synfig-core/trunk/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 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include <cstdlib>
  33 #include <cstdio>
  34 #include <cstring>
  35 #include <ETL/stringf>
  36 #include <libxml++/libxml++.h>
  37 #include <vector>
  38 #include <stdexcept>
  39 #include <iostream>
  40
  41 #include "loadcanvas.h"
  42 #include "valuenode.h"
  43 #include "valuenode_subtract.h"
  44 #include "valuenode_animated.h"
  45 #include "valuenode_composite.h"
  46 #include "valuenode_const.h"
  47 #include "valuenode_linear.h"
  48 #include "valuenode_dynamiclist.h"
  49 #include "valuenode_reference.h"
  50 #include "valuenode_scale.h"
  51 #include "valuenode_timedswap.h"
  52 #include "valuenode_twotone.h"
  53 #include "valuenode_stripes.h"
  54 #include "valuenode_segcalctangent.h"
  55 #include "valuenode_segcalcvertex.h"
  56 #include "valuenode_bline.h"
  57
  58 #include "layer.h"
  59 #include "string.h"
  60
  61 #include "exception.h"
  62
  63 #include "gradient.h"
  64
  65 #include <map>
  66 #include <sigc++/bind.h>
  67
  68 #endif
  69
  70 /* === U S I N G =========================================================== */
  71
  72 using namespace std;
  73 using namespace synfig;
  74 using namespace etl;
  75
  76 /*
  77 class test_class {
  78 static int bleh;
  79 public:
  80         test_class() { assert(!bleh); bleh++; synfig::info("test_class: initi: %d",bleh); }
  81         ~test_class() { assert(bleh); synfig::info("test_class: uninit: %d",bleh); bleh--; }
  82 };
  83 int test_class::bleh(0);
  84
  85 test_class test_class_instance;
  86 */
  87
  88 /* === M A C R O S ========================================================= */
  89
  90 inline bool is_whitespace(char x) { return ((x)=='\n' || (x)=='\t' || (x)==' '); }
  91
  92 /* === P R O C E D U R E S ================================================= */
  93
  94 static std::map<String, Canvas::LooseHandle>* open_canvas_map_(0);
  95
  96 std::map<synfig::String, etl::loose_handle<Canvas> >& synfig::get_open_canvas_map()
  97 {
  98         if(!open_canvas_map_)
  99                 open_canvas_map_=new std::map<String, Canvas::LooseHandle>;
 100         return *open_canvas_map_;
 101 }
 102
 103 static void _remove_from_open_canvas_map(Canvas *x) { get_open_canvas_map().erase(etl::absolute_path(x->get_file_name())); }
 104
 105 static void _canvas_file_name_changed(Canvas *x)
 106 {
 107         std::map<synfig::String, etl::loose_handle<Canvas> >::iterator iter;
 108
 109         for(iter=get_open_canvas_map().begin();iter!=get_open_canvas_map().end();++iter)
 110                 if(iter->second==x)
 111                         break;
 112         assert(iter!=get_open_canvas_map().end());
 113         if(iter==get_open_canvas_map().end())
 114                 return;
 115         get_open_canvas_map().erase(iter->first);
 116         get_open_canvas_map()[etl::absolute_path(x->get_file_name())]=x;
 117
 118 }
 119
 120 Canvas::Handle
 121 synfig::open_canvas(const String &filename)
 122 {
 123         CanvasParser parser;
 124
 125         parser.set_allow_errors(true);
 126
 127         Canvas::Handle canvas=parser.parse_from_file(filename);
 128
 129         if(parser.error_count())
 130                 return Canvas::Handle();
 131
 132         return canvas;
 133 }
 134
 135 Canvas::Handle
 136 synfig::open_canvas_as(const String &filename,const String &as)
 137 {
 138         CanvasParser parser;
 139
 140         parser.set_allow_errors(true);
 141
 142         Canvas::Handle canvas=parser.parse_from_file_as(filename,as);
 143
 144         if(parser.error_count())
 145                 return Canvas::Handle();
 146
 147         return canvas;
 148 }
 149
 150 Canvas::Handle
 151 synfig::string_to_canvas(const String &data)
 152 {
 153         CanvasParser parser;
 154
 155         parser.set_allow_errors(true);
 156
 157         Canvas::Handle canvas=parser.parse_from_string(data);
 158
 159         if(parser.error_count())
 160                 return Canvas::Handle();
 161
 162         return canvas;
 163 }
 164
 165 /* === M E T H O D S ======================================================= */
 166
 167 void
 168 CanvasParser::error_unexpected_element(xmlpp::Node *element,const String &got, const String &expected)
 169 {
 170         error(element,strprintf(_("Unexpected element <%s>, Expected <%s>"),got.c_str(),expected.c_str()));
 171 }
 172
 173 void
 174 CanvasParser::error_unexpected_element(xmlpp::Node *element,const String &got)
 175 {
 176         error(element,strprintf(_("Unexpected element <%s>"),got.c_str()));
 177 }
 178
 179 void
 180 CanvasParser::warning(xmlpp::Node *element, const String &text)
 181 {
 182         string str=strprintf("%s:<%s>:%d: warning: ",filename.c_str(),element->get_name().c_str(),element->get_line())+text;
 183         //synfig::warning(str);
 184         cerr<<str<<endl;
 185         total_warnings_++;
 186         if(total_warnings_>=max_warnings_)
 187                 fatal_error(element, _("Too many warnings"));
 188 }
 189
 190 void
 191 CanvasParser::error(xmlpp::Node *element, const String &text)
 192 {
 193         string str=strprintf("%s:<%s>:%d: error: ",filename.c_str(),element->get_name().c_str(),element->get_line())+text;
 194         total_errors_++;
 195         if(!allow_errors_)
 196                 throw runtime_error(str);
 197         cerr<<str<<endl;
 198         //      synfig::error(str);
 199 }
 200
 201 void
 202 CanvasParser::fatal_error(xmlpp::Node *element, const String &text)
 203 {
 204         string str=strprintf("%s:<%s>:%d:",filename.c_str(),element->get_name().c_str(),element->get_line())+text;
 205         throw runtime_error(str);
 206 }
 207
 208
 209
 210 Keyframe
 211 CanvasParser::parse_keyframe(xmlpp::Element *element,Canvas::Handle canvas)
 212 {
 213         assert(element->get_name()=="keyframe");
 214
 215         if(!element->get_attribute("time"))
 216         {
 217                 error(element,strprintf(_("<%s> is missing \"%s\" attribute"),"real","time"));
 218                 return Keyframe();
 219         }
 220
 221         Keyframe ret(Time(element->get_attribute("time")->get_value(),canvas->rend_desc().get_frame_rate()));
 222
 223
 224         if(element->get_children().empty())
 225                 return ret;
 226
 227         if(element->get_child_text()->get_content().empty())
 228                 return ret;
 229
 230         ret.set_description(element->get_child_text()->get_content());
 231
 232         return ret;
 233 }
 234
 235
 236 Real
 237 CanvasParser::parse_real(xmlpp::Element *element,Canvas::Handle canvas)
 238 {
 239         assert(element->get_name()=="real");
 240
 241         if(!element->get_children().empty())
 242                 warning(element, strprintf(_("<%s> should not contain anything"),"real"));
 243
 244         if(!element->get_attribute("value"))
 245         {
 246                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"real"));
 247                 return false;
 248         }
 249
 250         string val=element->get_attribute("value")->get_value();
 251
 252         return atof(val.c_str());
 253 }
 254
 255 Time
 256 CanvasParser::parse_time(xmlpp::Element *element,Canvas::Handle canvas)
 257 {
 258         assert(element->get_name()=="time");
 259
 260         if(!element->get_children().empty())
 261                 warning(element, strprintf(_("<%s> should not contain anything"),"time"));
 262
 263         if(!element->get_attribute("value"))
 264         {
 265                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"time"));
 266                 return false;
 267         }
 268
 269         string val=element->get_attribute("value")->get_value();
 270
 271         return Time(val,canvas->rend_desc().get_frame_rate());
 272 }
 273
 274 int
 275 CanvasParser::parse_integer(xmlpp::Element *element,Canvas::Handle canvas)
 276 {
 277         assert(element->get_name()=="integer");
 278
 279         if(!element->get_children().empty())
 280                 warning(element, strprintf(_("<%s> should not contain anything"),"integer"));
 281
 282         if(!element->get_attribute("value"))
 283         {
 284                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"integer"));
 285                 return false;
 286         }
 287
 288         string val=element->get_attribute("value")->get_value();
 289
 290         return atoi(val.c_str());
 291 }
 292
 293 Vector
 294 CanvasParser::parse_vector(xmlpp::Element *element,Canvas::Handle canvas)
 295 {
 296         assert(element->get_name()=="vector");
 297
 298         if(element->get_children().empty())
 299         {
 300                 error(element, "Undefined value in <vector>");
 301                 return Vector();
 302         }
 303
 304         Vector vect;
 305
 306         xmlpp::Element::NodeList list = element->get_children();
 307         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 308         {
 309                 xmlpp::Element *child=dynamic_cast<xmlpp::Element*>((xmlpp::Node*)*iter);
 310                 if(!child)
 311                         continue;
 312                 else
 313                 if(child->get_name()=="x")
 314                 {
 315                         if(child->get_children().empty())
 316                         {
 317                                 error(element, "Undefined value in <x>");
 318                                 return Vector();
 319                         }
 320                         vect[0]=atof(child->get_child_text()->get_content().c_str());
 321                 }
 322                 else
 323                 if(child->get_name()=="y")
 324                 {
 325                         if(child->get_children().empty())
 326                         {
 327                                 error(element, "Undefined value in <y>");
 328                                 return Vector();
 329                         }
 330                         vect[1]=atof(child->get_child_text()->get_content().c_str());
 331                 }
 332                 else
 333                         error_unexpected_element(child,child->get_name());
 334         }
 335         return vect;
 336 }
 337
 338 Color
 339 CanvasParser::parse_color(xmlpp::Element *element,Canvas::Handle canvas)
 340 {
 341         assert(element->get_name()=="color");
 342
 343         if(element->get_children().empty())
 344         {
 345                 error(element, "Undefined value in <color>");
 346                 return Color();
 347         }
 348
 349         Color color;
 350
 351         xmlpp::Element::NodeList list = element->get_children();
 352         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 353         {
 354                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 355                 if(!child)
 356                         continue;
 357                 else
 358                 if(child->get_name()=="r")
 359                 {
 360                         if(child->get_children().empty())
 361                         {
 362                                 error(element, "Undefined value in <r>");
 363                                 return Color();
 364                         }
 365                         color.set_r(atof(child->get_child_text()->get_content().c_str()));
 366                 }
 367                 else
 368                 if(child->get_name()=="g")
 369                 {
 370                         if(child->get_children().empty())
 371                         {
 372                                 error(element, "Undefined value in <g>");
 373                                 return Color();
 374                         }
 375                         color.set_g(atof(child->get_child_text()->get_content().c_str()));
 376                 }
 377                 else
 378                 if(child->get_name()=="b")
 379                 {
 380                         if(child->get_children().empty())
 381                         {
 382                                 error(element, "Undefined value in <b>");
 383                                 return Color();
 384                         }
 385                         color.set_b(atof(child->get_child_text()->get_content().c_str()));
 386                 }
 387                 else
 388                 if(child->get_name()=="a")
 389                 {
 390                         if(child->get_children().empty())
 391                         {
 392                                 error(element, "Undefined value in <a>");
 393                                 return Color();
 394                         }
 395                         color.set_a(atof(child->get_child_text()->get_content().c_str()));
 396                 }
 397                 else
 398                         error_unexpected_element(child,child->get_name());
 399         }
 400
 401         return color;
 402 }
 403
 404 synfig::String
 405 CanvasParser::parse_string(xmlpp::Element *element,Canvas::Handle canvas)
 406 {
 407         assert(element->get_name()=="string");
 408
 409         if(element->get_children().empty())
 410         {
 411                 warning(element, "Undefined value in <string>");
 412                 return synfig::String();
 413         }
 414
 415         if(element->get_child_text()->get_content().empty())
 416         {
 417                 warning(element, "Content element of <string> appears to be empty");
 418                 return synfig::String();
 419         }
 420
 421         return element->get_child_text()->get_content();
 422 }
 423
 424 bool
 425 CanvasParser::parse_bool(xmlpp::Element *element,Canvas::Handle canvas)
 426 {
 427         assert(element->get_name()=="bool");
 428
 429         if(!element->get_children().empty())
 430                 warning(element, strprintf(_("<%s> should not contain anything"),"bool"));
 431
 432         if(!element->get_attribute("value"))
 433         {
 434                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"bool"));
 435                 return false;
 436         }
 437
 438         string val=element->get_attribute("value")->get_value();
 439
 440         if(val=="true" || val=="1")
 441                 return true;
 442         if(val=="false" || val=="0")
 443                 return false;
 444
 445         error(element,strprintf(_("Bad value \"%s\" in <%s>"),val.c_str(),"bool"));
 446
 447         return false;
 448 }
 449
 450 Gradient
 451 CanvasParser::parse_gradient(xmlpp::Element *node,Canvas::Handle canvas)
 452 {
 453         assert(node->get_name()=="gradient");
 454         Gradient ret;
 455
 456         xmlpp::Element::NodeList list = node->get_children();
 457         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 458         {
 459                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 460                 if(!child)
 461                         continue;
 462                 else
 463                 {
 464                         Gradient::CPoint cpoint;
 465                         cpoint.color=parse_color(child,canvas);
 466
 467                         if(!child->get_attribute("pos"))
 468                         {
 469                                 error(child,strprintf(_("<%s> is missing \"pos\" attribute"),"gradient"));
 470                                 return Gradient();
 471                         }
 472
 473                         cpoint.pos=atof(child->get_attribute("pos")->get_value().c_str());
 474
 475                         ret.push_back(cpoint);
 476                 }
 477         }
 478         ret.sort();
 479         return ret;
 480 }
 481
 482 ValueBase
 483 CanvasParser::parse_list(xmlpp::Element *element,Canvas::Handle canvas)
 484 {
 485         vector<ValueBase> value_list;
 486
 487         xmlpp::Element::NodeList list = element->get_children();
 488         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 489         {
 490                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 491                 if(!child)
 492                         continue;
 493                 else
 494                 {
 495                         value_list.push_back(parse_value(child,canvas));
 496                         if(!value_list.back().is_valid())
 497                         {
 498                                 value_list.pop_back();
 499                                 error(child,"Bad ValueBase");
 500                                 continue;
 501                         }
 502                 }
 503         }
 504         return value_list;
 505 }
 506
 507 Segment
 508 CanvasParser::parse_segment(xmlpp::Element *element,Canvas::Handle canvas)
 509 {
 510         assert(element->get_name()=="segment");
 511
 512         if(element->get_children().empty())
 513         {
 514                 error(element, "Undefined value in <segment>");
 515                 return Segment();
 516         }
 517
 518         Segment seg;
 519
 520         xmlpp::Element::NodeList list = element->get_children();
 521         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 522         {
 523                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 524                 if(!child)
 525                         continue;
 526                 else
 527                 if(child->get_name()=="p1")
 528                 {
 529                         xmlpp::Element::NodeList list = child->get_children();
 530                         xmlpp::Element::NodeList::iterator iter;
 531
 532                         // Search for the first non-text XML element
 533                         for(iter = list.begin(); iter != list.end(); ++iter)
 534                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 535
 536                         if(iter==list.end())
 537                         {
 538                                 error(element, "Undefined value in <p1>");
 539                                 continue;
 540                         }
 541
 542                         if((*iter)->get_name()!="vector")
 543                         {
 544                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 545                                 continue;
 546                         }
 547
 548                         seg.p1=parse_vector(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 549                 }
 550                 else
 551                 if(child->get_name()=="t1")
 552                 {
 553                         xmlpp::Element::NodeList list = child->get_children();
 554                         xmlpp::Element::NodeList::iterator iter;
 555
 556                         // Search for the first non-text XML element
 557                         for(iter = list.begin(); iter != list.end(); ++iter)
 558                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 559
 560                         if(iter==list.end())
 561                         {
 562                                 error(element, "Undefined value in <t1>");
 563                                 continue;
 564                         }
 565
 566                         if((*iter)->get_name()!="vector")
 567                         {
 568                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 569                                 continue;
 570                         }
 571
 572                         seg.t1=parse_vector(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 573                 }
 574                 else
 575                 if(child->get_name()=="p2")
 576                 {
 577                         xmlpp::Element::NodeList list = child->get_children();
 578                         xmlpp::Element::NodeList::iterator iter;
 579
 580                         // Search for the first non-text XML element
 581                         for(iter = list.begin(); iter != list.end(); ++iter)
 582                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 583
 584                         if(iter==list.end())
 585                         {
 586                                 error(element, "Undefined value in <p2>");
 587                                 continue;
 588                         }
 589
 590                         if((*iter)->get_name()!="vector")
 591                         {
 592                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 593                                 continue;
 594                         }
 595
 596                         seg.p2=parse_vector(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 597                 }
 598                 else
 599                 if(child->get_name()=="t2")
 600                 {
 601                         xmlpp::Element::NodeList list = child->get_children();
 602                         xmlpp::Element::NodeList::iterator iter;
 603
 604                         // Search for the first non-text XML element
 605                         for(iter = list.begin(); iter != list.end(); ++iter)
 606                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 607
 608                         if(iter==list.end())
 609                         {
 610                                 error(element, "Undefined value in <t2>");
 611                                 continue;
 612                         }
 613
 614                         if((*iter)->get_name()!="vector")
 615                         {
 616                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 617                                 continue;
 618                         }
 619
 620                         seg.t2=parse_vector(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 621                 }
 622                 else
 623                         error_unexpected_element(child,child->get_name());
 624         }
 625         return seg;
 626 }
 627
 628 BLinePoint
 629 CanvasParser::parse_bline_point(xmlpp::Element *element,Canvas::Handle canvas)
 630 {
 631         assert(element->get_name()=="bline_point");
 632         if(element->get_children().empty())
 633         {
 634                 error(element, "Undefined value in <bline_point>");
 635                 return BLinePoint();
 636         }
 637
 638         BLinePoint ret;
 639         ret.set_split_tangent_flag(false);
 640
 641         xmlpp::Element::NodeList list = element->get_children();
 642         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 643         {
 644                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 645                 if(!child)
 646                         continue;
 647                 else
 648                 // Vertex
 649                 if(child->get_name()[0]=='v' || child->get_name()=="p1")
 650                 {
 651                         xmlpp::Element::NodeList list = child->get_children();
 652                         xmlpp::Element::NodeList::iterator iter;
 653
 654                         // Search for the first non-text XML element
 655                         for(iter = list.begin(); iter != list.end(); ++iter)
 656                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 657
 658                         if(iter==list.end())
 659                         {
 660                                 error(element, "Undefined value in <vertex>");
 661                                 continue;
 662                         }
 663
 664                         if((*iter)->get_name()!="vector")
 665                         {
 666                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 667                                 continue;
 668                         }
 669
 670                         ret.set_vertex(parse_vector(dynamic_cast<xmlpp::Element*>(*iter),canvas));
 671                 }
 672                 else
 673                 // Tangent 1
 674                 if(child->get_name()=="t1" || child->get_name()=="tangent")
 675                 {
 676                         xmlpp::Element::NodeList list = child->get_children();
 677                         xmlpp::Element::NodeList::iterator iter;
 678
 679                         // Search for the first non-text XML element
 680                         for(iter = list.begin(); iter != list.end(); ++iter)
 681                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 682
 683                         if(iter==list.end())
 684                         {
 685                                 error(element, "Undefined value in <t1>");
 686                                 continue;
 687                         }
 688
 689                         if((*iter)->get_name()!="vector")
 690                         {
 691                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 692                                 continue;
 693                         }
 694
 695                         ret.set_tangent1(parse_vector(dynamic_cast<xmlpp::Element*>(*iter),canvas));
 696                 }
 697                 else
 698                 // Tangent 2
 699                 if(child->get_name()=="t2")
 700                 {
 701                         xmlpp::Element::NodeList list = child->get_children();
 702                         xmlpp::Element::NodeList::iterator iter;
 703
 704                         // Search for the first non-text XML element
 705                         for(iter = list.begin(); iter != list.end(); ++iter)
 706                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 707
 708                         if(iter==list.end())
 709                         {
 710                                 error(element, "Undefined value in <t2>");
 711                                 continue;
 712                         }
 713
 714                         if((*iter)->get_name()!="vector")
 715                         {
 716                                 error_unexpected_element((*iter),(*iter)->get_name(),"vector");
 717                                 continue;
 718                         }
 719
 720                         ret.set_tangent2(parse_vector(dynamic_cast<xmlpp::Element*>(*iter),canvas));
 721                         ret.set_split_tangent_flag(true);
 722                 }
 723                 else
 724                 // width
 725                 if(child->get_name()=="width")
 726                 {
 727                         xmlpp::Element::NodeList list = child->get_children();
 728                         xmlpp::Element::NodeList::iterator iter;
 729
 730                         // Search for the first non-text XML element
 731                         for(iter = list.begin(); iter != list.end(); ++iter)
 732                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 733
 734                         if(iter==list.end())
 735                         {
 736                                 error(element, "Undefined value in <width>");
 737                                 continue;
 738                         }
 739
 740                         if((*iter)->get_name()!="real")
 741                         {
 742                                 error_unexpected_element((*iter),(*iter)->get_name(),"real");
 743                                 continue;
 744                         }
 745
 746                         ret.set_width(parse_real(dynamic_cast<xmlpp::Element*>(*iter),canvas));
 747                 }
 748                 else
 749                 // origin
 750                 if(child->get_name()=="origin")
 751                 {
 752                         xmlpp::Element::NodeList list = child->get_children();
 753                         xmlpp::Element::NodeList::iterator iter;
 754
 755                         // Search for the first non-text XML element
 756                         for(iter = list.begin(); iter != list.end(); ++iter)
 757                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 758
 759                         if(iter==list.end())
 760                         {
 761                                 error(element, "Undefined value in <origin>");
 762                                 continue;
 763                         }
 764
 765                         if((*iter)->get_name()!="real")
 766                         {
 767                                 error_unexpected_element((*iter),(*iter)->get_name(),"real");
 768                                 continue;
 769                         }
 770
 771                         ret.set_origin(parse_real(dynamic_cast<xmlpp::Element*>(*iter),canvas));
 772                 }
 773                 else
 774                         error_unexpected_element(child,child->get_name());
 775         }
 776         return ret;
 777 }
 778
 779 Angle
 780 CanvasParser::parse_angle(xmlpp::Element *element,Canvas::Handle canvas)
 781 {
 782         assert(element->get_name()=="angle");
 783
 784         if(!element->get_children().empty())
 785                 warning(element, strprintf(_("<%s> should not contain anything"),"angle"));
 786
 787         if(!element->get_attribute("value"))
 788         {
 789                 error(element,strprintf(_("<%s> is missing \"value\" attribute"),"angle"));
 790                 return Angle();
 791         }
 792
 793         string val=element->get_attribute("value")->get_value();
 794
 795         return Angle::deg(atof(val.c_str()));
 796 }
 797
 798 ValueBase
 799 CanvasParser::parse_value(xmlpp::Element *element,Canvas::Handle canvas)
 800 {
 801         if(element->get_name()=="real")
 802                 return parse_real(element,canvas);
 803         else
 804         if(element->get_name()=="time")
 805                 return parse_time(element,canvas);
 806         else
 807         if(element->get_name()=="integer")
 808                 return parse_integer(element,canvas);
 809         else
 810         if(element->get_name()=="string")
 811                 return parse_string(element,canvas);
 812         else
 813         if(element->get_name()=="vector")
 814         {
 815                 return parse_vector(element,canvas);
 816         }
 817         else
 818         if(element->get_name()=="color")
 819                 return parse_color(element,canvas);
 820         else
 821         if(element->get_name()=="segment")
 822                 return parse_segment(element,canvas);
 823         else
 824         if(element->get_name()=="list")
 825                 return parse_list(element,canvas);
 826         else
 827         if(element->get_name()=="gradient")
 828                 return parse_gradient(element,canvas);
 829         else
 830         if(element->get_name()=="bool")
 831                 return parse_bool(element,canvas);
 832         else
 833         //if(element->get_name()=="canvas")
 834         //      return parse_canvas(element,canvas,true);       // inline canvas
 835         //else
 836         if(element->get_name()=="angle" || element->get_name()=="degrees" || element->get_name()=="radians" || element->get_name()=="rotations")
 837                 return parse_angle(element,canvas);
 838         else
 839         if(element->get_name()=="bline_point")
 840                 return parse_bline_point(element,canvas);
 841         else
 842         if(element->get_name()=="canvas")
 843                 return ValueBase(parse_canvas(element,canvas,true));
 844         else
 845         {
 846                 DEBUGPOINT();
 847                 error_unexpected_element(element,element->get_name());
 848         }
 849
 850         return ValueBase();
 851 }
 852
 853
 854
 855
 856 ValueNode_Animated::Handle
 857 CanvasParser::parse_animated(xmlpp::Element *element,Canvas::Handle canvas)
 858 {
 859         assert(element->get_name()=="hermite" || element->get_name()=="animated");
 860
 861         if(!element->get_attribute("type"))
 862         {
 863                 error(element,"Missing attribute \"type\" in <animated>");
 864                 return ValueNode_Animated::Handle();
 865         }
 866
 867         ValueBase::Type type=ValueBase::ident_type(element->get_attribute("type")->get_value());
 868
 869         if(!type)
 870         {
 871                 error(element,"Bad type in <animated>");
 872                 return ValueNode_Animated::Handle();
 873         }
 874
 875         ValueNode_Animated::Handle value_node=ValueNode_Animated::create(type);
 876
 877         if(!value_node)
 878         {
 879                 error(element,strprintf(_("Unable to create <animated> with type \"%s\""),ValueBase::type_name(type).c_str()));
 880                 return ValueNode_Animated::Handle();
 881         }
 882
 883         value_node->set_root_canvas(canvas->get_root());
 884
 885         xmlpp::Element::NodeList list = element->get_children();
 886         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
 887         {
 888                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
 889                 if(!child)
 890                         continue;
 891                 else
 892                 if(child->get_name()=="waypoint")
 893                 {
 894                         if(!child->get_attribute("time"))
 895                         {
 896                                 error(child,_("<waypoint> is missing attribute \"time\""));
 897                                 continue;
 898                         }
 899
 900                         Time time(child->get_attribute("time")->get_value(),canvas->rend_desc().get_frame_rate());
 901
 902
 903                         ValueNode::Handle waypoint_value_node;
 904                         xmlpp::Element::NodeList list = child->get_children();
 905
 906                         if(child->get_attribute("use"))
 907                         {
 908                                 if(!list.empty())
 909                                         warning(child,_("Found \"use\" attribute for <waypoint>, but it wasn't empty. Ignoring contents..."));
 910
 911                                 // the waypoint might look like this, in which case we won't find "mycanvas" in the list of valuenodes, 'cos it's a canvas
 912                                 //
 913                                 //      <animated type="canvas">
 914                                 //        <waypoint time="0s" use="mycanvas"/>
 915                                 //      </animated>
 916                                 if (type==ValueBase::TYPE_CANVAS)
 917                                         waypoint_value_node=ValueNode_Const::create(canvas->surefind_canvas(child->get_attribute("use")->get_value()));
 918                                 else
 919                                         waypoint_value_node=canvas->surefind_value_node(child->get_attribute("use")->get_value());
 920                         }
 921                         else
 922                         {
 923                                 if(child->get_children().empty())
 924                                 {
 925                                         error(child, strprintf(_("<%s> is missing its data"),"waypoint"));
 926                                         continue;
 927                                 }
 928
 929                                 xmlpp::Element::NodeList::iterator iter;
 930
 931                                 // Search for the first non-text XML element
 932                                 for(iter = list.begin(); iter != list.end(); ++iter)
 933                                         if(dynamic_cast<xmlpp::Element*>(*iter)) break;
 934
 935                                 if(iter==list.end())
 936                                 {
 937                                         error(child, strprintf(_("<%s> is missing its data"),"waypoint"));
 938                                         continue;
 939                                 }
 940
 941                                 waypoint_value_node=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 942
 943                                 /*
 944                                 ValueBase data=parse_value(dynamic_cast<xmlpp::Element*>(*iter),canvas);
 945
 946                                 if(!data.is_valid())
 947                                 {
 948                                         error(child,_("Bad data for <waypoint>"));
 949                                         continue;
 950                                 }
 951                                 */
 952                                 if(!waypoint_value_node)
 953                                 {
 954                                         error(child,_("Bad data for <waypoint>"));
 955                                         continue;
 956                                 }
 957
 958                                 /*! HACK -- This is a temporary fix to help repair some
 959                                 **      weirdness that is currently going on (10-21-2004).
 960                                 **      This short circuits the linking of waypoints,
 961                                 **      a feature which is so obscure that we can get
 962                                 **      away with something like this pretty easily.
 963                                 */
 964                                 waypoint_value_node=waypoint_value_node->clone();
 965
 966                                 // Warn if there is trash after the param value
 967                                 for(iter++; iter != list.end(); ++iter)
 968                                         if(dynamic_cast<xmlpp::Element*>(*iter))
 969                                                 warning((*iter),strprintf(_("Unexpected element <%s> after <waypoint> data, ignoring..."),(*iter)->get_name().c_str()));
 970                         }
 971
 972
 973                         try {
 974                                 ValueNode_Animated::WaypointList::iterator waypoint=value_node->new_waypoint(time,waypoint_value_node);
 975
 976                         if(child->get_attribute("tension"))
 977                         {
 978                                 synfig::String str(child->get_attribute("tension")->get_value());
 979                                 waypoint->set_tension(atof(str.c_str()));
 980                         }
 981                         if(child->get_attribute("temporal-tension"))
 982                         {
 983                                 synfig::String str(child->get_attribute("temporal-tension")->get_value());
 984                                 waypoint->set_time_tension(atof(str.c_str()));
 985                         }
 986                         if(child->get_attribute("continuity"))
 987                         {
 988                                 synfig::String str(child->get_attribute("continuity")->get_value());
 989                                 waypoint->set_continuity(atof(str.c_str()));
 990                         }
 991                         if(child->get_attribute("bias"))
 992                         {
 993                                 synfig::String str(child->get_attribute("bias")->get_value());
 994                                 waypoint->set_bias(atof(str.c_str()));
 995                         }
 996
 997                         if(child->get_attribute("before"))
 998                         {
 999                                 string val=child->get_attribute("before")->get_value();
1000                                 if(val=="halt")
1001                                         waypoint->set_before(INTERPOLATION_HALT);
1002                                 else if(val=="constant")
1003                                         waypoint->set_before(INTERPOLATION_CONSTANT);
1004                                 else if(val=="linear")
1005                                         waypoint->set_before(INTERPOLATION_LINEAR);
1006                                 else if(val=="manual")
1007                                         waypoint->set_before(INTERPOLATION_MANUAL);
1008                                 else if(val=="auto")
1009                                         waypoint->set_before(INTERPOLATION_TCB);
1010                                 else
1011                                         error(child,strprintf(_("\"%s\" not a valid value for attribute \"%s\" in <%s>"),val.c_str(),"before","waypoint"));
1012                         }
1013
1014                         if(child->get_attribute("after"))
1015                         {
1016                                 string val=child->get_attribute("after")->get_value();
1017                                 if(val=="halt")
1018                                         waypoint->set_after(INTERPOLATION_HALT);
1019                                 else if(val=="constant")
1020                                         waypoint->set_after(INTERPOLATION_CONSTANT);
1021                                 else if(val=="linear")
1022                                         waypoint->set_after(INTERPOLATION_LINEAR);
1023                                 else if(val=="manual")
1024                                         waypoint->set_after(INTERPOLATION_MANUAL);
1025                                 else if(val=="auto")
1026                                         waypoint->set_after(INTERPOLATION_TCB);
1027                                 else
1028                                         error(child,strprintf(_("\"%s\" not a valid value for attribute \"%s\" in <%s>"),val.c_str(),"before","waypoint"));
1029                         }
1030                         }
1031                         catch(Exception::BadTime x)
1032                         {
1033                                 warning(child,x.what());
1034                         }
1035                         continue;
1036
1037                 }
1038                 else
1039                         error_unexpected_element(child,child->get_name());
1040         }
1041         value_node->changed();
1042         return value_node;
1043 }
1044
1045 // This function is a phase-out hack for the timed swap value node
1046 etl::handle<ValueNode_Animated>
1047 CanvasParser::parse_timedswap(xmlpp::Element *node,Canvas::Handle canvas)
1048 {
1049         ValueNode_TimedSwap::Handle timed_swap(parse_linkable_value_node(node,canvas));
1050
1051         assert(timed_swap);
1052
1053         ValueNode_Animated::Handle animated(ValueNode_Animated::create(timed_swap->get_type()));
1054
1055         animated->set_root_canvas(canvas->get_root());
1056
1057         assert(animated);
1058
1059         Time swap_time, swap_length;
1060         (*timed_swap->get_swap_time())(0).put(&swap_time);
1061         (*timed_swap->get_swap_length())(0).put(&swap_length);
1062
1063         animated->new_waypoint(swap_time-swap_length,timed_swap->get_before());
1064         animated->new_waypoint(swap_time,timed_swap->get_after());
1065
1066         return animated;
1067 }
1068
1069
1070 handle<ValueNode_Subtract>
1071 CanvasParser::parse_subtract(xmlpp::Element *element,Canvas::Handle canvas)
1072 {
1073         assert(element->get_name()=="subtract");
1074
1075         handle<ValueNode_Subtract> value_node;
1076         handle<ValueNode> lhs,rhs,scalar;
1077
1078         if(element->get_attribute("type"))
1079         {
1080                 ValueBase::Type type=ValueBase::ident_type(element->get_attribute("type")->get_value());
1081
1082                 if(!type)
1083                 {
1084                         error(element,"Bad type in <subtract>");
1085                         return ValueNode_Subtract::Handle();
1086                 }
1087                 value_node=ValueNode_Subtract::create(type);
1088         }
1089         else
1090                 value_node=ValueNode_Subtract::create();
1091
1092         if(!value_node)
1093         {
1094                 error(element,strprintf(_("Unable to create <subtract>")));
1095                 return handle<ValueNode_Subtract>();
1096         }
1097
1098         //if(element->get_attribute("scalar"))
1099         //{
1100         //      value_node->set_scalar(atof(element->get_attribute("scalar")->get_value().c_str()));
1101         //}
1102
1103         try
1104         {
1105                 if(element->get_attribute("scalar"))
1106                 {
1107                         // This is for compatibility with older versions of the file format
1108                         String value(element->get_attribute("scalar")->get_value());
1109                         if((value[0]<='9' && value[0]>='0')      || value[0]=='-')
1110                         {
1111                                 warning(element, _("Use of a real value where the ID should be is deprecated"));
1112                                 value_node->set_scalar(atof(value.c_str()));
1113                         }
1114                         else
1115                                 value_node->set_scalar(canvas->surefind_value_node(value));
1116                         scalar=value_node->get_scalar();
1117                 }
1118
1119                 if(element->get_attribute("lhs"))
1120                 {
1121                         lhs=canvas->surefind_value_node(element->get_attribute("lhs")->get_value());
1122                         value_node->set_lhs(lhs);
1123                 }
1124
1125                 if(element->get_attribute("rhs"))
1126                 {
1127                         rhs=canvas->surefind_value_node(element->get_attribute("rhs")->get_value());
1128                         value_node->set_rhs(rhs);
1129                 }
1130         }
1131         catch (Exception::IDNotFound)
1132         {
1133                 error(element,"attribute in <subtract> references unknown ID");
1134         }
1135         catch (Exception::FileNotFound)
1136         {
1137                 error(element,"Unable to open external file referenced in ID");
1138         }
1139
1140         xmlpp::Element::NodeList list = element->get_children();
1141         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1142         {
1143                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1144                 if(!child)
1145                         continue;
1146                 else
1147                 if(child->get_name()=="lhs")
1148                 {
1149                         if(lhs)
1150                         {
1151                                 error(child,"LHS component of <subtract> already defined!");
1152                                 continue;
1153                         }
1154
1155                         xmlpp::Element::NodeList list = child->get_children();
1156                         xmlpp::Element::NodeList::iterator iter;
1157
1158                         // Search for the first non-text XML element
1159                         for(iter = list.begin(); iter != list.end(); ++iter)
1160                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1161
1162                         if(iter==list.end())
1163                         {
1164                                 error(child,_("<lhs> is missing its contents"));
1165                                 continue;
1166                         }
1167
1168                         lhs=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1169
1170                         if(lhs)
1171                                 value_node->set_lhs(lhs);
1172                         else
1173                         {
1174                                 error((*iter),"Parse of LHS ValueNode failed");
1175                         }
1176
1177                         // \todo do a search for more elements and warn if they are found
1178                 }
1179                 else
1180                 if(child->get_name()=="rhs")
1181                 {
1182                         if(rhs)
1183                         {
1184                                 error(child,"RHS component of <subtract> already defined!");
1185                                 continue;
1186                         }
1187
1188                         xmlpp::Element::NodeList list = child->get_children();
1189                         xmlpp::Element::NodeList::iterator iter;
1190
1191                         // Search for the first non-text XML element
1192                         for(iter = list.begin(); iter != list.end(); ++iter)
1193                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1194
1195                         if(iter==list.end())
1196                         {
1197                                 error(child,_("<rhs> is missing its contents"));
1198                                 continue;
1199                         }
1200
1201                         rhs=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1202
1203                         if(rhs)
1204                                 value_node->set_rhs(rhs);
1205                         else
1206                         {
1207                                 error((*iter),"Parse of RHS ValueNode failed");
1208                         }
1209
1210                         // \todo do a search for more elements and warn if they are found
1211                 }
1212                 else
1213                 if(child->get_name()=="scalar")
1214                 {
1215                         if(scalar)
1216                         {
1217                                 error(child,"scalar component of <subtract> already defined!");
1218                                 continue;
1219                         }
1220
1221                         xmlpp::Element::NodeList list = child->get_children();
1222                         xmlpp::Element::NodeList::iterator iter;
1223
1224                         // Search for the first non-text XML element
1225                         for(iter = list.begin(); iter != list.end(); ++iter)
1226                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1227
1228                         if(iter==list.end())
1229                         {
1230                                 error(child,_("<scalar> is missing its contents"));
1231                                 continue;
1232                         }
1233
1234                         scalar=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1235
1236                         if(scalar)
1237                                 value_node->set_scalar(scalar);
1238                         else
1239                         {
1240                                 error((*iter),"Parse of scalar ValueNode failed");
1241                         }
1242
1243                         // \todo do a search for more elements and warn if they are found
1244                 }
1245                 else
1246                         error_unexpected_element(child,child->get_name());
1247         }
1248
1249         if(!value_node->get_rhs() || !value_node->get_lhs() || !value_node->get_scalar())
1250                 error(element,"<subtract> is missing LHS, RHS, or SCALAR");
1251
1252         if(value_node->get_rhs() == value_node->get_lhs())
1253                 warning(element,"LHS is equal to RHS in <subtract>, so this value_node will always be zero!");
1254
1255         return value_node;
1256 }
1257
1258 etl::handle<LinkableValueNode>
1259 CanvasParser::parse_linkable_value_node(xmlpp::Element *element,Canvas::Handle canvas)
1260 {
1261         handle<LinkableValueNode> value_node;
1262         ValueBase::Type type;
1263
1264         // Determine the type
1265         if(element->get_attribute("type"))
1266         {
1267                 type=ValueBase::ident_type(element->get_attribute("type")->get_value());
1268
1269                 if(!type)
1270                 {
1271                         error(element,"Bad type in ValueNode");
1272                         return 0;
1273                 }
1274         }
1275         else
1276         {
1277                 error(element,"Missing type in ValueNode");
1278                 return 0;
1279         }
1280
1281         value_node=LinkableValueNode::create(element->get_name(),type);
1282
1283         if(!value_node)
1284         {
1285                 error(element,"Unknown ValueNode type "+element->get_name());
1286                 return 0;
1287         }
1288
1289         if(value_node->get_type()!=type)
1290         {
1291                 error(element,"ValueNode did not accept type");
1292                 return 0;
1293         }
1294
1295         value_node->set_root_canvas(canvas->get_root());
1296
1297         int i;
1298         for(i=0;i<value_node->link_count();i++)
1299         {
1300                 if(element->get_attribute(value_node->link_name(i)))
1301                 try {
1302                         String id(element->get_attribute(value_node->link_name(i))->get_value());
1303
1304                         if(!value_node->set_link(i,
1305                                         canvas->surefind_value_node(
1306                                                 id
1307                                         )
1308                                 )
1309                         ) error(element,strprintf(_("Unable to set link \"%s\" to ValueNode \"%s\" (link #%d in \"%s\")"),value_node->link_name(i).c_str(),id.c_str(),i,value_node->get_name().c_str()));
1310                 }
1311                 catch(Exception::IDNotFound)
1312                 {
1313                         error(element,"Unable to resolve "+element->get_attribute(value_node->link_name(i))->get_value());
1314                 }
1315                 catch(Exception::FileNotFound)
1316                 {
1317                         error(element,"Unable to open file referenced in "+element->get_attribute(value_node->link_name(i))->get_value());
1318                 }
1319                 catch(...)
1320                 {
1321                         error(element,strprintf(_("Unknown Exception thrown when referencing ValueNode \"%s\""),
1322                                 element->get_attribute(value_node->link_name(i))->get_value().c_str()));
1323                         throw;
1324                 }
1325         }
1326
1327
1328
1329         xmlpp::Element::NodeList list = element->get_children();
1330         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1331         {
1332                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1333                 try
1334                 {
1335                         if(!child)
1336                                 continue;
1337                         int index=value_node->get_link_index_from_name(child->get_name());
1338
1339                         xmlpp::Element::NodeList list = child->get_children();
1340                         xmlpp::Element::NodeList::iterator iter;
1341
1342                         // Search for the first non-text XML element
1343                         for(iter = list.begin(); iter != list.end(); ++iter)
1344                                 if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1345
1346                         if(iter==list.end())
1347                         {
1348                                 error(child,_("element is missing its contents"));
1349                                 continue;
1350                         }
1351
1352                         ValueNode::Handle link=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1353
1354                         if(!link)
1355                         {
1356                                 error((*iter),"Parse of ValueNode failed");
1357                         }
1358                         else
1359                         if(!value_node->set_link(index,link))
1360                         {
1361                                 //error(dynamic_cast<xmlpp::Element*>(*iter),strprintf("Unable to connect value node ('%s' of type '%s') to link %d",link->get_name().c_str(),ValueBase::type_name(link->get_type()).c_str(),index));
1362                                 error(element,strprintf("Unable to connect value node ('%s' of type '%s') to link %d",link->get_name().c_str(),ValueBase::type_name(link->get_type()).c_str(),index));
1363                         }
1364
1365                         // \todo do a search for more elements and warn if they are found
1366
1367                 }
1368                 catch(Exception::BadLinkName)
1369                 {
1370                         error_unexpected_element(child,child->get_name());
1371                 }
1372                 catch(...)
1373                 {
1374                         error(child,strprintf(_("Unknown Exception thrown when working on element \"%s\""),child->get_name().c_str()));
1375                         throw;
1376                 }
1377         }
1378
1379         return value_node;
1380 }
1381
1382 handle<ValueNode_Composite>
1383 CanvasParser::parse_composite(xmlpp::Element *element,Canvas::Handle canvas)
1384 {
1385         assert(element->get_name()=="composite");
1386
1387         if(!element->get_attribute("type"))
1388         {
1389                 error(element,"Missing attribute \"type\" in <composite>");
1390                 return handle<ValueNode_Composite>();
1391         }
1392
1393         ValueBase::Type type=ValueBase::ident_type(element->get_attribute("type")->get_value());
1394
1395         if(!type)
1396         {
1397                 error(element,"Bad type in <composite>");
1398                 return handle<ValueNode_Composite>();
1399         }
1400
1401         handle<ValueNode_Composite> value_node=ValueNode_Composite::create(type);
1402         handle<ValueNode> c[6];
1403
1404         if(!value_node)
1405         {
1406                 error(element,strprintf(_("Unable to create <composite>")));
1407                 return handle<ValueNode_Composite>();
1408         }
1409
1410         int i;
1411
1412         for(i=0;i<value_node->link_count();i++)
1413         {
1414                 string name=strprintf("c%d",i+1);
1415                 if(c[i])
1416                 {
1417                         error(element,name+" was already defined in <composite>");
1418                         continue;
1419                 }
1420                 if(element->get_attribute(name))
1421                 {
1422                         c[i]=canvas->surefind_value_node(element->get_attribute(name)->get_value());
1423                         if(c[i])
1424                         {
1425                                 if(!value_node->set_link(i,c[i]))
1426                                 {
1427                                         error(element,'"'+name+"\" attribute in <composite> has bad type");
1428                                 }
1429                         }
1430                         else
1431                                 error(element,'"'+name+"\" attribute in <composite> references unknown ID");
1432                 }
1433         }
1434
1435         xmlpp::Element::NodeList list = element->get_children();
1436         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1437         {
1438                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1439                 if(!child)
1440                         continue;
1441                 else
1442                 for(i=0;i<value_node->link_count();i++)
1443                 {
1444                         string name=strprintf("c%d",i+1);
1445                         if(child->get_name()==name)
1446                         {
1447                                 if(c[i])
1448                                 {
1449                                         error(child,name+" was already defined in <composite>");
1450                                         break;
1451                                 }
1452
1453                                 xmlpp::Element::NodeList list = child->get_children();
1454                                 xmlpp::Element::NodeList::iterator iter;
1455
1456                                 // Search for the first non-text XML element
1457                                 for(iter = list.begin(); iter != list.end(); ++iter)
1458                                         if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1459
1460                                 if(iter==list.end())
1461                                 {
1462                                         error(child,strprintf(_("<%s> is missing its contents"),name.c_str()));
1463                                         break;
1464                                 }
1465
1466                                 c[i]=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1467
1468                                 if(!c[i])
1469                                 {
1470                                         error((*iter),"Parse of "+name+" ValueNode failed");
1471                                         break;
1472                                 }
1473
1474                                 if(!value_node->set_link(i,c[i]))
1475                                 {
1476                                         error(child,strprintf(_("<%s> has a bad value"),name.c_str()));
1477                                         break;
1478                                 }
1479
1480                                 // \todo do a search for more elements and warn if they are found
1481                                 break;
1482                         }
1483                 }
1484                 // somewhat of a hack, but it works
1485                 if(i==value_node->link_count()) error_unexpected_element(child,child->get_name());
1486         }
1487
1488         switch(value_node->link_count())
1489         {
1490         case 1:
1491                 if(!value_node->get_link(0))
1492                 {
1493                         error(element,"<composite> is missing parameters");
1494                         return handle<ValueNode_Composite>();
1495                 }
1496                 break;
1497         case 2:
1498                 if(!value_node->get_link(0) ||!value_node->get_link(1))
1499                 {
1500                         error(element,"<composite> is missing parameters");
1501                         return handle<ValueNode_Composite>();
1502                 }
1503                 break;
1504         case 3:
1505                 if(!value_node->get_link(0) ||!value_node->get_link(1) ||!value_node->get_link(2))
1506                 {
1507                         error(element,"<composite> is missing parameters");
1508                         return handle<ValueNode_Composite>();
1509                 }
1510                 break;
1511         case 4:
1512                 if(!value_node->get_link(0) ||!value_node->get_link(1) ||!value_node->get_link(2) ||!value_node->get_link(3))
1513                 {
1514                         error(element,"<composite> is missing parameters");
1515                         return handle<ValueNode_Composite>();
1516                 }
1517                 break;
1518     }
1519         return value_node;
1520 }
1521
1522 // This will also parse a bline
1523 handle<ValueNode_DynamicList>
1524 CanvasParser::parse_dynamic_list(xmlpp::Element *element,Canvas::Handle canvas)
1525 {
1526         assert(element->get_name()=="dynamic_list" || element->get_name()=="bline");
1527
1528         const float fps(canvas?canvas->rend_desc().get_frame_rate():0);
1529
1530         if(!element->get_attribute("type"))
1531         {
1532                 error(element,"Missing attribute \"type\" in <dynamic_list>");
1533                 return handle<ValueNode_DynamicList>();
1534         }
1535
1536         ValueBase::Type type=ValueBase::ident_type(element->get_attribute("type")->get_value());
1537
1538         if(!type)
1539         {
1540                 error(element,"Bad type in <dynamic_list>");
1541                 return handle<ValueNode_DynamicList>();
1542         }
1543
1544         handle<ValueNode_DynamicList> value_node;
1545         handle<ValueNode_BLine> bline_value_node;
1546
1547         if(element->get_name()=="bline")
1548         {
1549                 value_node=bline_value_node=ValueNode_BLine::create();
1550                 if(element->get_attribute("loop"))
1551                 {
1552                         String loop=element->get_attribute("loop")->get_value();
1553                         if(loop=="true" || loop=="1" || loop=="TRUE" || loop=="True")
1554                                 bline_value_node->set_loop(true);
1555                         else
1556                                 bline_value_node->set_loop(false);
1557                 }
1558
1559         }
1560         else
1561                 value_node=ValueNode_DynamicList::create(type);
1562
1563         if(!value_node)
1564         {
1565                 error(element,strprintf(_("Unable to create <dynamic_list>")));
1566                 return handle<ValueNode_DynamicList>();
1567         }
1568
1569         value_node->set_root_canvas(canvas->get_root());
1570
1571         xmlpp::Element::NodeList list = element->get_children();
1572         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1573         {
1574                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1575                 if(!child)
1576                         continue;
1577                 else
1578                 if(child->get_name()=="entry")
1579                 {
1580                         ValueNode_DynamicList::ListEntry list_entry;
1581
1582                         // Parse begin/end waypoints
1583                         {
1584                                 typedef synfig::ValueNode_DynamicList::ListEntry::Activepoint Activepoint;
1585                                 typedef synfig::ValueNode_DynamicList::ListEntry::ActivepointList ActivepointList;
1586
1587                                 String begin_sequence;
1588                                 String end_sequence;
1589
1590                                 ActivepointList &timing_info(list_entry.timing_info);
1591
1592                                 if(child->get_attribute("begin"))
1593                                         begin_sequence=child->get_attribute("begin")->get_value();
1594
1595                                 if(child->get_attribute("on"))
1596                                         begin_sequence=child->get_attribute("on")->get_value();
1597
1598                                 if(child->get_attribute("end"))
1599                                         end_sequence=child->get_attribute("end")->get_value();
1600
1601                                 if(child->get_attribute("off"))
1602                                         end_sequence=child->get_attribute("off")->get_value();
1603
1604                                 // clear out any auto-start
1605                                 if(!begin_sequence.empty())
1606                                         timing_info.clear();
1607
1608                                 //! \optimize
1609                                 while(!begin_sequence.empty())
1610                                 {
1611                                         String::iterator iter(find(begin_sequence.begin(),begin_sequence.end(),','));
1612                                         String timecode(begin_sequence.begin(), iter);
1613                                         int priority=0;
1614
1615                                         // skip whitespace before checking for a priority
1616                                         while (isspace(timecode[0]))
1617                                                 timecode=timecode.substr(1);
1618
1619                                         // If there is a priority, then grab it and remove
1620                                         // it from the timecode
1621                                         if(timecode[0]=='p')
1622                                         {
1623                                                 //priority=timecode[1]-'0';
1624                                                 //timecode=String(timecode.begin()+3,timecode.end());
1625                                                 int space=timecode.find_first_of(' ');
1626                                                 priority=atoi(String(timecode,1,space-1).c_str());
1627                                                 timecode=String(timecode.begin()+space+1,timecode.end());
1628                                                 //synfig::info("priority: %d      timecode: %s",priority,timecode.c_str());
1629                                         }
1630
1631                                         timing_info.push_back(
1632                                                 Activepoint(
1633                                                         Time(
1634                                                                 timecode,
1635                                                                 fps
1636                                                         ),
1637                                                         true,   // Mark as a "on" activepoint
1638                                                         priority
1639                                                 )
1640                                         );
1641
1642                                         if(iter==begin_sequence.end())
1643                                                 begin_sequence.clear();
1644                                         else
1645                                                 begin_sequence=String(iter+1,begin_sequence.end());
1646                                 }
1647
1648                                 //! \optimize
1649                                 while(!end_sequence.empty())
1650                                 {
1651                                         String::iterator iter(find(end_sequence.begin(),end_sequence.end(),','));
1652                                         String timecode(end_sequence.begin(),   iter);
1653                                         int priority=0;
1654
1655                                         // skip whitespace before checking for a priority
1656                                         while (isspace(timecode[0]))
1657                                                 timecode=timecode.substr(1);
1658
1659                                         // If there is a priority, then grab it and remove
1660                                         // it from the timecode
1661                                         if(timecode[0]=='p')
1662                                         {
1663                                                 //priority=timecode[1]-'0';
1664                                                 //timecode=String(timecode.begin()+3,timecode.end());
1665                                                 int space=timecode.find_first_of(' ');
1666                                                 priority=atoi(String(timecode,1,space-1).c_str());
1667                                                 timecode=String(timecode.begin()+space+1,timecode.end());
1668                                                 //synfig::info("priority: %d      timecode: %s",priority,timecode.c_str());
1669                                         }
1670
1671                                         timing_info.push_back(
1672                                                 Activepoint(
1673                                                         Time(
1674                                                                 timecode,
1675                                                                 fps
1676                                                         ),
1677                                                         false,  // Mark as a "off" activepoint
1678                                                         priority
1679                                                 )
1680                                         );
1681                                         if(iter==end_sequence.end())
1682                                                 end_sequence.clear();
1683                                         else
1684                                                 end_sequence=String(iter+1,end_sequence.end());
1685                                 }
1686
1687                                 timing_info.sort();
1688                         }
1689
1690                         if(child->get_attribute("use"))
1691                         {
1692                                 // \todo does this need to be able to read 'use="canvas"', like waypoints can now?  (see 'surefind_canvas' in this file)
1693                                 string id=child->get_attribute("use")->get_value();
1694                                 try
1695                                 {
1696                                         list_entry.value_node=canvas->surefind_value_node(id);
1697                                 }
1698                                 catch(Exception::IDNotFound)
1699                                 {
1700                                         error(child,"\"use\" attribute in <entry> references unknown ID -- "+id);
1701                                         continue;
1702                                 }
1703                         }
1704                         else
1705                         {
1706                                 xmlpp::Element::NodeList list = child->get_children();
1707                                 xmlpp::Element::NodeList::iterator iter;
1708
1709                                 // Search for the first non-text XML element
1710                                 for(iter = list.begin(); iter != list.end(); ++iter)
1711                                         if(dynamic_cast<xmlpp::Element*>(*iter)) break;
1712
1713                                 if(iter==list.end())
1714                                 {
1715                                         error(child,strprintf(_("<entry> is missing its contents or missing \"use\" element")));
1716                                         continue;
1717                                 }
1718
1719                                 list_entry.value_node=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1720
1721                                 if(!list_entry.value_node)
1722                                         error((*iter),"Parse of ValueNode failed");
1723
1724                                 // \todo do a search for more elements and warn if they are found
1725
1726                         }
1727
1728                         value_node->add(list_entry);
1729                         value_node->set_link(value_node->link_count()-1,list_entry.value_node);
1730                 }
1731                 else
1732                         error_unexpected_element(child,child->get_name());
1733         }
1734         return value_node;
1735 }
1736
1737 handle<ValueNode>
1738 CanvasParser::parse_value_node(xmlpp::Element *element,Canvas::Handle canvas)
1739 {
1740         handle<ValueNode> value_node;
1741         assert(element);
1742
1743         GUID guid;
1744
1745         if(element->get_attribute("guid"))
1746         {
1747                 guid=GUID(element->get_attribute("guid")->get_value())^canvas->get_root()->get_guid();
1748                 value_node=guid_cast<ValueNode>(guid);
1749                 if(value_node)
1750                         return value_node;
1751         }
1752
1753         // If ValueBase::ident_type() recognises the name, then we know it's a ValueBase
1754         if(element->get_name()!="canvas" && ValueBase::ident_type(element->get_name()))
1755         {
1756                 ValueBase data=parse_value(element,canvas);
1757
1758                 if(!data.is_valid())
1759                 {
1760                         error(element,strprintf(_("Bad data in <%s>"),element->get_name().c_str()));
1761                         return value_node;
1762                 }
1763
1764                 // We want to convert this ValueBase into a
1765                 // ValueNode_Const. That way, we can treat the
1766                 // ID like any other Datanode. Think of this
1767                 // as a shorthand for creating constant ValueNodes.
1768
1769                 value_node=ValueNode_Const::create(data);
1770         }
1771         else
1772         if(element->get_name()=="hermite" || element->get_name()=="animated")
1773                 value_node=parse_animated(element,canvas);
1774         else
1775         if(element->get_name()=="subtract")
1776                 value_node=parse_subtract(element,canvas);
1777         else
1778         if(element->get_name()=="composite")
1779                 value_node=parse_composite(element,canvas);
1780         else
1781         if(element->get_name()=="dynamic_list")
1782                 value_node=parse_dynamic_list(element,canvas);
1783         else
1784         if(element->get_name()=="bline") // This is not a typo. The dynamic list parser will parse a bline.
1785                 value_node=parse_dynamic_list(element,canvas);
1786         else
1787         if(LinkableValueNode::book().count(element->get_name()))
1788                 value_node=parse_linkable_value_node(element,canvas);
1789         else
1790         if(element->get_name()=="canvas")
1791                 value_node=ValueNode_Const::create(parse_canvas(element,canvas,true));
1792         else
1793         {
1794                 error_unexpected_element(element,element->get_name());
1795                 error(element, "Expected a ValueNode");
1796         }
1797
1798
1799         value_node->set_root_canvas(canvas->get_root());
1800
1801
1802         // If we were successful, and our element has
1803         // an ID attribute, go ahead and add it to the
1804         // value_node list
1805         if(value_node && element->get_attribute("id"))
1806         {
1807                 string id=element->get_attribute("id")->get_value();
1808
1809                 //value_node->set_id(id);
1810
1811                 // If there is already a value_node in the list
1812                 // with the same ID, then that is an error
1813                 try { canvas->add_value_node(value_node,id); }
1814                 catch(Exception::BadLinkName)
1815                 {
1816                         warning(element,strprintf(_("Bad ID \"%s\""),id.c_str()));
1817                         return value_node;
1818                 }
1819                 catch(Exception::IDAlreadyExists)
1820                 {
1821                         error(element,strprintf(_("Duplicate ID \"%s\""),id.c_str()));
1822                         return value_node;
1823                 }
1824                 catch(...)
1825                 {
1826                         error(element,strprintf(_("Unknown Exception thrown when adding ValueNode \"%s\""),id.c_str()));
1827                         throw;
1828                 }
1829         }
1830         value_node->set_guid(guid);
1831         return value_node;
1832 }
1833
1834 void
1835 CanvasParser::parse_canvas_defs(xmlpp::Element *element,Canvas::Handle canvas)
1836 {
1837         assert(element->get_name()=="defs");
1838         xmlpp::Element::NodeList list = element->get_children();
1839         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1840         {
1841                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1842                 if(!child)
1843                         continue;
1844                 else
1845                 if(child->get_name()=="canvas")
1846                         parse_canvas(child, canvas);
1847                 else
1848                         parse_value_node(child,canvas);
1849         }
1850 }
1851
1852 Layer::Handle
1853 CanvasParser::parse_layer(xmlpp::Element *element,Canvas::Handle canvas)
1854 {
1855
1856         assert(element->get_name()=="layer");
1857         Layer::Handle layer;
1858
1859         if(!element->get_attribute("type"))
1860         {
1861                 error(element,_("Missing \"type\" attribute to \"layer\" element"));
1862                 return Layer::Handle();
1863         }
1864
1865         layer=Layer::create(element->get_attribute("type")->get_value());
1866         layer->set_canvas(canvas);
1867
1868         if(element->get_attribute("group"))
1869         {
1870                 layer->add_to_group(
1871                         element->get_attribute("group")->get_value()
1872                 );
1873         }
1874
1875         // Handle the version attribute
1876         if(element->get_attribute("version"))
1877         {
1878                 String version(element->get_attribute("version")->get_value());
1879                 if(version>layer->get_version())
1880                         warning(element,_("Installed layer version is larger than layer version in file"));
1881                 if(version!=layer->get_version())
1882                         layer->set_version(version);
1883         }
1884
1885         // Handle the description
1886         if(element->get_attribute("desc"))
1887                 layer->set_description(element->get_attribute("desc")->get_value());
1888
1889         if(element->get_attribute("active"))
1890                 layer->set_active(element->get_attribute("active")->get_value()=="false"?false:true);
1891
1892         xmlpp::Element::NodeList list = element->get_children();
1893         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
1894         {
1895                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
1896                 if(!child)
1897                         continue;
1898                 else
1899                 if(child->get_name()=="name")
1900                         warning(child,_("<name> entry for <layer> is not yet supported. Ignoring..."));
1901                 else
1902                 if(child->get_name()=="desc")
1903                         warning(child,_("<desc> entry for <layer> is not yet supported. Ignoring..."));
1904                 else
1905                 if(child->get_name()=="param")
1906                 {
1907                         xmlpp::Element::NodeList list = child->get_children();
1908
1909                         if(!child->get_attribute("name"))
1910                         {
1911                                 error(child,_("Missing \"name\" attribute for <param>."));
1912                                 continue;
1913                         }
1914
1915                         String param_name=child->get_attribute("name")->get_value();
1916
1917                         if(child->get_attribute("use"))
1918                         {
1919                                 // If the "use" attribute is used, then the
1920                                 // element should be empty. Warn the user if
1921                                 // we find otherwise.
1922                                 if(!list.empty())
1923                                         warning(child,_("Found \"use\" attribute for <param>, but it wasn't empty. Ignoring contents..."));
1924
1925                                 String str=     child->get_attribute("use")->get_value();
1926
1927                                 if(layer->get_param(param_name).get_type()==ValueBase::TYPE_CANVAS)
1928                                 {
1929                                         if(!layer->set_param(param_name,canvas->surefind_canvas(str)))
1930                                                 error((*iter),_("Layer rejected canvas link"));
1931                                 }
1932                                 else
1933                                 try
1934                                 {
1935                                         handle<ValueNode> value_node=canvas->surefind_value_node(str);
1936
1937                                         // Assign the value_node to the dynamic parameter list
1938                                         layer->connect_dynamic_param(param_name,value_node);
1939                         }
1940                                 catch(Exception::IDNotFound)
1941                                 {
1942                                         error(child,strprintf(_("Unknown ID (%s) referenced in <param>"),str.c_str()));
1943                                 }
1944
1945                                 continue;
1946                         }
1947
1948                         xmlpp::Element::NodeList::iterator iter;
1949
1950                         // Search for the first non-text XML element
1951                         for(iter = list.begin(); iter != list.end(); ++iter)
1952                                 if(dynamic_cast<xmlpp::Element*>(*iter))
1953                                         break;
1954                                 //if(!(!dynamic_cast<xmlpp::Element*>(*iter) && (*iter)->get_name()=="text"||(*iter)->get_name()=="comment"   )) break;
1955
1956                         if(iter==list.end())
1957                         {
1958                                 error(child,_("<param> is either missing its contents, or missing a \"use\" attribute."));
1959                                 continue;
1960                         }
1961
1962                         // If we recognise the element name as a
1963                         // ValueBase, then treat is at one
1964                         if(/*(*iter)->get_name()!="canvas" && */ValueBase::ident_type((*iter)->get_name()) && !dynamic_cast<xmlpp::Element*>(*iter)->get_attribute("guid"))
1965                         {
1966                                 ValueBase data=parse_value(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1967
1968                                 if(!data.is_valid())
1969                                 {
1970                                         error((*iter),_("Bad data for <param>"));
1971                                         continue;
1972                                 }
1973
1974                                 // Set the layer's parameter, and make sure that
1975                                 // the layer liked it
1976                                 if(!layer->set_param(param_name,data))
1977                                 {
1978                                         warning((*iter),_("Layer rejected value for <param>"));
1979                                         continue;
1980                                 }
1981                         }
1982                         else    // ... otherwise, we assume that it is a ValueNode
1983                         {
1984                                 handle<ValueNode> value_node=parse_value_node(dynamic_cast<xmlpp::Element*>(*iter),canvas);
1985
1986                                 if(!value_node)
1987                                 {
1988                                         error((*iter),_("Bad data for <param>"));
1989                                         continue;
1990                                 }
1991
1992                                 // Assign the value_node to the dynamic parameter list
1993                                 layer->connect_dynamic_param(param_name,value_node);
1994                         }
1995
1996                         // Warn if there is trash after the param value
1997                         for(iter++; iter != list.end(); ++iter)
1998                                 if(dynamic_cast<xmlpp::Element*>(*iter))
1999                                         warning((*iter),strprintf(_("Unexpected element <%s> after <param> data, ignoring..."),(*iter)->get_name().c_str()));
2000                         continue;
2001                 }
2002                 else
2003                         error_unexpected_element(child,child->get_name());
2004         }
2005
2006         layer->reset_version();
2007         return layer;
2008 }
2009
2010 Canvas::Handle
2011 CanvasParser::parse_canvas(xmlpp::Element *element,Canvas::Handle parent,bool inline_, String filename)
2012 {
2013
2014         if(element->get_name()!="canvas")
2015         {
2016                 error_unexpected_element(element,element->get_name(),"canvas");
2017                 return Canvas::Handle();
2018         }
2019         Canvas::Handle canvas;
2020
2021
2022
2023         if(parent && (element->get_attribute("id") || inline_))
2024         {
2025                 if(inline_)
2026                 {
2027                         canvas=Canvas::create_inline(parent);
2028                 }
2029                 else
2030                 {
2031                         try
2032                         {
2033                                 canvas=parent->find_canvas(element->get_attribute("id")->get_value());
2034                         }
2035                         catch(...)
2036                         {
2037                                 canvas=parent->new_child_canvas(element->get_attribute("id")->get_value());
2038                         }
2039                 }
2040                 canvas->rend_desc().clear_flags();
2041         }
2042         else
2043         {
2044                 canvas=Canvas::create();
2045                 if(filename=="/dev/stdin")
2046                         canvas->set_file_name("./stdin.sif");
2047                 else
2048                         canvas->set_file_name(filename);
2049                 canvas->rend_desc().clear_flags();
2050         }
2051
2052         if(element->get_attribute("guid"))
2053         {
2054                 GUID guid(element->get_attribute("guid")->get_value());
2055                 if(guid_cast<Canvas>(guid))
2056                         return guid_cast<Canvas>(guid);
2057                 else
2058                         canvas->set_guid(guid);
2059         }
2060
2061         if(element->get_attribute("width"))
2062                 canvas->rend_desc().set_w(atoi(element->get_attribute("width")->get_value().c_str()));
2063
2064         if(element->get_attribute("height"))
2065                 canvas->rend_desc().set_h(atoi(element->get_attribute("height")->get_value().c_str()));
2066
2067         if(element->get_attribute("xres"))
2068                 canvas->rend_desc().set_x_res(atof(element->get_attribute("xres")->get_value().c_str()));
2069
2070         if(element->get_attribute("yres"))
2071                 canvas->rend_desc().set_y_res(atof(element->get_attribute("yres")->get_value().c_str()));
2072
2073
2074         if(element->get_attribute("fps"))
2075                 canvas->rend_desc().set_frame_rate(atof(element->get_attribute("fps")->get_value().c_str()));
2076
2077         if(element->get_attribute("start-time"))
2078                 canvas->rend_desc().set_time_start(Time(element->get_attribute("start-time")->get_value(),canvas->rend_desc().get_frame_rate()));
2079
2080         if(element->get_attribute("begin-time"))
2081                 canvas->rend_desc().set_time_start(Time(element->get_attribute("begin-time")->get_value(),canvas->rend_desc().get_frame_rate()));
2082
2083         if(element->get_attribute("end-time"))
2084                 canvas->rend_desc().set_time_end(Time(element->get_attribute("end-time")->get_value(),canvas->rend_desc().get_frame_rate()));
2085
2086         if(element->get_attribute("antialias"))
2087                 canvas->rend_desc().set_antialias(atoi(element->get_attribute("antialias")->get_value().c_str()));
2088
2089         if(element->get_attribute("view-box"))
2090         {
2091                 string values=element->get_attribute("view-box")->get_value();
2092                 Vector
2093                         tl,
2094                         br;
2095                 tl[0]=atof(string(values.data(),values.find(' ')).c_str());
2096                 values=string(values.begin()+values.find(' ')+1,values.end());
2097                 tl[1]=atof(string(values.data(),values.find(' ')).c_str());
2098                 values=string(values.begin()+values.find(' ')+1,values.end());
2099                 br[0]=atof(string(values.data(),values.find(' ')).c_str());
2100                 values=string(values.begin()+values.find(' ')+1,values.end());
2101                 br[1]=atof(values.c_str());
2102
2103                 canvas->rend_desc().set_tl(tl);
2104                 canvas->rend_desc().set_br(br);
2105         }
2106
2107         if(element->get_attribute("bgcolor"))
2108         {
2109                 string values=element->get_attribute("bgcolor")->get_value();
2110                 Color bg;
2111
2112                 bg.set_r(atof(string(values.data(),values.find(' ')).c_str()));
2113                 values=string(values.begin()+values.find(' ')+1,values.end());
2114
2115                 bg.set_g(atof(string(values.data(),values.find(' ')).c_str()));
2116                 values=string(values.begin()+values.find(' ')+1,values.end());
2117
2118                 bg.set_b(atof(string(values.data(),values.find(' ')).c_str()));
2119                 values=string(values.begin()+values.find(' ')+1,values.end());
2120
2121                 bg.set_a(atof(values.c_str()));
2122
2123                 canvas->rend_desc().set_bg_color(bg);
2124         }
2125
2126         if(element->get_attribute("focus"))
2127         {
2128                 string values=element->get_attribute("focus")->get_value();
2129                 Vector focus;
2130
2131                 focus[0]=atof(string(values.data(),values.find(' ')).c_str());
2132                 values=string(values.begin()+values.find(' ')+1,values.end());
2133                 focus[1]=atof(values.c_str());
2134
2135                 canvas->rend_desc().set_focus(focus);
2136         }
2137
2138         canvas->rend_desc().set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2139
2140         xmlpp::Element::NodeList list = element->get_children();
2141         for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2142         {
2143                 xmlpp::Element *child(dynamic_cast<xmlpp::Element*>(*iter));
2144                 if(child)
2145                 {
2146                         if(child->get_name()=="defs")
2147                         {
2148                                 if(canvas->is_inline())
2149                                         error(child,_("Inline canvas cannot have a <defs> section"));
2150                                 parse_canvas_defs(child, canvas);
2151                         }
2152                         else
2153                         if(child->get_name()=="keyframe")
2154                         {
2155                                 if(canvas->is_inline())
2156                                 {
2157                                         warning(child,_("Inline canvas cannot have keyframes"));
2158                                         continue;
2159                                 }
2160
2161                                 canvas->keyframe_list().add(parse_keyframe(child,canvas));
2162                                 canvas->keyframe_list().sync();
2163                         }
2164                         else
2165                         if(child->get_name()=="meta")
2166                         {
2167                                 if(canvas->is_inline())
2168                                 {
2169                                         warning(child,_("Inline canvases cannot have metadata"));
2170                                         continue;
2171                                 }
2172
2173                                 String name,content;
2174
2175                                 if(!child->get_attribute("name"))
2176                                 {
2177                                         warning(child,_("<meta> must have a name"));
2178                                         continue;
2179                                 }
2180
2181                                 if(!child->get_attribute("content"))
2182                                 {
2183                                         warning(child,_("<meta> must have content"));
2184                                         continue;
2185                                 }
2186
2187                                 canvas->set_meta_data(child->get_attribute("name")->get_value(),child->get_attribute("content")->get_value());
2188                         }
2189                         else if(child->get_name()=="name")
2190                         {
2191                                 xmlpp::Element::NodeList list = child->get_children();
2192
2193                                 // If we don't have any name, warn
2194                                 if(list.empty())
2195                                         warning(child,_("blank \"name\" entitity"));
2196
2197                                 string tmp;
2198                                 for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2199                                         if(dynamic_cast<xmlpp::TextNode*>(*iter))tmp+=dynamic_cast<xmlpp::TextNode*>(*iter)->get_content();
2200                                 canvas->set_name(tmp);
2201                         }
2202                         else
2203                         if(child->get_name()=="desc")
2204                         {
2205
2206                                 xmlpp::Element::NodeList list = child->get_children();
2207
2208                                 // If we don't have any description, warn
2209                                 if(list.empty())
2210                                         warning(child,_("blank \"desc\" entitity"));
2211
2212                                 string tmp;
2213                                 for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2214                                         if(dynamic_cast<xmlpp::TextNode*>(*iter))tmp+=dynamic_cast<xmlpp::TextNode*>(*iter)->get_content();
2215                                 canvas->set_description(tmp);
2216                         }
2217                         else
2218                         if(child->get_name()=="author")
2219                         {
2220
2221                                 xmlpp::Element::NodeList list = child->get_children();
2222
2223                                 // If we don't have any description, warn
2224                                 if(list.empty())
2225                                         warning(child,_("blank \"author\" entitity"));
2226
2227                                 string tmp;
2228                                 for(xmlpp::Element::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
2229                                         if(dynamic_cast<xmlpp::TextNode*>(*iter))tmp+=dynamic_cast<xmlpp::TextNode*>(*iter)->get_content();
2230                                 canvas->set_author(tmp);
2231                         }
2232                         else
2233                         if(child->get_name()=="layer")
2234                         {
2235                                 //if(canvas->is_inline())
2236                                 //      canvas->push_front(parse_layer(child,canvas->parent()));
2237                                 //else
2238                                         canvas->push_front(parse_layer(child,canvas));
2239                         }
2240                         else
2241                                 error_unexpected_element(child,child->get_name());
2242                 }
2243 //              else
2244 //              if((child->get_name()=="text"||child->get_name()=="comment") && child->has_child_text())
2245 //                      continue;
2246         }
2247
2248         if(canvas->value_node_list().placeholder_count())
2249         {
2250                 error(element,strprintf(_("Canvas %s has undefined ValueNodes"),canvas->get_id().c_str()));
2251         }
2252
2253         return canvas;
2254 }
2255
2256 Canvas::Handle
2257 CanvasParser::parse_from_file(const String &file)
2258 {
2259         return parse_from_file_as(file,file);
2260 }
2261
2262 Canvas::Handle
2263 CanvasParser::parse_from_file_as(const String &file_,const String &as_)
2264 {
2265         CHECK_EXPIRE_TIME();
2266         try
2267         {
2268         ChangeLocale change_locale(LC_NUMERIC, "C");
2269                 String file(unix_to_local_path(file_));
2270                 String as(unix_to_local_path(as_));
2271
2272                 if(get_open_canvas_map().count(etl::absolute_path(as)))
2273                         return get_open_canvas_map()[etl::absolute_path(as)];
2274
2275                 filename=as;
2276                 total_warnings_=0;
2277                 xmlpp::DomParser parser(file);
2278                 if(parser)
2279                 {
2280                         Canvas::Handle canvas(parse_canvas(parser.get_document()->get_root_node(),0,false,as));
2281                         get_open_canvas_map()[etl::absolute_path(as)]=canvas;
2282                         canvas->signal_deleted().connect(sigc::bind(sigc::ptr_fun(_remove_from_open_canvas_map),canvas.get()));
2283                         canvas->signal_file_name_changed().connect(sigc::bind(sigc::ptr_fun(_canvas_file_name_changed),canvas.get()));
2284
2285
2286
2287                         const ValueNodeList& value_node_list(canvas->value_node_list());
2288
2289                         again:
2290                         ValueNodeList::const_iterator iter;
2291                         for(iter=value_node_list.begin();iter!=value_node_list.end();++iter)
2292                         {
2293                                 ValueNode::Handle value_node(*iter);
2294                                 if(value_node->is_exported() && value_node->get_id().find("Unnamed")==0)
2295                                 {
2296                                         canvas->remove_value_node(value_node);
2297                                         goto again;
2298                                 }
2299                         }
2300
2301                         return canvas;
2302                 }
2303         }
2304         catch(Exception::BadLinkName) { synfig::error("BadLinkName Thrown"); }
2305         catch(Exception::BadType) { synfig::error("BadType Thrown"); }
2306         catch(Exception::FileNotFound) { synfig::error("FileNotFound Thrown"); }
2307         catch(Exception::IDNotFound) { synfig::error("IDNotFound Thrown"); }
2308         catch(Exception::IDAlreadyExists) { synfig::error("IDAlreadyExists Thrown"); }
2309         catch(const std::exception& ex)
2310         {
2311                 synfig::error("Standard Exception: "+String(ex.what()));
2312                 return Canvas::Handle();
2313         }
2314         catch(const String& str)
2315         {
2316                 cerr<<str<<endl;
2317                 //      synfig::error(str);
2318                 return Canvas::Handle();
2319         }
2320         return Canvas::Handle();
2321 }
2322
2323 Canvas::Handle
2324 CanvasParser::parse_from_string(const String &data)
2325 {
2326         CHECK_EXPIRE_TIME();
2327
2328         try
2329         {
2330         ChangeLocale change_locale(LC_NUMERIC, "C");
2331                 filename=_("<INTERNAL>");
2332                 total_warnings_=0;
2333                 xmlpp::DomParser parser;
2334                 parser.parse_memory(data);
2335                 xmlpp::Element *root=parser.get_document()->get_root_node();
2336                 if(parser)
2337                 {
2338                         Canvas::Handle canvas(parse_canvas(root));
2339                         canvas->signal_deleted().connect(sigc::bind(sigc::ptr_fun(_remove_from_open_canvas_map),canvas.get()));
2340                         canvas->signal_file_name_changed().connect(sigc::bind(sigc::ptr_fun(_canvas_file_name_changed),canvas.get()));
2341
2342                         const ValueNodeList& value_node_list(canvas->value_node_list());
2343                         again:
2344                         ValueNodeList::const_iterator iter;
2345                         for(iter=value_node_list.begin();iter!=value_node_list.end();++iter)
2346                         {
2347                                 ValueNode::Handle value_node(*iter);
2348                                 if(value_node->is_exported() && value_node->get_id().find("Unnamed")==0)
2349                                 {
2350                                         canvas->remove_value_node(value_node);
2351                                         goto again;
2352                                 }
2353                         }
2354
2355                         return canvas;
2356                 }
2357         }
2358         catch(Exception::BadLinkName) { synfig::error("BadLinkName Thrown"); }
2359         catch(Exception::BadType) { synfig::error("BadType Thrown"); }
2360         catch(Exception::FileNotFound) { synfig::error("FileNotFound Thrown"); }
2361         catch(Exception::IDNotFound) { synfig::error("IDNotFound Thrown"); }
2362         catch(Exception::IDAlreadyExists) { synfig::error("IDAlreadyExists Thrown"); }
2363         catch(const std::exception& ex)
2364         {
2365                 synfig::error("Standard Exception: "+String(ex.what()));
2366                 return Canvas::Handle();
2367         }
2368         catch(const String& str)
2369         {
2370                 cerr<<str<<endl;
2371                 //      synfig::error(str);
2372                 return Canvas::Handle();
2373         }
2374         return Canvas::Handle();
2375 }