 mode:c++
1780 c-file-style:"stroustrup"
1781 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1782 indent-tabs-mode:nil
1783 fill-column:99
1784 End:
1785 */
1786 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :