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"
51 #include <2geom/pathvector.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>
56 #include <libnr/n-art-bpath-2geom.h>
58 #include "livarot/Path.h"
59 #include "livarot/Shape.h"
61 #include "splivarot.h"
63 bool Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
65 void sp_selected_path_boolop(bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
66 void sp_selected_path_do_offset(bool expand, double prefOffset);
67 void sp_selected_path_create_offset_object(int expand, bool updating);
69 void
70 sp_selected_path_union()
71 {
72 sp_selected_path_boolop(bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
73 }
75 void
76 sp_selected_path_union_skip_undo()
77 {
78 sp_selected_path_boolop(bool_op_union, SP_VERB_NONE, _("Union"));
79 }
81 void
82 sp_selected_path_intersect()
83 {
84 sp_selected_path_boolop(bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
85 }
87 void
88 sp_selected_path_diff()
89 {
90 sp_selected_path_boolop(bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
91 }
93 void
94 sp_selected_path_diff_skip_undo()
95 {
96 sp_selected_path_boolop(bool_op_diff, SP_VERB_NONE, _("Difference"));
97 }
99 void
100 sp_selected_path_symdiff()
101 {
102 sp_selected_path_boolop(bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
103 }
104 void
105 sp_selected_path_cut()
106 {
107 sp_selected_path_boolop(bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
108 }
109 void
110 sp_selected_path_slice()
111 {
112 sp_selected_path_boolop(bool_op_slice, SP_VERB_SELECTION_SLICE, _("Cut path"));
113 }
116 // boolean operations
117 // take the source paths from the file, do the operation, delete the originals and add the results
118 void
119 sp_selected_path_boolop(bool_op bop, const unsigned int verb, const Glib::ustring description)
120 {
121 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
123 Inkscape::Selection *selection = sp_desktop_selection(desktop);
125 GSList *il = (GSList *) selection->itemList();
127 // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
128 if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
129 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
130 return;
131 }
132 else if ( g_slist_length(il) < 1 ) {
133 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
134 return;
135 }
137 if (g_slist_length(il) > 2) {
138 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
139 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
140 return;
141 }
142 }
144 // reverseOrderForOp marks whether the order of the list is the top->down order
145 // it's only used when there are 2 objects, and for operations who need to know the
146 // topmost object (differences, cuts)
147 bool reverseOrderForOp = false;
149 // mettre les elements de la liste dans l'ordre pour ces operations
150 if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
151 // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
152 Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
153 Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
155 if (a == NULL || b == NULL) {
156 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."));
157 return;
158 }
160 if (Ancetre(a, b)) {
161 // a is the parent of b, already in the proper order
162 } else if (Ancetre(b, a)) {
163 // reverse order
164 reverseOrderForOp = true;
165 } else {
167 // objects are not in parent/child relationship;
168 // find their lowest common ancestor
169 Inkscape::XML::Node *dad = LCA(a, b);
170 if (dad == NULL) {
171 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."));
172 return;
173 }
175 // find the children of the LCA that lead from it to the a and b
176 Inkscape::XML::Node *as = AncetreFils(a, dad);
177 Inkscape::XML::Node *bs = AncetreFils(b, dad);
179 // find out which comes first
180 for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
181 if (child == as) {
182 /* a first, so reverse. */
183 reverseOrderForOp = true;
184 break;
185 }
186 if (child == bs)
187 break;
188 }
189 }
190 }
192 il = g_slist_copy(il);
194 // first check if all the input objects have shapes
195 // otherwise bail out
196 for (GSList *l = il; l != NULL; l = l->next)
197 {
198 SPItem *item = SP_ITEM(l->data);
199 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
200 {
201 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
202 g_slist_free(il);
203 return;
204 }
205 }
207 // extract the livarot Paths from the source objects
208 // also get the winding rule specified in the style
209 int nbOriginaux = g_slist_length(il);
210 std::vector<Path *> originaux(nbOriginaux);
211 std::vector<FillRule> origWind(nbOriginaux);
212 int curOrig;
213 {
214 curOrig = 0;
215 for (GSList *l = il; l != NULL; l = l->next)
216 {
217 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
218 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
219 if (val && strcmp(val, "nonzero") == 0) {
220 origWind[curOrig]= fill_nonZero;
221 } else if (val && strcmp(val, "evenodd") == 0) {
222 origWind[curOrig]= fill_oddEven;
223 } else {
224 origWind[curOrig]= fill_nonZero;
225 }
227 originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
228 if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
229 {
230 for (int i = curOrig; i >= 0; i--) delete originaux[i];
231 g_slist_free(il);
232 return;
233 }
234 curOrig++;
235 }
236 }
237 // reverse if needed
238 // note that the selection list keeps its order
239 if ( reverseOrderForOp ) {
240 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
241 FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
242 }
244 // and work
245 // some temporary instances, first
246 Shape *theShapeA = new Shape;
247 Shape *theShapeB = new Shape;
248 Shape *theShape = new Shape;
249 Path *res = new Path;
250 res->SetBackData(false);
251 Path::cut_position *toCut=NULL;
252 int nbToCut=0;
254 if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
255 // true boolean op
256 // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
257 originaux[0]->ConvertWithBackData(0.1);
259 originaux[0]->Fill(theShape, 0);
261 theShapeA->ConvertToShape(theShape, origWind[0]);
263 curOrig = 1;
264 for (GSList *l = il->next; l != NULL; l = l->next) {
265 originaux[curOrig]->ConvertWithBackData(0.1);
267 originaux[curOrig]->Fill(theShape, curOrig);
269 theShapeB->ConvertToShape(theShape, origWind[curOrig]);
271 // les elements arrivent en ordre inverse dans la liste
272 theShape->Booleen(theShapeB, theShapeA, bop);
274 {
275 Shape *swap = theShape;
276 theShape = theShapeA;
277 theShapeA = swap;
278 }
279 curOrig++;
280 }
282 {
283 Shape *swap = theShape;
284 theShape = theShapeA;
285 theShapeA = swap;
286 }
288 } else if ( bop == bool_op_cut ) {
289 // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
290 // technically, the cut path is not necessarily a polygon (thus has no winding rule)
291 // it is just uncrossed, and cleaned from duplicate edges and points
292 // then it's fed to Booleen() which will uncross it against the other path
293 // then comes the trick: each edge of the cut path is duplicated (one in each direction),
294 // thus making a polygon. the weight of the edges of the cut are all 0, but
295 // the Booleen need to invert the ones inside the source polygon (for the subsequent
296 // ConvertToForme)
298 // the cut path needs to have the highest pathID in the back data
299 // that's how the Booleen() function knows it's an edge of the cut
301 // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
302 // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
303 // left it at 1.0. Investigate replacing this by a combination of difference and
304 // intersection of the same two paths. -- bb
305 {
306 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
307 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
308 }
309 originaux[0]->ConvertWithBackData(1.0);
311 originaux[0]->Fill(theShape, 0);
313 theShapeA->ConvertToShape(theShape, origWind[0]);
315 originaux[1]->ConvertWithBackData(1.0);
317 originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
319 theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
321 // les elements arrivent en ordre inverse dans la liste
322 theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
324 } else if ( bop == bool_op_slice ) {
325 // slice is not really a boolean operation
326 // you just put the 2 shapes in a single polygon, uncross it
327 // the points where the degree is > 2 are intersections
328 // just check it's an intersection on the path you want to cut, and keep it
329 // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
330 // make new subpath at each one of these positions
331 // inversion pour l'op\8eration
332 {
333 Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
334 int swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
335 }
336 originaux[0]->ConvertWithBackData(1.0);
338 originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
340 originaux[1]->ConvertWithBackData(1.0);
342 originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
344 theShape->ConvertToShape(theShapeA, fill_justDont);
346 if ( theShape->hasBackData() ) {
347 // should always be the case, but ya never know
348 {
349 for (int i = 0; i < theShape->numberOfPoints(); i++) {
350 if ( theShape->getPoint(i).totalDegree() > 2 ) {
351 // possibly an intersection
352 // we need to check that at least one edge from the source path is incident to it
353 // before we declare it's an intersection
354 int cb = theShape->getPoint(i).incidentEdge[FIRST];
355 int nbOrig=0;
356 int nbOther=0;
357 int piece=-1;
358 float t=0.0;
359 while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
360 if ( theShape->ebData[cb].pathID == 0 ) {
361 // the source has an edge incident to the point, get its position on the path
362 piece=theShape->ebData[cb].pieceID;
363 if ( theShape->getEdge(cb).st == i ) {
364 t=theShape->ebData[cb].tSt;
365 } else {
366 t=theShape->ebData[cb].tEn;
367 }
368 nbOrig++;
369 }
370 if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
371 cb=theShape->NextAt(i, cb);
372 }
373 if ( nbOrig > 0 && nbOther > 0 ) {
374 // point incident to both path and cut: an intersection
375 // note that you only keep one position on the source; you could have degenerate
376 // cases where the source crosses itself at this point, and you wouyld miss an intersection
377 toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
378 toCut[nbToCut].piece=piece;
379 toCut[nbToCut].t=t;
380 nbToCut++;
381 }
382 }
383 }
384 }
385 {
386 // i think it's useless now
387 int i = theShape->numberOfEdges() - 1;
388 for (;i>=0;i--) {
389 if ( theShape->ebData[i].pathID == 1 ) {
390 theShape->SubEdge(i);
391 }
392 }
393 }
395 }
396 }
398 int* nesting=NULL;
399 int* conts=NULL;
400 int nbNest=0;
401 // pour compenser le swap juste avant
402 if ( bop == bool_op_slice ) {
403 // theShape->ConvertToForme(res, nbOriginaux, originaux, true);
404 // res->ConvertForcedToMoveTo();
405 res->Copy(originaux[0]);
406 res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
407 free(toCut);
408 } else if ( bop == bool_op_cut ) {
409 // il faut appeler pour desallouer PointData (pas vital, mais bon)
410 // the Booleen() function did not deallocated the point_data array in theShape, because this
411 // function needs it.
412 // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
413 // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
414 theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
415 } else {
416 theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
417 }
419 delete theShape;
420 delete theShapeA;
421 delete theShapeB;
422 for (int i = 0; i < nbOriginaux; i++) delete originaux[i];
424 if (res->descr_cmd.size() <= 1)
425 {
426 // only one command, presumably a moveto: it isn't a path
427 for (GSList *l = il; l != NULL; l = l->next)
428 {
429 SP_OBJECT(l->data)->deleteObject();
430 }
431 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
432 description);
433 selection->clear();
435 delete res;
436 g_slist_free(il);
437 return;
438 }
440 // get the source path object
441 SPObject *source;
442 if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
443 if (reverseOrderForOp) {
444 source = SP_OBJECT(il->data);
445 } else {
446 source = SP_OBJECT(il->next->data);
447 }
448 } else {
449 // find out the bottom object
450 GSList *sorted = g_slist_copy((GSList *) selection->reprList());
452 sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
454 source = sp_desktop_document(desktop)->
455 getObjectByRepr((Inkscape::XML::Node *)sorted->data);
457 g_slist_free(sorted);
458 }
460 // adjust style properties that depend on a possible transform in the source object in order
461 // to get a correct style attribute for the new path
462 SPItem* item_source = SP_ITEM(source);
463 NR::Matrix i2root = from_2geom(sp_item_i2root_affine(item_source));
464 sp_item_adjust_stroke(item_source, NR::expansion(i2root));
465 sp_item_adjust_pattern(item_source, i2root);
466 sp_item_adjust_gradient(item_source, i2root);
467 sp_item_adjust_livepatheffect(item_source, i2root);
469 Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
471 // remember important aspects of the source path, to be restored
472 gint pos = repr_source->position();
473 Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
474 gchar const *id = repr_source->attribute("id");
475 gchar const *style = repr_source->attribute("style");
476 gchar const *mask = repr_source->attribute("mask");
477 gchar const *clip_path = repr_source->attribute("clip-path");
479 // remove source paths
480 selection->clear();
481 for (GSList *l = il; l != NULL; l = l->next) {
482 // if this is the bottommost object,
483 if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
484 // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
485 SP_OBJECT(l->data)->deleteObject(false);
486 } else {
487 // delete the object for real, so that its clones can take appropriate action
488 SP_OBJECT(l->data)->deleteObject();
489 }
490 }
491 g_slist_free(il);
493 // premultiply by the inverse of parent's repr
494 SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
495 NR::Matrix local = from_2geom(sp_item_i2doc_affine(parent_item));
496 gchar *transform = sp_svg_transform_write(local.inverse());
498 // now that we have the result, add it on the canvas
499 if ( bop == bool_op_cut || bop == bool_op_slice ) {
500 int nbRP=0;
501 Path** resPath;
502 if ( bop == bool_op_slice ) {
503 // there are moveto's at each intersection, but it's still one unique path
504 // so break it down and add each subpath independently
505 // we could call break_apart to do this, but while we have the description...
506 resPath=res->SubPaths(nbRP, false);
507 } else {
508 // cut operation is a bit wicked: you need to keep holes
509 // that's why you needed the nesting
510 // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
511 // to get the path for each part of the polygon. that's why you need the nesting info:
512 // to know in wich subpath to add a subpath
513 resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
515 // cleaning
516 if ( conts ) free(conts);
517 if ( nesting ) free(nesting);
518 }
520 // add all the pieces resulting from cut or slice
521 for (int i=0;i<nbRP;i++) {
522 gchar *d = resPath[i]->svg_dump_path();
524 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
525 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
526 repr->setAttribute("style", style);
527 if (mask)
528 repr->setAttribute("mask", mask);
529 if (clip_path)
530 repr->setAttribute("clip-path", clip_path);
532 repr->setAttribute("d", d);
533 g_free(d);
535 // for slice, remove fill
536 if (bop == bool_op_slice) {
537 SPCSSAttr *css;
539 css = sp_repr_css_attr_new();
540 sp_repr_css_set_property(css, "fill", "none");
542 sp_repr_css_change(repr, css, "style");
544 sp_repr_css_attr_unref(css);
545 }
547 // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
548 // this means it's basically random which of the pieces inherits the original's id and clones
549 // a better algorithm might figure out e.g. the biggest piece
550 repr->setAttribute("id", id);
552 repr->setAttribute("transform", transform);
554 // add the new repr to the parent
555 parent->appendChild(repr);
557 // move to the saved position
558 repr->setPosition(pos > 0 ? pos : 0);
560 selection->add(repr);
561 Inkscape::GC::release(repr);
563 delete resPath[i];
564 }
565 if ( resPath ) free(resPath);
567 } else {
568 gchar *d = res->svg_dump_path();
570 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
571 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
572 repr->setAttribute("style", style);
574 if ( mask )
575 repr->setAttribute("mask", mask);
577 if ( clip_path )
578 repr->setAttribute("clip-path", clip_path);
580 repr->setAttribute("d", d);
581 g_free(d);
583 repr->setAttribute("transform", transform);
585 repr->setAttribute("id", id);
586 parent->appendChild(repr);
587 repr->setPosition(pos > 0 ? pos : 0);
589 selection->add(repr);
590 Inkscape::GC::release(repr);
591 }
593 g_free(transform);
595 if (verb != SP_VERB_NONE) {
596 sp_document_done(sp_desktop_document(desktop), verb, description);
597 }
599 delete res;
600 }
602 static
603 void sp_selected_path_outline_add_marker( SPObject *marker_object, Geom::Matrix marker_transform, NR::scale stroke_scale, NR::Matrix transform,
604 Inkscape::XML::Node *g_repr, Inkscape::XML::Document *xml_doc, SPDocument * doc )
605 {
606 SPMarker* marker = SP_MARKER (marker_object);
607 SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (marker_object));
609 NR::Matrix tr(from_2geom(marker_transform));
611 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
612 tr = stroke_scale * tr;
613 }
615 // total marker transform
616 tr = marker_item->transform * marker->c2p * tr * transform;
618 if (SP_OBJECT_REPR(marker_item)) {
619 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
620 g_repr->appendChild(m_repr);
621 SPItem *marker_item = (SPItem *) doc->getObjectByRepr(m_repr);
622 sp_item_write_transform(marker_item, m_repr, tr);
623 }
624 }
626 void
627 sp_selected_path_outline()
628 {
629 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
631 Inkscape::Selection *selection = sp_desktop_selection(desktop);
633 if (selection->isEmpty()) {
634 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
635 return;
636 }
638 bool did = false;
640 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
641 items != NULL;
642 items = items->next) {
644 SPItem *item = (SPItem *) items->data;
646 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
647 continue;
649 SPCurve *curve = NULL;
650 if (SP_IS_SHAPE(item)) {
651 curve = sp_shape_get_curve(SP_SHAPE(item));
652 if (curve == NULL)
653 continue;
654 }
655 if (SP_IS_TEXT(item)) {
656 curve = SP_TEXT(item)->getNormalizedBpath();
657 if (curve == NULL)
658 continue;
659 }
661 { // pas de stroke pas de chocolat
662 SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
663 gchar const *val = sp_repr_css_property(css, "stroke", NULL);
665 if (val == NULL || strcmp(val, "none") == 0) {
666 curve->unref();
667 continue;
668 }
669 }
671 // remember old stroke style, to be set on fill
672 SPCSSAttr *ncss;
673 {
674 SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
675 gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
676 gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
678 ncss = sp_repr_css_attr_new();
680 sp_repr_css_set_property(ncss, "stroke", "none");
681 sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
682 sp_repr_css_set_property(ncss, "fill", val);
683 if ( opac ) {
684 sp_repr_css_set_property(ncss, "fill-opacity", opac);
685 } else {
686 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
687 }
688 sp_repr_css_unset_property(ncss, "marker-start");
689 sp_repr_css_unset_property(ncss, "marker-mid");
690 sp_repr_css_unset_property(ncss, "marker-end");
691 }
693 NR::Matrix const transform(item->transform);
694 float const scale = NR::expansion(transform);
695 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
696 SPStyle *i_style = SP_OBJECT(item)->style;
697 gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
698 gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
700 float o_width, o_miter;
701 JoinType o_join;
702 ButtType o_butt;
704 {
705 int jointype, captype;
707 jointype = i_style->stroke_linejoin.computed;
708 captype = i_style->stroke_linecap.computed;
709 o_width = i_style->stroke_width.computed;
711 switch (jointype) {
712 case SP_STROKE_LINEJOIN_MITER:
713 o_join = join_pointy;
714 break;
715 case SP_STROKE_LINEJOIN_ROUND:
716 o_join = join_round;
717 break;
718 default:
719 o_join = join_straight;
720 break;
721 }
723 switch (captype) {
724 case SP_STROKE_LINECAP_SQUARE:
725 o_butt = butt_square;
726 break;
727 case SP_STROKE_LINECAP_ROUND:
728 o_butt = butt_round;
729 break;
730 default:
731 o_butt = butt_straight;
732 break;
733 }
735 if (o_width < 0.1)
736 o_width = 0.1;
737 o_miter = i_style->stroke_miterlimit.value * o_width;
738 }
740 Path *orig = Path_for_item(item, false);
741 if (orig == NULL) {
742 g_free(style);
743 curve->unref();
744 continue;
745 }
747 Path *res = new Path;
748 res->SetBackData(false);
750 if (i_style->stroke_dash.n_dash) {
751 // For dashed strokes, use Stroke method, because Outline can't do dashes
752 // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
754 orig->ConvertWithBackData(0.1);
756 orig->DashPolylineFromStyle(i_style, scale, 0);
758 Shape* theShape = new Shape;
759 orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
760 0.5 * o_miter);
761 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
763 Shape *theRes = new Shape;
765 theRes->ConvertToShape(theShape, fill_positive);
767 Path *originaux[1];
768 originaux[0] = res;
769 theRes->ConvertToForme(orig, 1, originaux);
771 res->Coalesce(5.0);
773 delete theShape;
774 delete theRes;
776 } else {
778 orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
780 orig->Coalesce(0.5 * o_width);
782 Shape *theShape = new Shape;
783 Shape *theRes = new Shape;
785 res->ConvertWithBackData(1.0);
786 res->Fill(theShape, 0);
787 theRes->ConvertToShape(theShape, fill_positive);
789 Path *originaux[1];
790 originaux[0] = res;
791 theRes->ConvertToForme(orig, 1, originaux);
793 delete theShape;
794 delete theRes;
795 }
797 if (orig->descr_cmd.size() <= 1) {
798 // ca a merd\8e, ou bien le resultat est vide
799 delete res;
800 delete orig;
801 g_free(style);
802 continue;
803 }
805 did = true;
807 // remember the position of the item
808 gint pos = SP_OBJECT_REPR(item)->position();
809 // remember parent
810 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
811 // remember id
812 char const *id = SP_OBJECT_REPR(item)->attribute("id");
814 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
816 SPDocument * doc = sp_desktop_document(desktop);
817 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
818 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
820 // restore old style
821 repr->setAttribute("style", style);
823 // set old stroke style on fill
824 sp_repr_css_change(repr, ncss, "style");
826 sp_repr_css_attr_unref(ncss);
828 gchar *str = orig->svg_dump_path();
829 repr->setAttribute("d", str);
830 g_free(str);
832 if (mask)
833 repr->setAttribute("mask", mask);
834 if (clip_path)
835 repr->setAttribute("clip-path", clip_path);
837 if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
839 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
840 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
842 // add the group to the parent
843 parent->appendChild(g_repr);
844 // move to the saved position
845 g_repr->setPosition(pos > 0 ? pos : 0);
847 g_repr->appendChild(repr);
848 repr->setAttribute("id", id);
849 SPItem *newitem = (SPItem *) doc->getObjectByRepr(repr);
850 sp_item_write_transform(newitem, repr, transform);
852 SPShape *shape = SP_SHAPE(item);
854 Geom::PathVector const & pathv = curve->get_pathvector();
855 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
856 if ( SPObject *marker_obj = shape->marker[SP_MARKER_LOC_START] ) {
857 Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
858 sp_selected_path_outline_add_marker( marker_obj, m,
859 NR::scale(i_style->stroke_width.computed), transform,
860 g_repr, xml_doc, doc );
861 }
863 if ( SPObject *marker_obj = shape->marker[SP_MARKER_LOC_MID] ) {
864 Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve
865 Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve
866 while (curve_it2 != path_it->end_default())
867 {
868 /* Put marker between curve_it1 and curve_it2.
869 * Loop to end_default (so including closing segment), because when a path is closed,
870 * there should be a midpoint marker between last segment and closing straight line segment
871 */
872 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
873 sp_selected_path_outline_add_marker( marker_obj, m,
874 NR::scale(i_style->stroke_width.computed), transform,
875 g_repr, xml_doc, doc );
877 ++curve_it1;
878 ++curve_it2;
879 }
880 }
882 if ( SPObject *marker_obj = shape->marker[SP_MARKER_LOC_END] ) {
883 Geom::Matrix const m (sp_shape_marker_get_transform_at_end(path_it->back_default()));
884 sp_selected_path_outline_add_marker( marker_obj, m,
885 NR::scale(i_style->stroke_width.computed), transform,
886 g_repr, xml_doc, doc );
887 }
888 }
890 selection->add(g_repr);
892 Inkscape::GC::release(g_repr);
895 } else {
897 // add the new repr to the parent
898 parent->appendChild(repr);
900 // move to the saved position
901 repr->setPosition(pos > 0 ? pos : 0);
903 repr->setAttribute("id", id);
905 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
906 sp_item_write_transform(newitem, repr, transform);
908 selection->add(repr);
910 }
912 Inkscape::GC::release(repr);
914 curve->unref();
915 selection->remove(item);
916 SP_OBJECT(item)->deleteObject(false);
918 }
920 delete res;
921 delete orig;
922 g_free(style);
924 }
926 if (did) {
927 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
928 _("Convert stroke to path"));
929 } else {
930 // TRANSLATORS: "to outline" means "to convert stroke to path"
931 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
932 return;
933 }
934 }
937 void
938 sp_selected_path_offset()
939 {
940 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
942 sp_selected_path_do_offset(true, prefOffset);
943 }
944 void
945 sp_selected_path_inset()
946 {
947 double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
949 sp_selected_path_do_offset(false, prefOffset);
950 }
952 void
953 sp_selected_path_offset_screen(double pixels)
954 {
955 sp_selected_path_do_offset(true, pixels / SP_ACTIVE_DESKTOP->current_zoom());
956 }
958 void
959 sp_selected_path_inset_screen(double pixels)
960 {
961 sp_selected_path_do_offset(false, pixels / SP_ACTIVE_DESKTOP->current_zoom());
962 }
965 void sp_selected_path_create_offset_object_zero()
966 {
967 sp_selected_path_create_offset_object(0, false);
968 }
970 void sp_selected_path_create_offset()
971 {
972 sp_selected_path_create_offset_object(1, false);
973 }
974 void sp_selected_path_create_inset()
975 {
976 sp_selected_path_create_offset_object(-1, false);
977 }
979 void sp_selected_path_create_updating_offset_object_zero()
980 {
981 sp_selected_path_create_offset_object(0, true);
982 }
984 void sp_selected_path_create_updating_offset()
985 {
986 sp_selected_path_create_offset_object(1, true);
987 }
988 void sp_selected_path_create_updating_inset()
989 {
990 sp_selected_path_create_offset_object(-1, true);
991 }
993 void
994 sp_selected_path_create_offset_object(int expand, bool updating)
995 {
996 Inkscape::Selection *selection;
997 Inkscape::XML::Node *repr;
998 SPItem *item;
999 SPCurve *curve;
1000 gchar *style, *str;
1001 SPDesktop *desktop;
1002 float o_width, o_miter;
1003 JoinType o_join;
1004 ButtType o_butt;
1006 curve = NULL;
1008 desktop = SP_ACTIVE_DESKTOP;
1010 selection = sp_desktop_selection(desktop);
1012 item = selection->singleItem();
1014 if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
1015 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
1016 return;
1017 }
1018 if (SP_IS_SHAPE(item))
1019 {
1020 curve = sp_shape_get_curve(SP_SHAPE(item));
1021 if (curve == NULL)
1022 return;
1023 }
1024 if (SP_IS_TEXT(item))
1025 {
1026 curve = SP_TEXT(item)->getNormalizedBpath();
1027 if (curve == NULL)
1028 return;
1029 }
1031 NR::Matrix const transform(item->transform);
1033 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1035 style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
1037 // remember the position of the item
1038 gint pos = SP_OBJECT_REPR(item)->position();
1039 // remember parent
1040 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1042 {
1043 SPStyle *i_style = SP_OBJECT(item)->style;
1044 int jointype, captype;
1046 jointype = i_style->stroke_linejoin.value;
1047 captype = i_style->stroke_linecap.value;
1048 o_width = i_style->stroke_width.computed;
1049 if (jointype == SP_STROKE_LINEJOIN_MITER)
1050 {
1051 o_join = join_pointy;
1052 }
1053 else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1054 {
1055 o_join = join_round;
1056 }
1057 else
1058 {
1059 o_join = join_straight;
1060 }
1061 if (captype == SP_STROKE_LINECAP_SQUARE)
1062 {
1063 o_butt = butt_square;
1064 }
1065 else if (captype == SP_STROKE_LINECAP_ROUND)
1066 {
1067 o_butt = butt_round;
1068 }
1069 else
1070 {
1071 o_butt = butt_straight;
1072 }
1074 {
1075 double prefOffset = 1.0;
1076 prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
1077 o_width = prefOffset;
1078 }
1080 if (o_width < 0.01)
1081 o_width = 0.01;
1082 o_miter = i_style->stroke_miterlimit.value * o_width;
1083 }
1085 Path *orig = Path_for_item(item, true, false);
1086 if (orig == NULL)
1087 {
1088 g_free(style);
1089 curve->unref();
1090 return;
1091 }
1093 Path *res = new Path;
1094 res->SetBackData(false);
1096 {
1097 Shape *theShape = new Shape;
1098 Shape *theRes = new Shape;
1100 orig->ConvertWithBackData(1.0);
1101 orig->Fill(theShape, 0);
1103 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1104 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1105 if (val && strcmp(val, "nonzero") == 0)
1106 {
1107 theRes->ConvertToShape(theShape, fill_nonZero);
1108 }
1109 else if (val && strcmp(val, "evenodd") == 0)
1110 {
1111 theRes->ConvertToShape(theShape, fill_oddEven);
1112 }
1113 else
1114 {
1115 theRes->ConvertToShape(theShape, fill_nonZero);
1116 }
1118 Path *originaux[1];
1119 originaux[0] = orig;
1120 theRes->ConvertToForme(res, 1, originaux);
1122 delete theShape;
1123 delete theRes;
1124 }
1126 curve->unref();
1128 if (res->descr_cmd.size() <= 1)
1129 {
1130 // pas vraiment de points sur le resultat
1131 // donc il ne reste rien
1132 sp_document_done(sp_desktop_document(desktop),
1133 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1134 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1135 (updating ? _("Create linked offset")
1136 : _("Create dynamic offset")));
1137 selection->clear();
1139 delete res;
1140 delete orig;
1141 g_free(style);
1142 return;
1143 }
1145 {
1146 gchar tstr[80];
1148 tstr[79] = '\0';
1150 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1151 repr = xml_doc->createElement("svg:path");
1152 repr->setAttribute("sodipodi:type", "inkscape:offset");
1153 sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1154 ? o_width
1155 : expand < 0
1156 ? -o_width
1157 : 0 ));
1159 str = res->svg_dump_path();
1160 repr->setAttribute("inkscape:original", str);
1161 g_free(str);
1163 if ( updating ) {
1164 char const *id = SP_OBJECT(item)->repr->attribute("id");
1165 char const *uri = g_strdup_printf("#%s", id);
1166 repr->setAttribute("xlink:href", uri);
1167 g_free((void *) uri);
1168 } else {
1169 repr->setAttribute("inkscape:href", NULL);
1170 }
1172 repr->setAttribute("style", style);
1174 // add the new repr to the parent
1175 parent->appendChild(repr);
1177 // move to the saved position
1178 repr->setPosition(pos > 0 ? pos : 0);
1180 SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1182 if ( updating ) {
1183 // on conserve l'original
1184 // we reapply the transform to the original (offset will feel it)
1185 sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1186 } else {
1187 // delete original, apply the transform to the offset
1188 SP_OBJECT(item)->deleteObject(false);
1189 sp_item_write_transform(nitem, repr, transform);
1190 }
1192 // The object just created from a temporary repr is only a seed.
1193 // We need to invoke its write which will update its real repr (in particular adding d=)
1194 SP_OBJECT(nitem)->updateRepr();
1196 Inkscape::GC::release(repr);
1198 selection->set(nitem);
1199 }
1201 sp_document_done(sp_desktop_document(desktop),
1202 (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1203 : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1204 (updating ? _("Create linked offset")
1205 : _("Create dynamic offset")));
1207 delete res;
1208 delete orig;
1210 g_free(style);
1211 }
1224 void
1225 sp_selected_path_do_offset(bool expand, double prefOffset)
1226 {
1227 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1229 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1231 if (selection->isEmpty()) {
1232 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1233 return;
1234 }
1236 bool did = false;
1238 for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1239 items != NULL;
1240 items = items->next) {
1242 SPItem *item = (SPItem *) items->data;
1244 if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1245 continue;
1247 SPCurve *curve = NULL;
1248 if (SP_IS_SHAPE(item)) {
1249 curve = sp_shape_get_curve(SP_SHAPE(item));
1250 if (curve == NULL)
1251 continue;
1252 }
1253 if (SP_IS_TEXT(item)) {
1254 curve = SP_TEXT(item)->getNormalizedBpath();
1255 if (curve == NULL)
1256 continue;
1257 }
1259 NR::Matrix const transform(item->transform);
1261 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1263 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1265 float o_width, o_miter;
1266 JoinType o_join;
1267 ButtType o_butt;
1269 {
1270 SPStyle *i_style = SP_OBJECT(item)->style;
1271 int jointype, captype;
1273 jointype = i_style->stroke_linejoin.value;
1274 captype = i_style->stroke_linecap.value;
1275 o_width = i_style->stroke_width.computed;
1277 switch (jointype) {
1278 case SP_STROKE_LINEJOIN_MITER:
1279 o_join = join_pointy;
1280 break;
1281 case SP_STROKE_LINEJOIN_ROUND:
1282 o_join = join_round;
1283 break;
1284 default:
1285 o_join = join_straight;
1286 break;
1287 }
1289 switch (captype) {
1290 case SP_STROKE_LINECAP_SQUARE:
1291 o_butt = butt_square;
1292 break;
1293 case SP_STROKE_LINECAP_ROUND:
1294 o_butt = butt_round;
1295 break;
1296 default:
1297 o_butt = butt_straight;
1298 break;
1299 }
1301 o_width = prefOffset;
1303 if (o_width < 0.1)
1304 o_width = 0.1;
1305 o_miter = i_style->stroke_miterlimit.value * o_width;
1306 }
1308 Path *orig = Path_for_item(item, false);
1309 if (orig == NULL) {
1310 g_free(style);
1311 curve->unref();
1312 continue;
1313 }
1315 Path *res = new Path;
1316 res->SetBackData(false);
1318 {
1319 Shape *theShape = new Shape;
1320 Shape *theRes = new Shape;
1322 orig->ConvertWithBackData(0.03);
1323 orig->Fill(theShape, 0);
1325 SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1326 gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1327 if (val && strcmp(val, "nonzero") == 0)
1328 {
1329 theRes->ConvertToShape(theShape, fill_nonZero);
1330 }
1331 else if (val && strcmp(val, "evenodd") == 0)
1332 {
1333 theRes->ConvertToShape(theShape, fill_oddEven);
1334 }
1335 else
1336 {
1337 theRes->ConvertToShape(theShape, fill_nonZero);
1338 }
1340 // et maintenant: offset
1341 // methode inexacte
1342 /* Path *originaux[1];
1343 originaux[0] = orig;
1344 theRes->ConvertToForme(res, 1, originaux);
1346 if (expand) {
1347 res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1348 } else {
1349 res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1350 }
1352 orig->ConvertWithBackData(1.0);
1353 orig->Fill(theShape, 0);
1354 theRes->ConvertToShape(theShape, fill_positive);
1355 originaux[0] = orig;
1356 theRes->ConvertToForme(res, 1, originaux);
1358 if (o_width >= 0.5) {
1359 // res->Coalesce(1.0);
1360 res->ConvertEvenLines(1.0);
1361 res->Simplify(1.0);
1362 } else {
1363 // res->Coalesce(o_width);
1364 res->ConvertEvenLines(1.0*o_width);
1365 res->Simplify(1.0 * o_width);
1366 } */
1367 // methode par makeoffset
1369 if (expand)
1370 {
1371 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1372 }
1373 else
1374 {
1375 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1376 }
1377 theRes->ConvertToShape(theShape, fill_positive);
1379 res->Reset();
1380 theRes->ConvertToForme(res);
1382 if (o_width >= 1.0)
1383 {
1384 res->ConvertEvenLines(1.0);
1385 res->Simplify(1.0);
1386 }
1387 else
1388 {
1389 res->ConvertEvenLines(1.0*o_width);
1390 res->Simplify(1.0 * o_width);
1391 }
1393 delete theShape;
1394 delete theRes;
1395 }
1397 did = true;
1399 curve->unref();
1400 // remember the position of the item
1401 gint pos = SP_OBJECT_REPR(item)->position();
1402 // remember parent
1403 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1404 // remember id
1405 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1407 selection->remove(item);
1408 SP_OBJECT(item)->deleteObject(false);
1410 if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1412 gchar tstr[80];
1414 tstr[79] = '\0';
1416 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1417 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1419 repr->setAttribute("style", style);
1421 gchar *str = res->svg_dump_path();
1422 repr->setAttribute("d", str);
1423 g_free(str);
1425 // add the new repr to the parent
1426 parent->appendChild(repr);
1428 // move to the saved position
1429 repr->setPosition(pos > 0 ? pos : 0);
1431 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1433 // reapply the transform
1434 sp_item_write_transform(newitem, repr, transform);
1436 repr->setAttribute("id", id);
1438 selection->add(repr);
1440 Inkscape::GC::release(repr);
1441 }
1443 delete orig;
1444 delete res;
1445 }
1447 if (did) {
1448 sp_document_done(sp_desktop_document(desktop),
1449 (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1450 (expand ? _("Outset path") : _("Inset path")));
1451 } else {
1452 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1453 return;
1454 }
1455 }
1458 static bool
1459 sp_selected_path_simplify_items(SPDesktop *desktop,
1460 Inkscape::Selection *selection, GSList *items,
1461 float threshold, bool justCoalesce,
1462 float angleLimit, bool breakableAngles,
1463 bool modifySelection);
1466 //return true if we changed something, else false
1467 bool
1468 sp_selected_path_simplify_item(SPDesktop *desktop,
1469 Inkscape::Selection *selection, SPItem *item,
1470 float threshold, bool justCoalesce,
1471 float angleLimit, bool breakableAngles,
1472 gdouble size, bool modifySelection)
1473 {
1474 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1475 return false;
1477 //If this is a group, do the children instead
1478 if (SP_IS_GROUP(item)) {
1479 GSList *items = sp_item_group_item_list(SP_GROUP(item));
1481 return sp_selected_path_simplify_items(desktop, selection, items,
1482 threshold, justCoalesce,
1483 angleLimit, breakableAngles,
1484 false);
1485 }
1488 SPCurve *curve = NULL;
1490 if (SP_IS_SHAPE(item)) {
1491 curve = sp_shape_get_curve(SP_SHAPE(item));
1492 if (!curve)
1493 return false;
1494 }
1496 if (SP_IS_TEXT(item)) {
1497 curve = SP_TEXT(item)->getNormalizedBpath();
1498 if (!curve)
1499 return false;
1500 }
1502 // save the transform, to re-apply it after simplification
1503 NR::Matrix const transform(item->transform);
1505 /*
1506 reset the transform, effectively transforming the item by transform.inverse();
1507 this is necessary so that the item is transformed twice back and forth,
1508 allowing all compensations to cancel out regardless of the preferences
1509 */
1510 sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1512 gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1513 gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1514 gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1516 Path *orig = Path_for_item(item, false);
1517 if (orig == NULL) {
1518 g_free(style);
1519 curve->unref();
1520 return false;
1521 }
1523 curve->unref();
1524 // remember the position of the item
1525 gint pos = SP_OBJECT_REPR(item)->position();
1526 // remember parent
1527 Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1528 // remember id
1529 char const *id = SP_OBJECT_REPR(item)->attribute("id");
1530 // remember path effect
1531 char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1533 //If a group was selected, to not change the selection list
1534 if (modifySelection)
1535 selection->remove(item);
1537 SP_OBJECT(item)->deleteObject(false);
1539 if ( justCoalesce ) {
1540 orig->Coalesce(threshold * size);
1541 } else {
1542 orig->ConvertEvenLines(threshold * size);
1543 orig->Simplify(threshold * size);
1544 }
1546 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1547 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1549 // restore style, mask and clip-path
1550 repr->setAttribute("style", style);
1551 g_free(style);
1553 if ( mask ) {
1554 repr->setAttribute("mask", mask);
1555 g_free(mask);
1556 }
1558 if ( clip_path ) {
1559 repr->setAttribute("clip-path", clip_path);
1560 g_free(clip_path);
1561 }
1563 // path
1564 gchar *str = orig->svg_dump_path();
1565 if (patheffect)
1566 repr->setAttribute("inkscape:original-d", str);
1567 else
1568 repr->setAttribute("d", str);
1569 g_free(str);
1571 // restore id
1572 repr->setAttribute("id", id);
1574 // add the new repr to the parent
1575 parent->appendChild(repr);
1577 // move to the saved position
1578 repr->setPosition(pos > 0 ? pos : 0);
1580 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1582 // reapply the transform
1583 sp_item_write_transform(newitem, repr, transform);
1585 // restore path effect
1586 repr->setAttribute("inkscape:path-effect", patheffect);
1588 //If we are not in a selected group
1589 if (modifySelection)
1590 selection->add(repr);
1592 Inkscape::GC::release(repr);
1594 // clean up
1595 if (orig) delete orig;
1597 return true;
1598 }
1601 bool
1602 sp_selected_path_simplify_items(SPDesktop *desktop,
1603 Inkscape::Selection *selection, GSList *items,
1604 float threshold, bool justCoalesce,
1605 float angleLimit, bool breakableAngles,
1606 bool modifySelection)
1607 {
1608 bool simplifyIndividualPaths =
1609 (bool) prefs_get_int_attribute("options.simplifyindividualpaths", "value", 0);
1611 gchar *simplificationType;
1612 if (simplifyIndividualPaths) {
1613 simplificationType = _("Simplifying paths (separately):");
1614 } else {
1615 simplificationType = _("Simplifying paths:");
1616 }
1618 bool didSomething = false;
1620 NR::Maybe<NR::Rect> selectionBbox = selection->bounds();
1621 if (!selectionBbox) {
1622 return false;
1623 }
1624 gdouble selectionSize = L2(selectionBbox->dimensions());
1626 gdouble simplifySize = selectionSize;
1628 int pathsSimplified = 0;
1629 int totalPathCount = g_slist_length(items);
1631 // set "busy" cursor
1632 desktop->setWaitingCursor();
1634 for (; items != NULL; items = items->next) {
1635 SPItem *item = (SPItem *) items->data;
1637 if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1638 continue;
1640 if (simplifyIndividualPaths) {
1641 NR::Maybe<NR::Rect> itemBbox = item->getBounds(from_2geom(sp_item_i2d_affine(item)));
1642 if (itemBbox) {
1643 simplifySize = L2(itemBbox->dimensions());
1644 } else {
1645 simplifySize = 0;
1646 }
1647 }
1649 pathsSimplified++;
1651 if (pathsSimplified % 20 == 0) {
1652 gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."), simplificationType, pathsSimplified, totalPathCount);
1653 desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1654 }
1656 didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1657 threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1658 }
1660 desktop->clearWaitingCursor();
1662 if (pathsSimplified > 20) {
1663 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1664 }
1666 return didSomething;
1667 }
1669 void
1670 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1671 float angleLimit, bool breakableAngles)
1672 {
1673 SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1675 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1677 if (selection->isEmpty()) {
1678 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1679 _("Select <b>path(s)</b> to simplify."));
1680 return;
1681 }
1683 GSList *items = g_slist_copy((GSList *) selection->itemList());
1685 bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1686 items, threshold,
1687 justCoalesce,
1688 angleLimit,
1689 breakableAngles, true);
1691 if (didSomething)
1692 sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1693 _("Simplify"));
1694 else
1695 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1697 }
1700 // globals for keeping track of accelerated simplify
1701 static double previousTime = 0.0;
1702 static gdouble simplifyMultiply = 1.0;
1704 void
1705 sp_selected_path_simplify(void)
1706 {
1707 gdouble simplifyThreshold =
1708 prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1709 bool simplifyJustCoalesce =
1710 (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1712 //Get the current time
1713 GTimeVal currentTimeVal;
1714 g_get_current_time(¤tTimeVal);
1715 double currentTime = currentTimeVal.tv_sec * 1000000 +
1716 currentTimeVal.tv_usec;
1718 //Was the previous call to this function recent? (<0.5 sec)
1719 if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1721 // add to the threshold 1/2 of its original value
1722 simplifyMultiply += 0.5;
1723 simplifyThreshold *= simplifyMultiply;
1725 } else {
1726 // reset to the default
1727 simplifyMultiply = 1;
1728 }
1730 //remember time for next call
1731 previousTime = currentTime;
1733 //g_print("%g\n", simplify_threshold);
1735 //Make the actual call
1736 sp_selected_path_simplify_selection(simplifyThreshold,
1737 simplifyJustCoalesce, 0.0, false);
1738 }
1742 // fonctions utilitaires
1744 bool
1745 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1746 {
1747 if (who == NULL || a == NULL)
1748 return false;
1749 if (who == a)
1750 return true;
1751 return Ancetre(sp_repr_parent(a), who);
1752 }
1754 Path *
1755 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1756 {
1757 SPCurve *curve = curve_for_item(item);
1758 if (curve == NULL) {
1759 return NULL;
1760 }
1762 Geom::PathVector pathv = pathvector_for_curve(item, curve, doTransformation, transformFull);
1764 Path *dest = new Path;
1765 dest->LoadPathVector(pathv);
1767 curve->unref();
1769 return dest;
1770 }
1772 /*
1773 * This function always returns a new NArtBpath, the caller must g_free the returned path!
1774 */
1775 NArtBpath *
1776 bpath_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull)
1777 {
1778 if (curve == NULL)
1779 return NULL;
1781 NArtBpath *bpath = BPath_from_2GeomPath(curve->get_pathvector());
1782 if (bpath == NULL) {
1783 return NULL;
1784 }
1786 NArtBpath *new_bpath; // we will get a duplicate which has to be freed at some point!
1787 if (doTransformation) {
1788 if (transformFull) {
1789 new_bpath = nr_artpath_affine(bpath, from_2geom(sp_item_i2doc_affine(item)));
1790 } else {
1791 new_bpath = nr_artpath_affine(bpath, item->transform);
1792 }
1793 } else {
1794 new_bpath = nr_artpath_affine(bpath, NR::identity());
1795 }
1797 g_free(bpath);
1798 return new_bpath;
1799 }
1801 /*
1802 * NOTE: Returns empty pathvector if curve == NULL
1803 * TODO: see if calling this method can be optimized. All the pathvector copying might be slow.
1804 */
1805 Geom::PathVector
1806 pathvector_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull)
1807 {
1808 if (curve == NULL)
1809 return Geom::PathVector();
1811 if (doTransformation) {
1812 if (transformFull) {
1813 return (curve->get_pathvector()) * sp_item_i2doc_affine(item);
1814 } else {
1815 return (curve->get_pathvector()) * to_2geom(item->transform);
1816 }
1817 } else {
1818 return curve->get_pathvector();
1819 }
1820 }
1822 SPCurve* curve_for_item(SPItem *item)
1823 {
1824 if (!item)
1825 return NULL;
1827 SPCurve *curve = NULL;
1829 if (SP_IS_SHAPE(item)) {
1830 if (SP_IS_PATH(item)) {
1831 curve = sp_path_get_curve_for_edit(SP_PATH(item));
1832 } else {
1833 curve = sp_shape_get_curve(SP_SHAPE(item));
1834 }
1835 }
1836 else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
1837 {
1838 curve = te_get_layout(item)->convertToCurves();
1839 }
1840 else if (SP_IS_IMAGE(item))
1841 {
1842 curve = sp_image_get_curve(SP_IMAGE(item));
1843 }
1845 return curve; // do not forget to unref the curve at some point!
1846 }
1848 Path *bpath_to_Path(NArtBpath const *bpath) {
1849 Path *dest = new Path;
1850 dest->SetBackData(false);
1851 {
1852 int i;
1853 bool closed = false;
1854 float lastX = 0.0;
1855 float lastY = 0.0;
1857 for (i = 0; bpath[i].code != NR_END; i++) {
1858 switch (bpath[i].code) {
1859 case NR_LINETO:
1860 lastX = bpath[i].x3;
1861 lastY = bpath[i].y3;
1862 {
1863 NR::Point tmp(lastX, lastY);
1864 dest->LineTo(tmp);
1865 }
1866 break;
1868 case NR_CURVETO:
1869 {
1870 NR::Point tmp, tms, tme;
1871 tmp[0]=bpath[i].x3;
1872 tmp[1]=bpath[i].y3;
1873 tms[0]=3 * (bpath[i].x1 - lastX);
1874 tms[1]=3 * (bpath[i].y1 - lastY);
1875 tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1876 tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1877 dest->CubicTo(tmp,tms,tme);
1878 }
1879 lastX = bpath[i].x3;
1880 lastY = bpath[i].y3;
1881 break;
1883 case NR_MOVETO_OPEN:
1884 case NR_MOVETO:
1885 if (closed)
1886 dest->Close();
1887 closed = (bpath[i].code == NR_MOVETO);
1888 lastX = bpath[i].x3;
1889 lastY = bpath[i].y3;
1890 {
1891 NR::Point tmp(lastX, lastY);
1892 dest->MoveTo(tmp);
1893 }
1894 break;
1895 default:
1896 break;
1897 }
1898 }
1899 if (closed)
1900 dest->Close();
1901 }
1902 return dest;
1903 }
1905 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p, unsigned seg)
1906 {
1907 //get nearest position on path
1908 Path::cut_position pos = path->PointToCurvilignPosition(p, seg);
1909 return pos;
1910 }
1912 NR::Point get_point_on_Path(Path *path, int piece, double t)
1913 {
1914 NR::Point p;
1915 path->PointAt(piece, t, p);
1916 return p;
1917 }
1920 /*
1921 Local Variables:
1922 mode:c++
1923 c-file-style:"stroustrup"
1924 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1925 indent-tabs-mode:nil
1926 fill-column:99
1927 End:
1928 */
1929 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :