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

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