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

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