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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_circle.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_circle.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 enum CircleFalloff
  68 {
  69         CIRCLE_SQUARED  =0,
  70         CIRCLE_INTERPOLATION_LINEAR     =1,
  71         CIRCLE_COSINE   =2,
  72         CIRCLE_SIGMOND  =3,
  73         CIRCLE_SQRT             =4,
  74         CIRCLE_NUM_FALLOFF
  75 };
  76
  77 /* === G L O B A L S ======================================================= */
  78
  79 StateCircle studio::state_circle;
  80
  81 /* === C L A S S E S & S T R U C T S ======================================= */
  82
  83 class studio::StateCircle_Context : public sigc::trackable
  84 {
  85         etl::handle<CanvasView> canvas_view_;
  86         CanvasView::IsWorking is_working;
  87
  88         Duckmatic::Push duckmatic_push;
  89
  90         Point point_holder;
  91
  92         etl::handle<Duck> point2_duck;
  93
  94         void refresh_ducks();
  95
  96         bool prev_workarea_layer_status_;
  97
  98         //Toolbox settings
  99         synfigapp::Settings& settings;
 100
 101         //Toolbox display
 102         Gtk::Table options_table;
 103
 104         Gtk::Entry              entry_id; //what to name the layer
 105
 106         Widget_Enum             enum_falloff;
 107         Widget_Enum             enum_blend;
 108
 109         Gtk::Adjustment adj_feather;
 110         Gtk::Adjustment adj_number_of_bline_points;
 111         Gtk::Adjustment adj_bline_point_angle_offset;
 112         Gtk::SpinButton spin_feather;
 113         Gtk::SpinButton spin_number_of_bline_points;
 114         Gtk::SpinButton spin_bline_point_angle_offset;
 115
 116         Gtk::CheckButton checkbutton_layer_circle;
 117         Gtk::CheckButton checkbutton_invert;
 118         Gtk::CheckButton checkbutton_layer_region;
 119         Gtk::CheckButton checkbutton_layer_outline;
 120         Gtk::CheckButton checkbutton_layer_curve_gradient;
 121         Gtk::CheckButton checkbutton_layer_plant;
 122         Gtk::CheckButton checkbutton_layer_link_offsets;
 123
 124 public:
 125
 126         // this only counts the layers which use blines - they're the only
 127         // ones we link the offsets for
 128         int layers_to_create()const
 129         {
 130                 return
 131                         get_layer_region_flag() +
 132                         get_layer_outline_flag() +
 133                         get_layer_curve_gradient_flag() +
 134                         get_layer_plant_flag();
 135         }
 136
 137         synfig::String get_id()const { return entry_id.get_text(); }
 138         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 139
 140         int get_falloff()const { return enum_falloff.get_value(); }
 141         void set_falloff(int x) { return enum_falloff.set_value(x); }
 142
 143         int get_blend()const { return enum_blend.get_value(); }
 144         void set_blend(int x) { return enum_blend.set_value(x); }
 145
 146         Real get_feather()const { return adj_feather.get_value(); }
 147         void set_feather(Real f) { adj_feather.set_value(f); }
 148
 149         Real get_number_of_bline_points()const { return adj_number_of_bline_points.get_value(); }
 150         void set_number_of_bline_points(Real f) { adj_number_of_bline_points.set_value(f); }
 151
 152         Real get_bline_point_angle_offset()const { return adj_bline_point_angle_offset.get_value(); }
 153         void set_bline_point_angle_offset(Real f) { adj_bline_point_angle_offset.set_value(f); }
 154
 155         bool get_layer_circle_flag()const { return checkbutton_layer_circle.get_active(); }
 156         void set_layer_circle_flag(bool x) { return checkbutton_layer_circle.set_active(x); }
 157
 158         bool get_invert()const { return checkbutton_invert.get_active(); }
 159         void set_invert(bool i) { checkbutton_invert.set_active(i); }
 160
 161         bool get_layer_region_flag()const { return checkbutton_layer_region.get_active(); }
 162         void set_layer_region_flag(bool x) { return checkbutton_layer_region.set_active(x); }
 163
 164         bool get_layer_outline_flag()const { return checkbutton_layer_outline.get_active(); }
 165         void set_layer_outline_flag(bool x) { return checkbutton_layer_outline.set_active(x); }
 166
 167         bool get_layer_curve_gradient_flag()const { return checkbutton_layer_curve_gradient.get_active(); }
 168         void set_layer_curve_gradient_flag(bool x) { return checkbutton_layer_curve_gradient.set_active(x); }
 169
 170         bool get_layer_plant_flag()const { return checkbutton_layer_plant.get_active(); }
 171         void set_layer_plant_flag(bool x) { return checkbutton_layer_plant.set_active(x); }
 172
 173         bool get_layer_link_offsets_flag()const { return checkbutton_layer_link_offsets.get_active(); }
 174         void set_layer_link_offsets_flag(bool x) { return checkbutton_layer_link_offsets.set_active(x); }
 175
 176         void refresh_tool_options(); //to refresh the toolbox
 177
 178         //events
 179         Smach::event_result event_stop_handler(const Smach::event& x);
 180         Smach::event_result event_refresh_handler(const Smach::event& x);
 181         Smach::event_result event_mouse_click_handler(const Smach::event& x);
 182         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 183
 184         //constructor destructor
 185         StateCircle_Context(CanvasView* canvas_view);
 186         ~StateCircle_Context();
 187
 188         //Canvas interaction
 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
 194         //Modifying settings etc.
 195         void load_settings();
 196         void save_settings();
 197         void reset();
 198         void increment_id();
 199         bool egress_on_selection_change;
 200         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
 201         {
 202                 if(egress_on_selection_change)
 203                         throw Smach::egress_exception();
 204                 return Smach::RESULT_OK;
 205         }
 206
 207         void make_circle(const Point& p1, const Point& p2);
 208
 209 };      // END of class StateCircle_Context
 210
 211 /* === M E T H O D S ======================================================= */
 212
 213 StateCircle::StateCircle():
 214         Smach::state<StateCircle_Context>("circle")
 215 {
 216         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StateCircle_Context::event_layer_selection_changed_handler));
 217         insert(event_def(EVENT_STOP,&StateCircle_Context::event_stop_handler));
 218         insert(event_def(EVENT_REFRESH,&StateCircle_Context::event_refresh_handler));
 219         insert(event_def(EVENT_REFRESH_DUCKS,&StateCircle_Context::event_refresh_handler));
 220         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateCircle_Context::event_mouse_click_handler));
 221         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateCircle_Context::event_mouse_click_handler));
 222         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateCircle_Context::event_mouse_click_handler));
 223         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateCircle_Context::event_refresh_tool_options));
 224 }
 225
 226 StateCircle::~StateCircle()
 227 {
 228 }
 229
 230 void
 231 StateCircle_Context::load_settings()
 232 {
 233         String value;
 234
 235         //parse the arguments yargh!
 236         if(settings.get_value("circle.id",value))
 237                 set_id(value);
 238         else
 239                 set_id("Circle");
 240
 241         if(settings.get_value("circle.fallofftype",value) && value != "")
 242                 set_falloff(atoi(value.c_str()));
 243         else
 244                 set_falloff(2);
 245
 246         if(settings.get_value("circle.blend",value) && value != "")
 247                 set_blend(atoi(value.c_str()));
 248         else
 249                 set_blend(0);//(int)Color::BLEND_COMPOSITE); //0 should be blend composites value
 250
 251         if(settings.get_value("circle.feather",value))
 252                 set_feather(atof(value.c_str()));
 253         else
 254                 set_feather(0);
 255
 256         if(settings.get_value("circle.number_of_bline_points",value))
 257                 set_number_of_bline_points(atof(value.c_str()));
 258         else
 259                 set_number_of_bline_points(4);
 260
 261         if(settings.get_value("circle.bline_point_angle_offset",value))
 262                 set_bline_point_angle_offset(atof(value.c_str()));
 263         else
 264                 set_bline_point_angle_offset(0);
 265
 266         if(settings.get_value("circle.layer_circle",value) && value=="0")
 267                 set_layer_circle_flag(false);
 268         else
 269                 set_layer_circle_flag(true);
 270
 271         if(settings.get_value("circle.invert",value) && value != "0")
 272                 set_invert(true);
 273         else
 274                 set_invert(false);
 275
 276         if(settings.get_value("circle.layer_region",value) && value=="1")
 277                 set_layer_region_flag(true);
 278         else
 279                 set_layer_region_flag(false);
 280
 281         if(settings.get_value("circle.layer_outline",value) && value=="1")
 282                 set_layer_outline_flag(true);
 283         else
 284                 set_layer_outline_flag(false);
 285
 286         if(settings.get_value("circle.layer_curve_gradient",value) && value=="1")
 287                 set_layer_curve_gradient_flag(true);
 288         else
 289                 set_layer_curve_gradient_flag(false);
 290
 291         if(settings.get_value("circle.layer_plant",value) && value=="1")
 292                 set_layer_plant_flag(true);
 293         else
 294                 set_layer_plant_flag(false);
 295
 296         if(settings.get_value("circle.layer_link_offsets",value) && value=="0")
 297                 set_layer_link_offsets_flag(false);
 298         else
 299                 set_layer_link_offsets_flag(true);
 300 }
 301
 302 void
 303 StateCircle_Context::save_settings()
 304 {
 305         settings.set_value("circle.id",get_id());
 306         settings.set_value("circle.fallofftype",strprintf("%d",get_falloff()));
 307         settings.set_value("circle.blend",strprintf("%d",get_blend()));
 308         settings.set_value("circle.feather",strprintf("%f",(float)get_feather()));
 309         settings.set_value("circle.number_of_bline_points",strprintf("%d",(int)(get_number_of_bline_points() + 0.5)));
 310         settings.set_value("circle.bline_point_angle_offset",strprintf("%f",(float)get_bline_point_angle_offset()));
 311         settings.set_value("circle.layer_circle",get_layer_circle_flag()?"1":"0");
 312         settings.set_value("circle.invert",get_invert()?"1":"0");
 313         settings.set_value("circle.layer_outline",get_layer_outline_flag()?"1":"0");
 314         settings.set_value("circle.layer_region",get_layer_region_flag()?"1":"0");
 315         settings.set_value("circle.layer_curve_gradient",get_layer_curve_gradient_flag()?"1":"0");
 316         settings.set_value("circle.layer_plant",get_layer_plant_flag()?"1":"0");
 317         settings.set_value("circle.layer_link_offsets",get_layer_link_offsets_flag()?"1":"0");
 318 }
 319
 320 void
 321 StateCircle_Context::reset()
 322 {
 323         refresh_ducks();
 324 }
 325
 326 void
 327 StateCircle_Context::increment_id()
 328 {
 329         String id(get_id());
 330         int number=1;
 331         int digits=0;
 332
 333         if(id.empty())
 334                 id="Circle";
 335
 336         // If there is a number
 337         // already at the end of the
 338         // id, then remove it.
 339         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 340         {
 341                 // figure out how many digits it is
 342                 for (digits = 0;
 343                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 344                          digits++)
 345                         ;
 346
 347                 String str_number;
 348                 str_number=String(id,id.size()-digits,id.size());
 349                 id=String(id,0,id.size()-digits);
 350
 351                 number=atoi(str_number.c_str());
 352         }
 353         else
 354         {
 355                 number=1;
 356                 digits=3;
 357         }
 358
 359         number++;
 360
 361         // Add the number back onto the id
 362         {
 363                 const String format(strprintf("%%0%dd",digits));
 364                 id+=strprintf(format.c_str(),number);
 365         }
 366
 367         // Set the ID
 368         set_id(id);
 369 }
 370
 371 StateCircle_Context::StateCircle_Context(CanvasView* canvas_view):
 372         canvas_view_(canvas_view),
 373         is_working(*canvas_view),
 374         duckmatic_push(get_work_area()),
 375         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 376         settings(synfigapp::Main::get_selected_input_device()->settings()),
 377         entry_id(),
 378         adj_feather(0,0,1,0.01,0.1),
 379         adj_number_of_bline_points(4,2,120,1,1,1), // value, lower, upper, step_increment, page_increment, page_size
 380         adj_bline_point_angle_offset(0,-360,360,.1,1,1), // value, lower, upper, step_increment, page_increment, page_size
 381         spin_feather(adj_feather,0.1,3),
 382         spin_number_of_bline_points(adj_number_of_bline_points,1,0),
 383         spin_bline_point_angle_offset(adj_bline_point_angle_offset,1,1),
 384         checkbutton_layer_circle(_("Create Circle")),
 385         checkbutton_invert(_("Invert")),
 386         checkbutton_layer_region(_("Create Region BLine")),
 387         checkbutton_layer_outline(_("Create Outline BLine")),
 388         checkbutton_layer_curve_gradient(_("Create Curve Gradient BLine")),
 389         checkbutton_layer_plant(_("Create Plant BLine")),
 390         checkbutton_layer_link_offsets(_("Link BLine Offsets"))
 391 {
 392         egress_on_selection_change=true;
 393         // Set up the tool options dialog
 394         //options_table.attach(*manage(new Gtk::Label(_("Circle Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 395         options_table.attach(entry_id, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 396
 397         enum_falloff.set_param_desc(ParamDesc("falloff")
 398                 .set_local_name(_("Falloff"))
 399                 .set_description(_("Determines the falloff function for the feather"))
 400                 .set_hint("enum")
 401                 .add_enum_value(CIRCLE_INTERPOLATION_LINEAR,"linear",_("Linear"))
 402                 .add_enum_value(CIRCLE_SQUARED,"squared",_("Squared"))
 403                 .add_enum_value(CIRCLE_SQRT,"sqrt",_("Square Root"))
 404                 .add_enum_value(CIRCLE_SIGMOND,"sigmond",_("Sigmond"))
 405                 .add_enum_value(CIRCLE_COSINE,"cosine",_("Cosine")));
 406
 407         enum_blend.set_param_desc(ParamDesc(Color::BLEND_COMPOSITE,"blend_method")
 408                 .set_local_name(_("Blend Method"))
 409                 .set_description(_("Defines the blend method to be used for circles")));
 410
 411         load_settings();
 412
 413         //feather stuff
 414         options_table.attach(*manage(new Gtk::Label(_("Feather:"))), 0, 1, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 415         options_table.attach(spin_feather, 1, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 416         options_table.attach(enum_falloff, 0, 2, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 417         options_table.attach(enum_blend, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 418         options_table.attach(checkbutton_layer_circle,                          0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 419         options_table.attach(checkbutton_invert,                                        0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 420         options_table.attach(checkbutton_layer_outline,                         0, 2,  8,  9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 421         options_table.attach(checkbutton_layer_region,                          0, 2,  9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 422         options_table.attach(checkbutton_layer_plant,                           0, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 423         options_table.attach(checkbutton_layer_curve_gradient,          0, 2, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 424         options_table.attach(checkbutton_layer_link_offsets,            0, 2, 12, 13, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 425         options_table.attach(*manage(new Gtk::Label(_("BLine Points:"))), 0, 1, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 426         options_table.attach(spin_number_of_bline_points, 1, 2, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 427         options_table.attach(*manage(new Gtk::Label(_("Point Angle Offset:"))), 0, 1, 14, 15, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 428         options_table.attach(spin_bline_point_angle_offset, 1, 2, 14, 15, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 429
 430         options_table.show_all();
 431
 432         refresh_tool_options();
 433         App::dialog_tool_options->present();
 434
 435         // Turn off layer clicking
 436         get_work_area()->set_allow_layer_clicks(false);
 437
 438         // clear out the ducks
 439         get_work_area()->clear_ducks();
 440
 441         // Refresh the work area
 442         get_work_area()->queue_draw();
 443
 444         // Hide the tables if they are showing
 445         //prev_table_status=get_canvas_view()->tables_are_visible();
 446         //if(prev_table_status)get_canvas_view()->hide_tables();
 447
 448         // Disable the time bar
 449         //get_canvas_view()->set_sensitive_timebar(false);
 450
 451         // Connect a signal
 452         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateCircle_Context::on_user_click));
 453         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 454
 455         App::toolbox->refresh();
 456 }
 457
 458 void
 459 StateCircle_Context::refresh_tool_options()
 460 {
 461         App::dialog_tool_options->clear();
 462         App::dialog_tool_options->set_widget(options_table);
 463         App::dialog_tool_options->set_local_name(_("Circle Tool"));
 464         App::dialog_tool_options->set_name("circle");
 465 }
 466
 467 Smach::event_result
 468 StateCircle_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 469 {
 470         refresh_tool_options();
 471         return Smach::RESULT_ACCEPT;
 472 }
 473
 474 StateCircle_Context::~StateCircle_Context()
 475 {
 476         save_settings();
 477
 478         // Restore layer clicking
 479         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 480         get_canvas_view()->work_area->reset_cursor();
 481
 482         App::dialog_tool_options->clear();
 483
 484         // Enable the time bar
 485         //get_canvas_view()->set_sensitive_timebar(true);
 486
 487         // Bring back the tables if they were out before
 488         //if(prev_table_status)get_canvas_view()->show_tables();
 489
 490         // Refresh the work area
 491         get_work_area()->queue_draw();
 492
 493         get_canvas_view()->queue_rebuild_ducks();
 494
 495         App::toolbox->refresh();
 496 }
 497
 498 Smach::event_result
 499 StateCircle_Context::event_stop_handler(const Smach::event& /*x*/)
 500 {
 501         throw Smach::egress_exception();
 502 }
 503
 504 Smach::event_result
 505 StateCircle_Context::event_refresh_handler(const Smach::event& /*x*/)
 506 {
 507         refresh_ducks();
 508         return Smach::RESULT_ACCEPT;
 509 }
 510
 511 void
 512 StateCircle_Context::make_circle(const Point& _p1, const Point& _p2)
 513 {
 514         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New Circle"));
 515         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 516
 517         Layer::Handle layer;
 518
 519         Canvas::Handle canvas;
 520         int depth(0);
 521
 522         // we are temporarily using the layer to hold something
 523         layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 524         if(layer)
 525         {
 526                 depth=layer->get_depth();
 527                 canvas=layer->get_canvas();
 528         }
 529
 530         synfigapp::SelectionManager::LayerList layer_selection(get_canvas_view()->get_selection_manager()->get_selected_layers());
 531
 532         const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 533         const Point p1(transform.unperform(_p1));
 534         const Point p2(transform.unperform(_p2));
 535
 536         Real radius((p2-p1).mag());
 537         int points = get_number_of_bline_points();
 538         Angle::deg offset(get_bline_point_angle_offset());
 539         Angle::deg angle(360.0/points);
 540         Real tangent(4 * ((points == 2)
 541                                           ? 1
 542                                           : ((2 * Angle::cos(angle/2).get() - Angle::cos(angle).get() - 1) / Angle::sin(angle).get())));
 543         Real x(p1[0]), y(p1[1]);
 544
 545         std::vector<BLinePoint> new_list;
 546         for (int i = 0; i < points; i++)
 547         {
 548                 new_list.push_back(*(new BLinePoint));
 549                 new_list[i].set_width(1);
 550                 new_list[i].set_vertex(Point(radius*Angle::cos(angle*i + offset).get() + x,
 551                                                                          radius*Angle::sin(angle*i + offset).get() + y));
 552                 new_list[i].set_tangent(Point(-radius*tangent*Angle::sin(angle*i + offset).get(),
 553                                                                            radius*tangent*Angle::cos(angle*i + offset).get()));
 554         }
 555
 556         ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
 557         assert(value_node_bline);
 558
 559         ValueNode_Const::Handle value_node_offset(ValueNode_Const::create(Vector()));
 560         assert(value_node_offset);
 561
 562         // Set the looping flag
 563         value_node_bline->set_loop(true);
 564
 565         if(!canvas)
 566                 canvas=get_canvas_view()->get_canvas();
 567
 568         value_node_bline->set_member_canvas(canvas);
 569
 570         // count how many layers we're going to be creating
 571         int layers_to_create = this->layers_to_create();
 572
 573         ///////////////////////////////////////////////////////////////////////////
 574         //   C I R C L E
 575         ///////////////////////////////////////////////////////////////////////////
 576
 577         if (get_layer_circle_flag() &&
 578                 get_falloff() >= 0 && get_falloff() < CIRCLE_NUM_FALLOFF)
 579         {
 580                 layer=get_canvas_interface()->add_layer_to("circle",canvas,depth);
 581                 layer_selection.push_back(layer);
 582
 583                 layer->set_param("pos",p1);
 584                 get_canvas_interface()->signal_layer_param_changed()(layer,"pos");
 585
 586                 layer->set_param("radius",(p2-p1).mag());
 587                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
 588
 589                 layer->set_param("falloff",get_falloff());
 590                 get_canvas_interface()->signal_layer_param_changed()(layer,"falloff");
 591
 592                 layer->set_param("feather",get_feather());
 593                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 594
 595                 layer->set_param("invert",get_invert());
 596                 get_canvas_interface()->signal_layer_param_changed()(layer,"invert");
 597
 598                 layer->set_param("blend_method",get_blend());
 599                 get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 600
 601                 layer->set_description(get_id());
 602                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 603         }
 604
 605         ///////////////////////////////////////////////////////////////////////////
 606         //   C U R V E   G R A D I E N T
 607         ///////////////////////////////////////////////////////////////////////////
 608
 609         if(get_layer_curve_gradient_flag())
 610         {
 611                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 612
 613                 Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
 614                 assert(layer);
 615                 layer_selection.push_back(layer);
 616                 layer->set_description(get_id()+_(" Gradient"));
 617                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 618
 619                 {
 620                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 621                         assert(action);
 622
 623                         action->set_param("canvas",get_canvas());
 624                         action->set_param("canvas_interface",get_canvas_interface());
 625                         action->set_param("layer",layer);
 626                         if(!action->set_param("param",String("bline")))
 627                                 synfig::error("LayerParamConnect didn't like \"param\"");
 628                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 629                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 630
 631                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 632                         {
 633                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 634                                 group.cancel();
 635                                 throw String(_("Unable to create Gradient layer"));
 636                                 return;
 637                         }
 638                 }
 639
 640                 // only link the curve gradient's offset parameter if the option is selected and we're creating more than one layer
 641                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
 642                 {
 643                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 644                         assert(action);
 645
 646                         action->set_param("canvas",get_canvas());
 647                         action->set_param("canvas_interface",get_canvas_interface());
 648                         action->set_param("layer",layer);
 649                         if(!action->set_param("param",String("offset")))
 650                                 synfig::error("LayerParamConnect didn't like \"param\"");
 651                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 652                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 653
 654                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 655                         {
 656                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 657                                 group.cancel();
 658                                 throw String(_("Unable to create Gradient layer"));
 659                                 return;
 660                         }
 661                 }
 662         }
 663
 664         ///////////////////////////////////////////////////////////////////////////
 665         //   P L A N T
 666         ///////////////////////////////////////////////////////////////////////////
 667
 668         if(get_layer_plant_flag())
 669         {
 670                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 671
 672                 Layer::Handle layer(get_canvas_interface()->add_layer_to("plant",canvas,depth));
 673                 assert(layer);
 674                 layer_selection.push_back(layer);
 675                 layer->set_description(get_id()+_(" Plant"));
 676                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 677
 678                 {
 679                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 680                         assert(action);
 681
 682                         action->set_param("canvas",get_canvas());
 683                         action->set_param("canvas_interface",get_canvas_interface());
 684                         action->set_param("layer",layer);
 685                         if(!action->set_param("param",String("bline")))
 686                                 synfig::error("LayerParamConnect didn't like \"param\"");
 687                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 688                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 689
 690                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 691                         {
 692                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 693                                 group.cancel();
 694                                 throw String(_("Unable to create Plant layer"));
 695                                 return;
 696                         }
 697                 }
 698
 699                 // only link the plant's offset parameter if the option is selected and we're creating more than one layer
 700                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
 701                 {
 702                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 703                         assert(action);
 704
 705                         action->set_param("canvas",get_canvas());
 706                         action->set_param("canvas_interface",get_canvas_interface());
 707                         action->set_param("layer",layer);
 708                         if(!action->set_param("param",String("offset")))
 709                                 synfig::error("LayerParamConnect didn't like \"param\"");
 710                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 711                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 712
 713                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 714                         {
 715                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 716                                 group.cancel();
 717                                 throw String(_("Unable to create Plant layer"));
 718                                 return;
 719                         }
 720                 }
 721         }
 722
 723         ///////////////////////////////////////////////////////////////////////////
 724         //   R E G I O N
 725         ///////////////////////////////////////////////////////////////////////////
 726
 727         if(get_layer_region_flag())
 728         {
 729                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 730
 731                 Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
 732                 assert(layer);
 733                 layer_selection.push_back(layer);
 734                 layer->set_description(get_id()+_(" Region"));
 735                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 736
 737                 if(get_feather())
 738                 {
 739                         layer->set_param("feather",get_feather());
 740                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 741                 }
 742
 743                 if(get_layer_outline_flag())
 744                         layer->set_param("color",synfigapp::Main::get_background_color());
 745
 746                 // I don't know if it's safe to reuse the same layer_param_connect action, so I'm
 747                 // using 2 separate ones.
 748                 {
 749                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 750                         assert(action);
 751
 752                         action->set_param("canvas",get_canvas());
 753                         action->set_param("canvas_interface",get_canvas_interface());
 754                         action->set_param("layer",layer);
 755                         if(!action->set_param("param",String("bline")))
 756                                 synfig::error("LayerParamConnect didn't like \"param\"");
 757                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 758                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 759
 760                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 761                         {
 762                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 763                                 group.cancel();
 764                                 throw String(_("Unable to create Region layer"));
 765                                 return;
 766                         }
 767                 }
 768
 769                 // only link the region's offset parameter if the option is selected and we're creating more than one layer
 770                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
 771                 {
 772                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 773                         assert(action);
 774
 775                         action->set_param("canvas",get_canvas());
 776                         action->set_param("canvas_interface",get_canvas_interface());
 777                         action->set_param("layer",layer);
 778                         if(!action->set_param("param",String("offset")))
 779                                 synfig::error("LayerParamConnect didn't like \"param\"");
 780                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 781                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 782
 783                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 784                         {
 785                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 786                                 group.cancel();
 787                                 throw String(_("Unable to create Region layer"));
 788                                 return;
 789                         }
 790                 }
 791         }
 792
 793         ///////////////////////////////////////////////////////////////////////////
 794         //   O U T L I N E
 795         ///////////////////////////////////////////////////////////////////////////
 796
 797         if (get_layer_outline_flag())
 798         {
 799                 Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
 800                 assert(layer);
 801                 layer_selection.push_back(layer);
 802                 layer->set_description(get_id()+_(" Outline"));
 803                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 804                 if(get_feather())
 805                 {
 806                         layer->set_param("feather",get_feather());
 807                         get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 808                 }
 809
 810                 {
 811                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 812                         assert(action);
 813
 814                         action->set_param("canvas",get_canvas());
 815                         action->set_param("canvas_interface",get_canvas_interface());
 816                         action->set_param("layer",layer);
 817                         if(!action->set_param("param",String("bline")))
 818                                 synfig::error("LayerParamConnect didn't like \"param\"");
 819                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 820                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 821
 822                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 823                         {
 824                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 825                                 group.cancel();
 826                                 throw String(_("Unable to create Outline layer"));
 827                                 return;
 828                         }
 829                 }
 830
 831                 // only link the outline's offset parameter if the option is selected and we're creating more than one layer
 832                 if (get_layer_link_offsets_flag() && layers_to_create > 1)
 833                 {
 834                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 835                         assert(action);
 836
 837                         action->set_param("canvas",get_canvas());
 838                         action->set_param("canvas_interface",get_canvas_interface());
 839                         action->set_param("layer",layer);
 840                         if(!action->set_param("param",String("offset")))
 841                                 synfig::error("LayerParamConnect didn't like \"param\"");
 842                         if(!action->set_param("value_node",ValueNode::Handle(value_node_offset)))
 843                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 844
 845                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 846                         {
 847                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 848                                 group.cancel();
 849                                 throw String(_("Unable to create Outline layer"));
 850                                 return;
 851                         }
 852                 }
 853         }
 854
 855         egress_on_selection_change=false;
 856         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 857         get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
 858         egress_on_selection_change=true;
 859
 860         reset();
 861         increment_id();
 862 }
 863
 864 Smach::event_result
 865 StateCircle_Context::event_mouse_click_handler(const Smach::event& x)
 866 {
 867         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 868
 869         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DOWN && event.button==BUTTON_LEFT)
 870         {
 871                 point_holder=get_work_area()->snap_point_to_grid(event.pos);
 872                 etl::handle<Duck> duck=new Duck();
 873                 duck->set_point(point_holder);
 874                 duck->set_name("p1");
 875                 duck->set_type(Duck::TYPE_POSITION);
 876                 duck->set_editable(false);
 877                 get_work_area()->add_duck(duck);
 878
 879                 point2_duck=new Duck();
 880                 point2_duck->set_point(Vector(0,0));
 881                 point2_duck->set_name("radius");
 882                 point2_duck->set_origin(duck);
 883                 point2_duck->set_radius(true);
 884                 point2_duck->set_scalar(-1);
 885                 point2_duck->set_type(Duck::TYPE_RADIUS);
 886                 point2_duck->set_hover(true);
 887                 get_work_area()->add_duck(point2_duck);
 888
 889                 return Smach::RESULT_ACCEPT;
 890         }
 891
 892         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DRAG && event.button==BUTTON_LEFT)
 893         {
 894                 point2_duck->set_point(point_holder-get_work_area()->snap_point_to_grid(event.pos));
 895                 get_work_area()->queue_draw();
 896                 return Smach::RESULT_ACCEPT;
 897         }
 898
 899         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_UP && event.button==BUTTON_LEFT)
 900         {
 901                 Point point(get_work_area()->snap_point_to_grid(event.pos));
 902
 903                 if (App::restrict_radius_ducks)
 904                 {
 905                         if ((point[0] - point_holder[0]) < 0) point[0] = point_holder[0];
 906                         if ((point[1] - point_holder[1]) < 0) point[1] = point_holder[1];
 907                 }
 908
 909                 make_circle(point_holder, point);
 910                 get_work_area()->clear_ducks();
 911                 return Smach::RESULT_ACCEPT;
 912         }
 913
 914         return Smach::RESULT_OK;
 915 }
 916
 917
 918 void
 919 StateCircle_Context::refresh_ducks()
 920 {
 921         get_work_area()->clear_ducks();
 922         get_work_area()->queue_draw();
 923 }