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

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