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 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         synfig::info("synfigapp::CanvasInterface::~CanvasInterface(): Deleted");
  95 }
  96
  97 void
  98 CanvasInterface::set_time(synfig::Time x)
  99 {
 100         if(get_canvas()->rend_desc().get_frame_rate())
 101         {
 102                 float fps(get_canvas()->rend_desc().get_frame_rate());
 103                 Time r(x.round(fps));
 104                 //synfig::info("CanvasInterface::set_time(): %s rounded to %s\n",x.get_string(fps).c_str(),r.get_string(fps).c_str());
 105                 x=r;
 106         }
 107         if(cur_time_.is_equal(x))
 108                 return;
 109         get_canvas()->set_time(cur_time_=x);
 110
 111         // update the time in all the child canvases
 112         Canvas::Children children = get_canvas()->get_root()->children();
 113         handle<CanvasInterface> interface;
 114         for (Canvas::Children::iterator iter = children.begin(); iter != children.end(); iter++)
 115                 if ((interface = get_instance()->find_canvas_interface(*iter)) != this)
 116                         interface->set_time(interface->get_canvas()->get_time());
 117
 118         signal_time_changed()();
 119         signal_dirty_preview()();
 120 }
 121
 122 synfig::Time
 123 CanvasInterface::get_time()const
 124 {
 125         return cur_time_;
 126 }
 127
 128 void
 129 CanvasInterface::refresh_current_values()
 130 {
 131         get_canvas()->set_time(cur_time_);
 132         signal_time_changed()();
 133         signal_dirty_preview()();
 134 }
 135
 136 etl::handle<CanvasInterface>
 137 CanvasInterface::create(etl::loose_handle<Instance> instance, etl::handle<synfig::Canvas> canvas)
 138 {
 139         etl::handle<CanvasInterface> intrfc;
 140         intrfc=new CanvasInterface(instance,canvas);
 141         instance->canvas_interface_list().push_front(intrfc);
 142         return intrfc;
 143 }
 144
 145 void
 146 CanvasInterface::set_mode(Mode x)
 147 {
 148         Action::Handle  action(Action::EditModeSet::create());
 149
 150         assert(action);
 151
 152         action->set_param("canvas",get_canvas());
 153         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 154         action->set_param("edit_mode",x);
 155
 156         if(!action->is_ready())
 157         {
 158                 get_ui_interface()->error(_("Action Not Ready, unable to change mode"));
 159                 assert(0);
 160                 return;
 161         }
 162
 163         if(!get_instance()->perform_action(action))
 164                 get_ui_interface()->error(_("Unable to change mode"));
 165
 166 //      mode_=x;
 167 //      signal_mode_changed_(x);
 168 }
 169
 170 CanvasInterface::Mode
 171 CanvasInterface::get_mode()const
 172 {
 173         return mode_;
 174 }
 175
 176
 177
 178 Layer::Handle
 179 CanvasInterface::add_layer_to(synfig::String name, synfig::Canvas::Handle canvas, int depth)
 180 {
 181         synfigapp::Action::PassiveGrouper group(get_instance().get(),_("Add Layer To"));
 182
 183         Layer::Handle   layer(Layer::create(name));
 184
 185         assert(layer);
 186
 187         if(!layer)
 188                 return 0;
 189
 190         if(canvas!=get_canvas() && !canvas->is_inline())
 191         {
 192                 synfig::error("Bad canvas passed to \"add_layer_to\"");
 193                 return 0;
 194         }
 195
 196         layer->set_canvas(canvas);
 197
 198         // Apply some defaults
 199         if(layer->set_param("fg",synfigapp::Main::get_foreground_color()))
 200                 layer->set_param("bg",synfigapp::Main::get_background_color());
 201         else
 202                 layer->set_param("color",synfigapp::Main::get_foreground_color());
 203
 204         layer->set_param("width",synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc()));
 205         layer->set_param("gradient",synfigapp::Main::get_gradient());
 206         if(name!="zoom")
 207                 layer->set_param("amount",synfigapp::Main::get_opacity());
 208         layer->set_param("blend_method",synfigapp::Main::get_blend_method());
 209
 210         {
 211                 // Grab the layer's list of parameters
 212                 Layer::ParamList paramlist=layer->get_param_list();
 213                 Layer::ParamList::iterator iter;
 214                 for(iter=paramlist.begin();iter!=paramlist.end();++iter)
 215                 {
 216                         ValueNode::Handle value_node;
 217
 218                         if(iter->second.get_type()==ValueBase::TYPE_LIST)
 219                                 value_node=LinkableValueNode::create("dynamic_list",iter->second);
 220                         else if(LinkableValueNode::check_type("composite",iter->second.get_type()) &&
 221                                 (iter->second.get_type()!=ValueBase::TYPE_COLOR && iter->second.get_type()!=ValueBase::TYPE_VECTOR)
 222                         )
 223                                 value_node=LinkableValueNode::create("composite",iter->second);
 224
 225                         if(value_node)
 226                                 layer->connect_dynamic_param(iter->first,value_node);
 227                 }
 228         }
 229
 230         // Action to add the layer
 231         Action::Handle  action(Action::LayerAdd::create());
 232
 233         assert(action);
 234         if(!action)
 235                 return 0;
 236
 237         action->set_param("canvas",canvas);
 238         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 239         action->set_param("new",layer);
 240
 241         if(!action->is_ready())
 242         {
 243                 get_ui_interface()->error(_("Action Not Ready"));
 244                 return 0;
 245         }
 246
 247         if(!get_instance()->perform_action(action))
 248         {
 249                 get_ui_interface()->error(_("Action Failed."));
 250                 return 0;
 251         }
 252
 253         synfig::info("DEPTH=%d",depth);
 254         // Action to move the layer (if necessary)
 255         if(depth>0)
 256         {
 257                 Action::Handle  action(Action::create("layer_move"));
 258
 259                 assert(action);
 260                 if(!action)
 261                         return 0;
 262
 263                 action->set_param("canvas",canvas);
 264                 action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 265                 action->set_param("layer",layer);
 266                 action->set_param("new_index",depth);
 267
 268                 if(!action->is_ready())
 269                 {
 270                         get_ui_interface()->error(_("Move Action Not Ready"));
 271                         return 0;
 272                 }
 273
 274                 if(!get_instance()->perform_action(action))
 275                 {
 276                         get_ui_interface()->error(_("Move Action Failed."));
 277                         return 0;
 278                 }
 279         }
 280
 281
 282         return layer;
 283 }
 284
 285
 286 bool
 287 CanvasInterface::convert(ValueDesc value_desc, synfig::String type)
 288 {
 289         Action::Handle  action(Action::ValueDescConvert::create());
 290
 291         assert(action);
 292         if(!action)
 293                 return 0;
 294
 295         action->set_param("canvas",get_canvas());
 296         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 297         action->set_param("value_desc",value_desc);
 298         action->set_param("type",type);
 299         action->set_param("time",get_time());
 300
 301         if(!action->is_ready())
 302         {
 303                 get_ui_interface()->error(_("Action Not Ready"));
 304                 return 0;
 305         }
 306
 307         if(get_instance()->perform_action(action))
 308                 return true;
 309
 310         get_ui_interface()->error(_("Action Failed."));
 311         return false;
 312 }
 313
 314 bool
 315 CanvasInterface::add_value_node(synfig::ValueNode::Handle value_node, synfig::String name)
 316 {
 317         if(name.empty())
 318         {
 319                 get_ui_interface()->error(_("Empty name!"));
 320                 return false;
 321         }
 322
 323         Action::Handle  action(Action::ValueNodeAdd::create());
 324
 325         assert(action);
 326         if(!action)
 327                 return 0;
 328
 329         action->set_param("canvas",get_canvas());
 330         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 331         action->set_param("new",value_node);
 332         action->set_param("name",name);
 333
 334         if(!action->is_ready())
 335         {
 336                 get_ui_interface()->error(_("Action Not Ready"));
 337                 return 0;
 338         }
 339
 340         if(get_instance()->perform_action(action))
 341                 return true;
 342
 343         get_ui_interface()->error(_("Action Failed."));
 344         return false;
 345 }
 346
 347 Action::ParamList
 348 CanvasInterface::generate_param_list(const ValueDesc &value_desc)
 349 {
 350         synfigapp::Action::ParamList param_list;
 351         param_list.add("time",get_time());
 352         param_list.add("canvas_interface",etl::handle<CanvasInterface>(this));
 353         param_list.add("canvas",get_canvas());
 354
 355         param_list.add("value_desc",value_desc);
 356
 357         if(value_desc.parent_is_value_node())
 358                 param_list.add("parent_value_node",value_desc.get_parent_value_node());
 359
 360         if(value_desc.is_value_node())
 361                 param_list.add("value_node",value_desc.get_value_node());
 362
 363         if(value_desc.is_const())
 364                 param_list.add("value",value_desc.get_value());
 365
 366         if(value_desc.parent_is_layer_param())
 367         {
 368                 param_list.add("parent_layer",value_desc.get_layer());
 369                 param_list.add("parent_layer_param",value_desc.get_param_name());
 370         }
 371
 372         {
 373                 synfigapp::SelectionManager::ChildrenList children_list;
 374                 children_list=get_selection_manager()->get_selected_children();
 375                 if(!value_desc.parent_is_canvas() && children_list.size()==1)
 376                 {
 377                         param_list.add("dest",value_desc);
 378                         param_list.add("src",children_list.front().get_value_node());
 379                 }
 380         }
 381         return param_list;
 382 }
 383
 384 Action::ParamList
 385 CanvasInterface::generate_param_list(const std::list<synfigapp::ValueDesc> &value_desc_list)
 386 {
 387         synfigapp::Action::ParamList param_list;
 388         param_list.add("time",get_time());
 389         param_list.add("canvas_interface",etl::handle<CanvasInterface>(this));
 390         param_list.add("canvas",get_canvas());
 391
 392         std::list<synfigapp::ValueDesc>::const_iterator iter;
 393         for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)
 394         {
 395                 param_list.add("value_desc",*iter);
 396                 if(iter->is_value_node())
 397                 {
 398                         param_list.add("value_node",iter->get_value_node());
 399                 }
 400         }
 401
 402
 403         return param_list;
 404 }
 405
 406 void
 407 CanvasInterface::set_rend_desc(const synfig::RendDesc &rend_desc)
 408 {
 409         Action::Handle  action(Action::create("canvas_rend_desc_set"));
 410
 411         assert(action);
 412         if(!action)
 413                 return;
 414
 415         action->set_param("canvas",get_canvas());
 416         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 417         action->set_param("rend_desc",rend_desc);
 418
 419         if(!get_instance()->perform_action(action))
 420                 get_ui_interface()->error(_("Action Failed."));
 421 }
 422
 423 bool
 424 CanvasInterface::set_name(const synfig::String &x)
 425 {
 426         //! \todo This needs to be converted into an action
 427         get_canvas()->set_name(x);
 428         signal_id_changed_();
 429         return true;
 430 }
 431
 432 bool
 433 CanvasInterface::set_description(const synfig::String &x)
 434 {
 435         //! \todo This needs to be converted into an action
 436         get_canvas()->set_description(x);
 437         return true;
 438 }
 439
 440 bool
 441 CanvasInterface::set_id(const synfig::String &x)
 442 {
 443         //! \todo This needs to be converted into an action
 444         get_canvas()->set_id(x);
 445         signal_id_changed_();
 446         return true;
 447 }
 448
 449
 450 void
 451 CanvasInterface::jump_to_next_keyframe()
 452 {
 453         synfig::info("Current time: %s",get_time().get_string().c_str());
 454         try
 455         {
 456                 synfig::Keyframe keyframe(*get_canvas()->keyframe_list().find_next(get_time()));
 457                 synfig::info("Jumping to keyframe \"%s\" at %s",keyframe.get_description().c_str(),keyframe.get_time().get_string().c_str());
 458                 set_time(keyframe.get_time());
 459         }
 460         catch(...) { synfig::warning("Unable to find next keyframe"); }
 461 }
 462
 463 void
 464 CanvasInterface::jump_to_prev_keyframe()
 465 {
 466         synfig::info("Current time: %s",get_time().get_string().c_str());
 467         try
 468         {
 469                 synfig::Keyframe keyframe(*get_canvas()->keyframe_list().find_prev(get_time()));
 470                 synfig::info("Jumping to keyframe \"%s\" at %s",keyframe.get_description().c_str(),keyframe.get_time().get_string().c_str());
 471                 set_time(keyframe.get_time());
 472         }
 473         catch(...) { synfig::warning("Unable to find prev keyframe"); }
 474 }
 475
 476 bool
 477 CanvasInterface::import(const synfig::String &filename, bool /*copy*/)
 478 {
 479         Action::PassiveGrouper group(get_instance().get(),_("Import Image"));
 480
 481         synfig::info("Attempting to import "+filename);
 482
 483         if (filename_extension(filename) == "")
 484         {
 485                 get_ui_interface()->error(_("Filename must have an extension!"));
 486                 return false;
 487         }
 488
 489         String ext(filename_extension(filename));
 490         if (ext.size()) ext = ext.substr(1); // skip initial '.'
 491         std::transform(ext.begin(),ext.end(),ext.begin(),&::tolower);
 492
 493         // If this is a SIF file, then we need to do things slightly differently
 494         if(ext=="sif" || ext=="sifz")try
 495         {
 496
 497                 Canvas::Handle outside_canvas(synfig::open_canvas(filename));
 498                 if(!outside_canvas)
 499                         throw String(_("Unable to open this composition"));
 500
 501                 Layer::Handle layer(add_layer_to("PasteCanvas",get_canvas()));
 502                 if(!layer)
 503                         throw String(_("Unable to create \"Paste Canvas\" layer"));
 504                 if(!layer->set_param("canvas",ValueBase(outside_canvas)))
 505                         throw int();
 506
 507                 //layer->set_description(basename(filename));
 508                 signal_layer_new_description()(layer,filename);
 509                 return true;
 510         }
 511         catch(String x)
 512         {
 513                 get_ui_interface()->error(x+" -- "+filename);
 514                 return false;
 515         }
 516         catch(...)
 517         {
 518                 get_ui_interface()->error(_("Uncaught exception when attempting\nto open this composition -- ")+filename);
 519                 return false;
 520         }
 521
 522         if(!Importer::book().count(ext))
 523         {
 524                 get_ui_interface()->error(_("I don't know how to open images of this type -- ")+ext);
 525                 return false;
 526         }
 527
 528         try
 529         {
 530                 Layer::Handle layer(add_layer_to("Import",get_canvas()));
 531                 int w,h;
 532                 if(!layer)
 533                         throw int();
 534                 if(!layer->set_param("filename",ValueBase(filename)))
 535                         throw int();
 536                 w=layer->get_param("_width").get(int());
 537                 h=layer->get_param("_height").get(int());
 538                 if(w&&h)
 539                 {
 540                         Vector size=ValueBase(get_canvas()->rend_desc().get_br()-get_canvas()->rend_desc().get_tl());
 541                         Vector x;
 542                         if(size[0]<size[1])
 543                         {
 544                                 x[0]=size[0];
 545                                 x[1]=size[0]/w*h;
 546                                 if(size[0]<0 ^ size[1]<0)
 547                                         x[1]=-x[1];
 548                         }
 549                         else
 550                         {
 551                                 x[1]=size[1];
 552                                 x[0]=size[1]/h*w;
 553                                 if(size[0]<0 ^ size[1]<0)
 554                                         x[0]=-x[0];
 555                         }
 556                         if(!layer->set_param("tl",ValueBase(-x/2)))
 557                                 throw int();
 558                         if(!layer->set_param("br",ValueBase(x/2)))
 559                                 throw int();
 560                 }
 561                 else
 562                 {
 563                         if(!layer->set_param("tl",ValueBase(get_canvas()->rend_desc().get_tl())))
 564                                 throw int();
 565                         if(!layer->set_param("br",ValueBase(get_canvas()->rend_desc().get_br())))
 566                                 throw int();
 567                 }
 568
 569                 layer->set_description(basename(filename));
 570                 signal_layer_new_description()(layer,filename);
 571
 572                 return true;
 573         }
 574         catch(...)
 575         {
 576                 get_ui_interface()->error("Unable to import "+filename);
 577                 group.cancel();
 578                 return false;
 579         }
 580 }
 581
 582
 583 void
 584 CanvasInterface::waypoint_duplicate(synfigapp::ValueDesc value_desc,synfig::Waypoint waypoint)
 585 {
 586         Action::Handle  action(Action::create("waypoint_set_smart"));
 587
 588         assert(action);
 589         if(!action)
 590                 return;
 591
 592         waypoint.make_unique();
 593         waypoint.set_time(get_time());
 594
 595         ValueNode::Handle value_node(value_desc.get_value_node());
 596
 597         action->set_param("canvas",get_canvas());
 598         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 599         action->set_param("waypoint",waypoint);
 600         action->set_param("time",get_time());
 601         action->set_param("value_node",value_node);
 602
 603         if(!get_instance()->perform_action(action))
 604                 get_ui_interface()->error(_("Action Failed."));
 605 }
 606
 607 void
 608 CanvasInterface::waypoint_remove(synfigapp::ValueDesc value_desc,synfig::Waypoint waypoint)
 609 {
 610         Action::Handle  action(Action::create("waypoint_remove"));
 611
 612         assert(action);
 613         if(!action)
 614                 return;
 615
 616         ValueNode::Handle value_node(value_desc.get_value_node());
 617
 618         action->set_param("canvas",get_canvas());
 619         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 620         action->set_param("waypoint",waypoint);
 621         action->set_param("value_node",value_node);
 622
 623         if(!get_instance()->perform_action(action))
 624                 get_ui_interface()->error(_("Action Failed."));
 625 }
 626
 627
 628 void
 629 CanvasInterface::auto_export(synfig::ValueNode::Handle /*value_node*/)
 630 {
 631 /*
 632         // Check to see if we are already exported.
 633         if(value_node->is_exported())
 634                 return;
 635
 636         Action::Handle  action(Action::create("value_node_add"));
 637
 638         assert(action);
 639         if(!action)
 640                 return;
 641
 642         String name(strprintf(_("Unnamed%08d"),synfig::UniqueID().get_uid()));
 643
 644         action->set_param("canvas",get_canvas());
 645         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 646         action->set_param("new",value_node);
 647         action->set_param("name",name);
 648
 649         if(!get_instance()->perform_action(action))
 650                 get_ui_interface()->error(_("Action Failed."));
 651 */
 652 }
 653
 654 void
 655 CanvasInterface::auto_export(const ValueDesc& /*value_desc*/)
 656 {
 657         // THIS FUNCTION IS DEPRECATED, AND IS NOW A STUB.
 658 #if 0
 659         // Check to see if we are already exported.
 660         if(value_desc.is_exported())
 661                 return;
 662
 663         Action::Handle  action(Action::create("value_desc_export"));
 664
 665         assert(action);
 666         if(!action)
 667                 return;
 668
 669         String name(strprintf(_("Unnamed%08d"),synfig::UniqueID().get_uid()));
 670
 671         action->set_param("canvas",get_canvas());
 672         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 673         action->set_param("value_desc",value_desc);
 674         action->set_param("name",name);
 675
 676         if(!get_instance()->perform_action(action))
 677                 get_ui_interface()->error(_("Action Failed."));
 678 #endif
 679 }
 680
 681 bool
 682 CanvasInterface::change_value(synfigapp::ValueDesc value_desc,synfig::ValueBase new_value)
 683 {
 684         // If this isn't really a change, then don't bother
 685         if(new_value==value_desc.get_value(get_time()))
 686                 return true;
 687
 688         // If this change needs to take place elsewhere, then so be it.
 689         if(value_desc.get_canvas() && value_desc.get_canvas()->get_root()!=get_canvas()->get_root())do
 690         {
 691                 etl::handle<Instance> instance;
 692                 instance=find_instance(value_desc.get_canvas()->get_root());
 693
 694                 if(instance)
 695                         return instance->find_canvas_interface(value_desc.get_canvas())->change_value(value_desc,new_value);
 696                 else
 697                 {
 698                         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."));
 699                         return false;
 700                 }
 701         }while(0);
 702 #ifdef _DEBUG
 703         else
 704         { synfig::warning("Can't get canvas from value desc...?"); }
 705 #endif
 706
 707         synfigapp::Action::Handle action(synfigapp::Action::create("value_desc_set"));
 708         if(!action)
 709         {
 710                 return false;
 711         }
 712
 713         action->set_param("canvas",get_canvas());
 714         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 715         action->set_param("time",get_time());
 716         action->set_param("value_desc",value_desc);
 717         action->set_param("new_value",new_value);
 718
 719         return get_instance()->perform_action(action);
 720 }
 721
 722 void
 723 CanvasInterface::set_meta_data(const synfig::String& key,const synfig::String& data)
 724 {
 725         get_canvas()->set_meta_data(key,data);
 726 }
 727
 728
 729 // this function goes with find_important_value_descs()
 730 static int
 731 _process_value_desc(const synfigapp::ValueDesc& value_desc,std::vector<synfigapp::ValueDesc>& out, synfig::GUIDSet& guid_set)
 732 {
 733         int ret(0);
 734
 735         if(value_desc.get_value_type()==ValueBase::TYPE_CANVAS)
 736         {
 737                 Canvas::Handle canvas;
 738                 canvas=value_desc.get_value().get(canvas);
 739                 if(!canvas || !canvas->is_inline())
 740                         return ret;
 741                 ret+=CanvasInterface::find_important_value_descs(canvas,out,guid_set);
 742         }
 743
 744         if(value_desc.is_value_node())
 745         {
 746                 ValueNode::Handle value_node(value_desc.get_value_node());
 747
 748                 if(guid_set.count(value_node->get_guid()))
 749                         return ret;
 750                 guid_set.insert(value_node->get_guid());
 751
 752                 if(LinkableValueNode::Handle::cast_dynamic(value_node))
 753                 {
 754                         if(ValueNode_DynamicList::Handle::cast_dynamic(value_node))
 755                         {
 756                                 out.push_back(value_desc);
 757                                 ret++;
 758                         }
 759                         // Process the linkable ValueNode's children
 760                         LinkableValueNode::Handle value_node_copy(LinkableValueNode::Handle::cast_dynamic(value_node));
 761                         int i;
 762                         for(i=0;i<value_node_copy->link_count();i++)
 763                         {
 764                                 ValueNode::Handle link(value_node_copy->get_link(i));
 765                                 if(!link->is_exported())
 766                                         ret+=_process_value_desc(ValueDesc(value_node_copy,i),out,guid_set);
 767                         }
 768                 }
 769                 else if(ValueNode_Animated::Handle::cast_dynamic(value_node))
 770                 {
 771                         out.push_back(value_desc);
 772                         ret++;
 773                 }
 774         }
 775
 776         return ret;
 777 }
 778
 779 int
 780 CanvasInterface::find_important_value_descs(synfig::Canvas::Handle canvas,std::vector<synfigapp::ValueDesc>& out,synfig::GUIDSet& guid_set)
 781 {
 782         int ret(0);
 783         if(!canvas->is_inline())
 784         {
 785                 ValueNodeList::const_iterator iter;
 786
 787                 for(
 788                         iter=canvas->value_node_list().begin();
 789                         iter!=canvas->value_node_list().end();
 790                         ++iter)
 791                         ret+=_process_value_desc(ValueDesc(canvas,(*iter)->get_id()),out,guid_set);
 792         }
 793
 794         Canvas::const_iterator iter;
 795
 796         for(iter=canvas->begin();iter!=canvas->end();++iter)
 797         {
 798                 Layer::Handle layer(*iter);
 799
 800                 Layer::DynamicParamList::const_iterator iter;
 801                 for(
 802                         iter=layer->dynamic_param_list().begin();
 803                         iter!=layer->dynamic_param_list().end();
 804                         ++iter)
 805                 {
 806                         if(!iter->second->is_exported())
 807                                 ret+=_process_value_desc(ValueDesc(layer,iter->first),out,guid_set);
 808                 }
 809                 ValueBase value(layer->get_param("canvas"));
 810                 if(value.is_valid())
 811                         ret+=_process_value_desc(ValueDesc(layer,"canvas"),out,guid_set);
 812         }
 813
 814         return ret;
 815 }
 816
 817 int
 818 CanvasInterface::find_important_value_descs(std::vector<synfigapp::ValueDesc>& out)
 819 {
 820         synfig::GUIDSet tmp;
 821         return find_important_value_descs(get_canvas(),out,tmp);
 822 }
 823
 824 void
 825 CanvasInterface::seek_frame(int frames)
 826 {
 827         if(!frames)
 828                 return;
 829         float fps(get_canvas()->rend_desc().get_frame_rate());
 830         Time newtime(get_time()+(float)frames/fps);
 831         newtime=newtime.round(fps);
 832
 833         if(newtime<=get_canvas()->rend_desc().get_time_start())
 834                 newtime=get_canvas()->rend_desc().get_time_start();
 835         if(newtime>=get_canvas()->rend_desc().get_time_end())
 836                 newtime=get_canvas()->rend_desc().get_time_end();
 837         set_time(newtime);
 838 }
 839
 840 void
 841 CanvasInterface::seek_time(synfig::Time time)
 842 {
 843         if(!time)
 844                 return;
 845
 846         float fps(get_canvas()->rend_desc().get_frame_rate());
 847
 848         if(time>=synfig::Time::end())
 849         {
 850                 set_time(get_canvas()->rend_desc().get_time_end());
 851                 return;
 852         }
 853         if(time<=synfig::Time::begin())
 854         {
 855                 set_time(get_canvas()->rend_desc().get_time_start());
 856                 return;
 857         }
 858
 859         Time newtime(get_time()+time);
 860         newtime=newtime.round(fps);
 861
 862         if(newtime<=get_canvas()->rend_desc().get_time_start())
 863                 newtime=get_canvas()->rend_desc().get_time_start();
 864         if(newtime>=get_canvas()->rend_desc().get_time_end())
 865                 newtime=get_canvas()->rend_desc().get_time_end();
 866         set_time(newtime);
 867 }