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                         duck->get_value_desc().parent_is_value_node())
 549                 {
 550                         ValueNode_BLineCalcVertex::Handle bline_vertex(ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node()));
 551                         if (bline_vertex)
 552                         {
 553                                 ValueNode_Composite::Handle value_node_composite(ValueNode_Composite::Handle::cast_dynamic(duck->get_value_desc().get_parent_value_node()));
 554                                 if (value_node_composite &&
 555                                         value_node_composite->get_type() == ValueBase::TYPE_BLINEPOINT)
 556                                 {
 557                                         int t1_index(value_node_composite->get_link_index_from_name("t1"));
 558                                         int t2_index(value_node_composite->get_link_index_from_name("t2"));
 559                                         int width_index(value_node_composite->get_link_index_from_name("width"));
 560
 561                                         ValueNode::Handle t1_value_node(value_node_composite->get_link(t1_index));
 562                                         ValueNode::Handle t2_value_node(value_node_composite->get_link(t2_index));
 563                                         ValueNode::Handle width_value_node(value_node_composite->get_link(width_index));
 564
 565                                         ValueNode_BLineCalcTangent::Handle bline_tangent_1(ValueNode_BLineCalcTangent::Handle::cast_dynamic(t1_value_node));
 566                                         ValueNode_BLineCalcTangent::Handle bline_tangent_2(ValueNode_BLineCalcTangent::Handle::cast_dynamic(t2_value_node));
 567                                         ValueNode_BLineCalcWidth::Handle bline_width(ValueNode_BLineCalcWidth::Handle::cast_dynamic(width_value_node));
 568
 569                                         if (bline_tangent_1 || bline_tangent_2 || bline_width)
 570                                         {
 571                                                 synfig::Real radius = 0.0;
 572                                                 ValueNode_BLine::Handle bline(ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link(bline_vertex->get_link_index_from_name("bline"))));
 573                                                 Real amount = synfig::find_closest_point((*bline)(time), duck->get_point(), radius, bline->get_loop());
 574
 575                                                 // we need to update the position of the tangent ducks - but how do we find these ducks?
 576                                                 // this is a brute force search - but is there a better way to do it?
 577                                                 if (bline_tangent_1)
 578                                                 {
 579                                                         Vector tangent = (*bline_tangent_1)(time, amount).get(Vector());
 580                                                         DuckList::iterator iter;
 581                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 582                                                                 if ((*iter)->get_value_desc().get_value_node() == t1_value_node)
 583                                                                         (*iter)->set_point(tangent);
 584                                                 }
 585
 586                                                 if (bline_tangent_2)
 587                                                 {
 588                                                         Vector tangent = (*bline_tangent_2)(time, amount).get(Vector());
 589                                                         DuckList::iterator iter;
 590                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 591                                                                 if ((*iter)->get_value_desc().get_value_node() == t2_value_node)
 592                                                                         (*iter)->set_point(tangent);
 593                                                 }
 594
 595                                                 if (bline_width)
 596                                                 {
 597                                                         Real width = (*bline_width)(time, amount).get(Real());
 598                                                         DuckList::iterator iter;
 599                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 600                                                                 if ((*iter)->get_value_desc().get_value_node() == width_value_node)
 601                                                                         (*iter)->set_point(Point(width, 0));
 602                                                 }
 603                                         }
 604                                 }
 605                         }
 606                 }
 607         }
 608
 609         last_translate_=vect;
 610 }
 611
 612 void
 613 Duckmatic::signal_edited_selected_ducks()
 614 {
 615         const DuckList ducks(get_selected_ducks());
 616         DuckList::const_iterator iter;
 617
 618         synfig::GUIDSet old_set(selected_ducks);
 619
 620         // If we have more than 20 things to move, then display
 621         // something to explain that it may take a moment
 622         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 623
 624         // Go ahead and call everyone's signals
 625         for(iter=ducks.begin();iter!=ducks.end();++iter)
 626         {
 627                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 628                 {
 629                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 630                         {
 631                                 selected_ducks=old_set;
 632                                 throw String("Bad edit");
 633                         }
 634                 }
 635                 else if (App::restrict_radius_ducks &&
 636                                  (*iter)->is_radius())
 637                 {
 638                         Point point((*iter)->get_point());
 639                         bool changed = false;
 640
 641                         if (point[0] < 0)
 642                         {
 643                                 point[0] = 0;
 644                                 changed = true;
 645                         }
 646                         if (point[1] < 0)
 647                         {
 648                                 point[1] = 0;
 649                                 changed = true;
 650                         }
 651
 652                         if (changed) (*iter)->set_point(point);
 653
 654                         if(!(*iter)->signal_edited()(point))
 655                         {
 656                                 selected_ducks=old_set;
 657                                 throw String("Bad edit");
 658                         }
 659                 }
 660                 else
 661                 {
 662                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 663                         {
 664                                 selected_ducks=old_set;
 665                                 throw String("Bad edit");
 666                         }
 667                 }
 668         }
 669         selected_ducks=old_set;
 670 }
 671
 672 void
 673 Duckmatic::signal_user_click_selected_ducks(int button)
 674 {
 675         const DuckList ducks(get_selected_ducks());
 676         DuckList::const_iterator iter;
 677
 678         for(iter=ducks.begin();iter!=ducks.end();++iter)
 679         {
 680                 (*iter)->signal_user_click(button)();
 681         }
 682 }
 683
 684 void
 685 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 686 {
 687         //if(!duck_map.count(duck->get_guid()))
 688         {
 689                 if(duck_data_share_map.count(duck->get_data_guid()))
 690                 {
 691                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 692                 }
 693                 else
 694                 {
 695                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 696                         duck->set_shared_point(point);
 697                         duck_data_share_map[duck->get_data_guid()]=point;
 698                 }
 699
 700                 duck_map.insert(duck);
 701         }
 702
 703         last_duck_guid=duck->get_guid();
 704 }
 705
 706 void
 707 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 708 {
 709         bezier_list_.push_back(bezier);
 710 }
 711
 712 void
 713 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 714 {
 715         assert(stroke_point_list);
 716
 717         std::list<etl::handle<Stroke> >::iterator iter;
 718
 719         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 720         {
 721                 if((*iter)->stroke_data==stroke_point_list)
 722                         return;
 723         }
 724
 725         etl::handle<Stroke> stroke(new Stroke());
 726
 727         stroke->stroke_data=stroke_point_list;
 728         stroke->color=color;
 729
 730         stroke_list_.push_back(stroke);
 731 }
 732
 733 void
 734 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 735 {
 736         add_stroke(stroke_point_list,color);
 737         persistent_stroke_list_.push_back(stroke_list_.back());
 738 }
 739
 740 void
 741 Duckmatic::clear_persistent_strokes()
 742 {
 743         persistent_stroke_list_.clear();
 744 }
 745
 746 void
 747 Duckmatic::set_show_persistent_strokes(bool x)
 748 {
 749         if(x!=show_persistent_strokes)
 750         {
 751                 show_persistent_strokes=x;
 752                 if(x)
 753                         stroke_list_=persistent_stroke_list_;
 754                 else
 755                         stroke_list_.clear();
 756         }
 757 }
 758
 759 void
 760 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 761 {
 762         duck_map.erase(duck->get_guid());
 763 }
 764
 765 etl::handle<Duckmatic::Duck>
 766 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 767 {
 768         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 769         if(iter!=duck_map.end())
 770                 return iter->second;
 771         return 0;
 772
 773 /*      std::list<handle<Duck> >::reverse_iterator iter;
 774
 775         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 776         {
 777                 if(*iter!=duck && **iter==*duck)
 778                 {
 779                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 780                         return *iter;
 781                 }
 782         }
 783         return 0;
 784 */
 785 }
 786
 787 etl::handle<Duckmatic::Duck>
 788 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 789 {
 790         etl::handle<Duck> similar(find_similar_duck(duck));
 791         if(!similar)
 792         {
 793                 add_duck(duck);
 794                 return duck;
 795         }
 796         return similar;
 797 }
 798
 799 void
 800 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 801 {
 802         std::list<handle<Bezier> >::iterator iter;
 803
 804         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 805         {
 806                 if(*iter==bezier)
 807                 {
 808                         bezier_list_.erase(iter);
 809                         return;
 810                 }
 811         }
 812         synfig::warning("Unable to find bezier to erase!");
 813 }
 814
 815 etl::handle<Duckmatic::Duck>
 816 Duckmatic::last_duck()const
 817 {
 818         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 819         if(iter!=duck_map.end())
 820                 return iter->second;
 821         return 0;
 822 }
 823
 824 etl::handle<Duckmatic::Bezier>
 825 Duckmatic::last_bezier()const
 826 {
 827         return bezier_list_.back();
 828 }
 829
 830 etl::handle<Duckmatic::Duck>
 831 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 832 {
 833         if(radius==0)radius=10000000;
 834
 835         if(type==Duck::TYPE_DEFAULT)
 836                 type=get_type_mask();
 837
 838         Real closest(10000000);
 839         etl::handle<Duck> ret;
 840
 841         DuckMap::const_iterator iter;
 842
 843         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 844         {
 845                 const Duck::Handle& duck(iter->second);
 846
 847                 if(duck->get_ignore())
 848                         continue;
 849                 Real dist((duck->get_trans_point()-point).mag_squared());
 850
 851                 if(duck->get_type()&Duck::TYPE_VERTEX)
 852                         dist*=1.0001;
 853                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 854                         dist*=0.9999;
 855
 856                 if(dist<=closest && !( duck->get_type() && (!(type & duck->get_type())) ) )
 857                 {
 858                         {
 859                                 closest=dist;
 860                                 ret=duck;
 861                         }
 862                 }
 863         }
 864
 865         if(radius==0 || closest<radius*radius)
 866                 return ret;
 867
 868         return 0;
 869 }
 870
 871 etl::handle<Duckmatic::Bezier>
 872 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 873 {
 874         return find_bezier(point,radius,radius,location);
 875 }
 876
 877 etl::handle<Duckmatic::Bezier>
 878 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 879 {
 880         if(radius==0)radius=10000000;
 881         Real closest(10000000);
 882         etl::handle<Bezier> ret;
 883
 884         bezier<Point>   curve;
 885
 886         Real    d,step;
 887         float   time = 0;
 888         float   best_time = 0;
 889
 890         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 891         {
 892                 curve[0] = (*iter)->p1->get_trans_point();
 893                 curve[1] = (*iter)->c1->get_trans_point();
 894                 curve[2] = (*iter)->c2->get_trans_point();
 895                 curve[3] = (*iter)->p2->get_trans_point();
 896                 curve.sync();
 897
 898 #if 0
 899                 // I don't know why this doesn't work
 900                 time=curve.find_closest(pos,6);
 901                 d=((curve(time)-pos).mag_squared());
 902
 903 #else
 904                 //set the step size based on the size of the picture
 905                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 906
 907                 step = d/(2*scale); //want to make the distance between lines happy
 908
 909                 step = max(step,0.01); //100 samples should be plenty
 910                 step = min(step,0.1); //10 is minimum
 911
 912                 d = find_closest(curve,pos,step,&closest,&time);
 913 #endif
 914
 915                 if(d < closest)
 916                 {
 917                         closest = d;
 918                         ret = *iter;
 919                         best_time=time;
 920                 }
 921         }
 922
 923         if(closest < radius*radius)
 924         {
 925                 if(location)
 926                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 927
 928                 return ret;
 929         }
 930
 931         return 0;
 932 }
 933
 934 bool
 935 Duckmatic::save_sketch(const synfig::String& filename)const
 936 {
 937         ChangeLocale change_locale(LC_NUMERIC, "C");
 938         std::ofstream file(filename.c_str());
 939
 940         if(!file)return false;
 941
 942         file<<"SKETCH"<<endl;
 943
 944         std::list<etl::handle<Stroke> >::const_iterator iter;
 945
 946         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 947         {
 948                 file<<"C "
 949                         <<(*iter)->color.get_r()<<' '
 950                         <<(*iter)->color.get_g()<<' '
 951                         <<(*iter)->color.get_b()
 952                 <<endl;
 953                 std::list<synfig::Point>::const_iterator viter;
 954                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 955                 {
 956                         file<<"V "
 957                                 <<(*viter)[0]<<' '
 958                                 <<(*viter)[1]
 959                         <<endl;
 960                 }
 961         }
 962         if(!file)return false;
 963         sketch_filename_=filename;
 964         signal_sketch_saved_();
 965         return true;
 966 }
 967
 968 bool
 969 Duckmatic::load_sketch(const synfig::String& filename)
 970 {
 971         ChangeLocale change_locale(LC_NUMERIC, "C");
 972         std::ifstream file(filename.c_str());
 973
 974         if(!file)
 975                 return false;
 976
 977         std::string line;
 978         getline(file,line);
 979
 980         if(line!="SKETCH")
 981         {
 982                 synfig::error("Not a sketch");
 983                 return false;
 984         }
 985
 986         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 987
 988         while(file)
 989         {
 990                 getline(file,line);
 991
 992                 if(line.empty())
 993                         continue;
 994
 995                 switch(line[0])
 996                 {
 997                 case 'C':
 998                 case 'c':
 999                         {
1000                                 stroke_data.spawn();
1001                                 float r,g,b;
1002                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
1003                                 {
1004                                         synfig::warning("Bad color line \"%s\"",line.c_str());
1005                                         r=0;g=0;b=0;
1006                                 }
1007                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
1008                         }
1009                         break;
1010                 case 'V':
1011                 case 'v':
1012                         if(!stroke_data)
1013                         {
1014                                 stroke_data.spawn();
1015                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
1016                         }
1017                         float x,y;
1018                         if(!strscanf(line,"V %f %f",&x, &y))
1019                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
1020                         else
1021                                 stroke_data->push_back(synfig::Vector(x,y));
1022                         break;
1023                 default:
1024                         synfig::warning("Unexpected sketch token '%c'",line[0]);
1025                         break;
1026                 }
1027         }
1028
1029         sketch_filename_=filename;
1030         return true;
1031 }
1032
1033 Duckmatic::Push::Push(Duckmatic *duckmatic_):
1034         duckmatic_(duckmatic_)
1035 {
1036         duck_map=duckmatic_->duck_map;
1037         bezier_list_=duckmatic_->bezier_list_;
1038         duck_data_share_map=duckmatic_->duck_data_share_map;
1039         stroke_list_=duckmatic_->stroke_list_;
1040         duck_dragger_=duckmatic_->duck_dragger_;
1041         needs_restore=true;
1042 }
1043
1044 Duckmatic::Push::~Push()
1045 {
1046         if(needs_restore)
1047                 restore();
1048 }
1049
1050 void
1051 Duckmatic::Push::restore()
1052 {
1053         duckmatic_->duck_map=duck_map;
1054         duckmatic_->bezier_list_=bezier_list_;
1055         duckmatic_->duck_data_share_map=duck_data_share_map;
1056         duckmatic_->stroke_list_=stroke_list_;
1057         duckmatic_->duck_dragger_=duck_dragger_;
1058         needs_restore=false;
1059 }
1060
1061 inline String guid_string(const synfigapp::ValueDesc& x)
1062 {
1063         if(x.parent_is_layer_param())
1064                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1065         //if(x.is_value_node())
1066                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1067 }
1068
1069 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1070 {
1071         synfig::GUID ret(0);
1072
1073         if(x.parent_is_layer_param())
1074         {
1075                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1076         }
1077         else
1078         {
1079                 ret=x.get_value_node()->get_guid();
1080         }
1081
1082         ret^=transform_stack.get_guid();
1083         return ret;
1084 }
1085
1086 /*
1087 Duck::Handle
1088 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)
1089 {
1090         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1091         etl::handle<Duck> duck=new Duck();
1092
1093         return duck;
1094 }
1095 */
1096
1097 bool
1098 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)
1099 {
1100         ValueBase::Type type=value_desc.get_value_type();
1101 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1102         switch(type)
1103         {
1104         case ValueBase::TYPE_REAL:
1105
1106                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1107                 {
1108                         etl::handle<Duck> duck=new Duck();
1109                         duck->set_transform_stack(transform_stack);
1110                         duck->set_radius(true);
1111                         duck->set_type(Duck::TYPE_RADIUS);
1112
1113                         // put the duck on the right hand side of the center
1114                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1115                         duck->set_name(guid_string(value_desc));
1116                         if(value_desc.is_value_node())
1117                         {
1118                                 // If the ValueNode can be directly manipulated,
1119                                 // then set it as so.
1120                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1121                         }
1122                         else
1123                         {
1124                                 duck->set_editable(true);
1125                         }
1126
1127                         if(param_desc && param_desc!=REAL_COOKIE)
1128                         {
1129                                 if(!param_desc->get_origin().empty())
1130                                 {
1131                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1132                                         /*
1133                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1134                                         */
1135                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1136                                         duck->set_origin(last_duck());
1137                                 }
1138                                 duck->set_scalar(param_desc->get_scalar());
1139                         }
1140
1141                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1142                         duck->signal_edited().connect(
1143                                 sigc::bind(
1144                                         sigc::mem_fun(
1145                                                 *canvas_view,
1146                                                 &studio::CanvasView::on_duck_changed),
1147                                         value_desc));
1148                         duck->set_value_desc(value_desc);
1149
1150                         duck->signal_user_click(2).connect(
1151                                 sigc::bind(
1152                                         sigc::bind(
1153                                                 sigc::bind(
1154                                                         sigc::mem_fun(
1155                                                                 *canvas_view,
1156                                                                 &studio::CanvasView::popup_param_menu),
1157                                                         false),
1158                                                 0.0f),
1159                                         value_desc));
1160
1161                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1162
1163                         add_duck(duck);
1164
1165                         return true;
1166                 }
1167                 break;
1168
1169         case ValueBase::TYPE_ANGLE:
1170
1171                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1172                 {
1173                         etl::handle<Duck> duck=new Duck();
1174                         duck->set_type(Duck::TYPE_ANGLE);
1175                         duck->set_transform_stack(transform_stack);
1176                         synfig::Angle angle;
1177
1178                         angle=value_desc.get_value(get_time()).get(Angle());
1179                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1180                         duck->set_name(guid_string(value_desc));
1181                         if(value_desc.is_value_node())
1182                         {
1183                                 ValueNode::Handle value_node=value_desc.get_value_node();
1184                                 //duck->set_name(strprintf("%x",value_node.get()));
1185
1186                                 // If the ValueNode can be directly manipulated,
1187                                 // then set it as so.
1188                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1189                         }
1190                         else
1191                         {
1192                                 //angle=(value_desc.get_value().get(Angle()));
1193                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1194                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1195                                 duck->set_editable(true);
1196                         }
1197
1198                         if(param_desc && param_desc!=REAL_COOKIE)
1199                         {
1200                                 if(!param_desc->get_origin().empty())
1201                                 {
1202                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1203                                         /*
1204                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1205                                         */
1206                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1207                                         duck->set_origin(last_duck());
1208                                 }
1209                                 duck->set_scalar(param_desc->get_scalar());
1210                         }
1211
1212                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1213                         duck->signal_edited_angle().clear();
1214                         duck->signal_edited_angle().connect(
1215                                 sigc::bind(
1216                                         sigc::mem_fun(
1217                                                 *canvas_view,
1218                                                 &studio::CanvasView::on_duck_angle_changed),
1219                                         value_desc));
1220                         duck->set_value_desc(value_desc);
1221
1222                         duck->signal_user_click(2).connect(
1223                                 sigc::bind(
1224                                         sigc::bind(
1225                                                 sigc::bind(
1226                                                         sigc::mem_fun(
1227                                                                 *canvas_view,
1228                                                                 &studio::CanvasView::popup_param_menu),
1229                                                         false),
1230                                                 0.0f),
1231                                         value_desc));
1232                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1233
1234                         add_duck(duck);
1235
1236                         return true;
1237                 }
1238                 break;
1239
1240         case ValueBase::TYPE_VECTOR:
1241                 {
1242                         etl::handle<Duck> duck=new Duck();
1243                         duck->set_transform_stack(transform_stack);
1244
1245                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1246                         duck->set_name(guid_string(value_desc));
1247                         if(value_desc.is_value_node())
1248                         {
1249                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1250
1251                                 // If the ValueNode can be directly manipulated,
1252                                 // then set it as so.
1253                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1254                         }
1255                         else
1256                         {
1257                                 //duck->set_point(value_desc.get_value().get(Point()));
1258                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1259                                 duck->set_editable(true);
1260                         }
1261
1262                         // If we were passed a parameter description
1263                         if(param_desc)
1264                         {
1265                                 if(!param_desc->get_connect().empty())
1266                                 {
1267                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1268                                         Duck::Handle connect_duck;
1269                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1270                                         {
1271                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1272                                         }
1273                                         else
1274                                         {
1275                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1276                                                 connect_duck=last_duck();
1277                                         }
1278                                         duck->set_connect_duck(connect_duck);
1279                                 }
1280                                 if(!param_desc->get_box().empty())
1281                                 {
1282                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1283                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1284                                         duck->set_box_duck(last_duck());
1285                                 }
1286
1287                                 // If we have an origin
1288                                 if(!param_desc->get_origin().empty())
1289                                 {
1290                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1291                                         /*
1292                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1293                                         */
1294                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1295                                         duck->set_origin(last_duck());
1296                                         duck->set_type(Duck::TYPE_VERTEX);
1297                                 }
1298                                 else
1299                                         duck->set_type(Duck::TYPE_POSITION);
1300
1301                                 duck->set_scalar(param_desc->get_scalar());
1302                         }
1303                         else
1304                                 duck->set_type(Duck::TYPE_POSITION);
1305
1306                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1307                         duck->signal_edited().connect(
1308                                 sigc::bind(
1309                                         sigc::mem_fun(
1310                                                 *canvas_view,
1311                                                 &studio::CanvasView::on_duck_changed),
1312                                         value_desc));
1313                         duck->set_value_desc(value_desc);
1314
1315                         duck->signal_user_click(2).connect(
1316                                 sigc::bind(
1317                                         sigc::bind(
1318                                                 sigc::bind(
1319                                                         sigc::mem_fun(
1320                                                                 *canvas_view,
1321                                                                 &studio::CanvasView::popup_param_menu),
1322                                                         false),
1323                                                 1.0f),
1324                                         value_desc));
1325                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1326                         add_duck(duck);
1327
1328                         return true;
1329                 }
1330                 break;
1331         case ValueBase::TYPE_SEGMENT:
1332                 {
1333                         etl::handle<Bezier> bezier(new Bezier());
1334                         ValueNode_Composite::Handle value_node;
1335
1336                         if(value_desc.is_value_node() &&
1337                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1338                         {
1339                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1340                                         return false;
1341                                 bezier->p1=last_duck();
1342                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1343                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1344                                         return false;
1345                                 bezier->c1=last_duck();
1346                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1347                                 bezier->c1->set_origin(bezier->p1);
1348                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1349                                 bezier->c1->set_tangent(true);
1350
1351                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1352                                         return false;
1353                                 bezier->p2=last_duck();
1354                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1355                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1356                                         return false;
1357                                 bezier->c2=last_duck();
1358                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1359                                 bezier->c2->set_origin(bezier->p2);
1360                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1361                                 bezier->c2->set_tangent(true);
1362
1363                                 bezier->signal_user_click(2).connect(
1364                                         sigc::bind(
1365                                                 sigc::mem_fun(
1366                                                         *canvas_view,
1367                                                         &studio::CanvasView::popup_param_menu_bezier),
1368                                                 value_desc));
1369
1370                                 add_bezier(bezier);
1371                         }
1372                         else if(value_desc.get_value().is_valid())
1373                         {
1374                                 Segment segment=value_desc.get_value();
1375                                 etl::handle<Duck> duck_p,duck_c;
1376                                 synfig::String name;
1377                                 if(param_desc)
1378                                 {
1379                                         name=param_desc->get_local_name();
1380                                 }
1381                                 else
1382                                 {
1383                                         name=guid_string(value_desc);
1384                                 }
1385
1386                                 duck_p=new Duck(segment.p1);
1387                                 duck_p->set_name(name+".P1");
1388                                 duck_p->set_type(Duck::TYPE_VERTEX);
1389                                 add_duck(duck_p);
1390
1391                                 duck_c=new Duck(segment.t1);
1392                                 duck_c->set_name(name+".T1");
1393                                 duck_c->set_type(Duck::TYPE_TANGENT);
1394                                 add_duck(duck_c);
1395                                 duck_c->set_origin(duck_p);
1396                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1397                                 duck_c->set_tangent(true);
1398
1399                                 bezier->p1=duck_p;
1400                                 bezier->c1=duck_c;
1401
1402                                 duck_p=new Duck(segment.p2);
1403                                 duck_p->set_name(name+".P2");
1404                                 duck_p->set_type(Duck::TYPE_VERTEX);
1405                                 add_duck(duck_p);
1406
1407                                 duck_c=new Duck(segment.t2);
1408                                 duck_c->set_type(Duck::TYPE_TANGENT);
1409                                 duck_c->set_name(name+".T2");
1410                                 add_duck(duck_c);
1411                                 duck_c->set_origin(duck_p);
1412                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1413                                 duck_c->set_tangent(true);
1414
1415                                 bezier->p2=duck_p;
1416                                 bezier->c2=duck_c;
1417                                 add_bezier(bezier);
1418                         }
1419
1420                         return true;
1421                 }
1422                 break;
1423         case ValueBase::TYPE_BLINEPOINT:
1424         {
1425
1426                 if(value_desc.is_value_node() &&
1427                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1428                 {
1429                         ValueNode_Composite::Handle value_node;
1430                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1431
1432                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1433                                 return false;
1434                         etl::handle<Duck> vertex_duck(last_duck());
1435                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1436                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1437                                 return false;
1438                         etl::handle<Duck> t1_duck(last_duck());
1439
1440                         t1_duck->set_origin(vertex_duck);
1441                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1442                         t1_duck->set_tangent(true);
1443
1444                         etl::handle<Duck> t2_duck;
1445
1446                         // If the tangents are split
1447                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1448                         {
1449                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1450                                         return false;
1451                                 t2_duck=last_duck();
1452                                 t2_duck->set_origin(vertex_duck);
1453                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1454                                 t2_duck->set_tangent(true);
1455                         }
1456                         else
1457                         {
1458                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1459                                         return false;
1460                                 t2_duck=last_duck();
1461                                 t2_duck->set_origin(vertex_duck);
1462                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1463                                 t2_duck->set_tangent(true);
1464                         }
1465                         return true;
1466                 }
1467
1468         }
1469         break;
1470         case ValueBase::TYPE_LIST:
1471         {
1472                 // Check for BLine
1473                 if (value_desc.is_value_node() &&
1474                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1475                 {
1476                         ValueNode_BLine::Handle value_node;
1477                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1478
1479                         int i,first=-1;
1480
1481                         etl::handle<Bezier> bezier;
1482                         etl::handle<Duck> first_duck;
1483                         etl::handle<Duck> duck, tduck;
1484
1485                         for (i = 0; i < value_node->link_count(); i++)
1486                         {
1487                                 float amount(value_node->list[i].amount_at_time(get_time()));
1488
1489                                 // skip vertices that aren't fully on
1490                                 if (amount < 0.9999f)
1491                                         continue;
1492
1493                                 // remember the index of the first vertex we didn't skip
1494                                 if (first == -1)
1495                                         first = i;
1496
1497                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1498
1499                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1500                                 ValueNode_Composite::Handle composite_vertex_value_node(
1501                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1502
1503                                 // add the vertex duck - it's a composite
1504                                 if(composite_vertex_value_node)
1505                                 {
1506                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1507                                         {
1508                                                 duck=last_duck();
1509                                                 if(i==first)
1510                                                         first_duck=duck;
1511                                                 duck->set_type(Duck::TYPE_VERTEX);
1512
1513                                                 duck->signal_user_click(2).clear();
1514                                                 duck->signal_user_click(2).connect(
1515                                                         sigc::bind(
1516                                                                 sigc::bind(
1517                                                                         sigc::bind(
1518                                                                                 sigc::mem_fun(
1519                                                                                         *canvas_view,
1520                                                                                         &studio::CanvasView::popup_param_menu),
1521                                                                                 false),
1522                                                                         1.0f),
1523                                                                 synfigapp::ValueDesc(value_node,i)));
1524
1525                                                 if(param_desc)
1526                                                 {
1527                                                         if(!param_desc->get_origin().empty())
1528                                                         {
1529                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1530                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1531                                                                 duck->set_origin(last_duck());
1532 /*
1533                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1534                                                                 if(value.same_type_as(synfig::Point()))
1535                                                                         duck->set_origin(value.get(synfig::Point()));
1536 */
1537                                                         }
1538                                                 }
1539                                         }
1540                                         else
1541                                                 return false;
1542                                 }
1543                                 // else it's not a composite
1544                                 else
1545                                 {
1546                                         duck=new Duck(bline_point.get_vertex());
1547                                         if(i==first)
1548                                                 first_duck=duck;
1549                                         duck->set_transform_stack(transform_stack);
1550                                         duck->set_editable(false);
1551                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1552                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1553
1554                                         duck->set_type(Duck::TYPE_VERTEX);
1555                                         if(param_desc)
1556                                         {
1557                                                 if(!param_desc->get_origin().empty())
1558                                                 {
1559                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1560                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1561                                                                 duck->set_origin(last_duck());
1562 /*
1563                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1564                                                                 if(value.same_type_as(synfig::Point()))
1565                                                                         duck->set_origin(value.get(synfig::Point()));
1566 */
1567                                                 }
1568                                         }
1569                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1570                                         duck=add_similar_duck(duck);
1571 //                                      add_duck(duck);
1572                                 }
1573
1574                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1575                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1576                                         !param_desc)
1577                                 {
1578                                         etl::handle<Duck> width;
1579                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1580                                         {
1581                                                 width=last_duck();
1582                                                 width->set_origin(duck);
1583                                                 width->set_type(Duck::TYPE_WIDTH);
1584                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1585
1586                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1587                                                 if (param_desc)
1588                                                 {
1589                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1590                                                         if(value.same_type_as(synfig::Real()))
1591                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1592                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1593                                                         else
1594                                                                 width->set_scalar(0.5f);
1595                                                 }
1596                                                 // otherwise just present the raw unscaled width
1597                                                 else
1598                                                         width->set_scalar(0.5f);
1599                                         }
1600                                         else
1601                                                 synfig::error("Unable to add width duck!");
1602                                 }
1603
1604                                 // each bezier uses t2 of one point and t1 of the next
1605                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1606                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1607                                 if(bezier)
1608                                 {
1609                                         // Add the tangent1 duck
1610                                         if(composite_vertex_value_node)
1611                                         {
1612                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1613                                                         return false;
1614                                                 tduck=last_duck();
1615                                         }
1616                                         else
1617                                         {
1618                                                 tduck=new Duck(bline_point.get_tangent1());
1619                                                 tduck->set_transform_stack(transform_stack);
1620                                                 tduck->set_editable(false);
1621                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1622 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1623                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1624                                                 tduck=add_similar_duck(tduck);
1625 //                                              add_duck(duck);
1626                                         }
1627
1628                                         tduck->set_origin(duck);
1629                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1630                                         tduck->set_tangent(true);
1631
1632                                         bezier->p2=duck;
1633                                         bezier->c2=tduck;
1634
1635                                         bezier->signal_user_click(2).connect(
1636                                                 sigc::bind(
1637                                                         sigc::mem_fun(
1638                                                                 *canvas_view,
1639                                                                 &studio::CanvasView::popup_param_menu_bezier),
1640                                                         synfigapp::ValueDesc(value_node,i)));
1641
1642                                         duck->signal_user_click(2).clear();
1643                                         duck->signal_user_click(2).connect(
1644                                                 sigc::bind(
1645                                                         sigc::bind(
1646                                                                 sigc::bind(
1647                                                                         sigc::mem_fun(
1648                                                                                 *canvas_view,
1649                                                                                 &studio::CanvasView::popup_param_menu),
1650                                                                         false),
1651                                                                 1.0f),
1652                                                         synfigapp::ValueDesc(value_node,i)));
1653
1654                                         add_bezier(bezier);
1655                                         bezier=0;
1656                                 }
1657
1658                                 // don't start a new bezier for the last point in the line if we're not looped
1659                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1660                                         continue;
1661
1662                                 bezier=new Bezier();
1663
1664                                 // Add the tangent2 duck
1665                                 if(composite_vertex_value_node)
1666                                 {
1667                                         int i=bline_point.get_split_tangent_flag()?5:4;
1668                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1669                                                 return false;
1670                                         tduck=last_duck();
1671                                 }
1672                                 else
1673                                 {
1674                                         if(bline_point.get_split_tangent_flag())
1675                                                 tduck=new Duck(bline_point.get_tangent2());
1676                                         else
1677                                                 tduck=new Duck(bline_point.get_tangent1());
1678
1679                                         tduck->set_transform_stack(transform_stack);
1680                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1681                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1682                                         tduck->set_editable(false);
1683                                         tduck=add_similar_duck(tduck);
1684 //                                      add_duck(duck);
1685                                         if(param_desc)
1686                                         {
1687                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1688                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1689                                                                 duck->set_origin(last_duck());
1690 /*
1691                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1692                                                                 if(value.same_type_as(synfig::Point()))
1693                                                                         duck->set_origin(value.get(synfig::Point()));
1694 */
1695 //                                              if(!param_desc->get_origin().empty())
1696 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1697                                         }
1698                                         duck->signal_user_click(2).clear();
1699                                         duck->signal_user_click(2).connect(
1700                                                 sigc::bind(
1701                                                         sigc::bind(
1702                                                                 sigc::bind(
1703                                                                         sigc::mem_fun(
1704                                                                                 *canvas_view,
1705                                                                                 &studio::CanvasView::popup_param_menu),
1706                                                                         false),
1707                                                                 1.0f),
1708                                                         synfigapp::ValueDesc(value_node,i)));
1709
1710                                 }
1711
1712                                 tduck->set_origin(duck);
1713                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1714                                 tduck->set_tangent(true);
1715
1716                                 bezier->p1=duck;
1717                                 bezier->c1=tduck;
1718                         }
1719
1720                         // Loop if necessary
1721                         if(bezier && value_node->get_loop())
1722                         {
1723                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1724
1725                                 ValueNode_Composite::Handle composite_vertex_value_node(
1726                                         ValueNode_Composite::Handle::cast_dynamic(
1727                                                 value_node->get_link(first)));
1728
1729                                 // Add the vertex duck
1730                                 duck=first_duck;
1731
1732                                 // Add the tangent1 duck
1733                                 if(composite_vertex_value_node)
1734                                 {
1735                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1736                                                 return false;
1737                                         tduck=last_duck();
1738                                 }
1739                                 else
1740                                 {
1741                                         tduck=new Duck(bline_point.get_tangent1());
1742                                         tduck->set_transform_stack(transform_stack);
1743                                         tduck->set_editable(false);
1744                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1745                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1746                                         tduck=add_similar_duck(tduck);
1747                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1748                                         //add_duck(duck);
1749                                 }
1750
1751                                 tduck->set_origin(duck);
1752                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1753                                 tduck->set_tangent(true);
1754
1755                                 bezier->p2=duck;
1756                                 bezier->c2=tduck;
1757
1758                                 bezier->signal_user_click(2).connect(
1759                                         sigc::bind(
1760                                                 sigc::mem_fun(
1761                                                         *canvas_view,
1762                                                         &studio::CanvasView::popup_param_menu_bezier),
1763                                                 synfigapp::ValueDesc(value_node,first)));
1764
1765                                 duck->signal_user_click(2).clear();
1766                                 duck->signal_user_click(2).connect(
1767                                         sigc::bind(
1768                                                 sigc::bind(
1769                                                         sigc::bind(
1770                                                                 sigc::mem_fun(
1771                                                                         *canvas_view,
1772                                                                         &studio::CanvasView::popup_param_menu),
1773                                                                 false),
1774                                                         1.0f),
1775                                                 synfigapp::ValueDesc(value_node,first)));
1776
1777                                 add_bezier(bezier);
1778                                 bezier=0;
1779                         }
1780                         return true;
1781                 }
1782                 else // Check for DynamicList
1783                 if(value_desc.is_value_node() &&
1784                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1785                 {
1786                         ValueNode_DynamicList::Handle value_node;
1787                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1788                         int i;
1789
1790                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1791                         {
1792                                 Bezier bezier;
1793                                 etl::handle<Duck> first_duck, duck;
1794                                 int first = -1;
1795                                 for(i=0;i<value_node->link_count();i++)
1796                                 {
1797                                         if(!value_node->list[i].status_at_time(get_time()))
1798                                                 continue;
1799                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1800                                                 return false;
1801                                         duck = last_duck();
1802
1803                                         // remember the index of the first vertex we didn't skip
1804                                         if (first == -1)
1805                                         {
1806                                                 first = i;
1807                                                 first_duck = duck;
1808                                         }
1809
1810                                         if(param_desc)
1811                                         {
1812                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1813                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1814                                                                 duck->set_origin(last_duck());
1815 /*
1816                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1817                                                                 if(value.same_type_as(synfig::Point()))
1818                                                                         duck->set_origin(value.get(synfig::Point()));
1819 */
1820 //                                              if(!param_desc->get_origin().empty())
1821 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1822                                         }
1823                                         duck->set_type(Duck::TYPE_VERTEX);
1824                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1825                                         bezier.p2=bezier.c2=duck;
1826
1827                                         if (first != i)
1828                                         {
1829                                                 handle<Bezier> bezier_(new Bezier());
1830                                                 bezier_->p1=bezier.p1;
1831                                                 bezier_->c1=bezier.c1;
1832                                                 bezier_->p2=bezier.p2;
1833                                                 bezier_->c2=bezier.c2;
1834                                                 add_bezier(bezier_);
1835                                                 last_bezier()->signal_user_click(2).connect(
1836                                                         sigc::bind(
1837                                                                 sigc::mem_fun(
1838                                                                         *canvas_view,
1839                                                                         &studio::CanvasView::popup_param_menu_bezier),
1840                                                                 synfigapp::ValueDesc(value_node,i)));
1841                                         }
1842                                 }
1843
1844                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1845                                 {
1846                                         duck = first_duck;
1847
1848                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1849                                         bezier.p2=bezier.c2=duck;
1850
1851                                         handle<Bezier> bezier_(new Bezier());
1852                                         bezier_->p1=bezier.p1;
1853                                         bezier_->c1=bezier.c1;
1854                                         bezier_->p2=bezier.p2;
1855                                         bezier_->c2=bezier.c2;
1856                                         add_bezier(bezier_);
1857                                         last_bezier()->signal_user_click(2).connect(
1858                                                 sigc::bind(
1859                                                         sigc::mem_fun(
1860                                                                 *canvas_view,
1861                                                                 &studio::CanvasView::popup_param_menu_bezier),
1862                                                         synfigapp::ValueDesc(value_node,first)));
1863                                 }
1864                         }
1865                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1866                         {
1867                                 for(i=0;i<value_node->link_count();i++)
1868                                 {
1869                                         if(!value_node->list[i].status_at_time(get_time()))
1870                                                 continue;
1871                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1872                                                 return false;
1873                                 }
1874                         }
1875                         else
1876                                 return false;
1877                 }
1878                 else
1879                 {
1880                         // WRITEME
1881                 }
1882
1883                 return true;
1884         }
1885
1886         break;
1887         default:
1888                 break;
1889         }
1890         return false;
1891 }