openbox/modkeys.c (raw)
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/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*- modkeys.c for the Openbox window manager Copyright (c) 2007 Dana Jansens This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. See the COPYING file for a copy of the GNU General Public License. */ #include "modkeys.h" #include "openbox.h" #include <X11/Xlib.h> #include <X11/keysym.h> /* These masks are constants and the modifier keys are bound to them as anyone sees fit: ShiftMask (1<<0), LockMask (1<<1), ControlMask (1<<2), Mod1Mask (1<<3), Mod2Mask (1<<4), Mod3Mask (1<<5), Mod4Mask (1<<6), Mod5Mask (1<<7) */ #define NUM_MASKS 8 #define ALL_MASKS 0xff /* an or'ing of all 8 keyboard masks */ /* Get the bitflag for the n'th modifier mask */ #define nth_mask(n) (1 << n) static void set_modkey_mask(guchar mask, KeySym sym); static XModifierKeymap *modmap; static KeySym *keymap; static gint min_keycode, max_keycode, keysyms_per_keycode; /* This is a bitmask of the different masks for each modifier key */ static guchar modkeys_keys[OB_MODKEY_NUM_KEYS]; static gboolean alt_l = FALSE; static gboolean meta_l = FALSE; static gboolean super_l = FALSE; static gboolean hyper_l = FALSE; void modkeys_startup(gboolean reconfigure) { gint i, j, k; /* reset the keys to not be bound to any masks */ for (i = 0; i < OB_MODKEY_NUM_KEYS; ++i) modkeys_keys[i] = 0; modmap = XGetModifierMapping(ob_display); g_assert(modmap->max_keypermod > 0); XDisplayKeycodes(ob_display, &min_keycode, &max_keycode); keymap = XGetKeyboardMapping(ob_display, min_keycode, max_keycode - min_keycode + 1, &keysyms_per_keycode); alt_l = meta_l = super_l = hyper_l = FALSE; /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */ for (i = 0; i < NUM_MASKS; ++i) { /* go through each keycode that is bound to the mask */ for (j = 0; j < modmap->max_keypermod; ++j) { KeySym sym; /* get a keycode that is bound to the mask (i) */ KeyCode keycode = modmap->modifiermap[i*modmap->max_keypermod + j]; if (keycode) { /* go through each keysym bound to the given keycode */ for (k = 0; k < keysyms_per_keycode; ++k) { sym = keymap[(keycode-min_keycode) * keysyms_per_keycode + k]; if (sym != NoSymbol) { /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */ set_modkey_mask(nth_mask(i), sym); } } } } } /* CapsLock, Shift, and Control are special and hard-coded */ modkeys_keys[OB_MODKEY_KEY_CAPSLOCK] = LockMask; modkeys_keys[OB_MODKEY_KEY_SHIFT] = ShiftMask; modkeys_keys[OB_MODKEY_KEY_CONTROL] = ControlMask; } void modkeys_shutdown(gboolean reconfigure) { XFreeModifiermap(modmap); XFree(keymap); } guint modkeys_keycode_to_mask(guint keycode) { gint i, j; guint mask = 0; if (keycode == NoSymbol) return 0; /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */ for (i = 0; i < NUM_MASKS; ++i) { /* go through each keycode that is bound to the mask */ for (j = 0; j < modmap->max_keypermod; ++j) { /* compare with a keycode that is bound to the mask (i) */ if (modmap->modifiermap[i*modmap->max_keypermod + j] == keycode) mask |= nth_mask(i); } } return mask; } guint modkeys_only_modifier_masks(guint mask) { mask &= ALL_MASKS; /* strip off these lock keys. they shouldn't affect key bindings */ mask &= ~LockMask; /* use the LockMask, not what capslock is bound to, because you could bind it to something else and it should work as that modifier then. i think capslock is weird in xkb. */ mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_NUMLOCK); mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_SCROLLLOCK); return mask; } guint modkeys_key_to_mask(ObModkeysKey key) { return modkeys_keys[key]; } static void set_modkey_mask(guchar mask, KeySym sym) { /* find what key this is, and bind it to the mask */ if (sym == XK_Num_Lock) modkeys_keys[OB_MODKEY_KEY_NUMLOCK] |= mask; else if (sym == XK_Scroll_Lock) modkeys_keys[OB_MODKEY_KEY_SCROLLLOCK] |= mask; else if (sym == XK_Super_L && super_l) modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask; else if (sym == XK_Super_L && !super_l) /* left takes precident over right, so erase any masks the right key may have set */ modkeys_keys[OB_MODKEY_KEY_SUPER] = mask, super_l = TRUE; else if (sym == XK_Super_R && !super_l) modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask; else if (sym == XK_Hyper_L && hyper_l) modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask; else if (sym == XK_Hyper_L && !hyper_l) modkeys_keys[OB_MODKEY_KEY_HYPER] = mask, hyper_l = TRUE; else if (sym == XK_Hyper_R && !hyper_l) modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask; else if (sym == XK_Alt_L && alt_l) modkeys_keys[OB_MODKEY_KEY_ALT] |= mask; else if (sym == XK_Alt_L && !alt_l) modkeys_keys[OB_MODKEY_KEY_ALT] = mask, alt_l = TRUE; else if (sym == XK_Alt_R && !alt_l) modkeys_keys[OB_MODKEY_KEY_ALT] |= mask; else if (sym == XK_Meta_L && meta_l) modkeys_keys[OB_MODKEY_KEY_META] |= mask; else if (sym == XK_Meta_L && !meta_l) modkeys_keys[OB_MODKEY_KEY_META] = mask, meta_l = TRUE; else if (sym == XK_Meta_R && !meta_l) modkeys_keys[OB_MODKEY_KEY_META] |= mask; /* CapsLock, Shift, and Control are special and hard-coded */ } KeyCode modkeys_sym_to_code(KeySym sym) { gint i, j; /* go through each keycode and look for the keysym */ for (i = min_keycode; i <= max_keycode; ++i) for (j = 0; j < keysyms_per_keycode; ++j) if (sym == keymap[(i-min_keycode) * keysyms_per_keycode + j]) return i; return 0; } |