Add a star tool. For drawing stars.
[synfig.git] / synfig-studio / trunk / src / gtkmm / state_star.cpp
1 /* === S Y N F I G ========================================================= */
2 /*!     \file state_star.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) 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 #include <synfigapp/action_system.h>
38 #include <synfig/valuenode_bline.h>
39
40 #include "state_star.h"
41 #include "canvasview.h"
42 #include "workarea.h"
43 #include "app.h"
44
45 #include <synfigapp/action.h>
46 #include "event_mouse.h"
47 #include "event_layerclick.h"
48 #include "toolbox.h"
49 #include "dialog_tooloptions.h"
50 #include <gtkmm/optionmenu.h>
51 #include "duck.h"
52 #include "widget_enum.h"
53 #include <synfigapp/main.h>
54
55 #include "general.h"
56
57 #endif
58
59 /* === U S I N G =========================================================== */
60
61 using namespace std;
62 using namespace etl;
63 using namespace synfig;
64 using namespace studio;
65
66 /* === M A C R O S ========================================================= */
67
68 /* === G L O B A L S ======================================================= */
69
70 StateStar studio::state_star;
71
72 /* === C L A S S E S & S T R U C T S ======================================= */
73
74 class studio::StateStar_Context : public sigc::trackable
75 {
76         etl::handle<CanvasView> canvas_view_;
77         CanvasView::IsWorking is_working;
78
79         Duckmatic::Push duckmatic_push;
80
81         Point point_holder;
82
83         etl::handle<Duck> point2_duck;
84
85         void refresh_ducks();
86
87         bool prev_workarea_layer_status_;
88
89         //Toolbox settings
90         synfigapp::Settings& settings;
91
92         //Toolbox display
93         Gtk::Table options_table;
94
95         Gtk::Entry              entry_id; //what to name the layer
96
97         Gtk::Adjustment adj_feather;
98         Gtk::Adjustment adj_number_of_points;
99         Gtk::Adjustment adj_angle_offset;
100         Gtk::SpinButton spin_feather;
101         Gtk::SpinButton spin_number_of_points;
102         Gtk::SpinButton spin_angle_offset;
103
104         Gtk::CheckButton checkbutton_invert;
105         Gtk::CheckButton checkbutton_regular_polygon;
106         Gtk::CheckButton checkbutton_layer_star;
107         Gtk::CheckButton checkbutton_layer_region;
108         Gtk::CheckButton checkbutton_layer_outline;
109         Gtk::CheckButton checkbutton_layer_curve_gradient;
110         Gtk::CheckButton checkbutton_layer_plant;
111         Gtk::CheckButton checkbutton_layer_link_offsets;
112
113 public:
114
115         // this only counts the layers which use blines - they're the only
116         // ones we link the offsets for
117         int layers_to_create()const
118         {
119                 return
120                         get_layer_region_flag() +
121                         get_layer_outline_flag() +
122                         get_layer_curve_gradient_flag() +
123                         get_layer_plant_flag();
124         }
125
126         synfig::String get_id()const { return entry_id.get_text(); }
127         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
128
129         Real get_feather()const { return adj_feather.get_value(); }
130         void set_feather(Real f) { adj_feather.set_value(f); }
131
132         Real get_number_of_points()const { return adj_number_of_points.get_value(); }
133         void set_number_of_points(Real f) { adj_number_of_points.set_value(f); }
134
135         Real get_angle_offset()const { return adj_angle_offset.get_value(); }
136         void set_angle_offset(Real f) { adj_angle_offset.set_value(f); }
137
138         bool get_invert()const { return checkbutton_invert.get_active(); }
139         void set_invert(bool i) { checkbutton_invert.set_active(i); }
140
141         bool get_regular_polygon()const { return checkbutton_regular_polygon.get_active(); }
142         void set_regular_polygon(bool i) { checkbutton_regular_polygon.set_active(i); }
143
144         bool get_layer_star_flag()const { return checkbutton_layer_star.get_active(); }
145         void set_layer_star_flag(bool x) { return checkbutton_layer_star.set_active(x); }
146
147         bool get_layer_region_flag()const { return checkbutton_layer_region.get_active(); }
148         void set_layer_region_flag(bool x) { return checkbutton_layer_region.set_active(x); }
149
150         bool get_layer_outline_flag()const { return checkbutton_layer_outline.get_active(); }
151         void set_layer_outline_flag(bool x) { return checkbutton_layer_outline.set_active(x); }
152
153         bool get_layer_curve_gradient_flag()const { return checkbutton_layer_curve_gradient.get_active(); }
154         void set_layer_curve_gradient_flag(bool x) { return checkbutton_layer_curve_gradient.set_active(x); }
155
156         bool get_layer_plant_flag()const { return checkbutton_layer_plant.get_active(); }
157         void set_layer_plant_flag(bool x) { return checkbutton_layer_plant.set_active(x); }
158
159         bool get_layer_link_offsets_flag()const { return checkbutton_layer_link_offsets.get_active(); }
160         void set_layer_link_offsets_flag(bool x) { return checkbutton_layer_link_offsets.set_active(x); }
161
162         void refresh_tool_options(); //to refresh the toolbox
163
164         //events
165         Smach::event_result event_stop_handler(const Smach::event& x);
166         Smach::event_result event_refresh_handler(const Smach::event& x);
167         Smach::event_result event_mouse_click_handler(const Smach::event& x);
168         Smach::event_result event_refresh_tool_options(const Smach::event& x);
169
170         //constructor destructor
171         StateStar_Context(CanvasView* canvas_view);
172         ~StateStar_Context();
173
174         //Canvas interaction
175         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
176         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
177         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
178         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
179
180         //Modifying settings etc.
181         void load_settings();
182         void save_settings();
183         void reset();
184         void increment_id();
185         bool egress_on_selection_change;
186         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
187         {
188                 if(egress_on_selection_change)
189                         throw Smach::egress_exception();
190                 return Smach::RESULT_OK;
191         }
192
193         void make_star(const Point& p1, const Point& p2);
194
195 };      // END of class StateStar_Context
196
197 /* === M E T H O D S ======================================================= */
198
199 StateStar::StateStar():
200         Smach::state<StateStar_Context>("star")
201 {
202         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StateStar_Context::event_layer_selection_changed_handler));
203         insert(event_def(EVENT_STOP,&StateStar_Context::event_stop_handler));
204         insert(event_def(EVENT_REFRESH,&StateStar_Context::event_refresh_handler));
205         insert(event_def(EVENT_REFRESH_DUCKS,&StateStar_Context::event_refresh_handler));
206         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateStar_Context::event_mouse_click_handler));
207         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateStar_Context::event_mouse_click_handler));
208         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateStar_Context::event_mouse_click_handler));
209         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateStar_Context::event_refresh_tool_options));
210 }
211
212 StateStar::~StateStar()
213 {
214 }
215
216 void
217 StateStar_Context::load_settings()
218 {
219         String value;
220
221         //parse the arguments yargh!
222         if(settings.get_value("star.id",value))
223                 set_id(value);
224         else
225                 set_id("Star");
226
227         if(settings.get_value("star.feather",value))
228                 set_feather(atof(value.c_str()));
229         else
230                 set_feather(0);
231
232         if(settings.get_value("star.number_of_points",value))
233                 set_number_of_points(atof(value.c_str()));
234         else
235                 set_number_of_points(5);
236
237         if(settings.get_value("star.angle_offset",value))
238                 set_angle_offset(atof(value.c_str()));
239         else
240                 set_angle_offset(0);
241
242         if(settings.get_value("star.invert",value) && value != "0")
243                 set_invert(true);
244         else
245                 set_invert(false);
246
247         if(settings.get_value("star.regular_polygon",value) && value != "0")
248                 set_regular_polygon(true);
249         else
250                 set_regular_polygon(false);
251
252         if(settings.get_value("star.layer_star",value) && value=="0")
253                 set_layer_star_flag(false);
254         else
255                 set_layer_star_flag(true);
256
257         if(settings.get_value("star.layer_region",value) && value=="1")
258                 set_layer_region_flag(true);
259         else
260                 set_layer_region_flag(false);
261
262         if(settings.get_value("star.layer_outline",value) && value=="1")
263                 set_layer_outline_flag(true);
264         else
265                 set_layer_outline_flag(false);
266
267         if(settings.get_value("star.layer_curve_gradient",value) && value=="1")
268                 set_layer_curve_gradient_flag(true);
269         else
270                 set_layer_curve_gradient_flag(false);
271
272         if(settings.get_value("star.layer_plant",value) && value=="1")
273                 set_layer_plant_flag(true);
274         else
275                 set_layer_plant_flag(false);
276
277         if(settings.get_value("star.layer_link_offsets",value) && value=="0")
278                 set_layer_link_offsets_flag(false);
279         else
280                 set_layer_link_offsets_flag(true);
281 }
282
283 void
284 StateStar_Context::save_settings()
285 {
286         settings.set_value("star.id",get_id());
287         settings.set_value("star.feather",strprintf("%f",(float)get_feather()));
288         settings.set_value("star.number_of_points",strprintf("%d",(int)(get_number_of_points() + 0.5)));
289         settings.set_value("star.angle_offset",strprintf("%f",(float)get_angle_offset()));
290         settings.set_value("star.invert",get_invert()?"1":"0");
291         settings.set_value("star.regular_polygon",get_regular_polygon()?"1":"0");
292         settings.set_value("star.layer_star",get_layer_star_flag()?"1":"0");
293         settings.set_value("star.layer_outline",get_layer_outline_flag()?"1":"0");
294         settings.set_value("star.layer_region",get_layer_region_flag()?"1":"0");
295         settings.set_value("star.layer_curve_gradient",get_layer_curve_gradient_flag()?"1":"0");
296         settings.set_value("star.layer_plant",get_layer_plant_flag()?"1":"0");
297         settings.set_value("star.layer_link_offsets",get_layer_link_offsets_flag()?"1":"0");
298 }
299
300 void
301 StateStar_Context::reset()
302 {
303         refresh_ducks();
304 }
305
306 void
307 StateStar_Context::increment_id()
308 {
309         String id(get_id());
310         int number=1;
311         int digits=0;
312
313         if(id.empty())
314                 id="Star";
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
331                 number=atoi(str_number.c_str());
332         }
333         else
334         {
335                 number=1;
336                 digits=3;
337         }
338
339         number++;
340
341         // Add the number back onto the id
342         {
343                 const String format(strprintf("%%0%dd",digits));
344                 id+=strprintf(format.c_str(),number);
345         }
346
347         // Set the ID
348         set_id(id);
349 }
350
351 StateStar_Context::StateStar_Context(CanvasView* canvas_view):
352         canvas_view_(canvas_view),
353         is_working(*canvas_view),
354         duckmatic_push(get_work_area()),
355         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
356         settings(synfigapp::Main::get_selected_input_device()->settings()),
357         entry_id(),
358         adj_feather(0,0,1,0.01,0.1),
359         adj_number_of_points(4,2,120,1,1,1), // value, lower, upper, step_increment, page_increment, page_size
360         adj_angle_offset(0,-360,360,.1,1,1), // value, lower, upper, step_increment, page_increment, page_size
361         spin_feather(adj_feather,0.1,3),
362         spin_number_of_points(adj_number_of_points,1,0),
363         spin_angle_offset(adj_angle_offset,1,1),
364         checkbutton_invert(_("Invert")),
365         checkbutton_regular_polygon(_("Regular Polygon")),
366         checkbutton_layer_star(_("Create Star Layer")),
367         checkbutton_layer_region(_("Create Region BLine")),
368         checkbutton_layer_outline(_("Create Outline BLine")),
369         checkbutton_layer_curve_gradient(_("Create Curve Gradient BLine")),
370         checkbutton_layer_plant(_("Create Plant BLine")),
371         checkbutton_layer_link_offsets(_("Link BLine Offsets"))
372 {
373         egress_on_selection_change=true;
374         // Set up the tool options dialog
375         //options_table.attach(*manage(new Gtk::Label(_("Star Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
376         options_table.attach(entry_id, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
377
378         load_settings();
379
380         //feather stuff
381         options_table.attach(*manage(new Gtk::Label(_("Feather:"))),                    0, 1,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
382         options_table.attach(spin_feather,                                                                              1, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
383         options_table.attach(checkbutton_invert,                                                                0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
384         options_table.attach(checkbutton_regular_polygon,                                               0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
385         options_table.attach(checkbutton_layer_star,                                                    0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
386 //      options_table.attach(checkbutton_layer_outline,                                                 0, 2,  8,  9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
387 //      options_table.attach(checkbutton_layer_region,                                                  0, 2,  9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
388 //      options_table.attach(checkbutton_layer_plant,                                                   0, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
389 //      options_table.attach(checkbutton_layer_curve_gradient,                                  0, 2, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
390 //      options_table.attach(checkbutton_layer_link_offsets,                                    0, 2, 12, 13, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
391         options_table.attach(*manage(new Gtk::Label(_("Number of Points:"))),   0, 1, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
392         options_table.attach(spin_number_of_points,                                                             1, 2, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
393         options_table.attach(*manage(new Gtk::Label(_("Angle Offset:"))),               0, 1, 14, 15, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
394         options_table.attach(spin_angle_offset,                                                                 1, 2, 14, 15, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
395
396         options_table.show_all();
397
398         refresh_tool_options();
399         App::dialog_tool_options->present();
400
401         // Turn off layer clicking
402         get_work_area()->set_allow_layer_clicks(false);
403
404         // clear out the ducks
405         get_work_area()->clear_ducks();
406
407         // Refresh the work area
408         get_work_area()->queue_draw();
409
410         // Hide the tables if they are showing
411         //prev_table_status=get_canvas_view()->tables_are_visible();
412         //if(prev_table_status)get_canvas_view()->hide_tables();
413
414         // Disable the time bar
415         //get_canvas_view()->set_sensitive_timebar(false);
416
417         // Connect a signal
418         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateStar_Context::on_user_click));
419         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
420
421         App::toolbox->refresh();
422 }
423
424 void
425 StateStar_Context::refresh_tool_options()
426 {
427         App::dialog_tool_options->clear();
428         App::dialog_tool_options->set_widget(options_table);
429         App::dialog_tool_options->set_local_name(_("Star Tool"));
430         App::dialog_tool_options->set_name("star");
431 }
432
433 Smach::event_result
434 StateStar_Context::event_refresh_tool_options(const Smach::event& /*x*/)
435 {
436         refresh_tool_options();
437         return Smach::RESULT_ACCEPT;
438 }
439
440 StateStar_Context::~StateStar_Context()
441 {
442         save_settings();
443
444         // Restore layer clicking
445         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
446         get_canvas_view()->work_area->reset_cursor();
447
448         App::dialog_tool_options->clear();
449
450         // Enable the time bar
451         //get_canvas_view()->set_sensitive_timebar(true);
452
453         // Bring back the tables if they were out before
454         //if(prev_table_status)get_canvas_view()->show_tables();
455
456         // Refresh the work area
457         get_work_area()->queue_draw();
458
459         get_canvas_view()->queue_rebuild_ducks();
460
461         App::toolbox->refresh();
462 }
463
464 Smach::event_result
465 StateStar_Context::event_stop_handler(const Smach::event& /*x*/)
466 {
467         throw Smach::egress_exception();
468 }
469
470 Smach::event_result
471 StateStar_Context::event_refresh_handler(const Smach::event& /*x*/)
472 {
473         refresh_ducks();
474         return Smach::RESULT_ACCEPT;
475 }
476
477 void
478 StateStar_Context::make_star(const Point& _p1, const Point& _p2)
479 {
480         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New Star"));
481         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
482
483         Layer::Handle layer;
484
485         Canvas::Handle canvas;
486         int depth(0);
487
488         // we are temporarily using the layer to hold something
489         layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
490         if(layer)
491         {
492                 depth=layer->get_depth();
493                 canvas=layer->get_canvas();
494         }
495
496         synfigapp::SelectionManager::LayerList layer_selection;
497         if (!getenv("SYNFIG_TOOLS_CLEAR_SELECTION"))
498                 layer_selection = get_canvas_view()->get_selection_manager()->get_selected_layers();
499
500         const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
501         const Point p1(transform.unperform(_p1));
502         const Point p2(transform.unperform(_p2));
503
504         Real radius((p2-p1).mag());
505         int points = get_number_of_points();
506         Angle::deg offset(get_angle_offset());
507         bool regular(get_regular_polygon());
508         Angle::deg angle(360.0/points);
509         Real x(p1[0]), y(p1[1]);
510         Real tangent(0);
511
512         std::vector<BLinePoint> new_list;
513         for (int i = 0; i < points; i++)
514         {
515                 new_list.push_back(*(new BLinePoint));
516                 new_list[i].set_width(1);
517                 new_list[i].set_vertex(Point(radius*Angle::cos(angle*i + offset).get() + x,
518                                                                          radius*Angle::sin(angle*i + offset).get() + y));
519                 new_list[i].set_tangent(Point(-radius*tangent*Angle::sin(angle*i + offset).get(),
520                                                                            radius*tangent*Angle::cos(angle*i + offset).get()));
521         }
522
523         ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
524         assert(value_node_bline);
525
526         ValueNode_Const::Handle value_node_offset(ValueNode_Const::create(Vector()));
527         assert(value_node_offset);
528
529         // Set the looping flag
530         value_node_bline->set_loop(true);
531
532         if(!canvas)
533                 canvas=get_canvas_view()->get_canvas();
534
535         value_node_bline->set_member_canvas(canvas);
536
537         // count how many layers we're going to be creating
538         int layers_to_create = this->layers_to_create();
539
540         ///////////////////////////////////////////////////////////////////////////
541         //   S T A R
542         ///////////////////////////////////////////////////////////////////////////
543
544         if (get_layer_star_flag())
545         {
546                 layer=get_canvas_interface()->add_layer_to("star",canvas,depth);
547                 layer_selection.push_back(layer);
548
549                 layer->set_param("offset",p1);
550                 get_canvas_interface()->signal_layer_param_changed()(layer,"offset");
551
552                 layer->set_param("radius1",(p2-p1).mag());
553                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius1");
554
555                 layer->set_param("radius2",(p2-p1).mag()/2);
556                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius2");
557
558                 layer->set_param("angle",offset);
559                 get_canvas_interface()->signal_layer_param_changed()(layer,"angle");
560
561                 layer->set_param("points",points);
562                 get_canvas_interface()->signal_layer_param_changed()(layer,"points");
563
564                 layer->set_param("regular_polygon",regular);
565                 get_canvas_interface()->signal_layer_param_changed()(layer,"regular_polygon");
566
567                 layer->set_param("feather",get_feather());
568                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
569
570                 layer->set_param("invert",get_invert());
571                 get_canvas_interface()->signal_layer_param_changed()(layer,"invert");
572
573                 layer->set_description(get_id());
574                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
575         }
576
577         ///////////////////////////////////////////////////////////////////////////
578         //   C U R V E   G R A D I E N T
579         ///////////////////////////////////////////////////////////////////////////
580
581         if(get_layer_curve_gradient_flag())
582         {
583                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
584
585                 Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
586                 assert(layer);
587                 layer_selection.push_back(layer);
588                 layer->set_description(get_id()+_(" Gradient"));
589                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
590
591                 {
592                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
593                         assert(action);
594
595                         action->set_param("canvas",get_canvas());
596                         action->set_param("canvas_interface",get_canvas_interface());
597                         action->set_param("layer",layer);
598                         if(!action->set_param("param",String("bline")))
599                                 synfig::error("LayerParamConnect didn't like \"param\"");
600                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
601                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
602
603                         if(!get_canvas_interface()->get_instance()->perform_action(action))
604                         {
605                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
606                                 group.cancel();
607                                 throw String(_("Unable to create Gradient layer"));
608                                 return;
609                         }
610                 }
611
612                 // only link the curve gradient's offset parameter if the option is selected and we're creating more than one layer
613                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
614                 {
615                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
616                         assert(action);
617
618                         action->set_param("canvas",get_canvas());
619                         action->set_param("canvas_interface",get_canvas_interface());
620                         action->set_param("layer",layer);
621                         if(!action->set_param("param",String("offset")))
622                                 synfig::error("LayerParamConnect didn't like \"param\"");
623                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
624                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
625
626                         if(!get_canvas_interface()->get_instance()->perform_action(action))
627                         {
628                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
629                                 group.cancel();
630                                 throw String(_("Unable to create Gradient layer"));
631                                 return;
632                         }
633                 }
634         }
635
636         ///////////////////////////////////////////////////////////////////////////
637         //   P L A N T
638         ///////////////////////////////////////////////////////////////////////////
639
640         if(get_layer_plant_flag())
641         {
642                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
643
644                 Layer::Handle layer(get_canvas_interface()->add_layer_to("plant",canvas,depth));
645                 assert(layer);
646                 layer_selection.push_back(layer);
647                 layer->set_description(get_id()+_(" Plant"));
648                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
649
650                 {
651                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
652                         assert(action);
653
654                         action->set_param("canvas",get_canvas());
655                         action->set_param("canvas_interface",get_canvas_interface());
656                         action->set_param("layer",layer);
657                         if(!action->set_param("param",String("bline")))
658                                 synfig::error("LayerParamConnect didn't like \"param\"");
659                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
660                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
661
662                         if(!get_canvas_interface()->get_instance()->perform_action(action))
663                         {
664                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
665                                 group.cancel();
666                                 throw String(_("Unable to create Plant layer"));
667                                 return;
668                         }
669                 }
670
671                 // only link the plant's offset parameter if the option is selected and we're creating more than one layer
672                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
673                 {
674                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
675                         assert(action);
676
677                         action->set_param("canvas",get_canvas());
678                         action->set_param("canvas_interface",get_canvas_interface());
679                         action->set_param("layer",layer);
680                         if(!action->set_param("param",String("offset")))
681                                 synfig::error("LayerParamConnect didn't like \"param\"");
682                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
683                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
684
685                         if(!get_canvas_interface()->get_instance()->perform_action(action))
686                         {
687                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
688                                 group.cancel();
689                                 throw String(_("Unable to create Plant layer"));
690                                 return;
691                         }
692                 }
693         }
694
695         ///////////////////////////////////////////////////////////////////////////
696         //   R E G I O N
697         ///////////////////////////////////////////////////////////////////////////
698
699         if(get_layer_region_flag())
700         {
701                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
702
703                 Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
704                 assert(layer);
705                 layer_selection.push_back(layer);
706                 layer->set_description(get_id()+_(" Region"));
707                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
708
709                 layer->set_param("feather",get_feather());
710                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
711
712                 layer->set_param("invert",get_invert());
713                 get_canvas_interface()->signal_layer_param_changed()(layer,"invert");
714
715                 if(get_layer_outline_flag())
716                         layer->set_param("color",synfigapp::Main::get_background_color());
717
718                 // I don't know if it's safe to reuse the same layer_param_connect action, so I'm
719                 // using 2 separate ones.
720                 {
721                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
722                         assert(action);
723
724                         action->set_param("canvas",get_canvas());
725                         action->set_param("canvas_interface",get_canvas_interface());
726                         action->set_param("layer",layer);
727                         if(!action->set_param("param",String("bline")))
728                                 synfig::error("LayerParamConnect didn't like \"param\"");
729                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
730                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
731
732                         if(!get_canvas_interface()->get_instance()->perform_action(action))
733                         {
734                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
735                                 group.cancel();
736                                 throw String(_("Unable to create Region layer"));
737                                 return;
738                         }
739                 }
740
741                 // only link the region's offset parameter if the option is selected and we're creating more than one layer
742                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
743                 {
744                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
745                         assert(action);
746
747                         action->set_param("canvas",get_canvas());
748                         action->set_param("canvas_interface",get_canvas_interface());
749                         action->set_param("layer",layer);
750                         if(!action->set_param("param",String("offset")))
751                                 synfig::error("LayerParamConnect didn't like \"param\"");
752                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
753                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
754
755                         if(!get_canvas_interface()->get_instance()->perform_action(action))
756                         {
757                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
758                                 group.cancel();
759                                 throw String(_("Unable to create Region layer"));
760                                 return;
761                         }
762                 }
763         }
764
765         ///////////////////////////////////////////////////////////////////////////
766         //   O U T L I N E
767         ///////////////////////////////////////////////////////////////////////////
768
769         if (get_layer_outline_flag())
770         {
771                 Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
772                 assert(layer);
773                 layer_selection.push_back(layer);
774                 layer->set_description(get_id()+_(" Outline"));
775                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
776
777                 layer->set_param("feather",get_feather());
778                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
779
780                 layer->set_param("invert",get_invert());
781                 get_canvas_interface()->signal_layer_param_changed()(layer,"invert");
782
783                 {
784                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
785                         assert(action);
786
787                         action->set_param("canvas",get_canvas());
788                         action->set_param("canvas_interface",get_canvas_interface());
789                         action->set_param("layer",layer);
790                         if(!action->set_param("param",String("bline")))
791                                 synfig::error("LayerParamConnect didn't like \"param\"");
792                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
793                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
794
795                         if(!get_canvas_interface()->get_instance()->perform_action(action))
796                         {
797                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
798                                 group.cancel();
799                                 throw String(_("Unable to create Outline layer"));
800                                 return;
801                         }
802                 }
803
804                 // only link the outline's offset parameter if the option is selected and we're creating more than one layer
805                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
806                 {
807                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
808                         assert(action);
809
810                         action->set_param("canvas",get_canvas());
811                         action->set_param("canvas_interface",get_canvas_interface());
812                         action->set_param("layer",layer);
813                         if(!action->set_param("param",String("offset")))
814                                 synfig::error("LayerParamConnect didn't like \"param\"");
815                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
816                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
817
818                         if(!get_canvas_interface()->get_instance()->perform_action(action))
819                         {
820                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
821                                 group.cancel();
822                                 throw String(_("Unable to create Outline layer"));
823                                 return;
824                         }
825                 }
826         }
827
828         egress_on_selection_change=false;
829         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
830         get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
831         egress_on_selection_change=true;
832
833         reset();
834         increment_id();
835 }
836
837 Smach::event_result
838 StateStar_Context::event_mouse_click_handler(const Smach::event& x)
839 {
840         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
841
842         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DOWN && event.button==BUTTON_LEFT)
843         {
844                 point_holder=get_work_area()->snap_point_to_grid(event.pos);
845                 etl::handle<Duck> duck=new Duck();
846                 duck->set_point(point_holder);
847                 duck->set_name("p1");
848                 duck->set_type(Duck::TYPE_POSITION);
849                 duck->set_editable(false);
850                 get_work_area()->add_duck(duck);
851
852                 point2_duck=new Duck();
853                 point2_duck->set_point(Vector(0,0));
854                 point2_duck->set_name("radius");
855                 point2_duck->set_origin(duck);
856                 point2_duck->set_radius(true);
857                 point2_duck->set_scalar(-1);
858                 point2_duck->set_type(Duck::TYPE_RADIUS);
859                 point2_duck->set_hover(true);
860                 get_work_area()->add_duck(point2_duck);
861
862                 return Smach::RESULT_ACCEPT;
863         }
864
865         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DRAG && event.button==BUTTON_LEFT)
866         {
867                 point2_duck->set_point(point_holder-get_work_area()->snap_point_to_grid(event.pos));
868                 get_work_area()->queue_draw();
869                 return Smach::RESULT_ACCEPT;
870         }
871
872         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_UP && event.button==BUTTON_LEFT)
873         {
874                 Point point(get_work_area()->snap_point_to_grid(event.pos));
875
876                 if (App::restrict_radius_ducks)
877                 {
878                         if ((point[0] - point_holder[0]) < 0) point[0] = point_holder[0];
879                         if ((point[1] - point_holder[1]) < 0) point[1] = point_holder[1];
880                 }
881
882                 make_star(point_holder, point);
883                 get_work_area()->clear_ducks();
884                 return Smach::RESULT_ACCEPT;
885         }
886
887         return Smach::RESULT_OK;
888 }
889
890
891 void
892 StateStar_Context::refresh_ducks()
893 {
894         get_work_area()->clear_ducks();
895         get_work_area()->queue_draw();
896 }