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