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

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