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