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 0xff /* 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     KeySym *keymap;
  44     gint i, j, k;
  45     gint min_keycode, max_keycode, keysyms_per_keycode;
  46
  47     /* reset the keys to not be bound to any masks */
  48     for (i = 0; i < OB_MODKEY_NUM_KEYS; ++i)
  49         modkeys_keys[i] = 0;
  50
  51     modmap = XGetModifierMapping(ob_display);
  52     g_assert(modmap->max_keypermod > 0);
  53
  54     XDisplayKeycodes(ob_display, &min_keycode, &max_keycode);
  55     keymap = XGetKeyboardMapping(ob_display, min_keycode,
  56                                  max_keycode - min_keycode + 1,
  57                                  &keysyms_per_keycode);
  58
  59     /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
  60     for (i = 0; i < NUM_MASKS; ++i) {
  61         /* go through each keycode that is bound to the mask */
  62         for (j = 0; j < modmap->max_keypermod; ++j) {
  63             KeySym sym;
  64             /* get a keycode that is bound to the mask (i) */
  65             KeyCode keycode = modmap->modifiermap[i*modmap->max_keypermod + j];
  66             /* go through each keysym bound to the given keycode */
  67             for (k = 0; k < keysyms_per_keycode; ++k) {
  68                 sym = keymap[(keycode-min_keycode) * keysyms_per_keycode + k];
  69                 if (sym != NoSymbol) {
  70                     /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */
  71                     set_modkey_mask(nth_mask(i), sym);
  72                 }
  73             }
  74         }
  75     }
  76     XFree(keymap);
  77 }
  78
  79 void modkeys_shutdown(gboolean reconfigure)
  80 {
  81     XFreeModifiermap(modmap);
  82 }
  83
  84 guint modkeys_keycode_to_mask(guint keycode)
  85 {
  86     gint i, j;
  87     guint mask = 0;
  88
  89     if (keycode == NoSymbol) return 0;
  90
  91     /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
  92     for (i = 0; i < NUM_MASKS; ++i) {
  93         /* go through each keycode that is bound to the mask */
  94         for (j = 0; j < modmap->max_keypermod; ++j) {
  95             /* compare with a keycode that is bound to the mask (i) */
  96             if (modmap->modifiermap[i*modmap->max_keypermod + j] == keycode)
  97                 mask |= nth_mask(i);
  98         }
  99     }
 100     return mask;
 101 }
 102
 103 guint modkeys_only_modifier_masks(guint mask)
 104 {
 105     mask &= ALL_MASKS;
 106     /* strip off these lock keys. they shouldn't affect key bindings */
 107     mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_CAPSLOCK);
 108     mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_NUMLOCK);
 109     mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_SCROLLLOCK);
 110     return mask;
 111 }
 112
 113 guint modkeys_key_to_mask(ObModkeysKey key)
 114 {
 115     return modkeys_keys[key];
 116 }
 117
 118 static void set_modkey_mask(guchar mask, KeySym sym)
 119 {
 120     /* find what key this is, and bind it to the mask */
 121
 122     if (sym == XK_Num_Lock)
 123         modkeys_keys[OB_MODKEY_KEY_NUMLOCK] |= mask;
 124     else if (sym == XK_Scroll_Lock)
 125         modkeys_keys[OB_MODKEY_KEY_SCROLLLOCK] |= mask;
 126     else if (sym == XK_Caps_Lock)
 127         modkeys_keys[OB_MODKEY_KEY_CAPSLOCK] |= mask;
 128     else if (sym == XK_Shift_L || sym == XK_Shift_R)
 129         modkeys_keys[OB_MODKEY_KEY_SHIFT] |= mask;
 130     else if (sym == XK_Control_L || sym == XK_Control_R)
 131         modkeys_keys[OB_MODKEY_KEY_CONTROL] |= mask;
 132     else if (sym == XK_Super_L || sym == XK_Super_R)
 133         modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask;
 134     else if (sym == XK_Hyper_L || sym == XK_Hyper_R)
 135         modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask;
 136     else if (sym == XK_Alt_L || sym == XK_Alt_R)
 137         modkeys_keys[OB_MODKEY_KEY_ALT] |= mask;
 138     else if (sym == XK_Meta_L || sym == XK_Meta_R)
 139         modkeys_keys[OB_MODKEY_KEY_META] |= mask;
 140 }