synfig-studio/trunk/src/gtkmm/duckmatic.cpp

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