synfig-studio/src/gtkmm/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 "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         String value;
 151
 152         if(settings.get_value("scale.lock_aspect",value) && value=="0")
 153                 set_aspect_lock_flag(false);
 154         else
 155                 set_aspect_lock_flag(true);
 156 }
 157
 158 void
 159 StateScale_Context::save_settings()
 160 {
 161         settings.set_value("scale.lock_aspect",get_aspect_lock_flag()?"1":"0");
 162 }
 163
 164 StateScale_Context::StateScale_Context(CanvasView* canvas_view):
 165         canvas_view_(canvas_view),
 166         is_working(*canvas_view),
 167         settings(synfigapp::Main::get_selected_input_device()->settings()),
 168         duck_dragger_(new DuckDrag_Scale()),
 169         checkbutton_aspect_lock(_("Lock Aspect Ratio"))
 170 {
 171         // Set up the tool options dialog
 172         options_table.attach(*manage(new Gtk::Label(_("Scale Tool"))),  0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 173         options_table.attach(checkbutton_aspect_lock,                                   0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 174
 175         checkbutton_aspect_lock.signal_toggled().connect(sigc::mem_fun(*this,&StateScale_Context::refresh_aspect_lock_flag));
 176
 177         options_table.show_all();
 178         refresh_tool_options();
 179         App::dialog_tool_options->present();
 180
 181         get_work_area()->set_allow_layer_clicks(true);
 182         get_work_area()->set_duck_dragger(duck_dragger_);
 183
 184         get_work_area()->set_cursor(Gdk::SIZING);
 185 //      get_work_area()->reset_cursor();
 186
 187         App::toolbox->refresh();
 188
 189         set_aspect_lock_flag(true);
 190         load_settings();
 191 }
 192
 193 void
 194 StateScale_Context::refresh_tool_options()
 195 {
 196         App::dialog_tool_options->clear();
 197         App::dialog_tool_options->set_widget(options_table);
 198         App::dialog_tool_options->set_local_name(_("Scale Tool"));
 199         App::dialog_tool_options->set_name("scale");
 200 }
 201
 202 Smach::event_result
 203 StateScale_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 204 {
 205         refresh_tool_options();
 206         return Smach::RESULT_ACCEPT;
 207 }
 208
 209 Smach::event_result
 210 StateScale_Context::event_stop_handler(const Smach::event& /*x*/)
 211 {
 212         throw &state_normal;
 213         return Smach::RESULT_OK;
 214 }
 215
 216 StateScale_Context::~StateScale_Context()
 217 {
 218         save_settings();
 219
 220         get_work_area()->clear_duck_dragger();
 221         get_work_area()->reset_cursor();
 222
 223         App::dialog_tool_options->clear();
 224
 225         App::toolbox->refresh();
 226 }
 227
 228
 229
 230
 231 DuckDrag_Scale::DuckDrag_Scale():
 232         lock_aspect(true)
 233 {
 234 }
 235
 236 #ifndef EPSILON
 237 #define EPSILON 0.0000001
 238 #endif
 239
 240 void
 241 DuckDrag_Scale::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 242 {
 243         last_scale=Vector(1,1);
 244         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 245         DuckList::const_iterator iter;
 246
 247         //if(duckmatic->get_selected_ducks().size()<2)
 248         //{
 249         //      bad_drag=true;
 250 //              return;
 251 //      }
 252         bad_drag=false;
 253
 254                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 255
 256                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 257                 //snap=offset-drag_offset;
 258                 snap=Vector(0,0);
 259
 260         // Calculate center
 261         Point vmin(100000000,100000000);
 262         Point vmax(-100000000,-100000000);
 263         //std::set<etl::handle<Duck> >::iterator iter;
 264         positions.clear();
 265         int i;
 266         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 267         {
 268                 Point p((*iter)->get_trans_point());
 269                 vmin[0]=min(vmin[0],p[0]);
 270                 vmin[1]=min(vmin[1],p[1]);
 271                 vmax[0]=max(vmax[0],p[0]);
 272                 vmax[1]=max(vmax[1],p[1]);
 273                 positions.push_back(p);
 274         }
 275         if((vmin-vmax).mag()<=EPSILON)
 276                 move_only=true;
 277         else
 278                 move_only=false;
 279
 280         center=(vmin+vmax)*0.5;
 281 }
 282
 283
 284 void
 285 DuckDrag_Scale::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 286 {
 287         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 288         DuckList::const_iterator iter;
 289
 290         if(bad_drag)
 291                 return;
 292
 293         //std::set<etl::handle<Duck> >::iterator iter;
 294         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-center);
 295         last_scale=vect;
 296
 297         if(move_only)
 298         {
 299                 int i;
 300                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 301                 {
 302                         if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 303
 304                         Vector p(positions[i]);
 305
 306                         p[0]+=vect[0];
 307                         p[1]+=vect[1];
 308                         (*iter)->set_trans_point(p);
 309                 }
 310                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 311                 {
 312                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 313
 314                         Vector p(positions[i]);
 315
 316                         p[0]+=vect[0];
 317                         p[1]+=vect[1];
 318                         (*iter)->set_trans_point(p);
 319                 }
 320                 return;
 321         }
 322
 323         if(!lock_aspect)
 324         {
 325                 if(abs(drag_offset[0]-center[0])>EPSILON)
 326                         vect[0]/=drag_offset[0]-center[0];
 327                 else
 328                         vect[0]=1;
 329                 if(abs(drag_offset[1]-center[1])>EPSILON)
 330                         vect[1]/=drag_offset[1]-center[1];
 331                 else
 332                         vect[1]=1;
 333                 }
 334         else
 335         {
 336                 //vect[0]=vect[1]=vect.mag()*0.707106781;
 337                 Real amount(vect.mag()/(drag_offset-center).mag());
 338                 vect[0]=vect[1]=amount;
 339         }
 340
 341         if(vect[0]<EPSILON && vect[0]>-EPSILON)
 342                 vect[0]=1;
 343         if(vect[1]<EPSILON && vect[1]>-EPSILON)
 344                 vect[1]=1;
 345
 346         int i;
 347         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 348         {
 349                 if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 350
 351                 Vector p(positions[i]-center);
 352
 353                 p[0]*=vect[0];
 354                 p[1]*=vect[1];
 355                 p+=center;
 356                 (*iter)->set_trans_point(p);
 357         }
 358         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 359         {
 360                 if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 361
 362                 Vector p(positions[i]-center);
 363
 364                 p[0]*=vect[0];
 365                 p[1]*=vect[1];
 366                 p+=center;
 367                 (*iter)->set_trans_point(p);
 368         }
 369
 370         last_scale=vect;
 371         //snap=Vector(0,0);
 372 }
 373
 374 bool
 375 DuckDrag_Scale::end_duck_drag(Duckmatic* duckmatic)
 376 {
 377         if(bad_drag)return false;
 378
 379         if((last_scale-Vector(1,1)).mag()>0.0001)
 380         {
 381                 duckmatic->signal_edited_selected_ducks();
 382                 return true;
 383         }
 384         else
 385         {
 386                 duckmatic->signal_user_click_selected_ducks(0);
 387                 return false;
 388         }
 389 }