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