synfig-studio/src/gtkmm/duckmatic.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file duckmatic.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  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         synfigapp::ValueDesc value_desc(x->get_value_desc());
 258         if(value_desc.parent_is_layer_param() && type & Duck::TYPE_POSITION)
 259         {
 260                 Layer::Handle layer(value_desc.get_layer());
 261                 String layer_name(layer->get_name());
 262
 263                 if (layer_name == "outline" || layer_name == "region" || layer_name == "plant" ||
 264                         layer_name == "polygon" || layer_name == "curve_gradient")
 265                         return false;
 266
 267                 if((layer_name=="PasteCanvas"|| layer_name=="paste_canvas") &&
 268                    !layer->get_param("children_lock").get(bool()))
 269                         return false;
 270         }
 271         else if (value_desc.parent_is_value_node())
 272         {
 273                 if (ValueNode_BLineCalcVertex::Handle::cast_dynamic(value_desc.get_value_node()))
 274                         return false;
 275                 if (value_desc.parent_is_linkable_value_node())
 276                 {
 277                         LinkableValueNode::Handle parent_value_node(value_desc.get_parent_value_node());
 278                         if (ValueNode_Composite::Handle::cast_dynamic(parent_value_node))
 279                         {
 280                                 if (parent_value_node->get_type() == ValueBase::TYPE_BLINEPOINT &&
 281                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(
 282                                                 parent_value_node->get_link("point")))
 283                                         return false;
 284                         }
 285                         else if (ValueNode_BLine::Handle::cast_dynamic(parent_value_node))
 286                         {
 287                                 ValueNode_Composite::Handle composite(ValueNode_Composite::Handle::cast_dynamic(
 288                                                                                                                   value_desc.get_value_node()));
 289                                 if (composite &&
 290                                         ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))
 291                                         return false;
 292                         }
 293                 }
 294         }
 295         return true;
 296 }
 297
 298 void
 299 Duckmatic::select_all_ducks()
 300 {
 301         DuckMap::const_iterator iter;
 302         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 303                 if(is_duck_group_selectable(iter->second))
 304                         select_duck(iter->second);
 305                 else
 306                         unselect_duck(iter->second);
 307 }
 308
 309 void
 310 Duckmatic::unselect_all_ducks()
 311 {
 312         DuckMap::const_iterator iter;
 313         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 314                 unselect_duck(iter->second);
 315 }
 316
 317 void
 318 Duckmatic::toggle_select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 319 {
 320         Vector vmin, vmax;
 321         vmin[0]=std::min(tl[0],br[0]);
 322         vmin[1]=std::min(tl[1],br[1]);
 323         vmax[0]=std::max(tl[0],br[0]);
 324         vmax[1]=std::max(tl[1],br[1]);
 325
 326         DuckMap::const_iterator iter;
 327         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 328         {
 329                 Point p(iter->second->get_trans_point());
 330                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1] &&
 331                    is_duck_group_selectable(iter->second))
 332                         toggle_select_duck(iter->second);
 333         }
 334 }
 335
 336 void
 337 Duckmatic::select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 338 {
 339         Vector vmin, vmax;
 340         vmin[0]=std::min(tl[0],br[0]);
 341         vmin[1]=std::min(tl[1],br[1]);
 342         vmax[0]=std::max(tl[0],br[0]);
 343         vmax[1]=std::max(tl[1],br[1]);
 344
 345 //      Type type(get_type_mask());
 346
 347         DuckMap::const_iterator iter;
 348         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 349         {
 350                 Point p(iter->second->get_trans_point());
 351                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1])
 352                 {
 353                         if(is_duck_group_selectable(iter->second))
 354                                 select_duck(iter->second);
 355                 }
 356         }
 357 }
 358
 359 int
 360 Duckmatic::count_selected_ducks()const
 361 {
 362         return selected_ducks.size();
 363 }
 364
 365 void
 366 Duckmatic::select_duck(const etl::handle<Duck> &duck)
 367 {
 368         if(duck)
 369         {
 370                 selected_ducks.insert(duck->get_guid());
 371                 signal_duck_selection_changed_();
 372         }
 373 }
 374
 375 DuckList
 376 Duckmatic::get_selected_ducks()const
 377 {
 378         DuckList ret;
 379         GUIDSet::const_iterator iter;
 380         const Type type(get_type_mask());
 381
 382         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 383         {
 384                 const DuckMap::const_iterator d_iter(duck_map.find(*iter));
 385
 386                 if(d_iter==duck_map.end())
 387                         continue;
 388
 389                 if(( d_iter->second->get_type() && (!(type & d_iter->second->get_type())) ) )
 390                         continue;
 391
 392                 ret.push_back(d_iter->second);
 393         }
 394         return ret;
 395 }
 396
 397 DuckList
 398 Duckmatic::get_duck_list()const
 399 {
 400         DuckList ret;
 401         DuckMap::const_iterator iter;
 402         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_POSITION) ret.push_back(iter->second);
 403         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_VERTEX  ) ret.push_back(iter->second);
 404         for(iter=duck_map.begin();iter!=duck_map.end();++iter) if (iter->second->get_type()&Duck::TYPE_TANGENT ) ret.push_back(iter->second);
 405         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 406                 if (!(iter->second->get_type()&Duck::TYPE_POSITION) &&
 407                         !(iter->second->get_type()&Duck::TYPE_VERTEX) &&
 408                         !(iter->second->get_type()&Duck::TYPE_TANGENT))
 409                         ret.push_back(iter->second);
 410         return ret;
 411 }
 412
 413 void
 414 Duckmatic::unselect_duck(const etl::handle<Duck> &duck)
 415 {
 416         if(duck && selected_ducks.count(duck->get_guid()))
 417         {
 418                 selected_ducks.erase(duck->get_guid());
 419                 signal_duck_selection_changed_();
 420         }
 421 }
 422
 423 void
 424 Duckmatic::toggle_select_duck(const etl::handle<Duck> &duck)
 425 {
 426         if(duck_is_selected(duck))
 427                 unselect_duck(duck);
 428         else
 429                 select_duck(duck);
 430 }
 431
 432 void
 433 Duckmatic::translate_selected_ducks(const synfig::Vector& vector)
 434 {
 435         if(duck_dragger_)
 436                 duck_dragger_->duck_drag(this,vector);
 437 }
 438
 439 void
 440 Duckmatic::start_duck_drag(const synfig::Vector& offset)
 441 {
 442         if(duck_dragger_)
 443                 duck_dragger_->begin_duck_drag(this,offset);
 444
 445         //drag_offset_=offset;
 446         drag_offset_=find_duck(offset)->get_trans_point();
 447 }
 448
 449 bool
 450 Duckmatic::end_duck_drag()
 451 {
 452         if(duck_dragger_)
 453                 return duck_dragger_->end_duck_drag(this);
 454         return false;
 455 }
 456
 457 Point
 458 Duckmatic::snap_point_to_grid(const synfig::Point& x, float radius)const
 459 {
 460         Point ret(x);
 461
 462         GuideList::const_iterator guide_x,guide_y;
 463         bool has_guide_x(false), has_guide_y(false);
 464
 465         guide_x=find_guide_x(ret,radius);
 466         if(guide_x!=guide_list_x_.end())
 467                 has_guide_x=true;
 468
 469         guide_y=find_guide_y(ret,radius);
 470         if(guide_y!=guide_list_y_.end())
 471                 has_guide_y=true;
 472
 473         if(get_grid_snap())
 474         {
 475                 Point snap(
 476                         floor(ret[0]/get_grid_size()[0]+0.5)*get_grid_size()[0],
 477                         floor(ret[1]/get_grid_size()[1]+0.5)*get_grid_size()[1]);
 478
 479                 if(abs(snap[0]-ret[0])<=radius && (!has_guide_x || abs(snap[0]-ret[0])<=abs(*guide_x-ret[0])))
 480                         ret[0]=snap[0],has_guide_x=false;
 481                 if(abs(snap[1]-ret[1])<=radius && (!has_guide_y || abs(snap[1]-ret[1])<=abs(*guide_y-ret[1])))
 482                         ret[1]=snap[1],has_guide_y=false;
 483         }
 484
 485         if(guide_snap)
 486         {
 487                 if(has_guide_x)
 488                         ret[0]=*guide_x;
 489                 if(has_guide_y)
 490                         ret[1]=*guide_y;
 491         }
 492
 493         if(axis_lock)
 494         {
 495                 ret-=drag_offset_;
 496                 if(abs(ret[0])<abs(ret[1]))
 497                         ret[0]=0;
 498                 else
 499                         ret[1]=0;
 500                 ret+=drag_offset_;
 501         }
 502
 503         return ret;
 504 }
 505
 506 void
 507 DuckDrag_Translate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 508 {
 509         last_translate_=Vector(0,0);
 510         {
 511                 drag_offset_=duckmatic->find_duck(offset)->get_trans_point();
 512
 513                 snap=Vector(0,0);
 514         }
 515
 516         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 517         DuckList::const_iterator iter;
 518
 519         positions.clear();
 520         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 521         {
 522                 Point p((*iter)->get_trans_point());
 523                 positions.push_back(p);
 524         }
 525 }
 526
 527 bool
 528 DuckDrag_Translate::end_duck_drag(Duckmatic* duckmatic)
 529 {
 530         if(last_translate_.mag()>0.0001)
 531         {
 532                 duckmatic->signal_edited_selected_ducks();
 533                 return true;
 534         }
 535         else
 536         {
 537                 duckmatic->signal_user_click_selected_ducks(0);
 538                 return false;
 539         }
 540 }
 541
 542 void
 543 DuckDrag_Translate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 544 {
 545         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 546         DuckList::const_iterator iter;
 547
 548         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-drag_offset_);
 549         int i;
 550         Time time(duckmatic->get_time());
 551
 552         // drag the vertex and position ducks first
 553         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 554                 if((*iter)->get_type() == Duck::TYPE_VERTEX || (*iter)->get_type() == Duck::TYPE_POSITION)
 555                         (*iter)->set_trans_point(positions[i]+vect, time);
 556
 557         // then drag the others
 558         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 559                 if ((*iter)->get_type() != Duck::TYPE_VERTEX && (*iter)->get_type() != Duck::TYPE_POSITION)
 560                         (*iter)->set_trans_point(positions[i]+vect, time);
 561
 562         // then patch up the tangents for the vertices we've moved
 563         DuckList duck_list(duckmatic->get_duck_list());
 564         for (iter=duck_list.begin(); iter!=duck_list.end(); ++iter)
 565         {
 566                 if ((*iter)->get_type() == Duck::TYPE_TANGENT || (*iter)->get_type() == Duck::TYPE_WIDTH)
 567                 {
 568                         (*iter)->update(time);
 569                 }
 570         }
 571
 572         last_translate_=vect;
 573 }
 574
 575 void
 576 Duckmatic::signal_edited_selected_ducks()
 577 {
 578         const DuckList ducks(get_selected_ducks());
 579         DuckList::const_iterator iter;
 580
 581         synfig::GUIDSet old_set(selected_ducks);
 582
 583         // If we have more than 20 things to move, then display
 584         // something to explain that it may take a moment
 585         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 586
 587         // Go ahead and call everyone's signals
 588         for(iter=ducks.begin();iter!=ducks.end();++iter)
 589         {
 590                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 591                 {
 592                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 593                         {
 594                                 selected_ducks=old_set;
 595                                 throw String("Bad edit");
 596                         }
 597                 }
 598                 else if (App::restrict_radius_ducks &&
 599                                  (*iter)->is_radius())
 600                 {
 601                         Point point((*iter)->get_point());
 602                         bool changed = false;
 603
 604                         if (point[0] < 0)
 605                         {
 606                                 point[0] = 0;
 607                                 changed = true;
 608                         }
 609                         if (point[1] < 0)
 610                         {
 611                                 point[1] = 0;
 612                                 changed = true;
 613                         }
 614
 615                         if (changed) (*iter)->set_point(point);
 616
 617                         if(!(*iter)->signal_edited()(point))
 618                         {
 619                                 selected_ducks=old_set;
 620                                 throw String("Bad edit");
 621                         }
 622                 }
 623                 else
 624                 {
 625                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 626                         {
 627                                 selected_ducks=old_set;
 628                                 throw String("Bad edit");
 629                         }
 630                 }
 631         }
 632         selected_ducks=old_set;
 633 }
 634
 635 void
 636 Duckmatic::signal_user_click_selected_ducks(int button)
 637 {
 638         const DuckList ducks(get_selected_ducks());
 639         DuckList::const_iterator iter;
 640
 641         for(iter=ducks.begin();iter!=ducks.end();++iter)
 642         {
 643                 (*iter)->signal_user_click(button)();
 644         }
 645 }
 646
 647 void
 648 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 649 {
 650         //if(!duck_map.count(duck->get_guid()))
 651         {
 652                 if(duck_data_share_map.count(duck->get_data_guid()))
 653                 {
 654                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 655                 }
 656                 else
 657                 {
 658                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 659                         duck->set_shared_point(point);
 660                         duck_data_share_map[duck->get_data_guid()]=point;
 661                 }
 662
 663                 duck_map.insert(duck);
 664         }
 665
 666         last_duck_guid=duck->get_guid();
 667 }
 668
 669 void
 670 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 671 {
 672         bezier_list_.push_back(bezier);
 673 }
 674
 675 void
 676 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 677 {
 678         assert(stroke_point_list);
 679
 680         std::list<etl::handle<Stroke> >::iterator iter;
 681
 682         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 683         {
 684                 if((*iter)->stroke_data==stroke_point_list)
 685                         return;
 686         }
 687
 688         etl::handle<Stroke> stroke(new Stroke());
 689
 690         stroke->stroke_data=stroke_point_list;
 691         stroke->color=color;
 692
 693         stroke_list_.push_back(stroke);
 694 }
 695
 696 void
 697 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 698 {
 699         add_stroke(stroke_point_list,color);
 700         persistent_stroke_list_.push_back(stroke_list_.back());
 701 }
 702
 703 void
 704 Duckmatic::clear_persistent_strokes()
 705 {
 706         persistent_stroke_list_.clear();
 707 }
 708
 709 void
 710 Duckmatic::set_show_persistent_strokes(bool x)
 711 {
 712         if(x!=show_persistent_strokes)
 713         {
 714                 show_persistent_strokes=x;
 715                 if(x)
 716                         stroke_list_=persistent_stroke_list_;
 717                 else
 718                         stroke_list_.clear();
 719         }
 720 }
 721
 722 void
 723 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 724 {
 725         duck_map.erase(duck->get_guid());
 726 }
 727
 728 etl::handle<Duckmatic::Duck>
 729 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 730 {
 731         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 732         if(iter!=duck_map.end())
 733                 return iter->second;
 734         return 0;
 735
 736 /*      std::list<handle<Duck> >::reverse_iterator iter;
 737
 738         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 739         {
 740                 if(*iter!=duck && **iter==*duck)
 741                 {
 742                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 743                         return *iter;
 744                 }
 745         }
 746         return 0;
 747 */
 748 }
 749
 750 etl::handle<Duckmatic::Duck>
 751 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 752 {
 753         etl::handle<Duck> similar(find_similar_duck(duck));
 754         if(!similar)
 755         {
 756                 add_duck(duck);
 757                 return duck;
 758         }
 759         return similar;
 760 }
 761
 762 void
 763 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 764 {
 765         std::list<handle<Bezier> >::iterator iter;
 766
 767         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 768         {
 769                 if(*iter==bezier)
 770                 {
 771                         bezier_list_.erase(iter);
 772                         return;
 773                 }
 774         }
 775         synfig::warning("Unable to find bezier to erase!");
 776 }
 777
 778 etl::handle<Duckmatic::Duck>
 779 Duckmatic::last_duck()const
 780 {
 781         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 782         if(iter!=duck_map.end())
 783                 return iter->second;
 784         return 0;
 785 }
 786
 787 etl::handle<Duckmatic::Bezier>
 788 Duckmatic::last_bezier()const
 789 {
 790         return bezier_list_.back();
 791 }
 792
 793 etl::handle<Duckmatic::Duck>
 794 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 795 {
 796         if(radius==0)radius=10000000;
 797
 798         if(type==Duck::TYPE_DEFAULT)
 799                 type=get_type_mask();
 800
 801         Real closest(10000000);
 802         etl::handle<Duck> ret;
 803
 804         DuckMap::const_iterator iter;
 805
 806         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 807         {
 808                 const Duck::Handle& duck(iter->second);
 809
 810                 if(duck->get_ignore() ||
 811                    (duck->get_type() && !(type & duck->get_type())))
 812                         continue;
 813
 814                 Real dist((duck->get_trans_point()-point).mag_squared());
 815
 816                 if(duck->get_type()&Duck::TYPE_VERTEX)
 817                         dist*=1.0001;
 818                 else if(duck->get_type()&Duck::TYPE_TANGENT && duck->get_scalar()>0)
 819                         dist*=1.00005;
 820                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 821                         dist*=0.9999;
 822
 823                 if(dist<=closest)
 824                 {
 825                         closest=dist;
 826                         ret=duck;
 827                 }
 828         }
 829
 830         if(radius==0 || closest<radius*radius)
 831                 return ret;
 832
 833         return 0;
 834 }
 835
 836 etl::handle<Duckmatic::Bezier>
 837 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 838 {
 839         return find_bezier(point,radius,radius,location);
 840 }
 841
 842 etl::handle<Duckmatic::Bezier>
 843 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 844 {
 845         if(radius==0)radius=10000000;
 846         Real closest(10000000);
 847         etl::handle<Bezier> ret;
 848
 849         bezier<Point>   curve;
 850
 851         Real    d,step;
 852         float   time = 0;
 853         float   best_time = 0;
 854
 855         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 856         {
 857                 curve[0] = (*iter)->p1->get_trans_point();
 858                 curve[1] = (*iter)->c1->get_trans_point();
 859                 curve[2] = (*iter)->c2->get_trans_point();
 860                 curve[3] = (*iter)->p2->get_trans_point();
 861                 curve.sync();
 862
 863 #if 0
 864                 // I don't know why this doesn't work
 865                 time=curve.find_closest(pos,6);
 866                 d=((curve(time)-pos).mag_squared());
 867
 868 #else
 869                 //set the step size based on the size of the picture
 870                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 871
 872                 step = d/(2*scale); //want to make the distance between lines happy
 873
 874                 step = max(step,0.01); //100 samples should be plenty
 875                 step = min(step,0.1); //10 is minimum
 876
 877                 d = find_closest(curve,pos,step,&closest,&time);
 878 #endif
 879
 880                 if(d < closest)
 881                 {
 882                         closest = d;
 883                         ret = *iter;
 884                         best_time=time;
 885                 }
 886         }
 887
 888         if(closest < radius*radius)
 889         {
 890                 if(location)
 891                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 892
 893                 return ret;
 894         }
 895
 896         return 0;
 897 }
 898
 899 bool
 900 Duckmatic::save_sketch(const synfig::String& filename)const
 901 {
 902         ChangeLocale change_locale(LC_NUMERIC, "C");
 903         std::ofstream file(filename.c_str());
 904
 905         if(!file)return false;
 906
 907         file<<"SKETCH"<<endl;
 908
 909         std::list<etl::handle<Stroke> >::const_iterator iter;
 910
 911         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 912         {
 913                 file<<"C "
 914                         <<(*iter)->color.get_r()<<' '
 915                         <<(*iter)->color.get_g()<<' '
 916                         <<(*iter)->color.get_b()
 917                 <<endl;
 918                 std::list<synfig::Point>::const_iterator viter;
 919                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 920                 {
 921                         file<<"V "
 922                                 <<(*viter)[0]<<' '
 923                                 <<(*viter)[1]
 924                         <<endl;
 925                 }
 926         }
 927         if(!file)return false;
 928         sketch_filename_=filename;
 929         signal_sketch_saved_();
 930         return true;
 931 }
 932
 933 bool
 934 Duckmatic::load_sketch(const synfig::String& filename)
 935 {
 936         ChangeLocale change_locale(LC_NUMERIC, "C");
 937         std::ifstream file(filename.c_str());
 938
 939         if(!file)
 940                 return false;
 941
 942         std::string line;
 943         getline(file,line);
 944
 945         if(line!="SKETCH")
 946         {
 947                 synfig::error("Not a sketch");
 948                 return false;
 949         }
 950
 951         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 952
 953         while(file)
 954         {
 955                 getline(file,line);
 956
 957                 if(line.empty())
 958                         continue;
 959
 960                 switch(line[0])
 961                 {
 962                 case 'C':
 963                 case 'c':
 964                         {
 965                                 stroke_data.spawn();
 966                                 float r,g,b;
 967                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
 968                                 {
 969                                         synfig::warning("Bad color line \"%s\"",line.c_str());
 970                                         r=0;g=0;b=0;
 971                                 }
 972                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
 973                         }
 974                         break;
 975                 case 'V':
 976                 case 'v':
 977                         if(!stroke_data)
 978                         {
 979                                 stroke_data.spawn();
 980                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
 981                         }
 982                         float x,y;
 983                         if(!strscanf(line,"V %f %f",&x, &y))
 984                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
 985                         else
 986                                 stroke_data->push_back(synfig::Vector(x,y));
 987                         break;
 988                 default:
 989                         synfig::warning("Unexpected sketch token '%c'",line[0]);
 990                         break;
 991                 }
 992         }
 993
 994         sketch_filename_=filename;
 995         return true;
 996 }
 997
 998 Duckmatic::Push::Push(Duckmatic *duckmatic_):
 999         duckmatic_(duckmatic_)
1000 {
1001         duck_map=duckmatic_->duck_map;
1002         bezier_list_=duckmatic_->bezier_list_;
1003         duck_data_share_map=duckmatic_->duck_data_share_map;
1004         stroke_list_=duckmatic_->stroke_list_;
1005         duck_dragger_=duckmatic_->duck_dragger_;
1006         needs_restore=true;
1007 }
1008
1009 Duckmatic::Push::~Push()
1010 {
1011         if(needs_restore)
1012                 restore();
1013 }
1014
1015 void
1016 Duckmatic::Push::restore()
1017 {
1018         duckmatic_->duck_map=duck_map;
1019         duckmatic_->bezier_list_=bezier_list_;
1020         duckmatic_->duck_data_share_map=duck_data_share_map;
1021         duckmatic_->stroke_list_=stroke_list_;
1022         duckmatic_->duck_dragger_=duck_dragger_;
1023         needs_restore=false;
1024 }
1025
1026 inline String guid_string(const synfigapp::ValueDesc& x)
1027 {
1028         if(x.parent_is_layer_param())
1029                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1030         //if(x.is_value_node())
1031                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1032 }
1033
1034 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1035 {
1036         synfig::GUID ret(0);
1037
1038         if(x.parent_is_layer_param())
1039         {
1040                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1041         }
1042         else
1043         {
1044                 ret=x.get_value_node()->get_guid();
1045         }
1046
1047         ret^=transform_stack.get_guid();
1048         return ret;
1049 }
1050
1051 /*
1052 Duck::Handle
1053 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)
1054 {
1055         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1056         etl::handle<Duck> duck=new Duck();
1057
1058         return duck;
1059 }
1060 */
1061
1062 bool
1063 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)
1064 {
1065         ValueBase::Type type=value_desc.get_value_type();
1066 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1067         switch(type)
1068         {
1069         case ValueBase::TYPE_REAL:
1070
1071                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1072                 {
1073                         etl::handle<Duck> duck=new Duck();
1074                         duck->set_transform_stack(transform_stack);
1075                         duck->set_radius(true);
1076                         duck->set_type(Duck::TYPE_RADIUS);
1077
1078                         // put the duck on the right hand side of the center
1079                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1080                         duck->set_name(guid_string(value_desc));
1081                         if(value_desc.is_value_node())
1082                         {
1083                                 // If the ValueNode can be directly manipulated,
1084                                 // then set it as so.
1085                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1086                         }
1087                         else
1088                         {
1089                                 duck->set_editable(true);
1090                         }
1091
1092                         if(param_desc && param_desc!=REAL_COOKIE)
1093                         {
1094                                 if(!param_desc->get_origin().empty())
1095                                 {
1096                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1097                                         /*
1098                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1099                                         */
1100                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1101                                         duck->set_origin(last_duck());
1102                                 }
1103                                 duck->set_scalar(param_desc->get_scalar());
1104                         }
1105
1106                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1107                         duck->signal_edited().connect(
1108                                 sigc::bind(
1109                                         sigc::mem_fun(
1110                                                 *canvas_view,
1111                                                 &studio::CanvasView::on_duck_changed),
1112                                         value_desc));
1113                         duck->set_value_desc(value_desc);
1114
1115                         duck->signal_user_click(2).connect(
1116                                 sigc::bind(
1117                                         sigc::bind(
1118                                                 sigc::bind(
1119                                                         sigc::mem_fun(
1120                                                                 *canvas_view,
1121                                                                 &studio::CanvasView::popup_param_menu),
1122                                                         false),
1123                                                 0.0f),
1124                                         value_desc));
1125
1126                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1127
1128                         add_duck(duck);
1129
1130                         return true;
1131                 }
1132                 break;
1133
1134         case ValueBase::TYPE_ANGLE:
1135
1136                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1137                 {
1138                         etl::handle<Duck> duck=new Duck();
1139                         duck->set_type(Duck::TYPE_ANGLE);
1140                         duck->set_transform_stack(transform_stack);
1141                         synfig::Angle angle;
1142
1143                         angle=value_desc.get_value(get_time()).get(Angle());
1144                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1145                         duck->set_name(guid_string(value_desc));
1146                         if(value_desc.is_value_node())
1147                         {
1148                                 ValueNode::Handle value_node=value_desc.get_value_node();
1149                                 //duck->set_name(strprintf("%x",value_node.get()));
1150
1151                                 // If the ValueNode can be directly manipulated,
1152                                 // then set it as so.
1153                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1154                         }
1155                         else
1156                         {
1157                                 //angle=(value_desc.get_value().get(Angle()));
1158                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1159                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1160                                 duck->set_editable(true);
1161                         }
1162
1163                         if(param_desc && param_desc!=REAL_COOKIE)
1164                         {
1165                                 if(!param_desc->get_origin().empty())
1166                                 {
1167                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1168                                         /*
1169                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1170                                         */
1171                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1172                                         duck->set_origin(last_duck());
1173                                 }
1174                                 duck->set_scalar(param_desc->get_scalar());
1175                         }
1176
1177                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1178                         duck->signal_edited_angle().clear();
1179                         duck->signal_edited_angle().connect(
1180                                 sigc::bind(
1181                                         sigc::mem_fun(
1182                                                 *canvas_view,
1183                                                 &studio::CanvasView::on_duck_angle_changed),
1184                                         value_desc));
1185                         duck->set_value_desc(value_desc);
1186
1187                         duck->signal_user_click(2).connect(
1188                                 sigc::bind(
1189                                         sigc::bind(
1190                                                 sigc::bind(
1191                                                         sigc::mem_fun(
1192                                                                 *canvas_view,
1193                                                                 &studio::CanvasView::popup_param_menu),
1194                                                         false),
1195                                                 0.0f),
1196                                         value_desc));
1197                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1198
1199                         add_duck(duck);
1200
1201                         return true;
1202                 }
1203                 break;
1204
1205         case ValueBase::TYPE_VECTOR:
1206                 {
1207                         etl::handle<Duck> duck=new Duck();
1208                         duck->set_transform_stack(transform_stack);
1209
1210                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1211                         duck->set_name(guid_string(value_desc));
1212                         if(value_desc.is_value_node())
1213                         {
1214                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1215
1216                                 // If the ValueNode can be directly manipulated,
1217                                 // then set it as so.
1218                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1219                         }
1220                         else
1221                         {
1222                                 //duck->set_point(value_desc.get_value().get(Point()));
1223                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1224                                 duck->set_editable(true);
1225                         }
1226
1227                         // If we were passed a parameter description
1228                         if(param_desc)
1229                         {
1230                                 if(!param_desc->get_connect().empty())
1231                                 {
1232                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1233                                         Duck::Handle connect_duck;
1234                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1235                                         {
1236                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1237                                         }
1238                                         else
1239                                         {
1240                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1241                                                 connect_duck=last_duck();
1242                                         }
1243                                         duck->set_connect_duck(connect_duck);
1244                                 }
1245                                 if(!param_desc->get_box().empty())
1246                                 {
1247                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1248                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1249                                         duck->set_box_duck(last_duck());
1250                                 }
1251
1252                                 // If we have an origin
1253                                 if(!param_desc->get_origin().empty())
1254                                 {
1255                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1256                                         /*
1257                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1258                                         */
1259                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1260                                         duck->set_origin(last_duck());
1261                                         duck->set_type(Duck::TYPE_VERTEX);
1262                                 }
1263                                 else
1264                                         duck->set_type(Duck::TYPE_POSITION);
1265
1266                                 duck->set_scalar(param_desc->get_scalar());
1267                         }
1268                         else
1269                                 duck->set_type(Duck::TYPE_POSITION);
1270
1271                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1272                         duck->signal_edited().connect(
1273                                 sigc::bind(
1274                                         sigc::mem_fun(
1275                                                 *canvas_view,
1276                                                 &studio::CanvasView::on_duck_changed),
1277                                         value_desc));
1278                         duck->set_value_desc(value_desc);
1279
1280                         duck->signal_user_click(2).connect(
1281                                 sigc::bind(
1282                                         sigc::bind(
1283                                                 sigc::bind(
1284                                                         sigc::mem_fun(
1285                                                                 *canvas_view,
1286                                                                 &studio::CanvasView::popup_param_menu),
1287                                                         false),
1288                                                 1.0f),
1289                                         value_desc));
1290                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1291                         add_duck(duck);
1292
1293                         return true;
1294                 }
1295                 break;
1296         case ValueBase::TYPE_SEGMENT:
1297                 {
1298                         etl::handle<Bezier> bezier(new Bezier());
1299                         ValueNode_Composite::Handle value_node;
1300
1301                         if(value_desc.is_value_node() &&
1302                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1303                         {
1304                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1305                                         return false;
1306                                 bezier->p1=last_duck();
1307                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1308                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1309                                         return false;
1310                                 bezier->c1=last_duck();
1311                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1312                                 bezier->c1->set_origin(bezier->p1);
1313                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1314                                 bezier->c1->set_tangent(true);
1315
1316                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1317                                         return false;
1318                                 bezier->p2=last_duck();
1319                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1320                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1321                                         return false;
1322                                 bezier->c2=last_duck();
1323                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1324                                 bezier->c2->set_origin(bezier->p2);
1325                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1326                                 bezier->c2->set_tangent(true);
1327
1328                                 bezier->signal_user_click(2).connect(
1329                                         sigc::bind(
1330                                                 sigc::mem_fun(
1331                                                         *canvas_view,
1332                                                         &studio::CanvasView::popup_param_menu_bezier),
1333                                                 value_desc));
1334
1335                                 add_bezier(bezier);
1336                         }
1337                         else if(value_desc.get_value().is_valid())
1338                         {
1339                                 Segment segment=value_desc.get_value();
1340                                 etl::handle<Duck> duck_p,duck_c;
1341                                 synfig::String name;
1342                                 if(param_desc)
1343                                 {
1344                                         name=param_desc->get_local_name();
1345                                 }
1346                                 else
1347                                 {
1348                                         name=guid_string(value_desc);
1349                                 }
1350
1351                                 duck_p=new Duck(segment.p1);
1352                                 duck_p->set_name(name+".P1");
1353                                 duck_p->set_type(Duck::TYPE_VERTEX);
1354                                 add_duck(duck_p);
1355
1356                                 duck_c=new Duck(segment.t1);
1357                                 duck_c->set_name(name+".T1");
1358                                 duck_c->set_type(Duck::TYPE_TANGENT);
1359                                 add_duck(duck_c);
1360                                 duck_c->set_origin(duck_p);
1361                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1362                                 duck_c->set_tangent(true);
1363
1364                                 bezier->p1=duck_p;
1365                                 bezier->c1=duck_c;
1366
1367                                 duck_p=new Duck(segment.p2);
1368                                 duck_p->set_name(name+".P2");
1369                                 duck_p->set_type(Duck::TYPE_VERTEX);
1370                                 add_duck(duck_p);
1371
1372                                 duck_c=new Duck(segment.t2);
1373                                 duck_c->set_type(Duck::TYPE_TANGENT);
1374                                 duck_c->set_name(name+".T2");
1375                                 add_duck(duck_c);
1376                                 duck_c->set_origin(duck_p);
1377                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1378                                 duck_c->set_tangent(true);
1379
1380                                 bezier->p2=duck_p;
1381                                 bezier->c2=duck_c;
1382                                 add_bezier(bezier);
1383                         }
1384
1385                         return true;
1386                 }
1387                 break;
1388         case ValueBase::TYPE_BLINEPOINT:
1389         {
1390
1391                 if(value_desc.is_value_node() &&
1392                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1393                 {
1394                         ValueNode_Composite::Handle value_node;
1395                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1396
1397                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1398                                 return false;
1399                         etl::handle<Duck> vertex_duck(last_duck());
1400                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1401                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1402                                 return false;
1403                         etl::handle<Duck> t1_duck(last_duck());
1404
1405                         t1_duck->set_origin(vertex_duck);
1406                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1407                         t1_duck->set_tangent(true);
1408
1409                         etl::handle<Duck> t2_duck;
1410
1411                         // If the tangents are split
1412                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1413                         {
1414                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1415                                         return false;
1416                                 t2_duck=last_duck();
1417                                 t2_duck->set_origin(vertex_duck);
1418                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1419                                 t2_duck->set_tangent(true);
1420                         }
1421                         else
1422                         {
1423                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1424                                         return false;
1425                                 t2_duck=last_duck();
1426                                 t2_duck->set_origin(vertex_duck);
1427                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1428                                 t2_duck->set_tangent(true);
1429                         }
1430                         return true;
1431                 }
1432
1433         }
1434         break;
1435         case ValueBase::TYPE_LIST:
1436         {
1437                 // Check for BLine
1438                 if (value_desc.is_value_node() &&
1439                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1440                 {
1441                         ValueNode_BLine::Handle value_node;
1442                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1443
1444                         int i,first=-1;
1445
1446                         etl::handle<Bezier> bezier;
1447                         etl::handle<Duck> first_duck;
1448                         etl::handle<Duck> duck, tduck;
1449
1450                         for (i = 0; i < value_node->link_count(); i++)
1451                         {
1452                                 float amount(value_node->list[i].amount_at_time(get_time()));
1453
1454                                 // skip vertices that aren't fully on
1455                                 if (amount < 0.9999f)
1456                                         continue;
1457
1458                                 // remember the index of the first vertex we didn't skip
1459                                 if (first == -1)
1460                                         first = i;
1461
1462                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1463
1464                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1465                                 ValueNode_Composite::Handle composite_vertex_value_node(
1466                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1467
1468                                 // add the vertex duck - it's a composite
1469                                 if(composite_vertex_value_node)
1470                                 {
1471                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1472                                         {
1473                                                 duck=last_duck();
1474                                                 if(i==first)
1475                                                         first_duck=duck;
1476                                                 duck->set_type(Duck::TYPE_VERTEX);
1477
1478                                                 duck->signal_user_click(2).clear();
1479                                                 duck->signal_user_click(2).connect(
1480                                                         sigc::bind(
1481                                                                 sigc::bind(
1482                                                                         sigc::bind(
1483                                                                                 sigc::mem_fun(
1484                                                                                         *canvas_view,
1485                                                                                         &studio::CanvasView::popup_param_menu),
1486                                                                                 false),
1487                                                                         1.0f),
1488                                                                 synfigapp::ValueDesc(value_node,i)));
1489                                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1490
1491                                                 if(param_desc)
1492                                                 {
1493                                                         if(!param_desc->get_origin().empty())
1494                                                         {
1495                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1496                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1497                                                                 duck->set_origin(last_duck());
1498 /*
1499                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1500                                                                 if(value.same_type_as(synfig::Point()))
1501                                                                         duck->set_origin(value.get(synfig::Point()));
1502 */
1503                                                         }
1504                                                 }
1505                                         }
1506                                         else
1507                                                 return false;
1508                                 }
1509                                 // else it's not a composite
1510                                 else
1511                                 {
1512                                         duck=new Duck(bline_point.get_vertex());
1513                                         if(i==first)
1514                                                 first_duck=duck;
1515                                         duck->set_transform_stack(transform_stack);
1516                                         duck->set_editable(false);
1517                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1518                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1519
1520                                         duck->set_type(Duck::TYPE_VERTEX);
1521                                         if(param_desc)
1522                                         {
1523                                                 if(!param_desc->get_origin().empty())
1524                                                 {
1525                                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1526                                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1527                                                         duck->set_origin(last_duck());
1528 /*
1529                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1530                                                         if(value.same_type_as(synfig::Point()))
1531                                                                 duck->set_origin(value.get(synfig::Point()));
1532 */
1533                                                 }
1534                                         }
1535                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1536                                         duck=add_similar_duck(duck);
1537 //                                      add_duck(duck);
1538                                 }
1539
1540                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1541                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1542                                         !param_desc)
1543                                 {
1544                                         etl::handle<Duck> width;
1545                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1546                                         {
1547                                                 width=last_duck();
1548                                                 width->set_origin(duck);
1549                                                 width->set_type(Duck::TYPE_WIDTH);
1550                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1551
1552                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1553                                                 if (param_desc)
1554                                                 {
1555                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1556                                                         if(value.same_type_as(synfig::Real()))
1557                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1558                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1559                                                         else
1560                                                                 width->set_scalar(0.5f);
1561                                                 }
1562                                                 // otherwise just present the raw unscaled width
1563                                                 else
1564                                                         width->set_scalar(0.5f);
1565                                         }
1566                                         else
1567                                                 synfig::error("Unable to add width duck!");
1568                                 }
1569
1570                                 // each bezier uses t2 of one point and t1 of the next
1571                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1572                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1573                                 if(bezier)
1574                                 {
1575                                         // Add the tangent1 duck
1576                                         if(composite_vertex_value_node)
1577                                         {
1578                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1579                                                         return false;
1580                                                 tduck=last_duck();
1581                                         }
1582                                         else
1583                                         {
1584                                                 tduck=new Duck(bline_point.get_tangent1());
1585                                                 tduck->set_transform_stack(transform_stack);
1586                                                 tduck->set_editable(false);
1587                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1588 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1589                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1590                                                 tduck=add_similar_duck(tduck);
1591 //                                              add_duck(duck);
1592                                         }
1593
1594                                         tduck->set_origin(duck);
1595                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1596                                         tduck->set_tangent(true);
1597
1598                                         bezier->p2=duck;
1599                                         bezier->c2=tduck;
1600
1601                                         bezier->signal_user_click(2).connect(
1602                                                 sigc::bind(
1603                                                         sigc::mem_fun(
1604                                                                 *canvas_view,
1605                                                                 &studio::CanvasView::popup_param_menu_bezier),
1606                                                         synfigapp::ValueDesc(value_node,i)));
1607
1608                                         duck->signal_user_click(2).clear();
1609                                         duck->signal_user_click(2).connect(
1610                                                 sigc::bind(
1611                                                         sigc::bind(
1612                                                                 sigc::bind(
1613                                                                         sigc::mem_fun(
1614                                                                                 *canvas_view,
1615                                                                                 &studio::CanvasView::popup_param_menu),
1616                                                                         false),
1617                                                                 1.0f),
1618                                                         synfigapp::ValueDesc(value_node,i)));
1619                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1620
1621                                         add_bezier(bezier);
1622                                         bezier=0;
1623                                 }
1624
1625                                 // don't start a new bezier for the last point in the line if we're not looped
1626                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1627                                         continue;
1628
1629                                 bezier=new Bezier();
1630
1631                                 // Add the tangent2 duck
1632                                 if(composite_vertex_value_node)
1633                                 {
1634                                         int i=bline_point.get_split_tangent_flag()?5:4;
1635                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1636                                                 return false;
1637                                         tduck=last_duck();
1638                                 }
1639                                 else
1640                                 {
1641                                         if(bline_point.get_split_tangent_flag())
1642                                                 tduck=new Duck(bline_point.get_tangent2());
1643                                         else
1644                                                 tduck=new Duck(bline_point.get_tangent1());
1645
1646                                         tduck->set_transform_stack(transform_stack);
1647                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1648                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1649                                         tduck->set_editable(false);
1650                                         tduck=add_similar_duck(tduck);
1651 //                                      add_duck(duck);
1652                                         if(param_desc)
1653                                         {
1654                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1655                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1656                                                 duck->set_origin(last_duck());
1657 /*
1658                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1659                                                 if(value.same_type_as(synfig::Point()))
1660                                                         duck->set_origin(value.get(synfig::Point()));
1661 */
1662 //                                              if(!param_desc->get_origin().empty())
1663 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1664                                         }
1665                                         duck->signal_user_click(2).clear();
1666                                         duck->signal_user_click(2).connect(
1667                                                 sigc::bind(
1668                                                         sigc::bind(
1669                                                                 sigc::bind(
1670                                                                         sigc::mem_fun(
1671                                                                                 *canvas_view,
1672                                                                                 &studio::CanvasView::popup_param_menu),
1673                                                                         false),
1674                                                                 1.0f),
1675                                                         synfigapp::ValueDesc(value_node,i)));
1676                                         duck->set_value_desc(synfigapp::ValueDesc(value_node,i));
1677
1678                                 }
1679
1680                                 tduck->set_origin(duck);
1681                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1682                                 tduck->set_tangent(true);
1683
1684                                 bezier->p1=duck;
1685                                 bezier->c1=tduck;
1686                         }
1687
1688                         // Loop if necessary
1689                         if(bezier && value_node->get_loop())
1690                         {
1691                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1692
1693                                 ValueNode_Composite::Handle composite_vertex_value_node(
1694                                         ValueNode_Composite::Handle::cast_dynamic(
1695                                                 value_node->get_link(first)));
1696
1697                                 // Add the vertex duck
1698                                 duck=first_duck;
1699
1700                                 // Add the tangent1 duck
1701                                 if(composite_vertex_value_node)
1702                                 {
1703                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1704                                                 return false;
1705                                         tduck=last_duck();
1706                                 }
1707                                 else
1708                                 {
1709                                         tduck=new Duck(bline_point.get_tangent1());
1710                                         tduck->set_transform_stack(transform_stack);
1711                                         tduck->set_editable(false);
1712                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1713                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1714                                         tduck=add_similar_duck(tduck);
1715                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1716                                         //add_duck(duck);
1717                                 }
1718
1719                                 tduck->set_origin(duck);
1720                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1721                                 tduck->set_tangent(true);
1722
1723                                 bezier->p2=duck;
1724                                 bezier->c2=tduck;
1725
1726                                 bezier->signal_user_click(2).connect(
1727                                         sigc::bind(
1728                                                 sigc::mem_fun(
1729                                                         *canvas_view,
1730                                                         &studio::CanvasView::popup_param_menu_bezier),
1731                                                 synfigapp::ValueDesc(value_node,first)));
1732
1733                                 duck->signal_user_click(2).clear();
1734                                 duck->signal_user_click(2).connect(
1735                                         sigc::bind(
1736                                                 sigc::bind(
1737                                                         sigc::bind(
1738                                                                 sigc::mem_fun(
1739                                                                         *canvas_view,
1740                                                                         &studio::CanvasView::popup_param_menu),
1741                                                                 false),
1742                                                         1.0f),
1743                                                 synfigapp::ValueDesc(value_node,first)));
1744                                 duck->set_value_desc(synfigapp::ValueDesc(value_node,first));
1745
1746                                 add_bezier(bezier);
1747                                 bezier=0;
1748                         }
1749                         return true;
1750                 }
1751                 else // Check for DynamicList
1752                 if(value_desc.is_value_node() &&
1753                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1754                 {
1755                         ValueNode_DynamicList::Handle value_node;
1756                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1757                         int i;
1758
1759                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1760                         {
1761                                 Bezier bezier;
1762                                 etl::handle<Duck> first_duck, duck;
1763                                 int first = -1;
1764                                 for(i=0;i<value_node->link_count();i++)
1765                                 {
1766                                         if(!value_node->list[i].status_at_time(get_time()))
1767                                                 continue;
1768                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1769                                                 return false;
1770                                         duck = last_duck();
1771
1772                                         // remember the index of the first vertex we didn't skip
1773                                         if (first == -1)
1774                                         {
1775                                                 first = i;
1776                                                 first_duck = duck;
1777                                         }
1778
1779                                         if(param_desc && !param_desc->get_origin().empty())
1780                                         {
1781                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1782                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1783                                                 duck->set_origin(last_duck());
1784 /*
1785                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1786                                                 if(value.same_type_as(synfig::Point()))
1787                                                         duck->set_origin(value.get(synfig::Point()));
1788 */
1789 //                                              if(!param_desc->get_origin().empty())
1790 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1791                                         }
1792                                         duck->set_type(Duck::TYPE_VERTEX);
1793                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1794                                         bezier.p2=bezier.c2=duck;
1795
1796                                         if (first != i)
1797                                         {
1798                                                 handle<Bezier> bezier_(new Bezier());
1799                                                 bezier_->p1=bezier.p1;
1800                                                 bezier_->c1=bezier.c1;
1801                                                 bezier_->p2=bezier.p2;
1802                                                 bezier_->c2=bezier.c2;
1803                                                 add_bezier(bezier_);
1804                                                 last_bezier()->signal_user_click(2).connect(
1805                                                         sigc::bind(
1806                                                                 sigc::mem_fun(
1807                                                                         *canvas_view,
1808                                                                         &studio::CanvasView::popup_param_menu_bezier),
1809                                                                 synfigapp::ValueDesc(value_node,i)));
1810                                         }
1811                                 }
1812
1813                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1814                                 {
1815                                         duck = first_duck;
1816
1817                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1818                                         bezier.p2=bezier.c2=duck;
1819
1820                                         handle<Bezier> bezier_(new Bezier());
1821                                         bezier_->p1=bezier.p1;
1822                                         bezier_->c1=bezier.c1;
1823                                         bezier_->p2=bezier.p2;
1824                                         bezier_->c2=bezier.c2;
1825                                         add_bezier(bezier_);
1826                                         last_bezier()->signal_user_click(2).connect(
1827                                                 sigc::bind(
1828                                                         sigc::mem_fun(
1829                                                                 *canvas_view,
1830                                                                 &studio::CanvasView::popup_param_menu_bezier),
1831                                                         synfigapp::ValueDesc(value_node,first)));
1832                                 }
1833                         }
1834                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1835                         {
1836                                 for(i=0;i<value_node->link_count();i++)
1837                                 {
1838                                         if(!value_node->list[i].status_at_time(get_time()))
1839                                                 continue;
1840                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1841                                                 return false;
1842                                 }
1843                         }
1844                         else
1845                                 return false;
1846                 }
1847                 else
1848                 {
1849                         // WRITEME
1850                 }
1851
1852                 return true;
1853         }
1854
1855         break;
1856         default:
1857                 break;
1858         }
1859         return false;
1860 }