src/splivarot.cpp

   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  */
  11
  12 /*
  13  * contains lots of stitched pieces of path-chemistry.c
  14  */
  15
  16 #ifdef HAVE_CONFIG_H
  17 # include <config.h>
  18 #endif
  19
  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 "document.h"
  37 #include "message-stack.h"
  38 #include "selection.h"
  39 #include "desktop-handles.h"
  40 #include "desktop.h"
  41 #include "display/canvas-bpath.h"
  42 #include "display/curve.h"
  43 #include <glibmm/i18n.h>
  44 #include "preferences.h"
  45
  46 #include "xml/repr.h"
  47 #include "xml/repr-sorting.h"
  48 #include <2geom/pathvector.h>
  49 #include <libnr/nr-scale-matrix-ops.h>
  50 #include "helper/geom.h"
  51
  52 #include "livarot/Path.h"
  53 #include "livarot/Shape.h"
  54
  55 #include "splivarot.h"
  56
  57 bool   Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
  58
  59 void sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
  60 void sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset);
  61 void sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating);
  62
  63 void
  64 sp_selected_path_union(SPDesktop *desktop)
  65 {
  66     sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
  67 }
  68
  69 void
  70 sp_selected_path_union_skip_undo(SPDesktop *desktop)
  71 {
  72     sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_NONE, _("Union"));
  73 }
  74
  75 void
  76 sp_selected_path_intersect(SPDesktop *desktop)
  77 {
  78     sp_selected_path_boolop(desktop, bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
  79 }
  80
  81 void
  82 sp_selected_path_diff(SPDesktop *desktop)
  83 {
  84     sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
  85 }
  86
  87 void
  88 sp_selected_path_diff_skip_undo(SPDesktop *desktop)
  89 {
  90     sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_NONE, _("Difference"));
  91 }
  92
  93 void
  94 sp_selected_path_symdiff(SPDesktop *desktop)
  95 {
  96     sp_selected_path_boolop(desktop, bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
  97 }
  98 void
  99 sp_selected_path_cut(SPDesktop *desktop)
 100 {
 101     sp_selected_path_boolop(desktop, bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
 102 }
 103 void
 104 sp_selected_path_slice(SPDesktop *desktop)
 105 {
 106     sp_selected_path_boolop(desktop, bool_op_slice, SP_VERB_SELECTION_SLICE,  _("Cut path"));
 107 }
 108
 109
 110 // boolean operations
 111 // take the source paths from the file, do the operation, delete the originals and add the results
 112 void
 113 sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb, const Glib::ustring description)
 114 {
 115     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 116
 117     GSList *il = (GSList *) selection->itemList();
 118
 119     // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
 120     if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
 121         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
 122         return;
 123     }
 124     else if ( g_slist_length(il) < 1 ) {
 125         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
 126         return;
 127     }
 128
 129     if (g_slist_length(il) > 2) {
 130         if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
 131             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, division, or path cut."));
 132             return;
 133         }
 134     }
 135
 136     // reverseOrderForOp marks whether the order of the list is the top->down order
 137     // it's only used when there are 2 objects, and for operations who need to know the
 138     // topmost object (differences, cuts)
 139     bool reverseOrderForOp = false;
 140
 141     if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice) {
 142         // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
 143         Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
 144         Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
 145
 146         if (a == NULL || b == NULL) {
 147             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
 148             return;
 149         }
 150
 151         if (Ancetre(a, b)) {
 152             // a is the parent of b, already in the proper order
 153         } else if (Ancetre(b, a)) {
 154             // reverse order
 155             reverseOrderForOp = true;
 156         } else {
 157
 158             // objects are not in parent/child relationship;
 159             // find their lowest common ancestor
 160             Inkscape::XML::Node *dad = LCA(a, b);
 161             if (dad == NULL) {
 162                 desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Unable to determine the <b>z-order</b> of the objects selected for difference, XOR, division, or path cut."));
 163                 return;
 164             }
 165
 166             // find the children of the LCA that lead from it to the a and b
 167             Inkscape::XML::Node *as = AncetreFils(a, dad);
 168             Inkscape::XML::Node *bs = AncetreFils(b, dad);
 169
 170             // find out which comes first
 171             for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
 172                 if (child == as) {
 173                     /* a first, so reverse. */
 174                     reverseOrderForOp = true;
 175                     break;
 176                 }
 177                 if (child == bs)
 178                     break;
 179             }
 180         }
 181     }
 182
 183     il = g_slist_copy(il);
 184
 185     // first check if all the input objects have shapes
 186     // otherwise bail out
 187     for (GSList *l = il; l != NULL; l = l->next)
 188     {
 189         SPItem *item = SP_ITEM(l->data);
 190         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
 191         {
 192             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
 193             g_slist_free(il);
 194             return;
 195         }
 196     }
 197
 198     // extract the livarot Paths from the source objects
 199     // also get the winding rule specified in the style
 200     int nbOriginaux = g_slist_length(il);
 201     std::vector<Path *> originaux(nbOriginaux);
 202     std::vector<FillRule> origWind(nbOriginaux);
 203     int curOrig;
 204     {
 205         curOrig = 0;
 206         for (GSList *l = il; l != NULL; l = l->next)
 207         {
 208             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
 209             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
 210             if (val && strcmp(val, "nonzero") == 0) {
 211                 origWind[curOrig]= fill_nonZero;
 212             } else if (val && strcmp(val, "evenodd") == 0) {
 213                 origWind[curOrig]= fill_oddEven;
 214             } else {
 215                 origWind[curOrig]= fill_nonZero;
 216             }
 217
 218             originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
 219             if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
 220             {
 221                 for (int i = curOrig; i >= 0; i--) delete originaux[i];
 222                 g_slist_free(il);
 223                 return;
 224             }
 225             curOrig++;
 226         }
 227     }
 228     // reverse if needed
 229     // note that the selection list keeps its order
 230     if ( reverseOrderForOp ) {
 231         Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 232         FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
 233     }
 234
 235     // and work
 236     // some temporary instances, first
 237     Shape *theShapeA = new Shape;
 238     Shape *theShapeB = new Shape;
 239     Shape *theShape = new Shape;
 240     Path *res = new Path;
 241     res->SetBackData(false);
 242     Path::cut_position  *toCut=NULL;
 243     int                  nbToCut=0;
 244
 245     if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
 246         // true boolean op
 247         // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
 248         originaux[0]->ConvertWithBackData(0.1);
 249
 250         originaux[0]->Fill(theShape, 0);
 251
 252         theShapeA->ConvertToShape(theShape, origWind[0]);
 253
 254         curOrig = 1;
 255         for (GSList *l = il->next; l != NULL; l = l->next) {
 256             originaux[curOrig]->ConvertWithBackData(0.1);
 257
 258             originaux[curOrig]->Fill(theShape, curOrig);
 259
 260             theShapeB->ConvertToShape(theShape, origWind[curOrig]);
 261
 262             // les elements arrivent en ordre inverse dans la liste
 263             theShape->Booleen(theShapeB, theShapeA, bop);
 264
 265             {
 266                 Shape *swap = theShape;
 267                 theShape = theShapeA;
 268                 theShapeA = swap;
 269             }
 270             curOrig++;
 271         }
 272
 273         {
 274             Shape *swap = theShape;
 275             theShape = theShapeA;
 276             theShapeA = swap;
 277         }
 278
 279     } else if ( bop == bool_op_cut ) {
 280         // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
 281         // technically, the cut path is not necessarily a polygon (thus has no winding rule)
 282         // it is just uncrossed, and cleaned from duplicate edges and points
 283         // then it's fed to Booleen() which will uncross it against the other path
 284         // then comes the trick: each edge of the cut path is duplicated (one in each direction),
 285         // thus making a polygon. the weight of the edges of the cut are all 0, but
 286         // the Booleen need to invert the ones inside the source polygon (for the subsequent
 287         // ConvertToForme)
 288
 289         // the cut path needs to have the highest pathID in the back data
 290         // that's how the Booleen() function knows it's an edge of the cut
 291
 292         // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
 293         // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
 294         // left it at 1.0. Investigate replacing this by a combination of difference and
 295         // intersection of the same two paths. -- bb
 296         {
 297             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 298             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 299         }
 300         originaux[0]->ConvertWithBackData(1.0);
 301
 302         originaux[0]->Fill(theShape, 0);
 303
 304         theShapeA->ConvertToShape(theShape, origWind[0]);
 305
 306         originaux[1]->ConvertWithBackData(1.0);
 307
 308         originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
 309
 310         theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
 311
 312         // les elements arrivent en ordre inverse dans la liste
 313         theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
 314
 315     } else if ( bop == bool_op_slice ) {
 316         // slice is not really a boolean operation
 317         // you just put the 2 shapes in a single polygon, uncross it
 318         // the points where the degree is > 2 are intersections
 319         // just check it's an intersection on the path you want to cut, and keep it
 320         // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
 321         // make new subpath at each one of these positions
 322         // inversion pour l'op\8eration
 323         {
 324             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 325             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 326         }
 327         originaux[0]->ConvertWithBackData(1.0);
 328
 329         originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
 330
 331         originaux[1]->ConvertWithBackData(1.0);
 332
 333         originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
 334
 335         theShape->ConvertToShape(theShapeA, fill_justDont);
 336
 337         if ( theShape->hasBackData() ) {
 338             // should always be the case, but ya never know
 339             {
 340                 for (int i = 0; i < theShape->numberOfPoints(); i++) {
 341                     if ( theShape->getPoint(i).totalDegree() > 2 ) {
 342                         // possibly an intersection
 343                         // we need to check that at least one edge from the source path is incident to it
 344                         // before we declare it's an intersection
 345                         int cb = theShape->getPoint(i).incidentEdge[FIRST];
 346                         int   nbOrig=0;
 347                         int   nbOther=0;
 348                         int   piece=-1;
 349                         float t=0.0;
 350                         while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
 351                             if ( theShape->ebData[cb].pathID == 0 ) {
 352                                 // the source has an edge incident to the point, get its position on the path
 353                                 piece=theShape->ebData[cb].pieceID;
 354                                 if ( theShape->getEdge(cb).st == i ) {
 355                                     t=theShape->ebData[cb].tSt;
 356                                 } else {
 357                                     t=theShape->ebData[cb].tEn;
 358                                 }
 359                                 nbOrig++;
 360                             }
 361                             if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
 362                             cb=theShape->NextAt(i, cb);
 363                         }
 364                         if ( nbOrig > 0 && nbOther > 0 ) {
 365                             // point incident to both path and cut: an intersection
 366                             // note that you only keep one position on the source; you could have degenerate
 367                             // cases where the source crosses itself at this point, and you wouyld miss an intersection
 368                             toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
 369                             toCut[nbToCut].piece=piece;
 370                             toCut[nbToCut].t=t;
 371                             nbToCut++;
 372                         }
 373                     }
 374                 }
 375             }
 376             {
 377                 // i think it's useless now
 378                 int i = theShape->numberOfEdges() - 1;
 379                 for (;i>=0;i--) {
 380                     if ( theShape->ebData[i].pathID == 1 ) {
 381                         theShape->SubEdge(i);
 382                     }
 383                 }
 384             }
 385
 386         }
 387     }
 388
 389     int*    nesting=NULL;
 390     int*    conts=NULL;
 391     int     nbNest=0;
 392     // pour compenser le swap juste avant
 393     if ( bop == bool_op_slice ) {
 394 //    theShape->ConvertToForme(res, nbOriginaux, originaux, true);
 395 //    res->ConvertForcedToMoveTo();
 396         res->Copy(originaux[0]);
 397         res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
 398         free(toCut);
 399     } else if ( bop == bool_op_cut ) {
 400         // il faut appeler pour desallouer PointData (pas vital, mais bon)
 401         // the Booleen() function did not deallocated the point_data array in theShape, because this
 402         // function needs it.
 403         // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
 404         // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
 405         theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
 406     } else {
 407         theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
 408     }
 409
 410     delete theShape;
 411     delete theShapeA;
 412     delete theShapeB;
 413     for (int i = 0; i < nbOriginaux; i++)  delete originaux[i];
 414
 415     if (res->descr_cmd.size() <= 1)
 416     {
 417         // only one command, presumably a moveto: it isn't a path
 418         for (GSList *l = il; l != NULL; l = l->next)
 419         {
 420             SP_OBJECT(l->data)->deleteObject();
 421         }
 422         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 423                          description);
 424         selection->clear();
 425
 426         delete res;
 427         g_slist_free(il);
 428         return;
 429     }
 430
 431     // get the source path object
 432     SPObject *source;
 433     if ( bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
 434         if (reverseOrderForOp) {
 435              source = SP_OBJECT(il->data);
 436         } else {
 437              source = SP_OBJECT(il->next->data);
 438         }
 439     } else {
 440         // find out the bottom object
 441         GSList *sorted = g_slist_copy((GSList *) selection->reprList());
 442
 443         sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
 444
 445         source = sp_desktop_document(desktop)->
 446             getObjectByRepr((Inkscape::XML::Node *)sorted->data);
 447
 448         g_slist_free(sorted);
 449     }
 450
 451     // adjust style properties that depend on a possible transform in the source object in order
 452     // to get a correct style attribute for the new path
 453     SPItem* item_source = SP_ITEM(source);
 454     Geom::Matrix i2doc(sp_item_i2doc_affine(item_source));
 455     sp_item_adjust_stroke(item_source, i2doc.descrim());
 456     sp_item_adjust_pattern(item_source, i2doc);
 457     sp_item_adjust_gradient(item_source, i2doc);
 458     sp_item_adjust_livepatheffect(item_source, i2doc);
 459
 460     Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
 461
 462     // remember important aspects of the source path, to be restored
 463     gint pos = repr_source->position();
 464     Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
 465     gchar const *id = repr_source->attribute("id");
 466     gchar const *style = repr_source->attribute("style");
 467     gchar const *mask = repr_source->attribute("mask");
 468     gchar const *clip_path = repr_source->attribute("clip-path");
 469     gchar *title = source->title();
 470     gchar *desc = source->desc();
 471     // remove source paths
 472     selection->clear();
 473     for (GSList *l = il; l != NULL; l = l->next) {
 474         // if this is the bottommost object,
 475         if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
 476             // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
 477             SP_OBJECT(l->data)->deleteObject(false);
 478         } else {
 479             // delete the object for real, so that its clones can take appropriate action
 480             SP_OBJECT(l->data)->deleteObject();
 481         }
 482     }
 483     g_slist_free(il);
 484
 485     // premultiply by the inverse of parent's repr
 486     SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
 487     Geom::Matrix local (sp_item_i2doc_affine(parent_item));
 488     gchar *transform = sp_svg_transform_write(local.inverse());
 489
 490     // now that we have the result, add it on the canvas
 491     if ( bop == bool_op_cut || bop == bool_op_slice ) {
 492         int    nbRP=0;
 493         Path** resPath;
 494         if ( bop == bool_op_slice ) {
 495             // there are moveto's at each intersection, but it's still one unique path
 496             // so break it down and add each subpath independently
 497             // we could call break_apart to do this, but while we have the description...
 498             resPath=res->SubPaths(nbRP, false);
 499         } else {
 500             // cut operation is a bit wicked: you need to keep holes
 501             // that's why you needed the nesting
 502             // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
 503             // to get the path for each part of the polygon. that's why you need the nesting info:
 504             // to know in wich subpath to add a subpath
 505             resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
 506
 507             // cleaning
 508             if ( conts ) free(conts);
 509             if ( nesting ) free(nesting);
 510         }
 511
 512         // add all the pieces resulting from cut or slice
 513         for (int i=0;i<nbRP;i++) {
 514             gchar *d = resPath[i]->svg_dump_path();
 515
 516             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 517             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
 518             repr->setAttribute("style", style);
 519             if (mask)
 520                 repr->setAttribute("mask", mask);
 521             if (clip_path)
 522                 repr->setAttribute("clip-path", clip_path);
 523
 524             repr->setAttribute("d", d);
 525             g_free(d);
 526
 527             // for slice, remove fill
 528             if (bop == bool_op_slice) {
 529                 SPCSSAttr *css;
 530
 531                 css = sp_repr_css_attr_new();
 532                 sp_repr_css_set_property(css, "fill", "none");
 533
 534                 sp_repr_css_change(repr, css, "style");
 535
 536                 sp_repr_css_attr_unref(css);
 537             }
 538
 539             // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
 540             // this means it's basically random which of the pieces inherits the original's id and clones
 541             // a better algorithm might figure out e.g. the biggest piece
 542             repr->setAttribute("id", id);
 543
 544             repr->setAttribute("transform", transform);
 545
 546             // add the new repr to the parent
 547             parent->appendChild(repr);
 548
 549             // move to the saved position
 550             repr->setPosition(pos > 0 ? pos : 0);
 551
 552             selection->add(repr);
 553             Inkscape::GC::release(repr);
 554
 555             delete resPath[i];
 556         }
 557         if ( resPath ) free(resPath);
 558
 559     } else {
 560         gchar *d = res->svg_dump_path();
 561
 562         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 563         Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
 564         repr->setAttribute("style", style);
 565
 566         if ( mask )
 567             repr->setAttribute("mask", mask);
 568
 569         if ( clip_path )
 570             repr->setAttribute("clip-path", clip_path);
 571
 572         repr->setAttribute("d", d);
 573         g_free(d);
 574
 575         repr->setAttribute("transform", transform);
 576
 577         repr->setAttribute("id", id);
 578         parent->appendChild(repr);
 579         if (title) {
 580                 sp_desktop_document(desktop)->getObjectByRepr(repr)->setTitle(title);
 581         }
 582         if (desc) {
 583                 sp_desktop_document(desktop)->getObjectByRepr(repr)->setDesc(desc);
 584         }
 585                 repr->setPosition(pos > 0 ? pos : 0);
 586
 587         selection->add(repr);
 588         Inkscape::GC::release(repr);
 589     }
 590
 591     g_free(transform);
 592     if (title) g_free(title);
 593     if (desc) g_free(desc);
 594
 595     if (verb != SP_VERB_NONE) {
 596         sp_document_done(sp_desktop_document(desktop), verb, description);
 597     }
 598
 599     delete res;
 600 }
 601
 602 static
 603 void sp_selected_path_outline_add_marker( SPObject *marker_object, Geom::Matrix marker_transform,
 604                                           Geom::Scale stroke_scale, Geom::Matrix transform,
 605                                           Inkscape::XML::Node *g_repr, Inkscape::XML::Document *xml_doc, SPDocument * doc )
 606 {
 607     SPMarker* marker = SP_MARKER (marker_object);
 608     SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (marker_object));
 609
 610     Geom::Matrix tr(marker_transform);
 611
 612     if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
 613         tr = stroke_scale * tr;
 614     }
 615
 616     // total marker transform
 617     tr = marker_item->transform * marker->c2p * tr * transform;
 618
 619     if (SP_OBJECT_REPR(marker_item)) {
 620         Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
 621         g_repr->appendChild(m_repr);
 622         SPItem *marker_item = (SPItem *) doc->getObjectByRepr(m_repr);
 623         sp_item_write_transform(marker_item, m_repr, tr);
 624     }
 625 }
 626
 627 static
 628 void item_outline_add_marker( SPObject const *marker_object, Geom::Matrix marker_transform,
 629                               Geom::Scale stroke_scale, Geom::PathVector* pathv_in )
 630 {
 631     SPMarker* marker = SP_MARKER (marker_object);
 632     SPItem* marker_item = sp_item_first_item_child(SP_OBJECT(marker_object));
 633
 634     Geom::Matrix tr(marker_transform);
 635     if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
 636         tr = stroke_scale * tr;
 637     }
 638     // total marker transform
 639     tr = marker_item->transform * marker->c2p * tr;
 640
 641     Geom::PathVector* marker_pathv = item_outline(marker_item);
 642
 643     if (marker_pathv) {
 644         for (unsigned int j=0; j < marker_pathv->size(); j++) {
 645             pathv_in->push_back((*marker_pathv)[j] * tr);
 646         }
 647         delete marker_pathv;
 648     }
 649 }
 650
 651 /**
 652  *  Returns a pathvector that is the outline of the stroked item, with markers.
 653  *  item must be SPShape of SPText.
 654  */
 655 Geom::PathVector* item_outline(SPItem const *item)
 656 {
 657     Geom::PathVector *ret_pathv = NULL;
 658
 659     if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 660         return ret_pathv;
 661
 662     // no stroke: no outline
 663     if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
 664         return ret_pathv;
 665     }
 666
 667     SPCurve *curve = NULL;
 668     if (SP_IS_SHAPE(item)) {
 669         curve = sp_shape_get_curve(SP_SHAPE(item));
 670     } else if (SP_IS_TEXT(item)) {
 671         curve = SP_TEXT(item)->getNormalizedBpath();
 672     }
 673     if (curve == NULL) {
 674         return ret_pathv;
 675     }
 676
 677     if (curve->get_pathvector().empty()) {
 678         return ret_pathv;
 679     }
 680
 681     // remember old stroke style, to be set on fill
 682     SPStyle *i_style = SP_OBJECT_STYLE(item);
 683
 684     Geom::Matrix const transform(item->transform);
 685     float const scale = transform.descrim();
 686
 687     float o_width, o_miter;
 688     JoinType o_join;
 689     ButtType o_butt;
 690     {
 691         o_width = i_style->stroke_width.computed;
 692         if (o_width < 0.1) {
 693             o_width = 0.1;
 694         }
 695         o_miter = i_style->stroke_miterlimit.value * o_width;
 696
 697         switch (i_style->stroke_linejoin.computed) {
 698             case SP_STROKE_LINEJOIN_MITER:
 699                 o_join = join_pointy;
 700                 break;
 701             case SP_STROKE_LINEJOIN_ROUND:
 702                 o_join = join_round;
 703                 break;
 704             default:
 705                 o_join = join_straight;
 706                 break;
 707         }
 708
 709         switch (i_style->stroke_linecap.computed) {
 710             case SP_STROKE_LINECAP_SQUARE:
 711                 o_butt = butt_square;
 712                 break;
 713             case SP_STROKE_LINECAP_ROUND:
 714                 o_butt = butt_round;
 715                 break;
 716             default:
 717                 o_butt = butt_straight;
 718                 break;
 719         }
 720     }
 721
 722     // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
 723     Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curve->get_pathvector() );
 724
 725     Path *orig = new Path;
 726     orig->LoadPathVector(pathv);
 727
 728     Path *res = new Path;
 729     res->SetBackData(false);
 730
 731     if (i_style->stroke_dash.n_dash) {
 732         // For dashed strokes, use Stroke method, because Outline can't do dashes
 733         // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
 734
 735         orig->ConvertWithBackData(0.1);
 736
 737         orig->DashPolylineFromStyle(i_style, scale, 0);
 738
 739         Shape* theShape = new Shape;
 740         orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
 741                      0.5 * o_miter);
 742         orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 743
 744         Shape *theRes = new Shape;
 745
 746         theRes->ConvertToShape(theShape, fill_positive);
 747
 748         Path *originaux[1];
 749         originaux[0] = res;
 750         theRes->ConvertToForme(orig, 1, originaux);
 751
 752         res->Coalesce(5.0);
 753
 754         delete theShape;
 755         delete theRes;
 756     } else {
 757         orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 758
 759         orig->Coalesce(0.5 * o_width);
 760
 761         Shape *theShape = new Shape;
 762         Shape *theRes = new Shape;
 763
 764         res->ConvertWithBackData(1.0);
 765         res->Fill(theShape, 0);
 766         theRes->ConvertToShape(theShape, fill_positive);
 767
 768         Path *originaux[1];
 769         originaux[0] = res;
 770         theRes->ConvertToForme(orig, 1, originaux);
 771
 772         delete theShape;
 773         delete theRes;
 774     }
 775
 776     if (orig->descr_cmd.size() <= 1) {
 777         // ca a merd\8e, ou bien le resultat est vide
 778         delete res;
 779         delete orig;
 780         curve->unref();
 781         return ret_pathv;
 782     }
 783
 784
 785     if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
 786         ret_pathv = orig->MakePathVector();
 787
 788         if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
 789             SPShape *shape = SP_SHAPE(item);
 790
 791             Geom::PathVector const & pathv = curve->get_pathvector();
 792
 793             // START marker
 794             for (int i = 0; i < 2; i++) {  // SP_MARKER_LOC and SP_MARKER_LOC_START
 795                 if ( SPObject *marker_obj = shape->marker[i] ) {
 796                     Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
 797                     item_outline_add_marker( marker_obj, m,
 798                                              Geom::Scale(i_style->stroke_width.computed),
 799                                              ret_pathv );
 800                 }
 801             }
 802             // MID marker
 803             for (int i = 0; i < 3; i += 2) {  // SP_MARKER_LOC and SP_MARKER_LOC_MID
 804                 SPObject *midmarker_obj = shape->marker[i];
 805                 if (!midmarker_obj) continue;
 806                 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
 807                     // START position
 808                     if ( path_it != pathv.begin()
 809                          && ! ((path_it == (pathv.end()-1)) && (path_it->size_default() == 0)) ) // if this is the last path and it is a moveto-only, there is no mid marker there
 810                     {
 811                         Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
 812                         item_outline_add_marker( midmarker_obj, m,
 813                                                  Geom::Scale(i_style->stroke_width.computed),
 814                                                  ret_pathv );
 815                     }
 816                     // MID position
 817                    if (path_it->size_default() > 1) {
 818                         Geom::Path::const_iterator curve_it1 = path_it->begin();      // incoming curve
 819                         Geom::Path::const_iterator curve_it2 = ++(path_it->begin());  // outgoing curve
 820                         while (curve_it2 != path_it->end_default())
 821                         {
 822                             /* Put marker between curve_it1 and curve_it2.
 823                              * Loop to end_default (so including closing segment), because when a path is closed,
 824                              * there should be a midpoint marker between last segment and closing straight line segment
 825                              */
 826                             Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
 827                             item_outline_add_marker( midmarker_obj, m,
 828                                                      Geom::Scale(i_style->stroke_width.computed),
 829                                                      ret_pathv);
 830
 831                             ++curve_it1;
 832                             ++curve_it2;
 833                         }
 834                     }
 835                     // END position
 836                     if ( path_it != (pathv.end()-1) && !path_it->empty()) {
 837                         Geom::Curve const &lastcurve = path_it->back_default();
 838                         Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
 839                         item_outline_add_marker( midmarker_obj, m,
 840                                                  Geom::Scale(i_style->stroke_width.computed),
 841                                                  ret_pathv );
 842                     }
 843                 }
 844             }
 845             // END marker
 846             for (int i = 0; i < 4; i += 3) {  // SP_MARKER_LOC and SP_MARKER_LOC_END
 847                 if ( SPObject *marker_obj = shape->marker[i] ) {
 848                     /* Get reference to last curve in the path.
 849                      * For moveto-only path, this returns the "closing line segment". */
 850                     Geom::Path const &path_last = pathv.back();
 851                     unsigned int index = path_last.size_default();
 852                     if (index > 0) {
 853                         index--;
 854                     }
 855                     Geom::Curve const &lastcurve = path_last[index];
 856
 857                     Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
 858                     item_outline_add_marker( marker_obj, m,
 859                                              Geom::Scale(i_style->stroke_width.computed),
 860                                              ret_pathv );
 861                 }
 862             }
 863         }
 864
 865         curve->unref();
 866     }
 867
 868     delete res;
 869     delete orig;
 870
 871     return ret_pathv;
 872 }
 873
 874 void
 875 sp_selected_path_outline(SPDesktop *desktop)
 876 {
 877     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 878
 879     if (selection->isEmpty()) {
 880         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
 881         return;
 882     }
 883
 884     bool did = false;
 885
 886     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
 887          items != NULL;
 888          items = items->next) {
 889
 890         SPItem *item = (SPItem *) items->data;
 891
 892         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 893             continue;
 894
 895         SPCurve *curve = NULL;
 896         if (SP_IS_SHAPE(item)) {
 897             curve = sp_shape_get_curve(SP_SHAPE(item));
 898             if (curve == NULL)
 899                 continue;
 900         }
 901         if (SP_IS_TEXT(item)) {
 902             curve = SP_TEXT(item)->getNormalizedBpath();
 903             if (curve == NULL)
 904                 continue;
 905         }
 906
 907         if (curve->get_pathvector().empty()) {
 908             continue;
 909         }
 910
 911         // pas de stroke pas de chocolat
 912         if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
 913             curve->unref();
 914             continue;
 915         }
 916
 917         // remember old stroke style, to be set on fill
 918         SPStyle *i_style = SP_OBJECT_STYLE(item);
 919         SPCSSAttr *ncss;
 920         {
 921             ncss = sp_css_attr_from_style(i_style, SP_STYLE_FLAG_ALWAYS);
 922             gchar const *s_val = sp_repr_css_property(ncss, "stroke", NULL);
 923             gchar const *s_opac = sp_repr_css_property(ncss, "stroke-opacity", NULL);
 924
 925             sp_repr_css_set_property(ncss, "stroke", "none");
 926             sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
 927             sp_repr_css_set_property(ncss, "fill", s_val);
 928             if ( s_opac ) {
 929                 sp_repr_css_set_property(ncss, "fill-opacity", s_opac);
 930             } else {
 931                 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
 932             }
 933             sp_repr_css_unset_property(ncss, "marker-start");
 934             sp_repr_css_unset_property(ncss, "marker-mid");
 935             sp_repr_css_unset_property(ncss, "marker-end");
 936         }
 937
 938         Geom::Matrix const transform(item->transform);
 939         float const scale = transform.descrim();
 940         gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
 941         gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
 942
 943         float o_width, o_miter;
 944         JoinType o_join;
 945         ButtType o_butt;
 946
 947         {
 948             int jointype, captype;
 949
 950             jointype = i_style->stroke_linejoin.computed;
 951             captype = i_style->stroke_linecap.computed;
 952             o_width = i_style->stroke_width.computed;
 953
 954             switch (jointype) {
 955                 case SP_STROKE_LINEJOIN_MITER:
 956                     o_join = join_pointy;
 957                     break;
 958                 case SP_STROKE_LINEJOIN_ROUND:
 959                     o_join = join_round;
 960                     break;
 961                 default:
 962                     o_join = join_straight;
 963                     break;
 964             }
 965
 966             switch (captype) {
 967                 case SP_STROKE_LINECAP_SQUARE:
 968                     o_butt = butt_square;
 969                     break;
 970                 case SP_STROKE_LINECAP_ROUND:
 971                     o_butt = butt_round;
 972                     break;
 973                 default:
 974                     o_butt = butt_straight;
 975                     break;
 976             }
 977
 978             if (o_width < 0.1)
 979                 o_width = 0.1;
 980             o_miter = i_style->stroke_miterlimit.value * o_width;
 981         }
 982
 983         SPCurve *curvetemp = curve_for_item(item);
 984         if (curvetemp == NULL) {
 985             curve->unref();
 986             continue;
 987         }
 988         // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
 989         Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curvetemp->get_pathvector() );
 990         curvetemp->unref();
 991
 992         Path *orig = new Path;
 993         orig->LoadPathVector(pathv);
 994
 995         Path *res = new Path;
 996         res->SetBackData(false);
 997
 998         if (i_style->stroke_dash.n_dash) {
 999             // For dashed strokes, use Stroke method, because Outline can't do dashes
1000             // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
1001
1002             orig->ConvertWithBackData(0.1);
1003
1004             orig->DashPolylineFromStyle(i_style, scale, 0);
1005
1006             Shape* theShape = new Shape;
1007             orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
1008                          0.5 * o_miter);
1009             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1010
1011             Shape *theRes = new Shape;
1012
1013             theRes->ConvertToShape(theShape, fill_positive);
1014
1015             Path *originaux[1];
1016             originaux[0] = res;
1017             theRes->ConvertToForme(orig, 1, originaux);
1018
1019             res->Coalesce(5.0);
1020
1021             delete theShape;
1022             delete theRes;
1023
1024         } else {
1025
1026             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1027
1028             orig->Coalesce(0.5 * o_width);
1029
1030             Shape *theShape = new Shape;
1031             Shape *theRes = new Shape;
1032
1033             res->ConvertWithBackData(1.0);
1034             res->Fill(theShape, 0);
1035             theRes->ConvertToShape(theShape, fill_positive);
1036
1037             Path *originaux[1];
1038             originaux[0] = res;
1039             theRes->ConvertToForme(orig, 1, originaux);
1040
1041             delete theShape;
1042             delete theRes;
1043         }
1044
1045         if (orig->descr_cmd.size() <= 1) {
1046             // ca a merd\8e, ou bien le resultat est vide
1047             delete res;
1048             delete orig;
1049             continue;
1050         }
1051
1052         did = true;
1053
1054         // remember the position of the item
1055         gint pos = SP_OBJECT_REPR(item)->position();
1056         // remember parent
1057         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1058         // remember id
1059         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1060         // remember title
1061         gchar *title = item->title();
1062         // remember description
1063         gchar *desc = item->desc();
1064
1065         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1066
1067             SPDocument * doc = sp_desktop_document(desktop);
1068             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
1069             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1070
1071             // restore old style, but set old stroke style on fill
1072             sp_repr_css_change(repr, ncss, "style");
1073
1074             sp_repr_css_attr_unref(ncss);
1075
1076             gchar *str = orig->svg_dump_path();
1077             repr->setAttribute("d", str);
1078             g_free(str);
1079
1080             if (mask)
1081                 repr->setAttribute("mask", mask);
1082             if (clip_path)
1083                 repr->setAttribute("clip-path", clip_path);
1084
1085             if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
1086
1087                 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
1088                 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
1089
1090                 // add the group to the parent
1091                 parent->appendChild(g_repr);
1092                 // move to the saved position
1093                 g_repr->setPosition(pos > 0 ? pos : 0);
1094
1095                 g_repr->appendChild(repr);
1096                 // restore title, description, id, transform
1097                 repr->setAttribute("id", id);
1098                 SPItem *newitem = (SPItem *) doc->getObjectByRepr(repr);
1099                 sp_item_write_transform(newitem, repr, transform);
1100                 if (title) {
1101                         newitem->setTitle(title);
1102                 }
1103                 if (desc) {
1104                         newitem->setDesc(desc);
1105                 }
1106
1107                 SPShape *shape = SP_SHAPE(item);
1108
1109                 Geom::PathVector const & pathv = curve->get_pathvector();
1110
1111                 // START marker
1112                 for (int i = 0; i < 2; i++) {  // SP_MARKER_LOC and SP_MARKER_LOC_START
1113                     if ( SPObject *marker_obj = shape->marker[i] ) {
1114                         Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
1115                         sp_selected_path_outline_add_marker( marker_obj, m,
1116                                                              Geom::Scale(i_style->stroke_width.computed), transform,
1117                                                              g_repr, xml_doc, doc );
1118                     }
1119                 }
1120                 // MID marker
1121                 for (int i = 0; i < 3; i += 2) {  // SP_MARKER_LOC and SP_MARKER_LOC_MID
1122                     SPObject *midmarker_obj = shape->marker[i];
1123                     if (!midmarker_obj) continue;
1124                     for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
1125                         // START position
1126                         if ( path_it != pathv.begin()
1127                              && ! ((path_it == (pathv.end()-1)) && (path_it->size_default() == 0)) ) // if this is the last path and it is a moveto-only, there is no mid marker there
1128                         {
1129                             Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
1130                             sp_selected_path_outline_add_marker( midmarker_obj, m,
1131                                                                  Geom::Scale(i_style->stroke_width.computed), transform,
1132                                                                  g_repr, xml_doc, doc );
1133                         }
1134                         // MID position
1135                        if (path_it->size_default() > 1) {
1136                             Geom::Path::const_iterator curve_it1 = path_it->begin();      // incoming curve
1137                             Geom::Path::const_iterator curve_it2 = ++(path_it->begin());  // outgoing curve
1138                             while (curve_it2 != path_it->end_default())
1139                             {
1140                                 /* Put marker between curve_it1 and curve_it2.
1141                                  * Loop to end_default (so including closing segment), because when a path is closed,
1142                                  * there should be a midpoint marker between last segment and closing straight line segment
1143                                  */
1144                                 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
1145                                 sp_selected_path_outline_add_marker(midmarker_obj, m,
1146                                                                     Geom::Scale(i_style->stroke_width.computed), transform,
1147                                                                     g_repr, xml_doc, doc);
1148
1149                                 ++curve_it1;
1150                                 ++curve_it2;
1151                             }
1152                         }
1153                         // END position
1154                         if ( path_it != (pathv.end()-1) && !path_it->empty()) {
1155                             Geom::Curve const &lastcurve = path_it->back_default();
1156                             Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1157                             sp_selected_path_outline_add_marker( midmarker_obj, m,
1158                                                                  Geom::Scale(i_style->stroke_width.computed), transform,
1159                                                                  g_repr, xml_doc, doc );
1160                         }
1161                     }
1162                 }
1163                 // END marker
1164                 for (int i = 0; i < 4; i += 3) {  // SP_MARKER_LOC and SP_MARKER_LOC_END
1165                     if ( SPObject *marker_obj = shape->marker[i] ) {
1166                         /* Get reference to last curve in the path.
1167                          * For moveto-only path, this returns the "closing line segment". */
1168                         Geom::Path const &path_last = pathv.back();
1169                         unsigned int index = path_last.size_default();
1170                         if (index > 0) {
1171                             index--;
1172                         }
1173                         Geom::Curve const &lastcurve = path_last[index];
1174
1175                         Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1176                         sp_selected_path_outline_add_marker( marker_obj, m,
1177                                                              Geom::Scale(i_style->stroke_width.computed), transform,
1178                                                              g_repr, xml_doc, doc );
1179                     }
1180                 }
1181
1182                 selection->add(g_repr);
1183
1184                 Inkscape::GC::release(g_repr);
1185
1186
1187             } else {
1188
1189                 // add the new repr to the parent
1190                 parent->appendChild(repr);
1191
1192                 // move to the saved position
1193                 repr->setPosition(pos > 0 ? pos : 0);
1194
1195                 // restore title, description, id, transform
1196                 repr->setAttribute("id", id);
1197
1198                 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1199                 sp_item_write_transform(newitem, repr, transform);
1200                 if (title) {
1201                         newitem->setTitle(title);
1202                 }
1203                 if (desc) {
1204                         newitem->setDesc(desc);
1205                 }
1206
1207                 selection->add(repr);
1208
1209             }
1210
1211             Inkscape::GC::release(repr);
1212
1213             curve->unref();
1214             selection->remove(item);
1215             SP_OBJECT(item)->deleteObject(false);
1216
1217         }
1218         if (title) g_free(title);
1219         if (desc) g_free(desc);
1220
1221         delete res;
1222         delete orig;
1223     }
1224
1225     if (did) {
1226         sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
1227                          _("Convert stroke to path"));
1228     } else {
1229         // TRANSLATORS: "to outline" means "to convert stroke to path"
1230         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
1231         return;
1232     }
1233 }
1234
1235
1236 void
1237 sp_selected_path_offset(SPDesktop *desktop)
1238 {
1239     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1240     double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1241
1242     sp_selected_path_do_offset(desktop, true, prefOffset);
1243 }
1244 void
1245 sp_selected_path_inset(SPDesktop *desktop)
1246 {
1247     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1248     double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1249
1250     sp_selected_path_do_offset(desktop, false, prefOffset);
1251 }
1252
1253 void
1254 sp_selected_path_offset_screen(SPDesktop *desktop, double pixels)
1255 {
1256     sp_selected_path_do_offset(desktop, true,  pixels / desktop->current_zoom());
1257 }
1258
1259 void
1260 sp_selected_path_inset_screen(SPDesktop *desktop, double pixels)
1261 {
1262     sp_selected_path_do_offset(desktop, false,  pixels / desktop->current_zoom());
1263 }
1264
1265
1266 void sp_selected_path_create_offset_object_zero(SPDesktop *desktop)
1267 {
1268     sp_selected_path_create_offset_object(desktop, 0, false);
1269 }
1270
1271 void sp_selected_path_create_offset(SPDesktop *desktop)
1272 {
1273     sp_selected_path_create_offset_object(desktop, 1, false);
1274 }
1275 void sp_selected_path_create_inset(SPDesktop *desktop)
1276 {
1277     sp_selected_path_create_offset_object(desktop, -1, false);
1278 }
1279
1280 void sp_selected_path_create_updating_offset_object_zero(SPDesktop *desktop)
1281 {
1282     sp_selected_path_create_offset_object(desktop, 0, true);
1283 }
1284
1285 void sp_selected_path_create_updating_offset(SPDesktop *desktop)
1286 {
1287     sp_selected_path_create_offset_object(desktop, 1, true);
1288 }
1289 void sp_selected_path_create_updating_inset(SPDesktop *desktop)
1290 {
1291     sp_selected_path_create_offset_object(desktop, -1, true);
1292 }
1293
1294 void
1295 sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating)
1296 {
1297     Inkscape::Selection *selection;
1298     Inkscape::XML::Node *repr;
1299     SPItem *item;
1300     SPCurve *curve;
1301     gchar *style, *str;
1302     float o_width, o_miter;
1303     JoinType o_join;
1304     ButtType o_butt;
1305
1306     curve = NULL;
1307
1308     selection = sp_desktop_selection(desktop);
1309
1310     item = selection->singleItem();
1311
1312     if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
1313         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
1314         return;
1315     }
1316     if (SP_IS_SHAPE(item))
1317     {
1318         curve = sp_shape_get_curve(SP_SHAPE(item));
1319         if (curve == NULL)
1320             return;
1321     }
1322     if (SP_IS_TEXT(item))
1323     {
1324         curve = SP_TEXT(item)->getNormalizedBpath();
1325         if (curve == NULL)
1326             return;
1327     }
1328
1329     Geom::Matrix const transform(item->transform);
1330
1331     sp_item_write_transform(item, SP_OBJECT_REPR(item), Geom::identity());
1332
1333     style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
1334
1335     // remember the position of the item
1336     gint pos = SP_OBJECT_REPR(item)->position();
1337     // remember parent
1338     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1339
1340     {
1341         SPStyle *i_style = SP_OBJECT(item)->style;
1342         int jointype, captype;
1343
1344         jointype = i_style->stroke_linejoin.value;
1345         captype = i_style->stroke_linecap.value;
1346         o_width = i_style->stroke_width.computed;
1347         if (jointype == SP_STROKE_LINEJOIN_MITER)
1348         {
1349             o_join = join_pointy;
1350         }
1351         else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1352         {
1353             o_join = join_round;
1354         }
1355         else
1356         {
1357             o_join = join_straight;
1358         }
1359         if (captype == SP_STROKE_LINECAP_SQUARE)
1360         {
1361             o_butt = butt_square;
1362         }
1363         else if (captype == SP_STROKE_LINECAP_ROUND)
1364         {
1365             o_butt = butt_round;
1366         }
1367         else
1368         {
1369             o_butt = butt_straight;
1370         }
1371
1372         {
1373             Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1374             o_width = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1375         }
1376
1377         if (o_width < 0.01)
1378             o_width = 0.01;
1379         o_miter = i_style->stroke_miterlimit.value * o_width;
1380     }
1381
1382     Path *orig = Path_for_item(item, true, false);
1383     if (orig == NULL)
1384     {
1385         g_free(style);
1386         curve->unref();
1387         return;
1388     }
1389
1390     Path *res = new Path;
1391     res->SetBackData(false);
1392
1393     {
1394         Shape *theShape = new Shape;
1395         Shape *theRes = new Shape;
1396
1397         orig->ConvertWithBackData(1.0);
1398         orig->Fill(theShape, 0);
1399
1400         SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1401         gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1402         if (val && strcmp(val, "nonzero") == 0)
1403         {
1404             theRes->ConvertToShape(theShape, fill_nonZero);
1405         }
1406         else if (val && strcmp(val, "evenodd") == 0)
1407         {
1408             theRes->ConvertToShape(theShape, fill_oddEven);
1409         }
1410         else
1411         {
1412             theRes->ConvertToShape(theShape, fill_nonZero);
1413         }
1414
1415         Path *originaux[1];
1416         originaux[0] = orig;
1417         theRes->ConvertToForme(res, 1, originaux);
1418
1419         delete theShape;
1420         delete theRes;
1421     }
1422
1423     curve->unref();
1424
1425     if (res->descr_cmd.size() <= 1)
1426     {
1427         // pas vraiment de points sur le resultat
1428         // donc il ne reste rien
1429         sp_document_done(sp_desktop_document(desktop),
1430                          (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1431                           : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1432                          (updating ? _("Create linked offset")
1433                           : _("Create dynamic offset")));
1434         selection->clear();
1435
1436         delete res;
1437         delete orig;
1438         g_free(style);
1439         return;
1440     }
1441
1442     {
1443         gchar tstr[80];
1444
1445         tstr[79] = '\0';
1446
1447         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1448         repr = xml_doc->createElement("svg:path");
1449         repr->setAttribute("sodipodi:type", "inkscape:offset");
1450         sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1451                                                           ? o_width
1452                                                           : expand < 0
1453                                                           ? -o_width
1454                                                           : 0 ));
1455
1456         str = res->svg_dump_path();
1457         repr->setAttribute("inkscape:original", str);
1458         g_free(str);
1459
1460         if ( updating ) {
1461             char const *id = SP_OBJECT(item)->repr->attribute("id");
1462             char const *uri = g_strdup_printf("#%s", id);
1463             repr->setAttribute("xlink:href", uri);
1464             g_free((void *) uri);
1465         } else {
1466             repr->setAttribute("inkscape:href", NULL);
1467         }
1468
1469         repr->setAttribute("style", style);
1470
1471         // add the new repr to the parent
1472         parent->appendChild(repr);
1473
1474         // move to the saved position
1475         repr->setPosition(pos > 0 ? pos : 0);
1476
1477         SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1478
1479         if ( updating ) {
1480             // on conserve l'original
1481             // we reapply the transform to the original (offset will feel it)
1482             sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1483         } else {
1484             // delete original, apply the transform to the offset
1485             SP_OBJECT(item)->deleteObject(false);
1486             sp_item_write_transform(nitem, repr, transform);
1487         }
1488
1489         // The object just created from a temporary repr is only a seed.
1490         // We need to invoke its write which will update its real repr (in particular adding d=)
1491         SP_OBJECT(nitem)->updateRepr();
1492
1493         Inkscape::GC::release(repr);
1494
1495         selection->set(nitem);
1496     }
1497
1498     sp_document_done(sp_desktop_document(desktop),
1499                      (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1500                       : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1501                      (updating ? _("Create linked offset")
1502                       : _("Create dynamic offset")));
1503
1504     delete res;
1505     delete orig;
1506
1507     g_free(style);
1508 }
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521 void
1522 sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset)
1523 {
1524     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1525
1526     if (selection->isEmpty()) {
1527         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1528         return;
1529     }
1530
1531     bool did = false;
1532
1533     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1534          items != NULL;
1535          items = items->next) {
1536
1537         SPItem *item = (SPItem *) items->data;
1538
1539         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1540             continue;
1541
1542         SPCurve *curve = NULL;
1543         if (SP_IS_SHAPE(item)) {
1544             curve = sp_shape_get_curve(SP_SHAPE(item));
1545             if (curve == NULL)
1546                 continue;
1547         }
1548         if (SP_IS_TEXT(item)) {
1549             curve = SP_TEXT(item)->getNormalizedBpath();
1550             if (curve == NULL)
1551                 continue;
1552         }
1553
1554         Geom::Matrix const transform(item->transform);
1555
1556         sp_item_write_transform(item, SP_OBJECT_REPR(item), Geom::identity());
1557
1558         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1559
1560         float o_width, o_miter;
1561         JoinType o_join;
1562         ButtType o_butt;
1563
1564         {
1565             SPStyle *i_style = SP_OBJECT(item)->style;
1566             int jointype, captype;
1567
1568             jointype = i_style->stroke_linejoin.value;
1569             captype = i_style->stroke_linecap.value;
1570             o_width = i_style->stroke_width.computed;
1571
1572             switch (jointype) {
1573                 case SP_STROKE_LINEJOIN_MITER:
1574                     o_join = join_pointy;
1575                     break;
1576                 case SP_STROKE_LINEJOIN_ROUND:
1577                     o_join = join_round;
1578                     break;
1579                 default:
1580                     o_join = join_straight;
1581                     break;
1582             }
1583
1584             switch (captype) {
1585                 case SP_STROKE_LINECAP_SQUARE:
1586                     o_butt = butt_square;
1587                     break;
1588                 case SP_STROKE_LINECAP_ROUND:
1589                     o_butt = butt_round;
1590                     break;
1591                 default:
1592                     o_butt = butt_straight;
1593                     break;
1594             }
1595
1596             o_width = prefOffset;
1597
1598             if (o_width < 0.1)
1599                 o_width = 0.1;
1600             o_miter = i_style->stroke_miterlimit.value * o_width;
1601         }
1602
1603         Path *orig = Path_for_item(item, false);
1604         if (orig == NULL) {
1605             g_free(style);
1606             curve->unref();
1607             continue;
1608         }
1609
1610         Path *res = new Path;
1611         res->SetBackData(false);
1612
1613         {
1614             Shape *theShape = new Shape;
1615             Shape *theRes = new Shape;
1616
1617             orig->ConvertWithBackData(0.03);
1618             orig->Fill(theShape, 0);
1619
1620             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1621             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1622             if (val && strcmp(val, "nonzero") == 0)
1623             {
1624                 theRes->ConvertToShape(theShape, fill_nonZero);
1625             }
1626             else if (val && strcmp(val, "evenodd") == 0)
1627             {
1628                 theRes->ConvertToShape(theShape, fill_oddEven);
1629             }
1630             else
1631             {
1632                 theRes->ConvertToShape(theShape, fill_nonZero);
1633             }
1634
1635             // et maintenant: offset
1636             // methode inexacte
1637 /*                      Path *originaux[1];
1638                         originaux[0] = orig;
1639                         theRes->ConvertToForme(res, 1, originaux);
1640
1641                         if (expand) {
1642                         res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1643                         } else {
1644                         res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1645                         }
1646
1647                         orig->ConvertWithBackData(1.0);
1648                         orig->Fill(theShape, 0);
1649                         theRes->ConvertToShape(theShape, fill_positive);
1650                         originaux[0] = orig;
1651                         theRes->ConvertToForme(res, 1, originaux);
1652
1653                         if (o_width >= 0.5) {
1654                         //     res->Coalesce(1.0);
1655                         res->ConvertEvenLines(1.0);
1656                         res->Simplify(1.0);
1657                         } else {
1658                         //      res->Coalesce(o_width);
1659                         res->ConvertEvenLines(1.0*o_width);
1660                         res->Simplify(1.0 * o_width);
1661                         }    */
1662             // methode par makeoffset
1663
1664             if (expand)
1665             {
1666                 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1667             }
1668             else
1669             {
1670                 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1671             }
1672             theRes->ConvertToShape(theShape, fill_positive);
1673
1674             res->Reset();
1675             theRes->ConvertToForme(res);
1676
1677             if (o_width >= 1.0)
1678             {
1679                 res->ConvertEvenLines(1.0);
1680                 res->Simplify(1.0);
1681             }
1682             else
1683             {
1684                 res->ConvertEvenLines(1.0*o_width);
1685                 res->Simplify(1.0 * o_width);
1686             }
1687
1688             delete theShape;
1689             delete theRes;
1690         }
1691
1692         did = true;
1693
1694         curve->unref();
1695         // remember the position of the item
1696         gint pos = SP_OBJECT_REPR(item)->position();
1697         // remember parent
1698         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1699         // remember id
1700         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1701
1702         selection->remove(item);
1703         SP_OBJECT(item)->deleteObject(false);
1704
1705         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1706
1707             gchar tstr[80];
1708
1709             tstr[79] = '\0';
1710
1711             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1712             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1713
1714             repr->setAttribute("style", style);
1715
1716             gchar *str = res->svg_dump_path();
1717             repr->setAttribute("d", str);
1718             g_free(str);
1719
1720             // add the new repr to the parent
1721             parent->appendChild(repr);
1722
1723             // move to the saved position
1724             repr->setPosition(pos > 0 ? pos : 0);
1725
1726             SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1727
1728             // reapply the transform
1729             sp_item_write_transform(newitem, repr, transform);
1730
1731             repr->setAttribute("id", id);
1732
1733             selection->add(repr);
1734
1735             Inkscape::GC::release(repr);
1736         }
1737
1738         delete orig;
1739         delete res;
1740     }
1741
1742     if (did) {
1743         sp_document_done(sp_desktop_document(desktop),
1744                          (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1745                          (expand ? _("Outset path") : _("Inset path")));
1746     } else {
1747         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1748         return;
1749     }
1750 }
1751
1752
1753 static bool
1754 sp_selected_path_simplify_items(SPDesktop *desktop,
1755                                 Inkscape::Selection *selection, GSList *items,
1756                                 float threshold,  bool justCoalesce,
1757                                 float angleLimit, bool breakableAngles,
1758                                 bool modifySelection);
1759
1760
1761 //return true if we changed something, else false
1762 bool
1763 sp_selected_path_simplify_item(SPDesktop *desktop,
1764                  Inkscape::Selection *selection, SPItem *item,
1765                  float threshold,  bool justCoalesce,
1766                  float angleLimit, bool breakableAngles,
1767                  gdouble size,     bool modifySelection)
1768 {
1769     if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1770         return false;
1771
1772     //If this is a group, do the children instead
1773     if (SP_IS_GROUP(item)) {
1774         GSList *items = sp_item_group_item_list(SP_GROUP(item));
1775
1776         return sp_selected_path_simplify_items(desktop, selection, items,
1777                                                threshold, justCoalesce,
1778                                                angleLimit, breakableAngles,
1779                                                false);
1780     }
1781
1782
1783     SPCurve *curve = NULL;
1784
1785     if (SP_IS_SHAPE(item)) {
1786         curve = sp_shape_get_curve(SP_SHAPE(item));
1787         if (!curve)
1788             return false;
1789     }
1790
1791     if (SP_IS_TEXT(item)) {
1792         curve = SP_TEXT(item)->getNormalizedBpath();
1793         if (!curve)
1794             return false;
1795     }
1796
1797     // correct virtual size by full transform (bug #166937)
1798     size /= sp_item_i2doc_affine(item).descrim();
1799
1800     // save the transform, to re-apply it after simplification
1801     Geom::Matrix const transform(item->transform);
1802
1803     /*
1804        reset the transform, effectively transforming the item by transform.inverse();
1805        this is necessary so that the item is transformed twice back and forth,
1806        allowing all compensations to cancel out regardless of the preferences
1807     */
1808     sp_item_write_transform(item, SP_OBJECT_REPR(item), Geom::identity());
1809
1810     gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1811     gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1812     gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1813
1814     Path *orig = Path_for_item(item, false);
1815     if (orig == NULL) {
1816         g_free(style);
1817         curve->unref();
1818         return false;
1819     }
1820
1821     curve->unref();
1822     // remember the position of the item
1823     gint pos = SP_OBJECT_REPR(item)->position();
1824     // remember parent
1825     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1826     // remember id
1827     char const *id = SP_OBJECT_REPR(item)->attribute("id");
1828     // remember path effect
1829     char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1830     // remember title
1831     gchar *title = item->title();
1832     // remember description
1833     gchar *desc = item->desc();
1834
1835     //If a group was selected, to not change the selection list
1836     if (modifySelection)
1837         selection->remove(item);
1838
1839     SP_OBJECT(item)->deleteObject(false);
1840
1841     if ( justCoalesce ) {
1842         orig->Coalesce(threshold * size);
1843     } else {
1844         orig->ConvertEvenLines(threshold * size);
1845         orig->Simplify(threshold * size);
1846     }
1847
1848     Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1849     Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1850
1851     // restore style, mask and clip-path
1852     repr->setAttribute("style", style);
1853     g_free(style);
1854
1855     if ( mask ) {
1856         repr->setAttribute("mask", mask);
1857         g_free(mask);
1858     }
1859
1860     if ( clip_path ) {
1861         repr->setAttribute("clip-path", clip_path);
1862         g_free(clip_path);
1863     }
1864
1865     // restore path effect
1866     repr->setAttribute("inkscape:path-effect", patheffect);
1867
1868     // path
1869     gchar *str = orig->svg_dump_path();
1870     if (patheffect)
1871         repr->setAttribute("inkscape:original-d", str);
1872     else
1873         repr->setAttribute("d", str);
1874     g_free(str);
1875
1876     // restore id
1877     repr->setAttribute("id", id);
1878
1879     // add the new repr to the parent
1880     parent->appendChild(repr);
1881
1882     // move to the saved position
1883     repr->setPosition(pos > 0 ? pos : 0);
1884
1885     SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1886
1887     // reapply the transform
1888     sp_item_write_transform(newitem, repr, transform);
1889
1890     // restore title & description
1891     if (title) {
1892         newitem->setTitle(title);
1893         g_free(title);
1894     }
1895     if (desc) {
1896         newitem->setDesc(desc);
1897         g_free(desc);
1898     }
1899
1900     //If we are not in a selected group
1901     if (modifySelection)
1902         selection->add(repr);
1903
1904     Inkscape::GC::release(repr);
1905
1906     // clean up
1907     if (orig) delete orig;
1908
1909     return true;
1910 }
1911
1912
1913 bool
1914 sp_selected_path_simplify_items(SPDesktop *desktop,
1915                                 Inkscape::Selection *selection, GSList *items,
1916                                 float threshold,  bool justCoalesce,
1917                                 float angleLimit, bool breakableAngles,
1918                                 bool modifySelection)
1919 {
1920     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1921     bool simplifyIndividualPaths = prefs->getBool("/options/simplifyindividualpaths/value");
1922
1923     gchar *simplificationType;
1924     if (simplifyIndividualPaths) {
1925         simplificationType = _("Simplifying paths (separately):");
1926     } else {
1927         simplificationType = _("Simplifying paths:");
1928     }
1929
1930     bool didSomething = false;
1931
1932     Geom::OptRect selectionBbox = selection->bounds();
1933     if (!selectionBbox) {
1934         return false;
1935     }
1936     gdouble selectionSize  = L2(selectionBbox->dimensions());
1937
1938     gdouble simplifySize  = selectionSize;
1939
1940     int pathsSimplified = 0;
1941     int totalPathCount  = g_slist_length(items);
1942
1943     // set "busy" cursor
1944     desktop->setWaitingCursor();
1945
1946     for (; items != NULL; items = items->next) {
1947         SPItem *item = (SPItem *) items->data;
1948
1949         if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1950           continue;
1951
1952         if (simplifyIndividualPaths) {
1953             Geom::OptRect itemBbox = item->getBounds(sp_item_i2d_affine(item));
1954             if (itemBbox) {
1955                 simplifySize      = L2(itemBbox->dimensions());
1956             } else {
1957                 simplifySize      = 0;
1958             }
1959         }
1960
1961         pathsSimplified++;
1962
1963         if (pathsSimplified % 20 == 0) {
1964             gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."),
1965                 simplificationType, pathsSimplified, totalPathCount);
1966             desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1967         }
1968
1969         didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1970             threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1971     }
1972
1973     desktop->clearWaitingCursor();
1974
1975     if (pathsSimplified > 20) {
1976         desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1977     }
1978
1979     return didSomething;
1980 }
1981
1982 void
1983 sp_selected_path_simplify_selection(SPDesktop *desktop, float threshold, bool justCoalesce,
1984                                     float angleLimit, bool breakableAngles)
1985 {
1986     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1987
1988     if (selection->isEmpty()) {
1989         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1990                          _("Select <b>path(s)</b> to simplify."));
1991         return;
1992     }
1993
1994     GSList *items = g_slist_copy((GSList *) selection->itemList());
1995
1996     bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1997                                                         items, threshold,
1998                                                         justCoalesce,
1999                                                         angleLimit,
2000                                                         breakableAngles, true);
2001
2002     if (didSomething)
2003         sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
2004                          _("Simplify"));
2005     else
2006         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
2007
2008 }
2009
2010
2011 // globals for keeping track of accelerated simplify
2012 static double previousTime      = 0.0;
2013 static gdouble simplifyMultiply = 1.0;
2014
2015 void
2016 sp_selected_path_simplify(SPDesktop *desktop)
2017 {
2018     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
2019     gdouble simplifyThreshold =
2020         prefs->getDouble("/options/simplifythreshold/value", 0.003);
2021     bool simplifyJustCoalesce = prefs->getBool("/options/simplifyjustcoalesce/value", 0);
2022
2023     //Get the current time
2024     GTimeVal currentTimeVal;
2025     g_get_current_time(&currentTimeVal);
2026     double currentTime = currentTimeVal.tv_sec * 1000000 +
2027                 currentTimeVal.tv_usec;
2028
2029     //Was the previous call to this function recent? (<0.5 sec)
2030     if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
2031
2032         // add to the threshold 1/2 of its original value
2033         simplifyMultiply  += 0.5;
2034         simplifyThreshold *= simplifyMultiply;
2035
2036     } else {
2037         // reset to the default
2038         simplifyMultiply = 1;
2039     }
2040
2041     //remember time for next call
2042     previousTime = currentTime;
2043
2044     //g_print("%g\n", simplify_threshold);
2045
2046     //Make the actual call
2047     sp_selected_path_simplify_selection(desktop, simplifyThreshold,
2048                                         simplifyJustCoalesce, 0.0, false);
2049 }
2050
2051
2052
2053 // fonctions utilitaires
2054
2055 bool
2056 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
2057 {
2058     if (who == NULL || a == NULL)
2059         return false;
2060     if (who == a)
2061         return true;
2062     return Ancetre(sp_repr_parent(a), who);
2063 }
2064
2065 Path *
2066 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
2067 {
2068     SPCurve *curve = curve_for_item(item);
2069
2070     if (curve == NULL)
2071         return NULL;
2072
2073     Geom::PathVector *pathv = pathvector_for_curve(item, curve, doTransformation, transformFull, Geom::identity(), Geom::identity());
2074     curve->unref();
2075
2076     Path *dest = new Path;
2077     dest->LoadPathVector(*pathv);
2078     delete pathv;
2079
2080     return dest;
2081 }
2082
2083 /*
2084  * NOTE: Returns empty pathvector if curve == NULL
2085  * TODO: see if calling this method can be optimized. All the pathvector copying might be slow.
2086  */
2087 Geom::PathVector*
2088 pathvector_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull, Geom::Matrix extraPreAffine, Geom::Matrix extraPostAffine)
2089 {
2090     if (curve == NULL)
2091         return NULL;
2092
2093     Geom::PathVector *dest = new Geom::PathVector;
2094     *dest = curve->get_pathvector(); // Make a copy; must be freed by the caller!
2095
2096     if (doTransformation) {
2097         if (transformFull) {
2098             *dest *= extraPreAffine * sp_item_i2doc_affine(item) * extraPostAffine;
2099         } else {
2100             *dest *= extraPreAffine * (Geom::Matrix)item->transform * extraPostAffine;
2101         }
2102     } else {
2103         *dest *= extraPreAffine * extraPostAffine;
2104     }
2105
2106     return dest;
2107 }
2108
2109 SPCurve* curve_for_item(SPItem *item)
2110 {
2111     if (!item)
2112         return NULL;
2113
2114     SPCurve *curve = NULL;
2115     if (SP_IS_SHAPE(item)) {
2116         if (SP_IS_PATH(item)) {
2117             curve = sp_path_get_curve_for_edit(SP_PATH(item));
2118         } else {
2119             curve = sp_shape_get_curve(SP_SHAPE(item));
2120         }
2121     }
2122     else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
2123     {
2124         curve = te_get_layout(item)->convertToCurves();
2125     }
2126     else if (SP_IS_IMAGE(item))
2127     {
2128     curve = sp_image_get_curve(SP_IMAGE(item));
2129     }
2130
2131     return curve; // do not forget to unref the curve at some point!
2132 }
2133
2134 boost::optional<Path::cut_position> get_nearest_position_on_Path(Path *path, Geom::Point p, unsigned seg)
2135 {
2136     //get nearest position on path
2137     Path::cut_position pos = path->PointToCurvilignPosition(p, seg);
2138     return pos;
2139 }
2140
2141 Geom::Point get_point_on_Path(Path *path, int piece, double t)
2142 {
2143     Geom::Point p;
2144     path->PointAt(piece, t, p);
2145     return p;
2146 }
2147
2148
2149 /*
2150   Local Variables:
2151   mode:c++
2152   c-file-style:"stroustrup"
2153   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
2154   indent-tabs-mode:nil
2155   fill-column:99
2156   End:
2157 */
2158 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :