synfig-studio/src/gtkmm/duckmatic.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file duckmatic.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32 #include <fstream>
  33 #include <iostream>
  34 #include <algorithm>
  35
  36 #include <ETL/hermite>
  37
  38 #include "duckmatic.h"
  39 #include <synfigapp/value_desc.h>
  40 #include <synfig/general.h>
  41 #include <synfig/paramdesc.h>
  42 #include <synfig/valuenode_timedswap.h>
  43 #include <synfig/valuenode_animated.h>
  44 #include <synfig/valuenode_composite.h>
  45 #include <synfig/valuenode_scale.h>
  46 #include <synfig/valuenode_bline.h>
  47 #include <synfig/valuenode_blinecalctangent.h>
  48 #include <synfig/valuenode_blinecalcvertex.h>
  49 #include <synfig/valuenode_blinecalcwidth.h>
  50
  51 #include <synfig/curve_helper.h>
  52
  53 #include <sigc++/retype_return.h>
  54 #include <sigc++/retype.h>
  55 #include <sigc++/hide.h>
  56 #include <sigc++/bind.h>
  57
  58 #include "canvasview.h"
  59
  60 #include "onemoment.h"
  61
  62 #include "general.h"
  63
  64 #endif
  65
  66 /* === U S I N G =========================================================== */
  67
  68 using namespace std;
  69 using namespace etl;
  70 using namespace synfig;
  71 using namespace studio;
  72
  73 /* === M A C R O S ========================================================= */
  74
  75 /* 0.33333333333333333 makes for nice short tangent handles,
  76    1.0 makes them draw as their real length */
  77 #define TANGENT_HANDLE_SCALE 0.33333333333333333
  78
  79 /* leave this alone or the bezier won't lie on top of the bline */
  80 #define TANGENT_BEZIER_SCALE 0.33333333333333333
  81
  82 /* === G L O B A L S ======================================================= */
  83
  84 /* === P R O C E D U R E S ================================================= */
  85
  86 /* === M E T H O D S ======================================================= */
  87
  88 /* === E N T R Y P O I N T ================================================= */
  89
  90 Duckmatic::Duckmatic():
  91         type_mask(Duck::TYPE_ALL-Duck::TYPE_WIDTH),
  92         grid_snap(false),
  93         guide_snap(false),
  94         grid_size(1.0/4.0,1.0/4.0),
  95         show_persistent_strokes(true)
  96 {
  97         axis_lock=false;
  98         drag_offset_=Point(0,0);
  99         clear_duck_dragger();
 100 }
 101
 102 Duckmatic::~Duckmatic()
 103 {
 104         clear_ducks();
 105
 106         if (Duck::duck_count)
 107                 synfig::error("%d ducks not yet deleted!", Duck::duck_count);
 108
 109         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
 110                 synfig::info("Duckmatic::~Duckmatic(): Deleted");
 111 }
 112
 113 void
 114 Duckmatic::clear_ducks()
 115 {
 116         duck_data_share_map.clear();
 117         duck_map.clear();
 118
 119         //duck_list_.clear();
 120         bezier_list_.clear();
 121         stroke_list_.clear();
 122
 123         if(show_persistent_strokes)
 124                 stroke_list_=persistent_stroke_list_;
 125 }
 126
 127 //! Returns \a true if the given duck is currently selected
 128 bool
 129 Duckmatic::duck_is_selected(const etl::handle<Duck> &duck)const
 130 {
 131         return duck && selected_ducks.count(duck->get_guid());
 132 }
 133
 134 void
 135 Duckmatic::set_grid_size(const synfig::Vector &s)
 136 {
 137         if(grid_size!=s)
 138         {
 139                 grid_size=s;
 140                 signal_grid_changed();
 141         }
 142 }
 143
 144 void
 145 Duckmatic::set_grid_snap(bool x)
 146 {
 147         if(grid_snap!=x)
 148         {
 149                 grid_snap=x;
 150                 signal_grid_changed();
 151         }
 152 }
 153
 154 void
 155 Duckmatic::set_guide_snap(bool x)
 156 {
 157         if(guide_snap!=x)
 158         {
 159                 guide_snap=x;
 160                 signal_grid_changed();
 161         }
 162 }
 163
 164 Duckmatic::GuideList::iterator
 165 Duckmatic::find_guide_x(synfig::Point pos, float radius)
 166 {
 167         GuideList::iterator iter,best(guide_list_x_.end());
 168         float dist(radius);
 169         for(iter=guide_list_x_.begin();iter!=guide_list_x_.end();++iter)
 170         {
 171                 float amount(abs(*iter-pos[0]));
 172                 if(amount<dist)
 173                 {
 174                         dist=amount;
 175                         best=iter;
 176                 }
 177         }
 178         return best;
 179 }
 180
 181 Duckmatic::GuideList::iterator
 182 Duckmatic::find_guide_y(synfig::Point pos, float radius)
 183 {
 184         GuideList::iterator iter,best(guide_list_y_.end());
 185         float dist(radius);
 186         for(iter=guide_list_y_.begin();iter!=guide_list_y_.end();++iter)
 187         {
 188                 float amount(abs(*iter-pos[1]));
 189                 if(amount<=dist)
 190                 {
 191                         dist=amount;
 192                         best=iter;
 193                 }
 194         }
 195         return best;
 196 }
 197
 198 void
 199 Duckmatic::clear_selected_ducks()
 200 {
 201         selected_ducks.clear();
 202         signal_duck_selection_changed_();
 203 }
 204
 205 etl::handle<Duckmatic::Duck>
 206 Duckmatic::get_selected_duck()const
 207 {
 208         if(selected_ducks.empty() || duck_map.empty())
 209                 return 0;
 210         return duck_map.find(*selected_ducks.begin())->second;
 211 }
 212
 213 void
 214 Duckmatic::refresh_selected_ducks()
 215 {
 216 /*
 217         std::set<etl::handle<Duck> >::iterator iter;
 218         std::set<etl::handle<Duck> > new_set;
 219         if(duck_list().empty())
 220         {
 221                 selected_duck_list.clear();
 222                 signal_duck_selection_changed_();
 223                 return;
 224         }
 225
 226         for(iter=selected_duck_list.begin();iter!=selected_duck_list.end();++iter)
 227         {
 228                 etl::handle<Duck> similar(find_similar_duck(*iter));
 229                 if(similar)
 230                 {
 231                         new_set.insert(similar);
 232                 }
 233         }
 234         selected_duck_list=new_set;
 235 */
 236         GUIDSet old_set(selected_ducks);
 237         GUIDSet::const_iterator iter;
 238
 239         for(iter=old_set.begin();iter!=old_set.end();++iter)
 240         {
 241                 if(duck_map.count(*iter)==0)
 242                         selected_ducks.erase(*iter);
 243         }
 244
 245         signal_duck_selection_changed_();
 246 }
 247
 248 bool
 249 Duckmatic::is_duck_group_selectable(const etl::handle<Duck>& x)const
 250 {
 251         const Type type(get_type_mask());
 252
 253         if (((x->get_type() && (!(type & x->get_type()))) ||
 254                  !x->get_editable()))
 255                 return false;
 256
 257         synfigapp::ValueDesc value_desc(x->get_value_desc());
 258         if(value_desc.parent_is_layer_param() && type & Duck::TYPE_POSITION)
 259         {
 260                 Layer::Handle layer(value_desc.get_layer());
 261                 String layer_name(layer->get_name());
 262
 263                 if (layer_name == "outline" || layer_name == "region" || layer_name == "plant" ||
 264                         layer_name == "polygon" || layer_name == "curve_gradient")
 265                         return false;
 266
 267                 if((layer_name=="PasteCanvas"|| layer_name=="paste_canvas") &&
 268                    !layer->get_param("children_lock").get(bool()))
 269                         return false;
 270         }
 271         else if (value_desc.parent_is_value_node())
 272         {
 273                 if (ValueNode_BLineCalcVertex::Handle::cast_dynamic(value_desc.get_value_node()))
 274                         return false;
 275                 if (value_desc.parent_is_linkable_value_node())
 276                 {
 277                         LinkableValueNode::Handle parent_value_node(value_desc.get_parent_value_node());
 278                         if (ValueNode_Composite::Handle::cast_dynamic(parent_value_node))
 279                         {
 280                                 if (parent_value_node->get_type() == ValueBase::TYPE_BLINEPOINT &&
 281                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(
 282                                                 parent_value_node->get_link("point")))
 283                                         return false;
 284                         }
 285                         else if (ValueNode_BLine::Handle::cast_dynamic(parent_value_node))
 286                         {
 287                                 ValueNode_Composite::Handle composite(ValueNode_Composite::Handle::cast_dynamic(
 288                                                                                                                   value_desc.get_value_node()));
 289                                 if (composite &&
 290                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))
 291                                         return false;
 292                         }
 293                 }
 294         }
 295         return true;
 296 }
 297
 298 void
 299 Duckmatic::select_all_ducks()
 300 {
 301         DuckMap::const_iterator iter;
 302         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 303                 if(is_duck_group_selectable(iter->second))
 304                         select_duck(iter->second);
 305                 else
 306                         unselect_duck(iter->second);
 307 }
 308
 309 void
 310 Duckmatic::unselect_all_ducks()
 311 {
 312         DuckMap::const_iterator iter;
 313         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 314                 unselect_duck(iter->second);
 315 }
 316
 317 void
 318 Duckmatic::toggle_select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 319 {
 320         Vector vmin, vmax;
 321         vmin[0]=std::min(tl[0],br[0]);
 322         vmin[1]=std::min(tl[1],br[1]);
 323         vmax[0]=std::max(tl[0],br[0]);
 324         vmax[1]=std::max(tl[1],br[1]);
 325
 326         DuckMap::const_iterator iter;
 327         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 328         {
 329                 Point p(iter->second->get_trans_point());
 330                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1] &&
 331                    is_duck_group_selectable(iter->second))
 332                         toggle_select_duck(iter->second);
 333         }
 334 }
 335
 336 void
 337 Duckmatic::select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 338 {
 339         Vector vmin, vmax;
 340         vmin[0]=std::min(tl[0],br[0]);
 341         vmin[1]=std::min(tl[1],br[1]);
 342         vmax[0]=std::max(tl[0],br[0]);
 343         vmax[1]=std::max(tl[1],br[1]);
 344
 345 //      Type type(get_type_mask());
 346
 347         DuckMap::const_iterator iter;
 348         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 349         {
 350                 Point p(iter->second->get_trans_point());
 351                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1])
 352                 {
 353                         if(is_duck_group_selectable(iter->second))
 354                                 select_duck(iter->second);
 355                 }
 356         }
 357 }
 358
 359 int
 360 Duckmatic::count_selected_ducks()const
 361 {
 362         return selected_ducks.size();
 363 }
 364
 365 void
 366 Duckmatic::select_duck(const etl::handle<Duck> &duck)
 367 {
 368         if(duck)
 369         {
 370                 selected_ducks.insert(duck->get_guid());
 371                 signal_duck_selection_changed_();
 372         }
 373 }
 374
 375 DuckList
 376 Duckmatic::get_selected_ducks()const
 377 {
 378         DuckList ret;
 379         GUIDSet::const_iterator iter;
 380         const Type type(get_type_mask());
 381
 382         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 383         {
 384                 const DuckMap::const_iterator d_iter(duck_map.find(*iter));
 385
 386                 if(d_iter==duck_map.end())
 387                         continue;
 388
 389                 if(( d_iter->second->get_type() && (!(type & d_iter->second->get_type())) ) )
 390                         continue;
 391
 392                 ret.push_back(d_iter->second);
 393         }
 394         return ret;
 395 }
 396
 397 DuckList
 398 Duckmatic::get_duck_list()const
 399 {
 400         DuckList ret;
 401         DuckMap::const_iterator iter;
 402         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_POSITION) ret.push_back(iter->second);
 403         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_VERTEX  ) ret.push_back(iter->second);
 404         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_TANGENT ) ret.push_back(iter->second);
 405         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 406                 if (!(iter->second->get_type()&Duck::TYPE_POSITION) &&
 407                         !(iter->second->get_type()&Duck::TYPE_VERTEX) &&
 408                         !(iter->second->get_type()&Duck::TYPE_TANGENT))
 409                         ret.push_back(iter->second);
 410         return ret;
 411 }
 412
 413 void
 414 Duckmatic::unselect_duck(const etl::handle<Duck> &duck)
 415 {
 416         if(duck && selected_ducks.count(duck->get_guid()))
 417         {
 418                 selected_ducks.erase(duck->get_guid());
 419                 signal_duck_selection_changed_();
 420         }
 421 }
 422
 423 void
 424 Duckmatic::toggle_select_duck(const etl::handle<Duck> &duck)
 425 {
 426         if(duck_is_selected(duck))
 427                 unselect_duck(duck);
 428         else
 429                 select_duck(duck);
 430 }
 431
 432 void
 433 Duckmatic::translate_selected_ducks(const synfig::Vector& vector)
 434 {
 435         if(duck_dragger_)
 436                 duck_dragger_->duck_drag(this,vector);
 437 }
 438
 439 void
 440 Duckmatic::start_duck_drag(const synfig::Vector& offset)
 441 {
 442         if(duck_dragger_)
 443                 duck_dragger_->begin_duck_drag(this,offset);
 444
 445         //drag_offset_=offset;
 446         drag_offset_=find_duck(offset)->get_trans_point();
 447 }
 448
 449 bool
 450 Duckmatic::end_duck_drag()
 451 {
 452         if(duck_dragger_)
 453                 return duck_dragger_->end_duck_drag(this);
 454         return false;
 455 }
 456
 457 Point
 458 Duckmatic::snap_point_to_grid(const synfig::Point& x, float radius)const
 459 {
 460         Point ret(x);
 461
 462         GuideList::const_iterator guide_x,guide_y;
 463         bool has_guide_x(false), has_guide_y(false);
 464
 465         guide_x=find_guide_x(ret,radius);
 466         if(guide_x!=guide_list_x_.end())
 467                 has_guide_x=true;
 468
 469         guide_y=find_guide_y(ret,radius);
 470         if(guide_y!=guide_list_y_.end())
 471                 has_guide_y=true;
 472
 473         if(get_grid_snap())
 474         {
 475                 Point snap(
 476                         floor(ret[0]/get_grid_size()[0]+0.5)*get_grid_size()[0],
 477                         floor(ret[1]/get_grid_size()[1]+0.5)*get_grid_size()[1]);
 478
 479                 if(abs(snap[0]-ret[0])<=radius && (!has_guide_x || abs(snap[0]-ret[0])<=abs(*guide_x-ret[0])))
 480                         ret[0]=snap[0],has_guide_x=false;
 481                 if(abs(snap[1]-ret[1])<=radius && (!has_guide_y || abs(snap[1]-ret[1])<=abs(*guide_y-ret[1])))
 482                         ret[1]=snap[1],has_guide_y=false;
 483         }
 484
 485         if(guide_snap)
 486         {
 487                 if(has_guide_x)
 488                         ret[0]=*guide_x;
 489                 if(has_guide_y)
 490                         ret[1]=*guide_y;
 491         }
 492
 493         if(axis_lock)
 494         {
 495                 ret-=drag_offset_;
 496                 if(abs(ret[0])<abs(ret[1]))
 497                         ret[0]=0;
 498                 else
 499                         ret[1]=0;
 500                 ret+=drag_offset_;
 501         }
 502
 503         return ret;
 504 }
 505
 506 void
 507 DuckDrag_Translate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 508 {
 509         last_translate_=Vector(0,0);
 510         {
 511                 drag_offset_=duckmatic->find_duck(offset)->get_trans_point();
 512
 513                 snap=Vector(0,0);
 514         }
 515
 516         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 517         DuckList::const_iterator iter;
 518
 519         positions.clear();
 520         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 521         {
 522                 Point p((*iter)->get_trans_point());
 523                 positions.push_back(p);
 524         }
 525 }
 526
 527 bool
 528 DuckDrag_Translate::end_duck_drag(Duckmatic* duckmatic)
 529 {
 530         if(last_translate_.mag()>0.0001)
 531         {
 532                 duckmatic->signal_edited_selected_ducks();
 533                 return true;
 534         }
 535         else
 536         {
 537                 duckmatic->signal_user_click_selected_ducks(0);
 538                 return false;
 539         }
 540 }
 541
 542 void
 543 DuckDrag_Translate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 544 {
 545         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 546         DuckList::const_iterator iter;
 547
 548         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-drag_offset_);
 549         int i;
 550         Time time(duckmatic->get_time());
 551
 552         // drag the vertex and position ducks first
 553         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 554         {
 555                 etl::handle<Duck> duck(*iter);
 556                 if(duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 557                 {
 558                         duck->set_trans_point(positions[i]+vect);
 559
 560                         ValueNode_BLineCalcVertex::Handle bline_vertex;
 561                         ValueNode_Composite::Handle composite;
 562
 563                         if ((bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) ||
 564                                 ((composite = ValueNode_Composite::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) &&
 565                                  composite->get_type() == ValueBase::TYPE_BLINEPOINT &&
 566                                  (bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))))
 567                         {
 568                                 synfig::Point closest_point = duck->get_point();
 569                                 synfig::Real radius = 0.0;
 570                                 ValueNode_BLine::Handle bline = ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link("bline"));
 571                                 synfig::find_closest_point(
 572                                         (*bline)(time),
 573                                         duck->get_point(),
 574                                         radius,
 575                                         bline->get_loop(),
 576                                         &closest_point);
 577                                 duck->set_point(closest_point);
 578                         }
 579                 }
 580         }
 581
 582         // then drag the others
 583         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 584                 if ((*iter)->get_type() != Duck::TYPE_VERTEX && (*iter)->get_type() != Duck::TYPE_POSITION)
 585                         (*iter)->set_trans_point(positions[i]+vect);
 586
 587         // then patch up the tangents for the vertices we've moved
 588         DuckList duck_list(duckmatic->get_duck_list());
 589         for (iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter)
 590         {
 591                 etl::handle<Duck> duck(*iter);
 592                 if (duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 593                 {
 594                         ValueNode_BLineCalcVertex::Handle bline_vertex;
 595                         ValueNode_Composite::Handle composite;
 596
 597                         if ((bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) ||
 598                                 ((composite = ValueNode_Composite::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) &&
 599                                  composite->get_type() == ValueBase::TYPE_BLINEPOINT &&
 600                                  (bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))))
 601                         {
 602                                 synfig::Real radius = 0.0;
 603                                 ValueNode_BLine::Handle bline(ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link("bline")));
 604                                 Real amount = synfig::find_closest_point((*bline)(time), duck->get_point(), radius, bline->get_loop());
 605
 606                                 ValueNode::Handle vertex_amount_value_node(bline_vertex->get_link("amount"));
 607
 608                                 DuckList::iterator iter;
 609                                 for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 610                                 {
 611                                         ValueNode::Handle duck_value_node((*iter)->get_value_desc().get_value_node());
 612                                         if (ValueNode_BLineCalcTangent::Handle bline_tangent = ValueNode_BLineCalcTangent::Handle::cast_dynamic(duck_value_node))
 613                                         {
 614                                                 if (bline_tangent->get_link("amount") == vertex_amount_value_node)
 615                                                 {
 616                                                         switch (bline_tangent->get_type())
 617                                                         {
 618                                                         case ValueBase::TYPE_ANGLE:
 619                                                         {
 620                                                                 Angle angle((*bline_tangent)(time, amount).get(Angle()));
 621                                                                 (*iter)->set_point(Point(Angle::cos(angle).get(), Angle::sin(angle).get()));
 622                                                                 break;
 623                                                         }
 624                                                         case ValueBase::TYPE_REAL:
 625                                                                 (*iter)->set_point(Point((*bline_tangent)(time, amount).get(Real()), 0));
 626                                                                 break;
 627                                                         case ValueBase::TYPE_VECTOR:
 628                                                                 (*iter)->set_point((*bline_tangent)(time, amount).get(Vector()));
 629                                                                 break;
 630                                                         default:
 631                                                                 break;
 632                                                         }
 633                                                 }
 634                                         }
 635                                         else if (ValueNode_BLineCalcWidth::Handle bline_width = ValueNode_BLineCalcWidth::Handle::cast_dynamic(duck_value_node))
 636                                         {
 637                                                 if (bline_width->get_link("amount") == vertex_amount_value_node)
 638                                                         (*iter)->set_point(Point((*bline_width)(time, amount).get(Real()), 0));
 639                                         }
 640                                 }
 641                         }
 642                 }
 643         }
 644
 645         last_translate_=vect;
 646 }
 647
 648 void
 649 Duckmatic::signal_edited_selected_ducks()
 650 {
 651         const DuckList ducks(get_selected_ducks());
 652         DuckList::const_iterator iter;
 653
 654         synfig::GUIDSet old_set(selected_ducks);
 655
 656         // If we have more than 20 things to move, then display
 657         // something to explain that it may take a moment
 658         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 659
 660         // Go ahead and call everyone's signals
 661         for(iter=ducks.begin();iter!=ducks.end();++iter)
 662         {
 663                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 664                 {
 665                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 666                         {
 667                                 selected_ducks=old_set;
 668                                 throw String("Bad edit");
 669                         }
 670                 }
 671                 else if (App::restrict_radius_ducks &&
 672                                  (*iter)->is_radius())
 673                 {
 674                         Point point((*iter)->get_point());
 675                         bool changed = false;
 676
 677                         if (point[0] < 0)
 678                         {
 679                                 point[0] = 0;
 680                                 changed = true;
 681                         }
 682                         if (point[1] < 0)
 683                         {
 684                                 point[1] = 0;
 685                                 changed = true;
 686                         }
 687
 688                         if (changed) (*iter)->set_point(point);
 689
 690                         if(!(*iter)->signal_edited()(point))
 691                         {
 692                                 selected_ducks=old_set;
 693                                 throw String("Bad edit");
 694                         }
 695                 }
 696                 else
 697                 {
 698                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 699                         {
 700                                 selected_ducks=old_set;
 701                                 throw String("Bad edit");
 702                         }
 703                 }
 704         }
 705         selected_ducks=old_set;
 706 }
 707
 708 void
 709 Duckmatic::signal_user_click_selected_ducks(int button)
 710 {
 711         const DuckList ducks(get_selected_ducks());
 712         DuckList::const_iterator iter;
 713
 714         for(iter=ducks.begin();iter!=ducks.end();++iter)
 715         {
 716                 (*iter)->signal_user_click(button)();
 717         }
 718 }
 719
 720 void
 721 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 722 {
 723         //if(!duck_map.count(duck->get_guid()))
 724         {
 725                 if(duck_data_share_map.count(duck->get_data_guid()))
 726                 {
 727                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 728                 }
 729                 else
 730                 {
 731                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 732                         duck->set_shared_point(point);
 733                         duck_data_share_map[duck->get_data_guid()]=point;
 734                 }
 735
 736                 duck_map.insert(duck);
 737         }
 738
 739         last_duck_guid=duck->get_guid();
 740 }
 741
 742 void
 743 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 744 {
 745         bezier_list_.push_back(bezier);
 746 }
 747
 748 void
 749 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 750 {
 751         assert(stroke_point_list);
 752
 753         std::list<etl::handle<Stroke> >::iterator iter;
 754
 755         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 756         {
 757                 if((*iter)->stroke_data==stroke_point_list)
 758                         return;
 759         }
 760
 761         etl::handle<Stroke> stroke(new Stroke());
 762
 763         stroke->stroke_data=stroke_point_list;
 764         stroke->color=color;
 765
 766         stroke_list_.push_back(stroke);
 767 }
 768
 769 void
 770 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 771 {
 772         add_stroke(stroke_point_list,color);
 773         persistent_stroke_list_.push_back(stroke_list_.back());
 774 }
 775
 776 void
 777 Duckmatic::clear_persistent_strokes()
 778 {
 779         persistent_stroke_list_.clear();
 780 }
 781
 782 void
 783 Duckmatic::set_show_persistent_strokes(bool x)
 784 {
 785         if(x!=show_persistent_strokes)
 786         {
 787                 show_persistent_strokes=x;
 788                 if(x)
 789                         stroke_list_=persistent_stroke_list_;
 790                 else
 791                         stroke_list_.clear();
 792         }
 793 }
 794
 795 void
 796 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 797 {
 798         duck_map.erase(duck->get_guid());
 799 }
 800
 801 etl::handle<Duckmatic::Duck>
 802 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 803 {
 804         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 805         if(iter!=duck_map.end())
 806                 return iter->second;
 807         return 0;
 808
 809 /*      std::list<handle<Duck> >::reverse_iterator iter;
 810
 811         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 812         {
 813                 if(*iter!=duck && **iter==*duck)
 814                 {
 815                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 816                         return *iter;
 817                 }
 818         }
 819         return 0;
 820 */
 821 }
 822
 823 etl::handle<Duckmatic::Duck>
 824 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 825 {
 826         etl::handle<Duck> similar(find_similar_duck(duck));
 827         if(!similar)
 828         {
 829                 add_duck(duck);
 830                 return duck;
 831         }
 832         return similar;
 833 }
 834
 835 void
 836 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 837 {
 838         std::list<handle<Bezier> >::iterator iter;
 839
 840         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 841         {
 842                 if(*iter==bezier)
 843                 {
 844                         bezier_list_.erase(iter);
 845                         return;
 846                 }
 847         }
 848         synfig::warning("Unable to find bezier to erase!");
 849 }
 850
 851 etl::handle<Duckmatic::Duck>
 852 Duckmatic::last_duck()const
 853 {
 854         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 855         if(iter!=duck_map.end())
 856                 return iter->second;
 857         return 0;
 858 }
 859
 860 etl::handle<Duckmatic::Bezier>
 861 Duckmatic::last_bezier()const
 862 {
 863         return bezier_list_.back();
 864 }
 865
 866 etl::handle<Duckmatic::Duck>
 867 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 868 {
 869         if(radius==0)radius=10000000;
 870
 871         if(type==Duck::TYPE_DEFAULT)
 872                 type=get_type_mask();
 873
 874         Real closest(10000000);
 875         etl::handle<Duck> ret;
 876
 877         DuckMap::const_iterator iter;
 878
 879         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 880         {
 881                 const Duck::Handle& duck(iter->second);
 882
 883                 if(duck->get_ignore() ||
 884                    (duck->get_type() && !(type & duck->get_type())))
 885                         continue;
 886
 887                 Real dist((duck->get_trans_point()-point).mag_squared());
 888
 889                 if(duck->get_type()&Duck::TYPE_VERTEX)
 890                         dist*=1.0001;
 891                 else if(duck->get_type()&Duck::TYPE_TANGENT && duck->get_scalar()>0)
 892                         dist*=1.00005;
 893                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 894                         dist*=0.9999;
 895
 896                 if(dist<=closest)
 897                 {
 898                         closest=dist;
 899                         ret=duck;
 900                 }
 901         }
 902
 903         if(radius==0 || closest<radius*radius)
 904                 return ret;
 905
 906         return 0;
 907 }
 908
 909 etl::handle<Duckmatic::Bezier>
 910 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 911 {
 912         return find_bezier(point,radius,radius,location);
 913 }
 914
 915 etl::handle<Duckmatic::Bezier>
 916 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 917 {
 918         if(radius==0)radius=10000000;
 919         Real closest(10000000);
 920         etl::handle<Bezier> ret;
 921
 922         bezier<Point>   curve;
 923
 924         Real    d,step;
 925         float   time = 0;
 926         float   best_time = 0;
 927
 928         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 929         {
 930                 curve[0] = (*iter)->p1->get_trans_point();
 931                 curve[1] = (*iter)->c1->get_trans_point();
 932                 curve[2] = (*iter)->c2->get_trans_point();
 933                 curve[3] = (*iter)->p2->get_trans_point();
 934                 curve.sync();
 935
 936 #if 0
 937                 // I don't know why this doesn't work
 938                 time=curve.find_closest(pos,6);
 939                 d=((curve(time)-pos).mag_squared());
 940
 941 #else
 942                 //set the step size based on the size of the picture
 943                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 944
 945                 step = d/(2*scale); //want to make the distance between lines happy
 946
 947                 step = max(step,0.01); //100 samples should be plenty
 948                 step = min(step,0.1); //10 is minimum
 949
 950                 d = find_closest(curve,pos,step,&closest,&time);
 951 #endif
 952
 953                 if(d < closest)
 954                 {
 955                         closest = d;
 956                         ret = *iter;
 957                         best_time=time;
 958                 }
 959         }
 960
 961         if(closest < radius*radius)
 962         {
 963                 if(location)
 964                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 965
 966                 return ret;
 967         }
 968
 969         return 0;
 970 }
 971
 972 bool
 973 Duckmatic::save_sketch(const synfig::String& filename)const
 974 {
 975         ChangeLocale change_locale(LC_NUMERIC, "C");
 976         std::ofstream file(filename.c_str());
 977
 978         if(!file)return false;
 979
 980         file<<"SKETCH"<<endl;
 981
 982         std::list<etl::handle<Stroke> >::const_iterator iter;
 983
 984         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 985         {
 986                 file<<"C "
 987                         <<(*iter)->color.get_r()<<' '
 988                         <<(*iter)->color.get_g()<<' '
 989                         <<(*iter)->color.get_b()
 990                 <<endl;
 991                 std::list<synfig::Point>::const_iterator viter;
 992                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 993                 {
 994                         file<<"V "
 995                                 <<(*viter)[0]<<' '
 996                                 <<(*viter)[1]
 997                         <<endl;
 998                 }
 999         }
1000         if(!file)return false;
1001         sketch_filename_=filename;
1002         signal_sketch_saved_();
1003         return true;
1004 }
1005
1006 bool
1007 Duckmatic::load_sketch(const synfig::String& filename)
1008 {
1009         ChangeLocale change_locale(LC_NUMERIC, "C");
1010         std::ifstream file(filename.c_str());
1011
1012         if(!file)
1013                 return false;
1014
1015         std::string line;
1016         getline(file,line);
1017
1018         if(line!="SKETCH")
1019         {
1020                 synfig::error("Not a sketch");
1021                 return false;
1022         }
1023
1024         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
1025
1026         while(file)
1027         {
1028                 getline(file,line);
1029
1030                 if(line.empty())
1031                         continue;
1032
1033                 switch(line[0])
1034                 {
1035                 case 'C':
1036                 case 'c':
1037                         {
1038                                 stroke_data.spawn();
1039                                 float r,g,b;
1040                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
1041                                 {
1042                                         synfig::warning("Bad color line \"%s\"",line.c_str());
1043                                         r=0;g=0;b=0;
1044                                 }
1045                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
1046                         }
1047                         break;
1048                 case 'V':
1049                 case 'v':
1050                         if(!stroke_data)
1051                         {
1052                                 stroke_data.spawn();
1053                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
1054                         }
1055                         float x,y;
1056                         if(!strscanf(line,"V %f %f",&x, &y))
1057                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
1058                         else
1059                                 stroke_data->push_back(synfig::Vector(x,y));
1060                         break;
1061                 default:
1062                         synfig::warning("Unexpected sketch token '%c'",line[0]);
1063                         break;
1064                 }
1065         }
1066
1067         sketch_filename_=filename;
1068         return true;
1069 }
1070
1071 Duckmatic::Push::Push(Duckmatic *duckmatic_):
1072         duckmatic_(duckmatic_)
1073 {
1074         duck_map=duckmatic_->duck_map;
1075         bezier_list_=duckmatic_->bezier_list_;
1076         duck_data_share_map=duckmatic_->duck_data_share_map;
1077         stroke_list_=duckmatic_->stroke_list_;
1078         duck_dragger_=duckmatic_->duck_dragger_;
1079         needs_restore=true;
1080 }
1081
1082 Duckmatic::Push::~Push()
1083 {
1084         if(needs_restore)
1085                 restore();
1086 }
1087
1088 void
1089 Duckmatic::Push::restore()
1090 {
1091         duckmatic_->duck_map=duck_map;
1092         duckmatic_->bezier_list_=bezier_list_;
1093         duckmatic_->duck_data_share_map=duck_data_share_map;
1094         duckmatic_->stroke_list_=stroke_list_;
1095         duckmatic_->duck_dragger_=duck_dragger_;
1096         needs_restore=false;
1097 }
1098
1099 inline String guid_string(const synfigapp::ValueDesc& x)
1100 {
1101         if(x.parent_is_layer_param())
1102                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1103         //if(x.is_value_node())
1104                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1105 }
1106
1107 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1108 {
1109         synfig::GUID ret(0);
1110
1111         if(x.parent_is_layer_param())
1112         {
1113                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1114         }
1115         else
1116         {
1117                 ret=x.get_value_node()->get_guid();
1118         }
1119
1120         ret^=transform_stack.get_guid();
1121         return ret;
1122 }
1123
1124 /*
1125 Duck::Handle
1126 Duckmatic::create_duck_from(const synfigapp::ValueDesc& value_desc,etl::handle<CanvasView> canvas_view, const synfig::TransformStack& transform_stack, int modifier, synfig::ParamDesc *param_desc)
1127 {
1128         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1129         etl::handle<Duck> duck=new Duck();
1130
1131         return duck;
1132 }
1133 */
1134
1135 bool
1136 Duckmatic::add_to_ducks(const synfigapp::ValueDesc& value_desc,etl::handle<CanvasView> canvas_view, const synfig::TransformStack& transform_stack, synfig::ParamDesc *param_desc, int multiple)
1137 {
1138         ValueBase::Type type=value_desc.get_value_type();
1139 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1140         switch(type)
1141         {
1142         case ValueBase::TYPE_REAL:
1143
1144                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1145                 {
1146                         etl::handle<Duck> duck=new Duck();
1147                         duck->set_transform_stack(transform_stack);
1148                         duck->set_radius(true);
1149                         duck->set_type(Duck::TYPE_RADIUS);
1150
1151                         // put the duck on the right hand side of the center
1152                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1153                         duck->set_name(guid_string(value_desc));
1154                         if(value_desc.is_value_node())
1155                         {
1156                                 // If the ValueNode can be directly manipulated,
1157                                 // then set it as so.
1158                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1159                         }
1160                         else
1161                         {
1162                                 duck->set_editable(true);
1163                         }
1164
1165                         if(param_desc && param_desc!=REAL_COOKIE)
1166                         {
1167                                 if(!param_desc->get_origin().empty())
1168                                 {
1169                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1170                                         /*
1171                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1172                                         */
1173                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1174                                         duck->set_origin(last_duck());
1175                                 }
1176                                 duck->set_scalar(param_desc->get_scalar());
1177                         }
1178
1179                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1180                         duck->signal_edited().connect(
1181                                 sigc::bind(
1182                                         sigc::mem_fun(
1183                                                 *canvas_view,
1184                                                 &studio::CanvasView::on_duck_changed),
1185                                         value_desc));
1186                         duck->set_value_desc(value_desc);
1187
1188                         duck->signal_user_click(2).connect(
1189                                 sigc::bind(
1190                                         sigc::bind(
1191                                                 sigc::bind(
1192                                                         sigc::mem_fun(
1193                                                                 *canvas_view,
1194                                                                 &studio::CanvasView::popup_param_menu),
1195                                                         false),
1196                                                 0.0f),
1197                                         value_desc));
1198
1199                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1200
1201                         add_duck(duck);
1202
1203                         return true;
1204                 }
1205                 break;
1206
1207         case ValueBase::TYPE_ANGLE:
1208
1209                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1210                 {
1211                         etl::handle<Duck> duck=new Duck();
1212                         duck->set_type(Duck::TYPE_ANGLE);
1213                         duck->set_transform_stack(transform_stack);
1214                         synfig::Angle angle;
1215
1216                         angle=value_desc.get_value(get_time()).get(Angle());
1217                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1218                         duck->set_name(guid_string(value_desc));
1219                         if(value_desc.is_value_node())
1220                         {
1221                                 ValueNode::Handle value_node=value_desc.get_value_node();
1222                                 //duck->set_name(strprintf("%x",value_node.get()));
1223
1224                                 // If the ValueNode can be directly manipulated,
1225                                 // then set it as so.
1226                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1227                         }
1228                         else
1229                         {
1230                                 //angle=(value_desc.get_value().get(Angle()));
1231                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1232                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1233                                 duck->set_editable(true);
1234                         }
1235
1236                         if(param_desc && param_desc!=REAL_COOKIE)
1237                         {
1238                                 if(!param_desc->get_origin().empty())
1239                                 {
1240                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1241                                         /*
1242                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1243                                         */
1244                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1245                                         duck->set_origin(last_duck());
1246                                 }
1247                                 duck->set_scalar(param_desc->get_scalar());
1248                         }
1249
1250                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1251                         duck->signal_edited_angle().clear();
1252                         duck->signal_edited_angle().connect(
1253                                 sigc::bind(
1254                                         sigc::mem_fun(
1255                                                 *canvas_view,
1256                                                 &studio::CanvasView::on_duck_angle_changed),
1257                                         value_desc));
1258                         duck->set_value_desc(value_desc);
1259
1260                         duck->signal_user_click(2).connect(
1261                                 sigc::bind(
1262                                         sigc::bind(
1263                                                 sigc::bind(
1264                                                         sigc::mem_fun(
1265                                                                 *canvas_view,
1266                                                                 &studio::CanvasView::popup_param_menu),
1267                                                         false),
1268                                                 0.0f),
1269                                         value_desc));
1270                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1271
1272                         add_duck(duck);
1273
1274                         return true;
1275                 }
1276                 break;
1277
1278         case ValueBase::TYPE_VECTOR:
1279                 {
1280                         etl::handle<Duck> duck=new Duck();
1281                         duck->set_transform_stack(transform_stack);
1282
1283                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1284                         duck->set_name(guid_string(value_desc));
1285                         if(value_desc.is_value_node())
1286                         {
1287                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1288
1289                                 // If the ValueNode can be directly manipulated,
1290                                 // then set it as so.
1291                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1292                         }
1293                         else
1294                         {
1295                                 //duck->set_point(value_desc.get_value().get(Point()));
1296                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1297                                 duck->set_editable(true);
1298                         }
1299
1300                         // If we were passed a parameter description
1301                         if(param_desc)
1302                         {
1303                                 if(!param_desc->get_connect().empty())
1304                                 {
1305                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1306                                         Duck::Handle connect_duck;
1307                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1308                                         {
1309                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1310                                         }
1311                                         else
1312                                         {
1313                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1314                                                 connect_duck=last_duck();
1315                                         }
1316                                         duck->set_connect_duck(connect_duck);
1317                                 }
1318                                 if(!param_desc->get_box().empty())
1319                                 {
1320                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1321                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1322                                         duck->set_box_duck(last_duck());
1323                                 }
1324
1325                                 // If we have an origin
1326                                 if(!param_desc->get_origin().empty())
1327                                 {
1328                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1329                                         /*
1330                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1331                                         */
1332                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1333                                         duck->set_origin(last_duck());
1334                                         duck->set_type(Duck::TYPE_VERTEX);
1335                                 }
1336                                 else
1337                                         duck->set_type(Duck::TYPE_POSITION);
1338
1339                                 duck->set_scalar(param_desc->get_scalar());
1340                         }
1341                         else
1342                                 duck->set_type(Duck::TYPE_POSITION);
1343
1344                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1345                         duck->signal_edited().connect(
1346                                 sigc::bind(
1347                                         sigc::mem_fun(
1348                                                 *canvas_view,
1349                                                 &studio::CanvasView::on_duck_changed),
1350                                         value_desc));
1351                         duck->set_value_desc(value_desc);
1352
1353                         duck->signal_user_click(2).connect(
1354                                 sigc::bind(
1355                                         sigc::bind(
1356                                                 sigc::bind(
1357                                                         sigc::mem_fun(
1358                                                                 *canvas_view,
1359                                                                 &studio::CanvasView::popup_param_menu),
1360                                                         false),
1361                                                 1.0f),
1362                                         value_desc));
1363                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1364                         add_duck(duck);
1365
1366                         return true;
1367                 }
1368                 break;
1369         case ValueBase::TYPE_SEGMENT:
1370                 {
1371                         etl::handle<Bezier> bezier(new Bezier());
1372                         ValueNode_Composite::Handle value_node;
1373
1374                         if(value_desc.is_value_node() &&
1375                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1376                         {
1377                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1378                                         return false;
1379                                 bezier->p1=last_duck();
1380                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1381                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1382                                         return false;
1383                                 bezier->c1=last_duck();
1384                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1385                                 bezier->c1->set_origin(bezier->p1);
1386                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1387                                 bezier->c1->set_tangent(true);
1388
1389                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1390                                         return false;
1391                                 bezier->p2=last_duck();
1392                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1393                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1394                                         return false;
1395                                 bezier->c2=last_duck();
1396                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1397                                 bezier->c2->set_origin(bezier->p2);
1398                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1399                                 bezier->c2->set_tangent(true);
1400
1401                                 bezier->signal_user_click(2).connect(
1402                                         sigc::bind(
1403                                                 sigc::mem_fun(
1404                                                         *canvas_view,
1405                                                         &studio::CanvasView::popup_param_menu_bezier),
1406                                                 value_desc));
1407
1408                                 add_bezier(bezier);
1409                         }
1410                         else if(value_desc.get_value().is_valid())
1411                         {
1412                                 Segment segment=value_desc.get_value();
1413                                 etl::handle<Duck> duck_p,duck_c;
1414                                 synfig::String name;
1415                                 if(param_desc)
1416                                 {
1417                                         name=param_desc->get_local_name();
1418                                 }
1419                                 else
1420                                 {
1421                                         name=guid_string(value_desc);
1422                                 }
1423
1424                                 duck_p=new Duck(segment.p1);
1425                                 duck_p->set_name(name+".P1");
1426                                 duck_p->set_type(Duck::TYPE_VERTEX);
1427                                 add_duck(duck_p);
1428
1429                                 duck_c=new Duck(segment.t1);
1430                                 duck_c->set_name(name+".T1");
1431                                 duck_c->set_type(Duck::TYPE_TANGENT);
1432                                 add_duck(duck_c);
1433                                 duck_c->set_origin(duck_p);
1434                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1435                                 duck_c->set_tangent(true);
1436
1437                                 bezier->p1=duck_p;
1438                                 bezier->c1=duck_c;
1439
1440                                 duck_p=new Duck(segment.p2);
1441                                 duck_p->set_name(name+".P2");
1442                                 duck_p->set_type(Duck::TYPE_VERTEX);
1443                                 add_duck(duck_p);
1444
1445                                 duck_c=new Duck(segment.t2);
1446                                 duck_c->set_type(Duck::TYPE_TANGENT);
1447                                 duck_c->set_name(name+".T2");
1448                                 add_duck(duck_c);
1449                                 duck_c->set_origin(duck_p);
1450                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1451                                 duck_c->set_tangent(true);
1452
1453                                 bezier->p2=duck_p;
1454                                 bezier->c2=duck_c;
1455                                 add_bezier(bezier);
1456                         }
1457
1458                         return true;
1459                 }
1460                 break;
1461         case ValueBase::TYPE_BLINEPOINT:
1462         {
1463
1464                 if(value_desc.is_value_node() &&
1465                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1466                 {
1467                         ValueNode_Composite::Handle value_node;
1468                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1469
1470                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1471                                 return false;
1472                         etl::handle<Duck> vertex_duck(last_duck());
1473                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1474                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1475                                 return false;
1476                         etl::handle<Duck> t1_duck(last_duck());
1477
1478                         t1_duck->set_origin(vertex_duck);
1479                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1480                         t1_duck->set_tangent(true);
1481
1482                         etl::handle<Duck> t2_duck;
1483
1484                         // If the tangents are split
1485                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1486                         {
1487                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1488                                         return false;
1489                                 t2_duck=last_duck();
1490                                 t2_duck->set_origin(vertex_duck);
1491                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1492                                 t2_duck->set_tangent(true);
1493                         }
1494                         else
1495                         {
1496                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1497                                         return false;
1498                                 t2_duck=last_duck();
1499                                 t2_duck->set_origin(vertex_duck);
1500                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1501                                 t2_duck->set_tangent(true);
1502                         }
1503                         return true;
1504                 }
1505
1506         }
1507         break;
1508         case ValueBase::TYPE_LIST:
1509         {
1510                 // Check for BLine
1511                 if (value_desc.is_value_node() &&
1512                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1513                 {
1514                         ValueNode_BLine::Handle value_node;
1515                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1516
1517                         int i,first=-1;
1518
1519                         etl::handle<Bezier> bezier;
1520                         etl::handle<Duck> first_duck;
1521                         etl::handle<Duck> duck, tduck;
1522
1523                         for (i = 0; i < value_node->link_count(); i++)
1524                         {
1525                                 float amount(value_node->list[i].amount_at_time(get_time()));
1526
1527                                 // skip vertices that aren't fully on
1528                                 if (amount < 0.9999f)
1529                                         continue;
1530
1531                                 // remember the index of the first vertex we didn't skip
1532                                 if (first == -1)
1533                                         first = i;
1534
1535                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1536
1537                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1538                                 ValueNode_Composite::Handle composite_vertex_value_node(
1539                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1540
1541                                 // add the vertex duck - it's a composite
1542                                 if(composite_vertex_value_node)
1543                                 {
1544                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1545                                         {
1546                                                 duck=last_duck();
1547                                                 if(i==first)
1548                                                         first_duck=duck;
1549                                                 duck->set_type(Duck::TYPE_VERTEX);
1550
1551                                                 duck->signal_user_click(2).clear();
1552                                                 duck->signal_user_click(2).connect(
1553                                                         sigc::bind(
1554                                                                 sigc::bind(
1555                                                                         sigc::bind(
1556                                                                                 sigc::mem_fun(
1557                                                                                         *canvas_view,
1558                                                                                         &studio::CanvasView::popup_param_menu),
1559                                                                                 false),
1560                                                                         1.0f),
1561                                                                 synfigapp::ValueDesc(value_node,i)));
1562                                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1563
1564                                                 if(param_desc)
1565                                                 {
1566                                                         if(!param_desc->get_origin().empty())
1567                                                         {
1568                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1569                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1570                                                                 duck->set_origin(last_duck());
1571 /*
1572                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1573                                                                 if(value.same_type_as(synfig::Point()))
1574                                                                         duck->set_origin(value.get(synfig::Point()));
1575 */
1576                                                         }
1577                                                 }
1578                                         }
1579                                         else
1580                                                 return false;
1581                                 }
1582                                 // else it's not a composite
1583                                 else
1584                                 {
1585                                         duck=new Duck(bline_point.get_vertex());
1586                                         if(i==first)
1587                                                 first_duck=duck;
1588                                         duck->set_transform_stack(transform_stack);
1589                                         duck->set_editable(false);
1590                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1591                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1592
1593                                         duck->set_type(Duck::TYPE_VERTEX);
1594                                         if(param_desc)
1595                                         {
1596                                                 if(!param_desc->get_origin().empty())
1597                                                 {
1598                                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1599                                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1600                                                         duck->set_origin(last_duck());
1601 /*
1602                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1603                                                         if(value.same_type_as(synfig::Point()))
1604                                                                 duck->set_origin(value.get(synfig::Point()));
1605 */
1606                                                 }
1607                                         }
1608                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1609                                         duck=add_similar_duck(duck);
1610 //                                      add_duck(duck);
1611                                 }
1612
1613                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1614                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1615                                         !param_desc)
1616                                 {
1617                                         etl::handle<Duck> width;
1618                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1619                                         {
1620                                                 width=last_duck();
1621                                                 width->set_origin(duck);
1622                                                 width->set_type(Duck::TYPE_WIDTH);
1623                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1624
1625                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1626                                                 if (param_desc)
1627                                                 {
1628                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1629                                                         if(value.same_type_as(synfig::Real()))
1630                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1631                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1632                                                         else
1633                                                                 width->set_scalar(0.5f);
1634                                                 }
1635                                                 // otherwise just present the raw unscaled width
1636                                                 else
1637                                                         width->set_scalar(0.5f);
1638                                         }
1639                                         else
1640                                                 synfig::error("Unable to add width duck!");
1641                                 }
1642
1643                                 // each bezier uses t2 of one point and t1 of the next
1644                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1645                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1646                                 if(bezier)
1647                                 {
1648                                         // Add the tangent1 duck
1649                                         if(composite_vertex_value_node)
1650                                         {
1651                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1652                                                         return false;
1653                                                 tduck=last_duck();
1654                                         }
1655                                         else
1656                                         {
1657                                                 tduck=new Duck(bline_point.get_tangent1());
1658                                                 tduck->set_transform_stack(transform_stack);
1659                                                 tduck->set_editable(false);
1660                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1661 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1662                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1663                                                 tduck=add_similar_duck(tduck);
1664 //                                              add_duck(duck);
1665                                         }
1666
1667                                         tduck->set_origin(duck);
1668                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1669                                         tduck->set_tangent(true);
1670
1671                                         bezier->p2=duck;
1672                                         bezier->c2=tduck;
1673
1674                                         bezier->signal_user_click(2).connect(
1675                                                 sigc::bind(
1676                                                         sigc::mem_fun(
1677                                                                 *canvas_view,
1678                                                                 &studio::CanvasView::popup_param_menu_bezier),
1679                                                         synfigapp::ValueDesc(value_node,i)));
1680
1681                                         duck->signal_user_click(2).clear();
1682                                         duck->signal_user_click(2).connect(
1683                                                 sigc::bind(
1684                                                         sigc::bind(
1685                                                                 sigc::bind(
1686                                                                         sigc::mem_fun(
1687                                                                                 *canvas_view,
1688                                                                                 &studio::CanvasView::popup_param_menu),
1689                                                                         false),
1690                                                                 1.0f),
1691                                                         synfigapp::ValueDesc(value_node,i)));
1692                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1693
1694                                         add_bezier(bezier);
1695                                         bezier=0;
1696                                 }
1697
1698                                 // don't start a new bezier for the last point in the line if we're not looped
1699                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1700                                         continue;
1701
1702                                 bezier=new Bezier();
1703
1704                                 // Add the tangent2 duck
1705                                 if(composite_vertex_value_node)
1706                                 {
1707                                         int i=bline_point.get_split_tangent_flag()?5:4;
1708                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1709                                                 return false;
1710                                         tduck=last_duck();
1711                                 }
1712                                 else
1713                                 {
1714                                         if(bline_point.get_split_tangent_flag())
1715                                                 tduck=new Duck(bline_point.get_tangent2());
1716                                         else
1717                                                 tduck=new Duck(bline_point.get_tangent1());
1718
1719                                         tduck->set_transform_stack(transform_stack);
1720                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1721                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1722                                         tduck->set_editable(false);
1723                                         tduck=add_similar_duck(tduck);
1724 //                                      add_duck(duck);
1725                                         if(param_desc)
1726                                         {
1727                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1728                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1729                                                 duck->set_origin(last_duck());
1730 /*
1731                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1732                                                 if(value.same_type_as(synfig::Point()))
1733                                                         duck->set_origin(value.get(synfig::Point()));
1734 */
1735 //                                              if(!param_desc->get_origin().empty())
1736 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1737                                         }
1738                                         duck->signal_user_click(2).clear();
1739                                         duck->signal_user_click(2).connect(
1740                                                 sigc::bind(
1741                                                         sigc::bind(
1742                                                                 sigc::bind(
1743                                                                         sigc::mem_fun(
1744                                                                                 *canvas_view,
1745                                                                                 &studio::CanvasView::popup_param_menu),
1746                                                                         false),
1747                                                                 1.0f),
1748                                                         synfigapp::ValueDesc(value_node,i)));
1749                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1750
1751                                 }
1752
1753                                 tduck->set_origin(duck);
1754                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1755                                 tduck->set_tangent(true);
1756
1757                                 bezier->p1=duck;
1758                                 bezier->c1=tduck;
1759                         }
1760
1761                         // Loop if necessary
1762                         if(bezier && value_node->get_loop())
1763                         {
1764                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1765
1766                                 ValueNode_Composite::Handle composite_vertex_value_node(
1767                                         ValueNode_Composite::Handle::cast_dynamic(
1768                                                 value_node->get_link(first)));
1769
1770                                 // Add the vertex duck
1771                                 duck=first_duck;
1772
1773                                 // Add the tangent1 duck
1774                                 if(composite_vertex_value_node)
1775                                 {
1776                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1777                                                 return false;
1778                                         tduck=last_duck();
1779                                 }
1780                                 else
1781                                 {
1782                                         tduck=new Duck(bline_point.get_tangent1());
1783                                         tduck->set_transform_stack(transform_stack);
1784                                         tduck->set_editable(false);
1785                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1786                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1787                                         tduck=add_similar_duck(tduck);
1788                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1789                                         //add_duck(duck);
1790                                 }
1791
1792                                 tduck->set_origin(duck);
1793                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1794                                 tduck->set_tangent(true);
1795
1796                                 bezier->p2=duck;
1797                                 bezier->c2=tduck;
1798
1799                                 bezier->signal_user_click(2).connect(
1800                                         sigc::bind(
1801                                                 sigc::mem_fun(
1802                                                         *canvas_view,
1803                                                         &studio::CanvasView::popup_param_menu_bezier),
1804                                                 synfigapp::ValueDesc(value_node,first)));
1805
1806                                 duck->signal_user_click(2).clear();
1807                                 duck->signal_user_click(2).connect(
1808                                         sigc::bind(
1809                                                 sigc::bind(
1810                                                         sigc::bind(
1811                                                                 sigc::mem_fun(
1812                                                                         *canvas_view,
1813                                                                         &studio::CanvasView::popup_param_menu),
1814                                                                 false),
1815                                                         1.0f),
1816                                                 synfigapp::ValueDesc(value_node,first)));
1817                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,first));
1818
1819                                 add_bezier(bezier);
1820                                 bezier=0;
1821                         }
1822                         return true;
1823                 }
1824                 else // Check for DynamicList
1825                 if(value_desc.is_value_node() &&
1826                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1827                 {
1828                         ValueNode_DynamicList::Handle value_node;
1829                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1830                         int i;
1831
1832                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1833                         {
1834                                 Bezier bezier;
1835                                 etl::handle<Duck> first_duck, duck;
1836                                 int first = -1;
1837                                 for(i=0;i<value_node->link_count();i++)
1838                                 {
1839                                         if(!value_node->list[i].status_at_time(get_time()))
1840                                                 continue;
1841                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1842                                                 return false;
1843                                         duck = last_duck();
1844
1845                                         // remember the index of the first vertex we didn't skip
1846                                         if (first == -1)
1847                                         {
1848                                                 first = i;
1849                                                 first_duck = duck;
1850                                         }
1851
1852                                         if(param_desc && !param_desc->get_origin().empty())
1853                                         {
1854                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1855                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1856                                                 duck->set_origin(last_duck());
1857 /*
1858                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1859                                                 if(value.same_type_as(synfig::Point()))
1860                                                         duck->set_origin(value.get(synfig::Point()));
1861 */
1862 //                                              if(!param_desc->get_origin().empty())
1863 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1864                                         }
1865                                         duck->set_type(Duck::TYPE_VERTEX);
1866                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1867                                         bezier.p2=bezier.c2=duck;
1868
1869                                         if (first != i)
1870                                         {
1871                                                 handle<Bezier> bezier_(new Bezier());
1872                                                 bezier_->p1=bezier.p1;
1873                                                 bezier_->c1=bezier.c1;
1874                                                 bezier_->p2=bezier.p2;
1875                                                 bezier_->c2=bezier.c2;
1876                                                 add_bezier(bezier_);
1877                                                 last_bezier()->signal_user_click(2).connect(
1878                                                         sigc::bind(
1879                                                                 sigc::mem_fun(
1880                                                                         *canvas_view,
1881                                                                         &studio::CanvasView::popup_param_menu_bezier),
1882                                                                 synfigapp::ValueDesc(value_node,i)));
1883                                         }
1884                                 }
1885
1886                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1887                                 {
1888                                         duck = first_duck;
1889
1890                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1891                                         bezier.p2=bezier.c2=duck;
1892
1893                                         handle<Bezier> bezier_(new Bezier());
1894                                         bezier_->p1=bezier.p1;
1895                                         bezier_->c1=bezier.c1;
1896                                         bezier_->p2=bezier.p2;
1897                                         bezier_->c2=bezier.c2;
1898                                         add_bezier(bezier_);
1899                                         last_bezier()->signal_user_click(2).connect(
1900                                                 sigc::bind(
1901                                                         sigc::mem_fun(
1902                                                                 *canvas_view,
1903                                                                 &studio::CanvasView::popup_param_menu_bezier),
1904                                                         synfigapp::ValueDesc(value_node,first)));
1905                                 }
1906                         }
1907                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1908                         {
1909                                 for(i=0;i<value_node->link_count();i++)
1910                                 {
1911                                         if(!value_node->list[i].status_at_time(get_time()))
1912                                                 continue;
1913                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1914                                                 return false;
1915                                 }
1916                         }
1917                         else
1918                                 return false;
1919                 }
1920                 else
1921                 {
1922                         // WRITEME
1923                 }
1924
1925                 return true;
1926         }
1927
1928         break;
1929         default:
1930                 break;
1931         }
1932         return false;
1933 }