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