gtk2_ardour/keyboard.cc

   1 /*
   2     Copyright (C) 2001 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <vector>
  21 #include <ardour/ardour.h>
  22
  23 #include "ardour_ui.h"
  24
  25 #include <algorithm>
  26 #include <fstream>
  27 #include <iostream>
  28
  29 #include <ctype.h>
  30
  31 #include <gtkmm/accelmap.h>
  32
  33 #include <gdk/gdkkeysyms.h>
  34 #include <pbd/error.h>
  35
  36 #include "keyboard.h"
  37 #include "gui_thread.h"
  38 #include "opts.h"
  39 #include "actions.h"
  40
  41 #include "i18n.h"
  42
  43 using namespace PBD;
  44 using namespace ARDOUR;
  45 using namespace Gtk;
  46 using namespace std;
  47
  48 #define KBD_DEBUG 0
  49 bool debug_keyboard = false;
  50
  51 guint Keyboard::edit_but = 3;
  52 guint Keyboard::edit_mod = GDK_CONTROL_MASK;
  53 guint Keyboard::delete_but = 3;
  54 guint Keyboard::delete_mod = GDK_SHIFT_MASK;
  55 guint Keyboard::snap_mod = GDK_MOD3_MASK;
  56
  57 #ifdef GTKOSX
  58 guint Keyboard::PrimaryModifier = GDK_META_MASK;   // Command
  59 guint Keyboard::SecondaryModifier = GDK_MOD1_MASK; // Alt/Option
  60 guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK; // Shift
  61 guint Keyboard::Level4Modifier = GDK_CONTROL_MASK; // Control
  62 guint Keyboard::CopyModifier = GDK_MOD1_MASK;      // Alt/Option
  63 guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
  64 guint Keyboard::button2_modifiers = Keyboard::SecondaryModifier|Keyboard::Level4Modifier;
  65 #else
  66 guint Keyboard::PrimaryModifier = GDK_CONTROL_MASK; // Control
  67 guint Keyboard::SecondaryModifier = GDK_MOD1_MASK;  // Alt/Option
  68 guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK;  // Shift
  69 guint Keyboard::Level4Modifier = GDK_MOD4_MASK;     // Mod4/Windows
  70 guint Keyboard::CopyModifier = GDK_CONTROL_MASK;
  71 guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
  72 guint Keyboard::button2_modifiers = 0; /* not used */
  73 #endif
  74
  75
  76 Keyboard*    Keyboard::_the_keyboard = 0;
  77 Gtk::Window* Keyboard::current_window = 0;
  78 bool         Keyboard::_some_magic_widget_has_focus = false;
  79
  80 std::string Keyboard::user_keybindings_path;
  81 bool Keyboard::can_save_keybindings = false;
  82 bool Keyboard::bindings_changed_after_save_became_legal = false;
  83 map<string,string> Keyboard::binding_files;
  84 string Keyboard::_current_binding_name = _("Unknown");
  85 map<AccelKey,pair<string,string>,Keyboard::AccelKeyLess> Keyboard::release_keys;
  86
  87 /* set this to initially contain the modifiers we care about, then track changes in ::set_edit_modifier() etc. */
  88
  89 GdkModifierType Keyboard::RelevantModifierKeyMask;
  90
  91 void
  92 Keyboard::magic_widget_grab_focus ()
  93 {
  94         _some_magic_widget_has_focus = true;
  95 }
  96
  97 void
  98 Keyboard::magic_widget_drop_focus ()
  99 {
 100         _some_magic_widget_has_focus = false;
 101 }
 102
 103 bool
 104 Keyboard::some_magic_widget_has_focus ()
 105 {
 106         return _some_magic_widget_has_focus;
 107 }
 108
 109 Keyboard::Keyboard ()
 110 {
 111         if (_the_keyboard == 0) {
 112                 _the_keyboard = this;
 113         }
 114
 115         RelevantModifierKeyMask = (GdkModifierType) gtk_accelerator_get_default_mod_mask ();
 116
 117         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | PrimaryModifier);
 118         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | SecondaryModifier);
 119         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | TertiaryModifier);
 120         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | Level4Modifier);
 121         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | CopyModifier);
 122         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | RangeSelectModifier);
 123
 124         gtk_accelerator_set_default_mod_mask (RelevantModifierKeyMask);
 125
 126         snooper_id = gtk_key_snooper_install (_snooper, (gpointer) this);
 127
 128         XMLNode* node = ARDOUR_UI::instance()->keyboard_settings();
 129         set_state (*node);
 130 }
 131
 132 Keyboard::~Keyboard ()
 133 {
 134         gtk_key_snooper_remove (snooper_id);
 135 }
 136
 137 XMLNode&
 138 Keyboard::get_state (void)
 139 {
 140         XMLNode* node = new XMLNode ("Keyboard");
 141         char buf[32];
 142
 143         snprintf (buf, sizeof (buf), "%d", edit_but);
 144         node->add_property ("edit-button", buf);
 145         snprintf (buf, sizeof (buf), "%d", edit_mod);
 146         node->add_property ("edit-modifier", buf);
 147         snprintf (buf, sizeof (buf), "%d", delete_but);
 148         node->add_property ("delete-button", buf);
 149         snprintf (buf, sizeof (buf), "%d", delete_mod);
 150         node->add_property ("delete-modifier", buf);
 151         snprintf (buf, sizeof (buf), "%d", snap_mod);
 152         node->add_property ("snap-modifier", buf);
 153
 154         return *node;
 155 }
 156
 157 int
 158 Keyboard::set_state (const XMLNode& node)
 159 {
 160         const XMLProperty* prop;
 161
 162         if ((prop = node.property ("edit-button")) != 0) {
 163                 sscanf (prop->value().c_str(), "%d", &edit_but);
 164         }
 165
 166         if ((prop = node.property ("edit-modifier")) != 0) {
 167                 sscanf (prop->value().c_str(), "%d", &edit_mod);
 168         }
 169
 170         if ((prop = node.property ("delete-button")) != 0) {
 171                 sscanf (prop->value().c_str(), "%d", &delete_but);
 172         }
 173
 174         if ((prop = node.property ("delete-modifier")) != 0) {
 175                 sscanf (prop->value().c_str(), "%d", &delete_mod);
 176         }
 177
 178         if ((prop = node.property ("snap-modifier")) != 0) {
 179                 sscanf (prop->value().c_str(), "%d", &snap_mod);
 180         }
 181
 182         return 0;
 183 }
 184
 185 gint
 186 Keyboard::_snooper (GtkWidget *widget, GdkEventKey *event, gpointer data)
 187 {
 188         return ((Keyboard *) data)->snooper (widget, event);
 189 }
 190
 191 gint
 192 Keyboard::snooper (GtkWidget *widget, GdkEventKey *event)
 193 {
 194         uint32_t keyval;
 195         bool ret = false;
 196
 197 #if 0
 198         cerr << "snoop widget " << widget << " key " << event->keyval << " type: " << event->type
 199              << " state " << std::hex << event->state << std::dec
 200              << endl;
 201 #endif
 202
 203 #if KBD_DEBUG
 204         if (debug_keyboard) {
 205                 cerr << "snoop widget " << widget << " key " << event->keyval << " type: " << event->type
 206                      << endl;
 207         }
 208 #endif
 209
 210         if (event->keyval == GDK_Shift_R) {
 211                 keyval = GDK_Shift_L;
 212
 213         } else  if (event->keyval == GDK_Control_R) {
 214                 keyval = GDK_Control_L;
 215
 216         } else {
 217                 keyval = event->keyval;
 218         }
 219
 220         if (event->type == GDK_KEY_PRESS) {
 221
 222                 if (find (state.begin(), state.end(), keyval) == state.end()) {
 223                         state.push_back (keyval);
 224                         sort (state.begin(), state.end());
 225
 226                 } else {
 227
 228                         /* key is already down. if its also used for release,
 229                            prevent auto-repeat events.
 230                         */
 231
 232                         for (map<AccelKey,two_strings,AccelKeyLess>::iterator k = release_keys.begin(); k != release_keys.end(); ++k) {
 233
 234                                 const AccelKey& ak (k->first);
 235
 236                                 if (keyval == ak.get_key() && (Gdk::ModifierType)(event->state | Gdk::RELEASE_MASK) == ak.get_mod()) {
 237                                         ret = true;
 238                                         break;
 239                                 }
 240                         }
 241                 }
 242
 243         } else if (event->type == GDK_KEY_RELEASE) {
 244
 245                 State::iterator i;
 246
 247                 if ((i = find (state.begin(), state.end(), keyval)) != state.end()) {
 248                         state.erase (i);
 249                         sort (state.begin(), state.end());
 250                 }
 251
 252                 for (map<AccelKey,two_strings,AccelKeyLess>::iterator k = release_keys.begin(); k != release_keys.end(); ++k) {
 253
 254                         const AccelKey& ak (k->first);
 255                         two_strings ts (k->second);
 256
 257                         if (keyval == ak.get_key() && (Gdk::ModifierType)(event->state | Gdk::RELEASE_MASK) == ak.get_mod()) {
 258                                 Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (ts.first.c_str(), ts.second.c_str());
 259                                 if (act) {
 260                                         act->activate();
 261                                         ret = true;
 262                                 }
 263                                 break;
 264                         }
 265                 }
 266         }
 267
 268         /* Special keys that we want to handle in
 269            any dialog, no matter whether it uses
 270            the regular set of accelerators or not
 271         */
 272
 273         if (event->type == GDK_KEY_RELEASE && modifier_state_equals (event->state, PrimaryModifier)) {
 274                 switch (event->keyval) {
 275                 case GDK_w:
 276                         if (current_window) {
 277                                 current_window->hide ();
 278                                 current_window = 0;
 279                                 ret = true;
 280                         }
 281                         break;
 282                 }
 283         }
 284
 285         return ret;
 286 }
 287
 288 bool
 289 Keyboard::key_is_down (uint32_t keyval)
 290 {
 291         return find (state.begin(), state.end(), keyval) != state.end();
 292 }
 293
 294 bool
 295 Keyboard::enter_window (GdkEventCrossing *ev, Gtk::Window* win)
 296 {
 297         current_window = win;
 298         return false;
 299 }
 300
 301 bool
 302 Keyboard::leave_window (GdkEventCrossing *ev, Gtk::Window* win)
 303 {
 304         if (ev) {
 305                 switch (ev->detail) {
 306                 case GDK_NOTIFY_INFERIOR:
 307                         if (debug_keyboard) {
 308                                 cerr << "INFERIOR crossing ... out\n";
 309                         }
 310                         break;
 311
 312                 case GDK_NOTIFY_VIRTUAL:
 313                         if (debug_keyboard) {
 314                                 cerr << "VIRTUAL crossing ... out\n";
 315                         }
 316                         /* fallthru */
 317
 318                 default:
 319                         if (debug_keyboard) {
 320                                 cerr << "REAL CROSSING ... out\n";
 321                                 cerr << "clearing current target\n";
 322                         }
 323                         state.clear ();
 324                         current_window = 0;
 325                 }
 326         } else {
 327                 current_window = 0;
 328         }
 329
 330         return false;
 331 }
 332
 333 void
 334 Keyboard::set_edit_button (guint but)
 335 {
 336         edit_but = but;
 337 }
 338
 339 void
 340 Keyboard::set_edit_modifier (guint mod)
 341 {
 342         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~edit_mod);
 343         edit_mod = mod;
 344         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | edit_mod);
 345 }
 346
 347 void
 348 Keyboard::set_delete_button (guint but)
 349 {
 350         delete_but = but;
 351 }
 352
 353 void
 354 Keyboard::set_delete_modifier (guint mod)
 355 {
 356         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~delete_mod);
 357         delete_mod = mod;
 358         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | delete_mod);
 359 }
 360
 361 void
 362 Keyboard::set_modifier (uint32_t newval, uint32_t& var)
 363 {
 364         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~var);
 365         var = newval;
 366         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | var);
 367 }
 368
 369 void
 370 Keyboard::set_snap_modifier (guint mod)
 371 {
 372         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~snap_mod);
 373         snap_mod = mod;
 374         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | snap_mod);
 375 }
 376
 377 bool
 378 Keyboard::is_edit_event (GdkEventButton *ev)
 379 {
 380         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
 381                 (ev->button == Keyboard::edit_button()) &&
 382                 ((ev->state & RelevantModifierKeyMask) == Keyboard::edit_modifier());
 383 }
 384
 385 bool
 386 Keyboard::is_button2_event (GdkEventButton* ev)
 387 {
 388 #ifdef GTKOSX
 389         return (ev->button == 2) ||
 390                 ((ev->button == 1) &&
 391                  ((ev->state & Keyboard::button2_modifiers) == Keyboard::button2_modifiers));
 392 #else
 393         return ev->button == 2;
 394 #endif
 395 }
 396
 397 bool
 398 Keyboard::is_delete_event (GdkEventButton *ev)
 399 {
 400         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
 401                 (ev->button == Keyboard::delete_button()) &&
 402                 ((ev->state & RelevantModifierKeyMask) == Keyboard::delete_modifier());
 403 }
 404
 405 bool
 406 Keyboard::is_context_menu_event (GdkEventButton *ev)
 407 {
 408         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
 409                 (ev->button == 3) &&
 410                 ((ev->state & RelevantModifierKeyMask) == 0);
 411 }
 412
 413 bool
 414 Keyboard::no_modifiers_active (guint state)
 415 {
 416         return (state & RelevantModifierKeyMask) == 0;
 417 }
 418
 419 bool
 420 Keyboard::modifier_state_contains (guint state, ModifierMask mask)
 421 {
 422         return (state & mask) == (guint) mask;
 423 }
 424
 425 bool
 426 Keyboard::modifier_state_equals (guint state, ModifierMask mask)
 427 {
 428         return (state & RelevantModifierKeyMask) == (guint) mask;
 429 }
 430
 431 Selection::Operation
 432 Keyboard::selection_type (guint state)
 433 {
 434         /* note that there is no modifier for "Add" */
 435
 436         if (modifier_state_equals (state, RangeSelectModifier)) {
 437                 return Selection::Extend;
 438         } else if (modifier_state_equals (state, PrimaryModifier)) {
 439                 return Selection::Toggle;
 440         } else {
 441                 return Selection::Set;
 442         }
 443 }
 444
 445
 446 static void
 447 accel_map_changed (GtkAccelMap* map,
 448                    gchar* path,
 449                    guint  key,
 450                    GdkModifierType mod,
 451                    gpointer arg)
 452 {
 453         Keyboard::keybindings_changed ();
 454 }
 455
 456 void
 457 Keyboard::keybindings_changed ()
 458 {
 459         if (Keyboard::can_save_keybindings) {
 460                 Keyboard::bindings_changed_after_save_became_legal = true;
 461         }
 462
 463         Keyboard::save_keybindings ();
 464 }
 465
 466 void
 467 Keyboard::set_can_save_keybindings (bool yn)
 468 {
 469         can_save_keybindings = yn;
 470 }
 471
 472 void
 473 Keyboard::save_keybindings ()
 474 {
 475         if (can_save_keybindings && bindings_changed_after_save_became_legal) {
 476                 Gtk::AccelMap::save (user_keybindings_path);
 477         }
 478 }
 479
 480 void
 481 Keyboard::setup_keybindings ()
 482 {
 483         using namespace ARDOUR_COMMAND_LINE;
 484         std::string default_bindings = "mnemonic-us.bindings";
 485         std::string path;
 486         vector<string> strs;
 487
 488         binding_files.clear ();
 489
 490         ARDOUR::find_bindings_files (binding_files);
 491
 492         /* set up the per-user bindings path */
 493
 494         strs.push_back (Glib::get_home_dir());
 495         strs.push_back (".ardour2");
 496         strs.push_back ("ardour.bindings");
 497
 498         user_keybindings_path = Glib::build_filename (strs);
 499
 500         if (Glib::file_test (user_keybindings_path, Glib::FILE_TEST_EXISTS)) {
 501                 std::pair<string,string> newpair;
 502                 newpair.first = _("your own");
 503                 newpair.second = user_keybindings_path;
 504                 binding_files.insert (newpair);
 505         }
 506
 507         /* check to see if they gave a style name ("SAE", "ergonomic") or
 508            an actual filename (*.bindings)
 509         */
 510
 511         if (!keybindings_path.empty() && keybindings_path.find (".bindings") == string::npos) {
 512
 513                 // just a style name - allow user to
 514                 // specify the layout type.
 515
 516                 char* layout;
 517
 518                 if ((layout = getenv ("ARDOUR_KEYBOARD_LAYOUT")) != 0 && layout[0] != '\0') {
 519
 520                         /* user-specified keyboard layout */
 521
 522                         keybindings_path += '-';
 523                         keybindings_path += layout;
 524
 525                 } else {
 526
 527                         /* default to US/ANSI - we have to pick something */
 528
 529                         keybindings_path += "-us";
 530                 }
 531
 532                 keybindings_path += ".bindings";
 533         }
 534
 535         if (keybindings_path.empty()) {
 536
 537                 /* no path or binding name given: check the user one first */
 538
 539                 if (!Glib::file_test (user_keybindings_path, Glib::FILE_TEST_EXISTS)) {
 540
 541                         keybindings_path = "";
 542
 543                 } else {
 544
 545                         keybindings_path = user_keybindings_path;
 546                 }
 547         }
 548
 549         /* if we still don't have a path at this point, use the default */
 550
 551         if (keybindings_path.empty()) {
 552                 keybindings_path = default_bindings;
 553         }
 554
 555         while (true) {
 556
 557                 if (!Glib::path_is_absolute (keybindings_path)) {
 558
 559                         /* not absolute - look in the usual places */
 560
 561                         path = find_config_file (keybindings_path);
 562
 563                         if (path.empty()) {
 564
 565                                 if (keybindings_path == default_bindings) {
 566                                         error << _("Default keybindings not found - Ardour will be hard to use!") << endmsg;
 567                                         return;
 568                                 } else {
 569                                         warning << string_compose (_("Key bindings file \"%1\" not found. Default bindings used instead"),
 570                                                                    keybindings_path)
 571                                                 << endmsg;
 572                                         keybindings_path = default_bindings;
 573                                 }
 574
 575                         } else {
 576
 577                                 /* use it */
 578
 579                                 keybindings_path = path;
 580                                 break;
 581
 582                         }
 583
 584                 } else {
 585
 586                         /* path is absolute already */
 587
 588                         if (!Glib::file_test (keybindings_path, Glib::FILE_TEST_EXISTS)) {
 589                                 if (keybindings_path == default_bindings) {
 590                                         error << _("Default keybindings not found - Ardour will be hard to use!") << endmsg;
 591                                         return;
 592                                 } else {
 593                                         warning << string_compose (_("Key bindings file \"%1\" not found. Default bindings used instead"),
 594                                                                    keybindings_path)
 595                                                 << endmsg;
 596                                         keybindings_path = default_bindings;
 597                                 }
 598
 599                         } else {
 600                                 break;
 601                         }
 602                 }
 603         }
 604
 605         load_keybindings (keybindings_path);
 606
 607         /* catch changes */
 608
 609         GtkAccelMap* accelmap = gtk_accel_map_get();
 610         g_signal_connect (accelmap, "changed", (GCallback) accel_map_changed, 0);
 611 }
 612
 613 bool
 614 Keyboard::load_keybindings (string path)
 615 {
 616         try {
 617                 cerr << "loading bindings from " << path << endl;
 618
 619                 Gtk::AccelMap::load (path);
 620
 621                 _current_binding_name = _("Unknown");
 622
 623                 for (map<string,string>::iterator x = binding_files.begin(); x != binding_files.end(); ++x) {
 624                         if (path == x->second) {
 625                                 _current_binding_name = x->first;
 626                                 break;
 627                         }
 628                 }
 629
 630
 631         } catch (...) {
 632                 error << string_compose (_("Ardour key bindings file not found at \"%1\" or contains errors."), path)
 633                       << endmsg;
 634                 return false;
 635         }
 636
 637         /* now find all release-driven bindings */
 638
 639         vector<string> groups;
 640         vector<string> names;
 641         vector<AccelKey> bindings;
 642
 643         ActionManager::get_all_actions (groups, names, bindings);
 644
 645         vector<string>::iterator g;
 646         vector<AccelKey>::iterator b;
 647         vector<string>::iterator n;
 648
 649         release_keys.clear ();
 650
 651         bool show_bindings = (getenv ("ARDOUR_SHOW_BINDINGS") != 0);
 652
 653         for (n = names.begin(), b = bindings.begin(), g = groups.begin(); n != names.end(); ++n, ++b, ++g) {
 654
 655                 if (show_bindings) {
 656
 657                         cerr << "Action: " << (*n) << " Group: " << (*g) << " binding = ";
 658
 659                         if ((*b).get_key() != GDK_VoidSymbol) {
 660                                 cerr << (*b).get_key() << " w/mod = " << hex << (*b).get_mod() << dec << " = " << (*b).get_abbrev();
 661                         } else {
 662                                 cerr << "unbound";
 663                         }
 664
 665                         cerr << endl;
 666                 }
 667
 668                 if ((*b).get_mod() & Gdk::RELEASE_MASK) {
 669                         release_keys.insert (pair<AccelKey,two_strings> (*b, two_strings (*g, *n)));
 670                 }
 671         }
 672
 673         return true;
 674 }
 675
 676