libs/gtkmm2ext/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
  22 #include <algorithm>
  23 #include <fstream>
  24 #include <iostream>
  25
  26 #include <ctype.h>
  27
  28 #include <gtkmm/widget.h>
  29 #include <gtkmm/window.h>
  30 #include <gtkmm/accelmap.h>
  31 #include <gdk/gdkkeysyms.h>
  32
  33 #include "pbd/error.h"
  34 #include "pbd/file_utils.h"
  35 #include "pbd/search_path.h"
  36 #include "pbd/xml++.h"
  37 #include "pbd/debug.h"
  38
  39 #include "gtkmm2ext/keyboard.h"
  40 #include "gtkmm2ext/actions.h"
  41 #include "gtkmm2ext/debug.h"
  42
  43 #include "i18n.h"
  44
  45 using namespace PBD;
  46 using namespace Gtk;
  47 using namespace Gtkmm2ext;
  48 using namespace std;
  49
  50 guint Keyboard::edit_but = 3;
  51 guint Keyboard::edit_mod = GDK_CONTROL_MASK;
  52 guint Keyboard::delete_but = 3;
  53 guint Keyboard::delete_mod = GDK_SHIFT_MASK;
  54 guint Keyboard::insert_note_but = 3;
  55 guint Keyboard::insert_note_mod = GDK_CONTROL_MASK;
  56 guint Keyboard::snap_mod = GDK_MOD3_MASK;
  57
  58 #ifdef GTKOSX
  59
  60 guint Keyboard::PrimaryModifier = GDK_META_MASK;   // Command
  61 guint Keyboard::SecondaryModifier = GDK_MOD1_MASK; // Alt/Option
  62 guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK; // Shift
  63 guint Keyboard::Level4Modifier = GDK_CONTROL_MASK; // Control
  64 guint Keyboard::CopyModifier = GDK_MOD1_MASK;      // Alt/Option
  65 guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
  66 guint Keyboard::button2_modifiers = Keyboard::SecondaryModifier|Keyboard::Level4Modifier;
  67
  68 const char* Keyboard::primary_modifier_name() { return _("Command"); }
  69 const char* Keyboard::secondary_modifier_name() { return _("Option"); }
  70 const char* Keyboard::tertiary_modifier_name() { return _("Shift"); }
  71 const char* Keyboard::level4_modifier_name() { return _("Control"); }
  72 const char* Keyboard::copy_modifier_name() { return _("Mod1";    ); }
  73 const char* Keyboard::rangeselect_modifier_name() { return _("Shift"); }
  74
  75 #else
  76
  77 guint Keyboard::PrimaryModifier = GDK_CONTROL_MASK; // Control
  78 guint Keyboard::SecondaryModifier = GDK_MOD1_MASK;  // Alt/Option
  79 guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK;  // Shift
  80 guint Keyboard::Level4Modifier = GDK_MOD4_MASK;     // Mod4/Windows
  81 guint Keyboard::CopyModifier = GDK_CONTROL_MASK;
  82 guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;
  83 guint Keyboard::button2_modifiers = 0; /* not used */
  84
  85 const char* Keyboard::primary_modifier_name() { return _("Control"); }
  86 const char* Keyboard::secondary_modifier_name() { return _("Alt"); }
  87 const char* Keyboard::tertiary_modifier_name() { return _("Shift"); }
  88 const char* Keyboard::level4_modifier_name() { return _("Meta"); }
  89 const char* Keyboard::copy_modifier_name() { return _("Control"); }
  90 const char* Keyboard::rangeselect_modifier_name() { return _("Shift"); }
  91
  92 #endif
  93
  94 Keyboard*    Keyboard::_the_keyboard = 0;
  95 Gtk::Window* Keyboard::current_window = 0;
  96 bool         Keyboard::_some_magic_widget_has_focus = false;
  97
  98 std::string Keyboard::user_keybindings_path;
  99 bool Keyboard::can_save_keybindings = false;
 100 bool Keyboard::bindings_changed_after_save_became_legal = false;
 101 map<string,string> Keyboard::binding_files;
 102 string Keyboard::_current_binding_name;
 103 map<AccelKey,pair<string,string>,Keyboard::AccelKeyLess> Keyboard::release_keys;
 104
 105 /* set this to initially contain the modifiers we care about, then track changes in ::set_edit_modifier() etc. */
 106
 107 GdkModifierType Keyboard::RelevantModifierKeyMask;
 108
 109 void
 110 Keyboard::magic_widget_grab_focus ()
 111 {
 112         _some_magic_widget_has_focus = true;
 113 }
 114
 115 void
 116 Keyboard::magic_widget_drop_focus ()
 117 {
 118         _some_magic_widget_has_focus = false;
 119 }
 120
 121 bool
 122 Keyboard::some_magic_widget_has_focus ()
 123 {
 124         return _some_magic_widget_has_focus;
 125 }
 126
 127 Keyboard::Keyboard ()
 128 {
 129         if (_the_keyboard == 0) {
 130                 _the_keyboard = this;
 131                 _current_binding_name = _("Unknown");
 132         }
 133
 134         RelevantModifierKeyMask = (GdkModifierType) gtk_accelerator_get_default_mod_mask ();
 135
 136         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | PrimaryModifier);
 137         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | SecondaryModifier);
 138         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | TertiaryModifier);
 139         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | Level4Modifier);
 140         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | CopyModifier);
 141         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | RangeSelectModifier);
 142
 143         gtk_accelerator_set_default_mod_mask (RelevantModifierKeyMask);
 144
 145         snooper_id = gtk_key_snooper_install (_snooper, (gpointer) this);
 146 }
 147
 148 Keyboard::~Keyboard ()
 149 {
 150         gtk_key_snooper_remove (snooper_id);
 151 }
 152
 153 XMLNode&
 154 Keyboard::get_state (void)
 155 {
 156         XMLNode* node = new XMLNode ("Keyboard");
 157         char buf[32];
 158
 159         snprintf (buf, sizeof (buf), "%d", edit_but);
 160         node->add_property ("edit-button", buf);
 161         snprintf (buf, sizeof (buf), "%d", edit_mod);
 162         node->add_property ("edit-modifier", buf);
 163         snprintf (buf, sizeof (buf), "%d", delete_but);
 164         node->add_property ("delete-button", buf);
 165         snprintf (buf, sizeof (buf), "%d", delete_mod);
 166         node->add_property ("delete-modifier", buf);
 167         snprintf (buf, sizeof (buf), "%d", snap_mod);
 168         node->add_property ("snap-modifier", buf);
 169         snprintf (buf, sizeof (buf), "%d", insert_note_but);
 170         node->add_property ("insert-note-button", buf);
 171         snprintf (buf, sizeof (buf), "%d", insert_note_mod);
 172         node->add_property ("insert-note-modifier", buf);
 173
 174         return *node;
 175 }
 176
 177 int
 178 Keyboard::set_state (const XMLNode& node, int /*version*/)
 179 {
 180         const XMLProperty* prop;
 181
 182         if ((prop = node.property ("edit-button")) != 0) {
 183                 sscanf (prop->value().c_str(), "%d", &edit_but);
 184         }
 185
 186         if ((prop = node.property ("edit-modifier")) != 0) {
 187                 sscanf (prop->value().c_str(), "%d", &edit_mod);
 188         }
 189
 190         if ((prop = node.property ("delete-button")) != 0) {
 191                 sscanf (prop->value().c_str(), "%d", &delete_but);
 192         }
 193
 194         if ((prop = node.property ("delete-modifier")) != 0) {
 195                 sscanf (prop->value().c_str(), "%d", &delete_mod);
 196         }
 197
 198         if ((prop = node.property ("snap-modifier")) != 0) {
 199                 sscanf (prop->value().c_str(), "%d", &snap_mod);
 200         }
 201
 202         if ((prop = node.property ("insert-note-button")) != 0) {
 203                 sscanf (prop->value().c_str(), "%d", &insert_note_but);
 204         }
 205
 206         if ((prop = node.property ("insert-note-modifier")) != 0) {
 207                 sscanf (prop->value().c_str(), "%d", &insert_note_mod);
 208         }
 209
 210         return 0;
 211 }
 212
 213 gint
 214 Keyboard::_snooper (GtkWidget *widget, GdkEventKey *event, gpointer data)
 215 {
 216         return ((Keyboard *) data)->snooper (widget, event);
 217 }
 218
 219 gint
 220 Keyboard::snooper (GtkWidget *widget, GdkEventKey *event)
 221 {
 222         uint32_t keyval;
 223         bool ret = false;
 224
 225         DEBUG_TRACE (
 226                 DEBUG::Keyboard,
 227                 string_compose (
 228                         "Snoop widget %1 key %2 type %3 state %4 magic %5\n",
 229                         widget, event->keyval, event->type, event->state, _some_magic_widget_has_focus
 230                         )
 231                 );
 232
 233         if (event->keyval == GDK_Shift_R) {
 234                 keyval = GDK_Shift_L;
 235
 236         } else if (event->keyval == GDK_Control_R) {
 237                 keyval = GDK_Control_L;
 238
 239         } else {
 240                 keyval = event->keyval;
 241         }
 242
 243         if (event->type == GDK_KEY_PRESS) {
 244
 245                 if (find (state.begin(), state.end(), keyval) == state.end()) {
 246                         state.push_back (keyval);
 247                         sort (state.begin(), state.end());
 248
 249                 } else {
 250
 251                         /* key is already down. if its also used for release,
 252                            prevent auto-repeat events.
 253                         */
 254
 255                         for (map<AccelKey,two_strings,AccelKeyLess>::iterator k = release_keys.begin(); k != release_keys.end(); ++k) {
 256
 257                                 const AccelKey& ak (k->first);
 258
 259                                 if (keyval == ak.get_key() && (Gdk::ModifierType)((event->state & Keyboard::RelevantModifierKeyMask) | Gdk::RELEASE_MASK) == ak.get_mod()) {
 260                                         DEBUG_TRACE (DEBUG::Keyboard, "Suppress auto repeat\n");
 261                                         ret = true;
 262                                         break;
 263                                 }
 264                         }
 265                 }
 266
 267         } else if (event->type == GDK_KEY_RELEASE) {
 268
 269                 State::iterator i;
 270
 271                 if ((i = find (state.begin(), state.end(), keyval)) != state.end()) {
 272                         state.erase (i);
 273                         sort (state.begin(), state.end());
 274                 }
 275
 276                 for (map<AccelKey,two_strings,AccelKeyLess>::iterator k = release_keys.begin(); k != release_keys.end(); ++k) {
 277
 278                         const AccelKey& ak (k->first);
 279                         two_strings ts (k->second);
 280
 281                         if (keyval == ak.get_key() && (Gdk::ModifierType)((event->state & Keyboard::RelevantModifierKeyMask) | Gdk::RELEASE_MASK) == ak.get_mod()) {
 282                                 Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (ts.first.c_str(), ts.second.c_str());
 283                                 if (act) {
 284                                         DEBUG_TRACE (DEBUG::Keyboard, string_compose ("Activate %1 %2\n", ts.first, ts.second));
 285                                         act->activate();
 286                                         DEBUG_TRACE (DEBUG::Keyboard, string_compose ("Use repeat, suppress other\n", ts.first, ts.second));
 287                                         ret = true;
 288                                 }
 289                                 break;
 290                         }
 291                 }
 292         }
 293
 294         /* Special keys that we want to handle in
 295            any dialog, no matter whether it uses
 296            the regular set of accelerators or not
 297         */
 298
 299         if (event->type == GDK_KEY_RELEASE && modifier_state_equals (event->state, PrimaryModifier)) {
 300                 switch (event->keyval) {
 301                 case GDK_w:
 302                         if (current_window) {
 303                                 current_window->hide ();
 304                                 current_window = 0;
 305                                 ret = true;
 306                         }
 307                         break;
 308                 }
 309         }
 310
 311         return ret;
 312 }
 313
 314 bool
 315 Keyboard::key_is_down (uint32_t keyval)
 316 {
 317         return find (state.begin(), state.end(), keyval) != state.end();
 318 }
 319
 320 bool
 321 Keyboard::enter_window (GdkEventCrossing *, Gtk::Window* win)
 322 {
 323         current_window = win;
 324         return false;
 325 }
 326
 327 bool
 328 Keyboard::leave_window (GdkEventCrossing *ev, Gtk::Window* /*win*/)
 329 {
 330         if (ev) {
 331                 switch (ev->detail) {
 332                 case GDK_NOTIFY_INFERIOR:
 333                         DEBUG_TRACE (DEBUG::Keyboard, "INFERIOR crossing ... out\n");
 334                         break;
 335
 336                 case GDK_NOTIFY_VIRTUAL:
 337                         DEBUG_TRACE (DEBUG::Keyboard, "VIRTUAL crossing ... out\n");
 338                         /* fallthru */
 339
 340                 default:
 341                         DEBUG_TRACE (DEBUG::Keyboard, "REAL crossing ... out\n");
 342                         DEBUG_TRACE (DEBUG::Keyboard, "Clearing current target\n");
 343                         state.clear ();
 344                         current_window = 0;
 345                 }
 346         } else {
 347                 current_window = 0;
 348         }
 349
 350         return false;
 351 }
 352
 353 void
 354 Keyboard::set_edit_button (guint but)
 355 {
 356         edit_but = but;
 357 }
 358
 359 void
 360 Keyboard::set_edit_modifier (guint mod)
 361 {
 362         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~edit_mod);
 363         edit_mod = mod;
 364         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | edit_mod);
 365 }
 366
 367 void
 368 Keyboard::set_delete_button (guint but)
 369 {
 370         delete_but = but;
 371 }
 372
 373 void
 374 Keyboard::set_delete_modifier (guint mod)
 375 {
 376         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~delete_mod);
 377         delete_mod = mod;
 378         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | delete_mod);
 379 }
 380
 381 void
 382 Keyboard::set_insert_note_button (guint but)
 383 {
 384         insert_note_but = but;
 385 }
 386
 387 void
 388 Keyboard::set_insert_note_modifier (guint mod)
 389 {
 390         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~insert_note_mod);
 391         insert_note_mod = mod;
 392         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | insert_note_mod);
 393 }
 394
 395
 396 void
 397 Keyboard::set_modifier (uint32_t newval, uint32_t& var)
 398 {
 399         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~var);
 400         var = newval;
 401         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | var);
 402 }
 403
 404 void
 405 Keyboard::set_snap_modifier (guint mod)
 406 {
 407         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~snap_mod);
 408         snap_mod = mod;
 409         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | snap_mod);
 410 }
 411
 412 bool
 413 Keyboard::is_edit_event (GdkEventButton *ev)
 414 {
 415         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
 416                 (ev->button == Keyboard::edit_button()) &&
 417                 ((ev->state & RelevantModifierKeyMask) == Keyboard::edit_modifier());
 418 }
 419
 420 bool
 421 Keyboard::is_insert_note_event (GdkEventButton *ev)
 422 {
 423         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
 424                 (ev->button == Keyboard::insert_note_button()) &&
 425                 ((ev->state & RelevantModifierKeyMask) == Keyboard::insert_note_modifier());
 426 }
 427
 428 bool
 429 Keyboard::is_button2_event (GdkEventButton* ev)
 430 {
 431 #ifdef GTKOSX
 432         return (ev->button == 2) ||
 433                 ((ev->button == 1) &&
 434                  ((ev->state & Keyboard::button2_modifiers) == Keyboard::button2_modifiers));
 435 #else
 436         return ev->button == 2;
 437 #endif
 438 }
 439
 440 bool
 441 Keyboard::is_delete_event (GdkEventButton *ev)
 442 {
 443         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
 444                 (ev->button == Keyboard::delete_button()) &&
 445                 ((ev->state & RelevantModifierKeyMask) == Keyboard::delete_modifier());
 446 }
 447
 448 bool
 449 Keyboard::is_context_menu_event (GdkEventButton *ev)
 450 {
 451         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) &&
 452                 (ev->button == 3) &&
 453                 ((ev->state & RelevantModifierKeyMask) == 0);
 454 }
 455
 456 bool
 457 Keyboard::no_modifiers_active (guint state)
 458 {
 459         return (state & RelevantModifierKeyMask) == 0;
 460 }
 461
 462 bool
 463 Keyboard::modifier_state_contains (guint state, ModifierMask mask)
 464 {
 465         return (state & mask) == (guint) mask;
 466 }
 467
 468 bool
 469 Keyboard::modifier_state_equals (guint state, ModifierMask mask)
 470 {
 471         return (state & RelevantModifierKeyMask) == (guint) mask;
 472 }
 473
 474 void
 475 Keyboard::keybindings_changed ()
 476 {
 477         if (Keyboard::can_save_keybindings) {
 478                 Keyboard::bindings_changed_after_save_became_legal = true;
 479         }
 480
 481         Keyboard::save_keybindings ();
 482 }
 483
 484 void
 485 Keyboard::set_can_save_keybindings (bool yn)
 486 {
 487         can_save_keybindings = yn;
 488 }
 489
 490 void
 491 Keyboard::save_keybindings ()
 492 {
 493         if (can_save_keybindings && bindings_changed_after_save_became_legal) {
 494                 Gtk::AccelMap::save (user_keybindings_path);
 495         }
 496 }
 497
 498 bool
 499 Keyboard::load_keybindings (string path)
 500 {
 501         try {
 502                 info << "Loading bindings from " << path << endl;
 503
 504                 Gtk::AccelMap::load (path);
 505
 506                 _current_binding_name = _("Unknown");
 507
 508                 for (map<string,string>::iterator x = binding_files.begin(); x != binding_files.end(); ++x) {
 509                         if (path == x->second) {
 510                                 _current_binding_name = x->first;
 511                                 break;
 512                         }
 513                 }
 514
 515
 516         } catch (...) {
 517                 error << string_compose (_("Ardour key bindings file not found at \"%1\" or contains errors."), path)
 518                       << endmsg;
 519                 return false;
 520         }
 521
 522         /* now find all release-driven bindings */
 523
 524         vector<string> groups;
 525         vector<string> names;
 526         vector<string> tooltips;
 527         vector<AccelKey> bindings;
 528
 529         ActionManager::get_all_actions (groups, names, tooltips, bindings);
 530
 531         vector<string>::iterator g;
 532         vector<AccelKey>::iterator b;
 533         vector<string>::iterator n;
 534
 535         release_keys.clear ();
 536
 537         for (n = names.begin(), b = bindings.begin(), g = groups.begin(); n != names.end(); ++n, ++b, ++g) {
 538                 stringstream s;
 539                 s << "Action: " << *n << " Group: " << *g << " Binding: ";
 540
 541                 if ((*b).get_key() != GDK_VoidSymbol) {
 542                         s << b->get_key() << " w/mod " << hex << b->get_mod() << dec << " = " << b->get_abbrev () << "\n";
 543                 } else {
 544                         s << "unbound\n";
 545                 }
 546
 547                 DEBUG_TRACE (DEBUG::Bindings, s.str ());
 548         }
 549
 550         for (n = names.begin(), b = bindings.begin(), g = groups.begin(); n != names.end(); ++n, ++b, ++g) {
 551                 if ((*b).get_mod() & Gdk::RELEASE_MASK) {
 552                         release_keys.insert (pair<AccelKey,two_strings> (*b, two_strings (*g, *n)));
 553                 }
 554         }
 555
 556         return true;
 557 }
 558
 559