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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_bline.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include <gtkmm/dialog.h>
  34 #include <gtkmm/entry.h>
  35
  36 #include <synfig/valuenode_dynamiclist.h>
  37
  38 #include "state_bline.h"
  39 #include "canvasview.h"
  40 #include "workarea.h"
  41 #include "app.h"
  42 #include <synfig/valuenode_bline.h>
  43 #include <ETL/hermite>
  44 #include <ETL/calculus>
  45 #include <utility>
  46 #include "event_mouse.h"
  47 #include "event_layerclick.h"
  48 #include "toolbox.h"
  49 #include "dialog_tooloptions.h"
  50 #include <gtkmm/spinbutton.h>
  51 #include <synfig/transform.h>
  52 #include <synfigapp/main.h>
  53
  54 #include "general.h"
  55
  56 #endif
  57
  58 /* === U S I N G =========================================================== */
  59
  60 using namespace std;
  61 using namespace etl;
  62 using namespace synfig;
  63 using namespace studio;
  64
  65 /* === M A C R O S ========================================================= */
  66
  67 // if defined, show the first duck as green while drawing
  68 //#define DISTINGUISH_FIRST_DUCK
  69
  70 /* === G L O B A L S ======================================================= */
  71
  72 StateBLine studio::state_bline;
  73
  74 /* === C L A S S E S & S T R U C T S ======================================= */
  75
  76 class studio::StateBLine_Context : public sigc::trackable
  77 {
  78         etl::handle<CanvasView> canvas_view_;
  79         CanvasView::IsWorking is_working;
  80
  81         bool prev_table_status;
  82         bool loop_;
  83         bool prev_workarea_layer_status_;
  84
  85         int depth;
  86         Canvas::Handle canvas;
  87
  88         Gtk::Menu menu;
  89
  90         Duckmatic::Push duckmatic_push;
  91
  92         etl::handle<Duck> curr_duck;
  93
  94         etl::handle<Duck> next_duck;
  95
  96         std::list<synfig::ValueNode_Const::Handle> bline_point_list;
  97         synfigapp::Settings& settings;
  98
  99         bool on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 100         bool on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 101         bool on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 102
 103
 104         void popup_handle_menu(synfig::ValueNode_Const::Handle value_node);
 105         void popup_vertex_menu(synfig::ValueNode_Const::Handle value_node);
 106         void popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node);
 107
 108         void bline_detach_handle(synfig::ValueNode_Const::Handle value_node);
 109         void bline_attach_handle(synfig::ValueNode_Const::Handle value_node);
 110         void bline_delete_vertex(synfig::ValueNode_Const::Handle value_node);
 111         void bline_insert_vertex(synfig::ValueNode_Const::Handle value_node,float origin=0.5);
 112         void loop_bline();
 113         void unloop_bline();
 114
 115         void refresh_ducks(bool x=true);
 116
 117         Gtk::Table options_table;
 118         Gtk::Entry entry_id;
 119         Gtk::CheckButton checkbutton_layer_region;
 120         Gtk::CheckButton checkbutton_layer_outline;
 121         Gtk::CheckButton checkbutton_layer_curve_gradient;
 122         Gtk::CheckButton checkbutton_layer_plant;
 123         Gtk::CheckButton checkbutton_layer_link_offsets;
 124         Gtk::CheckButton checkbutton_auto_export;
 125         Gtk::Button button_make;
 126         Gtk::Button button_clear;
 127         Gtk::Adjustment  adj_feather;
 128         Gtk::SpinButton  spin_feather;
 129
 130
 131
 132 public:
 133
 134         int layers_to_create()const
 135         {
 136                 return
 137                         get_layer_region_flag() +
 138                         get_layer_outline_flag() +
 139                         get_layer_curve_gradient_flag() +
 140                         get_layer_plant_flag();
 141         }
 142
 143         void sanity_check()
 144         {
 145                 if(layers_to_create()==0)
 146                         set_layer_region_flag(true);
 147         }
 148
 149         bool get_auto_export_flag()const { return checkbutton_auto_export.get_active(); }
 150         void set_auto_export_flag(bool x) { return checkbutton_auto_export.set_active(x); }
 151
 152         bool get_layer_region_flag()const { return checkbutton_layer_region.get_active(); }
 153         void set_layer_region_flag(bool x) { return checkbutton_layer_region.set_active(x); }
 154
 155         bool get_layer_outline_flag()const { return checkbutton_layer_outline.get_active(); }
 156         void set_layer_outline_flag(bool x) { return checkbutton_layer_outline.set_active(x); }
 157
 158         bool get_layer_curve_gradient_flag()const { return checkbutton_layer_curve_gradient.get_active(); }
 159         void set_layer_curve_gradient_flag(bool x) { return checkbutton_layer_curve_gradient.set_active(x); }
 160
 161         bool get_layer_plant_flag()const { return checkbutton_layer_plant.get_active(); }
 162         void set_layer_plant_flag(bool x) { return checkbutton_layer_plant.set_active(x); }
 163
 164         bool get_layer_link_offsets_flag()const { return checkbutton_layer_link_offsets.get_active(); }
 165         void set_layer_link_offsets_flag(bool x) { return checkbutton_layer_link_offsets.set_active(x); }
 166
 167         Real get_feather() const { return adj_feather.get_value(); }
 168         void set_feather(Real x) { return adj_feather.set_value(x); }
 169         synfig::String get_id()const { return entry_id.get_text(); }
 170         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 171
 172         Smach::event_result event_stop_handler(const Smach::event& x);
 173
 174         Smach::event_result event_refresh_handler(const Smach::event& x);
 175
 176         Smach::event_result event_mouse_click_handler(const Smach::event& x);
 177         Smach::event_result event_mouse_release_handler(const Smach::event& x);
 178         Smach::event_result event_mouse_motion_handler(const Smach::event& x);
 179         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 180
 181         Smach::event_result event_hijack(const Smach::event& /*x*/) { return Smach::RESULT_ACCEPT; }
 182
 183         void refresh_tool_options();
 184
 185         StateBLine_Context(CanvasView* canvas_view);
 186
 187         ~StateBLine_Context();
 188
 189         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 190         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 191         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 192         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 193         const synfig::TransformStack& get_transform_stack()const { return canvas_view_->get_curr_transform_stack(); }
 194
 195         void load_settings();
 196         void save_settings();
 197         void reset();
 198         void increment_id();
 199         //void on_user_click(synfig::Point point);
 200
 201         bool run_();
 202         bool run();
 203
 204         bool egress_on_selection_change;
 205         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
 206         {
 207                 if(egress_on_selection_change)
 208                         throw Smach::egress_exception();
 209                 return Smach::RESULT_OK;
 210         }
 211
 212 };      // END of class StateBLine_Context
 213
 214
 215 /* === M E T H O D S ======================================================= */
 216
 217 StateBLine::StateBLine():
 218         Smach::state<StateBLine_Context>("bline")
 219 {
 220         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StateBLine_Context::event_layer_selection_changed_handler));
 221         insert(event_def(EVENT_STOP,&StateBLine_Context::event_stop_handler));
 222         insert(event_def(EVENT_REFRESH,&StateBLine_Context::event_refresh_handler));
 223         insert(event_def(EVENT_REFRESH_DUCKS,&StateBLine_Context::event_hijack));
 224         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateBLine_Context::event_mouse_click_handler));
 225         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateBLine_Context::event_mouse_release_handler));
 226         insert(event_def(EVENT_WORKAREA_MOUSE_MOTION,&StateBLine_Context::event_mouse_motion_handler));
 227         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateBLine_Context::event_mouse_motion_handler));
 228         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateBLine_Context::event_refresh_tool_options));
 229 }
 230
 231 StateBLine::~StateBLine()
 232 {
 233 }
 234
 235 void
 236 StateBLine_Context::load_settings()
 237 {
 238         String value;
 239
 240         if(settings.get_value("bline.layer_region",value) && value=="0")
 241                 set_layer_region_flag(false);
 242         else
 243                 set_layer_region_flag(true);
 244
 245         if(settings.get_value("bline.layer_outline",value) && value=="0")
 246                 set_layer_outline_flag(false);
 247         else
 248                 set_layer_outline_flag(true);
 249
 250         if(settings.get_value("bline.layer_curve_gradient",value) && value=="1")
 251                 set_layer_curve_gradient_flag(true);
 252         else
 253                 set_layer_curve_gradient_flag(false);
 254
 255         if(settings.get_value("bline.layer_plant",value) && value=="1")
 256                 set_layer_plant_flag(true);
 257         else
 258                 set_layer_plant_flag(false);
 259
 260         if(settings.get_value("bline.layer_link_offsets",value) && value=="0")
 261                 set_layer_link_offsets_flag(false);
 262         else
 263                 set_layer_link_offsets_flag(true);
 264
 265         if(settings.get_value("bline.auto_export",value) && value=="1")
 266                 set_auto_export_flag(true);
 267         else
 268                 set_auto_export_flag(false);
 269
 270         if(settings.get_value("bline.id",value))
 271                 set_id(value);
 272         else
 273                 set_id("NewBLine");
 274
 275         if(settings.get_value("bline.feather",value))
 276         {
 277                 Real n = atof(value.c_str());
 278                 set_feather(n);
 279         }
 280
 281         sanity_check();
 282 }
 283
 284 void
 285 StateBLine_Context::save_settings()
 286 {
 287         sanity_check();
 288         settings.set_value("bline.layer_outline",get_layer_outline_flag()?"1":"0");
 289         settings.set_value("bline.layer_region",get_layer_region_flag()?"1":"0");
 290         settings.set_value("bline.layer_curve_gradient",get_layer_curve_gradient_flag()?"1":"0");
 291         settings.set_value("bline.layer_plant",get_layer_plant_flag()?"1":"0");
 292         settings.set_value("bline.layer_link_offsets",get_layer_link_offsets_flag()?"1":"0");
 293         settings.set_value("bline.auto_export",get_auto_export_flag()?"1":"0");
 294         settings.set_value("bline.id",get_id().c_str());
 295         settings.set_value("bline.feather",strprintf("%f",get_feather()));
 296 }
 297
 298 void
 299 StateBLine_Context::reset()
 300 {
 301         loop_=false;
 302         bline_point_list.clear();
 303         refresh_ducks();
 304 }
 305
 306 void
 307 StateBLine_Context::increment_id()
 308 {
 309         String id(get_id());
 310         int number=1;
 311         int digits=0;
 312
 313         if(id.empty())
 314                 id="NewBLine";
 315
 316         // If there is a number
 317         // already at the end of the
 318         // id, then remove it.
 319         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 320         {
 321                 // figure out how many digits it is
 322                 for (digits = 0;
 323                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 324                          digits++)
 325                         ;
 326
 327                 String str_number;
 328                 str_number=String(id,id.size()-digits,id.size());
 329                 id=String(id,0,id.size()-digits);
 330                 synfig::info("---------------- \"%s\"",str_number.c_str());
 331
 332                 number=atoi(str_number.c_str());
 333         }
 334         else
 335         {
 336                 number=1;
 337                 digits=3;
 338         }
 339
 340         number++;
 341
 342         // Add the number back onto the id
 343         {
 344                 const String format(strprintf("%%0%dd",digits));
 345                 id+=strprintf(format.c_str(),number);
 346         }
 347
 348         // Set the ID
 349         set_id(id);
 350 }
 351
 352
 353 StateBLine_Context::StateBLine_Context(CanvasView* canvas_view):
 354         canvas_view_(canvas_view),
 355         is_working(*canvas_view),
 356         loop_(false),
 357         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 358         duckmatic_push(get_work_area()),
 359         settings(synfigapp::Main::get_selected_input_device()->settings()),
 360         entry_id(),
 361         checkbutton_layer_region(_("Fill")),
 362         checkbutton_layer_outline(_("Outline")),
 363         checkbutton_layer_curve_gradient(_("Gradient")),
 364         checkbutton_layer_plant(_("Plant")),
 365         checkbutton_layer_link_offsets(_("Link Offsets")),
 366         checkbutton_auto_export(_("Auto Export")),
 367         button_make(_("Make")),
 368         button_clear(_("Clear")),
 369         adj_feather(0,0,10000,0.01,0.1),
 370         spin_feather(adj_feather,0.01,4)
 371 {
 372         depth=-1;
 373         egress_on_selection_change=true;
 374         load_settings();
 375
 376         // Set up the tool options dialog
 377         //options_table.attach(*manage(new Gtk::Label(_("BLine Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 378         options_table.attach(entry_id,                                                          0, 2,  1,  2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 379         options_table.attach(checkbutton_layer_outline,                         0, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 380         options_table.attach(checkbutton_layer_region,                          0, 2,  3,  4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 381         options_table.attach(checkbutton_layer_plant,                           0, 2,  4,  5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 382         options_table.attach(checkbutton_layer_curve_gradient,          0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 383         options_table.attach(checkbutton_layer_link_offsets,            0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 384         options_table.attach(checkbutton_auto_export,                           0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 385         options_table.attach(*manage(new Gtk::Label(_("Feather"))), 0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 386         options_table.attach(spin_feather,                                                      1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 387         //options_table.attach(button_make, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 388         //button_make.signal_pressed().connect(sigc::mem_fun(*this,&StateBLine_Context::run));
 389         options_table.show_all();
 390         refresh_tool_options();
 391         App::dialog_tool_options->present();
 392
 393         // Turn off layer clicking
 394         get_work_area()->set_allow_layer_clicks(false);
 395
 396         // clear out the ducks
 397         get_work_area()->clear_ducks();
 398
 399         // Refresh the work area
 400         get_work_area()->queue_draw();
 401
 402         // Hide the tables if they are showing
 403         prev_table_status=get_canvas_view()->tables_are_visible();
 404         if(prev_table_status)get_canvas_view()->hide_tables();
 405
 406         // Disable the time bar
 407         get_canvas_view()->set_sensitive_timebar(false);
 408
 409         // Connect a signal
 410         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateBLine_Context::on_user_click));
 411         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 412
 413         App::toolbox->refresh();
 414 }
 415
 416 void
 417 StateBLine_Context::refresh_tool_options()
 418 {
 419         App::dialog_tool_options->clear();
 420         App::dialog_tool_options->set_widget(options_table);
 421         App::dialog_tool_options->set_local_name(_("BLine Tool"));
 422         App::dialog_tool_options->set_name("bline");
 423
 424         App::dialog_tool_options->add_button(
 425                 Gtk::StockID("gtk-execute"),
 426                 _("Make BLine and/or Region")
 427         )->signal_clicked().connect(
 428                 sigc::hide_return(sigc::mem_fun(
 429                         *this,
 430                         &StateBLine_Context::run
 431                 ))
 432         );
 433
 434         App::dialog_tool_options->add_button(
 435                 Gtk::StockID("gtk-clear"),
 436                 _("Clear current BLine")
 437         )->signal_clicked().connect(
 438                 sigc::mem_fun(
 439                         *this,
 440                         &StateBLine_Context::reset
 441                 )
 442         );
 443 }
 444
 445 Smach::event_result
 446 StateBLine_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 447 {
 448         refresh_tool_options();
 449         return Smach::RESULT_ACCEPT;
 450 }
 451
 452 StateBLine_Context::~StateBLine_Context()
 453 {
 454         run();
 455
 456         save_settings();
 457         App::dialog_tool_options->clear();
 458
 459         get_canvas_view()->work_area->reset_cursor();
 460
 461         // Restore layer clicking
 462         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 463
 464         // Enable the time bar
 465         get_canvas_view()->set_sensitive_timebar(true);
 466
 467         // Bring back the tables if they were out before
 468         if(prev_table_status)get_canvas_view()->show_tables();
 469
 470 //      get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
 471
 472         // Refresh the work area
 473         get_work_area()->queue_draw();
 474
 475         App::toolbox->refresh();
 476 }
 477
 478 Smach::event_result
 479 StateBLine_Context::event_stop_handler(const Smach::event& /*x*/)
 480 {
 481         synfig::info("STATE RotoBLine: Received Stop Event");
 482 //      run();
 483         reset();
 484 //      throw Smach::egress_exception();
 485 //      get_canvas_view()->get_smach().pop_state();
 486         return Smach::RESULT_ACCEPT;
 487 }
 488
 489 Smach::event_result
 490 StateBLine_Context::event_refresh_handler(const Smach::event& /*x*/)
 491 {
 492         synfig::info("STATE RotoBLine: Received Refresh Event");
 493         refresh_ducks();
 494         return Smach::RESULT_ACCEPT;
 495 }
 496
 497 bool
 498 StateBLine_Context::run()
 499 {
 500         sanity_check();
 501
 502         String err;
 503         bool success(false);
 504         for(int i=5;i>0 && !success;i--)try
 505         {
 506                 success=run_();
 507         }
 508         catch(String s)
 509         {
 510                 err=s;
 511         }
 512         if(!success && !err.empty())
 513         {
 514                 get_canvas_view()->get_ui_interface()->error(err);
 515         }
 516         return success;
 517 }
 518
 519 bool
 520 StateBLine_Context::run_()
 521 {
 522         curr_duck=0;
 523         next_duck=0;
 524
 525         // Now we need to generate it
 526
 527         if(bline_point_list.empty())
 528         {
 529                 return false;
 530         }
 531         if(bline_point_list.size()<2)
 532         {
 533                 //get_canvas_view()->get_ui_interface()->error(_("You need at least two (2) points to create a BLine"));
 534                 return false;
 535         }
 536
 537         do
 538         {
 539
 540                 // Create the action group
 541                 synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New BLine"));
 542
 543                 std::vector<BLinePoint> new_list;
 544                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 545                 const synfig::TransformStack& transform(get_transform_stack());
 546
 547                 for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
 548                 {
 549                         BLinePoint bline_point((*iter)->get_value().get(BLinePoint()));
 550                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 551
 552                         bline_point.set_tangent1(
 553                                 transform.unperform(
 554                                         bline_point.get_tangent1()+bline_point.get_vertex()
 555                                 ) -new_vertex
 556                         );
 557
 558                         bline_point.set_tangent2(
 559                                 transform.unperform(
 560                                         bline_point.get_tangent2()+bline_point.get_vertex()
 561                                 ) -new_vertex
 562                         );
 563
 564                         bline_point.set_vertex(new_vertex);
 565
 566                         new_list.push_back(bline_point);
 567                 }
 568
 569                 ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
 570                 assert(value_node_bline);
 571
 572                 ValueNode_Const::Handle value_node_offset(ValueNode_Const::create(Vector()));
 573                 assert(value_node_offset);
 574
 575                 // Set the looping flag
 576                 value_node_bline->set_loop(loop_);
 577
 578                 // Add the BLine to the canvas
 579                 if(get_auto_export_flag() && !get_canvas_interface()->add_value_node(value_node_bline,get_id()))
 580                 {
 581                         //get_canvas_view()->get_ui_interface()->error(_("Unable to add value node"));
 582                         group.cancel();
 583                         increment_id();
 584                         throw String(_("Unable to add value node"));
 585                         return false;
 586                 }
 587
 588                 Layer::Handle layer;
 589
 590                 // we are temporarily using the layer to hold something
 591                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 592
 593                 if(layer)
 594                 {
 595                         if(depth<0)
 596                                 depth=layer->get_depth();
 597                         if(!canvas)
 598                                 canvas=layer->get_canvas();
 599                 }
 600                 else
 601                         depth=0;
 602
 603                 if(!canvas)
 604                         canvas=get_canvas_view()->get_canvas();
 605
 606                 synfigapp::SelectionManager::LayerList layer_selection;
 607
 608                 ///////////////////////////////////////////////////////////////////////////
 609                 //   C U R V E   G R A D I E N T
 610                 ///////////////////////////////////////////////////////////////////////////
 611
 612                 if(get_layer_curve_gradient_flag())
 613                 {
 614                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 615
 616                         Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
 617                         assert(layer);
 618                         layer_selection.push_back(layer);
 619                         layer->set_description(get_id()+_(" Gradient"));
 620                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 621
 622                         {
 623                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 624                                 assert(action);
 625
 626                                 action->set_param("canvas",get_canvas());
 627                                 action->set_param("canvas_interface",get_canvas_interface());
 628                                 action->set_param("layer",layer);
 629                                 if(!action->set_param("param",String("bline")))
 630                                         synfig::error("LayerParamConnect didn't like \"param\"");
 631                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 632                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 633
 634                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 635                                 {
 636                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 637                                         group.cancel();
 638                                         throw String(_("Unable to create Gradient layer"));
 639                                         return false;
 640                                 }
 641                         }
 642
 643                         if (get_layer_link_offsets_flag())
 644                         {
 645                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 646                                 assert(action);
 647
 648                                 action->set_param("canvas",get_canvas());
 649                                 action->set_param("canvas_interface",get_canvas_interface());
 650                                 action->set_param("layer",layer);
 651                                 if(!action->set_param("param",String("offset")))
 652                                         synfig::error("LayerParamConnect didn't like \"param\"");
 653                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 654                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 655
 656                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 657                                 {
 658                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 659                                         group.cancel();
 660                                         throw String(_("Unable to create Gradient layer"));
 661                                         return false;
 662                                 }
 663                         }
 664                 }
 665
 666                 ///////////////////////////////////////////////////////////////////////////
 667                 //   P L A N T
 668                 ///////////////////////////////////////////////////////////////////////////
 669
 670                 if(get_layer_plant_flag())
 671                 {
 672                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 673
 674                         Layer::Handle layer(get_canvas_interface()->add_layer_to("plant",canvas,depth));
 675                         assert(layer);
 676                         layer_selection.push_back(layer);
 677                         layer->set_description(get_id()+_(" Plant"));
 678                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 679
 680                         {
 681                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 682                                 assert(action);
 683
 684                                 action->set_param("canvas",get_canvas());
 685                                 action->set_param("canvas_interface",get_canvas_interface());
 686                                 action->set_param("layer",layer);
 687                                 if(!action->set_param("param",String("bline")))
 688                                         synfig::error("LayerParamConnect didn't like \"param\"");
 689                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 690                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 691
 692                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 693                                 {
 694                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 695                                         group.cancel();
 696                                         throw String(_("Unable to create Plant layer"));
 697                                         return false;
 698                                 }
 699                         }
 700
 701                         // plants don't have offsets?
 702                         if (get_layer_link_offsets_flag())
 703                         {
 704                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 705                                 assert(action);
 706
 707                                 action->set_param("canvas",get_canvas());
 708                                 action->set_param("canvas_interface",get_canvas_interface());
 709                                 action->set_param("layer",layer);
 710                                 if(!action->set_param("param",String("offset")))
 711                                         synfig::error("LayerParamConnect didn't like \"param\"");
 712                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 713                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 714
 715                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 716                                 {
 717                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 718                                         group.cancel();
 719                                         throw String(_("Unable to create Plant layer"));
 720                                         return false;
 721                                 }
 722                         }
 723                 }
 724
 725                 ///////////////////////////////////////////////////////////////////////////
 726                 //   R E G I O N
 727                 ///////////////////////////////////////////////////////////////////////////
 728
 729                 if(get_layer_region_flag())
 730                 {
 731                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 732
 733                         Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
 734                         assert(layer);
 735                         layer_selection.push_back(layer);
 736                         layer->set_description(get_id()+_(" Region"));
 737                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 738
 739                         if(get_feather())
 740                         {
 741                                 layer->set_param("feather",get_feather());
 742                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 743                         }
 744
 745                         if(get_layer_outline_flag())
 746                                 layer->set_param("color",synfigapp::Main::get_background_color());
 747
 748                         // I don't know if it's safe to reuse the same layer_param_connect action, so I'm
 749                         // using 2 separate ones.
 750                         {
 751                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 752                                 assert(action);
 753
 754                                 action->set_param("canvas",get_canvas());
 755                                 action->set_param("canvas_interface",get_canvas_interface());
 756                                 action->set_param("layer",layer);
 757                                 if(!action->set_param("param",String("bline")))
 758                                         synfig::error("LayerParamConnect didn't like \"param\"");
 759                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 760                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 761
 762                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 763                                 {
 764                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 765                                         group.cancel();
 766                                         throw String(_("Unable to create Region layer"));
 767                                         return false;
 768                                 }
 769                         }
 770
 771                         if (get_layer_link_offsets_flag())
 772                         {
 773                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 774                                 assert(action);
 775
 776                                 action->set_param("canvas",get_canvas());
 777                                 action->set_param("canvas_interface",get_canvas_interface());
 778                                 action->set_param("layer",layer);
 779                                 if(!action->set_param("param",String("offset")))
 780                                         synfig::error("LayerParamConnect didn't like \"param\"");
 781                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 782                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 783
 784                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 785                                 {
 786                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 787                                         group.cancel();
 788                                         throw String(_("Unable to create Region layer"));
 789                                         return false;
 790                                 }
 791                         }
 792                 }
 793
 794                 ///////////////////////////////////////////////////////////////////////////
 795                 //   O U T L I N E
 796                 ///////////////////////////////////////////////////////////////////////////
 797
 798                 if(get_layer_outline_flag())
 799                 {
 800                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 801
 802                         Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
 803                         assert(layer);
 804                         layer_selection.push_back(layer);
 805                         layer->set_description(get_id()+_(" Outline"));
 806                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 807                         if(get_feather())
 808                         {
 809                                 layer->set_param("feather",get_feather());
 810                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 811                         }
 812
 813                         {
 814                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 815                                 assert(action);
 816
 817                                 action->set_param("canvas",get_canvas());
 818                                 action->set_param("canvas_interface",get_canvas_interface());
 819                                 action->set_param("layer",layer);
 820                                 if(!action->set_param("param",String("bline")))
 821                                         synfig::error("LayerParamConnect didn't like \"param\"");
 822                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 823                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 824
 825                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 826                                 {
 827                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 828                                         group.cancel();
 829                                         throw String(_("Unable to create Outline layer"));
 830                                         return false;
 831                                 }
 832                         }
 833
 834                         if (get_layer_link_offsets_flag())
 835                         {
 836                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 837                                 assert(action);
 838
 839                                 action->set_param("canvas",get_canvas());
 840                                 action->set_param("canvas_interface",get_canvas_interface());
 841                                 action->set_param("layer",layer);
 842                                 if(!action->set_param("param",String("offset")))
 843                                         synfig::error("LayerParamConnect didn't like \"param\"");
 844                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 845                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 846
 847                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 848                                 {
 849                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 850                                         group.cancel();
 851                                         throw String(_("Unable to create Outline layer"));
 852                                         return false;
 853                                 }
 854                         }
 855                 }
 856
 857                 egress_on_selection_change=false;
 858                 get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 859                 get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
 860                 egress_on_selection_change=true;
 861
 862                 //if(finish_bline_dialog.get_region_flag() || finish_bline_dialog.get_bline_flag())
 863                 //      get_canvas_interface()->signal_dirty_preview()();
 864
 865         } while(0);
 866
 867         reset();
 868         increment_id();
 869         return true;
 870 }
 871
 872 Smach::event_result
 873 StateBLine_Context::event_mouse_motion_handler(const Smach::event& x)
 874 {
 875         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 876
 877         if(curr_duck)
 878         {
 879                 //synfig::info("Moved Duck");
 880                 Point p(get_work_area()->snap_point_to_grid(event.pos));
 881                 curr_duck->set_trans_point(p);
 882                 if(next_duck)
 883                         next_duck->set_trans_point(p);
 884                 get_work_area()->queue_draw();
 885                 return Smach::RESULT_ACCEPT;
 886         }
 887
 888         return Smach::RESULT_OK;
 889 }
 890
 891 Smach::event_result
 892 StateBLine_Context::event_mouse_release_handler(const Smach::event& /*x*/)
 893 {
 894         if(curr_duck)
 895         {
 896                 //synfig::info("Released current duck");
 897                 curr_duck->signal_edited()(curr_duck->get_point());
 898                 if(next_duck)
 899                 {
 900                         //synfig::info("grabbing next duck");
 901                         curr_duck=next_duck;
 902                         next_duck=0;
 903                 }
 904                 return Smach::RESULT_ACCEPT;
 905         }
 906         return Smach::RESULT_OK;
 907 }
 908
 909 Smach::event_result
 910 StateBLine_Context::event_mouse_click_handler(const Smach::event& x)
 911 {
 912         synfig::info("STATE BLINE: Received mouse button down Event");
 913         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 914         switch(event.button)
 915         {
 916         case BUTTON_LEFT:
 917                 {
 918                         // If we are already looped up, then don't try to add anything else
 919                         if(loop_)
 920                                 return Smach::RESULT_OK;
 921
 922                         BLinePoint bline_point;
 923
 924                         bline_point.set_vertex(get_work_area()->snap_point_to_grid(event.pos));
 925                         //bline_point.set_width(synfigapp::Main::get_bline_width());
 926                         bline_point.set_width(1.0f);
 927                         bline_point.set_origin(0.5f);
 928                         bline_point.set_split_tangent_flag(false);
 929                         bline_point.set_tangent1(Vector(0,0));
 930
 931                         // set the tangent
 932                         /*
 933                         if(bline_point_list.empty())
 934                         {
 935                                 bline_point.set_tangent1(Vector(1,1));
 936                         }
 937                         else
 938                         {
 939                                 const Vector t(event.pos-bline_point_list.back()->get_value().get(BLinePoint()).get_vertex());
 940                                 bline_point.set_tangent1(t);
 941                         }
 942
 943                         if(bline_point_list.size()>1)
 944                         {
 945                                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 946                                 iter=bline_point_list.end();
 947                                 iter--;iter--;
 948                                 BLinePoint prev(bline_point_list.back()->get_value().get(BLinePoint()));
 949                                 prev.set_tangent1(event.pos-(*iter)->get_value().get(BLinePoint()).get_vertex());
 950                                 bline_point_list.back()->set_value(prev);
 951                         };
 952                         */
 953
 954                         bline_point_list.push_back(ValueNode_Const::create(bline_point));
 955
 956                         refresh_ducks();
 957                         return Smach::RESULT_ACCEPT;
 958                 }
 959
 960         case BUTTON_RIGHT: // Intercept the right-button click to short-circuit the pop-up menu
 961                 if (!getenv("SYNFIG_ENABLE_POPUP_MENU_IN_ALL_TOOLS"))
 962                         return Smach::RESULT_ACCEPT;
 963
 964         default:
 965                 return Smach::RESULT_OK;
 966         }
 967 }
 968
 969 void
 970 StateBLine_Context::refresh_ducks(bool button_down)
 971 {
 972         get_work_area()->clear_ducks();
 973         get_work_area()->queue_draw();
 974
 975         if(bline_point_list.empty())
 976                 return;
 977
 978         list<ValueNode_Const::Handle>::iterator iter;
 979
 980         handle<WorkArea::Bezier> bezier;
 981         handle<WorkArea::Duck> duck,tduck;
 982         BLinePoint bline_point;
 983
 984         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
 985         {
 986                 ValueNode_Const::Handle value_node(*iter);
 987                 bline_point=(value_node->get_value().get(BLinePoint()));
 988                 assert(value_node);
 989
 990
 991                 // First add the duck associated with this vertex
 992                 duck=new WorkArea::Duck(bline_point.get_vertex());
 993                 duck->set_editable(true);
 994 #ifdef DISTINGUISH_FIRST_DUCK
 995                 if (iter!=bline_point_list.begin())
 996                         duck->set_type(Duck::TYPE_VERTEX);
 997 #else
 998                 duck->set_type(Duck::TYPE_VERTEX);
 999 #endif
1000                 duck->set_name(strprintf("%x-vertex",value_node.get()));
1001                 duck->signal_edited().connect(
1002                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),value_node)
1003                 );
1004                 duck->signal_user_click(2).connect(
1005                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),value_node)
1006                 );
1007                 duck->set_guid(value_node->get_guid()^GUID::hasher(0));
1008
1009                 get_work_area()->add_duck(duck);
1010
1011                 // Add the tangent1 duck
1012                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1013                 tduck->set_editable(true);
1014                 tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1015                 tduck->set_origin(duck);
1016                 tduck->set_scalar(-0.33333333333333333);
1017                 tduck->set_tangent(true);
1018                 tduck->set_guid(value_node->get_guid()^GUID::hasher(3));
1019                 tduck->signal_edited().connect(
1020                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1021                 );
1022                 tduck->signal_user_click(2).connect(
1023                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1024                 );
1025
1026                 // See if we need to add that duck to the previous bezier
1027                 if(bezier)
1028                 {
1029                         get_work_area()->add_duck(tduck);
1030                         bezier->p2=duck;
1031                         bezier->c2=tduck;
1032
1033                         bezier->signal_user_click(2).connect(
1034                                 sigc::bind(
1035                                         sigc::mem_fun(
1036                                                 *this,
1037                                                 &studio::StateBLine_Context::popup_bezier_menu
1038                                         ),
1039                                         value_node
1040                                 )
1041                         );
1042
1043                         //get_work_area()->add_duck(bezier->c1);
1044                         //get_work_area()->add_duck(bezier->c2);
1045                         get_work_area()->add_bezier(bezier);
1046
1047                         bezier=0;
1048                 }
1049
1050                 // Now we see if we need to create a bezier
1051                 list<ValueNode_Const::Handle>::iterator next(iter);
1052                 next++;
1053
1054                 // If our next iterator is the end, then we don't need
1055                 // to add a bezier.
1056                 //if(next==bline_point_list.end() && !loop_)
1057                 //      continue;
1058
1059                 bezier=new WorkArea::Bezier();
1060
1061                 // Add the tangent2 duck
1062                 tduck=new WorkArea::Duck(bline_point.get_tangent2());
1063                 tduck->set_editable(true);
1064                 tduck->set_origin(duck);
1065                 tduck->set_scalar(0.33333333333333333);
1066                 tduck->set_tangent(true);
1067                 if(bline_point.get_split_tangent_flag())
1068                 {
1069                         tduck->set_name(strprintf("%x-tangent2",value_node.get()));
1070                         tduck->signal_edited().connect(
1071                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent2_change),value_node)
1072                         );
1073                 }
1074                 else
1075                 {
1076                         tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1077                         tduck->signal_edited().connect(
1078                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1079                         );
1080                 }
1081                 tduck->set_guid(value_node->get_guid()^GUID::hasher(4));
1082                 tduck->signal_user_click(2).connect(
1083                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1084                 );
1085
1086                 // Setup the next bezier
1087                 bezier->p1=duck;
1088                 bezier->c1=tduck;
1089
1090                 get_work_area()->add_duck(tduck);
1091                 curr_duck=tduck;
1092         }
1093
1094         // Add the loop, if requested
1095         if(bezier && loop_)
1096         {
1097                 curr_duck=0;
1098                 BLinePoint bline_point(bline_point_list.front()->get_value().get(BLinePoint()));
1099
1100                 duck=new WorkArea::Duck(bline_point.get_vertex());
1101                 duck->set_editable(true);
1102 #ifndef DISTINGUISH_FIRST_DUCK
1103                 duck->set_type(Duck::TYPE_VERTEX);
1104 #endif
1105                 duck->set_name(strprintf("%x-vertex",bline_point_list.front().get()));
1106                 duck->signal_edited().connect(
1107                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),bline_point_list.front())
1108                 );
1109                 duck->signal_user_click(2).connect(
1110                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),bline_point_list.front())
1111                 );
1112                 get_work_area()->add_duck(duck);
1113
1114                 // Add the tangent1 duck
1115                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1116                 tduck->set_editable(true);
1117                 tduck->set_name(strprintf("%x-tangent1",bline_point_list.front().get()));
1118                 tduck->set_origin(duck);
1119                 tduck->set_scalar(-0.33333333333333333);
1120                 tduck->set_tangent(true);
1121                 tduck->signal_edited().connect(
1122                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),bline_point_list.front())
1123                 );
1124                 tduck->signal_user_click(2).connect(
1125                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),bline_point_list.front())
1126                 );
1127                 get_work_area()->add_duck(tduck);
1128
1129                 bezier->p2=duck;
1130                 bezier->c2=tduck;
1131
1132                 bezier->signal_user_click(2).connect(
1133                         sigc::bind(
1134                                 sigc::mem_fun(
1135                                         *this,
1136                                         &studio::StateBLine_Context::popup_bezier_menu
1137                                 ),
1138                                 bline_point_list.front()
1139                         )
1140                 );
1141
1142                 //get_work_area()->add_duck(bezier->c1);
1143                 get_work_area()->add_bezier(bezier);
1144         }
1145         if(bezier && !loop_)
1146         {
1147                 duck=new WorkArea::Duck(bline_point.get_vertex());
1148                 duck->set_ignore(true);
1149                 duck->set_name("temp");
1150
1151                 // Add the tangent1 duck
1152                 tduck=new WorkArea::Duck(Vector(0,0));
1153                 tduck->set_ignore(true);
1154                 tduck->set_name("ttemp");
1155                 tduck->set_origin(duck);
1156                 tduck->set_scalar(-0.33333333333333333);
1157
1158                 tduck->set_tangent(true);
1159                 bezier->p2=duck;
1160                 bezier->c2=tduck;
1161
1162                 get_work_area()->add_duck(bezier->p2);
1163                 //get_work_area()->add_duck(bezier->c2);
1164                 get_work_area()->add_bezier(bezier);
1165
1166                 duck->set_guid(GUID());
1167                 tduck->set_guid(GUID());
1168
1169                 next_duck=duck;
1170         }
1171
1172         if(!button_down)
1173         {
1174                 if(curr_duck)
1175                 {
1176                         if(next_duck)
1177                         {
1178                                 curr_duck=next_duck;
1179                                 next_duck=0;
1180                         }
1181                 }
1182         }
1183         get_work_area()->queue_draw();
1184 }
1185
1186
1187 bool
1188 StateBLine_Context::on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1189 {
1190         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1191         bline_point.set_vertex(point);
1192         value_node->set_value(bline_point);
1193         //refresh_ducks();
1194         return true;
1195 }
1196
1197 bool
1198 StateBLine_Context::on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1199 {
1200         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1201         bline_point.set_tangent1(point);
1202         value_node->set_value(bline_point);
1203         //refresh_ducks();
1204         return true;
1205 }
1206
1207 bool
1208 StateBLine_Context::on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1209 {
1210         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1211         bline_point.set_tangent2(point);
1212         value_node->set_value(bline_point);
1213         //refresh_ducks();
1214         return true;
1215 }
1216
1217 void
1218 StateBLine_Context::loop_bline()
1219 {
1220         loop_=true;
1221
1222         refresh_ducks(false);
1223 }
1224
1225 void
1226 StateBLine_Context::unloop_bline()
1227 {
1228         loop_=false;
1229
1230         refresh_ducks(false);
1231 }
1232
1233 void
1234 StateBLine_Context::popup_vertex_menu(synfig::ValueNode_Const::Handle value_node)
1235 {
1236         menu.items().clear();
1237
1238         if(loop_)
1239         {
1240                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Unloop BLine"),
1241                                 sigc::mem_fun(*this,&studio::StateBLine_Context::unloop_bline)
1242                 ));
1243         } else {
1244                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Loop BLine"),
1245                                 sigc::mem_fun(*this,&studio::StateBLine_Context::loop_bline)
1246                 ));
1247         }
1248
1249         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Delete Vertex"),
1250                 sigc::bind(
1251                         sigc::mem_fun(*this,&studio::StateBLine_Context::bline_delete_vertex),
1252                         value_node
1253                 )
1254         ));
1255
1256         menu.popup(0,0);
1257 }
1258
1259 void
1260 StateBLine_Context::popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node)
1261 {
1262         menu.items().clear();
1263
1264         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Insert Vertex"),
1265                 sigc::bind(
1266                         sigc::bind(
1267                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_insert_vertex),
1268                                 location
1269                         ),
1270                         value_node
1271                 )
1272         ));
1273
1274         menu.popup(0,0);
1275 }
1276
1277 void
1278 StateBLine_Context::bline_insert_vertex(synfig::ValueNode_Const::Handle value_node, float origin)
1279 {
1280         list<ValueNode_Const::Handle>::iterator iter;
1281
1282         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1283                 if(*iter==value_node)
1284                 {
1285                         BLinePoint bline_point;
1286                         BLinePoint next_bline_point((*iter)->get_value().get(BLinePoint()));
1287                         BLinePoint prev_bline_point;
1288
1289                         list<ValueNode_Const::Handle>::iterator prev(iter);
1290                         if(iter==bline_point_list.begin())
1291                         {
1292                                 assert(loop_);
1293                                 prev = bline_point_list.end();
1294                         }
1295                         prev--;
1296
1297                         prev_bline_point=(*prev)->get_value().get(BLinePoint());
1298
1299                         etl::hermite<Vector> curve(prev_bline_point.get_vertex(),
1300                                                                            next_bline_point.get_vertex(),
1301                                                                            prev_bline_point.get_tangent2(),
1302                                                                            next_bline_point.get_tangent1());
1303                         etl::derivative< etl::hermite<Vector> > deriv(curve);
1304
1305                         bline_point.set_vertex(curve(origin));
1306                         bline_point.set_width((next_bline_point.get_width()-prev_bline_point.get_width())*origin+prev_bline_point.get_width());
1307 #ifdef ETL_FIXED_DERIVATIVE
1308                         bline_point.set_tangent1(deriv(origin)*std::min(1.0f-origin,origin));
1309 #else
1310                         bline_point.set_tangent1(-deriv(origin)*std::min(1.0f-origin,origin));
1311 #endif
1312                         bline_point.set_tangent2(bline_point.get_tangent1());
1313                         bline_point.set_split_tangent_flag(false);
1314                         bline_point.set_origin(origin);
1315
1316 /*
1317                         bline_point.set_vertex((next_bline_point.get_vertex()+prev_bline_point.get_vertex())*0.5);
1318                         bline_point.set_width((next_bline_point.get_width()+prev_bline_point.get_width())*0.5);
1319                         bline_point.set_origin(origin);
1320                         bline_point.set_split_tangent_flag(false);
1321                         bline_point.set_tangent1((next_bline_point.get_vertex()-prev_bline_point.get_vertex())*0.5);
1322 */
1323
1324                         bline_point_list.insert(iter,ValueNode_Const::create(bline_point));
1325                         break;
1326                 }
1327
1328         if(iter==bline_point_list.end())
1329         {
1330                 get_canvas_view()->get_ui_interface()->error(_("Unable to find where to insert vertex, internal error, please report this bug"));
1331         }
1332
1333         refresh_ducks(false);
1334 }
1335
1336 void
1337 StateBLine_Context::bline_delete_vertex(synfig::ValueNode_Const::Handle value_node)
1338 {
1339         list<ValueNode_Const::Handle>::iterator iter;
1340
1341         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1342                 if(*iter==value_node)
1343                 {
1344                         bline_point_list.erase(iter);
1345                         break;
1346                 }
1347         if(iter==bline_point_list.end())
1348         {
1349                 get_canvas_view()->get_ui_interface()->error(_("Unable to remove vertex, internal error, please report this bug"));
1350         }
1351
1352         refresh_ducks(false);
1353 }
1354
1355 void
1356 StateBLine_Context::popup_handle_menu(synfig::ValueNode_Const::Handle value_node)
1357 {
1358         menu.items().clear();
1359
1360         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1361
1362         if(bline_point.get_split_tangent_flag())
1363                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Merge Tangents"),
1364                         sigc::bind(
1365                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_attach_handle),
1366                                 value_node
1367                         )
1368                 ));
1369         else
1370                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Split Tangents"),
1371                         sigc::bind(
1372                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_detach_handle),
1373                                 value_node
1374                         )
1375                 ));
1376
1377         menu.popup(0,0);
1378 }
1379
1380 void
1381 StateBLine_Context::bline_detach_handle(synfig::ValueNode_Const::Handle value_node)
1382 {
1383         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1384         bline_point.set_split_tangent_flag(true);
1385         bline_point.set_tangent2(bline_point.get_tangent1());
1386         value_node->set_value(bline_point);
1387         refresh_ducks(false);
1388 }
1389
1390 void
1391 StateBLine_Context::bline_attach_handle(synfig::ValueNode_Const::Handle value_node)
1392 {
1393         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1394         bline_point.set_tangent1((bline_point.get_tangent1()+bline_point.get_tangent2())*0.5);
1395         bline_point.set_split_tangent_flag(false);
1396         value_node->set_value(bline_point);
1397         refresh_ducks(false);
1398 }