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;   // whether to loop new strokes which start and end in the same place
 129         Gtk::CheckButton checkbutton_auto_extend; // whether to extend existing lines
 130         Gtk::CheckButton checkbutton_auto_link;   // whether to link new ducks to existing ducks
 131         Gtk::CheckButton checkbutton_region_only;
 132         Gtk::Button button_fill_last_stroke;
 133
 134         //pressure spinner and such
 135         Gtk::Adjustment  adj_min_pressure;
 136         Gtk::SpinButton  spin_min_pressure;
 137         Gtk::CheckButton check_min_pressure;
 138
 139         Gtk::Adjustment  adj_feather;
 140         Gtk::SpinButton  spin_feather;
 141
 142         Gtk::Adjustment  adj_globalthres;
 143         Gtk::SpinButton  spin_globalthres;
 144
 145         Gtk::Adjustment  adj_localthres;
 146         Gtk::CheckButton check_localerror;
 147         void UpdateErrorBox();  //switches the stuff if need be :)
 148
 149         //Added by Adrian - data drive HOOOOO
 150         synfigapp::BLineConverter blineconv;
 151
 152 public:
 153         bool get_pressure_width_flag()const { return checkbutton_pressure_width.get_active(); }
 154         void set_pressure_width_flag(bool x) { return checkbutton_pressure_width.set_active(x); }
 155
 156         bool get_auto_loop_flag()const { return checkbutton_auto_loop.get_active(); }
 157         void set_auto_loop_flag(bool x) { return checkbutton_auto_loop.set_active(x); }
 158
 159         bool get_auto_extend_flag()const { return checkbutton_auto_extend.get_active(); }
 160         void set_auto_extend_flag(bool x) { return checkbutton_auto_extend.set_active(x); }
 161
 162         bool get_auto_link_flag()const { return checkbutton_auto_link.get_active(); }
 163         void set_auto_link_flag(bool x) { return checkbutton_auto_link.set_active(x); }
 164
 165         bool get_region_only_flag()const { return checkbutton_region_only.get_active(); }
 166         void set_region_only_flag(bool x) { return checkbutton_region_only.set_active(x); }
 167
 168         Real get_min_pressure() const { return adj_min_pressure.get_value(); }
 169         void set_min_pressure(Real x) { return adj_min_pressure.set_value(x); }
 170
 171         Real get_feather() const { return adj_feather.get_value(); }
 172         void set_feather(Real x) { return adj_feather.set_value(x); }
 173
 174         Real get_gthres() const { return adj_globalthres.get_value(); }
 175         void set_gthres(Real x) { return adj_globalthres.set_value(x); }
 176
 177         Real get_lthres() const { return adj_localthres.get_value(); }
 178         void set_lthres(Real x) { return adj_localthres.set_value(x); }
 179
 180         bool get_local_error_flag() const { return check_localerror.get_active(); }
 181         void set_local_error_flag(bool x) { check_localerror.set_active(x); }
 182
 183         bool get_min_pressure_flag()const { return check_min_pressure.get_active(); }
 184         void set_min_pressure_flag(bool x) { check_min_pressure.set_active(x); }
 185
 186         void load_settings();
 187         void save_settings();
 188
 189         Smach::event_result event_stop_handler(const Smach::event& x);
 190
 191         Smach::event_result event_refresh_handler(const Smach::event& x);
 192
 193         Smach::event_result event_mouse_down_handler(const Smach::event& x);
 194
 195         Smach::event_result event_stroke(const Smach::event& x);
 196         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 197         void refresh_tool_options();
 198
 199         Smach::event_result process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag=false);
 200
 201         bool process_queue();
 202
 203
 204         StateDraw_Context(CanvasView* canvas_view);
 205
 206         ~StateDraw_Context();
 207
 208         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 209         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 210         synfig::Time get_time()const { return get_canvas_interface()->get_time(); }
 211         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 212         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 213
 214         //void on_user_click(synfig::Point point);
 215
 216 //      bool run();
 217 };      // END of class StateDraw_Context
 218
 219
 220 /* === M E T H O D S ======================================================= */
 221
 222 StateDraw::StateDraw():
 223         Smach::state<StateDraw_Context>("draw")
 224 {
 225         insert(event_def(EVENT_STOP,&StateDraw_Context::event_stop_handler));
 226         insert(event_def(EVENT_REFRESH,&StateDraw_Context::event_refresh_handler));
 227         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateDraw_Context::event_mouse_down_handler));
 228         insert(event_def(EVENT_WORKAREA_STROKE,&StateDraw_Context::event_stroke));
 229         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateDraw_Context::event_refresh_tool_options));
 230 }
 231
 232 StateDraw::~StateDraw()
 233 {
 234 }
 235
 236
 237 void
 238 StateDraw_Context::load_settings()
 239 {
 240         String value;
 241
 242         if(settings.get_value("draw.pressure_width",value) && value=="0")
 243                 set_pressure_width_flag(false);
 244         else
 245                 set_pressure_width_flag(true);
 246
 247         if(settings.get_value("draw.auto_loop",value) && value=="0")
 248                 set_auto_loop_flag(false);
 249         else
 250                 set_auto_loop_flag(true);
 251
 252         if(settings.get_value("draw.auto_extend",value) && value=="0")
 253                 set_auto_extend_flag(false);
 254         else
 255                 set_auto_extend_flag(true);
 256
 257         if(settings.get_value("draw.auto_link",value) && value=="0")
 258                 set_auto_link_flag(false);
 259         else
 260                 set_auto_link_flag(true);
 261
 262         if(settings.get_value("draw.region_only",value) && value=="1")
 263                 set_region_only_flag(true);
 264         else
 265                 set_region_only_flag(false);
 266
 267         if(settings.get_value("draw.min_pressure_on",value) && value=="0")
 268                 set_min_pressure_flag(false);
 269         else
 270                 set_min_pressure_flag(true);
 271
 272         if(settings.get_value("draw.min_pressure",value))
 273         {
 274                 Real n = atof(value.c_str());
 275                 set_min_pressure(n);
 276         }else
 277                 set_min_pressure(0);
 278
 279         if(settings.get_value("draw.feather",value))
 280         {
 281                 Real n = atof(value.c_str());
 282                 set_feather(n);
 283         }else
 284                 set_feather(0);
 285
 286         if(settings.get_value("draw.gthreshold",value))
 287         {
 288                 Real n = atof(value.c_str());
 289                 set_gthres(n);
 290         }
 291
 292         if(settings.get_value("draw.lthreshold",value))
 293         {
 294                 Real n = atof(value.c_str());
 295                 set_lthres(n);
 296         }
 297
 298         if(settings.get_value("draw.localize",value) && value == "1")
 299                 set_local_error_flag(true);
 300         else
 301                 set_local_error_flag(false);
 302 }
 303
 304 void
 305 StateDraw_Context::save_settings()
 306 {
 307         settings.set_value("draw.pressure_width",get_pressure_width_flag()?"1":"0");
 308         settings.set_value("draw.auto_loop",get_auto_loop_flag()?"1":"0");
 309         settings.set_value("draw.auto_extend",get_auto_extend_flag()?"1":"0");
 310         settings.set_value("draw.auto_link",get_auto_link_flag()?"1":"0");
 311         settings.set_value("draw.region_only",get_region_only_flag()?"1":"0");
 312         settings.set_value("draw.min_pressure",strprintf("%f",get_min_pressure()));
 313         settings.set_value("draw.feather",strprintf("%f",get_feather()));
 314         settings.set_value("draw.min_pressure_on",get_min_pressure_flag()?"1":"0");
 315         settings.set_value("draw.gthreshold",strprintf("%f",get_gthres()));
 316         settings.set_value("draw.lthreshold",strprintf("%f",get_lthres()));
 317         settings.set_value("draw.localize",get_local_error_flag()?"1":"0");
 318 }
 319
 320 StateDraw_Context::StateDraw_Context(CanvasView* canvas_view):
 321         canvas_view_(canvas_view),
 322         is_working(*canvas_view),
 323         loop_(false),
 324         prev_workarea_layer_status_(get_work_area()->allow_layer_clicks),
 325         settings(synfigapp::Main::get_selected_input_device()->settings()),
 326         checkbutton_pressure_width(_("Pressure Width")),
 327         checkbutton_auto_loop(_("Auto Loop")),
 328         checkbutton_auto_extend(_("Auto Extend")),
 329         checkbutton_auto_link(_("Auto Link")),
 330         checkbutton_region_only(_("Create Region Only")),
 331         button_fill_last_stroke(_("Fill Last Stroke")),
 332         adj_min_pressure(0,0,1,0.01,0.1),
 333         spin_min_pressure(adj_min_pressure,0.1,3),
 334         check_min_pressure(_("Min Pressure")),
 335         adj_feather(0,0,10000,0.01,0.1),
 336         spin_feather(adj_feather,0.01,4),
 337         adj_globalthres(.70f,0.01,10000,0.01,0.1),
 338         spin_globalthres(adj_globalthres,0.01,3),
 339         adj_localthres(20,1,100000,0.1,1),
 340         check_localerror(_("LocalError"))
 341
 342 {
 343         synfig::info("STATE SKETCH: entering state");
 344
 345         nested=0;
 346         load_settings();
 347
 348         UpdateErrorBox();
 349
 350         //options_table.attach(*manage(new Gtk::Label(_("Draw Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 351         options_table.attach(checkbutton_pressure_width, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 352         options_table.attach(checkbutton_auto_loop, 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 353         options_table.attach(checkbutton_auto_extend, 0, 2, 3, 4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 354         options_table.attach(checkbutton_auto_link, 0, 2, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 355         options_table.attach(checkbutton_region_only, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 356
 357         options_table.attach(check_min_pressure, 0, 2, 6, 7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 358         options_table.attach(spin_min_pressure, 0, 2, 7, 8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 359
 360         options_table.attach(*manage(new Gtk::Label(_("Feather"))), 0, 1, 8, 9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 361         options_table.attach(spin_feather, 1, 2, 8, 9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 362
 363         options_table.attach(check_localerror, 0, 2, 9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 364         options_table.attach(*manage(new Gtk::Label(_("Smooth"))), 0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 365         options_table.attach(spin_globalthres, 1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 366
 367         //options_table.attach(button_fill_last_stroke, 0, 2, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 368
 369         button_fill_last_stroke.signal_pressed().connect(sigc::mem_fun(*this,&StateDraw_Context::fill_last_stroke));
 370         check_localerror.signal_toggled().connect(sigc::mem_fun(*this,&StateDraw_Context::UpdateErrorBox));
 371
 372         options_table.show_all();
 373         refresh_tool_options();
 374         //App::dialog_tool_options->set_widget(options_table);
 375         App::dialog_tool_options->present();
 376
 377
 378         old_duckmask=get_work_area()->get_type_mask();
 379         get_work_area()->set_type_mask(Duck::TYPE_ALL-Duck::TYPE_TANGENT-Duck::TYPE_WIDTH);
 380
 381         // Turn off layer clicking
 382         get_work_area()->allow_layer_clicks=false;
 383
 384         // Turn off duck clicking
 385         get_work_area()->allow_duck_clicks=false;
 386
 387         // clear out the ducks
 388         //get_work_area()->clear_ducks();
 389
 390         // Refresh the work area
 391         //get_work_area()->queue_draw();
 392
 393         // Hide the tables if they are showing
 394         prev_table_status=get_canvas_view()->tables_are_visible();
 395         //if(prev_table_status)get_canvas_view()->hide_tables();
 396
 397         // Disable the time bar
 398         get_canvas_view()->set_sensitive_timebar(false);
 399
 400         // Connect a signal
 401         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateDraw_Context::on_user_click));
 402
 403         get_canvas_view()->work_area->set_cursor(Gdk::PENCIL);
 404
 405         App::toolbox->refresh();
 406
 407         refresh_ducks();
 408 }
 409
 410
 411 void StateDraw_Context::UpdateErrorBox()
 412 {
 413         if(get_local_error_flag())
 414         {
 415                 spin_globalthres.set_adjustment(adj_localthres);
 416                 spin_globalthres.set_value(adj_localthres.get_value());
 417                 spin_globalthres.set_increments(0.1,1);
 418         }else
 419         {
 420                 spin_globalthres.set_adjustment(adj_globalthres);
 421                 spin_globalthres.set_value(adj_globalthres.get_value());
 422                 spin_globalthres.set_increments(0.01,.1);
 423         }
 424
 425         spin_globalthres.update();
 426 }
 427
 428 void
 429 StateDraw_Context::refresh_tool_options()
 430 {
 431         App::dialog_tool_options->clear();
 432         App::dialog_tool_options->set_widget(options_table);
 433         App::dialog_tool_options->set_local_name(_("Draw Tool"));
 434         App::dialog_tool_options->set_name("draw");
 435
 436         App::dialog_tool_options->add_button(
 437                 Gtk::StockID("synfig-fill"),
 438                 _("Fill Last Stroke")
 439         )->signal_clicked().connect(
 440                 sigc::mem_fun(
 441                         *this,
 442                         &StateDraw_Context::fill_last_stroke
 443                 )
 444         );
 445
 446 }
 447
 448 Smach::event_result
 449 StateDraw_Context::event_refresh_tool_options(const Smach::event& x)
 450 {
 451         refresh_tool_options();
 452         return Smach::RESULT_ACCEPT;
 453 }
 454
 455 StateDraw_Context::~StateDraw_Context()
 456 {
 457         save_settings();
 458
 459         App::dialog_tool_options->clear();
 460
 461         get_work_area()->set_type_mask(old_duckmask);
 462
 463         get_canvas_view()->work_area->reset_cursor();
 464
 465         // Restore layer clicking
 466         get_work_area()->allow_layer_clicks=prev_workarea_layer_status_;
 467
 468         // Restore duck clicking
 469         get_work_area()->allow_duck_clicks=true;
 470
 471         // Enable the time bar
 472         get_canvas_view()->set_sensitive_timebar(true);
 473
 474         // Bring back the tables if they were out before
 475         if(prev_table_status)get_canvas_view()->show_tables();
 476
 477         // Refresh the work area
 478         get_work_area()->queue_draw();
 479
 480         App::toolbox->refresh();
 481 }
 482
 483 Smach::event_result
 484 StateDraw_Context::event_stop_handler(const Smach::event& x)
 485 {
 486         throw Smach::egress_exception();
 487 }
 488
 489 Smach::event_result
 490 StateDraw_Context::event_refresh_handler(const Smach::event& x)
 491 {
 492         refresh_ducks();
 493         return Smach::RESULT_ACCEPT;
 494 }
 495
 496 Smach::event_result
 497 StateDraw_Context::event_mouse_down_handler(const Smach::event& x)
 498 {
 499         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 500         switch(event.button)
 501         {
 502         case BUTTON_LEFT:
 503                 {
 504                         // Enter the stroke state to get the stroke
 505                         get_canvas_view()->get_smach().push_state(&state_stroke);
 506                         return Smach::RESULT_ACCEPT;
 507                 }
 508
 509         case BUTTON_RIGHT: // Intercept the right-button click to short-circut the pop-up menu
 510                 return Smach::RESULT_ACCEPT;
 511
 512         default:
 513                 return Smach::RESULT_OK;
 514         }
 515 }
 516
 517 #define SIMILAR_TANGENT_THRESHOLD       (0.2)
 518
 519 struct debugclass
 520 {
 521         synfig::String x;
 522         debugclass(const synfig::String &x):x(x)
 523         {
 524 //              synfig::warning(">>>>>>>>>>>>>>>>>>> "+x);
 525         }
 526         ~debugclass()
 527         {
 528 //              synfig::warning("<<<<<<<<<<<<<<<<<<< "+x);
 529         }
 530 };
 531
 532 struct DepthCounter
 533 {
 534         int &i;
 535         DepthCounter(int &i):i(i) { i++; }
 536         ~DepthCounter() { i--; }
 537 };
 538
 539 Smach::event_result
 540 StateDraw_Context::event_stroke(const Smach::event& x)
 541 {
 542 //      debugclass debugger("StateDraw_Context::event_stroke(const Smach::event& x)");
 543
 544         const EventStroke& event(*reinterpret_cast<const EventStroke*>(&x));
 545
 546         assert(event.stroke_data);
 547
 548         get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
 549
 550         if(nested==0)
 551         {
 552                 DirtyTrap dirty_trap(get_work_area());
 553                 Smach::event_result result;
 554                 result=process_stroke(event.stroke_data,event.width_data,event.modifier&Gdk::CONTROL_MASK || event.modifier&Gdk::BUTTON2_MASK);
 555                 process_queue();
 556                 return result;
 557         }
 558
 559         stroke_queue.push_back(pair<StrokeData,WidthData>(event.stroke_data,event.width_data));
 560
 561         return Smach::RESULT_ACCEPT;
 562 }
 563
 564 bool
 565 StateDraw_Context::process_queue()
 566 {
 567 //      debugclass debugger("StateDraw_Context::process_queue()");
 568         if(nested)
 569                 return true;
 570         DepthCounter depth_counter(nested);
 571         while(!stroke_queue.empty())
 572         {
 573                 pair<StrokeData,WidthData> front(stroke_queue.front());
 574                 process_stroke(front.first,front.second);
 575                 stroke_queue.pop_front();
 576         }
 577         return false;
 578 }
 579
 580 Smach::event_result
 581 StateDraw_Context::process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag)
 582 {
 583 //      debugclass debugger("StateDraw_Context::process_stroke");
 584         DepthCounter depth_counter(nested);
 585
 586         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);
 587
 588
 589         // If we aren't using pressure width,
 590         // then set all the width to 1
 591         if(!get_pressure_width_flag())
 592         {
 593                 std::list<synfig::Real>::iterator iter;
 594                 for(iter=width_data->begin();iter!=width_data->end();++iter)
 595                 {
 596                         *iter=1.0;
 597                 }
 598         }
 599
 600         //get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
 601         //stroke_list.push_back(event.stroke_data);
 602         //refresh_ducks();
 603
 604         std::list<synfig::BLinePoint> bline;
 605         bool loop_bline_flag(false);
 606
 607         //Changed by Adrian - use resident class :)
 608         //synfigapp::convert_stroke_to_bline(bline, *event.stroke_data,*event.width_data, synfigapp::Main::get_bline_width());
 609         blineconv.width = synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc());
 610
 611         if(get_local_error_flag())
 612         {
 613                 float pw = get_work_area()->get_pw();
 614                 float ph = get_work_area()->get_ph();
 615
 616                 blineconv.pixelwidth = sqrt(pw*pw+ph*ph);
 617                 blineconv.smoothness = get_lthres();
 618         }else
 619         {
 620                 blineconv.pixelwidth = 1;
 621                 blineconv.smoothness = get_gthres();
 622         }
 623
 624         blineconv(bline,*stroke_data,*width_data);
 625
 626         //Postprocess to require minimum pressure
 627         if(get_min_pressure_flag())
 628         {
 629                 synfigapp::BLineConverter::EnforceMinWidth(bline,get_min_pressure());
 630         }
 631
 632         // If the start and end points are similar, then make them the same point
 633         if(get_auto_loop_flag() &&
 634            bline.size()>2&&(bline.front().get_vertex()-bline.back().get_vertex()).mag()<=radius)
 635         {
 636                 loop_bline_flag=true;
 637                 Vector tangent;
 638                 Real width(0);
 639
 640                 while(bline.size()>2&&(bline.front().get_vertex()-bline.back().get_vertex()).mag()<=radius)
 641                 {
 642                         tangent=bline.back().get_tangent1();
 643                         width=bline.back().get_width();
 644                         bline.pop_back();
 645                 }
 646
 647                 if(abs(bline.front().get_tangent1().norm()*tangent.norm().perp())>SIMILAR_TANGENT_THRESHOLD)
 648                 {
 649                         // If the tangents are not similar, then
 650                         // split the tangents
 651                         bline.front().set_split_tangent_flag(true);
 652                         bline.front().set_tangent1(tangent);
 653                 }
 654                 else
 655                 {
 656                         // If the tangents are similar, then set the tangent
 657                         // to the average of the two
 658                         bline.front().set_tangent((tangent+bline.front().get_tangent1())*0.5f);
 659                 }
 660
 661                 // Add the widths of the two points
 662                 {
 663                         Real width(bline.front().get_width()+width);
 664                         width=width<=1?width:1;
 665                         bline.front().set_width(width);
 666                 }
 667         }
 668
 669         // If the bline only has once blinepoint, then there is nothing to do.
 670         if(bline.size()<=1)
 671                 return Smach::RESULT_OK;
 672
 673         if(region_flag)
 674                 return new_region(bline,radius);
 675
 676         return new_bline(bline,loop_bline_flag,radius);
 677 }
 678
 679 Smach::event_result
 680 StateDraw_Context::new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius)
 681 {
 682         // Create the action group
 683         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Sketch BLine"));
 684
 685         bool shift_offset = false;
 686         Vector shift_offset_vector;
 687         bool join_start_no_extend=false,join_finish_no_extend=false;
 688         synfigapp::ValueDesc start_duck_value_desc,finish_duck_value_desc;
 689         bool extend_start=false,extend_finish=false,complete_loop=false;
 690         bool extend_start_join_same=false,extend_start_join_different=false;
 691         bool extend_finish_join_same=false,extend_finish_join_different=false;
 692         int start_duck_index,finish_duck_index;
 693         ValueNode_BLine::Handle start_duck_value_node_bline=NULL,finish_duck_value_node_bline=NULL;
 694
 695         // Find any ducks at the start or end that we might attach to
 696         // (this used to only run if we aren't a loop - ie. !loop_bline_flag
 697         // but having loops auto-connect can be useful as well)
 698         if(get_auto_extend_flag() || get_auto_link_flag())
 699         {
 700                 etl::handle<Duck> start_duck(get_work_area()->find_duck(bline.front().get_vertex(),radius,Duck::TYPE_VERTEX));
 701                 etl::handle<Duck> finish_duck(get_work_area()->find_duck(bline.back().get_vertex(),radius,Duck::TYPE_VERTEX));
 702
 703                 // check whether the start of the new line extends an
 704                 // existing line.  this is only the case if the new
 705                 // line isn't a self-contained loop, and if the new
 706                 // line starts at one of the ends of an existing line
 707                 if(start_duck)do
 708                 {
 709                         if(!(start_duck_value_desc=start_duck->get_value_desc()))break;
 710                         if(loop_bline_flag)break;
 711                         if(!start_duck_value_desc.parent_is_value_node())break;
 712                         start_duck_index=start_duck_value_desc.get_index();
 713                         start_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(start_duck_value_desc.get_parent_value_node());
 714                         if(!get_auto_extend_flag())break;
 715
 716                         // don't extend looped blines
 717                         if(start_duck_value_node_bline&&!start_duck_value_node_bline->get_loop()&&
 718                            (start_duck_index==0||start_duck_index==start_duck_value_node_bline->link_count()-1))
 719                         {
 720                                 extend_start=true;
 721                                 shift_offset=true;
 722                                 shift_offset_vector=start_duck->get_origin();
 723                         }
 724                 }while(0);
 725
 726                 // check whether the end of the new line extends an
 727                 // existing line.  this is only the case if the new
 728                 // line isn't a self-contained loop, and if the new
 729                 // line ends at one of the ends of an existing line
 730                 if(finish_duck)do
 731                 {
 732                         if(!(finish_duck_value_desc=finish_duck->get_value_desc()))break;
 733                         if(loop_bline_flag)break;
 734                         if(!finish_duck_value_desc.parent_is_value_node())break;
 735                         finish_duck_index=finish_duck_value_desc.get_index();
 736                         finish_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(finish_duck_value_desc.get_parent_value_node());
 737                         if(!get_auto_extend_flag())break;
 738
 739                         // don't extend looped blines
 740                         if(finish_duck_value_node_bline&&!finish_duck_value_node_bline->get_loop()&&
 741                            (finish_duck_index==0||finish_duck_index==finish_duck_value_node_bline->link_count()-1))
 742                                 if(extend_start)
 743                                 {
 744                                         // we've started and finished drawing at the end of a bline.  we can't
 745                                         // extend both blines, so unless we started and finished at the 2 ends
 746                                         // of the same bline, only extend the one we started on
 747                                         if(start_duck_value_node_bline==finish_duck_value_node_bline)
 748                                                 complete_loop=extend_finish=true;
 749                                 }else{
 750                                         extend_finish=true;
 751                                         shift_offset=true;
 752                                         shift_offset_vector=finish_duck->get_origin();
 753                                 }
 754                 }while(0);
 755
 756                 // if the new line's start didn't extend an existing line,
 757                 // check whether it needs to be linked to an existing duck
 758                 if(!extend_start&&get_auto_link_flag()&&start_duck&&start_duck_value_desc)
 759                         switch(start_duck_value_desc.get_value_type())
 760                         {
 761                         case synfig::ValueBase::TYPE_BLINEPOINT:
 762                                 start_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_desc.get_value_node()),0);
 763                                 // fall through
 764                         case synfig::ValueBase::TYPE_VECTOR:
 765                                 if (shift_offset && shift_offset_vector != start_duck->get_origin())
 766                                         break;
 767                                 shift_offset = true;
 768                                 shift_offset_vector = start_duck->get_origin();
 769                                 get_canvas_interface()->auto_export(start_duck_value_desc);
 770                                 if (extend_finish)
 771                                         if(start_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 772                                                 extend_finish_join_same=true;
 773                                         else
 774                                                 extend_finish_join_different=true;
 775                                 else
 776                                         join_start_no_extend=true;
 777                                 // fall through
 778                         default:break;
 779                         }
 780
 781                 // if the new line's end didn't extend an existing line,
 782                 // check whether it needs to be linked to an existing duck
 783                 if(!extend_finish&&get_auto_link_flag()&&finish_duck&&finish_duck_value_desc)
 784                         switch(finish_duck_value_desc.get_value_type())
 785                         {
 786                         case synfig::ValueBase::TYPE_BLINEPOINT:
 787                                 finish_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_desc.get_value_node()),0);
 788                                 // fall through
 789                         case synfig::ValueBase::TYPE_VECTOR:
 790                                 if (shift_offset && shift_offset_vector != finish_duck->get_origin())
 791                                         break;
 792                                 shift_offset = true;
 793                                 shift_offset_vector = finish_duck->get_origin();
 794                                 get_canvas_interface()->auto_export(finish_duck_value_desc);
 795                                 if(extend_start)
 796                                         if(finish_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 797                                                 extend_start_join_same=true;
 798                                         else
 799                                                 extend_start_join_different=true;
 800                                 else
 801                                         join_finish_no_extend=true;
 802                                 // fall through
 803                         default:break;
 804                         }
 805         }
 806
 807         ValueNode_BLine::Handle value_node;
 808         std::list<synfig::BLinePoint> trans_bline;
 809
 810         {
 811                 std::list<synfig::BLinePoint>::iterator iter;
 812                 const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 813
 814                 for(iter=bline.begin();iter!=bline.end();++iter)
 815                 {
 816                         BLinePoint bline_point(*iter);
 817                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 818
 819                         bline_point.set_tangent1(
 820                                 transform.unperform(
 821                                         bline_point.get_tangent1()+bline_point.get_vertex()
 822                                 ) -new_vertex
 823                         );
 824
 825                         bline_point.set_tangent2(
 826                                 transform.unperform(
 827                                         bline_point.get_tangent2()+bline_point.get_vertex()
 828                                 ) -new_vertex
 829                         );
 830
 831                         if (shift_offset)
 832                                 new_vertex=new_vertex-shift_offset_vector;
 833
 834                         bline_point.set_vertex(new_vertex);
 835
 836                         trans_bline.push_back(bline_point);
 837                 }
 838                 value_node=ValueNode_BLine::create(synfig::ValueBase(trans_bline,loop_bline_flag));
 839         }
 840
 841         Smach::event_result result;
 842         synfig::ValueNode_DynamicList::ListEntry source;
 843         int target_index;
 844
 845         // the new line's start extends an existing line
 846         if(extend_start)
 847         {
 848                 if(complete_loop)trans_bline.pop_back();
 849                 trans_bline.pop_front();
 850                 if(start_duck_index==0)
 851                 {       // We need to reverse the BLine first.
 852                         reverse_bline(trans_bline);
 853                         result=extend_bline_from_begin(start_duck_value_node_bline,trans_bline,complete_loop);
 854                         source=start_duck_value_node_bline->list.front();
 855                         target_index=trans_bline.size()+finish_duck_index;
 856                 }
 857                 else
 858                 {
 859                         result=extend_bline_from_end(start_duck_value_node_bline,trans_bline,complete_loop);
 860                         source=start_duck_value_node_bline->list.back();
 861                         target_index=finish_duck_index;
 862                 }
 863
 864                 if(extend_start_join_different)
 865                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 866                                 set_link(0,finish_duck_value_desc.get_value_node());
 867                 else if(extend_start_join_same)
 868                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 869                                 set_link(0,synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_node_bline->
 870                                                                                                         list[target_index].value_node),0).get_value_node());
 871                 return result;
 872         }
 873
 874         // the new line's end extends an existing line
 875         if(extend_finish)
 876         {       // SPECIAL CASE -- EXTENSION
 877                 trans_bline.pop_back();
 878                 if(finish_duck_index==0)
 879                 {
 880                         result=extend_bline_from_begin(finish_duck_value_node_bline,trans_bline,false);
 881                         source=finish_duck_value_node_bline->list.front();
 882                         target_index=trans_bline.size()+start_duck_index;
 883                 }
 884                 else
 885                 {       // We need to reverse the BLine first.
 886                         reverse_bline(trans_bline);
 887                         result=extend_bline_from_end(finish_duck_value_node_bline,trans_bline,false);
 888                         source=finish_duck_value_node_bline->list.back();
 889                         target_index=start_duck_index;
 890                 }
 891
 892                 if(extend_finish_join_different)
 893                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 894                                 set_link(0,start_duck_value_desc.get_value_node());
 895                 else if(extend_finish_join_same)
 896                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 897                                 set_link(0,synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_node_bline->
 898                                                                                                         list[target_index].value_node),0).get_value_node());
 899                 return result;
 900         }
 901
 902         if (join_start_no_extend)
 903                 LinkableValueNode::Handle::cast_dynamic(value_node->list.front().value_node)->
 904                   set_link(0,start_duck_value_desc.get_value_node());
 905
 906         if (join_finish_no_extend)
 907                 LinkableValueNode::Handle::cast_dynamic(value_node->list.back().value_node)->
 908                   set_link(0,finish_duck_value_desc.get_value_node());
 909
 910         // Create the layer
 911         {
 912                 Layer::Handle layer;
 913                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
 914                 int depth(0);
 915
 916                 // we are temporarily using the layer to hold something
 917                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 918                 if(layer)
 919                 {
 920                         depth=layer->get_depth();
 921                         canvas=layer->get_canvas();
 922                 }
 923
 924                 //int number(synfig::UniqueID().get_uid());
 925
 926                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 927
 928                 if(get_region_only_flag())
 929                         layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
 930                 else
 931                         layer=get_canvas_interface()->add_layer_to("outline",canvas,depth);
 932
 933                 if(get_feather())
 934                 {
 935                         layer->set_param("feather",get_feather());
 936                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 937                 }
 938                 assert(layer);
 939                 //layer->set_description(strprintf("Stroke %d",number));
 940                 //get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 941
 942                 if (shift_offset)
 943                         get_canvas_interface()->
 944                           change_value(synfigapp::ValueDesc(layer,"offset"),shift_offset_vector);
 945
 946                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 947
 948                 assert(action);
 949
 950                 action->set_param("canvas",get_canvas());
 951                 action->set_param("canvas_interface",get_canvas_interface());
 952                 action->set_param("layer",layer);
 953                 if(!action->set_param("param",String("bline")))
 954                         synfig::error("LayerParamConnect didn't like \"param\"");
 955                 if(!action->set_param("value_node",ValueNode::Handle(value_node)))
 956                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 957
 958                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 959                 {
 960                         get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
 961                         group.cancel();
 962                         //refresh_ducks();
 963                         return Smach::RESULT_ERROR;
 964                 }
 965                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
 966                 //refresh_ducks();
 967         }
 968
 969         last_stroke=value_node;
 970         return Smach::RESULT_ACCEPT;
 971 }
 972
 973 Smach::event_result
 974 StateDraw_Context::new_region(std::list<synfig::BLinePoint> bline, synfig::Real radius)
 975 {
 976         // Create the action group
 977         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Define Region"));
 978
 979         std::list<synfigapp::ValueDesc> vertex_list;
 980
 981         // First we need to come up with a rough list of
 982         // BLinePoints that we are going to be using to
 983         // define our region.
 984         {
 985                 std::list<synfig::BLinePoint>::iterator iter;
 986                 for(iter=bline.begin();iter!=bline.end();++iter)
 987                 {
 988                         etl::handle<Duck> duck(get_work_area()->find_duck(iter->get_vertex(),0,Duck::TYPE_VERTEX));
 989
 990                         if(!duck)
 991                         {
 992                                 synfig::info(__FILE__":%d: Nothing to enclose!",__LINE__);
 993                                 return Smach::RESULT_OK;
 994                         }
 995
 996
 997                         assert(duck->get_type()==Duck::TYPE_VERTEX);
 998
 999                         synfigapp::ValueDesc value_desc(duck->get_value_desc());
1000
1001                         if(!value_desc)
1002                         {
1003                                 synfig::info(__FILE__":%d: Got a hit, but no ValueDesc on this duck",__LINE__);
1004                                 continue;
1005                         }
1006
1007                         switch(value_desc.get_value_type())
1008                         {
1009                         case synfig::ValueBase::TYPE_BLINEPOINT:
1010                                 //if(vertex_list.empty() || value_desc!=vertex_list.back())
1011                                 vertex_list.push_back(value_desc);
1012                                 assert(vertex_list.back().is_valid());
1013
1014                                 break;
1015                         default:
1016                                 break;
1017                         }
1018                 }
1019         }
1020
1021         if(vertex_list.size()<=2)
1022         {
1023                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1024                 return Smach::RESULT_OK;
1025         }
1026
1027         assert(vertex_list.back().is_valid());
1028
1029         // Remove any duplicates
1030         {
1031         }
1032
1033         // Now we need to clean the list of vertices up
1034         // a bit. This includes inserting missing vertices
1035         // and removing extraneous ones.
1036         // We can do this in multiple passes.
1037         int i=0;
1038         for(bool done=false;!done && i<30;i++)
1039         {
1040                 // Set done to "true" for now. If
1041                 // any updates are performed, we will
1042                 // change it back to false.
1043                 done=true;
1044
1045                 std::list<synfigapp::ValueDesc>::iterator prev,iter,next;
1046                 prev=vertex_list.end();prev--;  // Set prev to the last ValueDesc
1047                 next=vertex_list.begin();
1048                 iter=next++; // Set iter to the first value desc, and next to the second
1049
1050                 for(;iter!=vertex_list.end();prev=iter,iter=next++)
1051                 {
1052                         synfigapp::ValueDesc value_prev(*prev);
1053                         synfigapp::ValueDesc value_desc(*iter);
1054                         synfigapp::ValueDesc value_next((next==vertex_list.end())?vertex_list.front():*next);
1055
1056                         assert(value_desc.is_valid());
1057                         assert(value_next.is_valid());
1058                         assert(value_prev.is_valid());
1059
1060                         //synfig::info("-------");
1061                         //synfig::info(__FILE__":%d: value_prev 0x%08X:%d",__LINE__,value_prev.get_parent_value_node().get(),value_prev.get_index());
1062                         //synfig::info(__FILE__":%d: value_desc 0x%08X:%d",__LINE__,value_desc.get_parent_value_node().get(),value_desc.get_index());
1063                         //synfig::info(__FILE__":%d: value_next 0x%08X:%d",__LINE__,value_next.get_parent_value_node().get(),value_next.get_index());
1064
1065                         /*
1066                         if(value_prev.parent_is_value_node() && value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1067                         {
1068                                 // Remove random extraneous vertices
1069                                 if(value_prev.get_parent_value_node()==value_next.get_parent_value_node() &&
1070                                         value_prev.get_parent_value_node()!=value_desc.get_parent_value_node())
1071                                 {
1072                                         DEBUGPOINT();
1073                                         vertex_list.erase(iter);
1074                                         done=false;
1075                                         break;
1076                                 }
1077                         }
1078                         */
1079
1080                         // Remove duplicate vertices
1081                         if(value_prev.get_value_node()==value_desc.get_value_node()
1082                                 || value_desc.get_value_node()==value_next.get_value_node())
1083                         {
1084                                 DEBUGPOINT();
1085                                 vertex_list.erase(iter);
1086                                 done=false;
1087                                 break;
1088                         }
1089                         if(value_prev.get_value_node()==value_next.get_value_node())
1090                         {
1091                                 DEBUGPOINT();
1092                                 vertex_list.erase(prev);
1093                                 done=false;
1094                                 break;
1095                         }
1096
1097                         if(value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1098                         if(value_desc.get_parent_value_node()==value_next.get_parent_value_node() && (next!=vertex_list.end()))
1099                         {
1100                                 // Fill in missing vertices
1101                                 if(value_desc.get_index()<value_next.get_index()-1)
1102                                 {
1103                                         DEBUGPOINT();
1104                                         vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()+1));
1105                                         done=false;
1106                                         break;
1107                                 }
1108                                 if(value_next.get_index()<value_desc.get_index()-1)
1109                                 {
1110                                         DEBUGPOINT();
1111                                         vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_next.get_index()+1));
1112                                         done=false;
1113                                         break;
1114                                 }
1115                         }
1116
1117                         // Ensure that connections
1118                         // between blines are properly
1119                         // connected
1120                         if(value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1121                         if(value_desc.get_parent_value_node()!=value_next.get_parent_value_node() &&
1122                                 value_desc.get_value_node()!=value_next.get_value_node())
1123                         {
1124                                 BLinePoint vertex(value_desc.get_value(get_time()).get(BLinePoint()));
1125                                 BLinePoint vertex_next(value_next.get_value(get_time()).get(BLinePoint()));
1126
1127                                 //synfig::info("--------");
1128                                 //synfig::info(__FILE__":%d: vertex: [%f, %f]",__LINE__,vertex.get_vertex()[0],vertex.get_vertex()[1]);
1129                                 //synfig::info(__FILE__":%d: vertex_next: [%f, %f]",__LINE__,vertex_next.get_vertex()[0],vertex_next.get_vertex()[1]);
1130
1131                                 if((vertex.get_vertex()-vertex_next.get_vertex()).mag_squared()<radius*radius)
1132                                 {
1133                                         DEBUGPOINT();
1134                                         ValueNode_Composite::Handle value_node;
1135                                         ValueNode_Composite::Handle value_node_next;
1136                                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node().clone());
1137                                         value_node_next=ValueNode_Composite::Handle::cast_dynamic(value_next.get_value_node().clone());
1138                                         if(!value_node || !value_node_next)
1139                                         {
1140                                                 synfig::info(__FILE__":%d: Unable to properly connect blines.",__LINE__);
1141                                                 continue;
1142                                         }
1143                                         DEBUGPOINT();
1144                                         value_node->set_link(5,value_node_next->get_link(5));
1145                                         value_node->set_link(3,ValueNode_Const::create(true));
1146
1147                                         get_canvas_interface()->auto_export(value_node);
1148                                         assert(value_node->is_exported());
1149                                         *iter=synfigapp::ValueDesc(get_canvas(),value_node->get_id());
1150                                         vertex_list.erase(next);
1151                                         done=false;
1152                                         break;
1153                                 }
1154                                 else
1155                                 {
1156                                         DEBUGPOINT();
1157                                         bool positive_trend(value_desc.get_index()>value_prev.get_index());
1158
1159                                         if(!positive_trend && value_desc.get_index()>0)
1160                                         {
1161                                                 DEBUGPOINT();
1162                                                 vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()-1));
1163                                                 done=false;
1164                                                 break;
1165                                         }
1166                                         if(positive_trend && value_desc.get_index()<LinkableValueNode::Handle::cast_static(value_desc.get_value_node())->link_count()-1)
1167                                         {
1168                                                 DEBUGPOINT();
1169                                                 vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()+1));
1170                                                 done=false;
1171                                                 break;
1172                                         }
1173                                 }
1174
1175                         }
1176                 }
1177         }
1178
1179         if(vertex_list.size()<=2)
1180         {
1181                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1182                 return Smach::RESULT_OK;
1183         }
1184
1185         ValueNode_BLine::Handle value_node_bline;
1186
1187         // Now we need to test for the trivial case,
1188         // which is where all of the vertices
1189         // come from one BLine.
1190         if(vertex_list.front().parent_is_linkable_value_node())
1191         {
1192                 bool trivial_case(true);
1193                 ValueNode::Handle trivial_case_value_node;
1194
1195                 trivial_case_value_node=vertex_list.front().get_parent_value_node();
1196
1197                 std::list<synfigapp::ValueDesc>::iterator iter;
1198                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1199                 {
1200                         if(trivial_case_value_node!=iter->get_parent_value_node())
1201                         {
1202                                 trivial_case=false;
1203                                 break;
1204                         }
1205                 }
1206                 if(trivial_case)
1207                         value_node_bline=ValueNode_BLine::Handle::cast_dynamic(trivial_case_value_node);
1208         }
1209
1210         // If we aren't the trivial case,
1211         // then go ahead and create the new
1212         // BLine value node
1213         if(!value_node_bline)
1214         {
1215                 value_node_bline=ValueNode_BLine::create();
1216
1217                 std::list<synfigapp::ValueDesc>::iterator iter;
1218                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1219                 {
1220                         // Ensure that the vertex is exported.
1221                         get_canvas_interface()->auto_export(*iter);
1222
1223                         value_node_bline->add(iter->get_value_node());
1224                         //value_node_bline->add(ValueNode_BLine::ListEntry(iter->get_value_node()));
1225                 }
1226
1227                 value_node_bline->set_loop(true);
1228         }
1229
1230         get_canvas_interface()->auto_export(value_node_bline);
1231
1232         // Now we create the region layer
1233         // Create the layer
1234         {
1235                 Layer::Handle layer;
1236                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
1237                 int depth(0);
1238
1239                 // we are temporarily using the layer to hold something
1240                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1241                 if(layer)
1242                 {
1243                         depth=layer->get_depth();
1244                         canvas=layer->get_canvas();
1245                 }
1246
1247                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1248
1249                 layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
1250                 assert(layer);
1251                 layer->set_param("color",synfigapp::Main::get_background_color());
1252                 if(get_feather())
1253                 {
1254                         layer->set_param("feather",get_feather());
1255                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
1256                 }
1257                 get_canvas_interface()->signal_layer_param_changed()(layer,"color");
1258
1259                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1260
1261                 assert(action);
1262
1263                 action->set_param("canvas",get_canvas());
1264                 action->set_param("canvas_interface",get_canvas_interface());
1265                 action->set_param("layer",layer);
1266                 if(!action->set_param("param",String("bline")))
1267                         synfig::error("LayerParamConnect didn't like \"param\"");
1268                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
1269                         synfig::error("LayerParamConnect didn't like \"value_node\"");
1270
1271                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1272                 {
1273                         get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1274                         group.cancel();
1275                         return Smach::RESULT_ERROR;
1276                 }
1277                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1278         }
1279
1280         return Smach::RESULT_ACCEPT;
1281 }
1282
1283 void
1284 StateDraw_Context::refresh_ducks()
1285 {
1286         get_canvas_view()->queue_rebuild_ducks();
1287 /*
1288         get_work_area()->clear_ducks();
1289
1290
1291         std::list< etl::smart_ptr<std::list<synfig::Point> > >::iterator iter;
1292
1293         for(iter=stroke_list.begin();iter!=stroke_list.end();++iter)
1294         {
1295                 get_work_area()->add_stroke(*iter);
1296         }
1297
1298         get_work_area()->queue_draw();
1299 */
1300 }
1301
1302
1303 Smach::event_result
1304 StateDraw_Context::extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1305 {
1306         // Create the action group
1307         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1308
1309         if (complete_loop)
1310         {
1311                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_loop"));
1312                 assert(action);
1313
1314                 action->set_param("canvas",get_canvas());
1315                 action->set_param("canvas_interface",get_canvas_interface());
1316                 action->set_param("value_node",ValueNode::Handle(value_node));
1317
1318                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1319                 {
1320                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1321                         group.cancel();
1322                         return Smach::RESULT_ERROR;
1323                 }
1324         }
1325
1326         std::list<synfig::BLinePoint>::reverse_iterator iter;
1327         for(iter=bline.rbegin();!(iter==bline.rend());++iter)
1328         {
1329                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1330
1331                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1332
1333                 assert(action);
1334                 synfigapp::ValueDesc value_desc(value_node,0);
1335
1336                 action->set_param("canvas",get_canvas());
1337                 action->set_param("canvas_interface",get_canvas_interface());
1338                 action->set_param("value_desc",value_desc);
1339                 if(!action->set_param("item",ValueNode::Handle(composite)))
1340                         synfig::error("ACTION didn't like \"item\"");
1341
1342                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1343                 {
1344                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1345                         group.cancel();
1346                         //refresh_ducks();
1347                         return Smach::RESULT_ERROR;
1348                 }
1349         }
1350         last_stroke=value_node;
1351         return Smach::RESULT_ACCEPT;
1352 }
1353
1354 Smach::event_result
1355 StateDraw_Context::extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1356 {
1357         // Create the action group
1358         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1359
1360         if (complete_loop)
1361         {
1362                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_loop"));
1363                 assert(action);
1364
1365                 action->set_param("canvas",get_canvas());
1366                 action->set_param("canvas_interface",get_canvas_interface());
1367                 action->set_param("value_node",ValueNode::Handle(value_node));
1368
1369                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1370                 {
1371                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1372                         group.cancel();
1373                         return Smach::RESULT_ERROR;
1374                 }
1375         }
1376
1377         std::list<synfig::BLinePoint>::iterator iter;
1378         for(iter=bline.begin();iter!=bline.end();++iter)
1379         {
1380                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1381
1382                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1383
1384                 assert(action);
1385                 synfigapp::ValueDesc value_desc(value_node,value_node->link_count());
1386
1387                 action->set_param("canvas",get_canvas());
1388                 action->set_param("canvas_interface",get_canvas_interface());
1389                 action->set_param("value_desc",value_desc);
1390                 if(!action->set_param("item",ValueNode::Handle(composite)))
1391                         synfig::error("ACTION didn't like \"item\"");
1392
1393                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1394                 {
1395                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1396                         group.cancel();
1397                         //refresh_ducks();
1398                         return Smach::RESULT_ERROR;
1399                 }
1400         }
1401         last_stroke=value_node;
1402         return Smach::RESULT_ACCEPT;
1403 }
1404
1405 void
1406 StateDraw_Context::reverse_bline(std::list<synfig::BLinePoint> &bline)
1407 {
1408         int i;
1409
1410         std::list<synfig::BLinePoint>::iterator iter,eiter;
1411         iter=bline.begin();
1412         eiter=bline.end();
1413         eiter--;
1414         for(i=0;i<(int)bline.size()/2;++iter,--eiter,i++)
1415         {
1416                 iter_swap(iter,eiter);
1417                 iter->reverse();
1418                 eiter->reverse();
1419         }
1420 }
1421
1422 void
1423 StateDraw_Context::fill_last_stroke()
1424 {
1425         if(!last_stroke)
1426                 return;
1427
1428         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Fill Stroke"));
1429
1430         Layer::Handle layer;
1431
1432         get_canvas_interface()->auto_export(last_stroke);
1433
1434         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1435
1436         layer=get_canvas_interface()->add_layer("region");
1437         assert(layer);
1438         layer->set_param("color",synfigapp::Main::get_background_color());
1439
1440         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1441
1442         assert(action);
1443
1444         action->set_param("canvas",get_canvas());
1445         action->set_param("canvas_interface",get_canvas_interface());
1446         action->set_param("layer",layer);
1447         if(!action->set_param("param",String("segment_list")))
1448                 synfig::error("LayerParamConnect didn't like \"param\"");
1449         if(!action->set_param("value_node",ValueNode::Handle(last_stroke)))
1450                 synfig::error("LayerParamConnect didn't like \"value_node\"");
1451
1452         if(!get_canvas_interface()->get_instance()->perform_action(action))
1453         {
1454                 get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1455                 group.cancel();
1456                 return;
1457         }
1458         get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1459 }