synfig-core/trunk/src/synfig/valuenode.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file valuenode.cpp
   3 **      \brief Implementation of the "Placeholder" valuenode conversion.
   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 **  Copyright (c) 2008 Carlos López
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #define SYNFIG_NO_ANGLE
  28
  29 //#define HAS_HASH_MAP 1
  30
  31 #ifdef USING_PCH
  32 #       include "pch.h"
  33 #else
  34 #ifdef HAVE_CONFIG_H
  35 #       include <config.h>
  36 #endif
  37
  38 #include "valuenode.h"
  39 #include "general.h"
  40 #include "canvas.h"
  41 #include "paramdesc.h"
  42 #include "releases.h"
  43
  44 #include "valuenode_const.h"
  45 #include "valuenode_linear.h"
  46 #include "valuenode_composite.h"
  47 #include "valuenode_reference.h"
  48 #include "valuenode_greyed.h"
  49 #include "valuenode_scale.h"
  50 #include "valuenode_blinecalctangent.h"
  51 #include "valuenode_blinecalcvertex.h"
  52 #include "valuenode_blinecalcwidth.h"
  53 #include "valuenode_blinereversetangent.h"
  54 #include "valuenode_segcalctangent.h"
  55 #include "valuenode_segcalcvertex.h"
  56 #include "valuenode_repeat_gradient.h"
  57 #include "valuenode_stripes.h"
  58 #include "valuenode_range.h"
  59 #include "valuenode_add.h"
  60 #include "valuenode_subtract.h"
  61 #include "valuenode_timedswap.h"
  62 #include "valuenode_twotone.h"
  63 #include "valuenode_bline.h"
  64 #include "valuenode_dynamiclist.h"
  65 #include "valuenode_radialcomposite.h"
  66 #include "valuenode_gradientrotate.h"
  67 #include "valuenode_sine.h"
  68 #include "valuenode_cos.h"
  69 #include "valuenode_atan2.h"
  70 #include "valuenode_exp.h"
  71 #include "valuenode_switch.h"
  72 #include "valuenode_timeloop.h"
  73 #include "valuenode_reciprocal.h"
  74 #include "valuenode_duplicate.h"
  75 #include "valuenode_integer.h"
  76 #include "valuenode_step.h"
  77 #include "valuenode_vectorangle.h"
  78 #include "valuenode_vectorlength.h"
  79 #include "valuenode_vectorx.h"
  80 #include "valuenode_vectory.h"
  81 #include "valuenode_gradientcolor.h"
  82 #include "valuenode_dotproduct.h"
  83 #include "valuenode_timestring.h"
  84 #include "valuenode_realstring.h"
  85 #include "valuenode_join.h"
  86 #include "valuenode_anglestring.h"
  87 #include "valuenode_intstring.h"
  88 #include "valuenode_log.h"
  89
  90 #include "layer.h"
  91
  92 #endif
  93
  94 /* === U S I N G =========================================================== */
  95
  96 using namespace std;
  97 using namespace etl;
  98 using namespace synfig;
  99
 100 /* === M A C R O S ========================================================= */
 101
 102 /* === G L O B A L S ======================================================= */
 103
 104 static int value_node_count(0);
 105
 106 static LinkableValueNode::Book *book_;
 107
 108
 109 ValueNode::LooseHandle
 110 synfig::find_value_node(const GUID& guid)
 111 {
 112         return guid_cast<ValueNode>(guid);
 113 }
 114
 115 /* === P R O C E D U R E S ================================================= */
 116
 117 /* === M E T H O D S ======================================================= */
 118
 119 bool
 120 ValueNode::subsys_init()
 121 {
 122         book_=new LinkableValueNode::Book();
 123
 124 #define ADD_VALUENODE(class,name,local,version)                                                                                                 \
 125         (*book_)[name].factory=reinterpret_cast<LinkableValueNode::Factory>(&class::create);            \
 126         (*book_)[name].check_type=&class::check_type;                                                                                           \
 127         (*book_)[name].local_name=local;                                                                                                                        \
 128         (*book_)[name].release_version=version
 129
 130 #define ADD_VALUENODE2(class,name,local,version)                                                                                                \
 131         (*book_)[name].factory=reinterpret_cast<LinkableValueNode::Factory>(&class::create_from);       \
 132         (*book_)[name].check_type=&class::check_type;                                                                                           \
 133         (*book_)[name].local_name=local;                                                                                                                        \
 134         (*book_)[name].release_version=version
 135
 136         ADD_VALUENODE(ValueNode_Linear,                   "linear",                       _("Linear"),                   RELEASE_VERSION_0_61_06);
 137         ADD_VALUENODE(ValueNode_Composite,                "composite",            _("Composite"),                RELEASE_VERSION_0_61_06);
 138         ADD_VALUENODE(ValueNode_RadialComposite,  "radial_composite", _("Radial Composite"), RELEASE_VERSION_0_61_06);
 139         ADD_VALUENODE(ValueNode_Reference,                "reference",            _("Reference"),                RELEASE_VERSION_0_61_06);
 140         ADD_VALUENODE(ValueNode_Scale,                    "scale",                        _("Scale"),                    RELEASE_VERSION_0_61_06);
 141         ADD_VALUENODE(ValueNode_SegCalcTangent,   "segcalctangent",       _("Segment Tangent"),  RELEASE_VERSION_0_61_06);
 142         ADD_VALUENODE(ValueNode_SegCalcVertex,    "segcalcvertex",        _("Segment Vertex"),   RELEASE_VERSION_0_61_06);
 143         ADD_VALUENODE(ValueNode_Stripes,                  "stripes",              _("Stripes"),                  RELEASE_VERSION_0_61_06);
 144         ADD_VALUENODE(ValueNode_Subtract,                 "subtract",             _("Subtract"),                 RELEASE_VERSION_0_61_06);
 145         ADD_VALUENODE(ValueNode_TwoTone,                  "twotone",              _("Two-Tone"),                 RELEASE_VERSION_0_61_06);
 146         ADD_VALUENODE(ValueNode_BLine,                    "bline",                        _("BLine"),                    RELEASE_VERSION_0_61_06);
 147         ADD_VALUENODE2(ValueNode_DynamicList,     "dynamic_list",         _("Dynamic List"),     RELEASE_VERSION_0_61_06);
 148         ADD_VALUENODE(ValueNode_GradientRotate,   "gradient_rotate",  _("Gradient Rotate"),      RELEASE_VERSION_0_61_06);
 149         ADD_VALUENODE(ValueNode_Sine,                     "sine",                         _("Sine"),                     RELEASE_VERSION_0_61_06);
 150
 151         ADD_VALUENODE(ValueNode_TimedSwap,                "timed_swap",           _("Timed Swap"),               RELEASE_VERSION_0_61_07); // SVN r610
 152         ADD_VALUENODE(ValueNode_Repeat_Gradient,  "repeat_gradient",  _("Repeat Gradient"),      RELEASE_VERSION_0_61_07); // SVN r666
 153         ADD_VALUENODE(ValueNode_Exp,                      "exp",                          _("Exponential"),              RELEASE_VERSION_0_61_07); // SVN r739
 154         ADD_VALUENODE(ValueNode_Add,                      "add",                          _("Add"),                              RELEASE_VERSION_0_61_07); // SVN r742
 155         ADD_VALUENODE(ValueNode_BLineCalcTangent, "blinecalctangent", _("BLine Tangent"),        RELEASE_VERSION_0_61_07); // SVN r744
 156         ADD_VALUENODE(ValueNode_BLineCalcVertex,  "blinecalcvertex",  _("BLine Vertex"),         RELEASE_VERSION_0_61_07); // SVN r744
 157         ADD_VALUENODE(ValueNode_Range,                    "range",                        _("Range"),                    RELEASE_VERSION_0_61_07); // SVN r776
 158
 159         ADD_VALUENODE(ValueNode_Switch,                   "switch",                       _("Switch"),                   RELEASE_VERSION_0_61_08); // SVN r923
 160         ADD_VALUENODE(ValueNode_Cos,                      "cos",                          _("Cos"),                              RELEASE_VERSION_0_61_08); // SVN r1111
 161         ADD_VALUENODE(ValueNode_Atan2,                    "atan2",                        _("aTan2"),                    RELEASE_VERSION_0_61_08); // SVN r1132
 162         ADD_VALUENODE(ValueNode_BLineRevTangent,  "blinerevtangent",  _("Reverse Tangent"),      RELEASE_VERSION_0_61_08); // SVN r1162
 163         ADD_VALUENODE(ValueNode_TimeLoop,                 "timeloop",             _("Time Loop"),                RELEASE_VERSION_0_61_08); // SVN r1226
 164         ADD_VALUENODE(ValueNode_Reciprocal,               "reciprocal",           _("Reciprocal"),               RELEASE_VERSION_0_61_08); // SVN r1238
 165         ADD_VALUENODE(ValueNode_Duplicate,                "duplicate",            _("Duplicate"),                RELEASE_VERSION_0_61_08); // SVN r1267
 166         ADD_VALUENODE(ValueNode_Integer,                  "fromint",              _("From Integer"),     RELEASE_VERSION_0_61_08); // SVN r1267
 167         ADD_VALUENODE(ValueNode_Step,                     "step",                         _("Step"),                     RELEASE_VERSION_0_61_08); // SVN r1691
 168         ADD_VALUENODE(ValueNode_BLineCalcWidth,   "blinecalcwidth",       _("BLine Width"),              RELEASE_VERSION_0_61_08); // SVN r1694
 169
 170         ADD_VALUENODE(ValueNode_VectorAngle,      "vectorangle",          _("Vector Angle"),     RELEASE_VERSION_0_61_09); // SVN r1880
 171         ADD_VALUENODE(ValueNode_VectorLength,     "vectorlength",         _("Vector Length"),    RELEASE_VERSION_0_61_09); // SVN r1881
 172         ADD_VALUENODE(ValueNode_VectorX,                  "vectorx",              _("Vector X"),                 RELEASE_VERSION_0_61_09); // SVN r1882
 173         ADD_VALUENODE(ValueNode_VectorY,                  "vectory",              _("Vector Y"),                 RELEASE_VERSION_0_61_09); // SVN r1882
 174         ADD_VALUENODE(ValueNode_GradientColor,    "gradientcolor",        _("Gradient Color"),   RELEASE_VERSION_0_61_09); // SVN r1885
 175         ADD_VALUENODE(ValueNode_DotProduct,               "dotproduct",           _("Dot Product"),              RELEASE_VERSION_0_61_09); // SVN r1891
 176         ADD_VALUENODE(ValueNode_TimeString,               "timestring",           _("Time String"),              RELEASE_VERSION_0_61_09); // SVN r2000
 177         ADD_VALUENODE(ValueNode_RealString,               "realstring",           _("Real String"),              RELEASE_VERSION_0_61_09); // SVN r2003
 178         ADD_VALUENODE(ValueNode_Join,                     "join",                         _("Joined List"),              RELEASE_VERSION_0_61_09); // SVN r2007
 179         ADD_VALUENODE(ValueNode_AngleString,      "anglestring",          _("Angle String"),     RELEASE_VERSION_0_61_09); // SVN r2010
 180         ADD_VALUENODE(ValueNode_IntString,                "intstring",            _("Int String"),               RELEASE_VERSION_0_61_09); // SVN r2010
 181         ADD_VALUENODE(ValueNode_Logarithm,                "logarithm",            _("Logarithm"),                RELEASE_VERSION_0_61_09); // SVN r2034
 182
 183         ADD_VALUENODE(ValueNode_Greyed,                   "greyed",                       _("Greyed"),                   RELEASE_VERSION_0_61_10); // SVN r2305
 184
 185 #undef ADD_VALUENODE
 186 #undef ADD_VALUENODE2
 187
 188         return true;
 189 }
 190
 191 bool
 192 ValueNode::subsys_stop()
 193 {
 194         delete book_;
 195 /*      if(global_value_node_map.size() || value_node_count)
 196         {
 197                 if(value_node_count)
 198                         synfig::error("%d ValueNodes haven't been destroyed yet!",value_node_count);
 199
 200                 if(global_value_node_map.size()!=value_node_count)
 201                         synfig::error("value node count mismatch! map.size()!=value_node_count (%d!=%d)",global_value_node_map.size(),value_node_count);
 202
 203                 GlobalValueNodeMap::iterator iter;
 204                 for(iter=global_value_node_map.begin();iter!=global_value_node_map.end();++iter)
 205                 {
 206                         if(!iter->second->is_exported())
 207                                 synfig::info(_("%s: count:%d name:%s type:%s"),
 208                                         iter->first.get_string().c_str(),
 209                                         iter->second->count(),
 210                                         iter->second->get_name().c_str(),
 211                                         ValueBase::type_local_name(iter->second->get_type()).c_str()
 212                                 );
 213                         else
 214                                 synfig::info(_("%s: id:%s count:%d name:%s type:%s"),
 215                                         iter->first.get_string().c_str(),
 216                                         iter->second->get_id().c_str(),
 217                                         iter->second->count(),
 218                                         iter->second->get_name().c_str(),
 219                                         ValueBase::type_local_name(iter->second->get_type()).c_str()
 220                                 );
 221                 }
 222         }
 223 */
 224         return true;
 225 }
 226
 227 ValueNode::ValueNode(ValueBase::Type type):type(type)
 228 {
 229         value_node_count++;
 230 }
 231
 232 LinkableValueNode::Book&
 233 LinkableValueNode::book()
 234 {
 235         return *book_;
 236 }
 237
 238 LinkableValueNode::Handle
 239 LinkableValueNode::create(const String &name, const ValueBase& x)
 240 {
 241         if(!book().count(name))
 242                 return 0;
 243
 244         if (!check_type(name, x.get_type()) &&
 245                 // the Duplicate ValueNode is an exception - we don't want the
 246                 // user creating it for themselves, so check_type() fails for
 247                 // it even when it is valid
 248                 !(name == "duplicate" && x.get_type() == ValueBase::TYPE_REAL))
 249         {
 250                 error(_("Bad type: ValueNode '%s' doesn't accept type '%s'"), book()[name].local_name.c_str(), ValueBase::type_local_name(x.get_type()).c_str());
 251                 return 0;
 252         }
 253
 254         return book()[name].factory(x);
 255 }
 256
 257 bool
 258 LinkableValueNode::check_type(const String &name, ValueBase::Type x)
 259 {
 260         if(!book().count(name) || !book()[name].check_type)
 261                 return false;
 262         return book()[name].check_type(x);
 263 }
 264
 265 bool
 266 LinkableValueNode::set_link(int i,ValueNode::Handle x)
 267 {
 268         ValueNode::Handle previous(get_link(i));
 269
 270         if(set_link_vfunc(i,x))
 271         {
 272                 if(previous)
 273                         remove_child(previous.get());
 274                 add_child(x.get());
 275
 276                 if(!x->is_exported() && get_parent_canvas())
 277                 {
 278                         x->set_parent_canvas(get_parent_canvas());
 279                 }
 280                 changed();
 281                 return true;
 282         }
 283         return false;
 284 }
 285
 286 ValueNode::LooseHandle
 287 LinkableValueNode::get_link(int i)const
 288 {
 289         return get_link_vfunc(i);
 290 }
 291
 292 void
 293 LinkableValueNode::unlink_all()
 294 {
 295         for(int i=0;i<link_count();i++)
 296         {
 297                 ValueNode::LooseHandle value_node(get_link(i));
 298                 if(value_node)
 299                         value_node->parent_set.erase(this);
 300         }
 301 }
 302
 303 ValueNode::~ValueNode()
 304 {
 305         value_node_count--;
 306
 307         begin_delete();
 308 }
 309
 310 void
 311 ValueNode::on_changed()
 312 {
 313         etl::loose_handle<Canvas> parent_canvas = get_parent_canvas();
 314         if(parent_canvas)
 315                 do                                              // signal to all the ancestor canvases
 316                         parent_canvas->signal_value_node_changed()(this);
 317                 while (parent_canvas = parent_canvas->parent());
 318         else if(get_root_canvas())
 319                 get_root_canvas()->signal_value_node_changed()(this);
 320
 321         Node::on_changed();
 322 }
 323
 324 int
 325 ValueNode::replace(etl::handle<ValueNode> x)
 326 {
 327         if(x.get()==this)
 328                 return 0;
 329
 330         while(parent_set.size())
 331         {
 332                 (*parent_set.begin())->add_child(x.get());
 333                 (*parent_set.begin())->remove_child(this);
 334                 //x->parent_set.insert(*parent_set.begin());
 335                 //parent_set.erase(parent_set.begin());
 336         }
 337         int r(RHandle(this).replace(x));
 338         x->changed();
 339         return r;
 340 }
 341
 342 void
 343 ValueNode::set_id(const String &x)
 344 {
 345         if(name!=x)
 346         {
 347                 name=x;
 348                 signal_id_changed_();
 349         }
 350 }
 351
 352 String
 353 ValueNode::get_description(bool show_exported_name)const
 354 {
 355         String ret(_("ValueNode"));
 356
 357         if (dynamic_cast<const LinkableValueNode*>(this))
 358                 return (dynamic_cast<const LinkableValueNode*>(this))->get_description(-1, show_exported_name);
 359
 360         if (show_exported_name && !is_exported())
 361                 show_exported_name = false;
 362
 363         if (show_exported_name)
 364                 ret += strprintf(" (%s)", get_id().c_str());
 365
 366         return ret;
 367 }
 368
 369 ValueNodeList::ValueNodeList():
 370         placeholder_count_(0)
 371 {
 372 }
 373
 374 bool
 375 ValueNodeList::count(const String &id)const
 376 {
 377         const_iterator iter;
 378
 379         if(id.empty())
 380                 return false;
 381
 382         for(iter=begin();iter!=end() && id!=(*iter)->get_id();++iter)
 383                 ;
 384
 385         if(iter==end())
 386                 return false;
 387
 388         return true;
 389 }
 390
 391 ValueNode::Handle
 392 ValueNodeList::find(const String &id)
 393 {
 394         iterator iter;
 395
 396         if(id.empty())
 397                 throw Exception::IDNotFound("Empty ID");
 398
 399         for(iter=begin();iter!=end() && id!=(*iter)->get_id();++iter)
 400                 ;
 401
 402         if(iter==end())
 403                 throw Exception::IDNotFound("ValueNode in ValueNodeList: "+id);
 404
 405         return *iter;
 406 }
 407
 408 ValueNode::ConstHandle
 409 ValueNodeList::find(const String &id)const
 410 {
 411         const_iterator iter;
 412
 413         if(id.empty())
 414                 throw Exception::IDNotFound("Empty ID");
 415
 416         for(iter=begin();iter!=end() && id!=(*iter)->get_id();++iter)
 417                 ;
 418
 419         if(iter==end())
 420                 throw Exception::IDNotFound("ValueNode in ValueNodeList: "+id);
 421
 422         return *iter;
 423 }
 424
 425 ValueNode::Handle
 426 ValueNodeList::surefind(const String &id)
 427 {
 428         if(id.empty())
 429                 throw Exception::IDNotFound("Empty ID");
 430
 431         ValueNode::Handle value_node;
 432
 433         try
 434         {
 435                 value_node=find(id);
 436         }
 437         catch(Exception::IDNotFound)
 438         {
 439                 value_node=PlaceholderValueNode::create();
 440                 value_node->set_id(id);
 441                 push_back(value_node);
 442                 placeholder_count_++;
 443         }
 444
 445         return value_node;
 446 }
 447
 448 bool
 449 ValueNodeList::erase(ValueNode::Handle value_node)
 450 {
 451         assert(value_node);
 452
 453         iterator iter;
 454
 455         for(iter=begin();iter!=end();++iter)
 456                 if(value_node.get()==iter->get())
 457                 {
 458                         std::list<ValueNode::RHandle>::erase(iter);
 459                         if(PlaceholderValueNode::Handle::cast_dynamic(value_node))
 460                                 placeholder_count_--;
 461                         return true;
 462                 }
 463         return false;
 464 }
 465
 466 bool
 467 ValueNodeList::add(ValueNode::Handle value_node)
 468 {
 469         if(!value_node)
 470                 return false;
 471         if(value_node->get_id().empty())
 472                 return false;
 473
 474         try
 475         {
 476                 ValueNode::RHandle other_value_node=find(value_node->get_id());
 477                 if(PlaceholderValueNode::Handle::cast_dynamic(other_value_node))
 478                 {
 479                         other_value_node->replace(value_node);
 480                         placeholder_count_--;
 481                         return true;
 482                 }
 483
 484                 return false;
 485         }
 486         catch(Exception::IDNotFound)
 487         {
 488                 push_back(value_node);
 489                 return true;
 490         }
 491
 492         return false;
 493 }
 494
 495 void
 496 ValueNodeList::audit()
 497 {
 498         iterator iter,next;
 499
 500         for(next=begin(),iter=next++;iter!=end();iter=next++)
 501                 if(iter->count()==1)
 502                         std::list<ValueNode::RHandle>::erase(iter);
 503 }
 504
 505
 506 String
 507 PlaceholderValueNode::get_name()const
 508 {
 509         return "placeholder";
 510 }
 511
 512 String
 513 PlaceholderValueNode::get_local_name()const
 514 {
 515         return _("Placeholder");
 516 }
 517
 518 ValueNode*
 519 PlaceholderValueNode::clone(const GUID& deriv_guid)const
 520 {
 521         ValueNode* ret(new PlaceholderValueNode());
 522         ret->set_guid(get_guid()^deriv_guid);
 523         return ret;
 524 }
 525
 526 PlaceholderValueNode::Handle
 527 PlaceholderValueNode::create(ValueBase::Type type)
 528 {
 529         return new PlaceholderValueNode(type);
 530 }
 531
 532 ValueBase
 533 PlaceholderValueNode::operator()(Time /*t*/)const
 534 {
 535         assert(0);
 536         return ValueBase();
 537 }
 538
 539 PlaceholderValueNode::PlaceholderValueNode(ValueBase::Type type):
 540         ValueNode(type)
 541 {
 542 }
 543
 544 ValueNode*
 545 LinkableValueNode::clone(const GUID& deriv_guid)const
 546 {
 547         {
 548                 ValueNode* x(find_value_node(get_guid()^deriv_guid).get());
 549                 if(x)
 550                         return x;
 551         }
 552
 553         int i;
 554         LinkableValueNode *ret=create_new();
 555         ret->set_guid(get_guid()^deriv_guid);
 556
 557         for(i=0;i<link_count();i++)
 558         {
 559                 ValueNode::Handle link=get_link_vfunc(i);
 560                 if(!link->is_exported())
 561                 {
 562                         ValueNode::LooseHandle value_node(find_value_node(link->get_guid()^deriv_guid));
 563                         if(!value_node)
 564                                 value_node=link->clone(deriv_guid);
 565                         ret->set_link(i,value_node);
 566                 }
 567                 else
 568                         ret->set_link(i,link);
 569         }
 570
 571         return ret;
 572 }
 573
 574 String
 575 ValueNode::get_relative_id(etl::loose_handle<const Canvas> x)const
 576 {
 577         assert(is_exported());
 578         assert(canvas_);
 579
 580         if(x.get()==canvas_.get())
 581                 return get_id();
 582
 583         return canvas_->_get_relative_id(x)+':'+get_id();
 584 }
 585
 586 void
 587 ValueNode::set_parent_canvas(etl::loose_handle<Canvas> x)
 588 {
 589         canvas_=x; if(x) root_canvas_=x->get_root();
 590 }
 591
 592 void
 593 ValueNode::set_root_canvas(etl::loose_handle<Canvas> x)
 594 {
 595         root_canvas_=x->get_root();
 596 }
 597
 598 void LinkableValueNode::get_times_vfunc(Node::time_set &set) const
 599 {
 600         ValueNode::LooseHandle  h;
 601
 602         int size = link_count();
 603
 604         //just add it to the set...
 605         for(int i=0; i < size; ++i)
 606         {
 607                 h = get_link(i);
 608
 609                 if(h)
 610                 {
 611                         const Node::time_set &tset = h->get_times();
 612                         set.insert(tset.begin(),tset.end());
 613                 }
 614         }
 615 }
 616
 617 String
 618 LinkableValueNode::get_description(int index, bool show_exported_name)const
 619 {
 620         String description;
 621
 622         if (index == -1)
 623         {
 624                 if (show_exported_name && is_exported())
 625                         description += strprintf(" (%s)", get_id().c_str());
 626         }
 627         else
 628         {
 629                 description = String(":") + link_local_name(index);
 630
 631                 if (show_exported_name)
 632                 {
 633                         ValueNode::LooseHandle link(get_link(index));
 634                         if (link->is_exported())
 635                                 description += strprintf(" (%s)", link->get_id().c_str());
 636                 }
 637         }
 638
 639         const synfig::Node* node = this;
 640         LinkableValueNode::ConstHandle parent_linkable_vn = 0;
 641
 642         // walk up through the valuenodes trying to find the layer at the top
 643         while (!node->parent_set.empty() && !dynamic_cast<const Layer*>(node))
 644         {
 645                 LinkableValueNode::ConstHandle linkable_value_node(dynamic_cast<const LinkableValueNode*>(node));
 646                 if (linkable_value_node)
 647                 {
 648                         String link;
 649                         int cnt = linkable_value_node->link_count();
 650                         for (int i = 0; i < cnt; i++)
 651                                 if (linkable_value_node->get_link(i) == parent_linkable_vn)
 652                                 {
 653                                         link = String(":") + linkable_value_node->link_local_name(i);
 654                                         break;
 655                                 }
 656
 657                         description = linkable_value_node->get_local_name() + link + (parent_linkable_vn?">":"") + description;
 658                 }
 659                 node = *node->parent_set.begin();
 660                 parent_linkable_vn = linkable_value_node;
 661         }
 662
 663         Layer::ConstHandle parent_layer(dynamic_cast<const Layer*>(node));
 664         if(parent_layer)
 665         {
 666                 String param;
 667                 const Layer::DynamicParamList &dynamic_param_list(parent_layer->dynamic_param_list());
 668                 // loop to find the parameter in the dynamic parameter list - this gives us its name
 669                 for (Layer::DynamicParamList::const_iterator iter = dynamic_param_list.begin(); iter != dynamic_param_list.end(); iter++)
 670                         if (iter->second == parent_linkable_vn)
 671                                 param = String(":") + parent_layer->get_param_local_name(iter->first);
 672                 description = strprintf("(%s)%s>%s",
 673                                                                 parent_layer->get_non_empty_description().c_str(),
 674                                                                 param.c_str(),
 675                                                                 description.c_str());
 676         }
 677
 678         return description;
 679 }