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