synfig-core/src/synfig/loadcanvas.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file loadcanvas.cpp
   3 **      \brief writeme
   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) 2009 Carlos A. Sosa Navarro
  11 **      Copyright (c) 2009 Nikita Kitaev
  12 **
  13 **      This package is free software; you can redistribute it and/or
  14 **      modify it under the terms of the GNU General Public License as
  15 **      published by the Free Software Foundation; either version 2 of
  16 **      the License, or (at your option) any later version.
  17 **
  18 **      This package is distributed in the hope that it will be useful,
  19 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  21 **      General Public License for more details.
  22 **      \endlegal
  23 */
  24 /* ========================================================================= */
  25
  26 /* === H E A D E R S ======================================================= */
  27
  28 #ifdef USING_PCH
  29 #       include "pch.h"
  30 #else
  31 #ifdef HAVE_CONFIG_H
  32 #       include <config.h>
  33 #endif
  34
  35 #include <cstdlib>
  36 #include <cstdio>
  37 #include <cstring>
  38 #include <ETL/stringf>
  39 #include <libxml++/libxml++.h>
  40 #include <vector>
  41 #include <stdexcept>
  42 #include <iostream>
  43
  44 #include "layer_pastecanvas.h"
  45 #include "loadcanvas.h"
  46 #include "valuenode.h"
  47 #include "valuenode_animated.h"
  48 #include "valuenode_composite.h"
  49 #include "valuenode_const.h"
  50 #include "valuenode_linear.h"
  51 #include "valuenode_dynamiclist.h"
  52 #include "valuenode_reference.h"
  53 #include "valuenode_scale.h"
  54 #include "valuenode_timedswap.h"
  55 #include "valuenode_twotone.h"
  56 #include "valuenode_stripes.h"
  57 #include "valuenode_segcalctangent.h"
  58 #include "valuenode_segcalcvertex.h"
  59 #include "valuenode_bline.h"
  60
  61 #include "layer.h"
  62 #include "string.h"
  63
  64 #include "exception.h"
  65
  66 #include "gradient.h"
  67
  68 #include <map>
  69 #include <sigc++/bind.h>
  70
  71 #endif
  72
  73 /* === U S I N G =========================================================== */
  74
  75 using namespace std;
  76 using namespace synfig;
  77 using namespace etl;
  78
  79 /*
  80 class test_class {
  81 static int bleh;
  82 public:
  83         test_class() { assert(!bleh); bleh++; synfig::info("test_class: initi: %d",bleh); }
  84         ~test_class() { assert(bleh); synfig::info("test_class: uninit: %d",bleh); bleh--; }
  85 };
  86 int test_class::bleh(0);
  87
  88 test_class test_class_instance;
  89 */
  90
  91 /* === M A C R O S ========================================================= */
  92
  93 #define VALUENODE_COMPATIBILITY_URL "http://synfig.org/Convert#Compatibility"
  94
  95 inline bool is_whitespace(char x) { return ((x)=='\n' || (x)=='\t' || (x)==' '); }
  96
  97 std::set<String> CanvasParser::loading_;
  98
  99 /* === P R O C E D U R E S ================================================= */
 100
 101 static std::map<String, Canvas::LooseHandle>* open_canvas_map_(0);
 102
 103 std::map<synfig::String, etl::loose_handle<Canvas> >& synfig::get_open_canvas_map()
 104 {
 105         if(!open_canvas_map_)
 106                 open_canvas_map_=new std::map<String, Canvas::LooseHandle>;
 107         return *open_canvas_map_;
 108 }
 109
 110 static void _remove_from_open_canvas_map(Canvas *x) { get_open_canvas_map().erase(etl::absolute_path(x->get_file_name())); }
 111
 112 static void _canvas_file_name_changed(Canvas *x)
 113 {
 114         std::map<synfig::String, etl::loose_handle<Canvas> >::iterator iter;
 115
 116         for(iter=get_open_canvas_map().begin();iter!=get_open_canvas_map().end();++iter)
 117                 if(iter->second==x)
 118                         break;
 119         assert(iter!=get_open_canvas_map().end());
 120         if(iter==get_open_canvas_map().end())
 121                 return;
 122         get_open_canvas_map().erase(iter->first);
 123         get_open_canvas_map()[etl::absolute_path(x->get_file_name())]=x;
 124
 125 }
 126
 127 Canvas::Handle
 128 synfig::open_canvas(const String &filename,String &errors,String &warnings)
 129 {
 130         return open_canvas_as(filename, filename, errors, warnings);
 131 }
 132
 133 Canvas::Handle
 134 synfig::open_canvas_as(const String &filename,const String &as,String &errors,String &warnings)
 135 {
 136         if (CanvasParser::loading_.count(filename))
 137         {
 138                 String warning(strprintf(_("cannot load '%s' recursively"), filename.c_str()));
 139                 synfig::warning(warning);
 140                 warnings = "  * " + warning + "\n";
 141                 Canvas::Handle canvas(Canvas::create());
 142                 canvas->set_file_name(filename);
 143                 Layer::Handle paste(Layer_PasteCanvas::create());
 144                 canvas->push_back(paste);
 145                 paste->set_description(warning);
 146                 return canvas;
 147         }
 148
 149         Canvas::Handle canvas;
 150         CanvasParser parser;
 151         parser.set_allow_errors(true);
 152
 153         try
 154         {
 155                 CanvasParser::loading_.insert(filename);
 156                 canvas=parser.parse_from_file_as(filename,as,errors);
 157         }
 158         catch (...)
 159         {
 160                 CanvasParser::loading_.erase(filename);
 161                 throw;
 162         }
 163         CanvasParser::loading_.erase(filename);
 164
 165         warnings = parser.get_warnings_text();
 166
 167         if(parser.error_count())
 168         {
 169                 errors = parser.get_errors_text();
 170                 return Canvas::Handle();
 171         }
 172
 173         return canvas;
 174 }
 175
 176 /* === M E T H O D S ======================================================= */
 177
 178 void
 179 CanvasParser::error_unexpected_element(xmlpp::Node *element,const String &got, const String &expected)
 180 {
 181         error(element,strprintf(_("Unexpected element <%s>, Expected <%s>"),got.c_str(),expected.c_str()));
 182 }
 183
 184 void
 185 CanvasParser::error_unexpected_element(xmlpp::Node *element,const String &got)
 186 {
 187         error(element,strprintf(_("Unexpected element <%s>"),got.c_str()));
 188 }
 189
 190 void
 191 CanvasParser::warning(xmlpp::Node *element, const String &text)
 192 {
 193         string str=strprintf("%s:<%s>:%d: ",filename.c_str(),element->get_name().c_str(),element->get_line())+text;
 194
 195         synfig::warning(str);
 196         // cerr<<str<<endl;
 197
 198         total_warnings_++;
 199         warnings_text += "  * " + str + "\n";
 200         if(total_warnings_>=max_warnings_)
 201                 fatal_error(element, _("Too many warnings"));
 202 }
 203
 204 void
 205 CanvasParser::error(xmlpp::Node *element, const String &text)
 206 {
 207         string str=strprintf("%s:<%s>:%d: error: ",filename.c_str(),element->get_name().c_str(),element->get_line())+text;
 208         total_errors_++;
 209         errors_text += "  * " + str + "\n";
 210         if(!allow_errors_)
 211                 throw runtime_error(str);
 212         cerr<<str<<endl;
 213         //      synfig::error(str);
 214 }
 215
 216 void
 217 CanvasParser::fatal_error(xmlpp::Node *element, const String &text)
 218 {
 219         string str=strprintf("%s:<%s>:%d:",filename.c_str(),element->get_name().c_str(),element->get_line())+text;
 220         throw runtime_error(str);
 221 }
 222
 223
 224
 225 Keyframe
 226 CanvasParser::parse_keyframe(xmlpp::Element *element,Canvas::Handle canvas)
 227 {
 228         assert(element->get_name()=="keyframe");
 229
 230         if(!element->get_attribute("time"))
 231         {
 232                 error(element,strprintf(_("<%s> is missing \"%s\" attribute"),"real","time"));
 233                 return Keyframe();
 234         }
 235
 236         Keyframe ret(Time(element->get_attribute("time")->get_value(),canvas->rend_desc().get_frame_rate()));
 237
 238
 239         if(element->get_children().empty())
 240                 return ret;
 241
 242         if(element->get_child_text()->get_content().empty())
 243                 return ret;
 244
 245         ret.set_description(element->get_child_text()->get_content());
 246
 247         return ret;
 248 }
 249
 250
 251 Real
 252 CanvasParser::parse_real(xmlpp::Element *element)
 253 {
 254         assert(element->get_name()=="real");
 255
 256         if(!element->get_children().empty())
 257                 warning(element, strprintf(_("<%s> should not contain anything"),"real"));
 258
 259         if(!element->get_attribute("value"))
 260         {
 261                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"real"));
 262                 return false;
 263         }
 264
 265         string val=element->get_attribute("value")->get_value();
 266
 267         return atof(val.c_str());
 268 }
 269
 270 Time
 271 CanvasParser::parse_time(xmlpp::Element *element,Canvas::Handle canvas)
 272 {
 273         assert(element->get_name()=="time");
 274
 275         if(!element->get_children().empty())
 276                 warning(element, strprintf(_("<%s> should not contain anything"),"time"));
 277
 278         if(!element->get_attribute("value"))
 279         {
 280                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"time"));
 281                 return false;
 282         }
 283
 284         string val=element->get_attribute("value")->get_value();
 285
 286         return Time(val,canvas->rend_desc().get_frame_rate());
 287 }
 288
 289 int
 290 CanvasParser::parse_integer(xmlpp::Element *element)
 291 {
 292         assert(element->get_name()=="integer");
 293
 294         if(!element->get_children().empty())
 295                 warning(element, strprintf(_("<%s> should not contain anything"),"integer"));
 296
 297         if(!element->get_attribute("value"))
 298         {
 299                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"integer"));
 300                 return false;
 301         }
 302
 303         string val=element->get_attribute("value")->get_value();
 304
 305         return atoi(val.c_str());
 306 }
 307
 308 // see 'minor hack' at the end of parse_vector() below
 309 // making this 'static' to give it file local scope
 310 // stops it working (where working means working around
 311 // bug #1509627)
 312 Vector &canvas_parser_vector_id(Vector &vector)
 313 {
 314         return vector;
 315 }
 316
 317 Vector
 318 CanvasParser::parse_vector(xmlpp::Element *element)
 319 {
 320         assert(element->get_name()=="vector");
 321
 322         if(element->get_children().empty())
 323         {
 324                 error(element, "Undefined value in <vector>");
 325                 return Vector();
 326         }
 327
 328         Vector vect;
 329
 330         xmlpp::Element::NodeList list = element->get_children();
 331         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 332         {
 333                 xmlpp::Element *child=dynamic_cast<xmlpp::Element*>((xmlpp::Node*)*iter);
 334                 if(!child)
 335                         continue;
 336                 else
 337                 if(child->get_name()=="x")
 338                 {
 339                         if(child->get_children().empty())
 340                         {
 341                                 error(element, "Undefined value in <x>");
 342                                 return Vector();
 343                         }
 344                         vect[0]=atof(child->get_child_text()->get_content().c_str());
 345                 }
 346                 else
 347                 if(child->get_name()=="y")
 348                 {
 349                         if(child->get_children().empty())
 350                         {
 351                                 error(element, "Undefined value in <y>");
 352                                 return Vector();
 353                         }
 354                         vect[1]=atof(child->get_child_text()->get_content().c_str());
 355                 }
 356                 else
 357                         error_unexpected_element(child,child->get_name());
 358         }
 359         // Minor hack - gcc 4.1.2 and earlier think that we're not using
 360         // 'vect' and optimize it out at -O2 and higher.  This convinces
 361         // them that we are really using it.
 362         return canvas_parser_vector_id(vect);
 363         // When the bug is fixed, we can just do this instead:
 364         // return vect;
 365 }
 366
 367 Color
 368 CanvasParser::parse_color(xmlpp::Element *element)
 369 {
 370         assert(element->get_name()=="color");
 371
 372         if(element->get_children().empty())
 373         {
 374                 error(element, "Undefined value in <color>");
 375                 return Color();
 376         }
 377
 378         Color color(0);
 379
 380         xmlpp::Element::NodeList list = element->get_children();
 381         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 382         {
 383                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 384                 if(!child)
 385                         continue;
 386                 else
 387                 if(child->get_name()=="r")
 388                 {
 389                         if(child->get_children().empty())
 390                         {
 391                                 error(element, "Undefined value in <r>");
 392                                 return Color();
 393                         }
 394                         color.set_r(atof(child->get_child_text()->get_content().c_str()));
 395                 }
 396                 else
 397                 if(child->get_name()=="g")
 398                 {
 399                         if(child->get_children().empty())
 400                         {
 401                                 error(element, "Undefined value in <g>");
 402                                 return Color();
 403                         }
 404                         color.set_g(atof(child->get_child_text()->get_content().c_str()));
 405                 }
 406                 else
 407                 if(child->get_name()=="b")
 408                 {
 409                         if(child->get_children().empty())
 410                         {
 411                                 error(element, "Undefined value in <b>");
 412                                 return Color();
 413                         }
 414                         color.set_b(atof(child->get_child_text()->get_content().c_str()));
 415                 }
 416                 else
 417                 if(child->get_name()=="a")
 418                 {
 419                         if(child->get_children().empty())
 420                         {
 421                                 error(element, "Undefined value in <a>");
 422                                 return Color();
 423                         }
 424                         color.set_a(atof(child->get_child_text()->get_content().c_str()));
 425                 }
 426                 else
 427                         error_unexpected_element(child,child->get_name());
 428         }
 429
 430         return color;
 431 }
 432
 433 synfig::String
 434 CanvasParser::parse_string(xmlpp::Element *element)
 435 {
 436         assert(element->get_name()=="string");
 437
 438         if(element->get_children().empty())
 439         {
 440                 warning(element, "Undefined value in <string>");
 441                 return synfig::String();
 442         }
 443
 444         if(element->get_child_text()->get_content().empty())
 445         {
 446                 warning(element, "Content element of <string> appears to be empty");
 447                 return synfig::String();
 448         }
 449
 450         return element->get_child_text()->get_content();
 451 }
 452
 453 bool
 454 CanvasParser::parse_bool(xmlpp::Element *element)
 455 {
 456         assert(element->get_name()=="bool");
 457
 458         if(!element->get_children().empty())
 459                 warning(element, strprintf(_("<%s> should not contain anything"),"bool"));
 460
 461         if(!element->get_attribute("value"))
 462         {
 463                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"bool"));
 464                 return false;
 465         }
 466
 467         string val=element->get_attribute("value")->get_value();
 468
 469         if(val=="true" || val=="1")
 470                 return true;
 471         if(val=="false" || val=="0")
 472                 return false;
 473
 474         error(element,strprintf(_("Bad value \"%s\" in <%s>"),val.c_str(),"bool"));
 475
 476         return false;
 477 }
 478
 479 Gradient
 480 CanvasParser::parse_gradient(xmlpp::Element *node)
 481 {
 482         assert(node->get_name()=="gradient");
 483         Gradient ret;
 484
 485         xmlpp::Element::NodeList list = node->get_children();
 486         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 487         {
 488                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 489                 if(!child)
 490                         continue;
 491                 else
 492                 {
 493                         Gradient::CPoint cpoint;
 494                         cpoint.color=parse_color(child);
 495
 496                         if(!child->get_attribute("pos"))
 497                         {
 498                                 error(child,strprintf(_("<%s> is missing \"pos\" attribute"),"gradient"));
 499                                 return Gradient();
 500                         }
 501
 502                         cpoint.pos=atof(child->get_attribute("pos")->get_value().c_str());
 503
 504                         ret.push_back(cpoint);
 505                 }
 506         }
 507         ret.sort();
 508         return ret;
 509 }
 510
 511 ValueBase
 512 CanvasParser::parse_list(xmlpp::Element *element,Canvas::Handle canvas)
 513 {
 514         vector<ValueBase> value_list;
 515
 516         xmlpp::Element::NodeList list = element->get_children();
 517         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 518         {
 519                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 520                 if(!child)
 521                         continue;
 522                 else
 523                 {
 524                         value_list.push_back(parse_value(child,canvas));
 525                         if(!value_list.back().is_valid())
 526                         {
 527                                 value_list.pop_back();
 528                                 error(child,"Bad ValueBase");
 529                                 continue;
 530                         }
 531                 }
 532         }
 533         return value_list;
 534 }
 535
 536 Segment
 537 CanvasParser::parse_segment(xmlpp::Element *element)
 538 {
 539         assert(element->get_name()=="segment");
 540
 541         if(element->get_children().empty())
 542         {
 543                 error(element, "Undefined value in <segment>");
 544                 return Segment();
 545         }
 546
 547         Segment seg;
 548
 549         xmlpp::Element::NodeList list = element->get_children();
 550         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 551         {
 552                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 553                 if(!child)
 554                         continue;
 555                 else
 556                 if(child->get_name()=="p1")
 557                 {
 558                         xmlpp::Element::NodeList list = child->get_children();
 559                         xmlpp::Element::NodeList::iterator iter;
 560
 561                         // Search for the first non-text XML element
 562                         for(iter = list.begin(); iter != list.end(); ++iter)
 563                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 564
 565                         if(iter==list.end())
 566                         {
 567                                 error(element, "Undefined value in <p1>");
 568                                 continue;
 569                         }
 570
 571                         if((*iter)->get_name()!="vector")
 572                         {
 573                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 574                                 continue;
 575                         }
 576
 577                         seg.p1=parse_vector(dynamic_cast<xmlpp::Element*>(*iter));
 578                 }
 579                 else
 580                 if(child->get_name()=="t1")
 581                 {
 582                         xmlpp::Element::NodeList list = child->get_children();
 583                         xmlpp::Element::NodeList::iterator iter;
 584
 585                         // Search for the first non-text XML element
 586                         for(iter = list.begin(); iter != list.end(); ++iter)
 587                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 588
 589                         if(iter==list.end())
 590                         {
 591                                 error(element, "Undefined value in <t1>");
 592                                 continue;
 593                         }
 594
 595                         if((*iter)->get_name()!="vector")
 596                         {
 597                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 598                                 continue;
 599                         }
 600
 601                         seg.t1=parse_vector(dynamic_cast<xmlpp::Element*>(*iter));
 602                 }
 603                 else
 604                 if(child->get_name()=="p2")
 605                 {
 606                         xmlpp::Element::NodeList list = child->get_children();
 607                         xmlpp::Element::NodeList::iterator iter;
 608
 609                         // Search for the first non-text XML element
 610                         for(iter = list.begin(); iter != list.end(); ++iter)
 611                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 612
 613                         if(iter==list.end())
 614                         {
 615                                 error(element, "Undefined value in <p2>");
 616                                 continue;
 617                         }
 618
 619                         if((*iter)->get_name()!="vector")
 620                         {
 621                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 622                                 continue;
 623                         }
 624
 625                         seg.p2=parse_vector(dynamic_cast<xmlpp::Element*>(*iter));
 626                 }
 627                 else
 628                 if(child->get_name()=="t2")
 629                 {
 630                         xmlpp::Element::NodeList list = child->get_children();
 631                         xmlpp::Element::NodeList::iterator iter;
 632
 633                         // Search for the first non-text XML element
 634                         for(iter = list.begin(); iter != list.end(); ++iter)
 635                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 636
 637                         if(iter==list.end())
 638                         {
 639                                 error(element, "Undefined value in <t2>");
 640                                 continue;
 641                         }
 642
 643                         if((*iter)->get_name()!="vector")
 644                         {
 645                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 646                                 continue;
 647                         }
 648
 649                         seg.t2=parse_vector(dynamic_cast<xmlpp::Element*>(*iter));
 650                 }
 651                 else
 652                         error_unexpected_element(child,child->get_name());
 653         }
 654         return seg;
 655 }
 656
 657 BLinePoint
 658 CanvasParser::parse_bline_point(xmlpp::Element *element)
 659 {
 660         assert(element->get_name()=="bline_point");
 661         if(element->get_children().empty())
 662         {
 663                 error(element, "Undefined value in <bline_point>");
 664                 return BLinePoint();
 665         }
 666
 667         BLinePoint ret;
 668         ret.set_split_tangent_flag(false);
 669
 670         xmlpp::Element::NodeList list = element->get_children();
 671         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 672         {
 673                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 674                 if(!child)
 675                         continue;
 676                 else
 677                 // Vertex
 678                 if(child->get_name()[0]=='v' || child->get_name()=="p1")
 679                 {
 680                         xmlpp::Element::NodeList list = child->get_children();
 681                         xmlpp::Element::NodeList::iterator iter;
 682
 683                         // Search for the first non-text XML element
 684                         for(iter = list.begin(); iter != list.end(); ++iter)
 685                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 686
 687                         if(iter==list.end())
 688                         {
 689                                 error(element, "Undefined value in <vertex>");
 690                                 continue;
 691                         }
 692
 693                         if((*iter)->get_name()!="vector")
 694                         {
 695                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 696                                 continue;
 697                         }
 698
 699                         ret.set_vertex(parse_vector(dynamic_cast<xmlpp::Element*>(*iter)));
 700                 }
 701                 else
 702                 // Tangent 1
 703                 if(child->get_name()=="t1" || child->get_name()=="tangent")
 704                 {
 705                         xmlpp::Element::NodeList list = child->get_children();
 706                         xmlpp::Element::NodeList::iterator iter;
 707
 708                         // Search for the first non-text XML element
 709                         for(iter = list.begin(); iter != list.end(); ++iter)
 710                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 711
 712                         if(iter==list.end())
 713                         {
 714                                 error(element, "Undefined value in <t1>");
 715                                 continue;
 716                         }
 717
 718                         if((*iter)->get_name()!="vector")
 719                         {
 720                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 721                                 continue;
 722                         }
 723
 724                         ret.set_tangent1(parse_vector(dynamic_cast<xmlpp::Element*>(*iter)));
 725                 }
 726                 else
 727                 // Tangent 2
 728                 if(child->get_name()=="t2")
 729                 {
 730                         xmlpp::Element::NodeList list = child->get_children();
 731                         xmlpp::Element::NodeList::iterator iter;
 732
 733                         // Search for the first non-text XML element
 734                         for(iter = list.begin(); iter != list.end(); ++iter)
 735                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 736
 737                         if(iter==list.end())
 738                         {
 739                                 error(element, "Undefined value in <t2>");
 740                                 continue;
 741                         }
 742
 743                         if((*iter)->get_name()!="vector")
 744                         {
 745                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 746                                 continue;
 747                         }
 748
 749                         ret.set_tangent2(parse_vector(dynamic_cast<xmlpp::Element*>(*iter)));
 750                         ret.set_split_tangent_flag(true);
 751                 }
 752                 else
 753                 // width
 754                 if(child->get_name()=="width")
 755                 {
 756                         xmlpp::Element::NodeList list = child->get_children();
 757                         xmlpp::Element::NodeList::iterator iter;
 758
 759                         // Search for the first non-text XML element
 760                         for(iter = list.begin(); iter != list.end(); ++iter)
 761                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 762
 763                         if(iter==list.end())
 764                         {
 765                                 error(element, "Undefined value in <width>");
 766                                 continue;
 767                         }
 768
 769                         if((*iter)->get_name()!="real")
 770                         {
 771                                 error_unexpected_element((*iter),(*iter)->get_name(),"real");
 772                                 continue;
 773                         }
 774
 775                         ret.set_width(parse_real(dynamic_cast<xmlpp::Element*>(*iter)));
 776                 }
 777                 else
 778                 // origin
 779                 if(child->get_name()=="origin")
 780                 {
 781                         xmlpp::Element::NodeList list = child->get_children();
 782                         xmlpp::Element::NodeList::iterator iter;
 783
 784                         // Search for the first non-text XML element
 785                         for(iter = list.begin(); iter != list.end(); ++iter)
 786                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 787
 788                         if(iter==list.end())
 789                         {
 790                                 error(element, "Undefined value in <origin>");
 791                                 continue;
 792                         }
 793
 794                         if((*iter)->get_name()!="real")
 795                         {
 796                                 error_unexpected_element((*iter),(*iter)->get_name(),"real");
 797                                 continue;
 798                         }
 799
 800                         ret.set_origin(parse_real(dynamic_cast<xmlpp::Element*>(*iter)));
 801                 }
 802                 else
 803                         error_unexpected_element(child,child->get_name());
 804         }
 805         return ret;
 806 }
 807
 808 Angle
 809 CanvasParser::parse_angle(xmlpp::Element *element)
 810 {
 811         assert(element->get_name()=="angle");
 812
 813         if(!element->get_children().empty())
 814                 warning(element, strprintf(_("<%s> should not contain anything"),"angle"));
 815
 816         if(!element->get_attribute("value"))
 817         {
 818                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"angle"));
 819                 return Angle();
 820         }
 821
 822         string val=element->get_attribute("value")->get_value();
 823
 824         return Angle::deg(atof(val.c_str()));
 825 }
 826
 827 bool
 828 CanvasParser::parse_static(xmlpp::Element *element)
 829 {
 830         if(!element->get_attribute("static"))
 831                 return false;
 832
 833         string val=element->get_attribute("static")->get_value();
 834
 835         if(val=="true" || val=="1")
 836                 return true;
 837         if(val=="false" || val=="0")
 838                 return false;
 839
 840         error(element,strprintf(_("Bad value \"%s\" in <%s>"),val.c_str(),"bool"));
 841
 842         return false;
 843 }
 844
 845
 846 ValueBase
 847 CanvasParser::parse_value(xmlpp::Element *element,Canvas::Handle canvas)
 848 {
 849         if(element->get_name()=="real")
 850         {
 851                 ValueBase ret;
 852                 ret.set(parse_real(element));
 853                 ret.set_static(parse_static(element));
 854                 return ret;
 855         }
 856         else
 857         if(element->get_name()=="time")
 858                 return parse_time(element,canvas);
 859         else
 860         if(element->get_name()=="integer")
 861                 return parse_integer(element);
 862         else
 863         if(element->get_name()=="string")
 864                 return parse_string(element);
 865         else
 866         if(element->get_name()=="vector")
 867                 return parse_vector(element);
 868         else
 869         if(element->get_name()=="color")
 870                 return parse_color(element);
 871         else
 872         if(element->get_name()=="segment")
 873                 return parse_segment(element);
 874         else
 875         if(element->get_name()=="list")
 876                 return parse_list(element,canvas);
 877         else
 878         if(element->get_name()=="gradient")
 879                 return parse_gradient(element);
 880         else
 881         if(element->get_name()=="bool")
 882                 return parse_bool(element);
 883         else
 884         //if(element->get_name()=="canvas")
 885         //      return parse_canvas(element,canvas,true);       // inline canvas
 886         //else
 887         if(element->get_name()=="angle" || element->get_name()=="degrees" || element->get_name()=="radians" || element->get_name()=="rotations")
 888                 return parse_angle(element);
 889         else
 890         if(element->get_name()=="bline_point")
 891                 return parse_bline_point(element);
 892         else
 893         if(element->get_name()=="canvas")
 894                 return ValueBase(parse_canvas(element,canvas,true));
 895         else
 896         {
 897                 error_unexpected_element(element,element->get_name());
 898         }
 899
 900         return ValueBase();
 901 }
 902
 903
 904
 905
 906 ValueNode_Animated::Handle
 907 CanvasParser::parse_animated(xmlpp::Element *element,Canvas::Handle canvas)
 908 {
 909         assert(element->get_name()=="hermite" || element->get_name()=="animated");
 910
 911         if(!element->get_attribute("type"))
 912         {
 913                 error(element,"Missing attribute \"type\" in <animated>");
 914                 return ValueNode_Animated::Handle();
 915         }
 916
 917         ValueBase::Type type=ValueBase::ident_type(element->get_attribute("type")->get_value());
 918
 919         if(!type)
 920         {
 921                 error(element,"Bad type in <animated>");
 922                 return ValueNode_Animated::Handle();
 923         }
 924
 925         ValueNode_Animated::Handle value_node=ValueNode_Animated::create(type);
 926
 927         if(!value_node)
 928         {
 929                 error(element,strprintf(_("Unable to create <animated> with type \"%s\""),ValueBase::type_local_name(type).c_str()));
 930                 return ValueNode_Animated::Handle();
 931         }
 932
 933         value_node->set_root_canvas(canvas->get_root());
 934
 935         xmlpp::Element::NodeList list = element->get_children();
 936         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 937         {
 938                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 939                 if(!child)
 940                         continue;
 941                 else
 942                 if(child->get_name()=="waypoint")
 943                 {
 944                         if(!child->get_attribute("time"))
 945                         {
 946                                 error(child,_("<waypoint> is missing attribute \"time\""));
 947                                 continue;
 948                         }
 949
 950                         Time time(child->get_attribute("time")->get_value(),canvas->rend_desc().get_frame_rate());
 951
 952
 953                         ValueNode::Handle waypoint_value_node;
 954                         xmlpp::Element::NodeList list = child->get_children();
 955
 956                         if(child->get_attribute("use"))
 957                         {
 958                                 if(!list.empty())
 959                                         warning(child,_("Found \"use\" attribute for <waypoint>, but it wasn't empty. Ignoring contents..."));
 960
 961                                 // the waypoint might look like this, in which case we won't find "mycanvas" in the list of valuenodes, 'cos it's a canvas
 962                                 //
 963                                 //      <animated type="canvas">
 964                                 //        <waypoint time="0s" use="mycanvas"/>
 965                                 //      </animated>
 966                                 if (type==ValueBase::TYPE_CANVAS)
 967                                 {
 968                                         String warnings;
 969                                         waypoint_value_node=ValueNode_Const::create(canvas->surefind_canvas(child->get_attribute("use")->get_value(), warnings));
 970                                         warnings_text += warnings;
 971                                 }
 972                                 else
 973                                         waypoint_value_node=canvas->surefind_value_node(child->get_attribute("use")->get_value());
 974                         }
 975                         else
 976                         {
 977                                 if(child->get_children().empty())
 978                                 {
 979                                         error(child, strprintf(_("<%s> is missing its data"),"waypoint"));
 980                                         continue;
 981                                 }
 982
 983                                 xmlpp::Element::NodeList::iterator iter;
 984
 985                                 // Search for the first non-text XML element
 986                                 for(iter = list.begin(); iter != list.end(); ++iter)
 987                                         if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 988
 989                                 if(iter==list.end())
 990                                 {
 991                                         error(child, strprintf(_("<%s> is missing its data"),"waypoint"));
 992                                         continue;
 993                                 }
 994
 995                                 waypoint_value_node=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 996
 997                                 /*
 998                                 ValueBase data=parse_value(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 999
1000                                 if(!data.is_valid())
1001                                 {
1002                                         error(child,_("Bad data for <waypoint>"));
1003                                         continue;
1004                                 }
1005                                 */
1006                                 if(!waypoint_value_node)
1007                                 {
1008                                         error(child,_("Bad data for <waypoint>"));
1009                                         continue;
1010                                 }
1011
1012                                 /*! HACK -- This is a temporary fix to help repair some
1013                                 **      weirdness that is currently going on (10-21-2004).
1014                                 **      This short circuits the linking of waypoints,
1015                                 **      a feature which is so obscure that we can get
1016                                 **      away with something like this pretty easily.
1017                                 */
1018                                 waypoint_value_node=waypoint_value_node->clone();
1019
1020                                 // Warn if there is trash after the param value
1021                                 for(iter++; iter != list.end(); ++iter)
1022                                         if(dynamic_cast<xmlpp::Element*>(*iter))
1023                                                 warning((*iter),strprintf(_("Unexpected element <%s> after <waypoint> data, ignoring..."),(*iter)->get_name().c_str()));
1024                         }
1025
1026
1027                         try {
1028                                 ValueNode_Animated::WaypointList::iterator waypoint=value_node->new_waypoint(time,waypoint_value_node);
1029
1030                         if(child->get_attribute("tension"))
1031                         {
1032                                 synfig::String str(child->get_attribute("tension")->get_value());
1033                                 waypoint->set_tension(atof(str.c_str()));
1034                         }
1035                         if(child->get_attribute("temporal-tension"))
1036                         {
1037                                 synfig::String str(child->get_attribute("temporal-tension")->get_value());
1038                                 waypoint->set_temporal_tension(atof(str.c_str()));
1039                         }
1040                         if(child->get_attribute("continuity"))
1041                         {
1042                                 synfig::String str(child->get_attribute("continuity")->get_value());
1043                                 waypoint->set_continuity(atof(str.c_str()));
1044                         }
1045                         if(child->get_attribute("bias"))
1046                         {
1047                                 synfig::String str(child->get_attribute("bias")->get_value());
1048                                 waypoint->set_bias(atof(str.c_str()));
1049                         }
1050
1051                         if(child->get_attribute("before"))
1052                         {
1053                                 string val=child->get_attribute("before")->get_value();
1054                                 if(val=="halt")
1055                                         waypoint->set_before(INTERPOLATION_HALT);
1056                                 else if(val=="constant")
1057                                         waypoint->set_before(INTERPOLATION_CONSTANT);
1058                                 else if(val=="linear")
1059                                         waypoint->set_before(INTERPOLATION_LINEAR);
1060                                 else if(val=="manual")
1061                                         waypoint->set_before(INTERPOLATION_MANUAL);
1062                                 else if(val=="auto")
1063                                         waypoint->set_before(INTERPOLATION_TCB);
1064                                 else
1065                                         error(child,strprintf(_("\"%s\" not a valid value for attribute \"%s\" in <%s>"),val.c_str(),"before","waypoint"));
1066                         }
1067
1068                         if(child->get_attribute("after"))
1069                         {
1070                                 string val=child->get_attribute("after")->get_value();
1071                                 if(val=="halt")
1072                                         waypoint->set_after(INTERPOLATION_HALT);
1073                                 else if(val=="constant")
1074                                         waypoint->set_after(INTERPOLATION_CONSTANT);
1075                                 else if(val=="linear")
1076                                         waypoint->set_after(INTERPOLATION_LINEAR);
1077                                 else if(val=="manual")
1078                                         waypoint->set_after(INTERPOLATION_MANUAL);
1079                                 else if(val=="auto")
1080                                         waypoint->set_after(INTERPOLATION_TCB);
1081                                 else
1082                                         error(child,strprintf(_("\"%s\" not a valid value for attribute \"%s\" in <%s>"),val.c_str(),"before","waypoint"));
1083                         }
1084                         }
1085                         catch(Exception::BadTime x)
1086                         {
1087                                 warning(child,x.what());
1088                         }
1089                         continue;
1090
1091                 }
1092                 else
1093                         error_unexpected_element(child,child->get_name());
1094         }
1095
1096         // in canvas version 0.1, angles used to wrap, so to get from -179
1097         // degrees to 180 degrees meant a 1 degree change
1098         // in canvas version 0.2 they don't, so that's a 359 degree change
1099
1100         // when loading a version 0.1 canvas, modify constant angle
1101         // waypoints to that they are within 180 degrees of the previous
1102         // waypoint's value
1103         if (type == ValueBase::TYPE_ANGLE)
1104         {
1105                 if (canvas->get_version() == "0.1")
1106                 {
1107                         bool first = true;
1108                         Real angle, prev = 0;
1109                         WaypointList &wl = value_node->waypoint_list();
1110                         for (WaypointList::iterator iter = wl.begin(); iter != wl.end(); iter++)
1111                         {
1112                                 angle = Angle::deg(iter->get_value(iter->get_time()).get(Angle())).get();
1113                                 if (first)
1114                                         first = false;
1115                                 else if (iter->get_value_node()->get_name() == "constant")
1116                                 {
1117                                         if (angle - prev > 180)
1118                                         {
1119                                                 while (angle - prev > 180) angle -= 360;
1120                                                 iter->set_value(Angle::deg(angle));
1121                                         }
1122                                         else if (prev - angle > 180)
1123                                         {
1124                                                 while (prev - angle > 180) angle += 360;
1125                                                 iter->set_value(Angle::deg(angle));
1126                                         }
1127                                 }
1128                                 prev = angle;
1129                         }
1130                 }
1131         }
1132
1133         value_node->changed();
1134         return value_node;
1135 }
1136
1137 etl::handle<LinkableValueNode>
1138 CanvasParser::parse_linkable_value_node(xmlpp::Element *element,Canvas::Handle canvas)
1139 {
1140         // Determine the type
1141         if(!element->get_attribute("type"))
1142         {
1143                 error(element, strprintf(_("Missing attribute \"type\" in <%s>"), element->get_name().c_str()));
1144                 return 0;
1145         }
1146
1147         ValueBase::Type type=ValueBase::ident_type(element->get_attribute("type")->get_value());
1148
1149         if(!type)
1150         {
1151                 error(element, strprintf(_("Bad type in <%s>"), element->get_name().c_str()));
1152                 return 0;
1153         }
1154
1155         handle<LinkableValueNode> value_node=LinkableValueNode::create(element->get_name(),type);
1156         handle<ValueNode> c[value_node->link_count()];
1157
1158         if(!value_node)
1159         {
1160                 error(element, strprintf(_("Error creating ValueNode <%s> with type '%s'.  Refer to '%s'"),
1161                                                                  element->get_name().c_str(),
1162                                                                  ValueBase::type_local_name(type).c_str(),
1163                                                                  VALUENODE_COMPATIBILITY_URL));
1164                 return 0;
1165         }
1166
1167         if(value_node->get_type()!=type)
1168         {
1169                 error(element, strprintf(_("<%s> did not accept type '%s'"),
1170                                                                  element->get_name().c_str(),
1171                                                                  ValueBase::type_local_name(type).c_str()));
1172                 return 0;
1173         }
1174
1175         value_node->set_root_canvas(canvas->get_root());
1176
1177         // handle exported valuenodes
1178         {
1179                 int index;
1180                 String id, name;
1181                 xmlpp::Element::AttributeList attrib_list(element->get_attributes());
1182                 for(xmlpp::Element::AttributeList::iterator iter = attrib_list.begin(); iter != attrib_list.end(); iter++)
1183                 {
1184                         name = (*iter)->get_name();
1185                         id = (*iter)->get_value();
1186
1187                         if (name == "guid" || name == "id" || name == "type")
1188                                 continue;
1189
1190                         try {
1191                                 index = value_node->get_link_index_from_name(name);
1192
1193                                 if(c[index])
1194                                 {
1195                                         error(element,strprintf(_("'%s' was already defined in <%s>"),
1196                                                                                         name.c_str(),
1197                                                                                         element->get_name().c_str()));
1198                                         continue;
1199                                 }
1200
1201                                 c[index] = canvas->surefind_value_node(id);
1202
1203                                 if (!c[index])
1204                                 {
1205                                         error(element, strprintf(_("'%s' attribute in <%s> references unknown ID '%s'"),
1206                                                                                          name.c_str(),
1207                                                                                          element->get_name().c_str(),
1208                                                                                          id.c_str()));
1209                                         continue;
1210                                 }
1211
1212                                 if(!value_node->set_link(index, c[index]))
1213                                 {
1214                                         error(element, strprintf(_("Unable to set link '\"%s\" to ValueNode \"%s\" (link #%d in \"%s\")"),
1215                                                                                          value_node->link_name(index).c_str(),
1216                                                                                          id.c_str(),
1217                                                                                          index,
1218                                                                                          element->get_name().c_str()));
1219                                         continue;
1220                                 }
1221
1222                                 // printf("  <%s> set link %d (%s) using exported value\n", element->get_name().c_str(), index, name.c_str());
1223                         }
1224                         catch (Exception::BadLinkName)
1225                         {
1226                                 warning(element, strprintf("Bad link name '%s'", name.c_str()));
1227                         }
1228                         catch(Exception::IDNotFound)
1229                         {
1230                                 error(element,"Unable to resolve " + id);
1231                         }
1232                         catch(Exception::FileNotFound)
1233                         {
1234                                 error(element,"Unable to open file referenced in " + id);
1235                         }
1236                         catch(...)
1237                         {
1238                                 error(element,strprintf(_("Unknown Exception thrown when referencing ValueNode \"%s\""), id.c_str()));
1239                                 throw;
1240                         }
1241                 }
1242         }
1243
1244         // handle inline valuenodes
1245         {
1246                 int index;
1247                 String child_name;
1248                 xmlpp::Element::NodeList list = element->get_children();
1249                 for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1250                 {
1251                         xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1252                         try
1253                         {
1254                                 if(!child)
1255                                         continue;
1256
1257                                 child_name = child->get_name();
1258
1259                                 index = value_node->get_link_index_from_name(child_name);
1260
1261                                 if(c[index])
1262                                 {
1263                                         error(child, strprintf(_("'%s' was already defined in <%s>"),
1264                                                                                    child_name.c_str(),
1265                                                                                    element->get_name().c_str()));
1266                                         break;
1267                                 }
1268
1269                                 xmlpp::Element::NodeList list = child->get_children();
1270                                 xmlpp::Element::NodeList::iterator iter;
1271
1272                                 // Search for the first non-text XML element
1273                                 for(iter = list.begin(); iter != list.end(); ++iter)
1274                                         if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1275
1276                                 if(iter==list.end())
1277                                 {
1278                                         error(child,strprintf(_("element <%s> is missing its contents"),
1279                                                                                   child_name.c_str()));
1280                                         continue;
1281                                 }
1282
1283                                 c[index]=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1284
1285                                 if(!c[index])
1286                                 {
1287                                         error((*iter),strprintf(_("Parse of '%s' failed"),
1288                                                                                         child_name.c_str()));
1289                                         continue;
1290                                 }
1291
1292                                 if(!value_node->set_link(index,c[index]))
1293                                 {
1294                                         error(child,strprintf(_("Unable to connect value node ('%s' of type '%s') to link %d (%s)"),
1295                                                                                   c[index]->get_name().c_str(),
1296                                                                                   ValueBase::type_local_name(c[index]->get_type()).c_str(),
1297                                                                                   index,
1298                                                                                   value_node->link_name(index).c_str()));
1299                                         continue;
1300                                 }
1301
1302                                 // \todo do a search for more elements and warn if they are found
1303
1304                                 // printf("  <%s> set link %d (%s) using inline value\n", element->get_name().c_str(), index, child_name.c_str());
1305                         }
1306                         catch(Exception::BadLinkName)
1307                         {
1308                                 warning(child, strprintf("Bad link name for <%s>", element->get_name().c_str()));
1309                         }
1310                         catch(...)
1311                         {
1312                                 error(child, strprintf(_("Unknown Exception thrown when working on element \"%s\""),child_name.c_str()));
1313                                 throw;
1314                         }
1315                 }
1316         }
1317
1318         String version(canvas->get_version());
1319         for (int i = 0; i < value_node->link_count(); i++)
1320         {
1321                 if (!c[i])
1322                 {
1323                         // the 'width' parameter of <stripes> wasn't always present in version 0.1 canvases
1324                         if (version == "0.1" && element->get_name() == "stripes" && value_node->link_name(i) == "width")
1325                                 continue;
1326
1327                         // these 3 blinecalctangent parameters didn't appear until canvas version 0.5
1328                         if ((version == "0.1" || version == "0.2" || version == "0.3" || version == "0.4") &&
1329                                 element->get_name() == "blinecalctangent" &&
1330                                 (value_node->link_name(i) == "offset" ||
1331                                  value_node->link_name(i) == "scale" ||
1332                                  value_node->link_name(i) == "fixed_length"))
1333                                 continue;
1334
1335                         // 'scale' was added while canvas version 0.5 was in use
1336                         if ((version == "0.3" || version == "0.4" || version == "0.5") &&
1337                                 element->get_name() == "blinecalcwidth" &&
1338                                 value_node->link_name(i) == "scale")
1339                                 continue;
1340
1341                         // 'loop' was added while canvas version 0.5 was in use, as was the 'gradientcolor' node type
1342                         if (version == "0.5" &&
1343                                 element->get_name() == "gradientcolor" &&
1344                                 value_node->link_name(i) == "loop")
1345                                 continue;
1346
1347                         // 'loop' was added while canvas version 0.6 was in use; the 'random' node was added back when 0.1 was in use
1348                         if ((version == "0.1" || version == "0.2" || version == "0.3" || version == "0.4" || version == "0.5" || version == "0.6") &&
1349                                 element->get_name() == "random" &&
1350                                 value_node->link_name(i) == "loop")
1351                                 continue;
1352
1353                         error(element, strprintf(_("<%s> is missing link %d (%s)"),
1354                                                                          element->get_name().c_str(),
1355                                                                          i,
1356                                                                          value_node->link_name(i).c_str()));
1357                         return 0;
1358                 }
1359         }
1360
1361         // pre 0.4 canvases had *calctangent outputs scaled down by 0.5 for some reason
1362         if (element->get_name() == "blinecalctangent" || element->get_name() == "segcalctangent")
1363         {
1364                 if (version == "0.1" || version == "0.2" || version == "0.3")
1365                 {
1366                         handle<LinkableValueNode> scale_value_node=LinkableValueNode::create("scale",type);
1367                         scale_value_node->set_link("link", value_node);
1368                         scale_value_node->set_link("scalar", ValueNode_Const::create(Real(0.5)));
1369                         value_node = scale_value_node;
1370                 }
1371         }
1372
1373         return value_node;
1374 }
1375
1376 // This will also parse a bline
1377 handle<ValueNode_DynamicList>
1378 CanvasParser::parse_dynamic_list(xmlpp::Element *element,Canvas::Handle canvas)
1379 {
1380         assert(element->get_name()=="dynamic_list" || element->get_name()=="bline");
1381
1382         const float fps(canvas?canvas->rend_desc().get_frame_rate():0);
1383
1384         if(!element->get_attribute("type"))
1385         {
1386                 error(element,"Missing attribute \"type\" in <dynamic_list>");
1387                 return handle<ValueNode_DynamicList>();
1388         }
1389
1390         ValueBase::Type type=ValueBase::ident_type(element->get_attribute("type")->get_value());
1391
1392         if(!type)
1393         {
1394                 error(element,"Bad type in <dynamic_list>");
1395                 return handle<ValueNode_DynamicList>();
1396         }
1397
1398         handle<ValueNode_DynamicList> value_node;
1399         handle<ValueNode_BLine> bline_value_node;
1400
1401         if(element->get_name()=="bline")
1402         {
1403                 value_node=bline_value_node=ValueNode_BLine::create();
1404                 if(element->get_attribute("loop"))
1405                 {
1406                         String loop=element->get_attribute("loop")->get_value();
1407                         if(loop=="true" || loop=="1" || loop=="TRUE" || loop=="True")
1408                                 bline_value_node->set_loop(true);
1409                         else
1410                                 bline_value_node->set_loop(false);
1411                 }
1412
1413         }
1414         else
1415                 value_node=ValueNode_DynamicList::create(type);
1416
1417         if(!value_node)
1418         {
1419                 error(element,strprintf(_("Unable to create <dynamic_list>")));
1420                 return handle<ValueNode_DynamicList>();
1421         }
1422
1423         value_node->set_root_canvas(canvas->get_root());
1424
1425         xmlpp::Element::NodeList list = element->get_children();
1426         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1427         {
1428                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1429                 if(!child)
1430                         continue;
1431                 else
1432                 if(child->get_name()=="entry")
1433                 {
1434                         ValueNode_DynamicList::ListEntry list_entry;
1435
1436                         // Parse begin/end waypoints
1437                         {
1438                                 typedef synfig::ValueNode_DynamicList::ListEntry::Activepoint Activepoint;
1439                                 typedef synfig::ValueNode_DynamicList::ListEntry::ActivepointList ActivepointList;
1440
1441                                 String begin_sequence;
1442                                 String end_sequence;
1443
1444                                 ActivepointList &timing_info(list_entry.timing_info);
1445
1446                                 if(child->get_attribute("begin"))
1447                                         begin_sequence=child->get_attribute("begin")->get_value();
1448
1449                                 if(child->get_attribute("on"))
1450                                         begin_sequence=child->get_attribute("on")->get_value();
1451
1452                                 if(child->get_attribute("end"))
1453                                         end_sequence=child->get_attribute("end")->get_value();
1454
1455                                 if(child->get_attribute("off"))
1456                                         end_sequence=child->get_attribute("off")->get_value();
1457
1458                                 // clear out any auto-start
1459                                 if(!begin_sequence.empty())
1460                                         timing_info.clear();
1461
1462                                 //! \optimize
1463                                 while(!begin_sequence.empty())
1464                                 {
1465                                         String::iterator iter(find(begin_sequence.begin(),begin_sequence.end(),','));
1466                                         String timecode(begin_sequence.begin(), iter);
1467                                         int priority=0;
1468
1469                                         // skip whitespace before checking for a priority
1470                                         while (isspace(timecode[0]))
1471                                                 timecode=timecode.substr(1);
1472
1473                                         // If there is a priority, then grab it and remove
1474                                         // it from the timecode
1475                                         if(timecode[0]=='p')
1476                                         {
1477                                                 //priority=timecode[1]-'0';
1478                                                 //timecode=String(timecode.begin()+3,timecode.end());
1479                                                 int space=timecode.find_first_of(' ');
1480                                                 priority=atoi(String(timecode,1,space-1).c_str());
1481                                                 timecode=String(timecode.begin()+space+1,timecode.end());
1482                                                 //synfig::info("priority: %d      timecode: %s",priority,timecode.c_str());
1483                                         }
1484
1485                                         timing_info.push_back(
1486                                                 Activepoint(
1487                                                         Time(
1488                                                                 timecode,
1489                                                                 fps
1490                                                         ),
1491                                                         true,   // Mark as a "on" activepoint
1492                                                         priority
1493                                                 )
1494                                         );
1495
1496                                         if(iter==begin_sequence.end())
1497                                                 begin_sequence.clear();
1498                                         else
1499                                                 begin_sequence=String(iter+1,begin_sequence.end());
1500                                 }
1501
1502                                 //! \optimize
1503                                 while(!end_sequence.empty())
1504                                 {
1505                                         String::iterator iter(find(end_sequence.begin(),end_sequence.end(),','));
1506                                         String timecode(end_sequence.begin(),   iter);
1507                                         int priority=0;
1508
1509                                         // skip whitespace before checking for a priority
1510                                         while (isspace(timecode[0]))
1511                                                 timecode=timecode.substr(1);
1512
1513                                         // If there is a priority, then grab it and remove
1514                                         // it from the timecode
1515                                         if(timecode[0]=='p')
1516                                         {
1517                                                 //priority=timecode[1]-'0';
1518                                                 //timecode=String(timecode.begin()+3,timecode.end());
1519                                                 int space=timecode.find_first_of(' ');
1520                                                 priority=atoi(String(timecode,1,space-1).c_str());
1521                                                 timecode=String(timecode.begin()+space+1,timecode.end());
1522                                                 //synfig::info("priority: %d      timecode: %s",priority,timecode.c_str());
1523                                         }
1524
1525                                         timing_info.push_back(
1526                                                 Activepoint(
1527                                                         Time(
1528                                                                 timecode,
1529                                                                 fps
1530                                                         ),
1531                                                         false,  // Mark as a "off" activepoint
1532                                                         priority
1533                                                 )
1534                                         );
1535                                         if(iter==end_sequence.end())
1536                                                 end_sequence.clear();
1537                                         else
1538                                                 end_sequence=String(iter+1,end_sequence.end());
1539                                 }
1540
1541                                 timing_info.sort();
1542                         }
1543
1544                         if(child->get_attribute("use"))
1545                         {
1546                                 // \todo does this need to be able to read 'use="canvas"', like waypoints can now?  (see 'surefind_canvas' in this file)
1547                                 string id=child->get_attribute("use")->get_value();
1548                                 try
1549                                 {
1550                                         list_entry.value_node=canvas->surefind_value_node(id);
1551                                 }
1552                                 catch(Exception::IDNotFound)
1553                                 {
1554                                         error(child,"\"use\" attribute in <entry> references unknown ID -- "+id);
1555                                         continue;
1556                                 }
1557                         }
1558                         else
1559                         {
1560                                 xmlpp::Element::NodeList list = child->get_children();
1561                                 xmlpp::Element::NodeList::iterator iter;
1562
1563                                 // Search for the first non-text XML element
1564                                 for(iter = list.begin(); iter != list.end(); ++iter)
1565                                         if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1566
1567                                 if(iter==list.end())
1568                                 {
1569                                         error(child,strprintf(_("<entry> is missing its contents or missing \"use\" element")));
1570                                         continue;
1571                                 }
1572
1573                                 list_entry.value_node=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1574
1575                                 if(!list_entry.value_node)
1576                                         error((*iter),"Parse of ValueNode failed");
1577
1578                                 // \todo do a search for more elements and warn if they are found
1579
1580                         }
1581
1582                         value_node->add(list_entry);
1583                         value_node->set_link(value_node->link_count()-1,list_entry.value_node);
1584                 }
1585                 else
1586                         error_unexpected_element(child,child->get_name());
1587         }
1588         return value_node;
1589 }
1590
1591 handle<ValueNode>
1592 CanvasParser::parse_value_node(xmlpp::Element *element,Canvas::Handle canvas)
1593 {
1594         handle<ValueNode> value_node;
1595         assert(element);
1596
1597         GUID guid;
1598
1599         if(element->get_attribute("guid"))
1600         {
1601                 guid=GUID(element->get_attribute("guid")->get_value())^canvas->get_root()->get_guid();
1602                 value_node=guid_cast<ValueNode>(guid);
1603                 if(value_node)
1604                         return value_node;
1605         }
1606
1607         // If ValueBase::ident_type() recognizes the name, then we know it's a ValueBase
1608         if(element->get_name()!="canvas" && ValueBase::ident_type(element->get_name()))
1609         {
1610                 ValueBase data=parse_value(element,canvas);
1611
1612                 if(!data.is_valid())
1613                 {
1614                         error(element,strprintf(_("Bad data in <%s>"),element->get_name().c_str()));
1615                         return value_node;
1616                 }
1617
1618                 // We want to convert this ValueBase into a
1619                 // ValueNode_Const. That way, we can treat the
1620                 // ID like any other Datanode. Think of this
1621                 // as a shorthand for creating constant ValueNodes.
1622
1623                 value_node=ValueNode_Const::create(data);
1624         }
1625         else
1626         if(element->get_name()=="hermite" || element->get_name()=="animated")
1627                 value_node=parse_animated(element,canvas);
1628         else
1629         if(element->get_name()=="dynamic_list")
1630                 value_node=parse_dynamic_list(element,canvas);
1631         else
1632         if(element->get_name()=="bline") // This is not a typo. The dynamic list parser will parse a bline.
1633                 value_node=parse_dynamic_list(element,canvas);
1634         else
1635         if(LinkableValueNode::book().count(element->get_name()))
1636         {
1637                 value_node=parse_linkable_value_node(element,canvas);
1638                 if (!value_node) value_node = PlaceholderValueNode::create();
1639         }
1640         else
1641         if(element->get_name()=="canvas")
1642                 value_node=ValueNode_Const::create(parse_canvas(element,canvas,true));
1643         else
1644         {
1645                 error_unexpected_element(element,element->get_name());
1646                 error(element, strprintf(_("Expected a ValueNode.  Refer to '%s'"),
1647                                                                  VALUENODE_COMPATIBILITY_URL));
1648                 value_node=PlaceholderValueNode::create();
1649         }
1650
1651         value_node->set_root_canvas(canvas->get_root());
1652
1653         // If we were successful, and our element has
1654         // an ID attribute, go ahead and add it to the
1655         // value_node list
1656         if(value_node && element->get_attribute("id"))
1657         {
1658                 string id=element->get_attribute("id")->get_value();
1659
1660                 //value_node->set_id(id);
1661
1662                 // If there is already a value_node in the list
1663                 // with the same ID, then that is an error
1664                 try { canvas->add_value_node(value_node,id); }
1665                 catch(Exception::BadLinkName)
1666                 {
1667                         warning(element,strprintf(_("Bad ID \"%s\""),id.c_str()));
1668                         return value_node;
1669                 }
1670                 catch(Exception::IDAlreadyExists)
1671                 {
1672                         error(element,strprintf(_("Duplicate ID \"%s\""),id.c_str()));
1673                         return value_node;
1674                 }
1675                 catch(...)
1676                 {
1677                         error(element,strprintf(_("Unknown Exception thrown when adding ValueNode \"%s\""),id.c_str()));
1678                         throw;
1679                 }
1680         }
1681         value_node->set_guid(guid);
1682         return value_node;
1683 }
1684
1685 void
1686 CanvasParser::parse_canvas_defs(xmlpp::Element *element,Canvas::Handle canvas)
1687 {
1688         assert(element->get_name()=="defs");
1689         xmlpp::Element::NodeList list = element->get_children();
1690         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1691         {
1692                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1693                 if(!child)
1694                         continue;
1695                 else
1696                 if(child->get_name()=="canvas")
1697                         parse_canvas(child, canvas);
1698                 else
1699                         parse_value_node(child,canvas);
1700         }
1701 }
1702
1703 Layer::Handle
1704 CanvasParser::parse_layer(xmlpp::Element *element,Canvas::Handle canvas)
1705 {
1706
1707         assert(element->get_name()=="layer");
1708         Layer::Handle layer;
1709
1710         if(!element->get_attribute("type"))
1711         {
1712                 error(element,_("Missing \"type\" attribute to \"layer\" element"));
1713                 return Layer::Handle();
1714         }
1715
1716         layer=Layer::create(element->get_attribute("type")->get_value());
1717         layer->set_canvas(canvas);
1718
1719         if(element->get_attribute("group"))
1720         {
1721                 layer->add_to_group(
1722                         element->get_attribute("group")->get_value()
1723                 );
1724         }
1725
1726         // Handle the version attribute
1727         if(element->get_attribute("version"))
1728         {
1729                 String version(element->get_attribute("version")->get_value());
1730                 if(version>layer->get_version())
1731                         warning(element,_("Installed layer version is smaller than layer version in file"));
1732                 if(version!=layer->get_version())
1733                         layer->set_version(version);
1734         }
1735
1736         // Handle the description
1737         if(element->get_attribute("desc"))
1738                 layer->set_description(element->get_attribute("desc")->get_value());
1739
1740         if(element->get_attribute("active"))
1741                 layer->set_active(element->get_attribute("active")->get_value()=="false"?false:true);
1742
1743         xmlpp::Element::NodeList list = element->get_children();
1744         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1745         {
1746                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1747                 if(!child)
1748                         continue;
1749                 else
1750                 if(child->get_name()=="name")
1751                         warning(child,_("<name> entry for <layer> is not yet supported. Ignoring..."));
1752                 else
1753                 if(child->get_name()=="desc")
1754                         warning(child,_("<desc> entry for <layer> is not yet supported. Ignoring..."));
1755                 else
1756                 if(child->get_name()=="param")
1757                 {
1758                         xmlpp::Element::NodeList list = child->get_children();
1759
1760                         if(!child->get_attribute("name"))
1761                         {
1762                                 error(child,_("Missing \"name\" attribute for <param>."));
1763                                 continue;
1764                         }
1765
1766                         String param_name=child->get_attribute("name")->get_value();
1767
1768                         // SVN r2013 and r2014 renamed all 'pos' and 'offset' parameters to 'origin'
1769                         // 'pos' and 'offset' will appear in old .sif files; handle them correctly
1770                         if (param_name == "pos" || param_name == "offset")
1771                                 param_name = "origin";
1772
1773                         if(child->get_attribute("use"))
1774                         {
1775                                 // If the "use" attribute is used, then the
1776                                 // element should be empty. Warn the user if
1777                                 // we find otherwise.
1778                                 if(!list.empty())
1779                                         warning(child,_("Found \"use\" attribute for <param>, but it wasn't empty. Ignoring contents..."));
1780
1781                                 String str=     child->get_attribute("use")->get_value();
1782
1783                                 if (str.empty())
1784                                         error(child,_("Empty use=\"\" value in <param>"));
1785                                 else if(layer->get_param(param_name).get_type()==ValueBase::TYPE_CANVAS)
1786                                 {
1787                                         String warnings;
1788                                         Canvas::Handle c(canvas->surefind_canvas(str, warnings));
1789                                         warnings_text += warnings;
1790                                         if(!c) error((*iter),strprintf(_("Failed to load subcanvas '%s'"), str.c_str()));
1791                                         if(!layer->set_param(param_name,c))
1792                                                 error((*iter),_("Layer rejected canvas link"));
1793                                 }
1794                                 else
1795                                 try
1796                                 {
1797                                         handle<ValueNode> value_node=canvas->surefind_value_node(str);
1798
1799                                         // Assign the value_node to the dynamic parameter list
1800                                         if (param_name == "segment_list" && (layer->get_name() == "region" || layer->get_name() == "outline"))
1801                                         {
1802                                                 synfig::warning("%s: Updated valuenode connection to use the \"bline\" parameter instead of \"segment_list\".",
1803                                                                                 layer->get_name().c_str());
1804                                                 param_name = "bline";
1805                                         }
1806                                         layer->connect_dynamic_param(param_name,value_node);
1807                         }
1808                                 catch(Exception::IDNotFound)
1809                                 {
1810                                         error(child,strprintf(_("Unknown ID (%s) referenced in <param>"),str.c_str()));
1811                                 }
1812
1813                                 continue;
1814                         }
1815
1816                         xmlpp::Element::NodeList::iterator iter;
1817
1818                         // Search for the first non-text XML element
1819                         for(iter = list.begin(); iter != list.end(); ++iter)
1820                                 if(dynamic_cast<xmlpp::Element*>(*iter))
1821                                         break;
1822                                 //if(!(!dynamic_cast<xmlpp::Element*>(*iter) && (*iter)->get_name()=="text"||(*iter)->get_name()=="comment"   )) break;
1823
1824                         if(iter==list.end())
1825                         {
1826                                 error(child,_("<param> is either missing its contents, or missing a \"use\" attribute."));
1827                                 continue;
1828                         }
1829
1830                         // If we recognize the element name as a
1831                         // ValueBase, then treat is at one
1832                         if(/*(*iter)->get_name()!="canvas" && */ValueBase::ident_type((*iter)->get_name()) && !dynamic_cast<xmlpp::Element*>(*iter)->get_attribute("guid"))
1833                         {
1834                                 ValueBase data=parse_value(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1835
1836                                 if(!data.is_valid())
1837                                 {
1838                                         error((*iter),_("Bad data for <param>"));
1839                                         continue;
1840                                 }
1841
1842                                 // Set the layer's parameter, and make sure that
1843                                 // the layer liked it
1844                                 if(!layer->set_param(param_name,data))
1845                                 {
1846                                         warning((*iter),strprintf(_("Layer '%s' rejected value for parameter '%s'"),
1847                                                                                           element->get_attribute("type")->get_value().c_str(),
1848                                                                                           param_name.c_str()));
1849                                         continue;
1850                                 }
1851                         }
1852                         else    // ... otherwise, we assume that it is a ValueNode
1853                         {
1854                                 handle<ValueNode> value_node=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1855
1856                                 if(!value_node)
1857                                 {
1858                                         error((*iter),_("Bad data for <param>"));
1859                                         continue;
1860                                 }
1861
1862                                 // Assign the value_node to the dynamic parameter list
1863                                 layer->connect_dynamic_param(param_name,value_node);
1864                         }
1865
1866                         // Warn if there is trash after the param value
1867                         for(iter++; iter != list.end(); ++iter)
1868                                 if(dynamic_cast<xmlpp::Element*>(*iter))
1869                                         warning((*iter),strprintf(_("Unexpected element <%s> after <param> data, ignoring..."),(*iter)->get_name().c_str()));
1870                         continue;
1871                 }
1872                 else
1873                         error_unexpected_element(child,child->get_name());
1874         }
1875
1876         layer->reset_version();
1877         return layer;
1878 }
1879
1880 Canvas::Handle
1881 CanvasParser::parse_canvas(xmlpp::Element *element,Canvas::Handle parent,bool inline_, String filename)
1882 {
1883
1884         if(element->get_name()!="canvas")
1885         {
1886                 error_unexpected_element(element,element->get_name(),"canvas");
1887                 return Canvas::Handle();
1888         }
1889         Canvas::Handle canvas;
1890
1891
1892
1893         if(parent && (element->get_attribute("id") || inline_))
1894         {
1895                 if(inline_)
1896                 {
1897                         canvas=Canvas::create_inline(parent);
1898                 }
1899                 else
1900                 {
1901                         try
1902                         {
1903                                 String warnings;
1904                                 canvas=parent->find_canvas(element->get_attribute("id")->get_value(), warnings);
1905                                 warnings_text += warnings;
1906                         }
1907                         catch(...)
1908                         {
1909                                 canvas=parent->new_child_canvas(element->get_attribute("id")->get_value());
1910                         }
1911                 }
1912                 canvas->rend_desc().clear_flags();
1913         }
1914         else
1915         {
1916                 canvas=Canvas::create();
1917                 if(filename=="/dev/stdin")
1918                         canvas->set_file_name("./stdin.sif");
1919                 else
1920                         canvas->set_file_name(filename);
1921                 canvas->rend_desc().clear_flags();
1922         }
1923
1924         if(element->get_attribute("guid"))
1925         {
1926                 GUID guid(element->get_attribute("guid")->get_value());
1927                 if(guid_cast<Canvas>(guid))
1928                         return guid_cast<Canvas>(guid);
1929                 else
1930                         canvas->set_guid(guid);
1931         }
1932
1933         if(element->get_attribute("version"))
1934                 canvas->set_version(element->get_attribute("version")->get_value());
1935         else if(parent)
1936                 canvas->set_version(parent->get_version());
1937
1938         if(element->get_attribute("width"))
1939         {
1940                 int width = atoi(element->get_attribute("width")->get_value().c_str());
1941                 if (width < 1)
1942                         fatal_error(element, _("Canvas with width or height less than one is not allowed"));
1943                 canvas->rend_desc().set_w(width);
1944         }
1945
1946         if(element->get_attribute("height"))
1947         {
1948                 int height = atoi(element->get_attribute("height")->get_value().c_str());
1949                 if (height < 1)
1950                         fatal_error(element, _("Canvas with width or height less than one is not allowed"));
1951                 canvas->rend_desc().set_h(height);
1952         }
1953
1954         if(element->get_attribute("xres"))
1955                 canvas->rend_desc().set_x_res(atof(element->get_attribute("xres")->get_value().c_str()));
1956
1957         if(element->get_attribute("yres"))
1958                 canvas->rend_desc().set_y_res(atof(element->get_attribute("yres")->get_value().c_str()));
1959
1960
1961         if(element->get_attribute("fps"))
1962                 canvas->rend_desc().set_frame_rate(atof(element->get_attribute("fps")->get_value().c_str()));
1963
1964         if(element->get_attribute("start-time"))
1965                 canvas->rend_desc().set_time_start(Time(element->get_attribute("start-time")->get_value(),canvas->rend_desc().get_frame_rate()));
1966
1967         if(element->get_attribute("begin-time"))
1968                 canvas->rend_desc().set_time_start(Time(element->get_attribute("begin-time")->get_value(),canvas->rend_desc().get_frame_rate()));
1969
1970         if(element->get_attribute("end-time"))
1971                 canvas->rend_desc().set_time_end(Time(element->get_attribute("end-time")->get_value(),canvas->rend_desc().get_frame_rate()));
1972
1973         if(element->get_attribute("antialias"))
1974                 canvas->rend_desc().set_antialias(atoi(element->get_attribute("antialias")->get_value().c_str()));
1975
1976         if(element->get_attribute("view-box"))
1977         {
1978                 string values=element->get_attribute("view-box")->get_value();
1979                 Vector
1980                         tl,
1981                         br;
1982                 tl[0]=atof(string(values.data(),values.find(' ')).c_str());
1983                 values=string(values.begin()+values.find(' ')+1,values.end());
1984                 tl[1]=atof(string(values.data(),values.find(' ')).c_str());
1985                 values=string(values.begin()+values.find(' ')+1,values.end());
1986                 br[0]=atof(string(values.data(),values.find(' ')).c_str());
1987                 values=string(values.begin()+values.find(' ')+1,values.end());
1988                 br[1]=atof(values.c_str());
1989
1990                 canvas->rend_desc().set_tl(tl);
1991                 canvas->rend_desc().set_br(br);
1992         }
1993
1994         if(element->get_attribute("bgcolor"))
1995         {
1996                 string values=element->get_attribute("bgcolor")->get_value();
1997                 Color bg;
1998
1999                 bg.set_r(atof(string(values.data(),values.find(' ')).c_str()));
2000                 values=string(values.begin()+values.find(' ')+1,values.end());
2001
2002                 bg.set_g(atof(string(values.data(),values.find(' ')).c_str()));
2003                 values=string(values.begin()+values.find(' ')+1,values.end());
2004
2005                 bg.set_b(atof(string(values.data(),values.find(' ')).c_str()));
2006                 values=string(values.begin()+values.find(' ')+1,values.end());
2007
2008                 bg.set_a(atof(values.c_str()));
2009
2010                 canvas->rend_desc().set_bg_color(bg);
2011         }
2012
2013         if(element->get_attribute("focus"))
2014         {
2015                 string values=element->get_attribute("focus")->get_value();
2016                 Vector focus;
2017
2018                 focus[0]=atof(string(values.data(),values.find(' ')).c_str());
2019                 values=string(values.begin()+values.find(' ')+1,values.end());
2020                 focus[1]=atof(values.c_str());
2021
2022                 canvas->rend_desc().set_focus(focus);
2023         }
2024
2025         canvas->rend_desc().set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2026
2027         xmlpp::Element::NodeList list = element->get_children();
2028         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2029         {
2030                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
2031                 if(child)
2032                 {
2033                         if(child->get_name()=="defs")
2034                         {
2035                                 if(canvas->is_inline())
2036                                         error(child,_("Inline canvas cannot have a <defs> section"));
2037                                 parse_canvas_defs(child, canvas);
2038                         }
2039                         else
2040                         if(child->get_name()=="keyframe")
2041                         {
2042                                 if(canvas->is_inline())
2043                                 {
2044                                         warning(child,_("Inline canvas cannot have keyframes"));
2045                                         continue;
2046                                 }
2047
2048                                 canvas->keyframe_list().add(parse_keyframe(child,canvas));
2049                                 canvas->keyframe_list().sync();
2050                         }
2051                         else
2052                         if(child->get_name()=="meta")
2053                         {
2054                                 if(canvas->is_inline())
2055                                 {
2056                                         warning(child,_("Inline canvases cannot have metadata"));
2057                                         continue;
2058                                 }
2059
2060                                 String name,content;
2061
2062                                 if(!child->get_attribute("name"))
2063                                 {
2064                                         warning(child,_("<meta> must have a name"));
2065                                         continue;
2066                                 }
2067
2068                                 if(!child->get_attribute("content"))
2069                                 {
2070                                         warning(child,_("<meta> must have content"));
2071                                         continue;
2072                                 }
2073
2074                                 canvas->set_meta_data(child->get_attribute("name")->get_value(),child->get_attribute("content")->get_value());
2075                         }
2076                         else if(child->get_name()=="name")
2077                         {
2078                                 xmlpp::Element::NodeList list = child->get_children();
2079
2080                                 // If we don't have any name, warn
2081                                 if(list.empty())
2082                                         warning(child,_("blank \"name\" entity"));
2083
2084                                 string tmp;
2085                                 for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2086                                         if(dynamic_cast<xmlpp::TextNode*>(*iter))tmp+=dynamic_cast<xmlpp::TextNode*>(*iter)->get_content();
2087                                 canvas->set_name(tmp);
2088                         }
2089                         else
2090                         if(child->get_name()=="desc")
2091                         {
2092
2093                                 xmlpp::Element::NodeList list = child->get_children();
2094
2095                                 // If we don't have any description, warn
2096                                 if(list.empty())
2097                                         warning(child,_("blank \"desc\" entity"));
2098
2099                                 string tmp;
2100                                 for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2101                                         if(dynamic_cast<xmlpp::TextNode*>(*iter))tmp+=dynamic_cast<xmlpp::TextNode*>(*iter)->get_content();
2102                                 canvas->set_description(tmp);
2103                         }
2104                         else
2105                         if(child->get_name()=="author")
2106                         {
2107
2108                                 xmlpp::Element::NodeList list = child->get_children();
2109
2110                                 // If we don't have any description, warn
2111                                 if(list.empty())
2112                                         warning(child,_("blank \"author\" entity"));
2113
2114                                 string tmp;
2115                                 for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2116                                         if(dynamic_cast<xmlpp::TextNode*>(*iter))tmp+=dynamic_cast<xmlpp::TextNode*>(*iter)->get_content();
2117                                 canvas->set_author(tmp);
2118                         }
2119                         else
2120                         if(child->get_name()=="layer")
2121                         {
2122                                 //if(canvas->is_inline())
2123                                 //      canvas->push_front(parse_layer(child,canvas->parent()));
2124                                 //else
2125                                         canvas->push_front(parse_layer(child,canvas));
2126                         }
2127                         else
2128                                 error_unexpected_element(child,child->get_name());
2129                 }
2130 //              else
2131 //              if((child->get_name()=="text"||child->get_name()=="comment") && child->has_child_text())
2132 //                      continue;
2133         }
2134
2135         if(canvas->value_node_list().placeholder_count())
2136         {
2137                 String nodes;
2138                 for (ValueNodeList::const_iterator iter = canvas->value_node_list().begin(); iter != canvas->value_node_list().end(); iter++)
2139                         if(PlaceholderValueNode::Handle::cast_dynamic(*iter))
2140                         {
2141                                 if (nodes != "") nodes += ", ";
2142                                 nodes += "'" + (*iter)->get_id() + "'";
2143                         }
2144                 error(element,strprintf(_("Canvas '%s' has undefined %s: %s"),
2145                                                                 canvas->get_id().c_str(),
2146                                                                 canvas->value_node_list().placeholder_count() == 1 ? _("ValueNode") : _("ValueNodes"),
2147                                                                 nodes.c_str()));
2148         }
2149
2150         canvas->set_version(CURRENT_CANVAS_VERSION);
2151         return canvas;
2152 }
2153
2154 void
2155 CanvasParser::register_canvas_in_map(Canvas::Handle canvas, String as)
2156 {
2157         get_open_canvas_map()[etl::absolute_path(as)]=canvas;
2158         canvas->signal_deleted().connect(sigc::bind(sigc::ptr_fun(_remove_from_open_canvas_map),canvas.get()));
2159         canvas->signal_file_name_changed().connect(sigc::bind(sigc::ptr_fun(_canvas_file_name_changed),canvas.get()));
2160 }
2161
2162 #ifdef _DEBUG
2163 void
2164 CanvasParser::show_canvas_map(String file, int line, String text)
2165 {
2166         return;
2167         printf("  .-----\n  |  %s:%d %s\n", file.c_str(), line, text.c_str());
2168         std::map<synfig::String, etl::loose_handle<Canvas> > canvas_map(synfig::get_open_canvas_map());
2169         std::map<synfig::String, etl::loose_handle<Canvas> >::iterator iter;
2170         for (iter = canvas_map.begin(); iter != canvas_map.end(); iter++)
2171         {
2172                 synfig::String first(iter->first);
2173                 etl::loose_handle<Canvas> second(iter->second);
2174                 printf("  |    %40s : %lx (%d)\n", first.c_str(), ulong(&*second), second->count());
2175         }
2176         printf("  `-----\n\n");
2177 }
2178 #endif  // _DEBUG
2179
2180 Canvas::Handle
2181 CanvasParser::parse_from_file_as(const String &file_,const String &as_,String &errors)
2182 {
2183         ChangeLocale change_locale(LC_NUMERIC, "C");
2184         String file(unix_to_local_path(file_));
2185         String as(unix_to_local_path(as_));
2186
2187         try
2188         {
2189                 if(get_open_canvas_map().count(etl::absolute_path(as)))
2190                         return get_open_canvas_map()[etl::absolute_path(as)];
2191
2192                 filename=as;
2193                 total_warnings_=0;
2194                 xmlpp::DomParser parser(file);
2195                 if(parser)
2196                 {
2197                         Canvas::Handle canvas(parse_canvas(parser.get_document()->get_root_node(),0,false,as));
2198                         if (!canvas) return canvas;
2199                         register_canvas_in_map(canvas, as);
2200
2201                         const ValueNodeList& value_node_list(canvas->value_node_list());
2202
2203                         again:
2204                         ValueNodeList::const_iterator iter;
2205                         for(iter=value_node_list.begin();iter!=value_node_list.end();++iter)
2206                         {
2207                                 ValueNode::Handle value_node(*iter);
2208                                 if(value_node->is_exported() && value_node->get_id().find("Unnamed")==0)
2209                                 {
2210                                         canvas->remove_value_node(value_node);
2211                                         goto again;
2212                                 }
2213                         }
2214
2215                         return canvas;
2216                 }
2217         }
2218         catch(Exception::BadLinkName) { synfig::error("BadLinkName Thrown"); }
2219         catch(Exception::BadType) { synfig::error("BadType Thrown"); }
2220         catch(Exception::FileNotFound) { synfig::error("FileNotFound Thrown"); }
2221         catch(Exception::IDNotFound) { synfig::error("IDNotFound Thrown"); }
2222         catch(Exception::IDAlreadyExists) { synfig::error("IDAlreadyExists Thrown"); }
2223         catch(xmlpp::internal_error x)
2224         {
2225                 if (!strcmp(x.what(), "Couldn't create parsing context"))
2226                         throw runtime_error(String("  * ") + _("Can't open file") + " \"" + file + "\"");
2227                 throw;
2228         }
2229         catch(const std::exception& ex)
2230         {
2231                 synfig::error("Standard Exception: "+String(ex.what()));
2232                 errors = ex.what();
2233                 return Canvas::Handle();
2234         }
2235         catch(const String& str)
2236         {
2237                 cerr<<str<<endl;
2238                 //      synfig::error(str);
2239                 errors = str;
2240                 return Canvas::Handle();
2241         }
2242         return Canvas::Handle();
2243 }
2244
2245 Canvas::Handle
2246 CanvasParser::parse_as(xmlpp::Element* node,String &errors)
2247 {
2248         ChangeLocale change_locale(LC_NUMERIC, "C");
2249         try
2250         {
2251                 total_warnings_=0;
2252                 if(node)
2253                 {
2254                         Canvas::Handle canvas(parse_canvas(node,0,false,""));
2255                         if (!canvas) return canvas;
2256
2257                         const ValueNodeList& value_node_list(canvas->value_node_list());
2258
2259                         again:
2260                         ValueNodeList::const_iterator iter;
2261                         for(iter=value_node_list.begin();iter!=value_node_list.end();++iter)
2262                         {
2263                                 ValueNode::Handle value_node(*iter);
2264                                 if(value_node->is_exported() && value_node->get_id().find("Unnamed")==0)
2265                                 {
2266                                         canvas->remove_value_node(value_node);
2267                                         goto again;
2268                                 }
2269                         }
2270
2271                         return canvas;
2272                 }
2273         }
2274         catch(Exception::BadLinkName) { synfig::error("BadLinkName Thrown"); }
2275         catch(Exception::BadType) { synfig::error("BadType Thrown"); }
2276         catch(Exception::FileNotFound) { synfig::error("FileNotFound Thrown"); }
2277         catch(Exception::IDNotFound) { synfig::error("IDNotFound Thrown"); }
2278         catch(Exception::IDAlreadyExists) { synfig::error("IDAlreadyExists Thrown"); }
2279         catch(xmlpp::internal_error x)
2280         {
2281                 if (!strcmp(x.what(), "Couldn't create parsing context"))
2282                         throw runtime_error(String("  * ") + _("Can't open file") + " \"" + "\"");
2283                 throw;
2284         }
2285         catch(const std::exception& ex)
2286         {
2287                 synfig::error("Standard Exception: "+String(ex.what()));
2288                 errors = ex.what();
2289                 return Canvas::Handle();
2290         }
2291         catch(const String& str)
2292         {
2293                 cerr<<str<<endl;
2294                 errors = str;
2295                 return Canvas::Handle();
2296         }
2297         return Canvas::Handle();
2298 }
2299 //extern
2300 Canvas::Handle
2301 synfig::open_canvas(xmlpp::Element* node,String &errors,String &warnings){
2302         Canvas::Handle canvas;
2303         CanvasParser parser;
2304         parser.set_allow_errors(true);
2305         try
2306         {
2307                 canvas=parser.parse_as(node,errors);
2308         }
2309         catch (...)
2310         {
2311                 synfig::error("open canvas of a node");
2312                 throw;
2313         }
2314
2315         warnings = parser.get_warnings_text();
2316
2317         if(parser.error_count())
2318         {
2319                 errors = parser.get_errors_text();
2320                 return Canvas::Handle();
2321         }
2322         return canvas;
2323 }
2324
2325