synfig-studio/tags/stable/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 **      Copyright (c) 2007 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include <gtkmm/dialog.h>
  34 #include <gtkmm/entry.h>
  35
  36 #include <synfig/valuenode_dynamiclist.h>
  37
  38 #include "state_draw.h"
  39 #include "state_stroke.h"
  40 #include "canvasview.h"
  41 #include "workarea.h"
  42 #include "app.h"
  43 #include <synfig/valuenode_bline.h>
  44 #include <synfig/valuenode_composite.h>
  45 #include <ETL/hermite>
  46 #include <ETL/calculus>
  47 #include <utility>
  48 #include "event_mouse.h"
  49 #include "event_layerclick.h"
  50 #include "toolbox.h"
  51
  52 #include <synfigapp/blineconvert.h>
  53 #include <synfigapp/main.h>
  54
  55 #include <ETL/gaussian>
  56 #include "dialog_tooloptions.h"
  57
  58 #include <gtkmm/table.h>
  59 #include <gtkmm/label.h>
  60 #include <gtkmm/button.h>
  61 #include <gtkmm/checkbutton.h>
  62 #include <gtkmm/scale.h>
  63 #include <sigc++/connection.h>
  64
  65 #include "general.h"
  66
  67 #endif
  68
  69 /* === U S I N G =========================================================== */
  70
  71 using namespace std;
  72 using namespace etl;
  73 using namespace synfig;
  74 using namespace studio;
  75
  76 /* === M A C R O S ========================================================= */
  77
  78 /* === G L O B A L S ======================================================= */
  79
  80 StateDraw studio::state_draw;
  81
  82 /* === C L A S S E S & S T R U C T S ======================================= */
  83
  84 class studio::StateDraw_Context : public sigc::trackable
  85 {
  86         typedef etl::smart_ptr<std::list<synfig::Point> > StrokeData;
  87         typedef etl::smart_ptr<std::list<synfig::Real> > WidthData;
  88
  89         typedef list< pair<StrokeData,WidthData> > StrokeQueue;
  90
  91         StrokeQueue stroke_queue;
  92
  93
  94         etl::handle<CanvasView> canvas_view_;
  95         CanvasView::IsWorking is_working;
  96
  97         bool prev_table_status;
  98         bool loop_;
  99         bool prev_workarea_layer_status_;
 100
 101         int nested;
 102         sigc::connection process_queue_connection;
 103
 104         ValueNode_BLine::Handle last_stroke;
 105         synfig::String last_stroke_id;
 106
 107         Gtk::Menu menu;
 108
 109         //Duckmatic::Push duckmatic_push;
 110
 111         std::list< etl::smart_ptr<std::list<synfig::Point> > > stroke_list;
 112
 113         void refresh_ducks();
 114
 115         Duckmatic::Type old_duckmask;
 116
 117         void fill_last_stroke();
 118         void fill_last_stroke_and_unselect_other_layers();
 119
 120         Smach::event_result new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius);
 121
 122         Smach::event_result new_region(std::list<synfig::BLinePoint> bline,synfig::Real radius);
 123
 124         Smach::event_result extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop);
 125         Smach::event_result extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop);
 126         void reverse_bline(std::list<synfig::BLinePoint> &bline);
 127
 128         synfigapp::Settings& settings;
 129
 130         Gtk::Table options_table;
 131         Gtk::Entry entry_id;
 132         Gtk::CheckButton checkbutton_pressure_width;
 133         Gtk::CheckButton checkbutton_round_ends;
 134         Gtk::CheckButton checkbutton_auto_loop;   // whether to loop new strokes which start and end in the same place
 135         Gtk::CheckButton checkbutton_auto_extend; // whether to extend existing lines
 136         Gtk::CheckButton checkbutton_auto_link;   // whether to link new ducks to existing ducks
 137         Gtk::CheckButton checkbutton_region;      // whether to create regions
 138         Gtk::CheckButton checkbutton_outline;     // whether to create outlines
 139         Gtk::CheckButton checkbutton_auto_export;
 140         Gtk::Button button_fill_last_stroke;
 141
 142         //pressure spinner and such
 143         Gtk::Adjustment  adj_min_pressure;
 144         Gtk::SpinButton  spin_min_pressure;
 145         Gtk::CheckButton check_min_pressure;
 146
 147         Gtk::Adjustment  adj_feather;
 148         Gtk::SpinButton  spin_feather;
 149
 150         Gtk::Adjustment  adj_globalthres;
 151         Gtk::SpinButton  spin_globalthres;
 152
 153         Gtk::Adjustment  adj_localthres;
 154         Gtk::CheckButton check_localerror;
 155         void UpdateErrorBox();  //switches the stuff if need be :)
 156
 157         //Added by Adrian - data drive HOOOOO
 158         synfigapp::BLineConverter blineconv;
 159
 160 public:
 161         synfig::String get_id()const { return entry_id.get_text(); }
 162         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 163
 164         bool get_pressure_width_flag()const { return checkbutton_pressure_width.get_active(); }
 165         void set_pressure_width_flag(bool x) { return checkbutton_pressure_width.set_active(x); }
 166
 167         bool get_auto_loop_flag()const { return checkbutton_auto_loop.get_active(); }
 168         void set_auto_loop_flag(bool x) { return checkbutton_auto_loop.set_active(x); }
 169
 170         bool get_auto_extend_flag()const { return checkbutton_auto_extend.get_active(); }
 171         void set_auto_extend_flag(bool x) { return checkbutton_auto_extend.set_active(x); }
 172
 173         bool get_auto_link_flag()const { return checkbutton_auto_link.get_active(); }
 174         void set_auto_link_flag(bool x) { return checkbutton_auto_link.set_active(x); }
 175
 176         bool get_region_flag()const { return checkbutton_region.get_active(); }
 177         void set_region_flag(bool x) { return checkbutton_region.set_active(x); }
 178
 179         bool get_outline_flag()const { return checkbutton_outline.get_active(); }
 180         void set_outline_flag(bool x) { return checkbutton_outline.set_active(x); }
 181
 182         bool get_auto_export_flag()const { return checkbutton_auto_export.get_active(); }
 183         void set_auto_export_flag(bool x) { return checkbutton_auto_export.set_active(x); }
 184
 185         Real get_min_pressure() const { return adj_min_pressure.get_value(); }
 186         void set_min_pressure(Real x) { return adj_min_pressure.set_value(x); }
 187
 188         Real get_feather() const { return adj_feather.get_value(); }
 189         void set_feather(Real x) { return adj_feather.set_value(x); }
 190
 191         Real get_gthres() const { return adj_globalthres.get_value(); }
 192         void set_gthres(Real x) { return adj_globalthres.set_value(x); }
 193
 194         Real get_lthres() const { return adj_localthres.get_value(); }
 195         void set_lthres(Real x) { return adj_localthres.set_value(x); }
 196
 197         bool get_local_error_flag() const { return check_localerror.get_active(); }
 198         void set_local_error_flag(bool x) { check_localerror.set_active(x); }
 199
 200         bool get_min_pressure_flag()const { return check_min_pressure.get_active(); }
 201         void set_min_pressure_flag(bool x) { check_min_pressure.set_active(x); }
 202
 203         void load_settings();
 204         void save_settings();
 205         void increment_id();
 206
 207         Smach::event_result event_stop_handler(const Smach::event& x);
 208
 209         Smach::event_result event_refresh_handler(const Smach::event& x);
 210
 211         Smach::event_result event_mouse_down_handler(const Smach::event& x);
 212
 213         Smach::event_result event_stroke(const Smach::event& x);
 214         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 215         void refresh_tool_options();
 216
 217         Smach::event_result process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag=false);
 218
 219         bool process_queue();
 220
 221
 222         StateDraw_Context(CanvasView* canvas_view);
 223
 224         ~StateDraw_Context();
 225
 226         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 227         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 228         synfig::Time get_time()const { return get_canvas_interface()->get_time(); }
 229         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 230         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 231
 232         //void on_user_click(synfig::Point point);
 233
 234 //      bool run();
 235 };      // END of class StateDraw_Context
 236
 237
 238 /* === M E T H O D S ======================================================= */
 239
 240 StateDraw::StateDraw():
 241         Smach::state<StateDraw_Context>("draw")
 242 {
 243         insert(event_def(EVENT_STOP,&StateDraw_Context::event_stop_handler));
 244         insert(event_def(EVENT_REFRESH,&StateDraw_Context::event_refresh_handler));
 245         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateDraw_Context::event_mouse_down_handler));
 246         insert(event_def(EVENT_WORKAREA_STROKE,&StateDraw_Context::event_stroke));
 247         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateDraw_Context::event_refresh_tool_options));
 248 }
 249
 250 StateDraw::~StateDraw()
 251 {
 252 }
 253
 254
 255 void
 256 StateDraw_Context::load_settings()
 257 {
 258         String value;
 259
 260         if(settings.get_value("draw.id",value))
 261                 set_id(value);
 262         else
 263                 set_id("NewDrawing");
 264
 265         if(settings.get_value("draw.pressure_width",value) && value=="0")
 266                 set_pressure_width_flag(false);
 267         else
 268                 set_pressure_width_flag(true);
 269
 270         if(settings.get_value("draw.auto_loop",value) && value=="0")
 271                 set_auto_loop_flag(false);
 272         else
 273                 set_auto_loop_flag(true);
 274
 275         if(settings.get_value("draw.auto_extend",value) && value=="0")
 276                 set_auto_extend_flag(false);
 277         else
 278                 set_auto_extend_flag(true);
 279
 280         if(settings.get_value("draw.auto_link",value) && value=="0")
 281                 set_auto_link_flag(false);
 282         else
 283                 set_auto_link_flag(true);
 284
 285         if(settings.get_value("draw.region",value) && value=="0")
 286                 set_region_flag(false);
 287         else
 288                 set_region_flag(true);
 289
 290         if(settings.get_value("draw.outline",value) && value=="0")
 291                 set_outline_flag(false);
 292         else
 293                 set_outline_flag(true);
 294
 295         if(settings.get_value("draw.auto_export",value) && value=="1")
 296                 set_auto_export_flag(true);
 297         else
 298                 set_auto_export_flag(false);
 299
 300         if(settings.get_value("draw.min_pressure_on",value) && value=="0")
 301                 set_min_pressure_flag(false);
 302         else
 303                 set_min_pressure_flag(true);
 304
 305         if(settings.get_value("draw.min_pressure",value))
 306         {
 307                 Real n = atof(value.c_str());
 308                 set_min_pressure(n);
 309         }else
 310                 set_min_pressure(0);
 311
 312         if(settings.get_value("draw.feather",value))
 313         {
 314                 Real n = atof(value.c_str());
 315                 set_feather(n);
 316         }else
 317                 set_feather(0);
 318
 319         if(settings.get_value("draw.gthreshold",value))
 320         {
 321                 Real n = atof(value.c_str());
 322                 set_gthres(n);
 323         }
 324
 325         if(settings.get_value("draw.lthreshold",value))
 326         {
 327                 Real n = atof(value.c_str());
 328                 set_lthres(n);
 329         }
 330
 331         if(settings.get_value("draw.localize",value) && value == "1")
 332                 set_local_error_flag(true);
 333         else
 334                 set_local_error_flag(false);
 335 }
 336
 337 void
 338 StateDraw_Context::save_settings()
 339 {
 340         settings.set_value("draw.id",get_id().c_str());
 341         settings.set_value("draw.pressure_width",get_pressure_width_flag()?"1":"0");
 342         settings.set_value("draw.auto_loop",get_auto_loop_flag()?"1":"0");
 343         settings.set_value("draw.auto_extend",get_auto_extend_flag()?"1":"0");
 344         settings.set_value("draw.auto_link",get_auto_link_flag()?"1":"0");
 345         settings.set_value("draw.region",get_region_flag()?"1":"0");
 346         settings.set_value("draw.outline",get_outline_flag()?"1":"0");
 347         settings.set_value("draw.auto_export",get_auto_export_flag()?"1":"0");
 348         settings.set_value("draw.min_pressure",strprintf("%f",get_min_pressure()));
 349         settings.set_value("draw.feather",strprintf("%f",get_feather()));
 350         settings.set_value("draw.min_pressure_on",get_min_pressure_flag()?"1":"0");
 351         settings.set_value("draw.gthreshold",strprintf("%f",get_gthres()));
 352         settings.set_value("draw.lthreshold",strprintf("%f",get_lthres()));
 353         settings.set_value("draw.localize",get_local_error_flag()?"1":"0");
 354 }
 355
 356 void
 357 StateDraw_Context::increment_id()
 358 {
 359         String id(get_id());
 360         int number=1;
 361         int digits=0;
 362
 363         if(id.empty())
 364                 id="Drawing";
 365
 366         // If there is a number
 367         // already at the end of the
 368         // id, then remove it.
 369         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 370         {
 371                 // figure out how many digits it is
 372                 for (digits = 0;
 373                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 374                          digits++)
 375                         ;
 376
 377                 String str_number;
 378                 str_number=String(id,id.size()-digits,id.size());
 379                 id=String(id,0,id.size()-digits);
 380                 // synfig::info("---------------- \"%s\"",str_number.c_str());
 381
 382                 number=atoi(str_number.c_str());
 383         }
 384         else
 385         {
 386                 number=1;
 387                 digits=3;
 388         }
 389
 390         number++;
 391
 392         // Add the number back onto the id
 393         {
 394                 const String format(strprintf("%%0%dd",digits));
 395                 id+=strprintf(format.c_str(),number);
 396         }
 397
 398         // Set the ID
 399         set_id(id);
 400 }
 401
 402 StateDraw_Context::StateDraw_Context(CanvasView* canvas_view):
 403         canvas_view_(canvas_view),
 404         is_working(*canvas_view),
 405         loop_(false),
 406         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 407         settings(synfigapp::Main::get_selected_input_device()->settings()),
 408         entry_id(),
 409         checkbutton_pressure_width(_("Pressure Width")),
 410         checkbutton_auto_loop(_("Auto Loop")),
 411         checkbutton_auto_extend(_("Auto Extend")),
 412         checkbutton_auto_link(_("Auto Link")),
 413         checkbutton_region(_("Create Region BLine")),
 414         checkbutton_outline(_("Create Outline BLine")),
 415         checkbutton_auto_export(_("Auto Export")),
 416         button_fill_last_stroke(_("Fill Last Stroke")),
 417         adj_min_pressure(0,0,1,0.01,0.1),
 418         spin_min_pressure(adj_min_pressure,0.1,3),
 419         check_min_pressure(_("Min Pressure")),
 420         adj_feather(0,0,10000,0.01,0.1),
 421         spin_feather(adj_feather,0.01,4),
 422         adj_globalthres(.70f,0.01,10000,0.01,0.1),
 423         spin_globalthres(adj_globalthres,0.01,3),
 424         adj_localthres(20,1,100000,0.1,1),
 425         check_localerror(_("LocalError"))
 426
 427 {
 428         nested=0;
 429         load_settings();
 430
 431         UpdateErrorBox();
 432
 433         options_table.attach(*manage(new Gtk::Label(_("Draw Tool"))),   0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 434         options_table.attach(entry_id,                                                                  0, 2,  1,  2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 435         options_table.attach(checkbutton_outline,                                               0, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 436         options_table.attach(checkbutton_region,                                                0, 2,  3,  4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 437         options_table.attach(checkbutton_auto_loop,                                             0, 2,  4,  5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 438         options_table.attach(checkbutton_auto_extend,                                   0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 439         options_table.attach(checkbutton_auto_link,                                             0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 440         options_table.attach(checkbutton_auto_export,                                   0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 441         options_table.attach(checkbutton_pressure_width,                                0, 2,  8,  9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 442         options_table.attach(check_localerror,                                                  0, 2,  9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 443
 444         options_table.attach(check_min_pressure,                                                0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 445         options_table.attach(spin_min_pressure,                                                 1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 446
 447         options_table.attach(*manage(new Gtk::Label(_("Smooth"))),              0, 1, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 448         options_table.attach(spin_globalthres,                                                  1, 2, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 449
 450         options_table.attach(*manage(new Gtk::Label(_("Feather"))),     0, 1, 12, 13, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 451         options_table.attach(spin_feather,                                                              1, 2, 12, 13, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 452
 453         //options_table.attach(button_fill_last_stroke, 0, 2, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 454
 455         button_fill_last_stroke.signal_pressed().connect(sigc::mem_fun(*this,&StateDraw_Context::fill_last_stroke));
 456         check_localerror.signal_toggled().connect(sigc::mem_fun(*this,&StateDraw_Context::UpdateErrorBox));
 457
 458         options_table.show_all();
 459         refresh_tool_options();
 460         //App::dialog_tool_options->set_widget(options_table);
 461         App::dialog_tool_options->present();
 462
 463
 464         old_duckmask=get_work_area()->get_type_mask();
 465         get_work_area()->set_type_mask(Duck::TYPE_ALL-Duck::TYPE_TANGENT-Duck::TYPE_WIDTH);
 466
 467         // Turn off layer clicking
 468         get_work_area()->set_allow_layer_clicks(false);
 469
 470         // Turn off duck clicking
 471         get_work_area()->set_allow_duck_clicks(false);
 472
 473         // clear out the ducks
 474         //get_work_area()->clear_ducks();
 475
 476         // Refresh the work area
 477         //get_work_area()->queue_draw();
 478
 479         // Hide the tables if they are showing
 480         prev_table_status=get_canvas_view()->tables_are_visible();
 481         //if(prev_table_status)get_canvas_view()->hide_tables();
 482
 483         // Disable the time bar
 484         get_canvas_view()->set_sensitive_timebar(false);
 485
 486         // Connect a signal
 487         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateDraw_Context::on_user_click));
 488
 489         get_canvas_view()->work_area->set_cursor(Gdk::PENCIL);
 490
 491         App::toolbox->refresh();
 492
 493         refresh_ducks();
 494 }
 495
 496
 497 void StateDraw_Context::UpdateErrorBox()
 498 {
 499         if(get_local_error_flag())
 500         {
 501                 spin_globalthres.set_adjustment(adj_localthres);
 502                 spin_globalthres.set_value(adj_localthres.get_value());
 503                 spin_globalthres.set_increments(0.1,1);
 504         }else
 505         {
 506                 spin_globalthres.set_adjustment(adj_globalthres);
 507                 spin_globalthres.set_value(adj_globalthres.get_value());
 508                 spin_globalthres.set_increments(0.01,.1);
 509         }
 510
 511         spin_globalthres.update();
 512 }
 513
 514 void
 515 StateDraw_Context::refresh_tool_options()
 516 {
 517         App::dialog_tool_options->clear();
 518         App::dialog_tool_options->set_widget(options_table);
 519         App::dialog_tool_options->set_local_name(_("Draw Tool"));
 520         App::dialog_tool_options->set_name("draw");
 521
 522         App::dialog_tool_options->add_button(
 523                 Gtk::StockID("synfig-fill"),
 524                 _("Fill Last Stroke")
 525         )->signal_clicked().connect(
 526                 sigc::mem_fun(
 527                         *this,
 528                         &StateDraw_Context::fill_last_stroke));
 529 }
 530
 531 Smach::event_result
 532 StateDraw_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 533 {
 534         refresh_tool_options();
 535         return Smach::RESULT_ACCEPT;
 536 }
 537
 538 StateDraw_Context::~StateDraw_Context()
 539 {
 540         save_settings();
 541
 542         App::dialog_tool_options->clear();
 543
 544         get_work_area()->set_type_mask(old_duckmask);
 545
 546         get_canvas_view()->work_area->reset_cursor();
 547
 548         // Restore layer clicking
 549         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 550
 551         // Restore duck clicking
 552         get_work_area()->set_allow_duck_clicks(true);
 553
 554         // Enable the time bar
 555         get_canvas_view()->set_sensitive_timebar(true);
 556
 557         // Bring back the tables if they were out before
 558         if(prev_table_status)get_canvas_view()->show_tables();
 559
 560         // Refresh the work area
 561         get_work_area()->queue_draw();
 562
 563         App::toolbox->refresh();
 564 }
 565
 566 Smach::event_result
 567 StateDraw_Context::event_stop_handler(const Smach::event& /*x*/)
 568 {
 569         throw Smach::egress_exception();
 570 }
 571
 572 Smach::event_result
 573 StateDraw_Context::event_refresh_handler(const Smach::event& /*x*/)
 574 {
 575         refresh_ducks();
 576         return Smach::RESULT_ACCEPT;
 577 }
 578
 579 Smach::event_result
 580 StateDraw_Context::event_mouse_down_handler(const Smach::event& x)
 581 {
 582         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 583         switch(event.button)
 584         {
 585         case BUTTON_LEFT:
 586                 {
 587                         // Enter the stroke state to get the stroke
 588                         get_canvas_view()->get_smach().push_state(&state_stroke);
 589                         return Smach::RESULT_ACCEPT;
 590                 }
 591
 592         case BUTTON_RIGHT: // Intercept the right-button click to short-circuit the pop-up menu
 593                 if (!getenv("SYNFIG_ENABLE_POPUP_MENU_IN_ALL_TOOLS"))
 594                         return Smach::RESULT_ACCEPT;
 595
 596         default:
 597                 return Smach::RESULT_OK;
 598         }
 599 }
 600
 601 #define SIMILAR_TANGENT_THRESHOLD       (0.2)
 602
 603 struct debugclass
 604 {
 605         synfig::String x;
 606         debugclass(const synfig::String &x):x(x)
 607         {
 608 //              synfig::warning(">>>>>>>>>>>>>>>>>>> "+x);
 609         }
 610         ~debugclass()
 611         {
 612 //              synfig::warning("<<<<<<<<<<<<<<<<<<< "+x);
 613         }
 614 };
 615
 616 struct DepthCounter
 617 {
 618         int &i;
 619         DepthCounter(int &i):i(i) { i++; }
 620         ~DepthCounter() { i--; }
 621 };
 622
 623 Smach::event_result
 624 StateDraw_Context::event_stroke(const Smach::event& x)
 625 {
 626 //      debugclass debugger("StateDraw_Context::event_stroke(const Smach::event& x)");
 627
 628         const EventStroke& event(*reinterpret_cast<const EventStroke*>(&x));
 629
 630         assert(event.stroke_data);
 631
 632         get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
 633
 634         if(nested==0)
 635         {
 636                 DirtyTrap dirty_trap(get_work_area());
 637                 Smach::event_result result;
 638                 result=process_stroke(event.stroke_data,event.width_data,event.modifier&Gdk::CONTROL_MASK || event.modifier&Gdk::BUTTON2_MASK);
 639                 process_queue();
 640                 return result;
 641         }
 642
 643         stroke_queue.push_back(pair<StrokeData,WidthData>(event.stroke_data,event.width_data));
 644
 645         return Smach::RESULT_ACCEPT;
 646 }
 647
 648 bool
 649 StateDraw_Context::process_queue()
 650 {
 651 //      debugclass debugger("StateDraw_Context::process_queue()");
 652         if(nested)
 653                 return true;
 654         DepthCounter depth_counter(nested);
 655         while(!stroke_queue.empty())
 656         {
 657                 pair<StrokeData,WidthData> front(stroke_queue.front());
 658                 process_stroke(front.first,front.second);
 659                 stroke_queue.pop_front();
 660         }
 661         return false;
 662 }
 663
 664 Smach::event_result
 665 StateDraw_Context::process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag)
 666 {
 667 //      debugclass debugger("StateDraw_Context::process_stroke");
 668         DepthCounter depth_counter(nested);
 669
 670         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);
 671
 672
 673         // If we aren't using pressure width,
 674         // then set all the width to 1
 675         if(!get_pressure_width_flag())
 676         {
 677                 std::list<synfig::Real>::iterator iter;
 678                 for(iter=width_data->begin();iter!=width_data->end();++iter)
 679                 {
 680                         *iter=1.0;
 681                 }
 682         }
 683
 684         //get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
 685         //stroke_list.push_back(event.stroke_data);
 686         //refresh_ducks();
 687
 688         std::list<synfig::BLinePoint> bline;
 689         bool loop_bline_flag(false);
 690
 691         //Changed by Adrian - use resident class :)
 692         //synfigapp::convert_stroke_to_bline(bline, *event.stroke_data,*event.width_data, synfigapp::Main::get_bline_width());
 693         blineconv.width = synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc());
 694
 695         if(get_local_error_flag())
 696         {
 697                 float pw = get_work_area()->get_pw();
 698                 float ph = get_work_area()->get_ph();
 699
 700                 blineconv.pixelwidth = sqrt(pw*pw+ph*ph);
 701                 blineconv.smoothness = get_lthres();
 702         }else
 703         {
 704                 blineconv.pixelwidth = 1;
 705                 blineconv.smoothness = get_gthres();
 706         }
 707
 708         blineconv(bline,*stroke_data,*width_data);
 709
 710         //Postprocess to require minimum pressure
 711         if(get_min_pressure_flag())
 712         {
 713                 synfigapp::BLineConverter::EnforceMinWidth(bline,get_min_pressure());
 714         }
 715
 716         // If the start and end points are similar, then make them the same point
 717         if (get_auto_loop_flag() &&
 718                 bline.size() > 2 &&
 719                 (bline.front().get_vertex() - bline.back().get_vertex()).mag() <= radius)
 720         {
 721                 loop_bline_flag=true;
 722                 Vector tangent;
 723                 Real width(0);
 724
 725                 while (bline.size() > 2 &&
 726                            (bline.front().get_vertex() - bline.back().get_vertex()).mag() <= radius)
 727                 {
 728                         tangent=bline.back().get_tangent1();
 729                         width=bline.back().get_width();
 730                         bline.pop_back();
 731                 }
 732
 733                 if(abs(bline.front().get_tangent1().norm()*tangent.norm().perp())>SIMILAR_TANGENT_THRESHOLD)
 734                 {
 735                         // If the tangents are not similar, then
 736                         // split the tangents
 737                         bline.front().set_split_tangent_flag(true);
 738                         bline.front().set_tangent1(tangent);
 739                 }
 740                 else
 741                 {
 742                         // If the tangents are similar, then set the tangent
 743                         // to the average of the two
 744                         bline.front().set_tangent((tangent+bline.front().get_tangent1())*0.5f);
 745                 }
 746
 747                 // Add the widths of the two points
 748                 {
 749                         Real tmp_width(bline.front().get_width()+width);
 750                         tmp_width=tmp_width<=1?tmp_width:1;
 751                         bline.front().set_width(tmp_width);
 752                 }
 753         }
 754
 755         // If the bline only has one blinepoint, then there is nothing to do.
 756         if(bline.size() < 2)
 757         {
 758                 // hide the 'stroke' line we were drawing, unless the user
 759                 // explicitly requests that they are kept
 760                 if (!getenv("SYNFIG_KEEP_ABORTED_DRAW_LINES"))
 761                         refresh_ducks();
 762
 763                 return Smach::RESULT_OK;
 764         }
 765
 766         if(region_flag)
 767                 return new_region(bline,radius);
 768
 769         return new_bline(bline,loop_bline_flag,radius);
 770 }
 771
 772 Smach::event_result
 773 StateDraw_Context::new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius)
 774 {
 775         synfigapp::SelectionManager::LayerList layer_list = get_canvas_view()->get_selection_manager()->get_selected_layers();
 776
 777         // Create the action group
 778         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Sketch BLine"));
 779
 780         bool shift_origin = false;
 781         Vector shift_origin_vector;
 782         bool join_start_no_extend=false,join_finish_no_extend=false;
 783         synfigapp::ValueDesc start_duck_value_desc,finish_duck_value_desc;
 784         bool extend_start=false,extend_finish=false,complete_loop=false;
 785         bool extend_start_join_same=false,extend_start_join_different=false;
 786         bool extend_finish_join_same=false,extend_finish_join_different=false;
 787         int start_duck_index = 0,finish_duck_index = 0; // initialized to keep the compiler happy; shouldn't be needed though
 788         ValueNode_BLine::Handle start_duck_value_node_bline=NULL,finish_duck_value_node_bline=NULL;
 789
 790         // Find any ducks at the start or end that we might attach to
 791         // (this used to only run if we didn't just draw a loop - ie. !loop_bline_flag
 792         // but having loops auto-connect can be useful as well)
 793         if(get_auto_extend_flag() || get_auto_link_flag())
 794         {
 795                 etl::handle<Duck> start_duck(get_work_area()->find_duck(bline.front().get_vertex(),radius,Duck::TYPE_VERTEX));
 796                 etl::handle<Duck> finish_duck(get_work_area()->find_duck(bline.back().get_vertex(),radius,Duck::TYPE_VERTEX));
 797
 798                 // check whether the start of the new line extends an
 799                 // existing line.  this is only the case if the new
 800                 // line isn't a self-contained loop, and if the new
 801                 // line starts at one of the ends of an existing line
 802                 if(start_duck)do
 803                 {
 804                         if(!(start_duck_value_desc=start_duck->get_value_desc()))break;
 805                         if(loop_bline_flag)break; // loops don't extend anything
 806                         if(!start_duck_value_desc.parent_is_value_node())break;
 807                         start_duck_index=start_duck_value_desc.get_index(); // which point on the line did we start drawing at
 808                         start_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(start_duck_value_desc.get_parent_value_node());
 809                         if(!get_auto_extend_flag())break;
 810
 811                         // don't extend looped blines
 812                         if(start_duck_value_node_bline&&!start_duck_value_node_bline->get_loop()&&
 813                            // did we start drawing at either end of the line?
 814                            (start_duck_index==0||start_duck_index==start_duck_value_node_bline->link_count()-1))
 815                         {
 816                                 extend_start=true;
 817                                 shift_origin=true;
 818                                 shift_origin_vector=start_duck->get_origin();
 819                         }
 820                 }while(0);
 821
 822                 // check whether the end of the new line extends an
 823                 // existing line.  this is only the case if the new
 824                 // line isn't a self-contained loop, and if the new
 825                 // line ends at one of the ends of an existing line
 826                 if(finish_duck)do
 827                 {
 828                         if(!(finish_duck_value_desc=finish_duck->get_value_desc()))break;
 829                         if(loop_bline_flag)break;
 830                         if(!finish_duck_value_desc.parent_is_value_node())break;
 831                         finish_duck_index=finish_duck_value_desc.get_index();
 832                         finish_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(finish_duck_value_desc.get_parent_value_node());
 833                         if(!get_auto_extend_flag())break;
 834
 835                         // don't extend looped blines
 836                         if(finish_duck_value_node_bline&&!finish_duck_value_node_bline->get_loop()&&
 837                            (finish_duck_index==0||finish_duck_index==finish_duck_value_node_bline->link_count()-1))
 838                         {
 839                                 if(extend_start)
 840                                 {
 841                                         // we've started and finished drawing at the end of a bline.  we can't
 842                                         // extend both blines, so unless we started and finished at the 2 ends
 843                                         // of the same bline, only extend the one we started on
 844                                         if(start_duck_value_node_bline==finish_duck_value_node_bline)
 845                                                 complete_loop=extend_finish=true;
 846                                 }else{
 847                                         extend_finish=true;
 848                                         shift_origin=true;
 849                                         shift_origin_vector=finish_duck->get_origin();
 850                                 }
 851                         }
 852                 }while(0);
 853
 854                 // if the new line's start didn't extend an existing line,
 855                 // check whether it needs to be linked to an existing duck
 856                 if(!extend_start&&get_auto_link_flag()&&start_duck&&start_duck_value_desc)
 857                         switch(start_duck_value_desc.get_value_type())
 858                         {
 859                         case synfig::ValueBase::TYPE_BLINEPOINT:
 860                                 start_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_desc.get_value_node()),0);
 861                                 // fall through
 862                         case synfig::ValueBase::TYPE_VECTOR:
 863                                 if (shift_origin && shift_origin_vector != start_duck->get_origin())
 864                                         break;
 865                                 shift_origin = true;
 866                                 shift_origin_vector = start_duck->get_origin();
 867                                 get_canvas_interface()->auto_export(start_duck_value_desc);
 868                                 if (extend_finish)
 869                                         if(start_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 870                                                 extend_finish_join_same=true;
 871                                         else
 872                                                 extend_finish_join_different=true;
 873                                 else
 874                                         join_start_no_extend=true;
 875                                 // fall through
 876                         default:break;
 877                         }
 878
 879                 // if the new line's end didn't extend an existing line,
 880                 // check whether it needs to be linked to an existing duck
 881                 if(!extend_finish&&get_auto_link_flag()&&finish_duck&&finish_duck_value_desc)
 882                         switch(finish_duck_value_desc.get_value_type())
 883                         {
 884                         case synfig::ValueBase::TYPE_BLINEPOINT:
 885                                 finish_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_desc.get_value_node()),0);
 886                                 // fall through
 887                         case synfig::ValueBase::TYPE_VECTOR:
 888                                 if (shift_origin && shift_origin_vector != finish_duck->get_origin())
 889                                         break;
 890                                 shift_origin = true;
 891                                 shift_origin_vector = finish_duck->get_origin();
 892                                 get_canvas_interface()->auto_export(finish_duck_value_desc);
 893                                 if(extend_start)
 894                                         if(finish_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 895                                                 extend_start_join_same=true;
 896                                         else
 897                                                 extend_start_join_different=true;
 898                                 else
 899                                         join_finish_no_extend=true;
 900                                 // fall through
 901                         default:break;
 902                         }
 903         }
 904
 905         ValueNode_BLine::Handle value_node;
 906         std::list<synfig::BLinePoint> trans_bline;
 907
 908         {
 909                 std::list<synfig::BLinePoint>::iterator iter;
 910                 const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 911
 912                 for(iter=bline.begin();iter!=bline.end();++iter)
 913                 {
 914                         BLinePoint bline_point(*iter);
 915                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 916
 917                         bline_point.set_tangent1(
 918                                 transform.unperform(
 919                                         bline_point.get_tangent1()+bline_point.get_vertex()
 920                                 ) -new_vertex
 921                         );
 922
 923                         bline_point.set_tangent2(
 924                                 transform.unperform(
 925                                         bline_point.get_tangent2()+bline_point.get_vertex()
 926                                 ) -new_vertex
 927                         );
 928
 929                         if (shift_origin)
 930                                 new_vertex=new_vertex-shift_origin_vector;
 931
 932                         bline_point.set_vertex(new_vertex);
 933
 934                         trans_bline.push_back(bline_point);
 935                 }
 936                 value_node=ValueNode_BLine::create(synfig::ValueBase(trans_bline,loop_bline_flag));
 937
 938                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
 939                 Layer::Handle layer(get_canvas_view()->get_selection_manager()->get_selected_layer());
 940                 if (layer) canvas=layer->get_canvas();
 941                 value_node->set_member_canvas(canvas);
 942         }
 943
 944         Smach::event_result result;
 945         synfig::ValueNode_DynamicList::ListEntry source;
 946
 947         // the new line's start extends an existing line
 948         if(extend_start)
 949         {
 950                 int target_offset = 0;
 951                 if(complete_loop)trans_bline.pop_back();
 952                 trans_bline.pop_front();
 953                 if(start_duck_index==0)
 954                 {       // We need to reverse the BLine first.
 955                         reverse_bline(trans_bline);
 956                         result=extend_bline_from_begin(start_duck_value_node_bline,trans_bline,complete_loop);
 957                         source=start_duck_value_node_bline->list.front();
 958                         target_offset=trans_bline.size();
 959                 }
 960                 else
 961                 {
 962                         result=extend_bline_from_end(start_duck_value_node_bline,trans_bline,complete_loop);
 963                         source=start_duck_value_node_bline->list.back();
 964                 }
 965
 966                 if(extend_start_join_different)
 967                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 968                                 set_link(0,finish_duck_value_desc.get_value_node());
 969                 else if(extend_start_join_same)
 970                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 971                                 set_link(0,synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_node_bline->
 972                                                                                                         list[target_offset+finish_duck_index].value_node),0).get_value_node());
 973                 return result;
 974         }
 975
 976         // the new line's end extends an existing line
 977         if(extend_finish)
 978         {
 979                 int target_offset = 0;
 980                 trans_bline.pop_back();
 981                 if(finish_duck_index==0)
 982                 {
 983                         result=extend_bline_from_begin(finish_duck_value_node_bline,trans_bline,false);
 984                         source=finish_duck_value_node_bline->list.front();
 985                         target_offset=trans_bline.size();
 986                 }
 987                 else
 988                 {       // We need to reverse the BLine first.
 989                         reverse_bline(trans_bline);
 990                         result=extend_bline_from_end(finish_duck_value_node_bline,trans_bline,false);
 991                         source=finish_duck_value_node_bline->list.back();
 992                 }
 993
 994                 if(extend_finish_join_different)
 995                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 996                                 set_link(0,start_duck_value_desc.get_value_node());
 997                 else if(extend_finish_join_same)
 998                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 999                                 set_link(0,synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_node_bline->
1000                                                                                                         list[target_offset+start_duck_index].value_node),0).get_value_node());
1001                 return result;
1002         }
1003
1004         if (join_start_no_extend)
1005                 LinkableValueNode::Handle::cast_dynamic(value_node->list.front().value_node)->
1006                   set_link(0,start_duck_value_desc.get_value_node());
1007
1008         if (join_finish_no_extend)
1009                 LinkableValueNode::Handle::cast_dynamic(value_node->list.back().value_node)->
1010                   set_link(0,finish_duck_value_desc.get_value_node());
1011
1012         if(get_auto_export_flag())
1013                 if (!get_canvas_interface()->add_value_node(value_node,get_id()))
1014                 {
1015                         /* it's no big deal, is it?  let's keep the shape anyway */
1016                         // get_canvas_view()->get_ui_interface()->error(_("Unable to add value node"));
1017                         // group.cancel();
1018                         // increment_id();
1019                         // return Smach::RESULT_ERROR;
1020                 }
1021
1022         last_stroke=value_node;
1023         last_stroke_id=get_id();
1024
1025         {
1026                 // Create the layer(s)
1027                 Layer::Handle layer;
1028                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
1029                 int depth(0);
1030
1031                 // we are temporarily using the layer to hold something
1032                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1033                 if(layer)
1034                 {
1035                         depth=layer->get_depth();
1036                         canvas=layer->get_canvas();
1037                 }
1038
1039                 // fill_last_stroke() will take care of clearing the selection if we're calling it
1040                 if(get_outline_flag() && get_region_flag())
1041                         fill_last_stroke_and_unselect_other_layers();
1042                 else
1043                         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
1044
1045                 //int number(synfig::UniqueID().get_uid());
1046
1047                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1048
1049                 // if they're both defined, we'll add the region later
1050                 if(get_outline_flag())
1051                 {
1052                         layer=get_canvas_interface()->add_layer_to("outline",canvas,depth);
1053                         layer->set_description(get_id()+_(" Outline"));
1054                 }
1055                 else
1056                 {
1057                         layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
1058                         layer->set_description(get_id()+_(" Region"));
1059                 }
1060
1061                 if(get_feather())
1062                 {
1063                         layer->set_param("feather",get_feather());
1064                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
1065                 }
1066                 assert(layer);
1067                 //layer->set_description(strprintf("Stroke %d",number));
1068                 //get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
1069
1070                 if (shift_origin)
1071                         get_canvas_interface()->
1072                           change_value(synfigapp::ValueDesc(layer,"origin"),shift_origin_vector);
1073
1074                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1075
1076                 assert(action);
1077
1078                 action->set_param("canvas",get_canvas());
1079                 action->set_param("canvas_interface",get_canvas_interface());
1080                 action->set_param("layer",layer);
1081                 if(!action->set_param("param",String("bline")))
1082                         synfig::error("LayerParamConnect didn't like \"param\"");
1083                 if(!action->set_param("value_node",ValueNode::Handle(value_node)))
1084                         synfig::error("LayerParamConnect didn't like \"value_node\"");
1085
1086                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1087                 {
1088                         get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
1089                         group.cancel();
1090                         increment_id();
1091                         //refresh_ducks();
1092                         return Smach::RESULT_ERROR;
1093                 }
1094                 layer_list.push_back(layer);
1095                 get_canvas_view()->get_selection_manager()->set_selected_layers(layer_list);
1096                 //refresh_ducks();
1097         }
1098
1099         increment_id();
1100         return Smach::RESULT_ACCEPT;
1101 }
1102
1103 #ifdef _DEBUG
1104 static void
1105 debug_show_vertex_list(int iteration, std::list<synfigapp::ValueDesc>& vertex_list,
1106                                            std::string title, int current)
1107 {
1108         std::list<synfigapp::ValueDesc>::iterator i = vertex_list.begin();
1109         printf("\n%s\n  ----- iter %d : ", title.c_str(), iteration);
1110         int c = 0;
1111         synfig::LinkableValueNode::Handle last = 0;
1112         int start = -1;
1113         int index;
1114         int prev;
1115         int dir = 0;
1116         bool started = false;
1117         for(;i!=vertex_list.end();i++,c++)
1118         {
1119                 synfigapp::ValueDesc value_desc(*i);
1120
1121                 if (value_desc.parent_is_value_node()) {
1122                         if(value_desc.parent_is_linkable_value_node())
1123                         {
1124                                 index = value_desc.get_index();
1125                                 // printf("<%d>", index);
1126                                 if (last == synfig::LinkableValueNode::Handle::cast_reinterpret(value_desc.get_parent_value_node()))
1127                                 {
1128                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1129                                         if (start != -1)
1130                                         {
1131                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1132                                                 if (c == current)
1133                                                 {
1134                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1135                                                         if (dir)
1136                                                         {
1137                                                                 if (started) printf(", "); else started = true;
1138                                                                 printf("%d--%d", start, prev);
1139                                                         }
1140                                                         else
1141                                                         {
1142                                                                 if (started) printf(", "); else started = true;
1143                                                                 printf("%d", start);
1144                                                         }
1145                                                         printf(", *%d*", index);
1146                                                         start = -1;
1147                                                 }
1148                                                 else if (dir == 0)
1149                                                 {
1150                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1151                                                         if (index == start + 1)
1152                                                         {
1153                                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1154                                                                 dir = 1;
1155                                                                 prev = index;
1156                                                         }
1157                                                         else if (index == start - 1)
1158                                                         {
1159                                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1160                                                                 dir = -1;
1161                                                                 prev = index;
1162                                                         }
1163                                                         else
1164                                                         {
1165                                                                 if (started) printf(", "); else started = true;
1166                                                                 printf("%d", start);
1167                                                                 start = index;
1168                                                         }
1169                                                 }
1170                                                 else if (index == prev + dir)
1171                                                 {
1172                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1173                                                         prev = index;
1174                                                 }
1175                                                 else
1176                                                 {
1177                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1178                                                         if (started) printf(", "); else started = true;
1179                                                         if (prev != start)
1180                                                                 printf("%d--%d", start, prev);
1181                                                         else
1182                                                                 printf("%d", start);
1183                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1184                                                         start = index;
1185                                                         dir = 0;
1186                                                 }
1187                                         }
1188                                         else
1189                                         {
1190                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1191                                                 if (c == current)
1192                                                 {
1193                                                         if (started) printf(", "); else started = true;
1194                                                         printf("*%d*", index);
1195                                                 }
1196                                                 else
1197                                                 {
1198                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1199                                                         start = index;
1200                                                         dir = 0;
1201                                                 }
1202                                         }
1203                                 }
1204                                 else
1205                                 {
1206                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1207                                         if (last)
1208                                         {
1209                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1210                                                 if (start != -1)
1211                                                 {
1212                                                         if (started) printf(", "); else started = true;
1213                                                         if (dir != 0)
1214                                                                 printf("%d--%d", start, prev);
1215                                                         else
1216                                                                 printf("%d", start);
1217                                                 }
1218                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1219                                                 printf(") ");
1220                                         }
1221                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1222                                         last = synfig::LinkableValueNode::Handle::cast_reinterpret(value_desc.get_parent_value_node());
1223                                         printf("%d:(", synfig::LinkableValueNode::Handle::cast_reinterpret(value_desc.get_parent_value_node())->link_count());
1224                                         started = false;
1225                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1226                                         if (c == current)
1227                                         {
1228                                                 start = -1;
1229                                                 printf("*%d*", index);
1230                                         }
1231                                         else
1232                                         {
1233                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1234                                                 start = index;
1235                                                 dir = 0;
1236                                         }
1237                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1238                                 }
1239                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1240                         }
1241                         else if (last)
1242                                 if (last) printf("?!) ");
1243                 }
1244                 else
1245                 {
1246                         last = 0;
1247                         printf("? ");
1248                 }
1249         }
1250         if (last)
1251         {
1252                 if (started) printf(", "); else started = true;
1253                 if (start != -1)
1254                 {
1255                         if (dir != 0)
1256                                 printf("%d--%d", start, prev);
1257                         else
1258                                 printf("%d", start);
1259                 }
1260                 printf(")");
1261         }
1262         printf("\n");
1263 }
1264 #else  // _DEBUG
1265 #define debug_show_vertex_list(a,b,c,d)
1266 #endif  // _DEBUG
1267
1268 Smach::event_result
1269 StateDraw_Context::new_region(std::list<synfig::BLinePoint> bline, synfig::Real radius)
1270 {
1271         // Create the action group
1272         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Define Region"));
1273
1274         std::list<synfigapp::ValueDesc> vertex_list;
1275
1276         printf("new_region with %d bline points\n", bline.size());
1277
1278         // First we need to come up with a rough list of
1279         // BLinePoints that we are going to be using to
1280         // define our region.
1281         {
1282                 std::list<synfig::BLinePoint>::iterator iter;
1283                 for(iter=bline.begin();iter!=bline.end();++iter)
1284                 {
1285                         etl::handle<Duck> duck(get_work_area()->find_duck(iter->get_vertex(),0,Duck::TYPE_VERTEX));
1286
1287                         if(!duck)
1288                         {
1289                                 synfig::info(__FILE__":%d: Nothing to enclose!",__LINE__);
1290                                 return Smach::RESULT_OK;
1291                         }
1292
1293                         assert(duck->get_type()==Duck::TYPE_VERTEX);
1294
1295                         synfigapp::ValueDesc value_desc(duck->get_value_desc());
1296
1297                         if(!value_desc)
1298                         {
1299                                 synfig::info(__FILE__":%d: Got a hit, but no ValueDesc on this duck",__LINE__);
1300                                 continue;
1301                         }
1302
1303                         switch(value_desc.get_value_type())
1304                         {
1305                         case synfig::ValueBase::TYPE_BLINEPOINT:
1306                                 //if(vertex_list.empty() || value_desc!=vertex_list.back())
1307                                 vertex_list.push_back(value_desc);
1308                                 assert(vertex_list.back().is_valid());
1309
1310                                 break;
1311                         default:
1312                                 break;
1313                         }
1314                 }
1315         }
1316
1317         assert(vertex_list.back().is_valid());
1318
1319         printf("vertex list with %d bline points\n", vertex_list.size());
1320
1321         // Remove any duplicates
1322         {
1323         }
1324
1325         ValueNode_BLine::Handle value_node_bline;
1326
1327         // Now we need to test for the trivial case,
1328         // which is where all of the vertices
1329         // come from one BLine.
1330         if(vertex_list.front().parent_is_linkable_value_node())
1331         {
1332                 bool trivial_case(true);
1333                 ValueNode::Handle trivial_case_value_node;
1334
1335                 trivial_case_value_node=vertex_list.front().get_parent_value_node();
1336
1337                 std::list<synfigapp::ValueDesc>::iterator iter;
1338                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1339                 {
1340                         if(trivial_case_value_node!=iter->get_parent_value_node())
1341                         {
1342                                 trivial_case=false;
1343                                 break;
1344                         }
1345                 }
1346
1347                 // \todo - re-enable this code
1348                 if(trivial_case && false)
1349                 {
1350                         synfig::info("all points are on the same bline, so just fill that line");
1351                         value_node_bline=ValueNode_BLine::Handle::cast_dynamic(trivial_case_value_node);
1352
1353                         synfig::info("the line has %d vertices", value_node_bline->link_count());
1354
1355                         if(value_node_bline->link_count() <= 2)
1356                         {
1357                                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1358                                 return Smach::RESULT_OK;
1359                         }
1360                 }
1361         }
1362
1363         if(!value_node_bline)
1364                 if(vertex_list.size()<=2)
1365                 {
1366                         synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1367                         return Smach::RESULT_OK;
1368                 }
1369
1370         // Now we need to clean the list of vertices up
1371         // a bit. This includes inserting missing vertices
1372         // and removing extraneous ones.
1373         // We can do this in multiple passes.
1374         if(!value_node_bline)
1375         {
1376                 debug_show_vertex_list(0, vertex_list, "before shifting stuff", -1);
1377                 // rearrange the list so that the first and last node are on different blines
1378                 std::list<synfigapp::ValueDesc>::iterator iter, start;
1379                 ValueNode::Handle last_value_node = vertex_list.back().get_parent_value_node();
1380                 for(iter = vertex_list.begin(); iter!=vertex_list.end(); iter++)
1381                         if (iter->get_parent_value_node() != last_value_node)
1382                         {
1383                                 vertex_list.insert(vertex_list.end(), vertex_list.begin(), iter);
1384                                 vertex_list.erase(vertex_list.begin(), iter);
1385                                 break;
1386                         }
1387
1388                 debug_show_vertex_list(0, vertex_list, "before detecting direction and limits", -1);
1389                 // rearrange the list so that the first and last node are on different blines
1390                 iter = vertex_list.begin();
1391                 while (iter!=vertex_list.end())
1392                 {
1393                         // make a note of which bline we're looking at
1394                         ValueNode::Handle parent_value_node = iter->get_parent_value_node();
1395                         start = iter;
1396                         int points_in_line = synfig::LinkableValueNode::Handle::cast_reinterpret(parent_value_node)->link_count();
1397                         bool looped = (*parent_value_node)(get_time()).get_loop();
1398                         int this_index, last_index = iter->get_index();
1399                         int min_index = last_index, max_index = last_index;
1400                         bool whole;
1401                         int direction = 0;
1402
1403                         // printf("there are %d points in this line - first is index %d\n", points_in_line, last_index);
1404
1405                         // while we're looking at the same bline, keep going
1406                         iter++;
1407                         while (iter != vertex_list.end() && iter->get_parent_value_node() == parent_value_node)
1408                         {
1409                                 this_index = iter->get_index();
1410                                 // printf("index went from %d to %d\n", last_index, this_index);
1411                                 if (looped)
1412                                 {
1413                                         if (this_index - last_index > points_in_line/2)
1414                                                 while (this_index - last_index > points_in_line/2)
1415                                                         this_index -= points_in_line;
1416                                         else if (last_index - this_index > points_in_line/2)
1417                                                 while (last_index - this_index > points_in_line/2)
1418                                                         this_index += points_in_line;
1419                                 }
1420
1421                                 if (this_index < min_index) min_index = this_index;
1422                                 if (this_index > max_index) max_index = this_index;
1423
1424                                 // printf("so let's imagine index went from %d to %d\n", last_index, this_index);
1425                                 if (this_index > last_index)
1426                                         direction++;
1427                                 else if (this_index < last_index)
1428                                         direction--;
1429
1430                                 last_index = this_index;
1431                                 iter++;
1432                         }
1433
1434                         // printf("min %d and max %d\n", min_index, max_index);
1435                         whole = max_index - min_index >= points_in_line;
1436                         min_index = (min_index % points_in_line + points_in_line) % points_in_line;
1437                         max_index = (max_index % points_in_line + points_in_line) % points_in_line;
1438                         // they drew around a shape more than once - what's the start/end point?  does it matter?
1439                         if (whole) min_index = max_index = (min_index + max_index) / 2;
1440                         // printf("processed min %d max %d whole %d\n", min_index, max_index, whole);
1441
1442                         if (direction < 0)
1443                         {
1444                                 if (whole)
1445                                 {
1446                                         // printf("whole (down) (%d) ", min_index);
1447                                         for (int i = min_index; i >= 0; i--)
1448                                         {
1449                                                 // printf("%d ", i);
1450                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1451                                         }
1452                                         for (int i = points_in_line - 1; i >= min_index; i--)
1453                                         {
1454                                                 // printf("%d ", i);
1455                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1456                                         }
1457                                 }
1458                                 else
1459                                 {
1460                                         // printf("part (down) (%d -> %d) ", max_index, min_index);
1461                                         for (int i = max_index; i != min_index; i--)
1462                                         {
1463                                                 if (i == -1) i = points_in_line - 1;
1464                                                 // printf("%d ", i);
1465                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1466                                         }
1467                                         vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, min_index));
1468                                 }
1469                         }
1470                         else
1471                         {
1472                                 if (whole)
1473                                 {
1474                                         // printf("whole (%d) ", min_index);
1475                                         for (int i = min_index; i < points_in_line; i++)
1476                                         {
1477                                                 // printf("%d ", i);
1478                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1479                                         }
1480                                         for (int i = 0; i <= min_index; i++)
1481                                         {
1482                                                 // printf("%d ", i);
1483                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1484                                         }
1485                                 }
1486                                 else
1487                                 {
1488                                         // printf("part (%d -> %d) ", min_index, max_index);
1489                                         for (int i = min_index; i != max_index; i++)
1490                                         {
1491                                                 if (i == points_in_line) i = 0;
1492                                                 // printf("%d ", i);
1493                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1494                                         }
1495                                         vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, max_index));
1496                                 }
1497                         }
1498                         // printf("\n");
1499                         // debug_show_vertex_list(0, vertex_list, "after insert", -1);
1500                         vertex_list.erase(start, iter);
1501                         // debug_show_vertex_list(0, vertex_list, "after delete", -1);
1502                 }
1503
1504                 debug_show_vertex_list(0, vertex_list, "continuous vertices", -1);
1505
1506                 // \todo reenable or delete this section
1507                 int i=100;
1508                 for(bool done=false;!done && i<30;i++)
1509                 {
1510                         debug_show_vertex_list(i, vertex_list, "in big loop", -1);
1511
1512                         // Set done to "true" for now. If
1513                         // any updates are performed, we will
1514                         // change it back to false.
1515                         done=true;
1516
1517                         std::list<synfigapp::ValueDesc>::iterator prev,next;
1518                         prev=vertex_list.end();prev--;  // Set prev to the last ValueDesc
1519                         next=vertex_list.begin();
1520                         iter=next++; // Set iter to the first value desc, and next to the second
1521
1522                         int current = 0;
1523                         for(;iter!=vertex_list.end();prev=iter,iter++,next++,current++)
1524                         {
1525                                 // we need to be able to erase(next) and can't do that if next is end()
1526                                 if (next == vertex_list.end()) next = vertex_list.begin();
1527                                 debug_show_vertex_list(i, vertex_list, "in loop around vertices", current);
1528                                 synfigapp::ValueDesc value_prev(*prev);
1529                                 synfigapp::ValueDesc value_desc(*iter);
1530                                 synfigapp::ValueDesc value_next(*next);
1531
1532                                 assert(value_desc.is_valid());
1533                                 assert(value_next.is_valid());
1534                                 assert(value_prev.is_valid());
1535
1536                                 // synfig::info("-------");
1537                                 // synfig::info(__FILE__":%d: value_prev 0x%08X:%d",__LINE__,value_prev.get_parent_value_node().get(),value_prev.get_index());
1538                                 // synfig::info(__FILE__":%d: value_desc 0x%08X:%d",__LINE__,value_desc.get_parent_value_node().get(),value_desc.get_index());
1539                                 // synfig::info(__FILE__":%d: value_next 0x%08X:%d",__LINE__,value_next.get_parent_value_node().get(),value_next.get_index());
1540
1541                                 /*
1542                                   if(value_prev.parent_is_value_node() && value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1543                                   {
1544                                   // Remove random extraneous vertices
1545                                   if(value_prev.get_parent_value_node()==value_next.get_parent_value_node() &&
1546                                   value_prev.get_parent_value_node()!=value_desc.get_parent_value_node())
1547                                   {
1548                                   vertex_list.erase(iter);
1549                                   done=false;
1550                                   break;
1551                                   }
1552                                   }
1553                                 */
1554
1555                                 // // Remove duplicate vertices
1556
1557                                 // // if previous is the same as current or
1558                                 // //    current is the same as next, remove current
1559                                 // if(value_prev.get_value_node()==value_desc.get_value_node() ||
1560                                 //    value_desc.get_value_node()==value_next.get_value_node())
1561                                 // {
1562                                 //      vertex_list.erase(iter);
1563                                 //      done=false;
1564                                 //      printf("erased node - i = %d\n", i);
1565                                 //      break;
1566                                 // }
1567
1568                                 // // if previous is the same as next, remove previous?  or next?
1569                                 // if(value_prev.get_value_node()==value_next.get_value_node())
1570                                 // {
1571                                 //      vertex_list.erase(next);
1572                                 //      // vertex_list.erase(prev);
1573                                 //      done=false;
1574                                 //      printf("erased node - i = %d\n", i);
1575                                 //      break;
1576                                 // }
1577
1578                                 // if 'this' and 'next' both have parents
1579                                 if (value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1580                                 {
1581                                         // if they are both on the same bline - this has been handled by new code above
1582                                         if (value_desc.get_parent_value_node() == value_next.get_parent_value_node())
1583                                         {
1584                                                 // // if (next != vertex_list.end())
1585                                                 // {
1586                                                 //      printf("parent loop is %d and node loop is ??\n",
1587                                                 //                 (*(value_desc.get_parent_value_node()))(get_time()).get_loop()
1588                                                 //                 // value_desc.get_value_node().get_loop(),
1589                                                 //              );
1590                                                 //
1591                                                 //      // Fill in missing vertices
1592                                                 //      // \todo take loops into account: seeing (15, 2, 3, 4) probably means that (0, 1) is missing, not 14 through 3
1593                                                 //      if(value_desc.get_index()<value_next.get_index()-1)
1594                                                 //      {
1595                                                 //              debug_show_vertex_list(i, vertex_list,
1596                                                 //                                                         strprintf("same parent, different points this %d < next-1 %d",
1597                                                 //                                                                               value_desc.get_index(), ((value_next.get_index()-1))),
1598                                                 //                                                         current);
1599                                                 //              for (int index = value_desc.get_index()+1; index < value_next.get_index(); index++)
1600                                                 //              {
1601                                                 //                      printf("inserting up %d\n", index);
1602                                                 //                      vertex_list.insert(next, synfigapp::ValueDesc(value_desc.get_parent_value_node(), index));
1603                                                 //              }
1604                                                 //              debug_show_vertex_list(i, vertex_list, "new list", current);
1605                                                 //              done=false;
1606                                                 //              break;
1607                                                 //      }
1608                                                 //      if(value_next.get_index()<value_desc.get_index()-1)
1609                                                 //      {
1610                                                 //              debug_show_vertex_list(i, vertex_list,
1611                                                 //                                                         strprintf("same parent, different points next %d < this-1 %d",
1612                                                 //                                                                               value_next.get_index(), ((value_desc.get_index()-1))),
1613                                                 //                                                         current);
1614                                                 //              for (int index = value_desc.get_index()-1; index > value_next.get_index(); index--)
1615                                                 //              {
1616                                                 //                      printf("inserting down %d\n", index);
1617                                                 //                      vertex_list.insert(next, synfigapp::ValueDesc(value_desc.get_parent_value_node(), index));
1618                                                 //              }
1619                                                 //              debug_show_vertex_list(i, vertex_list, "new list", current);
1620                                                 //              done=false;
1621                                                 //              break;
1622                                                 //      }
1623                                                 // }
1624                                         }
1625                                         // 'this' and 'next' have different parents
1626                                         else
1627                                         {
1628                                                 ValueNode::Handle v1 = value_desc.get_value_node();
1629                                                 ValueNode::Handle v2 = value_desc.get_parent_value_node();
1630                                                 if (v1 == v2)
1631                                                         printf("same\n");
1632                                                 else
1633                                                         printf("different\n");
1634
1635                                                 if (value_desc.get_value_node() != value_next.get_value_node())
1636                                                 {
1637                                                         // Ensure that connections between blines are properly connected
1638                                                         BLinePoint vertex(value_desc.get_value(get_time()).get(BLinePoint()));
1639                                                         BLinePoint vertex_next(value_next.get_value(get_time()).get(BLinePoint()));
1640
1641                                                         //synfig::info("--------");
1642                                                         //synfig::info(__FILE__":%d: vertex: [%f, %f]",__LINE__,vertex.get_vertex()[0],vertex.get_vertex()[1]);
1643                                                         //synfig::info(__FILE__":%d: vertex_next: [%f, %f]",__LINE__,vertex_next.get_vertex()[0],vertex_next.get_vertex()[1]);
1644
1645                                                         // if this vertex is close to the next one, replace this vertex with a new one
1646                                                         // and erase the next one
1647                                                         printf("this point is %5.2f from the next point - compare with %5.2f\n",
1648                                                                    (vertex.get_vertex()-vertex_next.get_vertex()).mag_squared(),
1649                                                                    radius*radius);
1650                                                         if((vertex.get_vertex()-vertex_next.get_vertex()).mag_squared()<radius*radius)
1651                                                         {
1652                                                                 printf("in one - it's close\n");
1653                                                                 ValueNode_Composite::Handle value_node;
1654                                                                 ValueNode_Composite::Handle value_node_next;
1655                                                                 value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node().clone());
1656                                                                 value_node_next=ValueNode_Composite::Handle::cast_dynamic(value_next.get_value_node().clone());
1657                                                                 if(!value_node || !value_node_next)
1658                                                                 {
1659                                                                         synfig::info(__FILE__":%d: Unable to properly connect blines.",__LINE__);
1660                                                                         continue;
1661                                                                 }
1662                                                                 // \todo if next isn't split, don't we want to copy its 'Tangent 1' instead?
1663                                                                 value_node->set_link(5,value_node_next->get_link(5)); // Tangent 2
1664                                                                 value_node->set_link(3,ValueNode_Const::create(true)); // Split Tangents
1665
1666                                                                 // get_canvas_interface()->auto_export(value_node);
1667                                                                 printf("exporting\n");
1668                                                                 get_canvas_interface()->add_value_node(value_node,value_node->get_id() + strprintf("foo %d", rand()));
1669
1670                                                                 assert(value_node->is_exported());
1671                                                                 // replace 'this' with the new valuenode
1672                                                                 *iter=synfigapp::ValueDesc(get_canvas(),value_node->get_id());
1673                                                                 printf("erasing next\n");
1674                                                                 printf("erasing next point\n");
1675                                                                 vertex_list.erase(next);
1676                                                                 done=false;
1677                                                                 break;
1678                                                         } // this vertex isn't close to the next one
1679                                                         else if (value_prev.parent_is_value_node())
1680                                                         {
1681                                                                 printf("in two - it's far\n");
1682                                                                 // \todo this only makes sense if prev is on the same bline
1683                                                                 printf("this is index %d\n", value_desc.get_index());
1684                                                                 printf("prev is index %d\n", value_prev.get_index());
1685                                                                 bool positive_trend(value_desc.get_index()>value_prev.get_index());
1686
1687                                                                 if(positive_trend)
1688                                                                 {
1689                                                                         printf("positive trend\n");
1690                                                                         printf("comparing index %d < link_count()-1 = %d-1 = %d\n",
1691                                                                                    value_desc.get_index(),
1692                                                                                    LinkableValueNode::Handle::cast_static(value_desc.get_parent_value_node())->link_count(),
1693                                                                                    LinkableValueNode::Handle::cast_static(value_desc.get_parent_value_node())->link_count()-1);
1694                                                                         if (value_desc.get_index()<LinkableValueNode::Handle::cast_static(value_desc.get_parent_value_node())->link_count()-1)
1695                                                                         {
1696                                                                                 printf("in two - b\n");
1697                                                                                 printf("inserting node with index %d\n", value_desc.get_index()+1);
1698                                                                                 vertex_list.insert(next,
1699                                                                                                                    synfigapp::ValueDesc(value_desc.get_parent_value_node(),
1700                                                                                                                                                                 value_desc.get_index()+1));
1701                                                                                 done=false;
1702                                                                                 break;
1703                                                                         }
1704                                                                 }
1705                                                                 else // !positive_trend
1706                                                                 {
1707                                                                         printf("negative trend\n");
1708                                                                         if(value_desc.get_index()>0)
1709                                                                         {
1710                                                                                 printf("in two - a\n");
1711                                                                                 printf("inserting node on this line with index %d\n",
1712                                                                                            value_desc.get_index()-1);
1713                                                                                 vertex_list.insert(next,
1714                                                                                                                    synfigapp::ValueDesc(value_desc.get_parent_value_node(),
1715                                                                                                                                                                 value_desc.get_index()-1));
1716                                                                                 done=false;
1717                                                                                 break;
1718                                                                         }
1719                                                                 }
1720                                                         }
1721                                                 }
1722                                         }
1723                                 }
1724                         }
1725                 }
1726
1727                 if(vertex_list.size()<=2)
1728                 {
1729                         synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1730                         return Smach::RESULT_OK;
1731                 }
1732
1733                 debug_show_vertex_list(i, vertex_list, "finished tidying list", -1);
1734         }
1735
1736         // If we aren't the trivial case,
1737         // then go ahead and create the new
1738         // BLine value node
1739         if(!value_node_bline)
1740         {
1741                 synfig::info("not all points are on the same bline");
1742                 value_node_bline=ValueNode_BLine::create();
1743
1744                 std::list<synfigapp::ValueDesc>::iterator iter;
1745                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1746                 {
1747                         // Ensure that the vertex is exported.
1748                         get_canvas_interface()->auto_export(*iter);
1749
1750                         value_node_bline->add(iter->get_value_node());
1751                         //value_node_bline->add(ValueNode_BLine::ListEntry(iter->get_value_node()));
1752                 }
1753
1754                 value_node_bline->set_loop(true);
1755         }
1756
1757         get_canvas_interface()->auto_export(value_node_bline);
1758
1759         // Now we create the region layer
1760         // Create the layer
1761         {
1762                 Layer::Handle layer;
1763                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
1764                 int depth(0);
1765
1766                 // we are temporarily using the layer to hold something
1767                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1768                 if(layer)
1769                 {
1770                         depth=layer->get_depth();
1771                         canvas=layer->get_canvas();
1772                 }
1773
1774                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1775
1776                 layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
1777                 assert(layer);
1778                 layer->set_param("color",synfigapp::Main::get_background_color());
1779                 if(get_feather())
1780                 {
1781                         layer->set_param("feather",get_feather());
1782                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
1783                 }
1784                 get_canvas_interface()->signal_layer_param_changed()(layer,"color");
1785
1786                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1787
1788                 assert(action);
1789
1790                 action->set_param("canvas",get_canvas());
1791                 action->set_param("canvas_interface",get_canvas_interface());
1792                 action->set_param("layer",layer);
1793                 if(!action->set_param("param",String("bline")))
1794                         synfig::error("LayerParamConnect didn't like \"param\"");
1795                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
1796                         synfig::error("LayerParamConnect didn't like \"value_node\"");
1797
1798                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1799                 {
1800                         get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1801                         group.cancel();
1802                         return Smach::RESULT_ERROR;
1803                 }
1804                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1805         }
1806
1807         return Smach::RESULT_ACCEPT;
1808 }
1809
1810 void
1811 StateDraw_Context::refresh_ducks()
1812 {
1813         get_canvas_view()->queue_rebuild_ducks();
1814 /*
1815         get_work_area()->clear_ducks();
1816
1817
1818         std::list< etl::smart_ptr<std::list<synfig::Point> > >::iterator iter;
1819
1820         for(iter=stroke_list.begin();iter!=stroke_list.end();++iter)
1821         {
1822                 get_work_area()->add_stroke(*iter);
1823         }
1824
1825         get_work_area()->queue_draw();
1826 */
1827 }
1828
1829
1830 Smach::event_result
1831 StateDraw_Context::extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1832 {
1833         // Create the action group
1834         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1835
1836         if (complete_loop)
1837         {
1838                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_loop"));
1839                 assert(action);
1840
1841                 action->set_param("canvas",get_canvas());
1842                 action->set_param("canvas_interface",get_canvas_interface());
1843                 action->set_param("value_node",ValueNode::Handle(value_node));
1844
1845                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1846                 {
1847                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1848                         group.cancel();
1849                         return Smach::RESULT_ERROR;
1850                 }
1851         }
1852
1853         std::list<synfig::BLinePoint>::reverse_iterator iter;
1854         for(iter=bline.rbegin();!(iter==bline.rend());++iter)
1855         {
1856                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1857
1858                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1859
1860                 assert(action);
1861                 synfigapp::ValueDesc value_desc(value_node,0);
1862
1863                 action->set_param("canvas",get_canvas());
1864                 action->set_param("canvas_interface",get_canvas_interface());
1865                 action->set_param("value_desc",value_desc);
1866                 if(!action->set_param("item",ValueNode::Handle(composite)))
1867                         synfig::error("ACTION didn't like \"item\"");
1868
1869                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1870                 {
1871                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1872                         group.cancel();
1873                         //refresh_ducks();
1874                         return Smach::RESULT_ERROR;
1875                 }
1876         }
1877         last_stroke=value_node;
1878         return Smach::RESULT_ACCEPT;
1879 }
1880
1881 Smach::event_result
1882 StateDraw_Context::extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1883 {
1884         // Create the action group
1885         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1886
1887         if (complete_loop)
1888         {
1889                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_loop"));
1890                 assert(action);
1891
1892                 action->set_param("canvas",get_canvas());
1893                 action->set_param("canvas_interface",get_canvas_interface());
1894                 action->set_param("value_node",ValueNode::Handle(value_node));
1895
1896                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1897                 {
1898                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1899                         group.cancel();
1900                         return Smach::RESULT_ERROR;
1901                 }
1902         }
1903
1904         std::list<synfig::BLinePoint>::iterator iter;
1905         for(iter=bline.begin();iter!=bline.end();++iter)
1906         {
1907                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1908
1909                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1910
1911                 assert(action);
1912                 synfigapp::ValueDesc value_desc(value_node,value_node->link_count());
1913
1914                 action->set_param("canvas",get_canvas());
1915                 action->set_param("canvas_interface",get_canvas_interface());
1916                 action->set_param("value_desc",value_desc);
1917                 if(!action->set_param("item",ValueNode::Handle(composite)))
1918                         synfig::error("ACTION didn't like \"item\"");
1919
1920                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1921                 {
1922                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1923                         group.cancel();
1924                         //refresh_ducks();
1925                         return Smach::RESULT_ERROR;
1926                 }
1927         }
1928         last_stroke=value_node;
1929         return Smach::RESULT_ACCEPT;
1930 }
1931
1932 void
1933 StateDraw_Context::reverse_bline(std::list<synfig::BLinePoint> &bline)
1934 {
1935         int i;
1936
1937         std::list<synfig::BLinePoint>::iterator iter,eiter;
1938         iter=bline.begin();
1939         eiter=bline.end();
1940         eiter--;
1941         for(i=0;i<(int)bline.size()/2;++iter,--eiter,i++)
1942         {
1943                 iter_swap(iter,eiter);
1944                 iter->reverse();
1945                 eiter->reverse();
1946         }
1947 }
1948
1949 void
1950 StateDraw_Context::fill_last_stroke_and_unselect_other_layers()
1951 {
1952         if(!last_stroke)
1953                 return;
1954
1955         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Fill Stroke"));
1956
1957         Layer::Handle layer;
1958
1959         get_canvas_interface()->auto_export(last_stroke);
1960
1961         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1962
1963         Canvas::Handle canvas(get_canvas_view()->get_canvas());
1964         int depth(0);
1965
1966         layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1967         if(layer)
1968         {
1969                 depth=layer->get_depth();
1970                 canvas=layer->get_canvas();
1971         }
1972
1973         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
1974         layer=get_canvas_interface()->add_layer_to("region", canvas, depth);
1975         assert(layer);
1976         layer->set_param("color",synfigapp::Main::get_background_color());
1977         layer->set_description(last_stroke_id + _(" Region"));
1978
1979         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1980
1981         assert(action);
1982
1983         action->set_param("canvas",get_canvas());
1984         action->set_param("canvas_interface",get_canvas_interface());
1985         action->set_param("layer",layer);
1986         if(!action->set_param("param",String("bline")))
1987                 synfig::error("LayerParamConnect didn't like \"param\"");
1988         if(!action->set_param("value_node",ValueNode::Handle(last_stroke)))
1989                 synfig::error("LayerParamConnect didn't like \"value_node\"");
1990
1991         if(!get_canvas_interface()->get_instance()->perform_action(action))
1992         {
1993                 get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1994                 group.cancel();
1995                 return;
1996         }
1997         get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1998 }
1999
2000 void
2001 StateDraw_Context::fill_last_stroke()
2002 {
2003         if(!last_stroke)
2004                 return;
2005
2006         synfigapp::SelectionManager::LayerList layer_list = get_canvas_view()->get_selection_manager()->get_selected_layers();
2007         fill_last_stroke_and_unselect_other_layers();
2008         get_canvas_view()->get_selection_manager()->set_selected_layers(layer_list);
2009 }