Fix a crash when running single-threaded and dragging the time slider.
[synfig.git] / synfig-studio / trunk / src / gtkmm / state_polygon.cpp
1 /* === S Y N F I G ========================================================= */
2 /*!     \file state_polygon.cpp
3 **      \brief Template File
4 **
5 **      $Id$
6 **
7 **      \legal
8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 **
10 **      This package is free software; you can redistribute it and/or
11 **      modify it under the terms of the GNU General Public License as
12 **      published by the Free Software Foundation; either version 2 of
13 **      the License, or (at your option) any later version.
14 **
15 **      This package is distributed in the hope that it will be useful,
16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 **      General Public License for more details.
19 **      \endlegal
20 */
21 /* ========================================================================= */
22
23 /* === H E A D E R S ======================================================= */
24
25 #ifdef USING_PCH
26 #       include "pch.h"
27 #else
28 #ifdef HAVE_CONFIG_H
29 #       include <config.h>
30 #endif
31
32 #include <gtkmm/dialog.h>
33 #include <gtkmm/entry.h>
34
35 #include <synfig/valuenode_dynamiclist.h>
36 #include <synfigapp/action_system.h>
37
38 #include "state_polygon.h"
39 #include "canvasview.h"
40 #include "workarea.h"
41 #include "app.h"
42
43 #include <synfigapp/action.h>
44 #include "event_mouse.h"
45 #include "event_layerclick.h"
46 #include "toolbox.h"
47 #include "dialog_tooloptions.h"
48 #include <synfigapp/main.h>
49
50 #endif
51
52 /* === U S I N G =========================================================== */
53
54 using namespace std;
55 using namespace etl;
56 using namespace synfig;
57 using namespace studio;
58
59 /* === M A C R O S ========================================================= */
60
61 /* === G L O B A L S ======================================================= */
62
63 StatePolygon studio::state_polygon;
64
65 /* === C L A S S E S & S T R U C T S ======================================= */
66
67 class studio::StatePolygon_Context : public sigc::trackable
68 {
69         etl::handle<CanvasView> canvas_view_;
70         CanvasView::IsWorking is_working;
71
72         bool prev_table_status;
73         bool prev_workarea_layer_status_;
74
75         Gtk::Menu menu;
76
77         Duckmatic::Push duckmatic_push;
78
79         std::list<synfig::Point> polygon_point_list;
80         synfigapp::Settings& settings;
81
82
83         bool on_polygon_duck_change(const synfig::Point &point, std::list<synfig::Point>::iterator iter);
84
85
86         void popup_handle_menu(synfigapp::ValueDesc value_desc);
87
88
89         void refresh_ducks();
90
91         Gtk::Table options_table;
92         Gtk::Entry entry_id;
93         Gtk::Button button_make;
94
95 public:
96         synfig::String get_id()const { return entry_id.get_text(); }
97         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
98
99         Smach::event_result event_stop_handler(const Smach::event& x);
100
101         Smach::event_result event_refresh_handler(const Smach::event& x);
102
103         Smach::event_result event_mouse_click_handler(const Smach::event& x);
104         Smach::event_result event_refresh_tool_options(const Smach::event& x);
105         void refresh_tool_options();
106
107         StatePolygon_Context(CanvasView* canvas_view);
108
109         ~StatePolygon_Context();
110
111         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
112         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
113         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
114         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
115
116         //void on_user_click(synfig::Point point);
117         void load_settings();
118         void save_settings();
119         void reset();
120         void increment_id();
121         bool egress_on_selection_change;
122         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
123         {
124                 if(egress_on_selection_change)
125                         throw Smach::egress_exception();
126                 return Smach::RESULT_OK;
127         }
128
129         void run();
130 };      // END of class StatePolygon_Context
131
132 /* === M E T H O D S ======================================================= */
133
134 StatePolygon::StatePolygon():
135         Smach::state<StatePolygon_Context>("polygon")
136 {
137         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StatePolygon_Context::event_layer_selection_changed_handler));
138         insert(event_def(EVENT_STOP,&StatePolygon_Context::event_stop_handler));
139         insert(event_def(EVENT_REFRESH,&StatePolygon_Context::event_refresh_handler));
140         insert(event_def(EVENT_REFRESH_DUCKS,&StatePolygon_Context::event_refresh_handler));
141         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StatePolygon_Context::event_mouse_click_handler));
142         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StatePolygon_Context::event_refresh_tool_options));
143 }
144
145 StatePolygon::~StatePolygon()
146 {
147 }
148
149 void
150 StatePolygon_Context::load_settings()
151 {
152         String value;
153
154         if(settings.get_value("polygon.id",value))
155                 set_id(value);
156         else
157                 set_id("Polygon");
158 }
159
160 void
161 StatePolygon_Context::save_settings()
162 {
163         settings.set_value("polygon.id",get_id().c_str());
164 }
165
166 void
167 StatePolygon_Context::reset()
168 {
169         polygon_point_list.clear();
170         refresh_ducks();
171 }
172
173 void
174 StatePolygon_Context::increment_id()
175 {
176         String id(get_id());
177         int number=1;
178         int digits=0;
179
180         if(id.empty())
181                 id="Polygon";
182
183         // If there is a number
184         // already at the end of the
185         // id, then remove it.
186         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
187         {
188                 // figure out how many digits it is
189                 for(digits=0;(int)id.size()-1>=digits && id[id.size()-1-digits]<='9' && id[id.size()-1-digits]>='0';digits++)while(false);
190
191                 String str_number;
192                 str_number=String(id,id.size()-digits,id.size());
193                 id=String(id,0,id.size()-digits);
194
195                 number=atoi(str_number.c_str());
196         }
197         else
198         {
199                 number=1;
200                 digits=3;
201         }
202
203         number++;
204
205         // Add the number back onto the id
206         {
207                 const String format(strprintf("%%0%dd",digits));
208                 id+=strprintf(format.c_str(),number);
209         }
210
211         // Set the ID
212         set_id(id);
213 }
214
215 StatePolygon_Context::StatePolygon_Context(CanvasView* canvas_view):
216         canvas_view_(canvas_view),
217         is_working(*canvas_view),
218         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
219         duckmatic_push(get_work_area()),
220         settings(synfigapp::Main::get_selected_input_device()->settings()),
221         entry_id(),
222         button_make(_("Make"))
223 {
224         egress_on_selection_change=true;
225         load_settings();
226
227         // Set up the tool options dialog
228         //options_table.attach(*manage(new Gtk::Label(_("Polygon Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
229         options_table.attach(entry_id, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
230         //options_table.attach(button_make, 0, 2, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
231         button_make.signal_pressed().connect(sigc::mem_fun(*this,&StatePolygon_Context::run));
232         options_table.show_all();
233         refresh_tool_options();
234         App::dialog_tool_options->present();
235
236
237         // Turn off layer clicking
238         get_work_area()->set_allow_layer_clicks(false);
239
240         // clear out the ducks
241         get_work_area()->clear_ducks();
242
243         // Refresh the work area
244         get_work_area()->queue_draw();
245
246         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
247
248         // Hide the tables if they are showing
249         prev_table_status=get_canvas_view()->tables_are_visible();
250         if(prev_table_status)get_canvas_view()->hide_tables();
251
252         // Disable the time bar
253         get_canvas_view()->set_sensitive_timebar(false);
254
255         // Connect a signal
256         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StatePolygon_Context::on_user_click));
257
258         App::toolbox->refresh();
259 }
260
261 void
262 StatePolygon_Context::refresh_tool_options()
263 {
264         App::dialog_tool_options->clear();
265         App::dialog_tool_options->set_widget(options_table);
266
267         App::dialog_tool_options->set_local_name(_("Polygon Tool"));
268         App::dialog_tool_options->set_name("polygon");
269
270         App::dialog_tool_options->add_button(
271                 Gtk::StockID("gtk-execute"),
272                 _("Make Polygon")
273         )->signal_clicked().connect(
274                 sigc::mem_fun(
275                         *this,
276                         &StatePolygon_Context::run
277                 )
278         );
279
280         App::dialog_tool_options->add_button(
281                 Gtk::StockID("gtk-clear"),
282                 _("Clear current Polygon")
283         )->signal_clicked().connect(
284                 sigc::mem_fun(
285                         *this,
286                         &StatePolygon_Context::reset
287                 )
288         );
289 }
290
291 Smach::event_result
292 StatePolygon_Context::event_refresh_tool_options(const Smach::event& /*x*/)
293 {
294         refresh_tool_options();
295         return Smach::RESULT_ACCEPT;
296 }
297
298 StatePolygon_Context::~StatePolygon_Context()
299 {
300         run();
301
302         save_settings();
303         // Restore layer clicking
304         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
305
306         App::dialog_tool_options->clear();
307
308         get_canvas_view()->work_area->reset_cursor();
309
310         // Enable the time bar
311         get_canvas_view()->set_sensitive_timebar(true);
312
313         // Bring back the tables if they were out before
314         if(prev_table_status)get_canvas_view()->show_tables();
315
316         // Refresh the work area
317         get_work_area()->queue_draw();
318
319         App::toolbox->refresh();
320 }
321
322 Smach::event_result
323 StatePolygon_Context::event_stop_handler(const Smach::event& /*x*/)
324 {
325         synfig::info("STATE RotoPolygon: Received Stop Event");
326         //throw Smach::egress_exception();
327         reset();
328         return Smach::RESULT_ACCEPT;
329
330 }
331
332 Smach::event_result
333 StatePolygon_Context::event_refresh_handler(const Smach::event& /*x*/)
334 {
335         synfig::info("STATE RotoPolygon: Received Refresh Event");
336         refresh_ducks();
337         return Smach::RESULT_ACCEPT;
338 }
339
340 void
341 StatePolygon_Context::run()
342 {
343         if(polygon_point_list.empty())
344                 return;
345
346         if(polygon_point_list.size()<3)
347         {
348                 get_canvas_view()->get_ui_interface()->error("You need at least 3 points to create a polygon");
349                 return;
350         }
351                 Layer::Handle layer;
352                 Canvas::Handle canvas(get_canvas_view()->get_canvas());
353                 int depth(0);
354
355                 // we are temporarily using the layer to hold something
356                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
357                 if(layer)
358                 {
359                         depth=layer->get_depth();
360                         canvas=layer->get_canvas();
361                 }
362
363                 {
364                         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New Polygon"));
365                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
366
367                         Layer::Handle layer(get_canvas_interface()->add_layer_to("polygon",canvas,depth));
368                         layer->set_description(get_id());
369                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
370
371                         layer->disconnect_dynamic_param("vector_list");
372                         if(!layer->set_param("vector_list",polygon_point_list))
373                         {
374                                 group.cancel();
375                                 get_canvas_view()->get_ui_interface()->error("Unable to set layer parameter");
376                                 return;
377                         }
378
379                         {
380                                 synfigapp::Action::Handle action(synfigapp::Action::create("value_desc_convert"));
381                                 synfigapp::ValueDesc value_desc(layer,"vector_list");
382                                 action->set_param("canvas",get_canvas());
383                                 action->set_param("canvas_interface",get_canvas_interface());
384                                 action->set_param("value_desc",value_desc);
385                                 action->set_param("type","dynamic_list");
386                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
387                                 {
388                                         group.cancel();
389                                         get_canvas_view()->get_ui_interface()->error("Unable to execute action \"value_desc_convert\"");
390                                         return;
391                                 }
392                         }
393                         egress_on_selection_change=false;
394                         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
395                         get_canvas_interface()->get_selection_manager()->set_selected_layer(layer);
396                         egress_on_selection_change=true;
397                         //get_canvas_interface()->signal_dirty_preview()();
398                 }
399 /*
400                 else
401                 {
402                         ValueNode::Handle value_node=(ValueNode_Const::create(polygon_point_list));
403                         std::string valuenode_name="Poly";
404                         while(studio::App::dialog_entry("New Polygon", "Please enter the new ID for this value_node",valuenode_name))
405                                 if(get_canvas_interface()->add_value_node(value_node,valuenode_name))
406                                         return true;
407                 }
408 */
409         reset();
410         increment_id();
411 }
412
413 Smach::event_result
414 StatePolygon_Context::event_mouse_click_handler(const Smach::event& x)
415 {
416         synfig::info("STATE ROTOPOLYGON: Received mouse button down Event");
417         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
418         switch(event.button)
419         {
420         case BUTTON_LEFT:
421                 polygon_point_list.push_back(get_work_area()->snap_point_to_grid(event.pos));
422                 refresh_ducks();
423                 return Smach::RESULT_ACCEPT;
424
425         case BUTTON_RIGHT: // Intercept the right-button click to short-circut the pop-up menu
426                 return Smach::RESULT_ACCEPT;
427
428         default:
429                 return Smach::RESULT_OK;
430         }
431 }
432
433
434 void
435 StatePolygon_Context::refresh_ducks()
436 {
437         get_work_area()->clear_ducks();
438
439         if(polygon_point_list.empty()) return;
440
441         std::list<synfig::Point>::iterator iter=polygon_point_list.begin();
442
443         etl::handle<WorkArea::Duck> duck;
444         duck=new WorkArea::Duck(*iter);
445         duck->set_editable(true);
446         duck->signal_edited().connect(
447                 sigc::bind(sigc::mem_fun(*this,&studio::StatePolygon_Context::on_polygon_duck_change),iter)
448         );
449         duck->signal_user_click(0).connect(sigc::mem_fun(*this,&StatePolygon_Context::run));
450
451         get_work_area()->add_duck(duck);
452
453         for(++iter;iter!=polygon_point_list.end();++iter)
454         {
455                 etl::handle<WorkArea::Bezier> bezier(new WorkArea::Bezier());
456                 bezier->p1=bezier->c1=duck;
457
458                 duck=new WorkArea::Duck(*iter);
459                 duck->set_editable(true);
460                 duck->set_name(strprintf("%x",&*iter));
461                 duck->signal_edited().connect(
462                         sigc::bind(sigc::mem_fun(*this,&studio::StatePolygon_Context::on_polygon_duck_change),iter)
463                 );
464
465                 get_work_area()->add_duck(duck);
466
467                 bezier->p2=bezier->c2=duck;
468                 get_work_area()->add_bezier(bezier);
469         }
470         get_work_area()->queue_draw();
471 }
472
473
474 bool
475 StatePolygon_Context::on_polygon_duck_change(const synfig::Point &point, std::list<synfig::Point>::iterator iter)
476 {
477         *iter=point;
478         return true;
479 }