synfig-studio/tags/synfigstudio_0_61_07_rc2/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 #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 enum
  66 {
  67         GRADIENT_INTERPOLATION_LINEAR=0,
  68         GRADIENT_RADIAL=1,
  69         GRADIENT_CONICAL=2,
  70         GRADIENT_SPIRAL=3
  71 };
  72
  73 /* === G L O B A L S ======================================================= */
  74
  75 StateGradient studio::state_gradient;
  76
  77 /* === C L A S S E S & S T R U C T S ======================================= */
  78
  79 class studio::StateGradient_Context : public sigc::trackable
  80 {
  81         etl::handle<CanvasView> canvas_view_;
  82         CanvasView::IsWorking is_working;
  83
  84         Duckmatic::Push duckmatic_push;
  85
  86         synfigapp::Settings& settings;
  87
  88         Point point_holder;
  89
  90         etl::handle<Duck> point2_duck;
  91
  92         void refresh_ducks();
  93
  94         bool prev_workarea_layer_status_;
  95
  96         Gtk::Table options_table;
  97         Gtk::Entry entry_id;
  98         Widget_Enum enum_type;
  99         Widget_Enum     enum_blend;
 100
 101 public:
 102         synfig::String get_id()const { return entry_id.get_text(); }
 103         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 104
 105         int get_type()const { return enum_type.get_value(); }
 106         void set_type(int x) { return enum_type.set_value(x); }
 107
 108         int get_blend()const { return enum_blend.get_value(); }
 109         void set_blend(int x) { return enum_blend.set_value(x); }
 110
 111         Smach::event_result event_stop_handler(const Smach::event& x);
 112
 113         Smach::event_result event_refresh_handler(const Smach::event& x);
 114
 115         Smach::event_result event_mouse_click_handler(const Smach::event& x);
 116         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 117
 118         void refresh_tool_options();
 119
 120         StateGradient_Context(CanvasView* canvas_view);
 121
 122         ~StateGradient_Context();
 123
 124         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 125         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 126         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 127         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 128
 129         //void on_user_click(synfig::Point point);
 130         void load_settings();
 131         void save_settings();
 132         void reset();
 133         void increment_id();
 134
 135         void make_gradient(const Point& p1, const Point& p2);
 136         bool egress_on_selection_change;
 137         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
 138         {
 139                 if(egress_on_selection_change)
 140                         throw Smach::egress_exception();
 141                 return Smach::RESULT_OK;
 142         }
 143
 144 };      // END of class StateGradient_Context
 145
 146 /* === M E T H O D S ======================================================= */
 147
 148 StateGradient::StateGradient():
 149         Smach::state<StateGradient_Context>("gradient")
 150 {
 151         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StateGradient_Context::event_layer_selection_changed_handler));
 152         insert(event_def(EVENT_STOP,&StateGradient_Context::event_stop_handler));
 153         insert(event_def(EVENT_TABLES_SHOW,&StateGradient_Context::event_stop_handler));
 154         insert(event_def(EVENT_REFRESH,&StateGradient_Context::event_refresh_handler));
 155         insert(event_def(EVENT_REFRESH_DUCKS,&StateGradient_Context::event_refresh_handler));
 156         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateGradient_Context::event_mouse_click_handler));
 157         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateGradient_Context::event_mouse_click_handler));
 158         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateGradient_Context::event_mouse_click_handler));
 159         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateGradient_Context::event_refresh_tool_options));
 160 }
 161
 162 StateGradient::~StateGradient()
 163 {
 164 }
 165
 166 void
 167 StateGradient_Context::load_settings()
 168 {
 169         String value;
 170
 171         if(settings.get_value("gradient.id",value))
 172                 set_id(value);
 173         else
 174                 set_id("Gradient");
 175
 176         if(settings.get_value("gradient.type",value))
 177                 set_type(atoi(value.c_str()));
 178         else
 179                 set_type(GRADIENT_INTERPOLATION_LINEAR);
 180
 181         if(settings.get_value("gradient.blend",value))
 182                 set_blend(atoi(value.c_str()));
 183         else
 184                 set_blend(Color::BLEND_COMPOSITE);
 185 }
 186
 187 void
 188 StateGradient_Context::save_settings()
 189 {
 190         settings.set_value("gradient.id",get_id().c_str());
 191         settings.set_value("gradient.type",strprintf("%d",get_type()));
 192         settings.set_value("gradient.blend",strprintf("%d",get_blend()));
 193 }
 194
 195 void
 196 StateGradient_Context::reset()
 197 {
 198         refresh_ducks();
 199 }
 200
 201 void
 202 StateGradient_Context::increment_id()
 203 {
 204         String id(get_id());
 205         int number=1;
 206         int digits=0;
 207
 208         if(id.empty())
 209                 id="Gradient";
 210
 211         // If there is a number
 212         // already at the end of the
 213         // id, then remove it.
 214         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 215         {
 216                 // figure out how many digits it is
 217                 for(digits=0;(int)id.size()-1>=digits && id[id.size()-1-digits]<='9' && id[id.size()-1-digits]>='0';digits++)while(false);
 218
 219                 String str_number;
 220                 str_number=String(id,id.size()-digits,id.size());
 221                 id=String(id,0,id.size()-digits);
 222
 223                 number=atoi(str_number.c_str());
 224         }
 225         else
 226         {
 227                 number=1;
 228                 digits=3;
 229         }
 230
 231         number++;
 232
 233         // Add the number back onto the id
 234         {
 235                 const String format(strprintf("%%0%dd",digits));
 236                 id+=strprintf(format.c_str(),number);
 237         }
 238
 239         // Set the ID
 240         set_id(id);
 241 }
 242
 243 StateGradient_Context::StateGradient_Context(CanvasView* canvas_view):
 244         canvas_view_(canvas_view),
 245         is_working(*canvas_view),
 246         duckmatic_push(get_work_area()),
 247         settings(synfigapp::Main::get_selected_input_device()->settings()),
 248         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 249         entry_id()
 250 {
 251         egress_on_selection_change=true;
 252         // Set up the tool options dialog
 253         ///options_table.attach(*manage(new Gtk::Label(_("Gradient Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 254         options_table.attach(entry_id, 0, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 255
 256         enum_type.set_param_desc(ParamDesc("type")
 257                 .set_local_name(_("Gradient Type"))
 258                 .set_description(_("Determines the type of Gradient used"))
 259                 .set_hint("enum")
 260                 .add_enum_value(GRADIENT_INTERPOLATION_LINEAR,"linear",_("Linear"))
 261                 .add_enum_value(GRADIENT_RADIAL,"radial",_("Radial"))
 262                 .add_enum_value(GRADIENT_CONICAL,"conical",_("Conical"))
 263                 .add_enum_value(GRADIENT_SPIRAL,"spiral",_("Spiral")));
 264
 265         enum_blend.set_param_desc(ParamDesc(Color::BLEND_COMPOSITE,"blend_method")
 266                 .set_local_name(_("Blend Method"))
 267                 .set_description(_("The blend method the gradient will use")));
 268
 269         load_settings();
 270
 271         options_table.attach(enum_type, 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 272         options_table.attach(enum_blend, 0, 2, 3, 4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 273
 274         options_table.show_all();
 275         refresh_tool_options();
 276         App::dialog_tool_options->present();
 277
 278
 279         // Turn off layer clicking
 280         get_work_area()->set_allow_layer_clicks(false);
 281
 282         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 283
 284         // clear out the ducks
 285         get_work_area()->clear_ducks();
 286
 287         // Refresh the work area
 288         get_work_area()->queue_draw();
 289
 290         get_work_area()->refresh_cursor();
 291
 292         // Hide the tables if they are showing
 293         get_canvas_view()->hide_tables();
 294
 295         // Disable the time bar
 296         //get_canvas_view()->set_sensitive_timebar(false);
 297
 298         // Connect a signal
 299         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateGradient_Context::on_user_click));
 300
 301         App::toolbox->refresh();
 302 }
 303
 304 void
 305 StateGradient_Context::refresh_tool_options()
 306 {
 307         App::dialog_tool_options->clear();
 308         App::dialog_tool_options->set_widget(options_table);
 309         App::dialog_tool_options->set_local_name(_("Gradient Tool"));
 310         App::dialog_tool_options->set_name("gradient");
 311 }
 312
 313 Smach::event_result
 314 StateGradient_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 315 {
 316         refresh_tool_options();
 317         return Smach::RESULT_ACCEPT;
 318 }
 319
 320 StateGradient_Context::~StateGradient_Context()
 321 {
 322         save_settings();
 323
 324         // Restore layer clicking
 325 //      get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 326         get_work_area()->set_allow_layer_clicks(true);
 327         get_canvas_view()->work_area->reset_cursor();
 328
 329         App::dialog_tool_options->clear();
 330
 331         // Enable the time bar
 332         //get_canvas_view()->set_sensitive_timebar(true);
 333
 334         // Bring back the tables if they were out before
 335         //if(prev_table_status)get_canvas_view()->show_tables();
 336
 337         // Refresh the work area
 338         get_work_area()->queue_draw();
 339
 340         //get_canvas_view()->show_tables();
 341
 342         get_work_area()->refresh_cursor();
 343
 344         App::toolbox->refresh();
 345 }
 346
 347 Smach::event_result
 348 StateGradient_Context::event_stop_handler(const Smach::event& /*x*/)
 349 {
 350         throw Smach::egress_exception();
 351 }
 352
 353 Smach::event_result
 354 StateGradient_Context::event_refresh_handler(const Smach::event& /*x*/)
 355 {
 356         refresh_ducks();
 357         return Smach::RESULT_ACCEPT;
 358 }
 359
 360 void
 361 StateGradient_Context::make_gradient(const Point& _p1, const Point& _p2)
 362 {
 363         synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New Gradient"));
 364         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 365
 366         Layer::Handle layer;
 367
 368         Canvas::Handle canvas(get_canvas_view()->get_canvas());
 369         int depth(0);
 370
 371         // we are temporarily using the layer to hold something
 372         layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 373         if(layer)
 374         {
 375                 depth=layer->get_depth();
 376                 canvas=layer->get_canvas();
 377         }
 378         const synfig::TransformStack& transform(get_canvas_view()->get_curr_transform_stack());
 379         const Point p1(transform.unperform(_p1));
 380         const Point p2(transform.unperform(_p2));
 381
 382         switch(get_type())
 383         {
 384         case GRADIENT_INTERPOLATION_LINEAR:
 385
 386                 layer=get_canvas_interface()->add_layer_to("linear_gradient",canvas,depth);
 387                 layer->set_param("p1",p1);
 388                 get_canvas_interface()->signal_layer_param_changed()(layer,"p1");
 389                 layer->set_param("p2",p2);
 390                 get_canvas_interface()->signal_layer_param_changed()(layer,"p2");
 391                 break;
 392         case GRADIENT_RADIAL:
 393                 layer=get_canvas_interface()->add_layer_to("radial_gradient",canvas,depth);
 394                 layer->set_param("center",p1);
 395                 get_canvas_interface()->signal_layer_param_changed()(layer,"center");
 396                 layer->set_param("radius",(p2-p1).mag());
 397                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
 398                 break;
 399         case GRADIENT_CONICAL:
 400                 layer=get_canvas_interface()->add_layer_to("conical_gradient",canvas,depth);
 401                 layer->set_param("center",p1);
 402                 get_canvas_interface()->signal_layer_param_changed()(layer,"center");
 403                 {
 404                         Vector diff(p2-p1);
 405                         layer->set_param("angle",Angle::tan(diff[1],diff[0]));
 406                         get_canvas_interface()->signal_layer_param_changed()(layer,"angle");
 407                 }
 408                 break;
 409         case GRADIENT_SPIRAL:
 410                 layer=get_canvas_interface()->add_layer_to("spiral_gradient",canvas,depth);
 411                 layer->set_param("center",p1);
 412                 get_canvas_interface()->signal_layer_param_changed()(layer,"center");
 413                 layer->set_param("radius",(p2-p1).mag());
 414                 get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
 415                 {
 416                         Vector diff(p2-p1);
 417                         layer->set_param("angle",Angle::tan(diff[1],diff[0]));
 418                         get_canvas_interface()->signal_layer_param_changed()(layer,"angle");
 419                 }
 420                 break;
 421
 422         default:
 423                 return;
 424         }
 425
 426         layer->set_param("blend_method",get_blend());
 427         get_canvas_interface()->signal_layer_param_changed()(layer,"blend_method");
 428
 429         layer->set_description(get_id());
 430         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 431
 432         egress_on_selection_change=false;
 433         get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 434         get_canvas_interface()->get_selection_manager()->set_selected_layer(layer);
 435         egress_on_selection_change=true;
 436
 437         reset();
 438         increment_id();
 439 }
 440
 441 Smach::event_result
 442 StateGradient_Context::event_mouse_click_handler(const Smach::event& x)
 443 {
 444         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 445
 446         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DOWN && event.button==BUTTON_LEFT)
 447         {
 448                 point_holder=get_work_area()->snap_point_to_grid(event.pos);
 449                 etl::handle<Duck> duck=new Duck();
 450                 duck->set_point(point_holder);
 451                 duck->set_name("p1");
 452                 duck->set_type(Duck::TYPE_POSITION);
 453                 get_work_area()->add_duck(duck);
 454
 455                 point2_duck=new Duck();
 456                 point2_duck->set_point(point_holder);
 457                 point2_duck->set_name("p2");
 458                 point2_duck->set_type(Duck::TYPE_POSITION);
 459                 get_work_area()->add_duck(point2_duck);
 460
 461                 handle<Duckmatic::Bezier> bezier(new Duckmatic::Bezier());
 462                 bezier->p1=bezier->c1=duck;
 463                 bezier->p2=bezier->c2=point2_duck;
 464                 get_work_area()->add_bezier(bezier);
 465
 466                 return Smach::RESULT_ACCEPT;
 467         }
 468
 469         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DRAG && event.button==BUTTON_LEFT)
 470         {
 471                 point2_duck->set_point(get_work_area()->snap_point_to_grid(event.pos));
 472                 get_work_area()->queue_draw();
 473                 return Smach::RESULT_ACCEPT;
 474         }
 475
 476         if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_UP && event.button==BUTTON_LEFT)
 477         {
 478                 make_gradient(point_holder, get_work_area()->snap_point_to_grid(event.pos));
 479                 get_work_area()->clear_ducks();
 480                 return Smach::RESULT_ACCEPT;
 481         }
 482
 483         return Smach::RESULT_OK;
 484 }
 485
 486
 487 void
 488 StateGradient_Context::refresh_ducks()
 489 {
 490         get_work_area()->clear_ducks();
 491         get_work_area()->queue_draw();
 492 }