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 "inkscape.h"
  37 #include "document.h"
  38 #include "message-stack.h"
  39 #include "selection.h"
  40 #include "desktop-handles.h"
  41 #include "desktop.h"
  42 #include "display/canvas-bpath.h"
  43 #include "display/curve.h"
  44 #include <glibmm/i18n.h>
  45 #include "prefs-utils.h"
  46
  47 #include "libnr/n-art-bpath.h"
  48 #include "libnr/nr-path.h"
  49 #include "xml/repr.h"
  50 #include "xml/repr-sorting.h"
  51
  52 #include <libnr/nr-matrix-fns.h>
  53 #include <libnr/nr-matrix-ops.h>
  54 #include <libnr/nr-matrix-translate-ops.h>
  55 #include <libnr/nr-scale-matrix-ops.h>
  56
  57 #include "livarot/Path.h"
  58 #include "livarot/Shape.h"
  59
  60 #include "splivarot.h"
  61
  62 bool   Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
  63
  64 void sp_selected_path_boolop(bool_op bop, const unsigned int verb=SP_VERB_NONE, const Glib::ustring description="");
  65 void sp_selected_path_do_offset(bool expand, double prefOffset);
  66 void sp_selected_path_create_offset_object(int expand, bool updating);
  67
  68 void
  69 sp_selected_path_union()
  70 {
  71     sp_selected_path_boolop(bool_op_union, SP_VERB_SELECTION_UNION, _("Union"));
  72 }
  73
  74 void
  75 sp_selected_path_union_skip_undo()
  76 {
  77     sp_selected_path_boolop(bool_op_union, SP_VERB_NONE, _("Union"));
  78 }
  79
  80 void
  81 sp_selected_path_intersect()
  82 {
  83     sp_selected_path_boolop(bool_op_inters, SP_VERB_SELECTION_INTERSECT, _("Intersection"));
  84 }
  85
  86 void
  87 sp_selected_path_diff()
  88 {
  89     sp_selected_path_boolop(bool_op_diff, SP_VERB_SELECTION_DIFF, _("Difference"));
  90 }
  91
  92 void
  93 sp_selected_path_diff_skip_undo()
  94 {
  95     sp_selected_path_boolop(bool_op_diff, SP_VERB_NONE, _("Difference"));
  96 }
  97
  98 void
  99 sp_selected_path_symdiff()
 100 {
 101     sp_selected_path_boolop(bool_op_symdiff, SP_VERB_SELECTION_SYMDIFF, _("Exclusion"));
 102 }
 103 void
 104 sp_selected_path_cut()
 105 {
 106     sp_selected_path_boolop(bool_op_cut, SP_VERB_SELECTION_CUT, _("Division"));
 107 }
 108 void
 109 sp_selected_path_slice()
 110 {
 111     sp_selected_path_boolop(bool_op_slice, SP_VERB_SELECTION_SLICE,  _("Cut path"));
 112 }
 113
 114
 115 // boolean operations
 116 // take the source paths from the file, do the operation, delete the originals and add the results
 117 void
 118 sp_selected_path_boolop(bool_op bop, const unsigned int verb, const Glib::ustring description)
 119 {
 120     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 121
 122     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 123
 124     GSList *il = (GSList *) selection->itemList();
 125
 126     // allow union on a single object for the purpose of removing self overlapse (svn log, revision 13334)
 127     if ( (g_slist_length(il) < 2) && (bop != bool_op_union)) {
 128         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
 129         return;
 130     }
 131     else if ( g_slist_length(il) < 1 ) {
 132         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 1 path</b> to perform a boolean union."));
 133         return;
 134     }
 135
 136     if (g_slist_length(il) > 2) {
 137         if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
 138             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
 139             return;
 140         }
 141     }
 142
 143     // reverseOrderForOp marks whether the order of the list is the top->down order
 144     // it's only used when there are 2 objects, and for operations who need to know the
 145     // topmost object (differences, cuts)
 146     bool reverseOrderForOp = false;
 147
 148     // mettre les elements de la liste dans l'ordre pour ces operations
 149     if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
 150         // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
 151         Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
 152         Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
 153
 154         if (a == NULL || b == NULL) {
 155             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."));
 156             return;
 157         }
 158
 159         if (Ancetre(a, b)) {
 160             // a is the parent of b, already in the proper order
 161         } else if (Ancetre(b, a)) {
 162             // reverse order
 163             reverseOrderForOp = true;
 164         } else {
 165
 166             // objects are not in parent/child relationship;
 167             // find their lowest common ancestor
 168             Inkscape::XML::Node *dad = LCA(a, b);
 169             if (dad == NULL) {
 170                 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."));
 171                 return;
 172             }
 173
 174             // find the children of the LCA that lead from it to the a and b
 175             Inkscape::XML::Node *as = AncetreFils(a, dad);
 176             Inkscape::XML::Node *bs = AncetreFils(b, dad);
 177
 178             // find out which comes first
 179             for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
 180                 if (child == as) {
 181                     /* a first, so reverse. */
 182                     reverseOrderForOp = true;
 183                     break;
 184                 }
 185                 if (child == bs)
 186                     break;
 187             }
 188         }
 189     }
 190
 191     il = g_slist_copy(il);
 192
 193     // first check if all the input objects have shapes
 194     // otherwise bail out
 195     for (GSList *l = il; l != NULL; l = l->next)
 196     {
 197         SPItem *item = SP_ITEM(l->data);
 198         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item) && !SP_IS_FLOWTEXT(item))
 199         {
 200             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
 201             g_slist_free(il);
 202             return;
 203         }
 204     }
 205
 206     // extract the livarot Paths from the source objects
 207     // also get the winding rule specified in the style
 208     int nbOriginaux = g_slist_length(il);
 209     std::vector<Path *> originaux(nbOriginaux);
 210     std::vector<FillRule> origWind(nbOriginaux);
 211     int curOrig;
 212     {
 213         curOrig = 0;
 214         for (GSList *l = il; l != NULL; l = l->next)
 215         {
 216             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
 217             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
 218             if (val && strcmp(val, "nonzero") == 0) {
 219                 origWind[curOrig]= fill_nonZero;
 220             } else if (val && strcmp(val, "evenodd") == 0) {
 221                 origWind[curOrig]= fill_oddEven;
 222             } else {
 223                 origWind[curOrig]= fill_nonZero;
 224             }
 225
 226             originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
 227             if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
 228             {
 229                 for (int i = curOrig; i >= 0; i--) delete originaux[i];
 230                 g_slist_free(il);
 231                 return;
 232             }
 233             curOrig++;
 234         }
 235     }
 236     // reverse if needed
 237     // note that the selection list keeps its order
 238     if ( reverseOrderForOp ) {
 239         Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 240         FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
 241     }
 242
 243     // and work
 244     // some temporary instances, first
 245     Shape *theShapeA = new Shape;
 246     Shape *theShapeB = new Shape;
 247     Shape *theShape = new Shape;
 248     Path *res = new Path;
 249     res->SetBackData(false);
 250     Path::cut_position  *toCut=NULL;
 251     int                  nbToCut=0;
 252
 253     if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
 254         // true boolean op
 255         // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
 256         originaux[0]->ConvertWithBackData(0.1);
 257
 258         originaux[0]->Fill(theShape, 0);
 259
 260         theShapeA->ConvertToShape(theShape, origWind[0]);
 261
 262         curOrig = 1;
 263         for (GSList *l = il->next; l != NULL; l = l->next) {
 264             originaux[curOrig]->ConvertWithBackData(0.1);
 265
 266             originaux[curOrig]->Fill(theShape, curOrig);
 267
 268             theShapeB->ConvertToShape(theShape, origWind[curOrig]);
 269
 270             // les elements arrivent en ordre inverse dans la liste
 271             theShape->Booleen(theShapeB, theShapeA, bop);
 272
 273             {
 274                 Shape *swap = theShape;
 275                 theShape = theShapeA;
 276                 theShapeA = swap;
 277             }
 278             curOrig++;
 279         }
 280
 281         {
 282             Shape *swap = theShape;
 283             theShape = theShapeA;
 284             theShapeA = swap;
 285         }
 286
 287     } else if ( bop == bool_op_cut ) {
 288         // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
 289         // technically, the cut path is not necessarily a polygon (thus has no winding rule)
 290         // it is just uncrossed, and cleaned from duplicate edges and points
 291         // then it's fed to Booleen() which will uncross it against the other path
 292         // then comes the trick: each edge of the cut path is duplicated (one in each direction),
 293         // thus making a polygon. the weight of the edges of the cut are all 0, but
 294         // the Booleen need to invert the ones inside the source polygon (for the subsequent
 295         // ConvertToForme)
 296
 297         // the cut path needs to have the highest pathID in the back data
 298         // that's how the Booleen() function knows it's an edge of the cut
 299
 300         // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
 301         // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
 302         // left it at 1.0. Investigate replacing this by a combination of difference and
 303         // intersection of the same two paths. -- bb
 304         {
 305             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 306             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 307         }
 308         originaux[0]->ConvertWithBackData(1.0);
 309
 310         originaux[0]->Fill(theShape, 0);
 311
 312         theShapeA->ConvertToShape(theShape, origWind[0]);
 313
 314         originaux[1]->ConvertWithBackData(1.0);
 315
 316         originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
 317
 318         theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
 319
 320         // les elements arrivent en ordre inverse dans la liste
 321         theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
 322
 323     } else if ( bop == bool_op_slice ) {
 324         // slice is not really a boolean operation
 325         // you just put the 2 shapes in a single polygon, uncross it
 326         // the points where the degree is > 2 are intersections
 327         // just check it's an intersection on the path you want to cut, and keep it
 328         // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
 329         // make new subpath at each one of these positions
 330         // inversion pour l'op\8eration
 331         {
 332             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 333             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 334         }
 335         originaux[0]->ConvertWithBackData(1.0);
 336
 337         originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
 338
 339         originaux[1]->ConvertWithBackData(1.0);
 340
 341         originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
 342
 343         theShape->ConvertToShape(theShapeA, fill_justDont);
 344
 345         if ( theShape->hasBackData() ) {
 346             // should always be the case, but ya never know
 347             {
 348                 for (int i = 0; i < theShape->numberOfPoints(); i++) {
 349                     if ( theShape->getPoint(i).totalDegree() > 2 ) {
 350                         // possibly an intersection
 351                         // we need to check that at least one edge from the source path is incident to it
 352                         // before we declare it's an intersection
 353                         int cb = theShape->getPoint(i).incidentEdge[FIRST];
 354                         int   nbOrig=0;
 355                         int   nbOther=0;
 356                         int   piece=-1;
 357                         float t=0.0;
 358                         while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
 359                             if ( theShape->ebData[cb].pathID == 0 ) {
 360                                 // the source has an edge incident to the point, get its position on the path
 361                                 piece=theShape->ebData[cb].pieceID;
 362                                 if ( theShape->getEdge(cb).st == i ) {
 363                                     t=theShape->ebData[cb].tSt;
 364                                 } else {
 365                                     t=theShape->ebData[cb].tEn;
 366                                 }
 367                                 nbOrig++;
 368                             }
 369                             if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
 370                             cb=theShape->NextAt(i, cb);
 371                         }
 372                         if ( nbOrig > 0 && nbOther > 0 ) {
 373                             // point incident to both path and cut: an intersection
 374                             // note that you only keep one position on the source; you could have degenerate
 375                             // cases where the source crosses itself at this point, and you wouyld miss an intersection
 376                             toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
 377                             toCut[nbToCut].piece=piece;
 378                             toCut[nbToCut].t=t;
 379                             nbToCut++;
 380                         }
 381                     }
 382                 }
 383             }
 384             {
 385                 // i think it's useless now
 386                 int i = theShape->numberOfEdges() - 1;
 387                 for (;i>=0;i--) {
 388                     if ( theShape->ebData[i].pathID == 1 ) {
 389                         theShape->SubEdge(i);
 390                     }
 391                 }
 392             }
 393
 394         }
 395     }
 396
 397     int*    nesting=NULL;
 398     int*    conts=NULL;
 399     int     nbNest=0;
 400     // pour compenser le swap juste avant
 401     if ( bop == bool_op_slice ) {
 402 //    theShape->ConvertToForme(res, nbOriginaux, originaux, true);
 403 //    res->ConvertForcedToMoveTo();
 404         res->Copy(originaux[0]);
 405         res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
 406         free(toCut);
 407     } else if ( bop == bool_op_cut ) {
 408         // il faut appeler pour desallouer PointData (pas vital, mais bon)
 409         // the Booleen() function did not deallocated the point_data array in theShape, because this
 410         // function needs it.
 411         // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
 412         // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
 413         theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
 414     } else {
 415         theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
 416     }
 417
 418     delete theShape;
 419     delete theShapeA;
 420     delete theShapeB;
 421     for (int i = 0; i < nbOriginaux; i++)  delete originaux[i];
 422
 423     if (res->descr_cmd.size() <= 1)
 424     {
 425         // only one command, presumably a moveto: it isn't a path
 426         for (GSList *l = il; l != NULL; l = l->next)
 427         {
 428             SP_OBJECT(l->data)->deleteObject();
 429         }
 430         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 431                          description);
 432         selection->clear();
 433
 434         delete res;
 435         g_slist_free(il);
 436         return;
 437     }
 438
 439     // get the source path object
 440     SPObject *source;
 441     if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
 442         if (reverseOrderForOp) {
 443              source = SP_OBJECT(il->data);
 444         } else {
 445              source = SP_OBJECT(il->next->data);
 446         }
 447     } else {
 448         // find out the bottom object
 449         GSList *sorted = g_slist_copy((GSList *) selection->reprList());
 450
 451         sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
 452
 453         source = sp_desktop_document(desktop)->
 454             getObjectByRepr((Inkscape::XML::Node *)sorted->data);
 455
 456         g_slist_free(sorted);
 457     }
 458
 459     // adjust style properties that depend on a possible transform in the source object in order
 460     // to get a correct style attribute for the new path
 461     SPItem* item_source = SP_ITEM(source);
 462     NR::Matrix i2root = from_2geom(sp_item_i2root_affine(item_source));
 463     sp_item_adjust_stroke(item_source, NR::expansion(i2root));
 464     sp_item_adjust_pattern(item_source, i2root);
 465     sp_item_adjust_gradient(item_source, i2root);
 466     sp_item_adjust_livepatheffect(item_source, i2root);
 467
 468     Inkscape::XML::Node *repr_source = SP_OBJECT_REPR(source);
 469
 470     // remember important aspects of the source path, to be restored
 471     gint pos = repr_source->position();
 472     Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
 473     gchar const *id = repr_source->attribute("id");
 474     gchar const *style = repr_source->attribute("style");
 475     gchar const *mask = repr_source->attribute("mask");
 476     gchar const *clip_path = repr_source->attribute("clip-path");
 477
 478     // remove source paths
 479     selection->clear();
 480     for (GSList *l = il; l != NULL; l = l->next) {
 481         // if this is the bottommost object,
 482         if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
 483             // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
 484             SP_OBJECT(l->data)->deleteObject(false);
 485         } else {
 486             // delete the object for real, so that its clones can take appropriate action
 487             SP_OBJECT(l->data)->deleteObject();
 488         }
 489     }
 490     g_slist_free(il);
 491
 492     // premultiply by the inverse of parent's repr
 493     SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
 494     NR::Matrix local = from_2geom(sp_item_i2doc_affine(parent_item));
 495     gchar *transform = sp_svg_transform_write(local.inverse());
 496
 497     // now that we have the result, add it on the canvas
 498     if ( bop == bool_op_cut || bop == bool_op_slice ) {
 499         int    nbRP=0;
 500         Path** resPath;
 501         if ( bop == bool_op_slice ) {
 502             // there are moveto's at each intersection, but it's still one unique path
 503             // so break it down and add each subpath independently
 504             // we could call break_apart to do this, but while we have the description...
 505             resPath=res->SubPaths(nbRP, false);
 506         } else {
 507             // cut operation is a bit wicked: you need to keep holes
 508             // that's why you needed the nesting
 509             // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
 510             // to get the path for each part of the polygon. that's why you need the nesting info:
 511             // to know in wich subpath to add a subpath
 512             resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
 513
 514             // cleaning
 515             if ( conts ) free(conts);
 516             if ( nesting ) free(nesting);
 517         }
 518
 519         // add all the pieces resulting from cut or slice
 520         for (int i=0;i<nbRP;i++) {
 521             gchar *d = resPath[i]->svg_dump_path();
 522
 523             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 524             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
 525             repr->setAttribute("style", style);
 526             if (mask)
 527                 repr->setAttribute("mask", mask);
 528             if (clip_path)
 529                 repr->setAttribute("clip-path", clip_path);
 530
 531             repr->setAttribute("d", d);
 532             g_free(d);
 533
 534             // for slice, remove fill
 535             if (bop == bool_op_slice) {
 536                 SPCSSAttr *css;
 537
 538                 css = sp_repr_css_attr_new();
 539                 sp_repr_css_set_property(css, "fill", "none");
 540
 541                 sp_repr_css_change(repr, css, "style");
 542
 543                 sp_repr_css_attr_unref(css);
 544             }
 545
 546             // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
 547             // this means it's basically random which of the pieces inherits the original's id and clones
 548             // a better algorithm might figure out e.g. the biggest piece
 549             repr->setAttribute("id", id);
 550
 551             repr->setAttribute("transform", transform);
 552
 553             // add the new repr to the parent
 554             parent->appendChild(repr);
 555
 556             // move to the saved position
 557             repr->setPosition(pos > 0 ? pos : 0);
 558
 559             selection->add(repr);
 560             Inkscape::GC::release(repr);
 561
 562             delete resPath[i];
 563         }
 564         if ( resPath ) free(resPath);
 565
 566     } else {
 567         gchar *d = res->svg_dump_path();
 568
 569         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 570         Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
 571         repr->setAttribute("style", style);
 572
 573         if ( mask )
 574             repr->setAttribute("mask", mask);
 575
 576         if ( clip_path )
 577             repr->setAttribute("clip-path", clip_path);
 578
 579         repr->setAttribute("d", d);
 580         g_free(d);
 581
 582         repr->setAttribute("transform", transform);
 583
 584         repr->setAttribute("id", id);
 585         parent->appendChild(repr);
 586         repr->setPosition(pos > 0 ? pos : 0);
 587
 588         selection->add(repr);
 589         Inkscape::GC::release(repr);
 590     }
 591
 592     g_free(transform);
 593
 594     if (verb != SP_VERB_NONE) {
 595         sp_document_done(sp_desktop_document(desktop), verb, description);
 596     }
 597
 598     delete res;
 599 }
 600
 601
 602 void
 603 sp_selected_path_outline()
 604 {
 605     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 606
 607     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 608
 609     if (selection->isEmpty()) {
 610         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
 611         return;
 612     }
 613
 614     bool did = false;
 615
 616     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
 617          items != NULL;
 618          items = items->next) {
 619
 620         SPItem *item = (SPItem *) items->data;
 621
 622         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 623             continue;
 624
 625         SPCurve *curve = NULL;
 626         if (SP_IS_SHAPE(item)) {
 627             curve = sp_shape_get_curve(SP_SHAPE(item));
 628             if (curve == NULL)
 629                 continue;
 630         }
 631         if (SP_IS_TEXT(item)) {
 632             curve = SP_TEXT(item)->getNormalizedBpath();
 633             if (curve == NULL)
 634                 continue;
 635         }
 636
 637         {   // pas de stroke pas de chocolat
 638             SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
 639             gchar const *val = sp_repr_css_property(css, "stroke", NULL);
 640
 641             if (val == NULL || strcmp(val, "none") == 0) {
 642                 curve->unref();
 643                 continue;
 644             }
 645         }
 646
 647         // remember old stroke style, to be set on fill
 648         SPCSSAttr *ncss;
 649         {
 650             SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
 651             gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
 652             gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
 653
 654             ncss = sp_repr_css_attr_new();
 655
 656             sp_repr_css_set_property(ncss, "stroke", "none");
 657             sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
 658             sp_repr_css_set_property(ncss, "fill", val);
 659             if ( opac ) {
 660                 sp_repr_css_set_property(ncss, "fill-opacity", opac);
 661             } else {
 662                 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
 663             }
 664             sp_repr_css_unset_property(ncss, "marker-start");
 665             sp_repr_css_unset_property(ncss, "marker-mid");
 666             sp_repr_css_unset_property(ncss, "marker-end");
 667         }
 668
 669         NR::Matrix const transform(item->transform);
 670         float const scale = NR::expansion(transform);
 671         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
 672         SPStyle *i_style = SP_OBJECT(item)->style;
 673         gchar const *mask = SP_OBJECT_REPR(item)->attribute("mask");
 674         gchar const *clip_path = SP_OBJECT_REPR(item)->attribute("clip-path");
 675
 676         float o_width, o_miter;
 677         JoinType o_join;
 678         ButtType o_butt;
 679
 680         {
 681             int jointype, captype;
 682
 683             jointype = i_style->stroke_linejoin.computed;
 684             captype = i_style->stroke_linecap.computed;
 685             o_width = i_style->stroke_width.computed;
 686
 687             switch (jointype) {
 688                 case SP_STROKE_LINEJOIN_MITER:
 689                     o_join = join_pointy;
 690                     break;
 691                 case SP_STROKE_LINEJOIN_ROUND:
 692                     o_join = join_round;
 693                     break;
 694                 default:
 695                     o_join = join_straight;
 696                     break;
 697             }
 698
 699             switch (captype) {
 700                 case SP_STROKE_LINECAP_SQUARE:
 701                     o_butt = butt_square;
 702                     break;
 703                 case SP_STROKE_LINECAP_ROUND:
 704                     o_butt = butt_round;
 705                     break;
 706                 default:
 707                     o_butt = butt_straight;
 708                     break;
 709             }
 710
 711             if (o_width < 0.1)
 712                 o_width = 0.1;
 713             o_miter = i_style->stroke_miterlimit.value * o_width;
 714         }
 715
 716         Path *orig = Path_for_item(item, false);
 717         if (orig == NULL) {
 718             g_free(style);
 719             curve->unref();
 720             continue;
 721         }
 722
 723         Path *res = new Path;
 724         res->SetBackData(false);
 725
 726         if (i_style->stroke_dash.n_dash) {
 727             // For dashed strokes, use Stroke method, because Outline can't do dashes
 728             // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
 729
 730             orig->ConvertWithBackData(0.1);
 731
 732             orig->DashPolylineFromStyle(i_style, scale, 0);
 733
 734             Shape* theShape = new Shape;
 735             orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
 736                          0.5 * o_miter);
 737             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 738
 739             Shape *theRes = new Shape;
 740
 741             theRes->ConvertToShape(theShape, fill_positive);
 742
 743             Path *originaux[1];
 744             originaux[0] = res;
 745             theRes->ConvertToForme(orig, 1, originaux);
 746
 747             res->Coalesce(5.0);
 748
 749             delete theShape;
 750             delete theRes;
 751
 752         } else {
 753
 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             g_free(style);
 778             continue;
 779         }
 780
 781         did = true;
 782
 783         // remember the position of the item
 784         gint pos = SP_OBJECT_REPR(item)->position();
 785         // remember parent
 786         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
 787         // remember id
 788         char const *id = SP_OBJECT_REPR(item)->attribute("id");
 789
 790         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
 791
 792             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 793             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
 794
 795             // restore old style
 796             repr->setAttribute("style", style);
 797
 798             // set old stroke style on fill
 799             sp_repr_css_change(repr, ncss, "style");
 800
 801             sp_repr_css_attr_unref(ncss);
 802
 803             gchar *str = orig->svg_dump_path();
 804             repr->setAttribute("d", str);
 805             g_free(str);
 806
 807             if (mask)
 808                 repr->setAttribute("mask", mask);
 809             if (clip_path)
 810                 repr->setAttribute("clip-path", clip_path);
 811
 812             if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
 813
 814                 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 815                 Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
 816
 817                 // add the group to the parent
 818                 parent->appendChild(g_repr);
 819                 // move to the saved position
 820                 g_repr->setPosition(pos > 0 ? pos : 0);
 821
 822                 g_repr->appendChild(repr);
 823                 repr->setAttribute("id", id);
 824                 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
 825                 sp_item_write_transform(newitem, repr, transform);
 826
 827                 SPShape *shape = SP_SHAPE(item);
 828
 829                 for (NArtBpath const* bp = curve->get_bpath(); bp->code != NR_END; bp++) {
 830                     for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) {
 831                         if (sp_shape_marker_required (shape, m, bp)) {
 832
 833                             SPMarker* marker = SP_MARKER (shape->marker[m]);
 834                             SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m]));
 835
 836                             NR::Matrix tr(sp_shape_marker_get_transform(shape, bp));
 837
 838                             if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
 839                                 tr = NR::scale(i_style->stroke_width.computed) * tr;
 840                             }
 841
 842                             // total marker transform
 843                             tr = marker_item->transform * marker->c2p * tr * transform;
 844
 845                             if (SP_OBJECT_REPR(marker_item)) {
 846                                 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate(xml_doc);
 847                                 g_repr->appendChild(m_repr);
 848                                 SPItem *marker_item = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(m_repr);
 849                                 sp_item_write_transform(marker_item, m_repr, tr);
 850                             }
 851                         }
 852                     }
 853                 }
 854
 855
 856                 selection->add(g_repr);
 857
 858                 Inkscape::GC::release(g_repr);
 859
 860
 861             } else {
 862
 863                 // add the new repr to the parent
 864                 parent->appendChild(repr);
 865
 866                 // move to the saved position
 867                 repr->setPosition(pos > 0 ? pos : 0);
 868
 869                 repr->setAttribute("id", id);
 870
 871                 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
 872                 sp_item_write_transform(newitem, repr, transform);
 873
 874                 selection->add(repr);
 875
 876             }
 877
 878             Inkscape::GC::release(repr);
 879
 880             curve->unref();
 881             selection->remove(item);
 882             SP_OBJECT(item)->deleteObject(false);
 883
 884         }
 885
 886         delete res;
 887         delete orig;
 888         g_free(style);
 889
 890     }
 891
 892     if (did) {
 893         sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
 894                          _("Convert stroke to path"));
 895     } else {
 896         // TRANSLATORS: "to outline" means "to convert stroke to path"
 897         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
 898         return;
 899     }
 900 }
 901
 902
 903 void
 904 sp_selected_path_offset()
 905 {
 906     double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
 907
 908     sp_selected_path_do_offset(true, prefOffset);
 909 }
 910 void
 911 sp_selected_path_inset()
 912 {
 913     double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
 914
 915     sp_selected_path_do_offset(false, prefOffset);
 916 }
 917
 918 void
 919 sp_selected_path_offset_screen(double pixels)
 920 {
 921     sp_selected_path_do_offset(true,  pixels / SP_ACTIVE_DESKTOP->current_zoom());
 922 }
 923
 924 void
 925 sp_selected_path_inset_screen(double pixels)
 926 {
 927     sp_selected_path_do_offset(false,  pixels / SP_ACTIVE_DESKTOP->current_zoom());
 928 }
 929
 930
 931 void sp_selected_path_create_offset_object_zero()
 932 {
 933     sp_selected_path_create_offset_object(0, false);
 934 }
 935
 936 void sp_selected_path_create_offset()
 937 {
 938     sp_selected_path_create_offset_object(1, false);
 939 }
 940 void sp_selected_path_create_inset()
 941 {
 942     sp_selected_path_create_offset_object(-1, false);
 943 }
 944
 945 void sp_selected_path_create_updating_offset_object_zero()
 946 {
 947     sp_selected_path_create_offset_object(0, true);
 948 }
 949
 950 void sp_selected_path_create_updating_offset()
 951 {
 952     sp_selected_path_create_offset_object(1, true);
 953 }
 954 void sp_selected_path_create_updating_inset()
 955 {
 956     sp_selected_path_create_offset_object(-1, true);
 957 }
 958
 959 void
 960 sp_selected_path_create_offset_object(int expand, bool updating)
 961 {
 962     Inkscape::Selection *selection;
 963     Inkscape::XML::Node *repr;
 964     SPItem *item;
 965     SPCurve *curve;
 966     gchar *style, *str;
 967     SPDesktop *desktop;
 968     float o_width, o_miter;
 969     JoinType o_join;
 970     ButtType o_butt;
 971
 972     curve = NULL;
 973
 974     desktop = SP_ACTIVE_DESKTOP;
 975
 976     selection = sp_desktop_selection(desktop);
 977
 978     item = selection->singleItem();
 979
 980     if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
 981         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
 982         return;
 983     }
 984     if (SP_IS_SHAPE(item))
 985     {
 986         curve = sp_shape_get_curve(SP_SHAPE(item));
 987         if (curve == NULL)
 988             return;
 989     }
 990     if (SP_IS_TEXT(item))
 991     {
 992         curve = SP_TEXT(item)->getNormalizedBpath();
 993         if (curve == NULL)
 994             return;
 995     }
 996
 997     NR::Matrix const transform(item->transform);
 998
 999     sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1000
1001     style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
1002
1003     // remember the position of the item
1004     gint pos = SP_OBJECT_REPR(item)->position();
1005     // remember parent
1006     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1007
1008     {
1009         SPStyle *i_style = SP_OBJECT(item)->style;
1010         int jointype, captype;
1011
1012         jointype = i_style->stroke_linejoin.value;
1013         captype = i_style->stroke_linecap.value;
1014         o_width = i_style->stroke_width.computed;
1015         if (jointype == SP_STROKE_LINEJOIN_MITER)
1016         {
1017             o_join = join_pointy;
1018         }
1019         else if (jointype == SP_STROKE_LINEJOIN_ROUND)
1020         {
1021             o_join = join_round;
1022         }
1023         else
1024         {
1025             o_join = join_straight;
1026         }
1027         if (captype == SP_STROKE_LINECAP_SQUARE)
1028         {
1029             o_butt = butt_square;
1030         }
1031         else if (captype == SP_STROKE_LINECAP_ROUND)
1032         {
1033             o_butt = butt_round;
1034         }
1035         else
1036         {
1037             o_butt = butt_straight;
1038         }
1039
1040         {
1041             double prefOffset = 1.0;
1042             prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
1043             o_width = prefOffset;
1044         }
1045
1046         if (o_width < 0.01)
1047             o_width = 0.01;
1048         o_miter = i_style->stroke_miterlimit.value * o_width;
1049     }
1050
1051     Path *orig = Path_for_item(item, true, false);
1052     if (orig == NULL)
1053     {
1054         g_free(style);
1055         curve->unref();
1056         return;
1057     }
1058
1059     Path *res = new Path;
1060     res->SetBackData(false);
1061
1062     {
1063         Shape *theShape = new Shape;
1064         Shape *theRes = new Shape;
1065
1066         orig->ConvertWithBackData(1.0);
1067         orig->Fill(theShape, 0);
1068
1069         SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1070         gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1071         if (val && strcmp(val, "nonzero") == 0)
1072         {
1073             theRes->ConvertToShape(theShape, fill_nonZero);
1074         }
1075         else if (val && strcmp(val, "evenodd") == 0)
1076         {
1077             theRes->ConvertToShape(theShape, fill_oddEven);
1078         }
1079         else
1080         {
1081             theRes->ConvertToShape(theShape, fill_nonZero);
1082         }
1083
1084         Path *originaux[1];
1085         originaux[0] = orig;
1086         theRes->ConvertToForme(res, 1, originaux);
1087
1088         delete theShape;
1089         delete theRes;
1090     }
1091
1092     curve->unref();
1093
1094     if (res->descr_cmd.size() <= 1)
1095     {
1096         // pas vraiment de points sur le resultat
1097         // donc il ne reste rien
1098         sp_document_done(sp_desktop_document(desktop),
1099                          (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1100                           : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1101                          (updating ? _("Create linked offset")
1102                           : _("Create dynamic offset")));
1103         selection->clear();
1104
1105         delete res;
1106         delete orig;
1107         g_free(style);
1108         return;
1109     }
1110
1111     {
1112         gchar tstr[80];
1113
1114         tstr[79] = '\0';
1115
1116         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1117         repr = xml_doc->createElement("svg:path");
1118         repr->setAttribute("sodipodi:type", "inkscape:offset");
1119         sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1120                                                           ? o_width
1121                                                           : expand < 0
1122                                                           ? -o_width
1123                                                           : 0 ));
1124
1125         str = res->svg_dump_path();
1126         repr->setAttribute("inkscape:original", str);
1127         g_free(str);
1128
1129         if ( updating ) {
1130             char const *id = SP_OBJECT(item)->repr->attribute("id");
1131             char const *uri = g_strdup_printf("#%s", id);
1132             repr->setAttribute("xlink:href", uri);
1133             g_free((void *) uri);
1134         } else {
1135             repr->setAttribute("inkscape:href", NULL);
1136         }
1137
1138         repr->setAttribute("style", style);
1139
1140         // add the new repr to the parent
1141         parent->appendChild(repr);
1142
1143         // move to the saved position
1144         repr->setPosition(pos > 0 ? pos : 0);
1145
1146         SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1147
1148         if ( updating ) {
1149             // on conserve l'original
1150             // we reapply the transform to the original (offset will feel it)
1151             sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1152         } else {
1153             // delete original, apply the transform to the offset
1154             SP_OBJECT(item)->deleteObject(false);
1155             sp_item_write_transform(nitem, repr, transform);
1156         }
1157
1158         // The object just created from a temporary repr is only a seed.
1159         // We need to invoke its write which will update its real repr (in particular adding d=)
1160         SP_OBJECT(nitem)->updateRepr();
1161
1162         Inkscape::GC::release(repr);
1163
1164         selection->set(nitem);
1165     }
1166
1167     sp_document_done(sp_desktop_document(desktop),
1168                      (updating ? SP_VERB_SELECTION_LINKED_OFFSET
1169                       : SP_VERB_SELECTION_DYNAMIC_OFFSET),
1170                      (updating ? _("Create linked offset")
1171                       : _("Create dynamic offset")));
1172
1173     delete res;
1174     delete orig;
1175
1176     g_free(style);
1177 }
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190 void
1191 sp_selected_path_do_offset(bool expand, double prefOffset)
1192 {
1193     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1194
1195     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1196
1197     if (selection->isEmpty()) {
1198         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1199         return;
1200     }
1201
1202     bool did = false;
1203
1204     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1205          items != NULL;
1206          items = items->next) {
1207
1208         SPItem *item = (SPItem *) items->data;
1209
1210         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1211             continue;
1212
1213         SPCurve *curve = NULL;
1214         if (SP_IS_SHAPE(item)) {
1215             curve = sp_shape_get_curve(SP_SHAPE(item));
1216             if (curve == NULL)
1217                 continue;
1218         }
1219         if (SP_IS_TEXT(item)) {
1220             curve = SP_TEXT(item)->getNormalizedBpath();
1221             if (curve == NULL)
1222                 continue;
1223         }
1224
1225         NR::Matrix const transform(item->transform);
1226
1227         sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1228
1229         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1230
1231         float o_width, o_miter;
1232         JoinType o_join;
1233         ButtType o_butt;
1234
1235         {
1236             SPStyle *i_style = SP_OBJECT(item)->style;
1237             int jointype, captype;
1238
1239             jointype = i_style->stroke_linejoin.value;
1240             captype = i_style->stroke_linecap.value;
1241             o_width = i_style->stroke_width.computed;
1242
1243             switch (jointype) {
1244                 case SP_STROKE_LINEJOIN_MITER:
1245                     o_join = join_pointy;
1246                     break;
1247                 case SP_STROKE_LINEJOIN_ROUND:
1248                     o_join = join_round;
1249                     break;
1250                 default:
1251                     o_join = join_straight;
1252                     break;
1253             }
1254
1255             switch (captype) {
1256                 case SP_STROKE_LINECAP_SQUARE:
1257                     o_butt = butt_square;
1258                     break;
1259                 case SP_STROKE_LINECAP_ROUND:
1260                     o_butt = butt_round;
1261                     break;
1262                 default:
1263                     o_butt = butt_straight;
1264                     break;
1265             }
1266
1267             o_width = prefOffset;
1268
1269             if (o_width < 0.1)
1270                 o_width = 0.1;
1271             o_miter = i_style->stroke_miterlimit.value * o_width;
1272         }
1273
1274         Path *orig = Path_for_item(item, false);
1275         if (orig == NULL) {
1276             g_free(style);
1277             curve->unref();
1278             continue;
1279         }
1280
1281         Path *res = new Path;
1282         res->SetBackData(false);
1283
1284         {
1285             Shape *theShape = new Shape;
1286             Shape *theRes = new Shape;
1287
1288             orig->ConvertWithBackData(0.03);
1289             orig->Fill(theShape, 0);
1290
1291             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1292             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1293             if (val && strcmp(val, "nonzero") == 0)
1294             {
1295                 theRes->ConvertToShape(theShape, fill_nonZero);
1296             }
1297             else if (val && strcmp(val, "evenodd") == 0)
1298             {
1299                 theRes->ConvertToShape(theShape, fill_oddEven);
1300             }
1301             else
1302             {
1303                 theRes->ConvertToShape(theShape, fill_nonZero);
1304             }
1305
1306             // et maintenant: offset
1307             // methode inexacte
1308 /*                      Path *originaux[1];
1309                         originaux[0] = orig;
1310                         theRes->ConvertToForme(res, 1, originaux);
1311
1312                         if (expand) {
1313                         res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1314                         } else {
1315                         res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1316                         }
1317
1318                         orig->ConvertWithBackData(1.0);
1319                         orig->Fill(theShape, 0);
1320                         theRes->ConvertToShape(theShape, fill_positive);
1321                         originaux[0] = orig;
1322                         theRes->ConvertToForme(res, 1, originaux);
1323
1324                         if (o_width >= 0.5) {
1325                         //     res->Coalesce(1.0);
1326                         res->ConvertEvenLines(1.0);
1327                         res->Simplify(1.0);
1328                         } else {
1329                         //      res->Coalesce(o_width);
1330                         res->ConvertEvenLines(1.0*o_width);
1331                         res->Simplify(1.0 * o_width);
1332                         }    */
1333             // methode par makeoffset
1334
1335             if (expand)
1336             {
1337                 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1338             }
1339             else
1340             {
1341                 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1342             }
1343             theRes->ConvertToShape(theShape, fill_positive);
1344
1345             res->Reset();
1346             theRes->ConvertToForme(res);
1347
1348             if (o_width >= 1.0)
1349             {
1350                 res->ConvertEvenLines(1.0);
1351                 res->Simplify(1.0);
1352             }
1353             else
1354             {
1355                 res->ConvertEvenLines(1.0*o_width);
1356                 res->Simplify(1.0 * o_width);
1357             }
1358
1359             delete theShape;
1360             delete theRes;
1361         }
1362
1363         did = true;
1364
1365         curve->unref();
1366         // remember the position of the item
1367         gint pos = SP_OBJECT_REPR(item)->position();
1368         // remember parent
1369         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1370         // remember id
1371         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1372
1373         selection->remove(item);
1374         SP_OBJECT(item)->deleteObject(false);
1375
1376         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1377
1378             gchar tstr[80];
1379
1380             tstr[79] = '\0';
1381
1382             Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1383             Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1384
1385             repr->setAttribute("style", style);
1386
1387             gchar *str = res->svg_dump_path();
1388             repr->setAttribute("d", str);
1389             g_free(str);
1390
1391             // add the new repr to the parent
1392             parent->appendChild(repr);
1393
1394             // move to the saved position
1395             repr->setPosition(pos > 0 ? pos : 0);
1396
1397             SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1398
1399             // reapply the transform
1400             sp_item_write_transform(newitem, repr, transform);
1401
1402             repr->setAttribute("id", id);
1403
1404             selection->add(repr);
1405
1406             Inkscape::GC::release(repr);
1407         }
1408
1409         delete orig;
1410         delete res;
1411     }
1412
1413     if (did) {
1414         sp_document_done(sp_desktop_document(desktop),
1415                          (expand ? SP_VERB_SELECTION_OFFSET : SP_VERB_SELECTION_INSET),
1416                          (expand ? _("Outset path") : _("Inset path")));
1417     } else {
1418         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1419         return;
1420     }
1421 }
1422
1423
1424 static bool
1425 sp_selected_path_simplify_items(SPDesktop *desktop,
1426                                 Inkscape::Selection *selection, GSList *items,
1427                                 float threshold,  bool justCoalesce,
1428                                 float angleLimit, bool breakableAngles,
1429                                 bool modifySelection);
1430
1431
1432 //return true if we changed something, else false
1433 bool
1434 sp_selected_path_simplify_item(SPDesktop *desktop,
1435                  Inkscape::Selection *selection, SPItem *item,
1436                  float threshold,  bool justCoalesce,
1437                  float angleLimit, bool breakableAngles,
1438                  gdouble size,     bool modifySelection)
1439 {
1440     if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1441         return false;
1442
1443     //If this is a group, do the children instead
1444     if (SP_IS_GROUP(item)) {
1445         GSList *items = sp_item_group_item_list(SP_GROUP(item));
1446
1447         return sp_selected_path_simplify_items(desktop, selection, items,
1448                                                threshold, justCoalesce,
1449                                                angleLimit, breakableAngles,
1450                                                false);
1451     }
1452
1453
1454     SPCurve *curve = NULL;
1455
1456     if (SP_IS_SHAPE(item)) {
1457         curve = sp_shape_get_curve(SP_SHAPE(item));
1458         if (!curve)
1459             return false;
1460     }
1461
1462     if (SP_IS_TEXT(item)) {
1463         curve = SP_TEXT(item)->getNormalizedBpath();
1464         if (!curve)
1465             return false;
1466     }
1467
1468     // save the transform, to re-apply it after simplification
1469     NR::Matrix const transform(item->transform);
1470
1471     /*
1472        reset the transform, effectively transforming the item by transform.inverse();
1473        this is necessary so that the item is transformed twice back and forth,
1474        allowing all compensations to cancel out regardless of the preferences
1475     */
1476     sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1477
1478     gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1479     gchar *mask = g_strdup(SP_OBJECT_REPR(item)->attribute("mask"));
1480     gchar *clip_path = g_strdup(SP_OBJECT_REPR(item)->attribute("clip-path"));
1481
1482     Path *orig = Path_for_item(item, false);
1483     if (orig == NULL) {
1484         g_free(style);
1485         curve->unref();
1486         return false;
1487     }
1488
1489     curve->unref();
1490     // remember the position of the item
1491     gint pos = SP_OBJECT_REPR(item)->position();
1492     // remember parent
1493     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1494     // remember id
1495     char const *id = SP_OBJECT_REPR(item)->attribute("id");
1496     // remember path effect
1497     char const *patheffect = SP_OBJECT_REPR(item)->attribute("inkscape:path-effect");
1498
1499     //If a group was selected, to not change the selection list
1500     if (modifySelection)
1501         selection->remove(item);
1502
1503     SP_OBJECT(item)->deleteObject(false);
1504
1505     if ( justCoalesce ) {
1506         orig->Coalesce(threshold * size);
1507     } else {
1508         orig->ConvertEvenLines(threshold * size);
1509         orig->Simplify(threshold * size);
1510     }
1511
1512     Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
1513     Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1514
1515     // restore style, mask and clip-path
1516     repr->setAttribute("style", style);
1517     g_free(style);
1518
1519     if ( mask ) {
1520         repr->setAttribute("mask", mask);
1521         g_free(mask);
1522     }
1523
1524     if ( clip_path ) {
1525         repr->setAttribute("clip-path", clip_path);
1526         g_free(clip_path);
1527     }
1528
1529     // path
1530     gchar *str = orig->svg_dump_path();
1531     if (patheffect)
1532         repr->setAttribute("inkscape:original-d", str);
1533     else
1534         repr->setAttribute("d", str);
1535     g_free(str);
1536
1537     // restore id
1538     repr->setAttribute("id", id);
1539
1540     // add the new repr to the parent
1541     parent->appendChild(repr);
1542
1543     // move to the saved position
1544     repr->setPosition(pos > 0 ? pos : 0);
1545
1546     SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1547
1548     // reapply the transform
1549     sp_item_write_transform(newitem, repr, transform);
1550
1551     // restore path effect
1552     repr->setAttribute("inkscape:path-effect", patheffect);
1553
1554     //If we are not in a selected group
1555     if (modifySelection)
1556         selection->add(repr);
1557
1558     Inkscape::GC::release(repr);
1559
1560     // clean up
1561     if (orig) delete orig;
1562
1563     return true;
1564 }
1565
1566
1567 bool
1568 sp_selected_path_simplify_items(SPDesktop *desktop,
1569                                 Inkscape::Selection *selection, GSList *items,
1570                                 float threshold,  bool justCoalesce,
1571                                 float angleLimit, bool breakableAngles,
1572                                 bool modifySelection)
1573 {
1574   bool simplifyIndividualPaths =
1575     (bool) prefs_get_int_attribute("options.simplifyindividualpaths", "value", 0);
1576
1577   gchar *simplificationType;
1578   if (simplifyIndividualPaths) {
1579       simplificationType = _("Simplifying paths (separately):");
1580   } else {
1581       simplificationType = _("Simplifying paths:");
1582   }
1583
1584   bool didSomething = false;
1585
1586   NR::Maybe<NR::Rect> selectionBbox = selection->bounds();
1587   if (!selectionBbox) {
1588     return false;
1589   }
1590   gdouble selectionSize  = L2(selectionBbox->dimensions());
1591
1592   gdouble simplifySize  = selectionSize;
1593
1594   int pathsSimplified = 0;
1595   int totalPathCount  = g_slist_length(items);
1596
1597   // set "busy" cursor
1598   desktop->setWaitingCursor();
1599
1600   for (; items != NULL; items = items->next) {
1601       SPItem *item = (SPItem *) items->data;
1602
1603       if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1604           continue;
1605
1606       if (simplifyIndividualPaths) {
1607           NR::Maybe<NR::Rect> itemBbox = item->getBounds(from_2geom(sp_item_i2d_affine(item)));
1608           if (itemBbox) {
1609               simplifySize      = L2(itemBbox->dimensions());
1610           } else {
1611               simplifySize      = 0;
1612           }
1613       }
1614
1615       pathsSimplified++;
1616
1617       if (pathsSimplified % 20 == 0) {
1618         gchar *message = g_strdup_printf(_("%s <b>%d</b> of <b>%d</b> paths simplified..."), simplificationType, pathsSimplified, totalPathCount);
1619         desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, message);
1620       }
1621
1622       didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1623                           threshold, justCoalesce, angleLimit, breakableAngles, simplifySize, modifySelection);
1624   }
1625
1626   desktop->clearWaitingCursor();
1627
1628   if (pathsSimplified > 20) {
1629     desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, g_strdup_printf(_("<b>%d</b> paths simplified."), pathsSimplified));
1630   }
1631
1632   return didSomething;
1633 }
1634
1635 void
1636 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1637                        float angleLimit, bool breakableAngles)
1638 {
1639     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1640
1641     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1642
1643     if (selection->isEmpty()) {
1644         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1645                          _("Select <b>path(s)</b> to simplify."));
1646         return;
1647     }
1648
1649     GSList *items = g_slist_copy((GSList *) selection->itemList());
1650
1651     bool didSomething = sp_selected_path_simplify_items(desktop, selection,
1652                                                         items, threshold,
1653                                                         justCoalesce,
1654                                                         angleLimit,
1655                                                         breakableAngles, true);
1656
1657     if (didSomething)
1658         sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1659                          _("Simplify"));
1660     else
1661         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1662
1663 }
1664
1665
1666 // globals for keeping track of accelerated simplify
1667 static double previousTime      = 0.0;
1668 static gdouble simplifyMultiply = 1.0;
1669
1670 void
1671 sp_selected_path_simplify(void)
1672 {
1673     gdouble simplifyThreshold =
1674         prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1675     bool simplifyJustCoalesce =
1676         (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1677
1678     //Get the current time
1679     GTimeVal currentTimeVal;
1680     g_get_current_time(&currentTimeVal);
1681     double currentTime = currentTimeVal.tv_sec * 1000000 +
1682                 currentTimeVal.tv_usec;
1683
1684     //Was the previous call to this function recent? (<0.5 sec)
1685     if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1686
1687         // add to the threshold 1/2 of its original value
1688         simplifyMultiply  += 0.5;
1689         simplifyThreshold *= simplifyMultiply;
1690
1691     } else {
1692         // reset to the default
1693         simplifyMultiply = 1;
1694     }
1695
1696     //remember time for next call
1697     previousTime = currentTime;
1698
1699     //g_print("%g\n", simplify_threshold);
1700
1701     //Make the actual call
1702     sp_selected_path_simplify_selection(simplifyThreshold,
1703                       simplifyJustCoalesce, 0.0, false);
1704 }
1705
1706
1707
1708 // fonctions utilitaires
1709
1710 bool
1711 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1712 {
1713     if (who == NULL || a == NULL)
1714         return false;
1715     if (who == a)
1716         return true;
1717     return Ancetre(sp_repr_parent(a), who);
1718 }
1719
1720 Path *
1721 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1722 {
1723     SPCurve *curve = curve_for_item(item);
1724     NArtBpath *bpath = bpath_for_curve(item, curve, doTransformation, transformFull);
1725
1726     if (bpath == NULL) {
1727         return NULL;
1728     }
1729
1730     Path *dest = bpath_to_Path(bpath);
1731
1732     g_free(bpath);
1733
1734     curve->unref();
1735
1736     return dest;
1737 }
1738
1739 /*
1740  * This function always returns a new NArtBpath, the caller must g_free the returned path!
1741 */
1742 NArtBpath *
1743 bpath_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull)
1744 {
1745     if (curve == NULL)
1746         return NULL;
1747
1748     NArtBpath const *bpath = SP_CURVE_BPATH(curve);
1749     if (bpath == NULL) {
1750         return NULL;
1751     }
1752
1753     NArtBpath *new_bpath; // we will get a duplicate which has to be freed at some point!
1754     if (doTransformation) {
1755         if (transformFull) {
1756             new_bpath = nr_artpath_affine(bpath, from_2geom(sp_item_i2doc_affine(item)));
1757         } else {
1758             new_bpath = nr_artpath_affine(bpath, item->transform);
1759         }
1760     } else {
1761         new_bpath = nr_artpath_affine(bpath, NR::identity());
1762     }
1763
1764     return new_bpath;
1765 }
1766
1767 SPCurve* curve_for_item(SPItem *item)
1768 {
1769     if (!item)
1770         return NULL;
1771
1772     SPCurve *curve = NULL;
1773
1774     if (SP_IS_SHAPE(item)) {
1775         if (SP_IS_PATH(item)) {
1776             curve = sp_path_get_curve_for_edit(SP_PATH(item));
1777         } else {
1778             curve = sp_shape_get_curve(SP_SHAPE(item));
1779         }
1780     }
1781     else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item))
1782     {
1783         curve = te_get_layout(item)->convertToCurves();
1784     }
1785     else if (SP_IS_IMAGE(item))
1786     {
1787         curve = sp_image_get_curve(SP_IMAGE(item));
1788     }
1789
1790     return curve; // do not forget to unref the curve at some point!
1791 }
1792
1793 Path *bpath_to_Path(NArtBpath const *bpath) {
1794     Path *dest = new Path;
1795     dest->SetBackData(false);
1796     {
1797         int   i;
1798         bool  closed = false;
1799         float lastX  = 0.0;
1800         float lastY  = 0.0;
1801
1802         for (i = 0; bpath[i].code != NR_END; i++) {
1803             switch (bpath[i].code) {
1804                 case NR_LINETO:
1805                     lastX = bpath[i].x3;
1806                     lastY = bpath[i].y3;
1807                     {
1808                         NR::Point tmp(lastX, lastY);
1809                         dest->LineTo(tmp);
1810                     }
1811                     break;
1812
1813                 case NR_CURVETO:
1814                 {
1815                     NR::Point tmp, tms, tme;
1816                     tmp[0]=bpath[i].x3;
1817                     tmp[1]=bpath[i].y3;
1818                     tms[0]=3 * (bpath[i].x1 - lastX);
1819                     tms[1]=3 * (bpath[i].y1 - lastY);
1820                     tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1821                     tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1822                     dest->CubicTo(tmp,tms,tme);
1823                 }
1824                 lastX = bpath[i].x3;
1825                 lastY = bpath[i].y3;
1826                 break;
1827
1828                 case NR_MOVETO_OPEN:
1829                 case NR_MOVETO:
1830                     if (closed)
1831                         dest->Close();
1832                     closed = (bpath[i].code == NR_MOVETO);
1833                     lastX = bpath[i].x3;
1834                     lastY = bpath[i].y3;
1835                     {
1836                         NR::Point  tmp(lastX, lastY);
1837                         dest->MoveTo(tmp);
1838                     }
1839                     break;
1840                 default:
1841                     break;
1842             }
1843         }
1844         if (closed)
1845             dest->Close();
1846     }
1847     return dest;
1848 }
1849
1850 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p, unsigned seg)
1851 {
1852     //get nearest position on path
1853     Path::cut_position pos = path->PointToCurvilignPosition(p, seg);
1854     return pos;
1855 }
1856
1857 NR::Point get_point_on_Path(Path *path, int piece, double t)
1858 {
1859     NR::Point p;
1860     path->PointAt(piece, t, p);
1861     return p;
1862 }
1863
1864
1865 /*
1866   Local Variables:
1867   mode:c++
1868   c-file-style:"stroustrup"
1869   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1870   indent-tabs-mode:nil
1871   fill-column:99
1872   End:
1873 */
1874 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :