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                 SETTINGS_LOCALE_SAFE_AND_BACKUP
 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                 SETTINGS_LOCALE_RESTORE
 160         }
 161         catch(...)
 162         {
 163                 synfig::warning("State Scale: Caught exception when attempting to load settings.");
 164         }
 165 }
 166
 167 void
 168 StateScale_Context::save_settings()
 169 {
 170         try
 171         {
 172                 SETTINGS_LOCALE_SAFE_AND_BACKUP
 173                 settings.set_value("scale.lock_aspect",get_aspect_lock_flag()?"1":"0");
 174                 SETTINGS_LOCALE_RESTORE
 175         }
 176         catch(...)
 177         {
 178                 synfig::warning("State Scale: Caught exception when attempting to save settings.");
 179         }
 180 }
 181
 182 StateScale_Context::StateScale_Context(CanvasView* canvas_view):
 183         canvas_view_(canvas_view),
 184         is_working(*canvas_view),
 185         settings(synfigapp::Main::get_selected_input_device()->settings()),
 186         duck_dragger_(new DuckDrag_Scale()),
 187         checkbutton_aspect_lock(_("Lock Aspect Ratio"))
 188 {
 189         // Set up the tool options dialog
 190         options_table.attach(*manage(new Gtk::Label(_("Scale Tool"))),  0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 191         options_table.attach(checkbutton_aspect_lock,                                   0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 192
 193         checkbutton_aspect_lock.signal_toggled().connect(sigc::mem_fun(*this,&StateScale_Context::refresh_aspect_lock_flag));
 194
 195         options_table.show_all();
 196         refresh_tool_options();
 197         App::dialog_tool_options->present();
 198
 199         get_work_area()->set_allow_layer_clicks(true);
 200         get_work_area()->set_duck_dragger(duck_dragger_);
 201
 202         get_work_area()->set_cursor(Gdk::SIZING);
 203 //      get_work_area()->reset_cursor();
 204
 205         App::toolbox->refresh();
 206
 207         set_aspect_lock_flag(true);
 208         load_settings();
 209 }
 210
 211 void
 212 StateScale_Context::refresh_tool_options()
 213 {
 214         App::dialog_tool_options->clear();
 215         App::dialog_tool_options->set_widget(options_table);
 216         App::dialog_tool_options->set_local_name(_("Scale Tool"));
 217         App::dialog_tool_options->set_name("scale");
 218 }
 219
 220 Smach::event_result
 221 StateScale_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 222 {
 223         refresh_tool_options();
 224         return Smach::RESULT_ACCEPT;
 225 }
 226
 227 Smach::event_result
 228 StateScale_Context::event_stop_handler(const Smach::event& /*x*/)
 229 {
 230         throw &state_normal;
 231         return Smach::RESULT_OK;
 232 }
 233
 234 StateScale_Context::~StateScale_Context()
 235 {
 236         save_settings();
 237
 238         get_work_area()->clear_duck_dragger();
 239         get_work_area()->reset_cursor();
 240
 241         App::dialog_tool_options->clear();
 242
 243         App::toolbox->refresh();
 244 }
 245
 246
 247
 248
 249 DuckDrag_Scale::DuckDrag_Scale():
 250         lock_aspect(true)
 251 {
 252 }
 253
 254 #ifndef EPSILON
 255 #define EPSILON 0.0000001
 256 #endif
 257
 258 void
 259 DuckDrag_Scale::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 260 {
 261         last_scale=Vector(1,1);
 262         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 263         DuckList::const_iterator iter;
 264
 265         //if(duckmatic->get_selected_ducks().size()<2)
 266         //{
 267         //      bad_drag=true;
 268 //              return;
 269 //      }
 270         bad_drag=false;
 271
 272                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 273
 274                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 275                 //snap=offset-drag_offset;
 276                 snap=Vector(0,0);
 277
 278         // Calculate center
 279         Point vmin(100000000,100000000);
 280         Point vmax(-100000000,-100000000);
 281         //std::set<etl::handle<Duck> >::iterator iter;
 282         positions.clear();
 283         int i;
 284         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 285         {
 286                 Point p((*iter)->get_trans_point());
 287                 vmin[0]=min(vmin[0],p[0]);
 288                 vmin[1]=min(vmin[1],p[1]);
 289                 vmax[0]=max(vmax[0],p[0]);
 290                 vmax[1]=max(vmax[1],p[1]);
 291                 positions.push_back(p);
 292         }
 293         if((vmin-vmax).mag()<=EPSILON)
 294                 move_only=true;
 295         else
 296                 move_only=false;
 297
 298         center=(vmin+vmax)*0.5;
 299 }
 300
 301
 302 void
 303 DuckDrag_Scale::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 304 {
 305         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 306         DuckList::const_iterator iter;
 307
 308         if(bad_drag)
 309                 return;
 310
 311         //std::set<etl::handle<Duck> >::iterator iter;
 312         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-center);
 313         last_scale=vect;
 314
 315         if(move_only)
 316         {
 317                 int i;
 318                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 319                 {
 320                         if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 321
 322                         Vector p(positions[i]);
 323
 324                         p[0]+=vect[0];
 325                         p[1]+=vect[1];
 326                         (*iter)->set_trans_point(p);
 327                 }
 328                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 329                 {
 330                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 331
 332                         Vector p(positions[i]);
 333
 334                         p[0]+=vect[0];
 335                         p[1]+=vect[1];
 336                         (*iter)->set_trans_point(p);
 337                 }
 338                 return;
 339         }
 340
 341         if(!lock_aspect)
 342         {
 343                 if(abs(drag_offset[0]-center[0])>EPSILON)
 344                         vect[0]/=drag_offset[0]-center[0];
 345                 else
 346                         vect[0]=1;
 347                 if(abs(drag_offset[1]-center[1])>EPSILON)
 348                         vect[1]/=drag_offset[1]-center[1];
 349                 else
 350                         vect[1]=1;
 351                 }
 352         else
 353         {
 354                 //vect[0]=vect[1]=vect.mag()*0.707106781;
 355                 Real amount(vect.mag()/(drag_offset-center).mag());
 356                 vect[0]=vect[1]=amount;
 357         }
 358
 359         if(vect[0]<EPSILON && vect[0]>-EPSILON)
 360                 vect[0]=1;
 361         if(vect[1]<EPSILON && vect[1]>-EPSILON)
 362                 vect[1]=1;
 363
 364         int i;
 365         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 366         {
 367                 if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 368
 369                 Vector p(positions[i]-center);
 370
 371                 p[0]*=vect[0];
 372                 p[1]*=vect[1];
 373                 p+=center;
 374                 (*iter)->set_trans_point(p);
 375         }
 376         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 377         {
 378                 if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 379
 380                 Vector p(positions[i]-center);
 381
 382                 p[0]*=vect[0];
 383                 p[1]*=vect[1];
 384                 p+=center;
 385                 (*iter)->set_trans_point(p);
 386         }
 387
 388         last_scale=vect;
 389         //snap=Vector(0,0);
 390 }
 391
 392 bool
 393 DuckDrag_Scale::end_duck_drag(Duckmatic* duckmatic)
 394 {
 395         if(bad_drag)return false;
 396
 397         if((last_scale-Vector(1,1)).mag()>0.0001)
 398         {
 399                 duckmatic->signal_edited_selected_ducks();
 400                 return true;
 401         }
 402         else
 403         {
 404                 duckmatic->signal_user_click_selected_ducks(0);
 405                 return false;
 406         }
 407 }