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