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 #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 #ifndef EPSILON
  67 #define EPSILON 0.0000001
  68 #endif
  69
  70 /* === G L O B A L S ======================================================= */
  71
  72 StateRotate studio::state_rotate;
  73
  74 /* === C L A S S E S & S T R U C T S ======================================= */
  75
  76 class DuckDrag_Rotate : public DuckDrag_Base
  77 {
  78
  79         synfig::Vector last_rotate;
  80         synfig::Vector drag_offset;
  81         synfig::Vector center;
  82         synfig::Vector snap;
  83
  84         Angle original_angle;
  85         Real original_mag;
  86
  87         std::vector<synfig::Vector> positions;
  88
  89
  90         bool bad_drag;
  91         bool move_only;
  92
  93 public:
  94         etl::handle<CanvasView> canvas_view_;
  95         bool use_magnitude;
  96         DuckDrag_Rotate();
  97         void begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& begin);
  98         bool end_duck_drag(Duckmatic* duckmatic);
  99         void duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector);
 100
 101         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 102 };
 103
 104
 105 class studio::StateRotate_Context : public sigc::trackable
 106 {
 107         etl::handle<CanvasView> canvas_view_;
 108
 109         synfigapp::Settings& settings;
 110
 111         etl::handle<DuckDrag_Rotate> duck_dragger_;
 112
 113         Gtk::Table options_table;
 114
 115         Gtk::CheckButton checkbutton_scale;
 116
 117 public:
 118
 119         bool get_scale_flag()const { return checkbutton_scale.get_active(); }
 120         void set_scale_flag(bool x) { return checkbutton_scale.set_active(x); refresh_scale_flag(); }
 121
 122
 123         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 124
 125         void refresh_tool_options();
 126
 127         void refresh_scale_flag() { if(duck_dragger_)duck_dragger_->use_magnitude=get_scale_flag(); }
 128
 129         StateRotate_Context(CanvasView* canvas_view);
 130
 131         ~StateRotate_Context();
 132
 133         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 134         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 135         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 136         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 137
 138         void load_settings();
 139         void save_settings();
 140 };      // END of class StateRotate_Context
 141
 142 /* === M E T H O D S ======================================================= */
 143
 144 StateRotate::StateRotate():
 145         Smach::state<StateRotate_Context>("rotate")
 146 {
 147         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateRotate_Context::event_refresh_tool_options));
 148 }
 149
 150 StateRotate::~StateRotate()
 151 {
 152 }
 153
 154 void
 155 StateRotate_Context::load_settings()
 156 {
 157         String value;
 158
 159         if(settings.get_value("rotate.scale",value) && value=="0")
 160                 set_scale_flag(false);
 161         else
 162                 set_scale_flag(true);
 163 }
 164
 165 void
 166 StateRotate_Context::save_settings()
 167 {
 168         settings.set_value("rotate.scale",get_scale_flag()?"1":"0");
 169 }
 170
 171 StateRotate_Context::StateRotate_Context(CanvasView* canvas_view):
 172         canvas_view_(canvas_view),
 173         settings(synfigapp::Main::get_selected_input_device()->settings()),
 174         duck_dragger_(new DuckDrag_Rotate()),
 175         checkbutton_scale(_("Allow Scale"))
 176 {
 177         duck_dragger_->canvas_view_=get_canvas_view();
 178
 179         // Set up the tool options dialog
 180         options_table.attach(*manage(new Gtk::Label(_("Rotate Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 181         options_table.attach(checkbutton_scale,                                                 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 182
 183         checkbutton_scale.signal_toggled().connect(sigc::mem_fun(*this,&StateRotate_Context::refresh_scale_flag));
 184
 185         options_table.show_all();
 186         refresh_tool_options();
 187         //App::dialog_tool_options->set_widget(options_table);
 188         App::dialog_tool_options->present();
 189
 190         get_work_area()->set_allow_layer_clicks(true);
 191         get_work_area()->set_duck_dragger(duck_dragger_);
 192
 193 //      get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 194         get_canvas_view()->work_area->reset_cursor();
 195
 196         App::toolbox->refresh();
 197
 198         load_settings();
 199         refresh_scale_flag();
 200 }
 201
 202 void
 203 StateRotate_Context::refresh_tool_options()
 204 {
 205         App::dialog_tool_options->clear();
 206         App::dialog_tool_options->set_widget(options_table);
 207         App::dialog_tool_options->set_local_name(_("Rotate Tool"));
 208         App::dialog_tool_options->set_name("rotate");
 209 }
 210
 211 Smach::event_result
 212 StateRotate_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 213 {
 214         refresh_tool_options();
 215         return Smach::RESULT_ACCEPT;
 216 }
 217
 218 StateRotate_Context::~StateRotate_Context()
 219 {
 220         save_settings();
 221
 222         get_work_area()->clear_duck_dragger();
 223         get_canvas_view()->work_area->reset_cursor();
 224
 225         App::dialog_tool_options->clear();
 226
 227         App::toolbox->refresh();
 228 }
 229
 230
 231
 232
 233 DuckDrag_Rotate::DuckDrag_Rotate()
 234 {
 235         use_magnitude=true;
 236 }
 237
 238 void
 239 DuckDrag_Rotate::begin_duck_drag(Duckmatic* duckmatic, const synfig::Vector& offset)
 240 {
 241         last_rotate=Vector(1,1);
 242
 243         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 244         DuckList::const_iterator iter;
 245
 246 /*
 247         if(duckmatic->get_selected_ducks().size()<2)
 248         {
 249                 bad_drag=true;
 250                 return;
 251         }
 252 */
 253         bad_drag=false;
 254
 255                 drag_offset=duckmatic->find_duck(offset)->get_trans_point();
 256
 257                 //snap=drag_offset-duckmatic->snap_point_to_grid(drag_offset);
 258                 //snap=offset-drag_offset;
 259                 snap=Vector(0,0);
 260
 261         // Calculate center
 262         Point vmin(100000000,100000000);
 263         Point vmax(-100000000,-100000000);
 264         //std::set<etl::handle<Duck> >::iterator iter;
 265         positions.clear();
 266         int i;
 267         for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 268         {
 269                 Point p((*iter)->get_trans_point());
 270                 vmin[0]=min(vmin[0],p[0]);
 271                 vmin[1]=min(vmin[1],p[1]);
 272                 vmax[0]=max(vmax[0],p[0]);
 273                 vmax[1]=max(vmax[1],p[1]);
 274                 positions.push_back(p);
 275         }
 276         center=(vmin+vmax)*0.5;
 277         if((vmin-vmax).mag()<=EPSILON)
 278                 move_only=true;
 279         else
 280                 move_only=false;
 281
 282
 283         synfig::Vector vect(offset-center);
 284         original_angle=Angle::tan(vect[1],vect[0]);
 285         original_mag=vect.mag();
 286 }
 287
 288
 289 void
 290 DuckDrag_Rotate::duck_drag(Duckmatic* duckmatic, const synfig::Vector& vector)
 291 {
 292         if(bad_drag)
 293                 return;
 294
 295         //std::set<etl::handle<Duck> >::iterator iter;
 296         synfig::Vector vect(duckmatic->snap_point_to_grid(vector)-center+snap);
 297
 298         const DuckList selected_ducks(duckmatic->get_selected_ducks());
 299         DuckList::const_iterator iter;
 300
 301         if(move_only)
 302         {
 303                 int i;
 304                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 305                 {
 306                         if((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION)continue;
 307
 308                         Vector p(positions[i]);
 309
 310                         p[0]+=vect[0];
 311                         p[1]+=vect[1];
 312                         (*iter)->set_trans_point(p);
 313                 }
 314                 for(i=0,iter=selected_ducks.begin();iter!=selected_ducks.end();++iter,i++)
 315                 {
 316                         if(!((*iter)->get_type()!=Duck::TYPE_VERTEX&&(*iter)->get_type()!=Duck::TYPE_POSITION))continue;
 317
 318                         Vector p(positions[i]);
 319
 320                         p[0]+=vect[0];
 321                         p[1]+=vect[1];
 322                         (*iter)->set_trans_point(p);
 323                 }
 324                 return;
 325         }
 326
 327         Angle::tan angle(vect[1],vect[0]);
 328         angle=original_angle-angle;
 329         Real mag(vect.mag()/original_mag);
 330         Real sine(Angle::sin(angle).get());
 331         Real cosine(Angle::cos(angle).get());
 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 x(positions[i]-center),p;
 339
 340                 p[0]=cosine*x[0]+sine*x[1];
 341                 p[1]=-sine*x[0]+cosine*x[1];
 342                 if(use_magnitude)p*=mag;
 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 x(positions[i]-center),p;
 351
 352                 p[0]=cosine*x[0]+sine*x[1];
 353                 p[1]=-sine*x[0]+cosine*x[1];
 354                 if(use_magnitude)p*=mag;
 355                 p+=center;
 356                 (*iter)->set_trans_point(p);
 357         }
 358
 359         last_rotate=vect;
 360         //snap=Vector(0,0);
 361 }
 362
 363 bool
 364 DuckDrag_Rotate::end_duck_drag(Duckmatic* duckmatic)
 365 {
 366         if(bad_drag)return false;
 367         if(move_only)
 368         {
 369                 synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Move Duck"));
 370                 duckmatic->signal_edited_selected_ducks();
 371                 return true;
 372         }
 373
 374         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("Rotate Ducks"));
 375
 376         if((last_rotate-Vector(1,1)).mag()>0.0001)
 377         {
 378                 duckmatic->signal_edited_selected_ducks();
 379                 return true;
 380         }
 381         else
 382         {
 383                 duckmatic->signal_user_click_selected_ducks(0);
 384                 return false;
 385         }
 386 }