1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 modkeys.c for the Openbox window manager
4 Copyright (c) 2007 Dana Jansens
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 See the COPYING file for a copy of the GNU General Public License.
23 #include <X11/keysym.h>
25 /* These masks are constants and the modifier keys are bound to them as
27 ShiftMask (1<<0), LockMask (1<<1), ControlMask (1<<2), Mod1Mask (1<<3),
28 Mod2Mask (1<<4), Mod3Mask (1<<5), Mod4Mask (1<<6), Mod5Mask (1<<7)
31 #define ALL_MASKS 0xff /* an or'ing of all 8 keyboard masks */
33 /* Get the bitflag for the n'th modifier mask */
34 #define nth_mask(n) (1 << n)
36 static void set_modkey_mask(guchar mask, KeySym sym);
38 static XModifierKeymap *modmap;
39 static KeySym *keymap;
40 static gint min_keycode, max_keycode, keysyms_per_keycode;
41 /* This is a bitmask of the different masks for each modifier key */
42 static guchar modkeys_keys[OB_MODKEY_NUM_KEYS];
44 void modkeys_startup(gboolean reconfigure)
48 /* reset the keys to not be bound to any masks */
49 for (i = 0; i < OB_MODKEY_NUM_KEYS; ++i)
52 modmap = XGetModifierMapping(ob_display);
53 g_assert(modmap->max_keypermod > 0);
55 XDisplayKeycodes(ob_display, &min_keycode, &max_keycode);
56 keymap = XGetKeyboardMapping(ob_display, min_keycode,
57 max_keycode - min_keycode + 1,
58 &keysyms_per_keycode);
60 /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
61 for (i = 0; i < NUM_MASKS; ++i) {
62 /* go through each keycode that is bound to the mask */
63 for (j = 0; j < modmap->max_keypermod; ++j) {
65 /* get a keycode that is bound to the mask (i) */
66 KeyCode keycode = modmap->modifiermap[i*modmap->max_keypermod + j];
68 /* go through each keysym bound to the given keycode */
69 for (k = 0; k < keysyms_per_keycode; ++k) {
70 sym = keymap[(keycode-min_keycode) * keysyms_per_keycode +
72 if (sym != NoSymbol) {
73 /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */
74 set_modkey_mask(nth_mask(i), sym);
81 /* CapsLock, Shift, and Control are special and hard-coded */
82 modkeys_keys[OB_MODKEY_KEY_CAPSLOCK] = LockMask;
83 modkeys_keys[OB_MODKEY_KEY_SHIFT] = ShiftMask;
84 modkeys_keys[OB_MODKEY_KEY_CONTROL] = ControlMask;
87 void modkeys_shutdown(gboolean reconfigure)
89 XFreeModifiermap(modmap);
93 guint modkeys_keycode_to_mask(guint keycode)
98 if (keycode == NoSymbol) return 0;
100 /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
101 for (i = 0; i < NUM_MASKS; ++i) {
102 /* go through each keycode that is bound to the mask */
103 for (j = 0; j < modmap->max_keypermod; ++j) {
104 /* compare with a keycode that is bound to the mask (i) */
105 if (modmap->modifiermap[i*modmap->max_keypermod + j] == keycode)
112 guint modkeys_only_modifier_masks(guint mask)
115 /* strip off these lock keys. they shouldn't affect key bindings */
116 mask &= ~LockMask; /* use the LockMask, not what capslock is bound to,
117 because you could bind it to something else and it
118 should work as that modifier then. i think capslock
120 mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_NUMLOCK);
121 mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_SCROLLLOCK);
125 guint modkeys_key_to_mask(ObModkeysKey key)
127 return modkeys_keys[key];
130 static void set_modkey_mask(guchar mask, KeySym sym)
132 /* find what key this is, and bind it to the mask */
134 if (sym == XK_Num_Lock)
135 modkeys_keys[OB_MODKEY_KEY_NUMLOCK] |= mask;
136 else if (sym == XK_Scroll_Lock)
137 modkeys_keys[OB_MODKEY_KEY_SCROLLLOCK] |= mask;
138 else if (sym == XK_Super_L || sym == XK_Super_R)
139 modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask;
140 else if (sym == XK_Hyper_L || sym == XK_Hyper_R)
141 modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask;
142 else if (sym == XK_Alt_L || sym == XK_Alt_R)
143 modkeys_keys[OB_MODKEY_KEY_ALT] |= mask;
144 else if (sym == XK_Meta_L || sym == XK_Meta_R)
145 modkeys_keys[OB_MODKEY_KEY_META] |= mask;
146 /* CapsLock, Shift, and Control are special and hard-coded */
149 KeyCode modkeys_sym_to_code(KeySym sym)
153 /* go through each keycode and look for the keysym */
154 for (i = min_keycode; i <= max_keycode; ++i)
155 for (j = 0; j < keysyms_per_keycode; ++j)
156 if (sym == keymap[(i-min_keycode) * keysyms_per_keycode + j])