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         SPDocumentUndo::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(item_source->i2doc_affine());
 455     item_source->adjust_stroke(i2doc.descrim());
 456     item_source->adjust_pattern(i2doc);
 457     item_source->adjust_gradient(i2doc);
 458     item_source->adjust_livepatheffect(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 (parent_item->i2doc_affine());
 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         SPDocumentUndo::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         marker_item->doWriteTransform(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::Matrix transform,
 630                               Geom::PathVector* pathv_in )
 631 {
 632     SPMarker* marker = SP_MARKER (marker_object);
 633     SPItem* marker_item = sp_item_first_item_child(SP_OBJECT(marker_object));
 634
 635     Geom::Matrix tr(marker_transform);
 636     if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
 637         tr = stroke_scale * tr;
 638     }
 639     // total marker transform
 640     tr = marker_item->transform * marker->c2p * tr * transform;
 641
 642     Geom::PathVector* marker_pathv = item_outline(marker_item);
 643
 644     if (marker_pathv) {
 645         for (unsigned int j=0; j < marker_pathv->size(); j++) {
 646             pathv_in->push_back((*marker_pathv)[j] * tr);
 647         }
 648         delete marker_pathv;
 649     }
 650 }
 651
 652 /**
 653  *  Returns a pathvector that is the outline of the stroked item, with markers.
 654  *  item must be SPShape of SPText.
 655  */
 656 Geom::PathVector* item_outline(SPItem const *item)
 657 {
 658     Geom::PathVector *ret_pathv = NULL;
 659
 660     if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 661         return ret_pathv;
 662
 663     // no stroke: no outline
 664     if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
 665         return ret_pathv;
 666     }
 667
 668     SPCurve *curve = NULL;
 669     if (SP_IS_SHAPE(item)) {
 670         curve = SP_SHAPE(item)->getCurve();
 671     } else if (SP_IS_TEXT(item)) {
 672         curve = SP_TEXT(item)->getNormalizedBpath();
 673     }
 674     if (curve == NULL) {
 675         return ret_pathv;
 676     }
 677
 678     // remember old stroke style, to be set on fill
 679     SPStyle *i_style = SP_OBJECT_STYLE(item);
 680
 681     Geom::Matrix const transform(item->transform);
 682     float const scale = transform.descrim();
 683
 684     float o_width, o_miter;
 685     JoinType o_join;
 686     ButtType o_butt;
 687     {
 688         o_width = i_style->stroke_width.computed;
 689         if (o_width < 0.1) {
 690             o_width = 0.1;
 691         }
 692         o_miter = i_style->stroke_miterlimit.value * o_width;
 693
 694         switch (i_style->stroke_linejoin.computed) {
 695             case SP_STROKE_LINEJOIN_MITER:
 696                 o_join = join_pointy;
 697                 break;
 698             case SP_STROKE_LINEJOIN_ROUND:
 699                 o_join = join_round;
 700                 break;
 701             default:
 702                 o_join = join_straight;
 703                 break;
 704         }
 705
 706         switch (i_style->stroke_linecap.computed) {
 707             case SP_STROKE_LINECAP_SQUARE:
 708                 o_butt = butt_square;
 709                 break;
 710             case SP_STROKE_LINECAP_ROUND:
 711                 o_butt = butt_round;
 712                 break;
 713             default:
 714                 o_butt = butt_straight;
 715                 break;
 716         }
 717     }
 718
 719     // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
 720     Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curve->get_pathvector() );
 721
 722     Path *orig = new Path;
 723     orig->LoadPathVector(pathv);
 724
 725     Path *res = new Path;
 726     res->SetBackData(false);
 727
 728     if (i_style->stroke_dash.n_dash) {
 729         // For dashed strokes, use Stroke method, because Outline can't do dashes
 730         // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
 731
 732         orig->ConvertWithBackData(0.1);
 733
 734         orig->DashPolylineFromStyle(i_style, scale, 0);
 735
 736         Shape* theShape = new Shape;
 737         orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
 738                      0.5 * o_miter);
 739         orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 740
 741         Shape *theRes = new Shape;
 742
 743         theRes->ConvertToShape(theShape, fill_positive);
 744
 745         Path *originaux[1];
 746         originaux[0] = res;
 747         theRes->ConvertToForme(orig, 1, originaux);
 748
 749         res->Coalesce(5.0);
 750
 751         delete theShape;
 752         delete theRes;
 753     } else {
 754         orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 755
 756         orig->Coalesce(0.5 * o_width);
 757
 758         Shape *theShape = new Shape;
 759         Shape *theRes = new Shape;
 760
 761         res->ConvertWithBackData(1.0);
 762         res->Fill(theShape, 0);
 763         theRes->ConvertToShape(theShape, fill_positive);
 764
 765         Path *originaux[1];
 766         originaux[0] = res;
 767         theRes->ConvertToForme(orig, 1, originaux);
 768
 769         delete theShape;
 770         delete theRes;
 771     }
 772
 773     if (orig->descr_cmd.size() <= 1) {
 774         // ca a merd\8e, ou bien le resultat est vide
 775         delete res;
 776         delete orig;
 777         curve->unref();
 778         return ret_pathv;
 779     }
 780
 781
 782     if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
 783         ret_pathv = orig->MakePathVector();
 784
 785         if (SP_IS_SHAPE(item) && SP_SHAPE(item)->hasMarkers ()) {
 786             SPShape *shape = SP_SHAPE(item);
 787
 788             Geom::PathVector const & pathv = curve->get_pathvector();
 789
 790             // START marker
 791             for (int i = 0; i < 2; i++) {  // SP_MARKER_LOC and SP_MARKER_LOC_START
 792                 if ( SPObject *marker_obj = shape->marker[i] ) {
 793                     Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
 794                     item_outline_add_marker( marker_obj, m,
 795                                              Geom::Scale(i_style->stroke_width.computed), transform,
 796                                              ret_pathv );
 797                 }
 798             }
 799             // MID marker
 800             for (int i = 0; i < 3; i += 2) {  // SP_MARKER_LOC and SP_MARKER_LOC_MID
 801                 SPObject *midmarker_obj = shape->marker[i];
 802                 if (!midmarker_obj) continue;
 803                 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
 804                     // START position
 805                     if ( path_it != pathv.begin()
 806                          && ! ((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
 807                     {
 808                         Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
 809                         item_outline_add_marker( midmarker_obj, m,
 810                                                  Geom::Scale(i_style->stroke_width.computed), transform,
 811                                                  ret_pathv );
 812                     }
 813                     // MID position
 814                    if (path_it->size_default() > 1) {
 815                         Geom::Path::const_iterator curve_it1 = path_it->begin();      // incoming curve
 816                         Geom::Path::const_iterator curve_it2 = ++(path_it->begin());  // outgoing curve
 817                         while (curve_it2 != path_it->end_default())
 818                         {
 819                             /* Put marker between curve_it1 and curve_it2.
 820                              * Loop to end_default (so including closing segment), because when a path is closed,
 821                              * there should be a midpoint marker between last segment and closing straight line segment
 822                              */
 823                             Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
 824                             item_outline_add_marker( midmarker_obj, m,
 825                                                      Geom::Scale(i_style->stroke_width.computed), transform,
 826                                                      ret_pathv);
 827
 828                             ++curve_it1;
 829                             ++curve_it2;
 830                         }
 831                     }
 832                     // END position
 833                     if ( path_it != (pathv.end()-1) && !path_it->empty()) {
 834                         Geom::Curve const &lastcurve = path_it->back_default();
 835                         Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
 836                         item_outline_add_marker( midmarker_obj, m,
 837                                                  Geom::Scale(i_style->stroke_width.computed), transform,
 838                                                  ret_pathv );
 839                     }
 840                 }
 841             }
 842             // END marker
 843             for (int i = 0; i < 4; i += 3) {  // SP_MARKER_LOC and SP_MARKER_LOC_END
 844                 if ( SPObject *marker_obj = shape->marker[i] ) {
 845                     /* Get reference to last curve in the path.
 846                      * For moveto-only path, this returns the "closing line segment". */
 847                     Geom::Path const &path_last = pathv.back();
 848                     unsigned int index = path_last.size_default();
 849                     if (index > 0) {
 850                         index--;
 851                     }
 852                     Geom::Curve const &lastcurve = path_last[index];
 853
 854                     Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
 855                     item_outline_add_marker( marker_obj, m,
 856                                              Geom::Scale(i_style->stroke_width.computed), transform,
 857                                              ret_pathv );
 858                 }
 859             }
 860         }
 861
 862         curve->unref();
 863     }
 864
 865     delete res;
 866     delete orig;
 867
 868     return ret_pathv;
 869 }
 870
 871 void
 872 sp_selected_path_outline(SPDesktop *desktop)
 873 {
 874     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 875
 876     if (selection->isEmpty()) {
 877         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
 878         return;
 879     }
 880
 881     bool did = false;
 882
 883     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
 884          items != NULL;
 885          items = items->next) {
 886
 887         SPItem *item = (SPItem *) items->data;
 888
 889         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 890             continue;
 891
 892         SPCurve *curve = NULL;
 893         if (SP_IS_SHAPE(item)) {
 894             curve = SP_SHAPE(item)->getCurve();
 895             if (curve == NULL)
 896                 continue;
 897         }
 898         if (SP_IS_TEXT(item)) {
 899             curve = SP_TEXT(item)->getNormalizedBpath();
 900             if (curve == NULL)
 901                 continue;
 902         }
 903
 904         // pas de stroke pas de chocolat
 905         if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
 906             curve->unref();
 907             continue;
 908         }
 909
 910         // remember old stroke style, to be set on fill
 911         SPStyle *i_style = SP_OBJECT_STYLE(item);
 912         SPCSSAttr *ncss;
 913         {
 914             ncss = sp_css_attr_from_style(i_style, SP_STYLE_FLAG_ALWAYS);
 915             gchar const *s_val = sp_repr_css_property(ncss, "stroke", NULL);
 916             gchar const *s_opac = sp_repr_css_property(ncss, "stroke-opacity", NULL);
 917
 918             sp_repr_css_set_property(ncss, "stroke", "none");
 919             sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
 920             sp_repr_css_set_property(ncss, "fill", s_val);
 921             if ( s_opac ) {
 922                 sp_repr_css_set_property(ncss, "fill-opacity", s_opac);
 923             } else {
 924                 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
 925             }
 926             sp_repr_css_unset_property(ncss, "marker-start");
 927             sp_repr_css_unset_property(ncss, "marker-mid");
 928             sp_repr_css_unset_property(ncss, "marker-end");
 929         }
 930
 931         Geom::Matrix const transform(item->transform);
 932         float const scale = transform.descrim();
 933         gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
 934         gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
 935
 936         float o_width, o_miter;
 937         JoinType o_join;
 938         ButtType o_butt;
 939
 940         {
 941             int jointype, captype;
 942
 943             jointype = i_style->stroke_linejoin.computed;
 944             captype = i_style->stroke_linecap.computed;
 945             o_width = i_style->stroke_width.computed;
 946
 947             switch (jointype) {
 948                 case SP_STROKE_LINEJOIN_MITER:
 949                     o_join = join_pointy;
 950                     break;
 951                 case SP_STROKE_LINEJOIN_ROUND:
 952                     o_join = join_round;
 953                     break;
 954                 default:
 955                     o_join = join_straight;
 956                     break;
 957             }
 958
 959             switch (captype) {
 960                 case SP_STROKE_LINECAP_SQUARE:
 961                     o_butt = butt_square;
 962                     break;
 963                 case SP_STROKE_LINECAP_ROUND:
 964                     o_butt = butt_round;
 965                     break;
 966                 default:
 967                     o_butt = butt_straight;
 968                     break;
 969             }
 970
 971             if (o_width < 0.1)
 972                 o_width = 0.1;
 973             o_miter = i_style->stroke_miterlimit.value * o_width;
 974         }
 975
 976         SPCurve *curvetemp = curve_for_item(item);
 977         if (curvetemp == NULL) {
 978             curve->unref();
 979             continue;
 980         }
 981         // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
 982         Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curvetemp->get_pathvector() );
 983         curvetemp->unref();
 984
 985         Path *orig = new Path;
 986         orig->LoadPathVector(pathv);
 987
 988         Path *res = new Path;
 989         res->SetBackData(false);
 990
 991         if (i_style->stroke_dash.n_dash) {
 992             // For dashed strokes, use Stroke method, because Outline can't do dashes
 993             // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
 994
 995             orig->ConvertWithBackData(0.1);
 996
 997             orig->DashPolylineFromStyle(i_style, scale, 0);
 998
 999             Shape* theShape = new Shape;
1000             orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
1001                          0.5 * o_miter);
1002             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1003
1004             Shape *theRes = new Shape;
1005
1006             theRes->ConvertToShape(theShape, fill_positive);
1007
1008             Path *originaux[1];
1009             originaux[0] = res;
1010             theRes->ConvertToForme(orig, 1, originaux);
1011
1012             res->Coalesce(5.0);
1013
1014             delete theShape;
1015             delete theRes;
1016
1017         } else {
1018
1019             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1020
1021             orig->Coalesce(0.5 * o_width);
1022
1023             Shape *theShape = new Shape;
1024             Shape *theRes = new Shape;
1025
1026             res->ConvertWithBackData(1.0);
1027             res->Fill(theShape, 0);
1028             theRes->ConvertToShape(theShape, fill_positive);
1029
1030             Path *originaux[1];
1031             originaux[0] = res;
1032             theRes->ConvertToForme(orig, 1, originaux);
1033
1034             delete theShape;
1035             delete theRes;
1036         }
1037
1038         if (orig->descr_cmd.size() <= 1) {
1039             // ca a merd\8e, ou bien le resultat est vide
1040             delete res;
1041             delete orig;
1042             continue;
1043         }
1044
1045         did = true;
1046
1047         // remember the position of the item
1048         gint pos = SP_OBJECT_REPR(item)->position();
1049         // remember parent
1050         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1051         // remember id
1052         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1053         // remember title
1054         gchar *title = item->title();
1055         // remember description
1056         gchar *desc = item->desc();
1057
1058         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1059
1060             SPDocument * doc = sp_desktop_document(desktop);
1061             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
1062             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1063
1064             // restore old style, but set old stroke style on fill
1065             sp_repr_css_change(repr, ncss, "style");
1066
1067             sp_repr_css_attr_unref(ncss);
1068
1069             gchar *str = orig->svg_dump_path();
1070             repr->setAttribute("d", str);
1071             g_free(str);
1072
1073             if (mask)
1074                 repr->setAttribute("mask", mask);
1075             if (clip_path)
1076                 repr->setAttribute("clip-path", clip_path);
1077
1078             if (SP_IS_SHAPE(item) && SP_SHAPE(item)->hasMarkers ()) {
1079
1080                 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
1081                 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
1082
1083                 // add the group to the parent
1084                 parent->appendChild(g_repr);
1085                 // move to the saved position
1086                 g_repr->setPosition(pos > 0 ? pos : 0);
1087
1088                 g_repr->appendChild(repr);
1089                 // restore title, description, id, transform
1090                 repr->setAttribute("id", id);
1091                 SPItem *newitem = (SPItem *) doc->getObjectByRepr(repr);
1092                 newitem->doWriteTransform(repr, transform);
1093                 if (title) {
1094                         newitem->setTitle(title);
1095                 }
1096                 if (desc) {
1097                         newitem->setDesc(desc);
1098                 }
1099
1100                 SPShape *shape = SP_SHAPE(item);
1101
1102                 Geom::PathVector const & pathv = curve->get_pathvector();
1103
1104                 // START marker
1105                 for (int i = 0; i < 2; i++) {  // SP_MARKER_LOC and SP_MARKER_LOC_START
1106                     if ( SPObject *marker_obj = shape->marker[i] ) {
1107                         Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
1108                         sp_selected_path_outline_add_marker( marker_obj, m,
1109                                                              Geom::Scale(i_style->stroke_width.computed), transform,
1110                                                              g_repr, xml_doc, doc );
1111                     }
1112                 }
1113                 // MID marker
1114                 for (int i = 0; i < 3; i += 2) {  // SP_MARKER_LOC and SP_MARKER_LOC_MID
1115                     SPObject *midmarker_obj = shape->marker[i];
1116                     if (!midmarker_obj) continue;
1117                     for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
1118                         // START position
1119                         if ( path_it != pathv.begin()
1120                              && ! ((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
1121                         {
1122                             Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
1123                             sp_selected_path_outline_add_marker( midmarker_obj, m,
1124                                                                  Geom::Scale(i_style->stroke_width.computed), transform,
1125                                                                  g_repr, xml_doc, doc );
1126                         }
1127                         // MID position
1128                        if (path_it->size_default() > 1) {
1129                             Geom::Path::const_iterator curve_it1 = path_it->begin();      // incoming curve
1130                             Geom::Path::const_iterator curve_it2 = ++(path_it->begin());  // outgoing curve
1131                             while (curve_it2 != path_it->end_default())
1132                             {
1133                                 /* Put marker between curve_it1 and curve_it2.
1134                                  * Loop to end_default (so including closing segment), because when a path is closed,
1135                                  * there should be a midpoint marker between last segment and closing straight line segment
1136                                  */
1137                                 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
1138                                 sp_selected_path_outline_add_marker(midmarker_obj, m,
1139                                                                     Geom::Scale(i_style->stroke_width.computed), transform,
1140                                                                     g_repr, xml_doc, doc);
1141
1142                                 ++curve_it1;
1143                                 ++curve_it2;
1144                             }
1145                         }
1146                         // END position
1147                         if ( path_it != (pathv.end()-1) && !path_it->empty()) {
1148                             Geom::Curve const &lastcurve = path_it->back_default();
1149                             Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1150                             sp_selected_path_outline_add_marker( midmarker_obj, m,
1151                                                                  Geom::Scale(i_style->stroke_width.computed), transform,
1152                                                                  g_repr, xml_doc, doc );
1153                         }
1154                     }
1155                 }
1156                 // END marker
1157                 for (int i = 0; i < 4; i += 3) {  // SP_MARKER_LOC and SP_MARKER_LOC_END
1158                     if ( SPObject *marker_obj = shape->marker[i] ) {
1159                         /* Get reference to last curve in the path.
1160                          * For moveto-only path, this returns the "closing line segment". */
1161                         Geom::Path const &path_last = pathv.back();
1162                         unsigned int index = path_last.size_default();
1163                         if (index > 0) {
1164                             index--;
1165                         }
1166                         Geom::Curve const &lastcurve = path_last[index];
1167
1168                         Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1169                         sp_selected_path_outline_add_marker( marker_obj, m,
1170                                                              Geom::Scale(i_style->stroke_width.computed), transform,
1171                                                              g_repr, xml_doc, doc );
1172                     }
1173                 }
1174
1175                 selection->add(g_repr);
1176
1177                 Inkscape::GC::release(g_repr);
1178
1179
1180             } else {
1181
1182                 // add the new repr to the parent
1183                 parent->appendChild(repr);
1184
1185                 // move to the saved position
1186                 repr->setPosition(pos > 0 ? pos : 0);
1187
1188                 // restore title, description, id, transform
1189                 repr->setAttribute("id", id);
1190
1191                 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1192                 newitem->doWriteTransform(repr, transform);
1193                 if (title) {
1194                         newitem->setTitle(title);
1195                 }
1196                 if (desc) {
1197                         newitem->setDesc(desc);
1198                 }
1199
1200                 selection->add(repr);
1201
1202             }
1203
1204             Inkscape::GC::release(repr);
1205
1206             curve->unref();
1207             selection->remove(item);
1208             SP_OBJECT(item)->deleteObject(false);
1209
1210         }
1211         if (title) g_free(title);
1212         if (desc) g_free(desc);
1213
1214         delete res;
1215         delete orig;
1216     }
1217
1218     if (did) {
1219         SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
1220                          _("Convert stroke to path"));
1221     } else {
1222         // TRANSLATORS: "to outline" means "to convert stroke to path"
1223         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
1224         return;
1225     }
1226 }
1227
1228
1229 void
1230 sp_selected_path_offset(SPDesktop *desktop)
1231 {
1232     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1233     double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1234
1235     sp_selected_path_do_offset(desktop, true, prefOffset);
1236 }
1237 void
1238 sp_selected_path_inset(SPDesktop *desktop)
1239 {
1240     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1241     double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1242
1243     sp_selected_path_do_offset(desktop, false, prefOffset);
1244 }
1245
1246 void
1247 sp_selected_path_offset_screen(SPDesktop *desktop, double pixels)
1248 {
1249     sp_selected_path_do_offset(desktop, true,  pixels / desktop->current_zoom());
1250 }
1251
1252 void
1253 sp_selected_path_inset_screen(SPDesktop *desktop, double pixels)
1254 {
1255     sp_selected_path_do_offset(desktop, false,  pixels / desktop->current_zoom());
1256 }
1257
1258
1259 void sp_selected_path_create_offset_object_zero(SPDesktop *desktop)
1260 {
1261     sp_selected_path_create_offset_object(desktop, 0, false);
1262 }
1263
1264 void sp_selected_path_create_offset(SPDesktop *desktop)
1265 {
1266     sp_selected_path_create_offset_object(desktop, 1, false);
1267 }
1268 void sp_selected_path_create_inset(SPDesktop *desktop)
1269 {
1270     sp_selected_path_create_offset_object(desktop, -1, false);
1271 }
1272
1273 void sp_selected_path_create_updating_offset_object_zero(SPDesktop *desktop)
1274 {
1275     sp_selected_path_create_offset_object(desktop, 0, true);
1276 }
1277
1278 void sp_selected_path_create_updating_offset(SPDesktop *desktop)
1279 {
1280     sp_selected_path_create_offset_object(desktop, 1, true);
1281 }
1282 void sp_selected_path_create_updating_inset(SPDesktop *desktop)
1283 {
1284     sp_selected_path_create_offset_object(desktop, -1, true);
1285 }
1286
1287 void
1288 sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating)
1289 {
1290     Inkscape::Selection *selection;
1291     Inkscape::XML::Node *repr;
1292     SPItem *item;
1293     SPCurve *curve;
1294     gchar *style, *str;
1295     float o_width, o_miter;
1296     JoinType o_join;
1297     ButtType o_butt;
1298
1299     curve = NULL;
1300
1301     selection = sp_desktop_selection(desktop);
1302
1303     item = selection->singleItem();
1304
1305     if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
1306         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
1307         return;
1308     }
1309     if (SP_IS_SHAPE(item))
1310     {
1311         curve = SP_SHAPE(item)->getCurve();
1312         if (curve == NULL)
1313             return;
1314     }
1315     if (SP_IS_TEXT(item))
1316     {
1317         curve = SP_TEXT(item)->getNormalizedBpath();
1318         if (curve == NULL)
1319             return;
1320     }
1321
1322     Geom::Matrix const transform(item->transform);
1323
1324     item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1325
1326         //XML Tree being used directly here while it shouldn't be...
1327     style = g_strdup(SP_OBJECT(item)->getRepr()->attribute("style"));
1328
1329     // remember the position of the item
1330     gint pos = SP_OBJECT_REPR(item)->position();
1331     // remember parent
1332     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1333
1334     {
1335         SPStyle *i_style = SP_OBJECT(item)->style;
1336         int jointype, captype;
1337
1338         jointype = i_style->stroke_linejoin.value;
1339         captype = i_style->stroke_linecap.value;
1340         o_width = i_style->stroke_width.computed;
1341         if (jointype == SP_STROKE_LINEJOIN_MITER)
1342         {
1343             o_join = join_pointy;
1344         }
1345         else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1346         {
1347             o_join = join_round;
1348         }
1349         else
1350         {
1351             o_join = join_straight;
1352         }
1353         if (captype == SP_STROKE_LINECAP_SQUARE)
1354         {
1355             o_butt = butt_square;
1356         }
1357         else if (captype == SP_STROKE_LINECAP_ROUND)
1358         {
1359             o_butt = butt_round;
1360         }
1361         else
1362         {
1363             o_butt = butt_straight;
1364         }
1365
1366         {
1367             Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1368             o_width = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1369         }
1370
1371         if (o_width < 0.01)
1372             o_width = 0.01;
1373         o_miter = i_style->stroke_miterlimit.value * o_width;
1374     }
1375
1376     Path *orig = Path_for_item(item, true, false);
1377     if (orig == NULL)
1378     {
1379         g_free(style);
1380         curve->unref();
1381         return;
1382     }
1383
1384     Path *res = new Path;
1385     res->SetBackData(false);
1386
1387     {
1388         Shape *theShape = new Shape;
1389         Shape *theRes = new Shape;
1390
1391         orig->ConvertWithBackData(1.0);
1392         orig->Fill(theShape, 0);
1393
1394         SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1395         gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1396         if (val && strcmp(val, "nonzero") == 0)
1397         {
1398             theRes->ConvertToShape(theShape, fill_nonZero);
1399         }
1400         else if (val && strcmp(val, "evenodd") == 0)
1401         {
1402             theRes->ConvertToShape(theShape, fill_oddEven);
1403         }
1404         else
1405         {
1406             theRes->ConvertToShape(theShape, fill_nonZero);
1407         }
1408
1409         Path *originaux[1];
1410         originaux[0] = orig;
1411         theRes->ConvertToForme(res, 1, originaux);
1412
1413         delete theShape;
1414         delete theRes;
1415     }
1416
1417     curve->unref();
1418
1419     if (res->descr_cmd.size() <= 1)
1420     {
1421         // pas vraiment de points sur le resultat
1422         // donc il ne reste rien
1423         SPDocumentUndo::done(sp_desktop_document(desktop),
1424                          (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1425                           : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1426                          (updating ? _("Create linked offset")
1427                           : _("Create dynamic offset")));
1428         selection->clear();
1429
1430         delete res;
1431         delete orig;
1432         g_free(style);
1433         return;
1434     }
1435
1436     {
1437         gchar tstr[80];
1438
1439         tstr[79] = '\0';
1440
1441         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1442         repr = xml_doc->createElement("svg:path");
1443         repr->setAttribute("sodipodi:type", "inkscape:offset");
1444         sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1445                                                           ? o_width
1446                                                           : expand < 0
1447                                                           ? -o_width
1448                                                           : 0 ));
1449
1450         str = res->svg_dump_path();
1451         repr->setAttribute("inkscape:original", str);
1452         g_free(str);
1453
1454         if ( updating ) {
1455
1456                         //XML Tree being used directly here while it shouldn't be
1457             char const *id = SP_OBJECT(item)->getRepr()->attribute("id");
1458             char const *uri = g_strdup_printf("#%s", id);
1459             repr->setAttribute("xlink:href", uri);
1460             g_free((void *) uri);
1461         } else {
1462             repr->setAttribute("inkscape:href", NULL);
1463         }
1464
1465         repr->setAttribute("style", style);
1466
1467         // add the new repr to the parent
1468         parent->appendChild(repr);
1469
1470         // move to the saved position
1471         repr->setPosition(pos > 0 ? pos : 0);
1472
1473         SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1474
1475         if ( updating ) {
1476             // on conserve l'original
1477             // we reapply the transform to the original (offset will feel it)
1478             item->doWriteTransform(SP_OBJECT_REPR(item), transform);
1479         } else {
1480             // delete original, apply the transform to the offset
1481             SP_OBJECT(item)->deleteObject(false);
1482             nitem->doWriteTransform(repr, transform);
1483         }
1484
1485         // The object just created from a temporary repr is only a seed.
1486         // We need to invoke its write which will update its real repr (in particular adding d=)
1487         SP_OBJECT(nitem)->updateRepr();
1488
1489         Inkscape::GC::release(repr);
1490
1491         selection->set(nitem);
1492     }
1493
1494     SPDocumentUndo::done(sp_desktop_document(desktop),
1495                      (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1496                       : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1497                      (updating ? _("Create linked offset")
1498                       : _("Create dynamic offset")));
1499
1500     delete res;
1501     delete orig;
1502
1503     g_free(style);
1504 }
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517 void
1518 sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset)
1519 {
1520     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1521
1522     if (selection->isEmpty()) {
1523         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1524         return;
1525     }
1526
1527     bool did = false;
1528
1529     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1530          items != NULL;
1531          items = items->next) {
1532
1533         SPItem *item = (SPItem *) items->data;
1534
1535         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1536             continue;
1537
1538         SPCurve *curve = NULL;
1539         if (SP_IS_SHAPE(item)) {
1540             curve = SP_SHAPE(item)->getCurve();
1541             if (curve == NULL)
1542                 continue;
1543         }
1544         if (SP_IS_TEXT(item)) {
1545             curve = SP_TEXT(item)->getNormalizedBpath();
1546             if (curve == NULL)
1547                 continue;
1548         }
1549
1550         Geom::Matrix const transform(item->transform);
1551
1552         item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1553
1554         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1555
1556         float o_width, o_miter;
1557         JoinType o_join;
1558         ButtType o_butt;
1559
1560         {
1561             SPStyle *i_style = SP_OBJECT(item)->style;
1562             int jointype, captype;
1563
1564             jointype = i_style->stroke_linejoin.value;
1565             captype = i_style->stroke_linecap.value;
1566             o_width = i_style->stroke_width.computed;
1567
1568             switch (jointype) {
1569                 case SP_STROKE_LINEJOIN_MITER:
1570                     o_join = join_pointy;
1571                     break;
1572                 case SP_STROKE_LINEJOIN_ROUND:
1573                     o_join = join_round;
1574                     break;
1575                 default:
1576                     o_join = join_straight;
1577                     break;
1578             }
1579
1580             switch (captype) {
1581                 case SP_STROKE_LINECAP_SQUARE:
1582                     o_butt = butt_square;
1583                     break;
1584                 case SP_STROKE_LINECAP_ROUND:
1585                     o_butt = butt_round;
1586                     break;
1587                 default:
1588                     o_butt = butt_straight;
1589                     break;
1590             }
1591
1592             o_width = prefOffset;
1593
1594             if (o_width < 0.1)
1595                 o_width = 0.1;
1596             o_miter = i_style->stroke_miterlimit.value * o_width;
1597         }
1598
1599         Path *orig = Path_for_item(item, false);
1600         if (orig == NULL) {
1601             g_free(style);
1602             curve->unref();
1603             continue;
1604         }
1605
1606         Path *res = new Path;
1607         res->SetBackData(false);
1608
1609         {
1610             Shape *theShape = new Shape;
1611             Shape *theRes = new Shape;
1612
1613             orig->ConvertWithBackData(0.03);
1614             orig->Fill(theShape, 0);
1615
1616             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1617             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1618             if (val && strcmp(val, "nonzero") == 0)
1619             {
1620                 theRes->ConvertToShape(theShape, fill_nonZero);
1621             }
1622             else if (val && strcmp(val, "evenodd") == 0)
1623             {
1624                 theRes->ConvertToShape(theShape, fill_oddEven);
1625             }
1626             else
1627             {
1628                 theRes->ConvertToShape(theShape, fill_nonZero);
1629             }
1630
1631             // et maintenant: offset
1632             // methode inexacte
1633 /*                      Path *originaux[1];
1634                         originaux[0] = orig;
1635                         theRes->ConvertToForme(res, 1, originaux);
1636
1637                         if (expand) {
1638                         res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1639                         } else {
1640                         res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1641                         }
1642
1643                         orig->ConvertWithBackData(1.0);
1644                         orig->Fill(theShape, 0);
1645                         theRes->ConvertToShape(theShape, fill_positive);
1646                         originaux[0] = orig;
1647                         theRes->ConvertToForme(res, 1, originaux);
1648
1649                         if (o_width >= 0.5) {
1650                         //     res->Coalesce(1.0);
1651                         res->ConvertEvenLines(1.0);
1652                         res->Simplify(1.0);
1653                         } else {
1654                         //      res->Coalesce(o_width);
1655                         res->ConvertEvenLines(1.0*o_width);
1656                         res->Simplify(1.0 * o_width);
1657                         }    */
1658             // methode par makeoffset
1659
1660             if (expand)
1661             {
1662                 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1663             }
1664             else
1665             {
1666                 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1667             }
1668             theRes->ConvertToShape(theShape, fill_positive);
1669
1670             res->Reset();
1671             theRes->ConvertToForme(res);
1672
1673             if (o_width >= 1.0)
1674             {
1675                 res->ConvertEvenLines(1.0);
1676                 res->Simplify(1.0);
1677             }
1678             else
1679             {
1680                 res->ConvertEvenLines(1.0*o_width);
1681                 res->Simplify(1.0 * o_width);
1682             }
1683
1684             delete theShape;
1685             delete theRes;
1686         }
1687
1688         did = true;
1689
1690         curve->unref();
1691         // remember the position of the item
1692         gint pos = SP_OBJECT_REPR(item)->position();
1693         // remember parent
1694         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1695         // remember id
1696         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1697
1698         selection->remove(item);
1699         SP_OBJECT(item)->deleteObject(false);
1700
1701         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1702
1703             gchar tstr[80];
1704
1705             tstr[79] = '\0';
1706
1707             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1708             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1709
1710             repr->setAttribute("style", style);
1711
1712             gchar *str = res->svg_dump_path();
1713             repr->setAttribute("d", str);
1714             g_free(str);
1715
1716             // add the new repr to the parent
1717             parent->appendChild(repr);
1718
1719             // move to the saved position
1720             repr->setPosition(pos > 0 ? pos : 0);
1721
1722             SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1723
1724             // reapply the transform
1725             newitem->doWriteTransform(repr, transform);
1726
1727             repr->setAttribute("id", id);
1728
1729             selection->add(repr);
1730
1731             Inkscape::GC::release(repr);
1732         }
1733
1734         delete orig;
1735         delete res;
1736     }
1737
1738     if (did) {
1739         SPDocumentUndo::done(sp_desktop_document(desktop),
1740                          (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1741                          (expand ? _("Outset path") : _("Inset path")));
1742     } else {
1743         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1744         return;
1745     }
1746 }
1747
1748
1749 static bool
1750 sp_selected_path_simplify_items(SPDesktop *desktop,
1751                                 Inkscape::Selection *selection, GSList *items,
1752                                 float threshold,  bool justCoalesce,
1753                                 float angleLimit, bool breakableAngles,
1754                                 bool modifySelection);
1755
1756
1757 //return true if we changed something, else false
1758 bool
1759 sp_selected_path_simplify_item(SPDesktop *desktop,
1760                  Inkscape::Selection *selection, SPItem *item,
1761                  float threshold,  bool justCoalesce,
1762                  float angleLimit, bool breakableAngles,
1763                  gdouble size,     bool modifySelection)
1764 {
1765     if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1766         return false;
1767
1768     //If this is a group, do the children instead
1769     if (SP_IS_GROUP(item)) {
1770         GSList *items = sp_item_group_item_list(SP_GROUP(item));
1771
1772         return sp_selected_path_simplify_items(desktop, selection, items,
1773                                                threshold, justCoalesce,
1774                                                angleLimit, breakableAngles,
1775                                                false);
1776     }
1777
1778
1779     SPCurve *curve = NULL;
1780
1781     if (SP_IS_SHAPE(item)) {
1782         curve = SP_SHAPE(item)->getCurve();
1783         if (!curve)
1784             return false;
1785     }
1786
1787     if (SP_IS_TEXT(item)) {
1788         curve = SP_TEXT(item)->getNormalizedBpath();
1789         if (!curve)
1790             return false;
1791     }
1792
1793     // correct virtual size by full transform (bug #166937)
1794     size /= item->i2doc_affine().descrim();
1795
1796     // save the transform, to re-apply it after simplification
1797     Geom::Matrix const transform(item->transform);
1798
1799     /*
1800        reset the transform, effectively transforming the item by transform.inverse();
1801        this is necessary so that the item is transformed twice back and forth,
1802        allowing all compensations to cancel out regardless of the preferences
1803     */
1804     item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1805
1806     gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1807     gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1808     gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1809
1810     Path *orig = Path_for_item(item, false);
1811     if (orig == NULL) {
1812         g_free(style);
1813         curve->unref();
1814         return false;
1815     }
1816
1817     curve->unref();
1818     // remember the position of the item
1819     gint pos = SP_OBJECT_REPR(item)->position();
1820     // remember parent
1821     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1822     // remember id
1823     char const *id = SP_OBJECT_REPR(item)->attribute("id");
1824     // remember path effect
1825     char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1826     // remember title
1827     gchar *title = item->title();
1828     // remember description
1829     gchar *desc = item->desc();
1830
1831     //If a group was selected, to not change the selection list
1832     if (modifySelection)
1833         selection->remove(item);
1834
1835     SP_OBJECT(item)->deleteObject(false);
1836
1837     if ( justCoalesce ) {
1838         orig->Coalesce(threshold * size);
1839     } else {
1840         orig->ConvertEvenLines(threshold * size);
1841         orig->Simplify(threshold * size);
1842     }
1843
1844     Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1845     Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1846
1847     // restore style, mask and clip-path
1848     repr->setAttribute("style", style);
1849     g_free(style);
1850
1851     if ( mask ) {
1852         repr->setAttribute("mask", mask);
1853         g_free(mask);
1854     }
1855
1856     if ( clip_path ) {
1857         repr->setAttribute("clip-path", clip_path);
1858         g_free(clip_path);
1859     }
1860
1861     // restore path effect
1862     repr->setAttribute("inkscape:path-effect", patheffect);
1863
1864     // path
1865     gchar *str = orig->svg_dump_path();
1866     if (patheffect)
1867         repr->setAttribute("inkscape:original-d", str);
1868     else
1869         repr->setAttribute("d", str);
1870     g_free(str);
1871
1872     // restore id
1873     repr->setAttribute("id", id);
1874
1875     // add the new repr to the parent
1876     parent->appendChild(repr);
1877
1878     // move to the saved position
1879     repr->setPosition(pos > 0 ? pos : 0);
1880
1881     SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1882
1883     // reapply the transform
1884     newitem->doWriteTransform(repr, transform);
1885
1886     // restore title & description
1887     if (title) {
1888         newitem->setTitle(title);
1889         g_free(title);
1890     }
1891     if (desc) {
1892         newitem->setDesc(desc);
1893         g_free(desc);
1894     }
1895
1896     //If we are not in a selected group
1897     if (modifySelection)
1898         selection->add(repr);
1899
1900     Inkscape::GC::release(repr);
1901
1902     // clean up
1903     if (orig) delete orig;
1904
1905     return true;
1906 }
1907
1908
1909 bool
1910 sp_selected_path_simplify_items(SPDesktop *desktop,
1911                                 Inkscape::Selection *selection, GSList *items,
1912                                 float threshold,  bool justCoalesce,
1913                                 float angleLimit, bool breakableAngles,
1914                                 bool modifySelection)
1915 {
1916     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1917     bool simplifyIndividualPaths = prefs->getBool("/options/simplifyindividualpaths/value");
1918
1919     gchar *simplificationType;
1920     if (simplifyIndividualPaths) {
1921         simplificationType = _("Simplifying paths (separately):");
1922     } else {
1923         simplificationType = _("Simplifying paths:");
1924     }
1925
1926     bool didSomething = false;
1927
1928     Geom::OptRect selectionBbox = selection->bounds();
1929     if (!selectionBbox) {
1930         return false;
1931     }
1932     gdouble selectionSize  = L2(selectionBbox->dimensions());
1933
1934     gdouble simplifySize  = selectionSize;
1935
1936     int pathsSimplified = 0;
1937     int totalPathCount  = g_slist_length(items);
1938
1939     // set "busy" cursor
1940     desktop->setWaitingCursor();
1941
1942     for (; items != NULL; items = items->next) {
1943         SPItem *item = (SPItem *) items->data;
1944
1945         if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1946           continue;
1947
1948         if (simplifyIndividualPaths) {
1949             Geom::OptRect itemBbox = item->getBounds(item->i2d_affine());
1950             if (itemBbox) {
1951                 simplifySize      = L2(itemBbox->dimensions());
1952             } else {
1953                 simplifySize      = 0;
1954             }
1955         }
1956
1957         pathsSimplified++;
1958
1959         if (pathsSimplified % 20 == 0) {
1960             gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."),
1961                 simplificationType, pathsSimplified, totalPathCount);
1962             desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1963         }
1964
1965         didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1966             threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1967     }
1968
1969     desktop->clearWaitingCursor();
1970
1971     if (pathsSimplified > 20) {
1972         desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1973     }
1974
1975     return didSomething;
1976 }
1977
1978 void
1979 sp_selected_path_simplify_selection(SPDesktop *desktop, float threshold, bool justCoalesce,
1980                                     float angleLimit, bool breakableAngles)
1981 {
1982     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1983
1984     if (selection->isEmpty()) {
1985         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1986                          _("Select <b>path(s)</b> to simplify."));
1987         return;
1988     }
1989
1990     GSList *items = g_slist_copy((GSList *) selection->itemList());
1991
1992     bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1993                                                         items, threshold,
1994                                                         justCoalesce,
1995                                                         angleLimit,
1996                                                         breakableAngles, true);
1997
1998     if (didSomething)
1999         SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
2000                          _("Simplify"));
2001     else
2002         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
2003
2004 }
2005
2006
2007 // globals for keeping track of accelerated simplify
2008 static double previousTime      = 0.0;
2009 static gdouble simplifyMultiply = 1.0;
2010
2011 void
2012 sp_selected_path_simplify(SPDesktop *desktop)
2013 {
2014     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
2015     gdouble simplifyThreshold =
2016         prefs->getDouble("/options/simplifythreshold/value", 0.003);
2017     bool simplifyJustCoalesce = prefs->getBool("/options/simplifyjustcoalesce/value", 0);
2018
2019     //Get the current time
2020     GTimeVal currentTimeVal;
2021     g_get_current_time(&currentTimeVal);
2022     double currentTime = currentTimeVal.tv_sec * 1000000 +
2023                 currentTimeVal.tv_usec;
2024
2025     //Was the previous call to this function recent? (<0.5 sec)
2026     if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
2027
2028         // add to the threshold 1/2 of its original value
2029         simplifyMultiply  += 0.5;
2030         simplifyThreshold *= simplifyMultiply;
2031
2032     } else {
2033         // reset to the default
2034         simplifyMultiply = 1;
2035     }
2036
2037     //remember time for next call
2038     previousTime = currentTime;
2039
2040     //g_print("%g\n", simplify_threshold);
2041
2042     //Make the actual call
2043     sp_selected_path_simplify_selection(desktop, simplifyThreshold,
2044                                         simplifyJustCoalesce, 0.0, false);
2045 }
2046
2047
2048
2049 // fonctions utilitaires
2050
2051 bool
2052 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
2053 {
2054     if (who == NULL || a == NULL)
2055         return false;
2056     if (who == a)
2057         return true;
2058     return Ancetre(sp_repr_parent(a), who);
2059 }
2060
2061 Path *
2062 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
2063 {
2064     SPCurve *curve = curve_for_item(item);
2065
2066     if (curve == NULL)
2067         return NULL;
2068
2069     Geom::PathVector *pathv = pathvector_for_curve(item, curve, doTransformation, transformFull, Geom::identity(), Geom::identity());
2070     curve->unref();
2071
2072     Path *dest = new Path;
2073     dest->LoadPathVector(*pathv);
2074     delete pathv;
2075
2076     return dest;
2077 }
2078
2079 /*
2080  * NOTE: Returns empty pathvector if curve == NULL
2081  * TODO: see if calling this method can be optimized. All the pathvector copying might be slow.
2082  */
2083 Geom::PathVector*
2084 pathvector_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull, Geom::Matrix extraPreAffine, Geom::Matrix extraPostAffine)
2085 {
2086     if (curve == NULL)
2087         return NULL;
2088
2089     Geom::PathVector *dest = new Geom::PathVector;
2090     *dest = curve->get_pathvector(); // Make a copy; must be freed by the caller!
2091
2092     if (doTransformation) {
2093         if (transformFull) {
2094             *dest *= extraPreAffine * item->i2doc_affine() * extraPostAffine;
2095         } else {
2096             *dest *= extraPreAffine * (Geom::Matrix)item->transform * extraPostAffine;
2097         }
2098     } else {
2099         *dest *= extraPreAffine * extraPostAffine;
2100     }
2101
2102     return dest;
2103 }
2104
2105 SPCurve* curve_for_item(SPItem *item)
2106 {
2107     if (!item)
2108         return NULL;
2109
2110     SPCurve *curve = NULL;
2111     if (SP_IS_SHAPE(item)) {
2112         if (SP_IS_PATH(item)) {
2113             curve = sp_path_get_curve_for_edit(SP_PATH(item));
2114         } else {
2115             curve = SP_SHAPE(item)->getCurve();
2116         }
2117     }
2118     else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
2119     {
2120         curve = te_get_layout(item)->convertToCurves();
2121     }
2122     else if (SP_IS_IMAGE(item))
2123     {
2124     curve = sp_image_get_curve(SP_IMAGE(item));
2125     }
2126
2127     return curve; // do not forget to unref the curve at some point!
2128 }
2129
2130 boost::optional<Path::cut_position> get_nearest_position_on_Path(Path *path, Geom::Point p, unsigned seg)
2131 {
2132     //get nearest position on path
2133     Path::cut_position pos = path->PointToCurvilignPosition(p, seg);
2134     return pos;
2135 }
2136
2137 Geom::Point get_point_on_Path(Path *path, int piece, double t)
2138 {
2139     Geom::Point p;
2140     path->PointAt(piece, t, p);
2141     return p;
2142 }
2143
2144
2145 /*
2146   Local Variables:
2147   mode:c++
2148   c-file-style:"stroustrup"
2149   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
2150   indent-tabs-mode:nil
2151   fill-column:99
2152   End:
2153 */
2154 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :