common/xutil.c

   1 /*
   2  * common/xutil.c - X-related useful functions
   3  *
   4  * Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
   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  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include "common/xutil.h"
  23
  24 /* XCB doesn't provide keysyms definition */
  25 #include <X11/keysym.h>
  26
  27 #include <xcb/xcb.h>
  28 #include <xcb/xcb_icccm.h>
  29
  30 /** Get the lock masks (shiftlock, numlock, capslock, modeswitch).
  31  * \param connection The X connection.
  32  * \param cookie The cookie of the request.
  33  * \param keysyms Key symbols.
  34  * \param numlockmask Numlock mask.
  35  * \param shiftlockmask Shiftlock mask.
  36  * \param capslockmask Capslock mask.
  37  * \todo Split this.
  38  */
  39 void
  40 xutil_lock_mask_get(xcb_connection_t *connection,
  41                     xcb_get_modifier_mapping_cookie_t cookie,
  42                     xcb_key_symbols_t *keysyms,
  43                     uint16_t *numlockmask,
  44                     uint16_t *shiftlockmask,
  45                     uint16_t *capslockmask,
  46                     uint16_t *modeswitchmask)
  47 {
  48     xcb_get_modifier_mapping_reply_t *modmap_r;
  49     xcb_keycode_t *modmap, kc;
  50     xcb_keycode_t *numlockcodes = xcb_key_symbols_get_keycode(keysyms, XK_Num_Lock);
  51     xcb_keycode_t *shiftlockcodes = xcb_key_symbols_get_keycode(keysyms, XK_Shift_Lock);
  52     xcb_keycode_t *capslockcodes = xcb_key_symbols_get_keycode(keysyms, XK_Caps_Lock);
  53     xcb_keycode_t *modeswitchcodes = xcb_key_symbols_get_keycode(keysyms, XK_Mode_switch);
  54
  55     modmap_r = xcb_get_modifier_mapping_reply(connection, cookie, NULL);
  56     modmap = xcb_get_modifier_mapping_keycodes(modmap_r);
  57
  58     /* reset */
  59     *numlockmask = *shiftlockmask = *capslockmask = *modeswitchmask = 0;
  60
  61     int i;
  62     for(i = 0; i < 8; i++)
  63         for(int j = 0; j < modmap_r->keycodes_per_modifier; j++)
  64         {
  65             kc = modmap[i * modmap_r->keycodes_per_modifier + j];
  66
  67 #define LOOK_FOR(mask, codes) \
  68             if(*mask == 0 && codes) \
  69                 for(xcb_keycode_t *ktest = codes; *ktest; ktest++) \
  70                     if(*ktest == kc) \
  71                     { \
  72                         *mask = (1 << i); \
  73                         break; \
  74                     }
  75
  76             LOOK_FOR(numlockmask, numlockcodes)
  77             LOOK_FOR(shiftlockmask, shiftlockcodes)
  78             LOOK_FOR(capslockmask, capslockcodes)
  79             LOOK_FOR(modeswitchmask, modeswitchcodes)
  80 #undef LOOK_FOR
  81         }
  82     p_delete(&numlockcodes);
  83     p_delete(&shiftlockcodes);
  84     p_delete(&capslockcodes);
  85     p_delete(&modeswitchcodes);
  86     p_delete(&modmap_r);
  87 }
  88
  89 uint16_t
  90 xutil_key_mask_fromstr(const char *keyname)
  91 {
  92     if (A_STREQ(keyname, "Shift"))
  93       return XCB_MOD_MASK_SHIFT;
  94     if (A_STREQ(keyname, "Lock"))
  95       return XCB_MOD_MASK_LOCK;
  96     if (A_STREQ(keyname, "Ctrl") || A_STREQ(keyname, "Control"))
  97       return XCB_MOD_MASK_CONTROL;
  98     if (A_STREQ(keyname, "Mod1"))
  99       return XCB_MOD_MASK_1;
 100     if(A_STREQ(keyname, "Mod2"))
 101       return XCB_MOD_MASK_2;
 102     if(A_STREQ(keyname, "Mod3"))
 103       return XCB_MOD_MASK_3;
 104     if(A_STREQ(keyname, "Mod4"))
 105       return XCB_MOD_MASK_4;
 106     if(A_STREQ(keyname, "Mod5"))
 107       return XCB_MOD_MASK_5;
 108     if(A_STREQ(keyname, "Any"))
 109       /* this is misnamed but correct */
 110       return XCB_BUTTON_MASK_ANY;
 111     return XCB_NO_SYMBOL;
 112 }
 113
 114 void
 115 xutil_key_mask_tostr(uint16_t mask, const char **name, size_t *len)
 116 {
 117     switch(mask)
 118     {
 119 #define SET_RESULT(res) \
 120         *name = #res; \
 121         *len = sizeof(#res) - 1; \
 122         return;
 123       case XCB_MOD_MASK_SHIFT:   SET_RESULT(Shift)
 124       case XCB_MOD_MASK_LOCK:    SET_RESULT(Lock)
 125       case XCB_MOD_MASK_CONTROL: SET_RESULT(Control)
 126       case XCB_MOD_MASK_1:       SET_RESULT(Mod1)
 127       case XCB_MOD_MASK_2:       SET_RESULT(Mod2)
 128       case XCB_MOD_MASK_3:       SET_RESULT(Mod3)
 129       case XCB_MOD_MASK_4:       SET_RESULT(Mod4)
 130       case XCB_MOD_MASK_5:       SET_RESULT(Mod5)
 131       case XCB_BUTTON_MASK_ANY:  SET_RESULT(Any)
 132       default:                   SET_RESULT(Unknown)
 133 #undef SET_RESULT
 134     }
 135 }
 136
 137 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80