synfig-studio/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 **      Copyright (c) 2009 Nikita Kitaev
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33 #include <fstream>
  34 #include <iostream>
  35 #include <algorithm>
  36
  37 #include <ETL/hermite>
  38
  39 #include "duckmatic.h"
  40 #include <synfigapp/value_desc.h>
  41 #include <synfig/general.h>
  42 #include <synfig/paramdesc.h>
  43 #include <synfig/valuenode_timedswap.h>
  44 #include <synfig/valuenode_animated.h>
  45 #include <synfig/valuenode_composite.h>
  46 #include <synfig/valuenode_scale.h>
  47 #include <synfig/valuenode_bline.h>
  48 #include <synfig/valuenode_blinecalctangent.h>
  49 #include <synfig/valuenode_blinecalcvertex.h>
  50 #include <synfig/valuenode_blinecalcwidth.h>
  51
  52 #include <synfig/curve_helper.h>
  53
  54 #include <sigc++/retype_return.h>
  55 #include <sigc++/retype.h>
  56 #include <sigc++/hide.h>
  57 #include <sigc++/bind.h>
  58
  59 #include "canvasview.h"
  60
  61 #include "onemoment.h"
  62
  63 #include "general.h"
  64
  65 #endif
  66
  67 /* === U S I N G =========================================================== */
  68
  69 using namespace std;
  70 using namespace etl;
  71 using namespace synfig;
  72 using namespace studio;
  73
  74 /* === M A C R O S ========================================================= */
  75
  76 /* 0.33333333333333333 makes for nice short tangent handles,
  77    1.0 makes them draw as their real length */
  78 #define TANGENT_HANDLE_SCALE 0.33333333333333333
  79
  80 /* leave this alone or the bezier won't lie on top of the bline */
  81 #define TANGENT_BEZIER_SCALE 0.33333333333333333
  82
  83 /* === G L O B A L S ======================================================= */
  84
  85 /* === P R O C E D U R E S ================================================= */
  86
  87 /* === M E T H O D S ======================================================= */
  88
  89 /* === E N T R Y P O I N T ================================================= */
  90
  91 Duckmatic::Duckmatic():
  92         type_mask(Duck::TYPE_ALL-Duck::TYPE_WIDTH),
  93         grid_snap(false),
  94         guide_snap(false),
  95         grid_size(1.0/4.0,1.0/4.0),
  96         show_persistent_strokes(true)
  97 {
  98         axis_lock=false;
  99         drag_offset_=Point(0,0);
 100         clear_duck_dragger();
 101 }
 102
 103 Duckmatic::~Duckmatic()
 104 {
 105         clear_ducks();
 106
 107         if (Duck::duck_count)
 108                 synfig::error("%d ducks not yet deleted!", Duck::duck_count);
 109
 110         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
 111                 synfig::info("Duckmatic::~Duckmatic(): Deleted");
 112 }
 113
 114 void
 115 Duckmatic::clear_ducks()
 116 {
 117         duck_data_share_map.clear();
 118         duck_map.clear();
 119
 120         //duck_list_.clear();
 121         bezier_list_.clear();
 122         stroke_list_.clear();
 123
 124         if(show_persistent_strokes)
 125                 stroke_list_=persistent_stroke_list_;
 126 }
 127
 128 //! Returns \a true if the given duck is currently selected
 129 bool
 130 Duckmatic::duck_is_selected(const etl::handle<Duck> &duck)const
 131 {
 132         return duck && selected_ducks.count(duck->get_guid());
 133 }
 134
 135 void
 136 Duckmatic::set_grid_size(const synfig::Vector &s)
 137 {
 138         if(grid_size!=s)
 139         {
 140                 grid_size=s;
 141                 signal_grid_changed();
 142         }
 143 }
 144
 145 void
 146 Duckmatic::set_grid_snap(bool x)
 147 {
 148         if(grid_snap!=x)
 149         {
 150                 grid_snap=x;
 151                 signal_grid_changed();
 152         }
 153 }
 154
 155 void
 156 Duckmatic::set_guide_snap(bool x)
 157 {
 158         if(guide_snap!=x)
 159         {
 160                 guide_snap=x;
 161                 signal_grid_changed();
 162         }
 163 }
 164
 165 Duckmatic::GuideList::iterator
 166 Duckmatic::find_guide_x(synfig::Point pos, float radius)
 167 {
 168         GuideList::iterator iter,best(guide_list_x_.end());
 169         float dist(radius);
 170         for(iter=guide_list_x_.begin();iter!=guide_list_x_.end();++iter)
 171         {
 172                 float amount(abs(*iter-pos[0]));
 173                 if(amount<dist)
 174                 {
 175                         dist=amount;
 176                         best=iter;
 177                 }
 178         }
 179         return best;
 180 }
 181
 182 Duckmatic::GuideList::iterator
 183 Duckmatic::find_guide_y(synfig::Point pos, float radius)
 184 {
 185         GuideList::iterator iter,best(guide_list_y_.end());
 186         float dist(radius);
 187         for(iter=guide_list_y_.begin();iter!=guide_list_y_.end();++iter)
 188         {
 189                 float amount(abs(*iter-pos[1]));
 190                 if(amount<=dist)
 191                 {
 192                         dist=amount;
 193                         best=iter;
 194                 }
 195         }
 196         return best;
 197 }
 198
 199 void
 200 Duckmatic::clear_selected_ducks()
 201 {
 202         selected_ducks.clear();
 203         signal_duck_selection_changed_();
 204 }
 205
 206 etl::handle<Duckmatic::Duck>
 207 Duckmatic::get_selected_duck()const
 208 {
 209         if(selected_ducks.empty() || duck_map.empty())
 210                 return 0;
 211         return duck_map.find(*selected_ducks.begin())->second;
 212 }
 213
 214 void
 215 Duckmatic::refresh_selected_ducks()
 216 {
 217 /*
 218         std::set<etl::handle<Duck> >::iterator iter;
 219         std::set<etl::handle<Duck> > new_set;
 220         if(duck_list().empty())
 221         {
 222                 selected_duck_list.clear();
 223                 signal_duck_selection_changed_();
 224                 return;
 225         }
 226
 227         for(iter=selected_duck_list.begin();iter!=selected_duck_list.end();++iter)
 228         {
 229                 etl::handle<Duck> similar(find_similar_duck(*iter));
 230                 if(similar)
 231                 {
 232                         new_set.insert(similar);
 233                 }
 234         }
 235         selected_duck_list=new_set;
 236 */
 237         GUIDSet old_set(selected_ducks);
 238         GUIDSet::const_iterator iter;
 239
 240         for(iter=old_set.begin();iter!=old_set.end();++iter)
 241         {
 242                 if(duck_map.count(*iter)==0)
 243                         selected_ducks.erase(*iter);
 244         }
 245
 246         signal_duck_selection_changed_();
 247 }
 248
 249 bool
 250 Duckmatic::is_duck_group_selectable(const etl::handle<Duck>& x)const
 251 {
 252         const Type type(get_type_mask());
 253
 254         if (((x->get_type() && (!(type & x->get_type()))) ||
 255                  !x->get_editable()))
 256                 return false;
 257
 258         synfigapp::ValueDesc value_desc(x->get_value_desc());
 259         if(value_desc.parent_is_layer_param() && type & Duck::TYPE_POSITION)
 260         {
 261                 Layer::Handle layer(value_desc.get_layer());
 262                 String layer_name(layer->get_name());
 263
 264                 if (layer_name == "outline" || layer_name == "region" || layer_name == "plant" ||
 265                         layer_name == "polygon" || layer_name == "curve_gradient")
 266                         return false;
 267
 268                 if((layer_name=="PasteCanvas"|| layer_name=="paste_canvas") &&
 269                    !layer->get_param("children_lock").get(bool()))
 270                         return false;
 271         }
 272         else if (value_desc.parent_is_value_node())
 273         {
 274                 if (ValueNode_BLineCalcVertex::Handle::cast_dynamic(value_desc.get_value_node()))
 275                         return false;
 276                 if (value_desc.parent_is_linkable_value_node())
 277                 {
 278                         LinkableValueNode::Handle parent_value_node(value_desc.get_parent_value_node());
 279                         if (ValueNode_Composite::Handle::cast_dynamic(parent_value_node))
 280                         {
 281                                 if (parent_value_node->get_type() == ValueBase::TYPE_BLINEPOINT &&
 282                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(
 283                                                 parent_value_node->get_link("point")))
 284                                         return false;
 285                         }
 286                         else if (ValueNode_BLine::Handle::cast_dynamic(parent_value_node))
 287                         {
 288                                 ValueNode_Composite::Handle composite(ValueNode_Composite::Handle::cast_dynamic(
 289                                                                                                                   value_desc.get_value_node()));
 290                                 if (composite &&
 291                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))
 292                                         return false;
 293                         }
 294                 }
 295         }
 296         return true;
 297 }
 298
 299 void
 300 Duckmatic::select_all_ducks()
 301 {
 302         DuckMap::const_iterator iter;
 303         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 304                 if(is_duck_group_selectable(iter->second))
 305                         select_duck(iter->second);
 306                 else
 307                         unselect_duck(iter->second);
 308 }
 309
 310 void
 311 Duckmatic::unselect_all_ducks()
 312 {
 313         DuckMap::const_iterator iter;
 314         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 315                 unselect_duck(iter->second);
 316 }
 317
 318 void
 319 Duckmatic::toggle_select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 320 {
 321         Vector vmin, vmax;
 322         vmin[0]=std::min(tl[0],br[0]);
 323         vmin[1]=std::min(tl[1],br[1]);
 324         vmax[0]=std::max(tl[0],br[0]);
 325         vmax[1]=std::max(tl[1],br[1]);
 326
 327         DuckMap::const_iterator iter;
 328         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 329         {
 330                 Point p(iter->second->get_trans_point());
 331                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1] &&
 332                    is_duck_group_selectable(iter->second))
 333                         toggle_select_duck(iter->second);
 334         }
 335 }
 336
 337 void
 338 Duckmatic::select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 339 {
 340         Vector vmin, vmax;
 341         vmin[0]=std::min(tl[0],br[0]);
 342         vmin[1]=std::min(tl[1],br[1]);
 343         vmax[0]=std::max(tl[0],br[0]);
 344         vmax[1]=std::max(tl[1],br[1]);
 345
 346 //      Type type(get_type_mask());
 347
 348         DuckMap::const_iterator iter;
 349         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 350         {
 351                 Point p(iter->second->get_trans_point());
 352                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1])
 353                 {
 354                         if(is_duck_group_selectable(iter->second))
 355                                 select_duck(iter->second);
 356                 }
 357         }
 358 }
 359
 360 int
 361 Duckmatic::count_selected_ducks()const
 362 {
 363         return selected_ducks.size();
 364 }
 365
 366 void
 367 Duckmatic::select_duck(const etl::handle<Duck> &duck)
 368 {
 369         if(duck)
 370         {
 371                 selected_ducks.insert(duck->get_guid());
 372                 signal_duck_selection_changed_();
 373         }
 374 }
 375
 376 DuckList
 377 Duckmatic::get_selected_ducks()const
 378 {
 379         DuckList ret;
 380         GUIDSet::const_iterator iter;
 381         const Type type(get_type_mask());
 382
 383         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 384         {
 385                 const DuckMap::const_iterator d_iter(duck_map.find(*iter));
 386
 387                 if(d_iter==duck_map.end())
 388                         continue;
 389
 390                 if(( d_iter->second->get_type() && (!(type & d_iter->second->get_type())) ) )
 391                         continue;
 392
 393                 ret.push_back(d_iter->second);
 394         }
 395         return ret;
 396 }
 397
 398 DuckList
 399 Duckmatic::get_duck_list()const
 400 {
 401         DuckList ret;
 402         DuckMap::const_iterator iter;
 403         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_POSITION) ret.push_back(iter->second);
 404         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_VERTEX  ) ret.push_back(iter->second);
 405         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_TANGENT ) ret.push_back(iter->second);
 406         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 407                 if (!(iter->second->get_type()&Duck::TYPE_POSITION) &&
 408                         !(iter->second->get_type()&Duck::TYPE_VERTEX) &&
 409                         !(iter->second->get_type()&Duck::TYPE_TANGENT))
 410                         ret.push_back(iter->second);
 411         return ret;
 412 }
 413
 414 void
 415 Duckmatic::unselect_duck(const etl::handle<Duck> &duck)
 416 {
 417         if(duck && selected_ducks.count(duck->get_guid()))
 418         {
 419                 selected_ducks.erase(duck->get_guid());
 420                 signal_duck_selection_changed_();
 421         }
 422 }
 423
 424 void
 425 Duckmatic::toggle_select_duck(const etl::handle<Duck> &duck)
 426 {
 427         if(duck_is_selected(duck))
 428                 unselect_duck(duck);
 429         else
 430                 select_duck(duck);
 431 }
 432
 433 void
 434 Duckmatic::translate_selected_ducks(const synfig::Vector& vector)
 435 {
 436         if(duck_dragger_)
 437                 duck_dragger_->duck_drag(this,vector);
 438 }
 439
 440 void
 441 Duckmatic::start_duck_drag(const synfig::Vector& offset)
 442 {
 443         if(duck_dragger_)
 444                 duck_dragger_->begin_duck_drag(this,offset);
 445
 446         //drag_offset_=offset;
 447         drag_offset_=find_duck(offset)->get_trans_point();
 448 }
 449
 450 bool
 451 Duckmatic::end_duck_drag()
 452 {
 453         if(duck_dragger_)
 454                 return duck_dragger_->end_duck_drag(this);
 455         return false;
 456 }
 457
 458 Point
 459 Duckmatic::snap_point_to_grid(const synfig::Point& x, float radius)const
 460 {
 461         Point ret(x);
 462
 463         GuideList::const_iterator guide_x,guide_y;
 464         bool has_guide_x(false), has_guide_y(false);
 465
 466         guide_x=find_guide_x(ret,radius);
 467         if(guide_x!=guide_list_x_.end())
 468                 has_guide_x=true;
 469
 470         guide_y=find_guide_y(ret,radius);
 471         if(guide_y!=guide_list_y_.end())
 472                 has_guide_y=true;
 473
 474         if(get_grid_snap())
 475         {
 476                 Point snap(
 477                         floor(ret[0]/get_grid_size()[0]+0.5)*get_grid_size()[0],
 478                         floor(ret[1]/get_grid_size()[1]+0.5)*get_grid_size()[1]);
 479
 480                 if(abs(snap[0]-ret[0])<=radius && (!has_guide_x || abs(snap[0]-ret[0])<=abs(*guide_x-ret[0])))
 481                         ret[0]=snap[0],has_guide_x=false;
 482                 if(abs(snap[1]-ret[1])<=radius && (!has_guide_y || abs(snap[1]-ret[1])<=abs(*guide_y-ret[1])))
 483                         ret[1]=snap[1],has_guide_y=false;
 484         }
 485
 486         if(guide_snap)
 487         {
 488                 if(has_guide_x)
 489                         ret[0]=*guide_x;
 490                 if(has_guide_y)
 491                         ret[1]=*guide_y;
 492         }
 493
 494         if(axis_lock)
 495         {
 496                 ret-=drag_offset_;
 497                 if(abs(ret[0])<abs(ret[1]))
 498                         ret[0]=0;
 499                 else
 500                         ret[1]=0;
 501                 ret+=drag_offset_;
 502         }
 503
 504         return ret;
 505 }
 506
 507 void
 508 DuckDrag_Translate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 509 {
 510         last_translate_=Vector(0,0);
 511         {
 512                 drag_offset_=duckmatic->find_duck(offset)->get_trans_point();
 513
 514                 snap=Vector(0,0);
 515         }
 516
 517         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 518         DuckList::const_iterator iter;
 519
 520         positions.clear();
 521         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 522         {
 523                 Point p((*iter)->get_trans_point());
 524                 positions.push_back(p);
 525         }
 526 }
 527
 528 bool
 529 DuckDrag_Translate::end_duck_drag(Duckmatic* duckmatic)
 530 {
 531         if(last_translate_.mag()>0.0001)
 532         {
 533                 duckmatic->signal_edited_selected_ducks();
 534                 return true;
 535         }
 536         else
 537         {
 538                 duckmatic->signal_user_click_selected_ducks(0);
 539                 return false;
 540         }
 541 }
 542
 543 void
 544 DuckDrag_Translate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 545 {
 546         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 547         DuckList::const_iterator iter;
 548
 549         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-drag_offset_);
 550         int i;
 551         Time time(duckmatic->get_time());
 552
 553         // drag the vertex and position ducks first
 554         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 555                 if((*iter)->get_type() == Duck::TYPE_VERTEX || (*iter)->get_type() == Duck::TYPE_POSITION)
 556                         (*iter)->set_trans_point(positions[i]+vect, time);
 557
 558         // then drag the others
 559         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 560                 if ((*iter)->get_type() != Duck::TYPE_VERTEX && (*iter)->get_type() != Duck::TYPE_POSITION)
 561                         (*iter)->set_trans_point(positions[i]+vect, time);
 562
 563         // then patch up the tangents for the vertices we've moved
 564         DuckList duck_list(duckmatic->get_duck_list());
 565         for (iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter)
 566         {
 567                 etl::handle<Duck> duck(*iter);
 568                 if (duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 569                 {
 570                         ValueNode_Composite::Handle composite;
 571
 572                         if ((ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) ||
 573                                 ((composite = ValueNode_Composite::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) &&
 574                                  composite->get_type() == ValueBase::TYPE_BLINEPOINT &&
 575                                  (ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))))
 576                         {
 577                                 //! \todo update() will call dynamic cast again, see if we can avoid that
 578                                 DuckList::iterator iter;
 579                                 for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 580                                         if ((*iter)->get_origin_duck()==duck
 581                                                 && std::find(selected_ducks.begin(),
 582                                                                          selected_ducks.end(), *iter) == selected_ducks.end() )
 583                                                 (*iter)->update(time);
 584                         }
 585                 }
 586         }
 587
 588         last_translate_=vect;
 589 }
 590
 591 void
 592 Duckmatic::signal_edited_selected_ducks()
 593 {
 594         const DuckList ducks(get_selected_ducks());
 595         DuckList::const_iterator iter;
 596
 597         synfig::GUIDSet old_set(selected_ducks);
 598
 599         // If we have more than 20 things to move, then display
 600         // something to explain that it may take a moment
 601         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 602
 603         // Go ahead and call everyone's signals
 604         for(iter=ducks.begin();iter!=ducks.end();++iter)
 605         {
 606                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 607                 {
 608                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 609                         {
 610                                 selected_ducks=old_set;
 611                                 throw String("Bad edit");
 612                         }
 613                 }
 614                 else if (App::restrict_radius_ducks &&
 615                                  (*iter)->is_radius())
 616                 {
 617                         Point point((*iter)->get_point());
 618                         bool changed = false;
 619
 620                         if (point[0] < 0)
 621                         {
 622                                 point[0] = 0;
 623                                 changed = true;
 624                         }
 625                         if (point[1] < 0)
 626                         {
 627                                 point[1] = 0;
 628                                 changed = true;
 629                         }
 630
 631                         if (changed) (*iter)->set_point(point);
 632
 633                         if(!(*iter)->signal_edited()(point))
 634                         {
 635                                 selected_ducks=old_set;
 636                                 throw String("Bad edit");
 637                         }
 638                 }
 639                 else
 640                 {
 641                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 642                         {
 643                                 selected_ducks=old_set;
 644                                 throw String("Bad edit");
 645                         }
 646                 }
 647         }
 648         selected_ducks=old_set;
 649 }
 650
 651 void
 652 Duckmatic::signal_user_click_selected_ducks(int button)
 653 {
 654         const DuckList ducks(get_selected_ducks());
 655         DuckList::const_iterator iter;
 656
 657         for(iter=ducks.begin();iter!=ducks.end();++iter)
 658         {
 659                 (*iter)->signal_user_click(button)();
 660         }
 661 }
 662
 663 void
 664 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 665 {
 666         //if(!duck_map.count(duck->get_guid()))
 667         {
 668                 if(duck_data_share_map.count(duck->get_data_guid()))
 669                 {
 670                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 671                 }
 672                 else
 673                 {
 674                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 675                         duck->set_shared_point(point);
 676                         duck_data_share_map[duck->get_data_guid()]=point;
 677                 }
 678
 679                 duck_map.insert(duck);
 680         }
 681
 682         last_duck_guid=duck->get_guid();
 683 }
 684
 685 void
 686 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 687 {
 688         bezier_list_.push_back(bezier);
 689 }
 690
 691 void
 692 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 693 {
 694         assert(stroke_point_list);
 695
 696         std::list<etl::handle<Stroke> >::iterator iter;
 697
 698         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 699         {
 700                 if((*iter)->stroke_data==stroke_point_list)
 701                         return;
 702         }
 703
 704         etl::handle<Stroke> stroke(new Stroke());
 705
 706         stroke->stroke_data=stroke_point_list;
 707         stroke->color=color;
 708
 709         stroke_list_.push_back(stroke);
 710 }
 711
 712 void
 713 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 714 {
 715         add_stroke(stroke_point_list,color);
 716         persistent_stroke_list_.push_back(stroke_list_.back());
 717 }
 718
 719 void
 720 Duckmatic::clear_persistent_strokes()
 721 {
 722         persistent_stroke_list_.clear();
 723 }
 724
 725 void
 726 Duckmatic::set_show_persistent_strokes(bool x)
 727 {
 728         if(x!=show_persistent_strokes)
 729         {
 730                 show_persistent_strokes=x;
 731                 if(x)
 732                         stroke_list_=persistent_stroke_list_;
 733                 else
 734                         stroke_list_.clear();
 735         }
 736 }
 737
 738 void
 739 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 740 {
 741         duck_map.erase(duck->get_guid());
 742 }
 743
 744 etl::handle<Duckmatic::Duck>
 745 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 746 {
 747         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 748         if(iter!=duck_map.end())
 749                 return iter->second;
 750         return 0;
 751
 752 /*      std::list<handle<Duck> >::reverse_iterator iter;
 753
 754         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 755         {
 756                 if(*iter!=duck && **iter==*duck)
 757                 {
 758                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 759                         return *iter;
 760                 }
 761         }
 762         return 0;
 763 */
 764 }
 765
 766 etl::handle<Duckmatic::Duck>
 767 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 768 {
 769         etl::handle<Duck> similar(find_similar_duck(duck));
 770         if(!similar)
 771         {
 772                 add_duck(duck);
 773                 return duck;
 774         }
 775         return similar;
 776 }
 777
 778 void
 779 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 780 {
 781         std::list<handle<Bezier> >::iterator iter;
 782
 783         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 784         {
 785                 if(*iter==bezier)
 786                 {
 787                         bezier_list_.erase(iter);
 788                         return;
 789                 }
 790         }
 791         synfig::warning("Unable to find bezier to erase!");
 792 }
 793
 794 etl::handle<Duckmatic::Duck>
 795 Duckmatic::last_duck()const
 796 {
 797         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 798         if(iter!=duck_map.end())
 799                 return iter->second;
 800         return 0;
 801 }
 802
 803 etl::handle<Duckmatic::Bezier>
 804 Duckmatic::last_bezier()const
 805 {
 806         return bezier_list_.back();
 807 }
 808
 809 etl::handle<Duckmatic::Duck>
 810 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 811 {
 812         if(radius==0)radius=10000000;
 813
 814         if(type==Duck::TYPE_DEFAULT)
 815                 type=get_type_mask();
 816
 817         Real closest(10000000);
 818         etl::handle<Duck> ret;
 819
 820         DuckMap::const_iterator iter;
 821
 822         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 823         {
 824                 const Duck::Handle& duck(iter->second);
 825
 826                 if(duck->get_ignore() ||
 827                    (duck->get_type() && !(type & duck->get_type())))
 828                         continue;
 829
 830                 Real dist((duck->get_trans_point()-point).mag_squared());
 831
 832                 if(duck->get_type()&Duck::TYPE_VERTEX)
 833                         dist*=1.0001;
 834                 else if(duck->get_type()&Duck::TYPE_TANGENT && duck->get_scalar()>0)
 835                         dist*=1.00005;
 836                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 837                         dist*=0.9999;
 838
 839                 if(dist<=closest)
 840                 {
 841                         closest=dist;
 842                         ret=duck;
 843                 }
 844         }
 845
 846         if(radius==0 || closest<radius*radius)
 847                 return ret;
 848
 849         return 0;
 850 }
 851
 852 etl::handle<Duckmatic::Bezier>
 853 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 854 {
 855         return find_bezier(point,radius,radius,location);
 856 }
 857
 858 etl::handle<Duckmatic::Bezier>
 859 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 860 {
 861         if(radius==0)radius=10000000;
 862         Real closest(10000000);
 863         etl::handle<Bezier> ret;
 864
 865         bezier<Point>   curve;
 866
 867         Real    d,step;
 868         float   time = 0;
 869         float   best_time = 0;
 870
 871         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 872         {
 873                 curve[0] = (*iter)->p1->get_trans_point();
 874                 curve[1] = (*iter)->c1->get_trans_point();
 875                 curve[2] = (*iter)->c2->get_trans_point();
 876                 curve[3] = (*iter)->p2->get_trans_point();
 877                 curve.sync();
 878
 879 #if 0
 880                 // I don't know why this doesn't work
 881                 time=curve.find_closest(pos,6);
 882                 d=((curve(time)-pos).mag_squared());
 883
 884 #else
 885                 //set the step size based on the size of the picture
 886                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 887
 888                 step = d/(2*scale); //want to make the distance between lines happy
 889
 890                 step = max(step,0.01); //100 samples should be plenty
 891                 step = min(step,0.1); //10 is minimum
 892
 893                 d = find_closest(curve,pos,step,&closest,&time);
 894 #endif
 895
 896                 if(d < closest)
 897                 {
 898                         closest = d;
 899                         ret = *iter;
 900                         best_time=time;
 901                 }
 902         }
 903
 904         if(closest < radius*radius)
 905         {
 906                 if(location)
 907                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 908
 909                 return ret;
 910         }
 911
 912         return 0;
 913 }
 914
 915 bool
 916 Duckmatic::save_sketch(const synfig::String& filename)const
 917 {
 918         ChangeLocale change_locale(LC_NUMERIC, "C");
 919         std::ofstream file(filename.c_str());
 920
 921         if(!file)return false;
 922
 923         file<<"SKETCH"<<endl;
 924
 925         std::list<etl::handle<Stroke> >::const_iterator iter;
 926
 927         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 928         {
 929                 file<<"C "
 930                         <<(*iter)->color.get_r()<<' '
 931                         <<(*iter)->color.get_g()<<' '
 932                         <<(*iter)->color.get_b()
 933                 <<endl;
 934                 std::list<synfig::Point>::const_iterator viter;
 935                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 936                 {
 937                         file<<"V "
 938                                 <<(*viter)[0]<<' '
 939                                 <<(*viter)[1]
 940                         <<endl;
 941                 }
 942         }
 943         if(!file)return false;
 944         sketch_filename_=filename;
 945         signal_sketch_saved_();
 946         return true;
 947 }
 948
 949 bool
 950 Duckmatic::load_sketch(const synfig::String& filename)
 951 {
 952         ChangeLocale change_locale(LC_NUMERIC, "C");
 953         std::ifstream file(filename.c_str());
 954
 955         if(!file)
 956                 return false;
 957
 958         std::string line;
 959         getline(file,line);
 960
 961         if(line!="SKETCH")
 962         {
 963                 synfig::error("Not a sketch");
 964                 return false;
 965         }
 966
 967         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 968
 969         while(file)
 970         {
 971                 getline(file,line);
 972
 973                 if(line.empty())
 974                         continue;
 975
 976                 switch(line[0])
 977                 {
 978                 case 'C':
 979                 case 'c':
 980                         {
 981                                 stroke_data.spawn();
 982                                 float r,g,b;
 983                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
 984                                 {
 985                                         synfig::warning("Bad color line \"%s\"",line.c_str());
 986                                         r=0;g=0;b=0;
 987                                 }
 988                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
 989                         }
 990                         break;
 991                 case 'V':
 992                 case 'v':
 993                         if(!stroke_data)
 994                         {
 995                                 stroke_data.spawn();
 996                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
 997                         }
 998                         float x,y;
 999                         if(!strscanf(line,"V %f %f",&x, &y))
1000                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
1001                         else
1002                                 stroke_data->push_back(synfig::Vector(x,y));
1003                         break;
1004                 default:
1005                         synfig::warning("Unexpected sketch token '%c'",line[0]);
1006                         break;
1007                 }
1008         }
1009
1010         sketch_filename_=filename;
1011         return true;
1012 }
1013
1014 Duckmatic::Push::Push(Duckmatic *duckmatic_):
1015         duckmatic_(duckmatic_)
1016 {
1017         duck_map=duckmatic_->duck_map;
1018         bezier_list_=duckmatic_->bezier_list_;
1019         duck_data_share_map=duckmatic_->duck_data_share_map;
1020         stroke_list_=duckmatic_->stroke_list_;
1021         duck_dragger_=duckmatic_->duck_dragger_;
1022         needs_restore=true;
1023 }
1024
1025 Duckmatic::Push::~Push()
1026 {
1027         if(needs_restore)
1028                 restore();
1029 }
1030
1031 void
1032 Duckmatic::Push::restore()
1033 {
1034         duckmatic_->duck_map=duck_map;
1035         duckmatic_->bezier_list_=bezier_list_;
1036         duckmatic_->duck_data_share_map=duck_data_share_map;
1037         duckmatic_->stroke_list_=stroke_list_;
1038         duckmatic_->duck_dragger_=duck_dragger_;
1039         needs_restore=false;
1040 }
1041
1042 inline String guid_string(const synfigapp::ValueDesc& x)
1043 {
1044         if(x.parent_is_layer_param())
1045                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1046         //if(x.is_value_node())
1047                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1048 }
1049
1050 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1051 {
1052         synfig::GUID ret(0);
1053
1054         if(x.parent_is_layer_param())
1055         {
1056                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1057         }
1058         else
1059         {
1060                 ret=x.get_value_node()->get_guid();
1061         }
1062
1063         ret^=transform_stack.get_guid();
1064         return ret;
1065 }
1066
1067 /*
1068 Duck::Handle
1069 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)
1070 {
1071         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1072         etl::handle<Duck> duck=new Duck();
1073
1074         return duck;
1075 }
1076 */
1077
1078 bool
1079 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)
1080 {
1081         ValueBase::Type type=value_desc.get_value_type();
1082 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1083         switch(type)
1084         {
1085         case ValueBase::TYPE_REAL:
1086
1087                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1088                 {
1089                         etl::handle<Duck> duck=new Duck();
1090                         duck->set_transform_stack(transform_stack);
1091                         duck->set_radius(true);
1092                         duck->set_type(Duck::TYPE_RADIUS);
1093
1094                         // put the duck on the right hand side of the center
1095                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1096                         duck->set_name(guid_string(value_desc));
1097                         if(value_desc.is_value_node())
1098                         {
1099                                 // If the ValueNode can be directly manipulated,
1100                                 // then set it as so.
1101                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1102                         }
1103                         else
1104                         {
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_REAL:
1123                         duck->signal_edited().connect(
1124                                 sigc::bind(
1125                                         sigc::mem_fun(
1126                                                 *canvas_view,
1127                                                 &studio::CanvasView::on_duck_changed),
1128                                         value_desc));
1129                         duck->set_value_desc(value_desc);
1130
1131                         duck->signal_user_click(2).connect(
1132                                 sigc::bind(
1133                                         sigc::bind(
1134                                                 sigc::bind(
1135                                                         sigc::mem_fun(
1136                                                                 *canvas_view,
1137                                                                 &studio::CanvasView::popup_param_menu),
1138                                                         false),
1139                                                 0.0f),
1140                                         value_desc));
1141
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_ANGLE:
1151
1152                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1153                 {
1154                         etl::handle<Duck> duck=new Duck();
1155                         duck->set_type(Duck::TYPE_ANGLE);
1156                         duck->set_transform_stack(transform_stack);
1157                         synfig::Angle angle;
1158
1159                         angle=value_desc.get_value(get_time()).get(Angle());
1160                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1161                         duck->set_name(guid_string(value_desc));
1162                         if(value_desc.is_value_node())
1163                         {
1164                                 ValueNode::Handle value_node=value_desc.get_value_node();
1165                                 //duck->set_name(strprintf("%x",value_node.get()));
1166
1167                                 // If the ValueNode can be directly manipulated,
1168                                 // then set it as so.
1169                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1170                         }
1171                         else
1172                         {
1173                                 //angle=(value_desc.get_value().get(Angle()));
1174                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1175                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1176                                 duck->set_editable(true);
1177                         }
1178
1179                         if(param_desc && param_desc!=REAL_COOKIE)
1180                         {
1181                                 if(!param_desc->get_origin().empty())
1182                                 {
1183                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1184                                         /*
1185                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1186                                         */
1187                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1188                                         duck->set_origin(last_duck());
1189                                 }
1190                                 duck->set_scalar(param_desc->get_scalar());
1191                         }
1192
1193                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1194                         duck->signal_edited_angle().clear();
1195                         duck->signal_edited_angle().connect(
1196                                 sigc::bind(
1197                                         sigc::mem_fun(
1198                                                 *canvas_view,
1199                                                 &studio::CanvasView::on_duck_angle_changed),
1200                                         value_desc));
1201                         duck->set_value_desc(value_desc);
1202
1203                         duck->signal_user_click(2).connect(
1204                                 sigc::bind(
1205                                         sigc::bind(
1206                                                 sigc::bind(
1207                                                         sigc::mem_fun(
1208                                                                 *canvas_view,
1209                                                                 &studio::CanvasView::popup_param_menu),
1210                                                         false),
1211                                                 0.0f),
1212                                         value_desc));
1213                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1214
1215                         add_duck(duck);
1216
1217                         return true;
1218                 }
1219                 break;
1220
1221         case ValueBase::TYPE_VECTOR:
1222                 {
1223                         etl::handle<Duck> duck=new Duck();
1224                         duck->set_transform_stack(transform_stack);
1225
1226                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1227                         duck->set_name(guid_string(value_desc));
1228                         if(value_desc.is_value_node())
1229                         {
1230                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1231
1232                                 // If the ValueNode can be directly manipulated,
1233                                 // then set it as so.
1234                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1235                         }
1236                         else
1237                         {
1238                                 //duck->set_point(value_desc.get_value().get(Point()));
1239                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1240                                 duck->set_editable(true);
1241                         }
1242
1243                         // If we were passed a parameter description
1244                         if(param_desc)
1245                         {
1246                                 if(!param_desc->get_connect().empty())
1247                                 {
1248                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1249                                         Duck::Handle connect_duck;
1250                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1251                                         {
1252                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1253                                         }
1254                                         else
1255                                         {
1256                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1257                                                 connect_duck=last_duck();
1258                                         }
1259                                         duck->set_connect_duck(connect_duck);
1260                                 }
1261                                 if(!param_desc->get_box().empty())
1262                                 {
1263                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1264                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1265                                         duck->set_box_duck(last_duck());
1266                                 }
1267
1268                                 // If we have an origin
1269                                 if(!param_desc->get_origin().empty())
1270                                 {
1271                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1272                                         /*
1273                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1274                                         */
1275                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1276                                         duck->set_origin(last_duck());
1277                                         duck->set_type(Duck::TYPE_VERTEX);
1278                                 }
1279                                 else
1280                                         duck->set_type(Duck::TYPE_POSITION);
1281
1282                                 duck->set_scalar(param_desc->get_scalar());
1283                         }
1284                         else
1285                                 duck->set_type(Duck::TYPE_POSITION);
1286
1287                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1288                         duck->signal_edited().connect(
1289                                 sigc::bind(
1290                                         sigc::mem_fun(
1291                                                 *canvas_view,
1292                                                 &studio::CanvasView::on_duck_changed),
1293                                         value_desc));
1294                         duck->set_value_desc(value_desc);
1295
1296                         duck->signal_user_click(2).connect(
1297                                 sigc::bind(
1298                                         sigc::bind(
1299                                                 sigc::bind(
1300                                                         sigc::mem_fun(
1301                                                                 *canvas_view,
1302                                                                 &studio::CanvasView::popup_param_menu),
1303                                                         false),
1304                                                 1.0f),
1305                                         value_desc));
1306                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1307                         add_duck(duck);
1308
1309                         return true;
1310                 }
1311                 break;
1312         case ValueBase::TYPE_SEGMENT:
1313                 {
1314                         etl::handle<Bezier> bezier(new Bezier());
1315                         ValueNode_Composite::Handle value_node;
1316
1317                         if(value_desc.is_value_node() &&
1318                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1319                         {
1320                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1321                                         return false;
1322                                 bezier->p1=last_duck();
1323                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1324                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1325                                         return false;
1326                                 bezier->c1=last_duck();
1327                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1328                                 bezier->c1->set_origin(bezier->p1);
1329                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1330                                 bezier->c1->set_tangent(true);
1331
1332                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1333                                         return false;
1334                                 bezier->p2=last_duck();
1335                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1336                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1337                                         return false;
1338                                 bezier->c2=last_duck();
1339                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1340                                 bezier->c2->set_origin(bezier->p2);
1341                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1342                                 bezier->c2->set_tangent(true);
1343
1344                                 bezier->signal_user_click(2).connect(
1345                                         sigc::bind(
1346                                                 sigc::mem_fun(
1347                                                         *canvas_view,
1348                                                         &studio::CanvasView::popup_param_menu_bezier),
1349                                                 value_desc));
1350
1351                                 add_bezier(bezier);
1352                         }
1353                         else if(value_desc.get_value().is_valid())
1354                         {
1355                                 Segment segment=value_desc.get_value();
1356                                 etl::handle<Duck> duck_p,duck_c;
1357                                 synfig::String name;
1358                                 if(param_desc)
1359                                 {
1360                                         name=param_desc->get_local_name();
1361                                 }
1362                                 else
1363                                 {
1364                                         name=guid_string(value_desc);
1365                                 }
1366
1367                                 duck_p=new Duck(segment.p1);
1368                                 duck_p->set_name(name+".P1");
1369                                 duck_p->set_type(Duck::TYPE_VERTEX);
1370                                 add_duck(duck_p);
1371
1372                                 duck_c=new Duck(segment.t1);
1373                                 duck_c->set_name(name+".T1");
1374                                 duck_c->set_type(Duck::TYPE_TANGENT);
1375                                 add_duck(duck_c);
1376                                 duck_c->set_origin(duck_p);
1377                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1378                                 duck_c->set_tangent(true);
1379
1380                                 bezier->p1=duck_p;
1381                                 bezier->c1=duck_c;
1382
1383                                 duck_p=new Duck(segment.p2);
1384                                 duck_p->set_name(name+".P2");
1385                                 duck_p->set_type(Duck::TYPE_VERTEX);
1386                                 add_duck(duck_p);
1387
1388                                 duck_c=new Duck(segment.t2);
1389                                 duck_c->set_type(Duck::TYPE_TANGENT);
1390                                 duck_c->set_name(name+".T2");
1391                                 add_duck(duck_c);
1392                                 duck_c->set_origin(duck_p);
1393                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1394                                 duck_c->set_tangent(true);
1395
1396                                 bezier->p2=duck_p;
1397                                 bezier->c2=duck_c;
1398                                 add_bezier(bezier);
1399                         }
1400
1401                         return true;
1402                 }
1403                 break;
1404         case ValueBase::TYPE_BLINEPOINT:
1405         {
1406
1407                 if(value_desc.is_value_node() &&
1408                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1409                 {
1410                         ValueNode_Composite::Handle value_node;
1411                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1412
1413                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1414                                 return false;
1415                         etl::handle<Duck> vertex_duck(last_duck());
1416                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1417                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1418                                 return false;
1419                         etl::handle<Duck> t1_duck(last_duck());
1420
1421                         t1_duck->set_origin(vertex_duck);
1422                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1423                         t1_duck->set_tangent(true);
1424
1425                         etl::handle<Duck> t2_duck;
1426
1427                         // If the tangents are split
1428                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1429                         {
1430                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1431                                         return false;
1432                                 t2_duck=last_duck();
1433                                 t2_duck->set_origin(vertex_duck);
1434                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1435                                 t2_duck->set_tangent(true);
1436                         }
1437                         else
1438                         {
1439                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1440                                         return false;
1441                                 t2_duck=last_duck();
1442                                 t2_duck->set_origin(vertex_duck);
1443                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1444                                 t2_duck->set_tangent(true);
1445                         }
1446                         return true;
1447                 }
1448
1449         }
1450         break;
1451         case ValueBase::TYPE_LIST:
1452         {
1453                 // Check for BLine
1454                 if (value_desc.is_value_node() &&
1455                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1456                 {
1457                         ValueNode_BLine::Handle value_node;
1458                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1459
1460                         int i,first=-1;
1461
1462                         etl::handle<Bezier> bezier;
1463                         etl::handle<Duck> first_duck;
1464                         etl::handle<Duck> duck, tduck;
1465
1466                         for (i = 0; i < value_node->link_count(); i++)
1467                         {
1468                                 float amount(value_node->list[i].amount_at_time(get_time()));
1469
1470                                 // skip vertices that aren't fully on
1471                                 if (amount < 0.9999f)
1472                                         continue;
1473
1474                                 // remember the index of the first vertex we didn't skip
1475                                 if (first == -1)
1476                                         first = i;
1477
1478                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1479
1480                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1481                                 ValueNode_Composite::Handle composite_vertex_value_node(
1482                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1483
1484                                 // add the vertex duck - it's a composite
1485                                 if(composite_vertex_value_node)
1486                                 {
1487                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1488                                         {
1489                                                 duck=last_duck();
1490                                                 if(i==first)
1491                                                         first_duck=duck;
1492                                                 duck->set_type(Duck::TYPE_VERTEX);
1493
1494                                                 duck->signal_user_click(2).clear();
1495                                                 duck->signal_user_click(2).connect(
1496                                                         sigc::bind(
1497                                                                 sigc::bind(
1498                                                                         sigc::bind(
1499                                                                                 sigc::mem_fun(
1500                                                                                         *canvas_view,
1501                                                                                         &studio::CanvasView::popup_param_menu),
1502                                                                                 false),
1503                                                                         1.0f),
1504                                                                 synfigapp::ValueDesc(value_node,i)));
1505                                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1506
1507                                                 if(param_desc)
1508                                                 {
1509                                                         if(!param_desc->get_origin().empty())
1510                                                         {
1511                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1512                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1513                                                                 duck->set_origin(last_duck());
1514 /*
1515                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1516                                                                 if(value.same_type_as(synfig::Point()))
1517                                                                         duck->set_origin(value.get(synfig::Point()));
1518 */
1519                                                         }
1520                                                 }
1521                                         }
1522                                         else
1523                                                 return false;
1524                                 }
1525                                 // else it's not a composite
1526                                 else
1527                                 {
1528                                         duck=new Duck(bline_point.get_vertex());
1529                                         if(i==first)
1530                                                 first_duck=duck;
1531                                         duck->set_transform_stack(transform_stack);
1532                                         duck->set_editable(false);
1533                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1534                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1535
1536                                         duck->set_type(Duck::TYPE_VERTEX);
1537                                         if(param_desc)
1538                                         {
1539                                                 if(!param_desc->get_origin().empty())
1540                                                 {
1541                                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1542                                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1543                                                         duck->set_origin(last_duck());
1544 /*
1545                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1546                                                         if(value.same_type_as(synfig::Point()))
1547                                                                 duck->set_origin(value.get(synfig::Point()));
1548 */
1549                                                 }
1550                                         }
1551                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1552                                         duck=add_similar_duck(duck);
1553 //                                      add_duck(duck);
1554                                 }
1555
1556                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1557                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1558                                         !param_desc)
1559                                 {
1560                                         etl::handle<Duck> width;
1561                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1562                                         {
1563                                                 width=last_duck();
1564                                                 width->set_origin(duck);
1565                                                 width->set_type(Duck::TYPE_WIDTH);
1566                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1567
1568                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1569                                                 if (param_desc)
1570                                                 {
1571                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1572                                                         if(value.same_type_as(synfig::Real()))
1573                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1574                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1575                                                         else
1576                                                                 width->set_scalar(0.5f);
1577                                                 }
1578                                                 // otherwise just present the raw unscaled width
1579                                                 else
1580                                                         width->set_scalar(0.5f);
1581                                         }
1582                                         else
1583                                                 synfig::error("Unable to add width duck!");
1584                                 }
1585
1586                                 // each bezier uses t2 of one point and t1 of the next
1587                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1588                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1589                                 if(bezier)
1590                                 {
1591                                         // Add the tangent1 duck
1592                                         if(composite_vertex_value_node)
1593                                         {
1594                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1595                                                         return false;
1596                                                 tduck=last_duck();
1597                                         }
1598                                         else
1599                                         {
1600                                                 tduck=new Duck(bline_point.get_tangent1());
1601                                                 tduck->set_transform_stack(transform_stack);
1602                                                 tduck->set_editable(false);
1603                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1604 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1605                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1606                                                 tduck=add_similar_duck(tduck);
1607 //                                              add_duck(duck);
1608                                         }
1609
1610                                         tduck->set_origin(duck);
1611                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1612                                         tduck->set_tangent(true);
1613
1614                                         bezier->p2=duck;
1615                                         bezier->c2=tduck;
1616
1617                                         bezier->signal_user_click(2).connect(
1618                                                 sigc::bind(
1619                                                         sigc::mem_fun(
1620                                                                 *canvas_view,
1621                                                                 &studio::CanvasView::popup_param_menu_bezier),
1622                                                         synfigapp::ValueDesc(value_node,i)));
1623
1624                                         duck->signal_user_click(2).clear();
1625                                         duck->signal_user_click(2).connect(
1626                                                 sigc::bind(
1627                                                         sigc::bind(
1628                                                                 sigc::bind(
1629                                                                         sigc::mem_fun(
1630                                                                                 *canvas_view,
1631                                                                                 &studio::CanvasView::popup_param_menu),
1632                                                                         false),
1633                                                                 1.0f),
1634                                                         synfigapp::ValueDesc(value_node,i)));
1635                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1636
1637                                         add_bezier(bezier);
1638                                         bezier=0;
1639                                 }
1640
1641                                 // don't start a new bezier for the last point in the line if we're not looped
1642                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1643                                         continue;
1644
1645                                 bezier=new Bezier();
1646
1647                                 // Add the tangent2 duck
1648                                 if(composite_vertex_value_node)
1649                                 {
1650                                         int i=bline_point.get_split_tangent_flag()?5:4;
1651                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1652                                                 return false;
1653                                         tduck=last_duck();
1654                                 }
1655                                 else
1656                                 {
1657                                         if(bline_point.get_split_tangent_flag())
1658                                                 tduck=new Duck(bline_point.get_tangent2());
1659                                         else
1660                                                 tduck=new Duck(bline_point.get_tangent1());
1661
1662                                         tduck->set_transform_stack(transform_stack);
1663                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1664                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1665                                         tduck->set_editable(false);
1666                                         tduck=add_similar_duck(tduck);
1667 //                                      add_duck(duck);
1668                                         if(param_desc)
1669                                         {
1670                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1671                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1672                                                 duck->set_origin(last_duck());
1673 /*
1674                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1675                                                 if(value.same_type_as(synfig::Point()))
1676                                                         duck->set_origin(value.get(synfig::Point()));
1677 */
1678 //                                              if(!param_desc->get_origin().empty())
1679 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1680                                         }
1681                                         duck->signal_user_click(2).clear();
1682                                         duck->signal_user_click(2).connect(
1683                                                 sigc::bind(
1684                                                         sigc::bind(
1685                                                                 sigc::bind(
1686                                                                         sigc::mem_fun(
1687                                                                                 *canvas_view,
1688                                                                                 &studio::CanvasView::popup_param_menu),
1689                                                                         false),
1690                                                                 1.0f),
1691                                                         synfigapp::ValueDesc(value_node,i)));
1692                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1693
1694                                 }
1695
1696                                 tduck->set_origin(duck);
1697                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1698                                 tduck->set_tangent(true);
1699
1700                                 bezier->p1=duck;
1701                                 bezier->c1=tduck;
1702                         }
1703
1704                         // Loop if necessary
1705                         if(bezier && value_node->get_loop())
1706                         {
1707                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1708
1709                                 ValueNode_Composite::Handle composite_vertex_value_node(
1710                                         ValueNode_Composite::Handle::cast_dynamic(
1711                                                 value_node->get_link(first)));
1712
1713                                 // Add the vertex duck
1714                                 duck=first_duck;
1715
1716                                 // Add the tangent1 duck
1717                                 if(composite_vertex_value_node)
1718                                 {
1719                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1720                                                 return false;
1721                                         tduck=last_duck();
1722                                 }
1723                                 else
1724                                 {
1725                                         tduck=new Duck(bline_point.get_tangent1());
1726                                         tduck->set_transform_stack(transform_stack);
1727                                         tduck->set_editable(false);
1728                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1729                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1730                                         tduck=add_similar_duck(tduck);
1731                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1732                                         //add_duck(duck);
1733                                 }
1734
1735                                 tduck->set_origin(duck);
1736                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1737                                 tduck->set_tangent(true);
1738
1739                                 bezier->p2=duck;
1740                                 bezier->c2=tduck;
1741
1742                                 bezier->signal_user_click(2).connect(
1743                                         sigc::bind(
1744                                                 sigc::mem_fun(
1745                                                         *canvas_view,
1746                                                         &studio::CanvasView::popup_param_menu_bezier),
1747                                                 synfigapp::ValueDesc(value_node,first)));
1748
1749                                 duck->signal_user_click(2).clear();
1750                                 duck->signal_user_click(2).connect(
1751                                         sigc::bind(
1752                                                 sigc::bind(
1753                                                         sigc::bind(
1754                                                                 sigc::mem_fun(
1755                                                                         *canvas_view,
1756                                                                         &studio::CanvasView::popup_param_menu),
1757                                                                 false),
1758                                                         1.0f),
1759                                                 synfigapp::ValueDesc(value_node,first)));
1760                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,first));
1761
1762                                 add_bezier(bezier);
1763                                 bezier=0;
1764                         }
1765                         return true;
1766                 }
1767                 else // Check for DynamicList
1768                 if(value_desc.is_value_node() &&
1769                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1770                 {
1771                         ValueNode_DynamicList::Handle value_node;
1772                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1773                         int i;
1774
1775                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1776                         {
1777                                 Bezier bezier;
1778                                 etl::handle<Duck> first_duck, duck;
1779                                 int first = -1;
1780                                 for(i=0;i<value_node->link_count();i++)
1781                                 {
1782                                         if(!value_node->list[i].status_at_time(get_time()))
1783                                                 continue;
1784                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1785                                                 return false;
1786                                         duck = last_duck();
1787
1788                                         // remember the index of the first vertex we didn't skip
1789                                         if (first == -1)
1790                                         {
1791                                                 first = i;
1792                                                 first_duck = duck;
1793                                         }
1794
1795                                         if(param_desc && !param_desc->get_origin().empty())
1796                                         {
1797                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1798                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1799                                                 duck->set_origin(last_duck());
1800 /*
1801                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1802                                                 if(value.same_type_as(synfig::Point()))
1803                                                         duck->set_origin(value.get(synfig::Point()));
1804 */
1805 //                                              if(!param_desc->get_origin().empty())
1806 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1807                                         }
1808                                         duck->set_type(Duck::TYPE_VERTEX);
1809                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1810                                         bezier.p2=bezier.c2=duck;
1811
1812                                         if (first != i)
1813                                         {
1814                                                 handle<Bezier> bezier_(new Bezier());
1815                                                 bezier_->p1=bezier.p1;
1816                                                 bezier_->c1=bezier.c1;
1817                                                 bezier_->p2=bezier.p2;
1818                                                 bezier_->c2=bezier.c2;
1819                                                 add_bezier(bezier_);
1820                                                 last_bezier()->signal_user_click(2).connect(
1821                                                         sigc::bind(
1822                                                                 sigc::mem_fun(
1823                                                                         *canvas_view,
1824                                                                         &studio::CanvasView::popup_param_menu_bezier),
1825                                                                 synfigapp::ValueDesc(value_node,i)));
1826                                         }
1827                                 }
1828
1829                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1830                                 {
1831                                         duck = first_duck;
1832
1833                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1834                                         bezier.p2=bezier.c2=duck;
1835
1836                                         handle<Bezier> bezier_(new Bezier());
1837                                         bezier_->p1=bezier.p1;
1838                                         bezier_->c1=bezier.c1;
1839                                         bezier_->p2=bezier.p2;
1840                                         bezier_->c2=bezier.c2;
1841                                         add_bezier(bezier_);
1842                                         last_bezier()->signal_user_click(2).connect(
1843                                                 sigc::bind(
1844                                                         sigc::mem_fun(
1845                                                                 *canvas_view,
1846                                                                 &studio::CanvasView::popup_param_menu_bezier),
1847                                                         synfigapp::ValueDesc(value_node,first)));
1848                                 }
1849                         }
1850                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1851                         {
1852                                 for(i=0;i<value_node->link_count();i++)
1853                                 {
1854                                         if(!value_node->list[i].status_at_time(get_time()))
1855                                                 continue;
1856                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1857                                                 return false;
1858                                 }
1859                         }
1860                         else
1861                                 return false;
1862                 }
1863                 else
1864                 {
1865                         // WRITEME
1866                 }
1867
1868                 return true;
1869         }
1870
1871         break;
1872         default:
1873                 break;
1874         }
1875         return false;
1876 }