synfig-studio/trunk/src/synfigapp/canvasinterface.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file canvasinterface.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 //#include <iostream>
  34
  35 #include <ETL/clock>
  36 #include <synfig/valuenode_scale.h>
  37 #include <synfig/valuenode_timedswap.h>
  38 #include <synfig/valuenode_composite.h>
  39 #include <synfig/valuenode_subtract.h>
  40 #include <synfig/valuenode_linear.h>
  41 #include <synfig/valuenode_reference.h>
  42 #include <synfig/valuenode_twotone.h>
  43 #include <synfig/valuenode_stripes.h>
  44
  45 #include <synfig/waypoint.h>
  46 #include <synfig/loadcanvas.h>
  47 #include <synfig/importer.h>
  48 #include <synfig/guidset.h>
  49
  50 #include "canvasinterface.h"
  51 #include "instance.h"
  52
  53 #include "actions/layeradd.h"
  54 #include "actions/valuedescconvert.h"
  55 #include "actions/valuenodeadd.h"
  56 #include "actions/editmodeset.h"
  57 #include "action_system.h"
  58
  59 #include "main.h"
  60
  61 #include <synfig/gradient.h>
  62
  63 #include "general.h"
  64
  65 #endif
  66
  67 /* === U S I N G =========================================================== */
  68
  69 using namespace std;
  70 using namespace etl;
  71 using namespace synfig;
  72 using namespace synfigapp;
  73
  74 /* === M A C R O S ========================================================= */
  75
  76 /* === G L O B A L S ======================================================= */
  77
  78 /* === P R O C E D U R E S ================================================= */
  79
  80 /* === M E T H O D S ======================================================= */
  81
  82 CanvasInterface::CanvasInterface(etl::loose_handle<Instance> instance,etl::handle<synfig::Canvas> canvas):
  83         instance_(instance),
  84         canvas_(canvas),
  85         cur_time_(canvas->rend_desc().get_frame_start()),
  86         mode_(MODE_NORMAL|MODE_ANIMATE_PAST|MODE_ANIMATE_FUTURE)
  87 {
  88         set_selection_manager(get_instance()->get_selection_manager());
  89         set_ui_interface(get_instance()->get_ui_interface());
  90 }
  91
  92 CanvasInterface::~CanvasInterface()
  93 {
  94         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
  95                 synfig::info("CanvasInterface::~CanvasInterface(): Deleted");
  96 }
  97
  98 void
  99 CanvasInterface::set_time(synfig::Time x)
 100 {
 101         if(get_canvas()->rend_desc().get_frame_rate())
 102         {
 103                 float fps(get_canvas()->rend_desc().get_frame_rate());
 104                 Time r(x.round(fps));
 105                 //synfig::info("CanvasInterface::set_time(): %s rounded to %s\n",x.get_string(fps).c_str(),r.get_string(fps).c_str());
 106                 x=r;
 107         }
 108         if(cur_time_.is_equal(x))
 109                 return;
 110         get_canvas()->set_time(cur_time_=x);
 111
 112         // update the time in all the child canvases
 113         Canvas::Children children = get_canvas()->get_root()->children();
 114         handle<CanvasInterface> interface;
 115         for (Canvas::Children::iterator iter = children.begin(); iter != children.end(); iter++)
 116                 if ((interface = get_instance()->find_canvas_interface(*iter)) != this)
 117                         interface->set_time(interface->get_canvas()->get_time());
 118
 119         signal_time_changed()();
 120         signal_dirty_preview()();
 121 }
 122
 123 synfig::Time
 124 CanvasInterface::get_time()const
 125 {
 126         return cur_time_;
 127 }
 128
 129 void
 130 CanvasInterface::refresh_current_values()
 131 {
 132         get_canvas()->set_time(cur_time_);
 133         signal_time_changed()();
 134         signal_dirty_preview()();
 135 }
 136
 137 etl::handle<CanvasInterface>
 138 CanvasInterface::create(etl::loose_handle<Instance> instance, etl::handle<synfig::Canvas> canvas)
 139 {
 140         etl::handle<CanvasInterface> intrfc;
 141         intrfc=new CanvasInterface(instance,canvas);
 142         instance->canvas_interface_list().push_front(intrfc);
 143         return intrfc;
 144 }
 145
 146 void
 147 CanvasInterface::set_mode(Mode x)
 148 {
 149         Action::Handle  action(Action::EditModeSet::create());
 150
 151         assert(action);
 152
 153         action->set_param("canvas",get_canvas());
 154         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 155         action->set_param("edit_mode",x);
 156
 157         if(!action->is_ready())
 158         {
 159                 get_ui_interface()->error(_("Action Not Ready, unable to change mode"));
 160                 assert(0);
 161                 return;
 162         }
 163
 164         if(!get_instance()->perform_action(action))
 165                 get_ui_interface()->error(_("Unable to change mode"));
 166
 167 //      mode_=x;
 168 //      signal_mode_changed_(x);
 169 }
 170
 171 CanvasInterface::Mode
 172 CanvasInterface::get_mode()const
 173 {
 174         return mode_;
 175 }
 176
 177
 178
 179 Layer::Handle
 180 CanvasInterface::add_layer_to(synfig::String name, synfig::Canvas::Handle canvas, int depth)
 181 {
 182         synfigapp::Action::PassiveGrouper group(get_instance().get(),_("Add Layer To"));
 183
 184         Layer::Handle   layer(Layer::create(name));
 185
 186         assert(layer);
 187
 188         if(!layer)
 189                 return 0;
 190
 191         if(canvas!=get_canvas() && !canvas->is_inline())
 192         {
 193                 synfig::error("Bad canvas passed to \"add_layer_to\"");
 194                 return 0;
 195         }
 196
 197         // automatically export the Index parameter of new Duplicate layers
 198         if (name == "duplicate")
 199                 for (int i = 1; ; i++)
 200                 {
 201                         String name = strprintf(_("Index %d"), i);
 202                         try
 203                         {
 204                                 canvas->find_value_node(name);
 205                         }
 206                         catch (Exception::IDNotFound x)
 207                         {
 208                                 add_value_node(layer->dynamic_param_list().find("index")->second, name);
 209                                 break;
 210                         }
 211                 }
 212
 213         layer->set_canvas(canvas);
 214
 215         // Apply some defaults
 216         if(layer->set_param("fg",synfigapp::Main::get_foreground_color()))
 217                 layer->set_param("bg",synfigapp::Main::get_background_color());
 218         else
 219                 layer->set_param("color",synfigapp::Main::get_foreground_color());
 220
 221         layer->set_param("width",synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc()));
 222         layer->set_param("gradient",synfigapp::Main::get_gradient());
 223         if(name!="zoom")
 224                 layer->set_param("amount",synfigapp::Main::get_opacity());
 225         layer->set_param("blend_method",synfigapp::Main::get_blend_method());
 226
 227         {
 228                 // Grab the layer's list of parameters
 229                 Layer::ParamList paramlist=layer->get_param_list();
 230                 Layer::ParamList::iterator iter;
 231
 232                 // loop through the static parameters
 233                 for(iter=paramlist.begin();iter!=paramlist.end();++iter)
 234                 {
 235                         ValueNode::Handle value_node;
 236
 237                         // if we find any which are list values then make them
 238                         // into dynamic list valuenodes, unless every element of
 239                         // the list is a blinepoint, in which case convert it to a
 240                         // bline
 241                         if(iter->second.get_type()==ValueBase::TYPE_LIST)
 242                         {
 243                                 // check whether it's a list of blinepoints only
 244                                 vector<ValueBase> list(iter->second.get_list());
 245                                 if (list.size())
 246                                 {
 247                                         vector<ValueBase>::iterator iter2;
 248                                         for (iter2 = list.begin(); iter2 != list.end(); iter2++)
 249                                                 if (iter2->get_type() != ValueBase::TYPE_BLINEPOINT)
 250                                                         break;
 251                                         if (iter2 == list.end())
 252                                                 value_node=LinkableValueNode::create("bline",iter->second);
 253                                 }
 254
 255                                 if (!value_node)
 256                                         value_node=LinkableValueNode::create("dynamic_list",iter->second);
 257                         }
 258                         // otherwise, if it's a type that can be converted to
 259                         // 'composite' (other than the types that can be radial
 260                         // composite) then do so
 261                         else if(LinkableValueNode::check_type("composite",iter->second.get_type()) &&
 262                                          (iter->second.get_type()!=ValueBase::TYPE_COLOR &&
 263                                           iter->second.get_type()!=ValueBase::TYPE_VECTOR))
 264                                 value_node=LinkableValueNode::create("composite",iter->second);
 265
 266                         if(value_node)
 267                                 layer->connect_dynamic_param(iter->first,value_node);
 268                 }
 269         }
 270
 271         // Action to add the layer
 272         Action::Handle  action(Action::LayerAdd::create());
 273
 274         assert(action);
 275         if(!action)
 276                 return 0;
 277
 278         action->set_param("canvas",canvas);
 279         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 280         action->set_param("new",layer);
 281
 282         if(!action->is_ready())
 283         {
 284                 get_ui_interface()->error(_("Action Not Ready"));
 285                 return 0;
 286         }
 287
 288         if(!get_instance()->perform_action(action))
 289         {
 290                 get_ui_interface()->error(_("Action Failed."));
 291                 return 0;
 292         }
 293
 294         // synfig::info("DEPTH=%d",depth);
 295
 296         // Action to move the layer (if necessary)
 297         if(depth>0)
 298         {
 299                 Action::Handle  action(Action::create("layer_move"));
 300
 301                 assert(action);
 302                 if(!action)
 303                         return 0;
 304
 305                 action->set_param("canvas",canvas);
 306                 action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 307                 action->set_param("layer",layer);
 308                 action->set_param("new_index",depth);
 309
 310                 if(!action->is_ready())
 311                 {
 312                         get_ui_interface()->error(_("Move Action Not Ready"));
 313                         return 0;
 314                 }
 315
 316                 if(!get_instance()->perform_action(action))
 317                 {
 318                         get_ui_interface()->error(_("Move Action Failed."));
 319                         return 0;
 320                 }
 321         }
 322
 323
 324         return layer;
 325 }
 326
 327
 328 bool
 329 CanvasInterface::convert(ValueDesc value_desc, synfig::String type)
 330 {
 331         Action::Handle  action(Action::ValueDescConvert::create());
 332
 333         assert(action);
 334         if(!action)
 335                 return 0;
 336
 337         action->set_param("canvas",get_canvas());
 338         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 339         action->set_param("value_desc",value_desc);
 340         action->set_param("type",type);
 341         action->set_param("time",get_time());
 342
 343         if(!action->is_ready())
 344         {
 345                 get_ui_interface()->error(_("Action Not Ready"));
 346                 return 0;
 347         }
 348
 349         if(get_instance()->perform_action(action))
 350                 return true;
 351
 352         get_ui_interface()->error(_("Action Failed."));
 353         return false;
 354 }
 355
 356 bool
 357 CanvasInterface::add_value_node(synfig::ValueNode::Handle value_node, synfig::String name)
 358 {
 359         if(name.empty())
 360         {
 361                 get_ui_interface()->error(_("Empty name!"));
 362                 return false;
 363         }
 364
 365         Action::Handle  action(Action::ValueNodeAdd::create());
 366
 367         assert(action);
 368         if(!action)
 369                 return 0;
 370
 371         action->set_param("canvas",get_canvas());
 372         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 373         action->set_param("new",value_node);
 374         action->set_param("name",name);
 375
 376         if(!action->is_ready())
 377         {
 378                 get_ui_interface()->error(_("Action Not Ready"));
 379                 return 0;
 380         }
 381
 382         if(get_instance()->perform_action(action))
 383                 return true;
 384
 385         get_ui_interface()->error(_("Action Failed."));
 386         return false;
 387 }
 388
 389 Action::ParamList
 390 CanvasInterface::generate_param_list(const ValueDesc &value_desc)
 391 {
 392         synfigapp::Action::ParamList param_list;
 393         param_list.add("time",get_time());
 394         param_list.add("canvas_interface",etl::handle<CanvasInterface>(this));
 395         param_list.add("canvas",get_canvas());
 396
 397         param_list.add("value_desc",value_desc);
 398
 399         if(value_desc.parent_is_value_node())
 400                 param_list.add("parent_value_node",value_desc.get_parent_value_node());
 401
 402         if(value_desc.is_value_node())
 403                 param_list.add("value_node",value_desc.get_value_node());
 404
 405         if(value_desc.is_const())
 406         {
 407                 // Fix 1868911: if we put a ValueBase holding a Canvas handle
 408                 // into the param_list and then export the canvas, the handle
 409                 // will miss out of having its reference count reduced,
 410                 // because by the time the handle is destructed the canvas
 411                 // will no longer be inline.  So let's not propogate that
 412                 // ValueBase any further than here.
 413                 if (value_desc.get_value_type() == ValueBase::TYPE_CANVAS)
 414                         param_list.add("value",Canvas::LooseHandle(value_desc.get_value().get(Canvas::LooseHandle())));
 415                 else
 416                         param_list.add("value",value_desc.get_value());
 417         }
 418
 419         if(value_desc.parent_is_layer_param())
 420         {
 421                 param_list.add("parent_layer",value_desc.get_layer());
 422                 param_list.add("parent_layer_param",value_desc.get_param_name());
 423         }
 424
 425         {
 426                 synfigapp::SelectionManager::ChildrenList children_list;
 427                 children_list=get_selection_manager()->get_selected_children();
 428                 if(!value_desc.parent_is_canvas() && children_list.size()==1)
 429                 {
 430                         param_list.add("dest",value_desc);
 431                         param_list.add("src",children_list.front().get_value_node());
 432                 }
 433         }
 434         return param_list;
 435 }
 436
 437 Action::ParamList
 438 CanvasInterface::generate_param_list(const std::list<synfigapp::ValueDesc> &value_desc_list)
 439 {
 440         synfigapp::Action::ParamList param_list;
 441         param_list.add("time",get_time());
 442         param_list.add("canvas_interface",etl::handle<CanvasInterface>(this));
 443         param_list.add("canvas",get_canvas());
 444
 445         std::list<synfigapp::ValueDesc>::const_iterator iter;
 446         for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)
 447         {
 448                 param_list.add("value_desc",*iter);
 449                 if(iter->is_value_node())
 450                 {
 451                         param_list.add("value_node",iter->get_value_node());
 452                 }
 453         }
 454
 455
 456         return param_list;
 457 }
 458
 459 void
 460 CanvasInterface::set_rend_desc(const synfig::RendDesc &rend_desc)
 461 {
 462         Action::Handle  action(Action::create("canvas_rend_desc_set"));
 463
 464         assert(action);
 465         if(!action)
 466                 return;
 467
 468         action->set_param("canvas",get_canvas());
 469         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 470         action->set_param("rend_desc",rend_desc);
 471
 472         if(!get_instance()->perform_action(action))
 473                 get_ui_interface()->error(_("Action Failed."));
 474 }
 475
 476 bool
 477 CanvasInterface::set_name(const synfig::String &x)
 478 {
 479         //! \todo This needs to be converted into an action
 480         get_canvas()->set_name(x);
 481         signal_id_changed_();
 482         return true;
 483 }
 484
 485 bool
 486 CanvasInterface::set_description(const synfig::String &x)
 487 {
 488         //! \todo This needs to be converted into an action
 489         get_canvas()->set_description(x);
 490         return true;
 491 }
 492
 493 bool
 494 CanvasInterface::set_id(const synfig::String &x)
 495 {
 496         //! \todo This needs to be converted into an action
 497         get_canvas()->set_id(x);
 498         signal_id_changed_();
 499         return true;
 500 }
 501
 502
 503 void
 504 CanvasInterface::jump_to_next_keyframe()
 505 {
 506         synfig::info("Current time: %s",get_time().get_string().c_str());
 507         try
 508         {
 509                 synfig::Keyframe keyframe(*get_canvas()->keyframe_list().find_next(get_time()));
 510                 synfig::info("Jumping to keyframe \"%s\" at %s",keyframe.get_description().c_str(),keyframe.get_time().get_string().c_str());
 511                 set_time(keyframe.get_time());
 512         }
 513         catch(...) { synfig::warning("Unable to find next keyframe"); }
 514 }
 515
 516 void
 517 CanvasInterface::jump_to_prev_keyframe()
 518 {
 519         synfig::info("Current time: %s",get_time().get_string().c_str());
 520         try
 521         {
 522                 synfig::Keyframe keyframe(*get_canvas()->keyframe_list().find_prev(get_time()));
 523                 synfig::info("Jumping to keyframe \"%s\" at %s",keyframe.get_description().c_str(),keyframe.get_time().get_string().c_str());
 524                 set_time(keyframe.get_time());
 525         }
 526         catch(...) { synfig::warning("Unable to find prev keyframe"); }
 527 }
 528
 529 bool
 530 CanvasInterface::import(const synfig::String &filename, bool /*copy*/)
 531 {
 532         Action::PassiveGrouper group(get_instance().get(),_("Import Image"));
 533
 534         synfig::info("Attempting to import "+filename);
 535
 536         if (filename_extension(filename) == "")
 537         {
 538                 get_ui_interface()->error(_("Filename must have an extension!"));
 539                 return false;
 540         }
 541
 542         String ext(filename_extension(filename));
 543         if (ext.size()) ext = ext.substr(1); // skip initial '.'
 544         std::transform(ext.begin(),ext.end(),ext.begin(),&::tolower);
 545
 546         // If this is a SIF file, then we need to do things slightly differently
 547         if(ext=="sif" || ext=="sifz")try
 548         {
 549
 550                 Canvas::Handle outside_canvas(synfig::open_canvas(filename));
 551                 if(!outside_canvas)
 552                         throw String(_("Unable to open this composition"));
 553
 554                 Layer::Handle layer(add_layer_to("PasteCanvas",get_canvas()));
 555                 if(!layer)
 556                         throw String(_("Unable to create \"Paste Canvas\" layer"));
 557                 if(!layer->set_param("canvas",ValueBase(outside_canvas)))
 558                         throw int();
 559
 560                 //layer->set_description(basename(filename));
 561                 signal_layer_new_description()(layer,filename);
 562                 return true;
 563         }
 564         catch(String x)
 565         {
 566                 get_ui_interface()->error(x+" -- "+filename);
 567                 return false;
 568         }
 569         catch(...)
 570         {
 571                 get_ui_interface()->error(_("Uncaught exception when attempting\nto open this composition -- ")+filename);
 572                 return false;
 573         }
 574
 575         if(!Importer::book().count(ext))
 576         {
 577                 get_ui_interface()->error(_("I don't know how to open images of this type -- ")+ext);
 578                 return false;
 579         }
 580
 581         try
 582         {
 583                 Layer::Handle layer(add_layer_to("Import",get_canvas()));
 584                 int w,h;
 585                 if(!layer)
 586                         throw int();
 587                 if(!layer->set_param("filename",ValueBase(filename)))
 588                         throw int();
 589                 w=layer->get_param("_width").get(int());
 590                 h=layer->get_param("_height").get(int());
 591                 if(w&&h)
 592                 {
 593                         Vector size=ValueBase(get_canvas()->rend_desc().get_br()-get_canvas()->rend_desc().get_tl());
 594                         Vector x;
 595                         if(size[0]<size[1])
 596                         {
 597                                 x[0]=size[0];
 598                                 x[1]=size[0]/w*h;
 599                                 if((size[0]<0) ^ (size[1]<0))
 600                                         x[1]=-x[1];
 601                         }
 602                         else
 603                         {
 604                                 x[1]=size[1];
 605                                 x[0]=size[1]/h*w;
 606                                 if((size[0]<0) ^ (size[1]<0))
 607                                         x[0]=-x[0];
 608                         }
 609                         if(!layer->set_param("tl",ValueBase(-x/2)))
 610                                 throw int();
 611                         if(!layer->set_param("br",ValueBase(x/2)))
 612                                 throw int();
 613                 }
 614                 else
 615                 {
 616                         if(!layer->set_param("tl",ValueBase(get_canvas()->rend_desc().get_tl())))
 617                                 throw int();
 618                         if(!layer->set_param("br",ValueBase(get_canvas()->rend_desc().get_br())))
 619                                 throw int();
 620                 }
 621
 622                 layer->set_description(basename(filename));
 623                 signal_layer_new_description()(layer,filename);
 624
 625                 return true;
 626         }
 627         catch(...)
 628         {
 629                 get_ui_interface()->error("Unable to import "+filename);
 630                 group.cancel();
 631                 return false;
 632         }
 633 }
 634
 635
 636 void
 637 CanvasInterface::waypoint_duplicate(synfigapp::ValueDesc value_desc,synfig::Waypoint waypoint)
 638 {
 639         ValueNode::Handle value_node();
 640         waypoint_duplicate(value_desc.get_value_node(), waypoint);
 641 }
 642
 643 void
 644 CanvasInterface::waypoint_duplicate(ValueNode::Handle value_node,synfig::Waypoint waypoint)
 645 {
 646         Action::Handle  action(Action::create("waypoint_set_smart"));
 647
 648         assert(action);
 649         if(!action)
 650                 return;
 651
 652         waypoint.make_unique();
 653         waypoint.set_time(get_time());
 654
 655         action->set_param("canvas",get_canvas());
 656         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 657         action->set_param("waypoint",waypoint);
 658         action->set_param("time",get_time());
 659         action->set_param("value_node",value_node);
 660
 661         if(!get_instance()->perform_action(action))
 662                 get_ui_interface()->error(_("Action Failed."));
 663 }
 664
 665 void
 666 CanvasInterface::waypoint_remove(synfigapp::ValueDesc value_desc,synfig::Waypoint waypoint)
 667 {
 668         ValueNode::Handle value_node();
 669         waypoint_remove(value_desc.get_value_node(), waypoint);
 670 }
 671
 672 void
 673 CanvasInterface::waypoint_remove(ValueNode::Handle value_node,synfig::Waypoint waypoint)
 674 {
 675         Action::Handle  action(Action::create("waypoint_remove"));
 676
 677         assert(action);
 678         if(!action)
 679                 return;
 680
 681         action->set_param("canvas",get_canvas());
 682         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 683         action->set_param("waypoint",waypoint);
 684         action->set_param("value_node",value_node);
 685
 686         if(!get_instance()->perform_action(action))
 687                 get_ui_interface()->error(_("Action Failed."));
 688 }
 689
 690
 691 void
 692 CanvasInterface::auto_export(synfig::ValueNode::Handle /*value_node*/)
 693 {
 694 /*
 695         // Check to see if we are already exported.
 696         if(value_node->is_exported())
 697                 return;
 698
 699         Action::Handle  action(Action::create("value_node_add"));
 700
 701         assert(action);
 702         if(!action)
 703                 return;
 704
 705         String name(strprintf(_("Unnamed%08d"),synfig::UniqueID().get_uid()));
 706
 707         action->set_param("canvas",get_canvas());
 708         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 709         action->set_param("new",value_node);
 710         action->set_param("name",name);
 711
 712         if(!get_instance()->perform_action(action))
 713                 get_ui_interface()->error(_("Action Failed."));
 714 */
 715 }
 716
 717 void
 718 CanvasInterface::auto_export(const ValueDesc& /*value_desc*/)
 719 {
 720         // THIS FUNCTION IS DEPRECATED, AND IS NOW A STUB.
 721 #if 0
 722         // Check to see if we are already exported.
 723         if(value_desc.is_exported())
 724                 return;
 725
 726         Action::Handle  action(Action::create("value_desc_export"));
 727
 728         assert(action);
 729         if(!action)
 730                 return;
 731
 732         String name(strprintf(_("Unnamed%08d"),synfig::UniqueID().get_uid()));
 733
 734         action->set_param("canvas",get_canvas());
 735         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 736         action->set_param("value_desc",value_desc);
 737         action->set_param("name",name);
 738
 739         if(!get_instance()->perform_action(action))
 740                 get_ui_interface()->error(_("Action Failed."));
 741 #endif
 742 }
 743
 744 bool
 745 CanvasInterface::change_value(synfigapp::ValueDesc value_desc,synfig::ValueBase new_value)
 746 {
 747         // If this isn't really a change, then don't bother
 748         if(new_value==value_desc.get_value(get_time()))
 749                 return true;
 750
 751         // If this change needs to take place elsewhere, then so be it.
 752         if(value_desc.get_canvas() && value_desc.get_canvas()->get_root()!=get_canvas()->get_root())do
 753         {
 754                 etl::handle<Instance> instance;
 755                 instance=find_instance(value_desc.get_canvas()->get_root());
 756
 757                 if(instance)
 758                         return instance->find_canvas_interface(value_desc.get_canvas())->change_value(value_desc,new_value);
 759                 else
 760                 {
 761                         get_ui_interface()->error(_("The value you are trying to edit is in a composition\nwhich doesn't seem to be open. Open that composition and you\nshould be able to edit this value as normal."));
 762                         return false;
 763                 }
 764         }while(0);
 765 #ifdef _DEBUG
 766         else
 767         { synfig::warning("Can't get canvas from value desc...?"); }
 768 #endif
 769
 770         synfigapp::Action::Handle action(synfigapp::Action::create("value_desc_set"));
 771         if(!action)
 772         {
 773                 return false;
 774         }
 775
 776         action->set_param("canvas",get_canvas());
 777         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 778         action->set_param("time",get_time());
 779         action->set_param("value_desc",value_desc);
 780         action->set_param("new_value",new_value);
 781
 782         return get_instance()->perform_action(action);
 783 }
 784
 785 void
 786 CanvasInterface::set_meta_data(const synfig::String& key,const synfig::String& data)
 787 {
 788         get_canvas()->set_meta_data(key,data);
 789 }
 790
 791
 792 // this function goes with find_important_value_descs()
 793 static int
 794 _process_value_desc(const synfigapp::ValueDesc& value_desc,std::vector<synfigapp::ValueDesc>& out, synfig::GUIDSet& guid_set)
 795 {
 796         int ret(0);
 797
 798         if(value_desc.get_value_type()==ValueBase::TYPE_CANVAS)
 799         {
 800                 Canvas::Handle canvas;
 801                 canvas=value_desc.get_value().get(canvas);
 802                 if(!canvas || !canvas->is_inline())
 803                         return ret;
 804                 ret+=CanvasInterface::find_important_value_descs(canvas,out,guid_set);
 805         }
 806
 807         if(value_desc.is_value_node())
 808         {
 809                 ValueNode::Handle value_node(value_desc.get_value_node());
 810
 811                 if(guid_set.count(value_node->get_guid()))
 812                         return ret;
 813                 guid_set.insert(value_node->get_guid());
 814
 815                 if(LinkableValueNode::Handle::cast_dynamic(value_node))
 816                 {
 817                         if(ValueNode_DynamicList::Handle::cast_dynamic(value_node))
 818                         {
 819                                 out.push_back(value_desc);
 820                                 ret++;
 821                         }
 822                         // Process the linkable ValueNode's children
 823                         LinkableValueNode::Handle value_node_copy(LinkableValueNode::Handle::cast_dynamic(value_node));
 824                         int i;
 825                         for(i=0;i<value_node_copy->link_count();i++)
 826                         {
 827                                 ValueNode::Handle link(value_node_copy->get_link(i));
 828                                 if(!link->is_exported())
 829                                         ret+=_process_value_desc(ValueDesc(value_node_copy,i),out,guid_set);
 830                         }
 831                 }
 832                 else if(ValueNode_Animated::Handle::cast_dynamic(value_node))
 833                 {
 834                         out.push_back(value_desc);
 835                         ret++;
 836                 }
 837         }
 838
 839         return ret;
 840 }
 841
 842 int
 843 CanvasInterface::find_important_value_descs(synfig::Canvas::Handle canvas,std::vector<synfigapp::ValueDesc>& out,synfig::GUIDSet& guid_set)
 844 {
 845         int ret(0);
 846         if(!canvas->is_inline())
 847         {
 848                 ValueNodeList::const_iterator iter;
 849
 850                 for(
 851                         iter=canvas->value_node_list().begin();
 852                         iter!=canvas->value_node_list().end();
 853                         ++iter)
 854                         ret+=_process_value_desc(ValueDesc(canvas,(*iter)->get_id()),out,guid_set);
 855         }
 856
 857         Canvas::const_iterator iter;
 858
 859         for(iter=canvas->begin();iter!=canvas->end();++iter)
 860         {
 861                 Layer::Handle layer(*iter);
 862
 863                 Layer::DynamicParamList::const_iterator iter;
 864                 for(
 865                         iter=layer->dynamic_param_list().begin();
 866                         iter!=layer->dynamic_param_list().end();
 867                         ++iter)
 868                 {
 869                         if(!iter->second->is_exported())
 870                                 ret+=_process_value_desc(ValueDesc(layer,iter->first),out,guid_set);
 871                 }
 872                 ValueBase value(layer->get_param("canvas"));
 873                 if(value.is_valid())
 874                         ret+=_process_value_desc(ValueDesc(layer,"canvas"),out,guid_set);
 875         }
 876
 877         return ret;
 878 }
 879
 880 int
 881 CanvasInterface::find_important_value_descs(std::vector<synfigapp::ValueDesc>& out)
 882 {
 883         synfig::GUIDSet tmp;
 884         return find_important_value_descs(get_canvas(),out,tmp);
 885 }
 886
 887 void
 888 CanvasInterface::seek_frame(int frames)
 889 {
 890         if(!frames)
 891                 return;
 892         float fps(get_canvas()->rend_desc().get_frame_rate());
 893         Time newtime(get_time()+(float)frames/fps);
 894         newtime=newtime.round(fps);
 895
 896         if(newtime<=get_canvas()->rend_desc().get_time_start())
 897                 newtime=get_canvas()->rend_desc().get_time_start();
 898         if(newtime>=get_canvas()->rend_desc().get_time_end())
 899                 newtime=get_canvas()->rend_desc().get_time_end();
 900         set_time(newtime);
 901 }
 902
 903 void
 904 CanvasInterface::seek_time(synfig::Time time)
 905 {
 906         if(!time)
 907                 return;
 908
 909         float fps(get_canvas()->rend_desc().get_frame_rate());
 910
 911         if(time>=synfig::Time::end())
 912         {
 913                 set_time(get_canvas()->rend_desc().get_time_end());
 914                 return;
 915         }
 916         if(time<=synfig::Time::begin())
 917         {
 918                 set_time(get_canvas()->rend_desc().get_time_start());
 919                 return;
 920         }
 921
 922         Time newtime(get_time()+time);
 923         newtime=newtime.round(fps);
 924
 925         if(newtime<=get_canvas()->rend_desc().get_time_start())
 926                 newtime=get_canvas()->rend_desc().get_time_start();
 927         if(newtime>=get_canvas()->rend_desc().get_time_end())
 928                 newtime=get_canvas()->rend_desc().get_time_end();
 929         set_time(newtime);
 930 }