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 static gboolean alt_l = FALSE;
45 static gboolean meta_l = FALSE;
46 static gboolean super_l = FALSE;
47 static gboolean hyper_l = FALSE;
49 void modkeys_startup(gboolean reconfigure)
53 /* reset the keys to not be bound to any masks */
54 for (i = 0; i < OB_MODKEY_NUM_KEYS; ++i)
57 modmap = XGetModifierMapping(ob_display);
58 g_assert(modmap->max_keypermod > 0);
60 XDisplayKeycodes(ob_display, &min_keycode, &max_keycode);
61 keymap = XGetKeyboardMapping(ob_display, min_keycode,
62 max_keycode - min_keycode + 1,
63 &keysyms_per_keycode);
65 alt_l = meta_l = super_l = hyper_l = FALSE;
67 /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
68 for (i = 0; i < NUM_MASKS; ++i) {
69 /* go through each keycode that is bound to the mask */
70 for (j = 0; j < modmap->max_keypermod; ++j) {
72 /* get a keycode that is bound to the mask (i) */
73 KeyCode keycode = modmap->modifiermap[i*modmap->max_keypermod + j];
75 /* go through each keysym bound to the given keycode */
76 for (k = 0; k < keysyms_per_keycode; ++k) {
77 sym = keymap[(keycode-min_keycode) * keysyms_per_keycode +
79 if (sym != NoSymbol) {
80 /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */
81 set_modkey_mask(nth_mask(i), sym);
88 /* CapsLock, Shift, and Control are special and hard-coded */
89 modkeys_keys[OB_MODKEY_KEY_CAPSLOCK] = LockMask;
90 modkeys_keys[OB_MODKEY_KEY_SHIFT] = ShiftMask;
91 modkeys_keys[OB_MODKEY_KEY_CONTROL] = ControlMask;
94 void modkeys_shutdown(gboolean reconfigure)
96 XFreeModifiermap(modmap);
100 guint modkeys_keycode_to_mask(guint keycode)
105 if (keycode == NoSymbol) return 0;
107 /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
108 for (i = 0; i < NUM_MASKS; ++i) {
109 /* go through each keycode that is bound to the mask */
110 for (j = 0; j < modmap->max_keypermod; ++j) {
111 /* compare with a keycode that is bound to the mask (i) */
112 if (modmap->modifiermap[i*modmap->max_keypermod + j] == keycode)
119 guint modkeys_only_modifier_masks(guint mask)
122 /* strip off these lock keys. they shouldn't affect key bindings */
123 mask &= ~LockMask; /* use the LockMask, not what capslock is bound to,
124 because you could bind it to something else and it
125 should work as that modifier then. i think capslock
127 mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_NUMLOCK);
128 mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_SCROLLLOCK);
132 guint modkeys_key_to_mask(ObModkeysKey key)
134 return modkeys_keys[key];
137 static void set_modkey_mask(guchar mask, KeySym sym)
139 /* find what key this is, and bind it to the mask */
141 if (sym == XK_Num_Lock)
142 modkeys_keys[OB_MODKEY_KEY_NUMLOCK] |= mask;
143 else if (sym == XK_Scroll_Lock)
144 modkeys_keys[OB_MODKEY_KEY_SCROLLLOCK] |= mask;
146 else if (sym == XK_Super_L && super_l)
147 modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask;
148 else if (sym == XK_Super_L && !super_l)
149 /* left takes precident over right, so erase any masks the right
151 modkeys_keys[OB_MODKEY_KEY_SUPER] = mask, super_l = TRUE;
152 else if (sym == XK_Super_R && !super_l)
153 modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask;
155 else if (sym == XK_Hyper_L && hyper_l)
156 modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask;
157 else if (sym == XK_Hyper_L && !hyper_l)
158 modkeys_keys[OB_MODKEY_KEY_HYPER] = mask, hyper_l = TRUE;
159 else if (sym == XK_Hyper_R && !hyper_l)
160 modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask;
162 else if (sym == XK_Alt_L && alt_l)
163 modkeys_keys[OB_MODKEY_KEY_ALT] |= mask;
164 else if (sym == XK_Alt_L && !alt_l)
165 modkeys_keys[OB_MODKEY_KEY_ALT] = mask, alt_l = TRUE;
166 else if (sym == XK_Alt_R && !alt_l)
167 modkeys_keys[OB_MODKEY_KEY_ALT] |= mask;
169 else if (sym == XK_Meta_L && meta_l)
170 modkeys_keys[OB_MODKEY_KEY_META] |= mask;
171 else if (sym == XK_Meta_L && !meta_l)
172 modkeys_keys[OB_MODKEY_KEY_META] = mask, meta_l = TRUE;
173 else if (sym == XK_Meta_R && !meta_l)
174 modkeys_keys[OB_MODKEY_KEY_META] |= mask;
176 /* CapsLock, Shift, and Control are special and hard-coded */
179 KeyCode modkeys_sym_to_code(KeySym sym)
183 /* go through each keycode and look for the keysym */
184 for (i = min_keycode; i <= max_keycode; ++i)
185 for (j = 0; j < keysyms_per_keycode; ++j)
186 if (sym == keymap[(i-min_keycode) * keysyms_per_keycode + j])