synfig-studio/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 **      Copyright (c) 2009 Nikita Kitaev
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33
  34 #include <gtkmm/dialog.h>
  35 #include <gtkmm/entry.h>
  36
  37 #include <synfig/valuenode_dynamiclist.h>
  38
  39 #include "state_draw.h"
  40 #include "state_stroke.h"
  41 #include "canvasview.h"
  42 #include "workarea.h"
  43 #include "app.h"
  44 #include <synfig/valuenode_bline.h>
  45 #include <synfig/valuenode_composite.h>
  46 #include <ETL/hermite>
  47 #include <ETL/calculus>
  48 #include <utility>
  49 #include "event_mouse.h"
  50 #include "event_layerclick.h"
  51 #include "toolbox.h"
  52
  53 #include <synfigapp/blineconvert.h>
  54 #include <synfigapp/main.h>
  55
  56 #include <ETL/gaussian>
  57 #include "dialog_tooloptions.h"
  58
  59 #include <gtkmm/table.h>
  60 #include <gtkmm/label.h>
  61 #include <gtkmm/button.h>
  62 #include <gtkmm/checkbutton.h>
  63 #include <gtkmm/scale.h>
  64 #include <sigc++/connection.h>
  65
  66 #include "general.h"
  67
  68 #endif
  69
  70 /* === U S I N G =========================================================== */
  71
  72 using namespace std;
  73 using namespace etl;
  74 using namespace synfig;
  75 using namespace studio;
  76
  77 /* === M A C R O S ========================================================= */
  78
  79 /* === G L O B A L S ======================================================= */
  80
  81 StateDraw studio::state_draw;
  82
  83 /* === C L A S S E S & S T R U C T S ======================================= */
  84
  85 class studio::StateDraw_Context : public sigc::trackable
  86 {
  87         typedef etl::smart_ptr<std::list<synfig::Point> > StrokeData;
  88         typedef etl::smart_ptr<std::list<synfig::Real> > WidthData;
  89
  90         typedef list< pair<StrokeData,WidthData> > StrokeQueue;
  91
  92         StrokeQueue stroke_queue;
  93
  94
  95         etl::handle<CanvasView> canvas_view_;
  96         CanvasView::IsWorking is_working;
  97
  98         bool prev_table_status;
  99         bool loop_;
 100         bool prev_workarea_layer_status_;
 101
 102         int nested;
 103         sigc::connection process_queue_connection;
 104
 105         ValueNode_BLine::Handle last_stroke;
 106         synfig::String last_stroke_id;
 107
 108         Gtk::Menu menu;
 109
 110         //Duckmatic::Push duckmatic_push;
 111
 112         std::list< etl::smart_ptr<std::list<synfig::Point> > > stroke_list;
 113
 114         void refresh_ducks();
 115
 116         Duckmatic::Type old_duckmask;
 117
 118         void fill_last_stroke();
 119         Smach::event_result fill_last_stroke_and_unselect_other_layers();
 120
 121         Smach::event_result new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius);
 122
 123         Smach::event_result new_region(std::list<synfig::BLinePoint> bline,synfig::Real radius);
 124
 125         Smach::event_result extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop);
 126         Smach::event_result extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop);
 127         void reverse_bline(std::list<synfig::BLinePoint> &bline);
 128
 129         synfigapp::Settings& settings;
 130
 131         Gtk::Table options_table;
 132         Gtk::Entry entry_id;
 133         Gtk::CheckButton checkbutton_pressure_width;
 134         Gtk::CheckButton checkbutton_round_ends;
 135         Gtk::CheckButton checkbutton_auto_loop;   // whether to loop new strokes which start and end in the same place
 136         Gtk::CheckButton checkbutton_auto_extend; // whether to extend existing lines
 137         Gtk::CheckButton checkbutton_auto_link;   // whether to link new ducks to existing ducks
 138         Gtk::CheckButton checkbutton_region;      // whether to create regions
 139         Gtk::CheckButton checkbutton_outline;     // whether to create outlines
 140         Gtk::CheckButton checkbutton_auto_export;
 141         Gtk::Button button_fill_last_stroke;
 142
 143         //pressure spinner and such
 144         Gtk::Adjustment  adj_min_pressure;
 145         Gtk::SpinButton  spin_min_pressure;
 146         Gtk::CheckButton check_min_pressure;
 147
 148         Gtk::Adjustment  adj_feather;
 149         Gtk::SpinButton  spin_feather;
 150
 151         Gtk::Adjustment  adj_globalthres;
 152         Gtk::SpinButton  spin_globalthres;
 153
 154         Gtk::Adjustment  adj_localthres;
 155         Gtk::CheckButton check_localerror;
 156         void UpdateErrorBox();  //switches the stuff if need be :)
 157
 158         //Added by Adrian - data drive HOOOOO
 159         synfigapp::BLineConverter blineconv;
 160
 161 public:
 162         synfig::String get_id()const { return entry_id.get_text(); }
 163         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 164
 165         bool get_pressure_width_flag()const { return checkbutton_pressure_width.get_active(); }
 166         void set_pressure_width_flag(bool x) { return checkbutton_pressure_width.set_active(x); }
 167
 168         bool get_auto_loop_flag()const { return checkbutton_auto_loop.get_active(); }
 169         void set_auto_loop_flag(bool x) { return checkbutton_auto_loop.set_active(x); }
 170
 171         bool get_auto_extend_flag()const { return checkbutton_auto_extend.get_active(); }
 172         void set_auto_extend_flag(bool x) { return checkbutton_auto_extend.set_active(x); }
 173
 174         bool get_auto_link_flag()const { return checkbutton_auto_link.get_active(); }
 175         void set_auto_link_flag(bool x) { return checkbutton_auto_link.set_active(x); }
 176
 177         bool get_region_flag()const { return checkbutton_region.get_active(); }
 178         void set_region_flag(bool x) { return checkbutton_region.set_active(x); }
 179
 180         bool get_outline_flag()const { return checkbutton_outline.get_active(); }
 181         void set_outline_flag(bool x) { return checkbutton_outline.set_active(x); }
 182
 183         bool get_auto_export_flag()const { return checkbutton_auto_export.get_active(); }
 184         void set_auto_export_flag(bool x) { return checkbutton_auto_export.set_active(x); }
 185
 186         Real get_min_pressure() const { return adj_min_pressure.get_value(); }
 187         void set_min_pressure(Real x) { return adj_min_pressure.set_value(x); }
 188
 189         Real get_feather() const { return adj_feather.get_value(); }
 190         void set_feather(Real x) { return adj_feather.set_value(x); }
 191
 192         Real get_gthres() const { return adj_globalthres.get_value(); }
 193         void set_gthres(Real x) { return adj_globalthres.set_value(x); }
 194
 195         Real get_lthres() const { return adj_localthres.get_value(); }
 196         void set_lthres(Real x) { return adj_localthres.set_value(x); }
 197
 198         bool get_local_error_flag() const { return check_localerror.get_active(); }
 199         void set_local_error_flag(bool x) { check_localerror.set_active(x); }
 200
 201         bool get_min_pressure_flag()const { return check_min_pressure.get_active(); }
 202         void set_min_pressure_flag(bool x) { check_min_pressure.set_active(x); }
 203
 204         void load_settings();
 205         void save_settings();
 206         void increment_id();
 207
 208         Smach::event_result event_stop_handler(const Smach::event& x);
 209
 210         Smach::event_result event_refresh_handler(const Smach::event& x);
 211
 212         Smach::event_result event_mouse_down_handler(const Smach::event& x);
 213
 214         Smach::event_result event_stroke(const Smach::event& x);
 215         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 216         void refresh_tool_options();
 217
 218         Smach::event_result process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag=false);
 219
 220         bool process_queue();
 221
 222
 223         StateDraw_Context(CanvasView* canvas_view);
 224
 225         ~StateDraw_Context();
 226
 227         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 228         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 229         synfig::Time get_time()const { return get_canvas_interface()->get_time(); }
 230         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 231         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 232
 233         //void on_user_click(synfig::Point point);
 234
 235 //      bool run();
 236 };      // END of class StateDraw_Context
 237
 238
 239 /* === M E T H O D S ======================================================= */
 240
 241 StateDraw::StateDraw():
 242         Smach::state<StateDraw_Context>("draw")
 243 {
 244         insert(event_def(EVENT_STOP,&StateDraw_Context::event_stop_handler));
 245         insert(event_def(EVENT_REFRESH,&StateDraw_Context::event_refresh_handler));
 246         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateDraw_Context::event_mouse_down_handler));
 247         insert(event_def(EVENT_WORKAREA_STROKE,&StateDraw_Context::event_stroke));
 248         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateDraw_Context::event_refresh_tool_options));
 249 }
 250
 251 StateDraw::~StateDraw()
 252 {
 253 }
 254
 255
 256 void
 257 StateDraw_Context::load_settings()
 258 {
 259         String value;
 260
 261         if(settings.get_value("draw.id",value))
 262                 set_id(value);
 263         else
 264                 set_id("NewDrawing");
 265
 266         if(settings.get_value("draw.pressure_width",value) && value=="0")
 267                 set_pressure_width_flag(false);
 268         else
 269                 set_pressure_width_flag(true);
 270
 271         if(settings.get_value("draw.auto_loop",value) && value=="0")
 272                 set_auto_loop_flag(false);
 273         else
 274                 set_auto_loop_flag(true);
 275
 276         if(settings.get_value("draw.auto_extend",value) && value=="0")
 277                 set_auto_extend_flag(false);
 278         else
 279                 set_auto_extend_flag(true);
 280
 281         if(settings.get_value("draw.auto_link",value) && value=="0")
 282                 set_auto_link_flag(false);
 283         else
 284                 set_auto_link_flag(true);
 285
 286         if(settings.get_value("draw.region",value) && value=="0")
 287                 set_region_flag(false);
 288         else
 289                 set_region_flag(true);
 290
 291         if(settings.get_value("draw.outline",value) && value=="0")
 292                 set_outline_flag(false);
 293         else
 294                 set_outline_flag(true);
 295
 296         if(settings.get_value("draw.auto_export",value) && value=="1")
 297                 set_auto_export_flag(true);
 298         else
 299                 set_auto_export_flag(false);
 300
 301         if(settings.get_value("draw.min_pressure_on",value) && value=="0")
 302                 set_min_pressure_flag(false);
 303         else
 304                 set_min_pressure_flag(true);
 305
 306         if(settings.get_value("draw.min_pressure",value))
 307         {
 308                 Real n = atof(value.c_str());
 309                 set_min_pressure(n);
 310         }else
 311                 set_min_pressure(0);
 312
 313         if(settings.get_value("draw.feather",value))
 314         {
 315                 Real n = atof(value.c_str());
 316                 set_feather(n);
 317         }else
 318                 set_feather(0);
 319
 320         if(settings.get_value("draw.gthreshold",value))
 321         {
 322                 Real n = atof(value.c_str());
 323                 set_gthres(n);
 324         }
 325
 326         if(settings.get_value("draw.lthreshold",value))
 327         {
 328                 Real n = atof(value.c_str());
 329                 set_lthres(n);
 330         }
 331
 332         if(settings.get_value("draw.localize",value) && value == "1")
 333                 set_local_error_flag(true);
 334         else
 335                 set_local_error_flag(false);
 336 }
 337
 338 void
 339 StateDraw_Context::save_settings()
 340 {
 341         settings.set_value("draw.id",get_id().c_str());
 342         settings.set_value("draw.pressure_width",get_pressure_width_flag()?"1":"0");
 343         settings.set_value("draw.auto_loop",get_auto_loop_flag()?"1":"0");
 344         settings.set_value("draw.auto_extend",get_auto_extend_flag()?"1":"0");
 345         settings.set_value("draw.auto_link",get_auto_link_flag()?"1":"0");
 346         settings.set_value("draw.region",get_region_flag()?"1":"0");
 347         settings.set_value("draw.outline",get_outline_flag()?"1":"0");
 348         settings.set_value("draw.auto_export",get_auto_export_flag()?"1":"0");
 349         settings.set_value("draw.min_pressure",strprintf("%f",get_min_pressure()));
 350         settings.set_value("draw.feather",strprintf("%f",get_feather()));
 351         settings.set_value("draw.min_pressure_on",get_min_pressure_flag()?"1":"0");
 352         settings.set_value("draw.gthreshold",strprintf("%f",get_gthres()));
 353         settings.set_value("draw.lthreshold",strprintf("%f",get_lthres()));
 354         settings.set_value("draw.localize",get_local_error_flag()?"1":"0");
 355 }
 356
 357 void
 358 StateDraw_Context::increment_id()
 359 {
 360         String id(get_id());
 361         int number=1;
 362         int digits=0;
 363
 364         if(id.empty())
 365                 id="Drawing";
 366
 367         // If there is a number
 368         // already at the end of the
 369         // id, then remove it.
 370         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 371         {
 372                 // figure out how many digits it is
 373                 for (digits = 0;
 374                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 375                          digits++)
 376                         ;
 377
 378                 String str_number;
 379                 str_number=String(id,id.size()-digits,id.size());
 380                 id=String(id,0,id.size()-digits);
 381                 // synfig::info("---------------- \"%s\"",str_number.c_str());
 382
 383                 number=atoi(str_number.c_str());
 384         }
 385         else
 386         {
 387                 number=1;
 388                 digits=3;
 389         }
 390
 391         number++;
 392
 393         // Add the number back onto the id
 394         {
 395                 const String format(strprintf("%%0%dd",digits));
 396                 id+=strprintf(format.c_str(),number);
 397         }
 398
 399         // Set the ID
 400         set_id(id);
 401 }
 402
 403 StateDraw_Context::StateDraw_Context(CanvasView* canvas_view):
 404         canvas_view_(canvas_view),
 405         is_working(*canvas_view),
 406         loop_(false),
 407         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 408         settings(synfigapp::Main::get_selected_input_device()->settings()),
 409         entry_id(),
 410         checkbutton_pressure_width(_("Pressure Width")),
 411         checkbutton_auto_loop(_("Auto Loop")),
 412         checkbutton_auto_extend(_("Auto Extend")),
 413         checkbutton_auto_link(_("Auto Link")),
 414         checkbutton_region(_("Create Region BLine")),
 415         checkbutton_outline(_("Create Outline BLine")),
 416         checkbutton_auto_export(_("Auto Export")),
 417         button_fill_last_stroke(_("Fill Last Stroke")),
 418         adj_min_pressure(0,0,1,0.01,0.1),
 419         spin_min_pressure(adj_min_pressure,0.1,3),
 420         check_min_pressure(_("Min Pressure")),
 421         adj_feather(0,0,10000,0.01,0.1),
 422         spin_feather(adj_feather,0.01,4),
 423         adj_globalthres(.70f,0.01,10000,0.01,0.1),
 424         spin_globalthres(adj_globalthres,0.01,3),
 425         adj_localthres(20,1,100000,0.1,1),
 426         check_localerror(_("LocalError"))
 427
 428 {
 429         nested=0;
 430         load_settings();
 431
 432         UpdateErrorBox();
 433
 434         options_table.attach(*manage(new Gtk::Label(_("Draw Tool"))),   0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 435         options_table.attach(entry_id,                                                                  0, 2,  1,  2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 436         options_table.attach(checkbutton_outline,                                               0, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 437         options_table.attach(checkbutton_region,                                                0, 2,  3,  4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 438         options_table.attach(checkbutton_auto_loop,                                             0, 2,  4,  5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 439         options_table.attach(checkbutton_auto_extend,                                   0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 440         options_table.attach(checkbutton_auto_link,                                             0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 441         options_table.attach(checkbutton_auto_export,                                   0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 442         options_table.attach(checkbutton_pressure_width,                                0, 2,  8,  9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 443         options_table.attach(check_localerror,                                                  0, 2,  9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 444
 445         options_table.attach(check_min_pressure,                                                0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 446         options_table.attach(spin_min_pressure,                                                 1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 447
 448         options_table.attach(*manage(new Gtk::Label(_("Smooth"))),              0, 1, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 449         options_table.attach(spin_globalthres,                                                  1, 2, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 450
 451         options_table.attach(*manage(new Gtk::Label(_("Feather"))),     0, 1, 12, 13, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 452         options_table.attach(spin_feather,                                                              1, 2, 12, 13, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 453
 454         //options_table.attach(button_fill_last_stroke, 0, 2, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 455
 456         button_fill_last_stroke.signal_pressed().connect(sigc::mem_fun(*this,&StateDraw_Context::fill_last_stroke));
 457         check_localerror.signal_toggled().connect(sigc::mem_fun(*this,&StateDraw_Context::UpdateErrorBox));
 458
 459         options_table.show_all();
 460         refresh_tool_options();
 461         //App::dialog_tool_options->set_widget(options_table);
 462         App::dialog_tool_options->present();
 463
 464
 465         old_duckmask=get_work_area()->get_type_mask();
 466         get_work_area()->set_type_mask(Duck::TYPE_ALL-Duck::TYPE_TANGENT-Duck::TYPE_WIDTH);
 467
 468         // Turn off layer clicking
 469         get_work_area()->set_allow_layer_clicks(false);
 470
 471         // Turn off duck clicking
 472         get_work_area()->set_allow_duck_clicks(false);
 473
 474         // clear out the ducks
 475         //get_work_area()->clear_ducks();
 476
 477         // Refresh the work area
 478         //get_work_area()->queue_draw();
 479
 480         // Hide the tables if they are showing
 481         prev_table_status=get_canvas_view()->tables_are_visible();
 482         //if(prev_table_status)get_canvas_view()->hide_tables();
 483
 484         // Disable the time bar
 485         get_canvas_view()->set_sensitive_timebar(false);
 486
 487         // Connect a signal
 488         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateDraw_Context::on_user_click));
 489
 490         get_canvas_view()->work_area->set_cursor(Gdk::PENCIL);
 491
 492         App::toolbox->refresh();
 493
 494         refresh_ducks();
 495 }
 496
 497
 498 void StateDraw_Context::UpdateErrorBox()
 499 {
 500         if(get_local_error_flag())
 501         {
 502                 spin_globalthres.set_adjustment(adj_localthres);
 503                 spin_globalthres.set_value(adj_localthres.get_value());
 504                 spin_globalthres.set_increments(0.1,1);
 505         }else
 506         {
 507                 spin_globalthres.set_adjustment(adj_globalthres);
 508                 spin_globalthres.set_value(adj_globalthres.get_value());
 509                 spin_globalthres.set_increments(0.01,.1);
 510         }
 511
 512         spin_globalthres.update();
 513 }
 514
 515 void
 516 StateDraw_Context::refresh_tool_options()
 517 {
 518         App::dialog_tool_options->clear();
 519         App::dialog_tool_options->set_widget(options_table);
 520         App::dialog_tool_options->set_local_name(_("Draw Tool"));
 521         App::dialog_tool_options->set_name("draw");
 522
 523         App::dialog_tool_options->add_button(
 524                 Gtk::StockID("synfig-fill"),
 525                 _("Fill Last Stroke")
 526         )->signal_clicked().connect(
 527                 sigc::mem_fun(
 528                         *this,
 529                         &StateDraw_Context::fill_last_stroke));
 530 }
 531
 532 Smach::event_result
 533 StateDraw_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 534 {
 535         refresh_tool_options();
 536         return Smach::RESULT_ACCEPT;
 537 }
 538
 539 StateDraw_Context::~StateDraw_Context()
 540 {
 541         save_settings();
 542
 543         App::dialog_tool_options->clear();
 544
 545         get_work_area()->set_type_mask(old_duckmask);
 546
 547         get_canvas_view()->work_area->reset_cursor();
 548
 549         // Restore layer clicking
 550         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 551
 552         // Restore duck clicking
 553         get_work_area()->set_allow_duck_clicks(true);
 554
 555         // Enable the time bar
 556         get_canvas_view()->set_sensitive_timebar(true);
 557
 558         // Bring back the tables if they were out before
 559         if(prev_table_status)get_canvas_view()->show_tables();
 560
 561         // Refresh the work area
 562         get_work_area()->queue_draw();
 563
 564         App::toolbox->refresh();
 565 }
 566
 567 Smach::event_result
 568 StateDraw_Context::event_stop_handler(const Smach::event& /*x*/)
 569 {
 570         throw Smach::egress_exception();
 571 }
 572
 573 Smach::event_result
 574 StateDraw_Context::event_refresh_handler(const Smach::event& /*x*/)
 575 {
 576         refresh_ducks();
 577         return Smach::RESULT_ACCEPT;
 578 }
 579
 580 Smach::event_result
 581 StateDraw_Context::event_mouse_down_handler(const Smach::event& x)
 582 {
 583         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 584         switch(event.button)
 585         {
 586         case BUTTON_LEFT:
 587                 {
 588                         // Enter the stroke state to get the stroke
 589                         get_canvas_view()->get_smach().push_state(&state_stroke);
 590                         return Smach::RESULT_ACCEPT;
 591                 }
 592
 593         default:
 594                 return Smach::RESULT_OK;
 595         }
 596 }
 597
 598 #define SIMILAR_TANGENT_THRESHOLD       (0.2)
 599
 600 struct debugclass
 601 {
 602         synfig::String x;
 603         debugclass(const synfig::String &x):x(x)
 604         {
 605 //              synfig::warning(">>>>>>>>>>>>>>>>>>> "+x);
 606         }
 607         ~debugclass()
 608         {
 609 //              synfig::warning("<<<<<<<<<<<<<<<<<<< "+x);
 610         }
 611 };
 612
 613 struct DepthCounter
 614 {
 615         int &i;
 616         DepthCounter(int &i):i(i) { i++; }
 617         ~DepthCounter() { i--; }
 618 };
 619
 620 Smach::event_result
 621 StateDraw_Context::event_stroke(const Smach::event& x)
 622 {
 623 //      debugclass debugger("StateDraw_Context::event_stroke(const Smach::event& x)");
 624
 625         const EventStroke& event(*reinterpret_cast<const EventStroke*>(&x));
 626
 627         assert(event.stroke_data);
 628
 629         get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_outline_color());
 630
 631         if(nested==0)
 632         {
 633                 DirtyTrap dirty_trap(get_work_area());
 634                 Smach::event_result result;
 635                 result=process_stroke(event.stroke_data,event.width_data,event.modifier&Gdk::CONTROL_MASK || event.modifier&Gdk::BUTTON2_MASK);
 636                 process_queue();
 637                 return result;
 638         }
 639
 640         stroke_queue.push_back(pair<StrokeData,WidthData>(event.stroke_data,event.width_data));
 641
 642         return Smach::RESULT_ACCEPT;
 643 }
 644
 645 bool
 646 StateDraw_Context::process_queue()
 647 {
 648 //      debugclass debugger("StateDraw_Context::process_queue()");
 649         if(nested)
 650                 return true;
 651         DepthCounter depth_counter(nested);
 652         while(!stroke_queue.empty())
 653         {
 654                 pair<StrokeData,WidthData> front(stroke_queue.front());
 655                 process_stroke(front.first,front.second);
 656                 stroke_queue.pop_front();
 657         }
 658         return false;
 659 }
 660
 661 Smach::event_result
 662 StateDraw_Context::process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag)
 663 {
 664 //      debugclass debugger("StateDraw_Context::process_stroke");
 665         DepthCounter depth_counter(nested);
 666
 667         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);
 668
 669
 670         // If we aren't using pressure width,
 671         // then set all the width to 1
 672         if(!get_pressure_width_flag())
 673         {
 674                 std::list<synfig::Real>::iterator iter;
 675                 for(iter=width_data->begin();iter!=width_data->end();++iter)
 676                 {
 677                         *iter=1.0;
 678                 }
 679         }
 680
 681         //get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_outline_color());
 682         //stroke_list.push_back(event.stroke_data);
 683         //refresh_ducks();
 684
 685         std::list<synfig::BLinePoint> bline;
 686         bool loop_bline_flag(false);
 687
 688         //Changed by Adrian - use resident class :)
 689         //synfigapp::convert_stroke_to_bline(bline, *event.stroke_data,*event.width_data, synfigapp::Main::get_bline_width());
 690         blineconv.width = synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc());
 691
 692         if(get_local_error_flag())
 693         {
 694                 float pw = get_work_area()->get_pw();
 695                 float ph = get_work_area()->get_ph();
 696
 697                 blineconv.pixelwidth = sqrt(pw*pw+ph*ph);
 698                 blineconv.smoothness = get_lthres();
 699         }else
 700         {
 701                 blineconv.pixelwidth = 1;
 702                 blineconv.smoothness = get_gthres();
 703         }
 704
 705         blineconv(bline,*stroke_data,*width_data);
 706
 707         //Postprocess to require minimum pressure
 708         if(get_min_pressure_flag())
 709         {
 710                 synfigapp::BLineConverter::EnforceMinWidth(bline,get_min_pressure());
 711         }
 712
 713         // If the start and end points are similar, then make them the same point
 714         if (get_auto_loop_flag() &&
 715                 bline.size() > 2 &&
 716                 (bline.front().get_vertex() - bline.back().get_vertex()).mag() <= radius)
 717         {
 718                 loop_bline_flag=true;
 719                 Vector tangent;
 720                 Real width(0);
 721
 722                 while (bline.size() > 2 &&
 723                            (bline.front().get_vertex() - bline.back().get_vertex()).mag() <= radius)
 724                 {
 725                         tangent=bline.back().get_tangent1();
 726                         width=bline.back().get_width();
 727                         bline.pop_back();
 728                 }
 729
 730                 if(abs(bline.front().get_tangent1().norm()*tangent.norm().perp())>SIMILAR_TANGENT_THRESHOLD)
 731                 {
 732                         // If the tangents are not similar, then
 733                         // split the tangents
 734                         bline.front().set_split_tangent_flag(true);
 735                         bline.front().set_tangent1(tangent);
 736                 }
 737                 else
 738                 {
 739                         // If the tangents are similar, then set the tangent
 740                         // to the average of the two
 741                         bline.front().set_tangent((tangent+bline.front().get_tangent1())*0.5f);
 742                 }
 743
 744                 // Add the widths of the two points
 745                 {
 746                         Real tmp_width(bline.front().get_width()+width);
 747                         tmp_width=tmp_width<=1?tmp_width:1;
 748                         bline.front().set_width(tmp_width);
 749                 }
 750         }
 751
 752         // If the bline only has one blinepoint, then there is nothing to do.
 753         if(bline.size() < 2)
 754         {
 755                 // hide the 'stroke' line we were drawing, unless the user
 756                 // explicitly requests that they are kept
 757                 if (!getenv("SYNFIG_KEEP_ABORTED_DRAW_LINES"))
 758                         refresh_ducks();
 759
 760                 return Smach::RESULT_OK;
 761         }
 762
 763         if(region_flag)
 764                 return new_region(bline,radius);
 765
 766         return new_bline(bline,loop_bline_flag,radius);
 767 }
 768
 769 Smach::event_result
 770 StateDraw_Context::new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius)
 771 {
 772         synfigapp::SelectionManager::LayerList layer_list = get_canvas_view()->get_selection_manager()->get_selected_layers();
 773
 774         // Create the action group
 775         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Sketch BLine"));
 776
 777         bool shift_origin = false;
 778         Vector shift_origin_vector;
 779         bool join_start_no_extend=false,join_finish_no_extend=false;
 780         synfigapp::ValueDesc start_duck_value_desc,finish_duck_value_desc;
 781         bool extend_start=false,extend_finish=false,complete_loop=false;
 782         bool extend_start_join_same=false,extend_start_join_different=false;
 783         bool extend_finish_join_same=false,extend_finish_join_different=false;
 784         int start_duck_index = 0,finish_duck_index = 0; // initialized to keep the compiler happy; shouldn't be needed though
 785         ValueNode_BLine::Handle start_duck_value_node_bline=NULL,finish_duck_value_node_bline=NULL;
 786
 787         // Find any ducks at the start or end that we might attach to
 788         // (this used to only run if we didn't just draw a loop - ie. !loop_bline_flag
 789         // but having loops auto-connect can be useful as well)
 790         if(get_auto_extend_flag() || get_auto_link_flag())
 791         {
 792                 etl::handle<Duck> start_duck(get_work_area()->find_duck(bline.front().get_vertex(),radius,Duck::TYPE_VERTEX));
 793                 etl::handle<Duck> finish_duck(get_work_area()->find_duck(bline.back().get_vertex(),radius,Duck::TYPE_VERTEX));
 794
 795                 // check whether the start of the new line extends an
 796                 // existing line.  this is only the case if the new
 797                 // line isn't a self-contained loop, and if the new
 798                 // line starts at one of the ends of an existing line
 799                 if(start_duck)do
 800                 {
 801                         if(!(start_duck_value_desc=start_duck->get_value_desc()))break;
 802                         if(loop_bline_flag)break; // loops don't extend anything
 803                         if(!start_duck_value_desc.parent_is_value_node())break;
 804                         start_duck_index=start_duck_value_desc.get_index(); // which point on the line did we start drawing at
 805                         start_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(start_duck_value_desc.get_parent_value_node());
 806                         if(!get_auto_extend_flag())break;
 807
 808                         // don't extend looped blines
 809                         if(start_duck_value_node_bline&&!start_duck_value_node_bline->get_loop()&&
 810                            // did we start drawing at either end of the line?
 811                            (start_duck_index==0||start_duck_index==start_duck_value_node_bline->link_count()-1))
 812                         {
 813                                 extend_start=true;
 814                                 shift_origin=true;
 815                                 shift_origin_vector=start_duck->get_origin();
 816                         }
 817                 }while(0);
 818
 819                 // check whether the end of the new line extends an
 820                 // existing line.  this is only the case if the new
 821                 // line isn't a self-contained loop, and if the new
 822                 // line ends at one of the ends of an existing line
 823                 if(finish_duck)do
 824                 {
 825                         if(!(finish_duck_value_desc=finish_duck->get_value_desc()))break;
 826                         if(loop_bline_flag)break;
 827                         if(!finish_duck_value_desc.parent_is_value_node())break;
 828                         finish_duck_index=finish_duck_value_desc.get_index();
 829                         finish_duck_value_node_bline=ValueNode_BLine::Handle::cast_dynamic(finish_duck_value_desc.get_parent_value_node());
 830                         if(!get_auto_extend_flag())break;
 831
 832                         // don't extend looped blines
 833                         if(finish_duck_value_node_bline&&!finish_duck_value_node_bline->get_loop()&&
 834                            (finish_duck_index==0||finish_duck_index==finish_duck_value_node_bline->link_count()-1))
 835                         {
 836                                 if(extend_start)
 837                                 {
 838                                         // we've started and finished drawing at the end of a bline.  we can't
 839                                         // extend both blines, so unless we started and finished at the 2 ends
 840                                         // of the same bline, only extend the one we started on
 841                                         if(start_duck_value_node_bline==finish_duck_value_node_bline)
 842                                                 complete_loop=extend_finish=true;
 843                                 }else{
 844                                         extend_finish=true;
 845                                         shift_origin=true;
 846                                         shift_origin_vector=finish_duck->get_origin();
 847                                 }
 848                         }
 849                 }while(0);
 850
 851                 // if the new line's start didn't extend an existing line,
 852                 // check whether it needs to be linked to an existing duck
 853                 if(!extend_start&&get_auto_link_flag()&&start_duck&&start_duck_value_desc)
 854                         switch(start_duck_value_desc.get_value_type())
 855                         {
 856                         case synfig::ValueBase::TYPE_BLINEPOINT:
 857                                 start_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_desc.get_value_node()),0);
 858                                 // fall through
 859                         case synfig::ValueBase::TYPE_VECTOR:
 860                                 if (shift_origin && shift_origin_vector != start_duck->get_origin())
 861                                         break;
 862                                 shift_origin = true;
 863                                 shift_origin_vector = start_duck->get_origin();
 864                                 get_canvas_interface()->auto_export(start_duck_value_desc);
 865                                 if (extend_finish)
 866                                         if(start_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 867                                                 extend_finish_join_same=true;
 868                                         else
 869                                                 extend_finish_join_different=true;
 870                                 else
 871                                         join_start_no_extend=true;
 872                                 // fall through
 873                         default:break;
 874                         }
 875
 876                 // if the new line's end didn't extend an existing line,
 877                 // check whether it needs to be linked to an existing duck
 878                 if(!extend_finish&&get_auto_link_flag()&&finish_duck&&finish_duck_value_desc)
 879                         switch(finish_duck_value_desc.get_value_type())
 880                         {
 881                         case synfig::ValueBase::TYPE_BLINEPOINT:
 882                                 finish_duck_value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_desc.get_value_node()),0);
 883                                 // fall through
 884                         case synfig::ValueBase::TYPE_VECTOR:
 885                                 if (shift_origin && shift_origin_vector != finish_duck->get_origin())
 886                                         break;
 887                                 shift_origin = true;
 888                                 shift_origin_vector = finish_duck->get_origin();
 889                                 get_canvas_interface()->auto_export(finish_duck_value_desc);
 890                                 if(extend_start)
 891                                         if(finish_duck_value_node_bline&&start_duck_value_node_bline==finish_duck_value_node_bline)
 892                                                 extend_start_join_same=true;
 893                                         else
 894                                                 extend_start_join_different=true;
 895                                 else
 896                                         join_finish_no_extend=true;
 897                                 // fall through
 898                         default:break;
 899                         }
 900         }
 901
 902         ValueNode_BLine::Handle value_node;
 903         std::list<synfig::BLinePoint> trans_bline;
 904
 905         {
 906                 std::list<synfig::BLinePoint>::iterator iter;
 907                 const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 908
 909                 for(iter=bline.begin();iter!=bline.end();++iter)
 910                 {
 911                         BLinePoint bline_point(*iter);
 912                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 913
 914                         bline_point.set_tangent1(
 915                                 transform.unperform(
 916                                         bline_point.get_tangent1()+bline_point.get_vertex()
 917                                 ) -new_vertex
 918                         );
 919
 920                         bline_point.set_tangent2(
 921                                 transform.unperform(
 922                                         bline_point.get_tangent2()+bline_point.get_vertex()
 923                                 ) -new_vertex
 924                         );
 925
 926                         if (shift_origin)
 927                                 new_vertex=new_vertex-shift_origin_vector;
 928
 929                         bline_point.set_vertex(new_vertex);
 930
 931                         trans_bline.push_back(bline_point);
 932                 }
 933                 value_node=ValueNode_BLine::create(synfig::ValueBase(trans_bline,loop_bline_flag));
 934
 935                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
 936                 Layer::Handle layer(get_canvas_view()->get_selection_manager()->get_selected_layer());
 937                 if (layer) canvas=layer->get_canvas();
 938                 value_node->set_member_canvas(canvas);
 939         }
 940
 941         Smach::event_result result;
 942         synfig::ValueNode_DynamicList::ListEntry source;
 943
 944         // the new line's start extends an existing line
 945         if(extend_start)
 946         {
 947                 int target_offset = 0;
 948                 if(complete_loop)trans_bline.pop_back();
 949                 trans_bline.pop_front();
 950                 if(start_duck_index==0)
 951                 {       // We need to reverse the BLine first.
 952                         reverse_bline(trans_bline);
 953                         result=extend_bline_from_begin(start_duck_value_node_bline,trans_bline,complete_loop);
 954                         source=start_duck_value_node_bline->list.front();
 955                         target_offset=trans_bline.size();
 956                 }
 957                 else
 958                 {
 959                         result=extend_bline_from_end(start_duck_value_node_bline,trans_bline,complete_loop);
 960                         source=start_duck_value_node_bline->list.back();
 961                 }
 962
 963                 if(extend_start_join_different)
 964                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 965                                 set_link("point",finish_duck_value_desc.get_value_node());
 966                 else if(extend_start_join_same)
 967                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 968                                 set_link("point",synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(start_duck_value_node_bline->
 969                                                                                                         list[target_offset+finish_duck_index].value_node),0).get_value_node());
 970                 return result;
 971         }
 972
 973         // the new line's end extends an existing line
 974         if(extend_finish)
 975         {
 976                 int target_offset = 0;
 977                 trans_bline.pop_back();
 978                 if(finish_duck_index==0)
 979                 {
 980                         result=extend_bline_from_begin(finish_duck_value_node_bline,trans_bline,false);
 981                         source=finish_duck_value_node_bline->list.front();
 982                         target_offset=trans_bline.size();
 983                 }
 984                 else
 985                 {       // We need to reverse the BLine first.
 986                         reverse_bline(trans_bline);
 987                         result=extend_bline_from_end(finish_duck_value_node_bline,trans_bline,false);
 988                         source=finish_duck_value_node_bline->list.back();
 989                 }
 990
 991                 if(extend_finish_join_different)
 992                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 993                                 set_link("point",start_duck_value_desc.get_value_node());
 994                 else if(extend_finish_join_same)
 995                         LinkableValueNode::Handle::cast_dynamic(source.value_node)->
 996                                 set_link("point",synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(finish_duck_value_node_bline->
 997                                                                                                         list[target_offset+start_duck_index].value_node),0).get_value_node());
 998                 return result;
 999         }
1000
1001         if (join_start_no_extend)
1002                 LinkableValueNode::Handle::cast_dynamic(value_node->list.front().value_node)->
1003                   set_link("point",start_duck_value_desc.get_value_node());
1004
1005         if (join_finish_no_extend)
1006                 LinkableValueNode::Handle::cast_dynamic(value_node->list.back().value_node)->
1007                   set_link("point",finish_duck_value_desc.get_value_node());
1008
1009         if(get_auto_export_flag())
1010                 if (!get_canvas_interface()->add_value_node(value_node,get_id()))
1011                 {
1012                         /* it's no big deal, is it?  let's keep the shape anyway */
1013                         // get_canvas_view()->get_ui_interface()->error(_("Unable to add value node"));
1014                         // group.cancel();
1015                         // increment_id();
1016                         // return Smach::RESULT_ERROR;
1017                 }
1018
1019         last_stroke=value_node;
1020         last_stroke_id=get_id();
1021
1022         {
1023                 // Create the layer(s)
1024                 Layer::Handle layer;
1025                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
1026                 int depth(0);
1027
1028                 // we are temporarily using the layer to hold something
1029                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1030                 if(layer)
1031                 {
1032                         depth=layer->get_depth();
1033                         canvas=layer->get_canvas();
1034                 }
1035
1036                 // fill_last_stroke() will take care of clearing the selection if we're calling it
1037                 if(get_outline_flag() && get_region_flag())
1038                 {
1039                         if (fill_last_stroke_and_unselect_other_layers() == Smach::RESULT_ERROR)
1040                         {
1041                                 get_canvas_view()->get_selection_manager()->set_selected_layers(layer_list);
1042                                 get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
1043                                 group.cancel();
1044                                 return Smach::RESULT_ERROR;
1045                         }
1046                 }
1047                 else
1048                         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
1049
1050                 //int number(synfig::UniqueID().get_uid());
1051
1052                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1053
1054                 // if they're both defined, we'll add the region later
1055                 if(get_outline_flag())
1056                 {
1057                         layer=get_canvas_interface()->add_layer_to("outline",canvas,depth);
1058                         if (!layer)
1059                         {
1060                                 get_canvas_view()->get_selection_manager()->set_selected_layers(layer_list);
1061                                 get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
1062                                 group.cancel();
1063                                 return Smach::RESULT_ERROR;
1064                         }
1065                         layer->set_description(get_id()+_(" Outline"));
1066                 }
1067                 else
1068                 {
1069                         layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
1070                         if (!layer)
1071                         {
1072                                 get_canvas_view()->get_selection_manager()->set_selected_layers(layer_list);
1073                                 get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
1074                                 group.cancel();
1075                                 return Smach::RESULT_ERROR;
1076                         }
1077                         layer->set_description(get_id()+_(" Region"));
1078                 }
1079
1080                 if(get_feather())
1081                 {
1082                         layer->set_param("feather",get_feather());
1083                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
1084                 }
1085                 assert(layer);
1086                 //layer->set_description(strprintf("Stroke %d",number));
1087                 //get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
1088
1089                 if (shift_origin)
1090                         get_canvas_interface()->
1091                           change_value(synfigapp::ValueDesc(layer,"origin"),shift_origin_vector);
1092
1093                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
1094
1095                 assert(action);
1096
1097                 action->set_param("canvas",get_canvas());
1098                 action->set_param("canvas_interface",get_canvas_interface());
1099                 action->set_param("layer",layer);
1100                 if(!action->set_param("param",String("bline")))
1101                         synfig::error("LayerParamConnect didn't like \"param\"");
1102                 if(!action->set_param("value_node",ValueNode::Handle(value_node)))
1103                         synfig::error("LayerParamConnect didn't like \"value_node\"");
1104
1105                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1106                 {
1107                         get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
1108                         group.cancel();
1109                         increment_id();
1110                         //refresh_ducks();
1111                         return Smach::RESULT_ERROR;
1112                 }
1113                 layer_list.push_back(layer);
1114                 get_canvas_view()->get_selection_manager()->set_selected_layers(layer_list);
1115                 //refresh_ducks();
1116         }
1117
1118         increment_id();
1119         return Smach::RESULT_ACCEPT;
1120 }
1121
1122 #ifdef _DEBUG
1123 static void
1124 debug_show_vertex_list(int iteration, std::list<synfigapp::ValueDesc>& vertex_list,
1125                                            std::string title, int current)
1126 {
1127         std::list<synfigapp::ValueDesc>::iterator i = vertex_list.begin();
1128         printf("\n%s\n  ----- iter %d : ", title.c_str(), iteration);
1129         int c = 0;
1130         synfig::LinkableValueNode::Handle last = 0;
1131         int start = -1;
1132         int index;
1133         int prev;
1134         int dir = 0;
1135         bool started = false;
1136         for(;i!=vertex_list.end();i++,c++)
1137         {
1138                 synfigapp::ValueDesc value_desc(*i);
1139
1140                 if (value_desc.parent_is_value_node()) {
1141                         if(value_desc.parent_is_linkable_value_node())
1142                         {
1143                                 index = value_desc.get_index();
1144                                 // printf("<%d>", index);
1145                                 if (last == synfig::LinkableValueNode::Handle::cast_reinterpret(value_desc.get_parent_value_node()))
1146                                 {
1147                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1148                                         if (start != -1)
1149                                         {
1150                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1151                                                 if (c == current)
1152                                                 {
1153                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1154                                                         if (dir)
1155                                                         {
1156                                                                 if (started) printf(", "); else started = true;
1157                                                                 printf("%d--%d", start, prev);
1158                                                         }
1159                                                         else
1160                                                         {
1161                                                                 if (started) printf(", "); else started = true;
1162                                                                 printf("%d", start);
1163                                                         }
1164                                                         printf(", *%d*", index);
1165                                                         start = -1;
1166                                                 }
1167                                                 else if (dir == 0)
1168                                                 {
1169                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1170                                                         if (index == start + 1)
1171                                                         {
1172                                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1173                                                                 dir = 1;
1174                                                                 prev = index;
1175                                                         }
1176                                                         else if (index == start - 1)
1177                                                         {
1178                                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1179                                                                 dir = -1;
1180                                                                 prev = index;
1181                                                         }
1182                                                         else
1183                                                         {
1184                                                                 if (started) printf(", "); else started = true;
1185                                                                 printf("%d", start);
1186                                                                 start = index;
1187                                                         }
1188                                                 }
1189                                                 else if (index == prev + dir)
1190                                                 {
1191                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1192                                                         prev = index;
1193                                                 }
1194                                                 else
1195                                                 {
1196                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1197                                                         if (started) printf(", "); else started = true;
1198                                                         if (prev != start)
1199                                                                 printf("%d--%d", start, prev);
1200                                                         else
1201                                                                 printf("%d", start);
1202                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1203                                                         start = index;
1204                                                         dir = 0;
1205                                                 }
1206                                         }
1207                                         else
1208                                         {
1209                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1210                                                 if (c == current)
1211                                                 {
1212                                                         if (started) printf(", "); else started = true;
1213                                                         printf("*%d*", index);
1214                                                 }
1215                                                 else
1216                                                 {
1217                                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1218                                                         start = index;
1219                                                         dir = 0;
1220                                                 }
1221                                         }
1222                                 }
1223                                 else
1224                                 {
1225                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1226                                         if (last)
1227                                         {
1228                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1229                                                 if (start != -1)
1230                                                 {
1231                                                         if (started) printf(", "); else started = true;
1232                                                         if (dir != 0)
1233                                                                 printf("%d--%d", start, prev);
1234                                                         else
1235                                                                 printf("%d", start);
1236                                                 }
1237                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1238                                                 printf(") ");
1239                                         }
1240                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1241                                         last = synfig::LinkableValueNode::Handle::cast_reinterpret(value_desc.get_parent_value_node());
1242                                         printf("%d:(", synfig::LinkableValueNode::Handle::cast_reinterpret(value_desc.get_parent_value_node())->link_count());
1243                                         started = false;
1244                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1245                                         if (c == current)
1246                                         {
1247                                                 start = -1;
1248                                                 printf("*%d*", index);
1249                                         }
1250                                         else
1251                                         {
1252                                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1253                                                 start = index;
1254                                                 dir = 0;
1255                                         }
1256                                         // printf("\n%s:%d\n", __FILE__, __LINE__);
1257                                 }
1258                                 // printf("\n%s:%d\n", __FILE__, __LINE__);
1259                         }
1260                         else if (last)
1261                                 if (last) printf("?!) ");
1262                 }
1263                 else
1264                 {
1265                         last = 0;
1266                         printf("? ");
1267                 }
1268         }
1269         if (last)
1270         {
1271                 if (started) printf(", "); else started = true;
1272                 if (start != -1)
1273                 {
1274                         if (dir != 0)
1275                                 printf("%d--%d", start, prev);
1276                         else
1277                                 printf("%d", start);
1278                 }
1279                 printf(")");
1280         }
1281         printf("\n");
1282 }
1283 #else  // _DEBUG
1284 #define debug_show_vertex_list(a,b,c,d)
1285 #endif  // _DEBUG
1286
1287 Smach::event_result
1288 StateDraw_Context::new_region(std::list<synfig::BLinePoint> bline, synfig::Real radius)
1289 {
1290         // Create the action group
1291         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Define Region"));
1292
1293         std::list<synfigapp::ValueDesc> vertex_list;
1294
1295         printf("new_region with %zd bline points\n", bline.size());
1296
1297         // First we need to come up with a rough list of
1298         // BLinePoints that we are going to be using to
1299         // define our region.
1300         {
1301                 std::list<synfig::BLinePoint>::iterator iter;
1302                 for(iter=bline.begin();iter!=bline.end();++iter)
1303                 {
1304                         etl::handle<Duck> duck(get_work_area()->find_duck(iter->get_vertex(),0,Duck::TYPE_VERTEX));
1305
1306                         if(!duck)
1307                         {
1308                                 synfig::info(__FILE__":%d: Nothing to enclose!",__LINE__);
1309                                 return Smach::RESULT_OK;
1310                         }
1311
1312                         assert(duck->get_type()==Duck::TYPE_VERTEX);
1313
1314                         synfigapp::ValueDesc value_desc(duck->get_value_desc());
1315
1316                         if(!value_desc)
1317                         {
1318                                 synfig::info(__FILE__":%d: Got a hit, but no ValueDesc on this duck",__LINE__);
1319                                 continue;
1320                         }
1321
1322                         switch(value_desc.get_value_type())
1323                         {
1324                         case synfig::ValueBase::TYPE_BLINEPOINT:
1325                                 //if(vertex_list.empty() || value_desc!=vertex_list.back())
1326                                 vertex_list.push_back(value_desc);
1327                                 assert(vertex_list.back().is_valid());
1328
1329                                 break;
1330                         default:
1331                                 break;
1332                         }
1333                 }
1334         }
1335
1336         assert(vertex_list.back().is_valid());
1337
1338         printf("vertex list with %zd bline points\n", vertex_list.size());
1339
1340         // Remove any duplicates
1341         {
1342         }
1343
1344         ValueNode_BLine::Handle value_node_bline;
1345
1346         // Now we need to test for the trivial case,
1347         // which is where all of the vertices
1348         // come from one BLine.
1349         if(vertex_list.front().parent_is_linkable_value_node())
1350         {
1351                 bool trivial_case(true);
1352                 ValueNode::Handle trivial_case_value_node;
1353
1354                 trivial_case_value_node=vertex_list.front().get_parent_value_node();
1355
1356                 std::list<synfigapp::ValueDesc>::iterator iter;
1357                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1358                 {
1359                         if(trivial_case_value_node!=iter->get_parent_value_node())
1360                         {
1361                                 trivial_case=false;
1362                                 break;
1363                         }
1364                 }
1365
1366                 // \todo - re-enable this code
1367                 if(trivial_case && false)
1368                 {
1369                         synfig::info("all points are on the same bline, so just fill that line");
1370                         value_node_bline=ValueNode_BLine::Handle::cast_dynamic(trivial_case_value_node);
1371
1372                         synfig::info("the line has %d vertices", value_node_bline->link_count());
1373
1374                         if(value_node_bline->link_count() <= 2)
1375                         {
1376                                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1377                                 return Smach::RESULT_OK;
1378                         }
1379                 }
1380         }
1381
1382         if(!value_node_bline)
1383                 if(vertex_list.size()<=2)
1384                 {
1385                         synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1386                         return Smach::RESULT_OK;
1387                 }
1388
1389         // Now we need to clean the list of vertices up
1390         // a bit. This includes inserting missing vertices
1391         // and removing extraneous ones.
1392         // We can do this in multiple passes.
1393         if(!value_node_bline)
1394         {
1395                 debug_show_vertex_list(0, vertex_list, "before shifting stuff", -1);
1396                 // rearrange the list so that the first and last node are on different blines
1397                 std::list<synfigapp::ValueDesc>::iterator iter, start;
1398                 ValueNode::Handle last_value_node = vertex_list.back().get_parent_value_node();
1399                 for(iter = vertex_list.begin(); iter!=vertex_list.end(); iter++)
1400                         if (iter->get_parent_value_node() != last_value_node)
1401                         {
1402                                 vertex_list.insert(vertex_list.end(), vertex_list.begin(), iter);
1403                                 vertex_list.erase(vertex_list.begin(), iter);
1404                                 break;
1405                         }
1406
1407                 debug_show_vertex_list(0, vertex_list, "before detecting direction and limits", -1);
1408                 // rearrange the list so that the first and last node are on different blines
1409                 iter = vertex_list.begin();
1410                 while (iter!=vertex_list.end())
1411                 {
1412                         // make a note of which bline we're looking at
1413                         ValueNode::Handle parent_value_node = iter->get_parent_value_node();
1414                         start = iter;
1415                         int points_in_line = synfig::LinkableValueNode::Handle::cast_reinterpret(parent_value_node)->link_count();
1416                         bool looped = (*parent_value_node)(get_time()).get_loop();
1417                         int this_index, last_index = iter->get_index();
1418                         int min_index = last_index, max_index = last_index;
1419                         bool whole;
1420                         int direction = 0;
1421
1422                         // printf("there are %d points in this line - first is index %d\n", points_in_line, last_index);
1423
1424                         // while we're looking at the same bline, keep going
1425                         iter++;
1426                         while (iter != vertex_list.end() && iter->get_parent_value_node() == parent_value_node)
1427                         {
1428                                 this_index = iter->get_index();
1429                                 // printf("index went from %d to %d\n", last_index, this_index);
1430                                 if (looped)
1431                                 {
1432                                         if (this_index - last_index > points_in_line/2)
1433                                                 while (this_index - last_index > points_in_line/2)
1434                                                         this_index -= points_in_line;
1435                                         else if (last_index - this_index > points_in_line/2)
1436                                                 while (last_index - this_index > points_in_line/2)
1437                                                         this_index += points_in_line;
1438                                 }
1439
1440                                 if (this_index < min_index) min_index = this_index;
1441                                 if (this_index > max_index) max_index = this_index;
1442
1443                                 // printf("so let's imagine index went from %d to %d\n", last_index, this_index);
1444                                 if (this_index > last_index)
1445                                         direction++;
1446                                 else if (this_index < last_index)
1447                                         direction--;
1448
1449                                 last_index = this_index;
1450                                 iter++;
1451                         }
1452
1453                         // printf("min %d and max %d\n", min_index, max_index);
1454                         whole = max_index - min_index >= points_in_line;
1455                         min_index = (min_index % points_in_line + points_in_line) % points_in_line;
1456                         max_index = (max_index % points_in_line + points_in_line) % points_in_line;
1457                         // they drew around a shape more than once - what's the start/end point?  does it matter?
1458                         if (whole) min_index = max_index = (min_index + max_index) / 2;
1459                         // printf("processed min %d max %d whole %d\n", min_index, max_index, whole);
1460
1461                         if (direction < 0)
1462                         {
1463                                 if (whole)
1464                                 {
1465                                         // printf("whole (down) (%d) ", min_index);
1466                                         for (int i = min_index; i >= 0; i--)
1467                                         {
1468                                                 // printf("%d ", i);
1469                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1470                                         }
1471                                         for (int i = points_in_line - 1; i >= min_index; i--)
1472                                         {
1473                                                 // printf("%d ", i);
1474                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1475                                         }
1476                                 }
1477                                 else
1478                                 {
1479                                         // printf("part (down) (%d -> %d) ", max_index, min_index);
1480                                         for (int i = max_index; i != min_index; i--)
1481                                         {
1482                                                 if (i == -1) i = points_in_line - 1;
1483                                                 // printf("%d ", i);
1484                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1485                                         }
1486                                         vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, min_index));
1487                                 }
1488                         }
1489                         else
1490                         {
1491                                 if (whole)
1492                                 {
1493                                         // printf("whole (%d) ", min_index);
1494                                         for (int i = min_index; i < points_in_line; i++)
1495                                         {
1496                                                 // printf("%d ", i);
1497                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1498                                         }
1499                                         for (int i = 0; i <= min_index; i++)
1500                                         {
1501                                                 // printf("%d ", i);
1502                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1503                                         }
1504                                 }
1505                                 else
1506                                 {
1507                                         // printf("part (%d -> %d) ", min_index, max_index);
1508                                         for (int i = min_index; i != max_index; i++)
1509                                         {
1510                                                 if (i == points_in_line) i = 0;
1511                                                 // printf("%d ", i);
1512                                                 vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, i));
1513                                         }
1514                                         vertex_list.insert(start, synfigapp::ValueDesc(parent_value_node, max_index));
1515                                 }
1516                         }
1517                         // printf("\n");
1518                         // debug_show_vertex_list(0, vertex_list, "after insert", -1);
1519                         vertex_list.erase(start, iter);
1520                         // debug_show_vertex_list(0, vertex_list, "after delete", -1);
1521                 }
1522
1523                 debug_show_vertex_list(0, vertex_list, "continuous vertices", -1);
1524
1525                 // \todo reenable or delete this section
1526                 int i=100;
1527                 for(bool done=false;!done && i<30;i++)
1528                 {
1529                         debug_show_vertex_list(i, vertex_list, "in big loop", -1);
1530
1531                         // Set done to "true" for now. If
1532                         // any updates are performed, we will
1533                         // change it back to false.
1534                         done=true;
1535
1536                         std::list<synfigapp::ValueDesc>::iterator prev,next;
1537                         prev=vertex_list.end();prev--;  // Set prev to the last ValueDesc
1538                         next=vertex_list.begin();
1539                         iter=next++; // Set iter to the first value desc, and next to the second
1540
1541                         int current = 0;
1542                         for(;iter!=vertex_list.end();prev=iter,iter++,next++,current++)
1543                         {
1544                                 // we need to be able to erase(next) and can't do that if next is end()
1545                                 if (next == vertex_list.end()) next = vertex_list.begin();
1546                                 debug_show_vertex_list(i, vertex_list, "in loop around vertices", current);
1547                                 synfigapp::ValueDesc value_prev(*prev);
1548                                 synfigapp::ValueDesc value_desc(*iter);
1549                                 synfigapp::ValueDesc value_next(*next);
1550
1551                                 assert(value_desc.is_valid());
1552                                 assert(value_next.is_valid());
1553                                 assert(value_prev.is_valid());
1554
1555                                 // synfig::info("-------");
1556                                 // synfig::info(__FILE__":%d: value_prev 0x%08X:%d",__LINE__,value_prev.get_parent_value_node().get(),value_prev.get_index());
1557                                 // synfig::info(__FILE__":%d: value_desc 0x%08X:%d",__LINE__,value_desc.get_parent_value_node().get(),value_desc.get_index());
1558                                 // synfig::info(__FILE__":%d: value_next 0x%08X:%d",__LINE__,value_next.get_parent_value_node().get(),value_next.get_index());
1559
1560                                 /*
1561                                   if(value_prev.parent_is_value_node() && value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1562                                   {
1563                                   // Remove random extraneous vertices
1564                                   if(value_prev.get_parent_value_node()==value_next.get_parent_value_node() &&
1565                                   value_prev.get_parent_value_node()!=value_desc.get_parent_value_node())
1566                                   {
1567                                   vertex_list.erase(iter);
1568                                   done=false;
1569                                   break;
1570                                   }
1571                                   }
1572                                 */
1573
1574                                 // // Remove duplicate vertices
1575
1576                                 // // if previous is the same as current or
1577                                 // //    current is the same as next, remove current
1578                                 // if(value_prev.get_value_node()==value_desc.get_value_node() ||
1579                                 //    value_desc.get_value_node()==value_next.get_value_node())
1580                                 // {
1581                                 //      vertex_list.erase(iter);
1582                                 //      done=false;
1583                                 //      printf("erased node - i = %d\n", i);
1584                                 //      break;
1585                                 // }
1586
1587                                 // // if previous is the same as next, remove previous?  or next?
1588                                 // if(value_prev.get_value_node()==value_next.get_value_node())
1589                                 // {
1590                                 //      vertex_list.erase(next);
1591                                 //      // vertex_list.erase(prev);
1592                                 //      done=false;
1593                                 //      printf("erased node - i = %d\n", i);
1594                                 //      break;
1595                                 // }
1596
1597                                 // if 'this' and 'next' both have parents
1598                                 if (value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1599                                 {
1600                                         // if they are both on the same bline - this has been handled by new code above
1601                                         if (value_desc.get_parent_value_node() == value_next.get_parent_value_node())
1602                                         {
1603                                                 // // if (next != vertex_list.end())
1604                                                 // {
1605                                                 //      printf("parent loop is %d and node loop is ??\n",
1606                                                 //                 (*(value_desc.get_parent_value_node()))(get_time()).get_loop()
1607                                                 //                 // value_desc.get_value_node().get_loop(),
1608                                                 //              );
1609                                                 //
1610                                                 //      // Fill in missing vertices
1611                                                 //      // \todo take loops into account: seeing (15, 2, 3, 4) probably means that (0, 1) is missing, not 14 through 3
1612                                                 //      if(value_desc.get_index()<value_next.get_index()-1)
1613                                                 //      {
1614                                                 //              debug_show_vertex_list(i, vertex_list,
1615                                                 //                                                         strprintf("same parent, different points this %d < next-1 %d",
1616                                                 //                                                                               value_desc.get_index(), ((value_next.get_index()-1))),
1617                                                 //                                                         current);
1618                                                 //              for (int index = value_desc.get_index()+1; index < value_next.get_index(); index++)
1619                                                 //              {
1620                                                 //                      printf("inserting up %d\n", index);
1621                                                 //                      vertex_list.insert(next, synfigapp::ValueDesc(value_desc.get_parent_value_node(), index));
1622                                                 //              }
1623                                                 //              debug_show_vertex_list(i, vertex_list, "new list", current);
1624                                                 //              done=false;
1625                                                 //              break;
1626                                                 //      }
1627                                                 //      if(value_next.get_index()<value_desc.get_index()-1)
1628                                                 //      {
1629                                                 //              debug_show_vertex_list(i, vertex_list,
1630                                                 //                                                         strprintf("same parent, different points next %d < this-1 %d",
1631                                                 //                                                                               value_next.get_index(), ((value_desc.get_index()-1))),
1632                                                 //                                                         current);
1633                                                 //              for (int index = value_desc.get_index()-1; index > value_next.get_index(); index--)
1634                                                 //              {
1635                                                 //                      printf("inserting down %d\n", index);
1636                                                 //                      vertex_list.insert(next, synfigapp::ValueDesc(value_desc.get_parent_value_node(), index));
1637                                                 //              }
1638                                                 //              debug_show_vertex_list(i, vertex_list, "new list", current);
1639                                                 //              done=false;
1640                                                 //              break;
1641                                                 //      }
1642                                                 // }
1643                                         }
1644                                         // 'this' and 'next' have different parents
1645                                         else
1646                                         {
1647                                                 ValueNode::Handle v1 = value_desc.get_value_node();
1648                                                 ValueNode::Handle v2 = value_desc.get_parent_value_node();
1649                                                 if (v1 == v2)
1650                                                         printf("same\n");
1651                                                 else
1652                                                         printf("different\n");
1653
1654                                                 if (value_desc.get_value_node() != value_next.get_value_node())
1655                                                 {
1656                                                         // Ensure that connections between blines are properly connected
1657                                                         BLinePoint vertex(value_desc.get_value(get_time()).get(BLinePoint()));
1658                                                         BLinePoint vertex_next(value_next.get_value(get_time()).get(BLinePoint()));
1659
1660                                                         //synfig::info("--------");
1661                                                         //synfig::info(__FILE__":%d: vertex: [%f, %f]",__LINE__,vertex.get_vertex()[0],vertex.get_vertex()[1]);
1662                                                         //synfig::info(__FILE__":%d: vertex_next: [%f, %f]",__LINE__,vertex_next.get_vertex()[0],vertex_next.get_vertex()[1]);
1663
1664                                                         // if this vertex is close to the next one, replace this vertex with a new one
1665                                                         // and erase the next one
1666                                                         printf("this point is %5.2f from the next point - compare with %5.2f\n",
1667                                                                    (vertex.get_vertex()-vertex_next.get_vertex()).mag_squared(),
1668                                                                    radius*radius);
1669                                                         if((vertex.get_vertex()-vertex_next.get_vertex()).mag_squared()<radius*radius)
1670                                                         {
1671                                                                 printf("in one - it's close\n");
1672                                                                 ValueNode_Composite::Handle value_node;
1673                                                                 ValueNode_Composite::Handle value_node_next;
1674                                                                 value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node().clone());
1675                                                                 value_node_next=ValueNode_Composite::Handle::cast_dynamic(value_next.get_value_node().clone());
1676                                                                 if(!value_node || !value_node_next)
1677                                                                 {
1678                                                                         synfig::info(__FILE__":%d: Unable to properly connect blines.",__LINE__);
1679                                                                         continue;
1680                                                                 }
1681                                                                 // \todo if next isn't split, don't we want to copy its 'Tangent 1' instead?
1682                                                                 value_node->set_link("t2",value_node_next->get_link("t2"));
1683                                                                 value_node->set_link("split",ValueNode_Const::create(true));
1684
1685                                                                 // get_canvas_interface()->auto_export(value_node);
1686                                                                 printf("exporting\n");
1687                                                                 get_canvas_interface()->add_value_node(value_node,value_node->get_id() + strprintf("foo %d", rand()));
1688
1689                                                                 assert(value_node->is_exported());
1690                                                                 // replace 'this' with the new valuenode
1691                                                                 *iter=synfigapp::ValueDesc(get_canvas(),value_node->get_id());
1692                                                                 printf("erasing next\n");
1693                                                                 printf("erasing next point\n");
1694                                                                 vertex_list.erase(next);
1695                                                                 done=false;
1696                                                                 break;
1697                                                         } // this vertex isn't close to the next one
1698                                                         else if (value_prev.parent_is_value_node())
1699                                                         {
1700                                                                 printf("in two - it's far\n");
1701                                                                 // \todo this only makes sense if prev is on the same bline
1702                                                                 printf("this is index %d\n", value_desc.get_index());
1703                                                                 printf("prev is index %d\n", value_prev.get_index());
1704                                                                 bool positive_trend(value_desc.get_index()>value_prev.get_index());
1705
1706                                                                 if(positive_trend)
1707                                                                 {
1708                                                                         printf("positive trend\n");
1709                                                                         printf("comparing index %d < link_count()-1 = %d-1 = %d\n",
1710                                                                                    value_desc.get_index(),
1711                                                                                    LinkableValueNode::Handle::cast_static(value_desc.get_parent_value_node())->link_count(),
1712                                                                                    LinkableValueNode::Handle::cast_static(value_desc.get_parent_value_node())->link_count()-1);
1713                                                                         if (value_desc.get_index()<LinkableValueNode::Handle::cast_static(value_desc.get_parent_value_node())->link_count()-1)
1714                                                                         {
1715                                                                                 printf("in two - b\n");
1716                                                                                 printf("inserting node with index %d\n", value_desc.get_index()+1);
1717                                                                                 vertex_list.insert(next,
1718                                                                                                                    synfigapp::ValueDesc(value_desc.get_parent_value_node(),
1719                                                                                                                                                                 value_desc.get_index()+1));
1720                                                                                 done=false;
1721                                                                                 break;
1722                                                                         }
1723                                                                 }
1724                                                                 else // !positive_trend
1725                                                                 {
1726                                                                         printf("negative trend\n");
1727                                                                         if(value_desc.get_index()>0)
1728                                                                         {
1729                                                                                 printf("in two - a\n");
1730                                                                                 printf("inserting node on this line with index %d\n",
1731                                                                                            value_desc.get_index()-1);
1732                                                                                 vertex_list.insert(next,
1733                                                                                                                    synfigapp::ValueDesc(value_desc.get_parent_value_node(),
1734                                                                                                                                                                 value_desc.get_index()-1));
1735                                                                                 done=false;
1736                                                                                 break;
1737                                                                         }
1738                                                                 }
1739                                                         }
1740                                                 }
1741                                         }
1742                                 }
1743                         }
1744                 }
1745
1746                 if(vertex_list.size()<=2)
1747                 {
1748                         synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1749                         return Smach::RESULT_OK;
1750                 }
1751
1752                 debug_show_vertex_list(i, vertex_list, "finished tidying list", -1);
1753         }
1754
1755         // If we aren't the trivial case,
1756         // then go ahead and create the new
1757         // BLine value node
1758         if(!value_node_bline)
1759         {
1760                 synfig::info("not all points are on the same bline");
1761                 value_node_bline=ValueNode_BLine::create();
1762
1763                 std::list<synfigapp::ValueDesc>::iterator iter;
1764                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1765                 {
1766                         // Ensure that the vertex is exported.
1767                         get_canvas_interface()->auto_export(*iter);
1768
1769                         value_node_bline->add(iter->get_value_node());
1770                         //value_node_bline->add(ValueNode_BLine::ListEntry(iter->get_value_node()));
1771                 }
1772
1773                 value_node_bline->set_loop(true);
1774         }
1775
1776         get_canvas_interface()->auto_export(value_node_bline);
1777
1778         // Now we create the region layer
1779         // Create the layer
1780         {
1781                 Layer::Handle layer;
1782                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
1783                 int depth(0);
1784
1785                 // we are temporarily using the layer to hold something
1786                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1787                 if(layer)
1788                 {
1789                         depth=layer->get_depth();
1790                         canvas=layer->get_canvas();
1791                 }
1792
1793                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1794
1795                 layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
1796                 if (!layer)
1797                 {
1798                         get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
1799                         group.cancel();
1800                         return Smach::RESULT_ERROR;
1801                 }
1802
1803                 if(get_feather())
1804                 {
1805                         layer->set_param("feather",get_feather());
1806                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
1807                 }
1808                 get_canvas_interface()->signal_layer_param_changed()(layer,"color");
1809
1810                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
1811
1812                 assert(action);
1813
1814                 action->set_param("canvas",get_canvas());
1815                 action->set_param("canvas_interface",get_canvas_interface());
1816                 action->set_param("layer",layer);
1817                 if(!action->set_param("param",String("bline")))
1818                         synfig::error("LayerParamConnect didn't like \"param\"");
1819                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
1820                         synfig::error("LayerParamConnect didn't like \"value_node\"");
1821
1822                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1823                 {
1824                         get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1825                         group.cancel();
1826                         return Smach::RESULT_ERROR;
1827                 }
1828                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1829         }
1830
1831         return Smach::RESULT_ACCEPT;
1832 }
1833
1834 void
1835 StateDraw_Context::refresh_ducks()
1836 {
1837         get_canvas_view()->queue_rebuild_ducks();
1838 /*
1839         get_work_area()->clear_ducks();
1840
1841
1842         std::list< etl::smart_ptr<std::list<synfig::Point> > >::iterator iter;
1843
1844         for(iter=stroke_list.begin();iter!=stroke_list.end();++iter)
1845         {
1846                 get_work_area()->add_stroke(*iter);
1847         }
1848
1849         get_work_area()->queue_draw();
1850 */
1851 }
1852
1853
1854 Smach::event_result
1855 StateDraw_Context::extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1856 {
1857         // Create the action group
1858         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1859
1860         if (complete_loop)
1861         {
1862                 synfigapp::Action::Handle action(synfigapp::Action::create("ValueNodeDynamicListLoop"));
1863                 assert(action);
1864
1865                 action->set_param("canvas",get_canvas());
1866                 action->set_param("canvas_interface",get_canvas_interface());
1867                 action->set_param("value_node",ValueNode::Handle(value_node));
1868
1869                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1870                 {
1871                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1872                         group.cancel();
1873                         return Smach::RESULT_ERROR;
1874                 }
1875         }
1876
1877         std::list<synfig::BLinePoint>::reverse_iterator iter;
1878         for(iter=bline.rbegin();!(iter==bline.rend());++iter)
1879         {
1880                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1881
1882                 synfigapp::Action::Handle action(synfigapp::Action::create("ValueNodeDynamicListInsert"));
1883
1884                 assert(action);
1885                 synfigapp::ValueDesc value_desc(value_node,0);
1886
1887                 action->set_param("canvas",get_canvas());
1888                 action->set_param("canvas_interface",get_canvas_interface());
1889                 action->set_param("value_desc",value_desc);
1890                 if(!action->set_param("item",ValueNode::Handle(composite)))
1891                         synfig::error("ACTION didn't like \"item\"");
1892
1893                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1894                 {
1895                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1896                         group.cancel();
1897                         //refresh_ducks();
1898                         return Smach::RESULT_ERROR;
1899                 }
1900         }
1901         last_stroke=value_node;
1902         return Smach::RESULT_ACCEPT;
1903 }
1904
1905 Smach::event_result
1906 StateDraw_Context::extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline,bool complete_loop)
1907 {
1908         // Create the action group
1909         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1910
1911         if (complete_loop)
1912         {
1913                 synfigapp::Action::Handle action(synfigapp::Action::create("ValueNodeDynamicListLoop"));
1914                 assert(action);
1915
1916                 action->set_param("canvas",get_canvas());
1917                 action->set_param("canvas_interface",get_canvas_interface());
1918                 action->set_param("value_node",ValueNode::Handle(value_node));
1919
1920                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1921                 {
1922                         get_canvas_view()->get_ui_interface()->error(_("Unable to set loop for bline"));
1923                         group.cancel();
1924                         return Smach::RESULT_ERROR;
1925                 }
1926         }
1927
1928         std::list<synfig::BLinePoint>::iterator iter;
1929         for(iter=bline.begin();iter!=bline.end();++iter)
1930         {
1931                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1932
1933                 synfigapp::Action::Handle action(synfigapp::Action::create("ValueNodeDynamicListInsert"));
1934
1935                 assert(action);
1936                 synfigapp::ValueDesc value_desc(value_node,value_node->link_count());
1937
1938                 action->set_param("canvas",get_canvas());
1939                 action->set_param("canvas_interface",get_canvas_interface());
1940                 action->set_param("value_desc",value_desc);
1941                 if(!action->set_param("item",ValueNode::Handle(composite)))
1942                         synfig::error("ACTION didn't like \"item\"");
1943
1944                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1945                 {
1946                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1947                         group.cancel();
1948                         //refresh_ducks();
1949                         return Smach::RESULT_ERROR;
1950                 }
1951         }
1952         last_stroke=value_node;
1953         return Smach::RESULT_ACCEPT;
1954 }
1955
1956 void
1957 StateDraw_Context::reverse_bline(std::list<synfig::BLinePoint> &bline)
1958 {
1959         int i;
1960
1961         std::list<synfig::BLinePoint>::iterator iter,eiter;
1962         iter=bline.begin();
1963         eiter=bline.end();
1964         eiter--;
1965         for(i=0;i<(int)bline.size()/2;++iter,--eiter,i++)
1966         {
1967                 iter_swap(iter,eiter);
1968                 iter->reverse();
1969                 eiter->reverse();
1970         }
1971 }
1972
1973 Smach::event_result
1974 StateDraw_Context::fill_last_stroke_and_unselect_other_layers()
1975 {
1976         if(!last_stroke)
1977                 return Smach::RESULT_OK;
1978
1979         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Fill Stroke"));
1980
1981         Layer::Handle layer;
1982
1983         get_canvas_interface()->auto_export(last_stroke);
1984
1985         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1986
1987         Canvas::Handle canvas(get_canvas_view()->get_canvas());
1988         int depth(0);
1989
1990         layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1991         if(layer)
1992         {
1993                 depth=layer->get_depth();
1994                 canvas=layer->get_canvas();
1995         }
1996
1997         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
1998         layer=get_canvas_interface()->add_layer_to("region", canvas, depth);
1999         if (!layer) return Smach::RESULT_ERROR;
2000         layer->set_description(last_stroke_id + _(" Region"));
2001
2002         synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
2003
2004         assert(action);
2005
2006         action->set_param("canvas",get_canvas());
2007         action->set_param("canvas_interface",get_canvas_interface());
2008         action->set_param("layer",layer);
2009         if(!action->set_param("param",String("bline")))
2010                 synfig::error("LayerParamConnect didn't like \"param\"");
2011         if(!action->set_param("value_node",ValueNode::Handle(last_stroke)))
2012                 synfig::error("LayerParamConnect didn't like \"value_node\"");
2013
2014         if(!get_canvas_interface()->get_instance()->perform_action(action))
2015         {
2016                 get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
2017                 group.cancel();
2018                 return Smach::RESULT_OK;
2019         }
2020         get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
2021         return Smach::RESULT_OK;
2022 }
2023
2024 void
2025 StateDraw_Context::fill_last_stroke()
2026 {
2027         if(!last_stroke)
2028                 return;
2029
2030         synfigapp::SelectionManager::LayerList layer_list = get_canvas_view()->get_selection_manager()->get_selected_layers();
2031         fill_last_stroke_and_unselect_other_layers();
2032         get_canvas_view()->get_selection_manager()->set_selected_layers(layer_list);
2033 }