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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file duckmatic.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32 #include <fstream>
  33 #include <iostream>
  34 #include <algorithm>
  35
  36 #include <ETL/hermite>
  37
  38 #include "duckmatic.h"
  39 #include <synfigapp/value_desc.h>
  40 #include <synfig/general.h>
  41 #include <synfig/paramdesc.h>
  42 #include <synfig/valuenode_timedswap.h>
  43 #include <synfig/valuenode_animated.h>
  44 #include <synfig/valuenode_composite.h>
  45 #include <synfig/valuenode_scale.h>
  46 #include <synfig/valuenode_bline.h>
  47
  48 #include <synfig/curve_helper.h>
  49
  50 #include <sigc++/retype_return.h>
  51 #include <sigc++/retype.h>
  52 #include <sigc++/hide.h>
  53 #include <sigc++/bind.h>
  54
  55 #include "canvasview.h"
  56
  57 #include "onemoment.h"
  58
  59 #include "general.h"
  60
  61 #endif
  62
  63 /* === U S I N G =========================================================== */
  64
  65 using namespace std;
  66 using namespace etl;
  67 using namespace synfig;
  68 using namespace studio;
  69
  70 /* === M A C R O S ========================================================= */
  71
  72 /* 0.33333333333333333 makes for nice short tangent handles,
  73    1.0 makes them draw as their real length */
  74 #define TANGENT_HANDLE_SCALE 0.33333333333333333
  75
  76 /* leave this alone or the bezier won't lie on top of the bline */
  77 #define TANGENT_BEZIER_SCALE 0.33333333333333333
  78
  79 /* === G L O B A L S ======================================================= */
  80
  81 /* === P R O C E D U R E S ================================================= */
  82
  83 /* === M E T H O D S ======================================================= */
  84
  85 /* === E N T R Y P O I N T ================================================= */
  86
  87 Duckmatic::Duckmatic():
  88         type_mask(Duck::TYPE_ALL-Duck::TYPE_WIDTH),
  89         grid_snap(false),
  90         guide_snap(false),
  91         grid_size(1.0/4.0,1.0/4.0),
  92         show_persistent_strokes(true)
  93 {
  94         axis_lock=false;
  95         drag_offset_=Point(0,0);
  96         clear_duck_dragger();
  97 }
  98
  99 Duckmatic::~Duckmatic()
 100 {
 101         clear_ducks();
 102
 103         if (Duck::duck_count)
 104                 synfig::error("%d ducks not yet deleted!", Duck::duck_count);
 105
 106         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
 107                 synfig::info("Duckmatic::~Duckmatic(): Deleted");
 108 }
 109
 110 void
 111 Duckmatic::set_flip_x(bool flip_x)
 112 {
 113         flip_x_ = flip_x;
 114 }
 115
 116 void
 117 Duckmatic::set_flip_y(bool flip_y)
 118 {
 119         flip_y_ = flip_y;
 120 }
 121
 122 void
 123 Duckmatic::clear_ducks()
 124 {
 125         duck_data_share_map.clear();
 126         duck_map.clear();
 127
 128         //duck_list_.clear();
 129         bezier_list_.clear();
 130         stroke_list_.clear();
 131
 132         if(show_persistent_strokes)
 133                 stroke_list_=persistent_stroke_list_;
 134 }
 135
 136 //! Returns \a true if the given duck is currently selected
 137 bool
 138 Duckmatic::duck_is_selected(const etl::handle<Duck> &duck)const
 139 {
 140         return duck && selected_ducks.count(duck->get_guid());
 141 }
 142
 143 void
 144 Duckmatic::set_grid_size(const synfig::Vector &s)
 145 {
 146         if(grid_size!=s)
 147         {
 148                 grid_size=s;
 149                 signal_grid_changed();
 150         }
 151 }
 152
 153 void
 154 Duckmatic::set_grid_snap(bool x)
 155 {
 156         if(grid_snap!=x)
 157         {
 158                 grid_snap=x;
 159                 signal_grid_changed();
 160         }
 161 }
 162
 163 void
 164 Duckmatic::set_guide_snap(bool x)
 165 {
 166         if(guide_snap!=x)
 167         {
 168                 guide_snap=x;
 169                 signal_grid_changed();
 170         }
 171 }
 172
 173 Duckmatic::GuideList::iterator
 174 Duckmatic::find_guide_x(synfig::Point pos, float radius)
 175 {
 176         GuideList::iterator iter,best(guide_list_x_.end());
 177         float dist(radius);
 178         for(iter=guide_list_x_.begin();iter!=guide_list_x_.end();++iter)
 179         {
 180                 float amount(abs(*iter-pos[0]));
 181                 if(amount<dist)
 182                 {
 183                         dist=amount;
 184                         best=iter;
 185                 }
 186         }
 187         return best;
 188 }
 189
 190 Duckmatic::GuideList::iterator
 191 Duckmatic::find_guide_y(synfig::Point pos, float radius)
 192 {
 193         GuideList::iterator iter,best(guide_list_y_.end());
 194         float dist(radius);
 195         for(iter=guide_list_y_.begin();iter!=guide_list_y_.end();++iter)
 196         {
 197                 float amount(abs(*iter-pos[1]));
 198                 if(amount<=dist)
 199                 {
 200                         dist=amount;
 201                         best=iter;
 202                 }
 203         }
 204         return best;
 205 }
 206
 207 void
 208 Duckmatic::clear_selected_ducks()
 209 {
 210         selected_ducks.clear();
 211         signal_duck_selection_changed_();
 212 }
 213
 214 etl::handle<Duckmatic::Duck>
 215 Duckmatic::get_selected_duck()const
 216 {
 217         if(selected_ducks.empty() || duck_map.empty())
 218                 return 0;
 219         return duck_map.find(*selected_ducks.begin())->second;
 220 }
 221
 222 void
 223 Duckmatic::refresh_selected_ducks()
 224 {
 225 /*
 226         std::set<etl::handle<Duck> >::iterator iter;
 227         std::set<etl::handle<Duck> > new_set;
 228         if(duck_list().empty())
 229         {
 230                 selected_duck_list.clear();
 231                 signal_duck_selection_changed_();
 232                 return;
 233         }
 234
 235         for(iter=selected_duck_list.begin();iter!=selected_duck_list.end();++iter)
 236         {
 237                 etl::handle<Duck> similar(find_similar_duck(*iter));
 238                 if(similar)
 239                 {
 240                         new_set.insert(similar);
 241                 }
 242         }
 243         selected_duck_list=new_set;
 244 */
 245         GUIDSet old_set(selected_ducks);
 246         GUIDSet::const_iterator iter;
 247
 248         for(iter=old_set.begin();iter!=old_set.end();++iter)
 249         {
 250                 if(duck_map.count(*iter)==0)
 251                         selected_ducks.erase(*iter);
 252         }
 253
 254         signal_duck_selection_changed_();
 255 }
 256
 257 bool
 258 Duckmatic::is_duck_group_selectable(const etl::handle<Duck>& x)const
 259 {
 260         const Type type(get_type_mask());
 261
 262         if (((x->get_type() && (!(type & x->get_type()))) ||
 263                  !x->get_editable()))
 264                 return false;
 265
 266         if(x->get_value_desc().parent_is_layer_param() && type & Duck::TYPE_POSITION)
 267         {
 268                 Layer::Handle layer(x->get_value_desc().get_layer());
 269                 String layer_name(layer->get_name());
 270
 271                 if (layer_name == "outline" || layer_name == "region" || layer_name == "plant" ||
 272                         layer_name == "polygon" || layer_name == "curve_gradient")
 273                         return false;
 274
 275                 if((layer_name=="PasteCanvas"|| layer_name=="paste_canvas") &&
 276                    !layer->get_param("children_lock").get(bool()))
 277                         return false;
 278         }
 279         return true;
 280 }
 281
 282 void
 283 Duckmatic::select_all_ducks()
 284 {
 285         DuckMap::const_iterator iter;
 286         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 287                 if(is_duck_group_selectable(iter->second))
 288                         select_duck(iter->second);
 289 }
 290
 291 void
 292 Duckmatic::toggle_select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 293 {
 294         Vector vmin, vmax;
 295         vmin[0]=std::min(tl[0],br[0]);
 296         vmin[1]=std::min(tl[1],br[1]);
 297         vmax[0]=std::max(tl[0],br[0]);
 298         vmax[1]=std::max(tl[1],br[1]);
 299
 300         DuckMap::const_iterator iter;
 301         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 302         {
 303                 Point p(iter->second->get_trans_point());
 304                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1] &&
 305                    is_duck_group_selectable(iter->second))
 306                         toggle_select_duck(iter->second);
 307         }
 308 }
 309
 310 void
 311 Duckmatic::select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 312 {
 313         Vector vmin, vmax;
 314         vmin[0]=std::min(tl[0],br[0]);
 315         vmin[1]=std::min(tl[1],br[1]);
 316         vmax[0]=std::max(tl[0],br[0]);
 317         vmax[1]=std::max(tl[1],br[1]);
 318
 319 //      Type type(get_type_mask());
 320
 321         DuckMap::const_iterator iter;
 322         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 323         {
 324                 Point p(iter->second->get_trans_point());
 325                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1])
 326                 {
 327                         if(is_duck_group_selectable(iter->second))
 328                                 select_duck(iter->second);
 329                 }
 330         }
 331 }
 332
 333 int
 334 Duckmatic::count_selected_ducks()const
 335 {
 336         return selected_ducks.size();
 337 }
 338
 339 void
 340 Duckmatic::select_duck(const etl::handle<Duck> &duck)
 341 {
 342         if(duck)
 343         {
 344                 selected_ducks.insert(duck->get_guid());
 345                 signal_duck_selection_changed_();
 346         }
 347 }
 348
 349 DuckList
 350 Duckmatic::get_selected_ducks()const
 351 {
 352         DuckList ret;
 353         GUIDSet::const_iterator iter;
 354         const Type type(get_type_mask());
 355
 356         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 357         {
 358                 const DuckMap::const_iterator d_iter(duck_map.find(*iter));
 359
 360                 if(d_iter==duck_map.end())
 361                         continue;
 362
 363                 if(( d_iter->second->get_type() && (!(type & d_iter->second->get_type())) ) )
 364                         continue;
 365
 366                 ret.push_back(d_iter->second);
 367         }
 368         return ret;
 369 }
 370
 371 DuckList
 372 Duckmatic::get_duck_list()const
 373 {
 374         DuckList ret;
 375         DuckMap::const_iterator iter;
 376         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 377                 ret.push_back(iter->second);
 378         return ret;
 379 }
 380
 381 void
 382 Duckmatic::unselect_duck(const etl::handle<Duck> &duck)
 383 {
 384         if(duck && selected_ducks.count(duck->get_guid()))
 385         {
 386                 selected_ducks.erase(duck->get_guid());
 387                 signal_duck_selection_changed_();
 388         }
 389 }
 390
 391 void
 392 Duckmatic::toggle_select_duck(const etl::handle<Duck> &duck)
 393 {
 394         if(duck_is_selected(duck))
 395                 unselect_duck(duck);
 396         else
 397                 select_duck(duck);
 398 }
 399
 400 void
 401 Duckmatic::translate_selected_ducks(const synfig::Vector& vector)
 402 {
 403         if(duck_dragger_)
 404                 duck_dragger_->duck_drag(this,vector);
 405 }
 406
 407 void
 408 Duckmatic::start_duck_drag(const synfig::Vector& offset)
 409 {
 410         if(duck_dragger_)
 411                 duck_dragger_->begin_duck_drag(this,offset);
 412
 413         //drag_offset_=offset;
 414         drag_offset_=find_duck(offset)->get_trans_point();
 415 }
 416
 417 bool
 418 Duckmatic::end_duck_drag()
 419 {
 420         if(duck_dragger_)
 421                 return duck_dragger_->end_duck_drag(this);
 422         return false;
 423 }
 424
 425 Point
 426 Duckmatic::snap_point_to_grid(const synfig::Point& x, float radius)const
 427 {
 428         Point ret(x);
 429
 430         GuideList::const_iterator guide_x,guide_y;
 431         bool has_guide_x(false), has_guide_y(false);
 432
 433         guide_x=find_guide_x(ret,radius);
 434         if(guide_x!=guide_list_x_.end())
 435                 has_guide_x=true;
 436
 437         guide_y=find_guide_y(ret,radius);
 438         if(guide_y!=guide_list_y_.end())
 439                 has_guide_y=true;
 440
 441         if(get_grid_snap())
 442         {
 443                 Point snap(
 444                         floor(ret[0]/get_grid_size()[0]+0.5)*get_grid_size()[0],
 445                         floor(ret[1]/get_grid_size()[1]+0.5)*get_grid_size()[1]);
 446
 447                 if(abs(snap[0]-ret[0])<=radius && (!has_guide_x || abs(snap[0]-ret[0])<=abs(*guide_x-ret[0])))
 448                         ret[0]=snap[0],has_guide_x=false;
 449                 if(abs(snap[1]-ret[1])<=radius && (!has_guide_y || abs(snap[1]-ret[1])<=abs(*guide_y-ret[1])))
 450                         ret[1]=snap[1],has_guide_y=false;
 451         }
 452
 453         if(guide_snap)
 454         {
 455                 if(has_guide_x)
 456                         ret[0]=*guide_x;
 457                 if(has_guide_y)
 458                         ret[1]=*guide_y;
 459         }
 460
 461         if(axis_lock)
 462         {
 463                 ret-=drag_offset_;
 464                 if(abs(ret[0])<abs(ret[1]))
 465                         ret[0]=0;
 466                 else
 467                         ret[1]=0;
 468                 ret+=drag_offset_;
 469         }
 470
 471         return ret;
 472 }
 473
 474 void
 475 DuckDrag_Translate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 476 {
 477         last_translate_=Vector(0,0);
 478         {
 479                 drag_offset_=duckmatic->find_duck(offset)->get_trans_point();
 480
 481                 snap=Vector(0,0);
 482         }
 483
 484         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 485         DuckList::const_iterator iter;
 486
 487         positions.clear();
 488         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 489         {
 490                 Point p((*iter)->get_trans_point());
 491                 positions.push_back(p);
 492         }
 493 }
 494
 495 bool
 496 DuckDrag_Translate::end_duck_drag(Duckmatic* duckmatic)
 497 {
 498         if(last_translate_.mag()>0.0001)
 499         {
 500                 duckmatic->signal_edited_selected_ducks();
 501                 return true;
 502         }
 503         else
 504         {
 505                 duckmatic->signal_user_click_selected_ducks(0);
 506                 return false;
 507         }
 508 }
 509
 510 void
 511 DuckDrag_Translate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 512 {
 513         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 514         DuckList::const_iterator iter;
 515
 516         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-drag_offset_);
 517         int i;
 518
 519         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 520         {
 521                 if((*iter)->get_type()!=Duck::TYPE_VERTEX &&
 522                    (*iter)->get_type()!=Duck::TYPE_POSITION)
 523                         continue;
 524                 (*iter)->set_trans_point(positions[i]+vect);
 525         }
 526         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 527         {
 528                 if((*iter)->get_type()==Duck::TYPE_VERTEX ||
 529                    (*iter)->get_type()==Duck::TYPE_POSITION)
 530                         continue;
 531                 (*iter)->set_trans_point(positions[i]+vect);
 532         }
 533         last_translate_=vect;
 534 }
 535
 536 void
 537 Duckmatic::signal_edited_selected_ducks()
 538 {
 539         const DuckList ducks(get_selected_ducks());
 540         DuckList::const_iterator iter;
 541
 542         synfig::GUIDSet old_set(selected_ducks);
 543
 544         // If we have more than 20 things to move, then display
 545         // something to explain that it may take a moment
 546         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 547
 548         // Go ahead and call everyone's signals
 549         for(iter=ducks.begin();iter!=ducks.end();++iter)
 550         {
 551                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 552                 {
 553                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 554                         {
 555                                 selected_ducks=old_set;
 556                                 throw String("Bad edit");
 557                         }
 558                 }
 559                 else if (App::restrict_radius_ducks &&
 560                                  (*iter)->is_radius())
 561                 {
 562                         Point point((*iter)->get_point());
 563                         bool changed = false;
 564
 565                         if (point[0] * (flip_x_ ? -1 : 1) < 0)
 566                         {
 567                                 point[0] = 0;
 568                                 changed = true;
 569                         }
 570                         if (point[1] * (flip_y_ ? -1 : 1) < 0)
 571                         {
 572                                 point[1] = 0;
 573                                 changed = true;
 574                         }
 575
 576                         if (changed) (*iter)->set_point(point);
 577
 578                         if(!(*iter)->signal_edited()(point))
 579                         {
 580                                 selected_ducks=old_set;
 581                                 throw String("Bad edit");
 582                         }
 583                 }
 584                 else
 585                 {
 586                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 587                         {
 588                                 selected_ducks=old_set;
 589                                 throw String("Bad edit");
 590                         }
 591                 }
 592         }
 593         selected_ducks=old_set;
 594 }
 595
 596 void
 597 Duckmatic::signal_user_click_selected_ducks(int button)
 598 {
 599         const DuckList ducks(get_selected_ducks());
 600         DuckList::const_iterator iter;
 601
 602         for(iter=ducks.begin();iter!=ducks.end();++iter)
 603         {
 604                 (*iter)->signal_user_click(button)();
 605         }
 606 }
 607
 608 void
 609 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 610 {
 611         //if(!duck_map.count(duck->get_guid()))
 612         {
 613                 if(duck_data_share_map.count(duck->get_data_guid()))
 614                 {
 615                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 616                 }
 617                 else
 618                 {
 619                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 620                         duck->set_shared_point(point);
 621                         duck_data_share_map[duck->get_data_guid()]=point;
 622                 }
 623
 624                 duck_map.insert(duck);
 625         }
 626
 627         last_duck_guid=duck->get_guid();
 628 }
 629
 630 void
 631 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 632 {
 633         bezier_list_.push_back(bezier);
 634 }
 635
 636 void
 637 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 638 {
 639         assert(stroke_point_list);
 640
 641         std::list<etl::handle<Stroke> >::iterator iter;
 642
 643         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 644         {
 645                 if((*iter)->stroke_data==stroke_point_list)
 646                         return;
 647         }
 648
 649         etl::handle<Stroke> stroke(new Stroke());
 650
 651         stroke->stroke_data=stroke_point_list;
 652         stroke->color=color;
 653
 654         stroke_list_.push_back(stroke);
 655 }
 656
 657 void
 658 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 659 {
 660         add_stroke(stroke_point_list,color);
 661         persistent_stroke_list_.push_back(stroke_list_.back());
 662 }
 663
 664 void
 665 Duckmatic::clear_persistent_strokes()
 666 {
 667         persistent_stroke_list_.clear();
 668 }
 669
 670 void
 671 Duckmatic::set_show_persistent_strokes(bool x)
 672 {
 673         if(x!=show_persistent_strokes)
 674         {
 675                 show_persistent_strokes=x;
 676                 if(x)
 677                         stroke_list_=persistent_stroke_list_;
 678                 else
 679                         stroke_list_.clear();
 680         }
 681 }
 682
 683 void
 684 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 685 {
 686         duck_map.erase(duck->get_guid());
 687 }
 688
 689 etl::handle<Duckmatic::Duck>
 690 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 691 {
 692         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 693         if(iter!=duck_map.end())
 694                 return iter->second;
 695         return 0;
 696
 697 /*      std::list<handle<Duck> >::reverse_iterator iter;
 698
 699         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 700         {
 701                 if(*iter!=duck && **iter==*duck)
 702                 {
 703                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 704                         return *iter;
 705                 }
 706         }
 707         return 0;
 708 */
 709 }
 710
 711 etl::handle<Duckmatic::Duck>
 712 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 713 {
 714         etl::handle<Duck> similar(find_similar_duck(duck));
 715         if(!similar)
 716         {
 717                 add_duck(duck);
 718                 return duck;
 719         }
 720         return similar;
 721 }
 722
 723 void
 724 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 725 {
 726         std::list<handle<Bezier> >::iterator iter;
 727
 728         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 729         {
 730                 if(*iter==bezier)
 731                 {
 732                         bezier_list_.erase(iter);
 733                         return;
 734                 }
 735         }
 736         synfig::warning("Unable to find bezier to erase!");
 737 }
 738
 739 etl::handle<Duckmatic::Duck>
 740 Duckmatic::last_duck()const
 741 {
 742         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 743         if(iter!=duck_map.end())
 744                 return iter->second;
 745         return 0;
 746 }
 747
 748 etl::handle<Duckmatic::Bezier>
 749 Duckmatic::last_bezier()const
 750 {
 751         return bezier_list_.back();
 752 }
 753
 754 etl::handle<Duckmatic::Duck>
 755 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 756 {
 757         if(radius==0)radius=10000000;
 758
 759         if(type==Duck::TYPE_DEFAULT)
 760                 type=get_type_mask();
 761
 762         Real closest(10000000);
 763         etl::handle<Duck> ret;
 764
 765         DuckMap::const_iterator iter;
 766
 767         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 768         {
 769                 const Duck::Handle& duck(iter->second);
 770
 771                 if(duck->get_ignore())
 772                         continue;
 773                 Real dist((duck->get_trans_point()-point).mag_squared());
 774
 775                 if(duck->get_type()&Duck::TYPE_VERTEX)
 776                         dist*=1.0001;
 777                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 778                         dist*=0.9999;
 779
 780                 if(dist<=closest && !( duck->get_type() && (!(type & duck->get_type())) ) )
 781                 {
 782                         {
 783                                 closest=dist;
 784                                 ret=duck;
 785                         }
 786                 }
 787         }
 788
 789         if(radius==0 || closest<radius*radius)
 790                 return ret;
 791
 792         return 0;
 793 }
 794
 795 etl::handle<Duckmatic::Bezier>
 796 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 797 {
 798         return find_bezier(point,radius,radius,location);
 799 }
 800
 801 etl::handle<Duckmatic::Bezier>
 802 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 803 {
 804         if(radius==0)radius=10000000;
 805         Real closest(10000000);
 806         etl::handle<Bezier> ret;
 807
 808         bezier<Point>   curve;
 809
 810         Real    d,step;
 811         float   time = 0;
 812         float   best_time = 0;
 813
 814         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 815         {
 816                 curve[0] = (*iter)->p1->get_trans_point();
 817                 curve[1] = (*iter)->c1->get_trans_point();
 818                 curve[2] = (*iter)->c2->get_trans_point();
 819                 curve[3] = (*iter)->p2->get_trans_point();
 820                 curve.sync();
 821
 822 #if 0
 823                 // I don't know why this doesn't work
 824                 time=curve.find_closest(pos,6);
 825                 d=((curve(time)-pos).mag_squared());
 826
 827 #else
 828                 //set the step size based on the size of the picture
 829                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 830
 831                 step = d/(2*scale); //want to make the distance between lines happy
 832
 833                 step = max(step,0.01); //100 samples should be plenty
 834                 step = min(step,0.1); //10 is minimum
 835
 836                 d = find_closest(curve,pos,step,&closest,&time);
 837 #endif
 838
 839                 if(d < closest)
 840                 {
 841                         closest = d;
 842                         ret = *iter;
 843                         best_time=time;
 844                 }
 845         }
 846
 847         if(closest < radius*radius)
 848         {
 849                 if(location)
 850                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 851
 852                 return ret;
 853         }
 854
 855         return 0;
 856 }
 857
 858 bool
 859 Duckmatic::save_sketch(const synfig::String& filename)const
 860 {
 861         ChangeLocale change_locale(LC_NUMERIC, "C");
 862         std::ofstream file(filename.c_str());
 863
 864         if(!file)return false;
 865
 866         file<<"SKETCH"<<endl;
 867
 868         std::list<etl::handle<Stroke> >::const_iterator iter;
 869
 870         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 871         {
 872                 file<<"C "
 873                         <<(*iter)->color.get_r()<<' '
 874                         <<(*iter)->color.get_g()<<' '
 875                         <<(*iter)->color.get_b()
 876                 <<endl;
 877                 std::list<synfig::Point>::const_iterator viter;
 878                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 879                 {
 880                         file<<"V "
 881                                 <<(*viter)[0]<<' '
 882                                 <<(*viter)[1]
 883                         <<endl;
 884                 }
 885         }
 886         if(!file)return false;
 887         sketch_filename_=filename;
 888         signal_sketch_saved_();
 889         return true;
 890 }
 891
 892 bool
 893 Duckmatic::load_sketch(const synfig::String& filename)
 894 {
 895         ChangeLocale change_locale(LC_NUMERIC, "C");
 896         std::ifstream file(filename.c_str());
 897
 898         if(!file)
 899                 return false;
 900
 901         std::string line;
 902         getline(file,line);
 903
 904         if(line!="SKETCH")
 905         {
 906                 synfig::error("Not a sketch");
 907                 return false;
 908         }
 909
 910         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 911
 912         while(file)
 913         {
 914                 getline(file,line);
 915
 916                 if(line.empty())
 917                         continue;
 918
 919                 switch(line[0])
 920                 {
 921                 case 'C':
 922                 case 'c':
 923                         {
 924                                 stroke_data.spawn();
 925                                 float r,g,b;
 926                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
 927                                 {
 928                                         synfig::warning("Bad color line \"%s\"",line.c_str());
 929                                         r=0;g=0;b=0;
 930                                 }
 931                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
 932                         }
 933                         break;
 934                 case 'V':
 935                 case 'v':
 936                         if(!stroke_data)
 937                         {
 938                                 stroke_data.spawn();
 939                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
 940                         }
 941                         float x,y;
 942                         if(!strscanf(line,"V %f %f",&x, &y))
 943                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
 944                         else
 945                                 stroke_data->push_back(synfig::Vector(x,y));
 946                         break;
 947                 default:
 948                         synfig::warning("Unexpected sketch token '%c'",line[0]);
 949                         break;
 950                 }
 951         }
 952
 953         sketch_filename_=filename;
 954         return true;
 955 }
 956
 957 Duckmatic::Push::Push(Duckmatic *duckmatic_):
 958         duckmatic_(duckmatic_)
 959 {
 960         duck_map=duckmatic_->duck_map;
 961         bezier_list_=duckmatic_->bezier_list_;
 962         duck_data_share_map=duckmatic_->duck_data_share_map;
 963         stroke_list_=duckmatic_->stroke_list_;
 964         duck_dragger_=duckmatic_->duck_dragger_;
 965         needs_restore=true;
 966 }
 967
 968 Duckmatic::Push::~Push()
 969 {
 970         if(needs_restore)
 971                 restore();
 972 }
 973
 974 void
 975 Duckmatic::Push::restore()
 976 {
 977         duckmatic_->duck_map=duck_map;
 978         duckmatic_->bezier_list_=bezier_list_;
 979         duckmatic_->duck_data_share_map=duck_data_share_map;
 980         duckmatic_->stroke_list_=stroke_list_;
 981         duckmatic_->duck_dragger_=duck_dragger_;
 982         needs_restore=false;
 983 }
 984
 985 inline String guid_string(const synfigapp::ValueDesc& x)
 986 {
 987         if(x.parent_is_layer_param())
 988                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
 989         //if(x.is_value_node())
 990                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
 991 }
 992
 993 inline GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
 994 {
 995         GUID ret(0);
 996
 997         if(x.parent_is_layer_param())
 998         {
 999                 ret=x.get_layer()->get_guid()^GUID::hasher(x.get_param_name());
1000         }
1001         else
1002         {
1003                 ret=x.get_value_node()->get_guid();
1004         }
1005
1006         ret^=transform_stack.get_guid();
1007         return ret;
1008 }
1009
1010 /*
1011 Duck::Handle
1012 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)
1013 {
1014         GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^GUID::hasher(modifier));
1015         etl::handle<Duck> duck=new Duck();
1016
1017         return duck;
1018 }
1019 */
1020
1021 bool
1022 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)
1023 {
1024         ValueBase::Type type=value_desc.get_value_type();
1025 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1026         switch(type)
1027         {
1028         case ValueBase::TYPE_REAL:
1029
1030                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1031                 {
1032                         etl::handle<Duck> duck=new Duck();
1033                         duck->set_transform_stack(transform_stack);
1034                         duck->set_radius(true);
1035                         duck->set_type(Duck::TYPE_RADIUS);
1036
1037                         // put the duck on the right hand side of the center, whether the display is flipped or not
1038                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()) * (flip_x_ ? -1 : 1), 0));
1039                         duck->set_name(guid_string(value_desc));
1040                         if(value_desc.is_value_node())
1041                         {
1042                                 // If the ValueNode can be directly manipulated,
1043                                 // then set it as so.
1044                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1045                         }
1046                         else
1047                         {
1048                                 duck->set_editable(true);
1049                         }
1050
1051                         if(param_desc && param_desc!=REAL_COOKIE)
1052                         {
1053                                 if(!param_desc->get_origin().empty())
1054                                 {
1055                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1056                                         /*
1057                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1058                                         */
1059                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1060                                         duck->set_origin(last_duck());
1061                                 }
1062                                 duck->set_scalar(param_desc->get_scalar());
1063                         }
1064
1065                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1066                         duck->signal_edited().connect(
1067                                 sigc::bind(
1068                                         sigc::mem_fun(
1069                                                 *canvas_view,
1070                                                 &studio::CanvasView::on_duck_changed),
1071                                         value_desc));
1072                         duck->set_value_desc(value_desc);
1073
1074                         duck->signal_user_click(2).connect(
1075                                 sigc::bind(
1076                                         sigc::bind(
1077                                                 sigc::mem_fun(
1078                                                         *canvas_view,
1079                                                         &studio::CanvasView::popup_param_menu),
1080                                                 0.0f),
1081                                         value_desc));
1082
1083                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^GUID::hasher(multiple));
1084
1085                         add_duck(duck);
1086
1087                         return true;
1088                 }
1089                 break;
1090
1091         case ValueBase::TYPE_ANGLE:
1092
1093                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1094                 {
1095                         etl::handle<Duck> duck=new Duck();
1096                         duck->set_type(Duck::TYPE_ANGLE);
1097                         duck->set_transform_stack(transform_stack);
1098                         synfig::Angle angle;
1099
1100                         angle=value_desc.get_value(get_time()).get(Angle());
1101                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1102                         duck->set_name(guid_string(value_desc));
1103                         if(value_desc.is_value_node())
1104                         {
1105                                 ValueNode::Handle value_node=value_desc.get_value_node();
1106                                 //duck->set_name(strprintf("%x",value_node.get()));
1107
1108                                 // If the ValueNode can be directly manipulated,
1109                                 // then set it as so.
1110                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1111                         }
1112                         else
1113                         {
1114                                 //angle=(value_desc.get_value().get(Angle()));
1115                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1116                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1117                                 duck->set_editable(true);
1118                         }
1119
1120                         if(param_desc && param_desc!=REAL_COOKIE)
1121                         {
1122                                 if(!param_desc->get_origin().empty())
1123                                 {
1124                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1125                                         /*
1126                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1127                                         */
1128                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1129                                         duck->set_origin(last_duck());
1130                                 }
1131                                 duck->set_scalar(param_desc->get_scalar());
1132                         }
1133
1134                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1135                         duck->signal_edited_angle().clear();
1136                         duck->signal_edited_angle().connect(
1137                                 sigc::bind(
1138                                         sigc::mem_fun(
1139                                                 *canvas_view,
1140                                                 &studio::CanvasView::on_duck_angle_changed),
1141                                         value_desc));
1142                         duck->set_value_desc(value_desc);
1143
1144                         duck->signal_user_click(2).connect(
1145                                 sigc::bind(
1146                                         sigc::bind(
1147                                                 sigc::mem_fun(
1148                                                         *canvas_view,
1149                                                         &studio::CanvasView::popup_param_menu),
1150                                                 0.0f),
1151                                         value_desc));
1152                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^GUID::hasher(multiple));
1153
1154                         add_duck(duck);
1155
1156                         return true;
1157                 }
1158                 break;
1159
1160         case ValueBase::TYPE_VECTOR:
1161                 {
1162                         etl::handle<Duck> duck=new Duck();
1163                         duck->set_transform_stack(transform_stack);
1164
1165                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1166                         duck->set_name(guid_string(value_desc));
1167                         if(value_desc.is_value_node())
1168                         {
1169                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1170
1171                                 // If the ValueNode can be directly manipulated,
1172                                 // then set it as so.
1173                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1174                         }
1175                         else
1176                         {
1177                                 //duck->set_point(value_desc.get_value().get(Point()));
1178                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1179                                 duck->set_editable(true);
1180                         }
1181
1182                         // If we were passed a parameter description
1183                         if(param_desc)
1184                         {
1185                                 if(!param_desc->get_connect().empty())
1186                                 {
1187                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1188                                         Duck::Handle connect_duck;
1189                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^GUID::hasher(0))!=duck_map.end())
1190                                         {
1191                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^GUID::hasher(0)];
1192                                         }
1193                                         else
1194                                         {
1195                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1196                                                 connect_duck=last_duck();
1197                                         }
1198                                         duck->set_connect_duck(connect_duck);
1199                                 }
1200                                 if(!param_desc->get_box().empty())
1201                                 {
1202                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1203                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1204                                         duck->set_box_duck(last_duck());
1205                                 }
1206
1207                                 // If we have an origin
1208                                 if(!param_desc->get_origin().empty())
1209                                 {
1210                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1211                                         /*
1212                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1213                                         */
1214                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1215                                         duck->set_origin(last_duck());
1216                                         duck->set_type(Duck::TYPE_VERTEX);
1217                                 }
1218                                 else
1219                                         duck->set_type(Duck::TYPE_POSITION);
1220
1221                                 duck->set_scalar(param_desc->get_scalar());
1222                         }
1223                         else
1224                                 duck->set_type(Duck::TYPE_POSITION);
1225
1226                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1227                         duck->signal_edited().connect(
1228                                 sigc::bind(
1229                                         sigc::mem_fun(
1230                                                 *canvas_view,
1231                                                 &studio::CanvasView::on_duck_changed),
1232                                         value_desc));
1233                         duck->set_value_desc(value_desc);
1234
1235                         duck->signal_user_click(2).connect(
1236                                 sigc::bind(
1237                                         sigc::bind(
1238                                                 sigc::mem_fun(
1239                                                         *canvas_view,
1240                                                         &studio::CanvasView::popup_param_menu),
1241                                                 1.0f),
1242                                         value_desc));
1243                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^GUID::hasher(multiple));
1244                         add_duck(duck);
1245
1246                         return true;
1247                 }
1248                 break;
1249 /*      case ValueBase::TYPE_SEGMENT:
1250                 {
1251                         etl::handle<Bezier> bezier(new Bezier());
1252                         ValueNode_Composite::Handle value_node;
1253
1254                         if(value_desc.is_value_node() &&
1255                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1256                         {
1257                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1258                                         return false;
1259                                 bezier->p1=last_duck();
1260                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1261                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1262                                         return false;
1263                                 bezier->c1=last_duck();
1264                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1265                                 bezier->c1->set_origin(bezier->p1);
1266                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1267                                 bezier->c1->set_tangent(true);
1268
1269                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1270                                         return false;
1271                                 bezier->p2=last_duck();
1272                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1273                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1274                                         return false;
1275                                 bezier->c2=last_duck();
1276                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1277                                 bezier->c2->set_origin(bezier->p2);
1278                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1279                                 bezier->c2->set_tangent(true);
1280
1281                                 bezier->signal_user_click(2).connect(
1282                                         sigc::bind(
1283                                                 sigc::mem_fun(
1284                                                         *canvas_view,
1285                                                         &studio::CanvasView::popup_param_menu_bezier),
1286                                                 value_desc));
1287
1288                                 add_bezier(bezier);
1289                         }
1290                         else if(value_desc.get_value().is_valid())
1291                         {
1292                                 Segment segment=value_desc.get_value();
1293                                 etl::handle<Duck> duck_p,duck_c;
1294                                 synfig::String name;
1295                                 if(param_desc)
1296                                 {
1297                                         name=param_desc->get_local_name();
1298                                 }
1299                                 else
1300                                 {
1301                                         name=guid_string(value_desc);
1302                                 }
1303
1304                                 duck_p=new class Duck(segment.p1);
1305                                 duck_p->set_name(name+".P1");
1306                                 duck_p->set_type(Duck::TYPE_VERTEX);
1307                                 add_duck(duck_p);
1308
1309                                 duck_c=new class Duck(segment.t1);
1310                                 duck_c->set_name(name+".T1");
1311                                 duck_c->set_type(Duck::TYPE_TANGENT);
1312                                 add_duck(duck_c);
1313                                 duck_c->set_origin(duck_p);
1314                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1315                                 duck_c->set_tangent(true);
1316
1317                                 bezier->p1=duck_p;
1318                                 bezier->c1=duck_c;
1319
1320                                 duck_p=new class Duck(segment.p2);
1321                                 duck_p->set_name(name+".P2");
1322                                 duck_p->set_type(Duck::TYPE_VERTEX);
1323                                 add_duck(duck_p);
1324
1325                                 duck_c=new class Duck(segment.t2);
1326                                 duck_c->set_type(Duck::TYPE_TANGENT);
1327                                 duck_c->set_name(name+".T2");
1328                                 add_duck(duck_c);
1329                                 duck_c->set_origin(duck_p);
1330                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1331                                 duck_c->set_tangent(true);
1332
1333                                 bezier->p2=duck_p;
1334                                 bezier->c2=duck_c;
1335                                 add_bezier(bezier);
1336                         }
1337
1338                         return true;
1339                 }
1340                 break;
1341 */
1342         case ValueBase::TYPE_BLINEPOINT:
1343         {
1344
1345                 if(value_desc.is_value_node() &&
1346                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1347                 {
1348                         ValueNode_Composite::Handle value_node;
1349                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1350
1351                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1352                                 return false;
1353                         etl::handle<Duck> vertex_duck(last_duck());
1354                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1355                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1356                                 return false;
1357                         etl::handle<Duck> t1_duck(last_duck());
1358
1359                         t1_duck->set_origin(vertex_duck);
1360                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1361                         t1_duck->set_tangent(true);
1362
1363                         etl::handle<Duck> t2_duck;
1364
1365                         // If the tangents are split
1366                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1367                         {
1368                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1369                                         return false;
1370                                 t2_duck=last_duck();
1371                                 t2_duck->set_origin(vertex_duck);
1372                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1373                                 t2_duck->set_tangent(true);
1374                         }
1375                         else
1376                         {
1377                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1378                                         return false;
1379                                 t2_duck=last_duck();
1380                                 t2_duck->set_origin(vertex_duck);
1381                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1382                                 t2_duck->set_tangent(true);
1383                         }
1384                         return true;
1385                 }
1386
1387         }
1388         break;
1389         case ValueBase::TYPE_LIST:
1390         {
1391                 // Check for BLine
1392                 if (value_desc.is_value_node() &&
1393                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1394                 {
1395                         ValueNode_BLine::Handle value_node;
1396                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1397
1398                         int i,first=-1;
1399
1400                         etl::handle<Bezier> bezier;
1401                         etl::handle<Duck> first_duck;
1402                         etl::handle<Duck> duck, tduck;
1403
1404                         for (i = 0; i < value_node->link_count(); i++)
1405                         {
1406                                 float amount(value_node->list[i].amount_at_time(get_time()));
1407
1408                                 // skip vertices that aren't fully on
1409                                 if (amount < 0.9999f)
1410                                         continue;
1411
1412                                 // remember the index of the first vertex we didn't skip
1413                                 if (first == -1)
1414                                         first = i;
1415
1416                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1417
1418                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1419                                 ValueNode_Composite::Handle composite_vertex_value_node(
1420                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1421
1422                                 // add the vertex duck - it's a composite
1423                                 if(composite_vertex_value_node)
1424                                 {
1425                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1426                                         {
1427                                                 duck=last_duck();
1428                                                 if(i==first)
1429                                                         first_duck=duck;
1430                                                 duck->set_type(Duck::TYPE_VERTEX);
1431
1432                                                 duck->signal_user_click(2).clear();
1433                                                 duck->signal_user_click(2).connect(
1434                                                         sigc::bind(
1435                                                                 sigc::bind(
1436                                                                         sigc::mem_fun(
1437                                                                                 *canvas_view,
1438                                                                                 &studio::CanvasView::popup_param_menu),
1439                                                                         1.0f),
1440                                                                 synfigapp::ValueDesc(value_node,i)));
1441                                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1442
1443                                                 if(param_desc)
1444                                                 {
1445                                                         if(!param_desc->get_origin().empty())
1446                                                         {
1447                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1448                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1449                                                                 duck->set_origin(last_duck());
1450 /*
1451                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1452                                                                 if(value.same_type_as(synfig::Point()))
1453                                                                         duck->set_origin(value.get(synfig::Point()));
1454 */
1455                                                         }
1456                                                 }
1457                                         }
1458                                         else
1459                                                 return false;
1460                                 }
1461                                 // else it's not a composite
1462                                 else
1463                                 {
1464                                         duck=new Duck(bline_point.get_vertex());
1465                                         if(i==first)
1466                                                 first_duck=duck;
1467                                         duck->set_transform_stack(transform_stack);
1468                                         duck->set_editable(false);
1469                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1470                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1471
1472                                         duck->set_type(Duck::TYPE_VERTEX);
1473                                         if(param_desc)
1474                                         {
1475                                                 if(!param_desc->get_origin().empty())
1476                                                 {
1477                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1478                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1479                                                                 duck->set_origin(last_duck());
1480 /*
1481                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1482                                                                 if(value.same_type_as(synfig::Point()))
1483                                                                         duck->set_origin(value.get(synfig::Point()));
1484 */
1485                                                 }
1486                                         }
1487                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^GUID::hasher(".v"));
1488                                         duck=add_similar_duck(duck);
1489 //                                      add_duck(duck);
1490                                 }
1491
1492                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1493                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1494                                         !param_desc)
1495                                 {
1496                                         etl::handle<Duck> width;
1497                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1498                                         {
1499                                                 width=last_duck();
1500                                                 width->set_origin(duck);
1501                                                 width->set_type(Duck::TYPE_WIDTH);
1502                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1503
1504                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1505                                                 if (param_desc)
1506                                                 {
1507                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1508                                                         if(value.same_type_as(synfig::Real()))
1509                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1510                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1511                                                         else
1512                                                                 width->set_scalar(0.5f);
1513                                                 }
1514                                                 // otherwise just present the raw unscaled width
1515                                                 else
1516                                                         width->set_scalar(0.5f);
1517                                         }
1518                                         else
1519                                                 synfig::error("Unable to add width duck!");
1520                                 }
1521
1522                                 // each bezier uses t2 of one point and t1 of the next
1523                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1524                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1525                                 if(bezier)
1526                                 {
1527                                         // Add the tangent1 duck
1528                                         if(composite_vertex_value_node)
1529                                         {
1530                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1531                                                         return false;
1532                                                 tduck=last_duck();
1533                                         }
1534                                         else
1535                                         {
1536                                                 tduck=new Duck(bline_point.get_tangent1());
1537                                                 tduck->set_transform_stack(transform_stack);
1538                                                 tduck->set_editable(false);
1539                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1540 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1541                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^GUID::hasher(".t1"));
1542                                                 tduck=add_similar_duck(tduck);
1543 //                                              add_duck(duck);
1544                                         }
1545
1546                                         tduck->set_origin(duck);
1547                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1548                                         tduck->set_tangent(true);
1549
1550                                         bezier->p2=duck;
1551                                         bezier->c2=tduck;
1552
1553                                         bezier->signal_user_click(2).connect(
1554                                                 sigc::bind(
1555                                                         sigc::mem_fun(
1556                                                                 *canvas_view,
1557                                                                 &studio::CanvasView::popup_param_menu_bezier),
1558                                                         synfigapp::ValueDesc(value_node,i)));
1559
1560                                         duck->signal_user_click(2).clear();
1561                                         duck->signal_user_click(2).connect(
1562                                                 sigc::bind(
1563                                                         sigc::bind(
1564                                                                 sigc::mem_fun(
1565                                                                         *canvas_view,
1566                                                                         &studio::CanvasView::popup_param_menu),
1567                                                                 1.0f),
1568                                                         synfigapp::ValueDesc(value_node,i)));
1569                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1570
1571                                         add_bezier(bezier);
1572                                         bezier=0;
1573                                 }
1574
1575                                 // don't start a new bezier for the last point in the line if we're not looped
1576                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1577                                         continue;
1578
1579                                 bezier=new Bezier();
1580
1581                                 // Add the tangent2 duck
1582                                 if(composite_vertex_value_node)
1583                                 {
1584                                         int i=bline_point.get_split_tangent_flag()?5:4;
1585                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1586                                                 return false;
1587                                         tduck=last_duck();
1588                                 }
1589                                 else
1590                                 {
1591                                         if(bline_point.get_split_tangent_flag())
1592                                                 tduck=new Duck(bline_point.get_tangent2());
1593                                         else
1594                                                 tduck=new Duck(bline_point.get_tangent1());
1595
1596                                         tduck->set_transform_stack(transform_stack);
1597                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1598                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^GUID::hasher(".t2"));
1599                                         tduck->set_editable(false);
1600                                         tduck=add_similar_duck(tduck);
1601 //                                      add_duck(duck);
1602                                         if(param_desc)
1603                                         {
1604                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1605                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1606                                                                 duck->set_origin(last_duck());
1607 /*
1608                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1609                                                                 if(value.same_type_as(synfig::Point()))
1610                                                                         duck->set_origin(value.get(synfig::Point()));
1611 */
1612 //                                              if(!param_desc->get_origin().empty())
1613 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1614                                         }
1615                                         duck->signal_user_click(2).clear();
1616                                         duck->signal_user_click(2).connect(
1617                                                 sigc::bind(
1618                                                         sigc::bind(
1619                                                                 sigc::mem_fun(
1620                                                                         *canvas_view,
1621                                                                         &studio::CanvasView::popup_param_menu),
1622                                                                 1.0f),
1623                                                         synfigapp::ValueDesc(value_node,0)));
1624                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1625
1626                                 }
1627
1628                                 tduck->set_origin(duck);
1629                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1630                                 tduck->set_tangent(true);
1631
1632                                 bezier->p1=duck;
1633                                 bezier->c1=tduck;
1634                         }
1635
1636                         // Loop if necessary
1637                         if(bezier && value_node->get_loop())
1638                         {
1639                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1640
1641                                 ValueNode_Composite::Handle composite_vertex_value_node(
1642                                         ValueNode_Composite::Handle::cast_dynamic(
1643                                                 value_node->get_link(first)));
1644
1645                                 // Add the vertex duck
1646                                 duck=first_duck;
1647
1648                                 // Add the tangent1 duck
1649                                 if(composite_vertex_value_node)
1650                                 {
1651                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1652                                                 return false;
1653                                         tduck=last_duck();
1654                                 }
1655                                 else
1656                                 {
1657                                         tduck=new Duck(bline_point.get_tangent1());
1658                                         tduck->set_transform_stack(transform_stack);
1659                                         tduck->set_editable(false);
1660                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1661                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1662                                         tduck=add_similar_duck(tduck);
1663                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^GUID::hasher(".t1"));
1664                                         //add_duck(duck);
1665                                 }
1666
1667                                 tduck->set_origin(duck);
1668                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1669                                 tduck->set_tangent(true);
1670
1671                                 bezier->p2=duck;
1672                                 bezier->c2=tduck;
1673
1674                                 bezier->signal_user_click(2).connect(
1675                                         sigc::bind(
1676                                                 sigc::mem_fun(
1677                                                         *canvas_view,
1678                                                         &studio::CanvasView::popup_param_menu_bezier),
1679                                                 synfigapp::ValueDesc(value_node,first)));
1680
1681                                 duck->signal_user_click(2).clear();
1682                                 duck->signal_user_click(2).connect(
1683                                         sigc::bind(
1684                                                 sigc::bind(
1685                                                         sigc::mem_fun(
1686                                                                 *canvas_view,
1687                                                                 &studio::CanvasView::popup_param_menu),
1688                                                         1.0f),
1689                                                 synfigapp::ValueDesc(value_node,first)));
1690                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,first));
1691
1692                                 add_bezier(bezier);
1693                                 bezier=0;
1694                         }
1695                         return true;
1696                 }
1697                 else // Check for DynamicList
1698                 if(value_desc.is_value_node() &&
1699                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1700                 {
1701                         ValueNode_DynamicList::Handle value_node;
1702                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1703                         int i;
1704
1705                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1706                         {
1707                                 Bezier bezier;
1708                                 for(i=0;i<value_node->link_count();i++)
1709                                 {
1710                                         if(!value_node->list[i].status_at_time(get_time()))
1711                                                 continue;
1712                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1713                                                 return false;
1714                                         etl::handle<Duck> duck(last_duck());
1715
1716                                         if(param_desc)
1717                                         {
1718                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1719                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1720                                                                 duck->set_origin(last_duck());
1721 /*
1722                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1723                                                                 if(value.same_type_as(synfig::Point()))
1724                                                                         duck->set_origin(value.get(synfig::Point()));
1725 */
1726 //                                              if(!param_desc->get_origin().empty())
1727 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1728                                         }
1729                                         duck->set_type(Duck::TYPE_VERTEX);
1730                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1731                                         bezier.p2=bezier.c2=duck;
1732
1733                                         if(i>0)
1734                                         {
1735                                                 handle<Bezier> bezier_(new Bezier());
1736                                                 bezier_->p1=bezier.p1;
1737                                                 bezier_->c1=bezier.c1;
1738                                                 bezier_->p2=bezier.p2;
1739                                                 bezier_->c2=bezier.c2;
1740                                                 add_bezier(bezier_);
1741                                                 last_bezier()->signal_user_click(2).connect(
1742                                                         sigc::bind(
1743                                                                 sigc::mem_fun(
1744                                                                         *canvas_view,
1745                                                                         &studio::CanvasView::popup_param_menu_bezier),
1746                                                                 synfigapp::ValueDesc(value_node,i)));
1747                                         }
1748                                 }
1749                         }
1750                         /*else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1751                         {
1752                                 for(i=0;i<value_node->link_count();i++)
1753                                 {
1754                                         if(!value_node->list[i].status_at_time(get_time()))
1755                                                 continue;
1756                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1757                                                 return false;
1758                                 }
1759                         }
1760                         */
1761                         else
1762                                 return false;
1763                 }
1764                 else
1765                 {
1766                         // WRITEME
1767                 }
1768
1769                 return true;
1770         }
1771
1772         break;
1773         default:
1774                 break;
1775         }
1776         return false;
1777 }