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 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 108         Widget_Enum             enum_blend;
 109 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 110
 111         Gtk::Adjustment adj_feather;
 112         Gtk::Adjustment adj_number_of_bline_points;
 113         Gtk::Adjustment adj_bline_point_angle_offset;
 114         Gtk::SpinButton spin_feather;
 115         Gtk::SpinButton spin_number_of_bline_points;
 116         Gtk::SpinButton spin_bline_point_angle_offset;
 117
 118         Gtk::CheckButton checkbutton_invert;
 119         Gtk::CheckButton checkbutton_layer_circle;
 120         Gtk::CheckButton checkbutton_layer_region;
 121         Gtk::CheckButton checkbutton_layer_outline;
 122         Gtk::CheckButton checkbutton_layer_curve_gradient;
 123         Gtk::CheckButton checkbutton_layer_plant;
 124         Gtk::CheckButton checkbutton_layer_link_origins;
 125
 126 public:
 127
 128         // this only counts the layers which use blines - they're the only
 129         // ones we link the origins for
 130         int layers_to_create()const
 131         {
 132                 return
 133                         get_layer_region_flag() +
 134                         get_layer_outline_flag() +
 135                         get_layer_curve_gradient_flag() +
 136                         get_layer_plant_flag();
 137         }
 138
 139         synfig::String get_id()const { return entry_id.get_text(); }
 140         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 141
 142         int get_falloff()const { return enum_falloff.get_value(); }
 143         void set_falloff(int x) { return enum_falloff.set_value(x); }
 144
 145 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 146         int get_blend()const { return enum_blend.get_value(); }
 147         void set_blend(int x) { return enum_blend.set_value(x); }
 148 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 149
 150         Real get_feather()const { return adj_feather.get_value(); }
 151         void set_feather(Real f) { adj_feather.set_value(f); }
 152
 153         Real get_number_of_bline_points()const { return adj_number_of_bline_points.get_value(); }
 154         void set_number_of_bline_points(Real f) { adj_number_of_bline_points.set_value(f); }
 155
 156         Real get_bline_point_angle_offset()const { return adj_bline_point_angle_offset.get_value(); }
 157         void set_bline_point_angle_offset(Real f) { adj_bline_point_angle_offset.set_value(f); }
 158
 159         bool get_invert()const { return checkbutton_invert.get_active(); }
 160         void set_invert(bool i) { checkbutton_invert.set_active(i); }
 161
 162         bool get_layer_circle_flag()const { return checkbutton_layer_circle.get_active(); }
 163         void set_layer_circle_flag(bool x) { return checkbutton_layer_circle.set_active(x); }
 164
 165         bool get_layer_region_flag()const { return checkbutton_layer_region.get_active(); }
 166         void set_layer_region_flag(bool x) { return checkbutton_layer_region.set_active(x); }
 167
 168         bool get_layer_outline_flag()const { return checkbutton_layer_outline.get_active(); }
 169         void set_layer_outline_flag(bool x) { return checkbutton_layer_outline.set_active(x); }
 170
 171         bool get_layer_curve_gradient_flag()const { return checkbutton_layer_curve_gradient.get_active(); }
 172         void set_layer_curve_gradient_flag(bool x) { return checkbutton_layer_curve_gradient.set_active(x); }
 173
 174         bool get_layer_plant_flag()const { return checkbutton_layer_plant.get_active(); }
 175         void set_layer_plant_flag(bool x) { return checkbutton_layer_plant.set_active(x); }
 176
 177         bool get_layer_link_origins_flag()const { return checkbutton_layer_link_origins.get_active(); }
 178         void set_layer_link_origins_flag(bool x) { return checkbutton_layer_link_origins.set_active(x); }
 179
 180         void refresh_tool_options(); //to refresh the toolbox
 181
 182         //events
 183         Smach::event_result event_stop_handler(const Smach::event& x);
 184         Smach::event_result event_refresh_handler(const Smach::event& x);
 185         Smach::event_result event_mouse_click_handler(const Smach::event& x);
 186         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 187
 188         //constructor destructor
 189         StateCircle_Context(CanvasView* canvas_view);
 190         ~StateCircle_Context();
 191
 192         //Canvas interaction
 193         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 194         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 195         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 196         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 197
 198         //Modifying settings etc.
 199         void load_settings();
 200         void save_settings();
 201         void reset();
 202         void increment_id();
 203         bool egress_on_selection_change;
 204         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
 205         {
 206                 if(egress_on_selection_change)
 207                         throw Smach::egress_exception();
 208                 return Smach::RESULT_OK;
 209         }
 210
 211         void make_circle(const Point& p1, const Point& p2);
 212
 213 };      // END of class StateCircle_Context
 214
 215 /* === M E T H O D S ======================================================= */
 216
 217 StateCircle::StateCircle():
 218         Smach::state<StateCircle_Context>("circle")
 219 {
 220         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StateCircle_Context::event_layer_selection_changed_handler));
 221         insert(event_def(EVENT_STOP,&StateCircle_Context::event_stop_handler));
 222         insert(event_def(EVENT_REFRESH,&StateCircle_Context::event_refresh_handler));
 223         insert(event_def(EVENT_REFRESH_DUCKS,&StateCircle_Context::event_refresh_handler));
 224         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateCircle_Context::event_mouse_click_handler));
 225         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateCircle_Context::event_mouse_click_handler));
 226         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateCircle_Context::event_mouse_click_handler));
 227         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateCircle_Context::event_refresh_tool_options));
 228 }
 229
 230 StateCircle::~StateCircle()
 231 {
 232 }
 233
 234 void
 235 StateCircle_Context::load_settings()
 236 {
 237         String value;
 238
 239         //parse the arguments yargh!
 240         if(settings.get_value("circle.id",value))
 241                 set_id(value);
 242         else
 243                 set_id("Circle");
 244
 245         if(settings.get_value("circle.fallofftype",value) && value != "")
 246                 set_falloff(atoi(value.c_str()));
 247         else
 248                 set_falloff(2);
 249
 250 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 251         if(settings.get_value("circle.blend",value) && value != "")
 252                 set_blend(atoi(value.c_str()));
 253         else
 254                 set_blend(0);//(int)Color::BLEND_COMPOSITE); //0 should be blend composites value
 255 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 256
 257         if(settings.get_value("circle.feather",value))
 258                 set_feather(atof(value.c_str()));
 259         else
 260                 set_feather(0);
 261
 262         if(settings.get_value("circle.number_of_bline_points",value))
 263                 set_number_of_bline_points(atof(value.c_str()));
 264         else
 265                 set_number_of_bline_points(4);
 266
 267         if(settings.get_value("circle.bline_point_angle_offset",value))
 268                 set_bline_point_angle_offset(atof(value.c_str()));
 269         else
 270                 set_bline_point_angle_offset(0);
 271
 272         if(settings.get_value("circle.invert",value) && value != "0")
 273                 set_invert(true);
 274         else
 275                 set_invert(false);
 276
 277         if(settings.get_value("circle.layer_circle",value) && value=="0")
 278                 set_layer_circle_flag(false);
 279         else
 280                 set_layer_circle_flag(true);
 281
 282         if(settings.get_value("circle.layer_region",value) && value=="1")
 283                 set_layer_region_flag(true);
 284         else
 285                 set_layer_region_flag(false);
 286
 287         if(settings.get_value("circle.layer_outline",value) && value=="1")
 288                 set_layer_outline_flag(true);
 289         else
 290                 set_layer_outline_flag(false);
 291
 292         if(settings.get_value("circle.layer_curve_gradient",value) && value=="1")
 293                 set_layer_curve_gradient_flag(true);
 294         else
 295                 set_layer_curve_gradient_flag(false);
 296
 297         if(settings.get_value("circle.layer_plant",value) && value=="1")
 298                 set_layer_plant_flag(true);
 299         else
 300                 set_layer_plant_flag(false);
 301
 302         if(settings.get_value("circle.layer_link_origins",value) && value=="0")
 303                 set_layer_link_origins_flag(false);
 304         else
 305                 set_layer_link_origins_flag(true);
 306 }
 307
 308 void
 309 StateCircle_Context::save_settings()
 310 {
 311         settings.set_value("circle.id",get_id());
 312         settings.set_value("circle.fallofftype",strprintf("%d",get_falloff()));
 313 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 314         settings.set_value("circle.blend",strprintf("%d",get_blend()));
 315 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 316         settings.set_value("circle.feather",strprintf("%f",(float)get_feather()));
 317         settings.set_value("circle.number_of_bline_points",strprintf("%d",(int)(get_number_of_bline_points() + 0.5)));
 318         settings.set_value("circle.bline_point_angle_offset",strprintf("%f",(float)get_bline_point_angle_offset()));
 319         settings.set_value("circle.invert",get_invert()?"1":"0");
 320         settings.set_value("circle.layer_circle",get_layer_circle_flag()?"1":"0");
 321         settings.set_value("circle.layer_outline",get_layer_outline_flag()?"1":"0");
 322         settings.set_value("circle.layer_region",get_layer_region_flag()?"1":"0");
 323         settings.set_value("circle.layer_curve_gradient",get_layer_curve_gradient_flag()?"1":"0");
 324         settings.set_value("circle.layer_plant",get_layer_plant_flag()?"1":"0");
 325         settings.set_value("circle.layer_link_origins",get_layer_link_origins_flag()?"1":"0");
 326 }
 327
 328 void
 329 StateCircle_Context::reset()
 330 {
 331         refresh_ducks();
 332 }
 333
 334 void
 335 StateCircle_Context::increment_id()
 336 {
 337         String id(get_id());
 338         int number=1;
 339         int digits=0;
 340
 341         if(id.empty())
 342                 id="Circle";
 343
 344         // If there is a number
 345         // already at the end of the
 346         // id, then remove it.
 347         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 348         {
 349                 // figure out how many digits it is
 350                 for (digits = 0;
 351                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 352                          digits++)
 353                         ;
 354
 355                 String str_number;
 356                 str_number=String(id,id.size()-digits,id.size());
 357                 id=String(id,0,id.size()-digits);
 358
 359                 number=atoi(str_number.c_str());
 360         }
 361         else
 362         {
 363                 number=1;
 364                 digits=3;
 365         }
 366
 367         number++;
 368
 369         // Add the number back onto the id
 370         {
 371                 const String format(strprintf("%%0%dd",digits));
 372                 id+=strprintf(format.c_str(),number);
 373         }
 374
 375         // Set the ID
 376         set_id(id);
 377 }
 378
 379 StateCircle_Context::StateCircle_Context(CanvasView* canvas_view):
 380         canvas_view_(canvas_view),
 381         is_working(*canvas_view),
 382         duckmatic_push(get_work_area()),
 383         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 384         settings(synfigapp::Main::get_selected_input_device()->settings()),
 385         entry_id(),                             //   value lower upper  step page
 386         adj_feather(                                    0,    0,    1, 0.01, 0.1),
 387         adj_number_of_bline_points(             0,    2,  120, 1   , 1  ),
 388         adj_bline_point_angle_offset(   0, -360,  360, 0.1 , 1  ),
 389         spin_feather(adj_feather,0.1,3),
 390         spin_number_of_bline_points(adj_number_of_bline_points,1,0),
 391         spin_bline_point_angle_offset(adj_bline_point_angle_offset,1,1),
 392         checkbutton_invert(_("Invert")),
 393         checkbutton_layer_circle(_("Create Circle Layer")),
 394         checkbutton_layer_region(_("Create Region BLine")),
 395         checkbutton_layer_outline(_("Create Outline BLine")),
 396         checkbutton_layer_curve_gradient(_("Create Curve Gradient BLine")),
 397         checkbutton_layer_plant(_("Create Plant BLine")),
 398         checkbutton_layer_link_origins(_("Link BLine Origins"))
 399 {
 400         egress_on_selection_change=true;
 401         // Set up the tool options dialog
 402         options_table.attach(*manage(new Gtk::Label(_("Circle Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 403         options_table.attach(entry_id,                                                                  0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 404
 405         enum_falloff.set_param_desc(ParamDesc("falloff")
 406                 .set_local_name(_("Falloff"))
 407                 .set_description(_("Determines the falloff function for the feather"))
 408                 .set_hint("enum")
 409                 .add_enum_value(CIRCLE_INTERPOLATION_LINEAR,"linear",_("Linear"))
 410                 .add_enum_value(CIRCLE_SQUARED,"squared",_("Squared"))
 411                 .add_enum_value(CIRCLE_SQRT,"sqrt",_("Square Root"))
 412                 .add_enum_value(CIRCLE_SIGMOND,"sigmond",_("Sigmond"))
 413                 .add_enum_value(CIRCLE_COSINE,"cosine",_("Cosine")));
 414
 415 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 416         enum_blend.set_param_desc(ParamDesc(Color::BLEND_COMPOSITE,"blend_method")
 417                 .set_local_name(_("Blend Method"))
 418                 .set_description(_("Defines the blend method to be used for circles")));
 419 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 420
 421         load_settings();
 422
 423         //feather stuff
 424         options_table.attach(*manage(new Gtk::Label(_("Feather:"))), 0, 1, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 425         options_table.attach(spin_feather, 1, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 426         options_table.attach(enum_falloff, 0, 2, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 427 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 428         options_table.attach(enum_blend, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 429 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 430         options_table.attach(checkbutton_invert,                                        0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 431         options_table.attach(checkbutton_layer_circle,                          0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 432         options_table.attach(checkbutton_layer_outline,                         0, 2,  8,  9, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 433         options_table.attach(checkbutton_layer_region,                          0, 2,  9, 10, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 434         options_table.attach(checkbutton_layer_plant,                           0, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 435         options_table.attach(checkbutton_layer_curve_gradient,          0, 2, 11, 12, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 436         options_table.attach(checkbutton_layer_link_origins,            0, 2, 12, 13, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 437         options_table.attach(*manage(new Gtk::Label(_("BLine Points:"))), 0, 1, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 438         options_table.attach(spin_number_of_bline_points, 1, 2, 13, 14, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 439         options_table.attach(*manage(new Gtk::Label(_("Point Angle Offset:"))), 0, 1, 14, 15, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 440         options_table.attach(spin_bline_point_angle_offset, 1, 2, 14, 15, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 441
 442         options_table.show_all();
 443
 444         refresh_tool_options();
 445         App::dialog_tool_options->present();
 446
 447         // Turn off layer clicking
 448         get_work_area()->set_allow_layer_clicks(false);
 449
 450         // clear out the ducks
 451         get_work_area()->clear_ducks();
 452
 453         // Refresh the work area
 454         get_work_area()->queue_draw();
 455
 456         // Hide the tables if they are showing
 457         //prev_table_status=get_canvas_view()->tables_are_visible();
 458         //if(prev_table_status)get_canvas_view()->hide_tables();
 459
 460         // Disable the time bar
 461         //get_canvas_view()->set_sensitive_timebar(false);
 462
 463         // Connect a signal
 464         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateCircle_Context::on_user_click));
 465         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 466
 467         App::toolbox->refresh();
 468 }
 469
 470 void
 471 StateCircle_Context::refresh_tool_options()
 472 {
 473         App::dialog_tool_options->clear();
 474         App::dialog_tool_options->set_widget(options_table);
 475         App::dialog_tool_options->set_local_name(_("Circle Tool"));
 476         App::dialog_tool_options->set_name("circle");
 477 }
 478
 479 Smach::event_result
 480 StateCircle_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 481 {
 482         refresh_tool_options();
 483         return Smach::RESULT_ACCEPT;
 484 }
 485
 486 StateCircle_Context::~StateCircle_Context()
 487 {
 488         save_settings();
 489
 490         // Restore layer clicking
 491         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 492         get_canvas_view()->work_area->reset_cursor();
 493
 494         App::dialog_tool_options->clear();
 495
 496         // Enable the time bar
 497         //get_canvas_view()->set_sensitive_timebar(true);
 498
 499         // Bring back the tables if they were out before
 500         //if(prev_table_status)get_canvas_view()->show_tables();
 501
 502         // Refresh the work area
 503         get_work_area()->queue_draw();
 504
 505         get_canvas_view()->queue_rebuild_ducks();
 506
 507         App::toolbox->refresh();
 508 }
 509
 510 Smach::event_result
 511 StateCircle_Context::event_stop_handler(const Smach::event& /*x*/)
 512 {
 513         throw Smach::egress_exception();
 514 }
 515
 516 Smach::event_result
 517 StateCircle_Context::event_refresh_handler(const Smach::event& /*x*/)
 518 {
 519         refresh_ducks();
 520         return Smach::RESULT_ACCEPT;
 521 }
 522
 523 void
 524 StateCircle_Context::make_circle(const Point& _p1, const Point& _p2)
 525 {
 526         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New Circle"));
 527         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 528
 529         Layer::Handle layer;
 530
 531         Canvas::Handle canvas;
 532         int depth(0);
 533
 534         // we are temporarily using the layer to hold something
 535         layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 536         if(layer)
 537         {
 538                 depth=layer->get_depth();
 539                 canvas=layer->get_canvas();
 540         }
 541
 542         synfigapp::SelectionManager::LayerList layer_selection;
 543         if (!getenv("SYNFIG_TOOLS_CLEAR_SELECTION"))
 544                 layer_selection = get_canvas_view()->get_selection_manager()->get_selected_layers();
 545
 546         const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 547         const Point p1(transform.unperform(_p1));
 548         const Point p2(transform.unperform(_p2));
 549
 550         Real radius((p2-p1).mag());
 551         int points = get_number_of_bline_points();
 552         Angle::deg offset(get_bline_point_angle_offset());
 553         Angle::deg angle(360.0/points);
 554         Real tangent(4 * ((points == 2)
 555                                           ? 1
 556                                           : ((2 * Angle::cos(angle/2).get() - Angle::cos(angle).get() - 1) / Angle::sin(angle).get())));
 557         Real x(p1[0]), y(p1[1]);
 558
 559         std::vector<BLinePoint> new_list;
 560         for (int i = 0; i < points; i++)
 561         {
 562                 new_list.push_back(*(new BLinePoint));
 563                 new_list[i].set_width(1);
 564                 new_list[i].set_vertex(Point(radius*Angle::cos(angle*i + offset).get() + x,
 565                                                                          radius*Angle::sin(angle*i + offset).get() + y));
 566                 new_list[i].set_tangent(Point(-radius*tangent*Angle::sin(angle*i + offset).get(),
 567                                                                            radius*tangent*Angle::cos(angle*i + offset).get()));
 568         }
 569
 570         ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
 571         assert(value_node_bline);
 572
 573         ValueNode_Const::Handle value_node_origin(ValueNode_Const::create(Vector()));
 574         assert(value_node_origin);
 575
 576         // Set the looping flag
 577         value_node_bline->set_loop(true);
 578
 579         if(!canvas)
 580                 canvas=get_canvas_view()->get_canvas();
 581
 582         value_node_bline->set_member_canvas(canvas);
 583
 584         // count how many layers we're going to be creating
 585         int layers_to_create = this->layers_to_create();
 586
 587         ///////////////////////////////////////////////////////////////////////////
 588         //   C I R C L E
 589         ///////////////////////////////////////////////////////////////////////////
 590
 591         if (get_layer_circle_flag() &&
 592                 get_falloff() >= 0 && get_falloff() < CIRCLE_NUM_FALLOFF)
 593         {
 594                 layer=get_canvas_interface()->add_layer_to("circle",canvas,depth);
 595                 layer_selection.push_back(layer);
 596
 597                 layer->set_param("origin",p1);
 598                 get_canvas_interface()->signal_layer_param_changed()(layer,"origin");
 599
 600                 layer->set_param("radius",(p2-p1).mag());
 601                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
 602
 603                 layer->set_param("falloff",get_falloff());
 604                 get_canvas_interface()->signal_layer_param_changed()(layer,"falloff");
 605
 606                 layer->set_param("feather",get_feather());
 607                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 608
 609                 layer->set_param("invert",get_invert());
 610                 get_canvas_interface()->signal_layer_param_changed()(layer,"invert");
 611
 612 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 613                 layer->set_param("blend_method",get_blend());
 614                 get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 615 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 616
 617                 layer->set_description(get_id());
 618                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 619
 620                 if(get_layer_outline_flag())
 621                 {
 622                         layer->set_param("color",synfigapp::Main::get_background_color());
 623                         get_canvas_interface()->signal_layer_param_changed()(layer,"color");
 624                 }
 625         }
 626
 627         ///////////////////////////////////////////////////////////////////////////
 628         //   C U R V E   G R A D I E N T
 629         ///////////////////////////////////////////////////////////////////////////
 630
 631         if(get_layer_curve_gradient_flag())
 632         {
 633                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 634
 635                 Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
 636                 assert(layer);
 637                 layer_selection.push_back(layer);
 638                 layer->set_description(get_id()+_(" Gradient"));
 639                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 640
 641 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 642                 layer->set_param("blend_method",get_blend());
 643                 get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 644 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 645
 646                 {
 647                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 648                         assert(action);
 649
 650                         action->set_param("canvas",get_canvas());
 651                         action->set_param("canvas_interface",get_canvas_interface());
 652                         action->set_param("layer",layer);
 653                         if(!action->set_param("param",String("bline")))
 654                                 synfig::error("LayerParamConnect didn't like \"param\"");
 655                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 656                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 657
 658                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 659                         {
 660                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 661                                 group.cancel();
 662                                 throw String(_("Unable to create Gradient layer"));
 663                                 return;
 664                         }
 665                 }
 666
 667                 // only link the curve gradient's origin parameter if the option is selected and we're creating more than one layer
 668                 if (get_layer_link_origins_flag() && layers_to_create > 1)
 669                 {
 670                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 671                         assert(action);
 672
 673                         action->set_param("canvas",get_canvas());
 674                         action->set_param("canvas_interface",get_canvas_interface());
 675                         action->set_param("layer",layer);
 676                         if(!action->set_param("param",String("origin")))
 677                                 synfig::error("LayerParamConnect didn't like \"param\"");
 678                         if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 679                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 680
 681                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 682                         {
 683                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 684                                 group.cancel();
 685                                 throw String(_("Unable to create Gradient layer"));
 686                                 return;
 687                         }
 688                 }
 689         }
 690
 691         ///////////////////////////////////////////////////////////////////////////
 692         //   P L A N T
 693         ///////////////////////////////////////////////////////////////////////////
 694
 695         if(get_layer_plant_flag())
 696         {
 697                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 698
 699                 Layer::Handle layer(get_canvas_interface()->add_layer_to("plant",canvas,depth));
 700                 assert(layer);
 701                 layer_selection.push_back(layer);
 702                 layer->set_description(get_id()+_(" Plant"));
 703                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 704
 705 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 706                 layer->set_param("blend_method",get_blend());
 707                 get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 708 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 709
 710                 {
 711                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 712                         assert(action);
 713
 714                         action->set_param("canvas",get_canvas());
 715                         action->set_param("canvas_interface",get_canvas_interface());
 716                         action->set_param("layer",layer);
 717                         if(!action->set_param("param",String("bline")))
 718                                 synfig::error("LayerParamConnect didn't like \"param\"");
 719                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 720                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 721
 722                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 723                         {
 724                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 725                                 group.cancel();
 726                                 throw String(_("Unable to create Plant layer"));
 727                                 return;
 728                         }
 729                 }
 730
 731                 // only link the plant's origin parameter if the option is selected and we're creating more than one layer
 732                 if (get_layer_link_origins_flag() && layers_to_create > 1)
 733                 {
 734                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 735                         assert(action);
 736
 737                         action->set_param("canvas",get_canvas());
 738                         action->set_param("canvas_interface",get_canvas_interface());
 739                         action->set_param("layer",layer);
 740                         if(!action->set_param("param",String("origin")))
 741                                 synfig::error("LayerParamConnect didn't like \"param\"");
 742                         if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 743                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 744
 745                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 746                         {
 747                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 748                                 group.cancel();
 749                                 throw String(_("Unable to create Plant layer"));
 750                                 return;
 751                         }
 752                 }
 753         }
 754
 755         ///////////////////////////////////////////////////////////////////////////
 756         //   R E G I O N
 757         ///////////////////////////////////////////////////////////////////////////
 758
 759         if(get_layer_region_flag())
 760         {
 761                 synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 762
 763                 Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
 764                 assert(layer);
 765                 layer_selection.push_back(layer);
 766                 layer->set_description(get_id()+_(" Region"));
 767                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 768
 769 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 770                 layer->set_param("blend_method",get_blend());
 771                 get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 772 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 773
 774                 layer->set_param("feather",get_feather());
 775                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 776
 777                 layer->set_param("invert",get_invert());
 778                 get_canvas_interface()->signal_layer_param_changed()(layer,"invert");
 779
 780                 if(get_layer_outline_flag())
 781                         layer->set_param("color",synfigapp::Main::get_background_color());
 782
 783                 // I don't know if it's safe to reuse the same layer_param_connect action, so I'm
 784                 // using 2 separate ones.
 785                 {
 786                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 787                         assert(action);
 788
 789                         action->set_param("canvas",get_canvas());
 790                         action->set_param("canvas_interface",get_canvas_interface());
 791                         action->set_param("layer",layer);
 792                         if(!action->set_param("param",String("bline")))
 793                                 synfig::error("LayerParamConnect didn't like \"param\"");
 794                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 795                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 796
 797                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 798                         {
 799                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 800                                 group.cancel();
 801                                 throw String(_("Unable to create Region layer"));
 802                                 return;
 803                         }
 804                 }
 805
 806                 // only link the region's origin parameter if the option is selected and we're creating more than one layer
 807                 if (get_layer_link_origins_flag() && layers_to_create > 1)
 808                 {
 809                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 810                         assert(action);
 811
 812                         action->set_param("canvas",get_canvas());
 813                         action->set_param("canvas_interface",get_canvas_interface());
 814                         action->set_param("layer",layer);
 815                         if(!action->set_param("param",String("origin")))
 816                                 synfig::error("LayerParamConnect didn't like \"param\"");
 817                         if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 818                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 819
 820                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 821                         {
 822                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 823                                 group.cancel();
 824                                 throw String(_("Unable to create Region layer"));
 825                                 return;
 826                         }
 827                 }
 828         }
 829
 830         ///////////////////////////////////////////////////////////////////////////
 831         //   O U T L I N E
 832         ///////////////////////////////////////////////////////////////////////////
 833
 834         if (get_layer_outline_flag())
 835         {
 836                 Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
 837                 assert(layer);
 838                 layer_selection.push_back(layer);
 839                 layer->set_description(get_id()+_(" Outline"));
 840                 get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 841
 842 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 843                 layer->set_param("blend_method",get_blend());
 844                 get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 845 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 846
 847                 layer->set_param("feather",get_feather());
 848                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 849
 850                 layer->set_param("invert",get_invert());
 851                 get_canvas_interface()->signal_layer_param_changed()(layer,"invert");
 852
 853                 {
 854                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 855                         assert(action);
 856
 857                         action->set_param("canvas",get_canvas());
 858                         action->set_param("canvas_interface",get_canvas_interface());
 859                         action->set_param("layer",layer);
 860                         if(!action->set_param("param",String("bline")))
 861                                 synfig::error("LayerParamConnect didn't like \"param\"");
 862                         if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 863                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 864
 865                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 866                         {
 867                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 868                                 group.cancel();
 869                                 throw String(_("Unable to create Outline layer"));
 870                                 return;
 871                         }
 872                 }
 873
 874                 // only link the outline's origin parameter if the option is selected and we're creating more than one layer
 875                 if (get_layer_link_origins_flag() && layers_to_create > 1)
 876                 {
 877                         synfigapp::Action::Handle action(synfigapp::Action::create("layer_param_connect"));
 878                         assert(action);
 879
 880                         action->set_param("canvas",get_canvas());
 881                         action->set_param("canvas_interface",get_canvas_interface());
 882                         action->set_param("layer",layer);
 883                         if(!action->set_param("param",String("origin")))
 884                                 synfig::error("LayerParamConnect didn't like \"param\"");
 885                         if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 886                                 synfig::error("LayerParamConnect didn't like \"value_node\"");
 887
 888                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 889                         {
 890                                 //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 891                                 group.cancel();
 892                                 throw String(_("Unable to create Outline layer"));
 893                                 return;
 894                         }
 895                 }
 896         }
 897
 898         egress_on_selection_change=false;
 899         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 900         get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
 901         egress_on_selection_change=true;
 902
 903         reset();
 904         increment_id();
 905 }
 906
 907 Smach::event_result
 908 StateCircle_Context::event_mouse_click_handler(const Smach::event& x)
 909 {
 910         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 911
 912         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DOWN && event.button==BUTTON_LEFT)
 913         {
 914                 point_holder=get_work_area()->snap_point_to_grid(event.pos);
 915                 etl::handle<Duck> duck=new Duck();
 916                 duck->set_point(point_holder);
 917                 duck->set_name("p1");
 918                 duck->set_type(Duck::TYPE_POSITION);
 919                 duck->set_editable(false);
 920                 get_work_area()->add_duck(duck);
 921
 922                 point2_duck=new Duck();
 923                 point2_duck->set_point(Vector(0,0));
 924                 point2_duck->set_name("radius");
 925                 point2_duck->set_origin(duck);
 926                 point2_duck->set_radius(true);
 927                 point2_duck->set_scalar(-1);
 928                 point2_duck->set_type(Duck::TYPE_RADIUS);
 929                 point2_duck->set_hover(true);
 930                 get_work_area()->add_duck(point2_duck);
 931
 932                 return Smach::RESULT_ACCEPT;
 933         }
 934
 935         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DRAG && event.button==BUTTON_LEFT)
 936         {
 937                 if (!point2_duck) return Smach::RESULT_OK;
 938                 point2_duck->set_point(point_holder-get_work_area()->snap_point_to_grid(event.pos));
 939                 get_work_area()->queue_draw();
 940                 return Smach::RESULT_ACCEPT;
 941         }
 942
 943         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_UP && event.button==BUTTON_LEFT)
 944         {
 945                 Point point(get_work_area()->snap_point_to_grid(event.pos));
 946
 947                 if (App::restrict_radius_ducks)
 948                 {
 949                         if ((point[0] - point_holder[0]) < 0) point[0] = point_holder[0];
 950                         if ((point[1] - point_holder[1]) < 0) point[1] = point_holder[1];
 951                 }
 952
 953                 make_circle(point_holder, point);
 954                 get_work_area()->clear_ducks();
 955                 return Smach::RESULT_ACCEPT;
 956         }
 957
 958         return Smach::RESULT_OK;
 959 }
 960
 961
 962 void
 963 StateCircle_Context::refresh_ducks()
 964 {
 965         get_work_area()->clear_ducks();
 966         get_work_area()->queue_draw();
 967 }