synfig-studio/src/gtkmm/state_transform.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_transform.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_animated.h>
  37 #include <synfig/valuenode_composite.h>
  38 #include <synfig/valuenode_const.h>
  39 #include <synfig/valuenode_dynamiclist.h>
  40 #include <synfigapp/action_system.h>
  41
  42 #include "state_transform.h"
  43 #include "canvasview.h"
  44 #include "workarea.h"
  45 #include "app.h"
  46
  47 #include <synfigapp/action.h>
  48 #include "event_mouse.h"
  49 #include "event_layerclick.h"
  50 #include "toolbox.h"
  51 #include "dialog_tooloptions.h"
  52 #include <gtkmm/optionmenu.h>
  53 #include "duck.h"
  54 #include <synfig/angle.h>
  55 #include <synfigapp/main.h>
  56
  57 #include "general.h"
  58 #endif
  59
  60 /* === U S I N G =========================================================== */
  61
  62 using namespace std;
  63 using namespace etl;
  64 using namespace synfig;
  65 using namespace studio;
  66
  67 /* === M A C R O S ========================================================= */
  68
  69 #ifndef EPSILON
  70 #define EPSILON 0.0000001
  71 #endif
  72
  73 /* === G L O B A L S ======================================================= */
  74
  75 StateTransform studio::state_transform;
  76
  77 /* === C L A S S E S & S T R U C T S ======================================= */
  78
  79 class DuckDrag_Combo : public DuckDrag_Base
  80 {
  81         synfig::Vector last_move;
  82         synfig::Vector drag_offset;
  83         synfig::Vector center;
  84         synfig::Vector snap;
  85
  86         synfig::Angle original_angle;
  87         synfig::Real original_mag;
  88
  89         std::vector<synfig::Vector> last_;
  90         std::vector<synfig::Vector> positions;
  91
  92
  93         bool bad_drag;
  94         bool move_only;
  95
  96 public:
  97         etl::handle<CanvasView> canvas_view_;
  98         bool scale;
  99         bool rotate;
 100         bool constrain;
 101         DuckDrag_Combo();
 102         void begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& begin);
 103         bool end_duck_drag(Duckmatic* duckmatic);
 104         void duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector);
 105
 106         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 107 };
 108
 109
 110 class studio::StateTransform_Context : public sigc::trackable
 111 {
 112         etl::handle<CanvasView> canvas_view_;
 113
 114         synfigapp::Settings& settings;
 115
 116         sigc::connection keypress_connect;
 117         sigc::connection keyrelease_connect;
 118
 119         etl::handle<DuckDrag_Combo> duck_dragger_;
 120
 121         Gtk::Table options_table;
 122
 123         Gtk::CheckButton checkbutton_rotate;
 124         Gtk::CheckButton checkbutton_scale;
 125         Gtk::CheckButton checkbutton_constrain;
 126
 127 public:
 128
 129         bool get_rotate_flag()const { return checkbutton_rotate.get_active(); }
 130         void set_rotate_flag(bool x) { checkbutton_rotate.set_active(x); refresh_rotate_flag(); }
 131         void refresh_rotate_flag() { if(duck_dragger_)duck_dragger_->rotate=get_rotate_flag(); }
 132
 133         bool get_scale_flag()const { return checkbutton_scale.get_active(); }
 134         void set_scale_flag(bool x) { checkbutton_scale.set_active(x); refresh_scale_flag(); }
 135         void refresh_scale_flag() { if(duck_dragger_)duck_dragger_->scale=get_scale_flag(); }
 136
 137         bool get_constrain_flag()const { return checkbutton_constrain.get_active(); }
 138         void set_constrain_flag(bool x) { checkbutton_constrain.set_active(x); refresh_constrain_flag(); }
 139         void refresh_constrain_flag() { if(duck_dragger_)duck_dragger_->constrain=get_constrain_flag(); }
 140
 141         Smach::event_result event_stop_handler(const Smach::event& x);
 142         Smach::event_result event_refresh_handler(const Smach::event& x);
 143         Smach::event_result event_refresh_ducks_handler(const Smach::event& x);
 144         Smach::event_result event_undo_handler(const Smach::event& x);
 145         Smach::event_result event_redo_handler(const Smach::event& x);
 146         Smach::event_result event_mouse_button_down_handler(const Smach::event& x);
 147         Smach::event_result event_multiple_ducks_clicked_handler(const Smach::event& x);
 148         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 149         Smach::event_result event_layer_click(const Smach::event& x);
 150
 151         void refresh_tool_options();
 152
 153         StateTransform_Context(CanvasView* canvas_view);
 154
 155         ~StateTransform_Context();
 156
 157         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 158         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 159         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 160         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 161
 162         void load_settings();
 163         void save_settings();
 164
 165         bool key_pressed(GdkEventKey *event);
 166         bool key_released(GdkEventKey *event);
 167
 168 };      // END of class StateTransform_Context
 169
 170 /* === M E T H O D S ======================================================= */
 171
 172 StateTransform::StateTransform():
 173         Smach::state<StateTransform_Context>("transform")
 174 {
 175         insert(event_def(EVENT_STOP,&StateTransform_Context::event_stop_handler));
 176         insert(event_def(EVENT_REFRESH,&StateTransform_Context::event_refresh_handler));
 177         insert(event_def(EVENT_REFRESH_DUCKS,&StateTransform_Context::event_refresh_ducks_handler));
 178         insert(event_def(EVENT_UNDO,&StateTransform_Context::event_undo_handler));
 179         insert(event_def(EVENT_REDO,&StateTransform_Context::event_redo_handler));
 180         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateTransform_Context::event_mouse_button_down_handler));
 181         insert(event_def(EVENT_WORKAREA_MULTIPLE_DUCKS_CLICKED,&StateTransform_Context::event_multiple_ducks_clicked_handler));
 182         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateTransform_Context::event_refresh_tool_options));
 183         insert(event_def(EVENT_WORKAREA_LAYER_CLICKED,&StateTransform_Context::event_layer_click));
 184 }
 185
 186 StateTransform::~StateTransform()
 187 {
 188 }
 189
 190 void
 191 StateTransform_Context::load_settings()
 192 {
 193         String value;
 194
 195         if(settings.get_value("transform.rotate",value) && value=="1")
 196                 set_rotate_flag(true);
 197         else
 198                 set_rotate_flag(false);
 199
 200         if(settings.get_value("transform.scale",value) && value=="1")
 201                 set_scale_flag(true);
 202         else
 203                 set_scale_flag(false);
 204
 205         if(settings.get_value("transform.constrain",value) && value=="1")
 206                 set_constrain_flag(true);
 207         else
 208                 set_constrain_flag(false);
 209
 210 }
 211
 212 void
 213 StateTransform_Context::save_settings()
 214 {
 215         settings.set_value("transform.rotate",get_rotate_flag()?"1":"0");
 216         settings.set_value("transform.scale",get_scale_flag()?"1":"0");
 217         settings.set_value("transform.constrain",get_constrain_flag()?"1":"0");
 218 }
 219
 220 StateTransform_Context::StateTransform_Context(CanvasView* canvas_view):
 221         canvas_view_(canvas_view),
 222         settings(synfigapp::Main::get_selected_input_device()->settings()),
 223         duck_dragger_(new DuckDrag_Combo()),
 224         checkbutton_rotate(_("Rotate (Ctrl)")),
 225         checkbutton_scale(_("Scale (Alt)")),
 226         checkbutton_constrain(_("Constrain (Shift)"))
 227 {
 228         duck_dragger_->canvas_view_=get_canvas_view();
 229
 230         // Set up the tool options dialog
 231         options_table.attach(*manage(new Gtk::Label(_("Transform Tool"))),      0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 232         options_table.attach(checkbutton_rotate,                                                        0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 233         options_table.attach(checkbutton_scale,                                                 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 234         options_table.attach(checkbutton_constrain,                                                     0, 2, 3, 4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 235
 236         checkbutton_rotate.signal_toggled().connect(sigc::mem_fun(*this,&StateTransform_Context::refresh_rotate_flag));
 237         checkbutton_scale.signal_toggled().connect(sigc::mem_fun(*this,&StateTransform_Context::refresh_scale_flag));
 238         checkbutton_constrain.signal_toggled().connect(sigc::mem_fun(*this,&StateTransform_Context::refresh_constrain_flag));
 239
 240
 241         options_table.show_all();
 242         refresh_tool_options();
 243         //App::dialog_tool_options->set_widget(options_table);
 244         App::dialog_tool_options->present();
 245
 246         get_work_area()->set_allow_layer_clicks(true);
 247         get_work_area()->set_duck_dragger(duck_dragger_);
 248
 249         keypress_connect=get_work_area()->signal_key_press_event().connect(sigc::mem_fun(*this,&StateTransform_Context::key_pressed),false);
 250         keyrelease_connect=get_work_area()->signal_key_release_event().connect(sigc::mem_fun(*this,&StateTransform_Context::key_released),false);
 251
 252 //      get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 253         get_canvas_view()->work_area->reset_cursor();
 254
 255         App::toolbox->refresh();
 256
 257         load_settings();
 258         refresh_scale_flag();
 259 }
 260
 261 bool
 262 StateTransform_Context::key_pressed(GdkEventKey *event)
 263 {
 264         switch(event->keyval)
 265         {
 266                 case GDK_Control_L:
 267                 case GDK_Control_R:
 268                         set_rotate_flag(true);
 269                         break;
 270                 case GDK_Alt_L:
 271                 case GDK_Alt_R:
 272                         set_scale_flag(true);
 273                         break;
 274                 case GDK_Shift_L:
 275                 case GDK_Shift_R:
 276                         set_constrain_flag(true);
 277                         break;
 278                 default:
 279                         break;
 280         }
 281         return false; //Pass on the event to other handlers, just in case
 282 }
 283
 284 bool
 285 StateTransform_Context::key_released(GdkEventKey *event)
 286 {
 287         switch(event->keyval)
 288         {
 289                 case GDK_Control_L:
 290                 case GDK_Control_R:
 291                         set_rotate_flag(false);
 292                         break;
 293                 case GDK_Alt_L:
 294                 case GDK_Alt_R:
 295                         set_scale_flag(false);
 296                         break;
 297                 case GDK_Shift_L:
 298                 case GDK_Shift_R:
 299                         set_constrain_flag(false);
 300                         break;
 301                 default:
 302                         break;
 303         }
 304         return false; //Pass on the event to other handlers
 305 }
 306
 307 void
 308 StateTransform_Context::refresh_tool_options()
 309 {
 310         App::dialog_tool_options->clear();
 311         App::dialog_tool_options->set_widget(options_table);
 312         App::dialog_tool_options->set_local_name(_("Transform Tool"));
 313         App::dialog_tool_options->set_name("transform");
 314 }
 315
 316
 317
 318 StateTransform_Context::~StateTransform_Context()
 319 {
 320         save_settings();
 321
 322         get_work_area()->clear_duck_dragger();
 323         get_canvas_view()->work_area->reset_cursor();
 324
 325         keypress_connect.disconnect();
 326         keyrelease_connect.disconnect();
 327
 328         App::dialog_tool_options->clear();
 329
 330         App::toolbox->refresh();
 331 }
 332
 333
 334 Smach::event_result
 335 StateTransform_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 336 {
 337         refresh_tool_options();
 338         return Smach::RESULT_ACCEPT;
 339 }
 340
 341 Smach::event_result
 342 StateTransform_Context::event_stop_handler(const Smach::event& /*x*/)
 343 {
 344         // synfig::info("STATE TRANSFORM: Received Stop Event");
 345         canvas_view_->stop();
 346         return Smach::RESULT_ACCEPT;
 347 }
 348
 349 Smach::event_result
 350 StateTransform_Context::event_refresh_handler(const Smach::event& /*x*/)
 351 {
 352         // synfig::info("STATE TRANSFORM: Received Refresh Event");
 353         canvas_view_->rebuild_tables();
 354         canvas_view_->work_area->queue_render_preview();
 355         return Smach::RESULT_ACCEPT;
 356 }
 357
 358 Smach::event_result
 359 StateTransform_Context::event_refresh_ducks_handler(const Smach::event& /*x*/)
 360 {
 361         // synfig::info("STATE TRANSFORM: Received Refresh Ducks");
 362         canvas_view_->queue_rebuild_ducks();
 363         return Smach::RESULT_ACCEPT;
 364 }
 365
 366 Smach::event_result
 367 StateTransform_Context::event_undo_handler(const Smach::event& /*x*/)
 368 {
 369         // synfig::info("STATE TRANSFORM: Received Undo Event");
 370         canvas_view_->get_instance()->undo();
 371         return Smach::RESULT_ACCEPT;
 372 }
 373
 374 Smach::event_result
 375 StateTransform_Context::event_redo_handler(const Smach::event& /*x*/)
 376 {
 377         // synfig::info("STATE TRANSFORM: Received Redo Event");
 378         canvas_view_->get_instance()->redo();
 379         return Smach::RESULT_ACCEPT;
 380 }
 381
 382 Smach::event_result
 383 StateTransform_Context::event_mouse_button_down_handler(const Smach::event& x)
 384 {
 385         // synfig::info("STATE TRANSFORM: Received mouse button down Event");
 386
 387         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 388
 389         switch(event.button)
 390         {
 391         case BUTTON_RIGHT:
 392                 canvas_view_->popup_main_menu();
 393                 return Smach::RESULT_ACCEPT;
 394         default:
 395                 return Smach::RESULT_OK;
 396         }
 397 }
 398
 399 Smach::event_result
 400 StateTransform_Context::event_layer_click(const Smach::event& x)
 401 {
 402         const EventLayerClick& event(*reinterpret_cast<const EventLayerClick*>(&x));
 403
 404         if(event.layer)
 405         {
 406                 // synfig::info("STATE TRANSFORM: Received layer click Event, \"%s\"",event.layer->get_name().c_str());
 407         }
 408         else
 409         {
 410                 // synfig::info("STATE TRANSFORM: Received layer click Event with an empty layer.");
 411         }
 412
 413         switch(event.button)
 414         {
 415         case BUTTON_LEFT:
 416                 if(!(event.modifier&Gdk::CONTROL_MASK))
 417                         canvas_view_->get_selection_manager()->clear_selected_layers();
 418                 if(event.layer)
 419                 {
 420                         std::list<Layer::Handle> layer_list(canvas_view_->get_selection_manager()->get_selected_layers());
 421                         std::set<Layer::Handle> layers(layer_list.begin(),layer_list.end());
 422                         if(layers.count(event.layer))
 423                         {
 424                                 layers.erase(event.layer);
 425                                 layer_list=std::list<Layer::Handle>(layers.begin(),layers.end());
 426                                 canvas_view_->get_selection_manager()->clear_selected_layers();
 427                                 canvas_view_->get_selection_manager()->set_selected_layers(layer_list);
 428                         }
 429                         else
 430                         {
 431                                 canvas_view_->get_selection_manager()->set_selected_layer(event.layer);
 432                         }
 433                 }
 434                 return Smach::RESULT_ACCEPT;
 435         case BUTTON_RIGHT:
 436                 canvas_view_->popup_layer_menu(event.layer);
 437                 return Smach::RESULT_ACCEPT;
 438         default:
 439                 return Smach::RESULT_OK;
 440         }
 441 }
 442
 443 /*
 444 void
 445 StateTransform_Context::edit_several_waypoints(std::list<synfigapp::ValueDesc> value_desc_list)
 446 {
 447         Gtk::Dialog dialog(
 448                 "Edit Multiple Waypoints",              // Title
 449                 true,           // Modal
 450                 true            // use_separator
 451         );
 452
 453         Widget_WaypointModel widget_waypoint_model;
 454         widget_waypoint_model.show();
 455
 456         dialog.get_vbox()->pack_start(widget_waypoint_model);
 457
 458
 459         dialog.add_button(Gtk::StockID("gtk-apply"),1);
 460         dialog.add_button(Gtk::StockID("gtk-cancel"),0);
 461         dialog.show();
 462
 463         if(dialog.run()==0)
 464                 return;
 465         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Set Waypoints"));
 466
 467         std::list<synfigapp::ValueDesc>::iterator iter;
 468         for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)
 469         {
 470                 synfigapp::ValueDesc value_desc(*iter);
 471
 472                 if(!value_desc.is_valid())
 473                         continue;
 474
 475                 ValueNode_Animated::Handle value_node;
 476
 477                 // If this value isn't a ValueNode_Animated, but
 478                 // it is somewhat constant, then go ahead and convert
 479                 // it to a ValueNode_Animated.
 480                 if(!value_desc.is_value_node() || ValueNode_Const::Handle::cast_dynamic(value_desc.get_value_node()))
 481                 {
 482                         ValueBase value;
 483                         if(value_desc.is_value_node())
 484                                 value=ValueNode_Const::Handle::cast_dynamic(value_desc.get_value_node())->get_value();
 485                         else
 486                                 value=value_desc.get_value();
 487
 488                         value_node=ValueNode_Animated::create(value,get_canvas()->get_time());
 489
 490                         synfigapp::Action::Handle action;
 491
 492                         if(!value_desc.is_value_node())
 493                         {
 494                                 action=synfigapp::Action::create("ValueDescConnect");
 495                                 action->set_param("dest",value_desc);
 496                                 action->set_param("src",ValueNode::Handle(value_node));
 497                         }
 498                         else
 499                         {
 500                                 action=synfigapp::Action::create("ValueNodeReplace");
 501                                 action->set_param("dest",value_desc.get_value_node());
 502                                 action->set_param("src",ValueNode::Handle(value_node));
 503                         }
 504
 505                         action->set_param("canvas",get_canvas());
 506                         action->set_param("canvas_interface",get_canvas_interface());
 507
 508
 509                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 510                         {
 511                                 get_canvas_view()->get_ui_interface()->error(_("Unable to convert to animated waypoint"));
 512                                 group.cancel();
 513                                 return;
 514                         }
 515                 }
 516                 else
 517                 {
 518                         if(value_desc.is_value_node())
 519                                 value_node=ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node());
 520                 }
 521
 522
 523                 if(value_node)
 524                 {
 525
 526                         synfigapp::Action::Handle action(synfigapp::Action::create("WaypointSetSmart"));
 527
 528                         if(!action)
 529                         {
 530                                 get_canvas_view()->get_ui_interface()->error(_("Unable to find WaypointSetSmart action"));
 531                                 group.cancel();
 532                                 return;
 533                         }
 534
 535
 536                         action->set_param("canvas",get_canvas());
 537                         action->set_param("canvas_interface",get_canvas_interface());
 538                         action->set_param("value_node",ValueNode::Handle(value_node));
 539                         action->set_param("time",get_canvas()->get_time());
 540                         action->set_param("model",widget_waypoint_model.get_waypoint_model());
 541
 542                         if(!get_canvas_interface()->get_instance()->perform_action(action))
 543                         {
 544                                 get_canvas_view()->get_ui_interface()->error(_("Unable to set a specific waypoint"));
 545                                 group.cancel();
 546                                 return;
 547                         }
 548                 }
 549                 else
 550                 {
 551                         //get_canvas_view()->get_ui_interface()->error(_("Unable to animate a specific valuedesc"));
 552                         //group.cancel();
 553                         //return;
 554                 }
 555
 556         }
 557 }
 558 */
 559
 560 Smach::event_result
 561 StateTransform_Context::event_multiple_ducks_clicked_handler(const Smach::event& /*x*/)
 562 {
 563         // synfig::info("STATE TRANSFORM: Received multiple duck click event");
 564
 565         //const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 566
 567         std::list<synfigapp::ValueDesc> value_desc_list;
 568
 569         // Create a list of value_descs associated with selection
 570         const DuckList selected_ducks(get_work_area()->get_selected_ducks());
 571         DuckList::const_iterator iter;
 572         for(iter=selected_ducks.begin();iter!=selected_ducks.end();++iter)
 573         {
 574                 synfigapp::ValueDesc value_desc((*iter)->get_value_desc());
 575
 576                 if(!value_desc.is_valid())
 577                         continue;
 578
 579                 if(value_desc.get_value_type()==ValueBase::TYPE_BLINEPOINT && value_desc.is_value_node() && ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node()))
 580                 {
 581                         value_desc_list.push_back(
 582                                 synfigapp::ValueDesc(
 583                                         ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())
 584                                         ,ValueNode_Composite::Handle::cast_dynamic(value_desc.get_value_node())
 585                                                                ->get_link_index_from_name("point")
 586                                 )
 587                         );
 588                 }
 589                 else
 590                         value_desc_list.push_back(value_desc);
 591         }
 592
 593         Gtk::Menu *menu=manage(new Gtk::Menu());
 594         menu->signal_hide().connect(sigc::bind(sigc::ptr_fun(&delete_widget), menu));
 595
 596         canvas_view_->get_instance()->make_param_menu(menu,canvas_view_->get_canvas(),value_desc_list);
 597
 598         /*
 599         synfigapp::Action::ParamList param_list;
 600         param_list=get_canvas_interface()->generate_param_list(value_desc_list);
 601
 602         canvas_view_->add_actions_to_menu(menu, param_list,synfigapp::Action::CATEGORY_VALUEDESC|synfigapp::Action::CATEGORY_VALUENODE);
 603
 604         menu->items().push_back(Gtk::Menu_Helpers::MenuElem(_("Edit Waypoints"),
 605                 sigc::bind(
 606                         sigc::mem_fun(
 607                                 *this,
 608                                 &studio::StateTransform_Context::edit_several_waypoints
 609                         ),
 610                         value_desc_list
 611                 )
 612         ));
 613         */
 614         menu->popup(3,gtk_get_current_event_time());
 615
 616         return Smach::RESULT_ACCEPT;
 617 }
 618
 619 DuckDrag_Combo::DuckDrag_Combo():
 620         scale(false),
 621         rotate(false),
 622         constrain(false) // Lock aspect for scale; smooth move for translate
 623 {
 624 }
 625
 626 void
 627 DuckDrag_Combo::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 628 {
 629         last_move=Vector(1,1);
 630
 631         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 632         DuckList::const_iterator iter;
 633
 634         bad_drag=false;
 635
 636                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 637
 638                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 639                 //snap=offset-drag_offset_;
 640                 snap=Vector(0,0);
 641
 642         // Calculate center
 643         Point vmin(100000000,100000000);
 644         Point vmax(-100000000,-100000000);
 645         //std::set<etl::handle<Duck> >::iterator iter;
 646         positions.clear();
 647         int i;
 648         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 649         {
 650                 Point p((*iter)->get_trans_point());
 651                 vmin[0]=min(vmin[0],p[0]);
 652                 vmin[1]=min(vmin[1],p[1]);
 653                 vmax[0]=max(vmax[0],p[0]);
 654                 vmax[1]=max(vmax[1],p[1]);
 655                 positions.push_back(p);
 656         }
 657         center=(vmin+vmax)*0.5;
 658         if((vmin-vmax).mag()<=EPSILON)
 659                 move_only=true;
 660         else
 661                 move_only=false;
 662
 663
 664         synfig::Vector vect(offset-center);
 665         original_angle=Angle::tan(vect[1],vect[0]);
 666         original_mag=vect.mag();
 667 }
 668
 669
 670 void
 671 DuckDrag_Combo::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 672 {
 673         if (!duckmatic) return;
 674
 675         if(bad_drag)
 676                 return;
 677
 678         //std::set<etl::handle<Duck> >::iterator iter;
 679         synfig::Vector vect;
 680         if (move_only || (!scale && !rotate))
 681                 vect= duckmatic->snap_point_to_grid(vector)-drag_offset+snap;
 682         else
 683                 vect= duckmatic->snap_point_to_grid(vector)-center+snap;
 684
 685         last_move=vect;
 686
 687         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 688         DuckList::const_iterator iter;
 689
 690         Time time(duckmatic->get_time());
 691
 692         int i;
 693         if( move_only || (!scale && !rotate) )
 694         {
 695                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 696                 {
 697                         if((*iter)->get_type()==Duck::TYPE_VERTEX || (*iter)->get_type()==Duck::TYPE_POSITION)
 698                                 (*iter)->set_trans_point(positions[i]+vect, time);
 699                 }
 700                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 701                 {
 702                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))
 703                                 (*iter)->set_trans_point(positions[i]+vect, time);
 704                 }
 705                 DuckList duck_list(duckmatic->get_duck_list());
 706                 for (iter=duck_list.begin(); iter!=duck_list.end(); ++iter)
 707                 {
 708                         if ((*iter)->get_type() == Duck::TYPE_TANGENT || (*iter)->get_type() == Duck::TYPE_WIDTH)
 709                         {
 710                                 (*iter)->update(time);
 711                         }
 712                 }
 713                 return;
 714         }
 715
 716         if (rotate)
 717         {
 718                 Angle::tan angle(vect[1],vect[0]);
 719                 angle=original_angle-angle;
 720                 Real mag(vect.mag()/original_mag);
 721                 Real sine(Angle::sin(angle).get());
 722                 Real cosine(Angle::cos(angle).get());
 723
 724                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 725                 {
 726                         if((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION)continue;
 727
 728                         Vector x(positions[i]-center),p;
 729
 730                         p[0]=cosine*x[0]+sine*x[1];
 731                         p[1]=-sine*x[0]+cosine*x[1];
 732                         if(scale)p*=mag;
 733                         p+=center;
 734                         (*iter)->set_trans_point(p);
 735                 }
 736                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 737                 {
 738                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 739
 740                         Vector x(positions[i]-center),p;
 741
 742                         p[0]=cosine*x[0]+sine*x[1];
 743                         p[1]=-sine*x[0]+cosine*x[1];
 744                         if(scale)p*=mag;
 745                         p+=center;
 746                         (*iter)->set_trans_point(p);
 747                 }
 748         } else if (scale)
 749         {
 750                 if(!constrain)
 751                 {
 752                         if(abs(drag_offset[0]-center[0])>EPSILON)
 753                                 vect[0]/=drag_offset[0]-center[0];
 754                         else
 755                                 vect[0]=1;
 756                         if(abs(drag_offset[1]-center[1])>EPSILON)
 757                                 vect[1]/=drag_offset[1]-center[1];
 758                         else
 759                                 vect[1]=1;
 760                         }
 761                 else
 762                 {
 763                         //vect[0]=vect[1]=vect.mag()*0.707106781;
 764                         Real amount(vect.mag()/(drag_offset-center).mag());
 765                         vect[0]=vect[1]=amount;
 766                 }
 767
 768                 if(vect[0]<EPSILON && vect[0]>-EPSILON)
 769                         vect[0]=1;
 770                 if(vect[1]<EPSILON && vect[1]>-EPSILON)
 771                         vect[1]=1;
 772
 773                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 774                 {
 775                         if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 776
 777                         Vector p(positions[i]-center);
 778
 779                         p[0]*=vect[0];
 780                         p[1]*=vect[1];
 781                         p+=center;
 782                         (*iter)->set_trans_point(p);
 783                 }
 784                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 785                 {
 786                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 787
 788                         Vector p(positions[i]-center);
 789
 790                         p[0]*=vect[0];
 791                         p[1]*=vect[1];
 792                         p+=center;
 793                         (*iter)->set_trans_point(p);
 794                 }
 795         }
 796         last_move=vect;
 797 }
 798
 799 bool
 800 DuckDrag_Combo::end_duck_drag(Duckmatic* duckmatic)
 801 {
 802         if(bad_drag)return false;
 803
 804         //synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Rotate Ducks"));
 805
 806         if((last_move-Vector(1,1)).mag()>0.0001)
 807         {
 808                 duckmatic->signal_edited_selected_ducks();
 809                 return true;
 810         }
 811         else
 812         {
 813                 duckmatic->signal_user_click_selected_ducks(0);
 814                 return false;
 815         }
 816 }