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                                         int vertex_amount_index(bline_vertex->get_link_index_from_name("amount"));
 561
 562                                         ValueNode::Handle t1_value_node(value_node_composite->get_link(t1_index));
 563                                         ValueNode::Handle t2_value_node(value_node_composite->get_link(t2_index));
 564                                         ValueNode::Handle width_value_node(value_node_composite->get_link(width_index));
 565                                         ValueNode::Handle amount_value_node(bline_vertex->get_link(vertex_amount_index));
 566
 567                                         ValueNode_BLineCalcTangent::Handle bline_tangent_1(ValueNode_BLineCalcTangent::Handle::cast_dynamic(t1_value_node));
 568                                         ValueNode_BLineCalcTangent::Handle bline_tangent_2(ValueNode_BLineCalcTangent::Handle::cast_dynamic(t2_value_node));
 569                                         ValueNode_BLineCalcWidth::Handle bline_width(ValueNode_BLineCalcWidth::Handle::cast_dynamic(width_value_node));
 570
 571                                         if (bline_tangent_1 || bline_tangent_2 || bline_width)
 572                                         {
 573                                                 synfig::Real radius = 0.0;
 574                                                 ValueNode_BLine::Handle bline(ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link(bline_vertex->get_link_index_from_name("bline"))));
 575                                                 Real amount = synfig::find_closest_point((*bline)(time), duck->get_point(), radius, bline->get_loop());
 576
 577                                                 // we need to update the position of the tangent ducks - but how do we find these ducks?
 578                                                 // this is a brute force search - but is there a better way to do it?
 579                                                 if (bline_tangent_1 &&
 580                                                         bline_tangent_1->get_link(bline_tangent_1->get_link_index_from_name("amount")) == amount_value_node)
 581                                                 {
 582                                                         Vector tangent = (*bline_tangent_1)(time, amount).get(Vector());
 583                                                         DuckList::iterator iter;
 584                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 585                                                                 if ((*iter)->get_value_desc().get_value_node() == t1_value_node)
 586                                                                         (*iter)->set_point(tangent);
 587                                                 }
 588
 589                                                 if (bline_tangent_2 &&
 590                                                         bline_tangent_2->get_link(bline_tangent_2->get_link_index_from_name("amount")) == amount_value_node)
 591                                                 {
 592                                                         Vector tangent = (*bline_tangent_2)(time, amount).get(Vector());
 593                                                         DuckList::iterator iter;
 594                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 595                                                                 if ((*iter)->get_value_desc().get_value_node() == t2_value_node)
 596                                                                         (*iter)->set_point(tangent);
 597                                                 }
 598
 599                                                 if (bline_width &&
 600                                                         bline_width->get_link(bline_width->get_link_index_from_name("amount")) == amount_value_node)
 601                                                 {
 602                                                         Real width = (*bline_width)(time, amount).get(Real());
 603                                                         DuckList::iterator iter;
 604                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 605                                                                 if ((*iter)->get_value_desc().get_value_node() == width_value_node)
 606                                                                         (*iter)->set_point(Point(width, 0));
 607                                                 }
 608                                         }
 609                                 }
 610                         }
 611                 }
 612         }
 613
 614         last_translate_=vect;
 615 }
 616
 617 void
 618 Duckmatic::signal_edited_selected_ducks()
 619 {
 620         const DuckList ducks(get_selected_ducks());
 621         DuckList::const_iterator iter;
 622
 623         synfig::GUIDSet old_set(selected_ducks);
 624
 625         // If we have more than 20 things to move, then display
 626         // something to explain that it may take a moment
 627         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 628
 629         // Go ahead and call everyone's signals
 630         for(iter=ducks.begin();iter!=ducks.end();++iter)
 631         {
 632                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 633                 {
 634                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 635                         {
 636                                 selected_ducks=old_set;
 637                                 throw String("Bad edit");
 638                         }
 639                 }
 640                 else if (App::restrict_radius_ducks &&
 641                                  (*iter)->is_radius())
 642                 {
 643                         Point point((*iter)->get_point());
 644                         bool changed = false;
 645
 646                         if (point[0] < 0)
 647                         {
 648                                 point[0] = 0;
 649                                 changed = true;
 650                         }
 651                         if (point[1] < 0)
 652                         {
 653                                 point[1] = 0;
 654                                 changed = true;
 655                         }
 656
 657                         if (changed) (*iter)->set_point(point);
 658
 659                         if(!(*iter)->signal_edited()(point))
 660                         {
 661                                 selected_ducks=old_set;
 662                                 throw String("Bad edit");
 663                         }
 664                 }
 665                 else
 666                 {
 667                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 668                         {
 669                                 selected_ducks=old_set;
 670                                 throw String("Bad edit");
 671                         }
 672                 }
 673         }
 674         selected_ducks=old_set;
 675 }
 676
 677 void
 678 Duckmatic::signal_user_click_selected_ducks(int button)
 679 {
 680         const DuckList ducks(get_selected_ducks());
 681         DuckList::const_iterator iter;
 682
 683         for(iter=ducks.begin();iter!=ducks.end();++iter)
 684         {
 685                 (*iter)->signal_user_click(button)();
 686         }
 687 }
 688
 689 void
 690 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 691 {
 692         //if(!duck_map.count(duck->get_guid()))
 693         {
 694                 if(duck_data_share_map.count(duck->get_data_guid()))
 695                 {
 696                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 697                 }
 698                 else
 699                 {
 700                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 701                         duck->set_shared_point(point);
 702                         duck_data_share_map[duck->get_data_guid()]=point;
 703                 }
 704
 705                 duck_map.insert(duck);
 706         }
 707
 708         last_duck_guid=duck->get_guid();
 709 }
 710
 711 void
 712 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 713 {
 714         bezier_list_.push_back(bezier);
 715 }
 716
 717 void
 718 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 719 {
 720         assert(stroke_point_list);
 721
 722         std::list<etl::handle<Stroke> >::iterator iter;
 723
 724         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 725         {
 726                 if((*iter)->stroke_data==stroke_point_list)
 727                         return;
 728         }
 729
 730         etl::handle<Stroke> stroke(new Stroke());
 731
 732         stroke->stroke_data=stroke_point_list;
 733         stroke->color=color;
 734
 735         stroke_list_.push_back(stroke);
 736 }
 737
 738 void
 739 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 740 {
 741         add_stroke(stroke_point_list,color);
 742         persistent_stroke_list_.push_back(stroke_list_.back());
 743 }
 744
 745 void
 746 Duckmatic::clear_persistent_strokes()
 747 {
 748         persistent_stroke_list_.clear();
 749 }
 750
 751 void
 752 Duckmatic::set_show_persistent_strokes(bool x)
 753 {
 754         if(x!=show_persistent_strokes)
 755         {
 756                 show_persistent_strokes=x;
 757                 if(x)
 758                         stroke_list_=persistent_stroke_list_;
 759                 else
 760                         stroke_list_.clear();
 761         }
 762 }
 763
 764 void
 765 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 766 {
 767         duck_map.erase(duck->get_guid());
 768 }
 769
 770 etl::handle<Duckmatic::Duck>
 771 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 772 {
 773         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 774         if(iter!=duck_map.end())
 775                 return iter->second;
 776         return 0;
 777
 778 /*      std::list<handle<Duck> >::reverse_iterator iter;
 779
 780         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 781         {
 782                 if(*iter!=duck && **iter==*duck)
 783                 {
 784                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 785                         return *iter;
 786                 }
 787         }
 788         return 0;
 789 */
 790 }
 791
 792 etl::handle<Duckmatic::Duck>
 793 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 794 {
 795         etl::handle<Duck> similar(find_similar_duck(duck));
 796         if(!similar)
 797         {
 798                 add_duck(duck);
 799                 return duck;
 800         }
 801         return similar;
 802 }
 803
 804 void
 805 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 806 {
 807         std::list<handle<Bezier> >::iterator iter;
 808
 809         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 810         {
 811                 if(*iter==bezier)
 812                 {
 813                         bezier_list_.erase(iter);
 814                         return;
 815                 }
 816         }
 817         synfig::warning("Unable to find bezier to erase!");
 818 }
 819
 820 etl::handle<Duckmatic::Duck>
 821 Duckmatic::last_duck()const
 822 {
 823         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 824         if(iter!=duck_map.end())
 825                 return iter->second;
 826         return 0;
 827 }
 828
 829 etl::handle<Duckmatic::Bezier>
 830 Duckmatic::last_bezier()const
 831 {
 832         return bezier_list_.back();
 833 }
 834
 835 etl::handle<Duckmatic::Duck>
 836 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 837 {
 838         if(radius==0)radius=10000000;
 839
 840         if(type==Duck::TYPE_DEFAULT)
 841                 type=get_type_mask();
 842
 843         Real closest(10000000);
 844         etl::handle<Duck> ret;
 845
 846         DuckMap::const_iterator iter;
 847
 848         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 849         {
 850                 const Duck::Handle& duck(iter->second);
 851
 852                 if(duck->get_ignore())
 853                         continue;
 854                 Real dist((duck->get_trans_point()-point).mag_squared());
 855
 856                 if(duck->get_type()&Duck::TYPE_VERTEX)
 857                         dist*=1.0001;
 858                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 859                         dist*=0.9999;
 860
 861                 if(dist<=closest && !( duck->get_type() && (!(type & duck->get_type())) ) )
 862                 {
 863                         {
 864                                 closest=dist;
 865                                 ret=duck;
 866                         }
 867                 }
 868         }
 869
 870         if(radius==0 || closest<radius*radius)
 871                 return ret;
 872
 873         return 0;
 874 }
 875
 876 etl::handle<Duckmatic::Bezier>
 877 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 878 {
 879         return find_bezier(point,radius,radius,location);
 880 }
 881
 882 etl::handle<Duckmatic::Bezier>
 883 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 884 {
 885         if(radius==0)radius=10000000;
 886         Real closest(10000000);
 887         etl::handle<Bezier> ret;
 888
 889         bezier<Point>   curve;
 890
 891         Real    d,step;
 892         float   time = 0;
 893         float   best_time = 0;
 894
 895         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 896         {
 897                 curve[0] = (*iter)->p1->get_trans_point();
 898                 curve[1] = (*iter)->c1->get_trans_point();
 899                 curve[2] = (*iter)->c2->get_trans_point();
 900                 curve[3] = (*iter)->p2->get_trans_point();
 901                 curve.sync();
 902
 903 #if 0
 904                 // I don't know why this doesn't work
 905                 time=curve.find_closest(pos,6);
 906                 d=((curve(time)-pos).mag_squared());
 907
 908 #else
 909                 //set the step size based on the size of the picture
 910                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 911
 912                 step = d/(2*scale); //want to make the distance between lines happy
 913
 914                 step = max(step,0.01); //100 samples should be plenty
 915                 step = min(step,0.1); //10 is minimum
 916
 917                 d = find_closest(curve,pos,step,&closest,&time);
 918 #endif
 919
 920                 if(d < closest)
 921                 {
 922                         closest = d;
 923                         ret = *iter;
 924                         best_time=time;
 925                 }
 926         }
 927
 928         if(closest < radius*radius)
 929         {
 930                 if(location)
 931                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 932
 933                 return ret;
 934         }
 935
 936         return 0;
 937 }
 938
 939 bool
 940 Duckmatic::save_sketch(const synfig::String& filename)const
 941 {
 942         ChangeLocale change_locale(LC_NUMERIC, "C");
 943         std::ofstream file(filename.c_str());
 944
 945         if(!file)return false;
 946
 947         file<<"SKETCH"<<endl;
 948
 949         std::list<etl::handle<Stroke> >::const_iterator iter;
 950
 951         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 952         {
 953                 file<<"C "
 954                         <<(*iter)->color.get_r()<<' '
 955                         <<(*iter)->color.get_g()<<' '
 956                         <<(*iter)->color.get_b()
 957                 <<endl;
 958                 std::list<synfig::Point>::const_iterator viter;
 959                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 960                 {
 961                         file<<"V "
 962                                 <<(*viter)[0]<<' '
 963                                 <<(*viter)[1]
 964                         <<endl;
 965                 }
 966         }
 967         if(!file)return false;
 968         sketch_filename_=filename;
 969         signal_sketch_saved_();
 970         return true;
 971 }
 972
 973 bool
 974 Duckmatic::load_sketch(const synfig::String& filename)
 975 {
 976         ChangeLocale change_locale(LC_NUMERIC, "C");
 977         std::ifstream file(filename.c_str());
 978
 979         if(!file)
 980                 return false;
 981
 982         std::string line;
 983         getline(file,line);
 984
 985         if(line!="SKETCH")
 986         {
 987                 synfig::error("Not a sketch");
 988                 return false;
 989         }
 990
 991         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 992
 993         while(file)
 994         {
 995                 getline(file,line);
 996
 997                 if(line.empty())
 998                         continue;
 999
1000                 switch(line[0])
1001                 {
1002                 case 'C':
1003                 case 'c':
1004                         {
1005                                 stroke_data.spawn();
1006                                 float r,g,b;
1007                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
1008                                 {
1009                                         synfig::warning("Bad color line \"%s\"",line.c_str());
1010                                         r=0;g=0;b=0;
1011                                 }
1012                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
1013                         }
1014                         break;
1015                 case 'V':
1016                 case 'v':
1017                         if(!stroke_data)
1018                         {
1019                                 stroke_data.spawn();
1020                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
1021                         }
1022                         float x,y;
1023                         if(!strscanf(line,"V %f %f",&x, &y))
1024                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
1025                         else
1026                                 stroke_data->push_back(synfig::Vector(x,y));
1027                         break;
1028                 default:
1029                         synfig::warning("Unexpected sketch token '%c'",line[0]);
1030                         break;
1031                 }
1032         }
1033
1034         sketch_filename_=filename;
1035         return true;
1036 }
1037
1038 Duckmatic::Push::Push(Duckmatic *duckmatic_):
1039         duckmatic_(duckmatic_)
1040 {
1041         duck_map=duckmatic_->duck_map;
1042         bezier_list_=duckmatic_->bezier_list_;
1043         duck_data_share_map=duckmatic_->duck_data_share_map;
1044         stroke_list_=duckmatic_->stroke_list_;
1045         duck_dragger_=duckmatic_->duck_dragger_;
1046         needs_restore=true;
1047 }
1048
1049 Duckmatic::Push::~Push()
1050 {
1051         if(needs_restore)
1052                 restore();
1053 }
1054
1055 void
1056 Duckmatic::Push::restore()
1057 {
1058         duckmatic_->duck_map=duck_map;
1059         duckmatic_->bezier_list_=bezier_list_;
1060         duckmatic_->duck_data_share_map=duck_data_share_map;
1061         duckmatic_->stroke_list_=stroke_list_;
1062         duckmatic_->duck_dragger_=duck_dragger_;
1063         needs_restore=false;
1064 }
1065
1066 inline String guid_string(const synfigapp::ValueDesc& x)
1067 {
1068         if(x.parent_is_layer_param())
1069                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1070         //if(x.is_value_node())
1071                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1072 }
1073
1074 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1075 {
1076         synfig::GUID ret(0);
1077
1078         if(x.parent_is_layer_param())
1079         {
1080                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1081         }
1082         else
1083         {
1084                 ret=x.get_value_node()->get_guid();
1085         }
1086
1087         ret^=transform_stack.get_guid();
1088         return ret;
1089 }
1090
1091 /*
1092 Duck::Handle
1093 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)
1094 {
1095         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1096         etl::handle<Duck> duck=new Duck();
1097
1098         return duck;
1099 }
1100 */
1101
1102 bool
1103 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)
1104 {
1105         ValueBase::Type type=value_desc.get_value_type();
1106 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1107         switch(type)
1108         {
1109         case ValueBase::TYPE_REAL:
1110
1111                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1112                 {
1113                         etl::handle<Duck> duck=new Duck();
1114                         duck->set_transform_stack(transform_stack);
1115                         duck->set_radius(true);
1116                         duck->set_type(Duck::TYPE_RADIUS);
1117
1118                         // put the duck on the right hand side of the center
1119                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1120                         duck->set_name(guid_string(value_desc));
1121                         if(value_desc.is_value_node())
1122                         {
1123                                 // If the ValueNode can be directly manipulated,
1124                                 // then set it as so.
1125                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1126                         }
1127                         else
1128                         {
1129                                 duck->set_editable(true);
1130                         }
1131
1132                         if(param_desc && param_desc!=REAL_COOKIE)
1133                         {
1134                                 if(!param_desc->get_origin().empty())
1135                                 {
1136                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1137                                         /*
1138                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1139                                         */
1140                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1141                                         duck->set_origin(last_duck());
1142                                 }
1143                                 duck->set_scalar(param_desc->get_scalar());
1144                         }
1145
1146                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1147                         duck->signal_edited().connect(
1148                                 sigc::bind(
1149                                         sigc::mem_fun(
1150                                                 *canvas_view,
1151                                                 &studio::CanvasView::on_duck_changed),
1152                                         value_desc));
1153                         duck->set_value_desc(value_desc);
1154
1155                         duck->signal_user_click(2).connect(
1156                                 sigc::bind(
1157                                         sigc::bind(
1158                                                 sigc::bind(
1159                                                         sigc::mem_fun(
1160                                                                 *canvas_view,
1161                                                                 &studio::CanvasView::popup_param_menu),
1162                                                         false),
1163                                                 0.0f),
1164                                         value_desc));
1165
1166                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1167
1168                         add_duck(duck);
1169
1170                         return true;
1171                 }
1172                 break;
1173
1174         case ValueBase::TYPE_ANGLE:
1175
1176                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1177                 {
1178                         etl::handle<Duck> duck=new Duck();
1179                         duck->set_type(Duck::TYPE_ANGLE);
1180                         duck->set_transform_stack(transform_stack);
1181                         synfig::Angle angle;
1182
1183                         angle=value_desc.get_value(get_time()).get(Angle());
1184                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1185                         duck->set_name(guid_string(value_desc));
1186                         if(value_desc.is_value_node())
1187                         {
1188                                 ValueNode::Handle value_node=value_desc.get_value_node();
1189                                 //duck->set_name(strprintf("%x",value_node.get()));
1190
1191                                 // If the ValueNode can be directly manipulated,
1192                                 // then set it as so.
1193                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1194                         }
1195                         else
1196                         {
1197                                 //angle=(value_desc.get_value().get(Angle()));
1198                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1199                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1200                                 duck->set_editable(true);
1201                         }
1202
1203                         if(param_desc && param_desc!=REAL_COOKIE)
1204                         {
1205                                 if(!param_desc->get_origin().empty())
1206                                 {
1207                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1208                                         /*
1209                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1210                                         */
1211                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1212                                         duck->set_origin(last_duck());
1213                                 }
1214                                 duck->set_scalar(param_desc->get_scalar());
1215                         }
1216
1217                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1218                         duck->signal_edited_angle().clear();
1219                         duck->signal_edited_angle().connect(
1220                                 sigc::bind(
1221                                         sigc::mem_fun(
1222                                                 *canvas_view,
1223                                                 &studio::CanvasView::on_duck_angle_changed),
1224                                         value_desc));
1225                         duck->set_value_desc(value_desc);
1226
1227                         duck->signal_user_click(2).connect(
1228                                 sigc::bind(
1229                                         sigc::bind(
1230                                                 sigc::bind(
1231                                                         sigc::mem_fun(
1232                                                                 *canvas_view,
1233                                                                 &studio::CanvasView::popup_param_menu),
1234                                                         false),
1235                                                 0.0f),
1236                                         value_desc));
1237                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1238
1239                         add_duck(duck);
1240
1241                         return true;
1242                 }
1243                 break;
1244
1245         case ValueBase::TYPE_VECTOR:
1246                 {
1247                         etl::handle<Duck> duck=new Duck();
1248                         duck->set_transform_stack(transform_stack);
1249
1250                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1251                         duck->set_name(guid_string(value_desc));
1252                         if(value_desc.is_value_node())
1253                         {
1254                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1255
1256                                 // If the ValueNode can be directly manipulated,
1257                                 // then set it as so.
1258                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1259                         }
1260                         else
1261                         {
1262                                 //duck->set_point(value_desc.get_value().get(Point()));
1263                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1264                                 duck->set_editable(true);
1265                         }
1266
1267                         // If we were passed a parameter description
1268                         if(param_desc)
1269                         {
1270                                 if(!param_desc->get_connect().empty())
1271                                 {
1272                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1273                                         Duck::Handle connect_duck;
1274                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1275                                         {
1276                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1277                                         }
1278                                         else
1279                                         {
1280                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1281                                                 connect_duck=last_duck();
1282                                         }
1283                                         duck->set_connect_duck(connect_duck);
1284                                 }
1285                                 if(!param_desc->get_box().empty())
1286                                 {
1287                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1288                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1289                                         duck->set_box_duck(last_duck());
1290                                 }
1291
1292                                 // If we have an origin
1293                                 if(!param_desc->get_origin().empty())
1294                                 {
1295                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1296                                         /*
1297                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1298                                         */
1299                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1300                                         duck->set_origin(last_duck());
1301                                         duck->set_type(Duck::TYPE_VERTEX);
1302                                 }
1303                                 else
1304                                         duck->set_type(Duck::TYPE_POSITION);
1305
1306                                 duck->set_scalar(param_desc->get_scalar());
1307                         }
1308                         else
1309                                 duck->set_type(Duck::TYPE_POSITION);
1310
1311                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1312                         duck->signal_edited().connect(
1313                                 sigc::bind(
1314                                         sigc::mem_fun(
1315                                                 *canvas_view,
1316                                                 &studio::CanvasView::on_duck_changed),
1317                                         value_desc));
1318                         duck->set_value_desc(value_desc);
1319
1320                         duck->signal_user_click(2).connect(
1321                                 sigc::bind(
1322                                         sigc::bind(
1323                                                 sigc::bind(
1324                                                         sigc::mem_fun(
1325                                                                 *canvas_view,
1326                                                                 &studio::CanvasView::popup_param_menu),
1327                                                         false),
1328                                                 1.0f),
1329                                         value_desc));
1330                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1331                         add_duck(duck);
1332
1333                         return true;
1334                 }
1335                 break;
1336         case ValueBase::TYPE_SEGMENT:
1337                 {
1338                         etl::handle<Bezier> bezier(new Bezier());
1339                         ValueNode_Composite::Handle value_node;
1340
1341                         if(value_desc.is_value_node() &&
1342                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1343                         {
1344                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1345                                         return false;
1346                                 bezier->p1=last_duck();
1347                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1348                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1349                                         return false;
1350                                 bezier->c1=last_duck();
1351                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1352                                 bezier->c1->set_origin(bezier->p1);
1353                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1354                                 bezier->c1->set_tangent(true);
1355
1356                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1357                                         return false;
1358                                 bezier->p2=last_duck();
1359                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1360                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1361                                         return false;
1362                                 bezier->c2=last_duck();
1363                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1364                                 bezier->c2->set_origin(bezier->p2);
1365                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1366                                 bezier->c2->set_tangent(true);
1367
1368                                 bezier->signal_user_click(2).connect(
1369                                         sigc::bind(
1370                                                 sigc::mem_fun(
1371                                                         *canvas_view,
1372                                                         &studio::CanvasView::popup_param_menu_bezier),
1373                                                 value_desc));
1374
1375                                 add_bezier(bezier);
1376                         }
1377                         else if(value_desc.get_value().is_valid())
1378                         {
1379                                 Segment segment=value_desc.get_value();
1380                                 etl::handle<Duck> duck_p,duck_c;
1381                                 synfig::String name;
1382                                 if(param_desc)
1383                                 {
1384                                         name=param_desc->get_local_name();
1385                                 }
1386                                 else
1387                                 {
1388                                         name=guid_string(value_desc);
1389                                 }
1390
1391                                 duck_p=new Duck(segment.p1);
1392                                 duck_p->set_name(name+".P1");
1393                                 duck_p->set_type(Duck::TYPE_VERTEX);
1394                                 add_duck(duck_p);
1395
1396                                 duck_c=new Duck(segment.t1);
1397                                 duck_c->set_name(name+".T1");
1398                                 duck_c->set_type(Duck::TYPE_TANGENT);
1399                                 add_duck(duck_c);
1400                                 duck_c->set_origin(duck_p);
1401                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1402                                 duck_c->set_tangent(true);
1403
1404                                 bezier->p1=duck_p;
1405                                 bezier->c1=duck_c;
1406
1407                                 duck_p=new Duck(segment.p2);
1408                                 duck_p->set_name(name+".P2");
1409                                 duck_p->set_type(Duck::TYPE_VERTEX);
1410                                 add_duck(duck_p);
1411
1412                                 duck_c=new Duck(segment.t2);
1413                                 duck_c->set_type(Duck::TYPE_TANGENT);
1414                                 duck_c->set_name(name+".T2");
1415                                 add_duck(duck_c);
1416                                 duck_c->set_origin(duck_p);
1417                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1418                                 duck_c->set_tangent(true);
1419
1420                                 bezier->p2=duck_p;
1421                                 bezier->c2=duck_c;
1422                                 add_bezier(bezier);
1423                         }
1424
1425                         return true;
1426                 }
1427                 break;
1428         case ValueBase::TYPE_BLINEPOINT:
1429         {
1430
1431                 if(value_desc.is_value_node() &&
1432                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1433                 {
1434                         ValueNode_Composite::Handle value_node;
1435                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1436
1437                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1438                                 return false;
1439                         etl::handle<Duck> vertex_duck(last_duck());
1440                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1441                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1442                                 return false;
1443                         etl::handle<Duck> t1_duck(last_duck());
1444
1445                         t1_duck->set_origin(vertex_duck);
1446                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1447                         t1_duck->set_tangent(true);
1448
1449                         etl::handle<Duck> t2_duck;
1450
1451                         // If the tangents are split
1452                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1453                         {
1454                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1455                                         return false;
1456                                 t2_duck=last_duck();
1457                                 t2_duck->set_origin(vertex_duck);
1458                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1459                                 t2_duck->set_tangent(true);
1460                         }
1461                         else
1462                         {
1463                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1464                                         return false;
1465                                 t2_duck=last_duck();
1466                                 t2_duck->set_origin(vertex_duck);
1467                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1468                                 t2_duck->set_tangent(true);
1469                         }
1470                         return true;
1471                 }
1472
1473         }
1474         break;
1475         case ValueBase::TYPE_LIST:
1476         {
1477                 // Check for BLine
1478                 if (value_desc.is_value_node() &&
1479                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1480                 {
1481                         ValueNode_BLine::Handle value_node;
1482                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1483
1484                         int i,first=-1;
1485
1486                         etl::handle<Bezier> bezier;
1487                         etl::handle<Duck> first_duck;
1488                         etl::handle<Duck> duck, tduck;
1489
1490                         for (i = 0; i < value_node->link_count(); i++)
1491                         {
1492                                 float amount(value_node->list[i].amount_at_time(get_time()));
1493
1494                                 // skip vertices that aren't fully on
1495                                 if (amount < 0.9999f)
1496                                         continue;
1497
1498                                 // remember the index of the first vertex we didn't skip
1499                                 if (first == -1)
1500                                         first = i;
1501
1502                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1503
1504                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1505                                 ValueNode_Composite::Handle composite_vertex_value_node(
1506                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1507
1508                                 // add the vertex duck - it's a composite
1509                                 if(composite_vertex_value_node)
1510                                 {
1511                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1512                                         {
1513                                                 duck=last_duck();
1514                                                 if(i==first)
1515                                                         first_duck=duck;
1516                                                 duck->set_type(Duck::TYPE_VERTEX);
1517
1518                                                 duck->signal_user_click(2).clear();
1519                                                 duck->signal_user_click(2).connect(
1520                                                         sigc::bind(
1521                                                                 sigc::bind(
1522                                                                         sigc::bind(
1523                                                                                 sigc::mem_fun(
1524                                                                                         *canvas_view,
1525                                                                                         &studio::CanvasView::popup_param_menu),
1526                                                                                 false),
1527                                                                         1.0f),
1528                                                                 synfigapp::ValueDesc(value_node,i)));
1529
1530                                                 if(param_desc)
1531                                                 {
1532                                                         if(!param_desc->get_origin().empty())
1533                                                         {
1534                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1535                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1536                                                                 duck->set_origin(last_duck());
1537 /*
1538                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1539                                                                 if(value.same_type_as(synfig::Point()))
1540                                                                         duck->set_origin(value.get(synfig::Point()));
1541 */
1542                                                         }
1543                                                 }
1544                                         }
1545                                         else
1546                                                 return false;
1547                                 }
1548                                 // else it's not a composite
1549                                 else
1550                                 {
1551                                         duck=new Duck(bline_point.get_vertex());
1552                                         if(i==first)
1553                                                 first_duck=duck;
1554                                         duck->set_transform_stack(transform_stack);
1555                                         duck->set_editable(false);
1556                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1557                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1558
1559                                         duck->set_type(Duck::TYPE_VERTEX);
1560                                         if(param_desc)
1561                                         {
1562                                                 if(!param_desc->get_origin().empty())
1563                                                 {
1564                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1565                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1566                                                                 duck->set_origin(last_duck());
1567 /*
1568                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1569                                                                 if(value.same_type_as(synfig::Point()))
1570                                                                         duck->set_origin(value.get(synfig::Point()));
1571 */
1572                                                 }
1573                                         }
1574                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1575                                         duck=add_similar_duck(duck);
1576 //                                      add_duck(duck);
1577                                 }
1578
1579                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1580                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1581                                         !param_desc)
1582                                 {
1583                                         etl::handle<Duck> width;
1584                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1585                                         {
1586                                                 width=last_duck();
1587                                                 width->set_origin(duck);
1588                                                 width->set_type(Duck::TYPE_WIDTH);
1589                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1590
1591                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1592                                                 if (param_desc)
1593                                                 {
1594                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1595                                                         if(value.same_type_as(synfig::Real()))
1596                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1597                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1598                                                         else
1599                                                                 width->set_scalar(0.5f);
1600                                                 }
1601                                                 // otherwise just present the raw unscaled width
1602                                                 else
1603                                                         width->set_scalar(0.5f);
1604                                         }
1605                                         else
1606                                                 synfig::error("Unable to add width duck!");
1607                                 }
1608
1609                                 // each bezier uses t2 of one point and t1 of the next
1610                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1611                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1612                                 if(bezier)
1613                                 {
1614                                         // Add the tangent1 duck
1615                                         if(composite_vertex_value_node)
1616                                         {
1617                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1618                                                         return false;
1619                                                 tduck=last_duck();
1620                                         }
1621                                         else
1622                                         {
1623                                                 tduck=new Duck(bline_point.get_tangent1());
1624                                                 tduck->set_transform_stack(transform_stack);
1625                                                 tduck->set_editable(false);
1626                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1627 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1628                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1629                                                 tduck=add_similar_duck(tduck);
1630 //                                              add_duck(duck);
1631                                         }
1632
1633                                         tduck->set_origin(duck);
1634                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1635                                         tduck->set_tangent(true);
1636
1637                                         bezier->p2=duck;
1638                                         bezier->c2=tduck;
1639
1640                                         bezier->signal_user_click(2).connect(
1641                                                 sigc::bind(
1642                                                         sigc::mem_fun(
1643                                                                 *canvas_view,
1644                                                                 &studio::CanvasView::popup_param_menu_bezier),
1645                                                         synfigapp::ValueDesc(value_node,i)));
1646
1647                                         duck->signal_user_click(2).clear();
1648                                         duck->signal_user_click(2).connect(
1649                                                 sigc::bind(
1650                                                         sigc::bind(
1651                                                                 sigc::bind(
1652                                                                         sigc::mem_fun(
1653                                                                                 *canvas_view,
1654                                                                                 &studio::CanvasView::popup_param_menu),
1655                                                                         false),
1656                                                                 1.0f),
1657                                                         synfigapp::ValueDesc(value_node,i)));
1658
1659                                         add_bezier(bezier);
1660                                         bezier=0;
1661                                 }
1662
1663                                 // don't start a new bezier for the last point in the line if we're not looped
1664                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1665                                         continue;
1666
1667                                 bezier=new Bezier();
1668
1669                                 // Add the tangent2 duck
1670                                 if(composite_vertex_value_node)
1671                                 {
1672                                         int i=bline_point.get_split_tangent_flag()?5:4;
1673                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1674                                                 return false;
1675                                         tduck=last_duck();
1676                                 }
1677                                 else
1678                                 {
1679                                         if(bline_point.get_split_tangent_flag())
1680                                                 tduck=new Duck(bline_point.get_tangent2());
1681                                         else
1682                                                 tduck=new Duck(bline_point.get_tangent1());
1683
1684                                         tduck->set_transform_stack(transform_stack);
1685                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1686                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1687                                         tduck->set_editable(false);
1688                                         tduck=add_similar_duck(tduck);
1689 //                                      add_duck(duck);
1690                                         if(param_desc)
1691                                         {
1692                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1693                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1694                                                                 duck->set_origin(last_duck());
1695 /*
1696                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1697                                                                 if(value.same_type_as(synfig::Point()))
1698                                                                         duck->set_origin(value.get(synfig::Point()));
1699 */
1700 //                                              if(!param_desc->get_origin().empty())
1701 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1702                                         }
1703                                         duck->signal_user_click(2).clear();
1704                                         duck->signal_user_click(2).connect(
1705                                                 sigc::bind(
1706                                                         sigc::bind(
1707                                                                 sigc::bind(
1708                                                                         sigc::mem_fun(
1709                                                                                 *canvas_view,
1710                                                                                 &studio::CanvasView::popup_param_menu),
1711                                                                         false),
1712                                                                 1.0f),
1713                                                         synfigapp::ValueDesc(value_node,i)));
1714
1715                                 }
1716
1717                                 tduck->set_origin(duck);
1718                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1719                                 tduck->set_tangent(true);
1720
1721                                 bezier->p1=duck;
1722                                 bezier->c1=tduck;
1723                         }
1724
1725                         // Loop if necessary
1726                         if(bezier && value_node->get_loop())
1727                         {
1728                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1729
1730                                 ValueNode_Composite::Handle composite_vertex_value_node(
1731                                         ValueNode_Composite::Handle::cast_dynamic(
1732                                                 value_node->get_link(first)));
1733
1734                                 // Add the vertex duck
1735                                 duck=first_duck;
1736
1737                                 // Add the tangent1 duck
1738                                 if(composite_vertex_value_node)
1739                                 {
1740                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1741                                                 return false;
1742                                         tduck=last_duck();
1743                                 }
1744                                 else
1745                                 {
1746                                         tduck=new Duck(bline_point.get_tangent1());
1747                                         tduck->set_transform_stack(transform_stack);
1748                                         tduck->set_editable(false);
1749                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1750                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1751                                         tduck=add_similar_duck(tduck);
1752                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1753                                         //add_duck(duck);
1754                                 }
1755
1756                                 tduck->set_origin(duck);
1757                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1758                                 tduck->set_tangent(true);
1759
1760                                 bezier->p2=duck;
1761                                 bezier->c2=tduck;
1762
1763                                 bezier->signal_user_click(2).connect(
1764                                         sigc::bind(
1765                                                 sigc::mem_fun(
1766                                                         *canvas_view,
1767                                                         &studio::CanvasView::popup_param_menu_bezier),
1768                                                 synfigapp::ValueDesc(value_node,first)));
1769
1770                                 duck->signal_user_click(2).clear();
1771                                 duck->signal_user_click(2).connect(
1772                                         sigc::bind(
1773                                                 sigc::bind(
1774                                                         sigc::bind(
1775                                                                 sigc::mem_fun(
1776                                                                         *canvas_view,
1777                                                                         &studio::CanvasView::popup_param_menu),
1778                                                                 false),
1779                                                         1.0f),
1780                                                 synfigapp::ValueDesc(value_node,first)));
1781
1782                                 add_bezier(bezier);
1783                                 bezier=0;
1784                         }
1785                         return true;
1786                 }
1787                 else // Check for DynamicList
1788                 if(value_desc.is_value_node() &&
1789                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1790                 {
1791                         ValueNode_DynamicList::Handle value_node;
1792                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1793                         int i;
1794
1795                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1796                         {
1797                                 Bezier bezier;
1798                                 etl::handle<Duck> first_duck, duck;
1799                                 int first = -1;
1800                                 for(i=0;i<value_node->link_count();i++)
1801                                 {
1802                                         if(!value_node->list[i].status_at_time(get_time()))
1803                                                 continue;
1804                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1805                                                 return false;
1806                                         duck = last_duck();
1807
1808                                         // remember the index of the first vertex we didn't skip
1809                                         if (first == -1)
1810                                         {
1811                                                 first = i;
1812                                                 first_duck = duck;
1813                                         }
1814
1815                                         if(param_desc)
1816                                         {
1817                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1818                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1819                                                                 duck->set_origin(last_duck());
1820 /*
1821                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1822                                                                 if(value.same_type_as(synfig::Point()))
1823                                                                         duck->set_origin(value.get(synfig::Point()));
1824 */
1825 //                                              if(!param_desc->get_origin().empty())
1826 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1827                                         }
1828                                         duck->set_type(Duck::TYPE_VERTEX);
1829                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1830                                         bezier.p2=bezier.c2=duck;
1831
1832                                         if (first != i)
1833                                         {
1834                                                 handle<Bezier> bezier_(new Bezier());
1835                                                 bezier_->p1=bezier.p1;
1836                                                 bezier_->c1=bezier.c1;
1837                                                 bezier_->p2=bezier.p2;
1838                                                 bezier_->c2=bezier.c2;
1839                                                 add_bezier(bezier_);
1840                                                 last_bezier()->signal_user_click(2).connect(
1841                                                         sigc::bind(
1842                                                                 sigc::mem_fun(
1843                                                                         *canvas_view,
1844                                                                         &studio::CanvasView::popup_param_menu_bezier),
1845                                                                 synfigapp::ValueDesc(value_node,i)));
1846                                         }
1847                                 }
1848
1849                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1850                                 {
1851                                         duck = first_duck;
1852
1853                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1854                                         bezier.p2=bezier.c2=duck;
1855
1856                                         handle<Bezier> bezier_(new Bezier());
1857                                         bezier_->p1=bezier.p1;
1858                                         bezier_->c1=bezier.c1;
1859                                         bezier_->p2=bezier.p2;
1860                                         bezier_->c2=bezier.c2;
1861                                         add_bezier(bezier_);
1862                                         last_bezier()->signal_user_click(2).connect(
1863                                                 sigc::bind(
1864                                                         sigc::mem_fun(
1865                                                                 *canvas_view,
1866                                                                 &studio::CanvasView::popup_param_menu_bezier),
1867                                                         synfigapp::ValueDesc(value_node,first)));
1868                                 }
1869                         }
1870                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1871                         {
1872                                 for(i=0;i<value_node->link_count();i++)
1873                                 {
1874                                         if(!value_node->list[i].status_at_time(get_time()))
1875                                                 continue;
1876                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1877                                                 return false;
1878                                 }
1879                         }
1880                         else
1881                                 return false;
1882                 }
1883                 else
1884                 {
1885                         // WRITEME
1886                 }
1887
1888                 return true;
1889         }
1890
1891         break;
1892         default:
1893                 break;
1894         }
1895         return false;
1896 }