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-image.h"
27 #include "marker.h"
28 #include "enums.h"
29 #include "sp-text.h"
30 #include "sp-flowtext.h"
31 #include "text-editing.h"
32 #include "sp-item-group.h"
33 #include "style.h"
34 #include "inkscape.h"
35 #include "document.h"
36 #include "message-stack.h"
37 #include "selection.h"
38 #include "desktop-handles.h"
39 #include "desktop.h"
40 #include "display/canvas-bpath.h"
41 #include "display/curve.h"
42 #include <glibmm/i18n.h>
43 #include "prefs-utils.h"
45 #include "libnr/n-art-bpath.h"
46 #include "libnr/nr-path.h"
47 #include "xml/repr.h"
48 #include "xml/repr-sorting.h"
50 #include <libnr/nr-matrix-fns.h>
51 #include <libnr/nr-matrix-ops.h>
52 #include <libnr/nr-matrix-translate-ops.h>
53 #include <libnr/nr-scale-matrix-ops.h>
55 #include "livarot/Path.h"
56 #include "livarot/Shape.h"
58 #include "splivarot.h"
60 bool Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
62 void sp_selected_path_boolop(bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
63 void sp_selected_path_do_offset(bool expand, double prefOffset);
64 void sp_selected_path_create_offset_object(int expand, bool updating);
66 void
67 sp_selected_path_union()
68 {
69 sp_selected_path_boolop(bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
70 }
72 void
73 sp_selected_path_union_skip_undo()
74 {
75 sp_selected_path_boolop(bool_op_union, SP_VERB_NONE, _("Union"));
76 }
78 void
79 sp_selected_path_intersect()
80 {
81 sp_selected_path_boolop(bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
82 }
84 void
85 sp_selected_path_diff()
86 {
87 sp_selected_path_boolop(bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
88 }
90 void
91 sp_selected_path_symdiff()
92 {
93 sp_selected_path_boolop(bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
94 }
95 void
96 sp_selected_path_cut()
97 {
98 sp_selected_path_boolop(bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
99 }
100 void
101 sp_selected_path_slice()
102 {
103 sp_selected_path_boolop(bool_op_slice, SP_VERB_SELECTION_SLICE, _("Cut path"));
104 }
107 // boolean operations
108 // take the source paths from the file, do the operation, delete the originals and add the results
109 void
110 sp_selected_path_boolop(bool_op bop, const unsigned int verb, const Glib::ustring description)
111 {
112 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
114 Inkscape::Selection *selection = sp_desktop_selection(desktop);
116 GSList *il = (GSList *) selection->itemList();
118 // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
119 if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
120 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
121 return;
122 }
123 else if ( g_slist_length(il) < 1 ) {
124 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
125 return;
126 }
128 if (g_slist_length(il) > 2) {
129 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
130 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
131 return;
132 }
133 }
135 // reverseOrderForOp marks whether the order of the list is the top->down order
136 // it's only used when there are 2 objects, and for operations who need to know the
137 // topmost object (differences, cuts)
138 bool reverseOrderForOp = false;
140 // mettre les elements de la liste dans l'ordre pour ces operations
141 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
142 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
143 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
144 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
146 if (a == NULL || b == NULL) {
147 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
148 return;
149 }
151 if (Ancetre(a, b)) {
152 // a is the parent of b, already in the proper order
153 } else if (Ancetre(b, a)) {
154 // reverse order
155 reverseOrderForOp = true;
156 } else {
158 // objects are not in parent/child relationship;
159 // find their lowest common ancestor
160 Inkscape::XML::Node *dad = LCA(a, b);
161 if (dad == NULL) {
162 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
163 return;
164 }
166 // find the children of the LCA that lead from it to the a and b
167 Inkscape::XML::Node *as = AncetreFils(a, dad);
168 Inkscape::XML::Node *bs = AncetreFils(b, dad);
170 // find out which comes first
171 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
172 if (child == as) {
173 /* a first, so reverse. */
174 reverseOrderForOp = true;
175 break;
176 }
177 if (child == bs)
178 break;
179 }
180 }
181 }
183 il = g_slist_copy(il);
185 // first check if all the input objects have shapes
186 // otherwise bail out
187 for (GSList *l = il; l != NULL; l = l->next)
188 {
189 SPItem *item = SP_ITEM(l->data);
190 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
191 {
192 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
193 g_slist_free(il);
194 return;
195 }
196 }
198 // extract the livarot Paths from the source objects
199 // also get the winding rule specified in the style
200 int nbOriginaux = g_slist_length(il);
201 std::vector<Path *> originaux(nbOriginaux);
202 std::vector<FillRule> origWind(nbOriginaux);
203 int curOrig;
204 {
205 curOrig = 0;
206 for (GSList *l = il; l != NULL; l = l->next)
207 {
208 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
209 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
210 if (val && strcmp(val, "nonzero") == 0) {
211 origWind[curOrig]= fill_nonZero;
212 } else if (val && strcmp(val, "evenodd") == 0) {
213 origWind[curOrig]= fill_oddEven;
214 } else {
215 origWind[curOrig]= fill_nonZero;
216 }
218 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
219 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
220 {
221 for (int i = curOrig; i >= 0; i--) delete originaux[i];
222 g_slist_free(il);
223 return;
224 }
225 curOrig++;
226 }
227 }
228 // reverse if needed
229 // note that the selection list keeps its order
230 if ( reverseOrderForOp ) {
231 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
232 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
233 }
235 // and work
236 // some temporary instances, first
237 Shape *theShapeA = new Shape;
238 Shape *theShapeB = new Shape;
239 Shape *theShape = new Shape;
240 Path *res = new Path;
241 res->SetBackData(false);
242 Path::cut_position *toCut=NULL;
243 int nbToCut=0;
245 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
246 // true boolean op
247 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
248 originaux[0]->ConvertWithBackData(0.1);
250 originaux[0]->Fill(theShape, 0);
252 theShapeA->ConvertToShape(theShape, origWind[0]);
254 curOrig = 1;
255 for (GSList *l = il->next; l != NULL; l = l->next) {
256 originaux[curOrig]->ConvertWithBackData(0.1);
258 originaux[curOrig]->Fill(theShape, curOrig);
260 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
262 // les elements arrivent en ordre inverse dans la liste
263 theShape->Booleen(theShapeB, theShapeA, bop);
265 {
266 Shape *swap = theShape;
267 theShape = theShapeA;
268 theShapeA = swap;
269 }
270 curOrig++;
271 }
273 {
274 Shape *swap = theShape;
275 theShape = theShapeA;
276 theShapeA = swap;
277 }
279 } else if ( bop == bool_op_cut ) {
280 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
281 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
282 // it is just uncrossed, and cleaned from duplicate edges and points
283 // then it's fed to Booleen() which will uncross it against the other path
284 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
285 // thus making a polygon. the weight of the edges of the cut are all 0, but
286 // the Booleen need to invert the ones inside the source polygon (for the subsequent
287 // ConvertToForme)
289 // the cut path needs to have the highest pathID in the back data
290 // that's how the Booleen() function knows it's an edge of the cut
292 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
293 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
294 // left it at 1.0. Investigate replacing this by a combination of difference and
295 // intersection of the same two paths. -- bb
296 {
297 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
298 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
299 }
300 originaux[0]->ConvertWithBackData(1.0);
302 originaux[0]->Fill(theShape, 0);
304 theShapeA->ConvertToShape(theShape, origWind[0]);
306 originaux[1]->ConvertWithBackData(1.0);
308 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
310 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
312 // les elements arrivent en ordre inverse dans la liste
313 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
315 } else if ( bop == bool_op_slice ) {
316 // slice is not really a boolean operation
317 // you just put the 2 shapes in a single polygon, uncross it
318 // the points where the degree is > 2 are intersections
319 // just check it's an intersection on the path you want to cut, and keep it
320 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
321 // make new subpath at each one of these positions
322 // inversion pour l'op\8eration
323 {
324 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
325 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
326 }
327 originaux[0]->ConvertWithBackData(1.0);
329 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
331 originaux[1]->ConvertWithBackData(1.0);
333 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
335 theShape->ConvertToShape(theShapeA, fill_justDont);
337 if ( theShape->hasBackData() ) {
338 // should always be the case, but ya never know
339 {
340 for (int i = 0; i < theShape->numberOfPoints(); i++) {
341 if ( theShape->getPoint(i).totalDegree() > 2 ) {
342 // possibly an intersection
343 // we need to check that at least one edge from the source path is incident to it
344 // before we declare it's an intersection
345 int cb = theShape->getPoint(i).incidentEdge[FIRST];
346 int nbOrig=0;
347 int nbOther=0;
348 int piece=-1;
349 float t=0.0;
350 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
351 if ( theShape->ebData[cb].pathID == 0 ) {
352 // the source has an edge incident to the point, get its position on the path
353 piece=theShape->ebData[cb].pieceID;
354 if ( theShape->getEdge(cb).st == i ) {
355 t=theShape->ebData[cb].tSt;
356 } else {
357 t=theShape->ebData[cb].tEn;
358 }
359 nbOrig++;
360 }
361 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
362 cb=theShape->NextAt(i, cb);
363 }
364 if ( nbOrig > 0 && nbOther > 0 ) {
365 // point incident to both path and cut: an intersection
366 // note that you only keep one position on the source; you could have degenerate
367 // cases where the source crosses itself at this point, and you wouyld miss an intersection
368 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
369 toCut[nbToCut].piece=piece;
370 toCut[nbToCut].t=t;
371 nbToCut++;
372 }
373 }
374 }
375 }
376 {
377 // i think it's useless now
378 int i = theShape->numberOfEdges() - 1;
379 for (;i>=0;i--) {
380 if ( theShape->ebData[i].pathID == 1 ) {
381 theShape->SubEdge(i);
382 }
383 }
384 }
386 }
387 }
389 int* nesting=NULL;
390 int* conts=NULL;
391 int nbNest=0;
392 // pour compenser le swap juste avant
393 if ( bop == bool_op_slice ) {
394 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
395 // res->ConvertForcedToMoveTo();
396 res->Copy(originaux[0]);
397 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
398 free(toCut);
399 } else if ( bop == bool_op_cut ) {
400 // il faut appeler pour desallouer PointData (pas vital, mais bon)
401 // the Booleen() function did not deallocated the point_data array in theShape, because this
402 // function needs it.
403 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
404 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
405 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
406 } else {
407 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
408 }
410 delete theShape;
411 delete theShapeA;
412 delete theShapeB;
413 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
415 if (res->descr_cmd.size() <= 1)
416 {
417 // only one command, presumably a moveto: it isn't a path
418 for (GSList *l = il; l != NULL; l = l->next)
419 {
420 SP_OBJECT(l->data)->deleteObject();
421 }
422 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
423 description);
424 selection->clear();
426 delete res;
427 g_slist_free(il);
428 return;
429 }
431 // get the source path object
432 SPObject *source;
433 if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
434 if (reverseOrderForOp) {
435 source = SP_OBJECT(il->data);
436 } else {
437 source = SP_OBJECT(il->next->data);
438 }
439 } else {
440 // find out the bottom object
441 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
443 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
445 source = sp_desktop_document(desktop)->
446 getObjectByRepr((Inkscape::XML::Node *)sorted->data);
448 g_slist_free(sorted);
449 }
451 // adjust style properties that depend on a possible transform in the source object in order
452 // to get a correct style attribute for the new path
453 SPItem* item_source = SP_ITEM(source);
454 NR::Matrix i2root = sp_item_i2root_affine(item_source);
455 sp_item_adjust_stroke(item_source, i2root.expansion());
456 sp_item_adjust_pattern(item_source, i2root);
457 sp_item_adjust_gradient(item_source, i2root);
458 sp_item_adjust_livepatheffect(item_source, i2root);
460 Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
462 // remember important aspects of the source path, to be restored
463 gint pos = repr_source->position();
464 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
465 gchar const *id = repr_source->attribute("id");
466 gchar const *style = repr_source->attribute("style");
467 gchar const *mask = repr_source->attribute("mask");
468 gchar const *clip_path = repr_source->attribute("clip-path");
470 // remove source paths
471 selection->clear();
472 for (GSList *l = il; l != NULL; l = l->next) {
473 // if this is the bottommost object,
474 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
475 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
476 SP_OBJECT(l->data)->deleteObject(false);
477 } else {
478 // delete the object for real, so that its clones can take appropriate action
479 SP_OBJECT(l->data)->deleteObject();
480 }
481 }
482 g_slist_free(il);
484 // premultiply by the inverse of parent's repr
485 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
486 NR::Matrix local = sp_item_i2doc_affine(parent_item);
487 gchar *transform = sp_svg_transform_write(local.inverse());
489 // now that we have the result, add it on the canvas
490 if ( bop == bool_op_cut || bop == bool_op_slice ) {
491 int nbRP=0;
492 Path** resPath;
493 if ( bop == bool_op_slice ) {
494 // there are moveto's at each intersection, but it's still one unique path
495 // so break it down and add each subpath independently
496 // we could call break_apart to do this, but while we have the description...
497 resPath=res->SubPaths(nbRP, false);
498 } else {
499 // cut operation is a bit wicked: you need to keep holes
500 // that's why you needed the nesting
501 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
502 // to get the path for each part of the polygon. that's why you need the nesting info:
503 // to know in wich subpath to add a subpath
504 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
506 // cleaning
507 if ( conts ) free(conts);
508 if ( nesting ) free(nesting);
509 }
511 // add all the pieces resulting from cut or slice
512 for (int i=0;i<nbRP;i++) {
513 gchar *d = resPath[i]->svg_dump_path();
515 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
516 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
517 repr->setAttribute("style", style);
518 if (mask)
519 repr->setAttribute("mask", mask);
520 if (clip_path)
521 repr->setAttribute("clip-path", clip_path);
523 repr->setAttribute("d", d);
524 g_free(d);
526 // for slice, remove fill
527 if (bop == bool_op_slice) {
528 SPCSSAttr *css;
530 css = sp_repr_css_attr_new();
531 sp_repr_css_set_property(css, "fill", "none");
533 sp_repr_css_change(repr, css, "style");
535 sp_repr_css_attr_unref(css);
536 }
538 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
539 // this means it's basically random which of the pieces inherits the original's id and clones
540 // a better algorithm might figure out e.g. the biggest piece
541 repr->setAttribute("id", id);
543 repr->setAttribute("transform", transform);
545 // add the new repr to the parent
546 parent->appendChild(repr);
548 // move to the saved position
549 repr->setPosition(pos > 0 ? pos : 0);
551 selection->add(repr);
552 Inkscape::GC::release(repr);
554 delete resPath[i];
555 }
556 if ( resPath ) free(resPath);
558 } else {
559 gchar *d = res->svg_dump_path();
561 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
562 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
563 repr->setAttribute("style", style);
565 if ( mask )
566 repr->setAttribute("mask", mask);
568 if ( clip_path )
569 repr->setAttribute("clip-path", clip_path);
571 repr->setAttribute("d", d);
572 g_free(d);
574 repr->setAttribute("transform", transform);
576 repr->setAttribute("id", id);
577 parent->appendChild(repr);
578 repr->setPosition(pos > 0 ? pos : 0);
580 selection->add(repr);
581 Inkscape::GC::release(repr);
582 }
584 g_free(transform);
586 if (verb != SP_VERB_NONE) {
587 sp_document_done(sp_desktop_document(desktop), verb, description);
588 }
590 delete res;
591 }
594 void
595 sp_selected_path_outline()
596 {
597 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
599 Inkscape::Selection *selection = sp_desktop_selection(desktop);
601 if (selection->isEmpty()) {
602 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
603 return;
604 }
606 bool did = false;
608 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
609 items != NULL;
610 items = items->next) {
612 SPItem *item = (SPItem *) items->data;
614 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
615 continue;
617 SPCurve *curve = NULL;
618 if (SP_IS_SHAPE(item)) {
619 curve = sp_shape_get_curve(SP_SHAPE(item));
620 if (curve == NULL)
621 continue;
622 }
623 if (SP_IS_TEXT(item)) {
624 curve = SP_TEXT(item)->getNormalizedBpath();
625 if (curve == NULL)
626 continue;
627 }
629 { // pas de stroke pas de chocolat
630 SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
631 gchar const *val = sp_repr_css_property(css, "stroke", NULL);
633 if (val == NULL || strcmp(val, "none") == 0) {
634 sp_curve_unref(curve);
635 continue;
636 }
637 }
639 // remember old stroke style, to be set on fill
640 SPCSSAttr *ncss;
641 {
642 SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
643 gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
644 gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
646 ncss = sp_repr_css_attr_new();
648 sp_repr_css_set_property(ncss, "stroke", "none");
649 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
650 sp_repr_css_set_property(ncss, "fill", val);
651 if ( opac ) {
652 sp_repr_css_set_property(ncss, "fill-opacity", opac);
653 } else {
654 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
655 }
656 sp_repr_css_unset_property(ncss, "marker-start");
657 sp_repr_css_unset_property(ncss, "marker-mid");
658 sp_repr_css_unset_property(ncss, "marker-end");
659 }
661 NR::Matrix const transform(item->transform);
662 float const scale = transform.expansion();
663 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
664 SPStyle *i_style = SP_OBJECT(item)->style;
665 gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
666 gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
668 float o_width, o_miter;
669 JoinType o_join;
670 ButtType o_butt;
672 {
673 int jointype, captype;
675 jointype = i_style->stroke_linejoin.computed;
676 captype = i_style->stroke_linecap.computed;
677 o_width = i_style->stroke_width.computed;
679 switch (jointype) {
680 case SP_STROKE_LINEJOIN_MITER:
681 o_join = join_pointy;
682 break;
683 case SP_STROKE_LINEJOIN_ROUND:
684 o_join = join_round;
685 break;
686 default:
687 o_join = join_straight;
688 break;
689 }
691 switch (captype) {
692 case SP_STROKE_LINECAP_SQUARE:
693 o_butt = butt_square;
694 break;
695 case SP_STROKE_LINECAP_ROUND:
696 o_butt = butt_round;
697 break;
698 default:
699 o_butt = butt_straight;
700 break;
701 }
703 if (o_width < 0.1)
704 o_width = 0.1;
705 o_miter = i_style->stroke_miterlimit.value * o_width;
706 }
708 Path *orig = Path_for_item(item, false);
709 if (orig == NULL) {
710 g_free(style);
711 sp_curve_unref(curve);
712 continue;
713 }
715 Path *res = new Path;
716 res->SetBackData(false);
718 if (i_style->stroke_dash.n_dash) {
719 // For dashed strokes, use Stroke method, because Outline can't do dashes
720 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
722 orig->ConvertWithBackData(0.1);
724 orig->DashPolylineFromStyle(i_style, scale, 0);
726 Shape* theShape = new Shape;
727 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
728 0.5 * o_miter);
729 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
731 Shape *theRes = new Shape;
733 theRes->ConvertToShape(theShape, fill_positive);
735 Path *originaux[1];
736 originaux[0] = res;
737 theRes->ConvertToForme(orig, 1, originaux);
739 res->Coalesce(5.0);
741 delete theShape;
742 delete theRes;
744 } else {
746 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
748 orig->Coalesce(0.5 * o_width);
750 Shape *theShape = new Shape;
751 Shape *theRes = new Shape;
753 res->ConvertWithBackData(1.0);
754 res->Fill(theShape, 0);
755 theRes->ConvertToShape(theShape, fill_positive);
757 Path *originaux[1];
758 originaux[0] = res;
759 theRes->ConvertToForme(orig, 1, originaux);
761 delete theShape;
762 delete theRes;
763 }
765 if (orig->descr_cmd.size() <= 1) {
766 // ca a merd\8e, ou bien le resultat est vide
767 delete res;
768 delete orig;
769 g_free(style);
770 continue;
771 }
773 did = true;
775 // remember the position of the item
776 gint pos = SP_OBJECT_REPR(item)->position();
777 // remember parent
778 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
779 // remember id
780 char const *id = SP_OBJECT_REPR(item)->attribute("id");
782 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
784 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
785 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
787 // restore old style
788 repr->setAttribute("style", style);
790 // set old stroke style on fill
791 sp_repr_css_change(repr, ncss, "style");
793 sp_repr_css_attr_unref(ncss);
795 gchar *str = orig->svg_dump_path();
796 repr->setAttribute("d", str);
797 g_free(str);
799 if (mask)
800 repr->setAttribute("mask", mask);
801 if (clip_path)
802 repr->setAttribute("clip-path", clip_path);
804 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
806 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
807 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
809 // add the group to the parent
810 parent->appendChild(g_repr);
811 // move to the saved position
812 g_repr->setPosition(pos > 0 ? pos : 0);
814 g_repr->appendChild(repr);
815 repr->setAttribute("id", id);
816 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
817 sp_item_write_transform(newitem, repr, transform);
819 SPShape *shape = SP_SHAPE(item);
821 for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) {
822 for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) {
823 if (sp_shape_marker_required (shape, m, bp)) {
825 SPMarker* marker = SP_MARKER (shape->marker[m]);
826 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m]));
828 NR::Matrix tr(sp_shape_marker_get_transform(shape, bp));
830 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
831 tr = NR::scale(i_style->stroke_width.computed) * tr;
832 }
834 // total marker transform
835 tr = marker_item->transform * marker->c2p * tr * transform;
837 if (SP_OBJECT_REPR(marker_item)) {
838 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
839 g_repr->appendChild(m_repr);
840 SPItem *marker_item = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(m_repr);
841 sp_item_write_transform(marker_item, m_repr, tr);
842 }
843 }
844 }
845 }
848 selection->add(g_repr);
850 Inkscape::GC::release(g_repr);
853 } else {
855 // add the new repr to the parent
856 parent->appendChild(repr);
858 // move to the saved position
859 repr->setPosition(pos > 0 ? pos : 0);
861 repr->setAttribute("id", id);
863 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
864 sp_item_write_transform(newitem, repr, transform);
866 selection->add(repr);
868 }
870 Inkscape::GC::release(repr);
872 sp_curve_unref(curve);
873 selection->remove(item);
874 SP_OBJECT(item)->deleteObject(false);
876 }
878 delete res;
879 delete orig;
880 g_free(style);
882 }
884 if (did) {
885 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
886 _("Convert stroke to path"));
887 } else {
888 // TRANSLATORS: "to outline" means "to convert stroke to path"
889 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
890 return;
891 }
892 }
895 void
896 sp_selected_path_offset()
897 {
898 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
900 sp_selected_path_do_offset(true, prefOffset);
901 }
902 void
903 sp_selected_path_inset()
904 {
905 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
907 sp_selected_path_do_offset(false, prefOffset);
908 }
910 void
911 sp_selected_path_offset_screen(double pixels)
912 {
913 sp_selected_path_do_offset(true, pixels / SP_ACTIVE_DESKTOP->current_zoom());
914 }
916 void
917 sp_selected_path_inset_screen(double pixels)
918 {
919 sp_selected_path_do_offset(false, pixels / SP_ACTIVE_DESKTOP->current_zoom());
920 }
923 void sp_selected_path_create_offset_object_zero()
924 {
925 sp_selected_path_create_offset_object(0, false);
926 }
928 void sp_selected_path_create_offset()
929 {
930 sp_selected_path_create_offset_object(1, false);
931 }
932 void sp_selected_path_create_inset()
933 {
934 sp_selected_path_create_offset_object(-1, false);
935 }
937 void sp_selected_path_create_updating_offset_object_zero()
938 {
939 sp_selected_path_create_offset_object(0, true);
940 }
942 void sp_selected_path_create_updating_offset()
943 {
944 sp_selected_path_create_offset_object(1, true);
945 }
946 void sp_selected_path_create_updating_inset()
947 {
948 sp_selected_path_create_offset_object(-1, true);
949 }
951 void
952 sp_selected_path_create_offset_object(int expand, bool updating)
953 {
954 Inkscape::Selection *selection;
955 Inkscape::XML::Node *repr;
956 SPItem *item;
957 SPCurve *curve;
958 gchar *style, *str;
959 SPDesktop *desktop;
960 float o_width, o_miter;
961 JoinType o_join;
962 ButtType o_butt;
964 curve = NULL;
966 desktop = SP_ACTIVE_DESKTOP;
968 selection = sp_desktop_selection(desktop);
970 item = selection->singleItem();
972 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
973 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
974 return;
975 }
976 if (SP_IS_SHAPE(item))
977 {
978 curve = sp_shape_get_curve(SP_SHAPE(item));
979 if (curve == NULL)
980 return;
981 }
982 if (SP_IS_TEXT(item))
983 {
984 curve = SP_TEXT(item)->getNormalizedBpath();
985 if (curve == NULL)
986 return;
987 }
989 NR::Matrix const transform(item->transform);
991 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
993 style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
995 // remember the position of the item
996 gint pos = SP_OBJECT_REPR(item)->position();
997 // remember parent
998 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1000 {
1001 SPStyle *i_style = SP_OBJECT(item)->style;
1002 int jointype, captype;
1004 jointype = i_style->stroke_linejoin.value;
1005 captype = i_style->stroke_linecap.value;
1006 o_width = i_style->stroke_width.computed;
1007 if (jointype == SP_STROKE_LINEJOIN_MITER)
1008 {
1009 o_join = join_pointy;
1010 }
1011 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1012 {
1013 o_join = join_round;
1014 }
1015 else
1016 {
1017 o_join = join_straight;
1018 }
1019 if (captype == SP_STROKE_LINECAP_SQUARE)
1020 {
1021 o_butt = butt_square;
1022 }
1023 else if (captype == SP_STROKE_LINECAP_ROUND)
1024 {
1025 o_butt = butt_round;
1026 }
1027 else
1028 {
1029 o_butt = butt_straight;
1030 }
1032 {
1033 double prefOffset = 1.0;
1034 prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
1035 o_width = prefOffset;
1036 }
1038 if (o_width < 0.01)
1039 o_width = 0.01;
1040 o_miter = i_style->stroke_miterlimit.value * o_width;
1041 }
1043 Path *orig = Path_for_item(item, true, false);
1044 if (orig == NULL)
1045 {
1046 g_free(style);
1047 sp_curve_unref(curve);
1048 return;
1049 }
1051 Path *res = new Path;
1052 res->SetBackData(false);
1054 {
1055 Shape *theShape = new Shape;
1056 Shape *theRes = new Shape;
1058 orig->ConvertWithBackData(1.0);
1059 orig->Fill(theShape, 0);
1061 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1062 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1063 if (val && strcmp(val, "nonzero") == 0)
1064 {
1065 theRes->ConvertToShape(theShape, fill_nonZero);
1066 }
1067 else if (val && strcmp(val, "evenodd") == 0)
1068 {
1069 theRes->ConvertToShape(theShape, fill_oddEven);
1070 }
1071 else
1072 {
1073 theRes->ConvertToShape(theShape, fill_nonZero);
1074 }
1076 Path *originaux[1];
1077 originaux[0] = orig;
1078 theRes->ConvertToForme(res, 1, originaux);
1080 delete theShape;
1081 delete theRes;
1082 }
1084 sp_curve_unref(curve);
1086 if (res->descr_cmd.size() <= 1)
1087 {
1088 // pas vraiment de points sur le resultat
1089 // donc il ne reste rien
1090 sp_document_done(sp_desktop_document(desktop),
1091 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1092 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1093 (updating ? _("Create linked offset")
1094 : _("Create dynamic offset")));
1095 selection->clear();
1097 delete res;
1098 delete orig;
1099 g_free(style);
1100 return;
1101 }
1103 {
1104 gchar tstr[80];
1106 tstr[79] = '\0';
1108 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1109 repr = xml_doc->createElement("svg:path");
1110 repr->setAttribute("sodipodi:type", "inkscape:offset");
1111 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1112 ? o_width
1113 : expand < 0
1114 ? -o_width
1115 : 0 ));
1117 str = res->svg_dump_path();
1118 repr->setAttribute("inkscape:original", str);
1119 g_free(str);
1121 if ( updating ) {
1122 char const *id = SP_OBJECT(item)->repr->attribute("id");
1123 char const *uri = g_strdup_printf("#%s", id);
1124 repr->setAttribute("xlink:href", uri);
1125 g_free((void *) uri);
1126 } else {
1127 repr->setAttribute("inkscape:href", NULL);
1128 }
1130 repr->setAttribute("style", style);
1132 // add the new repr to the parent
1133 parent->appendChild(repr);
1135 // move to the saved position
1136 repr->setPosition(pos > 0 ? pos : 0);
1138 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1140 if ( updating ) {
1141 // on conserve l'original
1142 // we reapply the transform to the original (offset will feel it)
1143 sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1144 } else {
1145 // delete original, apply the transform to the offset
1146 SP_OBJECT(item)->deleteObject(false);
1147 sp_item_write_transform(nitem, repr, transform);
1148 }
1150 // The object just created from a temporary repr is only a seed.
1151 // We need to invoke its write which will update its real repr (in particular adding d=)
1152 SP_OBJECT(nitem)->updateRepr();
1154 Inkscape::GC::release(repr);
1156 selection->set(nitem);
1157 }
1159 sp_document_done(sp_desktop_document(desktop),
1160 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1161 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1162 (updating ? _("Create linked offset")
1163 : _("Create dynamic offset")));
1165 delete res;
1166 delete orig;
1168 g_free(style);
1169 }
1182 void
1183 sp_selected_path_do_offset(bool expand, double prefOffset)
1184 {
1185 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1187 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1189 if (selection->isEmpty()) {
1190 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1191 return;
1192 }
1194 bool did = false;
1196 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1197 items != NULL;
1198 items = items->next) {
1200 SPItem *item = (SPItem *) items->data;
1202 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1203 continue;
1205 SPCurve *curve = NULL;
1206 if (SP_IS_SHAPE(item)) {
1207 curve = sp_shape_get_curve(SP_SHAPE(item));
1208 if (curve == NULL)
1209 continue;
1210 }
1211 if (SP_IS_TEXT(item)) {
1212 curve = SP_TEXT(item)->getNormalizedBpath();
1213 if (curve == NULL)
1214 continue;
1215 }
1217 NR::Matrix const transform(item->transform);
1219 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1221 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1223 float o_width, o_miter;
1224 JoinType o_join;
1225 ButtType o_butt;
1227 {
1228 SPStyle *i_style = SP_OBJECT(item)->style;
1229 int jointype, captype;
1231 jointype = i_style->stroke_linejoin.value;
1232 captype = i_style->stroke_linecap.value;
1233 o_width = i_style->stroke_width.computed;
1235 switch (jointype) {
1236 case SP_STROKE_LINEJOIN_MITER:
1237 o_join = join_pointy;
1238 break;
1239 case SP_STROKE_LINEJOIN_ROUND:
1240 o_join = join_round;
1241 break;
1242 default:
1243 o_join = join_straight;
1244 break;
1245 }
1247 switch (captype) {
1248 case SP_STROKE_LINECAP_SQUARE:
1249 o_butt = butt_square;
1250 break;
1251 case SP_STROKE_LINECAP_ROUND:
1252 o_butt = butt_round;
1253 break;
1254 default:
1255 o_butt = butt_straight;
1256 break;
1257 }
1259 o_width = prefOffset;
1261 if (o_width < 0.1)
1262 o_width = 0.1;
1263 o_miter = i_style->stroke_miterlimit.value * o_width;
1264 }
1266 Path *orig = Path_for_item(item, false);
1267 if (orig == NULL) {
1268 g_free(style);
1269 sp_curve_unref(curve);
1270 continue;
1271 }
1273 Path *res = new Path;
1274 res->SetBackData(false);
1276 {
1277 Shape *theShape = new Shape;
1278 Shape *theRes = new Shape;
1280 orig->ConvertWithBackData(0.03);
1281 orig->Fill(theShape, 0);
1283 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1284 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1285 if (val && strcmp(val, "nonzero") == 0)
1286 {
1287 theRes->ConvertToShape(theShape, fill_nonZero);
1288 }
1289 else if (val && strcmp(val, "evenodd") == 0)
1290 {
1291 theRes->ConvertToShape(theShape, fill_oddEven);
1292 }
1293 else
1294 {
1295 theRes->ConvertToShape(theShape, fill_nonZero);
1296 }
1298 // et maintenant: offset
1299 // methode inexacte
1300 /* Path *originaux[1];
1301 originaux[0] = orig;
1302 theRes->ConvertToForme(res, 1, originaux);
1304 if (expand) {
1305 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1306 } else {
1307 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1308 }
1310 orig->ConvertWithBackData(1.0);
1311 orig->Fill(theShape, 0);
1312 theRes->ConvertToShape(theShape, fill_positive);
1313 originaux[0] = orig;
1314 theRes->ConvertToForme(res, 1, originaux);
1316 if (o_width >= 0.5) {
1317 // res->Coalesce(1.0);
1318 res->ConvertEvenLines(1.0);
1319 res->Simplify(1.0);
1320 } else {
1321 // res->Coalesce(o_width);
1322 res->ConvertEvenLines(1.0*o_width);
1323 res->Simplify(1.0 * o_width);
1324 } */
1325 // methode par makeoffset
1327 if (expand)
1328 {
1329 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1330 }
1331 else
1332 {
1333 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1334 }
1335 theRes->ConvertToShape(theShape, fill_positive);
1337 res->Reset();
1338 theRes->ConvertToForme(res);
1340 if (o_width >= 1.0)
1341 {
1342 res->ConvertEvenLines(1.0);
1343 res->Simplify(1.0);
1344 }
1345 else
1346 {
1347 res->ConvertEvenLines(1.0*o_width);
1348 res->Simplify(1.0 * o_width);
1349 }
1351 delete theShape;
1352 delete theRes;
1353 }
1355 did = true;
1357 sp_curve_unref(curve);
1358 // remember the position of the item
1359 gint pos = SP_OBJECT_REPR(item)->position();
1360 // remember parent
1361 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1362 // remember id
1363 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1365 selection->remove(item);
1366 SP_OBJECT(item)->deleteObject(false);
1368 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1370 gchar tstr[80];
1372 tstr[79] = '\0';
1374 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1375 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1377 repr->setAttribute("style", style);
1379 gchar *str = res->svg_dump_path();
1380 repr->setAttribute("d", str);
1381 g_free(str);
1383 // add the new repr to the parent
1384 parent->appendChild(repr);
1386 // move to the saved position
1387 repr->setPosition(pos > 0 ? pos : 0);
1389 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1391 // reapply the transform
1392 sp_item_write_transform(newitem, repr, transform);
1394 repr->setAttribute("id", id);
1396 selection->add(repr);
1398 Inkscape::GC::release(repr);
1399 }
1401 delete orig;
1402 delete res;
1403 }
1405 if (did) {
1406 sp_document_done(sp_desktop_document(desktop),
1407 (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1408 (expand ? _("Outset path") : _("Inset path")));
1409 } else {
1410 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1411 return;
1412 }
1413 }
1416 static bool
1417 sp_selected_path_simplify_items(SPDesktop *desktop,
1418 Inkscape::Selection *selection, GSList *items,
1419 float threshold, bool justCoalesce,
1420 float angleLimit, bool breakableAngles,
1421 bool modifySelection);
1424 //return true if we changed something, else false
1425 bool
1426 sp_selected_path_simplify_item(SPDesktop *desktop,
1427 Inkscape::Selection *selection, SPItem *item,
1428 float threshold, bool justCoalesce,
1429 float angleLimit, bool breakableAngles,
1430 gdouble size, bool modifySelection)
1431 {
1432 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1433 return false;
1435 //If this is a group, do the children instead
1436 if (SP_IS_GROUP(item)) {
1437 GSList *items = sp_item_group_item_list(SP_GROUP(item));
1439 return sp_selected_path_simplify_items(desktop, selection, items,
1440 threshold, justCoalesce,
1441 angleLimit, breakableAngles,
1442 false);
1443 }
1446 SPCurve *curve = NULL;
1448 if (SP_IS_SHAPE(item)) {
1449 curve = sp_shape_get_curve(SP_SHAPE(item));
1450 if (!curve)
1451 return false;
1452 }
1454 if (SP_IS_TEXT(item)) {
1455 curve = SP_TEXT(item)->getNormalizedBpath();
1456 if (!curve)
1457 return false;
1458 }
1460 // save the transform, to re-apply it after simplification
1461 NR::Matrix const transform(item->transform);
1463 /*
1464 reset the transform, effectively transforming the item by transform.inverse();
1465 this is necessary so that the item is transformed twice back and forth,
1466 allowing all compensations to cancel out regardless of the preferences
1467 */
1468 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1470 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1471 gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1472 gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1474 Path *orig = Path_for_item(item, false);
1475 if (orig == NULL) {
1476 g_free(style);
1477 sp_curve_unref(curve);
1478 return false;
1479 }
1481 sp_curve_unref(curve);
1482 // remember the position of the item
1483 gint pos = SP_OBJECT_REPR(item)->position();
1484 // remember parent
1485 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1486 // remember id
1487 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1488 // remember path effect
1489 char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1491 //If a group was selected, to not change the selection list
1492 if (modifySelection)
1493 selection->remove(item);
1495 SP_OBJECT(item)->deleteObject(false);
1497 if ( justCoalesce ) {
1498 orig->Coalesce(threshold * size);
1499 } else {
1500 orig->ConvertEvenLines(threshold * size);
1501 orig->Simplify(threshold * size);
1502 }
1504 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1505 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1507 // restore style, mask and clip-path
1508 repr->setAttribute("style", style);
1509 g_free(style);
1511 if ( mask ) {
1512 repr->setAttribute("mask", mask);
1513 g_free(mask);
1514 }
1516 if ( clip_path ) {
1517 repr->setAttribute("clip-path", clip_path);
1518 g_free(clip_path);
1519 }
1521 // path
1522 gchar *str = orig->svg_dump_path();
1523 if (patheffect)
1524 repr->setAttribute("inkscape:original-d", str);
1525 else
1526 repr->setAttribute("d", str);
1527 g_free(str);
1529 // restore id
1530 repr->setAttribute("id", id);
1532 // add the new repr to the parent
1533 parent->appendChild(repr);
1535 // move to the saved position
1536 repr->setPosition(pos > 0 ? pos : 0);
1538 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1540 // reapply the transform
1541 sp_item_write_transform(newitem, repr, transform);
1543 // restore path effect
1544 repr->setAttribute("inkscape:path-effect", patheffect);
1546 //If we are not in a selected group
1547 if (modifySelection)
1548 selection->add(repr);
1550 Inkscape::GC::release(repr);
1552 // clean up
1553 if (orig) delete orig;
1555 return true;
1556 }
1559 bool
1560 sp_selected_path_simplify_items(SPDesktop *desktop,
1561 Inkscape::Selection *selection, GSList *items,
1562 float threshold, bool justCoalesce,
1563 float angleLimit, bool breakableAngles,
1564 bool modifySelection)
1565 {
1566 bool simplifyIndividualPaths =
1567 (bool) prefs_get_int_attribute("options.simplifyindividualpaths", "value", 0);
1569 gchar *simplificationType;
1570 if (simplifyIndividualPaths) {
1571 simplificationType = _("Simplifying paths (separately):");
1572 } else {
1573 simplificationType = _("Simplifying paths:");
1574 }
1576 bool didSomething = false;
1578 NR::Maybe<NR::Rect> selectionBbox = selection->bounds();
1579 if (!selectionBbox) {
1580 return false;
1581 }
1582 gdouble selectionSize = L2(selectionBbox->dimensions());
1584 gdouble simplifySize = selectionSize;
1586 int pathsSimplified = 0;
1587 int totalPathCount = g_slist_length(items);
1589 // set "busy" cursor
1590 desktop->setWaitingCursor();
1592 for (; items != NULL; items = items->next) {
1593 SPItem *item = (SPItem *) items->data;
1595 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1596 continue;
1598 if (simplifyIndividualPaths) {
1599 NR::Maybe<NR::Rect> itemBbox = item->getBounds(sp_item_i2d_affine(item));
1600 if (itemBbox) {
1601 simplifySize = L2(itemBbox->dimensions());
1602 } else {
1603 simplifySize = 0;
1604 }
1605 }
1607 pathsSimplified++;
1609 if (pathsSimplified % 20 == 0) {
1610 gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."), simplificationType, pathsSimplified, totalPathCount);
1611 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1612 }
1614 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1615 threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1616 }
1618 desktop->clearWaitingCursor();
1620 if (pathsSimplified > 20) {
1621 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1622 }
1624 return didSomething;
1625 }
1627 void
1628 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1629 float angleLimit, bool breakableAngles)
1630 {
1631 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1633 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1635 if (selection->isEmpty()) {
1636 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1637 _("Select <b>path(s)</b> to simplify."));
1638 return;
1639 }
1641 GSList *items = g_slist_copy((GSList *) selection->itemList());
1643 bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1644 items, threshold,
1645 justCoalesce,
1646 angleLimit,
1647 breakableAngles, true);
1649 if (didSomething)
1650 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1651 _("Simplify"));
1652 else
1653 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1655 }
1658 // globals for keeping track of accelerated simplify
1659 static double previousTime = 0.0;
1660 static gdouble simplifyMultiply = 1.0;
1662 void
1663 sp_selected_path_simplify(void)
1664 {
1665 gdouble simplifyThreshold =
1666 prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1667 bool simplifyJustCoalesce =
1668 (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1670 //Get the current time
1671 GTimeVal currentTimeVal;
1672 g_get_current_time(¤tTimeVal);
1673 double currentTime = currentTimeVal.tv_sec * 1000000 +
1674 currentTimeVal.tv_usec;
1676 //Was the previous call to this function recent? (<0.5 sec)
1677 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1679 // add to the threshold 1/2 of its original value
1680 simplifyMultiply += 0.5;
1681 simplifyThreshold *= simplifyMultiply;
1683 } else {
1684 // reset to the default
1685 simplifyMultiply = 1;
1686 }
1688 //remember time for next call
1689 previousTime = currentTime;
1691 //g_print("%g\n", simplify_threshold);
1693 //Make the actual call
1694 sp_selected_path_simplify_selection(simplifyThreshold,
1695 simplifyJustCoalesce, 0.0, false);
1696 }
1700 // fonctions utilitaires
1702 bool
1703 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1704 {
1705 if (who == NULL || a == NULL)
1706 return false;
1707 if (who == a)
1708 return true;
1709 return Ancetre(sp_repr_parent(a), who);
1710 }
1712 Path *
1713 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1714 {
1715 SPCurve *curve = curve_for_item(item);
1716 NArtBpath *bpath = bpath_for_curve(item, curve, doTransformation, transformFull);
1718 if (bpath == NULL) {
1719 return NULL;
1720 }
1722 Path *dest = bpath_to_Path(bpath);
1724 if (doTransformation) {
1725 g_free(bpath); // see comment in bpath_for_curve
1726 }
1728 sp_curve_unref(curve);
1730 return dest;
1731 }
1733 NArtBpath *
1734 bpath_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull)
1735 {
1736 if (curve == NULL)
1737 return NULL;
1739 NArtBpath *bpath = SP_CURVE_BPATH(curve);
1740 if (bpath == NULL) {
1741 return NULL;
1742 }
1744 if (doTransformation) {
1745 NArtBpath *new_bpath; // we will get a duplicate which has to be freed at some point!
1746 if (transformFull) {
1747 new_bpath = nr_artpath_affine(bpath, sp_item_i2doc_affine(item));
1748 } else {
1749 new_bpath = nr_artpath_affine(bpath, item->transform);
1750 }
1751 bpath = new_bpath;
1752 }
1754 return bpath;
1755 }
1757 SPCurve* curve_for_item(SPItem *item)
1758 {
1759 if (!item)
1760 return NULL;
1762 SPCurve *curve = NULL;
1764 if (SP_IS_SHAPE(item)) {
1765 if (SP_IS_PATH(item)) {
1766 curve = sp_path_get_curve_for_edit(SP_PATH(item));
1767 } else {
1768 curve = sp_shape_get_curve(SP_SHAPE(item));
1769 }
1770 }
1771 else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
1772 {
1773 curve = te_get_layout(item)->convertToCurves();
1774 }
1775 else if (SP_IS_IMAGE(item))
1776 {
1777 curve = sp_image_get_curve(SP_IMAGE(item));
1778 }
1780 return curve; // do not forget to unref the curve at some point!
1781 }
1783 Path *bpath_to_Path(NArtBpath const *bpath) {
1784 Path *dest = new Path;
1785 dest->SetBackData(false);
1786 {
1787 int i;
1788 bool closed = false;
1789 float lastX = 0.0;
1790 float lastY = 0.0;
1792 for (i = 0; bpath[i].code != NR_END; i++) {
1793 switch (bpath[i].code) {
1794 case NR_LINETO:
1795 lastX = bpath[i].x3;
1796 lastY = bpath[i].y3;
1797 {
1798 NR::Point tmp(lastX, lastY);
1799 dest->LineTo(tmp);
1800 }
1801 break;
1803 case NR_CURVETO:
1804 {
1805 NR::Point tmp, tms, tme;
1806 tmp[0]=bpath[i].x3;
1807 tmp[1]=bpath[i].y3;
1808 tms[0]=3 * (bpath[i].x1 - lastX);
1809 tms[1]=3 * (bpath[i].y1 - lastY);
1810 tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1811 tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1812 dest->CubicTo(tmp,tms,tme);
1813 }
1814 lastX = bpath[i].x3;
1815 lastY = bpath[i].y3;
1816 break;
1818 case NR_MOVETO_OPEN:
1819 case NR_MOVETO:
1820 if (closed)
1821 dest->Close();
1822 closed = (bpath[i].code == NR_MOVETO);
1823 lastX = bpath[i].x3;
1824 lastY = bpath[i].y3;
1825 {
1826 NR::Point tmp(lastX, lastY);
1827 dest->MoveTo(tmp);
1828 }
1829 break;
1830 default:
1831 break;
1832 }
1833 }
1834 if (closed)
1835 dest->Close();
1836 }
1837 return dest;
1838 }
1840 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p)
1841 {
1842 //get nearest position on path
1843 Path::cut_position pos = path->PointToCurvilignPosition(p);
1844 return pos;
1845 }
1847 NR::Point get_point_on_Path(Path *path, int piece, double t)
1848 {
1849 NR::Point p;
1850 path->PointAt(piece, t, p);
1851 return p;
1852 }
1855 /*
1856 Local Variables:
1857 mode:c++
1858 c-file-style:"stroustrup"
1859 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1860 indent-tabs-mode:nil
1861 fill-column:99
1862 End:
1863 */
1864 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :