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