synfig-studio/trunk/src/gtkmm/state_rotate.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_rotate.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_rotate.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 <synfig/angle.h>
  51 #include <synfigapp/main.h>
  52
  53 #endif
  54
  55 /* === U S I N G =========================================================== */
  56
  57 using namespace std;
  58 using namespace etl;
  59 using namespace synfig;
  60 using namespace studio;
  61
  62 /* === M A C R O S ========================================================= */
  63
  64 #ifndef EPSILON
  65 #define EPSILON 0.0000001
  66 #endif
  67
  68 /* === G L O B A L S ======================================================= */
  69
  70 StateRotate studio::state_rotate;
  71
  72 /* === C L A S S E S & S T R U C T S ======================================= */
  73
  74 class DuckDrag_Rotate : public DuckDrag_Base
  75 {
  76
  77         synfig::Vector last_rotate;
  78         synfig::Vector drag_offset;
  79         synfig::Vector center;
  80         synfig::Vector snap;
  81
  82         Angle original_angle;
  83         Real original_mag;
  84
  85         std::vector<synfig::Vector> positions;
  86
  87
  88         bool bad_drag;
  89         bool move_only;
  90
  91 public:
  92         etl::handle<CanvasView> canvas_view_;
  93         bool use_magnitude;
  94         DuckDrag_Rotate();
  95         void begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& begin);
  96         bool end_duck_drag(Duckmatic* duckmatic);
  97         void duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector);
  98
  99         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 100 };
 101
 102
 103 class studio::StateRotate_Context : public sigc::trackable
 104 {
 105         etl::handle<CanvasView> canvas_view_;
 106
 107         synfigapp::Settings& settings;
 108
 109         etl::handle<DuckDrag_Rotate> duck_dragger_;
 110
 111         Gtk::Table options_table;
 112
 113         Gtk::CheckButton checkbutton_scale;
 114
 115 public:
 116
 117         bool get_scale_flag()const { return checkbutton_scale.get_active(); }
 118         void set_scale_flag(bool x) { return checkbutton_scale.set_active(x); refresh_scale_flag(); }
 119
 120
 121         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 122
 123         void refresh_tool_options();
 124
 125         void refresh_scale_flag() { if(duck_dragger_)duck_dragger_->use_magnitude=get_scale_flag(); }
 126
 127         StateRotate_Context(CanvasView* canvas_view);
 128
 129         ~StateRotate_Context();
 130
 131         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 132         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 133         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 134         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 135
 136         void load_settings();
 137         void save_settings();
 138 };      // END of class StateRotate_Context
 139
 140 /* === M E T H O D S ======================================================= */
 141
 142 StateRotate::StateRotate():
 143         Smach::state<StateRotate_Context>("rotate")
 144 {
 145         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateRotate_Context::event_refresh_tool_options));
 146 }
 147
 148 StateRotate::~StateRotate()
 149 {
 150 }
 151
 152 void
 153 StateRotate_Context::load_settings()
 154 {
 155         String value;
 156
 157         if(settings.get_value("rotate.scale",value) && value=="0")
 158                 set_scale_flag(false);
 159         else
 160                 set_scale_flag(true);
 161 }
 162
 163 void
 164 StateRotate_Context::save_settings()
 165 {
 166         settings.set_value("rotate.scale",get_scale_flag()?"1":"0");
 167 }
 168
 169 StateRotate_Context::StateRotate_Context(CanvasView* canvas_view):
 170         canvas_view_(canvas_view),
 171         settings(synfigapp::Main::get_selected_input_device()->settings()),
 172         duck_dragger_(new DuckDrag_Rotate()),
 173         checkbutton_scale(_("Allow Scale"))
 174 {
 175         duck_dragger_->canvas_view_=get_canvas_view();
 176
 177         // Set up the tool options dialog
 178         //options_table.attach(*manage(new Gtk::Label(_("Rotate Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 179         options_table.attach(checkbutton_scale, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 180
 181         checkbutton_scale.signal_toggled().connect(sigc::mem_fun(*this,&StateRotate_Context::refresh_scale_flag));
 182
 183         options_table.show_all();
 184         refresh_tool_options();
 185         //App::dialog_tool_options->set_widget(options_table);
 186         App::dialog_tool_options->present();
 187
 188         get_work_area()->set_allow_layer_clicks(true);
 189         get_work_area()->set_duck_dragger(duck_dragger_);
 190
 191 //      get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 192         get_canvas_view()->work_area->reset_cursor();
 193
 194         App::toolbox->refresh();
 195
 196         load_settings();
 197         refresh_scale_flag();
 198 }
 199
 200 void
 201 StateRotate_Context::refresh_tool_options()
 202 {
 203         App::dialog_tool_options->clear();
 204         App::dialog_tool_options->set_widget(options_table);
 205         App::dialog_tool_options->set_local_name(_("Rotate Tool"));
 206         App::dialog_tool_options->set_name("rotate");
 207 }
 208
 209 Smach::event_result
 210 StateRotate_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 211 {
 212         refresh_tool_options();
 213         return Smach::RESULT_ACCEPT;
 214 }
 215
 216 StateRotate_Context::~StateRotate_Context()
 217 {
 218         save_settings();
 219
 220         get_work_area()->clear_duck_dragger();
 221         get_canvas_view()->work_area->reset_cursor();
 222
 223         App::dialog_tool_options->clear();
 224
 225         App::toolbox->refresh();
 226 }
 227
 228
 229
 230
 231 DuckDrag_Rotate::DuckDrag_Rotate()
 232 {
 233         use_magnitude=true;
 234 }
 235
 236 void
 237 DuckDrag_Rotate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 238 {
 239         last_rotate=Vector(1,1);
 240
 241         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 242         DuckList::const_iterator iter;
 243
 244 /*
 245         if(duckmatic->get_selected_ducks().size()<2)
 246         {
 247                 bad_drag=true;
 248                 return;
 249         }
 250 */
 251         bad_drag=false;
 252
 253                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 254
 255                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 256                 //snap=offset-drag_offset;
 257                 snap=Vector(0,0);
 258
 259         // Calculate center
 260         Point vmin(100000000,100000000);
 261         Point vmax(-100000000,-100000000);
 262         //std::set<etl::handle<Duck> >::iterator iter;
 263         positions.clear();
 264         int i;
 265         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 266         {
 267                 Point p((*iter)->get_trans_point());
 268                 vmin[0]=min(vmin[0],p[0]);
 269                 vmin[1]=min(vmin[1],p[1]);
 270                 vmax[0]=max(vmax[0],p[0]);
 271                 vmax[1]=max(vmax[1],p[1]);
 272                 positions.push_back(p);
 273         }
 274         center=(vmin+vmax)*0.5;
 275         if((vmin-vmax).mag()<=EPSILON)
 276                 move_only=true;
 277         else
 278                 move_only=false;
 279
 280
 281         synfig::Vector vect(offset-center);
 282         original_angle=Angle::tan(vect[1],vect[0]);
 283         original_mag=vect.mag();
 284 }
 285
 286
 287 void
 288 DuckDrag_Rotate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 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+snap);
 295
 296         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 297         DuckList::const_iterator iter;
 298
 299         if(move_only)
 300         {
 301                 int i;
 302                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 303                 {
 304                         if((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION)continue;
 305
 306                         Vector p(positions[i]);
 307
 308                         p[0]+=vect[0];
 309                         p[1]+=vect[1];
 310                         (*iter)->set_trans_point(p);
 311                 }
 312                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 313                 {
 314                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 315
 316                         Vector p(positions[i]);
 317
 318                         p[0]+=vect[0];
 319                         p[1]+=vect[1];
 320                         (*iter)->set_trans_point(p);
 321                 }
 322                 return;
 323         }
 324
 325         Angle::tan angle(vect[1],vect[0]);
 326         angle=original_angle-angle;
 327         Real mag(vect.mag()/original_mag);
 328         Real sine(Angle::sin(angle).get());
 329         Real cosine(Angle::cos(angle).get());
 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 x(positions[i]-center),p;
 337
 338                 p[0]=cosine*x[0]+sine*x[1];
 339                 p[1]=-sine*x[0]+cosine*x[1];
 340                 if(use_magnitude)p*=mag;
 341                 p+=center;
 342                 (*iter)->set_trans_point(p);
 343         }
 344         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 345         {
 346                 if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 347
 348                 Vector x(positions[i]-center),p;
 349
 350                 p[0]=cosine*x[0]+sine*x[1];
 351                 p[1]=-sine*x[0]+cosine*x[1];
 352                 if(use_magnitude)p*=mag;
 353                 p+=center;
 354                 (*iter)->set_trans_point(p);
 355         }
 356
 357         last_rotate=vect;
 358         //snap=Vector(0,0);
 359 }
 360
 361 bool
 362 DuckDrag_Rotate::end_duck_drag(Duckmatic* duckmatic)
 363 {
 364         if(bad_drag)return false;
 365         if(move_only)
 366         {
 367                 synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Move Duck"));
 368                 duckmatic->signal_edited_selected_ducks();
 369                 return true;
 370         }
 371
 372         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Rotate Ducks"));
 373
 374         if((last_rotate-Vector(1,1)).mag()>0.0001)
 375         {
 376                 duckmatic->signal_edited_selected_ducks();
 377                 return true;
 378         }
 379         else
 380         {
 381                 duckmatic->signal_user_click_selected_ducks(0);
 382                 return false;
 383         }
 384 }