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

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