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