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 <vector>
  21 #include <glib/gmem.h>
  22 #include "xml/repr.h"
  23 #include "svg/svg.h"
  24 #include "sp-path.h"
  25 #include "sp-shape.h"
  26 #include "sp-marker.h"
  27 #include "enums.h"
  28 #include "sp-text.h"
  29 #include "sp-item-group.h"
  30 #include "style.h"
  31 #include "inkscape.h"
  32 #include "document.h"
  33 #include "message-stack.h"
  34 #include "selection.h"
  35 #include "desktop-handles.h"
  36 #include "desktop.h"
  37 #include "display/canvas-bpath.h"
  38 #include "display/curve.h"
  39 #include <glibmm/i18n.h>
  40 #include "prefs-utils.h"
  41
  42 #include "libnr/n-art-bpath.h"
  43 #include "libnr/nr-path.h"
  44 #include "xml/repr.h"
  45 #include "xml/repr-sorting.h"
  46
  47 #include <libnr/nr-matrix-fns.h>
  48 #include <libnr/nr-matrix-ops.h>
  49 #include <libnr/nr-matrix-translate-ops.h>
  50 #include <libnr/nr-scale-matrix-ops.h>
  51
  52 #include "livarot/Path.h"
  53 #include "livarot/Shape.h"
  54
  55 #include "splivarot.h"
  56
  57 bool   Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who);
  58
  59 void sp_selected_path_boolop(bool_op bop);
  60 void sp_selected_path_do_offset(bool expand, double prefOffset);
  61 void sp_selected_path_create_offset_object(int expand, bool updating);
  62
  63 void
  64 sp_selected_path_union()
  65 {
  66     sp_selected_path_boolop(bool_op_union);
  67 }
  68
  69 void
  70 sp_selected_path_intersect()
  71 {
  72     sp_selected_path_boolop(bool_op_inters);
  73 }
  74
  75 void
  76 sp_selected_path_diff()
  77 {
  78     sp_selected_path_boolop(bool_op_diff);
  79 }
  80
  81 void
  82 sp_selected_path_symdiff()
  83 {
  84     sp_selected_path_boolop(bool_op_symdiff);
  85 }
  86 void
  87 sp_selected_path_cut()
  88 {
  89     sp_selected_path_boolop(bool_op_cut);
  90 }
  91 void
  92 sp_selected_path_slice()
  93 {
  94     sp_selected_path_boolop(bool_op_slice);
  95 }
  96
  97
  98 // boolean operations
  99 // take the source paths from the file, do the operation, delete the originals and add the results
 100 void
 101 sp_selected_path_boolop(bool_op bop)
 102 {
 103     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 104
 105     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 106
 107     GSList *il = (GSList *) selection->itemList();
 108
 109     if (g_slist_length(il) < 2) {
 110         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>at least 2 paths</b> to perform a boolean operation."));
 111         return;
 112     }
 113
 114     if (g_slist_length(il) > 2) {
 115         if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
 116             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Select <b>exactly 2 paths</b> to perform difference, XOR, division, or path cut."));
 117             return;
 118         }
 119     }
 120
 121     // reverseOrderForOp marks whether the order of the list is the top->down order
 122     // it's only used when there are 2 objects, and for operations who need to know the
 123     // topmost object (differences, cuts)
 124     bool reverseOrderForOp = false;
 125
 126     // mettre les elements de la liste dans l'ordre pour ces operations
 127     if (bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice) {
 128         // check in the tree to find which element of the selection list is topmost (for 2-operand commands only)
 129         Inkscape::XML::Node *a = SP_OBJECT_REPR(il->data);
 130         Inkscape::XML::Node *b = SP_OBJECT_REPR(il->next->data);
 131
 132         if (a == NULL || b == NULL) {
 133             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."));
 134             return;
 135         }
 136
 137         if (Ancetre(a, b)) {
 138             // a is the parent of b, already in the proper order
 139         } else if (Ancetre(b, a)) {
 140             // reverse order
 141             reverseOrderForOp = true;
 142         } else {
 143
 144             // objects are not in parent/child relationship;
 145             // find their lowest common ancestor
 146             Inkscape::XML::Node *dad = LCA(a, b);
 147             if (dad == 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             // find the children of the LCA that lead from it to the a and b
 153             Inkscape::XML::Node *as = AncetreFils(a, dad);
 154             Inkscape::XML::Node *bs = AncetreFils(b, dad);
 155
 156             // find out which comes first
 157             for (Inkscape::XML::Node *child = dad->firstChild(); child; child = child->next()) {
 158                 if (child == as) {
 159                     /* a first, so reverse. */
 160                     reverseOrderForOp = true;
 161                     break;
 162                 }
 163                 if (child == bs)
 164                     break;
 165             }
 166         }
 167     }
 168
 169     il = g_slist_copy(il);
 170
 171     // first check if all the input objects have shapes
 172     // otherwise bail out
 173     for (GSList *l = il; l != NULL; l = l->next)
 174     {
 175         SPItem *item = SP_ITEM(l->data);
 176         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 177         {
 178             desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("One of the objects is <b>not a path</b>, cannot perform boolean operation."));
 179             g_slist_free(il);
 180             return;
 181         }
 182     }
 183
 184     // extract the livarot Paths from the source objects
 185     // also get the winding rule specified in the style
 186     int nbOriginaux = g_slist_length(il);
 187     std::vector<Path *> originaux(nbOriginaux);
 188     std::vector<FillRule> origWind(nbOriginaux);
 189     int curOrig;
 190     {
 191         curOrig = 0;
 192         for (GSList *l = il; l != NULL; l = l->next)
 193         {
 194             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(il->data), "style");
 195             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
 196             if (val && strcmp(val, "nonzero") == 0) {
 197                 origWind[curOrig]= fill_nonZero;
 198             } else if (val && strcmp(val, "evenodd") == 0) {
 199                 origWind[curOrig]= fill_oddEven;
 200             } else {
 201                 origWind[curOrig]= fill_nonZero;
 202             }
 203
 204             originaux[curOrig] = Path_for_item((SPItem *) l->data, true, true);
 205             if (originaux[curOrig] == NULL || originaux[curOrig]->descr_cmd.size() <= 1)
 206             {
 207                 for (int i = curOrig; i >= 0; i--) delete originaux[i];
 208                 g_slist_free(il);
 209                 return;
 210             }
 211             curOrig++;
 212         }
 213     }
 214     // reverse if needed
 215     // note that the selection list keeps its order
 216     if ( reverseOrderForOp ) {
 217         Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 218         FillRule swai=origWind[0]; origWind[0]=origWind[1]; origWind[1]=swai;
 219     }
 220
 221     // and work
 222     // some temporary instances, first
 223     Shape *theShapeA = new Shape;
 224     Shape *theShapeB = new Shape;
 225     Shape *theShape = new Shape;
 226     Path *res = new Path;
 227     res->SetBackData(false);
 228     Path::cut_position  *toCut=NULL;
 229     int                  nbToCut=0;
 230
 231     if ( bop == bool_op_inters || bop == bool_op_union || bop == bool_op_diff || bop == bool_op_symdiff ) {
 232         // true boolean op
 233         // get the polygons of each path, with the winding rule specified, and apply the operation iteratively
 234         originaux[0]->ConvertWithBackData(0.1);
 235
 236         originaux[0]->Fill(theShape, 0);
 237
 238         theShapeA->ConvertToShape(theShape, origWind[0]);
 239
 240         curOrig = 1;
 241         for (GSList *l = il->next; l != NULL; l = l->next) {
 242             originaux[curOrig]->ConvertWithBackData(0.1);
 243
 244             originaux[curOrig]->Fill(theShape, curOrig);
 245
 246             theShapeB->ConvertToShape(theShape, origWind[curOrig]);
 247
 248             // les elements arrivent en ordre inverse dans la liste
 249             theShape->Booleen(theShapeB, theShapeA, bop);
 250
 251             {
 252                 Shape *swap = theShape;
 253                 theShape = theShapeA;
 254                 theShapeA = swap;
 255             }
 256             curOrig++;
 257         }
 258
 259         {
 260             Shape *swap = theShape;
 261             theShape = theShapeA;
 262             theShapeA = swap;
 263         }
 264
 265     } else if ( bop == bool_op_cut ) {
 266         // cuts= sort of a bastard boolean operation, thus not the axact same modus operandi
 267         // technically, the cut path is not necessarily a polygon (thus has no winding rule)
 268         // it is just uncrossed, and cleaned from duplicate edges and points
 269         // then it's fed to Booleen() which will uncross it against the other path
 270         // then comes the trick: each edge of the cut path is duplicated (one in each direction),
 271         // thus making a polygon. the weight of the edges of the cut are all 0, but
 272         // the Booleen need to invert the ones inside the source polygon (for the subsequent
 273         // ConvertToForme)
 274
 275         // the cut path needs to have the highest pathID in the back data
 276         // that's how the Booleen() function knows it's an edge of the cut
 277
 278         // FIXME: this gives poor results, the final paths are full of extraneous nodes. Decreasing
 279         // ConvertWithBackData parameter below simply increases the number of nodes, so for now I
 280         // left it at 1.0. Investigate replacing this by a combination of difference and
 281         // intersection of the same two paths. -- bb
 282         {
 283             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 284             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 285         }
 286         originaux[0]->ConvertWithBackData(1.0);
 287
 288         originaux[0]->Fill(theShape, 0);
 289
 290         theShapeA->ConvertToShape(theShape, origWind[0]);
 291
 292         originaux[1]->ConvertWithBackData(1.0);
 293
 294         originaux[1]->Fill(theShape, 1,false,false,false); //do not closeIfNeeded
 295
 296         theShapeB->ConvertToShape(theShape, fill_justDont); // fill_justDont doesn't computes winding numbers
 297
 298         // les elements arrivent en ordre inverse dans la liste
 299         theShape->Booleen(theShapeB, theShapeA, bool_op_cut, 1);
 300
 301     } else if ( bop == bool_op_slice ) {
 302         // slice is not really a boolean operation
 303         // you just put the 2 shapes in a single polygon, uncross it
 304         // the points where the degree is > 2 are intersections
 305         // just check it's an intersection on the path you want to cut, and keep it
 306         // the intersections you have found are then fed to ConvertPositionsToMoveTo() which will
 307         // make new subpath at each one of these positions
 308         // inversion pour l'op\8eration
 309         {
 310             Path* swap=originaux[0];originaux[0]=originaux[1];originaux[1]=swap;
 311             int   swai=origWind[0];origWind[0]=origWind[1];origWind[1]=(fill_typ)swai;
 312         }
 313         originaux[0]->ConvertWithBackData(1.0);
 314
 315         originaux[0]->Fill(theShapeA, 0,false,false,false); // don't closeIfNeeded
 316
 317         originaux[1]->ConvertWithBackData(1.0);
 318
 319         originaux[1]->Fill(theShapeA, 1,true,false,false);// don't closeIfNeeded and just dump in the shape, don't reset it
 320
 321         theShape->ConvertToShape(theShapeA, fill_justDont);
 322
 323         if ( theShape->hasBackData() ) {
 324             // should always be the case, but ya never know
 325             {
 326                 for (int i = 0; i < theShape->numberOfPoints(); i++) {
 327                     if ( theShape->getPoint(i).totalDegree() > 2 ) {
 328                         // possibly an intersection
 329                         // we need to check that at least one edge from the source path is incident to it
 330                         // before we declare it's an intersection
 331                         int cb = theShape->getPoint(i).incidentEdge[FIRST];
 332                         int   nbOrig=0;
 333                         int   nbOther=0;
 334                         int   piece=-1;
 335                         float t=0.0;
 336                         while ( cb >= 0 && cb < theShape->numberOfEdges() ) {
 337                             if ( theShape->ebData[cb].pathID == 0 ) {
 338                                 // the source has an edge incident to the point, get its position on the path
 339                                 piece=theShape->ebData[cb].pieceID;
 340                                 if ( theShape->getEdge(cb).st == i ) {
 341                                     t=theShape->ebData[cb].tSt;
 342                                 } else {
 343                                     t=theShape->ebData[cb].tEn;
 344                                 }
 345                                 nbOrig++;
 346                             }
 347                             if ( theShape->ebData[cb].pathID == 1 ) nbOther++; // the cut is incident to this point
 348                             cb=theShape->NextAt(i, cb);
 349                         }
 350                         if ( nbOrig > 0 && nbOther > 0 ) {
 351                             // point incident to both path and cut: an intersection
 352                             // note that you only keep one position on the source; you could have degenerate
 353                             // cases where the source crosses itself at this point, and you wouyld miss an intersection
 354                             toCut=(Path::cut_position*)realloc(toCut, (nbToCut+1)*sizeof(Path::cut_position));
 355                             toCut[nbToCut].piece=piece;
 356                             toCut[nbToCut].t=t;
 357                             nbToCut++;
 358                         }
 359                     }
 360                 }
 361             }
 362             {
 363                 // i think it's useless now
 364                 int i = theShape->numberOfEdges() - 1;
 365                 for (;i>=0;i--) {
 366                     if ( theShape->ebData[i].pathID == 1 ) {
 367                         theShape->SubEdge(i);
 368                     }
 369                 }
 370             }
 371
 372         }
 373     }
 374
 375     int*    nesting=NULL;
 376     int*    conts=NULL;
 377     int     nbNest=0;
 378     // pour compenser le swap juste avant
 379     if ( bop == bool_op_slice ) {
 380 //    theShape->ConvertToForme(res, nbOriginaux, originaux, true);
 381 //    res->ConvertForcedToMoveTo();
 382         res->Copy(originaux[0]);
 383         res->ConvertPositionsToMoveTo(nbToCut, toCut); // cut where you found intersections
 384         free(toCut);
 385     } else if ( bop == bool_op_cut ) {
 386         // il faut appeler pour desallouer PointData (pas vital, mais bon)
 387         // the Booleen() function did not deallocated the point_data array in theShape, because this
 388         // function needs it.
 389         // this function uses the point_data to get the winding number of each path (ie: is a hole or not)
 390         // for later reconstruction in objects, you also need to extract which path is parent of holes (nesting info)
 391         theShape->ConvertToFormeNested(res, nbOriginaux, &originaux[0], 1, nbNest, nesting, conts);
 392     } else {
 393         theShape->ConvertToForme(res, nbOriginaux, &originaux[0]);
 394     }
 395
 396     delete theShape;
 397     delete theShapeA;
 398     delete theShapeB;
 399     for (int i = 0; i < nbOriginaux; i++)  delete originaux[i];
 400
 401     if (res->descr_cmd.size() <= 1)
 402     {
 403         // only one command, presumably a moveto: it isn't a path
 404         for (GSList *l = il; l != NULL; l = l->next)
 405         {
 406             SP_OBJECT(l->data)->deleteObject();
 407         }
 408         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 409                          /* TODO: annotate */ "splivarot.cpp:409");
 410         selection->clear();
 411
 412         delete res;
 413         g_slist_free(il);
 414         return;
 415     }
 416
 417     // remember important aspects of the source path, to be restored
 418     Inkscape::XML::Node *repr_source;
 419     if ( bop == bool_op_diff || bop == bool_op_symdiff || bop == bool_op_cut || bop == bool_op_slice ) {
 420         if (reverseOrderForOp) {
 421              repr_source = SP_OBJECT_REPR(il->data);
 422         } else {
 423              repr_source = SP_OBJECT_REPR(il->next->data);
 424         }
 425     } else {
 426         // find out the bottom object
 427         GSList *sorted = g_slist_copy((GSList *) selection->reprList());
 428
 429         sorted = g_slist_sort(sorted, (GCompareFunc) sp_repr_compare_position);
 430         repr_source = ((Inkscape::XML::Node *) sorted->data);
 431         g_slist_free(sorted);
 432     }
 433     gint pos = repr_source->position();
 434     Inkscape::XML::Node *parent = sp_repr_parent(repr_source);
 435     char const *id = repr_source->attribute("id");
 436     char const *style = repr_source->attribute("style");
 437
 438
 439     // remove source paths
 440     selection->clear();
 441     for (GSList *l = il; l != NULL; l = l->next) {
 442         // if this is the bottommost object,
 443         if (!strcmp(SP_OBJECT_REPR(l->data)->attribute("id"), id)) {
 444             // delete it so that its clones don't get alerted; this object will be restored shortly, with the same id
 445             SP_OBJECT(l->data)->deleteObject(false);
 446         } else {
 447             // delete the object for real, so that its clones can take appropriate action
 448             SP_OBJECT(l->data)->deleteObject();
 449         }
 450     }
 451     g_slist_free(il);
 452
 453     // premultiply by the inverse of parent's repr
 454     SPItem *parent_item = SP_ITEM(sp_desktop_document(desktop)->getObjectByRepr(parent));
 455     NR::Matrix local = sp_item_i2doc_affine(parent_item);
 456     gchar affinestr[80];
 457     gchar *transform = NULL;
 458     if (!local.test_identity() && sp_svg_transform_write(affinestr, 79, local.inverse())) {
 459         transform = affinestr;
 460     }
 461
 462     // now that we have the result, add it on the canvas
 463     if ( bop == bool_op_cut || bop == bool_op_slice ) {
 464         int    nbRP=0;
 465         Path** resPath;
 466         if ( bop == bool_op_slice ) {
 467             // there are moveto's at each intersection, but it's still one unique path
 468             // so break it down and add each subpath independently
 469             // we could call break_apart to do this, but while we have the description...
 470             resPath=res->SubPaths(nbRP, false);
 471         } else {
 472             // cut operation is a bit wicked: you need to keep holes
 473             // that's why you needed the nesting
 474             // ConvertToFormeNested() dumped all the subpath in a single Path "res", so we need
 475             // to get the path for each part of the polygon. that's why you need the nesting info:
 476             // to know in wich subpath to add a subpath
 477             resPath=res->SubPathsWithNesting(nbRP, true, nbNest, nesting, conts);
 478
 479             // cleaning
 480             if ( conts ) free(conts);
 481             if ( nesting ) free(nesting);
 482         }
 483
 484         // add all the pieces resulting from cut or slice
 485         for (int i=0;i<nbRP;i++) {
 486             gchar *d = resPath[i]->svg_dump_path();
 487
 488             Inkscape::XML::Node *repr = sp_repr_new("svg:path");
 489             repr->setAttribute("style", style);
 490             repr->setAttribute("d", d);
 491             g_free(d);
 492
 493             // for slice, remove fill
 494             if (bop == bool_op_slice) {
 495                 SPCSSAttr *css;
 496
 497                 css = sp_repr_css_attr_new();
 498                 sp_repr_css_set_property(css, "fill", "none");
 499
 500                 sp_repr_css_change(repr, css, "style");
 501
 502                 sp_repr_css_attr_unref(css);
 503             }
 504
 505             // we assign the same id on all pieces, but it on adding to document, it will be changed on all except one
 506             // this means it's basically random which of the pieces inherits the original's id and clones
 507             // a better algorithm might figure out e.g. the biggest piece
 508             repr->setAttribute("id", id);
 509
 510             repr->setAttribute("transform", transform);
 511
 512             // add the new repr to the parent
 513             parent->appendChild(repr);
 514
 515             // move to the saved position
 516             repr->setPosition(pos > 0 ? pos : 0);
 517
 518             selection->add(repr);
 519             Inkscape::GC::release(repr);
 520
 521             delete resPath[i];
 522         }
 523         if ( resPath ) free(resPath);
 524
 525     } else {
 526         gchar *d = res->svg_dump_path();
 527
 528         Inkscape::XML::Node *repr = sp_repr_new("svg:path");
 529         repr->setAttribute("style", style);
 530
 531         repr->setAttribute("d", d);
 532         g_free(d);
 533
 534         repr->setAttribute("transform", transform);
 535
 536         repr->setAttribute("id", id);
 537         parent->appendChild(repr);
 538         repr->setPosition(pos > 0 ? pos : 0);
 539
 540         selection->add(repr);
 541         Inkscape::GC::release(repr);
 542     }
 543
 544     unsigned int operation_verb = SP_VERB_NONE;
 545     switch(bop) {
 546         case bool_op_union   : operation_verb = SP_VERB_SELECTION_UNION;     break;
 547         case bool_op_inters  : operation_verb = SP_VERB_SELECTION_INTERSECT; break;
 548         case bool_op_diff    : operation_verb = SP_VERB_SELECTION_DIFF;      break;
 549         case bool_op_symdiff : operation_verb = SP_VERB_SELECTION_SYMDIFF;   break;
 550         case bool_op_cut     : operation_verb = SP_VERB_SELECTION_CUT;       break;
 551         case bool_op_slice   : operation_verb = SP_VERB_SELECTION_SLICE;     break;
 552     }
 553
 554     sp_document_done(sp_desktop_document(desktop), operation_verb,
 555                      /* TODO: annotate */ "splivarot.cpp:555");
 556
 557     delete res;
 558 }
 559
 560
 561 void
 562 sp_selected_path_outline()
 563 {
 564     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
 565
 566     Inkscape::Selection *selection = sp_desktop_selection(desktop);
 567
 568     if (selection->isEmpty()) {
 569         // TRANSLATORS: "to outline" means "to convert stroke to path"
 570         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to outline."));
 571         return;
 572     }
 573
 574     bool did = false;
 575
 576     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
 577          items != NULL;
 578          items = items->next) {
 579
 580         SPItem *item = (SPItem *) items->data;
 581
 582         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
 583             continue;
 584
 585         SPCurve *curve = NULL;
 586         if (SP_IS_SHAPE(item)) {
 587             curve = sp_shape_get_curve(SP_SHAPE(item));
 588             if (curve == NULL)
 589                 continue;
 590         }
 591         if (SP_IS_TEXT(item)) {
 592             curve = SP_TEXT(item)->getNormalizedBpath();
 593             if (curve == NULL)
 594                 continue;
 595         }
 596
 597         {   // pas de stroke pas de chocolat
 598             SPCSSAttr *css = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
 599             gchar const *val = sp_repr_css_property(css, "stroke", NULL);
 600
 601             if (val == NULL || strcmp(val, "none") == 0) {
 602                 sp_curve_unref(curve);
 603                 continue;
 604             }
 605         }
 606
 607         // remember old stroke style, to be set on fill
 608         SPCSSAttr *ncss;
 609         {
 610             SPCSSAttr *ocss = sp_repr_css_attr_inherited(SP_OBJECT_REPR(item), "style");
 611             gchar const *val = sp_repr_css_property(ocss, "stroke", NULL);
 612             gchar const *opac = sp_repr_css_property(ocss, "stroke-opacity", NULL);
 613
 614             ncss = sp_repr_css_attr_new();
 615
 616             sp_repr_css_set_property(ncss, "stroke", "none");
 617             sp_repr_css_set_property(ncss, "stroke-opacity", "1.0");
 618             sp_repr_css_set_property(ncss, "fill", val);
 619             if ( opac ) {
 620                 sp_repr_css_set_property(ncss, "fill-opacity", opac);
 621             } else {
 622                 sp_repr_css_set_property(ncss, "fill-opacity", "1.0");
 623             }
 624             sp_repr_css_unset_property(ncss, "marker-start");
 625             sp_repr_css_unset_property(ncss, "marker-mid");
 626             sp_repr_css_unset_property(ncss, "marker-end");
 627         }
 628
 629         NR::Matrix const transform(item->transform);
 630         float const scale = transform.expansion();
 631         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
 632         SPStyle *i_style = SP_OBJECT(item)->style;
 633
 634         float o_width, o_miter;
 635         JoinType o_join;
 636         ButtType o_butt;
 637
 638         {
 639             int jointype, captype;
 640
 641             jointype = i_style->stroke_linejoin.computed;
 642             captype = i_style->stroke_linecap.computed;
 643             o_width = i_style->stroke_width.computed;
 644
 645             switch (jointype) {
 646                 case SP_STROKE_LINEJOIN_MITER:
 647                     o_join = join_pointy;
 648                     break;
 649                 case SP_STROKE_LINEJOIN_ROUND:
 650                     o_join = join_round;
 651                     break;
 652                 default:
 653                     o_join = join_straight;
 654                     break;
 655             }
 656
 657             switch (captype) {
 658                 case SP_STROKE_LINECAP_SQUARE:
 659                     o_butt = butt_square;
 660                     break;
 661                 case SP_STROKE_LINECAP_ROUND:
 662                     o_butt = butt_round;
 663                     break;
 664                 default:
 665                     o_butt = butt_straight;
 666                     break;
 667             }
 668
 669             if (o_width < 0.1)
 670                 o_width = 0.1;
 671             o_miter = i_style->stroke_miterlimit.value * o_width;
 672         }
 673
 674         Path *orig = Path_for_item(item, false);
 675         if (orig == NULL) {
 676             g_free(style);
 677             sp_curve_unref(curve);
 678             continue;
 679         }
 680
 681         Path *res = new Path;
 682         res->SetBackData(false);
 683
 684         if (i_style->stroke_dash.n_dash) {
 685             // For dashed strokes, use Stroke method, because Outline can't do dashes
 686             // However Stroke adds lots of extra nodes _or_ makes the path crooked, so consider this a temporary workaround
 687
 688             orig->ConvertWithBackData(0.1);
 689
 690             orig->DashPolylineFromStyle(i_style, scale, 0);
 691
 692             Shape* theShape = new Shape;
 693             orig->Stroke(theShape, false, 0.5*o_width, o_join, o_butt,
 694                          0.5 * o_miter);
 695             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 696
 697             Shape *theRes = new Shape;
 698
 699             theRes->ConvertToShape(theShape, fill_positive);
 700
 701             Path *originaux[1];
 702             originaux[0] = res;
 703             theRes->ConvertToForme(orig, 1, originaux);
 704
 705             res->Coalesce(5.0);
 706
 707             delete theShape;
 708             delete theRes;
 709
 710         } else {
 711
 712             orig->Outline(res, 0.5 * o_width, o_join, o_butt, 0.5 * o_miter);
 713
 714             orig->Coalesce(0.5 * o_width);
 715
 716             Shape *theShape = new Shape;
 717             Shape *theRes = new Shape;
 718
 719             res->ConvertWithBackData(1.0);
 720             res->Fill(theShape, 0);
 721             theRes->ConvertToShape(theShape, fill_positive);
 722
 723             Path *originaux[1];
 724             originaux[0] = res;
 725             theRes->ConvertToForme(orig, 1, originaux);
 726
 727             delete theShape;
 728             delete theRes;
 729         }
 730
 731         if (orig->descr_cmd.size() <= 1) {
 732             // ca a merd\8e, ou bien le resultat est vide
 733             delete res;
 734             delete orig;
 735             g_free(style);
 736             continue;
 737         }
 738
 739         did = true;
 740
 741         // remember the position of the item
 742         gint pos = SP_OBJECT_REPR(item)->position();
 743         // remember parent
 744         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
 745         // remember id
 746         char const *id = SP_OBJECT_REPR(item)->attribute("id");
 747
 748         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
 749
 750             Inkscape::XML::Node *repr = sp_repr_new("svg:path");
 751
 752             // restore old style
 753             repr->setAttribute("style", style);
 754
 755             // set old stroke style on fill
 756             sp_repr_css_change(repr, ncss, "style");
 757
 758             sp_repr_css_attr_unref(ncss);
 759
 760             gchar *str = orig->svg_dump_path();
 761             repr->setAttribute("d", str);
 762             g_free(str);
 763
 764
 765             if (SP_IS_SHAPE(item) && sp_shape_has_markers (SP_SHAPE(item))) {
 766
 767                 Inkscape::XML::Node *g_repr = sp_repr_new("svg:g");
 768
 769                 // add the group to the parent
 770                 parent->appendChild(g_repr);
 771                 // move to the saved position
 772                 g_repr->setPosition(pos > 0 ? pos : 0);
 773
 774                 g_repr->appendChild(repr);
 775                 repr->setAttribute("id", id);
 776                 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
 777                 sp_item_write_transform(newitem, repr, transform);
 778
 779                 SPShape *shape = SP_SHAPE(item);
 780
 781                 for (NArtBpath* bp = SP_CURVE_BPATH(shape->curve); bp->code != NR_END; bp++) {
 782                     for (int m = SP_MARKER_LOC_START; m < SP_MARKER_LOC_QTY; m++) {
 783                         if (sp_shape_marker_required (shape, m, bp)) {
 784
 785                             SPMarker* marker = SP_MARKER (shape->marker[m]);
 786                             SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (shape->marker[m]));
 787
 788                             NR::Matrix tr(sp_shape_marker_get_transform(shape, bp));
 789
 790                             if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
 791                                 tr = NR::scale(i_style->stroke_width.computed) * tr;
 792                             }
 793
 794                             // total marker transform
 795                             tr = marker_item->transform * marker->c2p * tr * transform;
 796
 797                             if (SP_OBJECT_REPR(marker_item)) {
 798                                 Inkscape::XML::Node *m_repr = SP_OBJECT_REPR(marker_item)->duplicate();
 799                                 g_repr->appendChild(m_repr);
 800                                 SPItem *marker_item = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(m_repr);
 801                                 sp_item_write_transform(marker_item, m_repr, tr);
 802                             }
 803                         }
 804                     }
 805                 }
 806
 807
 808                 selection->add(g_repr);
 809
 810                 Inkscape::GC::release(g_repr);
 811
 812
 813             } else {
 814
 815                 // add the new repr to the parent
 816                 parent->appendChild(repr);
 817
 818                 // move to the saved position
 819                 repr->setPosition(pos > 0 ? pos : 0);
 820
 821                 repr->setAttribute("id", id);
 822
 823                 SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
 824                 sp_item_write_transform(newitem, repr, transform);
 825
 826                 selection->add(repr);
 827
 828             }
 829
 830             Inkscape::GC::release(repr);
 831
 832             sp_curve_unref(curve);
 833             selection->remove(item);
 834             SP_OBJECT(item)->deleteObject(false);
 835
 836         }
 837
 838         delete res;
 839         delete orig;
 840         g_free(style);
 841
 842     }
 843
 844     if (did) {
 845         sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_OUTLINE,
 846                          /* TODO: annotate */ "splivarot.cpp:846");
 847     } else {
 848         // TRANSLATORS: "to outline" means "to convert stroke to path"
 849         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> to outline in the selection."));
 850         return;
 851     }
 852 }
 853
 854
 855 void
 856 sp_selected_path_offset()
 857 {
 858     double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
 859
 860     sp_selected_path_do_offset(true, prefOffset);
 861 }
 862 void
 863 sp_selected_path_inset()
 864 {
 865     double prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
 866
 867     sp_selected_path_do_offset(false, prefOffset);
 868 }
 869
 870 void
 871 sp_selected_path_offset_screen(double pixels)
 872 {
 873     sp_selected_path_do_offset(true,  pixels / SP_ACTIVE_DESKTOP->current_zoom());
 874 }
 875
 876 void
 877 sp_selected_path_inset_screen(double pixels)
 878 {
 879     sp_selected_path_do_offset(false,  pixels / SP_ACTIVE_DESKTOP->current_zoom());
 880 }
 881
 882
 883 void sp_selected_path_create_offset_object_zero()
 884 {
 885     sp_selected_path_create_offset_object(0, false);
 886 }
 887
 888 void sp_selected_path_create_offset()
 889 {
 890     sp_selected_path_create_offset_object(1, false);
 891 }
 892 void sp_selected_path_create_inset()
 893 {
 894     sp_selected_path_create_offset_object(-1, false);
 895 }
 896
 897 void sp_selected_path_create_updating_offset_object_zero()
 898 {
 899     sp_selected_path_create_offset_object(0, true);
 900 }
 901
 902 void sp_selected_path_create_updating_offset()
 903 {
 904     sp_selected_path_create_offset_object(1, true);
 905 }
 906 void sp_selected_path_create_updating_inset()
 907 {
 908     sp_selected_path_create_offset_object(-1, true);
 909 }
 910
 911 void
 912 sp_selected_path_create_offset_object(int expand, bool updating)
 913 {
 914     Inkscape::Selection *selection;
 915     Inkscape::XML::Node *repr;
 916     SPItem *item;
 917     SPCurve *curve;
 918     gchar *style, *str;
 919     SPDesktop *desktop;
 920     float o_width, o_miter;
 921     JoinType o_join;
 922     ButtType o_butt;
 923
 924     curve = NULL;
 925
 926     desktop = SP_ACTIVE_DESKTOP;
 927
 928     selection = sp_desktop_selection(desktop);
 929
 930     item = selection->singleItem();
 931
 932     if (item == NULL || ( !SP_IS_SHAPE(item) && !SP_IS_TEXT(item) ) ) {
 933         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Selected object is <b>not a path</b>, cannot inset/outset."));
 934         return;
 935     }
 936     if (SP_IS_SHAPE(item))
 937     {
 938         curve = sp_shape_get_curve(SP_SHAPE(item));
 939         if (curve == NULL)
 940             return;
 941     }
 942     if (SP_IS_TEXT(item))
 943     {
 944         curve = SP_TEXT(item)->getNormalizedBpath();
 945         if (curve == NULL)
 946             return;
 947     }
 948
 949     NR::Matrix const transform(item->transform);
 950
 951     sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
 952
 953     style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));
 954
 955     // remember the position of the item
 956     gint pos = SP_OBJECT_REPR(item)->position();
 957     // remember parent
 958     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
 959
 960     {
 961         SPStyle *i_style = SP_OBJECT(item)->style;
 962         int jointype, captype;
 963
 964         jointype = i_style->stroke_linejoin.value;
 965         captype = i_style->stroke_linecap.value;
 966         o_width = i_style->stroke_width.computed;
 967         if (jointype == SP_STROKE_LINEJOIN_MITER)
 968         {
 969             o_join = join_pointy;
 970         }
 971         else if (jointype == SP_STROKE_LINEJOIN_ROUND)
 972         {
 973             o_join = join_round;
 974         }
 975         else
 976         {
 977             o_join = join_straight;
 978         }
 979         if (captype == SP_STROKE_LINECAP_SQUARE)
 980         {
 981             o_butt = butt_square;
 982         }
 983         else if (captype == SP_STROKE_LINECAP_ROUND)
 984         {
 985             o_butt = butt_round;
 986         }
 987         else
 988         {
 989             o_butt = butt_straight;
 990         }
 991
 992         {
 993             double prefOffset = 1.0;
 994             prefOffset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", prefOffset);
 995             o_width = prefOffset;
 996         }
 997
 998         if (o_width < 0.01)
 999             o_width = 0.01;
1000         o_miter = i_style->stroke_miterlimit.value * o_width;
1001     }
1002
1003     Path *orig = Path_for_item(item, true, false);
1004     if (orig == NULL)
1005     {
1006         g_free(style);
1007         sp_curve_unref(curve);
1008         return;
1009     }
1010
1011     Path *res = new Path;
1012     res->SetBackData(false);
1013
1014     {
1015         Shape *theShape = new Shape;
1016         Shape *theRes = new Shape;
1017
1018         orig->ConvertWithBackData(1.0);
1019         orig->Fill(theShape, 0);
1020
1021         SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1022         gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1023         if (val && strcmp(val, "nonzero") == 0)
1024         {
1025             theRes->ConvertToShape(theShape, fill_nonZero);
1026         }
1027         else if (val && strcmp(val, "evenodd") == 0)
1028         {
1029             theRes->ConvertToShape(theShape, fill_oddEven);
1030         }
1031         else
1032         {
1033             theRes->ConvertToShape(theShape, fill_nonZero);
1034         }
1035
1036         Path *originaux[1];
1037         originaux[0] = orig;
1038         theRes->ConvertToForme(res, 1, originaux);
1039
1040         delete theShape;
1041         delete theRes;
1042     }
1043
1044     sp_curve_unref(curve);
1045
1046     if (res->descr_cmd.size() <= 1)
1047     {
1048         // pas vraiment de points sur le resultat
1049         // donc il ne reste rien
1050         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
1051                          /* TODO: annotate */ "splivarot.cpp:1051");
1052         selection->clear();
1053
1054         delete res;
1055         delete orig;
1056         g_free(style);
1057         return;
1058     }
1059
1060     {
1061         gchar tstr[80];
1062
1063         tstr[79] = '\0';
1064
1065         repr = sp_repr_new("svg:path");
1066         repr->setAttribute("sodipodi:type", "inkscape:offset");
1067         sp_repr_set_svg_double(repr, "inkscape:radius", ( expand > 0
1068                                                           ? o_width
1069                                                           : expand < 0
1070                                                           ? -o_width
1071                                                           : 0 ));
1072
1073         str = res->svg_dump_path();
1074         repr->setAttribute("inkscape:original", str);
1075         g_free(str);
1076
1077         if ( updating ) {
1078             char const *id = SP_OBJECT(item)->repr->attribute("id");
1079             char const *uri = g_strdup_printf("#%s", id);
1080             repr->setAttribute("xlink:href", uri);
1081             g_free((void *) uri);
1082         } else {
1083             repr->setAttribute("inkscape:href", NULL);
1084         }
1085
1086         repr->setAttribute("style", style);
1087
1088         // add the new repr to the parent
1089         parent->appendChild(repr);
1090
1091         // move to the saved position
1092         repr->setPosition(pos > 0 ? pos : 0);
1093
1094         SPItem *nitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1095
1096         if ( updating ) {
1097             // on conserve l'original
1098             // we reapply the transform to the original (offset will feel it)
1099             sp_item_write_transform(item, SP_OBJECT_REPR(item), transform);
1100         } else {
1101             // delete original, apply the transform to the offset
1102             SP_OBJECT(item)->deleteObject(false);
1103             sp_item_write_transform(nitem, repr, transform);
1104         }
1105
1106         // The object just created from a temporary repr is only a seed.
1107         // We need to invoke its write which will update its real repr (in particular adding d=)
1108         SP_OBJECT(nitem)->updateRepr();
1109
1110         Inkscape::GC::release(repr);
1111
1112         selection->set(nitem);
1113     }
1114
1115     sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
1116                      /* TODO: annotate */ "splivarot.cpp:1116");
1117
1118     delete res;
1119     delete orig;
1120
1121     g_free(style);
1122 }
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135 void
1136 sp_selected_path_do_offset(bool expand, double prefOffset)
1137 {
1138     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1139
1140     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1141
1142     if (selection->isEmpty()) {
1143         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to inset/outset."));
1144         return;
1145     }
1146
1147     bool did = false;
1148
1149     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1150          items != NULL;
1151          items = items->next) {
1152
1153         SPItem *item = (SPItem *) items->data;
1154
1155         if (!SP_IS_SHAPE(item) && !SP_IS_TEXT(item))
1156             continue;
1157
1158         SPCurve *curve = NULL;
1159         if (SP_IS_SHAPE(item)) {
1160             curve = sp_shape_get_curve(SP_SHAPE(item));
1161             if (curve == NULL)
1162                 continue;
1163         }
1164         if (SP_IS_TEXT(item)) {
1165             curve = SP_TEXT(item)->getNormalizedBpath();
1166             if (curve == NULL)
1167                 continue;
1168         }
1169
1170         NR::Matrix const transform(item->transform);
1171
1172         sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1173
1174         gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1175
1176         float o_width, o_miter;
1177         JoinType o_join;
1178         ButtType o_butt;
1179
1180         {
1181             SPStyle *i_style = SP_OBJECT(item)->style;
1182             int jointype, captype;
1183
1184             jointype = i_style->stroke_linejoin.value;
1185             captype = i_style->stroke_linecap.value;
1186             o_width = i_style->stroke_width.computed;
1187
1188             switch (jointype) {
1189                 case SP_STROKE_LINEJOIN_MITER:
1190                     o_join = join_pointy;
1191                     break;
1192                 case SP_STROKE_LINEJOIN_ROUND:
1193                     o_join = join_round;
1194                     break;
1195                 default:
1196                     o_join = join_straight;
1197                     break;
1198             }
1199
1200             switch (captype) {
1201                 case SP_STROKE_LINECAP_SQUARE:
1202                     o_butt = butt_square;
1203                     break;
1204                 case SP_STROKE_LINECAP_ROUND:
1205                     o_butt = butt_round;
1206                     break;
1207                 default:
1208                     o_butt = butt_straight;
1209                     break;
1210             }
1211
1212             o_width = prefOffset;
1213
1214             if (o_width < 0.1)
1215                 o_width = 0.1;
1216             o_miter = i_style->stroke_miterlimit.value * o_width;
1217         }
1218
1219         Path *orig = Path_for_item(item, false);
1220         if (orig == NULL) {
1221             g_free(style);
1222             sp_curve_unref(curve);
1223             continue;
1224         }
1225
1226         Path *res = new Path;
1227         res->SetBackData(false);
1228
1229         {
1230             Shape *theShape = new Shape;
1231             Shape *theRes = new Shape;
1232
1233             orig->ConvertWithBackData(0.03);
1234             orig->Fill(theShape, 0);
1235
1236             SPCSSAttr *css = sp_repr_css_attr(SP_OBJECT_REPR(item), "style");
1237             gchar const *val = sp_repr_css_property(css, "fill-rule", NULL);
1238             if (val && strcmp(val, "nonzero") == 0)
1239             {
1240                 theRes->ConvertToShape(theShape, fill_nonZero);
1241             }
1242             else if (val && strcmp(val, "evenodd") == 0)
1243             {
1244                 theRes->ConvertToShape(theShape, fill_oddEven);
1245             }
1246             else
1247             {
1248                 theRes->ConvertToShape(theShape, fill_nonZero);
1249             }
1250
1251             // et maintenant: offset
1252             // methode inexacte
1253 /*                      Path *originaux[1];
1254                         originaux[0] = orig;
1255                         theRes->ConvertToForme(res, 1, originaux);
1256
1257                         if (expand) {
1258                         res->OutsideOutline(orig, 0.5 * o_width, o_join, o_butt, o_miter);
1259                         } else {
1260                         res->OutsideOutline(orig, -0.5 * o_width, o_join, o_butt, o_miter);
1261                         }
1262
1263                         orig->ConvertWithBackData(1.0);
1264                         orig->Fill(theShape, 0);
1265                         theRes->ConvertToShape(theShape, fill_positive);
1266                         originaux[0] = orig;
1267                         theRes->ConvertToForme(res, 1, originaux);
1268
1269                         if (o_width >= 0.5) {
1270                         //     res->Coalesce(1.0);
1271                         res->ConvertEvenLines(1.0);
1272                         res->Simplify(1.0);
1273                         } else {
1274                         //      res->Coalesce(o_width);
1275                         res->ConvertEvenLines(1.0*o_width);
1276                         res->Simplify(1.0 * o_width);
1277                         }    */
1278             // methode par makeoffset
1279
1280             if (expand)
1281             {
1282                 theShape->MakeOffset(theRes, o_width, o_join, o_miter);
1283             }
1284             else
1285             {
1286                 theShape->MakeOffset(theRes, -o_width, o_join, o_miter);
1287             }
1288             theRes->ConvertToShape(theShape, fill_positive);
1289
1290             res->Reset();
1291             theRes->ConvertToForme(res);
1292
1293             if (o_width >= 1.0)
1294             {
1295                 res->ConvertEvenLines(1.0);
1296                 res->Simplify(1.0);
1297             }
1298             else
1299             {
1300                 res->ConvertEvenLines(1.0*o_width);
1301                 res->Simplify(1.0 * o_width);
1302             }
1303
1304             delete theShape;
1305             delete theRes;
1306         }
1307
1308         did = true;
1309
1310         sp_curve_unref(curve);
1311         // remember the position of the item
1312         gint pos = SP_OBJECT_REPR(item)->position();
1313         // remember parent
1314         Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1315         // remember id
1316         char const *id = SP_OBJECT_REPR(item)->attribute("id");
1317
1318         selection->remove(item);
1319         SP_OBJECT(item)->deleteObject(false);
1320
1321         if (res->descr_cmd.size() > 1) { // if there's 0 or 1 node left, drop this path altogether
1322
1323             gchar tstr[80];
1324
1325             tstr[79] = '\0';
1326
1327             Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1328
1329             repr->setAttribute("style", style);
1330
1331             gchar *str = res->svg_dump_path();
1332             repr->setAttribute("d", str);
1333             g_free(str);
1334
1335             // add the new repr to the parent
1336             parent->appendChild(repr);
1337
1338             // move to the saved position
1339             repr->setPosition(pos > 0 ? pos : 0);
1340
1341             SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1342
1343             // reapply the transform
1344             sp_item_write_transform(newitem, repr, transform);
1345
1346             repr->setAttribute("id", id);
1347
1348             selection->add(repr);
1349
1350             Inkscape::GC::release(repr);
1351         }
1352
1353         delete orig;
1354         delete res;
1355     }
1356
1357     if (did) {
1358         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
1359                          /* TODO: annotate */ "splivarot.cpp:1359");
1360     } else {
1361         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to inset/outset in the selection."));
1362         return;
1363     }
1364 }
1365
1366
1367
1368 //return true if we changed something, else false
1369 bool
1370 sp_selected_path_simplify_item(SPDesktop *desktop, Inkscape::Selection *selection, SPItem *item,
1371                  float threshold,  bool justCoalesce,
1372                  float angleLimit, bool breakableAngles,
1373                  gdouble size,     bool modifySelection)
1374 {
1375     if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1376         return false;
1377
1378     //If this is a group, do the children instead
1379     if (SP_IS_GROUP(item)) {
1380
1381         bool didSomething = false;
1382
1383         for ( GSList *children = sp_item_group_item_list(SP_GROUP(item));
1384                  children  ; children = children->next) {
1385
1386             SPItem *child = (SPItem *) children->data;
1387             didSomething |= sp_selected_path_simplify_item(desktop, selection, child, threshold, justCoalesce,
1388                    angleLimit, breakableAngles, size, false);
1389         }
1390
1391         return didSomething;
1392     }
1393
1394
1395     SPCurve *curve = NULL;
1396
1397     if (SP_IS_SHAPE(item)) {
1398         curve = sp_shape_get_curve(SP_SHAPE(item));
1399         if (!curve)
1400             return false;
1401     }
1402
1403     if (SP_IS_TEXT(item)) {
1404         curve = SP_TEXT(item)->getNormalizedBpath();
1405         if (!curve)
1406             return false;
1407     }
1408
1409     // save the transform, to re-apply it after simplification
1410     NR::Matrix const transform(item->transform);
1411
1412     /*
1413        reset the transform, effectively transforming the item by transform.inverse();
1414        this is necessary so that the item is transformed twice back and forth,
1415        allowing all compensations to cancel out regardless of the preferences
1416     */
1417     sp_item_write_transform(item, SP_OBJECT_REPR(item), NR::identity());
1418
1419     gchar *style = g_strdup(SP_OBJECT_REPR(item)->attribute("style"));
1420
1421     Path *orig = Path_for_item(item, false);
1422     if (orig == NULL) {
1423         g_free(style);
1424         sp_curve_unref(curve);
1425         return false;
1426     }
1427
1428     sp_curve_unref(curve);
1429     // remember the position of the item
1430     gint pos = SP_OBJECT_REPR(item)->position();
1431     // remember parent
1432     Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
1433     // remember id
1434     char const *id = SP_OBJECT_REPR(item)->attribute("id");
1435
1436     //If a group was selected, to not change the selection list
1437     if (modifySelection)
1438         selection->remove(item);
1439
1440     SP_OBJECT(item)->deleteObject(false);
1441
1442     if ( justCoalesce ) {
1443         orig->Coalesce(threshold * size);
1444     } else {
1445         orig->ConvertEvenLines(threshold * size);
1446         orig->Simplify(threshold * size);
1447     }
1448
1449     Inkscape::XML::Node *repr = sp_repr_new("svg:path");
1450
1451     repr->setAttribute("style", style);
1452
1453     gchar *str = orig->svg_dump_path();
1454     repr->setAttribute("d", str);
1455     g_free(str);
1456
1457     // restore id
1458     repr->setAttribute("id", id);
1459
1460     // add the new repr to the parent
1461     parent->appendChild(repr);
1462
1463     // move to the saved position
1464     repr->setPosition(pos > 0 ? pos : 0);
1465
1466     SPItem *newitem = (SPItem *) sp_desktop_document(desktop)->getObjectByRepr(repr);
1467
1468     // reapply the transform
1469     sp_item_write_transform(newitem, repr, transform);
1470
1471     //If we are not in a selected group
1472     if (modifySelection)
1473         selection->add(repr);
1474
1475     Inkscape::GC::release(repr);
1476
1477     // clean up
1478     if (orig) delete orig;
1479
1480     return true;
1481 }
1482
1483
1484 void
1485 sp_selected_path_simplify_selection(float threshold, bool justCoalesce,
1486                        float angleLimit, bool breakableAngles)
1487 {
1488     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
1489
1490     Inkscape::Selection *selection = sp_desktop_selection(desktop);
1491
1492     if (selection->isEmpty()) {
1493         desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1494                          _("Select <b>path(s)</b> to simplify."));
1495         return;
1496     }
1497
1498     // remember selection size
1499     NR::Rect bbox = selection->bounds();
1500     gdouble size  = L2(bbox.dimensions());
1501
1502     bool didSomething = false;
1503
1504     //Loop through all of the items in the selection
1505     for (GSList *items = g_slist_copy((GSList *) selection->itemList());
1506                         items != NULL; items = items->next) {
1507
1508         SPItem *item = (SPItem *) items->data;
1509
1510         if (!(SP_IS_GROUP(item) || SP_IS_SHAPE(item) || SP_IS_TEXT(item)))
1511             continue;
1512
1513         didSomething |= sp_selected_path_simplify_item(desktop, selection, item,
1514                            threshold, justCoalesce, angleLimit, breakableAngles, size, true);
1515     }
1516
1517
1518     if (didSomething)
1519         sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_SIMPLIFY,
1520                          /* TODO: annotate */ "splivarot.cpp:1520");
1521     else
1522         desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
1523
1524 }
1525
1526
1527 // globals for keeping track of accelerated simplify
1528 static double previousTime      = 0.0;
1529 static gdouble simplifyMultiply = 1.0;
1530
1531 void
1532 sp_selected_path_simplify(void)
1533 {
1534     gdouble simplifyThreshold =
1535         prefs_get_double_attribute("options.simplifythreshold", "value", 0.003);
1536     bool simplifyJustCoalesce =
1537         (bool) prefs_get_int_attribute("options.simplifyjustcoalesce", "value", 0);
1538
1539     //Get the current time
1540     GTimeVal currentTimeVal;
1541     g_get_current_time(&currentTimeVal);
1542     double currentTime = currentTimeVal.tv_sec * 1000000 +
1543                 currentTimeVal.tv_usec;
1544
1545     //Was the previous call to this function recent? (<0.5 sec)
1546     if (previousTime > 0.0 && currentTime - previousTime < 500000.0) {
1547
1548         // add to the threshold 1/2 of its original value
1549         simplifyMultiply  += 0.5;
1550         simplifyThreshold *= simplifyMultiply;
1551
1552     } else {
1553         // reset to the default
1554         simplifyMultiply = 1;
1555     }
1556
1557     //remember time for next call
1558     previousTime = currentTime;
1559
1560     //g_print("%g\n", simplify_threshold);
1561
1562     //Make the actual call
1563     sp_selected_path_simplify_selection(simplifyThreshold,
1564                       simplifyJustCoalesce, 0.0, false);
1565 }
1566
1567
1568
1569 // fonctions utilitaires
1570
1571 bool
1572 Ancetre(Inkscape::XML::Node *a, Inkscape::XML::Node *who)
1573 {
1574     if (who == NULL || a == NULL)
1575         return false;
1576     if (who == a)
1577         return true;
1578     return Ancetre(sp_repr_parent(a), who);
1579 }
1580
1581 Path *
1582 Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
1583 {
1584     SPCurve *curve;
1585
1586     if (!item)
1587         return NULL;
1588
1589     if (SP_IS_SHAPE(item))
1590     {
1591         curve = sp_shape_get_curve(SP_SHAPE(item));
1592     }
1593     else if (SP_IS_TEXT(item))
1594     {
1595         curve = SP_TEXT(item)->getNormalizedBpath();
1596     }
1597     else
1598     {
1599         curve = NULL;
1600     }
1601
1602     if (!curve)
1603         return NULL;
1604     NArtBpath *bpath = SP_CURVE_BPATH(curve);
1605     if (bpath == NULL)
1606         return NULL;
1607
1608     if ( doTransformation ) {
1609         if (transformFull)
1610             bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), sp_item_i2doc_affine(item));
1611         else
1612             bpath = nr_artpath_affine(SP_CURVE_BPATH(curve), item->transform);
1613         sp_curve_unref(curve);
1614         curve=NULL;
1615     } else {
1616         bpath=SP_CURVE_BPATH(curve);
1617     }
1618
1619     Path *dest = new Path;
1620     dest->SetBackData(false);
1621     {
1622         int   i;
1623         bool  closed = false;
1624         float lastX  = 0.0;
1625         float lastY  = 0.0;
1626
1627         for (i = 0; bpath[i].code != NR_END; i++) {
1628             switch (bpath[i].code) {
1629                 case NR_LINETO:
1630                     lastX = bpath[i].x3;
1631                     lastY = bpath[i].y3;
1632                     {
1633                         NR::Point tmp(lastX, lastY);
1634                         dest->LineTo(tmp);
1635                     }
1636                     break;
1637
1638                 case NR_CURVETO:
1639                 {
1640                     NR::Point tmp, tms, tme;
1641                     tmp[0]=bpath[i].x3;
1642                     tmp[1]=bpath[i].y3;
1643                     tms[0]=3 * (bpath[i].x1 - lastX);
1644                     tms[1]=3 * (bpath[i].y1 - lastY);
1645                     tme[0]=3 * (bpath[i].x3 - bpath[i].x2);
1646                     tme[1]=3 * (bpath[i].y3 - bpath[i].y2);
1647                     dest->CubicTo(tmp,tms,tme);
1648                 }
1649                 lastX = bpath[i].x3;
1650                 lastY = bpath[i].y3;
1651                 break;
1652
1653                 case NR_MOVETO_OPEN:
1654                 case NR_MOVETO:
1655                     if (closed)
1656                         dest->Close();
1657                     closed = (bpath[i].code == NR_MOVETO);
1658                     lastX = bpath[i].x3;
1659                     lastY = bpath[i].y3;
1660                     {
1661                         NR::Point  tmp(lastX, lastY);
1662                         dest->MoveTo(tmp);
1663                     }
1664                     break;
1665                 default:
1666                     break;
1667             }
1668         }
1669         if (closed)
1670             dest->Close();
1671     }
1672
1673     if ( doTransformation ) {
1674         if ( bpath ) g_free(bpath);
1675     } else {
1676         sp_curve_unref(curve);
1677     }
1678     return dest;
1679 }
1680
1681 NR::Maybe<Path::cut_position> get_nearest_position_on_Path(Path *path, NR::Point p)
1682 {
1683     //get nearest position on path
1684     Path::cut_position pos = path->PointToCurvilignPosition(p);
1685     return pos;
1686 }
1687
1688 NR::Point get_point_on_Path(Path *path, int piece, double t)
1689 {
1690     NR::Point p;
1691     path->PointAt(piece, t, p);
1692     return p;
1693 }
1694
1695
1696 /*
1697   Local Variables:
1698   mode:c++
1699   c-file-style:"stroustrup"
1700   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1701   indent-tabs-mode:nil
1702   fill-column:99
1703   End:
1704 */
1705 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :