synfig-studio/trunk/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 "canvasview.h"
  41 #include "workarea.h"
  42 #include "app.h"
  43
  44 #include <synfigapp/action.h>
  45 #include "event_mouse.h"
  46 #include "event_layerclick.h"
  47 #include "toolbox.h"
  48 #include "dialog_tooloptions.h"
  49 #include <gtkmm/optionmenu.h>
  50 #include "duck.h"
  51 #include <synfigapp/main.h>
  52
  53 #include "general.h"
  54
  55 #endif
  56
  57 /* === U S I N G =========================================================== */
  58
  59 using namespace std;
  60 using namespace etl;
  61 using namespace synfig;
  62 using namespace studio;
  63
  64 /* === M A C R O S ========================================================= */
  65
  66 /* === G L O B A L S ======================================================= */
  67
  68 StateScale studio::state_scale;
  69
  70 /* === C L A S S E S & S T R U C T S ======================================= */
  71
  72 class DuckDrag_Scale : public DuckDrag_Base
  73 {
  74
  75         synfig::Vector last_scale;
  76         synfig::Vector drag_offset;
  77         synfig::Vector center;
  78         synfig::Vector snap;
  79
  80         std::vector<synfig::Vector> positions;
  81
  82         bool move_only;
  83
  84         bool bad_drag;
  85 public:
  86         bool lock_aspect;
  87         DuckDrag_Scale();
  88         void begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& begin);
  89         bool end_duck_drag(Duckmatic* duckmatic);
  90         void duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector);
  91 };
  92
  93
  94 class studio::StateScale_Context : public sigc::trackable
  95 {
  96         etl::handle<CanvasView> canvas_view_;
  97
  98         synfigapp::Settings& settings;
  99
 100         etl::handle<DuckDrag_Scale> duck_dragger_;
 101
 102         Gtk::Table options_table;
 103
 104
 105         Gtk::CheckButton checkbutton_aspect_lock;
 106
 107 public:
 108
 109         bool get_aspect_lock_flag()const { return checkbutton_aspect_lock.get_active(); }
 110         void set_aspect_lock_flag(bool x) { return checkbutton_aspect_lock.set_active(x); refresh_aspect_lock_flag(); }
 111
 112         void refresh_aspect_lock_flag() { if(duck_dragger_)duck_dragger_->lock_aspect=get_aspect_lock_flag(); }
 113
 114         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 115
 116         void refresh_tool_options();
 117
 118         StateScale_Context(CanvasView* canvas_view);
 119
 120         ~StateScale_Context();
 121
 122         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 123         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 124         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 125         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 126
 127         void load_settings();
 128         void save_settings();
 129 };      // END of class StateScale_Context
 130
 131 /* === M E T H O D S ======================================================= */
 132
 133 StateScale::StateScale():
 134         Smach::state<StateScale_Context>("scale")
 135 {
 136         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateScale_Context::event_refresh_tool_options));
 137 }
 138
 139 StateScale::~StateScale()
 140 {
 141 }
 142
 143 void
 144 StateScale_Context::load_settings()
 145 {
 146         String value;
 147
 148         if(settings.get_value("scale.lock_aspect",value) && value=="0")
 149                 set_aspect_lock_flag(false);
 150         else
 151                 set_aspect_lock_flag(true);
 152 }
 153
 154 void
 155 StateScale_Context::save_settings()
 156 {
 157         settings.set_value("scale.lock_aspect",get_aspect_lock_flag()?"1":"0");
 158 }
 159
 160 StateScale_Context::StateScale_Context(CanvasView* canvas_view):
 161         canvas_view_(canvas_view),
 162         settings(synfigapp::Main::get_selected_input_device()->settings()),
 163         duck_dragger_(new DuckDrag_Scale()),
 164         checkbutton_aspect_lock(_("Lock Aspect Ratio"))
 165 {
 166         // Set up the tool options dialog
 167         options_table.attach(*manage(new Gtk::Label(_("Scale Tool"))),  0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 168         options_table.attach(checkbutton_aspect_lock,                                   0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 169
 170         checkbutton_aspect_lock.signal_toggled().connect(sigc::mem_fun(*this,&StateScale_Context::refresh_aspect_lock_flag));
 171
 172         options_table.show_all();
 173         refresh_tool_options();
 174         App::dialog_tool_options->present();
 175
 176         get_work_area()->set_allow_layer_clicks(true);
 177         get_work_area()->set_duck_dragger(duck_dragger_);
 178
 179 //      get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 180         get_canvas_view()->work_area->reset_cursor();
 181
 182         App::toolbox->refresh();
 183
 184         set_aspect_lock_flag(true);
 185         load_settings();
 186 }
 187
 188 void
 189 StateScale_Context::refresh_tool_options()
 190 {
 191         App::dialog_tool_options->clear();
 192         App::dialog_tool_options->set_widget(options_table);
 193         App::dialog_tool_options->set_local_name(_("Scale Tool"));
 194         App::dialog_tool_options->set_name("scale");
 195 }
 196
 197 Smach::event_result
 198 StateScale_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 199 {
 200         refresh_tool_options();
 201         return Smach::RESULT_ACCEPT;
 202 }
 203
 204 StateScale_Context::~StateScale_Context()
 205 {
 206         save_settings();
 207
 208         get_work_area()->clear_duck_dragger();
 209         get_canvas_view()->work_area->reset_cursor();
 210
 211         App::dialog_tool_options->clear();
 212
 213         App::toolbox->refresh();
 214 }
 215
 216
 217
 218
 219 DuckDrag_Scale::DuckDrag_Scale():
 220         lock_aspect(true)
 221 {
 222 }
 223
 224 #ifndef EPSILON
 225 #define EPSILON 0.0000001
 226 #endif
 227
 228 void
 229 DuckDrag_Scale::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 230 {
 231         last_scale=Vector(1,1);
 232         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 233         DuckList::const_iterator iter;
 234
 235         //if(duckmatic->get_selected_ducks().size()<2)
 236         //{
 237         //      bad_drag=true;
 238 //              return;
 239 //      }
 240         bad_drag=false;
 241
 242                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 243
 244                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 245                 //snap=offset-drag_offset;
 246                 snap=Vector(0,0);
 247
 248         // Calculate center
 249         Point vmin(100000000,100000000);
 250         Point vmax(-100000000,-100000000);
 251         //std::set<etl::handle<Duck> >::iterator iter;
 252         positions.clear();
 253         int i;
 254         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 255         {
 256                 Point p((*iter)->get_trans_point());
 257                 vmin[0]=min(vmin[0],p[0]);
 258                 vmin[1]=min(vmin[1],p[1]);
 259                 vmax[0]=max(vmax[0],p[0]);
 260                 vmax[1]=max(vmax[1],p[1]);
 261                 positions.push_back(p);
 262         }
 263         if((vmin-vmax).mag()<=EPSILON)
 264                 move_only=true;
 265         else
 266                 move_only=false;
 267
 268         center=(vmin+vmax)*0.5;
 269 }
 270
 271
 272 void
 273 DuckDrag_Scale::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 274 {
 275         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 276         DuckList::const_iterator iter;
 277
 278         if(bad_drag)
 279                 return;
 280
 281         //std::set<etl::handle<Duck> >::iterator iter;
 282         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-center);
 283         last_scale=vect;
 284
 285         if(move_only)
 286         {
 287                 int i;
 288                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 289                 {
 290                         if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 291
 292                         Vector p(positions[i]);
 293
 294                         p[0]+=vect[0];
 295                         p[1]+=vect[1];
 296                         (*iter)->set_trans_point(p);
 297                 }
 298                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 299                 {
 300                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 301
 302                         Vector p(positions[i]);
 303
 304                         p[0]+=vect[0];
 305                         p[1]+=vect[1];
 306                         (*iter)->set_trans_point(p);
 307                 }
 308                 return;
 309         }
 310
 311         if(!lock_aspect)
 312         {
 313                 if(abs(drag_offset[0]-center[0])>EPSILON)
 314                         vect[0]/=drag_offset[0]-center[0];
 315                 else
 316                         vect[0]=1;
 317                 if(abs(drag_offset[1]-center[1])>EPSILON)
 318                         vect[1]/=drag_offset[1]-center[1];
 319                 else
 320                         vect[1]=1;
 321                 }
 322         else
 323         {
 324                 //vect[0]=vect[1]=vect.mag()*0.707106781;
 325                 Real amount(vect.mag()/(drag_offset-center).mag());
 326                 vect[0]=vect[1]=amount;
 327         }
 328
 329         if(vect[0]<EPSILON && vect[0]>-EPSILON)
 330                 vect[0]=1;
 331         if(vect[1]<EPSILON && vect[1]>-EPSILON)
 332                 vect[1]=1;
 333
 334         int i;
 335         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 336         {
 337                 if(((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 338
 339                 Vector p(positions[i]-center);
 340
 341                 p[0]*=vect[0];
 342                 p[1]*=vect[1];
 343                 p+=center;
 344                 (*iter)->set_trans_point(p);
 345         }
 346         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 347         {
 348                 if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 349
 350                 Vector p(positions[i]-center);
 351
 352                 p[0]*=vect[0];
 353                 p[1]*=vect[1];
 354                 p+=center;
 355                 (*iter)->set_trans_point(p);
 356         }
 357
 358         last_scale=vect;
 359         //snap=Vector(0,0);
 360 }
 361
 362 bool
 363 DuckDrag_Scale::end_duck_drag(Duckmatic* duckmatic)
 364 {
 365         if(bad_drag)return false;
 366
 367         if((last_scale-Vector(1,1)).mag()>0.0001)
 368         {
 369                 duckmatic->signal_edited_selected_ducks();
 370                 return true;
 371         }
 372         else
 373         {
 374                 duckmatic->signal_user_click_selected_ducks(0);
 375                 return false;
 376         }
 377 }