synfig-studio/trunk/src/gtkmm/state_bline.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_bline.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 <gtkmm/dialog.h>
  34 #include <gtkmm/entry.h>
  35
  36 #include <synfig/valuenode_dynamiclist.h>
  37
  38 #include "state_bline.h"
  39 #include "canvasview.h"
  40 #include "workarea.h"
  41 #include "app.h"
  42 #include <synfig/valuenode_bline.h>
  43 #include <ETL/hermite>
  44 #include <ETL/calculus>
  45 #include <utility>
  46 #include "event_mouse.h"
  47 #include "event_layerclick.h"
  48 #include "toolbox.h"
  49 #include "dialog_tooloptions.h"
  50 #include <gtkmm/spinbutton.h>
  51 #include <synfig/transform.h>
  52 #include <synfigapp/main.h>
  53
  54 #include "general.h"
  55
  56 #endif
  57
  58 /* === U S I N G =========================================================== */
  59
  60 using namespace std;
  61 using namespace etl;
  62 using namespace synfig;
  63 using namespace studio;
  64
  65 /* === M A C R O S ========================================================= */
  66
  67 // if defined, show the first duck as green while drawing
  68 #define DISTINGUISH_FIRST_DUCK
  69
  70 /* === G L O B A L S ======================================================= */
  71
  72 StateBLine studio::state_bline;
  73
  74 /* === C L A S S E S & S T R U C T S ======================================= */
  75
  76 class studio::StateBLine_Context : public sigc::trackable
  77 {
  78         etl::handle<CanvasView> canvas_view_;
  79         CanvasView::IsWorking is_working;
  80
  81         bool prev_table_status;
  82         bool loop_;
  83         bool prev_workarea_layer_status_;
  84
  85         int depth;
  86         Canvas::Handle canvas;
  87
  88         Gtk::Menu menu;
  89
  90         Duckmatic::Push duckmatic_push;
  91
  92         etl::handle<Duck> curr_duck;
  93
  94         etl::handle<Duck> next_duck;
  95
  96         std::list<synfig::ValueNode_Const::Handle> bline_point_list;
  97         synfigapp::Settings& settings;
  98
  99         bool on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 100         bool on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 101         bool on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 102
 103
 104         void popup_handle_menu(synfig::ValueNode_Const::Handle value_node);
 105         void popup_vertex_menu(synfig::ValueNode_Const::Handle value_node);
 106         void popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node);
 107
 108         void bline_detach_handle(synfig::ValueNode_Const::Handle value_node);
 109         void bline_attach_handle(synfig::ValueNode_Const::Handle value_node);
 110         void bline_delete_vertex(synfig::ValueNode_Const::Handle value_node);
 111         void bline_insert_vertex(synfig::ValueNode_Const::Handle value_node,float origin=0.5);
 112         void loop_bline();
 113         void unloop_bline();
 114
 115         void refresh_ducks(bool x=true);
 116
 117         Gtk::Table options_table;
 118         Gtk::Entry entry_id;
 119         Gtk::CheckButton checkbutton_layer_region;
 120         Gtk::CheckButton checkbutton_layer_outline;
 121         Gtk::CheckButton checkbutton_layer_curve_gradient;
 122         Gtk::CheckButton checkbutton_layer_plant;
 123         Gtk::CheckButton checkbutton_layer_link_origins;
 124         Gtk::CheckButton checkbutton_auto_export;
 125         Gtk::Button button_make;
 126         Gtk::Button button_clear;
 127         Gtk::Adjustment  adj_feather;
 128         Gtk::SpinButton  spin_feather;
 129
 130
 131
 132 public:
 133
 134         int layers_to_create()const
 135         {
 136                 return
 137                         get_layer_region_flag() +
 138                         get_layer_outline_flag() +
 139                         get_layer_curve_gradient_flag() +
 140                         get_layer_plant_flag();
 141         }
 142
 143         void sanity_check()
 144         {
 145                 if(layers_to_create()==0)
 146                         set_layer_region_flag(true);
 147         }
 148
 149         bool get_auto_export_flag()const { return checkbutton_auto_export.get_active(); }
 150         void set_auto_export_flag(bool x) { return checkbutton_auto_export.set_active(x); }
 151
 152         bool get_layer_region_flag()const { return checkbutton_layer_region.get_active(); }
 153         void set_layer_region_flag(bool x) { return checkbutton_layer_region.set_active(x); }
 154
 155         bool get_layer_outline_flag()const { return checkbutton_layer_outline.get_active(); }
 156         void set_layer_outline_flag(bool x) { return checkbutton_layer_outline.set_active(x); }
 157
 158         bool get_layer_curve_gradient_flag()const { return checkbutton_layer_curve_gradient.get_active(); }
 159         void set_layer_curve_gradient_flag(bool x) { return checkbutton_layer_curve_gradient.set_active(x); }
 160
 161         bool get_layer_plant_flag()const { return checkbutton_layer_plant.get_active(); }
 162         void set_layer_plant_flag(bool x) { return checkbutton_layer_plant.set_active(x); }
 163
 164         bool get_layer_link_origins_flag()const { return checkbutton_layer_link_origins.get_active(); }
 165         void set_layer_link_origins_flag(bool x) { return checkbutton_layer_link_origins.set_active(x); }
 166
 167         Real get_feather() const { return adj_feather.get_value(); }
 168         void set_feather(Real x) { return adj_feather.set_value(x); }
 169         synfig::String get_id()const { return entry_id.get_text(); }
 170         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 171
 172         Smach::event_result event_stop_handler(const Smach::event& x);
 173
 174         Smach::event_result event_refresh_handler(const Smach::event& x);
 175
 176         Smach::event_result event_mouse_click_handler(const Smach::event& x);
 177         Smach::event_result event_mouse_release_handler(const Smach::event& x);
 178         Smach::event_result event_mouse_motion_handler(const Smach::event& x);
 179         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 180
 181         Smach::event_result event_hijack(const Smach::event& /*x*/) { return Smach::RESULT_ACCEPT; }
 182
 183         void refresh_tool_options();
 184
 185         StateBLine_Context(CanvasView* canvas_view);
 186
 187         ~StateBLine_Context();
 188
 189         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 190         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 191         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 192         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 193         const synfig::TransformStack& get_transform_stack()const { return canvas_view_->get_curr_transform_stack(); }
 194
 195         void load_settings();
 196         void save_settings();
 197         void reset();
 198         void increment_id();
 199         //void on_user_click(synfig::Point point);
 200
 201         bool run_();
 202         bool run();
 203
 204         bool egress_on_selection_change;
 205         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
 206         {
 207                 if(egress_on_selection_change)
 208                         throw Smach::egress_exception();
 209                 return Smach::RESULT_OK;
 210         }
 211
 212 };      // END of class StateBLine_Context
 213
 214
 215 /* === M E T H O D S ======================================================= */
 216
 217 StateBLine::StateBLine():
 218         Smach::state<StateBLine_Context>("bline")
 219 {
 220         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,         &StateBLine_Context::event_layer_selection_changed_handler));
 221         insert(event_def(EVENT_STOP,                                            &StateBLine_Context::event_stop_handler));
 222         insert(event_def(EVENT_REFRESH,                                         &StateBLine_Context::event_refresh_handler));
 223         insert(event_def(EVENT_REFRESH_DUCKS,                           &StateBLine_Context::event_hijack));
 224         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,      &StateBLine_Context::event_mouse_click_handler));
 225         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,        &StateBLine_Context::event_mouse_release_handler));
 226         insert(event_def(EVENT_WORKAREA_MOUSE_MOTION,           &StateBLine_Context::event_mouse_motion_handler));
 227         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,      &StateBLine_Context::event_mouse_motion_handler));
 228         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,            &StateBLine_Context::event_refresh_tool_options));
 229 }
 230
 231 StateBLine::~StateBLine()
 232 {
 233 }
 234
 235 void
 236 StateBLine_Context::load_settings()
 237 {
 238         String value;
 239
 240         if(settings.get_value("bline.layer_region",value) && value=="0")
 241                 set_layer_region_flag(false);
 242         else
 243                 set_layer_region_flag(true);
 244
 245         if(settings.get_value("bline.layer_outline",value) && value=="0")
 246                 set_layer_outline_flag(false);
 247         else
 248                 set_layer_outline_flag(true);
 249
 250         if(settings.get_value("bline.layer_curve_gradient",value) && value=="1")
 251                 set_layer_curve_gradient_flag(true);
 252         else
 253                 set_layer_curve_gradient_flag(false);
 254
 255         if(settings.get_value("bline.layer_plant",value) && value=="1")
 256                 set_layer_plant_flag(true);
 257         else
 258                 set_layer_plant_flag(false);
 259
 260         if(settings.get_value("bline.layer_link_origins",value) && value=="0")
 261                 set_layer_link_origins_flag(false);
 262         else
 263                 set_layer_link_origins_flag(true);
 264
 265         if(settings.get_value("bline.auto_export",value) && value=="1")
 266                 set_auto_export_flag(true);
 267         else
 268                 set_auto_export_flag(false);
 269
 270         if(settings.get_value("bline.id",value))
 271                 set_id(value);
 272         else
 273                 set_id("NewBLine");
 274
 275         if(settings.get_value("bline.feather",value))
 276         {
 277                 Real n = atof(value.c_str());
 278                 set_feather(n);
 279         }
 280
 281         sanity_check();
 282 }
 283
 284 void
 285 StateBLine_Context::save_settings()
 286 {
 287         sanity_check();
 288         settings.set_value("bline.layer_outline",get_layer_outline_flag()?"1":"0");
 289         settings.set_value("bline.layer_region",get_layer_region_flag()?"1":"0");
 290         settings.set_value("bline.layer_curve_gradient",get_layer_curve_gradient_flag()?"1":"0");
 291         settings.set_value("bline.layer_plant",get_layer_plant_flag()?"1":"0");
 292         settings.set_value("bline.layer_link_origins",get_layer_link_origins_flag()?"1":"0");
 293         settings.set_value("bline.auto_export",get_auto_export_flag()?"1":"0");
 294         settings.set_value("bline.id",get_id().c_str());
 295         settings.set_value("bline.feather",strprintf("%f",get_feather()));
 296 }
 297
 298 void
 299 StateBLine_Context::reset()
 300 {
 301         loop_=false;
 302         bline_point_list.clear();
 303         refresh_ducks();
 304 }
 305
 306 void
 307 StateBLine_Context::increment_id()
 308 {
 309         String id(get_id());
 310         int number=1;
 311         int digits=0;
 312
 313         if(id.empty())
 314                 id="NewBLine";
 315
 316         // If there is a number
 317         // already at the end of the
 318         // id, then remove it.
 319         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 320         {
 321                 // figure out how many digits it is
 322                 for (digits = 0;
 323                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 324                          digits++)
 325                         ;
 326
 327                 String str_number;
 328                 str_number=String(id,id.size()-digits,id.size());
 329                 id=String(id,0,id.size()-digits);
 330                 // synfig::info("---------------- \"%s\"",str_number.c_str());
 331
 332                 number=atoi(str_number.c_str());
 333         }
 334         else
 335         {
 336                 number=1;
 337                 digits=3;
 338         }
 339
 340         number++;
 341
 342         // Add the number back onto the id
 343         {
 344                 const String format(strprintf("%%0%dd",digits));
 345                 id+=strprintf(format.c_str(),number);
 346         }
 347
 348         // Set the ID
 349         set_id(id);
 350 }
 351
 352
 353 StateBLine_Context::StateBLine_Context(CanvasView* canvas_view):
 354         canvas_view_(canvas_view),
 355         is_working(*canvas_view),
 356         loop_(false),
 357         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 358         duckmatic_push(get_work_area()),
 359         settings(synfigapp::Main::get_selected_input_device()->settings()),
 360         entry_id(),
 361         checkbutton_layer_region(_("Create Region BLine")),
 362         checkbutton_layer_outline(_("Create Outline BLine")),
 363         checkbutton_layer_curve_gradient(_("Create Curve Gradient BLine")),
 364         checkbutton_layer_plant(_("Create Plant BLine")),
 365         checkbutton_layer_link_origins(_("Link Origins")),
 366         checkbutton_auto_export(_("Auto Export")),
 367         button_make(_("Make")),
 368         button_clear(_("Clear")),
 369         adj_feather(0,0,10000,0.01,0.1),
 370         spin_feather(adj_feather,0.01,4)
 371 {
 372         depth=-1;
 373         egress_on_selection_change=true;
 374         load_settings();
 375
 376         // Set up the tool options dialog
 377         options_table.attach(*manage(new Gtk::Label(_("BLine Tool"))),  0, 2,  0,  1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 378         options_table.attach(entry_id,                                                                  0, 2,  1,  2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 379         options_table.attach(checkbutton_layer_outline,                                 0, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 380         options_table.attach(checkbutton_layer_region,                                  0, 2,  3,  4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 381         options_table.attach(checkbutton_layer_plant,                                   0, 2,  4,  5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 382         options_table.attach(checkbutton_layer_curve_gradient,                  0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 383         options_table.attach(checkbutton_layer_link_origins,                    0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 384         options_table.attach(checkbutton_auto_export,                                   0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 385         options_table.attach(*manage(new Gtk::Label(_("Feather"))),     0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 386         options_table.attach(spin_feather,                                                              1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 387         //options_table.attach(button_make, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 388         //button_make.signal_pressed().connect(sigc::mem_fun(*this,&StateBLine_Context::run));
 389         options_table.show_all();
 390         refresh_tool_options();
 391         App::dialog_tool_options->present();
 392
 393         // Turn off layer clicking
 394         get_work_area()->set_allow_layer_clicks(false);
 395
 396         // clear out the ducks
 397         get_work_area()->clear_ducks();
 398
 399         // Refresh the work area
 400         get_work_area()->queue_draw();
 401
 402         // Hide the tables if they are showing
 403         prev_table_status=get_canvas_view()->tables_are_visible();
 404         if(prev_table_status)get_canvas_view()->hide_tables();
 405
 406         // Disable the time bar
 407         get_canvas_view()->set_sensitive_timebar(false);
 408
 409         // Connect a signal
 410         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateBLine_Context::on_user_click));
 411         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 412
 413         App::toolbox->refresh();
 414 }
 415
 416 void
 417 StateBLine_Context::refresh_tool_options()
 418 {
 419         App::dialog_tool_options->clear();
 420         App::dialog_tool_options->set_widget(options_table);
 421         App::dialog_tool_options->set_local_name(_("BLine Tool"));
 422         App::dialog_tool_options->set_name("bline");
 423
 424         App::dialog_tool_options->add_button(
 425                 Gtk::StockID("gtk-execute"),
 426                 _("Make BLine and/or Region")
 427         )->signal_clicked().connect(
 428                 sigc::hide_return(sigc::mem_fun(
 429                         *this,
 430                         &StateBLine_Context::run
 431                 ))
 432         );
 433
 434         App::dialog_tool_options->add_button(
 435                 Gtk::StockID("gtk-clear"),
 436                 _("Clear current BLine")
 437         )->signal_clicked().connect(
 438                 sigc::mem_fun(
 439                         *this,
 440                         &StateBLine_Context::reset
 441                 )
 442         );
 443 }
 444
 445 Smach::event_result
 446 StateBLine_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 447 {
 448         refresh_tool_options();
 449         return Smach::RESULT_ACCEPT;
 450 }
 451
 452 StateBLine_Context::~StateBLine_Context()
 453 {
 454         run();
 455
 456         save_settings();
 457         App::dialog_tool_options->clear();
 458
 459         get_canvas_view()->work_area->reset_cursor();
 460
 461         // Restore layer clicking
 462         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 463
 464         // Enable the time bar
 465         get_canvas_view()->set_sensitive_timebar(true);
 466
 467         // Bring back the tables if they were out before
 468         if(prev_table_status)get_canvas_view()->show_tables();
 469
 470 //      get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
 471
 472         // Refresh the work area
 473         get_work_area()->queue_draw();
 474
 475         App::toolbox->refresh();
 476 }
 477
 478 Smach::event_result
 479 StateBLine_Context::event_stop_handler(const Smach::event& /*x*/)
 480 {
 481 //      synfig::info("STATE RotoBLine: Received Stop Event");
 482 //      run();
 483         reset();
 484 //      throw Smach::egress_exception();
 485 //      get_canvas_view()->get_smach().pop_state();
 486         return Smach::RESULT_ACCEPT;
 487 }
 488
 489 Smach::event_result
 490 StateBLine_Context::event_refresh_handler(const Smach::event& /*x*/)
 491 {
 492 //      synfig::info("STATE RotoBLine: Received Refresh Event");
 493         refresh_ducks();
 494         return Smach::RESULT_ACCEPT;
 495 }
 496
 497 bool
 498 StateBLine_Context::run()
 499 {
 500         sanity_check();
 501
 502         String err;
 503         bool success(false);
 504         for(int i=5;i>0 && !success;i--)try
 505         {
 506                 success=run_();
 507         }
 508         catch(String s)
 509         {
 510                 err=s;
 511         }
 512         if(!success && !err.empty())
 513         {
 514                 get_canvas_view()->get_ui_interface()->error(err);
 515         }
 516         return success;
 517 }
 518
 519 bool
 520 StateBLine_Context::run_()
 521 {
 522         curr_duck=0;
 523         next_duck=0;
 524
 525         // Now we need to generate it
 526
 527         if(bline_point_list.empty())
 528         {
 529                 return false;
 530         }
 531         if(bline_point_list.size()<2)
 532         {
 533                 //get_canvas_view()->get_ui_interface()->error(_("You need at least two (2) points to create a BLine"));
 534                 return false;
 535         }
 536
 537         do
 538         {
 539
 540                 // Create the action group
 541                 synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New BLine"));
 542
 543                 std::vector<BLinePoint> new_list;
 544                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 545                 const synfig::TransformStack& transform(get_transform_stack());
 546
 547                 for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
 548                 {
 549                         BLinePoint bline_point((*iter)->get_value().get(BLinePoint()));
 550                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 551
 552                         bline_point.set_tangent1(
 553                                 transform.unperform(
 554                                         bline_point.get_tangent1()+bline_point.get_vertex()
 555                                 ) -new_vertex
 556                         );
 557
 558                         bline_point.set_tangent2(
 559                                 transform.unperform(
 560                                         bline_point.get_tangent2()+bline_point.get_vertex()
 561                                 ) -new_vertex
 562                         );
 563
 564                         bline_point.set_vertex(new_vertex);
 565
 566                         new_list.push_back(bline_point);
 567                 }
 568
 569                 ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
 570                 assert(value_node_bline);
 571
 572                 ValueNode_Const::Handle value_node_origin(ValueNode_Const::create(Vector()));
 573                 assert(value_node_origin);
 574
 575                 // Set the looping flag
 576                 value_node_bline->set_loop(loop_);
 577
 578                 // Add the BLine to the canvas
 579                 if(get_auto_export_flag() && !get_canvas_interface()->add_value_node(value_node_bline,get_id()))
 580                 {
 581                         //get_canvas_view()->get_ui_interface()->error(_("Unable to add value node"));
 582                         group.cancel();
 583                         increment_id();
 584                         throw String(_("Unable to add value node"));
 585                         return false;
 586                 }
 587
 588                 Layer::Handle layer;
 589
 590                 // we are temporarily using the layer to hold something
 591                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 592
 593                 if(layer)
 594                 {
 595                         if(depth<0)
 596                                 depth=layer->get_depth();
 597                         if(!canvas)
 598                                 canvas=layer->get_canvas();
 599                 }
 600                 else
 601                         depth=0;
 602
 603                 if(!canvas)
 604                         canvas=get_canvas_view()->get_canvas();
 605
 606                 value_node_bline->set_member_canvas(canvas);
 607
 608                 synfigapp::SelectionManager::LayerList layer_selection;
 609                 if (!getenv("SYNFIG_TOOLS_CLEAR_SELECTION"))
 610                         layer_selection = get_canvas_view()->get_selection_manager()->get_selected_layers();
 611
 612                 // count how many layers we're going to be creating
 613                 int layers_to_create = this->layers_to_create();
 614
 615                 ///////////////////////////////////////////////////////////////////////////
 616                 //   C U R V E   G R A D I E N T
 617                 ///////////////////////////////////////////////////////////////////////////
 618
 619                 if(get_layer_curve_gradient_flag())
 620                 {
 621                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 622
 623                         Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
 624                         if (!layer)
 625                         {
 626                                 group.cancel();
 627                                 throw String(_("Unable to create layer"));
 628                         }
 629                         layer_selection.push_back(layer);
 630                         layer->set_description(get_id()+_(" Gradient"));
 631                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 632
 633                         {
 634                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 635                                 assert(action);
 636
 637                                 action->set_param("canvas",get_canvas());
 638                                 action->set_param("canvas_interface",get_canvas_interface());
 639                                 action->set_param("layer",layer);
 640                                 if(!action->set_param("param",String("bline")))
 641                                         synfig::error("LayerParamConnect didn't like \"param\"");
 642                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 643                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 644
 645                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 646                                 {
 647                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 648                                         group.cancel();
 649                                         throw String(_("Unable to create Gradient layer"));
 650                                         return false;
 651                                 }
 652                         }
 653
 654                         // only link the curve gradient's origin parameter if the option is selected and we're creating more than one layer
 655                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 656                         {
 657                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 658                                 assert(action);
 659
 660                                 action->set_param("canvas",get_canvas());
 661                                 action->set_param("canvas_interface",get_canvas_interface());
 662                                 action->set_param("layer",layer);
 663                                 if(!action->set_param("param",String("origin")))
 664                                         synfig::error("LayerParamConnect didn't like \"param\"");
 665                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 666                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 667
 668                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 669                                 {
 670                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 671                                         group.cancel();
 672                                         throw String(_("Unable to create Gradient layer"));
 673                                         return false;
 674                                 }
 675                         }
 676                 }
 677
 678                 ///////////////////////////////////////////////////////////////////////////
 679                 //   P L A N T
 680                 ///////////////////////////////////////////////////////////////////////////
 681
 682                 if(get_layer_plant_flag())
 683                 {
 684                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 685
 686                         Layer::Handle layer(get_canvas_interface()->add_layer_to("plant",canvas,depth));
 687                         if (!layer)
 688                         {
 689                                 group.cancel();
 690                                 throw String(_("Unable to create layer"));
 691                         }
 692                         layer_selection.push_back(layer);
 693                         layer->set_description(get_id()+_(" Plant"));
 694                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 695
 696                         {
 697                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 698                                 assert(action);
 699
 700                                 action->set_param("canvas",get_canvas());
 701                                 action->set_param("canvas_interface",get_canvas_interface());
 702                                 action->set_param("layer",layer);
 703                                 if(!action->set_param("param",String("bline")))
 704                                         synfig::error("LayerParamConnect didn't like \"param\"");
 705                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 706                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 707
 708                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 709                                 {
 710                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 711                                         group.cancel();
 712                                         throw String(_("Unable to create Plant layer"));
 713                                         return false;
 714                                 }
 715                         }
 716
 717                         // only link the plant's origin parameter if the option is selected and we're creating more than one layer
 718                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 719                         {
 720                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 721                                 assert(action);
 722
 723                                 action->set_param("canvas",get_canvas());
 724                                 action->set_param("canvas_interface",get_canvas_interface());
 725                                 action->set_param("layer",layer);
 726                                 if(!action->set_param("param",String("origin")))
 727                                         synfig::error("LayerParamConnect didn't like \"param\"");
 728                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 729                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 730
 731                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 732                                 {
 733                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 734                                         group.cancel();
 735                                         throw String(_("Unable to create Plant layer"));
 736                                         return false;
 737                                 }
 738                         }
 739                 }
 740
 741                 ///////////////////////////////////////////////////////////////////////////
 742                 //   R E G I O N
 743                 ///////////////////////////////////////////////////////////////////////////
 744
 745                 if(get_layer_region_flag())
 746                 {
 747                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 748
 749                         Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
 750                         if (!layer)
 751                         {
 752                                 group.cancel();
 753                                 throw String(_("Unable to create layer"));
 754                         }
 755                         layer_selection.push_back(layer);
 756                         layer->set_description(get_id()+_(" Region"));
 757                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 758
 759                         if(get_feather())
 760                         {
 761                                 layer->set_param("feather",get_feather());
 762                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 763                         }
 764
 765                         if(get_layer_outline_flag())
 766                                 layer->set_param("color",synfigapp::Main::get_background_color());
 767
 768                         // I don't know if it's safe to reuse the same layer_param_connect action, so I'm
 769                         // using 2 separate ones.
 770                         {
 771                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 772                                 assert(action);
 773
 774                                 action->set_param("canvas",get_canvas());
 775                                 action->set_param("canvas_interface",get_canvas_interface());
 776                                 action->set_param("layer",layer);
 777                                 if(!action->set_param("param",String("bline")))
 778                                         synfig::error("LayerParamConnect didn't like \"param\"");
 779                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 780                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 781
 782                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 783                                 {
 784                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 785                                         group.cancel();
 786                                         throw String(_("Unable to create Region layer"));
 787                                         return false;
 788                                 }
 789                         }
 790
 791                         // only link the region's origin parameter if the option is selected and we're creating more than one layer
 792                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 793                         {
 794                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 795                                 assert(action);
 796
 797                                 action->set_param("canvas",get_canvas());
 798                                 action->set_param("canvas_interface",get_canvas_interface());
 799                                 action->set_param("layer",layer);
 800                                 if(!action->set_param("param",String("origin")))
 801                                         synfig::error("LayerParamConnect didn't like \"param\"");
 802                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 803                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 804
 805                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 806                                 {
 807                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 808                                         group.cancel();
 809                                         throw String(_("Unable to create Region layer"));
 810                                         return false;
 811                                 }
 812                         }
 813                 }
 814
 815                 ///////////////////////////////////////////////////////////////////////////
 816                 //   O U T L I N E
 817                 ///////////////////////////////////////////////////////////////////////////
 818
 819                 if(get_layer_outline_flag())
 820                 {
 821                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 822
 823                         Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
 824                         if (!layer)
 825                         {
 826                                 group.cancel();
 827                                 throw String(_("Unable to create layer"));
 828                         }
 829                         layer_selection.push_back(layer);
 830                         layer->set_description(get_id()+_(" Outline"));
 831                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 832                         if(get_feather())
 833                         {
 834                                 layer->set_param("feather",get_feather());
 835                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 836                         }
 837
 838                         {
 839                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 840                                 assert(action);
 841
 842                                 action->set_param("canvas",get_canvas());
 843                                 action->set_param("canvas_interface",get_canvas_interface());
 844                                 action->set_param("layer",layer);
 845                                 if(!action->set_param("param",String("bline")))
 846                                         synfig::error("LayerParamConnect didn't like \"param\"");
 847                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 848                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 849
 850                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 851                                 {
 852                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 853                                         group.cancel();
 854                                         throw String(_("Unable to create Outline layer"));
 855                                         return false;
 856                                 }
 857                         }
 858
 859                         // only link the outline's origin parameter if the option is selected and we're creating more than one layer
 860                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 861                         {
 862                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 863                                 assert(action);
 864
 865                                 action->set_param("canvas",get_canvas());
 866                                 action->set_param("canvas_interface",get_canvas_interface());
 867                                 action->set_param("layer",layer);
 868                                 if(!action->set_param("param",String("origin")))
 869                                         synfig::error("LayerParamConnect didn't like \"param\"");
 870                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 871                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 872
 873                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 874                                 {
 875                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 876                                         group.cancel();
 877                                         throw String(_("Unable to create Outline layer"));
 878                                         return false;
 879                                 }
 880                         }
 881                 }
 882
 883                 egress_on_selection_change=false;
 884                 get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 885                 get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
 886                 egress_on_selection_change=true;
 887
 888                 //if(finish_bline_dialog.get_region_flag() || finish_bline_dialog.get_bline_flag())
 889                 //      get_canvas_interface()->signal_dirty_preview()();
 890
 891         } while(0);
 892
 893         reset();
 894         increment_id();
 895         return true;
 896 }
 897
 898 Smach::event_result
 899 StateBLine_Context::event_mouse_motion_handler(const Smach::event& x)
 900 {
 901         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 902
 903         if(curr_duck)
 904         {
 905                 //synfig::info("Moved Duck");
 906                 Point p(get_work_area()->snap_point_to_grid(event.pos));
 907                 curr_duck->set_trans_point(p);
 908                 if(next_duck)
 909                         next_duck->set_trans_point(p);
 910                 get_work_area()->queue_draw();
 911                 return Smach::RESULT_ACCEPT;
 912         }
 913
 914         return Smach::RESULT_OK;
 915 }
 916
 917 Smach::event_result
 918 StateBLine_Context::event_mouse_release_handler(const Smach::event& /*x*/)
 919 {
 920         if(curr_duck)
 921         {
 922                 //synfig::info("Released current duck");
 923                 curr_duck->signal_edited()(curr_duck->get_point());
 924                 if(next_duck)
 925                 {
 926                         //synfig::info("grabbing next duck");
 927                         curr_duck=next_duck;
 928                         next_duck=0;
 929                 }
 930                 return Smach::RESULT_ACCEPT;
 931         }
 932         return Smach::RESULT_OK;
 933 }
 934
 935 Smach::event_result
 936 StateBLine_Context::event_mouse_click_handler(const Smach::event& x)
 937 {
 938         // synfig::info("STATE BLINE: Received mouse button down Event");
 939         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 940         switch(event.button)
 941         {
 942         case BUTTON_LEFT:
 943                 {
 944                         // If we are already looped up, then don't try to add anything else
 945                         if(loop_)
 946                                 return Smach::RESULT_OK;
 947
 948                         BLinePoint bline_point;
 949
 950                         bline_point.set_vertex(get_work_area()->snap_point_to_grid(event.pos));
 951                         //bline_point.set_width(synfigapp::Main::get_bline_width());
 952                         bline_point.set_width(1.0f);
 953                         bline_point.set_origin(0.5f);
 954                         bline_point.set_split_tangent_flag(false);
 955                         bline_point.set_tangent1(Vector(0,0));
 956
 957                         // set the tangent
 958                         /*
 959                         if(bline_point_list.empty())
 960                         {
 961                                 bline_point.set_tangent1(Vector(1,1));
 962                         }
 963                         else
 964                         {
 965                                 const Vector t(event.pos-bline_point_list.back()->get_value().get(BLinePoint()).get_vertex());
 966                                 bline_point.set_tangent1(t);
 967                         }
 968
 969                         if(bline_point_list.size()>1)
 970                         {
 971                                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 972                                 iter=bline_point_list.end();
 973                                 iter--;iter--;
 974                                 BLinePoint prev(bline_point_list.back()->get_value().get(BLinePoint()));
 975                                 prev.set_tangent1(event.pos-(*iter)->get_value().get(BLinePoint()).get_vertex());
 976                                 bline_point_list.back()->set_value(prev);
 977                         };
 978                         */
 979
 980                         bline_point_list.push_back(ValueNode_Const::create(bline_point));
 981
 982                         refresh_ducks();
 983                         return Smach::RESULT_ACCEPT;
 984                 }
 985
 986         default:
 987                 return Smach::RESULT_OK;
 988         }
 989 }
 990
 991 void
 992 StateBLine_Context::refresh_ducks(bool button_down)
 993 {
 994         get_work_area()->clear_ducks();
 995         get_work_area()->queue_draw();
 996
 997         if(bline_point_list.empty())
 998                 return;
 999
1000         list<ValueNode_Const::Handle>::iterator iter;
1001
1002         handle<WorkArea::Bezier> bezier;
1003         handle<WorkArea::Duck> duck,tduck;
1004         BLinePoint bline_point;
1005
1006         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1007         {
1008                 ValueNode_Const::Handle value_node(*iter);
1009                 bline_point=(value_node->get_value().get(BLinePoint()));
1010                 assert(value_node);
1011
1012
1013                 // First add the duck associated with this vertex
1014                 duck=new WorkArea::Duck(bline_point.get_vertex());
1015                 duck->set_editable(true);
1016 #ifdef DISTINGUISH_FIRST_DUCK
1017                 if (iter!=bline_point_list.begin())
1018                         duck->set_type(Duck::TYPE_VERTEX);
1019 #else
1020                 duck->set_type(Duck::TYPE_VERTEX);
1021 #endif
1022                 duck->set_name(strprintf("%x-vertex",value_node.get()));
1023                 duck->signal_edited().connect(
1024                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),value_node)
1025                 );
1026                 duck->signal_user_click(2).connect(
1027                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),value_node)
1028                 );
1029                 duck->set_guid(value_node->get_guid()^synfig::GUID::hasher(0));
1030
1031                 get_work_area()->add_duck(duck);
1032
1033                 // Add the tangent1 duck
1034                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1035                 tduck->set_editable(true);
1036                 tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1037                 tduck->set_origin(duck);
1038                 tduck->set_scalar(-0.33333333333333333);
1039                 tduck->set_tangent(true);
1040                 tduck->set_guid(value_node->get_guid()^synfig::GUID::hasher(3));
1041                 tduck->signal_edited().connect(
1042                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1043                 );
1044                 tduck->signal_user_click(2).connect(
1045                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1046                 );
1047
1048                 // See if we need to add that duck to the previous bezier
1049                 if(bezier)
1050                 {
1051                         get_work_area()->add_duck(tduck);
1052                         bezier->p2=duck;
1053                         bezier->c2=tduck;
1054
1055                         bezier->signal_user_click(2).connect(
1056                                 sigc::bind(
1057                                         sigc::mem_fun(
1058                                                 *this,
1059                                                 &studio::StateBLine_Context::popup_bezier_menu
1060                                         ),
1061                                         value_node
1062                                 )
1063                         );
1064
1065                         //get_work_area()->add_duck(bezier->c1);
1066                         //get_work_area()->add_duck(bezier->c2);
1067                         get_work_area()->add_bezier(bezier);
1068
1069                         bezier=0;
1070                 }
1071
1072                 // Now we see if we need to create a bezier
1073                 list<ValueNode_Const::Handle>::iterator next(iter);
1074                 next++;
1075
1076                 // If our next iterator is the end, then we don't need
1077                 // to add a bezier.
1078                 //if(next==bline_point_list.end() && !loop_)
1079                 //      continue;
1080
1081                 bezier=new WorkArea::Bezier();
1082
1083                 // Add the tangent2 duck
1084                 tduck=new WorkArea::Duck(bline_point.get_tangent2());
1085                 tduck->set_editable(true);
1086                 tduck->set_origin(duck);
1087                 tduck->set_scalar(0.33333333333333333);
1088                 tduck->set_tangent(true);
1089                 if(bline_point.get_split_tangent_flag())
1090                 {
1091                         tduck->set_name(strprintf("%x-tangent2",value_node.get()));
1092                         tduck->signal_edited().connect(
1093                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent2_change),value_node)
1094                         );
1095                 }
1096                 else
1097                 {
1098                         tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1099                         tduck->signal_edited().connect(
1100                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1101                         );
1102                 }
1103                 tduck->set_guid(value_node->get_guid()^synfig::GUID::hasher(4));
1104                 tduck->signal_user_click(2).connect(
1105                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1106                 );
1107
1108                 // Setup the next bezier
1109                 bezier->p1=duck;
1110                 bezier->c1=tduck;
1111
1112                 get_work_area()->add_duck(tduck);
1113                 curr_duck=tduck;
1114         }
1115
1116         // Add the loop, if requested
1117         if(bezier && loop_)
1118         {
1119                 curr_duck=0;
1120                 BLinePoint bline_point(bline_point_list.front()->get_value().get(BLinePoint()));
1121
1122                 duck=new WorkArea::Duck(bline_point.get_vertex());
1123                 duck->set_editable(true);
1124 #ifndef DISTINGUISH_FIRST_DUCK
1125                 duck->set_type(Duck::TYPE_VERTEX);
1126 #endif
1127                 duck->set_name(strprintf("%x-vertex",bline_point_list.front().get()));
1128                 duck->signal_edited().connect(
1129                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),bline_point_list.front())
1130                 );
1131                 duck->signal_user_click(2).connect(
1132                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),bline_point_list.front())
1133                 );
1134                 get_work_area()->add_duck(duck);
1135
1136                 // Add the tangent1 duck
1137                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1138                 tduck->set_editable(true);
1139                 tduck->set_name(strprintf("%x-tangent1",bline_point_list.front().get()));
1140                 tduck->set_origin(duck);
1141                 tduck->set_scalar(-0.33333333333333333);
1142                 tduck->set_tangent(true);
1143                 tduck->signal_edited().connect(
1144                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),bline_point_list.front())
1145                 );
1146                 tduck->signal_user_click(2).connect(
1147                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),bline_point_list.front())
1148                 );
1149                 get_work_area()->add_duck(tduck);
1150
1151                 bezier->p2=duck;
1152                 bezier->c2=tduck;
1153
1154                 bezier->signal_user_click(2).connect(
1155                         sigc::bind(
1156                                 sigc::mem_fun(
1157                                         *this,
1158                                         &studio::StateBLine_Context::popup_bezier_menu
1159                                 ),
1160                                 bline_point_list.front()
1161                         )
1162                 );
1163
1164                 //get_work_area()->add_duck(bezier->c1);
1165                 get_work_area()->add_bezier(bezier);
1166         }
1167         if(bezier && !loop_)
1168         {
1169                 duck=new WorkArea::Duck(bline_point.get_vertex());
1170                 duck->set_ignore(true);
1171                 duck->set_name("temp");
1172
1173                 // Add the tangent1 duck
1174                 tduck=new WorkArea::Duck(Vector(0,0));
1175                 tduck->set_ignore(true);
1176                 tduck->set_name("ttemp");
1177                 tduck->set_origin(duck);
1178                 tduck->set_scalar(-0.33333333333333333);
1179
1180                 tduck->set_tangent(true);
1181                 bezier->p2=duck;
1182                 bezier->c2=tduck;
1183
1184                 get_work_area()->add_duck(bezier->p2);
1185                 //get_work_area()->add_duck(bezier->c2);
1186                 get_work_area()->add_bezier(bezier);
1187
1188                 duck->set_guid(synfig::GUID());
1189                 tduck->set_guid(synfig::GUID());
1190
1191                 next_duck=duck;
1192         }
1193
1194         if(!button_down)
1195         {
1196                 if(curr_duck)
1197                 {
1198                         if(next_duck)
1199                         {
1200                                 curr_duck=next_duck;
1201                                 next_duck=0;
1202                         }
1203                 }
1204         }
1205         get_work_area()->queue_draw();
1206 }
1207
1208
1209 bool
1210 StateBLine_Context::on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1211 {
1212         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1213         bline_point.set_vertex(point);
1214         value_node->set_value(bline_point);
1215         //refresh_ducks();
1216         return true;
1217 }
1218
1219 bool
1220 StateBLine_Context::on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1221 {
1222         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1223         bline_point.set_tangent1(point);
1224         value_node->set_value(bline_point);
1225         //refresh_ducks();
1226         return true;
1227 }
1228
1229 bool
1230 StateBLine_Context::on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1231 {
1232         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1233         bline_point.set_tangent2(point);
1234         value_node->set_value(bline_point);
1235         //refresh_ducks();
1236         return true;
1237 }
1238
1239 void
1240 StateBLine_Context::loop_bline()
1241 {
1242         loop_=true;
1243
1244         refresh_ducks(false);
1245 }
1246
1247 void
1248 StateBLine_Context::unloop_bline()
1249 {
1250         loop_=false;
1251
1252         refresh_ducks(false);
1253 }
1254
1255 void
1256 StateBLine_Context::popup_vertex_menu(synfig::ValueNode_Const::Handle value_node)
1257 {
1258         menu.items().clear();
1259
1260         if(loop_)
1261         {
1262                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Unloop BLine"),
1263                                 sigc::mem_fun(*this,&studio::StateBLine_Context::unloop_bline)
1264                 ));
1265         } else {
1266                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Loop BLine"),
1267                                 sigc::mem_fun(*this,&studio::StateBLine_Context::loop_bline)
1268                 ));
1269         }
1270
1271         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Delete Vertex"),
1272                 sigc::bind(
1273                         sigc::mem_fun(*this,&studio::StateBLine_Context::bline_delete_vertex),
1274                         value_node
1275                 )
1276         ));
1277
1278         menu.popup(0,0);
1279 }
1280
1281 void
1282 StateBLine_Context::popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node)
1283 {
1284         menu.items().clear();
1285
1286         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Insert Vertex"),
1287                 sigc::bind(
1288                         sigc::bind(
1289                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_insert_vertex),
1290                                 location
1291                         ),
1292                         value_node
1293                 )
1294         ));
1295
1296         menu.popup(0,0);
1297 }
1298
1299 void
1300 StateBLine_Context::bline_insert_vertex(synfig::ValueNode_Const::Handle value_node, float origin)
1301 {
1302         list<ValueNode_Const::Handle>::iterator iter;
1303
1304         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1305                 if(*iter==value_node)
1306                 {
1307                         BLinePoint bline_point;
1308                         BLinePoint next_bline_point((*iter)->get_value().get(BLinePoint()));
1309                         BLinePoint prev_bline_point;
1310
1311                         list<ValueNode_Const::Handle>::iterator prev(iter);
1312                         if(iter==bline_point_list.begin())
1313                         {
1314                                 assert(loop_);
1315                                 prev = bline_point_list.end();
1316                         }
1317                         prev--;
1318
1319                         prev_bline_point=(*prev)->get_value().get(BLinePoint());
1320
1321                         etl::hermite<Vector> curve(prev_bline_point.get_vertex(),
1322                                                                            next_bline_point.get_vertex(),
1323                                                                            prev_bline_point.get_tangent2(),
1324                                                                            next_bline_point.get_tangent1());
1325                         etl::derivative< etl::hermite<Vector> > deriv(curve);
1326
1327                         bline_point.set_vertex(curve(origin));
1328                         bline_point.set_width((next_bline_point.get_width()-prev_bline_point.get_width())*origin+prev_bline_point.get_width());
1329                         bline_point.set_tangent1(deriv(origin)*std::min(1.0f-origin,origin));
1330                         bline_point.set_tangent2(bline_point.get_tangent1());
1331                         bline_point.set_split_tangent_flag(false);
1332                         bline_point.set_origin(origin);
1333
1334 /*
1335                         bline_point.set_vertex((next_bline_point.get_vertex()+prev_bline_point.get_vertex())*0.5);
1336                         bline_point.set_width((next_bline_point.get_width()+prev_bline_point.get_width())*0.5);
1337                         bline_point.set_origin(origin);
1338                         bline_point.set_split_tangent_flag(false);
1339                         bline_point.set_tangent1((next_bline_point.get_vertex()-prev_bline_point.get_vertex())*0.5);
1340 */
1341
1342                         bline_point_list.insert(iter,ValueNode_Const::create(bline_point));
1343                         break;
1344                 }
1345
1346         if(iter==bline_point_list.end())
1347         {
1348                 get_canvas_view()->get_ui_interface()->error(_("Unable to find where to insert vertex, internal error, please report this bug"));
1349         }
1350
1351         refresh_ducks(false);
1352 }
1353
1354 void
1355 StateBLine_Context::bline_delete_vertex(synfig::ValueNode_Const::Handle value_node)
1356 {
1357         list<ValueNode_Const::Handle>::iterator iter;
1358
1359         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1360                 if(*iter==value_node)
1361                 {
1362                         bline_point_list.erase(iter);
1363                         break;
1364                 }
1365         if(iter==bline_point_list.end())
1366         {
1367                 get_canvas_view()->get_ui_interface()->error(_("Unable to remove vertex, internal error, please report this bug"));
1368         }
1369
1370         refresh_ducks(false);
1371 }
1372
1373 void
1374 StateBLine_Context::popup_handle_menu(synfig::ValueNode_Const::Handle value_node)
1375 {
1376         menu.items().clear();
1377
1378         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1379
1380         if(bline_point.get_split_tangent_flag())
1381                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Merge Tangents"),
1382                         sigc::bind(
1383                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_attach_handle),
1384                                 value_node
1385                         )
1386                 ));
1387         else
1388                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Split Tangents"),
1389                         sigc::bind(
1390                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_detach_handle),
1391                                 value_node
1392                         )
1393                 ));
1394
1395         menu.popup(0,0);
1396 }
1397
1398 void
1399 StateBLine_Context::bline_detach_handle(synfig::ValueNode_Const::Handle value_node)
1400 {
1401         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1402         bline_point.set_split_tangent_flag(true);
1403         bline_point.set_tangent2(bline_point.get_tangent1());
1404         value_node->set_value(bline_point);
1405         refresh_ducks(false);
1406 }
1407
1408 void
1409 StateBLine_Context::bline_attach_handle(synfig::ValueNode_Const::Handle value_node)
1410 {
1411         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1412         bline_point.set_tangent1((bline_point.get_tangent1()+bline_point.get_tangent2())*0.5);
1413         bline_point.set_split_tangent_flag(false);
1414         value_node->set_value(bline_point);
1415         refresh_ducks(false);
1416 }