src/gui.cpp

   1 /* Calf DSP Library
   2  * GUI functions for a plugin.
   3  * Copyright (C) 2007-2009 Krzysztof Foltman
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this program; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <config.h>
  22 #include <assert.h>
  23 #include <calf/giface.h>
  24 #include <calf/gui.h>
  25 #include <calf/gui_controls.h>
  26 #include <calf/preset.h>
  27 #include <calf/preset_gui.h>
  28 #include <calf/main_win.h>
  29 #include <gdk/gdk.h>
  30
  31 #include <iostream>
  32
  33 using namespace calf_plugins;
  34 using namespace std;
  35
  36 /******************************** control base classes **********************/
  37
  38 void control_container::set_std_properties()
  39 {
  40     if (attribs.find("widget-name") != attribs.end())
  41     {
  42         string name = attribs["widget-name"];
  43         if (container) {
  44             gtk_widget_set_name(GTK_WIDGET(container), name.c_str());
  45         }
  46     }
  47 }
  48
  49 void param_control::set_std_properties()
  50 {
  51     if (attribs.find("widget-name") != attribs.end())
  52     {
  53         string name = attribs["widget-name"];
  54         if (widget) {
  55             gtk_widget_set_name(widget, name.c_str());
  56         }
  57     }
  58 }
  59
  60 GtkWidget *param_control::create_label()
  61 {
  62     label = gtk_label_new ("");
  63     gtk_label_set_width_chars (GTK_LABEL (label), 12);
  64     gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  65     return label;
  66 }
  67
  68 void param_control::update_label()
  69 {
  70     parameter_properties &props = get_props();
  71     gtk_label_set_text (GTK_LABEL (label), props.to_string(gui->plugin->get_param_value(param_no)).c_str());
  72 }
  73
  74 void param_control::hook_params()
  75 {
  76     if (param_no != -1) {
  77         gui->add_param_ctl(param_no, this);
  78     }
  79     gui->params.push_back(this);
  80 }
  81
  82 param_control::~param_control()
  83 {
  84     if (label)
  85         gtk_widget_destroy(label);
  86     if (widget)
  87         gtk_widget_destroy(widget);
  88 }
  89
  90 /******************************** GUI proper ********************************/
  91
  92 plugin_gui::plugin_gui(plugin_gui_window *_window)
  93 : last_status_serial_no(0)
  94 , window(_window)
  95 {
  96     ignore_stack = 0;
  97     top_container = NULL;
  98     current_control = NULL;
  99     param_count = 0;
 100     container = NULL;
 101     effect_name = NULL;
 102 }
 103
 104 static void window_destroyed(GtkWidget *window, gpointer data)
 105 {
 106     delete (plugin_gui_window *)data;
 107 }
 108
 109 static void action_destroy_notify(gpointer data)
 110 {
 111     delete (activate_preset_params *)data;
 112 }
 113
 114 void control_base::require_attribute(const char *name)
 115 {
 116     if (attribs.count(name) == 0) {
 117         g_error("Missing attribute: %s", name);
 118     }
 119 }
 120
 121 void control_base::require_int_attribute(const char *name)
 122 {
 123     if (attribs.count(name) == 0) {
 124         g_error("Missing attribute: %s", name);
 125     }
 126     if (attribs[name].empty() || attribs[name].find_first_not_of("0123456789") != string::npos) {
 127         g_error("Wrong data type on attribute: %s (required integer)", name);
 128     }
 129 }
 130
 131 int control_base::get_int(const char *name, int def_value)
 132 {
 133     if (attribs.count(name) == 0)
 134         return def_value;
 135     const std::string &v = attribs[name];
 136     if (v.empty() || v.find_first_not_of("-+0123456789") != string::npos)
 137         return def_value;
 138     return atoi(v.c_str());
 139 }
 140
 141 float control_base::get_float(const char *name, float def_value)
 142 {
 143     if (attribs.count(name) == 0)
 144         return def_value;
 145     const std::string &v = attribs[name];
 146     if (v.empty() || v.find_first_not_of("-+0123456789.") != string::npos)
 147         return def_value;
 148     stringstream ss(v);
 149     float value;
 150     ss >> value;
 151     return value;
 152 }
 153
 154 /******************************** GUI proper ********************************/
 155
 156 param_control *plugin_gui::create_control_from_xml(const char *element, const char *attributes[])
 157 {
 158     if (!strcmp(element, "knob"))
 159         return new knob_param_control;
 160     if (!strcmp(element, "hscale"))
 161         return new hscale_param_control;
 162     if (!strcmp(element, "vscale"))
 163         return new vscale_param_control;
 164     if (!strcmp(element, "combo"))
 165         return new combo_box_param_control;
 166     if (!strcmp(element, "check"))
 167         return new check_param_control;
 168     if (!strcmp(element, "toggle"))
 169         return new toggle_param_control;
 170     if (!strcmp(element, "spin"))
 171         return new spin_param_control;
 172     if (!strcmp(element, "button"))
 173         return new button_param_control;
 174     if (!strcmp(element, "label"))
 175         return new label_param_control;
 176     if (!strcmp(element, "value"))
 177         return new value_param_control;
 178     if (!strcmp(element, "vumeter"))
 179         return new vumeter_param_control;
 180     if (!strcmp(element, "line-graph"))
 181         return new line_graph_param_control;
 182     if (!strcmp(element, "keyboard"))
 183         return new keyboard_param_control;
 184     if (!strcmp(element, "curve"))
 185         return new curve_param_control;
 186     if (!strcmp(element, "led"))
 187         return new led_param_control;
 188     if (!strcmp(element, "entry"))
 189         return new entry_param_control;
 190     if (!strcmp(element, "filechooser"))
 191         return new filechooser_param_control;
 192     if (!strcmp(element, "listview"))
 193         return new listview_param_control;
 194     return NULL;
 195 }
 196
 197 control_container *plugin_gui::create_container_from_xml(const char *element, const char *attributes[])
 198 {
 199     if (!strcmp(element, "table"))
 200         return new table_container;
 201     if (!strcmp(element, "vbox"))
 202         return new vbox_container;
 203     if (!strcmp(element, "hbox"))
 204         return new hbox_container;
 205     if (!strcmp(element, "align"))
 206         return new alignment_container;
 207     if (!strcmp(element, "frame"))
 208         return new frame_container;
 209     if (!strcmp(element, "notebook"))
 210         return new notebook_container;
 211     if (!strcmp(element, "scrolled"))
 212         return new scrolled_container;
 213     return NULL;
 214 }
 215
 216 void plugin_gui::xml_element_start(void *data, const char *element, const char *attributes[])
 217 {
 218     plugin_gui *gui = (plugin_gui *)data;
 219     gui->xml_element_start(element, attributes);
 220 }
 221
 222 void plugin_gui::xml_element_start(const char *element, const char *attributes[])
 223 {
 224     if (ignore_stack) {
 225         ignore_stack++;
 226         return;
 227     }
 228     control_base::xml_attribute_map xam;
 229     while(*attributes)
 230     {
 231         xam[attributes[0]] = attributes[1];
 232         attributes += 2;
 233     }
 234
 235     if (!strcmp(element, "if"))
 236     {
 237         if (!xam.count("cond") || xam["cond"].empty())
 238         {
 239             g_error("Incorrect <if cond=\"[!]symbol\"> element");
 240         }
 241         string cond = xam["cond"];
 242         bool state = true;
 243         if (cond.substr(0, 1) == "!") {
 244             state = false;
 245             cond.erase(0, 1);
 246         }
 247         if (window->main->check_condition(cond.c_str()) == state)
 248             return;
 249         ignore_stack = 1;
 250         return;
 251     }
 252     control_container *cc = create_container_from_xml(element, attributes);
 253     if (cc != NULL)
 254     {
 255         cc->attribs = xam;
 256         cc->create(this, element, xam);
 257         cc->set_std_properties();
 258         gtk_container_set_border_width(cc->container, cc->get_int("border"));
 259
 260         container_stack.push_back(cc);
 261         current_control = NULL;
 262         return;
 263     }
 264     if (!container_stack.empty())
 265     {
 266         current_control = create_control_from_xml(element, attributes);
 267         if (current_control)
 268         {
 269             current_control->attribs = xam;
 270             int param_no = -1;
 271             if (xam.count("param"))
 272             {
 273                 map<string, int>::iterator it = param_name_map.find(xam["param"]);
 274                 if (it == param_name_map.end())
 275                     g_error("Unknown parameter %s", xam["param"].c_str());
 276                 else
 277                     param_no = it->second;
 278             }
 279             if (param_no != -1)
 280                 current_control->param_variable = plugin->get_param_props(param_no)->short_name;
 281             current_control->create(this, param_no);
 282             current_control->set_std_properties();
 283             current_control->init_xml(element);
 284             current_control->set();
 285             current_control->hook_params();
 286             return;
 287         }
 288     }
 289     g_error("Unxpected element %s in GUI definition\n", element);
 290 }
 291
 292 void plugin_gui::xml_element_end(void *data, const char *element)
 293 {
 294     plugin_gui *gui = (plugin_gui *)data;
 295     if (gui->ignore_stack) {
 296         gui->ignore_stack--;
 297         return;
 298     }
 299     if (!strcmp(element, "if"))
 300     {
 301         return;
 302     }
 303     if (gui->current_control)
 304     {
 305         (*gui->container_stack.rbegin())->add(gui->current_control->widget, gui->current_control);
 306         gui->current_control = NULL;
 307         return;
 308     }
 309     unsigned int ss = gui->container_stack.size();
 310     if (ss > 1) {
 311         gui->container_stack[ss - 2]->add(GTK_WIDGET(gui->container_stack[ss - 1]->container), gui->container_stack[ss - 1]);
 312     }
 313     else
 314         gui->top_container = gui->container_stack[0];
 315     gui->container_stack.pop_back();
 316 }
 317
 318
 319 GtkWidget *plugin_gui::create_from_xml(plugin_ctl_iface *_plugin, const char *xml)
 320 {
 321     current_control = NULL;
 322     top_container = NULL;
 323     parser = XML_ParserCreate("UTF-8");
 324     plugin = _plugin;
 325     container_stack.clear();
 326     ignore_stack = 0;
 327
 328     param_name_map.clear();
 329     int size = plugin->get_param_count();
 330     for (int i = 0; i < size; i++)
 331         param_name_map[plugin->get_param_props(i)->short_name] = i;
 332
 333     XML_SetUserData(parser, this);
 334     XML_SetElementHandler(parser, xml_element_start, xml_element_end);
 335     XML_Status status = XML_Parse(parser, xml, strlen(xml), 1);
 336     if (status == XML_STATUS_ERROR)
 337     {
 338         g_error("Parse error: %s in XML", XML_ErrorString(XML_GetErrorCode(parser)));
 339     }
 340
 341     XML_ParserFree(parser);
 342     last_status_serial_no = plugin->send_status_updates(this, 0);
 343     return GTK_WIDGET(top_container->container);
 344 }
 345
 346 void plugin_gui::send_configure(const char *key, const char *value)
 347 {
 348     // XXXKF this should really be replaced by a separate list of SCI-capable param controls
 349     for (unsigned int i = 0; i < params.size(); i++)
 350     {
 351         assert(params[i] != NULL);
 352         send_configure_iface *sci = dynamic_cast<send_configure_iface *>(params[i]);
 353         if (sci)
 354             sci->send_configure(key, value);
 355     }
 356 }
 357
 358 void plugin_gui::send_status(const char *key, const char *value)
 359 {
 360     // XXXKF this should really be replaced by a separate list of SUI-capable param controls
 361     for (unsigned int i = 0; i < params.size(); i++)
 362     {
 363         assert(params[i] != NULL);
 364         send_updates_iface *sui = dynamic_cast<send_updates_iface *>(params[i]);
 365         if (sui)
 366             sui->send_status(key, value);
 367     }
 368 }
 369
 370 void plugin_gui::on_idle()
 371 {
 372     for (unsigned int i = 0; i < params.size(); i++)
 373     {
 374         if (params[i]->param_no != -1)
 375         {
 376             parameter_properties &props = *plugin->get_param_props(params[i]->param_no);
 377             bool is_output = (props.flags & PF_PROP_OUTPUT) != 0;
 378             if (is_output) {
 379                 params[i]->set();
 380             }
 381         }
 382         params[i]->on_idle();
 383     }
 384     last_status_serial_no = plugin->send_status_updates(this, last_status_serial_no);
 385     // XXXKF iterate over par2ctl, too...
 386 }
 387
 388 void plugin_gui::refresh()
 389 {
 390     for (unsigned int i = 0; i < params.size(); i++)
 391         params[i]->set();
 392     plugin->send_configures(this);
 393     last_status_serial_no = plugin->send_status_updates(this, last_status_serial_no);
 394 }
 395
 396 void plugin_gui::refresh(int param_no, param_control *originator)
 397 {
 398     std::multimap<int, param_control *>::iterator it = par2ctl.find(param_no);
 399     while(it != par2ctl.end() && it->first == param_no)
 400     {
 401         if (it->second != originator)
 402             it->second->set();
 403         it++;
 404     }
 405 }
 406
 407 void plugin_gui::set_param_value(int param_no, float value, param_control *originator)
 408 {
 409     plugin->set_param_value(param_no, value);
 410     refresh(param_no);
 411 }
 412
 413 plugin_gui::~plugin_gui()
 414 {
 415     for (std::vector<param_control *>::iterator i = params.begin(); i != params.end(); i++)
 416     {
 417         delete *i;
 418     }
 419 }
 420
 421
 422 /******************************* Actions **************************************************/
 423
 424 static void store_preset_action(GtkAction *action, plugin_gui_window *gui_win)
 425 {
 426     store_preset(GTK_WINDOW(gui_win->toplevel), gui_win->gui);
 427 }
 428
 429 static const GtkActionEntry actions[] = {
 430     { "PresetMenuAction", NULL, "_Preset", NULL, "Preset operations", NULL },
 431     { "BuiltinPresetMenuAction", NULL, "_Built-in", NULL, "Built-in (factory) presets", NULL },
 432     { "UserPresetMenuAction", NULL, "_User", NULL, "User (your) presets", NULL },
 433     { "CommandMenuAction", NULL, "_Command", NULL, "Plugin-related commands", NULL },
 434     { "store-preset", "gtk-save-as", "Store preset", NULL, "Store a current setting as preset", (GCallback)store_preset_action },
 435 };
 436
 437 /***************************** GUI window ********************************************/
 438
 439 static const char *ui_xml =
 440 "<ui>\n"
 441 "  <menubar>\n"
 442 "    <menu action=\"PresetMenuAction\">\n"
 443 "      <menuitem action=\"store-preset\"/>\n"
 444 "      <separator/>\n"
 445 "      <placeholder name=\"builtin_presets\"/>\n"
 446 "      <separator/>\n"
 447 "      <placeholder name=\"user_presets\"/>\n"
 448 "    </menu>\n"
 449 "    <placeholder name=\"commands\"/>\n"
 450 "  </menubar>\n"
 451 "</ui>\n"
 452 ;
 453
 454 static const char *general_preset_pre_xml =
 455 "<ui>\n"
 456 "  <menubar>\n"
 457 "    <menu action=\"PresetMenuAction\">\n";
 458
 459 static const char *builtin_preset_pre_xml =
 460 "        <placeholder name=\"builtin_presets\">\n";
 461
 462 static const char *user_preset_pre_xml =
 463 "        <placeholder name=\"user_presets\">\n";
 464
 465 static const char *preset_post_xml =
 466 "        </placeholder>\n"
 467 "    </menu>\n"
 468 "  </menubar>\n"
 469 "</ui>\n"
 470 ;
 471
 472 static const char *command_pre_xml =
 473 "<ui>\n"
 474 "  <menubar>\n"
 475 "    <placeholder name=\"commands\">\n"
 476 "      <menu action=\"CommandMenuAction\">\n";
 477
 478 static const char *command_post_xml =
 479 "      </menu>\n"
 480 "    </placeholder>\n"
 481 "  </menubar>\n"
 482 "</ui>\n"
 483 ;
 484
 485 plugin_gui_window::plugin_gui_window(main_window_iface *_main)
 486 {
 487     toplevel = NULL;
 488     ui_mgr = NULL;
 489     std_actions = NULL;
 490     builtin_preset_actions = NULL;
 491     user_preset_actions = NULL;
 492     command_actions = NULL;
 493     main = _main;
 494     assert(main);
 495 }
 496
 497 string plugin_gui_window::make_gui_preset_list(GtkActionGroup *grp, bool builtin, char &ch)
 498 {
 499     string preset_xml = string(general_preset_pre_xml) + (builtin ? builtin_preset_pre_xml : user_preset_pre_xml);
 500     preset_vector &pvec = (builtin ? get_builtin_presets() : get_user_presets()).presets;
 501     GtkActionGroup *preset_actions = builtin ? builtin_preset_actions : user_preset_actions;
 502     for (unsigned int i = 0; i < pvec.size(); i++)
 503     {
 504         if (pvec[i].plugin != gui->effect_name)
 505             continue;
 506         stringstream ss;
 507         ss << (builtin ? "builtin_preset" : "user_preset") << i;
 508         preset_xml += "          <menuitem name=\"" + pvec[i].name+"\" action=\""+ss.str()+"\"/>\n";
 509         if (ch != ' ' && ++ch == ':')
 510             ch = 'A';
 511         if (ch > 'Z')
 512             ch = ' ';
 513
 514         string sv = ss.str();
 515         string prefix = ch == ' ' ? string() : string("_")+ch+" ";
 516         string name = prefix + pvec[i].name;
 517         GtkActionEntry ae = { sv.c_str(), NULL, name.c_str(), NULL, NULL, (GCallback)activate_preset };
 518         gtk_action_group_add_actions_full(preset_actions, &ae, 1, (gpointer)new activate_preset_params(gui, i, builtin), action_destroy_notify);
 519     }
 520     preset_xml += preset_post_xml;
 521     return preset_xml;
 522 }
 523
 524 string plugin_gui_window::make_gui_command_list(GtkActionGroup *grp)
 525 {
 526     string command_xml = command_pre_xml;
 527     plugin_command_info *ci = gui->plugin->get_commands();
 528     if (!ci)
 529         return "";
 530     for(int i = 0; ci->name; i++, ci++)
 531     {
 532         stringstream ss;
 533         ss << "          <menuitem name=\"" << ci->name << "\" action=\"" << ci->label << "\"/>\n";
 534
 535         GtkActionEntry ae = { ci->label, NULL, ci->name, NULL, ci->description, (GCallback)activate_command };
 536         gtk_action_group_add_actions_full(command_actions, &ae, 1, (gpointer)new activate_command_params(gui, i), action_destroy_notify);
 537         command_xml += ss.str();
 538     }
 539     command_xml += command_post_xml;
 540     return command_xml;
 541 }
 542
 543 void plugin_gui_window::fill_gui_presets(bool builtin, char &ch)
 544 {
 545     GtkActionGroup *&preset_actions = builtin ? builtin_preset_actions : user_preset_actions;
 546     if(preset_actions) {
 547         gtk_ui_manager_remove_action_group(ui_mgr, preset_actions);
 548         preset_actions = NULL;
 549     }
 550
 551     if (builtin)
 552         builtin_preset_actions = gtk_action_group_new("builtin_presets");
 553     else
 554         user_preset_actions = gtk_action_group_new("user_presets");
 555     string preset_xml = make_gui_preset_list(preset_actions, builtin, ch);
 556     gtk_ui_manager_insert_action_group(ui_mgr, preset_actions, 0);
 557     GError *error = NULL;
 558     gtk_ui_manager_add_ui_from_string(ui_mgr, preset_xml.c_str(), -1, &error);
 559 }
 560
 561 gboolean plugin_gui_window::on_idle(void *data)
 562 {
 563     plugin_gui_window *self = (plugin_gui_window *)data;
 564     self->gui->on_idle();
 565     return TRUE;
 566 }
 567
 568 void plugin_gui_window::create(plugin_ctl_iface *_jh, const char *title, const char *effect)
 569 {
 570     toplevel = GTK_WINDOW(gtk_window_new (GTK_WINDOW_TOPLEVEL));
 571     gtk_window_set_default_icon_name("calf");
 572     gtk_widget_set_name(GTK_WIDGET(toplevel), "calf-plugin");
 573     gtk_window_set_type_hint(toplevel, GDK_WINDOW_TYPE_HINT_DIALOG);
 574     GtkVBox *vbox = GTK_VBOX(gtk_vbox_new(false, 5));
 575
 576     GtkRequisition req, req2;
 577     gtk_window_set_title(GTK_WINDOW (toplevel), title);
 578     gtk_container_add(GTK_CONTAINER(toplevel), GTK_WIDGET(vbox));
 579
 580     gui = new plugin_gui(this);
 581     gui->effect_name = effect;
 582
 583     ui_mgr = gtk_ui_manager_new();
 584     std_actions = gtk_action_group_new("default");
 585     gtk_action_group_add_actions(std_actions, actions, sizeof(actions)/sizeof(actions[0]), this);
 586     GError *error = NULL;
 587     gtk_ui_manager_insert_action_group(ui_mgr, std_actions, 0);
 588     gtk_ui_manager_add_ui_from_string(ui_mgr, ui_xml, -1, &error);
 589
 590     command_actions = gtk_action_group_new("commands");
 591
 592     char ch = '0';
 593     fill_gui_presets(true, ch);
 594     fill_gui_presets(false, ch);
 595
 596     gtk_box_pack_start(GTK_BOX(vbox), gtk_ui_manager_get_widget(ui_mgr, "/ui/menubar"), false, false, 0);
 597
 598     // determine size without content
 599     gtk_widget_show_all(GTK_WIDGET(vbox));
 600     gtk_widget_size_request(GTK_WIDGET(vbox), &req2);
 601     // printf("size request %dx%d\n", req2.width, req2.height);
 602
 603     GtkWidget *container;
 604     const char *xml = _jh->get_gui_xml();
 605     assert(xml);
 606     container = gui->create_from_xml(_jh, xml);
 607
 608     string command_xml = make_gui_command_list(command_actions);
 609     gtk_ui_manager_insert_action_group(ui_mgr, command_actions, 0);
 610     gtk_ui_manager_add_ui_from_string(ui_mgr, command_xml.c_str(), -1, &error);
 611
 612     GtkWidget *sw = gtk_scrolled_window_new(NULL, NULL);
 613     gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 614     gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(sw), GTK_SHADOW_NONE);
 615     gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw), container);
 616
 617     gtk_box_pack_start(GTK_BOX(vbox), sw, true, true, 0);
 618
 619     gtk_widget_show_all(GTK_WIDGET(sw));
 620     gtk_widget_size_request(container, &req);
 621     int wx = max(req.width + 10, req2.width);
 622     int wy = req.height + req2.height + 10;
 623     // printf("size request %dx%d\n", req.width, req.height);
 624     // printf("resize to %dx%d\n", max(req.width + 10, req2.width), req.height + req2.height + 10);
 625     gtk_window_set_default_size(GTK_WINDOW(toplevel), wx, wy);
 626     gtk_window_resize(GTK_WINDOW(toplevel), wx, wy);
 627     //gtk_widget_set_size_request(GTK_WIDGET(toplevel), max(req.width + 10, req2.width), req.height + req2.height + 10);
 628     // printf("size set %dx%d\n", wx, wy);
 629     // gtk_scrolled_window_set_vadjustment(GTK_SCROLLED_WINDOW(sw), GTK_ADJUSTMENT(gtk_adjustment_new(0, 0, req.height, 20, 100, 100)));
 630     gtk_signal_connect (GTK_OBJECT (toplevel), "destroy", G_CALLBACK (window_destroyed), (plugin_gui_window *)this);
 631     main->set_window(gui->plugin, this);
 632
 633     source_id = g_timeout_add_full(G_PRIORITY_LOW, 1000/30, on_idle, this, NULL); // 30 fps should be enough for everybody
 634     gtk_ui_manager_ensure_update(ui_mgr);
 635     gui->plugin->send_configures(gui);
 636 }
 637
 638 void plugin_gui_window::close()
 639 {
 640     if (source_id)
 641         g_source_remove(source_id);
 642     source_id = 0;
 643     gtk_widget_destroy(GTK_WIDGET(toplevel));
 644 }
 645
 646 plugin_gui_window::~plugin_gui_window()
 647 {
 648     if (source_id)
 649         g_source_remove(source_id);
 650     main->set_window(gui->plugin, NULL);
 651     delete gui;
 652 }
 653
 654 void calf_plugins::activate_command(GtkAction *action, activate_command_params *params)
 655 {
 656     plugin_gui *gui = params->gui;
 657     gui->plugin->execute(params->function_idx);
 658     gui->refresh();
 659 }
 660
 661