1 #define __SP_LIVAROT_C__
2 /*
3 * splivarot.cpp
4 * Inkscape
5 *
6 * Created by fred on Fri Dec 05 2003.
7 * tweaked endlessly by bulia byak <buliabyak@users.sf.net>
8 * public domain
9 *
10 */
12 /*
13 * contains lots of stitched pieces of path-chemistry.c
14 */
16 #ifdef HAVE_CONFIG_H
17 # include <config.h>
18 #endif
20 #include <cstring>
21 #include <string>
22 #include <vector>
23 #include <glib/gmem.h>
24 #include "xml/repr.h"
25 #include "svg/svg.h"
26 #include "sp-path.h"
27 #include "sp-shape.h"
28 #include "sp-image.h"
29 #include "marker.h"
30 #include "enums.h"
31 #include "sp-text.h"
32 #include "sp-flowtext.h"
33 #include "text-editing.h"
34 #include "sp-item-group.h"
35 #include "style.h"
36 #include "inkscape.h"
37 #include "document.h"
38 #include "message-stack.h"
39 #include "selection.h"
40 #include "desktop-handles.h"
41 #include "desktop.h"
42 #include "display/canvas-bpath.h"
43 #include "display/curve.h"
44 #include <glibmm/i18n.h>
45 #include "prefs-utils.h"
47 #include "libnr/n-art-bpath.h"
48 #include "libnr/nr-path.h"
49 #include "xml/repr.h"
50 #include "xml/repr-sorting.h"
52 #include <libnr/nr-matrix-fns.h>
53 #include <libnr/nr-matrix-ops.h>
54 #include <libnr/nr-matrix-translate-ops.h>
55 #include <libnr/nr-scale-matrix-ops.h>
57 #include "livarot/Path.h"
58 #include "livarot/Shape.h"
60 #include "splivarot.h"
62 bool Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
64 void sp_selected_path_boolop(bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
65 void sp_selected_path_do_offset(bool expand, double prefOffset);
66 void sp_selected_path_create_offset_object(int expand, bool updating);
68 void
69 sp_selected_path_union()
70 {
71 sp_selected_path_boolop(bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
72 }
74 void
75 sp_selected_path_union_skip_undo()
76 {
77 sp_selected_path_boolop(bool_op_union, SP_VERB_NONE, _("Union"));
78 }
80 void
81 sp_selected_path_intersect()
82 {
83 sp_selected_path_boolop(bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
84 }
86 void
87 sp_selected_path_diff()
88 {
89 sp_selected_path_boolop(bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
90 }
92 void
93 sp_selected_path_symdiff()
94 {
95 sp_selected_path_boolop(bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
96 }
97 void
98 sp_selected_path_cut()
99 {
100 sp_selected_path_boolop(bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
101 }
102 void
103 sp_selected_path_slice()
104 {
105 sp_selected_path_boolop(bool_op_slice, SP_VERB_SELECTION_SLICE, _("Cut path"));
106 }
109 // boolean operations
110 // take the source paths from the file, do the operation, delete the originals and add the results
111 void
112 sp_selected_path_boolop(bool_op bop, const unsigned int verb, const Glib::ustring description)
113 {
114 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
116 Inkscape::Selection *selection = sp_desktop_selection(desktop);
118 GSList *il = (GSList *) selection->itemList();
120 // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
121 if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
122 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
123 return;
124 }
125 else if ( g_slist_length(il) < 1 ) {
126 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
127 return;
128 }
130 if (g_slist_length(il) > 2) {
131 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
132 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
133 return;
134 }
135 }
137 // reverseOrderForOp marks whether the order of the list is the top->down order
138 // it's only used when there are 2 objects, and for operations who need to know the
139 // topmost object (differences, cuts)
140 bool reverseOrderForOp = false;
142 // mettre les elements de la liste dans l'ordre pour ces operations
143 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
144 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
145 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
146 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
148 if (a == NULL || b == NULL) {
149 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."));
150 return;
151 }
153 if (Ancetre(a, b)) {
154 // a is the parent of b, already in the proper order
155 } else if (Ancetre(b, a)) {
156 // reverse order
157 reverseOrderForOp = true;
158 } else {
160 // objects are not in parent/child relationship;
161 // find their lowest common ancestor
162 Inkscape::XML::Node *dad = LCA(a, b);
163 if (dad == NULL) {
164 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."));
165 return;
166 }
168 // find the children of the LCA that lead from it to the a and b
169 Inkscape::XML::Node *as = AncetreFils(a, dad);
170 Inkscape::XML::Node *bs = AncetreFils(b, dad);
172 // find out which comes first
173 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
174 if (child == as) {
175 /* a first, so reverse. */
176 reverseOrderForOp = true;
177 break;
178 }
179 if (child == bs)
180 break;
181 }
182 }
183 }
185 il = g_slist_copy(il);
187 // first check if all the input objects have shapes
188 // otherwise bail out
189 for (GSList *l = il; l != NULL; l = l->next)
190 {
191 SPItem *item = SP_ITEM(l->data);
192 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
193 {
194 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
195 g_slist_free(il);
196 return;
197 }
198 }
200 // extract the livarot Paths from the source objects
201 // also get the winding rule specified in the style
202 int nbOriginaux = g_slist_length(il);
203 std::vector<Path *> originaux(nbOriginaux);
204 std::vector<FillRule> origWind(nbOriginaux);
205 int curOrig;
206 {
207 curOrig = 0;
208 for (GSList *l = il; l != NULL; l = l->next)
209 {
210 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
211 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
212 if (val && strcmp(val, "nonzero") == 0) {
213 origWind[curOrig]= fill_nonZero;
214 } else if (val && strcmp(val, "evenodd") == 0) {
215 origWind[curOrig]= fill_oddEven;
216 } else {
217 origWind[curOrig]= fill_nonZero;
218 }
220 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
221 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
222 {
223 for (int i = curOrig; i >= 0; i--) delete originaux[i];
224 g_slist_free(il);
225 return;
226 }
227 curOrig++;
228 }
229 }
230 // reverse if needed
231 // note that the selection list keeps its order
232 if ( reverseOrderForOp ) {
233 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
234 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
235 }
237 // and work
238 // some temporary instances, first
239 Shape *theShapeA = new Shape;
240 Shape *theShapeB = new Shape;
241 Shape *theShape = new Shape;
242 Path *res = new Path;
243 res->SetBackData(false);
244 Path::cut_position *toCut=NULL;
245 int nbToCut=0;
247 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
248 // true boolean op
249 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
250 originaux[0]->ConvertWithBackData(0.1);
252 originaux[0]->Fill(theShape, 0);
254 theShapeA->ConvertToShape(theShape, origWind[0]);
256 curOrig = 1;
257 for (GSList *l = il->next; l != NULL; l = l->next) {
258 originaux[curOrig]->ConvertWithBackData(0.1);
260 originaux[curOrig]->Fill(theShape, curOrig);
262 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
264 // les elements arrivent en ordre inverse dans la liste
265 theShape->Booleen(theShapeB, theShapeA, bop);
267 {
268 Shape *swap = theShape;
269 theShape = theShapeA;
270 theShapeA = swap;
271 }
272 curOrig++;
273 }
275 {
276 Shape *swap = theShape;
277 theShape = theShapeA;
278 theShapeA = swap;
279 }
281 } else if ( bop == bool_op_cut ) {
282 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
283 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
284 // it is just uncrossed, and cleaned from duplicate edges and points
285 // then it's fed to Booleen() which will uncross it against the other path
286 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
287 // thus making a polygon. the weight of the edges of the cut are all 0, but
288 // the Booleen need to invert the ones inside the source polygon (for the subsequent
289 // ConvertToForme)
291 // the cut path needs to have the highest pathID in the back data
292 // that's how the Booleen() function knows it's an edge of the cut
294 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
295 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
296 // left it at 1.0. Investigate replacing this by a combination of difference and
297 // intersection of the same two paths. -- bb
298 {
299 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
300 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
301 }
302 originaux[0]->ConvertWithBackData(1.0);
304 originaux[0]->Fill(theShape, 0);
306 theShapeA->ConvertToShape(theShape, origWind[0]);
308 originaux[1]->ConvertWithBackData(1.0);
310 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
312 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
314 // les elements arrivent en ordre inverse dans la liste
315 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
317 } else if ( bop == bool_op_slice ) {
318 // slice is not really a boolean operation
319 // you just put the 2 shapes in a single polygon, uncross it
320 // the points where the degree is > 2 are intersections
321 // just check it's an intersection on the path you want to cut, and keep it
322 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
323 // make new subpath at each one of these positions
324 // inversion pour l'op\8eration
325 {
326 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
327 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
328 }
329 originaux[0]->ConvertWithBackData(1.0);
331 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
333 originaux[1]->ConvertWithBackData(1.0);
335 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
337 theShape->ConvertToShape(theShapeA, fill_justDont);
339 if ( theShape->hasBackData() ) {
340 // should always be the case, but ya never know
341 {
342 for (int i = 0; i < theShape->numberOfPoints(); i++) {
343 if ( theShape->getPoint(i).totalDegree() > 2 ) {
344 // possibly an intersection
345 // we need to check that at least one edge from the source path is incident to it
346 // before we declare it's an intersection
347 int cb = theShape->getPoint(i).incidentEdge[FIRST];
348 int nbOrig=0;
349 int nbOther=0;
350 int piece=-1;
351 float t=0.0;
352 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
353 if ( theShape->ebData[cb].pathID == 0 ) {
354 // the source has an edge incident to the point, get its position on the path
355 piece=theShape->ebData[cb].pieceID;
356 if ( theShape->getEdge(cb).st == i ) {
357 t=theShape->ebData[cb].tSt;
358 } else {
359 t=theShape->ebData[cb].tEn;
360 }
361 nbOrig++;
362 }
363 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
364 cb=theShape->NextAt(i, cb);
365 }
366 if ( nbOrig > 0 && nbOther > 0 ) {
367 // point incident to both path and cut: an intersection
368 // note that you only keep one position on the source; you could have degenerate
369 // cases where the source crosses itself at this point, and you wouyld miss an intersection
370 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
371 toCut[nbToCut].piece=piece;
372 toCut[nbToCut].t=t;
373 nbToCut++;
374 }
375 }
376 }
377 }
378 {
379 // i think it's useless now
380 int i = theShape->numberOfEdges() - 1;
381 for (;i>=0;i--) {
382 if ( theShape->ebData[i].pathID == 1 ) {
383 theShape->SubEdge(i);
384 }
385 }
386 }
388 }
389 }
391 int* nesting=NULL;
392 int* conts=NULL;
393 int nbNest=0;
394 // pour compenser le swap juste avant
395 if ( bop == bool_op_slice ) {
396 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
397 // res->ConvertForcedToMoveTo();
398 res->Copy(originaux[0]);
399 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
400 free(toCut);
401 } else if ( bop == bool_op_cut ) {
402 // il faut appeler pour desallouer PointData (pas vital, mais bon)
403 // the Booleen() function did not deallocated the point_data array in theShape, because this
404 // function needs it.
405 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
406 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
407 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
408 } else {
409 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
410 }
412 delete theShape;
413 delete theShapeA;
414 delete theShapeB;
415 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
417 if (res->descr_cmd.size() <= 1)
418 {
419 // only one command, presumably a moveto: it isn't a path
420 for (GSList *l = il; l != NULL; l = l->next)
421 {
422 SP_OBJECT(l->data)->deleteObject();
423 }
424 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
425 description);
426 selection->clear();
428 delete res;
429 g_slist_free(il);
430 return;
431 }
433 // get the source path object
434 SPObject *source;
435 if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
436 if (reverseOrderForOp) {
437 source = SP_OBJECT(il->data);
438 } else {
439 source = SP_OBJECT(il->next->data);
440 }
441 } else {
442 // find out the bottom object
443 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
445 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
447 source = sp_desktop_document(desktop)->
448 getObjectByRepr((Inkscape::XML::Node *)sorted->data);
450 g_slist_free(sorted);
451 }
453 // adjust style properties that depend on a possible transform in the source object in order
454 // to get a correct style attribute for the new path
455 SPItem* item_source = SP_ITEM(source);
456 NR::Matrix i2root = sp_item_i2root_affine(item_source);
457 sp_item_adjust_stroke(item_source, i2root.expansion());
458 sp_item_adjust_pattern(item_source, i2root);
459 sp_item_adjust_gradient(item_source, i2root);
460 sp_item_adjust_livepatheffect(item_source, i2root);
462 Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
464 // remember important aspects of the source path, to be restored
465 gint pos = repr_source->position();
466 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
467 gchar const *id = repr_source->attribute("id");
468 gchar const *style = repr_source->attribute("style");
469 gchar const *mask = repr_source->attribute("mask");
470 gchar const *clip_path = repr_source->attribute("clip-path");
472 // remove source paths
473 selection->clear();
474 for (GSList *l = il; l != NULL; l = l->next) {
475 // if this is the bottommost object,
476 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
477 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
478 SP_OBJECT(l->data)->deleteObject(false);
479 } else {
480 // delete the object for real, so that its clones can take appropriate action
481 SP_OBJECT(l->data)->deleteObject();
482 }
483 }
484 g_slist_free(il);
486 // premultiply by the inverse of parent's repr
487 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
488 NR::Matrix local = sp_item_i2doc_affine(parent_item);
489 gchar *transform = sp_svg_transform_write(local.inverse());
491 // now that we have the result, add it on the canvas
492 if ( bop == bool_op_cut || bop == bool_op_slice ) {
493 int nbRP=0;
494 Path** resPath;
495 if ( bop == bool_op_slice ) {
496 // there are moveto's at each intersection, but it's still one unique path
497 // so break it down and add each subpath independently
498 // we could call break_apart to do this, but while we have the description...
499 resPath=res->SubPaths(nbRP, false);
500 } else {
501 // cut operation is a bit wicked: you need to keep holes
502 // that's why you needed the nesting
503 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
504 // to get the path for each part of the polygon. that's why you need the nesting info:
505 // to know in wich subpath to add a subpath
506 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
508 // cleaning
509 if ( conts ) free(conts);
510 if ( nesting ) free(nesting);
511 }
513 // add all the pieces resulting from cut or slice
514 for (int i=0;i<nbRP;i++) {
515 gchar *d = resPath[i]->svg_dump_path();
517 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
518 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
519 repr->setAttribute("style", style);
520 if (mask)
521 repr->setAttribute("mask", mask);
522 if (clip_path)
523 repr->setAttribute("clip-path", clip_path);
525 repr->setAttribute("d", d);
526 g_free(d);
528 // for slice, remove fill
529 if (bop == bool_op_slice) {
530 SPCSSAttr *css;
532 css = sp_repr_css_attr_new();
533 sp_repr_css_set_property(css, "fill", "none");
535 sp_repr_css_change(repr, css, "style");
537 sp_repr_css_attr_unref(css);
538 }
540 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
541 // this means it's basically random which of the pieces inherits the original's id and clones
542 // a better algorithm might figure out e.g. the biggest piece
543 repr->setAttribute("id", id);
545 repr->setAttribute("transform", transform);
547 // add the new repr to the parent
548 parent->appendChild(repr);
550 // move to the saved position
551 repr->setPosition(pos > 0 ? pos : 0);
553 selection->add(repr);
554 Inkscape::GC::release(repr);
556 delete resPath[i];
557 }
558 if ( resPath ) free(resPath);
560 } else {
561 gchar *d = res->svg_dump_path();
563 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
564 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
565 repr->setAttribute("style", style);
567 if ( mask )
568 repr->setAttribute("mask", mask);
570 if ( clip_path )
571 repr->setAttribute("clip-path", clip_path);
573 repr->setAttribute("d", d);
574 g_free(d);
576 repr->setAttribute("transform", transform);
578 repr->setAttribute("id", id);
579 parent->appendChild(repr);
580 repr->setPosition(pos > 0 ? pos : 0);
582 selection->add(repr);
583 Inkscape::GC::release(repr);
584 }
586 g_free(transform);
588 if (verb != SP_VERB_NONE) {
589 sp_document_done(sp_desktop_document(desktop), verb, description);
590 }
592 delete res;
593 }
596 void
597 sp_selected_path_outline()
598 {
599 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
601 Inkscape::Selection *selection = sp_desktop_selection(desktop);
603 if (selection->isEmpty()) {
604 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
605 return;
606 }
608 bool did = false;
610 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
611 items != NULL;
612 items = items->next) {
614 SPItem *item = (SPItem *) items->data;
616 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
617 continue;
619 SPCurve *curve = NULL;
620 if (SP_IS_SHAPE(item)) {
621 curve = sp_shape_get_curve(SP_SHAPE(item));
622 if (curve == NULL)
623 continue;
624 }
625 if (SP_IS_TEXT(item)) {
626 curve = SP_TEXT(item)->getNormalizedBpath();
627 if (curve == NULL)
628 continue;
629 }
631 { // pas de stroke pas de chocolat
632 SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
633 gchar const *val = sp_repr_css_property(css, "stroke", NULL);
635 if (val == NULL || strcmp(val, "none") == 0) {
636 sp_curve_unref(curve);
637 continue;
638 }
639 }
641 // remember old stroke style, to be set on fill
642 SPCSSAttr *ncss;
643 {
644 SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
645 gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
646 gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
648 ncss = sp_repr_css_attr_new();
650 sp_repr_css_set_property(ncss, "stroke", "none");
651 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
652 sp_repr_css_set_property(ncss, "fill", val);
653 if ( opac ) {
654 sp_repr_css_set_property(ncss, "fill-opacity", opac);
655 } else {
656 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
657 }
658 sp_repr_css_unset_property(ncss, "marker-start");
659 sp_repr_css_unset_property(ncss, "marker-mid");
660 sp_repr_css_unset_property(ncss, "marker-end");
661 }
663 NR::Matrix const transform(item->transform);
664 float const scale = transform.expansion();
665 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
666 SPStyle *i_style = SP_OBJECT(item)->style;
667 gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
668 gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
670 float o_width, o_miter;
671 JoinType o_join;
672 ButtType o_butt;
674 {
675 int jointype, captype;
677 jointype = i_style->stroke_linejoin.computed;
678 captype = i_style->stroke_linecap.computed;
679 o_width = i_style->stroke_width.computed;
681 switch (jointype) {
682 case SP_STROKE_LINEJOIN_MITER:
683 o_join = join_pointy;
684 break;
685 case SP_STROKE_LINEJOIN_ROUND:
686 o_join = join_round;
687 break;
688 default:
689 o_join = join_straight;
690 break;
691 }
693 switch (captype) {
694 case SP_STROKE_LINECAP_SQUARE:
695 o_butt = butt_square;
696 break;
697 case SP_STROKE_LINECAP_ROUND:
698 o_butt = butt_round;
699 break;
700 default:
701 o_butt = butt_straight;
702 break;
703 }
705 if (o_width < 0.1)
706 o_width = 0.1;
707 o_miter = i_style->stroke_miterlimit.value * o_width;
708 }
710 Path *orig = Path_for_item(item, false);
711 if (orig == NULL) {
712 g_free(style);
713 sp_curve_unref(curve);
714 continue;
715 }
717 Path *res = new Path;
718 res->SetBackData(false);
720 if (i_style->stroke_dash.n_dash) {
721 // For dashed strokes, use Stroke method, because Outline can't do dashes
722 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
724 orig->ConvertWithBackData(0.1);
726 orig->DashPolylineFromStyle(i_style, scale, 0);
728 Shape* theShape = new Shape;
729 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
730 0.5 * o_miter);
731 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
733 Shape *theRes = new Shape;
735 theRes->ConvertToShape(theShape, fill_positive);
737 Path *originaux[1];
738 originaux[0] = res;
739 theRes->ConvertToForme(orig, 1, originaux);
741 res->Coalesce(5.0);
743 delete theShape;
744 delete theRes;
746 } else {
748 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
750 orig->Coalesce(0.5 * o_width);
752 Shape *theShape = new Shape;
753 Shape *theRes = new Shape;
755 res->ConvertWithBackData(1.0);
756 res->Fill(theShape, 0);
757 theRes->ConvertToShape(theShape, fill_positive);
759 Path *originaux[1];
760 originaux[0] = res;
761 theRes->ConvertToForme(orig, 1, originaux);
763 delete theShape;
764 delete theRes;
765 }
767 if (orig->descr_cmd.size() <= 1) {
768 // ca a merd\8e, ou bien le resultat est vide
769 delete res;
770 delete orig;
771 g_free(style);
772 continue;
773 }
775 did = true;
777 // remember the position of the item
778 gint pos = SP_OBJECT_REPR(item)->position();
779 // remember parent
780 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
781 // remember id
782 char const *id = SP_OBJECT_REPR(item)->attribute("id");
784 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
786 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
787 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
789 // restore old style
790 repr->setAttribute("style", style);
792 // set old stroke style on fill
793 sp_repr_css_change(repr, ncss, "style");
795 sp_repr_css_attr_unref(ncss);
797 gchar *str = orig->svg_dump_path();
798 repr->setAttribute("d", str);
799 g_free(str);
801 if (mask)
802 repr->setAttribute("mask", mask);
803 if (clip_path)
804 repr->setAttribute("clip-path", clip_path);
806 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
808 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
809 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
811 // add the group to the parent
812 parent->appendChild(g_repr);
813 // move to the saved position
814 g_repr->setPosition(pos > 0 ? pos : 0);
816 g_repr->appendChild(repr);
817 repr->setAttribute("id", id);
818 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
819 sp_item_write_transform(newitem, repr, transform);
821 SPShape *shape = SP_SHAPE(item);
823 for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) {
824 for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) {
825 if (sp_shape_marker_required (shape, m, bp)) {
827 SPMarker* marker = SP_MARKER (shape->marker[m]);
828 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m]));
830 NR::Matrix tr(sp_shape_marker_get_transform(shape, bp));
832 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
833 tr = NR::scale(i_style->stroke_width.computed) * tr;
834 }
836 // total marker transform
837 tr = marker_item->transform * marker->c2p * tr * transform;
839 if (SP_OBJECT_REPR(marker_item)) {
840 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
841 g_repr->appendChild(m_repr);
842 SPItem *marker_item = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(m_repr);
843 sp_item_write_transform(marker_item, m_repr, tr);
844 }
845 }
846 }
847 }
850 selection->add(g_repr);
852 Inkscape::GC::release(g_repr);
855 } else {
857 // add the new repr to the parent
858 parent->appendChild(repr);
860 // move to the saved position
861 repr->setPosition(pos > 0 ? pos : 0);
863 repr->setAttribute("id", id);
865 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
866 sp_item_write_transform(newitem, repr, transform);
868 selection->add(repr);
870 }
872 Inkscape::GC::release(repr);
874 sp_curve_unref(curve);
875 selection->remove(item);
876 SP_OBJECT(item)->deleteObject(false);
878 }
880 delete res;
881 delete orig;
882 g_free(style);
884 }
886 if (did) {
887 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
888 _("Convert stroke to path"));
889 } else {
890 // TRANSLATORS: "to outline" means "to convert stroke to path"
891 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
892 return;
893 }
894 }
897 void
898 sp_selected_path_offset()
899 {
900 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
902 sp_selected_path_do_offset(true, prefOffset);
903 }
904 void
905 sp_selected_path_inset()
906 {
907 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
909 sp_selected_path_do_offset(false, prefOffset);
910 }
912 void
913 sp_selected_path_offset_screen(double pixels)
914 {
915 sp_selected_path_do_offset(true, pixels / SP_ACTIVE_DESKTOP->current_zoom());
916 }
918 void
919 sp_selected_path_inset_screen(double pixels)
920 {
921 sp_selected_path_do_offset(false, pixels / SP_ACTIVE_DESKTOP->current_zoom());
922 }
925 void sp_selected_path_create_offset_object_zero()
926 {
927 sp_selected_path_create_offset_object(0, false);
928 }
930 void sp_selected_path_create_offset()
931 {
932 sp_selected_path_create_offset_object(1, false);
933 }
934 void sp_selected_path_create_inset()
935 {
936 sp_selected_path_create_offset_object(-1, false);
937 }
939 void sp_selected_path_create_updating_offset_object_zero()
940 {
941 sp_selected_path_create_offset_object(0, true);
942 }
944 void sp_selected_path_create_updating_offset()
945 {
946 sp_selected_path_create_offset_object(1, true);
947 }
948 void sp_selected_path_create_updating_inset()
949 {
950 sp_selected_path_create_offset_object(-1, true);
951 }
953 void
954 sp_selected_path_create_offset_object(int expand, bool updating)
955 {
956 Inkscape::Selection *selection;
957 Inkscape::XML::Node *repr;
958 SPItem *item;
959 SPCurve *curve;
960 gchar *style, *str;
961 SPDesktop *desktop;
962 float o_width, o_miter;
963 JoinType o_join;
964 ButtType o_butt;
966 curve = NULL;
968 desktop = SP_ACTIVE_DESKTOP;
970 selection = sp_desktop_selection(desktop);
972 item = selection->singleItem();
974 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
975 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
976 return;
977 }
978 if (SP_IS_SHAPE(item))
979 {
980 curve = sp_shape_get_curve(SP_SHAPE(item));
981 if (curve == NULL)
982 return;
983 }
984 if (SP_IS_TEXT(item))
985 {
986 curve = SP_TEXT(item)->getNormalizedBpath();
987 if (curve == NULL)
988 return;
989 }
991 NR::Matrix const transform(item->transform);
993 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
995 style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
997 // remember the position of the item
998 gint pos = SP_OBJECT_REPR(item)->position();
999 // remember parent
1000 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1002 {
1003 SPStyle *i_style = SP_OBJECT(item)->style;
1004 int jointype, captype;
1006 jointype = i_style->stroke_linejoin.value;
1007 captype = i_style->stroke_linecap.value;
1008 o_width = i_style->stroke_width.computed;
1009 if (jointype == SP_STROKE_LINEJOIN_MITER)
1010 {
1011 o_join = join_pointy;
1012 }
1013 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1014 {
1015 o_join = join_round;
1016 }
1017 else
1018 {
1019 o_join = join_straight;
1020 }
1021 if (captype == SP_STROKE_LINECAP_SQUARE)
1022 {
1023 o_butt = butt_square;
1024 }
1025 else if (captype == SP_STROKE_LINECAP_ROUND)
1026 {
1027 o_butt = butt_round;
1028 }
1029 else
1030 {
1031 o_butt = butt_straight;
1032 }
1034 {
1035 double prefOffset = 1.0;
1036 prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
1037 o_width = prefOffset;
1038 }
1040 if (o_width < 0.01)
1041 o_width = 0.01;
1042 o_miter = i_style->stroke_miterlimit.value * o_width;
1043 }
1045 Path *orig = Path_for_item(item, true, false);
1046 if (orig == NULL)
1047 {
1048 g_free(style);
1049 sp_curve_unref(curve);
1050 return;
1051 }
1053 Path *res = new Path;
1054 res->SetBackData(false);
1056 {
1057 Shape *theShape = new Shape;
1058 Shape *theRes = new Shape;
1060 orig->ConvertWithBackData(1.0);
1061 orig->Fill(theShape, 0);
1063 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1064 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1065 if (val && strcmp(val, "nonzero") == 0)
1066 {
1067 theRes->ConvertToShape(theShape, fill_nonZero);
1068 }
1069 else if (val && strcmp(val, "evenodd") == 0)
1070 {
1071 theRes->ConvertToShape(theShape, fill_oddEven);
1072 }
1073 else
1074 {
1075 theRes->ConvertToShape(theShape, fill_nonZero);
1076 }
1078 Path *originaux[1];
1079 originaux[0] = orig;
1080 theRes->ConvertToForme(res, 1, originaux);
1082 delete theShape;
1083 delete theRes;
1084 }
1086 sp_curve_unref(curve);
1088 if (res->descr_cmd.size() <= 1)
1089 {
1090 // pas vraiment de points sur le resultat
1091 // donc il ne reste rien
1092 sp_document_done(sp_desktop_document(desktop),
1093 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1094 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1095 (updating ? _("Create linked offset")
1096 : _("Create dynamic offset")));
1097 selection->clear();
1099 delete res;
1100 delete orig;
1101 g_free(style);
1102 return;
1103 }
1105 {
1106 gchar tstr[80];
1108 tstr[79] = '\0';
1110 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1111 repr = xml_doc->createElement("svg:path");
1112 repr->setAttribute("sodipodi:type", "inkscape:offset");
1113 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1114 ? o_width
1115 : expand < 0
1116 ? -o_width
1117 : 0 ));
1119 str = res->svg_dump_path();
1120 repr->setAttribute("inkscape:original", str);
1121 g_free(str);
1123 if ( updating ) {
1124 char const *id = SP_OBJECT(item)->repr->attribute("id");
1125 char const *uri = g_strdup_printf("#%s", id);
1126 repr->setAttribute("xlink:href", uri);
1127 g_free((void *) uri);
1128 } else {
1129 repr->setAttribute("inkscape:href", NULL);
1130 }
1132 repr->setAttribute("style", style);
1134 // add the new repr to the parent
1135 parent->appendChild(repr);
1137 // move to the saved position
1138 repr->setPosition(pos > 0 ? pos : 0);
1140 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1142 if ( updating ) {
1143 // on conserve l'original
1144 // we reapply the transform to the original (offset will feel it)
1145 sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1146 } else {
1147 // delete original, apply the transform to the offset
1148 SP_OBJECT(item)->deleteObject(false);
1149 sp_item_write_transform(nitem, repr, transform);
1150 }
1152 // The object just created from a temporary repr is only a seed.
1153 // We need to invoke its write which will update its real repr (in particular adding d=)
1154 SP_OBJECT(nitem)->updateRepr();
1156 Inkscape::GC::release(repr);
1158 selection->set(nitem);
1159 }
1161 sp_document_done(sp_desktop_document(desktop),
1162 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1163 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1164 (updating ? _("Create linked offset")
1165 : _("Create dynamic offset")));
1167 delete res;
1168 delete orig;
1170 g_free(style);
1171 }
1184 void
1185 sp_selected_path_do_offset(bool expand, double prefOffset)
1186 {
1187 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1189 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1191 if (selection->isEmpty()) {
1192 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1193 return;
1194 }
1196 bool did = false;
1198 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1199 items != NULL;
1200 items = items->next) {
1202 SPItem *item = (SPItem *) items->data;
1204 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1205 continue;
1207 SPCurve *curve = NULL;
1208 if (SP_IS_SHAPE(item)) {
1209 curve = sp_shape_get_curve(SP_SHAPE(item));
1210 if (curve == NULL)
1211 continue;
1212 }
1213 if (SP_IS_TEXT(item)) {
1214 curve = SP_TEXT(item)->getNormalizedBpath();
1215 if (curve == NULL)
1216 continue;
1217 }
1219 NR::Matrix const transform(item->transform);
1221 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1223 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1225 float o_width, o_miter;
1226 JoinType o_join;
1227 ButtType o_butt;
1229 {
1230 SPStyle *i_style = SP_OBJECT(item)->style;
1231 int jointype, captype;
1233 jointype = i_style->stroke_linejoin.value;
1234 captype = i_style->stroke_linecap.value;
1235 o_width = i_style->stroke_width.computed;
1237 switch (jointype) {
1238 case SP_STROKE_LINEJOIN_MITER:
1239 o_join = join_pointy;
1240 break;
1241 case SP_STROKE_LINEJOIN_ROUND:
1242 o_join = join_round;
1243 break;
1244 default:
1245 o_join = join_straight;
1246 break;
1247 }
1249 switch (captype) {
1250 case SP_STROKE_LINECAP_SQUARE:
1251 o_butt = butt_square;
1252 break;
1253 case SP_STROKE_LINECAP_ROUND:
1254 o_butt = butt_round;
1255 break;
1256 default:
1257 o_butt = butt_straight;
1258 break;
1259 }
1261 o_width = prefOffset;
1263 if (o_width < 0.1)
1264 o_width = 0.1;
1265 o_miter = i_style->stroke_miterlimit.value * o_width;
1266 }
1268 Path *orig = Path_for_item(item, false);
1269 if (orig == NULL) {
1270 g_free(style);
1271 sp_curve_unref(curve);
1272 continue;
1273 }
1275 Path *res = new Path;
1276 res->SetBackData(false);
1278 {
1279 Shape *theShape = new Shape;
1280 Shape *theRes = new Shape;
1282 orig->ConvertWithBackData(0.03);
1283 orig->Fill(theShape, 0);
1285 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1286 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1287 if (val && strcmp(val, "nonzero") == 0)
1288 {
1289 theRes->ConvertToShape(theShape, fill_nonZero);
1290 }
1291 else if (val && strcmp(val, "evenodd") == 0)
1292 {
1293 theRes->ConvertToShape(theShape, fill_oddEven);
1294 }
1295 else
1296 {
1297 theRes->ConvertToShape(theShape, fill_nonZero);
1298 }
1300 // et maintenant: offset
1301 // methode inexacte
1302 /* Path *originaux[1];
1303 originaux[0] = orig;
1304 theRes->ConvertToForme(res, 1, originaux);
1306 if (expand) {
1307 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1308 } else {
1309 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1310 }
1312 orig->ConvertWithBackData(1.0);
1313 orig->Fill(theShape, 0);
1314 theRes->ConvertToShape(theShape, fill_positive);
1315 originaux[0] = orig;
1316 theRes->ConvertToForme(res, 1, originaux);
1318 if (o_width >= 0.5) {
1319 // res->Coalesce(1.0);
1320 res->ConvertEvenLines(1.0);
1321 res->Simplify(1.0);
1322 } else {
1323 // res->Coalesce(o_width);
1324 res->ConvertEvenLines(1.0*o_width);
1325 res->Simplify(1.0 * o_width);
1326 } */
1327 // methode par makeoffset
1329 if (expand)
1330 {
1331 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1332 }
1333 else
1334 {
1335 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1336 }
1337 theRes->ConvertToShape(theShape, fill_positive);
1339 res->Reset();
1340 theRes->ConvertToForme(res);
1342 if (o_width >= 1.0)
1343 {
1344 res->ConvertEvenLines(1.0);
1345 res->Simplify(1.0);
1346 }
1347 else
1348 {
1349 res->ConvertEvenLines(1.0*o_width);
1350 res->Simplify(1.0 * o_width);
1351 }
1353 delete theShape;
1354 delete theRes;
1355 }
1357 did = true;
1359 sp_curve_unref(curve);
1360 // remember the position of the item
1361 gint pos = SP_OBJECT_REPR(item)->position();
1362 // remember parent
1363 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1364 // remember id
1365 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1367 selection->remove(item);
1368 SP_OBJECT(item)->deleteObject(false);
1370 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1372 gchar tstr[80];
1374 tstr[79] = '\0';
1376 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1377 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1379 repr->setAttribute("style", style);
1381 gchar *str = res->svg_dump_path();
1382 repr->setAttribute("d", str);
1383 g_free(str);
1385 // add the new repr to the parent
1386 parent->appendChild(repr);
1388 // move to the saved position
1389 repr->setPosition(pos > 0 ? pos : 0);
1391 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1393 // reapply the transform
1394 sp_item_write_transform(newitem, repr, transform);
1396 repr->setAttribute("id", id);
1398 selection->add(repr);
1400 Inkscape::GC::release(repr);
1401 }
1403 delete orig;
1404 delete res;
1405 }
1407 if (did) {
1408 sp_document_done(sp_desktop_document(desktop),
1409 (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1410 (expand ? _("Outset path") : _("Inset path")));
1411 } else {
1412 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1413 return;
1414 }
1415 }
1418 static bool
1419 sp_selected_path_simplify_items(SPDesktop *desktop,
1420 Inkscape::Selection *selection, GSList *items,
1421 float threshold, bool justCoalesce,
1422 float angleLimit, bool breakableAngles,
1423 bool modifySelection);
1426 //return true if we changed something, else false
1427 bool
1428 sp_selected_path_simplify_item(SPDesktop *desktop,
1429 Inkscape::Selection *selection, SPItem *item,
1430 float threshold, bool justCoalesce,
1431 float angleLimit, bool breakableAngles,
1432 gdouble size, bool modifySelection)
1433 {
1434 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1435 return false;
1437 //If this is a group, do the children instead
1438 if (SP_IS_GROUP(item)) {
1439 GSList *items = sp_item_group_item_list(SP_GROUP(item));
1441 return sp_selected_path_simplify_items(desktop, selection, items,
1442 threshold, justCoalesce,
1443 angleLimit, breakableAngles,
1444 false);
1445 }
1448 SPCurve *curve = NULL;
1450 if (SP_IS_SHAPE(item)) {
1451 curve = sp_shape_get_curve(SP_SHAPE(item));
1452 if (!curve)
1453 return false;
1454 }
1456 if (SP_IS_TEXT(item)) {
1457 curve = SP_TEXT(item)->getNormalizedBpath();
1458 if (!curve)
1459 return false;
1460 }
1462 // save the transform, to re-apply it after simplification
1463 NR::Matrix const transform(item->transform);
1465 /*
1466 reset the transform, effectively transforming the item by transform.inverse();
1467 this is necessary so that the item is transformed twice back and forth,
1468 allowing all compensations to cancel out regardless of the preferences
1469 */
1470 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1472 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1473 gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1474 gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1476 Path *orig = Path_for_item(item, false);
1477 if (orig == NULL) {
1478 g_free(style);
1479 sp_curve_unref(curve);
1480 return false;
1481 }
1483 sp_curve_unref(curve);
1484 // remember the position of the item
1485 gint pos = SP_OBJECT_REPR(item)->position();
1486 // remember parent
1487 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1488 // remember id
1489 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1490 // remember path effect
1491 char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1493 //If a group was selected, to not change the selection list
1494 if (modifySelection)
1495 selection->remove(item);
1497 SP_OBJECT(item)->deleteObject(false);
1499 if ( justCoalesce ) {
1500 orig->Coalesce(threshold * size);
1501 } else {
1502 orig->ConvertEvenLines(threshold * size);
1503 orig->Simplify(threshold * size);
1504 }
1506 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1507 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1509 // restore style, mask and clip-path
1510 repr->setAttribute("style", style);
1511 g_free(style);
1513 if ( mask ) {
1514 repr->setAttribute("mask", mask);
1515 g_free(mask);
1516 }
1518 if ( clip_path ) {
1519 repr->setAttribute("clip-path", clip_path);
1520 g_free(clip_path);
1521 }
1523 // path
1524 gchar *str = orig->svg_dump_path();
1525 if (patheffect)
1526 repr->setAttribute("inkscape:original-d", str);
1527 else
1528 repr->setAttribute("d", str);
1529 g_free(str);
1531 // restore id
1532 repr->setAttribute("id", id);
1534 // add the new repr to the parent
1535 parent->appendChild(repr);
1537 // move to the saved position
1538 repr->setPosition(pos > 0 ? pos : 0);
1540 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1542 // reapply the transform
1543 sp_item_write_transform(newitem, repr, transform);
1545 // restore path effect
1546 repr->setAttribute("inkscape:path-effect", patheffect);
1548 //If we are not in a selected group
1549 if (modifySelection)
1550 selection->add(repr);
1552 Inkscape::GC::release(repr);
1554 // clean up
1555 if (orig) delete orig;
1557 return true;
1558 }
1561 bool
1562 sp_selected_path_simplify_items(SPDesktop *desktop,
1563 Inkscape::Selection *selection, GSList *items,
1564 float threshold, bool justCoalesce,
1565 float angleLimit, bool breakableAngles,
1566 bool modifySelection)
1567 {
1568 bool simplifyIndividualPaths =
1569 (bool) prefs_get_int_attribute("options.simplifyindividualpaths", "value", 0);
1571 gchar *simplificationType;
1572 if (simplifyIndividualPaths) {
1573 simplificationType = _("Simplifying paths (separately):");
1574 } else {
1575 simplificationType = _("Simplifying paths:");
1576 }
1578 bool didSomething = false;
1580 NR::Maybe<NR::Rect> selectionBbox = selection->bounds();
1581 if (!selectionBbox) {
1582 return false;
1583 }
1584 gdouble selectionSize = L2(selectionBbox->dimensions());
1586 gdouble simplifySize = selectionSize;
1588 int pathsSimplified = 0;
1589 int totalPathCount = g_slist_length(items);
1591 // set "busy" cursor
1592 desktop->setWaitingCursor();
1594 for (; items != NULL; items = items->next) {
1595 SPItem *item = (SPItem *) items->data;
1597 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1598 continue;
1600 if (simplifyIndividualPaths) {
1601 NR::Maybe<NR::Rect> itemBbox = item->getBounds(sp_item_i2d_affine(item));
1602 if (itemBbox) {
1603 simplifySize = L2(itemBbox->dimensions());
1604 } else {
1605 simplifySize = 0;
1606 }
1607 }
1609 pathsSimplified++;
1611 if (pathsSimplified % 20 == 0) {
1612 gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."), simplificationType, pathsSimplified, totalPathCount);
1613 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1614 }
1616 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1617 threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1618 }
1620 desktop->clearWaitingCursor();
1622 if (pathsSimplified > 20) {
1623 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1624 }
1626 return didSomething;
1627 }
1629 void
1630 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1631 float angleLimit, bool breakableAngles)
1632 {
1633 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1635 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1637 if (selection->isEmpty()) {
1638 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1639 _("Select <b>path(s)</b> to simplify."));
1640 return;
1641 }
1643 GSList *items = g_slist_copy((GSList *) selection->itemList());
1645 bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1646 items, threshold,
1647 justCoalesce,
1648 angleLimit,
1649 breakableAngles, true);
1651 if (didSomething)
1652 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1653 _("Simplify"));
1654 else
1655 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1657 }
1660 // globals for keeping track of accelerated simplify
1661 static double previousTime = 0.0;
1662 static gdouble simplifyMultiply = 1.0;
1664 void
1665 sp_selected_path_simplify(void)
1666 {
1667 gdouble simplifyThreshold =
1668 prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1669 bool simplifyJustCoalesce =
1670 (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1672 //Get the current time
1673 GTimeVal currentTimeVal;
1674 g_get_current_time(¤tTimeVal);
1675 double currentTime = currentTimeVal.tv_sec * 1000000 +
1676 currentTimeVal.tv_usec;
1678 //Was the previous call to this function recent? (<0.5 sec)
1679 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1681 // add to the threshold 1/2 of its original value
1682 simplifyMultiply += 0.5;
1683 simplifyThreshold *= simplifyMultiply;
1685 } else {
1686 // reset to the default
1687 simplifyMultiply = 1;
1688 }
1690 //remember time for next call
1691 previousTime = currentTime;
1693 //g_print("%g\n", simplify_threshold);
1695 //Make the actual call
1696 sp_selected_path_simplify_selection(simplifyThreshold,
1697 simplifyJustCoalesce, 0.0, false);
1698 }
1702 // fonctions utilitaires
1704 bool
1705 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1706 {
1707 if (who == NULL || a == NULL)
1708 return false;
1709 if (who == a)
1710 return true;
1711 return Ancetre(sp_repr_parent(a), who);
1712 }
1714 Path *
1715 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1716 {
1717 SPCurve *curve = curve_for_item(item);
1718 NArtBpath *bpath = bpath_for_curve(item, curve, doTransformation, transformFull);
1720 if (bpath == NULL) {
1721 return NULL;
1722 }
1724 Path *dest = bpath_to_Path(bpath);
1726 if (doTransformation) {
1727 g_free(bpath); // see comment in bpath_for_curve
1728 }
1730 sp_curve_unref(curve);
1732 return dest;
1733 }
1735 NArtBpath *
1736 bpath_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull)
1737 {
1738 if (curve == NULL)
1739 return NULL;
1741 NArtBpath *bpath = SP_CURVE_BPATH(curve);
1742 if (bpath == NULL) {
1743 return NULL;
1744 }
1746 if (doTransformation) {
1747 NArtBpath *new_bpath; // we will get a duplicate which has to be freed at some point!
1748 if (transformFull) {
1749 new_bpath = nr_artpath_affine(bpath, sp_item_i2doc_affine(item));
1750 } else {
1751 new_bpath = nr_artpath_affine(bpath, item->transform);
1752 }
1753 bpath = new_bpath;
1754 }
1756 return bpath;
1757 }
1759 SPCurve* curve_for_item(SPItem *item)
1760 {
1761 if (!item)
1762 return NULL;
1764 SPCurve *curve = NULL;
1766 if (SP_IS_SHAPE(item)) {
1767 if (SP_IS_PATH(item)) {
1768 curve = sp_path_get_curve_for_edit(SP_PATH(item));
1769 } else {
1770 curve = sp_shape_get_curve(SP_SHAPE(item));
1771 }
1772 }
1773 else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
1774 {
1775 curve = te_get_layout(item)->convertToCurves();
1776 }
1777 else if (SP_IS_IMAGE(item))
1778 {
1779 curve = sp_image_get_curve(SP_IMAGE(item));
1780 }
1782 return curve; // do not forget to unref the curve at some point!
1783 }
1785 Path *bpath_to_Path(NArtBpath const *bpath) {
1786 Path *dest = new Path;
1787 dest->SetBackData(false);
1788 {
1789 int i;
1790 bool closed = false;
1791 float lastX = 0.0;
1792 float lastY = 0.0;
1794 for (i = 0; bpath[i].code != NR_END; i++) {
1795 switch (bpath[i].code) {
1796 case NR_LINETO:
1797 lastX = bpath[i].x3;
1798 lastY = bpath[i].y3;
1799 {
1800 NR::Point tmp(lastX, lastY);
1801 dest->LineTo(tmp);
1802 }
1803 break;
1805 case NR_CURVETO:
1806 {
1807 NR::Point tmp, tms, tme;
1808 tmp[0]=bpath[i].x3;
1809 tmp[1]=bpath[i].y3;
1810 tms[0]=3 * (bpath[i].x1 - lastX);
1811 tms[1]=3 * (bpath[i].y1 - lastY);
1812 tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1813 tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1814 dest->CubicTo(tmp,tms,tme);
1815 }
1816 lastX = bpath[i].x3;
1817 lastY = bpath[i].y3;
1818 break;
1820 case NR_MOVETO_OPEN:
1821 case NR_MOVETO:
1822 if (closed)
1823 dest->Close();
1824 closed = (bpath[i].code == NR_MOVETO);
1825 lastX = bpath[i].x3;
1826 lastY = bpath[i].y3;
1827 {
1828 NR::Point tmp(lastX, lastY);
1829 dest->MoveTo(tmp);
1830 }
1831 break;
1832 default:
1833 break;
1834 }
1835 }
1836 if (closed)
1837 dest->Close();
1838 }
1839 return dest;
1840 }
1842 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p)
1843 {
1844 //get nearest position on path
1845 Path::cut_position pos = path->PointToCurvilignPosition(p);
1846 return pos;
1847 }
1849 NR::Point get_point_on_Path(Path *path, int piece, double t)
1850 {
1851 NR::Point p;
1852 path->PointAt(piece, t, p);
1853 return p;
1854 }
1857 /*
1858 Local Variables:
1859 mode:c++
1860 c-file-style:"stroustrup"
1861 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1862 indent-tabs-mode:nil
1863 fill-column:99
1864 End:
1865 */
1866 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :