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 #include <synfig/valuenode_bline.h>
  45
  46 #include <synfig/waypoint.h>
  47 #include <synfig/loadcanvas.h>
  48 #include <synfig/importer.h>
  49 #include <synfig/guidset.h>
  50
  51 #include "canvasinterface.h"
  52 #include "instance.h"
  53
  54 #include "actions/layeradd.h"
  55 #include "actions/valuedescconvert.h"
  56 #include "actions/valuenodeadd.h"
  57 #include "actions/editmodeset.h"
  58 #include "action_system.h"
  59
  60 #include "main.h"
  61
  62 #include <synfig/gradient.h>
  63
  64 #include "general.h"
  65
  66 #endif
  67
  68 /* === U S I N G =========================================================== */
  69
  70 using namespace std;
  71 using namespace etl;
  72 using namespace synfig;
  73 using namespace synfigapp;
  74
  75 /* === M A C R O S ========================================================= */
  76
  77 /* === G L O B A L S ======================================================= */
  78
  79 /* === P R O C E D U R E S ================================================= */
  80
  81 /* === M E T H O D S ======================================================= */
  82
  83 CanvasInterface::CanvasInterface(etl::loose_handle<Instance> instance,etl::handle<synfig::Canvas> canvas):
  84         instance_(instance),
  85         canvas_(canvas),
  86         cur_time_(canvas->rend_desc().get_frame_start()),
  87         mode_(MODE_NORMAL|MODE_ANIMATE_PAST|MODE_ANIMATE_FUTURE)
  88 {
  89         set_selection_manager(get_instance()->get_selection_manager());
  90         set_ui_interface(get_instance()->get_ui_interface());
  91 }
  92
  93 CanvasInterface::~CanvasInterface()
  94 {
  95         if (getenv("SYNFIG_DEBUG_DESTRUCTORS"))
  96                 synfig::info("CanvasInterface::~CanvasInterface(): Deleted");
  97 }
  98
  99 void
 100 CanvasInterface::set_time(synfig::Time x)
 101 {
 102         if(get_canvas()->rend_desc().get_frame_rate())
 103         {
 104                 float fps(get_canvas()->rend_desc().get_frame_rate());
 105                 Time r(x.round(fps));
 106                 //synfig::info("CanvasInterface::set_time(): %s rounded to %s\n",x.get_string(fps).c_str(),r.get_string(fps).c_str());
 107                 x=r;
 108         }
 109         if(cur_time_.is_equal(x))
 110                 return;
 111         get_canvas()->set_time(cur_time_=x);
 112
 113         // update the time in all the child canvases
 114         Canvas::Children children = get_canvas()->get_root()->children();
 115         handle<CanvasInterface> interface;
 116         for (Canvas::Children::iterator iter = children.begin(); iter != children.end(); iter++)
 117                 if ((interface = get_instance()->find_canvas_interface(*iter)) != this)
 118                         interface->set_time(interface->get_canvas()->get_time());
 119
 120         signal_time_changed()();
 121         signal_dirty_preview()();
 122 }
 123
 124 synfig::Time
 125 CanvasInterface::get_time()const
 126 {
 127         return cur_time_;
 128 }
 129
 130 void
 131 CanvasInterface::refresh_current_values()
 132 {
 133         get_canvas()->set_time(cur_time_);
 134         signal_time_changed()();
 135         signal_dirty_preview()();
 136 }
 137
 138 etl::handle<CanvasInterface>
 139 CanvasInterface::create(etl::loose_handle<Instance> instance, etl::handle<synfig::Canvas> canvas)
 140 {
 141         etl::handle<CanvasInterface> intrfc;
 142         intrfc=new CanvasInterface(instance,canvas);
 143         instance->canvas_interface_list().push_front(intrfc);
 144         return intrfc;
 145 }
 146
 147 void
 148 CanvasInterface::set_mode(Mode x)
 149 {
 150         Action::Handle  action(Action::EditModeSet::create());
 151
 152         assert(action);
 153
 154         action->set_param("canvas",get_canvas());
 155         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 156         action->set_param("edit_mode",x);
 157
 158         if(!action->is_ready())
 159         {
 160                 get_ui_interface()->error(_("Action Not Ready, unable to change mode"));
 161                 assert(0);
 162                 return;
 163         }
 164
 165         if(!get_instance()->perform_action(action))
 166                 get_ui_interface()->error(_("Unable to change mode"));
 167
 168 //      mode_=x;
 169 //      signal_mode_changed_(x);
 170 }
 171
 172 CanvasInterface::Mode
 173 CanvasInterface::get_mode()const
 174 {
 175         return mode_;
 176 }
 177
 178
 179
 180 Layer::Handle
 181 CanvasInterface::add_layer_to(synfig::String name, synfig::Canvas::Handle canvas, int depth)
 182 {
 183         synfigapp::Action::PassiveGrouper group(get_instance().get(),_("Add Layer To"));
 184
 185         Layer::Handle   layer(Layer::create(name));
 186
 187         assert(layer);
 188
 189         if(!layer)
 190                 return 0;
 191
 192         if(canvas!=get_canvas() && !canvas->is_inline())
 193         {
 194                 synfig::error("Bad canvas passed to \"add_layer_to\"");
 195                 return 0;
 196         }
 197
 198         // automatically export the Index parameter of new Duplicate layers
 199         if (name == "duplicate")
 200                 for (int i = 1; ; i++)
 201                 {
 202                         String name = strprintf(_("Index %d"), i);
 203                         try
 204                         {
 205                                 canvas->find_value_node(name);
 206                         }
 207                         catch (Exception::IDNotFound x)
 208                         {
 209                                 add_value_node(layer->dynamic_param_list().find("index")->second, name);
 210                                 break;
 211                         }
 212                 }
 213
 214         layer->set_canvas(canvas);
 215
 216         // Apply some defaults
 217         if(layer->set_param("fg",synfigapp::Main::get_outline_color()))
 218                 layer->set_param("bg",synfigapp::Main::get_fill_color());
 219         else if (name == "outline")
 220                 layer->set_param("color",synfigapp::Main::get_outline_color());
 221         else
 222                 layer->set_param("color",synfigapp::Main::get_fill_color());
 223
 224         layer->set_param("width",synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc()));
 225         layer->set_param("gradient",synfigapp::Main::get_gradient());
 226         if(name!="zoom")
 227                 layer->set_param("amount",synfigapp::Main::get_opacity());
 228         layer->set_param("blend_method",synfigapp::Main::get_blend_method());
 229
 230         {
 231                 // Grab the layer's list of parameters
 232                 Layer::ParamList paramlist=layer->get_param_list();
 233                 Layer::ParamList::iterator iter;
 234
 235                 // loop through the static parameters
 236                 for(iter=paramlist.begin();iter!=paramlist.end();++iter)
 237                 {
 238                         ValueNode::Handle value_node;
 239
 240                         // if we find any which are list values then make them
 241                         // into dynamic list valuenodes, unless every element of
 242                         // the list is a blinepoint, in which case convert it to a
 243                         // bline
 244                         if(iter->second.get_type()==ValueBase::TYPE_LIST)
 245                         {
 246                                 // check whether it's a list of blinepoints only
 247                                 vector<ValueBase> list(iter->second.get_list());
 248                                 if (list.size())
 249                                 {
 250                                         vector<ValueBase>::iterator iter2;
 251                                         for (iter2 = list.begin(); iter2 != list.end(); iter2++)
 252                                                 if (iter2->get_type() != ValueBase::TYPE_BLINEPOINT)
 253                                                         break;
 254                                         if (iter2 == list.end())
 255                                         {
 256                                                 value_node=LinkableValueNode::create("bline",iter->second);
 257                                                 ValueNode_BLine::Handle::cast_dynamic(value_node)->set_member_canvas(canvas);
 258                                         }
 259                                 }
 260
 261                                 if (!value_node)
 262                                         value_node=LinkableValueNode::create("dynamic_list",iter->second);
 263                         }
 264                         // otherwise, if it's a type that can be converted to
 265                         // 'composite' (other than the types that can be radial
 266                         // composite) then do so
 267                         else if(LinkableValueNode::check_type("composite",iter->second.get_type()) &&
 268                                          (iter->second.get_type()!=ValueBase::TYPE_COLOR &&
 269                                           iter->second.get_type()!=ValueBase::TYPE_VECTOR))
 270                                 value_node=LinkableValueNode::create("composite",iter->second);
 271
 272                         if(value_node)
 273                                 layer->connect_dynamic_param(iter->first,value_node);
 274                 }
 275         }
 276
 277         // Action to add the layer
 278         Action::Handle  action(Action::LayerAdd::create());
 279
 280         assert(action);
 281         if(!action)
 282                 return 0;
 283
 284         action->set_param("canvas",canvas);
 285         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 286         action->set_param("new",layer);
 287
 288         if(!action->is_ready())
 289         {
 290                 get_ui_interface()->error(_("Action Not Ready"));
 291                 return 0;
 292         }
 293
 294         if(!get_instance()->perform_action(action))
 295         {
 296                 get_ui_interface()->error(_("Action Failed."));
 297                 return 0;
 298         }
 299
 300         // synfig::info("DEPTH=%d",depth);
 301
 302         // Action to move the layer (if necessary)
 303         if(depth>0)
 304         {
 305                 Action::Handle  action(Action::create("LayerMove"));
 306
 307                 assert(action);
 308                 if(!action)
 309                         return 0;
 310
 311                 action->set_param("canvas",canvas);
 312                 action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 313                 action->set_param("layer",layer);
 314                 action->set_param("new_index",depth);
 315
 316                 if(!action->is_ready())
 317                 {
 318                         get_ui_interface()->error(_("Move Action Not Ready"));
 319                         return 0;
 320                 }
 321
 322                 if(!get_instance()->perform_action(action))
 323                 {
 324                         get_ui_interface()->error(_("Move Action Failed."));
 325                         return 0;
 326                 }
 327         }
 328
 329
 330         return layer;
 331 }
 332
 333
 334 bool
 335 CanvasInterface::convert(ValueDesc value_desc, synfig::String type)
 336 {
 337         Action::Handle  action(Action::ValueDescConvert::create());
 338
 339         assert(action);
 340         if(!action)
 341                 return 0;
 342
 343         action->set_param("canvas",get_canvas());
 344         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 345         action->set_param("value_desc",value_desc);
 346         action->set_param("type",type);
 347         action->set_param("time",get_time());
 348
 349         if(!action->is_ready())
 350         {
 351                 get_ui_interface()->error(_("Action Not Ready"));
 352                 return 0;
 353         }
 354
 355         if(get_instance()->perform_action(action))
 356                 return true;
 357
 358         get_ui_interface()->error(_("Action Failed."));
 359         return false;
 360 }
 361
 362 bool
 363 CanvasInterface::add_value_node(synfig::ValueNode::Handle value_node, synfig::String name)
 364 {
 365         if(name.empty())
 366         {
 367                 get_ui_interface()->error(_("Empty name!"));
 368                 return false;
 369         }
 370
 371         Action::Handle  action(Action::ValueNodeAdd::create());
 372
 373         assert(action);
 374         if(!action)
 375                 return 0;
 376
 377         action->set_param("canvas",get_canvas());
 378         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 379         action->set_param("new",value_node);
 380         action->set_param("name",name);
 381
 382         if(!action->is_ready())
 383         {
 384                 get_ui_interface()->error(_("Action Not Ready"));
 385                 return 0;
 386         }
 387
 388         if(get_instance()->perform_action(action))
 389                 return true;
 390
 391         get_ui_interface()->error(_("Action Failed."));
 392         return false;
 393 }
 394
 395 Action::ParamList
 396 CanvasInterface::generate_param_list(const ValueDesc &value_desc)
 397 {
 398         synfigapp::Action::ParamList param_list;
 399         param_list.add("time",get_time());
 400         param_list.add("canvas_interface",etl::handle<CanvasInterface>(this));
 401         param_list.add("canvas",get_canvas());
 402
 403         param_list.add("value_desc",value_desc);
 404
 405         if(value_desc.parent_is_value_node())
 406                 param_list.add("parent_value_node",value_desc.get_parent_value_node());
 407
 408         if(value_desc.is_value_node())
 409                 param_list.add("value_node",value_desc.get_value_node());
 410
 411         if(value_desc.is_const())
 412         {
 413                 // Fix 1868911: if we put a ValueBase holding a Canvas handle
 414                 // into the param_list and then export the canvas, the handle
 415                 // will miss out of having its reference count reduced,
 416                 // because by the time the handle is destructed the canvas
 417                 // will no longer be inline.  So let's not propogate that
 418                 // ValueBase any further than here.
 419                 if (value_desc.get_value_type() == ValueBase::TYPE_CANVAS)
 420                         param_list.add("value",Canvas::LooseHandle(value_desc.get_value().get(Canvas::LooseHandle())));
 421                 else
 422                         param_list.add("value",value_desc.get_value());
 423         }
 424
 425         if(value_desc.parent_is_layer_param())
 426         {
 427                 param_list.add("parent_layer",value_desc.get_layer());
 428                 param_list.add("parent_layer_param",value_desc.get_param_name());
 429         }
 430
 431         {
 432                 synfigapp::SelectionManager::ChildrenList children_list;
 433                 children_list=get_selection_manager()->get_selected_children();
 434                 if(!value_desc.parent_is_canvas() && children_list.size()==1)
 435                 {
 436                         param_list.add("dest",value_desc);
 437                         param_list.add("src",children_list.front().get_value_node());
 438                 }
 439         }
 440         return param_list;
 441 }
 442
 443 Action::ParamList
 444 CanvasInterface::generate_param_list(const std::list<synfigapp::ValueDesc> &value_desc_list)
 445 {
 446         synfigapp::Action::ParamList param_list;
 447         param_list.add("time",get_time());
 448         param_list.add("canvas_interface",etl::handle<CanvasInterface>(this));
 449         param_list.add("canvas",get_canvas());
 450
 451         std::list<synfigapp::ValueDesc>::const_iterator iter;
 452         for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)
 453         {
 454                 param_list.add("value_desc",*iter);
 455                 if(iter->is_value_node())
 456                 {
 457                         param_list.add("value_node",iter->get_value_node());
 458                 }
 459         }
 460
 461
 462         return param_list;
 463 }
 464
 465 void
 466 CanvasInterface::set_rend_desc(const synfig::RendDesc &rend_desc)
 467 {
 468         Action::Handle  action(Action::create("CanvasRendDescSet"));
 469
 470         assert(action);
 471         if(!action)
 472                 return;
 473
 474         action->set_param("canvas",get_canvas());
 475         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 476         action->set_param("rend_desc",rend_desc);
 477
 478         if(!get_instance()->perform_action(action))
 479                 get_ui_interface()->error(_("Action Failed."));
 480 }
 481
 482 void
 483 CanvasInterface::set_name(const synfig::String &x)
 484 {
 485         Action::Handle  action(Action::create("CanvasNameSet"));
 486
 487         assert(action);
 488         if(!action)
 489                 return;
 490
 491         action->set_param("canvas",get_canvas());
 492         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 493         action->set_param("name",x);
 494
 495         if(!get_instance()->perform_action(action))
 496                 get_ui_interface()->error(_("Action Failed."));
 497
 498         signal_id_changed_();
 499 }
 500
 501 void
 502 CanvasInterface::set_description(const synfig::String &x)
 503 {
 504         Action::Handle  action(Action::create("CanvasDescriptionSet"));
 505
 506         assert(action);
 507         if(!action)
 508                 return;
 509
 510         action->set_param("canvas",get_canvas());
 511         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 512         action->set_param("description",x);
 513
 514         if(!get_instance()->perform_action(action))
 515                 get_ui_interface()->error(_("Action Failed."));
 516 }
 517
 518 void
 519 CanvasInterface::set_id(const synfig::String &x)
 520 {
 521         Action::Handle  action(Action::create("CanvasIdSet"));
 522
 523         assert(action);
 524         if(!action)
 525                 return;
 526
 527         action->set_param("canvas",get_canvas());
 528         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 529         action->set_param("id",x);
 530
 531         if(!get_instance()->perform_action(action))
 532                 get_ui_interface()->error(_("Action Failed."));
 533
 534         signal_id_changed_();
 535 }
 536
 537
 538 void
 539 CanvasInterface::jump_to_next_keyframe()
 540 {
 541         synfig::info("Current time: %s",get_time().get_string().c_str());
 542         try
 543         {
 544                 synfig::Keyframe keyframe(*get_canvas()->keyframe_list().find_next(get_time()));
 545                 synfig::info("Jumping to keyframe \"%s\" at %s",keyframe.get_description().c_str(),keyframe.get_time().get_string().c_str());
 546                 set_time(keyframe.get_time());
 547         }
 548         catch(...) { synfig::warning("Unable to find next keyframe"); }
 549 }
 550
 551 void
 552 CanvasInterface::jump_to_prev_keyframe()
 553 {
 554         synfig::info("Current time: %s",get_time().get_string().c_str());
 555         try
 556         {
 557                 synfig::Keyframe keyframe(*get_canvas()->keyframe_list().find_prev(get_time()));
 558                 synfig::info("Jumping to keyframe \"%s\" at %s",keyframe.get_description().c_str(),keyframe.get_time().get_string().c_str());
 559                 set_time(keyframe.get_time());
 560         }
 561         catch(...) { synfig::warning("Unable to find prev keyframe"); }
 562 }
 563
 564 bool
 565 CanvasInterface::import(const synfig::String &filename, synfig::String &errors, synfig::String &warnings, bool resize_image)
 566 {
 567         Action::PassiveGrouper group(get_instance().get(),_("Import Image"));
 568
 569         synfig::info("Attempting to import "+filename);
 570
 571         if (filename_extension(filename) == "")
 572         {
 573                 get_ui_interface()->error(_("Filename must have an extension!"));
 574                 return false;
 575         }
 576
 577         String ext(filename_extension(filename));
 578         if (ext.size()) ext = ext.substr(1); // skip initial '.'
 579         std::transform(ext.begin(),ext.end(),ext.begin(),&::tolower);
 580
 581         // If this is a SIF file, then we need to do things slightly differently
 582         if(ext=="sif" || ext=="sifz")try
 583         {
 584                 Canvas::Handle outside_canvas(synfig::open_canvas(filename, errors, warnings));
 585                 if(!outside_canvas)
 586                         throw String(_("Unable to open this composition")) + ":\n\n" + errors;
 587
 588                 Layer::Handle layer(add_layer_to("PasteCanvas",get_canvas()));
 589                 if(!layer)
 590                         throw String(_("Unable to create \"Paste Canvas\" layer"));
 591                 if(!layer->set_param("canvas",ValueBase(outside_canvas)))
 592                         throw int();
 593                 get_canvas()->register_external_canvas(filename, outside_canvas);
 594
 595                 //layer->set_description(basename(filename));
 596                 signal_layer_new_description()(layer,filename);
 597                 return true;
 598         }
 599         catch(String x)
 600         {
 601                 get_ui_interface()->error(filename + ": " + x);
 602                 return false;
 603         }
 604         catch(...)
 605         {
 606                 get_ui_interface()->error(_("Uncaught exception when attempting\nto open this composition -- ")+filename);
 607                 return false;
 608         }
 609
 610         if(!Importer::book().count(ext))
 611         {
 612                 get_ui_interface()->error(_("I don't know how to open images of this type -- ")+ext);
 613                 return false;
 614         }
 615
 616         try
 617         {
 618                 Layer::Handle layer(add_layer_to("Import",get_canvas()));
 619                 int w,h;
 620                 if(!layer)
 621                         throw int();
 622                 if(!layer->set_param("filename",ValueBase(filename)))
 623                         throw int();
 624                 w=layer->get_param("_width").get(int());
 625                 h=layer->get_param("_height").get(int());
 626                 if(w&&h)
 627                 {
 628                         Vector x, size=ValueBase(get_canvas()->rend_desc().get_br()-get_canvas()->rend_desc().get_tl());
 629
 630                         // vector from top left of canvas to bottom right
 631                         if (resize_image)
 632                         {
 633                                 if(abs(size[0])<abs(size[1]))   // if canvas is tall and thin
 634                                 {
 635                                         x[0]=size[0];   // use full width
 636                                         x[1]=size[0]/w*h; // and scale for height
 637                                         if((size[0]<0) ^ (size[1]<0))
 638                                                 x[1]=-x[1];
 639                                 }
 640                                 else                            // else canvas is short and fat (or maybe square)
 641                                 {
 642                                         x[1]=size[1];   // use full height
 643                                         x[0]=size[1]/h*w; // and scale for width
 644                                         if((size[0]<0) ^ (size[1]<0))
 645                                                 x[0]=-x[0];
 646                                 }
 647                         }
 648                         else
 649                         {
 650                                 x[0] = w/60.0;
 651                                 x[1] = h/60.0;
 652                                 if((size[0]<0)) x[0]=-x[0];
 653                                 if((size[1]<0)) x[1]=-x[1];
 654                         }
 655
 656                         if(!layer->set_param("tl",ValueBase(-x/2)))
 657                                 throw int();
 658                         if(!layer->set_param("br",ValueBase(x/2)))
 659                                 throw int();
 660                 }
 661                 else
 662                 {
 663                         if(!layer->set_param("tl",ValueBase(get_canvas()->rend_desc().get_tl())))
 664                                 throw int();
 665                         if(!layer->set_param("br",ValueBase(get_canvas()->rend_desc().get_br())))
 666                                 throw int();
 667                 }
 668
 669                 layer->set_description(basename(filename));
 670                 signal_layer_new_description()(layer,filename);
 671
 672                 return true;
 673         }
 674         catch(...)
 675         {
 676                 get_ui_interface()->error("Unable to import "+filename);
 677                 group.cancel();
 678                 return false;
 679         }
 680 }
 681
 682
 683 void
 684 CanvasInterface::waypoint_duplicate(synfigapp::ValueDesc value_desc,synfig::Waypoint waypoint)
 685 {
 686         ValueNode::Handle value_node();
 687         waypoint_duplicate(value_desc.get_value_node(), waypoint);
 688 }
 689
 690 void
 691 CanvasInterface::waypoint_duplicate(ValueNode::Handle value_node,synfig::Waypoint waypoint)
 692 {
 693         Action::Handle  action(Action::create("WaypointSetSmart"));
 694
 695         assert(action);
 696         if(!action)
 697                 return;
 698
 699         waypoint.make_unique();
 700         waypoint.set_time(get_time());
 701
 702         action->set_param("canvas",get_canvas());
 703         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 704         action->set_param("waypoint",waypoint);
 705         action->set_param("time",get_time());
 706         action->set_param("value_node",value_node);
 707
 708         if(!get_instance()->perform_action(action))
 709                 get_ui_interface()->error(_("Action Failed."));
 710 }
 711
 712 void
 713 CanvasInterface::waypoint_remove(synfigapp::ValueDesc value_desc,synfig::Waypoint waypoint)
 714 {
 715         ValueNode::Handle value_node();
 716         waypoint_remove(value_desc.get_value_node(), waypoint);
 717 }
 718
 719 void
 720 CanvasInterface::waypoint_remove(ValueNode::Handle value_node,synfig::Waypoint waypoint)
 721 {
 722         Action::Handle  action(Action::create("WaypointRemove"));
 723
 724         assert(action);
 725         if(!action)
 726                 return;
 727
 728         action->set_param("canvas",get_canvas());
 729         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 730         action->set_param("waypoint",waypoint);
 731         action->set_param("value_node",value_node);
 732
 733         if(!get_instance()->perform_action(action))
 734                 get_ui_interface()->error(_("Action Failed."));
 735 }
 736
 737
 738 void
 739 CanvasInterface::auto_export(synfig::ValueNode::Handle /*value_node*/)
 740 {
 741 /*
 742         // Check to see if we are already exported.
 743         if(value_node->is_exported())
 744                 return;
 745
 746         Action::Handle  action(Action::create("ValueNodeAdd"));
 747
 748         assert(action);
 749         if(!action)
 750                 return;
 751
 752         String name(strprintf(_("Unnamed%08d"),synfig::UniqueID().get_uid()));
 753
 754         action->set_param("canvas",get_canvas());
 755         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 756         action->set_param("new",value_node);
 757         action->set_param("name",name);
 758
 759         if(!get_instance()->perform_action(action))
 760                 get_ui_interface()->error(_("Action Failed."));
 761 */
 762 }
 763
 764 void
 765 CanvasInterface::auto_export(const ValueDesc& /*value_desc*/)
 766 {
 767         // THIS FUNCTION IS DEPRECATED, AND IS NOW A STUB.
 768 #if 0
 769         // Check to see if we are already exported.
 770         if(value_desc.is_exported())
 771                 return;
 772
 773         Action::Handle  action(Action::create("ValueDescExport"));
 774
 775         assert(action);
 776         if(!action)
 777                 return;
 778
 779         String name(strprintf(_("Unnamed%08d"),synfig::UniqueID().get_uid()));
 780
 781         action->set_param("canvas",get_canvas());
 782         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 783         action->set_param("value_desc",value_desc);
 784         action->set_param("name",name);
 785
 786         if(!get_instance()->perform_action(action))
 787                 get_ui_interface()->error(_("Action Failed."));
 788 #endif
 789 }
 790
 791 bool
 792 CanvasInterface::change_value(synfigapp::ValueDesc value_desc,synfig::ValueBase new_value)
 793 {
 794         // If this isn't really a change, then don't bother
 795         if(new_value==value_desc.get_value(get_time()))
 796                 return true;
 797
 798         // If this change needs to take place elsewhere, then so be it.
 799         if(value_desc.get_canvas())
 800         {
 801                 if (value_desc.get_canvas()->get_root() != get_canvas()->get_root())
 802                 {
 803                         etl::handle<Instance> instance;
 804                         instance=find_instance(value_desc.get_canvas()->get_root());
 805
 806                         if(instance)
 807                                 return instance->find_canvas_interface(value_desc.get_canvas())->change_value(value_desc,new_value);
 808                         else
 809                         {
 810                                 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."));
 811                                 return false;
 812                         }
 813                 }
 814         }
 815 #ifdef _DEBUG
 816         else
 817         { synfig::warning("Can't get canvas from value desc...?"); }
 818 #endif
 819
 820         synfigapp::Action::Handle action(synfigapp::Action::create("ValueDescSet"));
 821         if(!action)
 822         {
 823                 return false;
 824         }
 825
 826         action->set_param("canvas",get_canvas());
 827         action->set_param("canvas_interface",etl::loose_handle<CanvasInterface>(this));
 828         action->set_param("time",get_time());
 829         action->set_param("value_desc",value_desc);
 830         action->set_param("new_value",new_value);
 831
 832         return get_instance()->perform_action(action);
 833 }
 834
 835 void
 836 CanvasInterface::set_meta_data(const synfig::String& key,const synfig::String& data)
 837 {
 838         get_canvas()->set_meta_data(key,data);
 839 }
 840
 841
 842 // this function goes with find_important_value_descs()
 843 static int
 844 _process_value_desc(const synfigapp::ValueDesc& value_desc,std::vector<synfigapp::ValueDesc>& out, synfig::GUIDSet& guid_set)
 845 {
 846         int ret(0);
 847
 848         if(value_desc.get_value_type()==ValueBase::TYPE_CANVAS)
 849         {
 850                 Canvas::Handle canvas;
 851                 canvas=value_desc.get_value().get(canvas);
 852                 if(!canvas || !canvas->is_inline())
 853                         return ret;
 854                 ret+=CanvasInterface::find_important_value_descs(canvas,out,guid_set);
 855         }
 856
 857         if(value_desc.is_value_node())
 858         {
 859                 ValueNode::Handle value_node(value_desc.get_value_node());
 860
 861                 if(guid_set.count(value_node->get_guid()))
 862                         return ret;
 863                 guid_set.insert(value_node->get_guid());
 864
 865                 if(LinkableValueNode::Handle::cast_dynamic(value_node))
 866                 {
 867                         if(ValueNode_DynamicList::Handle::cast_dynamic(value_node))
 868                         {
 869                                 out.push_back(value_desc);
 870                                 ret++;
 871                         }
 872                         // Process the linkable ValueNode's children
 873                         LinkableValueNode::Handle value_node_copy(LinkableValueNode::Handle::cast_dynamic(value_node));
 874                         int i;
 875                         for(i=0;i<value_node_copy->link_count();i++)
 876                         {
 877                                 ValueNode::Handle link(value_node_copy->get_link(i));
 878                                 if(!link->is_exported())
 879                                         ret+=_process_value_desc(ValueDesc(value_node_copy,i),out,guid_set);
 880                         }
 881                 }
 882                 else if(ValueNode_Animated::Handle::cast_dynamic(value_node))
 883                 {
 884                         out.push_back(value_desc);
 885                         ret++;
 886                 }
 887         }
 888
 889         return ret;
 890 }
 891
 892 int
 893 CanvasInterface::find_important_value_descs(synfig::Canvas::Handle canvas,std::vector<synfigapp::ValueDesc>& out,synfig::GUIDSet& guid_set)
 894 {
 895         int ret(0);
 896         if(!canvas->is_inline())
 897         {
 898                 ValueNodeList::const_iterator iter;
 899
 900                 for(
 901                         iter=canvas->value_node_list().begin();
 902                         iter!=canvas->value_node_list().end();
 903                         ++iter)
 904                         ret+=_process_value_desc(ValueDesc(canvas,(*iter)->get_id()),out,guid_set);
 905         }
 906
 907         Canvas::const_iterator iter;
 908
 909         for(iter=canvas->begin();iter!=canvas->end();++iter)
 910         {
 911                 Layer::Handle layer(*iter);
 912
 913                 Layer::DynamicParamList::const_iterator iter;
 914                 for(
 915                         iter=layer->dynamic_param_list().begin();
 916                         iter!=layer->dynamic_param_list().end();
 917                         ++iter)
 918                 {
 919                         if(!iter->second->is_exported())
 920                                 ret+=_process_value_desc(ValueDesc(layer,iter->first),out,guid_set);
 921                 }
 922                 ValueBase value(layer->get_param("canvas"));
 923                 if(value.is_valid())
 924                         ret+=_process_value_desc(ValueDesc(layer,"canvas"),out,guid_set);
 925         }
 926
 927         return ret;
 928 }
 929
 930 int
 931 CanvasInterface::find_important_value_descs(std::vector<synfigapp::ValueDesc>& out)
 932 {
 933         synfig::GUIDSet tmp;
 934         return find_important_value_descs(get_canvas(),out,tmp);
 935 }
 936
 937 void
 938 CanvasInterface::seek_frame(int frames)
 939 {
 940         if(!frames)
 941                 return;
 942         float fps(get_canvas()->rend_desc().get_frame_rate());
 943         Time newtime(get_time()+(float)frames/fps);
 944         newtime=newtime.round(fps);
 945
 946         if(newtime<=get_canvas()->rend_desc().get_time_start())
 947                 newtime=get_canvas()->rend_desc().get_time_start();
 948         if(newtime>=get_canvas()->rend_desc().get_time_end())
 949                 newtime=get_canvas()->rend_desc().get_time_end();
 950         set_time(newtime);
 951 }
 952
 953 void
 954 CanvasInterface::seek_time(synfig::Time time)
 955 {
 956         if(!time)
 957                 return;
 958
 959         float fps(get_canvas()->rend_desc().get_frame_rate());
 960
 961         if(time>=synfig::Time::end())
 962         {
 963                 set_time(get_canvas()->rend_desc().get_time_end());
 964                 return;
 965         }
 966         if(time<=synfig::Time::begin())
 967         {
 968                 set_time(get_canvas()->rend_desc().get_time_start());
 969                 return;
 970         }
 971
 972         Time newtime(get_time()+time);
 973         newtime=newtime.round(fps);
 974
 975         if(newtime<=get_canvas()->rend_desc().get_time_start())
 976                 newtime=get_canvas()->rend_desc().get_time_start();
 977         if(newtime>=get_canvas()->rend_desc().get_time_end())
 978                 newtime=get_canvas()->rend_desc().get_time_end();
 979         set_time(newtime);
 980 }