synfig-studio/src/gui/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 **      Copyright (c) 2009 Nikita Kitaev
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33 #include <fstream>
  34 #include <iostream>
  35 #include <algorithm>
  36
  37 #include <ETL/hermite>
  38
  39 #include "duckmatic.h"
  40 #include <synfigapp/value_desc.h>
  41 #include <synfigapp/canvasinterface.h>
  42 #include <synfig/general.h>
  43 #include <synfig/paramdesc.h>
  44 #include <synfig/valuenode_timedswap.h>
  45 #include <synfig/valuenode_animated.h>
  46 #include <synfig/valuenode_composite.h>
  47 #include <synfig/valuenode_range.h>
  48 #include <synfig/valuenode_scale.h>
  49 #include <synfig/valuenode_bline.h>
  50 #include <synfig/valuenode_blinecalctangent.h>
  51 #include <synfig/valuenode_blinecalcvertex.h>
  52 #include <synfig/valuenode_blinecalcwidth.h>
  53
  54 #include <synfig/curve_helper.h>
  55
  56 #include <sigc++/retype_return.h>
  57 #include <sigc++/retype.h>
  58 #include <sigc++/hide.h>
  59 #include <sigc++/bind.h>
  60
  61 #include "canvasview.h"
  62
  63 #include "onemoment.h"
  64
  65 #include "general.h"
  66
  67 #endif
  68
  69 /* === U S I N G =========================================================== */
  70
  71 using namespace std;
  72 using namespace etl;
  73 using namespace synfig;
  74 using namespace studio;
  75
  76 /* === M A C R O S ========================================================= */
  77
  78 /* 0.33333333333333333 makes for nice short tangent handles,
  79    1.0 makes them draw as their real length */
  80 #define TANGENT_HANDLE_SCALE 0.33333333333333333
  81
  82 /* leave this alone or the bezier won't lie on top of the bline */
  83 #define TANGENT_BEZIER_SCALE 0.33333333333333333
  84
  85 /* === G L O B A L S ======================================================= */
  86
  87 /* === P R O C E D U R E S ================================================= */
  88
  89 /* === M E T H O D S ======================================================= */
  90
  91 /* === E N T R Y P O I N T ================================================= */
  92
  93 Duckmatic::Duckmatic(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface):
  94         canvas_interface(canvas_interface),
  95         type_mask(Duck::TYPE_ALL-Duck::TYPE_WIDTH),
  96         grid_snap(false),
  97         guide_snap(false),
  98         grid_size(1.0/4.0,1.0/4.0),
  99         show_persistent_strokes(true)
 100 {
 101         axis_lock=false;
 102         drag_offset_=Point(0,0);
 103         clear_duck_dragger();
 104 }
 105
 106 Duckmatic::~Duckmatic()
 107 {
 108         clear_ducks();
 109
 110         if (Duck::duck_count)
 111                 synfig::error("%d ducks not yet deleted!", Duck::duck_count);
 112
 113         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
 114                 synfig::info("Duckmatic::~Duckmatic(): Deleted");
 115 }
 116
 117 void
 118 Duckmatic::clear_ducks()
 119 {
 120         duck_data_share_map.clear();
 121         duck_map.clear();
 122
 123         //duck_list_.clear();
 124         bezier_list_.clear();
 125         stroke_list_.clear();
 126
 127         if(show_persistent_strokes)
 128                 stroke_list_=persistent_stroke_list_;
 129 }
 130
 131
 132 bool
 133 Duckmatic::duck_is_selected(const etl::handle<Duck> &duck)const
 134 {
 135         return duck && selected_ducks.count(duck->get_guid());
 136 }
 137
 138 void
 139 Duckmatic::set_grid_size(const synfig::Vector &s)
 140 {
 141         if(grid_size!=s)
 142         {
 143                 grid_size=s;
 144                 signal_grid_changed();
 145         }
 146 }
 147
 148 void
 149 Duckmatic::set_grid_snap(bool x)
 150 {
 151         if(grid_snap!=x)
 152         {
 153                 grid_snap=x;
 154                 signal_grid_changed();
 155         }
 156 }
 157
 158 void
 159 Duckmatic::set_guide_snap(bool x)
 160 {
 161         if(guide_snap!=x)
 162         {
 163                 guide_snap=x;
 164                 signal_grid_changed();
 165         }
 166 }
 167
 168 Duckmatic::GuideList::iterator
 169 Duckmatic::find_guide_x(synfig::Point pos, float radius)
 170 {
 171         GuideList::iterator iter,best(guide_list_x_.end());
 172         float dist(radius);
 173         for(iter=guide_list_x_.begin();iter!=guide_list_x_.end();++iter)
 174         {
 175                 float amount(abs(*iter-pos[0]));
 176                 if(amount<dist)
 177                 {
 178                         dist=amount;
 179                         best=iter;
 180                 }
 181         }
 182         return best;
 183 }
 184
 185 Duckmatic::GuideList::iterator
 186 Duckmatic::find_guide_y(synfig::Point pos, float radius)
 187 {
 188         GuideList::iterator iter,best(guide_list_y_.end());
 189         float dist(radius);
 190         for(iter=guide_list_y_.begin();iter!=guide_list_y_.end();++iter)
 191         {
 192                 float amount(abs(*iter-pos[1]));
 193                 if(amount<=dist)
 194                 {
 195                         dist=amount;
 196                         best=iter;
 197                 }
 198         }
 199         return best;
 200 }
 201
 202 void
 203 Duckmatic::clear_selected_ducks()
 204 {
 205         selected_ducks.clear();
 206         signal_duck_selection_changed_();
 207 }
 208
 209 etl::handle<Duckmatic::Duck>
 210 Duckmatic::get_selected_duck()const
 211 {
 212         if(selected_ducks.empty() || duck_map.empty())
 213                 return 0;
 214         return duck_map.find(*selected_ducks.begin())->second;
 215 }
 216
 217 void
 218 Duckmatic::refresh_selected_ducks()
 219 {
 220 /*
 221         std::set<etl::handle<Duck> >::iterator iter;
 222         std::set<etl::handle<Duck> > new_set;
 223         if(duck_list().empty())
 224         {
 225                 selected_duck_list.clear();
 226                 signal_duck_selection_changed_();
 227                 return;
 228         }
 229
 230         for(iter=selected_duck_list.begin();iter!=selected_duck_list.end();++iter)
 231         {
 232                 etl::handle<Duck> similar(find_similar_duck(*iter));
 233                 if(similar)
 234                 {
 235                         new_set.insert(similar);
 236                 }
 237         }
 238         selected_duck_list=new_set;
 239 */
 240         GUIDSet old_set(selected_ducks);
 241         GUIDSet::const_iterator iter;
 242
 243         for(iter=old_set.begin();iter!=old_set.end();++iter)
 244         {
 245                 if(duck_map.count(*iter)==0)
 246                         selected_ducks.erase(*iter);
 247         }
 248
 249         signal_duck_selection_changed_();
 250 }
 251
 252 bool
 253 Duckmatic::is_duck_group_selectable(const etl::handle<Duck>& x)const
 254 {
 255         const Type type(get_type_mask());
 256
 257         if (((x->get_type() && (!(type & x->get_type()))) ||
 258                  !x->get_editable()))
 259                 return false;
 260
 261         synfigapp::ValueDesc value_desc(x->get_value_desc());
 262         if(value_desc.parent_is_layer_param() && type & Duck::TYPE_POSITION)
 263         {
 264                 Layer::Handle layer(value_desc.get_layer());
 265                 String layer_name(layer->get_name());
 266
 267                 if (layer_name == "outline" || layer_name == "region" || layer_name == "plant" ||
 268                         layer_name == "polygon" || layer_name == "curve_gradient")
 269                         return false;
 270
 271                 if((layer_name=="PasteCanvas"|| layer_name=="paste_canvas") &&
 272                    !layer->get_param("children_lock").get(bool()))
 273                         return false;
 274         }
 275         else if (value_desc.parent_is_value_node())
 276         {
 277                 if (ValueNode_BLineCalcVertex::Handle::cast_dynamic(value_desc.get_value_node()))
 278                         return false;
 279                 if (value_desc.parent_is_linkable_value_node())
 280                 {
 281                         LinkableValueNode::Handle parent_value_node(value_desc.get_parent_value_node());
 282                         if (ValueNode_Composite::Handle::cast_dynamic(parent_value_node))
 283                         {
 284                                 if (parent_value_node->get_type() == ValueBase::TYPE_BLINEPOINT &&
 285                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(
 286                                                 parent_value_node->get_link("point")))
 287                                         return false;
 288                         }
 289                         else if (ValueNode_BLine::Handle::cast_dynamic(parent_value_node))
 290                         {
 291                                 ValueNode_Composite::Handle composite(ValueNode_Composite::Handle::cast_dynamic(
 292                                                                                                                   value_desc.get_value_node()));
 293                                 if (composite &&
 294                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))
 295                                         return false;
 296                         }
 297                 }
 298         }
 299         return true;
 300 }
 301
 302 void
 303 Duckmatic::select_all_ducks()
 304 {
 305         DuckMap::const_iterator iter;
 306         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 307                 if(is_duck_group_selectable(iter->second))
 308                         select_duck(iter->second);
 309                 else
 310                         unselect_duck(iter->second);
 311 }
 312
 313 void
 314 Duckmatic::unselect_all_ducks()
 315 {
 316         DuckMap::const_iterator iter;
 317         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 318                 unselect_duck(iter->second);
 319 }
 320
 321 void
 322 Duckmatic::toggle_select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 323 {
 324         Vector vmin, vmax;
 325         vmin[0]=std::min(tl[0],br[0]);
 326         vmin[1]=std::min(tl[1],br[1]);
 327         vmax[0]=std::max(tl[0],br[0]);
 328         vmax[1]=std::max(tl[1],br[1]);
 329
 330         DuckMap::const_iterator iter;
 331         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 332         {
 333                 Point p(iter->second->get_trans_point());
 334                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1] &&
 335                    is_duck_group_selectable(iter->second))
 336                         toggle_select_duck(iter->second);
 337         }
 338 }
 339
 340 void
 341 Duckmatic::select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 342 {
 343         Vector vmin, vmax;
 344         vmin[0]=std::min(tl[0],br[0]);
 345         vmin[1]=std::min(tl[1],br[1]);
 346         vmax[0]=std::max(tl[0],br[0]);
 347         vmax[1]=std::max(tl[1],br[1]);
 348
 349 //      Type type(get_type_mask());
 350
 351         DuckMap::const_iterator iter;
 352         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 353         {
 354                 Point p(iter->second->get_trans_point());
 355                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1])
 356                 {
 357                         if(is_duck_group_selectable(iter->second))
 358                                 select_duck(iter->second);
 359                 }
 360         }
 361 }
 362
 363 int
 364 Duckmatic::count_selected_ducks()const
 365 {
 366         return selected_ducks.size();
 367 }
 368
 369 void
 370 Duckmatic::select_duck(const etl::handle<Duck> &duck)
 371 {
 372         if(duck)
 373         {
 374                 selected_ducks.insert(duck->get_guid());
 375                 signal_duck_selection_changed_();
 376         }
 377 }
 378
 379 DuckList
 380 Duckmatic::get_selected_ducks()const
 381 {
 382         DuckList ret;
 383         GUIDSet::const_iterator iter;
 384         const Type type(get_type_mask());
 385
 386         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 387         {
 388                 const DuckMap::const_iterator d_iter(duck_map.find(*iter));
 389
 390                 if(d_iter==duck_map.end())
 391                         continue;
 392
 393                 if(( d_iter->second->get_type() && (!(type & d_iter->second->get_type())) ) )
 394                         continue;
 395
 396                 ret.push_back(d_iter->second);
 397         }
 398         return ret;
 399 }
 400
 401 DuckList
 402 Duckmatic::get_duck_list()const
 403 {
 404         DuckList ret;
 405         DuckMap::const_iterator iter;
 406         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_POSITION) ret.push_back(iter->second);
 407         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_VERTEX  ) ret.push_back(iter->second);
 408         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_TANGENT ) ret.push_back(iter->second);
 409         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 410                 if (!(iter->second->get_type()&Duck::TYPE_POSITION) &&
 411                         !(iter->second->get_type()&Duck::TYPE_VERTEX) &&
 412                         !(iter->second->get_type()&Duck::TYPE_TANGENT))
 413                         ret.push_back(iter->second);
 414         return ret;
 415 }
 416
 417 void
 418 Duckmatic::unselect_duck(const etl::handle<Duck> &duck)
 419 {
 420         if(duck && selected_ducks.count(duck->get_guid()))
 421         {
 422                 selected_ducks.erase(duck->get_guid());
 423                 signal_duck_selection_changed_();
 424         }
 425 }
 426
 427 void
 428 Duckmatic::toggle_select_duck(const etl::handle<Duck> &duck)
 429 {
 430         if(duck_is_selected(duck))
 431                 unselect_duck(duck);
 432         else
 433                 select_duck(duck);
 434 }
 435
 436 void
 437 Duckmatic::translate_selected_ducks(const synfig::Vector& vector)
 438 {
 439         if(duck_dragger_)
 440                 duck_dragger_->duck_drag(this,vector);
 441 }
 442
 443 void
 444 Duckmatic::start_duck_drag(const synfig::Vector& offset)
 445 {
 446         if(duck_dragger_)
 447                 duck_dragger_->begin_duck_drag(this,offset);
 448
 449         //drag_offset_=offset;
 450         drag_offset_=find_duck(offset)->get_trans_point();
 451 }
 452
 453 void
 454 Duckmatic::update_ducks()
 455 {
 456         Time time(get_time());
 457         DuckList duck_list(get_duck_list());
 458         const DuckList selected_ducks(get_selected_ducks());
 459         DuckList::const_iterator iter;
 460         for (iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter)
 461         {
 462                 etl::handle<Duck> duck(*iter);
 463                 if (duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 464                 {
 465                         ValueNode_BLineCalcVertex::Handle bline_vertex;
 466                         ValueNode_Composite::Handle composite;
 467
 468                         if ((bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) ||
 469                                 ((composite = ValueNode_Composite::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) &&
 470                                  composite->get_type() == ValueBase::TYPE_BLINEPOINT &&
 471                                  (bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))))
 472                         {
 473                                 DuckList::iterator iter;
 474                                 for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 475                                         if ( (*iter)->get_origin_duck()==duck  /*&& !duck_is_selected(*iter)*/ )
 476                                         {
 477                                                 synfig::Real radius = 0.0;
 478                                                 ValueNode_BLine::Handle bline(ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link("bline")));
 479                                                 Real amount = synfig::find_closest_point((*bline)(time), duck->get_point(), radius, bline->get_loop());
 480
 481                                                 ValueNode::Handle vertex_amount_value_node(bline_vertex->get_link("amount"));
 482
 483
 484                                                 ValueNode::Handle duck_value_node((*iter)->get_value_desc().get_value_node());
 485                                                 if (ValueNode_BLineCalcTangent::Handle bline_tangent = ValueNode_BLineCalcTangent::Handle::cast_dynamic(duck_value_node))
 486                                                 {
 487                                                         if (bline_tangent->get_link("amount") == vertex_amount_value_node)
 488                                                         {
 489                                                                 switch (bline_tangent->get_type())
 490                                                                 {
 491                                                                 case ValueBase::TYPE_ANGLE:
 492                                                                 {
 493                                                                         Angle angle((*bline_tangent)(time, amount).get(Angle()));
 494                                                                         (*iter)->set_point(Point(Angle::cos(angle).get(), Angle::sin(angle).get()));
 495                                                                         (*iter)->set_rotations(Angle::deg(0)); //hack: rotations are a relative value
 496                                                                         break;
 497                                                                 }
 498                                                                 case ValueBase::TYPE_REAL:
 499                                                                         (*iter)->set_point(Point((*bline_tangent)(time, amount).get(Real()), 0));
 500                                                                         break;
 501                                                                 case ValueBase::TYPE_VECTOR:
 502                                                                         (*iter)->set_point((*bline_tangent)(time, amount).get(Vector()));
 503                                                                         break;
 504                                                                 default:
 505                                                                         break;
 506                                                                 }
 507                                                         }
 508                                                 }
 509                                                 else if (ValueNode_BLineCalcWidth::Handle bline_width = ValueNode_BLineCalcWidth::Handle::cast_dynamic(duck_value_node))
 510                                                 {
 511                                                         if (bline_width->get_link("amount") == vertex_amount_value_node)
 512                                                                 (*iter)->set_point(Point((*bline_width)(time, amount).get(Real()), 0));
 513                                                 }
 514                                         }
 515                         }
 516                 }
 517         }
 518 }
 519
 520
 521 bool
 522 Duckmatic::end_duck_drag()
 523 {
 524         if(duck_dragger_)
 525                 return duck_dragger_->end_duck_drag(this);
 526         return false;
 527 }
 528
 529 Point
 530 Duckmatic::snap_point_to_grid(const synfig::Point& x, float radius)const
 531 {
 532         Point ret(x);
 533
 534         GuideList::const_iterator guide_x,guide_y;
 535         bool has_guide_x(false), has_guide_y(false);
 536
 537         guide_x=find_guide_x(ret,radius);
 538         if(guide_x!=guide_list_x_.end())
 539                 has_guide_x=true;
 540
 541         guide_y=find_guide_y(ret,radius);
 542         if(guide_y!=guide_list_y_.end())
 543                 has_guide_y=true;
 544
 545         if(get_grid_snap())
 546         {
 547                 Point snap(
 548                         floor(ret[0]/get_grid_size()[0]+0.5)*get_grid_size()[0],
 549                         floor(ret[1]/get_grid_size()[1]+0.5)*get_grid_size()[1]);
 550
 551                 if(abs(snap[0]-ret[0])<=radius && (!has_guide_x || abs(snap[0]-ret[0])<=abs(*guide_x-ret[0])))
 552                         ret[0]=snap[0],has_guide_x=false;
 553                 if(abs(snap[1]-ret[1])<=radius && (!has_guide_y || abs(snap[1]-ret[1])<=abs(*guide_y-ret[1])))
 554                         ret[1]=snap[1],has_guide_y=false;
 555         }
 556
 557         if(guide_snap)
 558         {
 559                 if(has_guide_x)
 560                         ret[0]=*guide_x;
 561                 if(has_guide_y)
 562                         ret[1]=*guide_y;
 563         }
 564
 565         if(axis_lock)
 566         {
 567                 ret-=drag_offset_;
 568                 if(abs(ret[0])<abs(ret[1]))
 569                         ret[0]=0;
 570                 else
 571                         ret[1]=0;
 572                 ret+=drag_offset_;
 573         }
 574
 575         return ret;
 576 }
 577
 578 void
 579 DuckDrag_Translate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 580 {
 581         last_translate_=Vector(0,0);
 582         {
 583                 drag_offset_=duckmatic->find_duck(offset)->get_trans_point();
 584
 585                 snap=Vector(0,0);
 586         }
 587
 588         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 589         DuckList::const_iterator iter;
 590
 591         positions.clear();
 592         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 593         {
 594                 Point p((*iter)->get_trans_point());
 595                 positions.push_back(p);
 596         }
 597 }
 598
 599 bool
 600 DuckDrag_Translate::end_duck_drag(Duckmatic* duckmatic)
 601 {
 602         if(last_translate_.mag()>0.0001)
 603         {
 604                 duckmatic->signal_edited_selected_ducks();
 605                 return true;
 606         }
 607         else
 608         {
 609                 duckmatic->signal_user_click_selected_ducks(0);
 610                 return false;
 611         }
 612 }
 613
 614 void
 615 DuckDrag_Translate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 616 {
 617         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 618         DuckList::const_iterator iter;
 619
 620         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-drag_offset_);
 621         int i;
 622         Time time(duckmatic->get_time());
 623
 624         // drag the vertex and position ducks first
 625         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 626                 if((*iter)->get_type() == Duck::TYPE_VERTEX || (*iter)->get_type() == Duck::TYPE_POSITION)
 627                         (*iter)->set_trans_point(positions[i]+vect, time);
 628
 629         // then drag the others
 630         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 631                 if ((*iter)->get_type() != Duck::TYPE_VERTEX && (*iter)->get_type() != Duck::TYPE_POSITION)
 632                         (*iter)->set_trans_point(positions[i]+vect, time);
 633
 634         // then patch up the tangents for the vertices we've moved
 635         duckmatic->update_ducks();
 636
 637         last_translate_=vect;
 638 }
 639
 640
 641 void
 642 Duckmatic::signal_user_click_selected_ducks(int button)
 643 {
 644         const DuckList ducks(get_selected_ducks());
 645         DuckList::const_iterator iter;
 646
 647         for(iter=ducks.begin();iter!=ducks.end();++iter)
 648         {
 649                 (*iter)->signal_user_click(button)();
 650         }
 651 }
 652
 653
 654 void
 655 Duckmatic::signal_edited_selected_ducks()
 656 {
 657         const DuckList ducks(get_selected_ducks());
 658         DuckList::const_iterator iter;
 659
 660         synfig::GUIDSet old_set(selected_ducks);
 661
 662         // If we have more than 20 things to move, then display
 663         // something to explain that it may take a moment
 664         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 665
 666         // Go ahead and call everyone's signals
 667         for(iter=ducks.begin();iter!=ducks.end();++iter)
 668         {
 669                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 670                 {
 671                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 672                         {
 673                                 selected_ducks=old_set;
 674                                 throw String("Bad edit");
 675                         }
 676                 }
 677                 else if (App::restrict_radius_ducks &&
 678                                  (*iter)->is_radius())
 679                 {
 680                         Point point((*iter)->get_point());
 681                         bool changed = false;
 682
 683                         if (point[0] < 0)
 684                         {
 685                                 point[0] = 0;
 686                                 changed = true;
 687                         }
 688                         if (point[1] < 0)
 689                         {
 690                                 point[1] = 0;
 691                                 changed = true;
 692                         }
 693
 694                         if (changed) (*iter)->set_point(point);
 695
 696                         if(!(*iter)->signal_edited()(point))
 697                         {
 698                                 selected_ducks=old_set;
 699                                 throw String("Bad edit");
 700                         }
 701                 }
 702                 else
 703                 {
 704                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 705                         {
 706                                 selected_ducks=old_set;
 707                                 throw String("Bad edit");
 708                         }
 709                 }
 710         }
 711         selected_ducks=old_set;
 712 }
 713
 714
 715 bool
 716 Duckmatic::on_duck_changed(const synfig::Point &value,const synfigapp::ValueDesc& value_desc)
 717 {
 718         switch(value_desc.get_value_type())
 719         {
 720         case ValueBase::TYPE_REAL:
 721                 return canvas_interface->change_value(value_desc,value.mag());
 722         case ValueBase::TYPE_ANGLE:
 723                 return canvas_interface->change_value(value_desc,Angle::tan(value[1],value[0]));
 724         default:
 725                 return canvas_interface->change_value(value_desc,value);
 726         }
 727 }
 728
 729 bool
 730 Duckmatic::on_duck_angle_changed(const synfig::Angle &rotation,const synfigapp::ValueDesc& value_desc)
 731 {
 732         // \todo will this really always be the case?
 733         assert(value_desc.get_value_type() == ValueBase::TYPE_ANGLE);
 734         return canvas_interface->change_value(value_desc, value_desc.get_value(get_time()).get(Angle()) + rotation);
 735 }
 736
 737 void
 738 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 739 {
 740         //if(!duck_map.count(duck->get_guid()))
 741         {
 742                 if(duck_data_share_map.count(duck->get_data_guid()))
 743                 {
 744                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 745                 }
 746                 else
 747                 {
 748                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 749                         duck->set_shared_point(point);
 750                         duck_data_share_map[duck->get_data_guid()]=point;
 751                 }
 752
 753                 duck_map.insert(duck);
 754         }
 755
 756         last_duck_guid=duck->get_guid();
 757 }
 758
 759 void
 760 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 761 {
 762         bezier_list_.push_back(bezier);
 763 }
 764
 765 void
 766 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 767 {
 768         assert(stroke_point_list);
 769
 770         std::list<etl::handle<Stroke> >::iterator iter;
 771
 772         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 773         {
 774                 if((*iter)->stroke_data==stroke_point_list)
 775                         return;
 776         }
 777
 778         etl::handle<Stroke> stroke(new Stroke());
 779
 780         stroke->stroke_data=stroke_point_list;
 781         stroke->color=color;
 782
 783         stroke_list_.push_back(stroke);
 784 }
 785
 786 void
 787 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 788 {
 789         add_stroke(stroke_point_list,color);
 790         persistent_stroke_list_.push_back(stroke_list_.back());
 791 }
 792
 793 void
 794 Duckmatic::clear_persistent_strokes()
 795 {
 796         persistent_stroke_list_.clear();
 797 }
 798
 799 void
 800 Duckmatic::set_show_persistent_strokes(bool x)
 801 {
 802         if(x!=show_persistent_strokes)
 803         {
 804                 show_persistent_strokes=x;
 805                 if(x)
 806                         stroke_list_=persistent_stroke_list_;
 807                 else
 808                         stroke_list_.clear();
 809         }
 810 }
 811
 812 void
 813 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 814 {
 815         duck_map.erase(duck->get_guid());
 816 }
 817
 818 etl::handle<Duckmatic::Duck>
 819 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 820 {
 821         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 822         if(iter!=duck_map.end())
 823                 return iter->second;
 824         return 0;
 825
 826 /*      std::list<handle<Duck> >::reverse_iterator iter;
 827
 828         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 829         {
 830                 if(*iter!=duck && **iter==*duck)
 831                 {
 832                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 833                         return *iter;
 834                 }
 835         }
 836         return 0;
 837 */
 838 }
 839
 840 etl::handle<Duckmatic::Duck>
 841 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 842 {
 843         etl::handle<Duck> similar(find_similar_duck(duck));
 844         if(!similar)
 845         {
 846                 add_duck(duck);
 847                 return duck;
 848         }
 849         return similar;
 850 }
 851
 852 void
 853 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 854 {
 855         std::list<handle<Bezier> >::iterator iter;
 856
 857         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 858         {
 859                 if(*iter==bezier)
 860                 {
 861                         bezier_list_.erase(iter);
 862                         return;
 863                 }
 864         }
 865         synfig::warning("Unable to find bezier to erase!");
 866 }
 867
 868 etl::handle<Duckmatic::Duck>
 869 Duckmatic::last_duck()const
 870 {
 871         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 872         if(iter!=duck_map.end())
 873                 return iter->second;
 874         return 0;
 875 }
 876
 877 etl::handle<Duckmatic::Bezier>
 878 Duckmatic::last_bezier()const
 879 {
 880         return bezier_list_.back();
 881 }
 882
 883 etl::handle<Duckmatic::Duck>
 884 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 885 {
 886         if(radius==0)radius=10000000;
 887
 888         if(type==Duck::TYPE_DEFAULT)
 889                 type=get_type_mask();
 890
 891         Real closest(10000000);
 892         etl::handle<Duck> ret;
 893
 894         DuckMap::const_iterator iter;
 895
 896         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 897         {
 898                 const Duck::Handle& duck(iter->second);
 899
 900                 if(duck->get_ignore() ||
 901                    (duck->get_type() && !(type & duck->get_type())))
 902                         continue;
 903
 904                 Real dist((duck->get_trans_point()-point).mag_squared());
 905
 906                 if(duck->get_type()&Duck::TYPE_VERTEX)
 907                         dist*=1.0001;
 908                 else if(duck->get_type()&Duck::TYPE_TANGENT && duck->get_scalar()>0)
 909                         dist*=1.00005;
 910                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 911                         dist*=0.9999;
 912
 913                 if(dist<=closest)
 914                 {
 915                         closest=dist;
 916                         ret=duck;
 917                 }
 918         }
 919
 920         if(radius==0 || closest<radius*radius)
 921                 return ret;
 922
 923         return 0;
 924 }
 925
 926 etl::handle<Duckmatic::Bezier>
 927 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 928 {
 929         return find_bezier(point,radius,radius,location);
 930 }
 931
 932 etl::handle<Duckmatic::Bezier>
 933 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 934 {
 935         if(radius==0)radius=10000000;
 936         Real closest(10000000);
 937         etl::handle<Bezier> ret;
 938
 939         bezier<Point>   curve;
 940
 941         Real    d,step;
 942         float   time = 0;
 943         float   best_time = 0;
 944
 945         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 946         {
 947                 curve[0] = (*iter)->p1->get_trans_point();
 948                 curve[1] = (*iter)->c1->get_trans_point();
 949                 curve[2] = (*iter)->c2->get_trans_point();
 950                 curve[3] = (*iter)->p2->get_trans_point();
 951                 curve.sync();
 952
 953 #if 0
 954                 // I don't know why this doesn't work
 955                 time=curve.find_closest(pos,6);
 956                 d=((curve(time)-pos).mag_squared());
 957
 958 #else
 959                 //set the step size based on the size of the picture
 960                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 961
 962                 step = d/(2*scale); //want to make the distance between lines happy
 963
 964                 step = max(step,0.01); //100 samples should be plenty
 965                 step = min(step,0.1); //10 is minimum
 966
 967                 d = find_closest(curve,pos,step,&closest,&time);
 968 #endif
 969
 970                 if(d < closest)
 971                 {
 972                         closest = d;
 973                         ret = *iter;
 974                         best_time=time;
 975                 }
 976         }
 977
 978         if(closest < radius*radius)
 979         {
 980                 if(location)
 981                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 982
 983                 return ret;
 984         }
 985
 986         return 0;
 987 }
 988
 989 bool
 990 Duckmatic::save_sketch(const synfig::String& filename)const
 991 {
 992         ChangeLocale change_locale(LC_NUMERIC, "C");
 993         std::ofstream file(filename.c_str());
 994
 995         if(!file)return false;
 996
 997         file<<"SKETCH"<<endl;
 998
 999         std::list<etl::handle<Stroke> >::const_iterator iter;
1000
1001         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
1002         {
1003                 file<<"C "
1004                         <<(*iter)->color.get_r()<<' '
1005                         <<(*iter)->color.get_g()<<' '
1006                         <<(*iter)->color.get_b()
1007                 <<endl;
1008                 std::list<synfig::Point>::const_iterator viter;
1009                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
1010                 {
1011                         file<<"V "
1012                                 <<(*viter)[0]<<' '
1013                                 <<(*viter)[1]
1014                         <<endl;
1015                 }
1016         }
1017         if(!file)return false;
1018         sketch_filename_=filename;
1019         signal_sketch_saved_();
1020         return true;
1021 }
1022
1023 bool
1024 Duckmatic::load_sketch(const synfig::String& filename)
1025 {
1026         ChangeLocale change_locale(LC_NUMERIC, "C");
1027         std::ifstream file(filename.c_str());
1028
1029         if(!file)
1030                 return false;
1031
1032         std::string line;
1033         getline(file,line);
1034
1035         if(line!="SKETCH")
1036         {
1037                 synfig::error("Not a sketch");
1038                 return false;
1039         }
1040
1041         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
1042
1043         while(file)
1044         {
1045                 getline(file,line);
1046
1047                 if(line.empty())
1048                         continue;
1049
1050                 switch(line[0])
1051                 {
1052                 case 'C':
1053                 case 'c':
1054                         {
1055                                 stroke_data.spawn();
1056                                 float r,g,b;
1057                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
1058                                 {
1059                                         synfig::warning("Bad color line \"%s\"",line.c_str());
1060                                         r=0;g=0;b=0;
1061                                 }
1062                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
1063                         }
1064                         break;
1065                 case 'V':
1066                 case 'v':
1067                         if(!stroke_data)
1068                         {
1069                                 stroke_data.spawn();
1070                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
1071                         }
1072                         float x,y;
1073                         if(!strscanf(line,"V %f %f",&x, &y))
1074                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
1075                         else
1076                                 stroke_data->push_back(synfig::Vector(x,y));
1077                         break;
1078                 default:
1079                         synfig::warning("Unexpected sketch token '%c'",line[0]);
1080                         break;
1081                 }
1082         }
1083
1084         sketch_filename_=filename;
1085         return true;
1086 }
1087
1088 Duckmatic::Push::Push(Duckmatic *duckmatic_):
1089         duckmatic_(duckmatic_)
1090 {
1091         duck_map=duckmatic_->duck_map;
1092         bezier_list_=duckmatic_->bezier_list_;
1093         duck_data_share_map=duckmatic_->duck_data_share_map;
1094         stroke_list_=duckmatic_->stroke_list_;
1095         duck_dragger_=duckmatic_->duck_dragger_;
1096         needs_restore=true;
1097 }
1098
1099 Duckmatic::Push::~Push()
1100 {
1101         if(needs_restore)
1102                 restore();
1103 }
1104
1105 void
1106 Duckmatic::Push::restore()
1107 {
1108         duckmatic_->duck_map=duck_map;
1109         duckmatic_->bezier_list_=bezier_list_;
1110         duckmatic_->duck_data_share_map=duck_data_share_map;
1111         duckmatic_->stroke_list_=stroke_list_;
1112         duckmatic_->duck_dragger_=duck_dragger_;
1113         needs_restore=false;
1114 }
1115
1116 inline String guid_string(const synfigapp::ValueDesc& x)
1117 {
1118         if(x.parent_is_layer_param())
1119                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1120         //if(x.is_value_node())
1121                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1122 }
1123
1124 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1125 {
1126         synfig::GUID ret(0);
1127
1128         if(x.parent_is_layer_param())
1129         {
1130                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1131         }
1132         else
1133         {
1134                 ret=x.get_value_node()->get_guid();
1135         }
1136
1137         ret^=transform_stack.get_guid();
1138         return ret;
1139 }
1140
1141 /*
1142 Duck::Handle
1143 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)
1144 {
1145         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1146         etl::handle<Duck> duck=new Duck();
1147
1148         return duck;
1149 }
1150 */
1151
1152 bool
1153 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)
1154 {
1155         ValueBase::Type type=value_desc.get_value_type();
1156 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1157         switch(type)
1158         {
1159         case ValueBase::TYPE_REAL:
1160
1161                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1162                 {
1163                         etl::handle<Duck> duck=new Duck();
1164                         duck->set_transform_stack(transform_stack);
1165                         duck->set_radius(true);
1166                         duck->set_type(Duck::TYPE_RADIUS);
1167
1168                         // put the duck on the right hand side of the center
1169                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1170                         duck->set_name(guid_string(value_desc));
1171                         if(value_desc.is_value_node())
1172                         {
1173                                 // If the ValueNode can be directly manipulated,
1174                                 // then set it as so.
1175                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1176                         }
1177                         else
1178                         {
1179                                 duck->set_editable(true);
1180                         }
1181
1182                         if(param_desc && param_desc!=REAL_COOKIE)
1183                         {
1184                                 if(!param_desc->get_origin().empty())
1185                                 {
1186                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1187                                         /*
1188                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1189                                         */
1190                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1191                                         duck->set_origin(last_duck());
1192                                 }
1193                                 duck->set_scalar(param_desc->get_scalar());
1194                         }
1195
1196                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1197                         duck->signal_edited().connect(
1198                                 sigc::bind(
1199                                         sigc::mem_fun(
1200                                                 *this,
1201                                                 &studio::Duckmatic::on_duck_changed),
1202                                         value_desc));
1203                         duck->set_value_desc(value_desc);
1204
1205                         duck->signal_user_click(2).connect(
1206                                 sigc::bind(
1207                                         sigc::bind(
1208                                                 sigc::bind(
1209                                                         sigc::mem_fun(
1210                                                                 *canvas_view,
1211                                                                 &studio::CanvasView::popup_param_menu),
1212                                                         false),
1213                                                 0.0f),
1214                                         value_desc));
1215
1216                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1217
1218                         add_duck(duck);
1219
1220                         return true;
1221                 }
1222                 break;
1223
1224         case ValueBase::TYPE_ANGLE:
1225
1226                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1227                 {
1228                         etl::handle<Duck> duck=new Duck();
1229                         duck->set_type(Duck::TYPE_ANGLE);
1230                         duck->set_transform_stack(transform_stack);
1231                         synfig::Angle angle;
1232
1233                         angle=value_desc.get_value(get_time()).get(Angle());
1234                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1235                         duck->set_name(guid_string(value_desc));
1236                         if(value_desc.is_value_node())
1237                         {
1238                                 ValueNode::Handle value_node=value_desc.get_value_node();
1239                                 //duck->set_name(strprintf("%x",value_node.get()));
1240
1241                                 // If the ValueNode can be directly manipulated,
1242                                 // then set it as so.
1243                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1244                         }
1245                         else
1246                         {
1247                                 //angle=(value_desc.get_value().get(Angle()));
1248                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1249                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1250                                 duck->set_editable(true);
1251                         }
1252
1253                         if(param_desc && param_desc!=REAL_COOKIE)
1254                         {
1255                                 if(!param_desc->get_origin().empty())
1256                                 {
1257                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1258                                         /*
1259                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1260                                         */
1261                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1262                                         duck->set_origin(last_duck());
1263                                 }
1264                                 duck->set_scalar(param_desc->get_scalar());
1265                         }
1266
1267                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1268                         duck->signal_edited_angle().clear();
1269                         duck->signal_edited_angle().connect(
1270                                 sigc::bind(
1271                                         sigc::mem_fun(
1272                                                 *this,
1273                                                 &studio::Duckmatic::on_duck_angle_changed),
1274                                         value_desc));
1275                         duck->set_value_desc(value_desc);
1276
1277                         duck->signal_user_click(2).connect(
1278                                 sigc::bind(
1279                                         sigc::bind(
1280                                                 sigc::bind(
1281                                                         sigc::mem_fun(
1282                                                                 *canvas_view,
1283                                                                 &studio::CanvasView::popup_param_menu),
1284                                                         false),
1285                                                 0.0f),
1286                                         value_desc));
1287                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1288
1289                         add_duck(duck);
1290
1291                         return true;
1292                 }
1293                 break;
1294
1295         case ValueBase::TYPE_VECTOR:
1296                 {
1297                         etl::handle<Duck> duck=new Duck();
1298                         duck->set_transform_stack(transform_stack);
1299
1300                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1301                         duck->set_name(guid_string(value_desc));
1302                         if(value_desc.is_value_node())
1303                         {
1304                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1305
1306                                 // If the ValueNode can be directly manipulated,
1307                                 // then set it as so.
1308                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1309                         }
1310                         else
1311                         {
1312                                 //duck->set_point(value_desc.get_value().get(Point()));
1313                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1314                                 duck->set_editable(true);
1315                         }
1316
1317                         // If we were passed a parameter description
1318                         if(param_desc)
1319                         {
1320                                 if(!param_desc->get_connect().empty())
1321                                 {
1322                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1323                                         Duck::Handle connect_duck;
1324                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1325                                         {
1326                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1327                                         }
1328                                         else
1329                                         {
1330                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1331                                                 connect_duck=last_duck();
1332                                         }
1333                                         duck->set_connect_duck(connect_duck);
1334                                 }
1335                                 if(!param_desc->get_box().empty())
1336                                 {
1337                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1338                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1339                                         duck->set_box_duck(last_duck());
1340                                 }
1341
1342                                 // If we have an origin
1343                                 if(!param_desc->get_origin().empty())
1344                                 {
1345                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1346                                         /*
1347                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1348                                         */
1349                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1350                                         duck->set_origin(last_duck());
1351                                         duck->set_type(Duck::TYPE_VERTEX);
1352                                 }
1353                                 else
1354                                         duck->set_type(Duck::TYPE_POSITION);
1355
1356                                 duck->set_scalar(param_desc->get_scalar());
1357                         }
1358                         else
1359                                 duck->set_type(Duck::TYPE_POSITION);
1360
1361                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1362                         duck->signal_edited().connect(
1363                                 sigc::bind(
1364                                         sigc::mem_fun(
1365                                                 *this,
1366                                                 &studio::Duckmatic::on_duck_changed),
1367                                         value_desc));
1368                         duck->set_value_desc(value_desc);
1369
1370                         duck->signal_user_click(2).connect(
1371                                 sigc::bind(
1372                                         sigc::bind(
1373                                                 sigc::bind(
1374                                                         sigc::mem_fun(
1375                                                                 *canvas_view,
1376                                                                 &studio::CanvasView::popup_param_menu),
1377                                                         false),
1378                                                 1.0f),
1379                                         value_desc));
1380                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1381                         add_duck(duck);
1382
1383                         return true;
1384                 }
1385                 break;
1386         case ValueBase::TYPE_SEGMENT:
1387                 {
1388                         etl::handle<Bezier> bezier(new Bezier());
1389                         ValueNode_Composite::Handle value_node;
1390
1391                         if(value_desc.is_value_node() &&
1392                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1393                         {
1394                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1395                                         return false;
1396                                 bezier->p1=last_duck();
1397                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1398                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1399                                         return false;
1400                                 bezier->c1=last_duck();
1401                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1402                                 bezier->c1->set_origin(bezier->p1);
1403                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1404                                 bezier->c1->set_tangent(true);
1405
1406                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1407                                         return false;
1408                                 bezier->p2=last_duck();
1409                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1410                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1411                                         return false;
1412                                 bezier->c2=last_duck();
1413                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1414                                 bezier->c2->set_origin(bezier->p2);
1415                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1416                                 bezier->c2->set_tangent(true);
1417
1418                                 bezier->signal_user_click(2).connect(
1419                                         sigc::bind(
1420                                                 sigc::mem_fun(
1421                                                         *canvas_view,
1422                                                         &studio::CanvasView::popup_param_menu_bezier),
1423                                                 value_desc));
1424
1425                                 add_bezier(bezier);
1426                         }
1427                         else if(value_desc.get_value().is_valid())
1428                         {
1429                                 Segment segment=value_desc.get_value();
1430                                 etl::handle<Duck> duck_p,duck_c;
1431                                 synfig::String name;
1432                                 if(param_desc)
1433                                 {
1434                                         name=param_desc->get_local_name();
1435                                 }
1436                                 else
1437                                 {
1438                                         name=guid_string(value_desc);
1439                                 }
1440
1441                                 duck_p=new Duck(segment.p1);
1442                                 duck_p->set_name(name+".P1");
1443                                 duck_p->set_type(Duck::TYPE_VERTEX);
1444                                 add_duck(duck_p);
1445
1446                                 duck_c=new Duck(segment.t1);
1447                                 duck_c->set_name(name+".T1");
1448                                 duck_c->set_type(Duck::TYPE_TANGENT);
1449                                 add_duck(duck_c);
1450                                 duck_c->set_origin(duck_p);
1451                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1452                                 duck_c->set_tangent(true);
1453
1454                                 bezier->p1=duck_p;
1455                                 bezier->c1=duck_c;
1456
1457                                 duck_p=new Duck(segment.p2);
1458                                 duck_p->set_name(name+".P2");
1459                                 duck_p->set_type(Duck::TYPE_VERTEX);
1460                                 add_duck(duck_p);
1461
1462                                 duck_c=new Duck(segment.t2);
1463                                 duck_c->set_type(Duck::TYPE_TANGENT);
1464                                 duck_c->set_name(name+".T2");
1465                                 add_duck(duck_c);
1466                                 duck_c->set_origin(duck_p);
1467                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1468                                 duck_c->set_tangent(true);
1469
1470                                 bezier->p2=duck_p;
1471                                 bezier->c2=duck_c;
1472                                 add_bezier(bezier);
1473                         }
1474
1475                         return true;
1476                 }
1477                 break;
1478         case ValueBase::TYPE_BLINEPOINT:
1479         {
1480
1481                 if(value_desc.is_value_node() &&
1482                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1483                 {
1484                         ValueNode_Composite::Handle value_node;
1485                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1486
1487                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1488                                 return false;
1489                         etl::handle<Duck> vertex_duck(last_duck());
1490                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1491                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4,-TANGENT_HANDLE_SCALE),canvas_view,transform_stack))
1492                                 return false;
1493                         etl::handle<Duck> t1_duck(last_duck());
1494
1495                         t1_duck->set_origin(vertex_duck);
1496                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1497                         t1_duck->set_tangent(true);
1498
1499                         etl::handle<Duck> t2_duck;
1500
1501                         // If the tangents are split
1502                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1503                         {
1504                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5,TANGENT_HANDLE_SCALE),canvas_view,transform_stack))
1505                                         return false;
1506                                 t2_duck=last_duck();
1507                                 t2_duck->set_origin(vertex_duck);
1508                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1509                                 t2_duck->set_tangent(true);
1510                         }
1511                         else
1512                         {
1513                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4,TANGENT_HANDLE_SCALE),canvas_view,transform_stack))
1514                                         return false;
1515                                 t2_duck=last_duck();
1516                                 t2_duck->set_origin(vertex_duck);
1517                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1518                                 t2_duck->set_tangent(true);
1519                         }
1520                         return true;
1521                 }
1522
1523         }
1524         break;
1525         case ValueBase::TYPE_LIST:
1526         {
1527                 // Check for BLine
1528                 if (value_desc.is_value_node() &&
1529                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1530                 {
1531                         ValueNode_BLine::Handle value_node;
1532                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1533
1534                         int i,first=-1;
1535
1536                         etl::handle<Bezier> bezier;
1537                         etl::handle<Duck> first_duck;
1538                         etl::handle<Duck> duck, tduck;
1539
1540                         for (i = 0; i < value_node->link_count(); i++)
1541                         {
1542                                 float amount(value_node->list[i].amount_at_time(get_time()));
1543
1544                                 // skip vertices that aren't fully on
1545                                 if (amount < 0.9999f)
1546                                         continue;
1547
1548                                 // remember the index of the first vertex we didn't skip
1549                                 if (first == -1)
1550                                         first = i;
1551
1552                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1553
1554                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1555                                 ValueNode_Composite::Handle composite_vertex_value_node(
1556                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1557
1558                                 // add the vertex duck - it's a composite
1559                                 if(composite_vertex_value_node)
1560                                 {
1561                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1562                                         {
1563                                                 duck=last_duck();
1564                                                 if(i==first)
1565                                                         first_duck=duck;
1566                                                 duck->set_type(Duck::TYPE_VERTEX);
1567
1568                                                 duck->signal_user_click(2).clear();
1569                                                 duck->signal_user_click(2).connect(
1570                                                         sigc::bind(
1571                                                                 sigc::bind(
1572                                                                         sigc::bind(
1573                                                                                 sigc::mem_fun(
1574                                                                                         *canvas_view,
1575                                                                                         &studio::CanvasView::popup_param_menu),
1576                                                                                 false),
1577                                                                         1.0f),
1578                                                                 synfigapp::ValueDesc(value_node,i)));
1579                                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1580
1581                                                 if(param_desc)
1582                                                 {
1583                                                         if(!param_desc->get_origin().empty())
1584                                                         {
1585                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1586                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1587                                                                 duck->set_origin(last_duck());
1588 /*
1589                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1590                                                                 if(value.same_type_as(synfig::Point()))
1591                                                                         duck->set_origin(value.get(synfig::Point()));
1592 */
1593                                                         }
1594                                                 }
1595                                         }
1596                                         else
1597                                                 return false;
1598                                 }
1599                                 // else it's not a composite
1600                                 else
1601                                 {
1602                                         duck=new Duck(bline_point.get_vertex());
1603                                         if(i==first)
1604                                                 first_duck=duck;
1605                                         duck->set_transform_stack(transform_stack);
1606                                         duck->set_editable(false);
1607                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1608                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1609
1610                                         duck->set_type(Duck::TYPE_VERTEX);
1611                                         if(param_desc)
1612                                         {
1613                                                 if(!param_desc->get_origin().empty())
1614                                                 {
1615                                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1616                                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1617                                                         duck->set_origin(last_duck());
1618 /*
1619                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1620                                                         if(value.same_type_as(synfig::Point()))
1621                                                                 duck->set_origin(value.get(synfig::Point()));
1622 */
1623                                                 }
1624                                         }
1625                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1626                                         duck=add_similar_duck(duck);
1627 //                                      add_duck(duck);
1628                                 }
1629
1630                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1631                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1632                                         !param_desc)
1633                                 {
1634                                         etl::handle<Duck> width;
1635                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1636                                         {
1637                                                 width=last_duck();
1638                                                 width->set_origin(duck);
1639                                                 width->set_type(Duck::TYPE_WIDTH);
1640                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1641
1642                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1643                                                 if (param_desc)
1644                                                 {
1645                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1646                                                         if(value.same_type_as(synfig::Real()))
1647                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1648                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1649                                                         else
1650                                                                 width->set_scalar(0.5f);
1651                                                 }
1652                                                 // otherwise just present the raw unscaled width
1653                                                 else
1654                                                         width->set_scalar(0.5f);
1655                                         }
1656                                         else
1657                                                 synfig::error("Unable to add width duck!");
1658                                 }
1659
1660                                 // each bezier uses t2 of one point and t1 of the next
1661                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1662                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1663                                 if(bezier)
1664                                 {
1665                                         // Add the tangent1 duck
1666                                         if(composite_vertex_value_node)
1667                                         {
1668                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4,-TANGENT_BEZIER_SCALE),canvas_view,transform_stack))
1669                                                         return false;
1670                                                 tduck=last_duck();
1671                                         }
1672                                         else
1673                                         {
1674                                                 tduck=new Duck(bline_point.get_tangent1());
1675                                                 tduck->set_transform_stack(transform_stack);
1676                                                 tduck->set_editable(false);
1677                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1678 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1679                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1680                                                 tduck=add_similar_duck(tduck);
1681 //                                              add_duck(duck);
1682                                         }
1683
1684                                         tduck->set_origin(duck);
1685                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1686                                         tduck->set_tangent(true);
1687
1688                                         bezier->p2=duck;
1689                                         bezier->c2=tduck;
1690
1691                                         bezier->signal_user_click(2).connect(
1692                                                 sigc::bind(
1693                                                         sigc::mem_fun(
1694                                                                 *canvas_view,
1695                                                                 &studio::CanvasView::popup_param_menu_bezier),
1696                                                         synfigapp::ValueDesc(value_node,i)));
1697
1698                                         duck->signal_user_click(2).clear();
1699                                         duck->signal_user_click(2).connect(
1700                                                 sigc::bind(
1701                                                         sigc::bind(
1702                                                                 sigc::bind(
1703                                                                         sigc::mem_fun(
1704                                                                                 *canvas_view,
1705                                                                                 &studio::CanvasView::popup_param_menu),
1706                                                                         false),
1707                                                                 1.0f),
1708                                                         synfigapp::ValueDesc(value_node,i)));
1709                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1710
1711                                         add_bezier(bezier);
1712                                         bezier=0;
1713                                 }
1714
1715                                 // don't start a new bezier for the last point in the line if we're not looped
1716                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1717                                         continue;
1718
1719                                 bezier=new Bezier();
1720
1721                                 // Add the tangent2 duck
1722                                 if(composite_vertex_value_node)
1723                                 {
1724                                         int i=bline_point.get_split_tangent_flag()?5:4;
1725                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i,TANGENT_BEZIER_SCALE),canvas_view,transform_stack,0,2))
1726                                                 return false;
1727                                         tduck=last_duck();
1728                                 }
1729                                 else
1730                                 {
1731                                         if(bline_point.get_split_tangent_flag())
1732                                                 tduck=new Duck(bline_point.get_tangent2());
1733                                         else
1734                                                 tduck=new Duck(bline_point.get_tangent1());
1735
1736                                         tduck->set_transform_stack(transform_stack);
1737                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1738                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1739                                         tduck->set_editable(false);
1740                                         tduck=add_similar_duck(tduck);
1741 //                                      add_duck(duck);
1742                                         if(param_desc)
1743                                         {
1744                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1745                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1746                                                 duck->set_origin(last_duck());
1747 /*
1748                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1749                                                 if(value.same_type_as(synfig::Point()))
1750                                                         duck->set_origin(value.get(synfig::Point()));
1751 */
1752 //                                              if(!param_desc->get_origin().empty())
1753 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1754                                         }
1755                                         duck->signal_user_click(2).clear();
1756                                         duck->signal_user_click(2).connect(
1757                                                 sigc::bind(
1758                                                         sigc::bind(
1759                                                                 sigc::bind(
1760                                                                         sigc::mem_fun(
1761                                                                                 *canvas_view,
1762                                                                                 &studio::CanvasView::popup_param_menu),
1763                                                                         false),
1764                                                                 1.0f),
1765                                                         synfigapp::ValueDesc(value_node,i)));
1766                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1767
1768                                 }
1769
1770                                 tduck->set_origin(duck);
1771                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1772                                 tduck->set_tangent(true);
1773
1774                                 bezier->p1=duck;
1775                                 bezier->c1=tduck;
1776                         }
1777
1778                         // Loop if necessary
1779                         if(bezier && value_node->get_loop())
1780                         {
1781                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1782
1783                                 ValueNode_Composite::Handle composite_vertex_value_node(
1784                                         ValueNode_Composite::Handle::cast_dynamic(
1785                                                 value_node->get_link(first)));
1786
1787                                 // Add the vertex duck
1788                                 duck=first_duck;
1789
1790                                 // Add the tangent1 duck
1791                                 if(composite_vertex_value_node)
1792                                 {
1793                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1794                                                 return false;
1795                                         tduck=last_duck();
1796                                 }
1797                                 else
1798                                 {
1799                                         tduck=new Duck(bline_point.get_tangent1());
1800                                         tduck->set_transform_stack(transform_stack);
1801                                         tduck->set_editable(false);
1802                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1803                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1804                                         tduck=add_similar_duck(tduck);
1805                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1806                                         //add_duck(duck);
1807                                 }
1808
1809                                 tduck->set_origin(duck);
1810                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1811                                 tduck->set_tangent(true);
1812
1813                                 bezier->p2=duck;
1814                                 bezier->c2=tduck;
1815
1816                                 bezier->signal_user_click(2).connect(
1817                                         sigc::bind(
1818                                                 sigc::mem_fun(
1819                                                         *canvas_view,
1820                                                         &studio::CanvasView::popup_param_menu_bezier),
1821                                                 synfigapp::ValueDesc(value_node,first)));
1822
1823                                 duck->signal_user_click(2).clear();
1824                                 duck->signal_user_click(2).connect(
1825                                         sigc::bind(
1826                                                 sigc::bind(
1827                                                         sigc::bind(
1828                                                                 sigc::mem_fun(
1829                                                                         *canvas_view,
1830                                                                         &studio::CanvasView::popup_param_menu),
1831                                                                 false),
1832                                                         1.0f),
1833                                                 synfigapp::ValueDesc(value_node,first)));
1834                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,first));
1835
1836                                 add_bezier(bezier);
1837                                 bezier=0;
1838                         }
1839                         return true;
1840                 }
1841                 else // Check for DynamicList
1842                 if(value_desc.is_value_node() &&
1843                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1844                 {
1845                         ValueNode_DynamicList::Handle value_node;
1846                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1847                         int i;
1848
1849                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1850                         {
1851                                 Bezier bezier;
1852                                 etl::handle<Duck> first_duck, duck;
1853                                 int first = -1;
1854                                 for(i=0;i<value_node->link_count();i++)
1855                                 {
1856                                         if(!value_node->list[i].status_at_time(get_time()))
1857                                                 continue;
1858                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1859                                                 return false;
1860                                         duck = last_duck();
1861
1862                                         // remember the index of the first vertex we didn't skip
1863                                         if (first == -1)
1864                                         {
1865                                                 first = i;
1866                                                 first_duck = duck;
1867                                         }
1868
1869                                         if(param_desc && !param_desc->get_origin().empty())
1870                                         {
1871                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1872                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1873                                                 duck->set_origin(last_duck());
1874 /*
1875                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1876                                                 if(value.same_type_as(synfig::Point()))
1877                                                         duck->set_origin(value.get(synfig::Point()));
1878 */
1879 //                                              if(!param_desc->get_origin().empty())
1880 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1881                                         }
1882                                         duck->set_type(Duck::TYPE_VERTEX);
1883                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1884                                         bezier.p2=bezier.c2=duck;
1885
1886                                         if (first != i)
1887                                         {
1888                                                 handle<Bezier> bezier_(new Bezier());
1889                                                 bezier_->p1=bezier.p1;
1890                                                 bezier_->c1=bezier.c1;
1891                                                 bezier_->p2=bezier.p2;
1892                                                 bezier_->c2=bezier.c2;
1893                                                 add_bezier(bezier_);
1894                                                 last_bezier()->signal_user_click(2).connect(
1895                                                         sigc::bind(
1896                                                                 sigc::mem_fun(
1897                                                                         *canvas_view,
1898                                                                         &studio::CanvasView::popup_param_menu_bezier),
1899                                                                 synfigapp::ValueDesc(value_node,i)));
1900                                         }
1901                                 }
1902
1903                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1904                                 {
1905                                         duck = first_duck;
1906
1907                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1908                                         bezier.p2=bezier.c2=duck;
1909
1910                                         handle<Bezier> bezier_(new Bezier());
1911                                         bezier_->p1=bezier.p1;
1912                                         bezier_->c1=bezier.c1;
1913                                         bezier_->p2=bezier.p2;
1914                                         bezier_->c2=bezier.c2;
1915                                         add_bezier(bezier_);
1916                                         last_bezier()->signal_user_click(2).connect(
1917                                                 sigc::bind(
1918                                                         sigc::mem_fun(
1919                                                                 *canvas_view,
1920                                                                 &studio::CanvasView::popup_param_menu_bezier),
1921                                                         synfigapp::ValueDesc(value_node,first)));
1922                                 }
1923                         }
1924                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1925                         {
1926                                 for(i=0;i<value_node->link_count();i++)
1927                                 {
1928                                         if(!value_node->list[i].status_at_time(get_time()))
1929                                                 continue;
1930                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1931                                                 return false;
1932                                 }
1933                         }
1934                         else
1935                                 return false;
1936                 }
1937                 else
1938                 {
1939                         // WRITEME
1940                 }
1941
1942                 return true;
1943         }
1944
1945         break;
1946         default:
1947                 break;
1948         }
1949         return false;
1950 }