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