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 #include <synfig/valuenode_blinecalctangent.h>
  48 #include <synfig/valuenode_blinecalcvertex.h>
  49 #include <synfig/valuenode_blinecalcwidth.h>
  50
  51 #include <synfig/curve_helper.h>
  52
  53 #include <sigc++/retype_return.h>
  54 #include <sigc++/retype.h>
  55 #include <sigc++/hide.h>
  56 #include <sigc++/bind.h>
  57
  58 #include "canvasview.h"
  59
  60 #include "onemoment.h"
  61
  62 #include "general.h"
  63
  64 #endif
  65
  66 /* === U S I N G =========================================================== */
  67
  68 using namespace std;
  69 using namespace etl;
  70 using namespace synfig;
  71 using namespace studio;
  72
  73 /* === M A C R O S ========================================================= */
  74
  75 /* 0.33333333333333333 makes for nice short tangent handles,
  76    1.0 makes them draw as their real length */
  77 #define TANGENT_HANDLE_SCALE 0.33333333333333333
  78
  79 /* leave this alone or the bezier won't lie on top of the bline */
  80 #define TANGENT_BEZIER_SCALE 0.33333333333333333
  81
  82 /* === G L O B A L S ======================================================= */
  83
  84 /* === P R O C E D U R E S ================================================= */
  85
  86 /* === M E T H O D S ======================================================= */
  87
  88 /* === E N T R Y P O I N T ================================================= */
  89
  90 Duckmatic::Duckmatic():
  91         type_mask(Duck::TYPE_ALL-Duck::TYPE_WIDTH),
  92         grid_snap(false),
  93         guide_snap(false),
  94         grid_size(1.0/4.0,1.0/4.0),
  95         show_persistent_strokes(true)
  96 {
  97         axis_lock=false;
  98         drag_offset_=Point(0,0);
  99         clear_duck_dragger();
 100 }
 101
 102 Duckmatic::~Duckmatic()
 103 {
 104         clear_ducks();
 105
 106         if (Duck::duck_count)
 107                 synfig::error("%d ducks not yet deleted!", Duck::duck_count);
 108
 109         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
 110                 synfig::info("Duckmatic::~Duckmatic(): Deleted");
 111 }
 112
 113 void
 114 Duckmatic::clear_ducks()
 115 {
 116         duck_data_share_map.clear();
 117         duck_map.clear();
 118
 119         //duck_list_.clear();
 120         bezier_list_.clear();
 121         stroke_list_.clear();
 122
 123         if(show_persistent_strokes)
 124                 stroke_list_=persistent_stroke_list_;
 125 }
 126
 127 //! Returns \a true if the given duck is currently selected
 128 bool
 129 Duckmatic::duck_is_selected(const etl::handle<Duck> &duck)const
 130 {
 131         return duck && selected_ducks.count(duck->get_guid());
 132 }
 133
 134 void
 135 Duckmatic::set_grid_size(const synfig::Vector &s)
 136 {
 137         if(grid_size!=s)
 138         {
 139                 grid_size=s;
 140                 signal_grid_changed();
 141         }
 142 }
 143
 144 void
 145 Duckmatic::set_grid_snap(bool x)
 146 {
 147         if(grid_snap!=x)
 148         {
 149                 grid_snap=x;
 150                 signal_grid_changed();
 151         }
 152 }
 153
 154 void
 155 Duckmatic::set_guide_snap(bool x)
 156 {
 157         if(guide_snap!=x)
 158         {
 159                 guide_snap=x;
 160                 signal_grid_changed();
 161         }
 162 }
 163
 164 Duckmatic::GuideList::iterator
 165 Duckmatic::find_guide_x(synfig::Point pos, float radius)
 166 {
 167         GuideList::iterator iter,best(guide_list_x_.end());
 168         float dist(radius);
 169         for(iter=guide_list_x_.begin();iter!=guide_list_x_.end();++iter)
 170         {
 171                 float amount(abs(*iter-pos[0]));
 172                 if(amount<dist)
 173                 {
 174                         dist=amount;
 175                         best=iter;
 176                 }
 177         }
 178         return best;
 179 }
 180
 181 Duckmatic::GuideList::iterator
 182 Duckmatic::find_guide_y(synfig::Point pos, float radius)
 183 {
 184         GuideList::iterator iter,best(guide_list_y_.end());
 185         float dist(radius);
 186         for(iter=guide_list_y_.begin();iter!=guide_list_y_.end();++iter)
 187         {
 188                 float amount(abs(*iter-pos[1]));
 189                 if(amount<=dist)
 190                 {
 191                         dist=amount;
 192                         best=iter;
 193                 }
 194         }
 195         return best;
 196 }
 197
 198 void
 199 Duckmatic::clear_selected_ducks()
 200 {
 201         selected_ducks.clear();
 202         signal_duck_selection_changed_();
 203 }
 204
 205 etl::handle<Duckmatic::Duck>
 206 Duckmatic::get_selected_duck()const
 207 {
 208         if(selected_ducks.empty() || duck_map.empty())
 209                 return 0;
 210         return duck_map.find(*selected_ducks.begin())->second;
 211 }
 212
 213 void
 214 Duckmatic::refresh_selected_ducks()
 215 {
 216 /*
 217         std::set<etl::handle<Duck> >::iterator iter;
 218         std::set<etl::handle<Duck> > new_set;
 219         if(duck_list().empty())
 220         {
 221                 selected_duck_list.clear();
 222                 signal_duck_selection_changed_();
 223                 return;
 224         }
 225
 226         for(iter=selected_duck_list.begin();iter!=selected_duck_list.end();++iter)
 227         {
 228                 etl::handle<Duck> similar(find_similar_duck(*iter));
 229                 if(similar)
 230                 {
 231                         new_set.insert(similar);
 232                 }
 233         }
 234         selected_duck_list=new_set;
 235 */
 236         GUIDSet old_set(selected_ducks);
 237         GUIDSet::const_iterator iter;
 238
 239         for(iter=old_set.begin();iter!=old_set.end();++iter)
 240         {
 241                 if(duck_map.count(*iter)==0)
 242                         selected_ducks.erase(*iter);
 243         }
 244
 245         signal_duck_selection_changed_();
 246 }
 247
 248 bool
 249 Duckmatic::is_duck_group_selectable(const etl::handle<Duck>& x)const
 250 {
 251         const Type type(get_type_mask());
 252
 253         if (((x->get_type() && (!(type & x->get_type()))) ||
 254                  !x->get_editable()))
 255                 return false;
 256
 257         if(x->get_value_desc().parent_is_layer_param() && type & Duck::TYPE_POSITION)
 258         {
 259                 Layer::Handle layer(x->get_value_desc().get_layer());
 260                 String layer_name(layer->get_name());
 261
 262                 if (layer_name == "outline" || layer_name == "region" || layer_name == "plant" ||
 263                         layer_name == "polygon" || layer_name == "curve_gradient")
 264                         return false;
 265
 266                 if((layer_name=="PasteCanvas"|| layer_name=="paste_canvas") &&
 267                    !layer->get_param("children_lock").get(bool()))
 268                         return false;
 269         }
 270         return true;
 271 }
 272
 273 void
 274 Duckmatic::select_all_ducks()
 275 {
 276         DuckMap::const_iterator iter;
 277         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 278                 if(is_duck_group_selectable(iter->second))
 279                         select_duck(iter->second);
 280                 else
 281                         unselect_duck(iter->second);
 282 }
 283
 284 void
 285 Duckmatic::unselect_all_ducks()
 286 {
 287         DuckMap::const_iterator iter;
 288         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 289                 unselect_duck(iter->second);
 290 }
 291
 292 void
 293 Duckmatic::toggle_select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 294 {
 295         Vector vmin, vmax;
 296         vmin[0]=std::min(tl[0],br[0]);
 297         vmin[1]=std::min(tl[1],br[1]);
 298         vmax[0]=std::max(tl[0],br[0]);
 299         vmax[1]=std::max(tl[1],br[1]);
 300
 301         DuckMap::const_iterator iter;
 302         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 303         {
 304                 Point p(iter->second->get_trans_point());
 305                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1] &&
 306                    is_duck_group_selectable(iter->second))
 307                         toggle_select_duck(iter->second);
 308         }
 309 }
 310
 311 void
 312 Duckmatic::select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 313 {
 314         Vector vmin, vmax;
 315         vmin[0]=std::min(tl[0],br[0]);
 316         vmin[1]=std::min(tl[1],br[1]);
 317         vmax[0]=std::max(tl[0],br[0]);
 318         vmax[1]=std::max(tl[1],br[1]);
 319
 320 //      Type type(get_type_mask());
 321
 322         DuckMap::const_iterator iter;
 323         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 324         {
 325                 Point p(iter->second->get_trans_point());
 326                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1])
 327                 {
 328                         if(is_duck_group_selectable(iter->second))
 329                                 select_duck(iter->second);
 330                 }
 331         }
 332 }
 333
 334 int
 335 Duckmatic::count_selected_ducks()const
 336 {
 337         return selected_ducks.size();
 338 }
 339
 340 void
 341 Duckmatic::select_duck(const etl::handle<Duck> &duck)
 342 {
 343         if(duck)
 344         {
 345                 selected_ducks.insert(duck->get_guid());
 346                 signal_duck_selection_changed_();
 347         }
 348 }
 349
 350 DuckList
 351 Duckmatic::get_selected_ducks()const
 352 {
 353         DuckList ret;
 354         GUIDSet::const_iterator iter;
 355         const Type type(get_type_mask());
 356
 357         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 358         {
 359                 const DuckMap::const_iterator d_iter(duck_map.find(*iter));
 360
 361                 if(d_iter==duck_map.end())
 362                         continue;
 363
 364                 if(( d_iter->second->get_type() && (!(type & d_iter->second->get_type())) ) )
 365                         continue;
 366
 367                 ret.push_back(d_iter->second);
 368         }
 369         return ret;
 370 }
 371
 372 DuckList
 373 Duckmatic::get_duck_list()const
 374 {
 375         DuckList ret;
 376         DuckMap::const_iterator iter;
 377         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 378                 ret.push_back(iter->second);
 379         return ret;
 380 }
 381
 382 void
 383 Duckmatic::unselect_duck(const etl::handle<Duck> &duck)
 384 {
 385         if(duck && selected_ducks.count(duck->get_guid()))
 386         {
 387                 selected_ducks.erase(duck->get_guid());
 388                 signal_duck_selection_changed_();
 389         }
 390 }
 391
 392 void
 393 Duckmatic::toggle_select_duck(const etl::handle<Duck> &duck)
 394 {
 395         if(duck_is_selected(duck))
 396                 unselect_duck(duck);
 397         else
 398                 select_duck(duck);
 399 }
 400
 401 void
 402 Duckmatic::translate_selected_ducks(const synfig::Vector& vector)
 403 {
 404         if(duck_dragger_)
 405                 duck_dragger_->duck_drag(this,vector);
 406 }
 407
 408 void
 409 Duckmatic::start_duck_drag(const synfig::Vector& offset)
 410 {
 411         if(duck_dragger_)
 412                 duck_dragger_->begin_duck_drag(this,offset);
 413
 414         //drag_offset_=offset;
 415         drag_offset_=find_duck(offset)->get_trans_point();
 416 }
 417
 418 bool
 419 Duckmatic::end_duck_drag()
 420 {
 421         if(duck_dragger_)
 422                 return duck_dragger_->end_duck_drag(this);
 423         return false;
 424 }
 425
 426 Point
 427 Duckmatic::snap_point_to_grid(const synfig::Point& x, float radius)const
 428 {
 429         Point ret(x);
 430
 431         GuideList::const_iterator guide_x,guide_y;
 432         bool has_guide_x(false), has_guide_y(false);
 433
 434         guide_x=find_guide_x(ret,radius);
 435         if(guide_x!=guide_list_x_.end())
 436                 has_guide_x=true;
 437
 438         guide_y=find_guide_y(ret,radius);
 439         if(guide_y!=guide_list_y_.end())
 440                 has_guide_y=true;
 441
 442         if(get_grid_snap())
 443         {
 444                 Point snap(
 445                         floor(ret[0]/get_grid_size()[0]+0.5)*get_grid_size()[0],
 446                         floor(ret[1]/get_grid_size()[1]+0.5)*get_grid_size()[1]);
 447
 448                 if(abs(snap[0]-ret[0])<=radius && (!has_guide_x || abs(snap[0]-ret[0])<=abs(*guide_x-ret[0])))
 449                         ret[0]=snap[0],has_guide_x=false;
 450                 if(abs(snap[1]-ret[1])<=radius && (!has_guide_y || abs(snap[1]-ret[1])<=abs(*guide_y-ret[1])))
 451                         ret[1]=snap[1],has_guide_y=false;
 452         }
 453
 454         if(guide_snap)
 455         {
 456                 if(has_guide_x)
 457                         ret[0]=*guide_x;
 458                 if(has_guide_y)
 459                         ret[1]=*guide_y;
 460         }
 461
 462         if(axis_lock)
 463         {
 464                 ret-=drag_offset_;
 465                 if(abs(ret[0])<abs(ret[1]))
 466                         ret[0]=0;
 467                 else
 468                         ret[1]=0;
 469                 ret+=drag_offset_;
 470         }
 471
 472         return ret;
 473 }
 474
 475 void
 476 DuckDrag_Translate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 477 {
 478         last_translate_=Vector(0,0);
 479         {
 480                 drag_offset_=duckmatic->find_duck(offset)->get_trans_point();
 481
 482                 snap=Vector(0,0);
 483         }
 484
 485         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 486         DuckList::const_iterator iter;
 487
 488         positions.clear();
 489         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 490         {
 491                 Point p((*iter)->get_trans_point());
 492                 positions.push_back(p);
 493         }
 494 }
 495
 496 bool
 497 DuckDrag_Translate::end_duck_drag(Duckmatic* duckmatic)
 498 {
 499         if(last_translate_.mag()>0.0001)
 500         {
 501                 duckmatic->signal_edited_selected_ducks();
 502                 return true;
 503         }
 504         else
 505         {
 506                 duckmatic->signal_user_click_selected_ducks(0);
 507                 return false;
 508         }
 509 }
 510
 511 void
 512 DuckDrag_Translate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 513 {
 514         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 515         DuckList::const_iterator iter;
 516
 517         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-drag_offset_);
 518         int i;
 519         Time time(duckmatic->get_time());
 520
 521         // drag the vertex and position ducks first
 522         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 523         {
 524                 etl::handle<Duck> duck(*iter);
 525                 if(duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 526                 {
 527                         duck->set_trans_point(positions[i]+vect);
 528
 529                         if (ValueNode_BLineCalcVertex::Handle bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node()))
 530                         {
 531                                 synfig::Point closest_point = duck->get_point();
 532                                 synfig::Real radius = 0.0;
 533                                 ValueNode_BLine::Handle bline = ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link(bline_vertex->get_link_index_from_name("bline")));
 534                                 synfig::find_closest_point(
 535                                         (*bline)(time),
 536                                         duck->get_point(),
 537                                         radius,
 538                                         bline->get_loop(),
 539                                         &closest_point);
 540                                 duck->set_point(closest_point);
 541                         }
 542                 }
 543         }
 544
 545         // then drag the others
 546         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 547                 if ((*iter)->get_type() != Duck::TYPE_VERTEX && (*iter)->get_type() != Duck::TYPE_POSITION)
 548                         (*iter)->set_trans_point(positions[i]+vect);
 549
 550         // then patch up the tangents for the vertices we've moved
 551         DuckList duck_list(duckmatic->get_duck_list());
 552         for (iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter)
 553         {
 554                 etl::handle<Duck> duck(*iter);
 555                 if (duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 556                 {
 557                         ValueNode_BLineCalcVertex::Handle bline_vertex(ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node()));
 558                         if (bline_vertex)
 559                         {
 560                                 synfig::Real radius = 0.0;
 561                                 ValueNode_BLine::Handle bline(ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link(bline_vertex->get_link_index_from_name("bline"))));
 562                                 Real amount = synfig::find_closest_point((*bline)(time), duck->get_point(), radius, bline->get_loop());
 563
 564                                 int vertex_amount_index(bline_vertex->get_link_index_from_name("amount"));
 565                                 ValueNode::Handle vertex_amount_value_node(bline_vertex->get_link(vertex_amount_index));
 566
 567                                 DuckList::iterator iter;
 568                                 for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 569                                 {
 570                                         ValueNode::Handle duck_value_node((*iter)->get_value_desc().get_value_node());
 571                                         if (ValueNode_BLineCalcTangent::Handle bline_tangent = ValueNode_BLineCalcTangent::Handle::cast_dynamic(duck_value_node))
 572                                         {
 573                                                 if (bline_tangent->get_link(bline_tangent->get_link_index_from_name("amount")) == vertex_amount_value_node)
 574                                                 {
 575                                                         switch (bline_tangent->get_type())
 576                                                         {
 577                                                         case ValueBase::TYPE_ANGLE:
 578                                                         {
 579                                                                 Angle angle((*bline_tangent)(time, amount).get(Angle()));
 580                                                                 (*iter)->set_point(Point(Angle::cos(angle).get(), Angle::sin(angle).get()));
 581                                                                 break;
 582                                                         }
 583                                                         case ValueBase::TYPE_REAL:
 584                                                                 (*iter)->set_point(Point((*bline_tangent)(time, amount).get(Real()), 0));
 585                                                                 break;
 586                                                         case ValueBase::TYPE_VECTOR:
 587                                                                 (*iter)->set_point((*bline_tangent)(time, amount).get(Vector()));
 588                                                                 break;
 589                                                         default:
 590                                                                 break;
 591                                                         }
 592                                                 }
 593                                         }
 594                                         else if (ValueNode_BLineCalcWidth::Handle bline_width = ValueNode_BLineCalcWidth::Handle::cast_dynamic(duck_value_node))
 595                                         {
 596                                                 if (bline_width->get_link(bline_width->get_link_index_from_name("amount")) == vertex_amount_value_node)
 597                                                         (*iter)->set_point(Point((*bline_width)(time, amount).get(Real()), 0));
 598                                         }
 599                                 }
 600                         }
 601                 }
 602         }
 603
 604         last_translate_=vect;
 605 }
 606
 607 void
 608 Duckmatic::signal_edited_selected_ducks()
 609 {
 610         const DuckList ducks(get_selected_ducks());
 611         DuckList::const_iterator iter;
 612
 613         synfig::GUIDSet old_set(selected_ducks);
 614
 615         // If we have more than 20 things to move, then display
 616         // something to explain that it may take a moment
 617         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 618
 619         // Go ahead and call everyone's signals
 620         for(iter=ducks.begin();iter!=ducks.end();++iter)
 621         {
 622                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 623                 {
 624                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 625                         {
 626                                 selected_ducks=old_set;
 627                                 throw String("Bad edit");
 628                         }
 629                 }
 630                 else if (App::restrict_radius_ducks &&
 631                                  (*iter)->is_radius())
 632                 {
 633                         Point point((*iter)->get_point());
 634                         bool changed = false;
 635
 636                         if (point[0] < 0)
 637                         {
 638                                 point[0] = 0;
 639                                 changed = true;
 640                         }
 641                         if (point[1] < 0)
 642                         {
 643                                 point[1] = 0;
 644                                 changed = true;
 645                         }
 646
 647                         if (changed) (*iter)->set_point(point);
 648
 649                         if(!(*iter)->signal_edited()(point))
 650                         {
 651                                 selected_ducks=old_set;
 652                                 throw String("Bad edit");
 653                         }
 654                 }
 655                 else
 656                 {
 657                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 658                         {
 659                                 selected_ducks=old_set;
 660                                 throw String("Bad edit");
 661                         }
 662                 }
 663         }
 664         selected_ducks=old_set;
 665 }
 666
 667 void
 668 Duckmatic::signal_user_click_selected_ducks(int button)
 669 {
 670         const DuckList ducks(get_selected_ducks());
 671         DuckList::const_iterator iter;
 672
 673         for(iter=ducks.begin();iter!=ducks.end();++iter)
 674         {
 675                 (*iter)->signal_user_click(button)();
 676         }
 677 }
 678
 679 void
 680 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 681 {
 682         //if(!duck_map.count(duck->get_guid()))
 683         {
 684                 if(duck_data_share_map.count(duck->get_data_guid()))
 685                 {
 686                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 687                 }
 688                 else
 689                 {
 690                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 691                         duck->set_shared_point(point);
 692                         duck_data_share_map[duck->get_data_guid()]=point;
 693                 }
 694
 695                 duck_map.insert(duck);
 696         }
 697
 698         last_duck_guid=duck->get_guid();
 699 }
 700
 701 void
 702 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 703 {
 704         bezier_list_.push_back(bezier);
 705 }
 706
 707 void
 708 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 709 {
 710         assert(stroke_point_list);
 711
 712         std::list<etl::handle<Stroke> >::iterator iter;
 713
 714         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 715         {
 716                 if((*iter)->stroke_data==stroke_point_list)
 717                         return;
 718         }
 719
 720         etl::handle<Stroke> stroke(new Stroke());
 721
 722         stroke->stroke_data=stroke_point_list;
 723         stroke->color=color;
 724
 725         stroke_list_.push_back(stroke);
 726 }
 727
 728 void
 729 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 730 {
 731         add_stroke(stroke_point_list,color);
 732         persistent_stroke_list_.push_back(stroke_list_.back());
 733 }
 734
 735 void
 736 Duckmatic::clear_persistent_strokes()
 737 {
 738         persistent_stroke_list_.clear();
 739 }
 740
 741 void
 742 Duckmatic::set_show_persistent_strokes(bool x)
 743 {
 744         if(x!=show_persistent_strokes)
 745         {
 746                 show_persistent_strokes=x;
 747                 if(x)
 748                         stroke_list_=persistent_stroke_list_;
 749                 else
 750                         stroke_list_.clear();
 751         }
 752 }
 753
 754 void
 755 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 756 {
 757         duck_map.erase(duck->get_guid());
 758 }
 759
 760 etl::handle<Duckmatic::Duck>
 761 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 762 {
 763         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 764         if(iter!=duck_map.end())
 765                 return iter->second;
 766         return 0;
 767
 768 /*      std::list<handle<Duck> >::reverse_iterator iter;
 769
 770         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 771         {
 772                 if(*iter!=duck && **iter==*duck)
 773                 {
 774                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 775                         return *iter;
 776                 }
 777         }
 778         return 0;
 779 */
 780 }
 781
 782 etl::handle<Duckmatic::Duck>
 783 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 784 {
 785         etl::handle<Duck> similar(find_similar_duck(duck));
 786         if(!similar)
 787         {
 788                 add_duck(duck);
 789                 return duck;
 790         }
 791         return similar;
 792 }
 793
 794 void
 795 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 796 {
 797         std::list<handle<Bezier> >::iterator iter;
 798
 799         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 800         {
 801                 if(*iter==bezier)
 802                 {
 803                         bezier_list_.erase(iter);
 804                         return;
 805                 }
 806         }
 807         synfig::warning("Unable to find bezier to erase!");
 808 }
 809
 810 etl::handle<Duckmatic::Duck>
 811 Duckmatic::last_duck()const
 812 {
 813         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 814         if(iter!=duck_map.end())
 815                 return iter->second;
 816         return 0;
 817 }
 818
 819 etl::handle<Duckmatic::Bezier>
 820 Duckmatic::last_bezier()const
 821 {
 822         return bezier_list_.back();
 823 }
 824
 825 etl::handle<Duckmatic::Duck>
 826 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 827 {
 828         if(radius==0)radius=10000000;
 829
 830         if(type==Duck::TYPE_DEFAULT)
 831                 type=get_type_mask();
 832
 833         Real closest(10000000);
 834         etl::handle<Duck> ret;
 835
 836         DuckMap::const_iterator iter;
 837
 838         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 839         {
 840                 const Duck::Handle& duck(iter->second);
 841
 842                 if(duck->get_ignore())
 843                         continue;
 844                 Real dist((duck->get_trans_point()-point).mag_squared());
 845
 846                 if(duck->get_type()&Duck::TYPE_VERTEX)
 847                         dist*=1.0001;
 848                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 849                         dist*=0.9999;
 850
 851                 if(dist<=closest && !( duck->get_type() && (!(type & duck->get_type())) ) )
 852                 {
 853                         {
 854                                 closest=dist;
 855                                 ret=duck;
 856                         }
 857                 }
 858         }
 859
 860         if(radius==0 || closest<radius*radius)
 861                 return ret;
 862
 863         return 0;
 864 }
 865
 866 etl::handle<Duckmatic::Bezier>
 867 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 868 {
 869         return find_bezier(point,radius,radius,location);
 870 }
 871
 872 etl::handle<Duckmatic::Bezier>
 873 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 874 {
 875         if(radius==0)radius=10000000;
 876         Real closest(10000000);
 877         etl::handle<Bezier> ret;
 878
 879         bezier<Point>   curve;
 880
 881         Real    d,step;
 882         float   time = 0;
 883         float   best_time = 0;
 884
 885         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 886         {
 887                 curve[0] = (*iter)->p1->get_trans_point();
 888                 curve[1] = (*iter)->c1->get_trans_point();
 889                 curve[2] = (*iter)->c2->get_trans_point();
 890                 curve[3] = (*iter)->p2->get_trans_point();
 891                 curve.sync();
 892
 893 #if 0
 894                 // I don't know why this doesn't work
 895                 time=curve.find_closest(pos,6);
 896                 d=((curve(time)-pos).mag_squared());
 897
 898 #else
 899                 //set the step size based on the size of the picture
 900                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 901
 902                 step = d/(2*scale); //want to make the distance between lines happy
 903
 904                 step = max(step,0.01); //100 samples should be plenty
 905                 step = min(step,0.1); //10 is minimum
 906
 907                 d = find_closest(curve,pos,step,&closest,&time);
 908 #endif
 909
 910                 if(d < closest)
 911                 {
 912                         closest = d;
 913                         ret = *iter;
 914                         best_time=time;
 915                 }
 916         }
 917
 918         if(closest < radius*radius)
 919         {
 920                 if(location)
 921                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 922
 923                 return ret;
 924         }
 925
 926         return 0;
 927 }
 928
 929 bool
 930 Duckmatic::save_sketch(const synfig::String& filename)const
 931 {
 932         ChangeLocale change_locale(LC_NUMERIC, "C");
 933         std::ofstream file(filename.c_str());
 934
 935         if(!file)return false;
 936
 937         file<<"SKETCH"<<endl;
 938
 939         std::list<etl::handle<Stroke> >::const_iterator iter;
 940
 941         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 942         {
 943                 file<<"C "
 944                         <<(*iter)->color.get_r()<<' '
 945                         <<(*iter)->color.get_g()<<' '
 946                         <<(*iter)->color.get_b()
 947                 <<endl;
 948                 std::list<synfig::Point>::const_iterator viter;
 949                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 950                 {
 951                         file<<"V "
 952                                 <<(*viter)[0]<<' '
 953                                 <<(*viter)[1]
 954                         <<endl;
 955                 }
 956         }
 957         if(!file)return false;
 958         sketch_filename_=filename;
 959         signal_sketch_saved_();
 960         return true;
 961 }
 962
 963 bool
 964 Duckmatic::load_sketch(const synfig::String& filename)
 965 {
 966         ChangeLocale change_locale(LC_NUMERIC, "C");
 967         std::ifstream file(filename.c_str());
 968
 969         if(!file)
 970                 return false;
 971
 972         std::string line;
 973         getline(file,line);
 974
 975         if(line!="SKETCH")
 976         {
 977                 synfig::error("Not a sketch");
 978                 return false;
 979         }
 980
 981         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 982
 983         while(file)
 984         {
 985                 getline(file,line);
 986
 987                 if(line.empty())
 988                         continue;
 989
 990                 switch(line[0])
 991                 {
 992                 case 'C':
 993                 case 'c':
 994                         {
 995                                 stroke_data.spawn();
 996                                 float r,g,b;
 997                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
 998                                 {
 999                                         synfig::warning("Bad color line \"%s\"",line.c_str());
1000                                         r=0;g=0;b=0;
1001                                 }
1002                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
1003                         }
1004                         break;
1005                 case 'V':
1006                 case 'v':
1007                         if(!stroke_data)
1008                         {
1009                                 stroke_data.spawn();
1010                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
1011                         }
1012                         float x,y;
1013                         if(!strscanf(line,"V %f %f",&x, &y))
1014                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
1015                         else
1016                                 stroke_data->push_back(synfig::Vector(x,y));
1017                         break;
1018                 default:
1019                         synfig::warning("Unexpected sketch token '%c'",line[0]);
1020                         break;
1021                 }
1022         }
1023
1024         sketch_filename_=filename;
1025         return true;
1026 }
1027
1028 Duckmatic::Push::Push(Duckmatic *duckmatic_):
1029         duckmatic_(duckmatic_)
1030 {
1031         duck_map=duckmatic_->duck_map;
1032         bezier_list_=duckmatic_->bezier_list_;
1033         duck_data_share_map=duckmatic_->duck_data_share_map;
1034         stroke_list_=duckmatic_->stroke_list_;
1035         duck_dragger_=duckmatic_->duck_dragger_;
1036         needs_restore=true;
1037 }
1038
1039 Duckmatic::Push::~Push()
1040 {
1041         if(needs_restore)
1042                 restore();
1043 }
1044
1045 void
1046 Duckmatic::Push::restore()
1047 {
1048         duckmatic_->duck_map=duck_map;
1049         duckmatic_->bezier_list_=bezier_list_;
1050         duckmatic_->duck_data_share_map=duck_data_share_map;
1051         duckmatic_->stroke_list_=stroke_list_;
1052         duckmatic_->duck_dragger_=duck_dragger_;
1053         needs_restore=false;
1054 }
1055
1056 inline String guid_string(const synfigapp::ValueDesc& x)
1057 {
1058         if(x.parent_is_layer_param())
1059                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1060         //if(x.is_value_node())
1061                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1062 }
1063
1064 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1065 {
1066         synfig::GUID ret(0);
1067
1068         if(x.parent_is_layer_param())
1069         {
1070                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1071         }
1072         else
1073         {
1074                 ret=x.get_value_node()->get_guid();
1075         }
1076
1077         ret^=transform_stack.get_guid();
1078         return ret;
1079 }
1080
1081 /*
1082 Duck::Handle
1083 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)
1084 {
1085         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1086         etl::handle<Duck> duck=new Duck();
1087
1088         return duck;
1089 }
1090 */
1091
1092 bool
1093 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)
1094 {
1095         ValueBase::Type type=value_desc.get_value_type();
1096 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1097         switch(type)
1098         {
1099         case ValueBase::TYPE_REAL:
1100
1101                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1102                 {
1103                         etl::handle<Duck> duck=new Duck();
1104                         duck->set_transform_stack(transform_stack);
1105                         duck->set_radius(true);
1106                         duck->set_type(Duck::TYPE_RADIUS);
1107
1108                         // put the duck on the right hand side of the center
1109                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1110                         duck->set_name(guid_string(value_desc));
1111                         if(value_desc.is_value_node())
1112                         {
1113                                 // If the ValueNode can be directly manipulated,
1114                                 // then set it as so.
1115                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1116                         }
1117                         else
1118                         {
1119                                 duck->set_editable(true);
1120                         }
1121
1122                         if(param_desc && param_desc!=REAL_COOKIE)
1123                         {
1124                                 if(!param_desc->get_origin().empty())
1125                                 {
1126                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1127                                         /*
1128                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1129                                         */
1130                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1131                                         duck->set_origin(last_duck());
1132                                 }
1133                                 duck->set_scalar(param_desc->get_scalar());
1134                         }
1135
1136                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1137                         duck->signal_edited().connect(
1138                                 sigc::bind(
1139                                         sigc::mem_fun(
1140                                                 *canvas_view,
1141                                                 &studio::CanvasView::on_duck_changed),
1142                                         value_desc));
1143                         duck->set_value_desc(value_desc);
1144
1145                         duck->signal_user_click(2).connect(
1146                                 sigc::bind(
1147                                         sigc::bind(
1148                                                 sigc::bind(
1149                                                         sigc::mem_fun(
1150                                                                 *canvas_view,
1151                                                                 &studio::CanvasView::popup_param_menu),
1152                                                         false),
1153                                                 0.0f),
1154                                         value_desc));
1155
1156                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1157
1158                         add_duck(duck);
1159
1160                         return true;
1161                 }
1162                 break;
1163
1164         case ValueBase::TYPE_ANGLE:
1165
1166                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1167                 {
1168                         etl::handle<Duck> duck=new Duck();
1169                         duck->set_type(Duck::TYPE_ANGLE);
1170                         duck->set_transform_stack(transform_stack);
1171                         synfig::Angle angle;
1172
1173                         angle=value_desc.get_value(get_time()).get(Angle());
1174                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1175                         duck->set_name(guid_string(value_desc));
1176                         if(value_desc.is_value_node())
1177                         {
1178                                 ValueNode::Handle value_node=value_desc.get_value_node();
1179                                 //duck->set_name(strprintf("%x",value_node.get()));
1180
1181                                 // If the ValueNode can be directly manipulated,
1182                                 // then set it as so.
1183                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1184                         }
1185                         else
1186                         {
1187                                 //angle=(value_desc.get_value().get(Angle()));
1188                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1189                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1190                                 duck->set_editable(true);
1191                         }
1192
1193                         if(param_desc && param_desc!=REAL_COOKIE)
1194                         {
1195                                 if(!param_desc->get_origin().empty())
1196                                 {
1197                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1198                                         /*
1199                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1200                                         */
1201                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1202                                         duck->set_origin(last_duck());
1203                                 }
1204                                 duck->set_scalar(param_desc->get_scalar());
1205                         }
1206
1207                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1208                         duck->signal_edited_angle().clear();
1209                         duck->signal_edited_angle().connect(
1210                                 sigc::bind(
1211                                         sigc::mem_fun(
1212                                                 *canvas_view,
1213                                                 &studio::CanvasView::on_duck_angle_changed),
1214                                         value_desc));
1215                         duck->set_value_desc(value_desc);
1216
1217                         duck->signal_user_click(2).connect(
1218                                 sigc::bind(
1219                                         sigc::bind(
1220                                                 sigc::bind(
1221                                                         sigc::mem_fun(
1222                                                                 *canvas_view,
1223                                                                 &studio::CanvasView::popup_param_menu),
1224                                                         false),
1225                                                 0.0f),
1226                                         value_desc));
1227                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1228
1229                         add_duck(duck);
1230
1231                         return true;
1232                 }
1233                 break;
1234
1235         case ValueBase::TYPE_VECTOR:
1236                 {
1237                         etl::handle<Duck> duck=new Duck();
1238                         duck->set_transform_stack(transform_stack);
1239
1240                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1241                         duck->set_name(guid_string(value_desc));
1242                         if(value_desc.is_value_node())
1243                         {
1244                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1245
1246                                 // If the ValueNode can be directly manipulated,
1247                                 // then set it as so.
1248                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1249                         }
1250                         else
1251                         {
1252                                 //duck->set_point(value_desc.get_value().get(Point()));
1253                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1254                                 duck->set_editable(true);
1255                         }
1256
1257                         // If we were passed a parameter description
1258                         if(param_desc)
1259                         {
1260                                 if(!param_desc->get_connect().empty())
1261                                 {
1262                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1263                                         Duck::Handle connect_duck;
1264                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1265                                         {
1266                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1267                                         }
1268                                         else
1269                                         {
1270                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1271                                                 connect_duck=last_duck();
1272                                         }
1273                                         duck->set_connect_duck(connect_duck);
1274                                 }
1275                                 if(!param_desc->get_box().empty())
1276                                 {
1277                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1278                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1279                                         duck->set_box_duck(last_duck());
1280                                 }
1281
1282                                 // If we have an origin
1283                                 if(!param_desc->get_origin().empty())
1284                                 {
1285                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1286                                         /*
1287                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1288                                         */
1289                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1290                                         duck->set_origin(last_duck());
1291                                         duck->set_type(Duck::TYPE_VERTEX);
1292                                 }
1293                                 else
1294                                         duck->set_type(Duck::TYPE_POSITION);
1295
1296                                 duck->set_scalar(param_desc->get_scalar());
1297                         }
1298                         else
1299                                 duck->set_type(Duck::TYPE_POSITION);
1300
1301                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1302                         duck->signal_edited().connect(
1303                                 sigc::bind(
1304                                         sigc::mem_fun(
1305                                                 *canvas_view,
1306                                                 &studio::CanvasView::on_duck_changed),
1307                                         value_desc));
1308                         duck->set_value_desc(value_desc);
1309
1310                         duck->signal_user_click(2).connect(
1311                                 sigc::bind(
1312                                         sigc::bind(
1313                                                 sigc::bind(
1314                                                         sigc::mem_fun(
1315                                                                 *canvas_view,
1316                                                                 &studio::CanvasView::popup_param_menu),
1317                                                         false),
1318                                                 1.0f),
1319                                         value_desc));
1320                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1321                         add_duck(duck);
1322
1323                         return true;
1324                 }
1325                 break;
1326         case ValueBase::TYPE_SEGMENT:
1327                 {
1328                         etl::handle<Bezier> bezier(new Bezier());
1329                         ValueNode_Composite::Handle value_node;
1330
1331                         if(value_desc.is_value_node() &&
1332                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1333                         {
1334                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1335                                         return false;
1336                                 bezier->p1=last_duck();
1337                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1338                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1339                                         return false;
1340                                 bezier->c1=last_duck();
1341                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1342                                 bezier->c1->set_origin(bezier->p1);
1343                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1344                                 bezier->c1->set_tangent(true);
1345
1346                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1347                                         return false;
1348                                 bezier->p2=last_duck();
1349                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1350                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1351                                         return false;
1352                                 bezier->c2=last_duck();
1353                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1354                                 bezier->c2->set_origin(bezier->p2);
1355                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1356                                 bezier->c2->set_tangent(true);
1357
1358                                 bezier->signal_user_click(2).connect(
1359                                         sigc::bind(
1360                                                 sigc::mem_fun(
1361                                                         *canvas_view,
1362                                                         &studio::CanvasView::popup_param_menu_bezier),
1363                                                 value_desc));
1364
1365                                 add_bezier(bezier);
1366                         }
1367                         else if(value_desc.get_value().is_valid())
1368                         {
1369                                 Segment segment=value_desc.get_value();
1370                                 etl::handle<Duck> duck_p,duck_c;
1371                                 synfig::String name;
1372                                 if(param_desc)
1373                                 {
1374                                         name=param_desc->get_local_name();
1375                                 }
1376                                 else
1377                                 {
1378                                         name=guid_string(value_desc);
1379                                 }
1380
1381                                 duck_p=new Duck(segment.p1);
1382                                 duck_p->set_name(name+".P1");
1383                                 duck_p->set_type(Duck::TYPE_VERTEX);
1384                                 add_duck(duck_p);
1385
1386                                 duck_c=new Duck(segment.t1);
1387                                 duck_c->set_name(name+".T1");
1388                                 duck_c->set_type(Duck::TYPE_TANGENT);
1389                                 add_duck(duck_c);
1390                                 duck_c->set_origin(duck_p);
1391                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1392                                 duck_c->set_tangent(true);
1393
1394                                 bezier->p1=duck_p;
1395                                 bezier->c1=duck_c;
1396
1397                                 duck_p=new Duck(segment.p2);
1398                                 duck_p->set_name(name+".P2");
1399                                 duck_p->set_type(Duck::TYPE_VERTEX);
1400                                 add_duck(duck_p);
1401
1402                                 duck_c=new Duck(segment.t2);
1403                                 duck_c->set_type(Duck::TYPE_TANGENT);
1404                                 duck_c->set_name(name+".T2");
1405                                 add_duck(duck_c);
1406                                 duck_c->set_origin(duck_p);
1407                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1408                                 duck_c->set_tangent(true);
1409
1410                                 bezier->p2=duck_p;
1411                                 bezier->c2=duck_c;
1412                                 add_bezier(bezier);
1413                         }
1414
1415                         return true;
1416                 }
1417                 break;
1418         case ValueBase::TYPE_BLINEPOINT:
1419         {
1420
1421                 if(value_desc.is_value_node() &&
1422                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1423                 {
1424                         ValueNode_Composite::Handle value_node;
1425                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1426
1427                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1428                                 return false;
1429                         etl::handle<Duck> vertex_duck(last_duck());
1430                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1431                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1432                                 return false;
1433                         etl::handle<Duck> t1_duck(last_duck());
1434
1435                         t1_duck->set_origin(vertex_duck);
1436                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1437                         t1_duck->set_tangent(true);
1438
1439                         etl::handle<Duck> t2_duck;
1440
1441                         // If the tangents are split
1442                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1443                         {
1444                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1445                                         return false;
1446                                 t2_duck=last_duck();
1447                                 t2_duck->set_origin(vertex_duck);
1448                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1449                                 t2_duck->set_tangent(true);
1450                         }
1451                         else
1452                         {
1453                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1454                                         return false;
1455                                 t2_duck=last_duck();
1456                                 t2_duck->set_origin(vertex_duck);
1457                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1458                                 t2_duck->set_tangent(true);
1459                         }
1460                         return true;
1461                 }
1462
1463         }
1464         break;
1465         case ValueBase::TYPE_LIST:
1466         {
1467                 // Check for BLine
1468                 if (value_desc.is_value_node() &&
1469                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1470                 {
1471                         ValueNode_BLine::Handle value_node;
1472                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1473
1474                         int i,first=-1;
1475
1476                         etl::handle<Bezier> bezier;
1477                         etl::handle<Duck> first_duck;
1478                         etl::handle<Duck> duck, tduck;
1479
1480                         for (i = 0; i < value_node->link_count(); i++)
1481                         {
1482                                 float amount(value_node->list[i].amount_at_time(get_time()));
1483
1484                                 // skip vertices that aren't fully on
1485                                 if (amount < 0.9999f)
1486                                         continue;
1487
1488                                 // remember the index of the first vertex we didn't skip
1489                                 if (first == -1)
1490                                         first = i;
1491
1492                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1493
1494                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1495                                 ValueNode_Composite::Handle composite_vertex_value_node(
1496                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1497
1498                                 // add the vertex duck - it's a composite
1499                                 if(composite_vertex_value_node)
1500                                 {
1501                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1502                                         {
1503                                                 duck=last_duck();
1504                                                 if(i==first)
1505                                                         first_duck=duck;
1506                                                 duck->set_type(Duck::TYPE_VERTEX);
1507
1508                                                 duck->signal_user_click(2).clear();
1509                                                 duck->signal_user_click(2).connect(
1510                                                         sigc::bind(
1511                                                                 sigc::bind(
1512                                                                         sigc::bind(
1513                                                                                 sigc::mem_fun(
1514                                                                                         *canvas_view,
1515                                                                                         &studio::CanvasView::popup_param_menu),
1516                                                                                 false),
1517                                                                         1.0f),
1518                                                                 synfigapp::ValueDesc(value_node,i)));
1519
1520                                                 if(param_desc)
1521                                                 {
1522                                                         if(!param_desc->get_origin().empty())
1523                                                         {
1524                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1525                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1526                                                                 duck->set_origin(last_duck());
1527 /*
1528                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1529                                                                 if(value.same_type_as(synfig::Point()))
1530                                                                         duck->set_origin(value.get(synfig::Point()));
1531 */
1532                                                         }
1533                                                 }
1534                                         }
1535                                         else
1536                                                 return false;
1537                                 }
1538                                 // else it's not a composite
1539                                 else
1540                                 {
1541                                         duck=new Duck(bline_point.get_vertex());
1542                                         if(i==first)
1543                                                 first_duck=duck;
1544                                         duck->set_transform_stack(transform_stack);
1545                                         duck->set_editable(false);
1546                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1547                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1548
1549                                         duck->set_type(Duck::TYPE_VERTEX);
1550                                         if(param_desc)
1551                                         {
1552                                                 if(!param_desc->get_origin().empty())
1553                                                 {
1554                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1555                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1556                                                                 duck->set_origin(last_duck());
1557 /*
1558                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1559                                                                 if(value.same_type_as(synfig::Point()))
1560                                                                         duck->set_origin(value.get(synfig::Point()));
1561 */
1562                                                 }
1563                                         }
1564                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1565                                         duck=add_similar_duck(duck);
1566 //                                      add_duck(duck);
1567                                 }
1568
1569                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1570                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1571                                         !param_desc)
1572                                 {
1573                                         etl::handle<Duck> width;
1574                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1575                                         {
1576                                                 width=last_duck();
1577                                                 width->set_origin(duck);
1578                                                 width->set_type(Duck::TYPE_WIDTH);
1579                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1580
1581                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1582                                                 if (param_desc)
1583                                                 {
1584                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1585                                                         if(value.same_type_as(synfig::Real()))
1586                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1587                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1588                                                         else
1589                                                                 width->set_scalar(0.5f);
1590                                                 }
1591                                                 // otherwise just present the raw unscaled width
1592                                                 else
1593                                                         width->set_scalar(0.5f);
1594                                         }
1595                                         else
1596                                                 synfig::error("Unable to add width duck!");
1597                                 }
1598
1599                                 // each bezier uses t2 of one point and t1 of the next
1600                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1601                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1602                                 if(bezier)
1603                                 {
1604                                         // Add the tangent1 duck
1605                                         if(composite_vertex_value_node)
1606                                         {
1607                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1608                                                         return false;
1609                                                 tduck=last_duck();
1610                                         }
1611                                         else
1612                                         {
1613                                                 tduck=new Duck(bline_point.get_tangent1());
1614                                                 tduck->set_transform_stack(transform_stack);
1615                                                 tduck->set_editable(false);
1616                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1617 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1618                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1619                                                 tduck=add_similar_duck(tduck);
1620 //                                              add_duck(duck);
1621                                         }
1622
1623                                         tduck->set_origin(duck);
1624                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1625                                         tduck->set_tangent(true);
1626
1627                                         bezier->p2=duck;
1628                                         bezier->c2=tduck;
1629
1630                                         bezier->signal_user_click(2).connect(
1631                                                 sigc::bind(
1632                                                         sigc::mem_fun(
1633                                                                 *canvas_view,
1634                                                                 &studio::CanvasView::popup_param_menu_bezier),
1635                                                         synfigapp::ValueDesc(value_node,i)));
1636
1637                                         duck->signal_user_click(2).clear();
1638                                         duck->signal_user_click(2).connect(
1639                                                 sigc::bind(
1640                                                         sigc::bind(
1641                                                                 sigc::bind(
1642                                                                         sigc::mem_fun(
1643                                                                                 *canvas_view,
1644                                                                                 &studio::CanvasView::popup_param_menu),
1645                                                                         false),
1646                                                                 1.0f),
1647                                                         synfigapp::ValueDesc(value_node,i)));
1648
1649                                         add_bezier(bezier);
1650                                         bezier=0;
1651                                 }
1652
1653                                 // don't start a new bezier for the last point in the line if we're not looped
1654                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1655                                         continue;
1656
1657                                 bezier=new Bezier();
1658
1659                                 // Add the tangent2 duck
1660                                 if(composite_vertex_value_node)
1661                                 {
1662                                         int i=bline_point.get_split_tangent_flag()?5:4;
1663                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1664                                                 return false;
1665                                         tduck=last_duck();
1666                                 }
1667                                 else
1668                                 {
1669                                         if(bline_point.get_split_tangent_flag())
1670                                                 tduck=new Duck(bline_point.get_tangent2());
1671                                         else
1672                                                 tduck=new Duck(bline_point.get_tangent1());
1673
1674                                         tduck->set_transform_stack(transform_stack);
1675                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1676                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1677                                         tduck->set_editable(false);
1678                                         tduck=add_similar_duck(tduck);
1679 //                                      add_duck(duck);
1680                                         if(param_desc)
1681                                         {
1682                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1683                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1684                                                                 duck->set_origin(last_duck());
1685 /*
1686                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1687                                                                 if(value.same_type_as(synfig::Point()))
1688                                                                         duck->set_origin(value.get(synfig::Point()));
1689 */
1690 //                                              if(!param_desc->get_origin().empty())
1691 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1692                                         }
1693                                         duck->signal_user_click(2).clear();
1694                                         duck->signal_user_click(2).connect(
1695                                                 sigc::bind(
1696                                                         sigc::bind(
1697                                                                 sigc::bind(
1698                                                                         sigc::mem_fun(
1699                                                                                 *canvas_view,
1700                                                                                 &studio::CanvasView::popup_param_menu),
1701                                                                         false),
1702                                                                 1.0f),
1703                                                         synfigapp::ValueDesc(value_node,i)));
1704
1705                                 }
1706
1707                                 tduck->set_origin(duck);
1708                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1709                                 tduck->set_tangent(true);
1710
1711                                 bezier->p1=duck;
1712                                 bezier->c1=tduck;
1713                         }
1714
1715                         // Loop if necessary
1716                         if(bezier && value_node->get_loop())
1717                         {
1718                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1719
1720                                 ValueNode_Composite::Handle composite_vertex_value_node(
1721                                         ValueNode_Composite::Handle::cast_dynamic(
1722                                                 value_node->get_link(first)));
1723
1724                                 // Add the vertex duck
1725                                 duck=first_duck;
1726
1727                                 // Add the tangent1 duck
1728                                 if(composite_vertex_value_node)
1729                                 {
1730                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1731                                                 return false;
1732                                         tduck=last_duck();
1733                                 }
1734                                 else
1735                                 {
1736                                         tduck=new Duck(bline_point.get_tangent1());
1737                                         tduck->set_transform_stack(transform_stack);
1738                                         tduck->set_editable(false);
1739                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1740                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1741                                         tduck=add_similar_duck(tduck);
1742                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1743                                         //add_duck(duck);
1744                                 }
1745
1746                                 tduck->set_origin(duck);
1747                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1748                                 tduck->set_tangent(true);
1749
1750                                 bezier->p2=duck;
1751                                 bezier->c2=tduck;
1752
1753                                 bezier->signal_user_click(2).connect(
1754                                         sigc::bind(
1755                                                 sigc::mem_fun(
1756                                                         *canvas_view,
1757                                                         &studio::CanvasView::popup_param_menu_bezier),
1758                                                 synfigapp::ValueDesc(value_node,first)));
1759
1760                                 duck->signal_user_click(2).clear();
1761                                 duck->signal_user_click(2).connect(
1762                                         sigc::bind(
1763                                                 sigc::bind(
1764                                                         sigc::bind(
1765                                                                 sigc::mem_fun(
1766                                                                         *canvas_view,
1767                                                                         &studio::CanvasView::popup_param_menu),
1768                                                                 false),
1769                                                         1.0f),
1770                                                 synfigapp::ValueDesc(value_node,first)));
1771
1772                                 add_bezier(bezier);
1773                                 bezier=0;
1774                         }
1775                         return true;
1776                 }
1777                 else // Check for DynamicList
1778                 if(value_desc.is_value_node() &&
1779                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1780                 {
1781                         ValueNode_DynamicList::Handle value_node;
1782                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1783                         int i;
1784
1785                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1786                         {
1787                                 Bezier bezier;
1788                                 etl::handle<Duck> first_duck, duck;
1789                                 int first = -1;
1790                                 for(i=0;i<value_node->link_count();i++)
1791                                 {
1792                                         if(!value_node->list[i].status_at_time(get_time()))
1793                                                 continue;
1794                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1795                                                 return false;
1796                                         duck = last_duck();
1797
1798                                         // remember the index of the first vertex we didn't skip
1799                                         if (first == -1)
1800                                         {
1801                                                 first = i;
1802                                                 first_duck = duck;
1803                                         }
1804
1805                                         if(param_desc)
1806                                         {
1807                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1808                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1809                                                                 duck->set_origin(last_duck());
1810 /*
1811                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1812                                                                 if(value.same_type_as(synfig::Point()))
1813                                                                         duck->set_origin(value.get(synfig::Point()));
1814 */
1815 //                                              if(!param_desc->get_origin().empty())
1816 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1817                                         }
1818                                         duck->set_type(Duck::TYPE_VERTEX);
1819                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1820                                         bezier.p2=bezier.c2=duck;
1821
1822                                         if (first != i)
1823                                         {
1824                                                 handle<Bezier> bezier_(new Bezier());
1825                                                 bezier_->p1=bezier.p1;
1826                                                 bezier_->c1=bezier.c1;
1827                                                 bezier_->p2=bezier.p2;
1828                                                 bezier_->c2=bezier.c2;
1829                                                 add_bezier(bezier_);
1830                                                 last_bezier()->signal_user_click(2).connect(
1831                                                         sigc::bind(
1832                                                                 sigc::mem_fun(
1833                                                                         *canvas_view,
1834                                                                         &studio::CanvasView::popup_param_menu_bezier),
1835                                                                 synfigapp::ValueDesc(value_node,i)));
1836                                         }
1837                                 }
1838
1839                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1840                                 {
1841                                         duck = first_duck;
1842
1843                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1844                                         bezier.p2=bezier.c2=duck;
1845
1846                                         handle<Bezier> bezier_(new Bezier());
1847                                         bezier_->p1=bezier.p1;
1848                                         bezier_->c1=bezier.c1;
1849                                         bezier_->p2=bezier.p2;
1850                                         bezier_->c2=bezier.c2;
1851                                         add_bezier(bezier_);
1852                                         last_bezier()->signal_user_click(2).connect(
1853                                                 sigc::bind(
1854                                                         sigc::mem_fun(
1855                                                                 *canvas_view,
1856                                                                 &studio::CanvasView::popup_param_menu_bezier),
1857                                                         synfigapp::ValueDesc(value_node,first)));
1858                                 }
1859                         }
1860                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1861                         {
1862                                 for(i=0;i<value_node->link_count();i++)
1863                                 {
1864                                         if(!value_node->list[i].status_at_time(get_time()))
1865                                                 continue;
1866                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1867                                                 return false;
1868                                 }
1869                         }
1870                         else
1871                                 return false;
1872                 }
1873                 else
1874                 {
1875                         // WRITEME
1876                 }
1877
1878                 return true;
1879         }
1880
1881         break;
1882         default:
1883                 break;
1884         }
1885         return false;
1886 }