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         // drag the vertex and position ducks first
 510         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 511                 if((*iter)->get_type() == Duck::TYPE_VERTEX || (*iter)->get_type() == Duck::TYPE_POSITION)
 512                         (*iter)->set_trans_point(positions[i]+vect);
 513
 514         // then drag the others
 515         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 516                 if((*iter)->get_type() != Duck::TYPE_VERTEX && (*iter)->get_type() != Duck::TYPE_POSITION)
 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                 {
 539                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 540                         {
 541                                 selected_ducks=old_set;
 542                                 throw String("Bad edit");
 543                         }
 544                 }
 545                 else if (App::restrict_radius_ducks &&
 546                                  (*iter)->is_radius())
 547                 {
 548                         Point point((*iter)->get_point());
 549                         bool changed = false;
 550
 551                         if (point[0] < 0)
 552                         {
 553                                 point[0] = 0;
 554                                 changed = true;
 555                         }
 556                         if (point[1] < 0)
 557                         {
 558                                 point[1] = 0;
 559                                 changed = true;
 560                         }
 561
 562                         if (changed) (*iter)->set_point(point);
 563
 564                         if(!(*iter)->signal_edited()(point))
 565                         {
 566                                 selected_ducks=old_set;
 567                                 throw String("Bad edit");
 568                         }
 569                 }
 570                 else
 571                 {
 572                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 573                         {
 574                                 selected_ducks=old_set;
 575                                 throw String("Bad edit");
 576                         }
 577                 }
 578         }
 579         selected_ducks=old_set;
 580 }
 581
 582 void
 583 Duckmatic::signal_user_click_selected_ducks(int button)
 584 {
 585         const DuckList ducks(get_selected_ducks());
 586         DuckList::const_iterator iter;
 587
 588         for(iter=ducks.begin();iter!=ducks.end();++iter)
 589         {
 590                 (*iter)->signal_user_click(button)();
 591         }
 592 }
 593
 594 void
 595 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 596 {
 597         //if(!duck_map.count(duck->get_guid()))
 598         {
 599                 if(duck_data_share_map.count(duck->get_data_guid()))
 600                 {
 601                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 602                 }
 603                 else
 604                 {
 605                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 606                         duck->set_shared_point(point);
 607                         duck_data_share_map[duck->get_data_guid()]=point;
 608                 }
 609
 610                 duck_map.insert(duck);
 611         }
 612
 613         last_duck_guid=duck->get_guid();
 614 }
 615
 616 void
 617 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 618 {
 619         bezier_list_.push_back(bezier);
 620 }
 621
 622 void
 623 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 624 {
 625         assert(stroke_point_list);
 626
 627         std::list<etl::handle<Stroke> >::iterator iter;
 628
 629         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 630         {
 631                 if((*iter)->stroke_data==stroke_point_list)
 632                         return;
 633         }
 634
 635         etl::handle<Stroke> stroke(new Stroke());
 636
 637         stroke->stroke_data=stroke_point_list;
 638         stroke->color=color;
 639
 640         stroke_list_.push_back(stroke);
 641 }
 642
 643 void
 644 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 645 {
 646         add_stroke(stroke_point_list,color);
 647         persistent_stroke_list_.push_back(stroke_list_.back());
 648 }
 649
 650 void
 651 Duckmatic::clear_persistent_strokes()
 652 {
 653         persistent_stroke_list_.clear();
 654 }
 655
 656 void
 657 Duckmatic::set_show_persistent_strokes(bool x)
 658 {
 659         if(x!=show_persistent_strokes)
 660         {
 661                 show_persistent_strokes=x;
 662                 if(x)
 663                         stroke_list_=persistent_stroke_list_;
 664                 else
 665                         stroke_list_.clear();
 666         }
 667 }
 668
 669 void
 670 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 671 {
 672         duck_map.erase(duck->get_guid());
 673 }
 674
 675 etl::handle<Duckmatic::Duck>
 676 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 677 {
 678         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 679         if(iter!=duck_map.end())
 680                 return iter->second;
 681         return 0;
 682
 683 /*      std::list<handle<Duck> >::reverse_iterator iter;
 684
 685         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 686         {
 687                 if(*iter!=duck && **iter==*duck)
 688                 {
 689                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 690                         return *iter;
 691                 }
 692         }
 693         return 0;
 694 */
 695 }
 696
 697 etl::handle<Duckmatic::Duck>
 698 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 699 {
 700         etl::handle<Duck> similar(find_similar_duck(duck));
 701         if(!similar)
 702         {
 703                 add_duck(duck);
 704                 return duck;
 705         }
 706         return similar;
 707 }
 708
 709 void
 710 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 711 {
 712         std::list<handle<Bezier> >::iterator iter;
 713
 714         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 715         {
 716                 if(*iter==bezier)
 717                 {
 718                         bezier_list_.erase(iter);
 719                         return;
 720                 }
 721         }
 722         synfig::warning("Unable to find bezier to erase!");
 723 }
 724
 725 etl::handle<Duckmatic::Duck>
 726 Duckmatic::last_duck()const
 727 {
 728         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 729         if(iter!=duck_map.end())
 730                 return iter->second;
 731         return 0;
 732 }
 733
 734 etl::handle<Duckmatic::Bezier>
 735 Duckmatic::last_bezier()const
 736 {
 737         return bezier_list_.back();
 738 }
 739
 740 etl::handle<Duckmatic::Duck>
 741 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 742 {
 743         if(radius==0)radius=10000000;
 744
 745         if(type==Duck::TYPE_DEFAULT)
 746                 type=get_type_mask();
 747
 748         Real closest(10000000);
 749         etl::handle<Duck> ret;
 750
 751         DuckMap::const_iterator iter;
 752
 753         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 754         {
 755                 const Duck::Handle& duck(iter->second);
 756
 757                 if(duck->get_ignore())
 758                         continue;
 759                 Real dist((duck->get_trans_point()-point).mag_squared());
 760
 761                 if(duck->get_type()&Duck::TYPE_VERTEX)
 762                         dist*=1.0001;
 763                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 764                         dist*=0.9999;
 765
 766                 if(dist<=closest && !( duck->get_type() && (!(type & duck->get_type())) ) )
 767                 {
 768                         {
 769                                 closest=dist;
 770                                 ret=duck;
 771                         }
 772                 }
 773         }
 774
 775         if(radius==0 || closest<radius*radius)
 776                 return ret;
 777
 778         return 0;
 779 }
 780
 781 etl::handle<Duckmatic::Bezier>
 782 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 783 {
 784         return find_bezier(point,radius,radius,location);
 785 }
 786
 787 etl::handle<Duckmatic::Bezier>
 788 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 789 {
 790         if(radius==0)radius=10000000;
 791         Real closest(10000000);
 792         etl::handle<Bezier> ret;
 793
 794         bezier<Point>   curve;
 795
 796         Real    d,step;
 797         float   time = 0;
 798         float   best_time = 0;
 799
 800         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 801         {
 802                 curve[0] = (*iter)->p1->get_trans_point();
 803                 curve[1] = (*iter)->c1->get_trans_point();
 804                 curve[2] = (*iter)->c2->get_trans_point();
 805                 curve[3] = (*iter)->p2->get_trans_point();
 806                 curve.sync();
 807
 808 #if 0
 809                 // I don't know why this doesn't work
 810                 time=curve.find_closest(pos,6);
 811                 d=((curve(time)-pos).mag_squared());
 812
 813 #else
 814                 //set the step size based on the size of the picture
 815                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 816
 817                 step = d/(2*scale); //want to make the distance between lines happy
 818
 819                 step = max(step,0.01); //100 samples should be plenty
 820                 step = min(step,0.1); //10 is minimum
 821
 822                 d = find_closest(curve,pos,step,&closest,&time);
 823 #endif
 824
 825                 if(d < closest)
 826                 {
 827                         closest = d;
 828                         ret = *iter;
 829                         best_time=time;
 830                 }
 831         }
 832
 833         if(closest < radius*radius)
 834         {
 835                 if(location)
 836                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 837
 838                 return ret;
 839         }
 840
 841         return 0;
 842 }
 843
 844 bool
 845 Duckmatic::save_sketch(const synfig::String& filename)const
 846 {
 847         ChangeLocale change_locale(LC_NUMERIC, "C");
 848         std::ofstream file(filename.c_str());
 849
 850         if(!file)return false;
 851
 852         file<<"SKETCH"<<endl;
 853
 854         std::list<etl::handle<Stroke> >::const_iterator iter;
 855
 856         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 857         {
 858                 file<<"C "
 859                         <<(*iter)->color.get_r()<<' '
 860                         <<(*iter)->color.get_g()<<' '
 861                         <<(*iter)->color.get_b()
 862                 <<endl;
 863                 std::list<synfig::Point>::const_iterator viter;
 864                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 865                 {
 866                         file<<"V "
 867                                 <<(*viter)[0]<<' '
 868                                 <<(*viter)[1]
 869                         <<endl;
 870                 }
 871         }
 872         if(!file)return false;
 873         sketch_filename_=filename;
 874         signal_sketch_saved_();
 875         return true;
 876 }
 877
 878 bool
 879 Duckmatic::load_sketch(const synfig::String& filename)
 880 {
 881         ChangeLocale change_locale(LC_NUMERIC, "C");
 882         std::ifstream file(filename.c_str());
 883
 884         if(!file)
 885                 return false;
 886
 887         std::string line;
 888         getline(file,line);
 889
 890         if(line!="SKETCH")
 891         {
 892                 synfig::error("Not a sketch");
 893                 return false;
 894         }
 895
 896         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 897
 898         while(file)
 899         {
 900                 getline(file,line);
 901
 902                 if(line.empty())
 903                         continue;
 904
 905                 switch(line[0])
 906                 {
 907                 case 'C':
 908                 case 'c':
 909                         {
 910                                 stroke_data.spawn();
 911                                 float r,g,b;
 912                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
 913                                 {
 914                                         synfig::warning("Bad color line \"%s\"",line.c_str());
 915                                         r=0;g=0;b=0;
 916                                 }
 917                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
 918                         }
 919                         break;
 920                 case 'V':
 921                 case 'v':
 922                         if(!stroke_data)
 923                         {
 924                                 stroke_data.spawn();
 925                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
 926                         }
 927                         float x,y;
 928                         if(!strscanf(line,"V %f %f",&x, &y))
 929                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
 930                         else
 931                                 stroke_data->push_back(synfig::Vector(x,y));
 932                         break;
 933                 default:
 934                         synfig::warning("Unexpected sketch token '%c'",line[0]);
 935                         break;
 936                 }
 937         }
 938
 939         sketch_filename_=filename;
 940         return true;
 941 }
 942
 943 Duckmatic::Push::Push(Duckmatic *duckmatic_):
 944         duckmatic_(duckmatic_)
 945 {
 946         duck_map=duckmatic_->duck_map;
 947         bezier_list_=duckmatic_->bezier_list_;
 948         duck_data_share_map=duckmatic_->duck_data_share_map;
 949         stroke_list_=duckmatic_->stroke_list_;
 950         duck_dragger_=duckmatic_->duck_dragger_;
 951         needs_restore=true;
 952 }
 953
 954 Duckmatic::Push::~Push()
 955 {
 956         if(needs_restore)
 957                 restore();
 958 }
 959
 960 void
 961 Duckmatic::Push::restore()
 962 {
 963         duckmatic_->duck_map=duck_map;
 964         duckmatic_->bezier_list_=bezier_list_;
 965         duckmatic_->duck_data_share_map=duck_data_share_map;
 966         duckmatic_->stroke_list_=stroke_list_;
 967         duckmatic_->duck_dragger_=duck_dragger_;
 968         needs_restore=false;
 969 }
 970
 971 inline String guid_string(const synfigapp::ValueDesc& x)
 972 {
 973         if(x.parent_is_layer_param())
 974                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
 975         //if(x.is_value_node())
 976                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
 977 }
 978
 979 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
 980 {
 981         synfig::GUID ret(0);
 982
 983         if(x.parent_is_layer_param())
 984         {
 985                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
 986         }
 987         else
 988         {
 989                 ret=x.get_value_node()->get_guid();
 990         }
 991
 992         ret^=transform_stack.get_guid();
 993         return ret;
 994 }
 995
 996 /*
 997 Duck::Handle
 998 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)
 999 {
1000         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1001         etl::handle<Duck> duck=new Duck();
1002
1003         return duck;
1004 }
1005 */
1006
1007 bool
1008 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)
1009 {
1010         ValueBase::Type type=value_desc.get_value_type();
1011 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1012         switch(type)
1013         {
1014         case ValueBase::TYPE_REAL:
1015
1016                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1017                 {
1018                         etl::handle<Duck> duck=new Duck();
1019                         duck->set_transform_stack(transform_stack);
1020                         duck->set_radius(true);
1021                         duck->set_type(Duck::TYPE_RADIUS);
1022
1023                         // put the duck on the right hand side of the center
1024                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1025                         duck->set_name(guid_string(value_desc));
1026                         if(value_desc.is_value_node())
1027                         {
1028                                 // If the ValueNode can be directly manipulated,
1029                                 // then set it as so.
1030                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1031                         }
1032                         else
1033                         {
1034                                 duck->set_editable(true);
1035                         }
1036
1037                         if(param_desc && param_desc!=REAL_COOKIE)
1038                         {
1039                                 if(!param_desc->get_origin().empty())
1040                                 {
1041                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1042                                         /*
1043                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1044                                         */
1045                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1046                                         duck->set_origin(last_duck());
1047                                 }
1048                                 duck->set_scalar(param_desc->get_scalar());
1049                         }
1050
1051                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1052                         duck->signal_edited().connect(
1053                                 sigc::bind(
1054                                         sigc::mem_fun(
1055                                                 *canvas_view,
1056                                                 &studio::CanvasView::on_duck_changed),
1057                                         value_desc));
1058                         duck->set_value_desc(value_desc);
1059
1060                         duck->signal_user_click(2).connect(
1061                                 sigc::bind(
1062                                         sigc::bind(
1063                                                 sigc::bind(
1064                                                         sigc::mem_fun(
1065                                                                 *canvas_view,
1066                                                                 &studio::CanvasView::popup_param_menu),
1067                                                         false),
1068                                                 0.0f),
1069                                         value_desc));
1070
1071                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1072
1073                         add_duck(duck);
1074
1075                         return true;
1076                 }
1077                 break;
1078
1079         case ValueBase::TYPE_ANGLE:
1080
1081                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1082                 {
1083                         etl::handle<Duck> duck=new Duck();
1084                         duck->set_type(Duck::TYPE_ANGLE);
1085                         duck->set_transform_stack(transform_stack);
1086                         synfig::Angle angle;
1087
1088                         angle=value_desc.get_value(get_time()).get(Angle());
1089                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1090                         duck->set_name(guid_string(value_desc));
1091                         if(value_desc.is_value_node())
1092                         {
1093                                 ValueNode::Handle value_node=value_desc.get_value_node();
1094                                 //duck->set_name(strprintf("%x",value_node.get()));
1095
1096                                 // If the ValueNode can be directly manipulated,
1097                                 // then set it as so.
1098                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1099                         }
1100                         else
1101                         {
1102                                 //angle=(value_desc.get_value().get(Angle()));
1103                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1104                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1105                                 duck->set_editable(true);
1106                         }
1107
1108                         if(param_desc && param_desc!=REAL_COOKIE)
1109                         {
1110                                 if(!param_desc->get_origin().empty())
1111                                 {
1112                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1113                                         /*
1114                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1115                                         */
1116                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1117                                         duck->set_origin(last_duck());
1118                                 }
1119                                 duck->set_scalar(param_desc->get_scalar());
1120                         }
1121
1122                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1123                         duck->signal_edited_angle().clear();
1124                         duck->signal_edited_angle().connect(
1125                                 sigc::bind(
1126                                         sigc::mem_fun(
1127                                                 *canvas_view,
1128                                                 &studio::CanvasView::on_duck_angle_changed),
1129                                         value_desc));
1130                         duck->set_value_desc(value_desc);
1131
1132                         duck->signal_user_click(2).connect(
1133                                 sigc::bind(
1134                                         sigc::bind(
1135                                                 sigc::bind(
1136                                                         sigc::mem_fun(
1137                                                                 *canvas_view,
1138                                                                 &studio::CanvasView::popup_param_menu),
1139                                                         false),
1140                                                 0.0f),
1141                                         value_desc));
1142                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1143
1144                         add_duck(duck);
1145
1146                         return true;
1147                 }
1148                 break;
1149
1150         case ValueBase::TYPE_VECTOR:
1151                 {
1152                         etl::handle<Duck> duck=new Duck();
1153                         duck->set_transform_stack(transform_stack);
1154
1155                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1156                         duck->set_name(guid_string(value_desc));
1157                         if(value_desc.is_value_node())
1158                         {
1159                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1160
1161                                 // If the ValueNode can be directly manipulated,
1162                                 // then set it as so.
1163                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1164                         }
1165                         else
1166                         {
1167                                 //duck->set_point(value_desc.get_value().get(Point()));
1168                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1169                                 duck->set_editable(true);
1170                         }
1171
1172                         // If we were passed a parameter description
1173                         if(param_desc)
1174                         {
1175                                 if(!param_desc->get_connect().empty())
1176                                 {
1177                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1178                                         Duck::Handle connect_duck;
1179                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1180                                         {
1181                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1182                                         }
1183                                         else
1184                                         {
1185                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1186                                                 connect_duck=last_duck();
1187                                         }
1188                                         duck->set_connect_duck(connect_duck);
1189                                 }
1190                                 if(!param_desc->get_box().empty())
1191                                 {
1192                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1193                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1194                                         duck->set_box_duck(last_duck());
1195                                 }
1196
1197                                 // If we have an origin
1198                                 if(!param_desc->get_origin().empty())
1199                                 {
1200                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1201                                         /*
1202                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1203                                         */
1204                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1205                                         duck->set_origin(last_duck());
1206                                         duck->set_type(Duck::TYPE_VERTEX);
1207                                 }
1208                                 else
1209                                         duck->set_type(Duck::TYPE_POSITION);
1210
1211                                 duck->set_scalar(param_desc->get_scalar());
1212                         }
1213                         else
1214                                 duck->set_type(Duck::TYPE_POSITION);
1215
1216                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1217                         duck->signal_edited().connect(
1218                                 sigc::bind(
1219                                         sigc::mem_fun(
1220                                                 *canvas_view,
1221                                                 &studio::CanvasView::on_duck_changed),
1222                                         value_desc));
1223                         duck->set_value_desc(value_desc);
1224
1225                         duck->signal_user_click(2).connect(
1226                                 sigc::bind(
1227                                         sigc::bind(
1228                                                 sigc::bind(
1229                                                         sigc::mem_fun(
1230                                                                 *canvas_view,
1231                                                                 &studio::CanvasView::popup_param_menu),
1232                                                         false),
1233                                                 1.0f),
1234                                         value_desc));
1235                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1236                         add_duck(duck);
1237
1238                         return true;
1239                 }
1240                 break;
1241         case ValueBase::TYPE_SEGMENT:
1242                 {
1243                         etl::handle<Bezier> bezier(new Bezier());
1244                         ValueNode_Composite::Handle value_node;
1245
1246                         if(value_desc.is_value_node() &&
1247                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1248                         {
1249                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1250                                         return false;
1251                                 bezier->p1=last_duck();
1252                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1253                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1254                                         return false;
1255                                 bezier->c1=last_duck();
1256                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1257                                 bezier->c1->set_origin(bezier->p1);
1258                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1259                                 bezier->c1->set_tangent(true);
1260
1261                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1262                                         return false;
1263                                 bezier->p2=last_duck();
1264                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1265                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1266                                         return false;
1267                                 bezier->c2=last_duck();
1268                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1269                                 bezier->c2->set_origin(bezier->p2);
1270                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1271                                 bezier->c2->set_tangent(true);
1272
1273                                 bezier->signal_user_click(2).connect(
1274                                         sigc::bind(
1275                                                 sigc::mem_fun(
1276                                                         *canvas_view,
1277                                                         &studio::CanvasView::popup_param_menu_bezier),
1278                                                 value_desc));
1279
1280                                 add_bezier(bezier);
1281                         }
1282                         else if(value_desc.get_value().is_valid())
1283                         {
1284                                 Segment segment=value_desc.get_value();
1285                                 etl::handle<Duck> duck_p,duck_c;
1286                                 synfig::String name;
1287                                 if(param_desc)
1288                                 {
1289                                         name=param_desc->get_local_name();
1290                                 }
1291                                 else
1292                                 {
1293                                         name=guid_string(value_desc);
1294                                 }
1295
1296                                 duck_p=new Duck(segment.p1);
1297                                 duck_p->set_name(name+".P1");
1298                                 duck_p->set_type(Duck::TYPE_VERTEX);
1299                                 add_duck(duck_p);
1300
1301                                 duck_c=new Duck(segment.t1);
1302                                 duck_c->set_name(name+".T1");
1303                                 duck_c->set_type(Duck::TYPE_TANGENT);
1304                                 add_duck(duck_c);
1305                                 duck_c->set_origin(duck_p);
1306                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1307                                 duck_c->set_tangent(true);
1308
1309                                 bezier->p1=duck_p;
1310                                 bezier->c1=duck_c;
1311
1312                                 duck_p=new Duck(segment.p2);
1313                                 duck_p->set_name(name+".P2");
1314                                 duck_p->set_type(Duck::TYPE_VERTEX);
1315                                 add_duck(duck_p);
1316
1317                                 duck_c=new Duck(segment.t2);
1318                                 duck_c->set_type(Duck::TYPE_TANGENT);
1319                                 duck_c->set_name(name+".T2");
1320                                 add_duck(duck_c);
1321                                 duck_c->set_origin(duck_p);
1322                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1323                                 duck_c->set_tangent(true);
1324
1325                                 bezier->p2=duck_p;
1326                                 bezier->c2=duck_c;
1327                                 add_bezier(bezier);
1328                         }
1329
1330                         return true;
1331                 }
1332                 break;
1333         case ValueBase::TYPE_BLINEPOINT:
1334         {
1335
1336                 if(value_desc.is_value_node() &&
1337                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1338                 {
1339                         ValueNode_Composite::Handle value_node;
1340                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1341
1342                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1343                                 return false;
1344                         etl::handle<Duck> vertex_duck(last_duck());
1345                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1346                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1347                                 return false;
1348                         etl::handle<Duck> t1_duck(last_duck());
1349
1350                         t1_duck->set_origin(vertex_duck);
1351                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1352                         t1_duck->set_tangent(true);
1353
1354                         etl::handle<Duck> t2_duck;
1355
1356                         // If the tangents are split
1357                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1358                         {
1359                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1360                                         return false;
1361                                 t2_duck=last_duck();
1362                                 t2_duck->set_origin(vertex_duck);
1363                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1364                                 t2_duck->set_tangent(true);
1365                         }
1366                         else
1367                         {
1368                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1369                                         return false;
1370                                 t2_duck=last_duck();
1371                                 t2_duck->set_origin(vertex_duck);
1372                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1373                                 t2_duck->set_tangent(true);
1374                         }
1375                         return true;
1376                 }
1377
1378         }
1379         break;
1380         case ValueBase::TYPE_LIST:
1381         {
1382                 // Check for BLine
1383                 if (value_desc.is_value_node() &&
1384                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1385                 {
1386                         ValueNode_BLine::Handle value_node;
1387                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1388
1389                         int i,first=-1;
1390
1391                         etl::handle<Bezier> bezier;
1392                         etl::handle<Duck> first_duck;
1393                         etl::handle<Duck> duck, tduck;
1394
1395                         for (i = 0; i < value_node->link_count(); i++)
1396                         {
1397                                 float amount(value_node->list[i].amount_at_time(get_time()));
1398
1399                                 // skip vertices that aren't fully on
1400                                 if (amount < 0.9999f)
1401                                         continue;
1402
1403                                 // remember the index of the first vertex we didn't skip
1404                                 if (first == -1)
1405                                         first = i;
1406
1407                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1408
1409                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1410                                 ValueNode_Composite::Handle composite_vertex_value_node(
1411                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1412
1413                                 // add the vertex duck - it's a composite
1414                                 if(composite_vertex_value_node)
1415                                 {
1416                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1417                                         {
1418                                                 duck=last_duck();
1419                                                 if(i==first)
1420                                                         first_duck=duck;
1421                                                 duck->set_type(Duck::TYPE_VERTEX);
1422
1423                                                 duck->signal_user_click(2).clear();
1424                                                 duck->signal_user_click(2).connect(
1425                                                         sigc::bind(
1426                                                                 sigc::bind(
1427                                                                         sigc::bind(
1428                                                                                 sigc::mem_fun(
1429                                                                                         *canvas_view,
1430                                                                                         &studio::CanvasView::popup_param_menu),
1431                                                                                 false),
1432                                                                         1.0f),
1433                                                                 synfigapp::ValueDesc(value_node,i)));
1434
1435                                                 if(param_desc)
1436                                                 {
1437                                                         if(!param_desc->get_origin().empty())
1438                                                         {
1439                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1440                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1441                                                                 duck->set_origin(last_duck());
1442 /*
1443                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1444                                                                 if(value.same_type_as(synfig::Point()))
1445                                                                         duck->set_origin(value.get(synfig::Point()));
1446 */
1447                                                         }
1448                                                 }
1449                                         }
1450                                         else
1451                                                 return false;
1452                                 }
1453                                 // else it's not a composite
1454                                 else
1455                                 {
1456                                         duck=new Duck(bline_point.get_vertex());
1457                                         if(i==first)
1458                                                 first_duck=duck;
1459                                         duck->set_transform_stack(transform_stack);
1460                                         duck->set_editable(false);
1461                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1462                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1463
1464                                         duck->set_type(Duck::TYPE_VERTEX);
1465                                         if(param_desc)
1466                                         {
1467                                                 if(!param_desc->get_origin().empty())
1468                                                 {
1469                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1470                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1471                                                                 duck->set_origin(last_duck());
1472 /*
1473                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1474                                                                 if(value.same_type_as(synfig::Point()))
1475                                                                         duck->set_origin(value.get(synfig::Point()));
1476 */
1477                                                 }
1478                                         }
1479                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1480                                         duck=add_similar_duck(duck);
1481 //                                      add_duck(duck);
1482                                 }
1483
1484                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1485                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1486                                         !param_desc)
1487                                 {
1488                                         etl::handle<Duck> width;
1489                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1490                                         {
1491                                                 width=last_duck();
1492                                                 width->set_origin(duck);
1493                                                 width->set_type(Duck::TYPE_WIDTH);
1494                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1495
1496                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1497                                                 if (param_desc)
1498                                                 {
1499                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1500                                                         if(value.same_type_as(synfig::Real()))
1501                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1502                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1503                                                         else
1504                                                                 width->set_scalar(0.5f);
1505                                                 }
1506                                                 // otherwise just present the raw unscaled width
1507                                                 else
1508                                                         width->set_scalar(0.5f);
1509                                         }
1510                                         else
1511                                                 synfig::error("Unable to add width duck!");
1512                                 }
1513
1514                                 // each bezier uses t2 of one point and t1 of the next
1515                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1516                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1517                                 if(bezier)
1518                                 {
1519                                         // Add the tangent1 duck
1520                                         if(composite_vertex_value_node)
1521                                         {
1522                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1523                                                         return false;
1524                                                 tduck=last_duck();
1525                                         }
1526                                         else
1527                                         {
1528                                                 tduck=new Duck(bline_point.get_tangent1());
1529                                                 tduck->set_transform_stack(transform_stack);
1530                                                 tduck->set_editable(false);
1531                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1532 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1533                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1534                                                 tduck=add_similar_duck(tduck);
1535 //                                              add_duck(duck);
1536                                         }
1537
1538                                         tduck->set_origin(duck);
1539                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1540                                         tduck->set_tangent(true);
1541
1542                                         bezier->p2=duck;
1543                                         bezier->c2=tduck;
1544
1545                                         bezier->signal_user_click(2).connect(
1546                                                 sigc::bind(
1547                                                         sigc::mem_fun(
1548                                                                 *canvas_view,
1549                                                                 &studio::CanvasView::popup_param_menu_bezier),
1550                                                         synfigapp::ValueDesc(value_node,i)));
1551
1552                                         duck->signal_user_click(2).clear();
1553                                         duck->signal_user_click(2).connect(
1554                                                 sigc::bind(
1555                                                         sigc::bind(
1556                                                                 sigc::bind(
1557                                                                         sigc::mem_fun(
1558                                                                                 *canvas_view,
1559                                                                                 &studio::CanvasView::popup_param_menu),
1560                                                                         false),
1561                                                                 1.0f),
1562                                                         synfigapp::ValueDesc(value_node,i)));
1563
1564                                         add_bezier(bezier);
1565                                         bezier=0;
1566                                 }
1567
1568                                 // don't start a new bezier for the last point in the line if we're not looped
1569                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1570                                         continue;
1571
1572                                 bezier=new Bezier();
1573
1574                                 // Add the tangent2 duck
1575                                 if(composite_vertex_value_node)
1576                                 {
1577                                         int i=bline_point.get_split_tangent_flag()?5:4;
1578                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1579                                                 return false;
1580                                         tduck=last_duck();
1581                                 }
1582                                 else
1583                                 {
1584                                         if(bline_point.get_split_tangent_flag())
1585                                                 tduck=new Duck(bline_point.get_tangent2());
1586                                         else
1587                                                 tduck=new Duck(bline_point.get_tangent1());
1588
1589                                         tduck->set_transform_stack(transform_stack);
1590                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1591                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1592                                         tduck->set_editable(false);
1593                                         tduck=add_similar_duck(tduck);
1594 //                                      add_duck(duck);
1595                                         if(param_desc)
1596                                         {
1597                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1598                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1599                                                                 duck->set_origin(last_duck());
1600 /*
1601                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1602                                                                 if(value.same_type_as(synfig::Point()))
1603                                                                         duck->set_origin(value.get(synfig::Point()));
1604 */
1605 //                                              if(!param_desc->get_origin().empty())
1606 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1607                                         }
1608                                         duck->signal_user_click(2).clear();
1609                                         duck->signal_user_click(2).connect(
1610                                                 sigc::bind(
1611                                                         sigc::bind(
1612                                                                 sigc::bind(
1613                                                                         sigc::mem_fun(
1614                                                                                 *canvas_view,
1615                                                                                 &studio::CanvasView::popup_param_menu),
1616                                                                         false),
1617                                                                 1.0f),
1618                                                         synfigapp::ValueDesc(value_node,i)));
1619
1620                                 }
1621
1622                                 tduck->set_origin(duck);
1623                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1624                                 tduck->set_tangent(true);
1625
1626                                 bezier->p1=duck;
1627                                 bezier->c1=tduck;
1628                         }
1629
1630                         // Loop if necessary
1631                         if(bezier && value_node->get_loop())
1632                         {
1633                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1634
1635                                 ValueNode_Composite::Handle composite_vertex_value_node(
1636                                         ValueNode_Composite::Handle::cast_dynamic(
1637                                                 value_node->get_link(first)));
1638
1639                                 // Add the vertex duck
1640                                 duck=first_duck;
1641
1642                                 // Add the tangent1 duck
1643                                 if(composite_vertex_value_node)
1644                                 {
1645                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1646                                                 return false;
1647                                         tduck=last_duck();
1648                                 }
1649                                 else
1650                                 {
1651                                         tduck=new Duck(bline_point.get_tangent1());
1652                                         tduck->set_transform_stack(transform_stack);
1653                                         tduck->set_editable(false);
1654                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1655                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1656                                         tduck=add_similar_duck(tduck);
1657                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1658                                         //add_duck(duck);
1659                                 }
1660
1661                                 tduck->set_origin(duck);
1662                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1663                                 tduck->set_tangent(true);
1664
1665                                 bezier->p2=duck;
1666                                 bezier->c2=tduck;
1667
1668                                 bezier->signal_user_click(2).connect(
1669                                         sigc::bind(
1670                                                 sigc::mem_fun(
1671                                                         *canvas_view,
1672                                                         &studio::CanvasView::popup_param_menu_bezier),
1673                                                 synfigapp::ValueDesc(value_node,first)));
1674
1675                                 duck->signal_user_click(2).clear();
1676                                 duck->signal_user_click(2).connect(
1677                                         sigc::bind(
1678                                                 sigc::bind(
1679                                                         sigc::bind(
1680                                                                 sigc::mem_fun(
1681                                                                         *canvas_view,
1682                                                                         &studio::CanvasView::popup_param_menu),
1683                                                                 false),
1684                                                         1.0f),
1685                                                 synfigapp::ValueDesc(value_node,first)));
1686
1687                                 add_bezier(bezier);
1688                                 bezier=0;
1689                         }
1690                         return true;
1691                 }
1692                 else // Check for DynamicList
1693                 if(value_desc.is_value_node() &&
1694                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1695                 {
1696                         ValueNode_DynamicList::Handle value_node;
1697                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1698                         int i;
1699
1700                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1701                         {
1702                                 Bezier bezier;
1703                                 etl::handle<Duck> first_duck, duck;
1704                                 int first = -1;
1705                                 for(i=0;i<value_node->link_count();i++)
1706                                 {
1707                                         if(!value_node->list[i].status_at_time(get_time()))
1708                                                 continue;
1709                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1710                                                 return false;
1711                                         duck = last_duck();
1712
1713                                         // remember the index of the first vertex we didn't skip
1714                                         if (first == -1)
1715                                         {
1716                                                 first = i;
1717                                                 first_duck = duck;
1718                                         }
1719
1720                                         if(param_desc)
1721                                         {
1722                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1723                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1724                                                                 duck->set_origin(last_duck());
1725 /*
1726                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1727                                                                 if(value.same_type_as(synfig::Point()))
1728                                                                         duck->set_origin(value.get(synfig::Point()));
1729 */
1730 //                                              if(!param_desc->get_origin().empty())
1731 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1732                                         }
1733                                         duck->set_type(Duck::TYPE_VERTEX);
1734                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1735                                         bezier.p2=bezier.c2=duck;
1736
1737                                         if (first != i)
1738                                         {
1739                                                 handle<Bezier> bezier_(new Bezier());
1740                                                 bezier_->p1=bezier.p1;
1741                                                 bezier_->c1=bezier.c1;
1742                                                 bezier_->p2=bezier.p2;
1743                                                 bezier_->c2=bezier.c2;
1744                                                 add_bezier(bezier_);
1745                                                 last_bezier()->signal_user_click(2).connect(
1746                                                         sigc::bind(
1747                                                                 sigc::mem_fun(
1748                                                                         *canvas_view,
1749                                                                         &studio::CanvasView::popup_param_menu_bezier),
1750                                                                 synfigapp::ValueDesc(value_node,i)));
1751                                         }
1752                                 }
1753
1754                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1755                                 {
1756                                         duck = first_duck;
1757
1758                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1759                                         bezier.p2=bezier.c2=duck;
1760
1761                                         handle<Bezier> bezier_(new Bezier());
1762                                         bezier_->p1=bezier.p1;
1763                                         bezier_->c1=bezier.c1;
1764                                         bezier_->p2=bezier.p2;
1765                                         bezier_->c2=bezier.c2;
1766                                         add_bezier(bezier_);
1767                                         last_bezier()->signal_user_click(2).connect(
1768                                                 sigc::bind(
1769                                                         sigc::mem_fun(
1770                                                                 *canvas_view,
1771                                                                 &studio::CanvasView::popup_param_menu_bezier),
1772                                                         synfigapp::ValueDesc(value_node,first)));
1773                                 }
1774                         }
1775                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1776                         {
1777                                 for(i=0;i<value_node->link_count();i++)
1778                                 {
1779                                         if(!value_node->list[i].status_at_time(get_time()))
1780                                                 continue;
1781                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1782                                                 return false;
1783                                 }
1784                         }
1785                         else
1786                                 return false;
1787                 }
1788                 else
1789                 {
1790                         // WRITEME
1791                 }
1792
1793                 return true;
1794         }
1795
1796         break;
1797         default:
1798                 break;
1799         }
1800         return false;
1801 }