src/splivarot.cpp

   1 /*
   2  *  splivarot.cpp
   3  *  Inkscape
   4  *
   5  *  Created by fred on Fri Dec 05 2003.
   6  *  tweaked endlessly by bulia byak <buliabyak@users.sf.net>
   7  *  public domain
   8  *
   9  */
  10
  11 /*
  12  * contains lots of stitched pieces of path-chemistry.c
  13  */
  14
  15 #ifdef HAVE_CONFIG_H
  16 # include <config.h>
  17 #endif
  18
  19 #include <cstring>
  20 #include <string>
  21 #include <vector>
  22 #include <glib/gmem.h>
  23 #include "xml/repr.h"
  24 #include "svg/svg.h"
  25 #include "sp-path.h"
  26 #include "sp-shape.h"
  27 #include "sp-image.h"
  28 #include "marker.h"
  29 #include "enums.h"
  30 #include "sp-text.h"
  31 #include "sp-flowtext.h"
  32 #include "text-editing.h"
  33 #include "sp-item-group.h"
  34 #include "style.h"
  35 #include "document.h"
  36 #include "message-stack.h"
  37 #include "selection.h"
  38 #include "desktop-handles.h"
  39 #include "desktop.h"
  40 #include "display/canvas-bpath.h"
  41 #include "display/curve.h"
  42 #include <glibmm/i18n.h>
  43 #include "preferences.h"
  44
  45 #include "xml/repr.h"
  46 #include "xml/repr-sorting.h"
  47 #include <2geom/pathvector.h>
  48 #include <libnr/nr-scale-matrix-ops.h>
  49 #include "helper/geom.h"
  50
  51 #include "livarot/Path.h"
  52 #include "livarot/Shape.h"
  53
  54 #include "splivarot.h"
  55
  56 using Inkscape::DocumentUndo;
  57
  58 bool   Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
  59
  60 void sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
  61 void sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset);
  62 void sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating);
  63
  64 void
  65 sp_selected_path_union(SPDesktop *desktop)
  66 {
  67     sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
  68 }
  69
  70 void
  71 sp_selected_path_union_skip_undo(SPDesktop *desktop)
  72 {
  73     sp_selected_path_boolop(desktop, bool_op_union, SP_VERB_NONE, _("Union"));
  74 }
  75
  76 void
  77 sp_selected_path_intersect(SPDesktop *desktop)
  78 {
  79     sp_selected_path_boolop(desktop, bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
  80 }
  81
  82 void
  83 sp_selected_path_diff(SPDesktop *desktop)
  84 {
  85     sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
  86 }
  87
  88 void
  89 sp_selected_path_diff_skip_undo(SPDesktop *desktop)
  90 {
  91     sp_selected_path_boolop(desktop, bool_op_diff, SP_VERB_NONE, _("Difference"));
  92 }
  93
  94 void
  95 sp_selected_path_symdiff(SPDesktop *desktop)
  96 {
  97     sp_selected_path_boolop(desktop, bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
  98 }
  99 void
 100 sp_selected_path_cut(SPDesktop *desktop)
 101 {
 102     sp_selected_path_boolop(desktop, bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
 103 }
 104 void
 105 sp_selected_path_slice(SPDesktop *desktop)
 106 {
 107     sp_selected_path_boolop(desktop, bool_op_slice, SP_VERB_SELECTION_SLICE,  _("Cut path"));
 108 }
 109
 110
 111 // boolean operations
 112 // take the source paths from the file, do the operation, delete the originals and add the results
 113 void
 114 sp_selected_path_boolop(SPDesktop *desktop, bool_op bop, const unsigned int verb, const Glib::ustring description)
 115 {
 116     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 117
 118     GSList *il = (GSList *) selection->itemList();
 119
 120     // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
 121     if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
 122         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
 123         return;
 124     }
 125     else if ( g_slist_length(il) < 1 ) {
 126         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
 127         return;
 128     }
 129
 130     if (g_slist_length(il) > 2) {
 131         if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
 132             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, division, or path cut."));
 133             return;
 134         }
 135     }
 136
 137     // reverseOrderForOp marks whether the order of the list is the top->down order
 138     // it's only used when there are 2 objects, and for operations who need to know the
 139     // topmost object (differences, cuts)
 140     bool reverseOrderForOp = false;
 141
 142     if (bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice) {
 143         // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
 144         Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
 145         Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
 146
 147         if (a == NULL || b == NULL) {
 148             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."));
 149             return;
 150         }
 151
 152         if (Ancetre(a, b)) {
 153             // a is the parent of b, already in the proper order
 154         } else if (Ancetre(b, a)) {
 155             // reverse order
 156             reverseOrderForOp = true;
 157         } else {
 158
 159             // objects are not in parent/child relationship;
 160             // find their lowest common ancestor
 161             Inkscape::XML::Node *dad = LCA(a, b);
 162             if (dad == NULL) {
 163                 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."));
 164                 return;
 165             }
 166
 167             // find the children of the LCA that lead from it to the a and b
 168             Inkscape::XML::Node *as = AncetreFils(a, dad);
 169             Inkscape::XML::Node *bs = AncetreFils(b, dad);
 170
 171             // find out which comes first
 172             for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
 173                 if (child == as) {
 174                     /* a first, so reverse. */
 175                     reverseOrderForOp = true;
 176                     break;
 177                 }
 178                 if (child == bs)
 179                     break;
 180             }
 181         }
 182     }
 183
 184     il = g_slist_copy(il);
 185
 186     // first check if all the input objects have shapes
 187     // otherwise bail out
 188     for (GSList *l = il; l != NULL; l = l->next)
 189     {
 190         SPItem *item = SP_ITEM(l->data);
 191         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
 192         {
 193             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
 194             g_slist_free(il);
 195             return;
 196         }
 197     }
 198
 199     // extract the livarot Paths from the source objects
 200     // also get the winding rule specified in the style
 201     int nbOriginaux = g_slist_length(il);
 202     std::vector<Path *> originaux(nbOriginaux);
 203     std::vector<FillRule> origWind(nbOriginaux);
 204     int curOrig;
 205     {
 206         curOrig = 0;
 207         for (GSList *l = il; l != NULL; l = l->next)
 208         {
 209             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
 210             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
 211             if (val && strcmp(val, "nonzero") == 0) {
 212                 origWind[curOrig]= fill_nonZero;
 213             } else if (val && strcmp(val, "evenodd") == 0) {
 214                 origWind[curOrig]= fill_oddEven;
 215             } else {
 216                 origWind[curOrig]= fill_nonZero;
 217             }
 218
 219             originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
 220             if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
 221             {
 222                 for (int i = curOrig; i >= 0; i--) delete originaux[i];
 223                 g_slist_free(il);
 224                 return;
 225             }
 226             curOrig++;
 227         }
 228     }
 229     // reverse if needed
 230     // note that the selection list keeps its order
 231     if ( reverseOrderForOp ) {
 232         Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 233         FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
 234     }
 235
 236     // and work
 237     // some temporary instances, first
 238     Shape *theShapeA = new Shape;
 239     Shape *theShapeB = new Shape;
 240     Shape *theShape = new Shape;
 241     Path *res = new Path;
 242     res->SetBackData(false);
 243     Path::cut_position  *toCut=NULL;
 244     int                  nbToCut=0;
 245
 246     if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
 247         // true boolean op
 248         // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
 249         originaux[0]->ConvertWithBackData(0.1);
 250
 251         originaux[0]->Fill(theShape, 0);
 252
 253         theShapeA->ConvertToShape(theShape, origWind[0]);
 254
 255         curOrig = 1;
 256         for (GSList *l = il->next; l != NULL; l = l->next) {
 257             originaux[curOrig]->ConvertWithBackData(0.1);
 258
 259             originaux[curOrig]->Fill(theShape, curOrig);
 260
 261             theShapeB->ConvertToShape(theShape, origWind[curOrig]);
 262
 263             // les elements arrivent en ordre inverse dans la liste
 264             theShape->Booleen(theShapeB, theShapeA, bop);
 265
 266             {
 267                 Shape *swap = theShape;
 268                 theShape = theShapeA;
 269                 theShapeA = swap;
 270             }
 271             curOrig++;
 272         }
 273
 274         {
 275             Shape *swap = theShape;
 276             theShape = theShapeA;
 277             theShapeA = swap;
 278         }
 279
 280     } else if ( bop == bool_op_cut ) {
 281         // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
 282         // technically, the cut path is not necessarily a polygon (thus has no winding rule)
 283         // it is just uncrossed, and cleaned from duplicate edges and points
 284         // then it's fed to Booleen() which will uncross it against the other path
 285         // then comes the trick: each edge of the cut path is duplicated (one in each direction),
 286         // thus making a polygon. the weight of the edges of the cut are all 0, but
 287         // the Booleen need to invert the ones inside the source polygon (for the subsequent
 288         // ConvertToForme)
 289
 290         // the cut path needs to have the highest pathID in the back data
 291         // that's how the Booleen() function knows it's an edge of the cut
 292
 293         // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
 294         // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
 295         // left it at 1.0. Investigate replacing this by a combination of difference and
 296         // intersection of the same two paths. -- bb
 297         {
 298             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 299             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 300         }
 301         originaux[0]->ConvertWithBackData(1.0);
 302
 303         originaux[0]->Fill(theShape, 0);
 304
 305         theShapeA->ConvertToShape(theShape, origWind[0]);
 306
 307         originaux[1]->ConvertWithBackData(1.0);
 308
 309         originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
 310
 311         theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
 312
 313         // les elements arrivent en ordre inverse dans la liste
 314         theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
 315
 316     } else if ( bop == bool_op_slice ) {
 317         // slice is not really a boolean operation
 318         // you just put the 2 shapes in a single polygon, uncross it
 319         // the points where the degree is > 2 are intersections
 320         // just check it's an intersection on the path you want to cut, and keep it
 321         // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
 322         // make new subpath at each one of these positions
 323         // inversion pour l'op\8eration
 324         {
 325             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 326             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 327         }
 328         originaux[0]->ConvertWithBackData(1.0);
 329
 330         originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
 331
 332         originaux[1]->ConvertWithBackData(1.0);
 333
 334         originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
 335
 336         theShape->ConvertToShape(theShapeA, fill_justDont);
 337
 338         if ( theShape->hasBackData() ) {
 339             // should always be the case, but ya never know
 340             {
 341                 for (int i = 0; i < theShape->numberOfPoints(); i++) {
 342                     if ( theShape->getPoint(i).totalDegree() > 2 ) {
 343                         // possibly an intersection
 344                         // we need to check that at least one edge from the source path is incident to it
 345                         // before we declare it's an intersection
 346                         int cb = theShape->getPoint(i).incidentEdge[FIRST];
 347                         int   nbOrig=0;
 348                         int   nbOther=0;
 349                         int   piece=-1;
 350                         float t=0.0;
 351                         while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
 352                             if ( theShape->ebData[cb].pathID == 0 ) {
 353                                 // the source has an edge incident to the point, get its position on the path
 354                                 piece=theShape->ebData[cb].pieceID;
 355                                 if ( theShape->getEdge(cb).st == i ) {
 356                                     t=theShape->ebData[cb].tSt;
 357                                 } else {
 358                                     t=theShape->ebData[cb].tEn;
 359                                 }
 360                                 nbOrig++;
 361                             }
 362                             if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
 363                             cb=theShape->NextAt(i, cb);
 364                         }
 365                         if ( nbOrig > 0 && nbOther > 0 ) {
 366                             // point incident to both path and cut: an intersection
 367                             // note that you only keep one position on the source; you could have degenerate
 368                             // cases where the source crosses itself at this point, and you wouyld miss an intersection
 369                             toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
 370                             toCut[nbToCut].piece=piece;
 371                             toCut[nbToCut].t=t;
 372                             nbToCut++;
 373                         }
 374                     }
 375                 }
 376             }
 377             {
 378                 // i think it's useless now
 379                 int i = theShape->numberOfEdges() - 1;
 380                 for (;i>=0;i--) {
 381                     if ( theShape->ebData[i].pathID == 1 ) {
 382                         theShape->SubEdge(i);
 383                     }
 384                 }
 385             }
 386
 387         }
 388     }
 389
 390     int*    nesting=NULL;
 391     int*    conts=NULL;
 392     int     nbNest=0;
 393     // pour compenser le swap juste avant
 394     if ( bop == bool_op_slice ) {
 395 //    theShape->ConvertToForme(res, nbOriginaux, originaux, true);
 396 //    res->ConvertForcedToMoveTo();
 397         res->Copy(originaux[0]);
 398         res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
 399         free(toCut);
 400     } else if ( bop == bool_op_cut ) {
 401         // il faut appeler pour desallouer PointData (pas vital, mais bon)
 402         // the Booleen() function did not deallocated the point_data array in theShape, because this
 403         // function needs it.
 404         // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
 405         // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
 406         theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
 407     } else {
 408         theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
 409     }
 410
 411     delete theShape;
 412     delete theShapeA;
 413     delete theShapeB;
 414     for (int i = 0; i < nbOriginaux; i++)  delete originaux[i];
 415
 416     if (res->descr_cmd.size() <= 1)
 417     {
 418         // only one command, presumably a moveto: it isn't a path
 419         for (GSList *l = il; l != NULL; l = l->next)
 420         {
 421             SP_OBJECT(l->data)->deleteObject();
 422         }
 423         DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE,
 424                            description);
 425         selection->clear();
 426
 427         delete res;
 428         g_slist_free(il);
 429         return;
 430     }
 431
 432     // get the source path object
 433     SPObject *source;
 434     if ( bop == bool_op_diff || bop == bool_op_cut || bop == bool_op_slice ) {
 435         if (reverseOrderForOp) {
 436              source = SP_OBJECT(il->data);
 437         } else {
 438              source = SP_OBJECT(il->next->data);
 439         }
 440     } else {
 441         // find out the bottom object
 442         GSList *sorted = g_slist_copy((GSList *) selection->reprList());
 443
 444         sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
 445
 446         source = sp_desktop_document(desktop)->
 447             getObjectByRepr((Inkscape::XML::Node *)sorted->data);
 448
 449         g_slist_free(sorted);
 450     }
 451
 452     // adjust style properties that depend on a possible transform in the source object in order
 453     // to get a correct style attribute for the new path
 454     SPItem* item_source = SP_ITEM(source);
 455     Geom::Matrix i2doc(item_source->i2doc_affine());
 456     item_source->adjust_stroke(i2doc.descrim());
 457     item_source->adjust_pattern(i2doc);
 458     item_source->adjust_gradient(i2doc);
 459     item_source->adjust_livepatheffect(i2doc);
 460
 461     Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
 462
 463     // remember important aspects of the source path, to be restored
 464     gint pos = repr_source->position();
 465     Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
 466     gchar const *id = repr_source->attribute("id");
 467     gchar const *style = repr_source->attribute("style");
 468     gchar const *mask = repr_source->attribute("mask");
 469     gchar const *clip_path = repr_source->attribute("clip-path");
 470     gchar *title = source->title();
 471     gchar *desc = source->desc();
 472     // remove source paths
 473     selection->clear();
 474     for (GSList *l = il; l != NULL; l = l->next) {
 475         // if this is the bottommost object,
 476         if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
 477             // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
 478             SP_OBJECT(l->data)->deleteObject(false);
 479         } else {
 480             // delete the object for real, so that its clones can take appropriate action
 481             SP_OBJECT(l->data)->deleteObject();
 482         }
 483     }
 484     g_slist_free(il);
 485
 486     // premultiply by the inverse of parent's repr
 487     SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
 488     Geom::Matrix local (parent_item->i2doc_affine());
 489     gchar *transform = sp_svg_transform_write(local.inverse());
 490
 491     // now that we have the result, add it on the canvas
 492     if ( bop == bool_op_cut || bop == bool_op_slice ) {
 493         int    nbRP=0;
 494         Path** resPath;
 495         if ( bop == bool_op_slice ) {
 496             // there are moveto's at each intersection, but it's still one unique path
 497             // so break it down and add each subpath independently
 498             // we could call break_apart to do this, but while we have the description...
 499             resPath=res->SubPaths(nbRP, false);
 500         } else {
 501             // cut operation is a bit wicked: you need to keep holes
 502             // that's why you needed the nesting
 503             // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
 504             // to get the path for each part of the polygon. that's why you need the nesting info:
 505             // to know in wich subpath to add a subpath
 506             resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
 507
 508             // cleaning
 509             if ( conts ) free(conts);
 510             if ( nesting ) free(nesting);
 511         }
 512
 513         // add all the pieces resulting from cut or slice
 514         for (int i=0;i<nbRP;i++) {
 515             gchar *d = resPath[i]->svg_dump_path();
 516
 517             Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
 518             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
 519             repr->setAttribute("style", style);
 520             if (mask)
 521                 repr->setAttribute("mask", mask);
 522             if (clip_path)
 523                 repr->setAttribute("clip-path", clip_path);
 524
 525             repr->setAttribute("d", d);
 526             g_free(d);
 527
 528             // for slice, remove fill
 529             if (bop == bool_op_slice) {
 530                 SPCSSAttr *css;
 531
 532                 css = sp_repr_css_attr_new();
 533                 sp_repr_css_set_property(css, "fill", "none");
 534
 535                 sp_repr_css_change(repr, css, "style");
 536
 537                 sp_repr_css_attr_unref(css);
 538             }
 539
 540             // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
 541             // this means it's basically random which of the pieces inherits the original's id and clones
 542             // a better algorithm might figure out e.g. the biggest piece
 543             repr->setAttribute("id", id);
 544
 545             repr->setAttribute("transform", transform);
 546
 547             // add the new repr to the parent
 548             parent->appendChild(repr);
 549
 550             // move to the saved position
 551             repr->setPosition(pos > 0 ? pos : 0);
 552
 553             selection->add(repr);
 554             Inkscape::GC::release(repr);
 555
 556             delete resPath[i];
 557         }
 558         if ( resPath ) free(resPath);
 559
 560     } else {
 561         gchar *d = res->svg_dump_path();
 562
 563         Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
 564         Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
 565         repr->setAttribute("style", style);
 566
 567         if ( mask )
 568             repr->setAttribute("mask", mask);
 569
 570         if ( clip_path )
 571             repr->setAttribute("clip-path", clip_path);
 572
 573         repr->setAttribute("d", d);
 574         g_free(d);
 575
 576         repr->setAttribute("transform", transform);
 577
 578         repr->setAttribute("id", id);
 579         parent->appendChild(repr);
 580         if (title) {
 581                 sp_desktop_document(desktop)->getObjectByRepr(repr)->setTitle(title);
 582         }
 583         if (desc) {
 584                 sp_desktop_document(desktop)->getObjectByRepr(repr)->setDesc(desc);
 585         }
 586                 repr->setPosition(pos > 0 ? pos : 0);
 587
 588         selection->add(repr);
 589         Inkscape::GC::release(repr);
 590     }
 591
 592     g_free(transform);
 593     if (title) g_free(title);
 594     if (desc) g_free(desc);
 595
 596     if (verb != SP_VERB_NONE) {
 597         DocumentUndo::done(sp_desktop_document(desktop), verb, description);
 598     }
 599
 600     delete res;
 601 }
 602
 603 static
 604 void sp_selected_path_outline_add_marker( SPObject *marker_object, Geom::Matrix marker_transform,
 605                                           Geom::Scale stroke_scale, Geom::Matrix transform,
 606                                           Inkscape::XML::Node *g_repr, Inkscape::XML::Document *xml_doc, SPDocument * doc )
 607 {
 608     SPMarker* marker = SP_MARKER (marker_object);
 609     SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (marker_object));
 610
 611     Geom::Matrix tr(marker_transform);
 612
 613     if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
 614         tr = stroke_scale * tr;
 615     }
 616
 617     // total marker transform
 618     tr = marker_item->transform * marker->c2p * tr * transform;
 619
 620     if (SP_OBJECT_REPR(marker_item)) {
 621         Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
 622         g_repr->appendChild(m_repr);
 623         SPItem *marker_item = (SPItem *) doc->getObjectByRepr(m_repr);
 624         marker_item->doWriteTransform(m_repr, tr);
 625     }
 626 }
 627
 628 static
 629 void item_outline_add_marker( SPObject const *marker_object, Geom::Matrix marker_transform,
 630                               Geom::Scale stroke_scale, 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;
 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     if (curve->get_pathvector().empty()) {
 679         return ret_pathv;
 680     }
 681
 682     // remember old stroke style, to be set on fill
 683     SPStyle *i_style = SP_OBJECT_STYLE(item);
 684
 685     Geom::Matrix const transform(item->transform);
 686     float const scale = transform.descrim();
 687
 688     float o_width, o_miter;
 689     JoinType o_join;
 690     ButtType o_butt;
 691     {
 692         o_width = i_style->stroke_width.computed;
 693         if (o_width < 0.1) {
 694             o_width = 0.1;
 695         }
 696         o_miter = i_style->stroke_miterlimit.value * o_width;
 697
 698         switch (i_style->stroke_linejoin.computed) {
 699             case SP_STROKE_LINEJOIN_MITER:
 700                 o_join = join_pointy;
 701                 break;
 702             case SP_STROKE_LINEJOIN_ROUND:
 703                 o_join = join_round;
 704                 break;
 705             default:
 706                 o_join = join_straight;
 707                 break;
 708         }
 709
 710         switch (i_style->stroke_linecap.computed) {
 711             case SP_STROKE_LINECAP_SQUARE:
 712                 o_butt = butt_square;
 713                 break;
 714             case SP_STROKE_LINECAP_ROUND:
 715                 o_butt = butt_round;
 716                 break;
 717             default:
 718                 o_butt = butt_straight;
 719                 break;
 720         }
 721     }
 722
 723     // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
 724     Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curve->get_pathvector() );
 725
 726     Path *orig = new Path;
 727     orig->LoadPathVector(pathv);
 728
 729     Path *res = new Path;
 730     res->SetBackData(false);
 731
 732     if (i_style->stroke_dash.n_dash) {
 733         // For dashed strokes, use Stroke method, because Outline can't do dashes
 734         // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
 735
 736         orig->ConvertWithBackData(0.1);
 737
 738         orig->DashPolylineFromStyle(i_style, scale, 0);
 739
 740         Shape* theShape = new Shape;
 741         orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
 742                      0.5 * o_miter);
 743         orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 744
 745         Shape *theRes = new Shape;
 746
 747         theRes->ConvertToShape(theShape, fill_positive);
 748
 749         Path *originaux[1];
 750         originaux[0] = res;
 751         theRes->ConvertToForme(orig, 1, originaux);
 752
 753         res->Coalesce(5.0);
 754
 755         delete theShape;
 756         delete theRes;
 757     } else {
 758         orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 759
 760         orig->Coalesce(0.5 * o_width);
 761
 762         Shape *theShape = new Shape;
 763         Shape *theRes = new Shape;
 764
 765         res->ConvertWithBackData(1.0);
 766         res->Fill(theShape, 0);
 767         theRes->ConvertToShape(theShape, fill_positive);
 768
 769         Path *originaux[1];
 770         originaux[0] = res;
 771         theRes->ConvertToForme(orig, 1, originaux);
 772
 773         delete theShape;
 774         delete theRes;
 775     }
 776
 777     if (orig->descr_cmd.size() <= 1) {
 778         // ca a merd\8e, ou bien le resultat est vide
 779         delete res;
 780         delete orig;
 781         curve->unref();
 782         return ret_pathv;
 783     }
 784
 785
 786     if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
 787         ret_pathv = orig->MakePathVector();
 788
 789         if (SP_IS_SHAPE(item) && SP_SHAPE(item)->hasMarkers ()) {
 790             SPShape *shape = SP_SHAPE(item);
 791
 792             Geom::PathVector const & pathv = curve->get_pathvector();
 793
 794             // START marker
 795             for (int i = 0; i < 2; i++) {  // SP_MARKER_LOC and SP_MARKER_LOC_START
 796                 if ( SPObject *marker_obj = shape->marker[i] ) {
 797                     Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
 798                     item_outline_add_marker( marker_obj, m,
 799                                              Geom::Scale(i_style->stroke_width.computed),
 800                                              ret_pathv );
 801                 }
 802             }
 803             // MID marker
 804             for (int i = 0; i < 3; i += 2) {  // SP_MARKER_LOC and SP_MARKER_LOC_MID
 805                 SPObject *midmarker_obj = shape->marker[i];
 806                 if (!midmarker_obj) continue;
 807                 for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
 808                     // START position
 809                     if ( path_it != pathv.begin()
 810                          && ! ((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
 811                     {
 812                         Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
 813                         item_outline_add_marker( midmarker_obj, m,
 814                                                  Geom::Scale(i_style->stroke_width.computed),
 815                                                  ret_pathv );
 816                     }
 817                     // MID position
 818                    if (path_it->size_default() > 1) {
 819                         Geom::Path::const_iterator curve_it1 = path_it->begin();      // incoming curve
 820                         Geom::Path::const_iterator curve_it2 = ++(path_it->begin());  // outgoing curve
 821                         while (curve_it2 != path_it->end_default())
 822                         {
 823                             /* Put marker between curve_it1 and curve_it2.
 824                              * Loop to end_default (so including closing segment), because when a path is closed,
 825                              * there should be a midpoint marker between last segment and closing straight line segment
 826                              */
 827                             Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
 828                             item_outline_add_marker( midmarker_obj, m,
 829                                                      Geom::Scale(i_style->stroke_width.computed),
 830                                                      ret_pathv);
 831
 832                             ++curve_it1;
 833                             ++curve_it2;
 834                         }
 835                     }
 836                     // END position
 837                     if ( path_it != (pathv.end()-1) && !path_it->empty()) {
 838                         Geom::Curve const &lastcurve = path_it->back_default();
 839                         Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
 840                         item_outline_add_marker( midmarker_obj, m,
 841                                                  Geom::Scale(i_style->stroke_width.computed),
 842                                                  ret_pathv );
 843                     }
 844                 }
 845             }
 846             // END marker
 847             for (int i = 0; i < 4; i += 3) {  // SP_MARKER_LOC and SP_MARKER_LOC_END
 848                 if ( SPObject *marker_obj = shape->marker[i] ) {
 849                     /* Get reference to last curve in the path.
 850                      * For moveto-only path, this returns the "closing line segment". */
 851                     Geom::Path const &path_last = pathv.back();
 852                     unsigned int index = path_last.size_default();
 853                     if (index > 0) {
 854                         index--;
 855                     }
 856                     Geom::Curve const &lastcurve = path_last[index];
 857
 858                     Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
 859                     item_outline_add_marker( marker_obj, m,
 860                                              Geom::Scale(i_style->stroke_width.computed),
 861                                              ret_pathv );
 862                 }
 863             }
 864         }
 865
 866         curve->unref();
 867     }
 868
 869     delete res;
 870     delete orig;
 871
 872     return ret_pathv;
 873 }
 874
 875 void
 876 sp_selected_path_outline(SPDesktop *desktop)
 877 {
 878     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 879
 880     if (selection->isEmpty()) {
 881         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
 882         return;
 883     }
 884
 885     bool did = false;
 886
 887     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
 888          items != NULL;
 889          items = items->next) {
 890
 891         SPItem *item = (SPItem *) items->data;
 892
 893         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 894             continue;
 895
 896         SPCurve *curve = NULL;
 897         if (SP_IS_SHAPE(item)) {
 898             curve = SP_SHAPE(item)->getCurve();
 899             if (curve == NULL)
 900                 continue;
 901         }
 902         if (SP_IS_TEXT(item)) {
 903             curve = SP_TEXT(item)->getNormalizedBpath();
 904             if (curve == NULL)
 905                 continue;
 906         }
 907
 908         if (curve->get_pathvector().empty()) {
 909             continue;
 910         }
 911
 912         // pas de stroke pas de chocolat
 913         if (!SP_OBJECT_STYLE(item) || SP_OBJECT_STYLE(item)->stroke.noneSet) {
 914             curve->unref();
 915             continue;
 916         }
 917
 918         // remember old stroke style, to be set on fill
 919         SPStyle *i_style = SP_OBJECT_STYLE(item);
 920         SPCSSAttr *ncss;
 921         {
 922             ncss = sp_css_attr_from_style(i_style, SP_STYLE_FLAG_ALWAYS);
 923             gchar const *s_val = sp_repr_css_property(ncss, "stroke", NULL);
 924             gchar const *s_opac = sp_repr_css_property(ncss, "stroke-opacity", NULL);
 925
 926             sp_repr_css_set_property(ncss, "stroke", "none");
 927             sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
 928             sp_repr_css_set_property(ncss, "fill", s_val);
 929             if ( s_opac ) {
 930                 sp_repr_css_set_property(ncss, "fill-opacity", s_opac);
 931             } else {
 932                 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
 933             }
 934             sp_repr_css_unset_property(ncss, "marker-start");
 935             sp_repr_css_unset_property(ncss, "marker-mid");
 936             sp_repr_css_unset_property(ncss, "marker-end");
 937         }
 938
 939         Geom::Matrix const transform(item->transform);
 940         float const scale = transform.descrim();
 941         gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
 942         gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
 943
 944         float o_width, o_miter;
 945         JoinType o_join;
 946         ButtType o_butt;
 947
 948         {
 949             int jointype, captype;
 950
 951             jointype = i_style->stroke_linejoin.computed;
 952             captype = i_style->stroke_linecap.computed;
 953             o_width = i_style->stroke_width.computed;
 954
 955             switch (jointype) {
 956                 case SP_STROKE_LINEJOIN_MITER:
 957                     o_join = join_pointy;
 958                     break;
 959                 case SP_STROKE_LINEJOIN_ROUND:
 960                     o_join = join_round;
 961                     break;
 962                 default:
 963                     o_join = join_straight;
 964                     break;
 965             }
 966
 967             switch (captype) {
 968                 case SP_STROKE_LINECAP_SQUARE:
 969                     o_butt = butt_square;
 970                     break;
 971                 case SP_STROKE_LINECAP_ROUND:
 972                     o_butt = butt_round;
 973                     break;
 974                 default:
 975                     o_butt = butt_straight;
 976                     break;
 977             }
 978
 979             if (o_width < 0.1)
 980                 o_width = 0.1;
 981             o_miter = i_style->stroke_miterlimit.value * o_width;
 982         }
 983
 984         SPCurve *curvetemp = curve_for_item(item);
 985         if (curvetemp == NULL) {
 986             curve->unref();
 987             continue;
 988         }
 989         // Livarots outline of arcs is broken. So convert the path to linear and cubics only, for which the outline is created correctly.
 990         Geom::PathVector pathv = pathv_to_linear_and_cubic_beziers( curvetemp->get_pathvector() );
 991         curvetemp->unref();
 992
 993         Path *orig = new Path;
 994         orig->LoadPathVector(pathv);
 995
 996         Path *res = new Path;
 997         res->SetBackData(false);
 998
 999         if (i_style->stroke_dash.n_dash) {
1000             // For dashed strokes, use Stroke method, because Outline can't do dashes
1001             // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
1002
1003             orig->ConvertWithBackData(0.1);
1004
1005             orig->DashPolylineFromStyle(i_style, scale, 0);
1006
1007             Shape* theShape = new Shape;
1008             orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
1009                          0.5 * o_miter);
1010             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1011
1012             Shape *theRes = new Shape;
1013
1014             theRes->ConvertToShape(theShape, fill_positive);
1015
1016             Path *originaux[1];
1017             originaux[0] = res;
1018             theRes->ConvertToForme(orig, 1, originaux);
1019
1020             res->Coalesce(5.0);
1021
1022             delete theShape;
1023             delete theRes;
1024
1025         } else {
1026
1027             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
1028
1029             orig->Coalesce(0.5 * o_width);
1030
1031             Shape *theShape = new Shape;
1032             Shape *theRes = new Shape;
1033
1034             res->ConvertWithBackData(1.0);
1035             res->Fill(theShape, 0);
1036             theRes->ConvertToShape(theShape, fill_positive);
1037
1038             Path *originaux[1];
1039             originaux[0] = res;
1040             theRes->ConvertToForme(orig, 1, originaux);
1041
1042             delete theShape;
1043             delete theRes;
1044         }
1045
1046         if (orig->descr_cmd.size() <= 1) {
1047             // ca a merd\8e, ou bien le resultat est vide
1048             delete res;
1049             delete orig;
1050             continue;
1051         }
1052
1053         did = true;
1054
1055         // remember the position of the item
1056         gint pos = SP_OBJECT_REPR(item)->position();
1057         // remember parent
1058         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1059         // remember id
1060         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1061         // remember title
1062         gchar *title = item->title();
1063         // remember description
1064         gchar *desc = item->desc();
1065
1066         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1067
1068             SPDocument * doc = sp_desktop_document(desktop);
1069             Inkscape::XML::Document *xml_doc = doc->getReprDoc();
1070             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1071
1072             // restore old style, but set old stroke style on fill
1073             sp_repr_css_change(repr, ncss, "style");
1074
1075             sp_repr_css_attr_unref(ncss);
1076
1077             gchar *str = orig->svg_dump_path();
1078             repr->setAttribute("d", str);
1079             g_free(str);
1080
1081             if (mask)
1082                 repr->setAttribute("mask", mask);
1083             if (clip_path)
1084                 repr->setAttribute("clip-path", clip_path);
1085
1086             if (SP_IS_SHAPE(item) && SP_SHAPE(item)->hasMarkers ()) {
1087
1088                 Inkscape::XML::Document *xml_doc = doc->getReprDoc();
1089                 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
1090
1091                 // add the group to the parent
1092                 parent->appendChild(g_repr);
1093                 // move to the saved position
1094                 g_repr->setPosition(pos > 0 ? pos : 0);
1095
1096                 g_repr->appendChild(repr);
1097                 // restore title, description, id, transform
1098                 repr->setAttribute("id", id);
1099                 SPItem *newitem = (SPItem *) doc->getObjectByRepr(repr);
1100                 newitem->doWriteTransform(repr, transform);
1101                 if (title) {
1102                         newitem->setTitle(title);
1103                 }
1104                 if (desc) {
1105                         newitem->setDesc(desc);
1106                 }
1107
1108                 SPShape *shape = SP_SHAPE(item);
1109
1110                 Geom::PathVector const & pathv = curve->get_pathvector();
1111
1112                 // START marker
1113                 for (int i = 0; i < 2; i++) {  // SP_MARKER_LOC and SP_MARKER_LOC_START
1114                     if ( SPObject *marker_obj = shape->marker[i] ) {
1115                         Geom::Matrix const m (sp_shape_marker_get_transform_at_start(pathv.front().front()));
1116                         sp_selected_path_outline_add_marker( marker_obj, m,
1117                                                              Geom::Scale(i_style->stroke_width.computed), transform,
1118                                                              g_repr, xml_doc, doc );
1119                     }
1120                 }
1121                 // MID marker
1122                 for (int i = 0; i < 3; i += 2) {  // SP_MARKER_LOC and SP_MARKER_LOC_MID
1123                     SPObject *midmarker_obj = shape->marker[i];
1124                     if (!midmarker_obj) continue;
1125                     for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
1126                         // START position
1127                         if ( path_it != pathv.begin()
1128                              && ! ((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
1129                         {
1130                             Geom::Matrix const m (sp_shape_marker_get_transform_at_start(path_it->front()));
1131                             sp_selected_path_outline_add_marker( midmarker_obj, m,
1132                                                                  Geom::Scale(i_style->stroke_width.computed), transform,
1133                                                                  g_repr, xml_doc, doc );
1134                         }
1135                         // MID position
1136                        if (path_it->size_default() > 1) {
1137                             Geom::Path::const_iterator curve_it1 = path_it->begin();      // incoming curve
1138                             Geom::Path::const_iterator curve_it2 = ++(path_it->begin());  // outgoing curve
1139                             while (curve_it2 != path_it->end_default())
1140                             {
1141                                 /* Put marker between curve_it1 and curve_it2.
1142                                  * Loop to end_default (so including closing segment), because when a path is closed,
1143                                  * there should be a midpoint marker between last segment and closing straight line segment
1144                                  */
1145                                 Geom::Matrix const m (sp_shape_marker_get_transform(*curve_it1, *curve_it2));
1146                                 sp_selected_path_outline_add_marker(midmarker_obj, m,
1147                                                                     Geom::Scale(i_style->stroke_width.computed), transform,
1148                                                                     g_repr, xml_doc, doc);
1149
1150                                 ++curve_it1;
1151                                 ++curve_it2;
1152                             }
1153                         }
1154                         // END position
1155                         if ( path_it != (pathv.end()-1) && !path_it->empty()) {
1156                             Geom::Curve const &lastcurve = path_it->back_default();
1157                             Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1158                             sp_selected_path_outline_add_marker( midmarker_obj, m,
1159                                                                  Geom::Scale(i_style->stroke_width.computed), transform,
1160                                                                  g_repr, xml_doc, doc );
1161                         }
1162                     }
1163                 }
1164                 // END marker
1165                 for (int i = 0; i < 4; i += 3) {  // SP_MARKER_LOC and SP_MARKER_LOC_END
1166                     if ( SPObject *marker_obj = shape->marker[i] ) {
1167                         /* Get reference to last curve in the path.
1168                          * For moveto-only path, this returns the "closing line segment". */
1169                         Geom::Path const &path_last = pathv.back();
1170                         unsigned int index = path_last.size_default();
1171                         if (index > 0) {
1172                             index--;
1173                         }
1174                         Geom::Curve const &lastcurve = path_last[index];
1175
1176                         Geom::Matrix const m = sp_shape_marker_get_transform_at_end(lastcurve);
1177                         sp_selected_path_outline_add_marker( marker_obj, m,
1178                                                              Geom::Scale(i_style->stroke_width.computed), transform,
1179                                                              g_repr, xml_doc, doc );
1180                     }
1181                 }
1182
1183                 selection->add(g_repr);
1184
1185                 Inkscape::GC::release(g_repr);
1186
1187
1188             } else {
1189
1190                 // add the new repr to the parent
1191                 parent->appendChild(repr);
1192
1193                 // move to the saved position
1194                 repr->setPosition(pos > 0 ? pos : 0);
1195
1196                 // restore title, description, id, transform
1197                 repr->setAttribute("id", id);
1198
1199                 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1200                 newitem->doWriteTransform(repr, transform);
1201                 if (title) {
1202                         newitem->setTitle(title);
1203                 }
1204                 if (desc) {
1205                         newitem->setDesc(desc);
1206                 }
1207
1208                 selection->add(repr);
1209
1210             }
1211
1212             Inkscape::GC::release(repr);
1213
1214             curve->unref();
1215             selection->remove(item);
1216             SP_OBJECT(item)->deleteObject(false);
1217
1218         }
1219         if (title) g_free(title);
1220         if (desc) g_free(desc);
1221
1222         delete res;
1223         delete orig;
1224     }
1225
1226     if (did) {
1227         DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
1228                            _("Convert stroke to path"));
1229     } else {
1230         // TRANSLATORS: "to outline" means "to convert stroke to path"
1231         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
1232         return;
1233     }
1234 }
1235
1236
1237 void
1238 sp_selected_path_offset(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, true, prefOffset);
1244 }
1245 void
1246 sp_selected_path_inset(SPDesktop *desktop)
1247 {
1248     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1249     double prefOffset = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1250
1251     sp_selected_path_do_offset(desktop, false, prefOffset);
1252 }
1253
1254 void
1255 sp_selected_path_offset_screen(SPDesktop *desktop, double pixels)
1256 {
1257     sp_selected_path_do_offset(desktop, true,  pixels / desktop->current_zoom());
1258 }
1259
1260 void
1261 sp_selected_path_inset_screen(SPDesktop *desktop, double pixels)
1262 {
1263     sp_selected_path_do_offset(desktop, false,  pixels / desktop->current_zoom());
1264 }
1265
1266
1267 void sp_selected_path_create_offset_object_zero(SPDesktop *desktop)
1268 {
1269     sp_selected_path_create_offset_object(desktop, 0, false);
1270 }
1271
1272 void sp_selected_path_create_offset(SPDesktop *desktop)
1273 {
1274     sp_selected_path_create_offset_object(desktop, 1, false);
1275 }
1276 void sp_selected_path_create_inset(SPDesktop *desktop)
1277 {
1278     sp_selected_path_create_offset_object(desktop, -1, false);
1279 }
1280
1281 void sp_selected_path_create_updating_offset_object_zero(SPDesktop *desktop)
1282 {
1283     sp_selected_path_create_offset_object(desktop, 0, true);
1284 }
1285
1286 void sp_selected_path_create_updating_offset(SPDesktop *desktop)
1287 {
1288     sp_selected_path_create_offset_object(desktop, 1, true);
1289 }
1290 void sp_selected_path_create_updating_inset(SPDesktop *desktop)
1291 {
1292     sp_selected_path_create_offset_object(desktop, -1, true);
1293 }
1294
1295 void
1296 sp_selected_path_create_offset_object(SPDesktop *desktop, int expand, bool updating)
1297 {
1298     Inkscape::Selection *selection;
1299     Inkscape::XML::Node *repr;
1300     SPItem *item;
1301     SPCurve *curve;
1302     gchar *style, *str;
1303     float o_width, o_miter;
1304     JoinType o_join;
1305     ButtType o_butt;
1306
1307     curve = NULL;
1308
1309     selection = sp_desktop_selection(desktop);
1310
1311     item = selection->singleItem();
1312
1313     if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
1314         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
1315         return;
1316     }
1317     if (SP_IS_SHAPE(item))
1318     {
1319         curve = SP_SHAPE(item)->getCurve();
1320         if (curve == NULL)
1321             return;
1322     }
1323     if (SP_IS_TEXT(item))
1324     {
1325         curve = SP_TEXT(item)->getNormalizedBpath();
1326         if (curve == NULL)
1327             return;
1328     }
1329
1330     Geom::Matrix const transform(item->transform);
1331
1332     item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1333
1334         //XML Tree being used directly here while it shouldn't be...
1335     style = g_strdup(SP_OBJECT(item)->getRepr()->attribute("style"));
1336
1337     // remember the position of the item
1338     gint pos = SP_OBJECT_REPR(item)->position();
1339     // remember parent
1340     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1341
1342     {
1343         SPStyle *i_style = SP_OBJECT(item)->style;
1344         int jointype, captype;
1345
1346         jointype = i_style->stroke_linejoin.value;
1347         captype = i_style->stroke_linecap.value;
1348         o_width = i_style->stroke_width.computed;
1349         if (jointype == SP_STROKE_LINEJOIN_MITER)
1350         {
1351             o_join = join_pointy;
1352         }
1353         else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1354         {
1355             o_join = join_round;
1356         }
1357         else
1358         {
1359             o_join = join_straight;
1360         }
1361         if (captype == SP_STROKE_LINECAP_SQUARE)
1362         {
1363             o_butt = butt_square;
1364         }
1365         else if (captype == SP_STROKE_LINECAP_ROUND)
1366         {
1367             o_butt = butt_round;
1368         }
1369         else
1370         {
1371             o_butt = butt_straight;
1372         }
1373
1374         {
1375             Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1376             o_width = prefs->getDouble("/options/defaultoffsetwidth/value", 1.0);
1377         }
1378
1379         if (o_width < 0.01)
1380             o_width = 0.01;
1381         o_miter = i_style->stroke_miterlimit.value * o_width;
1382     }
1383
1384     Path *orig = Path_for_item(item, true, false);
1385     if (orig == NULL)
1386     {
1387         g_free(style);
1388         curve->unref();
1389         return;
1390     }
1391
1392     Path *res = new Path;
1393     res->SetBackData(false);
1394
1395     {
1396         Shape *theShape = new Shape;
1397         Shape *theRes = new Shape;
1398
1399         orig->ConvertWithBackData(1.0);
1400         orig->Fill(theShape, 0);
1401
1402         SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1403         gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1404         if (val && strcmp(val, "nonzero") == 0)
1405         {
1406             theRes->ConvertToShape(theShape, fill_nonZero);
1407         }
1408         else if (val && strcmp(val, "evenodd") == 0)
1409         {
1410             theRes->ConvertToShape(theShape, fill_oddEven);
1411         }
1412         else
1413         {
1414             theRes->ConvertToShape(theShape, fill_nonZero);
1415         }
1416
1417         Path *originaux[1];
1418         originaux[0] = orig;
1419         theRes->ConvertToForme(res, 1, originaux);
1420
1421         delete theShape;
1422         delete theRes;
1423     }
1424
1425     curve->unref();
1426
1427     if (res->descr_cmd.size() <= 1)
1428     {
1429         // pas vraiment de points sur le resultat
1430         // donc il ne reste rien
1431         DocumentUndo::done(sp_desktop_document(desktop),
1432                            (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1433                             : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1434                            (updating ? _("Create linked offset")
1435                             : _("Create dynamic offset")));
1436         selection->clear();
1437
1438         delete res;
1439         delete orig;
1440         g_free(style);
1441         return;
1442     }
1443
1444     {
1445         gchar tstr[80];
1446
1447         tstr[79] = '\0';
1448
1449         Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
1450         repr = xml_doc->createElement("svg:path");
1451         repr->setAttribute("sodipodi:type", "inkscape:offset");
1452         sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1453                                                           ? o_width
1454                                                           : expand < 0
1455                                                           ? -o_width
1456                                                           : 0 ));
1457
1458         str = res->svg_dump_path();
1459         repr->setAttribute("inkscape:original", str);
1460         g_free(str);
1461
1462         if ( updating ) {
1463
1464                         //XML Tree being used directly here while it shouldn't be
1465             char const *id = SP_OBJECT(item)->getRepr()->attribute("id");
1466             char const *uri = g_strdup_printf("#%s", id);
1467             repr->setAttribute("xlink:href", uri);
1468             g_free((void *) uri);
1469         } else {
1470             repr->setAttribute("inkscape:href", NULL);
1471         }
1472
1473         repr->setAttribute("style", style);
1474
1475         // add the new repr to the parent
1476         parent->appendChild(repr);
1477
1478         // move to the saved position
1479         repr->setPosition(pos > 0 ? pos : 0);
1480
1481         SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1482
1483         if ( updating ) {
1484             // on conserve l'original
1485             // we reapply the transform to the original (offset will feel it)
1486             item->doWriteTransform(SP_OBJECT_REPR(item), transform);
1487         } else {
1488             // delete original, apply the transform to the offset
1489             SP_OBJECT(item)->deleteObject(false);
1490             nitem->doWriteTransform(repr, transform);
1491         }
1492
1493         // The object just created from a temporary repr is only a seed.
1494         // We need to invoke its write which will update its real repr (in particular adding d=)
1495         SP_OBJECT(nitem)->updateRepr();
1496
1497         Inkscape::GC::release(repr);
1498
1499         selection->set(nitem);
1500     }
1501
1502     DocumentUndo::done(sp_desktop_document(desktop),
1503                        (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1504                         : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1505                        (updating ? _("Create linked offset")
1506                         : _("Create dynamic offset")));
1507
1508     delete res;
1509     delete orig;
1510
1511     g_free(style);
1512 }
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525 void
1526 sp_selected_path_do_offset(SPDesktop *desktop, bool expand, double prefOffset)
1527 {
1528     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1529
1530     if (selection->isEmpty()) {
1531         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1532         return;
1533     }
1534
1535     bool did = false;
1536
1537     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1538          items != NULL;
1539          items = items->next) {
1540
1541         SPItem *item = (SPItem *) items->data;
1542
1543         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1544             continue;
1545
1546         SPCurve *curve = NULL;
1547         if (SP_IS_SHAPE(item)) {
1548             curve = SP_SHAPE(item)->getCurve();
1549             if (curve == NULL)
1550                 continue;
1551         }
1552         if (SP_IS_TEXT(item)) {
1553             curve = SP_TEXT(item)->getNormalizedBpath();
1554             if (curve == NULL)
1555                 continue;
1556         }
1557
1558         Geom::Matrix const transform(item->transform);
1559
1560         item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1561
1562         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1563
1564         float o_width, o_miter;
1565         JoinType o_join;
1566         ButtType o_butt;
1567
1568         {
1569             SPStyle *i_style = SP_OBJECT(item)->style;
1570             int jointype, captype;
1571
1572             jointype = i_style->stroke_linejoin.value;
1573             captype = i_style->stroke_linecap.value;
1574             o_width = i_style->stroke_width.computed;
1575
1576             switch (jointype) {
1577                 case SP_STROKE_LINEJOIN_MITER:
1578                     o_join = join_pointy;
1579                     break;
1580                 case SP_STROKE_LINEJOIN_ROUND:
1581                     o_join = join_round;
1582                     break;
1583                 default:
1584                     o_join = join_straight;
1585                     break;
1586             }
1587
1588             switch (captype) {
1589                 case SP_STROKE_LINECAP_SQUARE:
1590                     o_butt = butt_square;
1591                     break;
1592                 case SP_STROKE_LINECAP_ROUND:
1593                     o_butt = butt_round;
1594                     break;
1595                 default:
1596                     o_butt = butt_straight;
1597                     break;
1598             }
1599
1600             o_width = prefOffset;
1601
1602             if (o_width < 0.1)
1603                 o_width = 0.1;
1604             o_miter = i_style->stroke_miterlimit.value * o_width;
1605         }
1606
1607         Path *orig = Path_for_item(item, false);
1608         if (orig == NULL) {
1609             g_free(style);
1610             curve->unref();
1611             continue;
1612         }
1613
1614         Path *res = new Path;
1615         res->SetBackData(false);
1616
1617         {
1618             Shape *theShape = new Shape;
1619             Shape *theRes = new Shape;
1620
1621             orig->ConvertWithBackData(0.03);
1622             orig->Fill(theShape, 0);
1623
1624             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1625             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1626             if (val && strcmp(val, "nonzero") == 0)
1627             {
1628                 theRes->ConvertToShape(theShape, fill_nonZero);
1629             }
1630             else if (val && strcmp(val, "evenodd") == 0)
1631             {
1632                 theRes->ConvertToShape(theShape, fill_oddEven);
1633             }
1634             else
1635             {
1636                 theRes->ConvertToShape(theShape, fill_nonZero);
1637             }
1638
1639             // et maintenant: offset
1640             // methode inexacte
1641 /*                      Path *originaux[1];
1642                         originaux[0] = orig;
1643                         theRes->ConvertToForme(res, 1, originaux);
1644
1645                         if (expand) {
1646                         res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1647                         } else {
1648                         res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1649                         }
1650
1651                         orig->ConvertWithBackData(1.0);
1652                         orig->Fill(theShape, 0);
1653                         theRes->ConvertToShape(theShape, fill_positive);
1654                         originaux[0] = orig;
1655                         theRes->ConvertToForme(res, 1, originaux);
1656
1657                         if (o_width >= 0.5) {
1658                         //     res->Coalesce(1.0);
1659                         res->ConvertEvenLines(1.0);
1660                         res->Simplify(1.0);
1661                         } else {
1662                         //      res->Coalesce(o_width);
1663                         res->ConvertEvenLines(1.0*o_width);
1664                         res->Simplify(1.0 * o_width);
1665                         }    */
1666             // methode par makeoffset
1667
1668             if (expand)
1669             {
1670                 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1671             }
1672             else
1673             {
1674                 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1675             }
1676             theRes->ConvertToShape(theShape, fill_positive);
1677
1678             res->Reset();
1679             theRes->ConvertToForme(res);
1680
1681             if (o_width >= 1.0)
1682             {
1683                 res->ConvertEvenLines(1.0);
1684                 res->Simplify(1.0);
1685             }
1686             else
1687             {
1688                 res->ConvertEvenLines(1.0*o_width);
1689                 res->Simplify(1.0 * o_width);
1690             }
1691
1692             delete theShape;
1693             delete theRes;
1694         }
1695
1696         did = true;
1697
1698         curve->unref();
1699         // remember the position of the item
1700         gint pos = SP_OBJECT_REPR(item)->position();
1701         // remember parent
1702         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1703         // remember id
1704         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1705
1706         selection->remove(item);
1707         SP_OBJECT(item)->deleteObject(false);
1708
1709         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1710
1711             gchar tstr[80];
1712
1713             tstr[79] = '\0';
1714
1715             Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
1716             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1717
1718             repr->setAttribute("style", style);
1719
1720             gchar *str = res->svg_dump_path();
1721             repr->setAttribute("d", str);
1722             g_free(str);
1723
1724             // add the new repr to the parent
1725             parent->appendChild(repr);
1726
1727             // move to the saved position
1728             repr->setPosition(pos > 0 ? pos : 0);
1729
1730             SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1731
1732             // reapply the transform
1733             newitem->doWriteTransform(repr, transform);
1734
1735             repr->setAttribute("id", id);
1736
1737             selection->add(repr);
1738
1739             Inkscape::GC::release(repr);
1740         }
1741
1742         delete orig;
1743         delete res;
1744     }
1745
1746     if (did) {
1747         DocumentUndo::done(sp_desktop_document(desktop),
1748                            (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1749                            (expand ? _("Outset path") : _("Inset path")));
1750     } else {
1751         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1752         return;
1753     }
1754 }
1755
1756
1757 static bool
1758 sp_selected_path_simplify_items(SPDesktop *desktop,
1759                                 Inkscape::Selection *selection, GSList *items,
1760                                 float threshold,  bool justCoalesce,
1761                                 float angleLimit, bool breakableAngles,
1762                                 bool modifySelection);
1763
1764
1765 //return true if we changed something, else false
1766 bool
1767 sp_selected_path_simplify_item(SPDesktop *desktop,
1768                  Inkscape::Selection *selection, SPItem *item,
1769                  float threshold,  bool justCoalesce,
1770                  float angleLimit, bool breakableAngles,
1771                  gdouble size,     bool modifySelection)
1772 {
1773     if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1774         return false;
1775
1776     //If this is a group, do the children instead
1777     if (SP_IS_GROUP(item)) {
1778         GSList *items = sp_item_group_item_list(SP_GROUP(item));
1779
1780         return sp_selected_path_simplify_items(desktop, selection, items,
1781                                                threshold, justCoalesce,
1782                                                angleLimit, breakableAngles,
1783                                                false);
1784     }
1785
1786
1787     SPCurve *curve = NULL;
1788
1789     if (SP_IS_SHAPE(item)) {
1790         curve = SP_SHAPE(item)->getCurve();
1791         if (!curve)
1792             return false;
1793     }
1794
1795     if (SP_IS_TEXT(item)) {
1796         curve = SP_TEXT(item)->getNormalizedBpath();
1797         if (!curve)
1798             return false;
1799     }
1800
1801     // correct virtual size by full transform (bug #166937)
1802     size /= item->i2doc_affine().descrim();
1803
1804     // save the transform, to re-apply it after simplification
1805     Geom::Matrix const transform(item->transform);
1806
1807     /*
1808        reset the transform, effectively transforming the item by transform.inverse();
1809        this is necessary so that the item is transformed twice back and forth,
1810        allowing all compensations to cancel out regardless of the preferences
1811     */
1812     item->doWriteTransform(SP_OBJECT_REPR(item), Geom::identity());
1813
1814     gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1815     gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1816     gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1817
1818     Path *orig = Path_for_item(item, false);
1819     if (orig == NULL) {
1820         g_free(style);
1821         curve->unref();
1822         return false;
1823     }
1824
1825     curve->unref();
1826     // remember the position of the item
1827     gint pos = SP_OBJECT_REPR(item)->position();
1828     // remember parent
1829     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1830     // remember id
1831     char const *id = SP_OBJECT_REPR(item)->attribute("id");
1832     // remember path effect
1833     char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1834     // remember title
1835     gchar *title = item->title();
1836     // remember description
1837     gchar *desc = item->desc();
1838
1839     //If a group was selected, to not change the selection list
1840     if (modifySelection)
1841         selection->remove(item);
1842
1843     SP_OBJECT(item)->deleteObject(false);
1844
1845     if ( justCoalesce ) {
1846         orig->Coalesce(threshold * size);
1847     } else {
1848         orig->ConvertEvenLines(threshold * size);
1849         orig->Simplify(threshold * size);
1850     }
1851
1852     Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
1853     Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1854
1855     // restore style, mask and clip-path
1856     repr->setAttribute("style", style);
1857     g_free(style);
1858
1859     if ( mask ) {
1860         repr->setAttribute("mask", mask);
1861         g_free(mask);
1862     }
1863
1864     if ( clip_path ) {
1865         repr->setAttribute("clip-path", clip_path);
1866         g_free(clip_path);
1867     }
1868
1869     // restore path effect
1870     repr->setAttribute("inkscape:path-effect", patheffect);
1871
1872     // path
1873     gchar *str = orig->svg_dump_path();
1874     if (patheffect)
1875         repr->setAttribute("inkscape:original-d", str);
1876     else
1877         repr->setAttribute("d", str);
1878     g_free(str);
1879
1880     // restore id
1881     repr->setAttribute("id", id);
1882
1883     // add the new repr to the parent
1884     parent->appendChild(repr);
1885
1886     // move to the saved position
1887     repr->setPosition(pos > 0 ? pos : 0);
1888
1889     SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1890
1891     // reapply the transform
1892     newitem->doWriteTransform(repr, transform);
1893
1894     // restore title & description
1895     if (title) {
1896         newitem->setTitle(title);
1897         g_free(title);
1898     }
1899     if (desc) {
1900         newitem->setDesc(desc);
1901         g_free(desc);
1902     }
1903
1904     //If we are not in a selected group
1905     if (modifySelection)
1906         selection->add(repr);
1907
1908     Inkscape::GC::release(repr);
1909
1910     // clean up
1911     if (orig) delete orig;
1912
1913     return true;
1914 }
1915
1916
1917 bool
1918 sp_selected_path_simplify_items(SPDesktop *desktop,
1919                                 Inkscape::Selection *selection, GSList *items,
1920                                 float threshold,  bool justCoalesce,
1921                                 float angleLimit, bool breakableAngles,
1922                                 bool modifySelection)
1923 {
1924     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1925     bool simplifyIndividualPaths = prefs->getBool("/options/simplifyindividualpaths/value");
1926
1927     gchar *simplificationType;
1928     if (simplifyIndividualPaths) {
1929         simplificationType = _("Simplifying paths (separately):");
1930     } else {
1931         simplificationType = _("Simplifying paths:");
1932     }
1933
1934     bool didSomething = false;
1935
1936     Geom::OptRect selectionBbox = selection->bounds();
1937     if (!selectionBbox) {
1938         return false;
1939     }
1940     gdouble selectionSize  = L2(selectionBbox->dimensions());
1941
1942     gdouble simplifySize  = selectionSize;
1943
1944     int pathsSimplified = 0;
1945     int totalPathCount  = g_slist_length(items);
1946
1947     // set "busy" cursor
1948     desktop->setWaitingCursor();
1949
1950     for (; items != NULL; items = items->next) {
1951         SPItem *item = (SPItem *) items->data;
1952
1953         if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1954           continue;
1955
1956         if (simplifyIndividualPaths) {
1957             Geom::OptRect itemBbox = item->getBounds(item->i2d_affine());
1958             if (itemBbox) {
1959                 simplifySize      = L2(itemBbox->dimensions());
1960             } else {
1961                 simplifySize      = 0;
1962             }
1963         }
1964
1965         pathsSimplified++;
1966
1967         if (pathsSimplified % 20 == 0) {
1968             gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."),
1969                 simplificationType, pathsSimplified, totalPathCount);
1970             desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1971         }
1972
1973         didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1974             threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1975     }
1976
1977     desktop->clearWaitingCursor();
1978
1979     if (pathsSimplified > 20) {
1980         desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1981     }
1982
1983     return didSomething;
1984 }
1985
1986 void
1987 sp_selected_path_simplify_selection(SPDesktop *desktop, float threshold, bool justCoalesce,
1988                                     float angleLimit, bool breakableAngles)
1989 {
1990     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1991
1992     if (selection->isEmpty()) {
1993         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1994                          _("Select <b>path(s)</b> to simplify."));
1995         return;
1996     }
1997
1998     GSList *items = g_slist_copy((GSList *) selection->itemList());
1999
2000     bool didSomething = sp_selected_path_simplify_items(desktop, selection,
2001                                                         items, threshold,
2002                                                         justCoalesce,
2003                                                         angleLimit,
2004                                                         breakableAngles, true);
2005
2006     if (didSomething)
2007         DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
2008                            _("Simplify"));
2009     else
2010         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
2011
2012 }
2013
2014
2015 // globals for keeping track of accelerated simplify
2016 static double previousTime      = 0.0;
2017 static gdouble simplifyMultiply = 1.0;
2018
2019 void
2020 sp_selected_path_simplify(SPDesktop *desktop)
2021 {
2022     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
2023     gdouble simplifyThreshold =
2024         prefs->getDouble("/options/simplifythreshold/value", 0.003);
2025     bool simplifyJustCoalesce = prefs->getBool("/options/simplifyjustcoalesce/value", 0);
2026
2027     //Get the current time
2028     GTimeVal currentTimeVal;
2029     g_get_current_time(&currentTimeVal);
2030     double currentTime = currentTimeVal.tv_sec * 1000000 +
2031                 currentTimeVal.tv_usec;
2032
2033     //Was the previous call to this function recent? (<0.5 sec)
2034     if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
2035
2036         // add to the threshold 1/2 of its original value
2037         simplifyMultiply  += 0.5;
2038         simplifyThreshold *= simplifyMultiply;
2039
2040     } else {
2041         // reset to the default
2042         simplifyMultiply = 1;
2043     }
2044
2045     //remember time for next call
2046     previousTime = currentTime;
2047
2048     //g_print("%g\n", simplify_threshold);
2049
2050     //Make the actual call
2051     sp_selected_path_simplify_selection(desktop, simplifyThreshold,
2052                                         simplifyJustCoalesce, 0.0, false);
2053 }
2054
2055
2056
2057 // fonctions utilitaires
2058
2059 bool
2060 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
2061 {
2062     if (who == NULL || a == NULL)
2063         return false;
2064     if (who == a)
2065         return true;
2066     return Ancetre(sp_repr_parent(a), who);
2067 }
2068
2069 Path *
2070 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
2071 {
2072     SPCurve *curve = curve_for_item(item);
2073
2074     if (curve == NULL)
2075         return NULL;
2076
2077     Geom::PathVector *pathv = pathvector_for_curve(item, curve, doTransformation, transformFull, Geom::identity(), Geom::identity());
2078     curve->unref();
2079
2080     Path *dest = new Path;
2081     dest->LoadPathVector(*pathv);
2082     delete pathv;
2083
2084     return dest;
2085 }
2086
2087 /*
2088  * NOTE: Returns empty pathvector if curve == NULL
2089  * TODO: see if calling this method can be optimized. All the pathvector copying might be slow.
2090  */
2091 Geom::PathVector*
2092 pathvector_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull, Geom::Matrix extraPreAffine, Geom::Matrix extraPostAffine)
2093 {
2094     if (curve == NULL)
2095         return NULL;
2096
2097     Geom::PathVector *dest = new Geom::PathVector;
2098     *dest = curve->get_pathvector(); // Make a copy; must be freed by the caller!
2099
2100     if (doTransformation) {
2101         if (transformFull) {
2102             *dest *= extraPreAffine * item->i2doc_affine() * extraPostAffine;
2103         } else {
2104             *dest *= extraPreAffine * (Geom::Matrix)item->transform * extraPostAffine;
2105         }
2106     } else {
2107         *dest *= extraPreAffine * extraPostAffine;
2108     }
2109
2110     return dest;
2111 }
2112
2113 SPCurve* curve_for_item(SPItem *item)
2114 {
2115     if (!item)
2116         return NULL;
2117
2118     SPCurve *curve = NULL;
2119     if (SP_IS_SHAPE(item)) {
2120         if (SP_IS_PATH(item)) {
2121             curve = sp_path_get_curve_for_edit(SP_PATH(item));
2122         } else {
2123             curve = SP_SHAPE(item)->getCurve();
2124         }
2125     }
2126     else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
2127     {
2128         curve = te_get_layout(item)->convertToCurves();
2129     }
2130     else if (SP_IS_IMAGE(item))
2131     {
2132     curve = sp_image_get_curve(SP_IMAGE(item));
2133     }
2134
2135     return curve; // do not forget to unref the curve at some point!
2136 }
2137
2138 boost::optional<Path::cut_position> get_nearest_position_on_Path(Path *path, Geom::Point p, unsigned seg)
2139 {
2140     //get nearest position on path
2141     Path::cut_position pos = path->PointToCurvilignPosition(p, seg);
2142     return pos;
2143 }
2144
2145 Geom::Point get_point_on_Path(Path *path, int piece, double t)
2146 {
2147     Geom::Point p;
2148     path->PointAt(piece, t, p);
2149     return p;
2150 }
2151
2152
2153 /*
2154   Local Variables:
2155   mode:c++
2156   c-file-style:"stroustrup"
2157   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
2158   indent-tabs-mode:nil
2159   fill-column:99
2160   End:
2161 */
2162 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :