Dogcows Code - chaz/openbox/blob - openbox/modkeys.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    modkeys.c for the Openbox window manager
   4    Copyright (c) 2007        Dana Jansens
   5
   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.
  10
  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.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "modkeys.h"
  20 #include "openbox.h"
  21
  22 #include <X11/Xlib.h>
  23
  24 /* These masks are constants and the modifier keys are bound to them as
  25    anyone sees fit:
  26         ShiftMask (1<<0), LockMask (1<<1), ControlMask (1<<2), Mod1Mask (1<<3),
  27         Mod2Mask (1<<4), Mod3Mask (1<<5), Mod4Mask (1<<6), Mod5Mask (1<<7)
  28 */
  29 #define NUM_MASKS 8
  30 #define ALL_MASKS 0xf /* an or'ing of all 8 keyboard masks */
  31
  32 /* Get the bitflag for the n'th modifier mask */
  33 #define nth_mask(n) (1 << n)
  34
  35 static void set_modkey_mask(guchar mask, KeySym sym);
  36
  37 static XModifierKeymap *modmap;
  38 /* This is a bitmask of the different masks for each modifier key */
  39 static guchar modkeys_keys[OB_MODKEY_NUM_KEYS];
  40
  41 void modkeys_startup(gboolean reconfigure)
  42 {
  43     /* keycodes for the modifier keys which will be bound to the masks */
  44     gint i, j, k;
  45
  46     modmap = XGetModifierMapping(ob_display);
  47     g_assert(modmap->max_keypermod > 0);
  48
  49     /* reset the keys to not be bound to any masks */
  50     for (i = 0; i < OB_MODKEY_NUM_KEYS; ++i)
  51         modkeys_keys[i] = 0;
  52
  53     /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
  54     for (i = 0; i < NUM_MASKS; ++i) {
  55         /* go through each keycode that is bound to the mask */
  56         for (j = 0; j < modmap->max_keypermod; ++j) {
  57             KeySym sym;
  58             /* get a keycode that is bound to the mask (i) */
  59             KeyCode keycode = modmap->modifiermap[i*modmap->max_keypermod + j];
  60             /* go through each keysym bound to the given keycode */
  61             for (k = 0; ; ++k) {
  62                 sym = XKeycodeToKeysym(ob_display, keycode, k);
  63                 if (sym == NoSymbol) break;
  64
  65                 /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */
  66                 set_modkey_mask(nth_mask(i), sym);
  67             }
  68         }
  69     }
  70 }
  71
  72 void modkeys_shutdown(gboolean reconfigure)
  73 {
  74     XFreeModifiermap(modmap);
  75 }
  76
  77 guint modkeys_keycode_to_mask(guint keycode)
  78 {
  79     gint i, j;
  80     guint mask = 0;
  81
  82     if (keycode == NoSymbol) return 0;
  83
  84     /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
  85     for (i = 0; i < NUM_MASKS; ++i) {
  86         /* go through each keycode that is bound to the mask */
  87         for (j = 0; j < modmap->max_keypermod; ++j) {
  88             /* compare with a keycode that is bound to the mask (i) */
  89             if (modmap->modifiermap[i*modmap->max_keypermod + j] == keycode)
  90                 mask |= nth_mask(i);
  91         }
  92     }
  93     return mask;
  94 }
  95
  96 guint modkeys_only_modifier_masks(guint mask)
  97 {
  98     mask &= ALL_MASKS;
  99     /* strip off these lock keys. they shouldn't affect key bindings */
 100     mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_CAPSLOCK);
 101     mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_NUMLOCK);
 102     mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_SCROLLLOCK);
 103     return mask;
 104 }
 105
 106 guint modkeys_key_to_mask(ObModkeysKey key)
 107 {
 108     return modkeys_keys[key];
 109 }
 110
 111 static void set_modkey_mask(guchar mask, KeySym sym)
 112 {
 113     /* find what key this is, and bind it to the mask */
 114
 115     if (sym == XK_Num_Lock)
 116         modkeys_keys[OB_MODKEY_KEY_NUMLOCK] |= mask;
 117     else if (sym == XK_Scroll_Lock)
 118         modkeys_keys[OB_MODKEY_KEY_SCROLLLOCK] |= mask;
 119     else if (sym == XK_Caps_Lock)
 120         modkeys_keys[OB_MODKEY_KEY_CAPSLOCK] |= mask;
 121     else if (sym == XK_Shift_L || sym == XK_Shift_R)
 122         modkeys_keys[OB_MODKEY_KEY_SHIFT] |= mask;
 123     else if (sym == XK_Control_L || sym == XK_Control_R)
 124         modkeys_keys[OB_MODKEY_KEY_CONTROL] |= mask;
 125     else if (sym == XK_Super_L || sym == XK_Super_R)
 126         modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask;
 127     else if (sym == XK_Hyper_L || sym == XK_Hyper_R)
 128         modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask;
 129     else if (sym == XK_Alt_L || sym == XK_Alt_R)
 130         modkeys_keys[OB_MODKEY_KEY_ALT] |= mask;
 131     else if (sym == XK_Meta_L || sym == XK_Meta_R)
 132         modkeys_keys[OB_MODKEY_KEY_META] |= mask;
 133 }