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