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