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