most of the 2.X->3.0 commit (up to rev 4299) except for gtk2_ardour/editor_canvas...
[ardour.git] / 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 #include <pbd/file_utils.h>
36
37 #include <ardour/filesystem_paths.h>
38
39 #include "keyboard.h"
40 #include "gui_thread.h"
41 #include "opts.h"
42 #include "actions.h"
43
44 #include "i18n.h"
45
46 using namespace PBD;
47 using namespace ARDOUR;
48 using namespace Gtk;
49 using namespace std;
50
51 #define KBD_DEBUG 1
52 bool debug_keyboard = false;
53
54 guint Keyboard::edit_but = 3;
55 guint Keyboard::edit_mod = GDK_CONTROL_MASK;
56 guint Keyboard::delete_but = 3;
57 guint Keyboard::delete_mod = GDK_SHIFT_MASK;
58 guint Keyboard::snap_mod = GDK_MOD3_MASK;
59
60 #ifdef GTKOSX
61 guint Keyboard::PrimaryModifier = GDK_META_MASK;   // Command
62 guint Keyboard::SecondaryModifier = GDK_MOD1_MASK; // Alt/Option
63 guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK; // Shift
64 guint Keyboard::Level4Modifier = GDK_CONTROL_MASK; // Control
65 guint Keyboard::CopyModifier = GDK_MOD1_MASK;      // Alt/Option
66 guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;   
67 guint Keyboard::button2_modifiers = Keyboard::SecondaryModifier|Keyboard::Level4Modifier;
68 #else
69 guint Keyboard::PrimaryModifier = GDK_CONTROL_MASK; // Control
70 guint Keyboard::SecondaryModifier = GDK_MOD1_MASK;  // Alt/Option
71 guint Keyboard::TertiaryModifier = GDK_SHIFT_MASK;  // Shift
72 guint Keyboard::Level4Modifier = GDK_MOD4_MASK;     // Mod4/Windows
73 guint Keyboard::CopyModifier = GDK_CONTROL_MASK;    
74 guint Keyboard::RangeSelectModifier = GDK_SHIFT_MASK;   
75 guint Keyboard::button2_modifiers = 0; /* not used */
76 #endif
77
78
79 Keyboard*    Keyboard::_the_keyboard = 0;
80 Gtk::Window* Keyboard::current_window = 0;
81 bool         Keyboard::_some_magic_widget_has_focus = false;
82
83 std::string Keyboard::user_keybindings_path;
84 bool Keyboard::can_save_keybindings = false;
85 bool Keyboard::bindings_changed_after_save_became_legal = false;
86 map<string,string> Keyboard::binding_files;
87 string Keyboard::_current_binding_name = _("Unknown");
88 map<AccelKey,pair<string,string>,Keyboard::AccelKeyLess> Keyboard::release_keys;
89
90 /* set this to initially contain the modifiers we care about, then track changes in ::set_edit_modifier() etc. */
91
92 GdkModifierType Keyboard::RelevantModifierKeyMask;
93
94 void
95 Keyboard::magic_widget_grab_focus () 
96 {
97         _some_magic_widget_has_focus = true;
98 }
99
100 void
101 Keyboard::magic_widget_drop_focus ()
102 {
103         _some_magic_widget_has_focus = false;
104 }
105
106 bool
107 Keyboard::some_magic_widget_has_focus ()
108 {
109         return _some_magic_widget_has_focus;
110 }
111
112 Keyboard::Keyboard ()
113 {
114         if (_the_keyboard == 0) {
115                 _the_keyboard = this;
116         }
117
118         RelevantModifierKeyMask = (GdkModifierType) gtk_accelerator_get_default_mod_mask ();
119
120         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | PrimaryModifier);
121         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | SecondaryModifier);
122         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | TertiaryModifier);
123         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | Level4Modifier);
124         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | CopyModifier);
125         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | RangeSelectModifier);
126
127         gtk_accelerator_set_default_mod_mask (RelevantModifierKeyMask);
128
129         snooper_id = gtk_key_snooper_install (_snooper, (gpointer) this);
130
131         XMLNode* node = ARDOUR_UI::instance()->keyboard_settings();
132         set_state (*node);
133 }
134
135 Keyboard::~Keyboard ()
136 {
137         gtk_key_snooper_remove (snooper_id);
138 }
139
140 XMLNode& 
141 Keyboard::get_state (void)
142 {
143         XMLNode* node = new XMLNode ("Keyboard");
144         char buf[32];
145
146         snprintf (buf, sizeof (buf), "%d", edit_but);
147         node->add_property ("edit-button", buf);
148         snprintf (buf, sizeof (buf), "%d", edit_mod);
149         node->add_property ("edit-modifier", buf);
150         snprintf (buf, sizeof (buf), "%d", delete_but);
151         node->add_property ("delete-button", buf);
152         snprintf (buf, sizeof (buf), "%d", delete_mod);
153         node->add_property ("delete-modifier", buf);
154         snprintf (buf, sizeof (buf), "%d", snap_mod);
155         node->add_property ("snap-modifier", buf);
156
157         return *node;
158 }
159
160 int 
161 Keyboard::set_state (const XMLNode& node)
162 {
163         const XMLProperty* prop;
164
165         if ((prop = node.property ("edit-button")) != 0) {
166                 sscanf (prop->value().c_str(), "%d", &edit_but);
167         } 
168
169         if ((prop = node.property ("edit-modifier")) != 0) {
170                 sscanf (prop->value().c_str(), "%d", &edit_mod);
171         } 
172
173         if ((prop = node.property ("delete-button")) != 0) {
174                 sscanf (prop->value().c_str(), "%d", &delete_but);
175         } 
176
177         if ((prop = node.property ("delete-modifier")) != 0) {
178                 sscanf (prop->value().c_str(), "%d", &delete_mod);
179         } 
180
181         if ((prop = node.property ("snap-modifier")) != 0) {
182                 sscanf (prop->value().c_str(), "%d", &snap_mod);
183         } 
184
185         return 0;
186 }
187
188 gint
189 Keyboard::_snooper (GtkWidget *widget, GdkEventKey *event, gpointer data)
190 {
191         return ((Keyboard *) data)->snooper (widget, event);
192 }
193
194 gint
195 Keyboard::snooper (GtkWidget *widget, GdkEventKey *event)
196 {
197         uint32_t keyval;
198         bool ret = false;
199
200 #if 0
201         cerr << "snoop widget " << widget << " key " << event->keyval << " type: " << event->type 
202              << " state " << std::hex << event->state << std::dec
203              << endl;
204 #endif
205
206 #if KBD_DEBUG
207         if (debug_keyboard) {
208                 cerr << "snoop widget " << widget << " key " << event->keyval << " type: " << event->type 
209                      << endl;
210         }
211 #endif
212
213         if (event->keyval == GDK_Shift_R) {
214                 keyval = GDK_Shift_L;
215
216         } else  if (event->keyval == GDK_Control_R) {
217                 keyval = GDK_Control_L;
218
219         } else {
220                 keyval = event->keyval;
221         }
222                 
223         if (event->type == GDK_KEY_PRESS) {
224
225                 if (find (state.begin(), state.end(), keyval) == state.end()) {
226                         state.push_back (keyval);
227                         sort (state.begin(), state.end());
228
229                 } else {
230
231                         /* key is already down. if its also used for release,
232                            prevent auto-repeat events.
233                         */
234
235                         for (map<AccelKey,two_strings,AccelKeyLess>::iterator k = release_keys.begin(); k != release_keys.end(); ++k) {
236
237                                 const AccelKey& ak (k->first);
238                                 
239                                 if (keyval == ak.get_key() && (Gdk::ModifierType)(event->state | Gdk::RELEASE_MASK) == ak.get_mod()) {
240                                         ret = true;
241                                         break;
242                                 }
243                         }
244                 }
245
246         } else if (event->type == GDK_KEY_RELEASE) {
247
248                 State::iterator i;
249                 
250                 if ((i = find (state.begin(), state.end(), keyval)) != state.end()) {
251                         state.erase (i);
252                         sort (state.begin(), state.end());
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                         two_strings ts (k->second);
259
260                         if (keyval == ak.get_key() && (Gdk::ModifierType)(event->state | Gdk::RELEASE_MASK) == ak.get_mod()) {
261                                 Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (ts.first.c_str(), ts.second.c_str());
262                                 if (act) {
263                                         act->activate();
264                                         ret = true;
265                                 }
266                                 break;
267                         }
268                 }
269         }
270
271         /* Special keys that we want to handle in
272            any dialog, no matter whether it uses
273            the regular set of accelerators or not
274         */
275
276         if (event->type == GDK_KEY_RELEASE && modifier_state_equals (event->state, PrimaryModifier)) {
277                 switch (event->keyval) {
278                 case GDK_w:
279                         if (current_window) {
280                                 current_window->hide ();
281                                 current_window = 0;
282                                 ret = true;
283                         }
284                         break;
285                 }
286         }
287
288         return ret;
289 }
290
291 bool
292 Keyboard::key_is_down (uint32_t keyval)
293 {
294         return find (state.begin(), state.end(), keyval) != state.end();
295 }
296
297 bool
298 Keyboard::enter_window (GdkEventCrossing *ev, Gtk::Window* win)
299 {
300         current_window = win;
301         return false;
302 }
303
304 bool
305 Keyboard::leave_window (GdkEventCrossing *ev, Gtk::Window* win)
306 {
307         if (ev) {
308                 switch (ev->detail) {
309                 case GDK_NOTIFY_INFERIOR:
310                         if (debug_keyboard) {
311                                 cerr << "INFERIOR crossing ... out\n";
312                         }
313                         break;
314                         
315                 case GDK_NOTIFY_VIRTUAL:
316                         if (debug_keyboard) {
317                                 cerr << "VIRTUAL crossing ... out\n";
318                         }
319                         /* fallthru */
320                         
321                 default:
322                         if (debug_keyboard) {
323                                 cerr << "REAL CROSSING ... out\n";
324                                 cerr << "clearing current target\n";
325                         }
326                         state.clear ();
327                         current_window = 0;
328                 }
329         } else {
330                 current_window = 0;
331         }
332
333         return false;
334 }
335
336 void
337 Keyboard::set_edit_button (guint but)
338 {
339         edit_but = but;
340 }
341
342 void
343 Keyboard::set_edit_modifier (guint mod)
344 {
345         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~edit_mod);
346         edit_mod = mod;
347         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | edit_mod);
348 }
349
350 void
351 Keyboard::set_delete_button (guint but)
352 {
353         delete_but = but;
354 }
355
356 void
357 Keyboard::set_delete_modifier (guint mod)
358 {
359         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~delete_mod);
360         delete_mod = mod;
361         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | delete_mod);
362 }
363
364 void
365 Keyboard::set_modifier (uint32_t newval, uint32_t& var)
366 {
367         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~var);
368         var = newval;
369         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | var);
370 }
371
372 void
373 Keyboard::set_snap_modifier (guint mod)
374 {
375         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask & ~snap_mod);
376         snap_mod = mod;
377         RelevantModifierKeyMask = GdkModifierType (RelevantModifierKeyMask | snap_mod);
378 }
379
380 bool
381 Keyboard::is_edit_event (GdkEventButton *ev)
382 {
383         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) && 
384                 (ev->button == Keyboard::edit_button()) && 
385                 ((ev->state & RelevantModifierKeyMask) == Keyboard::edit_modifier());
386 }
387
388 bool
389 Keyboard::is_button2_event (GdkEventButton* ev)
390 {
391 #ifdef GTKOSX
392         return (ev->button == 2) || 
393                 ((ev->button == 1) && 
394                  ((ev->state & Keyboard::button2_modifiers) == Keyboard::button2_modifiers));
395 #else
396         return ev->button == 2;
397 #endif  
398 }
399
400 bool
401 Keyboard::is_delete_event (GdkEventButton *ev)
402 {
403         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) && 
404                 (ev->button == Keyboard::delete_button()) && 
405                 ((ev->state & RelevantModifierKeyMask) == Keyboard::delete_modifier());
406 }
407
408 bool
409 Keyboard::is_context_menu_event (GdkEventButton *ev)
410 {
411         return (ev->type == GDK_BUTTON_PRESS || ev->type == GDK_BUTTON_RELEASE) && 
412                 (ev->button == 3) && 
413                 ((ev->state & RelevantModifierKeyMask) == 0);
414 }
415
416 bool 
417 Keyboard::no_modifiers_active (guint state)
418 {
419         return (state & RelevantModifierKeyMask) == 0;
420 }
421
422 bool
423 Keyboard::modifier_state_contains (guint state, ModifierMask mask)
424 {
425         return (state & mask) == (guint) mask;
426 }
427
428 bool
429 Keyboard::modifier_state_equals (guint state, ModifierMask mask)
430 {
431         return (state & RelevantModifierKeyMask) == (guint) mask;
432 }
433
434 Selection::Operation
435 Keyboard::selection_type (guint state)
436 {
437         /* note that there is no modifier for "Add" */
438
439         if (modifier_state_equals (state, RangeSelectModifier)) {
440                 return Selection::Extend;
441         } else if (modifier_state_equals (state, PrimaryModifier)) {
442                 return Selection::Toggle;
443         } else {
444                 return Selection::Set;
445         }
446 }
447
448
449 static void 
450 accel_map_changed (GtkAccelMap* map,
451                    gchar* path,
452                    guint  key,
453                    GdkModifierType mod,
454                    gpointer arg)
455 {
456         Keyboard::keybindings_changed ();
457 }
458
459 void
460 Keyboard::keybindings_changed ()
461 {
462         if (Keyboard::can_save_keybindings) {
463                 Keyboard::bindings_changed_after_save_became_legal = true;
464         }
465
466         Keyboard::save_keybindings ();
467 }
468
469 void
470 Keyboard::set_can_save_keybindings (bool yn)
471 {
472         can_save_keybindings = yn;
473 }
474
475 void
476 Keyboard::save_keybindings ()
477 {
478         if (can_save_keybindings && bindings_changed_after_save_became_legal) {
479                 Gtk::AccelMap::save (user_keybindings_path);
480         } 
481 }
482
483 void
484 Keyboard::setup_keybindings ()
485 {
486         using namespace ARDOUR_COMMAND_LINE;
487         std::string default_bindings = "mnemonic-us.bindings";
488         vector<string> strs;
489
490         binding_files.clear ();
491
492         ARDOUR::find_bindings_files (binding_files);
493
494         /* set up the per-user bindings path */
495         
496         strs.push_back (Glib::get_home_dir());
497         strs.push_back (".ardour3");
498         strs.push_back ("ardour.bindings");
499
500         user_keybindings_path = Glib::build_filename (strs);
501
502         if (Glib::file_test (user_keybindings_path, Glib::FILE_TEST_EXISTS)) {
503                 std::pair<string,string> newpair;
504                 newpair.first = _("your own");
505                 newpair.second = user_keybindings_path;
506                 binding_files.insert (newpair);
507         }
508
509         /* check to see if they gave a style name ("SAE", "ergonomic") or
510            an actual filename (*.bindings)
511         */
512
513         if (!keybindings_path.empty() && keybindings_path.find (".bindings") == string::npos) {
514                 
515                 // just a style name - allow user to
516                 // specify the layout type. 
517                 
518                 char* layout;
519                 
520                 if ((layout = getenv ("ARDOUR_KEYBOARD_LAYOUT")) != 0 && layout[0] != '\0') {
521                         
522                         /* user-specified keyboard layout */
523                         
524                         keybindings_path += '-';
525                         keybindings_path += layout;
526
527                 } else {
528
529                         /* default to US/ANSI - we have to pick something */
530
531                         keybindings_path += "-us";
532                 }
533                 
534                 keybindings_path += ".bindings";
535         } 
536
537         if (keybindings_path.empty()) {
538
539                 /* no path or binding name given: check the user one first */
540
541                 if (!Glib::file_test (user_keybindings_path, Glib::FILE_TEST_EXISTS)) {
542                         
543                         keybindings_path = "";
544
545                 } else {
546                         
547                         keybindings_path = user_keybindings_path;
548                 }
549         } 
550
551         /* if we still don't have a path at this point, use the default */
552
553         if (keybindings_path.empty()) {
554                 keybindings_path = default_bindings;
555         }
556
557         while (true) {
558
559                 if (!Glib::path_is_absolute (keybindings_path)) {
560                         
561                         /* not absolute - look in the usual places */
562                         sys::path keybindings_file;
563
564                         SearchPath spath = ardour_search_path() + user_config_directory() + system_config_search_path();
565
566                         if ( ! find_file_in_search_path (spath, keybindings_path, keybindings_file)) {
567                                 
568                                 if (keybindings_path == default_bindings) {
569                                         error << _("Default keybindings not found - Ardour will be hard to use!") << endmsg;
570                                         return;
571                                 } else {
572                                         warning << string_compose (_("Key bindings file \"%1\" not found. Default bindings used instead"), 
573                                                                    keybindings_path)
574                                                 << endmsg;
575                                         keybindings_path = default_bindings;
576                                 }
577
578                         } else {
579
580                                 /* use it */
581
582                                 keybindings_path = keybindings_file.to_string();
583                                 break;
584                                 
585                         }
586
587                 } else {
588                         
589                         /* path is absolute already */
590
591                         if (!Glib::file_test (keybindings_path, Glib::FILE_TEST_EXISTS)) {
592                                 if (keybindings_path == default_bindings) {
593                                         error << _("Default keybindings not found - Ardour will be hard to use!") << endmsg;
594                                         return;
595                                 } else {
596                                         warning << string_compose (_("Key bindings file \"%1\" not found. Default bindings used instead"), 
597                                                                    keybindings_path)
598                                                 << endmsg;
599                                         keybindings_path = default_bindings;
600                                 }
601
602                         } else {
603                                 break;
604                         }
605                 }
606         }
607
608         load_keybindings (keybindings_path);
609
610         /* catch changes */
611
612         GtkAccelMap* accelmap = gtk_accel_map_get();
613         g_signal_connect (accelmap, "changed", (GCallback) accel_map_changed, 0);
614 }
615
616 bool
617 Keyboard::load_keybindings (string path)
618 {
619         try {
620                 cerr << "loading bindings from " << path << endl;
621
622                 Gtk::AccelMap::load (path);
623
624                 _current_binding_name = _("Unknown");
625
626                 for (map<string,string>::iterator x = binding_files.begin(); x != binding_files.end(); ++x) {
627                         if (path == x->second) {
628                                 _current_binding_name = x->first;
629                                 break;
630                         }
631                 }
632
633
634         } catch (...) {
635                 error << string_compose (_("Ardour key bindings file not found at \"%1\" or contains errors."), path)
636                       << endmsg;
637                 return false;
638         }
639
640         /* now find all release-driven bindings */
641
642         vector<string> groups;
643         vector<string> names;
644         vector<AccelKey> bindings;
645         
646         ActionManager::get_all_actions (groups, names, bindings);
647         
648         vector<string>::iterator g;
649         vector<AccelKey>::iterator b;
650         vector<string>::iterator n;
651
652         release_keys.clear ();
653
654         for (n = names.begin(), b = bindings.begin(), g = groups.begin(); n != names.end(); ++n, ++b, ++g) {
655                 if ((*b).get_mod() & Gdk::RELEASE_MASK) {
656                         release_keys.insert (pair<AccelKey,two_strings> (*b, two_strings (*g, *n)));
657                 }
658         }
659
660         return true;
661 }
662
663