synfig-studio/src/gtkmm/state_normal.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_normal.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) 2007, 2008 Chris Moore
  10 **      Copyright (c) 2009 Nikita Kitaev
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33
  34 #include <gtkmm/dialog.h>
  35 #include <gtkmm/entry.h>
  36
  37 #include <synfig/valuenode_animated.h>
  38 #include <synfig/valuenode_blinecalcvertex.h>
  39 #include <synfig/valuenode_composite.h>
  40 #include <synfig/valuenode_const.h>
  41 #include <synfig/valuenode_dynamiclist.h>
  42 #include <synfigapp/action_system.h>
  43
  44 #include "state_normal.h"
  45 #include "canvasview.h"
  46 #include "workarea.h"
  47 #include "app.h"
  48
  49 #include <synfigapp/action.h>
  50 #include "event_mouse.h"
  51 #include "event_layerclick.h"
  52 #include "toolbox.h"
  53 #include "dialog_tooloptions.h"
  54 #include <gtkmm/optionmenu.h>
  55 #include "duck.h"
  56 #include <synfig/angle.h>
  57 #include <synfigapp/main.h>
  58
  59 #include "general.h"
  60 #endif
  61
  62 /* === U S I N G =========================================================== */
  63
  64 using namespace std;
  65 using namespace etl;
  66 using namespace synfig;
  67 using namespace studio;
  68
  69 /* === M A C R O S ========================================================= */
  70
  71 #ifndef EPSILON
  72 #define EPSILON 0.0000001
  73 #endif
  74
  75 /* === G L O B A L S ======================================================= */
  76
  77 StateNormal studio::state_normal;
  78
  79 /* === C L A S S E S & S T R U C T S ======================================= */
  80
  81 class DuckDrag_Combo : public DuckDrag_Base
  82 {
  83         synfig::Vector last_move;
  84         synfig::Vector drag_offset;
  85         synfig::Vector center;
  86         synfig::Vector snap;
  87
  88         synfig::Angle original_angle;
  89         synfig::Real original_mag;
  90
  91         std::vector<synfig::Vector> last_;
  92         std::vector<synfig::Vector> positions;
  93
  94
  95         bool bad_drag;
  96         bool move_only;
  97
  98 public:
  99         etl::handle<CanvasView> canvas_view_;
 100         bool scale;
 101         bool rotate;
 102         bool constrain;
 103         DuckDrag_Combo();
 104         void begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& begin);
 105         bool end_duck_drag(Duckmatic* duckmatic);
 106         void duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector);
 107
 108         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 109 };
 110
 111
 112 class studio::StateNormal_Context : public sigc::trackable
 113 {
 114         etl::handle<CanvasView> canvas_view_;
 115
 116         synfigapp::Settings& settings;
 117
 118         sigc::connection keypress_connect;
 119         sigc::connection keyrelease_connect;
 120
 121         etl::handle<DuckDrag_Combo> duck_dragger_;
 122
 123         Gtk::Table options_table;
 124
 125         Gtk::CheckButton checkbutton_rotate;
 126         Gtk::CheckButton checkbutton_scale;
 127         Gtk::CheckButton checkbutton_constrain;
 128
 129 public:
 130
 131         bool get_rotate_flag()const { return checkbutton_rotate.get_active(); }
 132         void set_rotate_flag(bool x) { checkbutton_rotate.set_active(x); refresh_rotate_flag(); }
 133         void refresh_rotate_flag() { if(duck_dragger_)duck_dragger_->rotate=get_rotate_flag(); }
 134
 135         bool get_scale_flag()const { return checkbutton_scale.get_active(); }
 136         void set_scale_flag(bool x) { checkbutton_scale.set_active(x); refresh_scale_flag(); }
 137         void refresh_scale_flag() { if(duck_dragger_)duck_dragger_->scale=get_scale_flag(); }
 138
 139         bool get_constrain_flag()const { return checkbutton_constrain.get_active(); }
 140         void set_constrain_flag(bool x) { checkbutton_constrain.set_active(x); refresh_constrain_flag(); }
 141         void refresh_constrain_flag() { if(duck_dragger_)duck_dragger_->constrain=get_constrain_flag(); }
 142
 143         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 144         void refresh_tool_options();
 145
 146         StateNormal_Context(CanvasView* canvas_view);
 147
 148         ~StateNormal_Context();
 149
 150         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 151         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 152         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 153         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 154
 155         void load_settings();
 156         void save_settings();
 157
 158         bool key_pressed(GdkEventKey *event);
 159         bool key_released(GdkEventKey *event);
 160
 161 };      // END of class StateNormal_Context
 162
 163 /* === M E T H O D S ======================================================= */
 164
 165 StateNormal::StateNormal():
 166         Smach::state<StateNormal_Context>("normal")
 167 {
 168         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateNormal_Context::event_refresh_tool_options));
 169 }
 170
 171 StateNormal::~StateNormal()
 172 {
 173 }
 174
 175 void
 176 StateNormal_Context::load_settings()
 177 {
 178         String value;
 179
 180         if(settings.get_value("normal.rotate",value) && value=="1")
 181                 set_rotate_flag(true);
 182         else
 183                 set_rotate_flag(false);
 184
 185         if(settings.get_value("normal.scale",value) && value=="1")
 186                 set_scale_flag(true);
 187         else
 188                 set_scale_flag(false);
 189
 190         if(settings.get_value("normal.constrain",value) && value=="1")
 191                 set_constrain_flag(true);
 192         else
 193                 set_constrain_flag(false);
 194
 195 }
 196
 197 void
 198 StateNormal_Context::save_settings()
 199 {
 200         settings.set_value("normal.rotate",get_rotate_flag()?"1":"0");
 201         settings.set_value("normal.scale",get_scale_flag()?"1":"0");
 202         settings.set_value("normal.constrain",get_constrain_flag()?"1":"0");
 203 }
 204
 205 StateNormal_Context::StateNormal_Context(CanvasView* canvas_view):
 206         canvas_view_(canvas_view),
 207         settings(synfigapp::Main::get_selected_input_device()->settings()),
 208         duck_dragger_(new DuckDrag_Combo()),
 209         checkbutton_rotate(_("Rotate (Ctrl)")),
 210         checkbutton_scale(_("Scale (Alt)")),
 211         checkbutton_constrain(_("Constrain (Shift)"))
 212 {
 213         duck_dragger_->canvas_view_=get_canvas_view();
 214
 215         // Set up the tool options dialog
 216         options_table.attach(*manage(new Gtk::Label(_("Normal Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 217         options_table.attach(checkbutton_rotate,                                                        0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 218         options_table.attach(checkbutton_scale,                                                 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 219         options_table.attach(checkbutton_constrain,                                                     0, 2, 3, 4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 220
 221         checkbutton_rotate.signal_toggled().connect(sigc::mem_fun(*this,&StateNormal_Context::refresh_rotate_flag));
 222         checkbutton_scale.signal_toggled().connect(sigc::mem_fun(*this,&StateNormal_Context::refresh_scale_flag));
 223         checkbutton_constrain.signal_toggled().connect(sigc::mem_fun(*this,&StateNormal_Context::refresh_constrain_flag));
 224
 225
 226         options_table.show_all();
 227         refresh_tool_options();
 228         //App::dialog_tool_options->set_widget(options_table);
 229         App::dialog_tool_options->present();
 230
 231         get_work_area()->set_allow_layer_clicks(true);
 232         get_work_area()->set_duck_dragger(duck_dragger_);
 233
 234         keypress_connect=get_work_area()->signal_key_press_event().connect(sigc::mem_fun(*this,&StateNormal_Context::key_pressed),false);
 235         keyrelease_connect=get_work_area()->signal_key_release_event().connect(sigc::mem_fun(*this,&StateNormal_Context::key_released),false);
 236
 237 //      get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 238         get_canvas_view()->work_area->reset_cursor();
 239
 240         App::toolbox->refresh();
 241
 242         load_settings();
 243         refresh_scale_flag();
 244 }
 245
 246 bool
 247 StateNormal_Context::key_pressed(GdkEventKey *event)
 248 {
 249         switch(event->keyval)
 250         {
 251                 case GDK_Control_L:
 252                 case GDK_Control_R:
 253                         set_rotate_flag(true);
 254                         break;
 255                 case GDK_Alt_L:
 256                 case GDK_Alt_R:
 257                         set_scale_flag(true);
 258                         break;
 259                 case GDK_Shift_L:
 260                 case GDK_Shift_R:
 261                         set_constrain_flag(true);
 262                         break;
 263                 default:
 264                         break;
 265         }
 266         return false; //Pass on the event to other handlers, just in case
 267 }
 268
 269 bool
 270 StateNormal_Context::key_released(GdkEventKey *event)
 271 {
 272         switch(event->keyval)
 273         {
 274                 case GDK_Control_L:
 275                 case GDK_Control_R:
 276                         set_rotate_flag(false);
 277                         break;
 278                 case GDK_Alt_L:
 279                 case GDK_Alt_R:
 280                         set_scale_flag(false);
 281                         break;
 282                 case GDK_Shift_L:
 283                 case GDK_Shift_R:
 284                         set_constrain_flag(false);
 285                         break;
 286                 default:
 287                         break;
 288         }
 289         return false; //Pass on the event to other handlers
 290 }
 291
 292 void
 293 StateNormal_Context::refresh_tool_options()
 294 {
 295         App::dialog_tool_options->clear();
 296         App::dialog_tool_options->set_widget(options_table);
 297         App::dialog_tool_options->set_local_name(_("Normal Tool"));
 298         App::dialog_tool_options->set_name("normal");
 299 }
 300
 301
 302
 303 StateNormal_Context::~StateNormal_Context()
 304 {
 305         save_settings();
 306
 307         get_work_area()->clear_duck_dragger();
 308         get_canvas_view()->work_area->reset_cursor();
 309
 310         keypress_connect.disconnect();
 311         keyrelease_connect.disconnect();
 312
 313         App::dialog_tool_options->clear();
 314
 315         App::toolbox->refresh();
 316 }
 317
 318
 319 Smach::event_result
 320 StateNormal_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 321 {
 322         refresh_tool_options();
 323         return Smach::RESULT_ACCEPT;
 324 }
 325
 326 DuckDrag_Combo::DuckDrag_Combo():
 327         scale(false),
 328         rotate(false),
 329         constrain(false) // Lock aspect for scale; smooth move for translate
 330 {
 331 }
 332
 333 void
 334 DuckDrag_Combo::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 335 {
 336         last_move=Vector(1,1);
 337
 338         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 339         DuckList::const_iterator iter;
 340
 341         bad_drag=false;
 342
 343                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 344
 345                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 346                 //snap=offset-drag_offset_;
 347                 snap=Vector(0,0);
 348
 349         // Calculate center
 350         Point vmin(100000000,100000000);
 351         Point vmax(-100000000,-100000000);
 352         //std::set<etl::handle<Duck> >::iterator iter;
 353         positions.clear();
 354         int i;
 355         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 356         {
 357                 Point p((*iter)->get_trans_point());
 358                 vmin[0]=min(vmin[0],p[0]);
 359                 vmin[1]=min(vmin[1],p[1]);
 360                 vmax[0]=max(vmax[0],p[0]);
 361                 vmax[1]=max(vmax[1],p[1]);
 362                 positions.push_back(p);
 363         }
 364         center=(vmin+vmax)*0.5;
 365         if((vmin-vmax).mag()<=EPSILON)
 366                 move_only=true;
 367         else
 368                 move_only=false;
 369
 370
 371         synfig::Vector vect(offset-center);
 372         original_angle=Angle::tan(vect[1],vect[0]);
 373         original_mag=vect.mag();
 374 }
 375
 376
 377 void
 378 DuckDrag_Combo::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 379 {
 380         if (!duckmatic) return;
 381
 382         if(bad_drag)
 383                 return;
 384
 385         //Override axis lock set in workarea when holding down the shift key
 386         if (!move_only && (scale || rotate))
 387                 duckmatic->set_axis_lock(false);
 388
 389         synfig::Vector vect;
 390         if (move_only || (!scale && !rotate))
 391                 vect= duckmatic->snap_point_to_grid(vector)-drag_offset+snap;
 392         else
 393                 vect= duckmatic->snap_point_to_grid(vector)-center+snap;
 394
 395         last_move=vect;
 396
 397         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 398         DuckList::const_iterator iter;
 399
 400         Time time(duckmatic->get_time());
 401
 402         int i;
 403         if( move_only || (!scale && !rotate) )
 404         {
 405                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 406                 {
 407                         if((*iter)->get_type()==Duck::TYPE_VERTEX || (*iter)->get_type()==Duck::TYPE_POSITION)
 408                                 (*iter)->set_trans_point(positions[i]+vect, time);
 409                 }
 410                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 411                 {
 412                         if((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION)
 413                                 (*iter)->set_trans_point(positions[i]+vect, time);
 414                 }
 415         }
 416
 417         if (rotate)
 418         {
 419                 Angle::deg angle(Angle::tan(vect[1],vect[0]));
 420                 angle=original_angle-angle;
 421                 if (constrain)
 422                 {
 423                         float degrees = angle.get()/15;
 424                         angle= Angle::deg (degrees>0?std::floor(degrees)*15:std::ceil(degrees)*15);
 425                 }
 426                 Real mag(vect.mag()/original_mag);
 427                 Real sine(Angle::sin(angle).get());
 428                 Real cosine(Angle::cos(angle).get());
 429
 430                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 431                 {
 432                         if((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION)continue;
 433
 434                         Vector x(positions[i]-center),p;
 435
 436                         p[0]=cosine*x[0]+sine*x[1];
 437                         p[1]=-sine*x[0]+cosine*x[1];
 438                         if(scale)p*=mag;
 439                         p+=center;
 440                         (*iter)->set_trans_point(p, time);
 441                 }
 442                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 443                 {
 444                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 445
 446                         Vector x(positions[i]-center),p;
 447
 448                         p[0]=cosine*x[0]+sine*x[1];
 449                         p[1]=-sine*x[0]+cosine*x[1];
 450                         if(scale)p*=mag;
 451                         p+=center;
 452                         (*iter)->set_trans_point(p, time);
 453                 }
 454         } else if (scale)
 455         {
 456                 if(!constrain)
 457                 {
 458                         if(abs(drag_offset[0]-center[0])>EPSILON)
 459                                 vect[0]/=drag_offset[0]-center[0];
 460                         else
 461                                 vect[0]=1;
 462                         if(abs(drag_offset[1]-center[1])>EPSILON)
 463                                 vect[1]/=drag_offset[1]-center[1];
 464                         else
 465                                 vect[1]=1;
 466                         }
 467                 else
 468                 {
 469                         //vect[0]=vect[1]=vect.mag()*0.707106781;
 470                         Real amount(vect.mag()/(drag_offset-center).mag());
 471                         vect[0]=vect[1]=amount;
 472                 }
 473
 474                 if(vect[0]<EPSILON && vect[0]>-EPSILON)
 475                         vect[0]=1;
 476                 if(vect[1]<EPSILON && vect[1]>-EPSILON)
 477                         vect[1]=1;
 478
 479                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 480                 {
 481                         if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 482
 483                         Vector p(positions[i]-center);
 484
 485                         p[0]*=vect[0];
 486                         p[1]*=vect[1];
 487                         p+=center;
 488                         (*iter)->set_trans_point(p, time);
 489                 }
 490                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 491                 {
 492                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 493
 494                         Vector p(positions[i]-center);
 495
 496                         p[0]*=vect[0];
 497                         p[1]*=vect[1];
 498                         p+=center;
 499                         (*iter)->set_trans_point(p, time);
 500                 }
 501         }
 502
 503         // then patch up the tangents for the vertices we've moved
 504         DuckList duck_list(duckmatic->get_duck_list());
 505         for (iter=selected_ducks.begin(); iter!=selected_ducks.end(); ++iter)
 506         {
 507                 etl::handle<Duck> duck(*iter);
 508                 if (duck->get_type() == Duck::TYPE_VERTEX || duck->get_type() == Duck::TYPE_POSITION)
 509                 {
 510                         ValueNode_Composite::Handle composite;
 511
 512                         if ((ValueNode_BLineCalcVertex::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) ||
 513                                 ((composite = ValueNode_Composite::Handle::cast_dynamic(duck->get_value_desc().get_value_node())) &&
 514                                  composite->get_type() == ValueBase::TYPE_BLINEPOINT &&
 515                                  (ValueNode_BLineCalcVertex::Handle::cast_dynamic(composite->get_link("point")))))
 516                         {
 517                                 //! \todo update() will call dynamic cast again, see if we can avoid that
 518                                 DuckList::iterator iter;
 519                                 for (iter=duck_list.begin(); iter!=duck_list.end(); iter++)
 520                                         if ((*iter)->get_origin_duck()==duck
 521                                                 && std::find(selected_ducks.begin(),
 522                                                                          selected_ducks.end(), *iter) == selected_ducks.end())
 523                                                 (*iter)->update(time);
 524                         }
 525                 }
 526         }
 527
 528         last_move=vect;
 529 }
 530
 531 bool
 532 DuckDrag_Combo::end_duck_drag(Duckmatic* duckmatic)
 533 {
 534         if(bad_drag)return false;
 535
 536         //synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Rotate Ducks"));
 537
 538         if((last_move-Vector(1,1)).mag()>0.0001)
 539         {
 540                 duckmatic->signal_edited_selected_ducks();
 541                 return true;
 542         }
 543         else
 544         {
 545                 duckmatic->signal_user_click_selected_ducks(0);
 546                 return false;
 547         }
 548 }