The 'polygon', 'draw', 'sketch', and 'width' tools are disabled by default. This...
[synfig.git] / synfig-studio / trunk / src / gtkmm / state_draw.cpp
1 /* === S Y N F I G ========================================================= */
2 /*!     \file rotoscope_bline.cpp
3 **      \brief Template File
4 **
5 **      $Id: state_draw.cpp,v 1.1.1.1 2005/01/07 03:34:36 darco Exp $
6 **
7 **      \legal
8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 **
10 **      This package is free software; you can redistribute it and/or
11 **      modify it under the terms of the GNU General Public License as
12 **      published by the Free Software Foundation; either version 2 of
13 **      the License, or (at your option) any later version.
14 **
15 **      This package is distributed in the hope that it will be useful,
16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 **      General Public License for more details.
19 **      \endlegal
20 */
21 /* ========================================================================= */
22
23 /* === H E A D E R S ======================================================= */
24
25 #ifdef USING_PCH
26 #       include "pch.h"
27 #else
28 #ifdef HAVE_CONFIG_H
29 #       include <config.h>
30 #endif
31
32 #include <gtkmm/dialog.h>
33 #include <gtkmm/entry.h>
34
35 #include <synfig/valuenode_dynamiclist.h>
36
37 #include "state_draw.h"
38 #include "state_stroke.h"
39 #include "canvasview.h"
40 #include "workarea.h"
41 #include "app.h"
42 #include <synfig/valuenode_bline.h>
43 #include <synfig/valuenode_composite.h>
44 #include <ETL/hermite>
45 #include <ETL/calculus>
46 #include <utility>
47 #include "event_mouse.h"
48 #include "event_layerclick.h"
49 #include "toolbox.h"
50
51 #include <synfigapp/blineconvert.h>
52 #include <synfigapp/main.h>
53
54 #include <ETL/gaussian>
55 #include "dialog_tooloptions.h"
56
57 #include <gtkmm/table.h>
58 #include <gtkmm/label.h>
59 #include <gtkmm/button.h>
60 #include <gtkmm/checkbutton.h>
61 #include <gtkmm/scale.h>
62 #include <sigc++/connection.h>
63
64 #endif
65
66 /* === U S I N G =========================================================== */
67
68 using namespace std;
69 using namespace etl;
70 using namespace synfig;
71 using namespace studio;
72
73 /* === M A C R O S ========================================================= */
74
75 /* === G L O B A L S ======================================================= */
76
77 StateDraw studio::state_draw;
78
79 /* === C L A S S E S & S T R U C T S ======================================= */
80
81 class studio::StateDraw_Context : public sigc::trackable
82 {
83         typedef etl::smart_ptr<std::list<synfig::Point> > StrokeData;
84         typedef etl::smart_ptr<std::list<synfig::Real> > WidthData;
85         
86         typedef list< pair<StrokeData,WidthData> > StrokeQueue;
87         
88         StrokeQueue stroke_queue;
89         
90         
91         etl::handle<CanvasView> canvas_view_;
92         CanvasView::IsWorking is_working;
93         
94         bool prev_table_status;
95         bool loop_;
96         bool prev_workarea_layer_status_;
97
98         int nested;
99         SigC::Connection process_queue_connection;
100         
101         ValueNode_BLine::Handle last_stroke;
102         
103         Gtk::Menu menu;
104
105         //Duckmatic::Push duckmatic_push;
106         
107         std::list< etl::smart_ptr<std::list<synfig::Point> > > stroke_list;
108
109         void refresh_ducks();
110         
111         Duckmatic::Type old_duckmask;
112
113         void fill_last_stroke();
114         
115         Smach::event_result new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius);
116
117         Smach::event_result new_region(std::list<synfig::BLinePoint> bline,synfig::Real radius);
118
119         Smach::event_result extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline);
120         Smach::event_result extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline);
121         void reverse_bline(std::list<synfig::BLinePoint> &bline);
122
123         synfigapp::Settings& settings;
124
125         Gtk::Table options_table;
126         Gtk::CheckButton checkbutton_pressure_width;
127         Gtk::CheckButton checkbutton_round_ends;
128         Gtk::CheckButton checkbutton_auto_loop;
129         Gtk::CheckButton checkbutton_auto_connect;
130         Gtk::CheckButton checkbutton_region_only;
131         Gtk::Button button_fill_last_stroke;
132         
133         //pressure spinner and such
134         Gtk::Adjustment  adj_min_pressure;
135         Gtk::SpinButton  spin_min_pressure;
136         Gtk::CheckButton check_min_pressure;
137
138         Gtk::Adjustment  adj_feather;
139         Gtk::SpinButton  spin_feather;
140         
141         Gtk::Adjustment  adj_globalthres;
142         Gtk::SpinButton  spin_globalthres;
143         
144         Gtk::Adjustment  adj_localthres;
145         Gtk::CheckButton check_localerror;
146         void UpdateErrorBox();  //switches the stuff if need be :)
147
148         //Added by Adrian - data drive HOOOOO
149         synfigapp::BLineConverter blineconv;
150
151 public:
152         bool get_pressure_width_flag()const { return checkbutton_pressure_width.get_active(); }
153         void set_pressure_width_flag(bool x) { return checkbutton_pressure_width.set_active(x); }
154
155         bool get_auto_loop_flag()const { return checkbutton_auto_loop.get_active(); }
156         void set_auto_loop_flag(bool x) { return checkbutton_auto_loop.set_active(x); }
157
158         bool get_auto_connect_flag()const { return checkbutton_auto_connect.get_active(); }
159         void set_auto_connect_flag(bool x) { return checkbutton_auto_connect.set_active(x); }
160
161         bool get_region_only_flag()const { return checkbutton_region_only.get_active(); }
162         void set_region_only_flag(bool x) { return checkbutton_region_only.set_active(x); }
163         
164         Real get_min_pressure() const { return adj_min_pressure.get_value(); }
165         void set_min_pressure(Real x) { return adj_min_pressure.set_value(x); }
166
167         Real get_feather() const { return adj_feather.get_value(); }
168         void set_feather(Real x) { return adj_feather.set_value(x); }
169         
170         Real get_gthres() const { return adj_globalthres.get_value(); }
171         void set_gthres(Real x) { return adj_globalthres.set_value(x); }
172         
173         Real get_lthres() const { return adj_localthres.get_value(); }
174         void set_lthres(Real x) { return adj_localthres.set_value(x); }
175         
176         bool get_local_error_flag() const { return check_localerror.get_active(); }
177         void set_local_error_flag(bool x) { check_localerror.set_active(x); }
178         
179         bool get_min_pressure_flag()const { return check_min_pressure.get_active(); }
180         void set_min_pressure_flag(bool x) { check_min_pressure.set_active(x); }
181
182         void load_settings();
183         void save_settings();
184         
185         Smach::event_result event_stop_handler(const Smach::event& x);
186
187         Smach::event_result event_refresh_handler(const Smach::event& x);
188
189         Smach::event_result event_mouse_down_handler(const Smach::event& x);
190
191         Smach::event_result event_stroke(const Smach::event& x);
192         Smach::event_result event_refresh_tool_options(const Smach::event& x);
193         void refresh_tool_options();
194
195         Smach::event_result process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag=false);
196
197         bool process_queue();
198         
199
200         StateDraw_Context(CanvasView* canvas_view);
201
202         ~StateDraw_Context();
203
204         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
205         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
206         synfig::Time get_time()const { return get_canvas_interface()->get_time(); }
207         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
208         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
209         
210         //void on_user_click(synfig::Point point);
211
212 //      bool run();
213 };      // END of class StateDraw_Context
214
215
216 /* === M E T H O D S ======================================================= */
217
218 StateDraw::StateDraw():
219         Smach::state<StateDraw_Context>("draw")
220 {       
221         insert(event_def(EVENT_STOP,&StateDraw_Context::event_stop_handler));
222         insert(event_def(EVENT_REFRESH,&StateDraw_Context::event_refresh_handler));
223         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateDraw_Context::event_mouse_down_handler));
224         insert(event_def(EVENT_WORKAREA_STROKE,&StateDraw_Context::event_stroke));
225         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateDraw_Context::event_refresh_tool_options));
226 }
227
228 StateDraw::~StateDraw()
229 {
230 }
231
232
233 void
234 StateDraw_Context::load_settings()
235 {       
236         String value;
237
238         if(settings.get_value("draw.pressure_width",value) && value=="0")
239                 set_pressure_width_flag(false);
240         else
241                 set_pressure_width_flag(true);
242
243         if(settings.get_value("draw.auto_loop",value) && value=="0")
244                 set_auto_loop_flag(false);
245         else
246                 set_auto_loop_flag(true);
247
248         if(settings.get_value("draw.auto_connect",value) && value=="0")
249                 set_auto_connect_flag(false);
250         else
251                 set_auto_connect_flag(true);
252
253         if(settings.get_value("draw.region_only",value) && value=="1")
254                 set_region_only_flag(true);
255         else
256                 set_region_only_flag(false);
257         
258         if(settings.get_value("draw.min_pressure_on",value) && value=="0")
259                 set_min_pressure_flag(false);
260         else
261                 set_min_pressure_flag(true);
262         
263         if(settings.get_value("draw.min_pressure",value))
264         {
265                 Real n = atof(value.c_str());
266                 set_min_pressure(n);
267         }else
268                 set_min_pressure(0);
269
270         if(settings.get_value("draw.feather",value))
271         {
272                 Real n = atof(value.c_str());
273                 set_feather(n);
274         }else
275                 set_feather(0); 
276         
277         if(settings.get_value("draw.gthreshold",value))
278         {
279                 Real n = atof(value.c_str());
280                 set_gthres(n);
281         }
282         
283         if(settings.get_value("draw.lthreshold",value))
284         {
285                 Real n = atof(value.c_str());
286                 set_lthres(n);
287         }
288         
289         if(settings.get_value("draw.localize",value) && value == "1")
290                 set_local_error_flag(true);
291         else
292                 set_local_error_flag(false);
293 }
294
295 void
296 StateDraw_Context::save_settings()
297 {       
298         settings.set_value("draw.pressure_width",get_pressure_width_flag()?"1":"0");
299         settings.set_value("draw.auto_loop",get_auto_loop_flag()?"1":"0");
300         settings.set_value("draw.auto_connect",get_auto_connect_flag()?"1":"0");
301         settings.set_value("draw.region_only",get_region_only_flag()?"1":"0");
302         settings.set_value("draw.min_pressure",strprintf("%f",get_min_pressure()));
303         settings.set_value("draw.feather",strprintf("%f",get_feather()));
304         settings.set_value("draw.min_pressure_on",get_min_pressure_flag()?"1":"0");
305         settings.set_value("draw.gthreshold",strprintf("%f",get_gthres()));
306         settings.set_value("draw.lthreshold",strprintf("%f",get_lthres()));     
307         settings.set_value("draw.localize",get_local_error_flag()?"1":"0");
308 }
309
310 StateDraw_Context::StateDraw_Context(CanvasView* canvas_view):
311         canvas_view_(canvas_view),
312         is_working(*canvas_view),
313         loop_(false),
314         prev_workarea_layer_status_(get_work_area()->allow_layer_clicks),
315         settings(synfigapp::Main::get_selected_input_device()->settings()),
316         checkbutton_pressure_width(_("Pressure Width")),
317         checkbutton_auto_loop(_("Auto Loop")),
318         checkbutton_auto_connect(_("Auto Connect")),
319         checkbutton_region_only(_("Create Region Only")),
320         button_fill_last_stroke(_("Fill Last Stroke")),
321         adj_min_pressure(0,0,1,0.01,0.1),
322         spin_min_pressure(adj_min_pressure,0.1,3),
323         check_min_pressure(_("Min Pressure")),
324         adj_feather(0,0,10000,0.01,0.1),
325         spin_feather(adj_feather,0.01,4),
326         adj_globalthres(.70f,0.01,10000,0.01,0.1),
327         spin_globalthres(adj_globalthres,0.01,3),
328         adj_localthres(20,1,100000,0.1,1),      
329         check_localerror(_("LocalError"))
330         
331 {
332         synfig::info("STATE SKETCH: entering state");
333
334         nested=0;
335         load_settings();
336         
337         UpdateErrorBox();
338         
339         //options_table.attach(*manage(new Gtk::Label(_("Draw Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);        
340         options_table.attach(checkbutton_pressure_width, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
341         options_table.attach(checkbutton_auto_loop, 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);    
342         options_table.attach(checkbutton_auto_connect, 0, 2, 3, 4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0); 
343         options_table.attach(checkbutton_region_only, 0, 2, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);  
344         
345         options_table.attach(check_min_pressure, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
346         options_table.attach(spin_min_pressure, 0, 2, 6, 7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
347
348         options_table.attach(*manage(new Gtk::Label(_("Feather"))), 0, 1, 7, 8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);    
349         options_table.attach(spin_feather, 1, 2, 7, 8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
350         
351         options_table.attach(check_localerror, 0, 2, 8, 9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0); 
352         options_table.attach(*manage(new Gtk::Label(_("Smooth"))), 0, 1, 9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);    
353         options_table.attach(spin_globalthres, 1, 2, 9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
354
355         //options_table.attach(button_fill_last_stroke, 0, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);      
356         
357         button_fill_last_stroke.signal_pressed().connect(sigc::mem_fun(*this,&StateDraw_Context::fill_last_stroke));
358         check_localerror.signal_toggled().connect(sigc::mem_fun(*this,&StateDraw_Context::UpdateErrorBox));
359         
360         options_table.show_all();
361         refresh_tool_options();
362         //App::dialog_tool_options->set_widget(options_table);
363         App::dialog_tool_options->present();
364         
365         
366         old_duckmask=get_work_area()->get_type_mask();
367         get_work_area()->set_type_mask(Duck::TYPE_ALL-Duck::TYPE_TANGENT-Duck::TYPE_WIDTH);
368         
369         // Turn off layer clicking
370         get_work_area()->allow_layer_clicks=false;
371
372         // Turn off duck clicking
373         get_work_area()->allow_duck_clicks=false;
374         
375         // clear out the ducks
376         //get_work_area()->clear_ducks();
377         
378         // Refresh the work area
379         //get_work_area()->queue_draw();
380         
381         // Hide the tables if they are showing
382         prev_table_status=get_canvas_view()->tables_are_visible();
383         //if(prev_table_status)get_canvas_view()->hide_tables();
384                 
385         // Hide the time bar
386         get_canvas_view()->hide_timebar();
387         
388         // Connect a signal
389         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateDraw_Context::on_user_click));
390
391         get_canvas_view()->work_area->set_cursor(Gdk::PENCIL);
392
393         App::toolbox->refresh();
394         
395         refresh_ducks();
396 }
397
398
399 void StateDraw_Context::UpdateErrorBox()
400 {
401         if(get_local_error_flag())
402         {
403                 spin_globalthres.set_adjustment(adj_localthres);
404                 spin_globalthres.set_value(adj_localthres.get_value());
405                 spin_globalthres.set_increments(0.1,1);
406         }else
407         {
408                 spin_globalthres.set_adjustment(adj_globalthres);
409                 spin_globalthres.set_value(adj_globalthres.get_value());
410                 spin_globalthres.set_increments(0.01,.1);
411         }
412         
413         spin_globalthres.update();
414 }
415
416 void
417 StateDraw_Context::refresh_tool_options()
418 {
419         App::dialog_tool_options->clear();
420         App::dialog_tool_options->set_widget(options_table);
421         App::dialog_tool_options->set_local_name(_("Draw Tool"));
422         App::dialog_tool_options->set_name("draw");
423         
424         App::dialog_tool_options->add_button(
425                 Gtk::StockID("synfig-fill"),
426                 _("Fill Last Stroke")
427         )->signal_clicked().connect(
428                 sigc::mem_fun(
429                         *this,
430                         &StateDraw_Context::fill_last_stroke
431                 )
432         );
433
434 }
435
436 Smach::event_result
437 StateDraw_Context::event_refresh_tool_options(const Smach::event& x)
438 {
439         refresh_tool_options();
440         return Smach::RESULT_ACCEPT;
441 }
442
443 StateDraw_Context::~StateDraw_Context()
444 {
445         save_settings();
446
447         App::dialog_tool_options->clear();
448
449         get_work_area()->set_type_mask(old_duckmask);
450         
451         get_canvas_view()->work_area->reset_cursor();
452
453         // Restore layer clicking
454         get_work_area()->allow_layer_clicks=prev_workarea_layer_status_;
455
456         // Restore duck clicking
457         get_work_area()->allow_duck_clicks=true;
458
459         // Show the time bar
460         if(get_canvas_view()->get_canvas()->rend_desc().get_time_start()!=get_canvas_view()->get_canvas()->rend_desc().get_time_end())
461                 get_canvas_view()->show_timebar();
462
463         // Bring back the tables if they were out before
464         if(prev_table_status)get_canvas_view()->show_tables();
465                         
466         // Refresh the work area
467         get_work_area()->queue_draw();
468
469         App::toolbox->refresh();
470 }
471
472 Smach::event_result
473 StateDraw_Context::event_stop_handler(const Smach::event& x)
474 {
475         throw Smach::egress_exception();
476 }
477
478 Smach::event_result
479 StateDraw_Context::event_refresh_handler(const Smach::event& x)
480 {
481         refresh_ducks();
482         return Smach::RESULT_ACCEPT;
483 }
484
485 Smach::event_result
486 StateDraw_Context::event_mouse_down_handler(const Smach::event& x)
487 {
488         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
489         switch(event.button)
490         {
491         case BUTTON_LEFT:
492                 {
493                         // Enter the stroke state to get the stroke
494                         get_canvas_view()->get_smach().push_state(&state_stroke);
495                         return Smach::RESULT_ACCEPT;
496                 }
497         
498         case BUTTON_RIGHT: // Intercept the right-button click to short-circut the pop-up menu
499                 return Smach::RESULT_ACCEPT;
500         
501         default:        
502                 return Smach::RESULT_OK;
503         }
504 }
505
506 #define SIMILAR_TANGENT_THRESHOLD       (0.2)
507
508 struct debugclass
509 {
510         synfig::String x;
511         debugclass(const synfig::String &x):x(x)
512         {
513 //              synfig::warning(">>>>>>>>>>>>>>>>>>> "+x);
514         }
515         ~debugclass()
516         {
517 //              synfig::warning("<<<<<<<<<<<<<<<<<<< "+x);
518         }
519 };
520
521 struct DepthCounter
522 {
523         int &i;
524         DepthCounter(int &i):i(i) { i++; }
525         ~DepthCounter() { i--; }        
526 };
527
528 Smach::event_result
529 StateDraw_Context::event_stroke(const Smach::event& x)
530 {
531 //      debugclass debugger("StateDraw_Context::event_stroke(const Smach::event& x)");
532                 
533         const EventStroke& event(*reinterpret_cast<const EventStroke*>(&x));
534
535         assert(event.stroke_data);
536
537         get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
538         
539         if(nested==0)
540         {
541                 DirtyTrap dirty_trap(get_work_area());
542                 Smach::event_result result;
543                 result=process_stroke(event.stroke_data,event.width_data,event.modifier&Gdk::CONTROL_MASK || event.modifier&Gdk::BUTTON2_MASK);
544                 process_queue();
545                 return result;
546         }
547         
548         stroke_queue.push_back(pair<StrokeData,WidthData>(event.stroke_data,event.width_data));
549
550         return Smach::RESULT_ACCEPT;    
551 }
552
553 bool
554 StateDraw_Context::process_queue()
555 {
556 //      debugclass debugger("StateDraw_Context::process_queue()");
557         if(nested)
558                 return true;
559         DepthCounter depth_counter(nested);
560         while(!stroke_queue.empty())
561         {
562                 pair<StrokeData,WidthData> front(stroke_queue.front());
563                 process_stroke(front.first,front.second);
564                 stroke_queue.pop_front();
565         }
566         return false;
567 }
568
569 Smach::event_result
570 StateDraw_Context::process_stroke(StrokeData stroke_data, WidthData width_data, bool region_flag)
571 {
572 //      debugclass debugger("StateDraw_Context::process_stroke");
573         DepthCounter depth_counter(nested);
574         
575         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);
576
577
578         // If we aren't using pressure width,
579         // then set all the width to 1
580         if(!get_pressure_width_flag())
581         {
582                 std::list<synfig::Real>::iterator iter;
583                 for(iter=width_data->begin();iter!=width_data->end();++iter)
584                 {
585                         *iter=1.0;
586                 }
587         }
588         
589         //get_work_area()->add_stroke(event.stroke_data,synfigapp::Main::get_foreground_color());
590         //stroke_list.push_back(event.stroke_data);
591         //refresh_ducks();
592                 
593         std::list<synfig::BLinePoint> bline;
594         bool loop_bline_flag(false);
595         
596         //Changed by Adrian - use resident class :)
597         //synfigapp::convert_stroke_to_bline(bline, *event.stroke_data,*event.width_data, synfigapp::Main::get_bline_width());
598         blineconv.width = synfigapp::Main::get_bline_width().units(get_canvas()->rend_desc());
599         
600         if(get_local_error_flag())
601         {
602                 float pw = get_work_area()->get_pw();
603                 float ph = get_work_area()->get_ph();
604                 
605                 blineconv.pixelwidth = sqrt(pw*pw+ph*ph);
606                 blineconv.smoothness = get_lthres();
607         }else
608         {
609                 blineconv.pixelwidth = 1;
610                 blineconv.smoothness = get_gthres();            
611         }
612         
613         blineconv(bline,*stroke_data,*width_data);
614         
615         //Postprocess to require minimum pressure
616         if(get_min_pressure_flag())
617         {
618                 synfigapp::BLineConverter::EnforceMinWidth(bline,get_min_pressure());
619         }
620         
621         // If the start and end points are similar, then make then the same point
622         if(get_auto_loop_flag())
623         if(bline.size()>2&&(bline.front().get_vertex()-bline.back().get_vertex()).mag()<=radius)
624         {
625                 loop_bline_flag=true;
626                 Vector tangent;
627                 Real width(0);
628
629                 while(bline.size()>2&&(bline.front().get_vertex()-bline.back().get_vertex()).mag()<=radius)
630                 {
631                         tangent=bline.back().get_tangent1();
632                         width=bline.back().get_width();
633                         bline.pop_back();
634                 }
635                 
636                 if(abs(bline.front().get_tangent1().norm()*tangent.norm().perp())>SIMILAR_TANGENT_THRESHOLD)
637                 {
638                         // If the tangents are not similar, then
639                         // split the tangents
640                         bline.front().set_split_tangent_flag(true);
641                         bline.front().set_tangent1(tangent);
642                 }
643                 else
644                 {
645                         // If the tangents are similar, then set the tangent
646                         // to the average of the two
647                         bline.front().set_tangent((tangent+bline.front().get_tangent1())*0.5f);
648                 }
649                 
650                 // Add the widths of the two points
651                 {       
652                         Real width(bline.front().get_width()+width);
653                         width=width<=1?width:1;
654                         bline.front().set_width(width);
655                 }
656         }
657
658         // If the bline only has once blinepoint, then there is nothing to do.
659         if(bline.size()<=1)
660                 return Smach::RESULT_OK;
661
662         if(region_flag)
663                 return new_region(bline,radius);
664
665         return new_bline(bline,loop_bline_flag,radius);
666 }
667
668 Smach::event_result
669 StateDraw_Context::new_bline(std::list<synfig::BLinePoint> bline,bool loop_bline_flag,float radius)
670 {
671         // Create the action group
672         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Sketch BLine"));
673
674         //ValueNode_BLine::Handle value_node(ValueNode_BLine::create(synfig::ValueBase(bline,loop_bline_flag)));
675         ValueNode_BLine::Handle value_node;
676
677         {
678                 std::list<synfig::BLinePoint> trans_bline;
679                 std::list<synfig::BLinePoint>::iterator iter;
680                 const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
681                 
682                 for(iter=bline.begin();iter!=bline.end();++iter)
683                 {
684                         BLinePoint bline_point(*iter);
685                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
686                         
687                         bline_point.set_tangent1(
688                                 transform.unperform(
689                                         bline_point.get_tangent1()+bline_point.get_vertex()
690                                 ) -new_vertex
691                         );
692
693                         bline_point.set_tangent2(
694                                 transform.unperform(
695                                         bline_point.get_tangent2()+bline_point.get_vertex()
696                                 ) -new_vertex
697                         );
698                         
699                         bline_point.set_vertex(new_vertex);
700                         
701                         trans_bline.push_back(bline_point);
702                 }
703                 value_node=ValueNode_BLine::create(synfig::ValueBase(trans_bline,loop_bline_flag));
704         }
705
706         // Find any ducks at the start or end that we might attach to
707         // (If we aren't a loop)
708         if(!loop_bline_flag && get_auto_connect_flag())
709         {
710                 
711                 etl::handle<Duck> start_duck(get_work_area()->find_duck(bline.front().get_vertex(),radius,Duck::TYPE_VERTEX));
712                 etl::handle<Duck> finish_duck(get_work_area()->find_duck(bline.back().get_vertex(),radius,Duck::TYPE_VERTEX));
713                 
714                 if(start_duck)do
715                 {
716                         synfigapp::ValueDesc value_desc(start_duck->get_value_desc());
717                         if(!value_desc)
718                         {
719                                 break;
720                         }
721
722                         ValueNode_BLine::Handle value_node_bline;
723
724                         if(value_desc.parent_is_value_node())
725                         {
726                                 value_node_bline=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_parent_value_node());
727                         }
728                         if(value_node_bline)
729                         {
730                                 if(value_desc.get_index()==0)
731                                 {
732                                         // SPECIAL CASE -- EXTENSION
733                                         // We need to reverse the BLine first.
734                                         bline.pop_front();
735                                         reverse_bline(bline);
736                                         return extend_bline_from_begin(value_node_bline,bline);                                 
737                                 }
738                                 if(value_desc.get_index()==value_node_bline->link_count()-1)
739                                 {
740                                         // SPECIAL CASE -- EXTENSION
741                                         bline.pop_front();
742                                         return extend_bline_from_end(value_node_bline,bline);
743                                 }
744                         }
745
746                         switch(value_desc.get_value_type())
747                         {
748                         case synfig::ValueBase::TYPE_BLINEPOINT:
749                                 //get_canvas_interface()->auto_export(value_desc);
750                                 //value_node->list.front().value_node=value_desc.get_value_node();
751                                 
752                                 value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(value_desc.get_value_node()),0);
753                                 //break;
754                         case synfig::ValueBase::TYPE_VECTOR:
755                                 get_canvas_interface()->auto_export(value_desc);
756                                 LinkableValueNode::Handle::cast_dynamic(value_node->list.front().value_node)->set_link(0,value_desc.get_value_node());
757                                 break;
758                         default:
759                                 break;
760                         }
761                 }while(0);
762                 
763                 if(finish_duck)do
764                 {
765                         synfigapp::ValueDesc value_desc(finish_duck->get_value_desc());
766                         if(!value_desc)
767                         {
768                                 break;
769                         }
770
771                         ValueNode_BLine::Handle value_node_bline;
772
773                         if(value_desc.parent_is_value_node())
774                                 value_node_bline=ValueNode_BLine::Handle::cast_dynamic(value_desc.get_parent_value_node());
775                         if(value_node_bline)
776                         {
777                                 if(value_desc.get_index()==0)
778                                 {
779                                         // SPECIAL CASE -- EXTENSION
780                                         bline.pop_back();
781                                         return extend_bline_from_begin(value_node_bline,bline);                                 
782                                 }
783                                 if(value_desc.get_index()==value_node_bline->link_count()-1)
784                                 {
785                                         // SPECIAL CASE -- EXTENSION
786                                         // We need to reverse the BLine first.
787                                         bline.pop_back();
788                                         reverse_bline(bline);
789                                         return extend_bline_from_end(value_node_bline,bline);
790                                 }
791                         }
792
793                         switch(value_desc.get_value_type())
794                         {
795                         case synfig::ValueBase::TYPE_BLINEPOINT:
796                                 //get_canvas_interface()->auto_export(value_desc);
797                                 //value_node->list.back().value_node=value_desc.get_value_node();
798
799                                 value_desc=synfigapp::ValueDesc(LinkableValueNode::Handle::cast_dynamic(value_desc.get_value_node()),0);
800                                 //break;
801                         case synfig::ValueBase::TYPE_VECTOR:
802                                 get_canvas_interface()->auto_export(value_desc);
803                                 LinkableValueNode::Handle::cast_dynamic(value_node->list.back().value_node)->set_link(0,value_desc.get_value_node());
804                                 break;
805                         default:
806                                 break;
807                         }
808                         
809                 }while(0);
810         }
811         
812         // Create the layer
813         {
814                 Layer::Handle layer;
815                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
816                 int depth(0);
817                 
818                 // we are temporarily using the layer to hold something
819                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
820                 if(layer)
821                 {
822                         depth=layer->get_depth();
823                         canvas=layer->get_canvas();
824                 }
825                 
826                 //int number(synfig::UniqueID().get_uid());
827                 
828                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
829                 
830                 if(get_region_only_flag())
831                         layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
832                 else
833                         layer=get_canvas_interface()->add_layer_to("outline",canvas,depth);
834                         
835                 if(get_feather())
836                 {
837                         layer->set_param("feather",get_feather());
838                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
839                 }
840                 assert(layer);
841                 //layer->set_description(strprintf("Stroke %d",number));
842                 //get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
843                 
844                 
845                 
846                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
847                 
848                 assert(action);
849                 
850                 action->set_param("canvas",get_canvas());                       
851                 action->set_param("canvas_interface",get_canvas_interface());                   
852                 action->set_param("layer",layer);                       
853                 if(!action->set_param("param",String("bline")))
854                         synfig::error("LayerParamConnect didn't like \"param\"");
855                 if(!action->set_param("value_node",ValueNode::Handle(value_node)))
856                         synfig::error("LayerParamConnect didn't like \"value_node\"");
857                 
858                 if(!get_canvas_interface()->get_instance()->perform_action(action))
859                 {
860                         get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
861                         group.cancel();
862                         //refresh_ducks();
863                         return Smach::RESULT_ERROR;
864                 }
865                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
866                 //refresh_ducks();
867         }
868         
869         last_stroke=value_node;
870         return Smach::RESULT_ACCEPT;
871 }
872
873 Smach::event_result
874 StateDraw_Context::new_region(std::list<synfig::BLinePoint> bline, synfig::Real radius)
875 {
876         // Create the action group
877         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Define Region"));
878         
879         std::list<synfigapp::ValueDesc> vertex_list;
880         
881         // First we need to come up with a rough list of
882         // BLinePoints that we are going to be using to
883         // define our region. 
884         {
885                 std::list<synfig::BLinePoint>::iterator iter;
886                 for(iter=bline.begin();iter!=bline.end();++iter)
887                 {
888                         etl::handle<Duck> duck(get_work_area()->find_duck(iter->get_vertex(),0,Duck::TYPE_VERTEX));
889                         
890                         if(!duck)
891                         {
892                                 synfig::info(__FILE__":%d: Nothing to enclose!",__LINE__);                              
893                                 return Smach::RESULT_OK;                
894                         }
895                         
896                         
897                         assert(duck->get_type()==Duck::TYPE_VERTEX);
898                         
899                         synfigapp::ValueDesc value_desc(duck->get_value_desc());
900                         
901                         if(!value_desc)
902                         {
903                                 synfig::info(__FILE__":%d: Got a hit, but no ValueDesc on this duck",__LINE__);                         
904                                 continue;
905                         }
906                         
907                         switch(value_desc.get_value_type())
908                         {
909                         case synfig::ValueBase::TYPE_BLINEPOINT:
910                                 //if(vertex_list.empty() || value_desc!=vertex_list.back())
911                                 vertex_list.push_back(value_desc);
912                                 assert(vertex_list.back().is_valid());
913                         
914                                 break;
915                         default:
916                                 break;
917                         }
918                 }
919         }
920         
921         if(vertex_list.size()<=2)
922         {
923                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
924                 return Smach::RESULT_OK;                
925         }
926
927         assert(vertex_list.back().is_valid());
928         
929         // Remove any duplicates
930         {
931         }
932         
933         // Now we need to clean the list of vertices up
934         // a bit. This includes inserting missing vertices
935         // and removing extraneous ones.
936         // We can do this in multiple passes.
937         int i=0;
938         for(bool done=false;!done && i<30;i++)
939         {
940                 // Set done to "true" for now. If
941                 // any updates are performed, we will
942                 // change it back to false.
943                 done=true;
944                 
945                 std::list<synfigapp::ValueDesc>::iterator prev,iter,next;
946                 prev=vertex_list.end();prev--;  // Set prev to the last ValueDesc
947                 next=vertex_list.begin();
948                 iter=next++; // Set iter to the first value desc, and next to the second
949                 
950                 for(;iter!=vertex_list.end();prev=iter,iter=next++)
951                 {
952                         synfigapp::ValueDesc value_prev(*prev);
953                         synfigapp::ValueDesc value_desc(*iter);
954                         synfigapp::ValueDesc value_next((next==vertex_list.end())?vertex_list.front():*next);
955                         
956                         assert(value_desc.is_valid());
957                         assert(value_next.is_valid());
958                         assert(value_prev.is_valid());
959                         
960                         //synfig::info("-------");
961                         //synfig::info(__FILE__":%d: value_prev 0x%08X:%d",__LINE__,value_prev.get_parent_value_node().get(),value_prev.get_index());
962                         //synfig::info(__FILE__":%d: value_desc 0x%08X:%d",__LINE__,value_desc.get_parent_value_node().get(),value_desc.get_index());
963                         //synfig::info(__FILE__":%d: value_next 0x%08X:%d",__LINE__,value_next.get_parent_value_node().get(),value_next.get_index());
964
965                         /*
966                         if(value_prev.parent_is_value_node() && value_desc.parent_is_value_node() && value_next.parent_is_value_node())
967                         {
968                                 // Remove random extraneous vertices
969                                 if(value_prev.get_parent_value_node()==value_next.get_parent_value_node() &&
970                                         value_prev.get_parent_value_node()!=value_desc.get_parent_value_node())
971                                 {
972                                         DEBUGPOINT();
973                                         vertex_list.erase(iter);
974                                         done=false;
975                                         break;
976                                 }
977                         }       
978                         */
979                         
980                         // Remove duplicate vertices
981                         if(value_prev.get_value_node()==value_desc.get_value_node()
982                                 || value_desc.get_value_node()==value_next.get_value_node())
983                         {
984                                 DEBUGPOINT();
985                                 vertex_list.erase(iter);
986                                 done=false;
987                                 break;
988                         }
989                         if(value_prev.get_value_node()==value_next.get_value_node())
990                         {
991                                 DEBUGPOINT();
992                                 vertex_list.erase(prev);
993                                 done=false;
994                                 break;
995                         }
996                         
997                         if(value_desc.parent_is_value_node() && value_next.parent_is_value_node())
998                         if(value_desc.get_parent_value_node()==value_next.get_parent_value_node() && (next!=vertex_list.end()))
999                         {
1000                                 // Fill in missing vertices
1001                                 if(value_desc.get_index()<value_next.get_index()-1)
1002                                 {
1003                                         DEBUGPOINT();
1004                                         vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()+1));
1005                                         done=false;
1006                                         break;
1007                                 }
1008                                 if(value_next.get_index()<value_desc.get_index()-1)
1009                                 {
1010                                         DEBUGPOINT();
1011                                         vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_next.get_index()+1));
1012                                         done=false;
1013                                         break;
1014                                 }
1015                         }
1016                         
1017                         // Ensure that connections
1018                         // between blines are properly
1019                         // connected
1020                         if(value_desc.parent_is_value_node() && value_next.parent_is_value_node())
1021                         if(value_desc.get_parent_value_node()!=value_next.get_parent_value_node() &&
1022                                 value_desc.get_value_node()!=value_next.get_value_node())
1023                         {
1024                                 BLinePoint vertex(value_desc.get_value(get_time()).get(BLinePoint()));
1025                                 BLinePoint vertex_next(value_next.get_value(get_time()).get(BLinePoint()));
1026
1027                                 //synfig::info("--------");
1028                                 //synfig::info(__FILE__":%d: vertex: [%f, %f]",__LINE__,vertex.get_vertex()[0],vertex.get_vertex()[1]);
1029                                 //synfig::info(__FILE__":%d: vertex_next: [%f, %f]",__LINE__,vertex_next.get_vertex()[0],vertex_next.get_vertex()[1]);
1030                                 
1031                                 if((vertex.get_vertex()-vertex_next.get_vertex()).mag_squared()<radius*radius)
1032                                 {
1033                                         DEBUGPOINT();
1034                                         ValueNode_Composite::Handle value_node;
1035                                         ValueNode_Composite::Handle value_node_next;
1036                                         value_node=ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node().clone());
1037                                         value_node_next=ValueNode_Composite::Handle::cast_dynamic(value_next.get_value_node().clone());
1038                                         if(!value_node || !value_node_next)
1039                                         {
1040                                                 synfig::info(__FILE__":%d: Unable to properly connect blines.",__LINE__);
1041                                                 continue;
1042                                         }
1043                                         DEBUGPOINT();
1044                                         value_node->set_link(5,value_node_next->get_link(5));
1045                                         value_node->set_link(3,ValueNode_Const::create(true));
1046
1047                                         get_canvas_interface()->auto_export(value_node);
1048                                         assert(value_node->is_exported());
1049                                         *iter=synfigapp::ValueDesc(get_canvas(),value_node->get_id());
1050                                         vertex_list.erase(next);
1051                                         done=false;
1052                                         break;                                  
1053                                 }
1054                                 else
1055                                 {
1056                                         DEBUGPOINT();
1057                                         bool positive_trend(value_desc.get_index()>value_prev.get_index());
1058                                         
1059                                         if(!positive_trend && value_desc.get_index()>0)
1060                                         {
1061                                                 DEBUGPOINT();
1062                                                 vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()-1));
1063                                                 done=false;
1064                                                 break;                                  
1065                                         }
1066                                         if(positive_trend && value_desc.get_index()<LinkableValueNode::Handle::cast_static(value_desc.get_value_node())->link_count()-1)
1067                                         {
1068                                                 DEBUGPOINT();
1069                                                 vertex_list.insert(next,synfigapp::ValueDesc(value_desc.get_parent_value_node(),value_desc.get_index()+1));
1070                                                 done=false;
1071                                                 break;                                  
1072                                         }
1073                                 }
1074                                 
1075                         }
1076                 }
1077         }
1078
1079         if(vertex_list.size()<=2)
1080         {
1081                 synfig::info(__FILE__":%d: Vertex list too small to make region.",__LINE__);
1082                 return Smach::RESULT_OK;                
1083         }
1084         
1085         ValueNode_BLine::Handle value_node_bline;
1086
1087         // Now we need to test for the trivial case,
1088         // which is where all of the vertices
1089         // come from one BLine. 
1090         if(vertex_list.front().parent_is_linkable_value_node())
1091         {
1092                 bool trivial_case(true);
1093                 ValueNode::Handle trivial_case_value_node;
1094                 
1095                 trivial_case_value_node=vertex_list.front().get_parent_value_node();
1096                 
1097                 std::list<synfigapp::ValueDesc>::iterator iter;
1098                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1099                 {
1100                         if(trivial_case_value_node!=iter->get_parent_value_node())
1101                         {
1102                                 trivial_case=false;
1103                                 break;
1104                         }
1105                 }
1106                 if(trivial_case)
1107                         value_node_bline=ValueNode_BLine::Handle::cast_dynamic(trivial_case_value_node);
1108         }
1109         
1110         // If we aren't the trivial case,
1111         // then go ahead and create the new
1112         // BLine value node
1113         if(!value_node_bline)
1114         {
1115                 value_node_bline=ValueNode_BLine::create();
1116
1117                 std::list<synfigapp::ValueDesc>::iterator iter;         
1118                 for(iter=vertex_list.begin();iter!=vertex_list.end();++iter)
1119                 {
1120                         // Ensure that the vertex is exported.
1121                         get_canvas_interface()->auto_export(*iter);     
1122                         
1123                         value_node_bline->add(iter->get_value_node());  
1124                         //value_node_bline->add(ValueNode_BLine::ListEntry(iter->get_value_node()));    
1125                 }
1126                 
1127                 value_node_bline->set_loop(true);
1128         }
1129
1130         get_canvas_interface()->auto_export(value_node_bline);                  
1131
1132         // Now we create the region layer
1133         // Create the layer
1134         {
1135                 Layer::Handle layer;
1136                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
1137                 int depth(0);
1138                 
1139                 // we are temporarily using the layer to hold something
1140                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
1141                 if(layer)
1142                 {
1143                         depth=layer->get_depth();
1144                         canvas=layer->get_canvas();
1145                 }
1146                 
1147                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1148                 
1149                 layer=get_canvas_interface()->add_layer_to("region",canvas,depth);
1150                 assert(layer);
1151                 layer->set_param("color",synfigapp::Main::get_background_color());
1152                 if(get_feather())
1153                 {
1154                         layer->set_param("feather",get_feather());
1155                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
1156                 }
1157                 get_canvas_interface()->signal_layer_param_changed()(layer,"color");
1158
1159                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1160                 
1161                 assert(action);
1162                 
1163                 action->set_param("canvas",get_canvas());                       
1164                 action->set_param("canvas_interface",get_canvas_interface());                   
1165                 action->set_param("layer",layer);                       
1166                 if(!action->set_param("param",String("bline")))
1167                         synfig::error("LayerParamConnect didn't like \"param\"");
1168                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
1169                         synfig::error("LayerParamConnect didn't like \"value_node\"");
1170                 
1171                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1172                 {
1173                         get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1174                         group.cancel();
1175                         return Smach::RESULT_ERROR;
1176                 }
1177                 get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1178         }
1179         
1180         return Smach::RESULT_ACCEPT;
1181 }
1182
1183 void
1184 StateDraw_Context::refresh_ducks()
1185 {
1186         get_canvas_view()->queue_rebuild_ducks();
1187 /*
1188         get_work_area()->clear_ducks();
1189         
1190         
1191         std::list< etl::smart_ptr<std::list<synfig::Point> > >::iterator iter;
1192         
1193         for(iter=stroke_list.begin();iter!=stroke_list.end();++iter)
1194         {
1195                 get_work_area()->add_stroke(*iter);
1196         }
1197         
1198         get_work_area()->queue_draw();                  
1199 */
1200 }
1201
1202
1203 Smach::event_result
1204 StateDraw_Context::extend_bline_from_begin(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline)
1205 {
1206         // Create the action group
1207         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1208         
1209         std::list<synfig::BLinePoint>::reverse_iterator iter;
1210         iter=bline.rbegin();
1211         for(;!(iter==bline.rend());++iter)
1212         {
1213                 //iter->reverse();
1214                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1215
1216                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1217                 
1218                 assert(action);
1219                 synfigapp::ValueDesc value_desc(value_node,0);
1220                 
1221                 action->set_param("canvas",get_canvas());                       
1222                 action->set_param("canvas_interface",get_canvas_interface());                   
1223                 action->set_param("value_desc",value_desc);
1224                 if(!action->set_param("item",ValueNode::Handle(composite)))
1225                         synfig::error("ACTION didn't like \"item\"");
1226                 
1227                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1228                 {
1229                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1230                         group.cancel();
1231                         //refresh_ducks();
1232                         return Smach::RESULT_ERROR;
1233                 }               
1234         }
1235         last_stroke=value_node;
1236         return Smach::RESULT_ACCEPT;
1237 }
1238
1239 Smach::event_result
1240 StateDraw_Context::extend_bline_from_end(ValueNode_BLine::Handle value_node,std::list<synfig::BLinePoint> bline)
1241 {
1242         // Create the action group
1243         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Extend BLine"));
1244
1245         std::list<synfig::BLinePoint>::iterator iter;
1246         iter=bline.begin();
1247         for(;iter!=bline.end();++iter)
1248         {
1249                 ValueNode_Composite::Handle composite(ValueNode_Composite::create(*iter));
1250
1251                 synfigapp::Action::Handle action(synfigapp::Action::create("value_node_dynamic_list_insert"));
1252                 
1253                 assert(action);
1254                 synfigapp::ValueDesc value_desc(value_node,value_node->link_count());
1255                 
1256                 action->set_param("canvas",get_canvas());                       
1257                 action->set_param("canvas_interface",get_canvas_interface());                   
1258                 action->set_param("value_desc",value_desc);
1259                 if(!action->set_param("item",ValueNode::Handle(composite)))
1260                         synfig::error("ACTION didn't like \"item\"");
1261                 
1262                 if(!get_canvas_interface()->get_instance()->perform_action(action))
1263                 {
1264                         get_canvas_view()->get_ui_interface()->error(_("Unable to insert item"));
1265                         group.cancel();
1266                         //refresh_ducks();
1267                         return Smach::RESULT_ERROR;
1268                 }               
1269         }
1270         last_stroke=value_node;
1271         return Smach::RESULT_ACCEPT;
1272 }
1273
1274 void
1275 StateDraw_Context::reverse_bline(std::list<synfig::BLinePoint> &bline)
1276 {
1277         int i;
1278         
1279         std::list<synfig::BLinePoint>::iterator iter,eiter;
1280         iter=bline.begin();
1281         eiter=bline.end();
1282         eiter--;
1283         for(i=0;i<(int)bline.size()/2;++iter,--eiter,i++)
1284         {
1285                 iter_swap(iter,eiter);
1286                 iter->reverse();
1287                 eiter->reverse();
1288         }
1289 }
1290
1291 void
1292 StateDraw_Context::fill_last_stroke()
1293 {
1294         if(!last_stroke)
1295                 return;
1296         
1297         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Fill Stroke"));
1298
1299         Layer::Handle layer;
1300         
1301         get_canvas_interface()->auto_export(last_stroke);                       
1302
1303         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
1304         
1305         layer=get_canvas_interface()->add_layer("region");
1306         assert(layer);
1307         layer->set_param("color",synfigapp::Main::get_background_color());
1308
1309         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
1310         
1311         assert(action);
1312         
1313         action->set_param("canvas",get_canvas());                       
1314         action->set_param("canvas_interface",get_canvas_interface());                   
1315         action->set_param("layer",layer);                       
1316         if(!action->set_param("param",String("segment_list")))
1317                 synfig::error("LayerParamConnect didn't like \"param\"");
1318         if(!action->set_param("value_node",ValueNode::Handle(last_stroke)))
1319                 synfig::error("LayerParamConnect didn't like \"value_node\"");
1320         
1321         if(!get_canvas_interface()->get_instance()->perform_action(action))
1322         {
1323                 get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
1324                 group.cancel();
1325                 return;
1326         }
1327         get_canvas_view()->get_selection_manager()->set_selected_layer(layer);
1328 }