1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 obt/keyboard.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.
19 #include "obt/display.h"
20 #include "obt/keyboard.h"
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
);
37 void obt_keyboard_shutdown();
39 static XModifierKeymap
*modmap
;
40 static KeySym
*keymap
;
41 static gint min_keycode
, max_keycode
, keysyms_per_keycode
;
42 /* This is a bitmask of the different masks for each modifier key */
43 static guchar modkeys_keys
[OBT_KEYBOARD_NUM_MODKEYS
];
45 static gboolean alt_l
= FALSE
;
46 static gboolean meta_l
= FALSE
;
47 static gboolean super_l
= FALSE
;
48 static gboolean hyper_l
= FALSE
;
50 static gboolean started
= FALSE
;
52 void obt_keyboard_reload(void)
56 if (started
) obt_keyboard_shutdown(); /* free stuff */
59 /* reset the keys to not be bound to any masks */
60 for (i
= 0; i
< OBT_KEYBOARD_NUM_MODKEYS
; ++i
)
63 modmap
= XGetModifierMapping(obt_display
);
64 /* note: modmap->max_keypermod can be 0 when there is no valid key layout
67 XDisplayKeycodes(obt_display
, &min_keycode
, &max_keycode
);
68 keymap
= XGetKeyboardMapping(obt_display
, min_keycode
,
69 max_keycode
- min_keycode
+ 1,
70 &keysyms_per_keycode
);
72 alt_l
= meta_l
= super_l
= hyper_l
= FALSE
;
74 /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
75 for (i
= 0; i
< NUM_MASKS
; ++i
) {
76 /* go through each keycode that is bound to the mask */
77 for (j
= 0; j
< modmap
->max_keypermod
; ++j
) {
79 /* get a keycode that is bound to the mask (i) */
80 KeyCode keycode
= modmap
->modifiermap
[i
*modmap
->max_keypermod
+ j
];
82 /* go through each keysym bound to the given keycode */
83 for (k
= 0; k
< keysyms_per_keycode
; ++k
) {
84 sym
= keymap
[(keycode
-min_keycode
) * keysyms_per_keycode
+
86 if (sym
!= NoSymbol
) {
87 /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */
88 set_modkey_mask(nth_mask(i
), sym
);
95 /* CapsLock, Shift, and Control are special and hard-coded */
96 modkeys_keys
[OBT_KEYBOARD_MODKEY_CAPSLOCK
] = LockMask
;
97 modkeys_keys
[OBT_KEYBOARD_MODKEY_SHIFT
] = ShiftMask
;
98 modkeys_keys
[OBT_KEYBOARD_MODKEY_CONTROL
] = ControlMask
;
101 void obt_keyboard_shutdown(void)
103 XFreeModifiermap(modmap
);
110 guint
obt_keyboard_keycode_to_modmask(guint keycode
)
115 if (keycode
== NoSymbol
) return 0;
117 /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
118 for (i
= 0; i
< NUM_MASKS
; ++i
) {
119 /* go through each keycode that is bound to the mask */
120 for (j
= 0; j
< modmap
->max_keypermod
; ++j
) {
121 /* compare with a keycode that is bound to the mask (i) */
122 if (modmap
->modifiermap
[i
*modmap
->max_keypermod
+ j
] == keycode
)
129 guint
obt_keyboard_only_modmasks(guint mask
)
132 /* strip off these lock keys. they shouldn't affect key bindings */
133 mask
&= ~LockMask
; /* use the LockMask, not what capslock is bound to,
134 because you could bind it to something else and it
135 should work as that modifier then. i think capslock
137 mask
&= ~obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_NUMLOCK
);
138 mask
&= ~obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_SCROLLLOCK
);
142 guint
obt_keyboard_modkey_to_modmask(ObtModkeysKey key
)
144 return modkeys_keys
[key
];
147 static void set_modkey_mask(guchar mask
, KeySym sym
)
149 /* find what key this is, and bind it to the mask */
151 if (sym
== XK_Num_Lock
)
152 modkeys_keys
[OBT_KEYBOARD_MODKEY_NUMLOCK
] |= mask
;
153 else if (sym
== XK_Scroll_Lock
)
154 modkeys_keys
[OBT_KEYBOARD_MODKEY_SCROLLLOCK
] |= mask
;
156 else if (sym
== XK_Super_L
&& super_l
)
157 modkeys_keys
[OBT_KEYBOARD_MODKEY_SUPER
] |= mask
;
158 else if (sym
== XK_Super_L
&& !super_l
)
159 /* left takes precident over right, so erase any masks the right
161 modkeys_keys
[OBT_KEYBOARD_MODKEY_SUPER
] = mask
, super_l
= TRUE
;
162 else if (sym
== XK_Super_R
&& !super_l
)
163 modkeys_keys
[OBT_KEYBOARD_MODKEY_SUPER
] |= mask
;
165 else if (sym
== XK_Hyper_L
&& hyper_l
)
166 modkeys_keys
[OBT_KEYBOARD_MODKEY_HYPER
] |= mask
;
167 else if (sym
== XK_Hyper_L
&& !hyper_l
)
168 modkeys_keys
[OBT_KEYBOARD_MODKEY_HYPER
] = mask
, hyper_l
= TRUE
;
169 else if (sym
== XK_Hyper_R
&& !hyper_l
)
170 modkeys_keys
[OBT_KEYBOARD_MODKEY_HYPER
] |= mask
;
172 else if (sym
== XK_Alt_L
&& alt_l
)
173 modkeys_keys
[OBT_KEYBOARD_MODKEY_ALT
] |= mask
;
174 else if (sym
== XK_Alt_L
&& !alt_l
)
175 modkeys_keys
[OBT_KEYBOARD_MODKEY_ALT
] = mask
, alt_l
= TRUE
;
176 else if (sym
== XK_Alt_R
&& !alt_l
)
177 modkeys_keys
[OBT_KEYBOARD_MODKEY_ALT
] |= mask
;
179 else if (sym
== XK_Meta_L
&& meta_l
)
180 modkeys_keys
[OBT_KEYBOARD_MODKEY_META
] |= mask
;
181 else if (sym
== XK_Meta_L
&& !meta_l
)
182 modkeys_keys
[OBT_KEYBOARD_MODKEY_META
] = mask
, meta_l
= TRUE
;
183 else if (sym
== XK_Meta_R
&& !meta_l
)
184 modkeys_keys
[OBT_KEYBOARD_MODKEY_META
] |= mask
;
186 /* CapsLock, Shift, and Control are special and hard-coded */
189 KeyCode
* obt_keyboard_keysym_to_keycode(KeySym sym
)
194 ret
= g_new(KeyCode
, 1);
198 /* go through each keycode and look for the keysym */
199 for (i
= min_keycode
; i
<= max_keycode
; ++i
)
200 for (j
= 0; j
< keysyms_per_keycode
; ++j
)
201 if (sym
== keymap
[(i
-min_keycode
) * keysyms_per_keycode
+ j
]) {
202 ret
= g_renew(KeyCode
, ret
, ++n
);
209 gchar
*obt_keyboard_keycode_to_string(guint keycode
)
213 if ((sym
= XKeycodeToKeysym(obt_display
, keycode
, 0)) != NoSymbol
)
214 return g_locale_to_utf8(XKeysymToString(sym
), -1, NULL
, NULL
, NULL
);
218 gunichar
obt_keyboard_keycode_to_unichar(guint keycode
)
223 if ((key
= obt_keyboard_keycode_to_string(keycode
)) != NULL
&&
224 /* don't accept keys that aren't a single letter, like "space" */
227 unikey
= g_utf8_get_char_validated(key
, -1);
228 if (unikey
== (gunichar
)-1 || unikey
== (gunichar
)-2 || unikey
== 0)