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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_gradient.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_gradient.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
  51 #include "widget_enum.h"
  52 #include <synfigapp/main.h>
  53
  54 #include "general.h"
  55
  56 #endif
  57
  58 /* === U S I N G =========================================================== */
  59
  60 using namespace std;
  61 using namespace etl;
  62 using namespace synfig;
  63 using namespace studio;
  64
  65 /* === M A C R O S ========================================================= */
  66
  67 enum
  68 {
  69         GRADIENT_INTERPOLATION_LINEAR=0,
  70         GRADIENT_RADIAL=1,
  71         GRADIENT_CONICAL=2,
  72         GRADIENT_SPIRAL=3
  73 };
  74
  75 /* === G L O B A L S ======================================================= */
  76
  77 StateGradient studio::state_gradient;
  78
  79 /* === C L A S S E S & S T R U C T S ======================================= */
  80
  81 class studio::StateGradient_Context : public sigc::trackable
  82 {
  83         etl::handle<CanvasView> canvas_view_;
  84         CanvasView::IsWorking is_working;
  85
  86         Duckmatic::Push duckmatic_push;
  87
  88         synfigapp::Settings& settings;
  89
  90         Point point_holder;
  91
  92         etl::handle<Duck> point2_duck;
  93
  94         void refresh_ducks();
  95
  96         bool prev_workarea_layer_status_;
  97
  98         Gtk::Table options_table;
  99         Gtk::Entry entry_id;
 100         Widget_Enum enum_type;
 101 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 102         Widget_Enum     enum_blend;
 103 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 104
 105 public:
 106         synfig::String get_id()const { return entry_id.get_text(); }
 107         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 108
 109         int get_type()const { return enum_type.get_value(); }
 110         void set_type(int x) { return enum_type.set_value(x); }
 111
 112 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 113         int get_blend()const { return enum_blend.get_value(); }
 114         void set_blend(int x) { return enum_blend.set_value(x); }
 115 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 116
 117         Smach::event_result event_stop_handler(const Smach::event& x);
 118
 119         Smach::event_result event_refresh_handler(const Smach::event& x);
 120
 121         Smach::event_result event_mouse_click_handler(const Smach::event& x);
 122         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 123
 124         void refresh_tool_options();
 125
 126         StateGradient_Context(CanvasView* canvas_view);
 127
 128         ~StateGradient_Context();
 129
 130         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 131         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 132         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 133         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 134
 135         //void on_user_click(synfig::Point point);
 136         void load_settings();
 137         void save_settings();
 138         void reset();
 139         void increment_id();
 140
 141         void make_gradient(const Point& p1, const Point& p2);
 142         bool egress_on_selection_change;
 143         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
 144         {
 145                 if(egress_on_selection_change)
 146                         throw Smach::egress_exception();
 147                 return Smach::RESULT_OK;
 148         }
 149
 150 };      // END of class StateGradient_Context
 151
 152 /* === M E T H O D S ======================================================= */
 153
 154 StateGradient::StateGradient():
 155         Smach::state<StateGradient_Context>("gradient")
 156 {
 157         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StateGradient_Context::event_layer_selection_changed_handler));
 158         insert(event_def(EVENT_STOP,&StateGradient_Context::event_stop_handler));
 159         insert(event_def(EVENT_TABLES_SHOW,&StateGradient_Context::event_stop_handler));
 160         insert(event_def(EVENT_REFRESH,&StateGradient_Context::event_refresh_handler));
 161         insert(event_def(EVENT_REFRESH_DUCKS,&StateGradient_Context::event_refresh_handler));
 162         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateGradient_Context::event_mouse_click_handler));
 163         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateGradient_Context::event_mouse_click_handler));
 164         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateGradient_Context::event_mouse_click_handler));
 165         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateGradient_Context::event_refresh_tool_options));
 166 }
 167
 168 StateGradient::~StateGradient()
 169 {
 170 }
 171
 172 void
 173 StateGradient_Context::load_settings()
 174 {
 175         String value;
 176
 177         if(settings.get_value("gradient.id",value))
 178                 set_id(value);
 179         else
 180                 set_id("Gradient");
 181
 182         if(settings.get_value("gradient.type",value))
 183                 set_type(atoi(value.c_str()));
 184         else
 185                 set_type(GRADIENT_INTERPOLATION_LINEAR);
 186
 187 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 188         if(settings.get_value("gradient.blend",value))
 189                 set_blend(atoi(value.c_str()));
 190         else
 191                 set_blend(Color::BLEND_COMPOSITE);
 192 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 193 }
 194
 195 void
 196 StateGradient_Context::save_settings()
 197 {
 198         settings.set_value("gradient.id",get_id().c_str());
 199         settings.set_value("gradient.type",strprintf("%d",get_type()));
 200 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 201         settings.set_value("gradient.blend",strprintf("%d",get_blend()));
 202 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 203 }
 204
 205 void
 206 StateGradient_Context::reset()
 207 {
 208         refresh_ducks();
 209 }
 210
 211 void
 212 StateGradient_Context::increment_id()
 213 {
 214         String id(get_id());
 215         int number=1;
 216         int digits=0;
 217
 218         if(id.empty())
 219                 id="Gradient";
 220
 221         // If there is a number
 222         // already at the end of the
 223         // id, then remove it.
 224         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 225         {
 226                 // figure out how many digits it is
 227                 for (digits = 0;
 228                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 229                          digits++)
 230                         ;
 231
 232                 String str_number;
 233                 str_number=String(id,id.size()-digits,id.size());
 234                 id=String(id,0,id.size()-digits);
 235
 236                 number=atoi(str_number.c_str());
 237         }
 238         else
 239         {
 240                 number=1;
 241                 digits=3;
 242         }
 243
 244         number++;
 245
 246         // Add the number back onto the id
 247         {
 248                 const String format(strprintf("%%0%dd",digits));
 249                 id+=strprintf(format.c_str(),number);
 250         }
 251
 252         // Set the ID
 253         set_id(id);
 254 }
 255
 256 StateGradient_Context::StateGradient_Context(CanvasView* canvas_view):
 257         canvas_view_(canvas_view),
 258         is_working(*canvas_view),
 259         duckmatic_push(get_work_area()),
 260         settings(synfigapp::Main::get_selected_input_device()->settings()),
 261         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 262         entry_id()
 263 {
 264         egress_on_selection_change=true;
 265         // Set up the tool options dialog
 266         options_table.attach(*manage(new Gtk::Label(_("Gradient Tool"))),       0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 267         options_table.attach(entry_id,                                                                          0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 268
 269         enum_type.set_param_desc(ParamDesc("type")
 270                 .set_local_name(_("Gradient Type"))
 271                 .set_description(_("Determines the type of Gradient used"))
 272                 .set_hint("enum")
 273                 .add_enum_value(GRADIENT_INTERPOLATION_LINEAR,"linear",_("Linear"))
 274                 .add_enum_value(GRADIENT_RADIAL,"radial",_("Radial"))
 275                 .add_enum_value(GRADIENT_CONICAL,"conical",_("Conical"))
 276                 .add_enum_value(GRADIENT_SPIRAL,"spiral",_("Spiral")));
 277
 278 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 279         enum_blend.set_param_desc(ParamDesc(Color::BLEND_COMPOSITE,"blend_method")
 280                 .set_local_name(_("Blend Method"))
 281                 .set_description(_("The blend method the gradient will use")));
 282 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 283
 284         load_settings();
 285
 286         options_table.attach(enum_type, 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 287 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 288         options_table.attach(enum_blend, 0, 2, 3, 4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 289 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 290
 291         options_table.show_all();
 292         refresh_tool_options();
 293         App::dialog_tool_options->present();
 294
 295
 296         // Turn off layer clicking
 297         get_work_area()->set_allow_layer_clicks(false);
 298
 299         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 300
 301         // clear out the ducks
 302         get_work_area()->clear_ducks();
 303
 304         // Refresh the work area
 305         get_work_area()->queue_draw();
 306
 307         get_work_area()->refresh_cursor();
 308
 309         // Hide the tables if they are showing
 310         get_canvas_view()->hide_tables();
 311
 312         // Disable the time bar
 313         //get_canvas_view()->set_sensitive_timebar(false);
 314
 315         // Connect a signal
 316         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateGradient_Context::on_user_click));
 317
 318         App::toolbox->refresh();
 319 }
 320
 321 void
 322 StateGradient_Context::refresh_tool_options()
 323 {
 324         App::dialog_tool_options->clear();
 325         App::dialog_tool_options->set_widget(options_table);
 326         App::dialog_tool_options->set_local_name(_("Gradient Tool"));
 327         App::dialog_tool_options->set_name("gradient");
 328 }
 329
 330 Smach::event_result
 331 StateGradient_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 332 {
 333         refresh_tool_options();
 334         return Smach::RESULT_ACCEPT;
 335 }
 336
 337 StateGradient_Context::~StateGradient_Context()
 338 {
 339         save_settings();
 340
 341         // Restore layer clicking
 342 //      get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 343         get_work_area()->set_allow_layer_clicks(true);
 344         get_canvas_view()->work_area->reset_cursor();
 345
 346         App::dialog_tool_options->clear();
 347
 348         // Enable the time bar
 349         //get_canvas_view()->set_sensitive_timebar(true);
 350
 351         // Bring back the tables if they were out before
 352         //if(prev_table_status)get_canvas_view()->show_tables();
 353
 354         // Refresh the work area
 355         get_work_area()->queue_draw();
 356
 357         get_canvas_view()->queue_rebuild_ducks();
 358
 359         //get_canvas_view()->show_tables();
 360
 361         get_work_area()->refresh_cursor();
 362
 363         App::toolbox->refresh();
 364 }
 365
 366 Smach::event_result
 367 StateGradient_Context::event_stop_handler(const Smach::event& /*x*/)
 368 {
 369         throw Smach::egress_exception();
 370 }
 371
 372 Smach::event_result
 373 StateGradient_Context::event_refresh_handler(const Smach::event& /*x*/)
 374 {
 375         refresh_ducks();
 376         return Smach::RESULT_ACCEPT;
 377 }
 378
 379 void
 380 StateGradient_Context::make_gradient(const Point& _p1, const Point& _p2)
 381 {
 382         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New Gradient"));
 383         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 384
 385         Layer::Handle layer;
 386
 387         Canvas::Handle canvas(get_canvas_view()->get_canvas());
 388         int depth(0);
 389
 390         // we are temporarily using the layer to hold something
 391         layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 392         if(layer)
 393         {
 394                 depth=layer->get_depth();
 395                 canvas=layer->get_canvas();
 396         }
 397         const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 398         const Point p1(transform.unperform(_p1));
 399         const Point p2(transform.unperform(_p2));
 400
 401         switch(get_type())
 402         {
 403         case GRADIENT_INTERPOLATION_LINEAR:
 404
 405                 layer=get_canvas_interface()->add_layer_to("linear_gradient",canvas,depth);
 406                 layer->set_param("p1",p1);
 407                 get_canvas_interface()->signal_layer_param_changed()(layer,"p1");
 408                 layer->set_param("p2",p2);
 409                 get_canvas_interface()->signal_layer_param_changed()(layer,"p2");
 410                 break;
 411         case GRADIENT_RADIAL:
 412                 layer=get_canvas_interface()->add_layer_to("radial_gradient",canvas,depth);
 413                 layer->set_param("center",p1);
 414                 get_canvas_interface()->signal_layer_param_changed()(layer,"center");
 415                 layer->set_param("radius",(p2-p1).mag());
 416                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
 417                 break;
 418         case GRADIENT_CONICAL:
 419                 layer=get_canvas_interface()->add_layer_to("conical_gradient",canvas,depth);
 420                 layer->set_param("center",p1);
 421                 get_canvas_interface()->signal_layer_param_changed()(layer,"center");
 422                 {
 423                         Vector diff(p2-p1);
 424                         layer->set_param("angle",Angle::tan(diff[1],diff[0]));
 425                         get_canvas_interface()->signal_layer_param_changed()(layer,"angle");
 426                 }
 427                 break;
 428         case GRADIENT_SPIRAL:
 429                 layer=get_canvas_interface()->add_layer_to("spiral_gradient",canvas,depth);
 430                 layer->set_param("center",p1);
 431                 get_canvas_interface()->signal_layer_param_changed()(layer,"center");
 432                 layer->set_param("radius",(p2-p1).mag());
 433                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
 434                 {
 435                         Vector diff(p2-p1);
 436                         layer->set_param("angle",Angle::tan(diff[1],diff[0]));
 437                         get_canvas_interface()->signal_layer_param_changed()(layer,"angle");
 438                 }
 439                 break;
 440
 441         default:
 442                 return;
 443         }
 444
 445 #ifdef BLEND_METHOD_IN_TOOL_OPTIONS
 446         layer->set_param("blend_method",get_blend());
 447         get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 448 #endif  // BLEND_METHOD_IN_TOOL_OPTIONS
 449
 450         layer->set_description(get_id());
 451         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 452
 453         egress_on_selection_change=false;
 454         synfigapp::SelectionManager::LayerList layer_selection;
 455         if (!getenv("SYNFIG_TOOLS_CLEAR_SELECTION"))
 456                 layer_selection = get_canvas_view()->get_selection_manager()->get_selected_layers();
 457         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 458         layer_selection.push_back(layer);
 459         get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
 460         egress_on_selection_change=true;
 461
 462         reset();
 463         increment_id();
 464 }
 465
 466 Smach::event_result
 467 StateGradient_Context::event_mouse_click_handler(const Smach::event& x)
 468 {
 469         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 470
 471         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DOWN && event.button==BUTTON_LEFT)
 472         {
 473                 point_holder=get_work_area()->snap_point_to_grid(event.pos);
 474                 etl::handle<Duck> duck=new Duck();
 475                 duck->set_point(point_holder);
 476                 duck->set_name("p1");
 477                 duck->set_type(Duck::TYPE_POSITION);
 478                 get_work_area()->add_duck(duck);
 479
 480                 point2_duck=new Duck();
 481                 point2_duck->set_point(point_holder);
 482                 point2_duck->set_name("p2");
 483                 point2_duck->set_type(Duck::TYPE_POSITION);
 484                 get_work_area()->add_duck(point2_duck);
 485
 486                 handle<Duckmatic::Bezier> bezier(new Duckmatic::Bezier());
 487                 bezier->p1=bezier->c1=duck;
 488                 bezier->p2=bezier->c2=point2_duck;
 489                 get_work_area()->add_bezier(bezier);
 490
 491                 return Smach::RESULT_ACCEPT;
 492         }
 493
 494         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DRAG && event.button==BUTTON_LEFT)
 495         {
 496                 if (!point2_duck) return Smach::RESULT_OK;
 497                 point2_duck->set_point(get_work_area()->snap_point_to_grid(event.pos));
 498                 get_work_area()->queue_draw();
 499                 return Smach::RESULT_ACCEPT;
 500         }
 501
 502         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_UP && event.button==BUTTON_LEFT)
 503         {
 504                 make_gradient(point_holder, get_work_area()->snap_point_to_grid(event.pos));
 505                 get_work_area()->clear_ducks();
 506                 return Smach::RESULT_ACCEPT;
 507         }
 508
 509         return Smach::RESULT_OK;
 510 }
 511
 512
 513 void
 514 StateGradient_Context::refresh_ducks()
 515 {
 516         get_work_area()->clear_ducks();
 517         get_work_area()->queue_draw();
 518 }