synfig-core/src/synfig/layer.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file layer.cpp
   3 **      \brief Layer class implementation
   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 "canvas.h"
  34 #include "layer.h"
  35 #include "render.h"
  36 #include "value.h"
  37 #include "layer_bitmap.h"
  38 #include "layer_mime.h"
  39 #include "context.h"
  40 #include "paramdesc.h"
  41
  42 #include "layer_solidcolor.h"
  43 #include "layer_polygon.h"
  44 #include "layer_pastecanvas.h"
  45 #include "layer_motionblur.h"
  46 #include "layer_duplicate.h"
  47
  48 #include "valuenode_const.h"
  49
  50 #include "transform.h"
  51 #include "rect.h"
  52 #include "guid.h"
  53
  54 #include <sigc++/adaptors/bind.h>
  55 #endif
  56
  57 /* === U S I N G =========================================================== */
  58
  59 using namespace etl;
  60 using namespace std;
  61 using namespace synfig;
  62
  63 /* === G L O B A L S ======================================================= */
  64
  65 static Layer::Book* _layer_book;
  66
  67 struct _LayerCounter
  68 {
  69         static int counter;
  70         ~_LayerCounter()
  71         {
  72                 if(counter)
  73                         synfig::error("%d layers not yet deleted!",counter);
  74         }
  75 } _layer_counter;
  76
  77 int _LayerCounter::counter(0);
  78
  79 /* === P R O C E D U R E S ================================================= */
  80
  81 Layer::Book&
  82 Layer::book()
  83 {
  84         return *_layer_book;
  85 }
  86
  87 void
  88 Layer::register_in_book(const BookEntry &entry)
  89 {
  90         book()[entry.name]=entry;
  91 }
  92
  93 bool
  94 Layer::subsys_init()
  95 {
  96         _layer_book=new Book();
  97
  98 #define INCLUDE_LAYER(class)                                                                    \
  99         synfig::Layer::book() [synfig::String(class::name__)] =         \
 100                 BookEntry(class::create,                                                                \
 101                                   class::name__,                                                                \
 102                                   dgettext("synfig", class::local_name__),              \
 103                                   class::category__,                                                    \
 104                                   class::cvs_id__,                                                              \
 105                                   class::version__)
 106
 107 #define LAYER_ALIAS(class,alias)                                                                \
 108         synfig::Layer::book()[synfig::String(alias)] =                          \
 109                 BookEntry(class::create,                                                                \
 110                                   alias,                                                                                \
 111                                   alias,                                                                                \
 112                                   CATEGORY_DO_NOT_USE,                                                  \
 113                                   class::cvs_id__,                                                              \
 114                                   class::version__)
 115
 116         INCLUDE_LAYER(Layer_SolidColor);        LAYER_ALIAS(Layer_SolidColor,   "solid_color");
 117         INCLUDE_LAYER(Layer_PasteCanvas);       LAYER_ALIAS(Layer_PasteCanvas,  "paste_canvas");
 118         INCLUDE_LAYER(Layer_Polygon);           LAYER_ALIAS(Layer_Polygon,              "Polygon");
 119         INCLUDE_LAYER(Layer_MotionBlur);        LAYER_ALIAS(Layer_MotionBlur,   "motion_blur");
 120         INCLUDE_LAYER(Layer_Duplicate);
 121
 122 #undef INCLUDE_LAYER
 123
 124         return true;
 125 }
 126
 127 bool
 128 Layer::subsys_stop()
 129 {
 130         delete _layer_book;
 131         return true;
 132 }
 133
 134 /* === M E T H O D S ======================================================= */
 135
 136 Layer::Layer():
 137         active_(true),
 138         z_depth_(0.0f),
 139         dirty_time_(Time::end())
 140 {
 141         _LayerCounter::counter++;
 142 }
 143
 144 Layer::LooseHandle
 145 synfig::Layer::create(const String &name)
 146 {
 147         if(!book().count(name))
 148         {
 149                 return Layer::LooseHandle(new Layer_Mime(name));
 150         }
 151
 152         Layer* layer(book()[name].factory());
 153         return Layer::LooseHandle(layer);
 154 }
 155
 156 synfig::Layer::~Layer()
 157 {
 158         _LayerCounter::counter--;
 159         while(!dynamic_param_list_.empty())
 160         {
 161                 remove_child(dynamic_param_list_.begin()->second.get());
 162                 dynamic_param_list_.erase(dynamic_param_list_.begin());
 163         }
 164
 165         remove_from_all_groups();
 166
 167         parent_death_connect_.disconnect();
 168         begin_delete();
 169 }
 170
 171 void
 172 synfig::Layer::set_canvas(etl::loose_handle<Canvas> x)
 173 {
 174         if(canvas_!=x)
 175         {
 176                 parent_death_connect_.disconnect();
 177                 canvas_=x;
 178                 if(x)
 179                 {
 180                         parent_death_connect_=x->signal_deleted().connect(
 181                                 sigc::bind(
 182                                         sigc::mem_fun(
 183                                                 *this,
 184                                                 &Layer::set_canvas
 185                                         ),
 186                                         etl::loose_handle<synfig::Canvas>(0)
 187                                 )
 188                         );
 189                 }
 190                 on_canvas_set();
 191         }
 192 }
 193
 194 void
 195 synfig::Layer::on_canvas_set()
 196 {
 197 }
 198
 199 etl::loose_handle<synfig::Canvas>
 200 synfig::Layer::get_canvas()const
 201 {
 202         return canvas_;
 203 }
 204
 205 int
 206 Layer::get_depth()const
 207 {
 208         if(!get_canvas())
 209                 return -1;
 210         return get_canvas()->get_depth(const_cast<synfig::Layer*>(this));
 211 }
 212
 213 void
 214 Layer::set_active(bool x)
 215 {
 216         if(active_!=x)
 217         {
 218                 active_=x;
 219
 220                 Node::on_changed();
 221                 signal_status_changed_();
 222         }
 223 }
 224
 225 void
 226 Layer::set_description(const String& x)
 227 {
 228         if(description_!=x)
 229         {
 230                 description_=x;
 231                 signal_description_changed_();
 232         }
 233 }
 234
 235 bool
 236 Layer::connect_dynamic_param(const String& param, etl::loose_handle<ValueNode> value_node)
 237 {
 238         ValueNode::Handle previous(dynamic_param_list_[param]);
 239
 240         if(previous==value_node)
 241                 return true;
 242
 243         dynamic_param_list_[param]=ValueNode::Handle(value_node);
 244
 245         if(previous)
 246                 remove_child(previous.get());
 247
 248         add_child(value_node.get());
 249
 250         if(!value_node->is_exported() && get_canvas())
 251         {
 252                 value_node->set_parent_canvas(get_canvas());
 253         }
 254
 255         changed();
 256         return true;
 257 }
 258
 259 bool
 260 Layer::disconnect_dynamic_param(const String& param)
 261 {
 262         ValueNode::Handle previous(dynamic_param_list_[param]);
 263
 264         if(previous)
 265         {
 266                 dynamic_param_list_.erase(param);
 267
 268                 // fix 2353284: if two parameters in the same layer are
 269                 // connected to the same valuenode and we disconnect one of
 270                 // them, the parent-child relationship for the remaining
 271                 // connection was being deleted.  now we search the parameter
 272                 // list to see if another parameter uses the same valuenode
 273                 DynamicParamList::const_iterator iter;
 274                 for (iter = dynamic_param_list().begin(); iter != dynamic_param_list().end(); iter++)
 275                         if (iter->second == previous)
 276                                 break;
 277                 if (iter == dynamic_param_list().end())
 278                         remove_child(previous.get());
 279
 280                 changed();
 281         }
 282         return true;
 283 }
 284
 285 void
 286 Layer::on_changed()
 287 {
 288         dirty_time_=Time::end();
 289         Node::on_changed();
 290 }
 291
 292 bool
 293 Layer::set_param(const String &param, const ValueBase &value)
 294 {
 295         if(param=="z_depth" && value.same_type_as(z_depth_))
 296         {
 297                 z_depth_=value.get(z_depth_);
 298                 z_depth_static=value.get_static();
 299                 return true;
 300         }
 301         return false;
 302 }
 303
 304 bool
 305 Layer::set_param_static(const String &param, const bool x)
 306 {
 307         if(param=="z_depth" && z_depth_static!=x)
 308         {
 309                 z_depth_static=x;
 310                 return true;
 311         }
 312
 313         return false;
 314 }
 315
 316
 317 bool
 318 Layer::get_param_static(const String &param) const
 319 {
 320         if(param=="z_depth")
 321                 return z_depth_static;
 322
 323         return false;
 324 }
 325
 326
 327 etl::handle<Transform>
 328 Layer::get_transform()const
 329 {
 330         return 0;
 331 }
 332
 333 float
 334 Layer::get_z_depth(const synfig::Time& t)const
 335 {
 336         if(!dynamic_param_list().count("z_depth"))
 337                 return z_depth_;
 338         return (*dynamic_param_list().find("z_depth")->second)(t).get(Real());
 339 }
 340
 341 Layer::Handle
 342 Layer::simple_clone()const
 343 {
 344         if(!book().count(get_name())) return 0;
 345         Handle ret = create(get_name()).get();
 346         ret->group_=group_;
 347         //ret->set_canvas(get_canvas());
 348         ret->set_description(get_description());
 349         ret->set_active(active());
 350         ret->set_param_list(get_param_list());
 351         for(DynamicParamList::const_iterator iter=dynamic_param_list().begin();iter!=dynamic_param_list().end();++iter)
 352                 ret->connect_dynamic_param(iter->first, iter->second);
 353         return ret;
 354 }
 355
 356 Layer::Handle
 357 Layer::clone(const GUID& deriv_guid) const
 358 {
 359         if(!book().count(get_name())) return 0;
 360
 361         //Layer *ret = book()[get_name()].factory();//create(get_name()).get();
 362         Handle ret = create(get_name()).get();
 363
 364         ret->group_=group_;
 365         //ret->set_canvas(get_canvas());
 366         ret->set_description(get_description());
 367         ret->set_active(active());
 368         ret->set_guid(get_guid()^deriv_guid);
 369
 370         //ret->set_param_list(get_param_list());
 371         // Process the parameter list so that
 372         // we can duplicate any inline canvases
 373         ParamList param_list(get_param_list());
 374         for(ParamList::const_iterator iter(param_list.begin()); iter != param_list.end(); ++iter)
 375         {
 376                 if(dynamic_param_list().count(iter->first)==0 && iter->second.get_type()==ValueBase::TYPE_CANVAS)
 377                 {
 378                         // This parameter is a canvas.  We need a close look.
 379                         Canvas::Handle canvas(iter->second.get(Canvas::Handle()));
 380                         if(canvas && canvas->is_inline())
 381                         {
 382                                 // This parameter is an inline canvas! we need to clone it
 383                                 // before we set it as a parameter.
 384                                 Canvas::Handle new_canvas(canvas->clone(deriv_guid));
 385                                 ValueBase value(new_canvas);
 386                                 ret->set_param(iter->first, value);
 387                                 continue;
 388                         }
 389                 }
 390
 391                 // This is a normal parameter,go ahead and set it.
 392                 ret->set_param(iter->first, iter->second);
 393         }
 394
 395         // Duplicate the dynamic paramlist, but only the exported data nodes
 396         DynamicParamList::const_iterator iter;
 397         for(iter=dynamic_param_list().begin();iter!=dynamic_param_list().end();++iter)
 398         {
 399                 // Make sure we clone inline canvases
 400                 if(iter->second->get_type()==ValueBase::TYPE_CANVAS)
 401                 {
 402                         Canvas::Handle canvas((*iter->second)(0).get(Canvas::Handle()));
 403                         if(canvas->is_inline())
 404                         {
 405                                 Canvas::Handle new_canvas(canvas->clone(deriv_guid));
 406                                 ValueBase value(new_canvas);
 407                                 ret->connect_dynamic_param(iter->first,ValueNode_Const::create(value));
 408                                 continue;
 409                         }
 410                 }
 411
 412                 if(iter->second->is_exported())
 413                         ret->connect_dynamic_param(iter->first,iter->second);
 414                 else
 415                         ret->connect_dynamic_param(iter->first,iter->second->clone(deriv_guid));
 416         }
 417
 418         //ret->set_canvas(0);
 419
 420         return ret;
 421 }
 422
 423 bool
 424 Layer::reads_context() const
 425 {
 426         return false;
 427 }
 428
 429 Rect
 430 Layer::get_full_bounding_rect(Context context)const
 431 {
 432         if(active())
 433                 return context.get_full_bounding_rect()|get_bounding_rect();
 434         return context.get_full_bounding_rect();
 435 }
 436
 437 Rect
 438 Layer::get_bounding_rect()const
 439 {
 440         return Rect::full_plane();
 441 }
 442
 443 bool
 444 Layer::set_param_list(const ParamList &list)
 445 {
 446         bool ret=true;
 447         if(!list.size())
 448                 return false;
 449         ParamList::const_iterator iter(list.begin());
 450         for(;iter!=list.end();++iter)
 451         {
 452                 if(!set_param(iter->first, iter->second))ret=false;
 453         }
 454         return ret;
 455 }
 456
 457 Layer::ParamList
 458 Layer::get_param_list()const
 459 {
 460         ParamList ret;
 461
 462         Vocab vocab(get_param_vocab());
 463
 464         Vocab::const_iterator iter=vocab.begin();
 465         for(;iter!=vocab.end();++iter)
 466         {
 467                 ret[iter->get_name()]=get_param(iter->get_name());
 468         }
 469         return ret;
 470 }
 471
 472 ValueBase
 473 Layer::get_param(const String & param)const
 474 {
 475         if(param=="z_depth")
 476         {
 477                 synfig::ValueBase ret(get_z_depth());
 478                 ret.set_static(z_depth_static);
 479                 return ret;
 480         }
 481         return ValueBase();
 482 }
 483
 484 String
 485 Layer::get_version()const
 486 {
 487         return get_param("version__").get(String());
 488 }
 489
 490 bool
 491 Layer::set_version(const String &/*ver*/)
 492 {
 493         return false;
 494 }
 495
 496 void
 497 Layer::reset_version()
 498 {
 499 }
 500
 501
 502 void
 503 Layer::set_time(Context context, Time time)const
 504 {
 505         context.set_time(time);
 506         dirty_time_=time;
 507 }
 508
 509 void
 510 Layer::set_time(Context context, Time time, const Point &pos)const
 511 {
 512         context.set_time(time,pos);
 513         dirty_time_=time;
 514 }
 515
 516 Color
 517 Layer::get_color(Context context, const Point &pos)const
 518 {
 519         return context.get_color(pos);
 520 }
 521
 522 synfig::Layer::Handle
 523 Layer::hit_check(synfig::Context context, const synfig::Point &pos)const
 524 {
 525         return context.hit_check(pos);
 526 }
 527
 528 /*      The default accelerated renderer
 529 **      is anything but accelerated...
 530 */
 531 bool
 532 Layer::accelerated_render(Context context,Surface *surface,int /*quality*/, const RendDesc &renddesc, ProgressCallback *cb)  const
 533 {
 534         handle<Target> target=surface_target(surface);
 535         if(!target)
 536         {
 537                 if(cb)cb->error(_("Unable to create surface target"));
 538                 return false;
 539         }
 540         RendDesc desc=renddesc;
 541         target->set_rend_desc(&desc);
 542
 543         // When we render, we want to
 544         // make sure that we are rendered too...
 545         // Since the context iterator is for
 546         // the layer after us, we need to back up.
 547         // This could be considered a hack, as
 548         // it is a possibility that we are indeed
 549         // not the previous layer.
 550         --context;
 551
 552         return render(context,target,desc,cb);
 553         //return render_threaded(context,target,desc,cb,2);
 554 }
 555
 556 String
 557 Layer::get_name()const
 558 {
 559         return get_param("name__").get(String());
 560 }
 561
 562 String
 563 Layer::get_local_name()const
 564 {
 565         return get_param("local_name__").get(String());
 566 }
 567
 568
 569 Layer::Vocab
 570 Layer::get_param_vocab()const
 571 {
 572         Layer::Vocab ret;
 573
 574         ret.push_back(ParamDesc(z_depth_,"z_depth")
 575                 .set_local_name(_("Z Depth"))
 576                 .set_animation_only(true)
 577         );
 578
 579         return ret;
 580 }
 581
 582 void
 583 Layer::get_times_vfunc(Node::time_set &set) const
 584 {
 585         DynamicParamList::const_iterator        i = dynamic_param_list_.begin(),
 586                                                                                 end = dynamic_param_list_.end();
 587
 588         for(; i != end; ++i)
 589         {
 590                 const Node::time_set &tset = i->second->get_times();
 591                 set.insert(tset.begin(),tset.end());
 592         }
 593 }
 594
 595
 596 void
 597 Layer::add_to_group(const String&x)
 598 {
 599         if(x==group_)
 600                 return;
 601         if(!group_.empty())
 602                 remove_from_all_groups();
 603         group_=x;
 604         signal_added_to_group()(group_);
 605 }
 606
 607 void
 608 Layer::remove_from_group(const String&x)
 609 {
 610         if(group_==x)
 611                 remove_from_all_groups();
 612 }
 613
 614 void
 615 Layer::remove_from_all_groups()
 616 {
 617         if(group_.empty())
 618                 return;
 619         signal_removed_from_group()(group_);
 620         group_.clear();
 621 }
 622
 623 String
 624 Layer::get_group()const
 625 {
 626         return group_;
 627 }
 628
 629 const String
 630 Layer::get_param_local_name(const String &param_name)const
 631 {
 632         ParamVocab vocab = get_param_vocab();
 633         // loop to find the parameter in the parameter vocab - this gives us its local name
 634         for (ParamVocab::iterator iter = vocab.begin(); iter != vocab.end(); iter++)
 635                 if (iter->get_name() == param_name)
 636                         return iter->get_local_name();
 637         return String();
 638 }