Build rectanglular blines in the same handedness as all the other shapes.
[synfig.git] / synfig-studio / trunk / src / gtkmm / state_bline.cpp
1 /* === S Y N F I G ========================================================= */
2 /*!     \file state_bline.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, 2008 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_bline.h"
39 #include "canvasview.h"
40 #include "workarea.h"
41 #include "app.h"
42 #include <synfig/valuenode_bline.h>
43 #include <ETL/hermite>
44 #include <ETL/calculus>
45 #include <utility>
46 #include "event_mouse.h"
47 #include "event_layerclick.h"
48 #include "toolbox.h"
49 #include "dialog_tooloptions.h"
50 #include <gtkmm/spinbutton.h>
51 #include <synfig/transform.h>
52 #include <synfigapp/main.h>
53
54 #include "general.h"
55
56 #endif
57
58 /* === U S I N G =========================================================== */
59
60 using namespace std;
61 using namespace etl;
62 using namespace synfig;
63 using namespace studio;
64
65 /* === M A C R O S ========================================================= */
66
67 // if defined, show the first duck as green while drawing
68 #define DISTINGUISH_FIRST_DUCK
69
70 /* === G L O B A L S ======================================================= */
71
72 StateBLine studio::state_bline;
73
74 /* === C L A S S E S & S T R U C T S ======================================= */
75
76 class studio::StateBLine_Context : public sigc::trackable
77 {
78         etl::handle<CanvasView> canvas_view_;
79         CanvasView::IsWorking is_working;
80
81         bool prev_table_status;
82         bool loop_;
83         bool prev_workarea_layer_status_;
84
85         int depth;
86         Canvas::Handle canvas;
87
88         Gtk::Menu menu;
89
90         Duckmatic::Push duckmatic_push;
91
92         etl::handle<Duck> curr_duck;
93
94         etl::handle<Duck> next_duck;
95
96         std::list<synfig::ValueNode_Const::Handle> bline_point_list;
97         synfigapp::Settings& settings;
98
99         bool on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
100         bool on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
101         bool on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
102
103
104         void popup_handle_menu(synfig::ValueNode_Const::Handle value_node);
105         void popup_vertex_menu(synfig::ValueNode_Const::Handle value_node);
106         void popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node);
107
108         void bline_detach_handle(synfig::ValueNode_Const::Handle value_node);
109         void bline_attach_handle(synfig::ValueNode_Const::Handle value_node);
110         void bline_delete_vertex(synfig::ValueNode_Const::Handle value_node);
111         void bline_insert_vertex(synfig::ValueNode_Const::Handle value_node,float origin=0.5);
112         void loop_bline();
113         void unloop_bline();
114
115         void refresh_ducks(bool x=true);
116
117         Gtk::Table options_table;
118         Gtk::Entry entry_id;
119         Gtk::CheckButton checkbutton_layer_region;
120         Gtk::CheckButton checkbutton_layer_outline;
121         Gtk::CheckButton checkbutton_layer_curve_gradient;
122         Gtk::CheckButton checkbutton_layer_plant;
123         Gtk::CheckButton checkbutton_layer_link_origins;
124         Gtk::CheckButton checkbutton_auto_export;
125         Gtk::Button button_make;
126         Gtk::Button button_clear;
127         Gtk::Adjustment  adj_feather;
128         Gtk::SpinButton  spin_feather;
129
130
131
132 public:
133
134         int layers_to_create()const
135         {
136                 return
137                         get_layer_region_flag() +
138                         get_layer_outline_flag() +
139                         get_layer_curve_gradient_flag() +
140                         get_layer_plant_flag();
141         }
142
143         void sanity_check()
144         {
145                 if(layers_to_create()==0)
146                         set_layer_region_flag(true);
147         }
148
149         bool get_auto_export_flag()const { return checkbutton_auto_export.get_active(); }
150         void set_auto_export_flag(bool x) { return checkbutton_auto_export.set_active(x); }
151
152         bool get_layer_region_flag()const { return checkbutton_layer_region.get_active(); }
153         void set_layer_region_flag(bool x) { return checkbutton_layer_region.set_active(x); }
154
155         bool get_layer_outline_flag()const { return checkbutton_layer_outline.get_active(); }
156         void set_layer_outline_flag(bool x) { return checkbutton_layer_outline.set_active(x); }
157
158         bool get_layer_curve_gradient_flag()const { return checkbutton_layer_curve_gradient.get_active(); }
159         void set_layer_curve_gradient_flag(bool x) { return checkbutton_layer_curve_gradient.set_active(x); }
160
161         bool get_layer_plant_flag()const { return checkbutton_layer_plant.get_active(); }
162         void set_layer_plant_flag(bool x) { return checkbutton_layer_plant.set_active(x); }
163
164         bool get_layer_link_origins_flag()const { return checkbutton_layer_link_origins.get_active(); }
165         void set_layer_link_origins_flag(bool x) { return checkbutton_layer_link_origins.set_active(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         synfig::String get_id()const { return entry_id.get_text(); }
170         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
171
172         Smach::event_result event_stop_handler(const Smach::event& x);
173
174         Smach::event_result event_refresh_handler(const Smach::event& x);
175
176         Smach::event_result event_mouse_click_handler(const Smach::event& x);
177         Smach::event_result event_mouse_release_handler(const Smach::event& x);
178         Smach::event_result event_mouse_motion_handler(const Smach::event& x);
179         Smach::event_result event_refresh_tool_options(const Smach::event& x);
180
181         Smach::event_result event_hijack(const Smach::event& /*x*/) { return Smach::RESULT_ACCEPT; }
182
183         void refresh_tool_options();
184
185         StateBLine_Context(CanvasView* canvas_view);
186
187         ~StateBLine_Context();
188
189         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
190         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
191         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
192         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
193         const synfig::TransformStack& get_transform_stack()const { return canvas_view_->get_curr_transform_stack(); }
194
195         void load_settings();
196         void save_settings();
197         void reset();
198         void increment_id();
199         //void on_user_click(synfig::Point point);
200
201         bool run_();
202         bool run();
203
204         bool egress_on_selection_change;
205         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
206         {
207                 if(egress_on_selection_change)
208                         throw Smach::egress_exception();
209                 return Smach::RESULT_OK;
210         }
211
212 };      // END of class StateBLine_Context
213
214
215 /* === M E T H O D S ======================================================= */
216
217 StateBLine::StateBLine():
218         Smach::state<StateBLine_Context>("bline")
219 {
220         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,         &StateBLine_Context::event_layer_selection_changed_handler));
221         insert(event_def(EVENT_STOP,                                            &StateBLine_Context::event_stop_handler));
222         insert(event_def(EVENT_REFRESH,                                         &StateBLine_Context::event_refresh_handler));
223         insert(event_def(EVENT_REFRESH_DUCKS,                           &StateBLine_Context::event_hijack));
224         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,      &StateBLine_Context::event_mouse_click_handler));
225         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,        &StateBLine_Context::event_mouse_release_handler));
226         insert(event_def(EVENT_WORKAREA_MOUSE_MOTION,           &StateBLine_Context::event_mouse_motion_handler));
227         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,      &StateBLine_Context::event_mouse_motion_handler));
228         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,            &StateBLine_Context::event_refresh_tool_options));
229 }
230
231 StateBLine::~StateBLine()
232 {
233 }
234
235 void
236 StateBLine_Context::load_settings()
237 {
238         String value;
239
240         if(settings.get_value("bline.layer_region",value) && value=="0")
241                 set_layer_region_flag(false);
242         else
243                 set_layer_region_flag(true);
244
245         if(settings.get_value("bline.layer_outline",value) && value=="0")
246                 set_layer_outline_flag(false);
247         else
248                 set_layer_outline_flag(true);
249
250         if(settings.get_value("bline.layer_curve_gradient",value) && value=="1")
251                 set_layer_curve_gradient_flag(true);
252         else
253                 set_layer_curve_gradient_flag(false);
254
255         if(settings.get_value("bline.layer_plant",value) && value=="1")
256                 set_layer_plant_flag(true);
257         else
258                 set_layer_plant_flag(false);
259
260         if(settings.get_value("bline.layer_link_origins",value) && value=="0")
261                 set_layer_link_origins_flag(false);
262         else
263                 set_layer_link_origins_flag(true);
264
265         if(settings.get_value("bline.auto_export",value) && value=="1")
266                 set_auto_export_flag(true);
267         else
268                 set_auto_export_flag(false);
269
270         if(settings.get_value("bline.id",value))
271                 set_id(value);
272         else
273                 set_id("NewBLine");
274
275         if(settings.get_value("bline.feather",value))
276         {
277                 Real n = atof(value.c_str());
278                 set_feather(n);
279         }
280
281         sanity_check();
282 }
283
284 void
285 StateBLine_Context::save_settings()
286 {
287         sanity_check();
288         settings.set_value("bline.layer_outline",get_layer_outline_flag()?"1":"0");
289         settings.set_value("bline.layer_region",get_layer_region_flag()?"1":"0");
290         settings.set_value("bline.layer_curve_gradient",get_layer_curve_gradient_flag()?"1":"0");
291         settings.set_value("bline.layer_plant",get_layer_plant_flag()?"1":"0");
292         settings.set_value("bline.layer_link_origins",get_layer_link_origins_flag()?"1":"0");
293         settings.set_value("bline.auto_export",get_auto_export_flag()?"1":"0");
294         settings.set_value("bline.id",get_id().c_str());
295         settings.set_value("bline.feather",strprintf("%f",get_feather()));
296 }
297
298 void
299 StateBLine_Context::reset()
300 {
301         loop_=false;
302         bline_point_list.clear();
303         refresh_ducks();
304 }
305
306 void
307 StateBLine_Context::increment_id()
308 {
309         String id(get_id());
310         int number=1;
311         int digits=0;
312
313         if(id.empty())
314                 id="NewBLine";
315
316         // If there is a number
317         // already at the end of the
318         // id, then remove it.
319         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
320         {
321                 // figure out how many digits it is
322                 for (digits = 0;
323                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
324                          digits++)
325                         ;
326
327                 String str_number;
328                 str_number=String(id,id.size()-digits,id.size());
329                 id=String(id,0,id.size()-digits);
330                 // synfig::info("---------------- \"%s\"",str_number.c_str());
331
332                 number=atoi(str_number.c_str());
333         }
334         else
335         {
336                 number=1;
337                 digits=3;
338         }
339
340         number++;
341
342         // Add the number back onto the id
343         {
344                 const String format(strprintf("%%0%dd",digits));
345                 id+=strprintf(format.c_str(),number);
346         }
347
348         // Set the ID
349         set_id(id);
350 }
351
352
353 StateBLine_Context::StateBLine_Context(CanvasView* canvas_view):
354         canvas_view_(canvas_view),
355         is_working(*canvas_view),
356         loop_(false),
357         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
358         duckmatic_push(get_work_area()),
359         settings(synfigapp::Main::get_selected_input_device()->settings()),
360         entry_id(),
361         checkbutton_layer_region(_("Create Region BLine")),
362         checkbutton_layer_outline(_("Create Outline BLine")),
363         checkbutton_layer_curve_gradient(_("Create Curve Gradient BLine")),
364         checkbutton_layer_plant(_("Create Plant BLine")),
365         checkbutton_layer_link_origins(_("Link Origins")),
366         checkbutton_auto_export(_("Auto Export")),
367         button_make(_("Make")),
368         button_clear(_("Clear")),
369         adj_feather(0,0,10000,0.01,0.1),
370         spin_feather(adj_feather,0.01,4)
371 {
372         depth=-1;
373         egress_on_selection_change=true;
374         load_settings();
375
376         // Set up the tool options dialog
377         options_table.attach(*manage(new Gtk::Label(_("BLine Tool"))),  0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
378         options_table.attach(entry_id,                                                                  0, 2,  1,  2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
379         options_table.attach(checkbutton_layer_outline,                                 0, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
380         options_table.attach(checkbutton_layer_region,                                  0, 2,  3,  4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
381         options_table.attach(checkbutton_layer_plant,                                   0, 2,  4,  5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
382         options_table.attach(checkbutton_layer_curve_gradient,                  0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
383         options_table.attach(checkbutton_layer_link_origins,                    0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
384         options_table.attach(checkbutton_auto_export,                                   0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
385         options_table.attach(*manage(new Gtk::Label(_("Feather"))),     0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
386         options_table.attach(spin_feather,                                                              1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
387         //options_table.attach(button_make, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
388         //button_make.signal_pressed().connect(sigc::mem_fun(*this,&StateBLine_Context::run));
389         options_table.show_all();
390         refresh_tool_options();
391         App::dialog_tool_options->present();
392
393         // Turn off layer clicking
394         get_work_area()->set_allow_layer_clicks(false);
395
396         // clear out the ducks
397         get_work_area()->clear_ducks();
398
399         // Refresh the work area
400         get_work_area()->queue_draw();
401
402         // Hide the tables if they are showing
403         prev_table_status=get_canvas_view()->tables_are_visible();
404         if(prev_table_status)get_canvas_view()->hide_tables();
405
406         // Disable the time bar
407         get_canvas_view()->set_sensitive_timebar(false);
408
409         // Connect a signal
410         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateBLine_Context::on_user_click));
411         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
412
413         App::toolbox->refresh();
414 }
415
416 void
417 StateBLine_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(_("BLine Tool"));
422         App::dialog_tool_options->set_name("bline");
423
424         App::dialog_tool_options->add_button(
425                 Gtk::StockID("gtk-execute"),
426                 _("Make BLine and/or Region")
427         )->signal_clicked().connect(
428                 sigc::hide_return(sigc::mem_fun(
429                         *this,
430                         &StateBLine_Context::run
431                 ))
432         );
433
434         App::dialog_tool_options->add_button(
435                 Gtk::StockID("gtk-clear"),
436                 _("Clear current BLine")
437         )->signal_clicked().connect(
438                 sigc::mem_fun(
439                         *this,
440                         &StateBLine_Context::reset
441                 )
442         );
443 }
444
445 Smach::event_result
446 StateBLine_Context::event_refresh_tool_options(const Smach::event& /*x*/)
447 {
448         refresh_tool_options();
449         return Smach::RESULT_ACCEPT;
450 }
451
452 StateBLine_Context::~StateBLine_Context()
453 {
454         run();
455
456         save_settings();
457         App::dialog_tool_options->clear();
458
459         get_canvas_view()->work_area->reset_cursor();
460
461         // Restore layer clicking
462         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
463
464         // Enable the time bar
465         get_canvas_view()->set_sensitive_timebar(true);
466
467         // Bring back the tables if they were out before
468         if(prev_table_status)get_canvas_view()->show_tables();
469
470 //      get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
471
472         // Refresh the work area
473         get_work_area()->queue_draw();
474
475         App::toolbox->refresh();
476 }
477
478 Smach::event_result
479 StateBLine_Context::event_stop_handler(const Smach::event& /*x*/)
480 {
481 //      synfig::info("STATE RotoBLine: Received Stop Event");
482 //      run();
483         reset();
484 //      throw Smach::egress_exception();
485 //      get_canvas_view()->get_smach().pop_state();
486         return Smach::RESULT_ACCEPT;
487 }
488
489 Smach::event_result
490 StateBLine_Context::event_refresh_handler(const Smach::event& /*x*/)
491 {
492 //      synfig::info("STATE RotoBLine: Received Refresh Event");
493         refresh_ducks();
494         return Smach::RESULT_ACCEPT;
495 }
496
497 bool
498 StateBLine_Context::run()
499 {
500         sanity_check();
501
502         String err;
503         bool success(false);
504         for(int i=5;i>0 && !success;i--)try
505         {
506                 success=run_();
507         }
508         catch(String s)
509         {
510                 err=s;
511         }
512         if(!success && !err.empty())
513         {
514                 get_canvas_view()->get_ui_interface()->error(err);
515         }
516         return success;
517 }
518
519 bool
520 StateBLine_Context::run_()
521 {
522         curr_duck=0;
523         next_duck=0;
524
525         // Now we need to generate it
526
527         if(bline_point_list.empty())
528         {
529                 return false;
530         }
531         if(bline_point_list.size()<2)
532         {
533                 //get_canvas_view()->get_ui_interface()->error(_("You need at least two (2) points to create a BLine"));
534                 return false;
535         }
536
537         do
538         {
539
540                 // Create the action group
541                 synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New BLine"));
542
543                 std::vector<BLinePoint> new_list;
544                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
545                 const synfig::TransformStack& transform(get_transform_stack());
546
547                 for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
548                 {
549                         BLinePoint bline_point((*iter)->get_value().get(BLinePoint()));
550                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
551
552                         bline_point.set_tangent1(
553                                 transform.unperform(
554                                         bline_point.get_tangent1()+bline_point.get_vertex()
555                                 ) -new_vertex
556                         );
557
558                         bline_point.set_tangent2(
559                                 transform.unperform(
560                                         bline_point.get_tangent2()+bline_point.get_vertex()
561                                 ) -new_vertex
562                         );
563
564                         bline_point.set_vertex(new_vertex);
565
566                         new_list.push_back(bline_point);
567                 }
568
569                 ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
570                 assert(value_node_bline);
571
572                 ValueNode_Const::Handle value_node_origin(ValueNode_Const::create(Vector()));
573                 assert(value_node_origin);
574
575                 // Set the looping flag
576                 value_node_bline->set_loop(loop_);
577
578                 // Add the BLine to the canvas
579                 if(get_auto_export_flag() && !get_canvas_interface()->add_value_node(value_node_bline,get_id()))
580                 {
581                         //get_canvas_view()->get_ui_interface()->error(_("Unable to add value node"));
582                         group.cancel();
583                         increment_id();
584                         throw String(_("Unable to add value node"));
585                         return false;
586                 }
587
588                 Layer::Handle layer;
589
590                 // we are temporarily using the layer to hold something
591                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
592
593                 if(layer)
594                 {
595                         if(depth<0)
596                                 depth=layer->get_depth();
597                         if(!canvas)
598                                 canvas=layer->get_canvas();
599                 }
600                 else
601                         depth=0;
602
603                 if(!canvas)
604                         canvas=get_canvas_view()->get_canvas();
605
606                 value_node_bline->set_member_canvas(canvas);
607
608                 synfigapp::SelectionManager::LayerList layer_selection;
609                 if (!getenv("SYNFIG_TOOLS_CLEAR_SELECTION"))
610                         layer_selection = get_canvas_view()->get_selection_manager()->get_selected_layers();
611
612                 // count how many layers we're going to be creating
613                 int layers_to_create = this->layers_to_create();
614
615                 ///////////////////////////////////////////////////////////////////////////
616                 //   C U R V E   G R A D I E N T
617                 ///////////////////////////////////////////////////////////////////////////
618
619                 if(get_layer_curve_gradient_flag())
620                 {
621                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
622
623                         Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
624                         assert(layer);
625                         layer_selection.push_back(layer);
626                         layer->set_description(get_id()+_(" Gradient"));
627                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
628
629                         {
630                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
631                                 assert(action);
632
633                                 action->set_param("canvas",get_canvas());
634                                 action->set_param("canvas_interface",get_canvas_interface());
635                                 action->set_param("layer",layer);
636                                 if(!action->set_param("param",String("bline")))
637                                         synfig::error("LayerParamConnect didn't like \"param\"");
638                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
639                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
640
641                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
642                                 {
643                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
644                                         group.cancel();
645                                         throw String(_("Unable to create Gradient layer"));
646                                         return false;
647                                 }
648                         }
649
650                         // only link the curve gradient's origin parameter if the option is selected and we're creating more than one layer
651                         if (get_layer_link_origins_flag() && layers_to_create > 1)
652                         {
653                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
654                                 assert(action);
655
656                                 action->set_param("canvas",get_canvas());
657                                 action->set_param("canvas_interface",get_canvas_interface());
658                                 action->set_param("layer",layer);
659                                 if(!action->set_param("param",String("origin")))
660                                         synfig::error("LayerParamConnect didn't like \"param\"");
661                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
662                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
663
664                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
665                                 {
666                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
667                                         group.cancel();
668                                         throw String(_("Unable to create Gradient layer"));
669                                         return false;
670                                 }
671                         }
672                 }
673
674                 ///////////////////////////////////////////////////////////////////////////
675                 //   P L A N T
676                 ///////////////////////////////////////////////////////////////////////////
677
678                 if(get_layer_plant_flag())
679                 {
680                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
681
682                         Layer::Handle layer(get_canvas_interface()->add_layer_to("plant",canvas,depth));
683                         assert(layer);
684                         layer_selection.push_back(layer);
685                         layer->set_description(get_id()+_(" Plant"));
686                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
687
688                         {
689                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
690                                 assert(action);
691
692                                 action->set_param("canvas",get_canvas());
693                                 action->set_param("canvas_interface",get_canvas_interface());
694                                 action->set_param("layer",layer);
695                                 if(!action->set_param("param",String("bline")))
696                                         synfig::error("LayerParamConnect didn't like \"param\"");
697                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
698                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
699
700                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
701                                 {
702                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
703                                         group.cancel();
704                                         throw String(_("Unable to create Plant layer"));
705                                         return false;
706                                 }
707                         }
708
709                         // only link the plant's origin parameter if the option is selected and we're creating more than one layer
710                         if (get_layer_link_origins_flag() && layers_to_create > 1)
711                         {
712                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
713                                 assert(action);
714
715                                 action->set_param("canvas",get_canvas());
716                                 action->set_param("canvas_interface",get_canvas_interface());
717                                 action->set_param("layer",layer);
718                                 if(!action->set_param("param",String("origin")))
719                                         synfig::error("LayerParamConnect didn't like \"param\"");
720                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
721                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
722
723                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
724                                 {
725                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
726                                         group.cancel();
727                                         throw String(_("Unable to create Plant layer"));
728                                         return false;
729                                 }
730                         }
731                 }
732
733                 ///////////////////////////////////////////////////////////////////////////
734                 //   R E G I O N
735                 ///////////////////////////////////////////////////////////////////////////
736
737                 if(get_layer_region_flag())
738                 {
739                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
740
741                         Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
742                         assert(layer);
743                         layer_selection.push_back(layer);
744                         layer->set_description(get_id()+_(" Region"));
745                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
746
747                         if(get_feather())
748                         {
749                                 layer->set_param("feather",get_feather());
750                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
751                         }
752
753                         if(get_layer_outline_flag())
754                                 layer->set_param("color",synfigapp::Main::get_background_color());
755
756                         // I don't know if it's safe to reuse the same layer_param_connect action, so I'm
757                         // using 2 separate ones.
758                         {
759                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
760                                 assert(action);
761
762                                 action->set_param("canvas",get_canvas());
763                                 action->set_param("canvas_interface",get_canvas_interface());
764                                 action->set_param("layer",layer);
765                                 if(!action->set_param("param",String("bline")))
766                                         synfig::error("LayerParamConnect didn't like \"param\"");
767                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
768                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
769
770                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
771                                 {
772                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
773                                         group.cancel();
774                                         throw String(_("Unable to create Region layer"));
775                                         return false;
776                                 }
777                         }
778
779                         // only link the region's origin parameter if the option is selected and we're creating more than one layer
780                         if (get_layer_link_origins_flag() && layers_to_create > 1)
781                         {
782                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
783                                 assert(action);
784
785                                 action->set_param("canvas",get_canvas());
786                                 action->set_param("canvas_interface",get_canvas_interface());
787                                 action->set_param("layer",layer);
788                                 if(!action->set_param("param",String("origin")))
789                                         synfig::error("LayerParamConnect didn't like \"param\"");
790                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
791                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
792
793                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
794                                 {
795                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
796                                         group.cancel();
797                                         throw String(_("Unable to create Region layer"));
798                                         return false;
799                                 }
800                         }
801                 }
802
803                 ///////////////////////////////////////////////////////////////////////////
804                 //   O U T L I N E
805                 ///////////////////////////////////////////////////////////////////////////
806
807                 if(get_layer_outline_flag())
808                 {
809                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
810
811                         Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
812                         assert(layer);
813                         layer_selection.push_back(layer);
814                         layer->set_description(get_id()+_(" Outline"));
815                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
816                         if(get_feather())
817                         {
818                                 layer->set_param("feather",get_feather());
819                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
820                         }
821
822                         {
823                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
824                                 assert(action);
825
826                                 action->set_param("canvas",get_canvas());
827                                 action->set_param("canvas_interface",get_canvas_interface());
828                                 action->set_param("layer",layer);
829                                 if(!action->set_param("param",String("bline")))
830                                         synfig::error("LayerParamConnect didn't like \"param\"");
831                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
832                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
833
834                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
835                                 {
836                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
837                                         group.cancel();
838                                         throw String(_("Unable to create Outline layer"));
839                                         return false;
840                                 }
841                         }
842
843                         // only link the outline's origin parameter if the option is selected and we're creating more than one layer
844                         if (get_layer_link_origins_flag() && layers_to_create > 1)
845                         {
846                                 synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
847                                 assert(action);
848
849                                 action->set_param("canvas",get_canvas());
850                                 action->set_param("canvas_interface",get_canvas_interface());
851                                 action->set_param("layer",layer);
852                                 if(!action->set_param("param",String("origin")))
853                                         synfig::error("LayerParamConnect didn't like \"param\"");
854                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
855                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
856
857                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
858                                 {
859                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
860                                         group.cancel();
861                                         throw String(_("Unable to create Outline layer"));
862                                         return false;
863                                 }
864                         }
865                 }
866
867                 egress_on_selection_change=false;
868                 get_canvas_interface()->get_selection_manager()->clear_selected_layers();
869                 get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
870                 egress_on_selection_change=true;
871
872                 //if(finish_bline_dialog.get_region_flag() || finish_bline_dialog.get_bline_flag())
873                 //      get_canvas_interface()->signal_dirty_preview()();
874
875         } while(0);
876
877         reset();
878         increment_id();
879         return true;
880 }
881
882 Smach::event_result
883 StateBLine_Context::event_mouse_motion_handler(const Smach::event& x)
884 {
885         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
886
887         if(curr_duck)
888         {
889                 //synfig::info("Moved Duck");
890                 Point p(get_work_area()->snap_point_to_grid(event.pos));
891                 curr_duck->set_trans_point(p);
892                 if(next_duck)
893                         next_duck->set_trans_point(p);
894                 get_work_area()->queue_draw();
895                 return Smach::RESULT_ACCEPT;
896         }
897
898         return Smach::RESULT_OK;
899 }
900
901 Smach::event_result
902 StateBLine_Context::event_mouse_release_handler(const Smach::event& /*x*/)
903 {
904         if(curr_duck)
905         {
906                 //synfig::info("Released current duck");
907                 curr_duck->signal_edited()(curr_duck->get_point());
908                 if(next_duck)
909                 {
910                         //synfig::info("grabbing next duck");
911                         curr_duck=next_duck;
912                         next_duck=0;
913                 }
914                 return Smach::RESULT_ACCEPT;
915         }
916         return Smach::RESULT_OK;
917 }
918
919 Smach::event_result
920 StateBLine_Context::event_mouse_click_handler(const Smach::event& x)
921 {
922         // synfig::info("STATE BLINE: Received mouse button down Event");
923         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
924         switch(event.button)
925         {
926         case BUTTON_LEFT:
927                 {
928                         // If we are already looped up, then don't try to add anything else
929                         if(loop_)
930                                 return Smach::RESULT_OK;
931
932                         BLinePoint bline_point;
933
934                         bline_point.set_vertex(get_work_area()->snap_point_to_grid(event.pos));
935                         //bline_point.set_width(synfigapp::Main::get_bline_width());
936                         bline_point.set_width(1.0f);
937                         bline_point.set_origin(0.5f);
938                         bline_point.set_split_tangent_flag(false);
939                         bline_point.set_tangent1(Vector(0,0));
940
941                         // set the tangent
942                         /*
943                         if(bline_point_list.empty())
944                         {
945                                 bline_point.set_tangent1(Vector(1,1));
946                         }
947                         else
948                         {
949                                 const Vector t(event.pos-bline_point_list.back()->get_value().get(BLinePoint()).get_vertex());
950                                 bline_point.set_tangent1(t);
951                         }
952
953                         if(bline_point_list.size()>1)
954                         {
955                                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
956                                 iter=bline_point_list.end();
957                                 iter--;iter--;
958                                 BLinePoint prev(bline_point_list.back()->get_value().get(BLinePoint()));
959                                 prev.set_tangent1(event.pos-(*iter)->get_value().get(BLinePoint()).get_vertex());
960                                 bline_point_list.back()->set_value(prev);
961                         };
962                         */
963
964                         bline_point_list.push_back(ValueNode_Const::create(bline_point));
965
966                         refresh_ducks();
967                         return Smach::RESULT_ACCEPT;
968                 }
969
970         case BUTTON_RIGHT: // Intercept the right-button click to short-circuit the pop-up menu
971                 if (!getenv("SYNFIG_ENABLE_POPUP_MENU_IN_ALL_TOOLS"))
972                         return Smach::RESULT_ACCEPT;
973
974         default:
975                 return Smach::RESULT_OK;
976         }
977 }
978
979 void
980 StateBLine_Context::refresh_ducks(bool button_down)
981 {
982         get_work_area()->clear_ducks();
983         get_work_area()->queue_draw();
984
985         if(bline_point_list.empty())
986                 return;
987
988         list<ValueNode_Const::Handle>::iterator iter;
989
990         handle<WorkArea::Bezier> bezier;
991         handle<WorkArea::Duck> duck,tduck;
992         BLinePoint bline_point;
993
994         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
995         {
996                 ValueNode_Const::Handle value_node(*iter);
997                 bline_point=(value_node->get_value().get(BLinePoint()));
998                 assert(value_node);
999
1000
1001                 // First add the duck associated with this vertex
1002                 duck=new WorkArea::Duck(bline_point.get_vertex());
1003                 duck->set_editable(true);
1004 #ifdef DISTINGUISH_FIRST_DUCK
1005                 if (iter!=bline_point_list.begin())
1006                         duck->set_type(Duck::TYPE_VERTEX);
1007 #else
1008                 duck->set_type(Duck::TYPE_VERTEX);
1009 #endif
1010                 duck->set_name(strprintf("%x-vertex",value_node.get()));
1011                 duck->signal_edited().connect(
1012                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),value_node)
1013                 );
1014                 duck->signal_user_click(2).connect(
1015                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),value_node)
1016                 );
1017                 duck->set_guid(value_node->get_guid()^synfig::GUID::hasher(0));
1018
1019                 get_work_area()->add_duck(duck);
1020
1021                 // Add the tangent1 duck
1022                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1023                 tduck->set_editable(true);
1024                 tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1025                 tduck->set_origin(duck);
1026                 tduck->set_scalar(-0.33333333333333333);
1027                 tduck->set_tangent(true);
1028                 tduck->set_guid(value_node->get_guid()^synfig::GUID::hasher(3));
1029                 tduck->signal_edited().connect(
1030                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1031                 );
1032                 tduck->signal_user_click(2).connect(
1033                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1034                 );
1035
1036                 // See if we need to add that duck to the previous bezier
1037                 if(bezier)
1038                 {
1039                         get_work_area()->add_duck(tduck);
1040                         bezier->p2=duck;
1041                         bezier->c2=tduck;
1042
1043                         bezier->signal_user_click(2).connect(
1044                                 sigc::bind(
1045                                         sigc::mem_fun(
1046                                                 *this,
1047                                                 &studio::StateBLine_Context::popup_bezier_menu
1048                                         ),
1049                                         value_node
1050                                 )
1051                         );
1052
1053                         //get_work_area()->add_duck(bezier->c1);
1054                         //get_work_area()->add_duck(bezier->c2);
1055                         get_work_area()->add_bezier(bezier);
1056
1057                         bezier=0;
1058                 }
1059
1060                 // Now we see if we need to create a bezier
1061                 list<ValueNode_Const::Handle>::iterator next(iter);
1062                 next++;
1063
1064                 // If our next iterator is the end, then we don't need
1065                 // to add a bezier.
1066                 //if(next==bline_point_list.end() && !loop_)
1067                 //      continue;
1068
1069                 bezier=new WorkArea::Bezier();
1070
1071                 // Add the tangent2 duck
1072                 tduck=new WorkArea::Duck(bline_point.get_tangent2());
1073                 tduck->set_editable(true);
1074                 tduck->set_origin(duck);
1075                 tduck->set_scalar(0.33333333333333333);
1076                 tduck->set_tangent(true);
1077                 if(bline_point.get_split_tangent_flag())
1078                 {
1079                         tduck->set_name(strprintf("%x-tangent2",value_node.get()));
1080                         tduck->signal_edited().connect(
1081                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent2_change),value_node)
1082                         );
1083                 }
1084                 else
1085                 {
1086                         tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1087                         tduck->signal_edited().connect(
1088                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1089                         );
1090                 }
1091                 tduck->set_guid(value_node->get_guid()^synfig::GUID::hasher(4));
1092                 tduck->signal_user_click(2).connect(
1093                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1094                 );
1095
1096                 // Setup the next bezier
1097                 bezier->p1=duck;
1098                 bezier->c1=tduck;
1099
1100                 get_work_area()->add_duck(tduck);
1101                 curr_duck=tduck;
1102         }
1103
1104         // Add the loop, if requested
1105         if(bezier && loop_)
1106         {
1107                 curr_duck=0;
1108                 BLinePoint bline_point(bline_point_list.front()->get_value().get(BLinePoint()));
1109
1110                 duck=new WorkArea::Duck(bline_point.get_vertex());
1111                 duck->set_editable(true);
1112 #ifndef DISTINGUISH_FIRST_DUCK
1113                 duck->set_type(Duck::TYPE_VERTEX);
1114 #endif
1115                 duck->set_name(strprintf("%x-vertex",bline_point_list.front().get()));
1116                 duck->signal_edited().connect(
1117                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),bline_point_list.front())
1118                 );
1119                 duck->signal_user_click(2).connect(
1120                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),bline_point_list.front())
1121                 );
1122                 get_work_area()->add_duck(duck);
1123
1124                 // Add the tangent1 duck
1125                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1126                 tduck->set_editable(true);
1127                 tduck->set_name(strprintf("%x-tangent1",bline_point_list.front().get()));
1128                 tduck->set_origin(duck);
1129                 tduck->set_scalar(-0.33333333333333333);
1130                 tduck->set_tangent(true);
1131                 tduck->signal_edited().connect(
1132                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),bline_point_list.front())
1133                 );
1134                 tduck->signal_user_click(2).connect(
1135                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),bline_point_list.front())
1136                 );
1137                 get_work_area()->add_duck(tduck);
1138
1139                 bezier->p2=duck;
1140                 bezier->c2=tduck;
1141
1142                 bezier->signal_user_click(2).connect(
1143                         sigc::bind(
1144                                 sigc::mem_fun(
1145                                         *this,
1146                                         &studio::StateBLine_Context::popup_bezier_menu
1147                                 ),
1148                                 bline_point_list.front()
1149                         )
1150                 );
1151
1152                 //get_work_area()->add_duck(bezier->c1);
1153                 get_work_area()->add_bezier(bezier);
1154         }
1155         if(bezier && !loop_)
1156         {
1157                 duck=new WorkArea::Duck(bline_point.get_vertex());
1158                 duck->set_ignore(true);
1159                 duck->set_name("temp");
1160
1161                 // Add the tangent1 duck
1162                 tduck=new WorkArea::Duck(Vector(0,0));
1163                 tduck->set_ignore(true);
1164                 tduck->set_name("ttemp");
1165                 tduck->set_origin(duck);
1166                 tduck->set_scalar(-0.33333333333333333);
1167
1168                 tduck->set_tangent(true);
1169                 bezier->p2=duck;
1170                 bezier->c2=tduck;
1171
1172                 get_work_area()->add_duck(bezier->p2);
1173                 //get_work_area()->add_duck(bezier->c2);
1174                 get_work_area()->add_bezier(bezier);
1175
1176                 duck->set_guid(synfig::GUID());
1177                 tduck->set_guid(synfig::GUID());
1178
1179                 next_duck=duck;
1180         }
1181
1182         if(!button_down)
1183         {
1184                 if(curr_duck)
1185                 {
1186                         if(next_duck)
1187                         {
1188                                 curr_duck=next_duck;
1189                                 next_duck=0;
1190                         }
1191                 }
1192         }
1193         get_work_area()->queue_draw();
1194 }
1195
1196
1197 bool
1198 StateBLine_Context::on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1199 {
1200         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1201         bline_point.set_vertex(point);
1202         value_node->set_value(bline_point);
1203         //refresh_ducks();
1204         return true;
1205 }
1206
1207 bool
1208 StateBLine_Context::on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1209 {
1210         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1211         bline_point.set_tangent1(point);
1212         value_node->set_value(bline_point);
1213         //refresh_ducks();
1214         return true;
1215 }
1216
1217 bool
1218 StateBLine_Context::on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1219 {
1220         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1221         bline_point.set_tangent2(point);
1222         value_node->set_value(bline_point);
1223         //refresh_ducks();
1224         return true;
1225 }
1226
1227 void
1228 StateBLine_Context::loop_bline()
1229 {
1230         loop_=true;
1231
1232         refresh_ducks(false);
1233 }
1234
1235 void
1236 StateBLine_Context::unloop_bline()
1237 {
1238         loop_=false;
1239
1240         refresh_ducks(false);
1241 }
1242
1243 void
1244 StateBLine_Context::popup_vertex_menu(synfig::ValueNode_Const::Handle value_node)
1245 {
1246         menu.items().clear();
1247
1248         if(loop_)
1249         {
1250                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Unloop BLine"),
1251                                 sigc::mem_fun(*this,&studio::StateBLine_Context::unloop_bline)
1252                 ));
1253         } else {
1254                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Loop BLine"),
1255                                 sigc::mem_fun(*this,&studio::StateBLine_Context::loop_bline)
1256                 ));
1257         }
1258
1259         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Delete Vertex"),
1260                 sigc::bind(
1261                         sigc::mem_fun(*this,&studio::StateBLine_Context::bline_delete_vertex),
1262                         value_node
1263                 )
1264         ));
1265
1266         menu.popup(0,0);
1267 }
1268
1269 void
1270 StateBLine_Context::popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node)
1271 {
1272         menu.items().clear();
1273
1274         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Insert Vertex"),
1275                 sigc::bind(
1276                         sigc::bind(
1277                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_insert_vertex),
1278                                 location
1279                         ),
1280                         value_node
1281                 )
1282         ));
1283
1284         menu.popup(0,0);
1285 }
1286
1287 void
1288 StateBLine_Context::bline_insert_vertex(synfig::ValueNode_Const::Handle value_node, float origin)
1289 {
1290         list<ValueNode_Const::Handle>::iterator iter;
1291
1292         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1293                 if(*iter==value_node)
1294                 {
1295                         BLinePoint bline_point;
1296                         BLinePoint next_bline_point((*iter)->get_value().get(BLinePoint()));
1297                         BLinePoint prev_bline_point;
1298
1299                         list<ValueNode_Const::Handle>::iterator prev(iter);
1300                         if(iter==bline_point_list.begin())
1301                         {
1302                                 assert(loop_);
1303                                 prev = bline_point_list.end();
1304                         }
1305                         prev--;
1306
1307                         prev_bline_point=(*prev)->get_value().get(BLinePoint());
1308
1309                         etl::hermite<Vector> curve(prev_bline_point.get_vertex(),
1310                                                                            next_bline_point.get_vertex(),
1311                                                                            prev_bline_point.get_tangent2(),
1312                                                                            next_bline_point.get_tangent1());
1313                         etl::derivative< etl::hermite<Vector> > deriv(curve);
1314
1315                         bline_point.set_vertex(curve(origin));
1316                         bline_point.set_width((next_bline_point.get_width()-prev_bline_point.get_width())*origin+prev_bline_point.get_width());
1317                         bline_point.set_tangent1(deriv(origin)*std::min(1.0f-origin,origin));
1318                         bline_point.set_tangent2(bline_point.get_tangent1());
1319                         bline_point.set_split_tangent_flag(false);
1320                         bline_point.set_origin(origin);
1321
1322 /*
1323                         bline_point.set_vertex((next_bline_point.get_vertex()+prev_bline_point.get_vertex())*0.5);
1324                         bline_point.set_width((next_bline_point.get_width()+prev_bline_point.get_width())*0.5);
1325                         bline_point.set_origin(origin);
1326                         bline_point.set_split_tangent_flag(false);
1327                         bline_point.set_tangent1((next_bline_point.get_vertex()-prev_bline_point.get_vertex())*0.5);
1328 */
1329
1330                         bline_point_list.insert(iter,ValueNode_Const::create(bline_point));
1331                         break;
1332                 }
1333
1334         if(iter==bline_point_list.end())
1335         {
1336                 get_canvas_view()->get_ui_interface()->error(_("Unable to find where to insert vertex, internal error, please report this bug"));
1337         }
1338
1339         refresh_ducks(false);
1340 }
1341
1342 void
1343 StateBLine_Context::bline_delete_vertex(synfig::ValueNode_Const::Handle value_node)
1344 {
1345         list<ValueNode_Const::Handle>::iterator iter;
1346
1347         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1348                 if(*iter==value_node)
1349                 {
1350                         bline_point_list.erase(iter);
1351                         break;
1352                 }
1353         if(iter==bline_point_list.end())
1354         {
1355                 get_canvas_view()->get_ui_interface()->error(_("Unable to remove vertex, internal error, please report this bug"));
1356         }
1357
1358         refresh_ducks(false);
1359 }
1360
1361 void
1362 StateBLine_Context::popup_handle_menu(synfig::ValueNode_Const::Handle value_node)
1363 {
1364         menu.items().clear();
1365
1366         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1367
1368         if(bline_point.get_split_tangent_flag())
1369                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Merge Tangents"),
1370                         sigc::bind(
1371                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_attach_handle),
1372                                 value_node
1373                         )
1374                 ));
1375         else
1376                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Split Tangents"),
1377                         sigc::bind(
1378                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_detach_handle),
1379                                 value_node
1380                         )
1381                 ));
1382
1383         menu.popup(0,0);
1384 }
1385
1386 void
1387 StateBLine_Context::bline_detach_handle(synfig::ValueNode_Const::Handle value_node)
1388 {
1389         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1390         bline_point.set_split_tangent_flag(true);
1391         bline_point.set_tangent2(bline_point.get_tangent1());
1392         value_node->set_value(bline_point);
1393         refresh_ducks(false);
1394 }
1395
1396 void
1397 StateBLine_Context::bline_attach_handle(synfig::ValueNode_Const::Handle value_node)
1398 {
1399         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1400         bline_point.set_tangent1((bline_point.get_tangent1()+bline_point.get_tangent2())*0.5);
1401         bline_point.set_split_tangent_flag(false);
1402         value_node->set_value(bline_point);
1403         refresh_ducks(false);
1404 }