synfig-studio/trunk/src/gtkmm/duckmatic.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file duckmatic.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32 #include <fstream>
  33 #include <iostream>
  34 #include <algorithm>
  35
  36 #include <ETL/hermite>
  37
  38 #include "duckmatic.h"
  39 #include <synfigapp/value_desc.h>
  40 #include <synfig/general.h>
  41 #include <synfig/paramdesc.h>
  42 #include <synfig/valuenode_timedswap.h>
  43 #include <synfig/valuenode_animated.h>
  44 #include <synfig/valuenode_composite.h>
  45 #include <synfig/valuenode_scale.h>
  46 #include <synfig/valuenode_bline.h>
  47 #include <synfig/valuenode_blinecalctangent.h>
  48 #include <synfig/valuenode_blinecalcvertex.h>
  49 #include <synfig/valuenode_blinecalcwidth.h>
  50
  51 #include <synfig/curve_helper.h>
  52
  53 #include <sigc++/retype_return.h>
  54 #include <sigc++/retype.h>
  55 #include <sigc++/hide.h>
  56 #include <sigc++/bind.h>
  57
  58 #include "canvasview.h"
  59
  60 #include "onemoment.h"
  61
  62 #include "general.h"
  63
  64 #endif
  65
  66 /* === U S I N G =========================================================== */
  67
  68 using namespace std;
  69 using namespace etl;
  70 using namespace synfig;
  71 using namespace studio;
  72
  73 /* === M A C R O S ========================================================= */
  74
  75 /* 0.33333333333333333 makes for nice short tangent handles,
  76    1.0 makes them draw as their real length */
  77 #define TANGENT_HANDLE_SCALE 0.33333333333333333
  78
  79 /* leave this alone or the bezier won't lie on top of the bline */
  80 #define TANGENT_BEZIER_SCALE 0.33333333333333333
  81
  82 /* === G L O B A L S ======================================================= */
  83
  84 /* === P R O C E D U R E S ================================================= */
  85
  86 /* === M E T H O D S ======================================================= */
  87
  88 /* === E N T R Y P O I N T ================================================= */
  89
  90 Duckmatic::Duckmatic():
  91         type_mask(Duck::TYPE_ALL-Duck::TYPE_WIDTH),
  92         grid_snap(false),
  93         guide_snap(false),
  94         grid_size(1.0/4.0,1.0/4.0),
  95         show_persistent_strokes(true)
  96 {
  97         axis_lock=false;
  98         drag_offset_=Point(0,0);
  99         clear_duck_dragger();
 100 }
 101
 102 Duckmatic::~Duckmatic()
 103 {
 104         clear_ducks();
 105
 106         if (Duck::duck_count)
 107                 synfig::error("%d ducks not yet deleted!", Duck::duck_count);
 108
 109         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
 110                 synfig::info("Duckmatic::~Duckmatic(): Deleted");
 111 }
 112
 113 void
 114 Duckmatic::clear_ducks()
 115 {
 116         duck_data_share_map.clear();
 117         duck_map.clear();
 118
 119         //duck_list_.clear();
 120         bezier_list_.clear();
 121         stroke_list_.clear();
 122
 123         if(show_persistent_strokes)
 124                 stroke_list_=persistent_stroke_list_;
 125 }
 126
 127 //! Returns \a true if the given duck is currently selected
 128 bool
 129 Duckmatic::duck_is_selected(const etl::handle<Duck> &duck)const
 130 {
 131         return duck && selected_ducks.count(duck->get_guid());
 132 }
 133
 134 void
 135 Duckmatic::set_grid_size(const synfig::Vector &s)
 136 {
 137         if(grid_size!=s)
 138         {
 139                 grid_size=s;
 140                 signal_grid_changed();
 141         }
 142 }
 143
 144 void
 145 Duckmatic::set_grid_snap(bool x)
 146 {
 147         if(grid_snap!=x)
 148         {
 149                 grid_snap=x;
 150                 signal_grid_changed();
 151         }
 152 }
 153
 154 void
 155 Duckmatic::set_guide_snap(bool x)
 156 {
 157         if(guide_snap!=x)
 158         {
 159                 guide_snap=x;
 160                 signal_grid_changed();
 161         }
 162 }
 163
 164 Duckmatic::GuideList::iterator
 165 Duckmatic::find_guide_x(synfig::Point pos, float radius)
 166 {
 167         GuideList::iterator iter,best(guide_list_x_.end());
 168         float dist(radius);
 169         for(iter=guide_list_x_.begin();iter!=guide_list_x_.end();++iter)
 170         {
 171                 float amount(abs(*iter-pos[0]));
 172                 if(amount<dist)
 173                 {
 174                         dist=amount;
 175                         best=iter;
 176                 }
 177         }
 178         return best;
 179 }
 180
 181 Duckmatic::GuideList::iterator
 182 Duckmatic::find_guide_y(synfig::Point pos, float radius)
 183 {
 184         GuideList::iterator iter,best(guide_list_y_.end());
 185         float dist(radius);
 186         for(iter=guide_list_y_.begin();iter!=guide_list_y_.end();++iter)
 187         {
 188                 float amount(abs(*iter-pos[1]));
 189                 if(amount<=dist)
 190                 {
 191                         dist=amount;
 192                         best=iter;
 193                 }
 194         }
 195         return best;
 196 }
 197
 198 void
 199 Duckmatic::clear_selected_ducks()
 200 {
 201         selected_ducks.clear();
 202         signal_duck_selection_changed_();
 203 }
 204
 205 etl::handle<Duckmatic::Duck>
 206 Duckmatic::get_selected_duck()const
 207 {
 208         if(selected_ducks.empty() || duck_map.empty())
 209                 return 0;
 210         return duck_map.find(*selected_ducks.begin())->second;
 211 }
 212
 213 void
 214 Duckmatic::refresh_selected_ducks()
 215 {
 216 /*
 217         std::set<etl::handle<Duck> >::iterator iter;
 218         std::set<etl::handle<Duck> > new_set;
 219         if(duck_list().empty())
 220         {
 221                 selected_duck_list.clear();
 222                 signal_duck_selection_changed_();
 223                 return;
 224         }
 225
 226         for(iter=selected_duck_list.begin();iter!=selected_duck_list.end();++iter)
 227         {
 228                 etl::handle<Duck> similar(find_similar_duck(*iter));
 229                 if(similar)
 230                 {
 231                         new_set.insert(similar);
 232                 }
 233         }
 234         selected_duck_list=new_set;
 235 */
 236         GUIDSet old_set(selected_ducks);
 237         GUIDSet::const_iterator iter;
 238
 239         for(iter=old_set.begin();iter!=old_set.end();++iter)
 240         {
 241                 if(duck_map.count(*iter)==0)
 242                         selected_ducks.erase(*iter);
 243         }
 244
 245         signal_duck_selection_changed_();
 246 }
 247
 248 bool
 249 Duckmatic::is_duck_group_selectable(const etl::handle<Duck>& x)const
 250 {
 251         const Type type(get_type_mask());
 252
 253         if (((x->get_type() && (!(type & x->get_type()))) ||
 254                  !x->get_editable()))
 255                 return false;
 256
 257         if(x->get_value_desc().parent_is_layer_param() && type & Duck::TYPE_POSITION)
 258         {
 259                 Layer::Handle layer(x->get_value_desc().get_layer());
 260                 String layer_name(layer->get_name());
 261
 262                 if (layer_name == "outline" || layer_name == "region" || layer_name == "plant" ||
 263                         layer_name == "polygon" || layer_name == "curve_gradient")
 264                         return false;
 265
 266                 if((layer_name=="PasteCanvas"|| layer_name=="paste_canvas") &&
 267                    !layer->get_param("children_lock").get(bool()))
 268                         return false;
 269         }
 270         return true;
 271 }
 272
 273 void
 274 Duckmatic::select_all_ducks()
 275 {
 276         DuckMap::const_iterator iter;
 277         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 278                 if(is_duck_group_selectable(iter->second))
 279                         select_duck(iter->second);
 280                 else
 281                         unselect_duck(iter->second);
 282 }
 283
 284 void
 285 Duckmatic::toggle_select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 286 {
 287         Vector vmin, vmax;
 288         vmin[0]=std::min(tl[0],br[0]);
 289         vmin[1]=std::min(tl[1],br[1]);
 290         vmax[0]=std::max(tl[0],br[0]);
 291         vmax[1]=std::max(tl[1],br[1]);
 292
 293         DuckMap::const_iterator iter;
 294         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 295         {
 296                 Point p(iter->second->get_trans_point());
 297                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1] &&
 298                    is_duck_group_selectable(iter->second))
 299                         toggle_select_duck(iter->second);
 300         }
 301 }
 302
 303 void
 304 Duckmatic::select_ducks_in_box(const synfig::Vector& tl,const synfig::Vector& br)
 305 {
 306         Vector vmin, vmax;
 307         vmin[0]=std::min(tl[0],br[0]);
 308         vmin[1]=std::min(tl[1],br[1]);
 309         vmax[0]=std::max(tl[0],br[0]);
 310         vmax[1]=std::max(tl[1],br[1]);
 311
 312 //      Type type(get_type_mask());
 313
 314         DuckMap::const_iterator iter;
 315         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 316         {
 317                 Point p(iter->second->get_trans_point());
 318                 if(p[0]<=vmax[0] && p[0]>=vmin[0] && p[1]<=vmax[1] && p[1]>=vmin[1])
 319                 {
 320                         if(is_duck_group_selectable(iter->second))
 321                                 select_duck(iter->second);
 322                 }
 323         }
 324 }
 325
 326 int
 327 Duckmatic::count_selected_ducks()const
 328 {
 329         return selected_ducks.size();
 330 }
 331
 332 void
 333 Duckmatic::select_duck(const etl::handle<Duck> &duck)
 334 {
 335         if(duck)
 336         {
 337                 selected_ducks.insert(duck->get_guid());
 338                 signal_duck_selection_changed_();
 339         }
 340 }
 341
 342 DuckList
 343 Duckmatic::get_selected_ducks()const
 344 {
 345         DuckList ret;
 346         GUIDSet::const_iterator iter;
 347         const Type type(get_type_mask());
 348
 349         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 350         {
 351                 const DuckMap::const_iterator d_iter(duck_map.find(*iter));
 352
 353                 if(d_iter==duck_map.end())
 354                         continue;
 355
 356                 if(( d_iter->second->get_type() && (!(type & d_iter->second->get_type())) ) )
 357                         continue;
 358
 359                 ret.push_back(d_iter->second);
 360         }
 361         return ret;
 362 }
 363
 364 DuckList
 365 Duckmatic::get_duck_list()const
 366 {
 367         DuckList ret;
 368         DuckMap::const_iterator iter;
 369         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 370                 ret.push_back(iter->second);
 371         return ret;
 372 }
 373
 374 void
 375 Duckmatic::unselect_duck(const etl::handle<Duck> &duck)
 376 {
 377         if(duck && selected_ducks.count(duck->get_guid()))
 378         {
 379                 selected_ducks.erase(duck->get_guid());
 380                 signal_duck_selection_changed_();
 381         }
 382 }
 383
 384 void
 385 Duckmatic::toggle_select_duck(const etl::handle<Duck> &duck)
 386 {
 387         if(duck_is_selected(duck))
 388                 unselect_duck(duck);
 389         else
 390                 select_duck(duck);
 391 }
 392
 393 void
 394 Duckmatic::translate_selected_ducks(const synfig::Vector& vector)
 395 {
 396         if(duck_dragger_)
 397                 duck_dragger_->duck_drag(this,vector);
 398 }
 399
 400 void
 401 Duckmatic::start_duck_drag(const synfig::Vector& offset)
 402 {
 403         if(duck_dragger_)
 404                 duck_dragger_->begin_duck_drag(this,offset);
 405
 406         //drag_offset_=offset;
 407         drag_offset_=find_duck(offset)->get_trans_point();
 408 }
 409
 410 bool
 411 Duckmatic::end_duck_drag()
 412 {
 413         if(duck_dragger_)
 414                 return duck_dragger_->end_duck_drag(this);
 415         return false;
 416 }
 417
 418 Point
 419 Duckmatic::snap_point_to_grid(const synfig::Point& x, float radius)const
 420 {
 421         Point ret(x);
 422
 423         GuideList::const_iterator guide_x,guide_y;
 424         bool has_guide_x(false), has_guide_y(false);
 425
 426         guide_x=find_guide_x(ret,radius);
 427         if(guide_x!=guide_list_x_.end())
 428                 has_guide_x=true;
 429
 430         guide_y=find_guide_y(ret,radius);
 431         if(guide_y!=guide_list_y_.end())
 432                 has_guide_y=true;
 433
 434         if(get_grid_snap())
 435         {
 436                 Point snap(
 437                         floor(ret[0]/get_grid_size()[0]+0.5)*get_grid_size()[0],
 438                         floor(ret[1]/get_grid_size()[1]+0.5)*get_grid_size()[1]);
 439
 440                 if(abs(snap[0]-ret[0])<=radius && (!has_guide_x || abs(snap[0]-ret[0])<=abs(*guide_x-ret[0])))
 441                         ret[0]=snap[0],has_guide_x=false;
 442                 if(abs(snap[1]-ret[1])<=radius && (!has_guide_y || abs(snap[1]-ret[1])<=abs(*guide_y-ret[1])))
 443                         ret[1]=snap[1],has_guide_y=false;
 444         }
 445
 446         if(guide_snap)
 447         {
 448                 if(has_guide_x)
 449                         ret[0]=*guide_x;
 450                 if(has_guide_y)
 451                         ret[1]=*guide_y;
 452         }
 453
 454         if(axis_lock)
 455         {
 456                 ret-=drag_offset_;
 457                 if(abs(ret[0])<abs(ret[1]))
 458                         ret[0]=0;
 459                 else
 460                         ret[1]=0;
 461                 ret+=drag_offset_;
 462         }
 463
 464         return ret;
 465 }
 466
 467 void
 468 DuckDrag_Translate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 469 {
 470         last_translate_=Vector(0,0);
 471         {
 472                 drag_offset_=duckmatic->find_duck(offset)->get_trans_point();
 473
 474                 snap=Vector(0,0);
 475         }
 476
 477         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 478         DuckList::const_iterator iter;
 479
 480         positions.clear();
 481         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 482         {
 483                 Point p((*iter)->get_trans_point());
 484                 positions.push_back(p);
 485         }
 486 }
 487
 488 bool
 489 DuckDrag_Translate::end_duck_drag(Duckmatic* duckmatic)
 490 {
 491         if(last_translate_.mag()>0.0001)
 492         {
 493                 duckmatic->signal_edited_selected_ducks();
 494                 return true;
 495         }
 496         else
 497         {
 498                 duckmatic->signal_user_click_selected_ducks(0);
 499                 return false;
 500         }
 501 }
 502
 503 void
 504 DuckDrag_Translate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 505 {
 506         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 507         DuckList::const_iterator iter;
 508
 509         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-drag_offset_);
 510         int i;
 511         Time time(duckmatic->get_time());
 512
 513         // drag the vertex and position ducks first
 514         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 515         {
 516                 etl::handle<Duck> duck(*iter);
 517                 if(duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 518                 {
 519                         duck->set_trans_point(positions[i]+vect);
 520
 521                         if (ValueNode_BLineCalcVertex::Handle bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node()))
 522                         {
 523                                 synfig::Point closest_point = duck->get_point();
 524                                 synfig::Real radius = 0.0;
 525                                 ValueNode_BLine::Handle bline = ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link(bline_vertex->get_link_index_from_name("bline")));
 526                                 synfig::find_closest_point(
 527                                         (*bline)(time),
 528                                         duck->get_point(),
 529                                         radius,
 530                                         bline->get_loop(),
 531                                         &closest_point);
 532                                 duck->set_point(closest_point);
 533                         }
 534                 }
 535         }
 536
 537         // then drag the others
 538         for (i=0,iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter,i++)
 539                 if ((*iter)->get_type() != Duck::TYPE_VERTEX && (*iter)->get_type() != Duck::TYPE_POSITION)
 540                         (*iter)->set_trans_point(positions[i]+vect);
 541
 542         // then patch up the tangents for the vertices we've moved
 543         DuckList duck_list(duckmatic->get_duck_list());
 544         for (iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter)
 545         {
 546                 etl::handle<Duck> duck(*iter);
 547                 if ((duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION) &&
 548                         duck->get_value_desc().parent_is_value_node())
 549                 {
 550                         ValueNode_BLineCalcVertex::Handle bline_vertex(ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node()));
 551                         if (bline_vertex)
 552                         {
 553                                 ValueNode_Composite::Handle value_node_composite(ValueNode_Composite::Handle::cast_dynamic(duck->get_value_desc().get_parent_value_node()));
 554                                 if (value_node_composite &&
 555                                         value_node_composite->get_type() == ValueBase::TYPE_BLINEPOINT)
 556                                 {
 557                                         int t1_index(value_node_composite->get_link_index_from_name("t1"));
 558                                         int t2_index(value_node_composite->get_link_index_from_name("t2"));
 559                                         int width_index(value_node_composite->get_link_index_from_name("width"));
 560
 561                                         ValueNode::Handle t1_value_node(value_node_composite->get_link(t1_index));
 562                                         ValueNode::Handle t2_value_node(value_node_composite->get_link(t2_index));
 563                                         ValueNode::Handle width_value_node(value_node_composite->get_link(width_index));
 564
 565                                         ValueNode_BLineCalcTangent::Handle bline_tangent_1(ValueNode_BLineCalcTangent::Handle::cast_dynamic(t1_value_node));
 566                                         ValueNode_BLineCalcTangent::Handle bline_tangent_2(ValueNode_BLineCalcTangent::Handle::cast_dynamic(t2_value_node));
 567                                         ValueNode_BLineCalcWidth::Handle bline_width(ValueNode_BLineCalcWidth::Handle::cast_dynamic(width_value_node));
 568
 569                                         // these 3 are all the same at the moment, but let's play it safe, just in case it changes
 570                                         int tangent_amount_index(bline_tangent_1->get_link_index_from_name("amount"));
 571                                         int vertex_amount_index(bline_vertex->get_link_index_from_name("amount"));
 572                                         int width_amount_index(bline_width->get_link_index_from_name("amount"));
 573
 574                                         ValueNode::Handle amount_value_node(bline_vertex->get_link(vertex_amount_index));
 575
 576                                         if (bline_tangent_1 || bline_tangent_2 || bline_width)
 577                                         {
 578                                                 synfig::Real radius = 0.0;
 579                                                 ValueNode_BLine::Handle bline(ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link(bline_vertex->get_link_index_from_name("bline"))));
 580                                                 Real amount = synfig::find_closest_point((*bline)(time), duck->get_point(), radius, bline->get_loop());
 581
 582                                                 // we need to update the position of the tangent ducks - but how do we find these ducks?
 583                                                 // this is a brute force search - but is there a better way to do it?
 584                                                 if (bline_tangent_1 &&
 585                                                         bline_tangent_1->get_link(tangent_amount_index) == amount_value_node)
 586                                                 {
 587                                                         Vector tangent = (*bline_tangent_1)(time, amount).get(Vector());
 588                                                         DuckList::iterator iter;
 589                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 590                                                                 if ((*iter)->get_value_desc().get_value_node() == t1_value_node)
 591                                                                         (*iter)->set_point(tangent);
 592                                                 }
 593
 594                                                 if (bline_tangent_2 &&
 595                                                         bline_tangent_2->get_link(tangent_amount_index) == amount_value_node)
 596                                                 {
 597                                                         Vector tangent = (*bline_tangent_2)(time, amount).get(Vector());
 598                                                         DuckList::iterator iter;
 599                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 600                                                                 if ((*iter)->get_value_desc().get_value_node() == t2_value_node)
 601                                                                         (*iter)->set_point(tangent);
 602                                                 }
 603
 604                                                 if (bline_width &&
 605                                                         bline_width->get_link(width_amount_index) == amount_value_node)
 606                                                 {
 607                                                         Real width = (*bline_width)(time, amount).get(Real());
 608                                                         DuckList::iterator iter;
 609                                                         for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 610                                                                 if ((*iter)->get_value_desc().get_value_node() == width_value_node)
 611                                                                         (*iter)->set_point(Point(width, 0));
 612                                                 }
 613                                         }
 614                                 }
 615                         }
 616                 }
 617         }
 618
 619         last_translate_=vect;
 620 }
 621
 622 void
 623 Duckmatic::signal_edited_selected_ducks()
 624 {
 625         const DuckList ducks(get_selected_ducks());
 626         DuckList::const_iterator iter;
 627
 628         synfig::GUIDSet old_set(selected_ducks);
 629
 630         // If we have more than 20 things to move, then display
 631         // something to explain that it may take a moment
 632         smart_ptr<OneMoment> wait; if(ducks.size()>20)wait.spawn();
 633
 634         // Go ahead and call everyone's signals
 635         for(iter=ducks.begin();iter!=ducks.end();++iter)
 636         {
 637                 if ((*iter)->get_type() == Duck::TYPE_ANGLE)
 638                 {
 639                         if(!(*iter)->signal_edited_angle()((*iter)->get_rotations()))
 640                         {
 641                                 selected_ducks=old_set;
 642                                 throw String("Bad edit");
 643                         }
 644                 }
 645                 else if (App::restrict_radius_ducks &&
 646                                  (*iter)->is_radius())
 647                 {
 648                         Point point((*iter)->get_point());
 649                         bool changed = false;
 650
 651                         if (point[0] < 0)
 652                         {
 653                                 point[0] = 0;
 654                                 changed = true;
 655                         }
 656                         if (point[1] < 0)
 657                         {
 658                                 point[1] = 0;
 659                                 changed = true;
 660                         }
 661
 662                         if (changed) (*iter)->set_point(point);
 663
 664                         if(!(*iter)->signal_edited()(point))
 665                         {
 666                                 selected_ducks=old_set;
 667                                 throw String("Bad edit");
 668                         }
 669                 }
 670                 else
 671                 {
 672                         if(!(*iter)->signal_edited()((*iter)->get_point()))
 673                         {
 674                                 selected_ducks=old_set;
 675                                 throw String("Bad edit");
 676                         }
 677                 }
 678         }
 679         selected_ducks=old_set;
 680 }
 681
 682 void
 683 Duckmatic::signal_user_click_selected_ducks(int button)
 684 {
 685         const DuckList ducks(get_selected_ducks());
 686         DuckList::const_iterator iter;
 687
 688         for(iter=ducks.begin();iter!=ducks.end();++iter)
 689         {
 690                 (*iter)->signal_user_click(button)();
 691         }
 692 }
 693
 694 void
 695 Duckmatic::add_duck(const etl::handle<Duck> &duck)
 696 {
 697         //if(!duck_map.count(duck->get_guid()))
 698         {
 699                 if(duck_data_share_map.count(duck->get_data_guid()))
 700                 {
 701                         duck->set_shared_point(duck_data_share_map[duck->get_data_guid()]);
 702                 }
 703                 else
 704                 {
 705                         etl::smart_ptr<synfig::Point> point(new Point(duck->get_point()));
 706                         duck->set_shared_point(point);
 707                         duck_data_share_map[duck->get_data_guid()]=point;
 708                 }
 709
 710                 duck_map.insert(duck);
 711         }
 712
 713         last_duck_guid=duck->get_guid();
 714 }
 715
 716 void
 717 Duckmatic::add_bezier(const etl::handle<Bezier> &bezier)
 718 {
 719         bezier_list_.push_back(bezier);
 720 }
 721
 722 void
 723 Duckmatic::add_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 724 {
 725         assert(stroke_point_list);
 726
 727         std::list<etl::handle<Stroke> >::iterator iter;
 728
 729         for(iter=stroke_list_.begin();iter!=stroke_list_.end();++iter)
 730         {
 731                 if((*iter)->stroke_data==stroke_point_list)
 732                         return;
 733         }
 734
 735         etl::handle<Stroke> stroke(new Stroke());
 736
 737         stroke->stroke_data=stroke_point_list;
 738         stroke->color=color;
 739
 740         stroke_list_.push_back(stroke);
 741 }
 742
 743 void
 744 Duckmatic::add_persistent_stroke(etl::smart_ptr<std::list<synfig::Point> > stroke_point_list, const synfig::Color& color)
 745 {
 746         add_stroke(stroke_point_list,color);
 747         persistent_stroke_list_.push_back(stroke_list_.back());
 748 }
 749
 750 void
 751 Duckmatic::clear_persistent_strokes()
 752 {
 753         persistent_stroke_list_.clear();
 754 }
 755
 756 void
 757 Duckmatic::set_show_persistent_strokes(bool x)
 758 {
 759         if(x!=show_persistent_strokes)
 760         {
 761                 show_persistent_strokes=x;
 762                 if(x)
 763                         stroke_list_=persistent_stroke_list_;
 764                 else
 765                         stroke_list_.clear();
 766         }
 767 }
 768
 769 void
 770 Duckmatic::erase_duck(const etl::handle<Duck> &duck)
 771 {
 772         duck_map.erase(duck->get_guid());
 773 }
 774
 775 etl::handle<Duckmatic::Duck>
 776 Duckmatic::find_similar_duck(etl::handle<Duck> duck)
 777 {
 778         DuckMap::const_iterator iter(duck_map.find(duck->get_guid()));
 779         if(iter!=duck_map.end())
 780                 return iter->second;
 781         return 0;
 782
 783 /*      std::list<handle<Duck> >::reverse_iterator iter;
 784
 785         for(iter=duck_list_.rbegin();iter!=duck_list_.rend();++iter)
 786         {
 787                 if(*iter!=duck && **iter==*duck)
 788                 {
 789                         //synfig::info("Found similar duck! (iter:%08x vs. duck:%08x)",iter->get(), duck.get());
 790                         return *iter;
 791                 }
 792         }
 793         return 0;
 794 */
 795 }
 796
 797 etl::handle<Duckmatic::Duck>
 798 Duckmatic::add_similar_duck(etl::handle<Duck> duck)
 799 {
 800         etl::handle<Duck> similar(find_similar_duck(duck));
 801         if(!similar)
 802         {
 803                 add_duck(duck);
 804                 return duck;
 805         }
 806         return similar;
 807 }
 808
 809 void
 810 Duckmatic::erase_bezier(const etl::handle<Bezier> &bezier)
 811 {
 812         std::list<handle<Bezier> >::iterator iter;
 813
 814         for(iter=bezier_list_.begin();iter!=bezier_list_.end();++iter)
 815         {
 816                 if(*iter==bezier)
 817                 {
 818                         bezier_list_.erase(iter);
 819                         return;
 820                 }
 821         }
 822         synfig::warning("Unable to find bezier to erase!");
 823 }
 824
 825 etl::handle<Duckmatic::Duck>
 826 Duckmatic::last_duck()const
 827 {
 828         DuckMap::const_iterator iter(duck_map.find(last_duck_guid));
 829         if(iter!=duck_map.end())
 830                 return iter->second;
 831         return 0;
 832 }
 833
 834 etl::handle<Duckmatic::Bezier>
 835 Duckmatic::last_bezier()const
 836 {
 837         return bezier_list_.back();
 838 }
 839
 840 etl::handle<Duckmatic::Duck>
 841 Duckmatic::find_duck(synfig::Point point, synfig::Real radius, Duck::Type type)
 842 {
 843         if(radius==0)radius=10000000;
 844
 845         if(type==Duck::TYPE_DEFAULT)
 846                 type=get_type_mask();
 847
 848         Real closest(10000000);
 849         etl::handle<Duck> ret;
 850
 851         DuckMap::const_iterator iter;
 852
 853         for(iter=duck_map.begin();iter!=duck_map.end();++iter)
 854         {
 855                 const Duck::Handle& duck(iter->second);
 856
 857                 if(duck->get_ignore())
 858                         continue;
 859                 Real dist((duck->get_trans_point()-point).mag_squared());
 860
 861                 if(duck->get_type()&Duck::TYPE_VERTEX)
 862                         dist*=1.0001;
 863                 else if(duck->get_type()&Duck::TYPE_RADIUS)
 864                         dist*=0.9999;
 865
 866                 if(dist<=closest && !( duck->get_type() && (!(type & duck->get_type())) ) )
 867                 {
 868                         {
 869                                 closest=dist;
 870                                 ret=duck;
 871                         }
 872                 }
 873         }
 874
 875         if(radius==0 || closest<radius*radius)
 876                 return ret;
 877
 878         return 0;
 879 }
 880
 881 etl::handle<Duckmatic::Bezier>
 882 Duckmatic::find_bezier(synfig::Point point, synfig::Real radius,float* location)
 883 {
 884         return find_bezier(point,radius,radius,location);
 885 }
 886
 887 etl::handle<Duckmatic::Bezier>
 888 Duckmatic::find_bezier(synfig::Point pos, synfig::Real scale, synfig::Real radius, float* location)
 889 {
 890         if(radius==0)radius=10000000;
 891         Real closest(10000000);
 892         etl::handle<Bezier> ret;
 893
 894         bezier<Point>   curve;
 895
 896         Real    d,step;
 897         float   time = 0;
 898         float   best_time = 0;
 899
 900         for(std::list<handle<Bezier> >::const_iterator iter=bezier_list().begin();iter!=bezier_list().end();++iter)
 901         {
 902                 curve[0] = (*iter)->p1->get_trans_point();
 903                 curve[1] = (*iter)->c1->get_trans_point();
 904                 curve[2] = (*iter)->c2->get_trans_point();
 905                 curve[3] = (*iter)->p2->get_trans_point();
 906                 curve.sync();
 907
 908 #if 0
 909                 // I don't know why this doesn't work
 910                 time=curve.find_closest(pos,6);
 911                 d=((curve(time)-pos).mag_squared());
 912
 913 #else
 914                 //set the step size based on the size of the picture
 915                 d = (curve[1] - curve[0]).mag() + (curve[2]-curve[1]).mag()     + (curve[3]-curve[2]).mag();
 916
 917                 step = d/(2*scale); //want to make the distance between lines happy
 918
 919                 step = max(step,0.01); //100 samples should be plenty
 920                 step = min(step,0.1); //10 is minimum
 921
 922                 d = find_closest(curve,pos,step,&closest,&time);
 923 #endif
 924
 925                 if(d < closest)
 926                 {
 927                         closest = d;
 928                         ret = *iter;
 929                         best_time=time;
 930                 }
 931         }
 932
 933         if(closest < radius*radius)
 934         {
 935                 if(location)
 936                         *location = best_time;  // We need to square-root this because we were dealing with squared distances
 937
 938                 return ret;
 939         }
 940
 941         return 0;
 942 }
 943
 944 bool
 945 Duckmatic::save_sketch(const synfig::String& filename)const
 946 {
 947         ChangeLocale change_locale(LC_NUMERIC, "C");
 948         std::ofstream file(filename.c_str());
 949
 950         if(!file)return false;
 951
 952         file<<"SKETCH"<<endl;
 953
 954         std::list<etl::handle<Stroke> >::const_iterator iter;
 955
 956         for(iter=persistent_stroke_list_.begin();iter!=persistent_stroke_list_.end();++iter)
 957         {
 958                 file<<"C "
 959                         <<(*iter)->color.get_r()<<' '
 960                         <<(*iter)->color.get_g()<<' '
 961                         <<(*iter)->color.get_b()
 962                 <<endl;
 963                 std::list<synfig::Point>::const_iterator viter;
 964                 for(viter=(*iter)->stroke_data->begin();viter!=(*iter)->stroke_data->end();++viter)
 965                 {
 966                         file<<"V "
 967                                 <<(*viter)[0]<<' '
 968                                 <<(*viter)[1]
 969                         <<endl;
 970                 }
 971         }
 972         if(!file)return false;
 973         sketch_filename_=filename;
 974         signal_sketch_saved_();
 975         return true;
 976 }
 977
 978 bool
 979 Duckmatic::load_sketch(const synfig::String& filename)
 980 {
 981         ChangeLocale change_locale(LC_NUMERIC, "C");
 982         std::ifstream file(filename.c_str());
 983
 984         if(!file)
 985                 return false;
 986
 987         std::string line;
 988         getline(file,line);
 989
 990         if(line!="SKETCH")
 991         {
 992                 synfig::error("Not a sketch");
 993                 return false;
 994         }
 995
 996         etl::smart_ptr<std::list<synfig::Point> > stroke_data;
 997
 998         while(file)
 999         {
1000                 getline(file,line);
1001
1002                 if(line.empty())
1003                         continue;
1004
1005                 switch(line[0])
1006                 {
1007                 case 'C':
1008                 case 'c':
1009                         {
1010                                 stroke_data.spawn();
1011                                 float r,g,b;
1012                                 if(!strscanf(line,"C %f %f %f",&r, &g, &b))
1013                                 {
1014                                         synfig::warning("Bad color line \"%s\"",line.c_str());
1015                                         r=0;g=0;b=0;
1016                                 }
1017                                 add_persistent_stroke(stroke_data, synfig::Color(r,g,b));
1018                         }
1019                         break;
1020                 case 'V':
1021                 case 'v':
1022                         if(!stroke_data)
1023                         {
1024                                 stroke_data.spawn();
1025                                 add_persistent_stroke(stroke_data, synfig::Color(0,0,0));
1026                         }
1027                         float x,y;
1028                         if(!strscanf(line,"V %f %f",&x, &y))
1029                                 synfig::warning("Bad vertex \"%s\"",line.c_str());
1030                         else
1031                                 stroke_data->push_back(synfig::Vector(x,y));
1032                         break;
1033                 default:
1034                         synfig::warning("Unexpected sketch token '%c'",line[0]);
1035                         break;
1036                 }
1037         }
1038
1039         sketch_filename_=filename;
1040         return true;
1041 }
1042
1043 Duckmatic::Push::Push(Duckmatic *duckmatic_):
1044         duckmatic_(duckmatic_)
1045 {
1046         duck_map=duckmatic_->duck_map;
1047         bezier_list_=duckmatic_->bezier_list_;
1048         duck_data_share_map=duckmatic_->duck_data_share_map;
1049         stroke_list_=duckmatic_->stroke_list_;
1050         duck_dragger_=duckmatic_->duck_dragger_;
1051         needs_restore=true;
1052 }
1053
1054 Duckmatic::Push::~Push()
1055 {
1056         if(needs_restore)
1057                 restore();
1058 }
1059
1060 void
1061 Duckmatic::Push::restore()
1062 {
1063         duckmatic_->duck_map=duck_map;
1064         duckmatic_->bezier_list_=bezier_list_;
1065         duckmatic_->duck_data_share_map=duck_data_share_map;
1066         duckmatic_->stroke_list_=stroke_list_;
1067         duckmatic_->duck_dragger_=duck_dragger_;
1068         needs_restore=false;
1069 }
1070
1071 inline String guid_string(const synfigapp::ValueDesc& x)
1072 {
1073         if(x.parent_is_layer_param())
1074                 return strprintf("%s",x.get_layer()->get_guid().get_string().c_str())+x.get_param_name();
1075         //if(x.is_value_node())
1076                 return strprintf("%s",x.get_value_node()->get_guid().get_string().c_str());
1077 }
1078
1079 inline synfig::GUID calc_duck_guid(const synfigapp::ValueDesc& x,const synfig::TransformStack& transform_stack)
1080 {
1081         synfig::GUID ret(0);
1082
1083         if(x.parent_is_layer_param())
1084         {
1085                 ret=x.get_layer()->get_guid()^synfig::GUID::hasher(x.get_param_name());
1086         }
1087         else
1088         {
1089                 ret=x.get_value_node()->get_guid();
1090         }
1091
1092         ret^=transform_stack.get_guid();
1093         return ret;
1094 }
1095
1096 /*
1097 Duck::Handle
1098 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)
1099 {
1100         synfig::GUID duck_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(modifier));
1101         etl::handle<Duck> duck=new Duck();
1102
1103         return duck;
1104 }
1105 */
1106
1107 bool
1108 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)
1109 {
1110         ValueBase::Type type=value_desc.get_value_type();
1111 #define REAL_COOKIE             reinterpret_cast<synfig::ParamDesc*>(28)
1112         switch(type)
1113         {
1114         case ValueBase::TYPE_REAL:
1115
1116                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1117                 {
1118                         etl::handle<Duck> duck=new Duck();
1119                         duck->set_transform_stack(transform_stack);
1120                         duck->set_radius(true);
1121                         duck->set_type(Duck::TYPE_RADIUS);
1122
1123                         // put the duck on the right hand side of the center
1124                         duck->set_point(Point(value_desc.get_value(get_time()).get(Real()), 0));
1125                         duck->set_name(guid_string(value_desc));
1126                         if(value_desc.is_value_node())
1127                         {
1128                                 // If the ValueNode can be directly manipulated,
1129                                 // then set it as so.
1130                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1131                         }
1132                         else
1133                         {
1134                                 duck->set_editable(true);
1135                         }
1136
1137                         if(param_desc && param_desc!=REAL_COOKIE)
1138                         {
1139                                 if(!param_desc->get_origin().empty())
1140                                 {
1141                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1142                                         /*
1143                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1144                                         */
1145                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1146                                         duck->set_origin(last_duck());
1147                                 }
1148                                 duck->set_scalar(param_desc->get_scalar());
1149                         }
1150
1151                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_REAL:
1152                         duck->signal_edited().connect(
1153                                 sigc::bind(
1154                                         sigc::mem_fun(
1155                                                 *canvas_view,
1156                                                 &studio::CanvasView::on_duck_changed),
1157                                         value_desc));
1158                         duck->set_value_desc(value_desc);
1159
1160                         duck->signal_user_click(2).connect(
1161                                 sigc::bind(
1162                                         sigc::bind(
1163                                                 sigc::bind(
1164                                                         sigc::mem_fun(
1165                                                                 *canvas_view,
1166                                                                 &studio::CanvasView::popup_param_menu),
1167                                                         false),
1168                                                 0.0f),
1169                                         value_desc));
1170
1171                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1172
1173                         add_duck(duck);
1174
1175                         return true;
1176                 }
1177                 break;
1178
1179         case ValueBase::TYPE_ANGLE:
1180
1181                 if(!param_desc || param_desc==REAL_COOKIE || !param_desc->get_origin().empty())
1182                 {
1183                         etl::handle<Duck> duck=new Duck();
1184                         duck->set_type(Duck::TYPE_ANGLE);
1185                         duck->set_transform_stack(transform_stack);
1186                         synfig::Angle angle;
1187
1188                         angle=value_desc.get_value(get_time()).get(Angle());
1189                         duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1190                         duck->set_name(guid_string(value_desc));
1191                         if(value_desc.is_value_node())
1192                         {
1193                                 ValueNode::Handle value_node=value_desc.get_value_node();
1194                                 //duck->set_name(strprintf("%x",value_node.get()));
1195
1196                                 // If the ValueNode can be directly manipulated,
1197                                 // then set it as so.
1198                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1199                         }
1200                         else
1201                         {
1202                                 //angle=(value_desc.get_value().get(Angle()));
1203                                 //duck->set_point(Point(Angle::cos(angle).get(),Angle::sin(angle).get()));
1204                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1205                                 duck->set_editable(true);
1206                         }
1207
1208                         if(param_desc && param_desc!=REAL_COOKIE)
1209                         {
1210                                 if(!param_desc->get_origin().empty())
1211                                 {
1212                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1213                                         /*
1214                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1215                                         */
1216                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1217                                         duck->set_origin(last_duck());
1218                                 }
1219                                 duck->set_scalar(param_desc->get_scalar());
1220                         }
1221
1222                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_ANGLE:
1223                         duck->signal_edited_angle().clear();
1224                         duck->signal_edited_angle().connect(
1225                                 sigc::bind(
1226                                         sigc::mem_fun(
1227                                                 *canvas_view,
1228                                                 &studio::CanvasView::on_duck_angle_changed),
1229                                         value_desc));
1230                         duck->set_value_desc(value_desc);
1231
1232                         duck->signal_user_click(2).connect(
1233                                 sigc::bind(
1234                                         sigc::bind(
1235                                                 sigc::bind(
1236                                                         sigc::mem_fun(
1237                                                                 *canvas_view,
1238                                                                 &studio::CanvasView::popup_param_menu),
1239                                                         false),
1240                                                 0.0f),
1241                                         value_desc));
1242                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1243
1244                         add_duck(duck);
1245
1246                         return true;
1247                 }
1248                 break;
1249
1250         case ValueBase::TYPE_VECTOR:
1251                 {
1252                         etl::handle<Duck> duck=new Duck();
1253                         duck->set_transform_stack(transform_stack);
1254
1255                         duck->set_point(value_desc.get_value(get_time()).get(Point()));
1256                         duck->set_name(guid_string(value_desc));
1257                         if(value_desc.is_value_node())
1258                         {
1259                                 //duck->set_name(strprintf("%x",value_desc.get_value_node().get()));
1260
1261                                 // If the ValueNode can be directly manipulated,
1262                                 // then set it as so.
1263                                 duck->set_editable(synfigapp::is_editable(value_desc.get_value_node()));
1264                         }
1265                         else
1266                         {
1267                                 //duck->set_point(value_desc.get_value().get(Point()));
1268                                 //duck->set_name(strprintf("%x",value_desc.get_layer().get())+value_desc.get_param_name());
1269                                 duck->set_editable(true);
1270                         }
1271
1272                         // If we were passed a parameter description
1273                         if(param_desc)
1274                         {
1275                                 if(!param_desc->get_connect().empty())
1276                                 {
1277                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_connect());
1278                                         Duck::Handle connect_duck;
1279                                         if(duck_map.find(calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0))!=duck_map.end())
1280                                         {
1281                                                 connect_duck=duck_map[calc_duck_guid(value_desc_origin,transform_stack)^synfig::GUID::hasher(0)];
1282                                         }
1283                                         else
1284                                         {
1285                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1286                                                 connect_duck=last_duck();
1287                                         }
1288                                         duck->set_connect_duck(connect_duck);
1289                                 }
1290                                 if(!param_desc->get_box().empty())
1291                                 {
1292                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_box());
1293                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1294                                         duck->set_box_duck(last_duck());
1295                                 }
1296
1297                                 // If we have an origin
1298                                 if(!param_desc->get_origin().empty())
1299                                 {
1300                                         synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1301                                         /*
1302                                         duck->set_origin(value_desc_origin.get_value(get_time()).get(synfig::Point()));
1303                                         */
1304                                         add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1305                                         duck->set_origin(last_duck());
1306                                         duck->set_type(Duck::TYPE_VERTEX);
1307                                 }
1308                                 else
1309                                         duck->set_type(Duck::TYPE_POSITION);
1310
1311                                 duck->set_scalar(param_desc->get_scalar());
1312                         }
1313                         else
1314                                 duck->set_type(Duck::TYPE_POSITION);
1315
1316                         duck->signal_edited().clear(); // value_desc.get_value_type() == ValueBase::TYPE_VECTOR:
1317                         duck->signal_edited().connect(
1318                                 sigc::bind(
1319                                         sigc::mem_fun(
1320                                                 *canvas_view,
1321                                                 &studio::CanvasView::on_duck_changed),
1322                                         value_desc));
1323                         duck->set_value_desc(value_desc);
1324
1325                         duck->signal_user_click(2).connect(
1326                                 sigc::bind(
1327                                         sigc::bind(
1328                                                 sigc::bind(
1329                                                         sigc::mem_fun(
1330                                                                 *canvas_view,
1331                                                                 &studio::CanvasView::popup_param_menu),
1332                                                         false),
1333                                                 1.0f),
1334                                         value_desc));
1335                         duck->set_guid(calc_duck_guid(value_desc,transform_stack)^synfig::GUID::hasher(multiple));
1336                         add_duck(duck);
1337
1338                         return true;
1339                 }
1340                 break;
1341         case ValueBase::TYPE_SEGMENT:
1342                 {
1343                         etl::handle<Bezier> bezier(new Bezier());
1344                         ValueNode_Composite::Handle value_node;
1345
1346                         if(value_desc.is_value_node() &&
1347                                 (value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())))
1348                         {
1349                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1350                                         return false;
1351                                 bezier->p1=last_duck();
1352                                 bezier->p1->set_type(Duck::TYPE_VERTEX);
1353                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,1),canvas_view,transform_stack))
1354                                         return false;
1355                                 bezier->c1=last_duck();
1356                                 bezier->c1->set_type(Duck::TYPE_TANGENT);
1357                                 bezier->c1->set_origin(bezier->p1);
1358                                 bezier->c1->set_scalar(TANGENT_BEZIER_SCALE);
1359                                 bezier->c1->set_tangent(true);
1360
1361                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,2),canvas_view,transform_stack))
1362                                         return false;
1363                                 bezier->p2=last_duck();
1364                                 bezier->p2->set_type(Duck::TYPE_VERTEX);
1365                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,3),canvas_view,transform_stack))
1366                                         return false;
1367                                 bezier->c2=last_duck();
1368                                 bezier->c2->set_type(Duck::TYPE_TANGENT);
1369                                 bezier->c2->set_origin(bezier->p2);
1370                                 bezier->c2->set_scalar(-TANGENT_BEZIER_SCALE);
1371                                 bezier->c2->set_tangent(true);
1372
1373                                 bezier->signal_user_click(2).connect(
1374                                         sigc::bind(
1375                                                 sigc::mem_fun(
1376                                                         *canvas_view,
1377                                                         &studio::CanvasView::popup_param_menu_bezier),
1378                                                 value_desc));
1379
1380                                 add_bezier(bezier);
1381                         }
1382                         else if(value_desc.get_value().is_valid())
1383                         {
1384                                 Segment segment=value_desc.get_value();
1385                                 etl::handle<Duck> duck_p,duck_c;
1386                                 synfig::String name;
1387                                 if(param_desc)
1388                                 {
1389                                         name=param_desc->get_local_name();
1390                                 }
1391                                 else
1392                                 {
1393                                         name=guid_string(value_desc);
1394                                 }
1395
1396                                 duck_p=new Duck(segment.p1);
1397                                 duck_p->set_name(name+".P1");
1398                                 duck_p->set_type(Duck::TYPE_VERTEX);
1399                                 add_duck(duck_p);
1400
1401                                 duck_c=new Duck(segment.t1);
1402                                 duck_c->set_name(name+".T1");
1403                                 duck_c->set_type(Duck::TYPE_TANGENT);
1404                                 add_duck(duck_c);
1405                                 duck_c->set_origin(duck_p);
1406                                 duck_c->set_scalar(TANGENT_HANDLE_SCALE);
1407                                 duck_c->set_tangent(true);
1408
1409                                 bezier->p1=duck_p;
1410                                 bezier->c1=duck_c;
1411
1412                                 duck_p=new Duck(segment.p2);
1413                                 duck_p->set_name(name+".P2");
1414                                 duck_p->set_type(Duck::TYPE_VERTEX);
1415                                 add_duck(duck_p);
1416
1417                                 duck_c=new Duck(segment.t2);
1418                                 duck_c->set_type(Duck::TYPE_TANGENT);
1419                                 duck_c->set_name(name+".T2");
1420                                 add_duck(duck_c);
1421                                 duck_c->set_origin(duck_p);
1422                                 duck_c->set_scalar(-TANGENT_HANDLE_SCALE);
1423                                 duck_c->set_tangent(true);
1424
1425                                 bezier->p2=duck_p;
1426                                 bezier->c2=duck_c;
1427                                 add_bezier(bezier);
1428                         }
1429
1430                         return true;
1431                 }
1432                 break;
1433         case ValueBase::TYPE_BLINEPOINT:
1434         {
1435
1436                 if(value_desc.is_value_node() &&
1437                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
1438                 {
1439                         ValueNode_Composite::Handle value_node;
1440                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node());
1441
1442                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,0),canvas_view,transform_stack))
1443                                 return false;
1444                         etl::handle<Duck> vertex_duck(last_duck());
1445                         vertex_duck->set_type(Duck::TYPE_VERTEX);
1446                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1447                                 return false;
1448                         etl::handle<Duck> t1_duck(last_duck());
1449
1450                         t1_duck->set_origin(vertex_duck);
1451                         t1_duck->set_scalar(-TANGENT_HANDLE_SCALE);
1452                         t1_duck->set_tangent(true);
1453
1454                         etl::handle<Duck> t2_duck;
1455
1456                         // If the tangents are split
1457                         if((*value_node->get_link("split"))(get_time()).get(bool()))
1458                         {
1459                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,5),canvas_view,transform_stack))
1460                                         return false;
1461                                 t2_duck=last_duck();
1462                                 t2_duck->set_origin(vertex_duck);
1463                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1464                                 t2_duck->set_tangent(true);
1465                         }
1466                         else
1467                         {
1468                                 if(!add_to_ducks(synfigapp::ValueDesc(value_node,4),canvas_view,transform_stack))
1469                                         return false;
1470                                 t2_duck=last_duck();
1471                                 t2_duck->set_origin(vertex_duck);
1472                                 t2_duck->set_scalar(TANGENT_HANDLE_SCALE);
1473                                 t2_duck->set_tangent(true);
1474                         }
1475                         return true;
1476                 }
1477
1478         }
1479         break;
1480         case ValueBase::TYPE_LIST:
1481         {
1482                 // Check for BLine
1483                 if (value_desc.is_value_node() &&
1484                         ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node()))
1485                 {
1486                         ValueNode_BLine::Handle value_node;
1487                         value_node=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_value_node());
1488
1489                         int i,first=-1;
1490
1491                         etl::handle<Bezier> bezier;
1492                         etl::handle<Duck> first_duck;
1493                         etl::handle<Duck> duck, tduck;
1494
1495                         for (i = 0; i < value_node->link_count(); i++)
1496                         {
1497                                 float amount(value_node->list[i].amount_at_time(get_time()));
1498
1499                                 // skip vertices that aren't fully on
1500                                 if (amount < 0.9999f)
1501                                         continue;
1502
1503                                 // remember the index of the first vertex we didn't skip
1504                                 if (first == -1)
1505                                         first = i;
1506
1507                                 BLinePoint bline_point((*value_node->get_link(i))(get_time()));
1508
1509                                 // try casting the vertex to Composite - this tells us whether it is composite or not
1510                                 ValueNode_Composite::Handle composite_vertex_value_node(
1511                                         ValueNode_Composite::Handle::cast_dynamic(value_node->get_link(i)));
1512
1513                                 // add the vertex duck - it's a composite
1514                                 if(composite_vertex_value_node)
1515                                 {
1516                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,0),canvas_view,transform_stack))
1517                                         {
1518                                                 duck=last_duck();
1519                                                 if(i==first)
1520                                                         first_duck=duck;
1521                                                 duck->set_type(Duck::TYPE_VERTEX);
1522
1523                                                 duck->signal_user_click(2).clear();
1524                                                 duck->signal_user_click(2).connect(
1525                                                         sigc::bind(
1526                                                                 sigc::bind(
1527                                                                         sigc::bind(
1528                                                                                 sigc::mem_fun(
1529                                                                                         *canvas_view,
1530                                                                                         &studio::CanvasView::popup_param_menu),
1531                                                                                 false),
1532                                                                         1.0f),
1533                                                                 synfigapp::ValueDesc(value_node,i)));
1534
1535                                                 if(param_desc)
1536                                                 {
1537                                                         if(!param_desc->get_origin().empty())
1538                                                         {
1539                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1540                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1541                                                                 duck->set_origin(last_duck());
1542 /*
1543                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1544                                                                 if(value.same_type_as(synfig::Point()))
1545                                                                         duck->set_origin(value.get(synfig::Point()));
1546 */
1547                                                         }
1548                                                 }
1549                                         }
1550                                         else
1551                                                 return false;
1552                                 }
1553                                 // else it's not a composite
1554                                 else
1555                                 {
1556                                         duck=new Duck(bline_point.get_vertex());
1557                                         if(i==first)
1558                                                 first_duck=duck;
1559                                         duck->set_transform_stack(transform_stack);
1560                                         duck->set_editable(false);
1561                                         //duck->set_name(strprintf("%x-vertex",value_node->get_link(i).get()));
1562                                         duck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".v");
1563
1564                                         duck->set_type(Duck::TYPE_VERTEX);
1565                                         if(param_desc)
1566                                         {
1567                                                 if(!param_desc->get_origin().empty())
1568                                                 {
1569                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1570                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1571                                                                 duck->set_origin(last_duck());
1572 /*
1573                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1574                                                                 if(value.same_type_as(synfig::Point()))
1575                                                                         duck->set_origin(value.get(synfig::Point()));
1576 */
1577                                                 }
1578                                         }
1579                                         duck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".v"));
1580                                         duck=add_similar_duck(duck);
1581 //                                      add_duck(duck);
1582                                 }
1583
1584                                 // Add the width duck if it is a parameter with a hint (ie. "width") or if it isn't a parameter
1585                                 if ((param_desc && !param_desc->get_hint().empty()) ||
1586                                         !param_desc)
1587                                 {
1588                                         etl::handle<Duck> width;
1589                                         if (add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,1),canvas_view,transform_stack,REAL_COOKIE))
1590                                         {
1591                                                 width=last_duck();
1592                                                 width->set_origin(duck);
1593                                                 width->set_type(Duck::TYPE_WIDTH);
1594                                                 width->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".w");
1595
1596                                                 // if the bline is a layer's parameter, scale the width duck by the layer's "width" parameter
1597                                                 if (param_desc)
1598                                                 {
1599                                                         ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_hint()).get_value(get_time()));
1600                                                         if(value.same_type_as(synfig::Real()))
1601                                                                 width->set_scalar(value.get(synfig::Real())*0.5f);
1602                                                         // if it doesn't have a "width" parameter, scale by 0.5f instead
1603                                                         else
1604                                                                 width->set_scalar(0.5f);
1605                                                 }
1606                                                 // otherwise just present the raw unscaled width
1607                                                 else
1608                                                         width->set_scalar(0.5f);
1609                                         }
1610                                         else
1611                                                 synfig::error("Unable to add width duck!");
1612                                 }
1613
1614                                 // each bezier uses t2 of one point and t1 of the next
1615                                 // the first time through this loop we won't have the t2 duck from the previous vertex
1616                                 // and so we don't make a bezier.  instead we skip on to t2 for this point
1617                                 if(bezier)
1618                                 {
1619                                         // Add the tangent1 duck
1620                                         if(composite_vertex_value_node)
1621                                         {
1622                                                 if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1623                                                         return false;
1624                                                 tduck=last_duck();
1625                                         }
1626                                         else
1627                                         {
1628                                                 tduck=new Duck(bline_point.get_tangent1());
1629                                                 tduck->set_transform_stack(transform_stack);
1630                                                 tduck->set_editable(false);
1631                                                 tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t1");
1632 //                                              tduck->set_name(strprintf("%x-tangent1",value_node->get_link(i).get()));
1633                                                 tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t1"));
1634                                                 tduck=add_similar_duck(tduck);
1635 //                                              add_duck(duck);
1636                                         }
1637
1638                                         tduck->set_origin(duck);
1639                                         tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1640                                         tduck->set_tangent(true);
1641
1642                                         bezier->p2=duck;
1643                                         bezier->c2=tduck;
1644
1645                                         bezier->signal_user_click(2).connect(
1646                                                 sigc::bind(
1647                                                         sigc::mem_fun(
1648                                                                 *canvas_view,
1649                                                                 &studio::CanvasView::popup_param_menu_bezier),
1650                                                         synfigapp::ValueDesc(value_node,i)));
1651
1652                                         duck->signal_user_click(2).clear();
1653                                         duck->signal_user_click(2).connect(
1654                                                 sigc::bind(
1655                                                         sigc::bind(
1656                                                                 sigc::bind(
1657                                                                         sigc::mem_fun(
1658                                                                                 *canvas_view,
1659                                                                                 &studio::CanvasView::popup_param_menu),
1660                                                                         false),
1661                                                                 1.0f),
1662                                                         synfigapp::ValueDesc(value_node,i)));
1663
1664                                         add_bezier(bezier);
1665                                         bezier=0;
1666                                 }
1667
1668                                 // don't start a new bezier for the last point in the line if we're not looped
1669                                 if(i+1>=value_node->link_count() && !value_node->get_loop())
1670                                         continue;
1671
1672                                 bezier=new Bezier();
1673
1674                                 // Add the tangent2 duck
1675                                 if(composite_vertex_value_node)
1676                                 {
1677                                         int i=bline_point.get_split_tangent_flag()?5:4;
1678                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,i),canvas_view,transform_stack,0,2))
1679                                                 return false;
1680                                         tduck=last_duck();
1681                                 }
1682                                 else
1683                                 {
1684                                         if(bline_point.get_split_tangent_flag())
1685                                                 tduck=new Duck(bline_point.get_tangent2());
1686                                         else
1687                                                 tduck=new Duck(bline_point.get_tangent1());
1688
1689                                         tduck->set_transform_stack(transform_stack);
1690                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,i))+".t2");
1691                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,i),transform_stack)^synfig::GUID::hasher(".t2"));
1692                                         tduck->set_editable(false);
1693                                         tduck=add_similar_duck(tduck);
1694 //                                      add_duck(duck);
1695                                         if(param_desc)
1696                                         {
1697                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1698                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1699                                                                 duck->set_origin(last_duck());
1700 /*
1701                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1702                                                                 if(value.same_type_as(synfig::Point()))
1703                                                                         duck->set_origin(value.get(synfig::Point()));
1704 */
1705 //                                              if(!param_desc->get_origin().empty())
1706 //                                                      duck->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1707                                         }
1708                                         duck->signal_user_click(2).clear();
1709                                         duck->signal_user_click(2).connect(
1710                                                 sigc::bind(
1711                                                         sigc::bind(
1712                                                                 sigc::bind(
1713                                                                         sigc::mem_fun(
1714                                                                                 *canvas_view,
1715                                                                                 &studio::CanvasView::popup_param_menu),
1716                                                                         false),
1717                                                                 1.0f),
1718                                                         synfigapp::ValueDesc(value_node,i)));
1719
1720                                 }
1721
1722                                 tduck->set_origin(duck);
1723                                 tduck->set_scalar(TANGENT_BEZIER_SCALE);
1724                                 tduck->set_tangent(true);
1725
1726                                 bezier->p1=duck;
1727                                 bezier->c1=tduck;
1728                         }
1729
1730                         // Loop if necessary
1731                         if(bezier && value_node->get_loop())
1732                         {
1733                                 BLinePoint bline_point((*value_node->get_link(first))(get_time()));
1734
1735                                 ValueNode_Composite::Handle composite_vertex_value_node(
1736                                         ValueNode_Composite::Handle::cast_dynamic(
1737                                                 value_node->get_link(first)));
1738
1739                                 // Add the vertex duck
1740                                 duck=first_duck;
1741
1742                                 // Add the tangent1 duck
1743                                 if(composite_vertex_value_node)
1744                                 {
1745                                         if(!add_to_ducks(synfigapp::ValueDesc(composite_vertex_value_node,4),canvas_view,transform_stack))
1746                                                 return false;
1747                                         tduck=last_duck();
1748                                 }
1749                                 else
1750                                 {
1751                                         tduck=new Duck(bline_point.get_tangent1());
1752                                         tduck->set_transform_stack(transform_stack);
1753                                         tduck->set_editable(false);
1754                                         tduck->set_name(guid_string(synfigapp::ValueDesc(value_node,first))+".t1");
1755                                         //tduck->set_name(strprintf("%x-tangent1",value_node->get_link(first).get()));
1756                                         tduck=add_similar_duck(tduck);
1757                                         tduck->set_guid(calc_duck_guid(synfigapp::ValueDesc(value_node,first),transform_stack)^synfig::GUID::hasher(".t1"));
1758                                         //add_duck(duck);
1759                                 }
1760
1761                                 tduck->set_origin(duck);
1762                                 tduck->set_scalar(-TANGENT_BEZIER_SCALE);
1763                                 tduck->set_tangent(true);
1764
1765                                 bezier->p2=duck;
1766                                 bezier->c2=tduck;
1767
1768                                 bezier->signal_user_click(2).connect(
1769                                         sigc::bind(
1770                                                 sigc::mem_fun(
1771                                                         *canvas_view,
1772                                                         &studio::CanvasView::popup_param_menu_bezier),
1773                                                 synfigapp::ValueDesc(value_node,first)));
1774
1775                                 duck->signal_user_click(2).clear();
1776                                 duck->signal_user_click(2).connect(
1777                                         sigc::bind(
1778                                                 sigc::bind(
1779                                                         sigc::bind(
1780                                                                 sigc::mem_fun(
1781                                                                         *canvas_view,
1782                                                                         &studio::CanvasView::popup_param_menu),
1783                                                                 false),
1784                                                         1.0f),
1785                                                 synfigapp::ValueDesc(value_node,first)));
1786
1787                                 add_bezier(bezier);
1788                                 bezier=0;
1789                         }
1790                         return true;
1791                 }
1792                 else // Check for DynamicList
1793                 if(value_desc.is_value_node() &&
1794                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node()))
1795                 {
1796                         ValueNode_DynamicList::Handle value_node;
1797                         value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node());
1798                         int i;
1799
1800                         if(value_node->get_contained_type()==ValueBase::TYPE_VECTOR)
1801                         {
1802                                 Bezier bezier;
1803                                 etl::handle<Duck> first_duck, duck;
1804                                 int first = -1;
1805                                 for(i=0;i<value_node->link_count();i++)
1806                                 {
1807                                         if(!value_node->list[i].status_at_time(get_time()))
1808                                                 continue;
1809                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1810                                                 return false;
1811                                         duck = last_duck();
1812
1813                                         // remember the index of the first vertex we didn't skip
1814                                         if (first == -1)
1815                                         {
1816                                                 first = i;
1817                                                 first_duck = duck;
1818                                         }
1819
1820                                         if(param_desc)
1821                                         {
1822                                                                 synfigapp::ValueDesc value_desc_origin(value_desc.get_layer(),param_desc->get_origin());
1823                                                                 add_to_ducks(value_desc_origin,canvas_view, transform_stack);
1824                                                                 duck->set_origin(last_duck());
1825 /*
1826                                                                 ValueBase value(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()));
1827                                                                 if(value.same_type_as(synfig::Point()))
1828                                                                         duck->set_origin(value.get(synfig::Point()));
1829 */
1830 //                                              if(!param_desc->get_origin().empty())
1831 //                                                      last_duck()->set_origin(synfigapp::ValueDesc(value_desc.get_layer(),param_desc->get_origin()).get_value(get_time()).get(synfig::Point()));
1832                                         }
1833                                         duck->set_type(Duck::TYPE_VERTEX);
1834                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1835                                         bezier.p2=bezier.c2=duck;
1836
1837                                         if (first != i)
1838                                         {
1839                                                 handle<Bezier> bezier_(new Bezier());
1840                                                 bezier_->p1=bezier.p1;
1841                                                 bezier_->c1=bezier.c1;
1842                                                 bezier_->p2=bezier.p2;
1843                                                 bezier_->c2=bezier.c2;
1844                                                 add_bezier(bezier_);
1845                                                 last_bezier()->signal_user_click(2).connect(
1846                                                         sigc::bind(
1847                                                                 sigc::mem_fun(
1848                                                                         *canvas_view,
1849                                                                         &studio::CanvasView::popup_param_menu_bezier),
1850                                                                 synfigapp::ValueDesc(value_node,i)));
1851                                         }
1852                                 }
1853
1854                                 if (value_node->get_loop() && first != -1 && first_duck != duck)
1855                                 {
1856                                         duck = first_duck;
1857
1858                                         bezier.p1=bezier.p2;bezier.c1=bezier.c2;
1859                                         bezier.p2=bezier.c2=duck;
1860
1861                                         handle<Bezier> bezier_(new Bezier());
1862                                         bezier_->p1=bezier.p1;
1863                                         bezier_->c1=bezier.c1;
1864                                         bezier_->p2=bezier.p2;
1865                                         bezier_->c2=bezier.c2;
1866                                         add_bezier(bezier_);
1867                                         last_bezier()->signal_user_click(2).connect(
1868                                                 sigc::bind(
1869                                                         sigc::mem_fun(
1870                                                                 *canvas_view,
1871                                                                 &studio::CanvasView::popup_param_menu_bezier),
1872                                                         synfigapp::ValueDesc(value_node,first)));
1873                                 }
1874                         }
1875                         else if(value_node->get_contained_type()==ValueBase::TYPE_SEGMENT)
1876                         {
1877                                 for(i=0;i<value_node->link_count();i++)
1878                                 {
1879                                         if(!value_node->list[i].status_at_time(get_time()))
1880                                                 continue;
1881                                         if(!add_to_ducks(synfigapp::ValueDesc(value_node,i),canvas_view,transform_stack))
1882                                                 return false;
1883                                 }
1884                         }
1885                         else
1886                                 return false;
1887                 }
1888                 else
1889                 {
1890                         // WRITEME
1891                 }
1892
1893                 return true;
1894         }
1895
1896         break;
1897         default:
1898                 break;
1899         }
1900         return false;
1901 }