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