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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_draw.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include <gtkmm/dialog.h>
  33 #include <gtkmm/entry.h>
  34
  35 #include <synfig/valuenode_dynamiclist.h>
  36
  37 #include "state_draw.h"
  38 #include "state_stroke.h"
  39 #include "canvasview.h"
  40 #include "workarea.h"
  41 #include "app.h"
  42 #include <synfig/valuenode_bline.h>
  43 #include <synfig/valuenode_composite.h>
  44 #include <ETL/hermite>
  45 #include <ETL/calculus>
  46 #include <utility>
  47 #include "event_mouse.h"
  48 #include "event_layerclick.h"
  49 #include "toolbox.h"
  50
  51 #include <synfigapp/blineconvert.h>
  52 #include <synfigapp/main.h>
  53
  54 #include <ETL/gaussian>
  55 #include "dialog_tooloptions.h"
  56
  57 #include <gtkmm/table.h>
  58 #include <gtkmm/label.h>
  59 #include <gtkmm/button.h>
  60 #include <gtkmm/checkbutton.h>
  61 #include <gtkmm/scale.h>
  62 #include <sigc++/connection.h>
  63
  64 #endif
  65
  66 /* === U S I N G =========================================================== */
  67
  68 using namespace std;
  69 using namespace etl;
  70 using namespace synfig;
  71 using namespace studio;
  72
  73 /* === M A C R O S ========================================================= */
  74
  75 /* === G L O B A L S ======================================================= */
  76
  77 StateDraw studio::state_draw;
  78
  79 /* === C L A S S E S & S T R U C T S ======================================= */
  80
  81 class studio::StateDraw_Context : public sigc::trackable
  82 {
  83         typedef etl::smart_ptr<std::list<synfig::Point> > StrokeData;
  84         typedef etl::smart_ptr<std::list<synfig::Real> > WidthData;
  85
  86         typedef list< pair<StrokeData,WidthData> > StrokeQueue;
  87
  88         StrokeQueue stroke_queue;
  89
  90
  91         etl::handle<CanvasView> canvas_view_;
  92         CanvasView::IsWorking is_working;
  93
  94         bool prev_table_status;
  95         bool loop_;
  96         bool prev_workarea_layer_status_;
  97
  98         int nested;
  99         SigC::Connection process_queue_connection;
 100
 101         ValueNode_BLine::Handle last_stroke;
 102
 103         Gtk::Menu menu;
 104
 105         //Duckmatic::Push duckmatic_push;
 106
 107         std::list< etl::smart_ptr<std::list<synfig::Point> > > stroke_list;
 108
 109         void refresh_ducks();
 110
 111         Duckmatic::Type old_duckmask;
 112
 113         void fill_last_stroke();
 114
 115         Smach::event_result new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius);
 116
 117         Smach::event_result new_region(std::list<synfig::BLinePoint> bline,synfig::Real radius);
 118
 119         Smach::event_result extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop);
 120         Smach::event_result extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop);
 121         void reverse_bline(std::list<synfig::BLinePoint> &bline);
 122
 123         synfigapp::Settings& settings;
 124
 125         Gtk::Table options_table;
 126         Gtk::CheckButton checkbutton_pressure_width;
 127         Gtk::CheckButton checkbutton_round_ends;
 128         Gtk::CheckButton checkbutton_auto_loop;
 129         Gtk::CheckButton checkbutton_auto_connect;
 130         Gtk::CheckButton checkbutton_region_only;
 131         Gtk::Button button_fill_last_stroke;
 132
 133         //pressure spinner and such
 134         Gtk::Adjustment  adj_min_pressure;
 135         Gtk::SpinButton  spin_min_pressure;
 136         Gtk::CheckButton check_min_pressure;
 137
 138         Gtk::Adjustment  adj_feather;
 139         Gtk::SpinButton  spin_feather;
 140
 141         Gtk::Adjustment  adj_globalthres;
 142         Gtk::SpinButton  spin_globalthres;
 143
 144         Gtk::Adjustment  adj_localthres;
 145         Gtk::CheckButton check_localerror;
 146         void UpdateErrorBox();  //switches the stuff if need be :)
 147
 148         //Added by Adrian - data drive HOOOOO
 149         synfigapp::BLineConverter blineconv;
 150
 151 public:
 152         bool get_pressure_width_flag()const { return checkbutton_pressure_width.get_active(); }
 153         void set_pressure_width_flag(bool x) { return checkbutton_pressure_width.set_active(x); }
 154
 155         bool get_auto_loop_flag()const { return checkbutton_auto_loop.get_active(); }
 156         void set_auto_loop_flag(bool x) { return checkbutton_auto_loop.set_active(x); }
 157
 158         bool get_auto_connect_flag()const { return checkbutton_auto_connect.get_active(); }
 159         void set_auto_connect_flag(bool x) { return checkbutton_auto_connect.set_active(x); }
 160
 161         bool get_region_only_flag()const { return checkbutton_region_only.get_active(); }
 162         void set_region_only_flag(bool x) { return checkbutton_region_only.set_active(x); }
 163
 164         Real get_min_pressure() const { return adj_min_pressure.get_value(); }
 165         void set_min_pressure(Real x) { return adj_min_pressure.set_value(x); }
 166
 167         Real get_feather() const { return adj_feather.get_value(); }
 168         void set_feather(Real x) { return adj_feather.set_value(x); }
 169
 170         Real get_gthres() const { return adj_globalthres.get_value(); }
 171         void set_gthres(Real x) { return adj_globalthres.set_value(x); }
 172
 173         Real get_lthres() const { return adj_localthres.get_value(); }
 174         void set_lthres(Real x) { return adj_localthres.set_value(x); }
 175
 176         bool get_local_error_flag() const { return check_localerror.get_active(); }
 177         void set_local_error_flag(bool x) { check_localerror.set_active(x); }
 178
 179         bool get_min_pressure_flag()const { return check_min_pressure.get_active(); }
 180         void set_min_pressure_flag(bool x) { check_min_pressure.set_active(x); }
 181
 182         void load_settings();
 183         void save_settings();
 184
 185         Smach::event_result event_stop_handler(const Smach::event& x);
 186
 187         Smach::event_result event_refresh_handler(const Smach::event& x);
 188
 189         Smach::event_result event_mouse_down_handler(const Smach::event& x);
 190
 191         Smach::event_result event_stroke(const Smach::event& x);
 192         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 193         void refresh_tool_options();
 194
 195         Smach::event_result process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag=false);
 196
 197         bool process_queue();
 198
 199
 200         StateDraw_Context(CanvasView* canvas_view);
 201
 202         ~StateDraw_Context();
 203
 204         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 205         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 206         synfig::Time get_time()const { return get_canvas_interface()->get_time(); }
 207         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 208         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 209
 210         //void on_user_click(synfig::Point point);
 211
 212 //      bool run();
 213 };      // END of class StateDraw_Context
 214
 215
 216 /* === M E T H O D S ======================================================= */
 217
 218 StateDraw::StateDraw():
 219         Smach::state<StateDraw_Context>("draw")
 220 {
 221         insert(event_def(EVENT_STOP,&StateDraw_Context::event_stop_handler));
 222         insert(event_def(EVENT_REFRESH,&StateDraw_Context::event_refresh_handler));
 223         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateDraw_Context::event_mouse_down_handler));
 224         insert(event_def(EVENT_WORKAREA_STROKE,&StateDraw_Context::event_stroke));
 225         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateDraw_Context::event_refresh_tool_options));
 226 }
 227
 228 StateDraw::~StateDraw()
 229 {
 230 }
 231
 232
 233 void
 234 StateDraw_Context::load_settings()
 235 {
 236         String value;
 237
 238         if(settings.get_value("draw.pressure_width",value) && value=="0")
 239                 set_pressure_width_flag(false);
 240         else
 241                 set_pressure_width_flag(true);
 242
 243         if(settings.get_value("draw.auto_loop",value) && value=="0")
 244                 set_auto_loop_flag(false);
 245         else
 246                 set_auto_loop_flag(true);
 247
 248         if(settings.get_value("draw.auto_connect",value) && value=="0")
 249                 set_auto_connect_flag(false);
 250         else
 251                 set_auto_connect_flag(true);
 252
 253         if(settings.get_value("draw.region_only",value) && value=="1")
 254                 set_region_only_flag(true);
 255         else
 256                 set_region_only_flag(false);
 257
 258         if(settings.get_value("draw.min_pressure_on",value) && value=="0")
 259                 set_min_pressure_flag(false);
 260         else
 261                 set_min_pressure_flag(true);
 262
 263         if(settings.get_value("draw.min_pressure",value))
 264         {
 265                 Real n = atof(value.c_str());
 266                 set_min_pressure(n);
 267         }else
 268                 set_min_pressure(0);
 269
 270         if(settings.get_value("draw.feather",value))
 271         {
 272                 Real n = atof(value.c_str());
 273                 set_feather(n);
 274         }else
 275                 set_feather(0);
 276
 277         if(settings.get_value("draw.gthreshold",value))
 278         {
 279                 Real n = atof(value.c_str());
 280                 set_gthres(n);
 281         }
 282
 283         if(settings.get_value("draw.lthreshold",value))
 284         {
 285                 Real n = atof(value.c_str());
 286                 set_lthres(n);
 287         }
 288
 289         if(settings.get_value("draw.localize",value) && value == "1")
 290                 set_local_error_flag(true);
 291         else
 292                 set_local_error_flag(false);
 293 }
 294
 295 void
 296 StateDraw_Context::save_settings()
 297 {
 298         settings.set_value("draw.pressure_width",get_pressure_width_flag()?"1":"0");
 299         settings.set_value("draw.auto_loop",get_auto_loop_flag()?"1":"0");
 300         settings.set_value("draw.auto_connect",get_auto_connect_flag()?"1":"0");
 301         settings.set_value("draw.region_only",get_region_only_flag()?"1":"0");
 302         settings.set_value("draw.min_pressure",strprintf("%f",get_min_pressure()));
 303         settings.set_value("draw.feather",strprintf("%f",get_feather()));
 304         settings.set_value("draw.min_pressure_on",get_min_pressure_flag()?"1":"0");
 305         settings.set_value("draw.gthreshold",strprintf("%f",get_gthres()));
 306         settings.set_value("draw.lthreshold",strprintf("%f",get_lthres()));
 307         settings.set_value("draw.localize",get_local_error_flag()?"1":"0");
 308 }
 309
 310 StateDraw_Context::StateDraw_Context(CanvasView* canvas_view):
 311         canvas_view_(canvas_view),
 312         is_working(*canvas_view),
 313         loop_(false),
 314         prev_workarea_layer_status_(get_work_area()->allow_layer_clicks),
 315         settings(synfigapp::Main::get_selected_input_device()->settings()),
 316         checkbutton_pressure_width(_("Pressure Width")),
 317         checkbutton_auto_loop(_("Auto Loop")),
 318         checkbutton_auto_connect(_("Auto Connect")),
 319         checkbutton_region_only(_("Create Region Only")),
 320         button_fill_last_stroke(_("Fill Last Stroke")),
 321         adj_min_pressure(0,0,1,0.01,0.1),
 322         spin_min_pressure(adj_min_pressure,0.1,3),
 323         check_min_pressure(_("Min Pressure")),
 324         adj_feather(0,0,10000,0.01,0.1),
 325         spin_feather(adj_feather,0.01,4),
 326         adj_globalthres(.70f,0.01,10000,0.01,0.1),
 327         spin_globalthres(adj_globalthres,0.01,3),
 328         adj_localthres(20,1,100000,0.1,1),
 329         check_localerror(_("LocalError"))
 330
 331 {
 332         synfig::info("STATE SKETCH: entering state");
 333
 334         nested=0;
 335         load_settings();
 336
 337         UpdateErrorBox();
 338
 339         //options_table.attach(*manage(new Gtk::Label(_("Draw Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 340         options_table.attach(checkbutton_pressure_width, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 341         options_table.attach(checkbutton_auto_loop, 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 342         options_table.attach(checkbutton_auto_connect, 0, 2, 3, 4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 343         options_table.attach(checkbutton_region_only, 0, 2, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 344
 345         options_table.attach(check_min_pressure, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 346         options_table.attach(spin_min_pressure, 0, 2, 6, 7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 347
 348         options_table.attach(*manage(new Gtk::Label(_("Feather"))), 0, 1, 7, 8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 349         options_table.attach(spin_feather, 1, 2, 7, 8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 350
 351         options_table.attach(check_localerror, 0, 2, 8, 9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 352         options_table.attach(*manage(new Gtk::Label(_("Smooth"))), 0, 1, 9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 353         options_table.attach(spin_globalthres, 1, 2, 9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 354
 355         //options_table.attach(button_fill_last_stroke, 0, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 356
 357         button_fill_last_stroke.signal_pressed().connect(sigc::mem_fun(*this,&StateDraw_Context::fill_last_stroke));
 358         check_localerror.signal_toggled().connect(sigc::mem_fun(*this,&StateDraw_Context::UpdateErrorBox));
 359
 360         options_table.show_all();
 361         refresh_tool_options();
 362         //App::dialog_tool_options->set_widget(options_table);
 363         App::dialog_tool_options->present();
 364
 365
 366         old_duckmask=get_work_area()->get_type_mask();
 367         get_work_area()->set_type_mask(Duck::TYPE_ALL-Duck::TYPE_TANGENT-Duck::TYPE_WIDTH);
 368
 369         // Turn off layer clicking
 370         get_work_area()->allow_layer_clicks=false;
 371
 372         // Turn off duck clicking
 373         get_work_area()->allow_duck_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         // Hide the time bar
 386         get_canvas_view()->hide_timebar();
 387
 388         // Connect a signal
 389         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateDraw_Context::on_user_click));
 390
 391         get_canvas_view()->work_area->set_cursor(Gdk::PENCIL);
 392
 393         App::toolbox->refresh();
 394
 395         refresh_ducks();
 396 }
 397
 398
 399 void StateDraw_Context::UpdateErrorBox()
 400 {
 401         if(get_local_error_flag())
 402         {
 403                 spin_globalthres.set_adjustment(adj_localthres);
 404                 spin_globalthres.set_value(adj_localthres.get_value());
 405                 spin_globalthres.set_increments(0.1,1);
 406         }else
 407         {
 408                 spin_globalthres.set_adjustment(adj_globalthres);
 409                 spin_globalthres.set_value(adj_globalthres.get_value());
 410                 spin_globalthres.set_increments(0.01,.1);
 411         }
 412
 413         spin_globalthres.update();
 414 }
 415
 416 void
 417 StateDraw_Context::refresh_tool_options()
 418 {
 419         App::dialog_tool_options->clear();
 420         App::dialog_tool_options->set_widget(options_table);
 421         App::dialog_tool_options->set_local_name(_("Draw Tool"));
 422         App::dialog_tool_options->set_name("draw");
 423
 424         App::dialog_tool_options->add_button(
 425                 Gtk::StockID("synfig-fill"),
 426                 _("Fill Last Stroke")
 427         )->signal_clicked().connect(
 428                 sigc::mem_fun(
 429                         *this,
 430                         &StateDraw_Context::fill_last_stroke
 431                 )
 432         );
 433
 434 }
 435
 436 Smach::event_result
 437 StateDraw_Context::event_refresh_tool_options(const Smach::event& x)
 438 {
 439         refresh_tool_options();
 440         return Smach::RESULT_ACCEPT;
 441 }
 442
 443 StateDraw_Context::~StateDraw_Context()
 444 {
 445         save_settings();
 446
 447         App::dialog_tool_options->clear();
 448
 449         get_work_area()->set_type_mask(old_duckmask);
 450
 451         get_canvas_view()->work_area->reset_cursor();
 452
 453         // Restore layer clicking
 454         get_work_area()->allow_layer_clicks=prev_workarea_layer_status_;
 455
 456         // Restore duck clicking
 457         get_work_area()->allow_duck_clicks=true;
 458
 459         // Show the time bar
 460         if(get_canvas_view()->get_canvas()->rend_desc().get_time_start()!=get_canvas_view()->get_canvas()->rend_desc().get_time_end())
 461                 get_canvas_view()->show_timebar();
 462
 463         // Bring back the tables if they were out before
 464         if(prev_table_status)get_canvas_view()->show_tables();
 465
 466         // Refresh the work area
 467         get_work_area()->queue_draw();
 468
 469         App::toolbox->refresh();
 470 }
 471
 472 Smach::event_result
 473 StateDraw_Context::event_stop_handler(const Smach::event& x)
 474 {
 475         throw Smach::egress_exception();
 476 }
 477
 478 Smach::event_result
 479 StateDraw_Context::event_refresh_handler(const Smach::event& x)
 480 {
 481         refresh_ducks();
 482         return Smach::RESULT_ACCEPT;
 483 }
 484
 485 Smach::event_result
 486 StateDraw_Context::event_mouse_down_handler(const Smach::event& x)
 487 {
 488         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 489         switch(event.button)
 490         {
 491         case BUTTON_LEFT:
 492                 {
 493                         // Enter the stroke state to get the stroke
 494                         get_canvas_view()->get_smach().push_state(&state_stroke);
 495                         return Smach::RESULT_ACCEPT;
 496                 }
 497
 498         case BUTTON_RIGHT: // Intercept the right-button click to short-circut the pop-up menu
 499                 return Smach::RESULT_ACCEPT;
 500
 501         default:
 502                 return Smach::RESULT_OK;
 503         }
 504 }
 505
 506 #define SIMILAR_TANGENT_THRESHOLD       (0.2)
 507
 508 struct debugclass
 509 {
 510         synfig::String x;
 511         debugclass(const synfig::String &x):x(x)
 512         {
 513 //              synfig::warning(">>>>>>>>>>>>>>>>>>> "+x);
 514         }
 515         ~debugclass()
 516         {
 517 //              synfig::warning("<<<<<<<<<<<<<<<<<<< "+x);
 518         }
 519 };
 520
 521 struct DepthCounter
 522 {
 523         int &i;
 524         DepthCounter(int &i):i(i) { i++; }
 525         ~DepthCounter() { i--; }
 526 };
 527
 528 Smach::event_result
 529 StateDraw_Context::event_stroke(const Smach::event& x)
 530 {
 531 //      debugclass debugger("StateDraw_Context::event_stroke(const Smach::event& x)");
 532
 533         const EventStroke& event(*reinterpret_cast<const EventStroke*>(&x));
 534
 535         assert(event.stroke_data);
 536
 537         get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
 538
 539         if(nested==0)
 540         {
 541                 DirtyTrap dirty_trap(get_work_area());
 542                 Smach::event_result result;
 543                 result=process_stroke(event.stroke_data,event.width_data,event.modifier&Gdk::CONTROL_MASK || event.modifier&Gdk::BUTTON2_MASK);
 544                 process_queue();
 545                 return result;
 546         }
 547
 548         stroke_queue.push_back(pair<StrokeData,WidthData>(event.stroke_data,event.width_data));
 549
 550         return Smach::RESULT_ACCEPT;
 551 }
 552
 553 bool
 554 StateDraw_Context::process_queue()
 555 {
 556 //      debugclass debugger("StateDraw_Context::process_queue()");
 557         if(nested)
 558                 return true;
 559         DepthCounter depth_counter(nested);
 560         while(!stroke_queue.empty())
 561         {
 562                 pair<StrokeData,WidthData> front(stroke_queue.front());
 563                 process_stroke(front.first,front.second);
 564                 stroke_queue.pop_front();
 565         }
 566         return false;
 567 }
 568
 569 Smach::event_result
 570 StateDraw_Context::process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag)
 571 {
 572 //      debugclass debugger("StateDraw_Context::process_stroke");
 573         DepthCounter depth_counter(nested);
 574
 575         const float radius(synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc())+(abs(get_work_area()->get_pw())+abs(get_work_area()->get_ph()))*5);
 576
 577
 578         // If we aren't using pressure width,
 579         // then set all the width to 1
 580         if(!get_pressure_width_flag())
 581         {
 582                 std::list<synfig::Real>::iterator iter;
 583                 for(iter=width_data->begin();iter!=width_data->end();++iter)
 584                 {
 585                         *iter=1.0;
 586                 }
 587         }
 588
 589         //get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
 590         //stroke_list.push_back(event.stroke_data);
 591         //refresh_ducks();
 592
 593         std::list<synfig::BLinePoint> bline;
 594         bool loop_bline_flag(false);
 595
 596         //Changed by Adrian - use resident class :)
 597         //synfigapp::convert_stroke_to_bline(bline, *event.stroke_data,*event.width_data, synfigapp::Main::get_bline_width());
 598         blineconv.width = synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc());
 599
 600         if(get_local_error_flag())
 601         {
 602                 float pw = get_work_area()->get_pw();
 603                 float ph = get_work_area()->get_ph();
 604
 605                 blineconv.pixelwidth = sqrt(pw*pw+ph*ph);
 606                 blineconv.smoothness = get_lthres();
 607         }else
 608         {
 609                 blineconv.pixelwidth = 1;
 610                 blineconv.smoothness = get_gthres();
 611         }
 612
 613         blineconv(bline,*stroke_data,*width_data);
 614
 615         //Postprocess to require minimum pressure
 616         if(get_min_pressure_flag())
 617         {
 618                 synfigapp::BLineConverter::EnforceMinWidth(bline,get_min_pressure());
 619         }
 620
 621         // If the start and end points are similar, then make then the same point
 622         if(get_auto_loop_flag())
 623         if(bline.size()>2&&(bline.front().get_vertex()-bline.back().get_vertex()).mag()<=radius)
 624         {
 625                 loop_bline_flag=true;
 626                 Vector tangent;
 627                 Real width(0);
 628
 629                 while(bline.size()>2&&(bline.front().get_vertex()-bline.back().get_vertex()).mag()<=radius)
 630                 {
 631                         tangent=bline.back().get_tangent1();
 632                         width=bline.back().get_width();
 633                         bline.pop_back();
 634                 }
 635
 636                 if(abs(bline.front().get_tangent1().norm()*tangent.norm().perp())>SIMILAR_TANGENT_THRESHOLD)
 637                 {
 638                         // If the tangents are not similar, then
 639                         // split the tangents
 640                         bline.front().set_split_tangent_flag(true);
 641                         bline.front().set_tangent1(tangent);
 642                 }
 643                 else
 644                 {
 645                         // If the tangents are similar, then set the tangent
 646                         // to the average of the two
 647                         bline.front().set_tangent((tangent+bline.front().get_tangent1())*0.5f);
 648                 }
 649
 650                 // Add the widths of the two points
 651                 {
 652                         Real width(bline.front().get_width()+width);
 653                         width=width<=1?width:1;
 654                         bline.front().set_width(width);
 655                 }
 656         }
 657
 658         // If the bline only has once blinepoint, then there is nothing to do.
 659         if(bline.size()<=1)
 660                 return Smach::RESULT_OK;
 661
 662         if(region_flag)
 663                 return new_region(bline,radius);
 664
 665         return new_bline(bline,loop_bline_flag,radius);
 666 }
 667
 668 Smach::event_result
 669 StateDraw_Context::new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius)
 670 {
 671         // Create the action group
 672         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Sketch BLine"));
 673
 674         bool shift_offset = false;
 675         Vector shift_offset_vector;
 676         bool join_start_no_extend=false,join_finish_no_extend=false;
 677         synfigapp::ValueDesc start_duck_value_desc,finish_duck_value_desc;
 678         bool extend_start=false,extend_finish=false,complete_loop=false;
 679         bool extend_start_join_same=false,extend_start_join_different=false;
 680         bool extend_finish_join_same=false,extend_finish_join_different=false;
 681         int start_duck_index,finish_duck_index;
 682         ValueNode_BLine::Handle start_duck_value_node_bline=NULL,finish_duck_value_node_bline=NULL;
 683
 684         // Find any ducks at the start or end that we might attach to
 685         // (this used to only run if we aren't a loop - ie. !loop_bline_flag
 686         // but having loops auto-connect can be useful as well)
 687         if(get_auto_connect_flag())
 688         {
 689                 etl::handle<Duck> start_duck(get_work_area()->find_duck(bline.front().get_vertex(),radius,Duck::TYPE_VERTEX));
 690                 etl::handle<Duck> finish_duck(get_work_area()->find_duck(bline.back().get_vertex(),radius,Duck::TYPE_VERTEX));
 691
 692                 // check whether the start of the new line extends an
 693                 // existing line.  this is only the case if the new
 694                 // line isn't a self-contained loop, and if the new
 695                 // line starts at one of the ends of an existing line
 696                 if(start_duck)do
 697                 {
 698                         if(!(start_duck_value_desc=start_duck->get_value_desc()))break;
 699                         if(loop_bline_flag)break;
 700                         if(!start_duck_value_desc.parent_is_value_node())break;
 701                         start_duck_index=start_duck_value_desc.get_index();
 702                         start_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(start_duck_value_desc.get_parent_value_node());
 703
 704                         // don't extend looped blines
 705                         if(start_duck_value_node_bline&&!start_duck_value_node_bline->get_loop()&&
 706                            (start_duck_index==0||start_duck_index==start_duck_value_node_bline->link_count()-1))
 707                         {
 708                                 extend_start=true;
 709                                 shift_offset=true;
 710                                 shift_offset_vector=start_duck->get_origin();
 711                         }
 712                 }while(0);
 713
 714                 // check whether the end of the new line extends an
 715                 // existing line.  this is only the case if the new
 716                 // line isn't a self-contained loop, and if the new
 717                 // line ends at one of the ends of an existing line
 718                 if(finish_duck)do
 719                 {
 720                         if(!(finish_duck_value_desc=finish_duck->get_value_desc()))break;
 721                         if(loop_bline_flag)break;
 722                         if(!finish_duck_value_desc.parent_is_value_node())break;
 723                         finish_duck_index=finish_duck_value_desc.get_index();
 724                         finish_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(finish_duck_value_desc.get_parent_value_node());
 725
 726                         // don't extend looped blines
 727                         if(finish_duck_value_node_bline&&!finish_duck_value_node_bline->get_loop()&&
 728                            (finish_duck_index==0||finish_duck_index==finish_duck_value_node_bline->link_count()-1))
 729                                 if(extend_start)
 730                                 {
 731                                         // we've started and finished drawing at the end of a bline.  we can't
 732                                         // extend both blines, so unless we started and finished at the 2 ends
 733                                         // of the same bline, only extend the one we started on
 734                                         if(start_duck_value_node_bline==finish_duck_value_node_bline)
 735                                                 complete_loop=extend_finish=true;
 736                                 }else{
 737                                         extend_finish=true;
 738                                         shift_offset=true;
 739                                         shift_offset_vector=finish_duck->get_origin();
 740                                 }
 741                 }while(0);
 742
 743                 // if the new line's start didn't extend an existing line,
 744                 // check whether it needs to be linked to an existing duck
 745                 if(!extend_start&&start_duck&&start_duck_value_desc) {
 746                         switch(start_duck_value_desc.get_value_type())
 747                         {
 748                         case synfig::ValueBase::TYPE_BLINEPOINT:
 749                                 start_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_desc.get_value_node()),0);
 750                                 // fall through
 751                         case synfig::ValueBase::TYPE_VECTOR:
 752                                 if (shift_offset && shift_offset_vector != start_duck->get_origin())
 753                                         break;
 754                                 shift_offset = true;
 755                                 shift_offset_vector = start_duck->get_origin();
 756                                 get_canvas_interface()->auto_export(start_duck_value_desc);
 757                                 if (extend_finish)
 758                                         if(start_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 759                                                 extend_finish_join_same=true;
 760                                         else
 761                                                 extend_finish_join_different=true;
 762                                 else
 763                                         join_start_no_extend=true;
 764                                 // fall through
 765                         default:break;
 766                         }
 767                 }
 768
 769                 // if the new line's end didn't extend an existing line,
 770                 // check whether it needs to be linked to an existing duck
 771                 if(!extend_finish&&finish_duck&&finish_duck_value_desc)
 772                         switch(finish_duck_value_desc.get_value_type())
 773                         {
 774                         case synfig::ValueBase::TYPE_BLINEPOINT:
 775                                 finish_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_desc.get_value_node()),0);
 776                                 // fall through
 777                         case synfig::ValueBase::TYPE_VECTOR:
 778                                 if (shift_offset && shift_offset_vector != finish_duck->get_origin())
 779                                         break;
 780                                 shift_offset = true;
 781                                 shift_offset_vector = finish_duck->get_origin();
 782                                 get_canvas_interface()->auto_export(finish_duck_value_desc);
 783                                 if(extend_start)
 784                                         if(finish_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 785                                                 extend_start_join_same=true;
 786                                         else
 787                                                 extend_start_join_different=true;
 788                                 else
 789                                         join_finish_no_extend=true;
 790                                 // fall through
 791                         default:break;
 792                         }
 793         }
 794
 795         ValueNode_BLine::Handle value_node;
 796         std::list<synfig::BLinePoint> trans_bline;
 797
 798         {
 799                 std::list<synfig::BLinePoint>::iterator iter;
 800                 const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 801
 802                 for(iter=bline.begin();iter!=bline.end();++iter)
 803                 {
 804                         BLinePoint bline_point(*iter);
 805                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 806
 807                         bline_point.set_tangent1(
 808                                 transform.unperform(
 809                                         bline_point.get_tangent1()+bline_point.get_vertex()
 810                                 ) -new_vertex
 811                         );
 812
 813                         bline_point.set_tangent2(
 814                                 transform.unperform(
 815                                         bline_point.get_tangent2()+bline_point.get_vertex()
 816                                 ) -new_vertex
 817                         );
 818
 819                         if (shift_offset)
 820                                 new_vertex=new_vertex-shift_offset_vector;
 821
 822                         bline_point.set_vertex(new_vertex);
 823
 824                         trans_bline.push_back(bline_point);
 825                 }
 826                 value_node=ValueNode_BLine::create(synfig::ValueBase(trans_bline,loop_bline_flag));
 827         }
 828
 829         Smach::event_result result;
 830         synfig::ValueNode_DynamicList::ListEntry source;
 831         int target_index;
 832
 833         // the new line's start extends an existing line
 834         if(extend_start)
 835         {
 836                 if(complete_loop)trans_bline.pop_back();
 837                 trans_bline.pop_front();
 838                 if(start_duck_index==0)
 839                 {       // We need to reverse the BLine first.
 840                         reverse_bline(trans_bline);
 841                         result=extend_bline_from_begin(start_duck_value_node_bline,trans_bline,complete_loop);
 842                         source=start_duck_value_node_bline->list.front();
 843                         target_index=trans_bline.size()+finish_duck_index;
 844                 }
 845                 else
 846                 {
 847                         result=extend_bline_from_end(start_duck_value_node_bline,trans_bline,complete_loop);
 848                         source=start_duck_value_node_bline->list.back();
 849                         target_index=finish_duck_index;
 850                 }
 851
 852                 if(extend_start_join_different)
 853                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 854                                 set_link(0,finish_duck_value_desc.get_value_node());
 855                 else if(extend_start_join_same)
 856                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 857                                 set_link(0,synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_node_bline->
 858                                                                                                         list[target_index].value_node),0).get_value_node());
 859                 return result;
 860         }
 861
 862         // the new line's end extends an existing line
 863         if(extend_finish)
 864         {       // SPECIAL CASE -- EXTENSION
 865                 trans_bline.pop_back();
 866                 if(finish_duck_index==0)
 867                 {
 868                         result=extend_bline_from_begin(finish_duck_value_node_bline,trans_bline,false);
 869                         source=finish_duck_value_node_bline->list.front();
 870                         target_index=trans_bline.size()+start_duck_index;
 871                 }
 872                 else
 873                 {       // We need to reverse the BLine first.
 874                         reverse_bline(trans_bline);
 875                         result=extend_bline_from_end(finish_duck_value_node_bline,trans_bline,false);
 876                         source=finish_duck_value_node_bline->list.back();
 877                         target_index=start_duck_index;
 878                 }
 879
 880                 if(extend_finish_join_different)
 881                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 882                                 set_link(0,start_duck_value_desc.get_value_node());
 883                 else if(extend_finish_join_same)
 884                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 885                                 set_link(0,synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_node_bline->
 886                                                                                                         list[target_index].value_node),0).get_value_node());
 887                 return result;
 888         }
 889
 890         if (join_start_no_extend)
 891                 LinkableValueNode::Handle::cast_dynamic(value_node->list.front().value_node)->
 892                   set_link(0,start_duck_value_desc.get_value_node());
 893
 894         if (join_finish_no_extend)
 895                 LinkableValueNode::Handle::cast_dynamic(value_node->list.back().value_node)->
 896                   set_link(0,finish_duck_value_desc.get_value_node());
 897
 898         // Create the layer
 899         {
 900                 Layer::Handle layer;
 901                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
 902                 int depth(0);
 903
 904                 // we are temporarily using the layer to hold something
 905                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 906                 if(layer)
 907                 {
 908                         depth=layer->get_depth();
 909                         canvas=layer->get_canvas();
 910                 }
 911
 912                 //int number(synfig::UniqueID().get_uid());
 913
 914                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 915
 916                 if(get_region_only_flag())
 917                         layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
 918                 else
 919                         layer=get_canvas_interface()->add_layer_to("outline",canvas,depth);
 920
 921                 if(get_feather())
 922                 {
 923                         layer->set_param("feather",get_feather());
 924                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 925                 }
 926                 assert(layer);
 927                 //layer->set_description(strprintf("Stroke %d",number));
 928                 //get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 929
 930                 if (shift_offset)
 931                         get_canvas_interface()->
 932                           change_value(synfigapp::ValueDesc(layer,"offset"),shift_offset_vector);
 933
 934                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 935
 936                 assert(action);
 937
 938                 action->set_param("canvas",get_canvas());
 939                 action->set_param("canvas_interface",get_canvas_interface());
 940                 action->set_param("layer",layer);
 941                 if(!action->set_param("param",String("bline")))
 942                         synfig::error("LayerParamConnect didn't like \"param\"");
 943                 if(!action->set_param("value_node",ValueNode::Handle(value_node)))
 944                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 945
 946                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 947                 {
 948                         get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
 949                         group.cancel();
 950                         //refresh_ducks();
 951                         return Smach::RESULT_ERROR;
 952                 }
 953                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
 954                 //refresh_ducks();
 955         }
 956
 957         last_stroke=value_node;
 958         return Smach::RESULT_ACCEPT;
 959 }
 960
 961 Smach::event_result
 962 StateDraw_Context::new_region(std::list<synfig::BLinePoint> bline, synfig::Real radius)
 963 {
 964         // Create the action group
 965         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Define Region"));
 966
 967         std::list<synfigapp::ValueDesc> vertex_list;
 968
 969         // First we need to come up with a rough list of
 970         // BLinePoints that we are going to be using to
 971         // define our region.
 972         {
 973                 std::list<synfig::BLinePoint>::iterator iter;
 974                 for(iter=bline.begin();iter!=bline.end();++iter)
 975                 {
 976                         etl::handle<Duck> duck(get_work_area()->find_duck(iter->get_vertex(),0,Duck::TYPE_VERTEX));
 977
 978                         if(!duck)
 979                         {
 980                                 synfig::info(__FILE__":%d: Nothing to enclose!",__LINE__);
 981                                 return Smach::RESULT_OK;
 982                         }
 983
 984
 985                         assert(duck->get_type()==Duck::TYPE_VERTEX);
 986
 987                         synfigapp::ValueDesc value_desc(duck->get_value_desc());
 988
 989                         if(!value_desc)
 990                         {
 991                                 synfig::info(__FILE__":%d: Got a hit, but no ValueDesc on this duck",__LINE__);
 992                                 continue;
 993                         }
 994
 995                         switch(value_desc.get_value_type())
 996                         {
 997                         case synfig::ValueBase::TYPE_BLINEPOINT:
 998                                 //if(vertex_list.empty() || value_desc!=vertex_list.back())
 999                                 vertex_list.push_back(value_desc);
1000                                 assert(vertex_list.back().is_valid());
1001
1002                                 break;
1003                         default:
1004                                 break;
1005                         }
1006                 }
1007         }
1008
1009         if(vertex_list.size()<=2)
1010         {
1011                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1012                 return Smach::RESULT_OK;
1013         }
1014
1015         assert(vertex_list.back().is_valid());
1016
1017         // Remove any duplicates
1018         {
1019         }
1020
1021         // Now we need to clean the list of vertices up
1022         // a bit. This includes inserting missing vertices
1023         // and removing extraneous ones.
1024         // We can do this in multiple passes.
1025         int i=0;
1026         for(bool done=false;!done && i<30;i++)
1027         {
1028                 // Set done to "true" for now. If
1029                 // any updates are performed, we will
1030                 // change it back to false.
1031                 done=true;
1032
1033                 std::list<synfigapp::ValueDesc>::iterator prev,iter,next;
1034                 prev=vertex_list.end();prev--;  // Set prev to the last ValueDesc
1035                 next=vertex_list.begin();
1036                 iter=next++; // Set iter to the first value desc, and next to the second
1037
1038                 for(;iter!=vertex_list.end();prev=iter,iter=next++)
1039                 {
1040                         synfigapp::ValueDesc value_prev(*prev);
1041                         synfigapp::ValueDesc value_desc(*iter);
1042                         synfigapp::ValueDesc value_next((next==vertex_list.end())?vertex_list.front():*next);
1043
1044                         assert(value_desc.is_valid());
1045                         assert(value_next.is_valid());
1046                         assert(value_prev.is_valid());
1047
1048                         //synfig::info("-------");
1049                         //synfig::info(__FILE__":%d: value_prev 0x%08X:%d",__LINE__,value_prev.get_parent_value_node().get(),value_prev.get_index());
1050                         //synfig::info(__FILE__":%d: value_desc 0x%08X:%d",__LINE__,value_desc.get_parent_value_node().get(),value_desc.get_index());
1051                         //synfig::info(__FILE__":%d: value_next 0x%08X:%d",__LINE__,value_next.get_parent_value_node().get(),value_next.get_index());
1052
1053                         /*
1054                         if(value_prev.parent_is_value_node() && value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1055                         {
1056                                 // Remove random extraneous vertices
1057                                 if(value_prev.get_parent_value_node()==value_next.get_parent_value_node() &&
1058                                         value_prev.get_parent_value_node()!=value_desc.get_parent_value_node())
1059                                 {
1060                                         DEBUGPOINT();
1061                                         vertex_list.erase(iter);
1062                                         done=false;
1063                                         break;
1064                                 }
1065                         }
1066                         */
1067
1068                         // Remove duplicate vertices
1069                         if(value_prev.get_value_node()==value_desc.get_value_node()
1070                                 || value_desc.get_value_node()==value_next.get_value_node())
1071                         {
1072                                 DEBUGPOINT();
1073                                 vertex_list.erase(iter);
1074                                 done=false;
1075                                 break;
1076                         }
1077                         if(value_prev.get_value_node()==value_next.get_value_node())
1078                         {
1079                                 DEBUGPOINT();
1080                                 vertex_list.erase(prev);
1081                                 done=false;
1082                                 break;
1083                         }
1084
1085                         if(value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1086                         if(value_desc.get_parent_value_node()==value_next.get_parent_value_node() && (next!=vertex_list.end()))
1087                         {
1088                                 // Fill in missing vertices
1089                                 if(value_desc.get_index()<value_next.get_index()-1)
1090                                 {
1091                                         DEBUGPOINT();
1092                                         vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()+1));
1093                                         done=false;
1094                                         break;
1095                                 }
1096                                 if(value_next.get_index()<value_desc.get_index()-1)
1097                                 {
1098                                         DEBUGPOINT();
1099                                         vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_next.get_index()+1));
1100                                         done=false;
1101                                         break;
1102                                 }
1103                         }
1104
1105                         // Ensure that connections
1106                         // between blines are properly
1107                         // connected
1108                         if(value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1109                         if(value_desc.get_parent_value_node()!=value_next.get_parent_value_node() &&
1110                                 value_desc.get_value_node()!=value_next.get_value_node())
1111                         {
1112                                 BLinePoint vertex(value_desc.get_value(get_time()).get(BLinePoint()));
1113                                 BLinePoint vertex_next(value_next.get_value(get_time()).get(BLinePoint()));
1114
1115                                 //synfig::info("--------");
1116                                 //synfig::info(__FILE__":%d: vertex: [%f, %f]",__LINE__,vertex.get_vertex()[0],vertex.get_vertex()[1]);
1117                                 //synfig::info(__FILE__":%d: vertex_next: [%f, %f]",__LINE__,vertex_next.get_vertex()[0],vertex_next.get_vertex()[1]);
1118
1119                                 if((vertex.get_vertex()-vertex_next.get_vertex()).mag_squared()<radius*radius)
1120                                 {
1121                                         DEBUGPOINT();
1122                                         ValueNode_Composite::Handle value_node;
1123                                         ValueNode_Composite::Handle value_node_next;
1124                                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node().clone());
1125                                         value_node_next=ValueNode_Composite::Handle::cast_dynamic(value_next.get_value_node().clone());
1126                                         if(!value_node || !value_node_next)
1127                                         {
1128                                                 synfig::info(__FILE__":%d: Unable to properly connect blines.",__LINE__);
1129                                                 continue;
1130                                         }
1131                                         DEBUGPOINT();
1132                                         value_node->set_link(5,value_node_next->get_link(5));
1133                                         value_node->set_link(3,ValueNode_Const::create(true));
1134
1135                                         get_canvas_interface()->auto_export(value_node);
1136                                         assert(value_node->is_exported());
1137                                         *iter=synfigapp::ValueDesc(get_canvas(),value_node->get_id());
1138                                         vertex_list.erase(next);
1139                                         done=false;
1140                                         break;
1141                                 }
1142                                 else
1143                                 {
1144                                         DEBUGPOINT();
1145                                         bool positive_trend(value_desc.get_index()>value_prev.get_index());
1146
1147                                         if(!positive_trend && value_desc.get_index()>0)
1148                                         {
1149                                                 DEBUGPOINT();
1150                                                 vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()-1));
1151                                                 done=false;
1152                                                 break;
1153                                         }
1154                                         if(positive_trend && value_desc.get_index()<LinkableValueNode::Handle::cast_static(value_desc.get_value_node())->link_count()-1)
1155                                         {
1156                                                 DEBUGPOINT();
1157                                                 vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()+1));
1158                                                 done=false;
1159                                                 break;
1160                                         }
1161                                 }
1162
1163                         }
1164                 }
1165         }
1166
1167         if(vertex_list.size()<=2)
1168         {
1169                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1170                 return Smach::RESULT_OK;
1171         }
1172
1173         ValueNode_BLine::Handle value_node_bline;
1174
1175         // Now we need to test for the trivial case,
1176         // which is where all of the vertices
1177         // come from one BLine.
1178         if(vertex_list.front().parent_is_linkable_value_node())
1179         {
1180                 bool trivial_case(true);
1181                 ValueNode::Handle trivial_case_value_node;
1182
1183                 trivial_case_value_node=vertex_list.front().get_parent_value_node();
1184
1185                 std::list<synfigapp::ValueDesc>::iterator iter;
1186                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1187                 {
1188                         if(trivial_case_value_node!=iter->get_parent_value_node())
1189                         {
1190                                 trivial_case=false;
1191                                 break;
1192                         }
1193                 }
1194                 if(trivial_case)
1195                         value_node_bline=ValueNode_BLine::Handle::cast_dynamic(trivial_case_value_node);
1196         }
1197
1198         // If we aren't the trivial case,
1199         // then go ahead and create the new
1200         // BLine value node
1201         if(!value_node_bline)
1202         {
1203                 value_node_bline=ValueNode_BLine::create();
1204
1205                 std::list<synfigapp::ValueDesc>::iterator iter;
1206                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1207                 {
1208                         // Ensure that the vertex is exported.
1209                         get_canvas_interface()->auto_export(*iter);
1210
1211                         value_node_bline->add(iter->get_value_node());
1212                         //value_node_bline->add(ValueNode_BLine::ListEntry(iter->get_value_node()));
1213                 }
1214
1215                 value_node_bline->set_loop(true);
1216         }
1217
1218         get_canvas_interface()->auto_export(value_node_bline);
1219
1220         // Now we create the region layer
1221         // Create the layer
1222         {
1223                 Layer::Handle layer;
1224                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
1225                 int depth(0);
1226
1227                 // we are temporarily using the layer to hold something
1228                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1229                 if(layer)
1230                 {
1231                         depth=layer->get_depth();
1232                         canvas=layer->get_canvas();
1233                 }
1234
1235                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1236
1237                 layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
1238                 assert(layer);
1239                 layer->set_param("color",synfigapp::Main::get_background_color());
1240                 if(get_feather())
1241                 {
1242                         layer->set_param("feather",get_feather());
1243                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
1244                 }
1245                 get_canvas_interface()->signal_layer_param_changed()(layer,"color");
1246
1247                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1248
1249                 assert(action);
1250
1251                 action->set_param("canvas",get_canvas());
1252                 action->set_param("canvas_interface",get_canvas_interface());
1253                 action->set_param("layer",layer);
1254                 if(!action->set_param("param",String("bline")))
1255                         synfig::error("LayerParamConnect didn't like \"param\"");
1256                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
1257                         synfig::error("LayerParamConnect didn't like \"value_node\"");
1258
1259                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1260                 {
1261                         get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1262                         group.cancel();
1263                         return Smach::RESULT_ERROR;
1264                 }
1265                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1266         }
1267
1268         return Smach::RESULT_ACCEPT;
1269 }
1270
1271 void
1272 StateDraw_Context::refresh_ducks()
1273 {
1274         get_canvas_view()->queue_rebuild_ducks();
1275 /*
1276         get_work_area()->clear_ducks();
1277
1278
1279         std::list< etl::smart_ptr<std::list<synfig::Point> > >::iterator iter;
1280
1281         for(iter=stroke_list.begin();iter!=stroke_list.end();++iter)
1282         {
1283                 get_work_area()->add_stroke(*iter);
1284         }
1285
1286         get_work_area()->queue_draw();
1287 */
1288 }
1289
1290
1291 Smach::event_result
1292 StateDraw_Context::extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1293 {
1294         // Create the action group
1295         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1296
1297         if (complete_loop)
1298         {
1299                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_loop"));
1300                 assert(action);
1301
1302                 action->set_param("canvas",get_canvas());
1303                 action->set_param("canvas_interface",get_canvas_interface());
1304                 action->set_param("value_node",ValueNode::Handle(value_node));
1305
1306                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1307                 {
1308                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1309                         group.cancel();
1310                         return Smach::RESULT_ERROR;
1311                 }
1312         }
1313
1314         std::list<synfig::BLinePoint>::reverse_iterator iter;
1315         for(iter=bline.rbegin();!(iter==bline.rend());++iter)
1316         {
1317                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1318
1319                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1320
1321                 assert(action);
1322                 synfigapp::ValueDesc value_desc(value_node,0);
1323
1324                 action->set_param("canvas",get_canvas());
1325                 action->set_param("canvas_interface",get_canvas_interface());
1326                 action->set_param("value_desc",value_desc);
1327                 if(!action->set_param("item",ValueNode::Handle(composite)))
1328                         synfig::error("ACTION didn't like \"item\"");
1329
1330                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1331                 {
1332                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1333                         group.cancel();
1334                         //refresh_ducks();
1335                         return Smach::RESULT_ERROR;
1336                 }
1337         }
1338         last_stroke=value_node;
1339         return Smach::RESULT_ACCEPT;
1340 }
1341
1342 Smach::event_result
1343 StateDraw_Context::extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1344 {
1345         // Create the action group
1346         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1347
1348         if (complete_loop)
1349         {
1350                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_loop"));
1351                 assert(action);
1352
1353                 action->set_param("canvas",get_canvas());
1354                 action->set_param("canvas_interface",get_canvas_interface());
1355                 action->set_param("value_node",ValueNode::Handle(value_node));
1356
1357                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1358                 {
1359                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1360                         group.cancel();
1361                         return Smach::RESULT_ERROR;
1362                 }
1363         }
1364
1365         std::list<synfig::BLinePoint>::iterator iter;
1366         for(iter=bline.begin();iter!=bline.end();++iter)
1367         {
1368                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1369
1370                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1371
1372                 assert(action);
1373                 synfigapp::ValueDesc value_desc(value_node,value_node->link_count());
1374
1375                 action->set_param("canvas",get_canvas());
1376                 action->set_param("canvas_interface",get_canvas_interface());
1377                 action->set_param("value_desc",value_desc);
1378                 if(!action->set_param("item",ValueNode::Handle(composite)))
1379                         synfig::error("ACTION didn't like \"item\"");
1380
1381                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1382                 {
1383                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1384                         group.cancel();
1385                         //refresh_ducks();
1386                         return Smach::RESULT_ERROR;
1387                 }
1388         }
1389         last_stroke=value_node;
1390         return Smach::RESULT_ACCEPT;
1391 }
1392
1393 void
1394 StateDraw_Context::reverse_bline(std::list<synfig::BLinePoint> &bline)
1395 {
1396         int i;
1397
1398         std::list<synfig::BLinePoint>::iterator iter,eiter;
1399         iter=bline.begin();
1400         eiter=bline.end();
1401         eiter--;
1402         for(i=0;i<(int)bline.size()/2;++iter,--eiter,i++)
1403         {
1404                 iter_swap(iter,eiter);
1405                 iter->reverse();
1406                 eiter->reverse();
1407         }
1408 }
1409
1410 void
1411 StateDraw_Context::fill_last_stroke()
1412 {
1413         if(!last_stroke)
1414                 return;
1415
1416         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Fill Stroke"));
1417
1418         Layer::Handle layer;
1419
1420         get_canvas_interface()->auto_export(last_stroke);
1421
1422         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1423
1424         layer=get_canvas_interface()->add_layer("region");
1425         assert(layer);
1426         layer->set_param("color",synfigapp::Main::get_background_color());
1427
1428         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1429
1430         assert(action);
1431
1432         action->set_param("canvas",get_canvas());
1433         action->set_param("canvas_interface",get_canvas_interface());
1434         action->set_param("layer",layer);
1435         if(!action->set_param("param",String("segment_list")))
1436                 synfig::error("LayerParamConnect didn't like \"param\"");
1437         if(!action->set_param("value_node",ValueNode::Handle(last_stroke)))
1438                 synfig::error("LayerParamConnect didn't like \"value_node\"");
1439
1440         if(!get_canvas_interface()->get_instance()->perform_action(action))
1441         {
1442                 get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1443                 group.cancel();
1444                 return;
1445         }
1446         get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1447 }