synfig-studio/src/gui/states/state_scale.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_scale.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **  Copyright (c) 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include <gtkmm/dialog.h>
  34 #include <gtkmm/entry.h>
  35
  36 #include <synfig/valuenode_dynamiclist.h>
  37 #include <synfigapp/action_system.h>
  38
  39 #include "state_scale.h"
  40 #include "state_normal.h"
  41 #include "canvasview.h"
  42 #include "workarea.h"
  43 #include "app.h"
  44
  45 #include <synfigapp/action.h>
  46 #include "event_mouse.h"
  47 #include "event_layerclick.h"
  48 #include "toolbox.h"
  49 #include "docks/dialog_tooloptions.h"
  50 #include <gtkmm/optionmenu.h>
  51 #include "duck.h"
  52 #include <synfigapp/main.h>
  53
  54 #include "general.h"
  55
  56 #endif
  57
  58 /* === U S I N G =========================================================== */
  59
  60 using namespace std;
  61 using namespace etl;
  62 using namespace synfig;
  63 using namespace studio;
  64
  65 /* === M A C R O S ========================================================= */
  66
  67 /* === G L O B A L S ======================================================= */
  68
  69 StateScale studio::state_scale;
  70
  71 /* === C L A S S E S & S T R U C T S ======================================= */
  72
  73 class DuckDrag_Scale : public DuckDrag_Base
  74 {
  75
  76         synfig::Vector last_scale;
  77         synfig::Vector drag_offset;
  78         synfig::Vector center;
  79         synfig::Vector snap;
  80
  81         std::vector<synfig::Vector> positions;
  82
  83         bool move_only;
  84
  85         bool bad_drag;
  86 public:
  87         bool lock_aspect;
  88         DuckDrag_Scale();
  89         void begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& begin);
  90         bool end_duck_drag(Duckmatic* duckmatic);
  91         void duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector);
  92 };
  93
  94
  95 class studio::StateScale_Context : public sigc::trackable
  96 {
  97         etl::handle<CanvasView> canvas_view_;
  98         CanvasView::IsWorking is_working;
  99
 100         synfigapp::Settings& settings;
 101
 102         etl::handle<DuckDrag_Scale> duck_dragger_;
 103
 104         Gtk::Table options_table;
 105
 106
 107         Gtk::CheckButton checkbutton_aspect_lock;
 108
 109 public:
 110
 111         bool get_aspect_lock_flag()const { return checkbutton_aspect_lock.get_active(); }
 112         void set_aspect_lock_flag(bool x) { return checkbutton_aspect_lock.set_active(x); refresh_aspect_lock_flag(); }
 113
 114         void refresh_aspect_lock_flag() { if(duck_dragger_)duck_dragger_->lock_aspect=get_aspect_lock_flag(); }
 115
 116         Smach::event_result event_stop_handler(const Smach::event& x);
 117         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 118
 119         void refresh_tool_options();
 120
 121         StateScale_Context(CanvasView* canvas_view);
 122
 123         ~StateScale_Context();
 124
 125         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 126         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 127         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 128         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 129
 130         void load_settings();
 131         void save_settings();
 132 };      // END of class StateScale_Context
 133
 134 /* === M E T H O D S ======================================================= */
 135
 136 StateScale::StateScale():
 137         Smach::state<StateScale_Context>("scale")
 138 {
 139         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateScale_Context::event_refresh_tool_options));
 140         insert(event_def(EVENT_STOP,&StateScale_Context::event_stop_handler));
 141 }
 142
 143 StateScale::~StateScale()
 144 {
 145 }
 146
 147 void
 148 StateScale_Context::load_settings()
 149 {
 150         try
 151         {
 152                 synfig::ChangeLocale change_locale(LC_NUMERIC, "C");
 153                 String value;
 154
 155                 if(settings.get_value("scale.lock_aspect",value) && value=="0")
 156                         set_aspect_lock_flag(false);
 157                 else
 158                         set_aspect_lock_flag(true);
 159         }
 160         catch(...)
 161         {
 162                 synfig::warning("State Scale: Caught exception when attempting to load settings.");
 163         }
 164 }
 165
 166 void
 167 StateScale_Context::save_settings()
 168 {
 169         try
 170         {
 171                 synfig::ChangeLocale change_locale(LC_NUMERIC, "C");
 172                 settings.set_value("scale.lock_aspect",get_aspect_lock_flag()?"1":"0");
 173         }
 174         catch(...)
 175         {
 176                 synfig::warning("State Scale: Caught exception when attempting to save settings.");
 177         }
 178 }
 179
 180 StateScale_Context::StateScale_Context(CanvasView* canvas_view):
 181         canvas_view_(canvas_view),
 182         is_working(*canvas_view),
 183         settings(synfigapp::Main::get_selected_input_device()->settings()),
 184         duck_dragger_(new DuckDrag_Scale()),
 185         checkbutton_aspect_lock(_("Lock Aspect Ratio"))
 186 {
 187         // Set up the tool options dialog
 188         options_table.attach(*manage(new Gtk::Label(_("Scale Tool"))),  0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 189         options_table.attach(checkbutton_aspect_lock,                                   0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 190
 191         checkbutton_aspect_lock.signal_toggled().connect(sigc::mem_fun(*this,&StateScale_Context::refresh_aspect_lock_flag));
 192
 193         options_table.show_all();
 194         refresh_tool_options();
 195         App::dialog_tool_options->present();
 196
 197         get_work_area()->set_allow_layer_clicks(true);
 198         get_work_area()->set_duck_dragger(duck_dragger_);
 199
 200         get_work_area()->set_cursor(Gdk::SIZING);
 201 //      get_work_area()->reset_cursor();
 202
 203         App::toolbox->refresh();
 204
 205         set_aspect_lock_flag(true);
 206         load_settings();
 207 }
 208
 209 void
 210 StateScale_Context::refresh_tool_options()
 211 {
 212         App::dialog_tool_options->clear();
 213         App::dialog_tool_options->set_widget(options_table);
 214         App::dialog_tool_options->set_local_name(_("Scale Tool"));
 215         App::dialog_tool_options->set_name("scale");
 216 }
 217
 218 Smach::event_result
 219 StateScale_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 220 {
 221         refresh_tool_options();
 222         return Smach::RESULT_ACCEPT;
 223 }
 224
 225 Smach::event_result
 226 StateScale_Context::event_stop_handler(const Smach::event& /*x*/)
 227 {
 228         throw &state_normal;
 229         return Smach::RESULT_OK;
 230 }
 231
 232 StateScale_Context::~StateScale_Context()
 233 {
 234         save_settings();
 235
 236         get_work_area()->clear_duck_dragger();
 237         get_work_area()->reset_cursor();
 238
 239         App::dialog_tool_options->clear();
 240
 241         App::toolbox->refresh();
 242 }
 243
 244
 245
 246
 247 DuckDrag_Scale::DuckDrag_Scale():
 248         lock_aspect(true)
 249 {
 250 }
 251
 252 #ifndef EPSILON
 253 #define EPSILON 0.0000001
 254 #endif
 255
 256 void
 257 DuckDrag_Scale::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 258 {
 259         last_scale=Vector(1,1);
 260         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 261         DuckList::const_iterator iter;
 262
 263         //if(duckmatic->get_selected_ducks().size()<2)
 264         //{
 265         //      bad_drag=true;
 266 //              return;
 267 //      }
 268         bad_drag=false;
 269
 270                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 271
 272                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 273                 //snap=offset-drag_offset;
 274                 snap=Vector(0,0);
 275
 276         // Calculate center
 277         Point vmin(100000000,100000000);
 278         Point vmax(-100000000,-100000000);
 279         //std::set<etl::handle<Duck> >::iterator iter;
 280         positions.clear();
 281         int i;
 282         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 283         {
 284                 Point p((*iter)->get_trans_point());
 285                 vmin[0]=min(vmin[0],p[0]);
 286                 vmin[1]=min(vmin[1],p[1]);
 287                 vmax[0]=max(vmax[0],p[0]);
 288                 vmax[1]=max(vmax[1],p[1]);
 289                 positions.push_back(p);
 290         }
 291         if((vmin-vmax).mag()<=EPSILON)
 292                 move_only=true;
 293         else
 294                 move_only=false;
 295
 296         center=(vmin+vmax)*0.5;
 297 }
 298
 299
 300 void
 301 DuckDrag_Scale::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 302 {
 303         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 304         DuckList::const_iterator iter;
 305
 306         if(bad_drag)
 307                 return;
 308
 309         //std::set<etl::handle<Duck> >::iterator iter;
 310         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-center);
 311         last_scale=vect;
 312
 313         if(move_only)
 314         {
 315                 int i;
 316                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 317                 {
 318                         if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 319
 320                         Vector p(positions[i]);
 321
 322                         p[0]+=vect[0];
 323                         p[1]+=vect[1];
 324                         (*iter)->set_trans_point(p);
 325                 }
 326                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 327                 {
 328                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 329
 330                         Vector p(positions[i]);
 331
 332                         p[0]+=vect[0];
 333                         p[1]+=vect[1];
 334                         (*iter)->set_trans_point(p);
 335                 }
 336                 return;
 337         }
 338
 339         if(!lock_aspect)
 340         {
 341                 if(abs(drag_offset[0]-center[0])>EPSILON)
 342                         vect[0]/=drag_offset[0]-center[0];
 343                 else
 344                         vect[0]=1;
 345                 if(abs(drag_offset[1]-center[1])>EPSILON)
 346                         vect[1]/=drag_offset[1]-center[1];
 347                 else
 348                         vect[1]=1;
 349                 }
 350         else
 351         {
 352                 //vect[0]=vect[1]=vect.mag()*0.707106781;
 353                 Real amount(vect.mag()/(drag_offset-center).mag());
 354                 vect[0]=vect[1]=amount;
 355         }
 356
 357         if(vect[0]<EPSILON && vect[0]>-EPSILON)
 358                 vect[0]=1;
 359         if(vect[1]<EPSILON && vect[1]>-EPSILON)
 360                 vect[1]=1;
 361
 362         int i;
 363         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 364         {
 365                 if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 366
 367                 Vector p(positions[i]-center);
 368
 369                 p[0]*=vect[0];
 370                 p[1]*=vect[1];
 371                 p+=center;
 372                 (*iter)->set_trans_point(p);
 373         }
 374         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 375         {
 376                 if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 377
 378                 Vector p(positions[i]-center);
 379
 380                 p[0]*=vect[0];
 381                 p[1]*=vect[1];
 382                 p+=center;
 383                 (*iter)->set_trans_point(p);
 384         }
 385
 386         last_scale=vect;
 387         //snap=Vector(0,0);
 388 }
 389
 390 bool
 391 DuckDrag_Scale::end_duck_drag(Duckmatic* duckmatic)
 392 {
 393         if(bad_drag)return false;
 394
 395         if((last_scale-Vector(1,1)).mag()>0.0001)
 396         {
 397                 duckmatic->signal_edited_selected_ducks();
 398                 return true;
 399         }
 400         else
 401         {
 402                 duckmatic->signal_user_click_selected_ducks(0);
 403                 return false;
 404         }
 405 }