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