+/* -*- 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>
+
+/* 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 0xf /* 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;
+/* This is a bitmask of the different masks for each modifier key */
+static guchar modkeys_keys[OB_MODKEY_NUM_KEYS];
+
+void modkeys_startup(gboolean reconfigure)
+{
+ /* keycodes for the modifier keys which will be bound to the masks */
+ gint i, j, k;
+
+ modmap = XGetModifierMapping(ob_display);
+ g_assert(modmap->max_keypermod > 0);
+
+ /* reset the keys to not be bound to any masks */
+ for (i = 0; i < OB_MODKEY_NUM_KEYS; ++i)
+ modkeys_keys[i] = 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) {
+ KeySym sym;
+ /* get a keycode that is bound to the mask (i) */
+ KeyCode keycode = modmap->modifiermap[i*modmap->max_keypermod + j];
+ /* go through each keysym bound to the given keycode */
+ for (k = 0; ; ++k) {
+ sym = XKeycodeToKeysym(ob_display, keycode, k);
+ if (sym == NoSymbol) break;
+
+ /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */
+ set_modkey_mask(nth_mask(i), sym);
+ }
+ }
+ }
+}
+
+void modkeys_shutdown(gboolean reconfigure)
+{
+ XFreeModifiermap(modmap);
+}
+
+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 &= ~modkeys_key_to_mask(OB_MODKEY_KEY_CAPSLOCK);
+ 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_Caps_Lock)
+ modkeys_keys[OB_MODKEY_KEY_CAPSLOCK] |= mask;
+ else if (sym == XK_Shift_L || sym == XK_Shift_R)
+ modkeys_keys[OB_MODKEY_KEY_SHIFT] |= mask;
+ else if (sym == XK_Control_L || sym == XK_Control_R)
+ modkeys_keys[OB_MODKEY_KEY_CONTROL] |= mask;
+ else if (sym == XK_Super_L || sym == XK_Super_R)
+ modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask;
+ else if (sym == XK_Hyper_L || sym == XK_Hyper_R)
+ modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask;
+ else if (sym == XK_Alt_L || sym == XK_Alt_R)
+ modkeys_keys[OB_MODKEY_KEY_ALT] |= mask;
+ else if (sym == XK_Meta_L || sym == XK_Meta_R)
+ modkeys_keys[OB_MODKEY_KEY_META] |= mask;
+}