src/gui.cpp

   1 /* Calf DSP Library
   2  * GUI functions for a plugin.
   3  * Copyright (C) 2007 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., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <config.h>
  22 #include <assert.h>
  23 #include <calf/ctl_curve.h>
  24 #include <calf/ctl_keyboard.h>
  25 #include <calf/ctl_led.h>
  26 #include <calf/giface.h>
  27 #include <calf/gui.h>
  28 #include <calf/preset.h>
  29 #include <calf/preset_gui.h>
  30 #include <calf/main_win.h>
  31
  32 #include <iostream>
  33
  34 using namespace calf_plugins;
  35 using namespace std;
  36
  37 /******************************** controls ********************************/
  38
  39 GtkWidget *param_control::create_label()
  40 {
  41     label = gtk_label_new ("");
  42     gtk_label_set_width_chars (GTK_LABEL (label), 12);
  43     gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  44     return label;
  45 }
  46
  47 void param_control::update_label()
  48 {
  49     parameter_properties &props = get_props();
  50     gtk_label_set_text (GTK_LABEL (label), props.to_string(gui->plugin->get_param_value(param_no)).c_str());
  51 }
  52
  53 void param_control::hook_params()
  54 {
  55     if (param_no != -1) {
  56         gui->add_param_ctl(param_no, this);
  57     }
  58     gui->params.push_back(this);
  59 }
  60
  61 param_control::~param_control()
  62 {
  63     if (label)
  64         gtk_widget_destroy(label);
  65     if (widget)
  66         gtk_widget_destroy(widget);
  67 }
  68
  69 // combo box
  70
  71 GtkWidget *combo_box_param_control::create(plugin_gui *_gui, int _param_no)
  72 {
  73     gui = _gui;
  74     param_no = _param_no;
  75
  76     parameter_properties &props = get_props();
  77     widget  = gtk_combo_box_new_text ();
  78     for (int j = (int)props.min; j <= (int)props.max; j++)
  79         gtk_combo_box_append_text (GTK_COMBO_BOX (widget), props.choices[j - (int)props.min]);
  80     gtk_signal_connect (GTK_OBJECT (widget), "changed", G_CALLBACK (combo_value_changed), (gpointer)this);
  81
  82     return widget;
  83 }
  84
  85 void combo_box_param_control::set()
  86 {
  87     _GUARD_CHANGE_
  88     parameter_properties &props = get_props();
  89     gtk_combo_box_set_active (GTK_COMBO_BOX (widget), (int)gui->plugin->get_param_value(param_no) - (int)props.min);
  90 }
  91
  92 void combo_box_param_control::get()
  93 {
  94     parameter_properties &props = get_props();
  95     gui->set_param_value(param_no, gtk_combo_box_get_active (GTK_COMBO_BOX(widget)) + props.min, this);
  96 }
  97
  98 void combo_box_param_control::combo_value_changed(GtkComboBox *widget, gpointer value)
  99 {
 100     param_control *jhp = (param_control *)value;
 101     jhp->get();
 102 }
 103
 104 // horizontal fader
 105
 106 GtkWidget *hscale_param_control::create(plugin_gui *_gui, int _param_no)
 107 {
 108     gui = _gui;
 109     param_no = _param_no;
 110
 111     widget = gtk_hscale_new_with_range (0, 1, get_props().get_increment());
 112     gtk_signal_connect (GTK_OBJECT (widget), "value-changed", G_CALLBACK (hscale_value_changed), (gpointer)this);
 113     gtk_signal_connect (GTK_OBJECT (widget), "format-value", G_CALLBACK (hscale_format_value), (gpointer)this);
 114     gtk_widget_set_size_request (widget, 200, -1);
 115
 116     return widget;
 117 }
 118
 119 void hscale_param_control::init_xml(const char *element)
 120 {
 121     if (attribs.count("width"))
 122         gtk_widget_set_size_request (widget, get_int("width", 200), -1);
 123     if (attribs.count("position"))
 124     {
 125         string v = attribs["position"];
 126         if (v == "top") gtk_scale_set_value_pos(GTK_SCALE(widget), GTK_POS_TOP);
 127         if (v == "bottom") gtk_scale_set_value_pos(GTK_SCALE(widget), GTK_POS_BOTTOM);
 128     }
 129 }
 130
 131 void hscale_param_control::set()
 132 {
 133     _GUARD_CHANGE_
 134     parameter_properties &props = get_props();
 135     gtk_range_set_value (GTK_RANGE (widget), props.to_01 (gui->plugin->get_param_value(param_no)));
 136     // hscale_value_changed (GTK_HSCALE (widget), (gpointer)this);
 137 }
 138
 139 void hscale_param_control::get()
 140 {
 141     parameter_properties &props = get_props();
 142     float cvalue = props.from_01 (gtk_range_get_value (GTK_RANGE (widget)));
 143     gui->set_param_value(param_no, cvalue, this);
 144 }
 145
 146 void hscale_param_control::hscale_value_changed(GtkHScale *widget, gpointer value)
 147 {
 148     hscale_param_control *jhp = (hscale_param_control *)value;
 149     jhp->get();
 150 }
 151
 152 gchar *hscale_param_control::hscale_format_value(GtkScale *widget, double arg1, gpointer value)
 153 {
 154     hscale_param_control *jhp = (hscale_param_control *)value;
 155     const parameter_properties &props = jhp->get_props();
 156     float cvalue = props.from_01 (arg1);
 157
 158     // for testing
 159     // return g_strdup_printf ("%s = %g", props.to_string (cvalue).c_str(), arg1);
 160     return g_strdup (props.to_string (cvalue).c_str());
 161 }
 162
 163 // vertical fader
 164
 165 GtkWidget *vscale_param_control::create(plugin_gui *_gui, int _param_no)
 166 {
 167     gui = _gui;
 168     param_no = _param_no;
 169
 170     widget = gtk_vscale_new_with_range (0, 1, get_props().get_increment());
 171     gtk_signal_connect (GTK_OBJECT (widget), "value-changed", G_CALLBACK (vscale_value_changed), (gpointer)this);
 172     gtk_scale_set_draw_value(GTK_SCALE(widget), FALSE);
 173     gtk_widget_set_size_request (widget, -1, 200);
 174
 175     return widget;
 176 }
 177
 178 void vscale_param_control::init_xml(const char *element)
 179 {
 180     if (attribs.count("height"))
 181         gtk_widget_set_size_request (widget, -1, get_int("height", 200));
 182 }
 183
 184 void vscale_param_control::set()
 185 {
 186     _GUARD_CHANGE_
 187     parameter_properties &props = get_props();
 188     gtk_range_set_value (GTK_RANGE (widget), props.to_01 (gui->plugin->get_param_value(param_no)));
 189     // vscale_value_changed (GTK_HSCALE (widget), (gpointer)this);
 190 }
 191
 192 void vscale_param_control::get()
 193 {
 194     parameter_properties &props = get_props();
 195     float cvalue = props.from_01 (gtk_range_get_value (GTK_RANGE (widget)));
 196     gui->set_param_value(param_no, cvalue, this);
 197 }
 198
 199 void vscale_param_control::vscale_value_changed(GtkHScale *widget, gpointer value)
 200 {
 201     vscale_param_control *jhp = (vscale_param_control *)value;
 202     jhp->get();
 203 }
 204
 205 // label
 206
 207 GtkWidget *label_param_control::create(plugin_gui *_gui, int _param_no)
 208 {
 209     gui = _gui, param_no = _param_no;
 210     string text;
 211     if (param_no != -1)
 212         text = get_props().name;
 213     else
 214         text = attribs["text"];
 215     widget = gtk_label_new(text.c_str());
 216     gtk_misc_set_alignment (GTK_MISC (widget), get_float("align-x", 0.5), get_float("align-y", 0.5));
 217     return widget;
 218 }
 219
 220 // value
 221
 222 GtkWidget *value_param_control::create(plugin_gui *_gui, int _param_no)
 223 {
 224     gui = _gui, param_no = _param_no;
 225     parameter_properties &props = get_props();
 226     widget = gtk_label_new ("");
 227     gtk_label_set_width_chars (GTK_LABEL (widget), props.get_char_count());
 228     gtk_misc_set_alignment (GTK_MISC (widget), get_float("align-x", 0.5), get_float("align-y", 0.5));
 229     return widget;
 230 }
 231
 232 void value_param_control::set()
 233 {
 234     _GUARD_CHANGE_
 235     parameter_properties &props = get_props();
 236     gtk_label_set_text (GTK_LABEL (widget), props.to_string(gui->plugin->get_param_value(param_no)).c_str());
 237 }
 238
 239 // VU meter
 240
 241 GtkWidget *vumeter_param_control::create(plugin_gui *_gui, int _param_no)
 242 {
 243     gui = _gui, param_no = _param_no;
 244     // parameter_properties &props = get_props();
 245     widget = calf_vumeter_new ();
 246     calf_vumeter_set_mode (CALF_VUMETER (widget), (CalfVUMeterMode)get_int("mode", 0));
 247     return widget;
 248 }
 249
 250 void vumeter_param_control::set()
 251 {
 252     _GUARD_CHANGE_
 253     parameter_properties &props = get_props();
 254     calf_vumeter_set_value (CALF_VUMETER (widget), props.to_01(gui->plugin->get_param_value(param_no)));
 255     if (label)
 256         update_label();
 257 }
 258
 259 // LED
 260
 261 GtkWidget *led_param_control::create(plugin_gui *_gui, int _param_no)
 262 {
 263     gui = _gui, param_no = _param_no;
 264     // parameter_properties &props = get_props();
 265     widget = calf_led_new ();
 266     return widget;
 267 }
 268
 269 void led_param_control::set()
 270 {
 271     _GUARD_CHANGE_
 272     // parameter_properties &props = get_props();
 273     calf_led_set_state (CALF_LED (widget), gui->plugin->get_param_value(param_no) > 0);
 274     if (label)
 275         update_label();
 276 }
 277
 278 // check box
 279
 280 GtkWidget *toggle_param_control::create(plugin_gui *_gui, int _param_no)
 281 {
 282     gui = _gui;
 283     param_no = _param_no;
 284
 285     widget  = gtk_check_button_new ();
 286     gtk_signal_connect (GTK_OBJECT (widget), "toggled", G_CALLBACK (toggle_value_changed), (gpointer)this);
 287     return widget;
 288 }
 289
 290 void toggle_param_control::toggle_value_changed(GtkCheckButton *widget, gpointer value)
 291 {
 292     param_control *jhp = (param_control *)value;
 293     jhp->get();
 294 }
 295
 296 void toggle_param_control::get()
 297 {
 298     const parameter_properties &props = get_props();
 299     gui->set_param_value(param_no, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON(widget)) + props.min, this);
 300 }
 301
 302 void toggle_param_control::set()
 303 {
 304     _GUARD_CHANGE_
 305     const parameter_properties &props = get_props();
 306     gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), (int)gui->plugin->get_param_value(param_no) - (int)props.min);
 307 }
 308
 309 // spin button
 310
 311 GtkWidget *spin_param_control::create(plugin_gui *_gui, int _param_no)
 312 {
 313     gui = _gui;
 314     param_no = _param_no;
 315
 316     const parameter_properties &props = get_props();
 317     if (props.step > 1)
 318         widget  = gtk_spin_button_new_with_range (props.min, props.max, (props.max - props.min) / (props.step - 1));
 319     if (props.step > 0)
 320         widget  = gtk_spin_button_new_with_range (props.min, props.max, props.step);
 321     else
 322         widget  = gtk_spin_button_new_with_range (props.min, props.max, 1);
 323     gtk_signal_connect (GTK_OBJECT (widget), "value-changed", G_CALLBACK (value_changed), (gpointer)this);
 324     return widget;
 325 }
 326
 327 void spin_param_control::value_changed(GtkSpinButton *widget, gpointer value)
 328 {
 329     param_control *jhp = (param_control *)value;
 330     jhp->get();
 331 }
 332
 333 void spin_param_control::get()
 334 {
 335     // const parameter_properties &props = get_props();
 336     gui->set_param_value(param_no, gtk_spin_button_get_value_as_float (GTK_SPIN_BUTTON (widget)), this);
 337 }
 338
 339 void spin_param_control::set()
 340 {
 341     _GUARD_CHANGE_
 342     // const parameter_properties &props = get_props();
 343     gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), gui->plugin->get_param_value(param_no));
 344 }
 345
 346 // button
 347
 348 GtkWidget *button_param_control::create(plugin_gui *_gui, int _param_no)
 349 {
 350     gui = _gui;
 351     param_no = _param_no;
 352
 353     widget  = gtk_button_new_with_label (get_props().name);
 354     gtk_signal_connect (GTK_OBJECT (widget), "clicked", G_CALLBACK (button_clicked), (gpointer)this);
 355     return widget;
 356 }
 357
 358 void button_param_control::button_clicked(GtkButton *widget, gpointer value)
 359 {
 360     param_control *jhp = (param_control *)value;
 361
 362     jhp->get();
 363 }
 364
 365 void button_param_control::get()
 366 {
 367     const parameter_properties &props = get_props();
 368     gui->set_param_value(param_no, props.max, this);
 369 }
 370
 371 void button_param_control::set()
 372 {
 373     _GUARD_CHANGE_
 374     const parameter_properties &props = get_props();
 375     if (gui->plugin->get_param_value(param_no) - props.min >= 0.5)
 376         gtk_button_clicked (GTK_BUTTON (widget));
 377 }
 378
 379 // knob
 380
 381 GtkWidget *knob_param_control::create(plugin_gui *_gui, int _param_no)
 382 {
 383     gui = _gui;
 384     param_no = _param_no;
 385     const parameter_properties &props = get_props();
 386
 387     //widget = calf_knob_new_with_range (props.to_01 (gui->plugin->get_param_value(param_no)), 0, 1, 0.01);
 388     widget = calf_knob_new();
 389     float increment = props.get_increment();
 390     gtk_range_get_adjustment(GTK_RANGE(widget))->step_increment = increment;
 391     CALF_KNOB(widget)->knob_type = get_int("type");
 392     gtk_signal_connect(GTK_OBJECT(widget), "value-changed", G_CALLBACK(knob_value_changed), (gpointer)this);
 393     return widget;
 394 }
 395
 396 void knob_param_control::get()
 397 {
 398     const parameter_properties &props = get_props();
 399     float value = props.from_01(gtk_range_get_value(GTK_RANGE(widget)));
 400     gui->set_param_value(param_no, value, this);
 401     if (label)
 402         update_label();
 403 }
 404
 405 void knob_param_control::set()
 406 {
 407     _GUARD_CHANGE_
 408     const parameter_properties &props = get_props();
 409     gtk_range_set_value(GTK_RANGE(widget), props.to_01 (gui->plugin->get_param_value(param_no)));
 410     if (label)
 411         update_label();
 412 }
 413
 414 void knob_param_control::knob_value_changed(GtkWidget *widget, gpointer value)
 415 {
 416     param_control *jhp = (param_control *)value;
 417     jhp->get();
 418 }
 419
 420 // keyboard
 421
 422 GtkWidget *keyboard_param_control::create(plugin_gui *_gui, int _param_no)
 423 {
 424     gui = _gui;
 425     param_no = _param_no;
 426     // const parameter_properties &props = get_props();
 427
 428     widget = calf_keyboard_new();
 429     kb = CALF_KEYBOARD(widget);
 430     kb->nkeys = get_int("octaves", 4) * 7 + 1;
 431     kb->sink = new CalfKeyboard::EventAdapter;
 432     return widget;
 433 }
 434
 435 // curve
 436
 437 struct curve_param_control_callback: public CalfCurve::EventAdapter
 438 {
 439     curve_param_control *ctl;
 440
 441     curve_param_control_callback(curve_param_control *_ctl)
 442     : ctl(_ctl) {}
 443
 444     virtual void curve_changed(CalfCurve *src, const CalfCurve::point_vector &data) {
 445         stringstream ss;
 446         ss << data.size() << endl;
 447         for (size_t i = 0; i < data.size(); i++)
 448             ss << data[i].first << " " << data[i].second << endl;
 449         ctl->gui->plugin->configure(ctl->attribs["key"].c_str(), ss.str().c_str());
 450     }
 451     virtual void clip(CalfCurve *src, int pt, float &x, float &y, bool &hide)
 452     {
 453         // int gridpt = floor(x * 71 * 2);
 454         // clip to the middle of the nearest white key
 455         x = (floor(x * 71) + 0.5)/ 71.0;
 456     }
 457 };
 458
 459 GtkWidget *curve_param_control::create(plugin_gui *_gui, int _param_no)
 460 {
 461     gui = _gui;
 462     param_no = _param_no;
 463     require_attribute("key");
 464
 465     widget = calf_curve_new(get_int("maxpoints", -1));
 466     curve = CALF_CURVE(widget);
 467     curve->sink = new curve_param_control_callback(this);
 468     // gtk_curve_set_curve_type(curve, GTK_CURVE_TYPE_LINEAR);
 469     return widget;
 470 }
 471
 472 void curve_param_control::send_configure(const char *key, const char *value)
 473 {
 474     // cout << "send conf " << key << endl;
 475     if (attribs["key"] == key)
 476     {
 477         stringstream ss(value);
 478         CalfCurve::point_vector pts;
 479         if (*value)
 480         {
 481             unsigned int npoints = 0;
 482             ss >> npoints;
 483             unsigned int i;
 484             float x = 0, y = 0;
 485             for (i = 0; i < npoints && i < curve->point_limit; i++)
 486             {
 487                 ss >> x >> y;
 488                 pts.push_back(CalfCurve::point(x, y));
 489             }
 490             calf_curve_set_points(widget, pts);
 491         }
 492     }
 493 }
 494
 495 // line graph
 496
 497 void line_graph_param_control::on_idle()
 498 {
 499     if (get_int("refresh", 0))
 500         set();
 501 }
 502
 503 GtkWidget *line_graph_param_control::create(plugin_gui *_gui, int _param_no)
 504 {
 505     gui = _gui;
 506     param_no = _param_no;
 507     // const parameter_properties &props = get_props();
 508
 509     widget = calf_line_graph_new ();
 510     CalfLineGraph *clg = CALF_LINE_GRAPH(widget);
 511     widget->requisition.width = get_int("width", 40);
 512     widget->requisition.height = get_int("height", 40);
 513     calf_line_graph_set_square(clg, get_int("square", 0));
 514     clg->source = gui->plugin->get_line_graph_iface();
 515     clg->source_id = param_no;
 516
 517     return widget;
 518 }
 519
 520 void line_graph_param_control::set()
 521 {
 522     GtkWidget *tw = gtk_widget_get_toplevel(widget);
 523     if (tw && GTK_WIDGET_TOPLEVEL(tw) && widget->window)
 524     {
 525         int ws = gdk_window_get_state(widget->window);
 526         if (ws & (GDK_WINDOW_STATE_WITHDRAWN | GDK_WINDOW_STATE_ICONIFIED))
 527             return;
 528         gtk_widget_queue_draw(widget);
 529     }
 530 }
 531
 532 line_graph_param_control::~line_graph_param_control()
 533 {
 534 }
 535
 536 /******************************** GUI proper ********************************/
 537
 538 plugin_gui::plugin_gui(plugin_gui_window *_window)
 539 : window(_window)
 540 {
 541
 542 }
 543
 544 static void window_destroyed(GtkWidget *window, gpointer data)
 545 {
 546     delete (plugin_gui_window *)data;
 547 }
 548
 549 static void action_destroy_notify(gpointer data)
 550 {
 551     delete (activate_preset_params *)data;
 552 }
 553
 554 void control_base::require_attribute(const char *name)
 555 {
 556     if (attribs.count(name) == 0) {
 557         g_error("Missing attribute: %s", name);
 558     }
 559 }
 560
 561 void control_base::require_int_attribute(const char *name)
 562 {
 563     if (attribs.count(name) == 0) {
 564         g_error("Missing attribute: %s", name);
 565     }
 566     if (attribs[name].empty() || attribs[name].find_first_not_of("0123456789") != string::npos) {
 567         g_error("Wrong data type on attribute: %s (required integer)", name);
 568     }
 569 }
 570
 571 int control_base::get_int(const char *name, int def_value)
 572 {
 573     if (attribs.count(name) == 0)
 574         return def_value;
 575     const std::string &v = attribs[name];
 576     if (v.empty() || v.find_first_not_of("-+0123456789") != string::npos)
 577         return def_value;
 578     return atoi(v.c_str());
 579 }
 580
 581 float control_base::get_float(const char *name, float def_value)
 582 {
 583     if (attribs.count(name) == 0)
 584         return def_value;
 585     const std::string &v = attribs[name];
 586     if (v.empty() || v.find_first_not_of("-+0123456789.") != string::npos)
 587         return def_value;
 588     stringstream ss(v);
 589     float value;
 590     ss >> value;
 591     return value;
 592 }
 593
 594 /******************************** GtkTable container ********************************/
 595
 596 GtkWidget *table_container::create(plugin_gui *_gui, const char *element, xml_attribute_map &attributes)
 597 {
 598     require_int_attribute("rows");
 599     require_int_attribute("cols");
 600     GtkWidget *table = gtk_table_new(get_int("rows", 1), get_int("cols", 1), false);
 601     container = GTK_CONTAINER(table);
 602     return table;
 603 }
 604
 605 void table_container::add(GtkWidget *widget, control_base *base)
 606 {
 607     base->require_int_attribute("attach-x");
 608     base->require_int_attribute("attach-y");
 609     int x = base->get_int("attach-x"), y = base->get_int("attach-y");
 610     int w = base->get_int("attach-w", 1), h = base->get_int("attach-h", 1);
 611     int shrinkx = base->get_int("shrink-x", 0);
 612     int shrinky = base->get_int("shrink-y", 0);
 613     int fillx = (base->get_int("fill-x", !shrinkx) ? GTK_FILL : 0) | (base->get_int("expand-x", !shrinkx) ? GTK_EXPAND : 0) | (shrinkx ? GTK_SHRINK : 0);
 614     int filly = (base->get_int("fill-y", !shrinky) ? GTK_FILL : 0) | (base->get_int("expand-y", !shrinky) ? GTK_EXPAND : 0) | (base->get_int("shrink-y", 0) ? GTK_SHRINK : 0);
 615     int padx = base->get_int("pad-x", 2);
 616     int pady = base->get_int("pad-y", 2);
 617     gtk_table_attach(GTK_TABLE(container), widget, x, x + w, y, y + h, (GtkAttachOptions)fillx, (GtkAttachOptions)filly, padx, pady);
 618 }
 619
 620 /******************************** alignment contaner ********************************/
 621
 622 GtkWidget *alignment_container::create(plugin_gui *_gui, const char *element, xml_attribute_map &attributes)
 623 {
 624     GtkWidget *align = gtk_alignment_new(get_float("align-x", 0.5), get_float("align-y", 0.5), get_float("scale-x", 0), get_float("scale-y", 0));
 625     container = GTK_CONTAINER(align);
 626     return align;
 627 }
 628
 629 /******************************** GtkFrame contaner ********************************/
 630
 631 GtkWidget *frame_container::create(plugin_gui *_gui, const char *element, xml_attribute_map &attributes)
 632 {
 633     GtkWidget *frame = gtk_frame_new(attribs["label"].c_str());
 634     container = GTK_CONTAINER(frame);
 635     return frame;
 636 }
 637
 638 /******************************** GtkBox type of containers ********************************/
 639
 640 void box_container::add(GtkWidget *w, control_base *base)
 641 {
 642     gtk_container_add_with_properties(container, w, "expand", get_int("expand", 1), "fill", get_int("fill", 1), NULL);
 643 }
 644
 645 /******************************** GtkHBox container ********************************/
 646
 647 GtkWidget *hbox_container::create(plugin_gui *_gui, const char *element, xml_attribute_map &attributes)
 648 {
 649     GtkWidget *hbox = gtk_hbox_new(false, get_int("spacing", 2));
 650     container = GTK_CONTAINER(hbox);
 651     return hbox;
 652 }
 653
 654 /******************************** GtkVBox container ********************************/
 655
 656 GtkWidget *vbox_container::create(plugin_gui *_gui, const char *element, xml_attribute_map &attributes)
 657 {
 658     GtkWidget *vbox = gtk_vbox_new(false, get_int("spacing", 2));
 659     container = GTK_CONTAINER(vbox);
 660     return vbox;
 661 }
 662
 663 /******************************** GtkNotebook container ********************************/
 664
 665 GtkWidget *notebook_container::create(plugin_gui *_gui, const char *element, xml_attribute_map &attributes)
 666 {
 667     GtkWidget *nb = gtk_notebook_new();
 668     container = GTK_CONTAINER(nb);
 669     return nb;
 670 }
 671
 672 void notebook_container::add(GtkWidget *w, control_base *base)
 673 {
 674     gtk_notebook_append_page(GTK_NOTEBOOK(container), w, gtk_label_new_with_mnemonic(base->attribs["page"].c_str()));
 675 }
 676
 677 /******************************** GtkNotebook container ********************************/
 678
 679 GtkWidget *scrolled_container::create(plugin_gui *_gui, const char *element, xml_attribute_map &attributes)
 680 {
 681     GtkAdjustment *horiz = NULL, *vert = NULL;
 682     int width = get_int("width", 0), height = get_int("height", 0);
 683     if (width)
 684         horiz = GTK_ADJUSTMENT(gtk_adjustment_new(get_int("x", 0), 0, width, get_int("step-x", 1), get_int("page-x", width / 10), 100));
 685     if (height)
 686         vert = GTK_ADJUSTMENT(gtk_adjustment_new(get_int("y", 0), 0, width, get_int("step-y", 1), get_int("page-y", height / 10), 10));
 687     GtkWidget *sw = gtk_scrolled_window_new(horiz, vert);
 688     gtk_widget_set_size_request(sw, get_int("req-x", -1), get_int("req-y", -1));
 689     container = GTK_CONTAINER(sw);
 690     return sw;
 691 }
 692
 693 void scrolled_container::add(GtkWidget *w, control_base *base)
 694 {
 695     gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(container), w);
 696 }
 697
 698 /******************************** GUI proper ********************************/
 699
 700 param_control *plugin_gui::create_control_from_xml(const char *element, const char *attributes[])
 701 {
 702     if (!strcmp(element, "knob"))
 703         return new knob_param_control;
 704     if (!strcmp(element, "hscale"))
 705         return new hscale_param_control;
 706     if (!strcmp(element, "vscale"))
 707         return new vscale_param_control;
 708     if (!strcmp(element, "combo"))
 709         return new combo_box_param_control;
 710     if (!strcmp(element, "toggle"))
 711         return new toggle_param_control;
 712     if (!strcmp(element, "spin"))
 713         return new spin_param_control;
 714     if (!strcmp(element, "button"))
 715         return new button_param_control;
 716     if (!strcmp(element, "label"))
 717         return new label_param_control;
 718     if (!strcmp(element, "value"))
 719         return new value_param_control;
 720     if (!strcmp(element, "vumeter"))
 721         return new vumeter_param_control;
 722     if (!strcmp(element, "line-graph"))
 723         return new line_graph_param_control;
 724     if (!strcmp(element, "keyboard"))
 725         return new keyboard_param_control;
 726     if (!strcmp(element, "curve"))
 727         return new curve_param_control;
 728     if (!strcmp(element, "led"))
 729         return new led_param_control;
 730     return NULL;
 731 }
 732
 733 control_container *plugin_gui::create_container_from_xml(const char *element, const char *attributes[])
 734 {
 735     if (!strcmp(element, "table"))
 736         return new table_container;
 737     if (!strcmp(element, "vbox"))
 738         return new vbox_container;
 739     if (!strcmp(element, "hbox"))
 740         return new hbox_container;
 741     if (!strcmp(element, "align"))
 742         return new alignment_container;
 743     if (!strcmp(element, "frame"))
 744         return new frame_container;
 745     if (!strcmp(element, "notebook"))
 746         return new notebook_container;
 747     if (!strcmp(element, "scrolled"))
 748         return new scrolled_container;
 749     return NULL;
 750 }
 751
 752 void plugin_gui::xml_element_start(void *data, const char *element, const char *attributes[])
 753 {
 754     plugin_gui *gui = (plugin_gui *)data;
 755     gui->xml_element_start(element, attributes);
 756 }
 757
 758 void plugin_gui::xml_element_start(const char *element, const char *attributes[])
 759 {
 760     if (ignore_stack) {
 761         ignore_stack++;
 762         return;
 763     }
 764     control_base::xml_attribute_map xam;
 765     while(*attributes)
 766     {
 767         xam[attributes[0]] = attributes[1];
 768         attributes += 2;
 769     }
 770
 771     if (!strcmp(element, "if"))
 772     {
 773         if (!xam.count("cond") || xam["cond"].empty())
 774         {
 775             g_error("Incorrect <if cond=\"[!]symbol\"> element");
 776         }
 777         string cond = xam["cond"];
 778         bool state = true;
 779         if (cond.substr(0, 1) == "!") {
 780             state = false;
 781             cond.erase(0, 1);
 782         }
 783         if (window->main->check_condition(cond.c_str()) == state)
 784             return;
 785         ignore_stack = 1;
 786         return;
 787     }
 788     control_container *cc = create_container_from_xml(element, attributes);
 789     if (cc != NULL)
 790     {
 791         cc->attribs = xam;
 792         cc->create(this, element, xam);
 793         gtk_container_set_border_width(cc->container, cc->get_int("border"));
 794
 795         container_stack.push_back(cc);
 796         current_control = NULL;
 797         return;
 798     }
 799     if (!container_stack.empty())
 800     {
 801         current_control = create_control_from_xml(element, attributes);
 802         if (current_control)
 803         {
 804             current_control->attribs = xam;
 805             int param_no = -1;
 806             if (xam.count("param"))
 807             {
 808                 map<string, int>::iterator it = param_name_map.find(xam["param"]);
 809                 if (it == param_name_map.end())
 810                     g_error("Unknown parameter %s", xam["param"].c_str());
 811                 else
 812                     param_no = it->second;
 813             }
 814             current_control->create(this, param_no);
 815             current_control->init_xml(element);
 816             current_control->set();
 817             current_control->hook_params();
 818             return;
 819         }
 820     }
 821     g_error("Unxpected element %s in GUI definition\n", element);
 822 }
 823
 824 void plugin_gui::xml_element_end(void *data, const char *element)
 825 {
 826     plugin_gui *gui = (plugin_gui *)data;
 827     if (gui->ignore_stack) {
 828         gui->ignore_stack--;
 829         return;
 830     }
 831     if (!strcmp(element, "if"))
 832     {
 833         return;
 834     }
 835     if (gui->current_control)
 836     {
 837         (*gui->container_stack.rbegin())->add(gui->current_control->widget, gui->current_control);
 838         gui->current_control = NULL;
 839         return;
 840     }
 841     unsigned int ss = gui->container_stack.size();
 842     if (ss > 1) {
 843         gui->container_stack[ss - 2]->add(GTK_WIDGET(gui->container_stack[ss - 1]->container), gui->container_stack[ss - 1]);
 844     }
 845     else
 846         gui->top_container = gui->container_stack[0];
 847     gui->container_stack.pop_back();
 848 }
 849
 850
 851 GtkWidget *plugin_gui::create_from_xml(plugin_ctl_iface *_plugin, const char *xml)
 852 {
 853     current_control = NULL;
 854     top_container = NULL;
 855     parser = XML_ParserCreate("UTF-8");
 856     plugin = _plugin;
 857     container_stack.clear();
 858     ignore_stack = 0;
 859
 860     param_name_map.clear();
 861     int size = plugin->get_param_count();
 862     for (int i = 0; i < size; i++)
 863         param_name_map[plugin->get_param_props(i)->short_name] = i;
 864
 865     XML_SetUserData(parser, this);
 866     XML_SetElementHandler(parser, xml_element_start, xml_element_end);
 867     XML_Status status = XML_Parse(parser, xml, strlen(xml), 1);
 868     if (status == XML_STATUS_ERROR)
 869     {
 870         g_error("Parse error: %s in XML", XML_ErrorString(XML_GetErrorCode(parser)));
 871     }
 872
 873     XML_ParserFree(parser);
 874     return GTK_WIDGET(top_container->container);
 875 }
 876
 877 void plugin_gui::send_configure(const char *key, const char *value)
 878 {
 879     // XXXKF this should really be replaced by a separate list of SCI-capable param controls
 880     for (unsigned int i = 0; i < params.size(); i++)
 881     {
 882         assert(params[i] != NULL);
 883         send_configure_iface *sci = dynamic_cast<send_configure_iface *>(params[i]);
 884         if (sci)
 885             sci->send_configure(key, value);
 886     }
 887 }
 888
 889 void plugin_gui::on_idle()
 890 {
 891     for (unsigned int i = 0; i < params.size(); i++)
 892     {
 893         parameter_properties &props = *plugin->get_param_props(params[i]->param_no);
 894         bool is_output = (props.flags & PF_PROP_OUTPUT) != 0;
 895         if (is_output) {
 896             params[i]->set();
 897         }
 898         params[i]->on_idle();
 899     }
 900     // XXXKF iterate over par2ctl, too...
 901 }
 902
 903 void plugin_gui::refresh()
 904 {
 905     for (unsigned int i = 0; i < params.size(); i++)
 906     {
 907         params[i]->set();
 908         send_configure_iface *sci = dynamic_cast<send_configure_iface *>(params[i]);
 909         if (sci)
 910             plugin->send_configures(sci);
 911     }
 912 }
 913
 914 void plugin_gui::refresh(int param_no, param_control *originator)
 915 {
 916     std::multimap<int, param_control *>::iterator it = par2ctl.find(param_no);
 917     while(it != par2ctl.end() && it->first == param_no)
 918     {
 919         if (it->second != originator)
 920             it->second->set();
 921         it++;
 922     }
 923 }
 924
 925 void plugin_gui::set_param_value(int param_no, float value, param_control *originator)
 926 {
 927     plugin->set_param_value(param_no, value);
 928     refresh(param_no);
 929 }
 930
 931 plugin_gui::~plugin_gui()
 932 {
 933     for (std::vector<param_control *>::iterator i = params.begin(); i != params.end(); i++)
 934     {
 935         delete *i;
 936     }
 937 }
 938
 939
 940 /******************************* Actions **************************************************/
 941
 942 static void store_preset_action(GtkAction *action, plugin_gui_window *gui_win)
 943 {
 944     store_preset(GTK_WINDOW(gui_win->toplevel), gui_win->gui);
 945 }
 946
 947 static const GtkActionEntry actions[] = {
 948     { "PresetMenuAction", "", "_Preset", NULL, "Preset operations", NULL },
 949     { "BuiltinPresetMenuAction", "", "_Built-in", NULL, "Built-in (factory) presets", NULL },
 950     { "UserPresetMenuAction", "", "_User", NULL, "User (your) presets", NULL },
 951     { "CommandMenuAction", "", "_Command", NULL, "Plugin-related commands", NULL },
 952     { "store-preset", "", "Store preset", NULL, "Store a current setting as preset", (GCallback)store_preset_action },
 953 };
 954
 955 /***************************** GUI window ********************************************/
 956
 957 static const char *ui_xml =
 958 "<ui>\n"
 959 "  <menubar>\n"
 960 "    <menu action=\"PresetMenuAction\">\n"
 961 "      <menuitem action=\"store-preset\"/>\n"
 962 "      <separator/>\n"
 963 "      <placeholder name=\"builtin_presets\"/>\n"
 964 "      <separator/>\n"
 965 "      <placeholder name=\"user_presets\"/>\n"
 966 "    </menu>\n"
 967 "    <placeholder name=\"commands\"/>\n"
 968 "  </menubar>\n"
 969 "</ui>\n"
 970 ;
 971
 972 static const char *general_preset_pre_xml =
 973 "<ui>\n"
 974 "  <menubar>\n"
 975 "    <menu action=\"PresetMenuAction\">\n";
 976
 977 static const char *builtin_preset_pre_xml =
 978 // "      <menu action=\"BuiltinPresetMenuAction\">\n"
 979 "        <placeholder name=\"builtin_presets\">\n";
 980
 981 static const char *user_preset_pre_xml =
 982 // "      <menu action=\"UserPresetMenuAction\">\n"
 983 "        <placeholder name=\"user_presets\">\n";
 984
 985 static const char *preset_post_xml =
 986 "        </placeholder>\n"
 987 // "      </menu>\n"
 988 "    </menu>\n"
 989 "  </menubar>\n"
 990 "</ui>\n"
 991 ;
 992
 993 static const char *command_pre_xml =
 994 "<ui>\n"
 995 "  <menubar>\n"
 996 "    <placeholder name=\"commands\">\n"
 997 "      <menu action=\"CommandMenuAction\">\n";
 998
 999 static const char *command_post_xml =
1000 "      </menu>\n"
1001 "    </placeholder>\n"
1002 "  </menubar>\n"
1003 "</ui>\n"
1004 ;
1005
1006 plugin_gui_window::plugin_gui_window(main_window_iface *_main)
1007 {
1008     toplevel = NULL;
1009     ui_mgr = NULL;
1010     std_actions = NULL;
1011     builtin_preset_actions = NULL;
1012     user_preset_actions = NULL;
1013     command_actions = NULL;
1014     main = _main;
1015     assert(main);
1016 }
1017
1018 string plugin_gui_window::make_gui_preset_list(GtkActionGroup *grp, bool builtin, char &ch)
1019 {
1020     string preset_xml = string(general_preset_pre_xml) + (builtin ? builtin_preset_pre_xml : user_preset_pre_xml);
1021     preset_vector &pvec = (builtin ? get_builtin_presets() : get_user_presets()).presets;
1022     GtkActionGroup *preset_actions = builtin ? builtin_preset_actions : user_preset_actions;
1023     for (unsigned int i = 0; i < pvec.size(); i++)
1024     {
1025         if (pvec[i].plugin != gui->effect_name)
1026             continue;
1027         stringstream ss;
1028         ss << (builtin ? "builtin_preset" : "user_preset") << i;
1029         preset_xml += "          <menuitem name=\"" + pvec[i].name+"\" action=\""+ss.str()+"\"/>\n";
1030         if (ch != ' ' && ++ch == ':')
1031             ch = 'A';
1032         if (ch > 'Z')
1033             ch = ' ';
1034
1035         string sv = ss.str();
1036         string prefix = ch == ' ' ? string() : string("_")+ch+" ";
1037         string name = prefix + pvec[i].name;
1038         GtkActionEntry ae = { sv.c_str(), NULL, name.c_str(), NULL, NULL, (GCallback)activate_preset };
1039         gtk_action_group_add_actions_full(preset_actions, &ae, 1, (gpointer)new activate_preset_params(gui, i, builtin), action_destroy_notify);
1040     }
1041     preset_xml += preset_post_xml;
1042     return preset_xml;
1043 }
1044
1045 string plugin_gui_window::make_gui_command_list(GtkActionGroup *grp)
1046 {
1047     string command_xml = command_pre_xml;
1048     plugin_command_info *ci = gui->plugin->get_commands();
1049     if (!ci)
1050         return "";
1051     for(int i = 0; ci->name; i++, ci++)
1052     {
1053         stringstream ss;
1054         ss << "          <menuitem name=\"" << ci->name << "\" action=\"" << ci->label << "\"/>\n";
1055
1056         GtkActionEntry ae = { ci->label, NULL, ci->name, NULL, ci->description, (GCallback)activate_command };
1057         gtk_action_group_add_actions_full(command_actions, &ae, 1, (gpointer)new activate_command_params(gui, i), action_destroy_notify);
1058         command_xml += ss.str();
1059     }
1060     command_xml += command_post_xml;
1061     return command_xml;
1062 }
1063
1064 void plugin_gui_window::fill_gui_presets(bool builtin, char &ch)
1065 {
1066     GtkActionGroup *&preset_actions = builtin ? builtin_preset_actions : user_preset_actions;
1067     if(preset_actions) {
1068         gtk_ui_manager_remove_action_group(ui_mgr, preset_actions);
1069         preset_actions = NULL;
1070     }
1071
1072     if (builtin)
1073         builtin_preset_actions = gtk_action_group_new("builtin_presets");
1074     else
1075         user_preset_actions = gtk_action_group_new("user_presets");
1076     string preset_xml = make_gui_preset_list(preset_actions, builtin, ch);
1077     gtk_ui_manager_insert_action_group(ui_mgr, preset_actions, 0);
1078     GError *error = NULL;
1079     gtk_ui_manager_add_ui_from_string(ui_mgr, preset_xml.c_str(), -1, &error);
1080 }
1081
1082 gboolean plugin_gui_window::on_idle(void *data)
1083 {
1084     plugin_gui_window *self = (plugin_gui_window *)data;
1085     self->gui->on_idle();
1086     return TRUE;
1087 }
1088
1089 void plugin_gui_window::create(plugin_ctl_iface *_jh, const char *title, const char *effect)
1090 {
1091     toplevel = GTK_WINDOW(gtk_window_new (GTK_WINDOW_TOPLEVEL));
1092     gtk_window_set_default_icon_name("calf");
1093     gtk_window_set_type_hint(toplevel, GDK_WINDOW_TYPE_HINT_DIALOG);
1094     GtkVBox *vbox = GTK_VBOX(gtk_vbox_new(false, 5));
1095
1096     GtkRequisition req, req2;
1097     gtk_window_set_title(GTK_WINDOW (toplevel), title);
1098     gtk_container_add(GTK_CONTAINER(toplevel), GTK_WIDGET(vbox));
1099
1100     gui = new plugin_gui(this);
1101     gui->effect_name = effect;
1102
1103     ui_mgr = gtk_ui_manager_new();
1104     std_actions = gtk_action_group_new("default");
1105     gtk_action_group_add_actions(std_actions, actions, sizeof(actions)/sizeof(actions[0]), this);
1106     GError *error = NULL;
1107     gtk_ui_manager_insert_action_group(ui_mgr, std_actions, 0);
1108     gtk_ui_manager_add_ui_from_string(ui_mgr, ui_xml, -1, &error);
1109
1110     command_actions = gtk_action_group_new("commands");
1111
1112     char ch = '0';
1113     fill_gui_presets(true, ch);
1114     fill_gui_presets(false, ch);
1115
1116     gtk_box_pack_start(GTK_BOX(vbox), gtk_ui_manager_get_widget(ui_mgr, "/ui/menubar"), false, false, 0);
1117
1118     // determine size without content
1119     gtk_widget_show_all(GTK_WIDGET(vbox));
1120     gtk_widget_size_request(GTK_WIDGET(vbox), &req2);
1121     // printf("size request %dx%d\n", req2.width, req2.height);
1122
1123     GtkWidget *container;
1124     const char *xml = _jh->get_gui_xml();
1125     assert(xml);
1126     container = gui->create_from_xml(_jh, xml);
1127
1128     string command_xml = make_gui_command_list(command_actions);
1129     gtk_ui_manager_insert_action_group(ui_mgr, command_actions, 0);
1130     gtk_ui_manager_add_ui_from_string(ui_mgr, command_xml.c_str(), -1, &error);
1131
1132     GtkWidget *sw = gtk_scrolled_window_new(NULL, NULL);
1133     gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
1134     gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(sw), GTK_SHADOW_NONE);
1135     gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw), container);
1136
1137     gtk_box_pack_start(GTK_BOX(vbox), sw, true, true, 0);
1138
1139     gtk_widget_show_all(GTK_WIDGET(sw));
1140     gtk_widget_size_request(container, &req);
1141     int wx = max(req.width + 10, req2.width);
1142     int wy = req.height + req2.height + 10;
1143     // printf("size request %dx%d\n", req.width, req.height);
1144     // printf("resize to %dx%d\n", max(req.width + 10, req2.width), req.height + req2.height + 10);
1145     gtk_window_set_default_size(GTK_WINDOW(toplevel), wx, wy);
1146     gtk_window_resize(GTK_WINDOW(toplevel), wx, wy);
1147     //gtk_widget_set_size_request(GTK_WIDGET(toplevel), max(req.width + 10, req2.width), req.height + req2.height + 10);
1148     // printf("size set %dx%d\n", wx, wy);
1149     // gtk_scrolled_window_set_vadjustment(GTK_SCROLLED_WINDOW(sw), GTK_ADJUSTMENT(gtk_adjustment_new(0, 0, req.height, 20, 100, 100)));
1150     gtk_signal_connect (GTK_OBJECT (toplevel), "destroy", G_CALLBACK (window_destroyed), (plugin_gui_window *)this);
1151     main->set_window(gui->plugin, this);
1152
1153     source_id = g_timeout_add_full(G_PRIORITY_LOW, 1000/30, on_idle, this, NULL); // 30 fps should be enough for everybody
1154     gtk_ui_manager_ensure_update(ui_mgr);
1155     gui->plugin->send_configures(gui);
1156 }
1157
1158 void plugin_gui_window::close()
1159 {
1160     if (source_id)
1161         g_source_remove(source_id);
1162     source_id = 0;
1163     gtk_widget_destroy(GTK_WIDGET(toplevel));
1164 }
1165
1166 plugin_gui_window::~plugin_gui_window()
1167 {
1168     if (source_id)
1169         g_source_remove(source_id);
1170     main->set_window(gui->plugin, NULL);
1171     delete gui;
1172 }
1173
1174 void calf_plugins::activate_command(GtkAction *action, activate_command_params *params)
1175 {
1176     plugin_gui *gui = params->gui;
1177     gui->plugin->execute(params->function_idx);
1178     gui->refresh();
1179 }
1180
1181