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;
 309                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 310                          digits++)
 311                         ;
 312
 313                 String str_number;
 314                 str_number=String(id,id.size()-digits,id.size());
 315                 id=String(id,0,id.size()-digits);
 316                 synfig::info("---------------- \"%s\"",str_number.c_str());
 317
 318                 number=atoi(str_number.c_str());
 319         }
 320         else
 321         {
 322                 number=1;
 323                 digits=3;
 324         }
 325
 326         number++;
 327
 328         // Add the number back onto the id
 329         {
 330                 const String format(strprintf("%%0%dd",digits));
 331                 id+=strprintf(format.c_str(),number);
 332         }
 333
 334         // Set the ID
 335         set_id(id);
 336 }
 337
 338
 339 StateBLine_Context::StateBLine_Context(CanvasView* canvas_view):
 340         canvas_view_(canvas_view),
 341         is_working(*canvas_view),
 342         loop_(false),
 343         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 344         duckmatic_push(get_work_area()),
 345         settings(synfigapp::Main::get_selected_input_device()->settings()),
 346         entry_id(),
 347         checkbutton_layer_region(_("Fill")),
 348         checkbutton_layer_bline(_("Outline")),
 349         checkbutton_layer_curve_gradient(_("Gradient")),
 350         checkbutton_layer_link_offsets(_("Link Offsets")),
 351         checkbutton_auto_export(_("Auto Export")),
 352         button_make(_("Make")),
 353         button_clear(_("Clear")),
 354         adj_feather(0,0,10000,0.01,0.1),
 355         spin_feather(adj_feather,0.01,4)
 356 {
 357         depth=-1;
 358         egress_on_selection_change=true;
 359         load_settings();
 360
 361         // Set up the tool options dialog
 362         //options_table.attach(*manage(new Gtk::Label(_("BLine Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 363         options_table.attach(entry_id,                                                          0, 2,  1,  2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 364         options_table.attach(checkbutton_layer_region,                          0, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 365         options_table.attach(checkbutton_layer_bline,                           0, 2,  3,  4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 366         options_table.attach(checkbutton_layer_curve_gradient,          0, 2,  4,  5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 367         options_table.attach(checkbutton_layer_link_offsets,            0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 368         options_table.attach(checkbutton_auto_export,                           0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 369         options_table.attach(*manage(new Gtk::Label(_("Feather"))), 0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 370         options_table.attach(spin_feather,                                                      1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 371         //options_table.attach(button_make, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 372         //button_make.signal_pressed().connect(sigc::mem_fun(*this,&StateBLine_Context::run));
 373         options_table.show_all();
 374         refresh_tool_options();
 375         App::dialog_tool_options->present();
 376
 377         // Turn off layer clicking
 378         get_work_area()->set_allow_layer_clicks(false);
 379
 380         // clear out the ducks
 381         get_work_area()->clear_ducks();
 382
 383         // Refresh the work area
 384         get_work_area()->queue_draw();
 385
 386         // Hide the tables if they are showing
 387         prev_table_status=get_canvas_view()->tables_are_visible();
 388         if(prev_table_status)get_canvas_view()->hide_tables();
 389
 390         // Disable the time bar
 391         get_canvas_view()->set_sensitive_timebar(false);
 392
 393         // Connect a signal
 394         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateBLine_Context::on_user_click));
 395         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 396
 397         App::toolbox->refresh();
 398 }
 399
 400 void
 401 StateBLine_Context::refresh_tool_options()
 402 {
 403         App::dialog_tool_options->clear();
 404         App::dialog_tool_options->set_widget(options_table);
 405         App::dialog_tool_options->set_local_name(_("BLine Tool"));
 406         App::dialog_tool_options->set_name("bline");
 407
 408         App::dialog_tool_options->add_button(
 409                 Gtk::StockID("gtk-execute"),
 410                 _("Make BLine and/or Region")
 411         )->signal_clicked().connect(
 412                 sigc::hide_return(sigc::mem_fun(
 413                         *this,
 414                         &StateBLine_Context::run
 415                 ))
 416         );
 417
 418         App::dialog_tool_options->add_button(
 419                 Gtk::StockID("gtk-clear"),
 420                 _("Clear current BLine")
 421         )->signal_clicked().connect(
 422                 sigc::mem_fun(
 423                         *this,
 424                         &StateBLine_Context::reset
 425                 )
 426         );
 427 }
 428
 429 Smach::event_result
 430 StateBLine_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 431 {
 432         refresh_tool_options();
 433         return Smach::RESULT_ACCEPT;
 434 }
 435
 436 StateBLine_Context::~StateBLine_Context()
 437 {
 438         run();
 439
 440         save_settings();
 441         App::dialog_tool_options->clear();
 442
 443         get_canvas_view()->work_area->reset_cursor();
 444
 445         // Restore layer clicking
 446         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 447
 448         // Enable the time bar
 449         get_canvas_view()->set_sensitive_timebar(true);
 450
 451         // Bring back the tables if they were out before
 452         if(prev_table_status)get_canvas_view()->show_tables();
 453
 454 //      get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
 455
 456         // Refresh the work area
 457         get_work_area()->queue_draw();
 458
 459         App::toolbox->refresh();
 460 }
 461
 462 Smach::event_result
 463 StateBLine_Context::event_stop_handler(const Smach::event& /*x*/)
 464 {
 465         synfig::info("STATE RotoBLine: Received Stop Event");
 466 //      run();
 467         reset();
 468 //      throw Smach::egress_exception();
 469 //      get_canvas_view()->get_smach().pop_state();
 470         return Smach::RESULT_ACCEPT;
 471 }
 472
 473 Smach::event_result
 474 StateBLine_Context::event_refresh_handler(const Smach::event& /*x*/)
 475 {
 476         synfig::info("STATE RotoBLine: Received Refresh Event");
 477         refresh_ducks();
 478         return Smach::RESULT_ACCEPT;
 479 }
 480
 481 bool
 482 StateBLine_Context::run()
 483 {
 484         sanity_check();
 485
 486         String err;
 487         bool success(false);
 488         for(int i=5;i>0 && !success;i--)try
 489         {
 490                 success=run_();
 491         }
 492         catch(String s)
 493         {
 494                 err=s;
 495         }
 496         if(!success && !err.empty())
 497         {
 498                 get_canvas_view()->get_ui_interface()->error(err);
 499         }
 500         return success;
 501 }
 502
 503 bool
 504 StateBLine_Context::run_()
 505 {
 506         curr_duck=0;
 507         next_duck=0;
 508
 509         // Now we need to generate it
 510
 511         if(bline_point_list.empty())
 512         {
 513                 return false;
 514         }
 515         if(bline_point_list.size()<2)
 516         {
 517                 //get_canvas_view()->get_ui_interface()->error(_("You need at least two (2) points to create a BLine"));
 518                 return false;
 519         }
 520
 521         do
 522         {
 523
 524                 // Create the action group
 525                 synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New BLine"));
 526
 527                 std::vector<BLinePoint> new_list;
 528                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 529                 const synfig::TransformStack& transform(get_transform_stack());
 530
 531                 for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
 532                 {
 533                         BLinePoint bline_point((*iter)->get_value().get(BLinePoint()));
 534                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 535
 536                         bline_point.set_tangent1(
 537                                 transform.unperform(
 538                                         bline_point.get_tangent1()+bline_point.get_vertex()
 539                                 ) -new_vertex
 540                         );
 541
 542                         bline_point.set_tangent2(
 543                                 transform.unperform(
 544                                         bline_point.get_tangent2()+bline_point.get_vertex()
 545                                 ) -new_vertex
 546                         );
 547
 548                         bline_point.set_vertex(new_vertex);
 549
 550                         new_list.push_back(bline_point);
 551                 }
 552
 553                 ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
 554                 assert(value_node_bline);
 555
 556                 ValueNode_Const::Handle value_node_offset(ValueNode_Const::create(Vector()));
 557                 assert(value_node_offset);
 558
 559                 // Set the looping flag
 560                 value_node_bline->set_loop(loop_);
 561
 562                 // Add the BLine to the canvas
 563                 if(get_auto_export_flag() && !get_canvas_interface()->add_value_node(value_node_bline,get_id()))
 564                 {
 565                         //get_canvas_view()->get_ui_interface()->error(_("Unable to add value node"));
 566                         group.cancel();
 567                         increment_id();
 568                         throw String(_("Unable to add value node"));
 569                         return false;
 570                 }
 571
 572                 Layer::Handle layer;
 573
 574                 // we are temporarily using the layer to hold something
 575                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 576
 577                 if(layer)
 578                 {
 579                         if(depth<0)
 580                                 depth=layer->get_depth();
 581                         if(!canvas)
 582                                 canvas=layer->get_canvas();
 583                 }
 584                 else
 585                         depth=0;
 586
 587                 if(!canvas)
 588                         canvas=get_canvas_view()->get_canvas();
 589
 590                 synfigapp::SelectionManager::LayerList layer_selection;
 591
 592                 // If we were asked to create a region layer, go ahead and do so
 593                 if(get_layer_region_flag())
 594                 {
 595                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 596
 597                         Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
 598                         assert(layer);
 599                         layer_selection.push_back(layer);
 600                         layer->set_description(get_id()+_(" Region"));
 601                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 602
 603                         if(get_feather())
 604                         {
 605                                 layer->set_param("feather",get_feather());
 606                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 607                         }
 608
 609                         if(get_layer_bline_flag())
 610                                 layer->set_param("color",synfigapp::Main::get_background_color());
 611
 612                         // I don't know if it's safe to reuse the same layer_param_connect action, so I'm
 613                         // using 2 separate ones.
 614                         {
 615                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 616                                 assert(action);
 617
 618                                 action->set_param("canvas",get_canvas());
 619                                 action->set_param("canvas_interface",get_canvas_interface());
 620                                 action->set_param("layer",layer);
 621                                 if(!action->set_param("param",String("bline")))
 622                                         synfig::error("LayerParamConnect didn't like \"param\"");
 623                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 624                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 625
 626                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 627                                 {
 628                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 629                                         group.cancel();
 630                                         throw String(_("Unable to create Region layer"));
 631                                         return false;
 632                                 }
 633                         }
 634
 635                         if (get_layer_link_offsets_flag())
 636                         {
 637                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 638                                 assert(action);
 639
 640                                 action->set_param("canvas",get_canvas());
 641                                 action->set_param("canvas_interface",get_canvas_interface());
 642                                 action->set_param("layer",layer);
 643                                 if(!action->set_param("param",String("offset")))
 644                                         synfig::error("LayerParamConnect didn't like \"param\"");
 645                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 646                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 647
 648                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 649                                 {
 650                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 651                                         group.cancel();
 652                                         throw String(_("Unable to create Region layer"));
 653                                         return false;
 654                                 }
 655                         }
 656                 }
 657
 658                 // If we were asked to create a BLine layer, go ahead and do so
 659                 if(get_layer_bline_flag())
 660                 {
 661                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 662
 663                         Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
 664                         assert(layer);
 665                         layer_selection.push_back(layer);
 666                         layer->set_description(get_id()+_(" Outline"));
 667                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 668                         if(get_feather())
 669                         {
 670                                 layer->set_param("feather",get_feather());
 671                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 672                         }
 673
 674                         {
 675                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 676                                 assert(action);
 677
 678                                 action->set_param("canvas",get_canvas());
 679                                 action->set_param("canvas_interface",get_canvas_interface());
 680                                 action->set_param("layer",layer);
 681                                 if(!action->set_param("param",String("bline")))
 682                                         synfig::error("LayerParamConnect didn't like \"param\"");
 683                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 684                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 685
 686                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 687                                 {
 688                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 689                                         group.cancel();
 690                                         throw String(_("Unable to create Outline layer"));
 691                                         return false;
 692                                 }
 693                         }
 694
 695                         if (get_layer_link_offsets_flag())
 696                         {
 697                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 698                                 assert(action);
 699
 700                                 action->set_param("canvas",get_canvas());
 701                                 action->set_param("canvas_interface",get_canvas_interface());
 702                                 action->set_param("layer",layer);
 703                                 if(!action->set_param("param",String("offset")))
 704                                         synfig::error("LayerParamConnect didn't like \"param\"");
 705                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 706                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 707
 708                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 709                                 {
 710                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 711                                         group.cancel();
 712                                         throw String(_("Unable to create Outline layer"));
 713                                         return false;
 714                                 }
 715                         }
 716
 717                         /*if(get_layer_region_flag() && !get_auto_export_flag())
 718                         {
 719                                 get_canvas_interface()->auto_export(synfigapp::ValueDesc(layer,"bline"));
 720                         }*/
 721                 }
 722
 723
 724
 725                 // If we were asked to create a CurveGradient layer, go ahead and do so
 726                 if(get_layer_curve_gradient_flag())
 727                 {
 728                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 729
 730                         Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
 731                         assert(layer);
 732                         layer_selection.push_back(layer);
 733                         layer->set_description(get_id()+_(" Gradient"));
 734                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 735
 736                         {
 737                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 738                                 assert(action);
 739
 740                                 action->set_param("canvas",get_canvas());
 741                                 action->set_param("canvas_interface",get_canvas_interface());
 742                                 action->set_param("layer",layer);
 743                                 if(!action->set_param("param",String("bline")))
 744                                         synfig::error("LayerParamConnect didn't like \"param\"");
 745                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 746                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 747
 748                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 749                                 {
 750                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 751                                         group.cancel();
 752                                         throw String(_("Unable to create Gradient layer"));
 753                                         return false;
 754                                 }
 755                         }
 756
 757                         if (get_layer_link_offsets_flag())
 758                         {
 759                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 760                                 assert(action);
 761
 762                                 action->set_param("canvas",get_canvas());
 763                                 action->set_param("canvas_interface",get_canvas_interface());
 764                                 action->set_param("layer",layer);
 765                                 if(!action->set_param("param",String("offset")))
 766                                         synfig::error("LayerParamConnect didn't like \"param\"");
 767                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 768                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 769
 770                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 771                                 {
 772                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 773                                         group.cancel();
 774                                         throw String(_("Unable to create Gradient layer"));
 775                                         return false;
 776                                 }
 777                         }
 778
 779                         /*if(get_layer_region_flag() && !get_auto_export_flag())
 780                         {
 781                                 get_canvas_interface()->auto_export(synfigapp::ValueDesc(layer,"bline"));
 782                         }*/
 783                 }
 784
 785                 egress_on_selection_change=false;
 786                 get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 787                 get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
 788                 egress_on_selection_change=true;
 789
 790                 //if(finish_bline_dialog.get_region_flag() || finish_bline_dialog.get_bline_flag())
 791                 //      get_canvas_interface()->signal_dirty_preview()();
 792
 793         } while(0);
 794
 795         reset();
 796         increment_id();
 797         return true;
 798 }
 799
 800 Smach::event_result
 801 StateBLine_Context::event_mouse_motion_handler(const Smach::event& x)
 802 {
 803         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 804
 805         if(curr_duck)
 806         {
 807                 //synfig::info("Moved Duck");
 808                 Point p(get_work_area()->snap_point_to_grid(event.pos));
 809                 curr_duck->set_trans_point(p);
 810                 if(next_duck)
 811                         next_duck->set_trans_point(p);
 812                 get_work_area()->queue_draw();
 813                 return Smach::RESULT_ACCEPT;
 814         }
 815
 816         return Smach::RESULT_OK;
 817 }
 818
 819 Smach::event_result
 820 StateBLine_Context::event_mouse_release_handler(const Smach::event& /*x*/)
 821 {
 822         if(curr_duck)
 823         {
 824                 //synfig::info("Released current duck");
 825                 curr_duck->signal_edited()(curr_duck->get_point());
 826                 if(next_duck)
 827                 {
 828                         //synfig::info("grabbing next duck");
 829                         curr_duck=next_duck;
 830                         next_duck=0;
 831                 }
 832                 return Smach::RESULT_ACCEPT;
 833         }
 834         return Smach::RESULT_OK;
 835 }
 836
 837 Smach::event_result
 838 StateBLine_Context::event_mouse_click_handler(const Smach::event& x)
 839 {
 840         synfig::info("STATE BLINE: Received mouse button down Event");
 841         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 842         switch(event.button)
 843         {
 844         case BUTTON_LEFT:
 845                 {
 846                         // If we are already looped up, then don't try to add anything else
 847                         if(loop_)
 848                                 return Smach::RESULT_OK;
 849
 850                         BLinePoint bline_point;
 851
 852                         bline_point.set_vertex(get_work_area()->snap_point_to_grid(event.pos));
 853                         //bline_point.set_width(synfigapp::Main::get_bline_width());
 854                         bline_point.set_width(1.0f);
 855                         bline_point.set_origin(0.5f);
 856                         bline_point.set_split_tangent_flag(false);
 857                         bline_point.set_tangent1(Vector(0,0));
 858
 859                         // set the tangent
 860                         /*
 861                         if(bline_point_list.empty())
 862                         {
 863                                 bline_point.set_tangent1(Vector(1,1));
 864                         }
 865                         else
 866                         {
 867                                 const Vector t(event.pos-bline_point_list.back()->get_value().get(BLinePoint()).get_vertex());
 868                                 bline_point.set_tangent1(t);
 869                         }
 870
 871                         if(bline_point_list.size()>1)
 872                         {
 873                                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 874                                 iter=bline_point_list.end();
 875                                 iter--;iter--;
 876                                 BLinePoint prev(bline_point_list.back()->get_value().get(BLinePoint()));
 877                                 prev.set_tangent1(event.pos-(*iter)->get_value().get(BLinePoint()).get_vertex());
 878                                 bline_point_list.back()->set_value(prev);
 879                         };
 880                         */
 881
 882                         bline_point_list.push_back(ValueNode_Const::create(bline_point));
 883
 884                         refresh_ducks();
 885                         return Smach::RESULT_ACCEPT;
 886                 }
 887
 888         case BUTTON_RIGHT: // Intercept the right-button click to short-circuit the pop-up menu
 889                 if (!getenv("SYNFIG_ENABLE_POPUP_MENU_IN_ALL_TOOLS"))
 890                         return Smach::RESULT_ACCEPT;
 891
 892         default:
 893                 return Smach::RESULT_OK;
 894         }
 895 }
 896
 897 void
 898 StateBLine_Context::refresh_ducks(bool button_down)
 899 {
 900         get_work_area()->clear_ducks();
 901         get_work_area()->queue_draw();
 902
 903         if(bline_point_list.empty())
 904                 return;
 905
 906         list<ValueNode_Const::Handle>::iterator iter;
 907
 908         handle<WorkArea::Bezier> bezier;
 909         handle<WorkArea::Duck> duck,tduck;
 910         BLinePoint bline_point;
 911
 912         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
 913         {
 914                 ValueNode_Const::Handle value_node(*iter);
 915                 bline_point=(value_node->get_value().get(BLinePoint()));
 916                 assert(value_node);
 917
 918
 919                 // First add the duck associated with this vertex
 920                 duck=new WorkArea::Duck(bline_point.get_vertex());
 921                 duck->set_editable(true);
 922                 duck->set_type(Duck::TYPE_VERTEX);
 923                 duck->set_name(strprintf("%x-vertex",value_node.get()));
 924                 duck->signal_edited().connect(
 925                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),value_node)
 926                 );
 927                 duck->signal_user_click(2).connect(
 928                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),value_node)
 929                 );
 930                 duck->set_guid(value_node->get_guid()^GUID::hasher(0));
 931
 932                 get_work_area()->add_duck(duck);
 933
 934                 // Add the tangent1 duck
 935                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
 936                 tduck->set_editable(true);
 937                 tduck->set_name(strprintf("%x-tangent1",value_node.get()));
 938                 tduck->set_origin(duck);
 939                 tduck->set_scalar(-0.33333333333333333);
 940                 tduck->set_tangent(true);
 941                 tduck->set_guid(value_node->get_guid()^GUID::hasher(3));
 942                 tduck->signal_edited().connect(
 943                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
 944                 );
 945                 tduck->signal_user_click(2).connect(
 946                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
 947                 );
 948
 949                 // See if we need to add that duck to the previous bezier
 950                 if(bezier)
 951                 {
 952                         get_work_area()->add_duck(tduck);
 953                         bezier->p2=duck;
 954                         bezier->c2=tduck;
 955
 956                         bezier->signal_user_click(2).connect(
 957                                 sigc::bind(
 958                                         sigc::mem_fun(
 959                                                 *this,
 960                                                 &studio::StateBLine_Context::popup_bezier_menu
 961                                         ),
 962                                         value_node
 963                                 )
 964                         );
 965
 966                         //get_work_area()->add_duck(bezier->c1);
 967                         //get_work_area()->add_duck(bezier->c2);
 968                         get_work_area()->add_bezier(bezier);
 969
 970                         bezier=0;
 971                 }
 972
 973                 // Now we see if we need to create a bezier
 974                 list<ValueNode_Const::Handle>::iterator next(iter);
 975                 next++;
 976
 977                 // If our next iterator is the end, then we don't need
 978                 // to add a bezier.
 979                 //if(next==bline_point_list.end() && !loop_)
 980                 //      continue;
 981
 982                 bezier=new WorkArea::Bezier();
 983
 984                 // Add the tangent2 duck
 985                 tduck=new WorkArea::Duck(bline_point.get_tangent2());
 986                 tduck->set_editable(true);
 987                 tduck->set_origin(duck);
 988                 tduck->set_scalar(0.33333333333333333);
 989                 tduck->set_tangent(true);
 990                 if(bline_point.get_split_tangent_flag())
 991                 {
 992                         tduck->set_name(strprintf("%x-tangent2",value_node.get()));
 993                         tduck->signal_edited().connect(
 994                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent2_change),value_node)
 995                         );
 996                 }
 997                 else
 998                 {
 999                         tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1000                         tduck->signal_edited().connect(
1001                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1002                         );
1003                 }
1004                 tduck->set_guid(value_node->get_guid()^GUID::hasher(4));
1005                 tduck->signal_user_click(2).connect(
1006                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1007                 );
1008
1009                 // Setup the next bezier
1010                 bezier->p1=duck;
1011                 bezier->c1=tduck;
1012
1013                 get_work_area()->add_duck(tduck);
1014                 curr_duck=tduck;
1015         }
1016
1017         // Add the loop, if requested
1018         if(bezier && loop_)
1019         {
1020                 curr_duck=0;
1021                 BLinePoint bline_point(bline_point_list.front()->get_value().get(BLinePoint()));
1022
1023                 duck=new WorkArea::Duck(bline_point.get_vertex());
1024                 duck->set_editable(true);
1025                 duck->set_name(strprintf("%x-vertex",bline_point_list.front().get()));
1026                 duck->signal_edited().connect(
1027                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),bline_point_list.front())
1028                 );
1029                 duck->signal_user_click(2).connect(
1030                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),bline_point_list.front())
1031                 );
1032                 get_work_area()->add_duck(duck);
1033
1034                 // Add the tangent1 duck
1035                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1036                 tduck->set_editable(true);
1037                 tduck->set_name(strprintf("%x-tangent1",bline_point_list.front().get()));
1038                 tduck->set_origin(duck);
1039                 tduck->set_scalar(-0.33333333333333333);
1040                 tduck->set_tangent(true);
1041                 tduck->signal_edited().connect(
1042                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),bline_point_list.front())
1043                 );
1044                 tduck->signal_user_click(2).connect(
1045                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),bline_point_list.front())
1046                 );
1047                 get_work_area()->add_duck(tduck);
1048
1049                 bezier->p2=duck;
1050                 bezier->c2=tduck;
1051
1052                 bezier->signal_user_click(2).connect(
1053                         sigc::bind(
1054                                 sigc::mem_fun(
1055                                         *this,
1056                                         &studio::StateBLine_Context::popup_bezier_menu
1057                                 ),
1058                                 bline_point_list.front()
1059                         )
1060                 );
1061
1062                 //get_work_area()->add_duck(bezier->c1);
1063                 get_work_area()->add_bezier(bezier);
1064         }
1065         if(bezier && !loop_)
1066         {
1067                 duck=new WorkArea::Duck(bline_point.get_vertex());
1068                 duck->set_editable(false);
1069                 duck->set_name("temp");
1070
1071                 // Add the tangent1 duck
1072                 tduck=new WorkArea::Duck(Vector(0,0));
1073                 tduck->set_editable(false);
1074                 tduck->set_name("ttemp");
1075                 tduck->set_origin(duck);
1076                 tduck->set_scalar(-0.33333333333333333);
1077
1078                 tduck->set_tangent(true);
1079                 bezier->p2=duck;
1080                 bezier->c2=tduck;
1081
1082                 get_work_area()->add_duck(bezier->p2);
1083                 //get_work_area()->add_duck(bezier->c2);
1084                 get_work_area()->add_bezier(bezier);
1085
1086                 duck->set_guid(GUID());
1087                 tduck->set_guid(GUID());
1088
1089                 next_duck=duck;
1090         }
1091
1092         if(!button_down)
1093         {
1094                 if(curr_duck)
1095                 {
1096                         if(next_duck)
1097                         {
1098                                 curr_duck=next_duck;
1099                                 next_duck=0;
1100                         }
1101                 }
1102         }
1103         get_work_area()->queue_draw();
1104 }
1105
1106
1107 bool
1108 StateBLine_Context::on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1109 {
1110         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1111         bline_point.set_vertex(point);
1112         value_node->set_value(bline_point);
1113         //refresh_ducks();
1114         return true;
1115 }
1116
1117 bool
1118 StateBLine_Context::on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1119 {
1120         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1121         bline_point.set_tangent1(point);
1122         value_node->set_value(bline_point);
1123         //refresh_ducks();
1124         return true;
1125 }
1126
1127 bool
1128 StateBLine_Context::on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1129 {
1130         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1131         bline_point.set_tangent2(point);
1132         value_node->set_value(bline_point);
1133         //refresh_ducks();
1134         return true;
1135 }
1136
1137 void
1138 StateBLine_Context::loop_bline()
1139 {
1140         loop_=true;
1141
1142         refresh_ducks(false);
1143 }
1144
1145 void
1146 StateBLine_Context::unloop_bline()
1147 {
1148         loop_=false;
1149
1150         refresh_ducks(false);
1151 }
1152
1153 void
1154 StateBLine_Context::popup_vertex_menu(synfig::ValueNode_Const::Handle value_node)
1155 {
1156         menu.items().clear();
1157
1158         if(loop_)
1159         {
1160                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Unloop BLine"),
1161                                 sigc::mem_fun(*this,&studio::StateBLine_Context::unloop_bline)
1162                 ));
1163         } else {
1164                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Loop BLine"),
1165                                 sigc::mem_fun(*this,&studio::StateBLine_Context::loop_bline)
1166                 ));
1167         }
1168
1169         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Delete Vertex"),
1170                 sigc::bind(
1171                         sigc::mem_fun(*this,&studio::StateBLine_Context::bline_delete_vertex),
1172                         value_node
1173                 )
1174         ));
1175
1176         menu.popup(0,0);
1177 }
1178
1179 void
1180 StateBLine_Context::popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node)
1181 {
1182         menu.items().clear();
1183
1184         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Insert Vertex"),
1185                 sigc::bind(
1186                         sigc::bind(
1187                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_insert_vertex),
1188                                 location
1189                         ),
1190                         value_node
1191                 )
1192         ));
1193
1194         menu.popup(0,0);
1195 }
1196
1197 void
1198 StateBLine_Context::bline_insert_vertex(synfig::ValueNode_Const::Handle value_node, float origin)
1199 {
1200         list<ValueNode_Const::Handle>::iterator iter;
1201
1202         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1203                 if(*iter==value_node)
1204                 {
1205                         list<ValueNode_Const::Handle>::iterator prev(iter);
1206                         --prev;
1207
1208                         BLinePoint bline_point;
1209
1210                         BLinePoint next_bline_point((*iter)->get_value().get(BLinePoint()));
1211                         BLinePoint prev_bline_point;
1212
1213                         if(iter!=bline_point_list.begin())
1214                         {
1215                                 prev_bline_point=(*prev)->get_value().get(BLinePoint());
1216                         }
1217                         else
1218                         {
1219                                 prev_bline_point.set_vertex(Point(0,0));
1220                                 prev_bline_point.set_width(next_bline_point.get_width());
1221                                 prev_bline_point.set_origin(0.5);
1222                                 prev_bline_point.set_split_tangent_flag(false);
1223                         }
1224
1225                         etl::hermite<Vector> curve(prev_bline_point.get_vertex(),next_bline_point.get_vertex(),prev_bline_point.get_tangent2(),next_bline_point.get_tangent1());
1226                         etl::derivative< etl::hermite<Vector> > deriv(curve);
1227
1228                         bline_point.set_vertex(curve(origin));
1229                         bline_point.set_width((next_bline_point.get_width()-prev_bline_point.get_width())*origin+prev_bline_point.get_width());
1230 #ifdef ETL_FIXED_DERIVATIVE
1231                         bline_point.set_tangent1(deriv(origin)*std::min(1.0f-origin,origin));
1232 #else
1233                         bline_point.set_tangent1(-deriv(origin)*std::min(1.0f-origin,origin));
1234 #endif
1235                         bline_point.set_tangent2(bline_point.get_tangent1());
1236                         bline_point.set_split_tangent_flag(false);
1237                         bline_point.set_origin(origin);
1238
1239 /*
1240                         bline_point.set_vertex((next_bline_point.get_vertex()+prev_bline_point.get_vertex())*0.5);
1241                         bline_point.set_width((next_bline_point.get_width()+prev_bline_point.get_width())*0.5);
1242                         bline_point.set_origin(origin);
1243                         bline_point.set_split_tangent_flag(false);
1244                         bline_point.set_tangent1((next_bline_point.get_vertex()-prev_bline_point.get_vertex())*0.5);
1245 */
1246
1247                         bline_point_list.insert(iter,ValueNode_Const::create(bline_point));
1248                         break;
1249                 }
1250
1251         if(iter==bline_point_list.end())
1252         {
1253                 get_canvas_view()->get_ui_interface()->error(_("Unable to find where to insert vertex, internal error, please report this bug"));
1254         }
1255
1256         refresh_ducks(false);
1257 }
1258
1259 void
1260 StateBLine_Context::bline_delete_vertex(synfig::ValueNode_Const::Handle value_node)
1261 {
1262         list<ValueNode_Const::Handle>::iterator iter;
1263
1264         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1265                 if(*iter==value_node)
1266                 {
1267                         bline_point_list.erase(iter);
1268                         break;
1269                 }
1270         if(iter==bline_point_list.end())
1271         {
1272                 get_canvas_view()->get_ui_interface()->error(_("Unable to remove vertex, internal error, please report this bug"));
1273         }
1274
1275         refresh_ducks(false);
1276 }
1277
1278 void
1279 StateBLine_Context::popup_handle_menu(synfig::ValueNode_Const::Handle value_node)
1280 {
1281         menu.items().clear();
1282
1283         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1284
1285         if(bline_point.get_split_tangent_flag())
1286                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Merge Tangents"),
1287                         sigc::bind(
1288                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_attach_handle),
1289                                 value_node
1290                         )
1291                 ));
1292         else
1293                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Split Tangents"),
1294                         sigc::bind(
1295                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_detach_handle),
1296                                 value_node
1297                         )
1298                 ));
1299
1300         menu.popup(0,0);
1301 }
1302
1303 void
1304 StateBLine_Context::bline_detach_handle(synfig::ValueNode_Const::Handle value_node)
1305 {
1306         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1307         bline_point.set_split_tangent_flag(true);
1308         bline_point.set_tangent2(bline_point.get_tangent1());
1309         value_node->set_value(bline_point);
1310         refresh_ducks(false);
1311 }
1312
1313 void
1314 StateBLine_Context::bline_attach_handle(synfig::ValueNode_Const::Handle value_node)
1315 {
1316         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1317         bline_point.set_tangent1((bline_point.get_tangent1()+bline_point.get_tangent2())*0.5);
1318         bline_point.set_split_tangent_flag(false);
1319         value_node->set_value(bline_point);
1320         refresh_ducks(false);
1321 }