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authorStefano Karapetsas <[email protected]>2012-07-04 18:01:12 +0200
committerStefano Karapetsas <[email protected]>2012-07-04 18:01:12 +0200
commite48fc61bf4cf43a90b7ddf16e3cbb3b247333c89 (patch)
tree15722913e64320b18a09b2452d0a382ebeb953e9 /maximus/eggaccelerators.c
downloadmate-netbook-e48fc61bf4cf43a90b7ddf16e3cbb3b247333c89.tar.bz2
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Initial release
Diffstat (limited to 'maximus/eggaccelerators.c')
-rw-r--r--maximus/eggaccelerators.c656
1 files changed, 656 insertions, 0 deletions
diff --git a/maximus/eggaccelerators.c b/maximus/eggaccelerators.c
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+/* eggaccelerators.c
+ * Copyright (C) 2002 Red Hat, Inc.; Copyright 1998, 2001 Tim Janik
+ * Developed by Havoc Pennington, Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ */
+
+#include "eggaccelerators.h"
+
+#include <string.h>
+#include <gdk/gdkx.h>
+#include <gdk/gdkkeysyms.h>
+
+enum
+{
+ EGG_MODMAP_ENTRY_SHIFT = 0,
+ EGG_MODMAP_ENTRY_LOCK = 1,
+ EGG_MODMAP_ENTRY_CONTROL = 2,
+ EGG_MODMAP_ENTRY_MOD1 = 3,
+ EGG_MODMAP_ENTRY_MOD2 = 4,
+ EGG_MODMAP_ENTRY_MOD3 = 5,
+ EGG_MODMAP_ENTRY_MOD4 = 6,
+ EGG_MODMAP_ENTRY_MOD5 = 7,
+ EGG_MODMAP_ENTRY_LAST = 8
+};
+
+#define MODMAP_ENTRY_TO_MODIFIER(x) (1 << (x))
+
+typedef struct
+{
+ EggVirtualModifierType mapping[EGG_MODMAP_ENTRY_LAST];
+
+} EggModmap;
+
+const EggModmap* egg_keymap_get_modmap (GdkKeymap *keymap);
+
+static inline gboolean
+is_alt (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'a' || string[1] == 'A') &&
+ (string[2] == 'l' || string[2] == 'L') &&
+ (string[3] == 't' || string[3] == 'T') &&
+ (string[4] == '>'));
+}
+
+static inline gboolean
+is_ctl (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'c' || string[1] == 'C') &&
+ (string[2] == 't' || string[2] == 'T') &&
+ (string[3] == 'l' || string[3] == 'L') &&
+ (string[4] == '>'));
+}
+
+static inline gboolean
+is_modx (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'm' || string[1] == 'M') &&
+ (string[2] == 'o' || string[2] == 'O') &&
+ (string[3] == 'd' || string[3] == 'D') &&
+ (string[4] >= '1' && string[4] <= '5') &&
+ (string[5] == '>'));
+}
+
+static inline gboolean
+is_ctrl (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'c' || string[1] == 'C') &&
+ (string[2] == 't' || string[2] == 'T') &&
+ (string[3] == 'r' || string[3] == 'R') &&
+ (string[4] == 'l' || string[4] == 'L') &&
+ (string[5] == '>'));
+}
+
+static inline gboolean
+is_shft (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 's' || string[1] == 'S') &&
+ (string[2] == 'h' || string[2] == 'H') &&
+ (string[3] == 'f' || string[3] == 'F') &&
+ (string[4] == 't' || string[4] == 'T') &&
+ (string[5] == '>'));
+}
+
+static inline gboolean
+is_shift (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 's' || string[1] == 'S') &&
+ (string[2] == 'h' || string[2] == 'H') &&
+ (string[3] == 'i' || string[3] == 'I') &&
+ (string[4] == 'f' || string[4] == 'F') &&
+ (string[5] == 't' || string[5] == 'T') &&
+ (string[6] == '>'));
+}
+
+static inline gboolean
+is_control (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'c' || string[1] == 'C') &&
+ (string[2] == 'o' || string[2] == 'O') &&
+ (string[3] == 'n' || string[3] == 'N') &&
+ (string[4] == 't' || string[4] == 'T') &&
+ (string[5] == 'r' || string[5] == 'R') &&
+ (string[6] == 'o' || string[6] == 'O') &&
+ (string[7] == 'l' || string[7] == 'L') &&
+ (string[8] == '>'));
+}
+
+static inline gboolean
+is_release (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'r' || string[1] == 'R') &&
+ (string[2] == 'e' || string[2] == 'E') &&
+ (string[3] == 'l' || string[3] == 'L') &&
+ (string[4] == 'e' || string[4] == 'E') &&
+ (string[5] == 'a' || string[5] == 'A') &&
+ (string[6] == 's' || string[6] == 'S') &&
+ (string[7] == 'e' || string[7] == 'E') &&
+ (string[8] == '>'));
+}
+
+static inline gboolean
+is_meta (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'm' || string[1] == 'M') &&
+ (string[2] == 'e' || string[2] == 'E') &&
+ (string[3] == 't' || string[3] == 'T') &&
+ (string[4] == 'a' || string[4] == 'A') &&
+ (string[5] == '>'));
+}
+
+static inline gboolean
+is_super (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 's' || string[1] == 'S') &&
+ (string[2] == 'u' || string[2] == 'U') &&
+ (string[3] == 'p' || string[3] == 'P') &&
+ (string[4] == 'e' || string[4] == 'E') &&
+ (string[5] == 'r' || string[5] == 'R') &&
+ (string[6] == '>'));
+}
+
+static inline gboolean
+is_hyper (const gchar *string)
+{
+ return ((string[0] == '<') &&
+ (string[1] == 'h' || string[1] == 'H') &&
+ (string[2] == 'y' || string[2] == 'Y') &&
+ (string[3] == 'p' || string[3] == 'P') &&
+ (string[4] == 'e' || string[4] == 'E') &&
+ (string[5] == 'r' || string[5] == 'R') &&
+ (string[6] == '>'));
+}
+
+/**
+ * egg_accelerator_parse_virtual:
+ * @accelerator: string representing an accelerator
+ * @accelerator_key: return location for accelerator keyval
+ * @accelerator_mods: return location for accelerator modifier mask
+ *
+ * Parses a string representing a virtual accelerator. The format
+ * looks like "&lt;Control&gt;a" or "&lt;Shift&gt;&lt;Alt&gt;F1" or
+ * "&lt;Release&gt;z" (the last one is for key release). The parser
+ * is fairly liberal and allows lower or upper case, and also
+ * abbreviations such as "&lt;Ctl&gt;" and "&lt;Ctrl&gt;".
+ *
+ * If the parse fails, @accelerator_key and @accelerator_mods will
+ * be set to 0 (zero) and %FALSE will be returned. If the string contains
+ * only modifiers, @accelerator_key will be set to 0 but %TRUE will be
+ * returned.
+ *
+ * The virtual vs. concrete accelerator distinction is a relic of
+ * how the X Window System works; there are modifiers Mod2-Mod5 that
+ * can represent various keyboard keys (numlock, meta, hyper, etc.),
+ * the virtual modifier represents the keyboard key, the concrete
+ * modifier the actual Mod2-Mod5 bits in the key press event.
+ *
+ * Returns: %TRUE on success.
+ */
+gboolean
+egg_accelerator_parse_virtual (const gchar *accelerator,
+ guint *accelerator_key,
+ EggVirtualModifierType *accelerator_mods)
+{
+ guint keyval;
+ GdkModifierType mods;
+ gint len;
+ gboolean bad_keyval;
+
+ if (accelerator_key)
+ *accelerator_key = 0;
+ if (accelerator_mods)
+ *accelerator_mods = 0;
+
+ g_return_val_if_fail (accelerator != NULL, FALSE);
+
+ bad_keyval = FALSE;
+
+ keyval = 0;
+ mods = 0;
+ len = strlen (accelerator);
+ while (len)
+ {
+ if (*accelerator == '<')
+ {
+ if (len >= 9 && is_release (accelerator))
+ {
+ accelerator += 9;
+ len -= 9;
+ mods |= EGG_VIRTUAL_RELEASE_MASK;
+ }
+ else if (len >= 9 && is_control (accelerator))
+ {
+ accelerator += 9;
+ len -= 9;
+ mods |= EGG_VIRTUAL_CONTROL_MASK;
+ }
+ else if (len >= 7 && is_shift (accelerator))
+ {
+ accelerator += 7;
+ len -= 7;
+ mods |= EGG_VIRTUAL_SHIFT_MASK;
+ }
+ else if (len >= 6 && is_shft (accelerator))
+ {
+ accelerator += 6;
+ len -= 6;
+ mods |= EGG_VIRTUAL_SHIFT_MASK;
+ }
+ else if (len >= 6 && is_ctrl (accelerator))
+ {
+ accelerator += 6;
+ len -= 6;
+ mods |= EGG_VIRTUAL_CONTROL_MASK;
+ }
+ else if (len >= 6 && is_modx (accelerator))
+ {
+ static const guint mod_vals[] = {
+ EGG_VIRTUAL_ALT_MASK, EGG_VIRTUAL_MOD2_MASK, EGG_VIRTUAL_MOD3_MASK,
+ EGG_VIRTUAL_MOD4_MASK, EGG_VIRTUAL_MOD5_MASK
+ };
+
+ len -= 6;
+ accelerator += 4;
+ mods |= mod_vals[*accelerator - '1'];
+ accelerator += 2;
+ }
+ else if (len >= 5 && is_ctl (accelerator))
+ {
+ accelerator += 5;
+ len -= 5;
+ mods |= EGG_VIRTUAL_CONTROL_MASK;
+ }
+ else if (len >= 5 && is_alt (accelerator))
+ {
+ accelerator += 5;
+ len -= 5;
+ mods |= EGG_VIRTUAL_ALT_MASK;
+ }
+ else if (len >= 6 && is_meta (accelerator))
+ {
+ accelerator += 6;
+ len -= 6;
+ mods |= EGG_VIRTUAL_META_MASK;
+ }
+ else if (len >= 7 && is_hyper (accelerator))
+ {
+ accelerator += 7;
+ len -= 7;
+ mods |= EGG_VIRTUAL_HYPER_MASK;
+ }
+ else if (len >= 7 && is_super (accelerator))
+ {
+ accelerator += 7;
+ len -= 7;
+ mods |= EGG_VIRTUAL_SUPER_MASK;
+ }
+ else
+ {
+ gchar last_ch;
+
+ last_ch = *accelerator;
+ while (last_ch && last_ch != '>')
+ {
+ last_ch = *accelerator;
+ accelerator += 1;
+ len -= 1;
+ }
+ }
+ }
+ else
+ {
+ keyval = gdk_keyval_from_name (accelerator);
+
+ if (keyval == 0)
+ bad_keyval = TRUE;
+
+ accelerator += len;
+ len -= len;
+ }
+ }
+
+ if (accelerator_key)
+ *accelerator_key = gdk_keyval_to_lower (keyval);
+ if (accelerator_mods)
+ *accelerator_mods = mods;
+
+ return !bad_keyval;
+}
+
+
+/**
+ * egg_virtual_accelerator_name:
+ * @accelerator_key: accelerator keyval
+ * @accelerator_mods: accelerator modifier mask
+ * @returns: a newly-allocated accelerator name
+ *
+ * Converts an accelerator keyval and modifier mask
+ * into a string parseable by egg_accelerator_parse_virtual().
+ * For example, if you pass in #GDK_q and #EGG_VIRTUAL_CONTROL_MASK,
+ * this function returns "&lt;Control&gt;q".
+ *
+ * The caller of this function must free the returned string.
+ */
+gchar*
+egg_virtual_accelerator_name (guint accelerator_key,
+ EggVirtualModifierType accelerator_mods)
+{
+ static const gchar text_release[] = "<Release>";
+ static const gchar text_shift[] = "<Shift>";
+ static const gchar text_control[] = "<Control>";
+ static const gchar text_mod1[] = "<Alt>";
+ static const gchar text_mod2[] = "<Mod2>";
+ static const gchar text_mod3[] = "<Mod3>";
+ static const gchar text_mod4[] = "<Mod4>";
+ static const gchar text_mod5[] = "<Mod5>";
+ static const gchar text_meta[] = "<Meta>";
+ static const gchar text_super[] = "<Super>";
+ static const gchar text_hyper[] = "<Hyper>";
+ guint l;
+ gchar *keyval_name;
+ gchar *accelerator;
+
+ accelerator_mods &= EGG_VIRTUAL_MODIFIER_MASK;
+
+ keyval_name = gdk_keyval_name (gdk_keyval_to_lower (accelerator_key));
+ if (!keyval_name)
+ keyval_name = "";
+
+ l = 0;
+ if (accelerator_mods & EGG_VIRTUAL_RELEASE_MASK)
+ l += sizeof (text_release) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_SHIFT_MASK)
+ l += sizeof (text_shift) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_CONTROL_MASK)
+ l += sizeof (text_control) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_ALT_MASK)
+ l += sizeof (text_mod1) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_MOD2_MASK)
+ l += sizeof (text_mod2) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_MOD3_MASK)
+ l += sizeof (text_mod3) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_MOD4_MASK)
+ l += sizeof (text_mod4) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_MOD5_MASK)
+ l += sizeof (text_mod5) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_META_MASK)
+ l += sizeof (text_meta) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_HYPER_MASK)
+ l += sizeof (text_hyper) - 1;
+ if (accelerator_mods & EGG_VIRTUAL_SUPER_MASK)
+ l += sizeof (text_super) - 1;
+ l += strlen (keyval_name);
+
+ accelerator = g_new (gchar, l + 1);
+
+ l = 0;
+ accelerator[l] = 0;
+ if (accelerator_mods & EGG_VIRTUAL_RELEASE_MASK)
+ {
+ strcpy (accelerator + l, text_release);
+ l += sizeof (text_release) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_SHIFT_MASK)
+ {
+ strcpy (accelerator + l, text_shift);
+ l += sizeof (text_shift) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_CONTROL_MASK)
+ {
+ strcpy (accelerator + l, text_control);
+ l += sizeof (text_control) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_ALT_MASK)
+ {
+ strcpy (accelerator + l, text_mod1);
+ l += sizeof (text_mod1) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_MOD2_MASK)
+ {
+ strcpy (accelerator + l, text_mod2);
+ l += sizeof (text_mod2) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_MOD3_MASK)
+ {
+ strcpy (accelerator + l, text_mod3);
+ l += sizeof (text_mod3) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_MOD4_MASK)
+ {
+ strcpy (accelerator + l, text_mod4);
+ l += sizeof (text_mod4) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_MOD5_MASK)
+ {
+ strcpy (accelerator + l, text_mod5);
+ l += sizeof (text_mod5) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_META_MASK)
+ {
+ strcpy (accelerator + l, text_meta);
+ l += sizeof (text_meta) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_HYPER_MASK)
+ {
+ strcpy (accelerator + l, text_hyper);
+ l += sizeof (text_hyper) - 1;
+ }
+ if (accelerator_mods & EGG_VIRTUAL_SUPER_MASK)
+ {
+ strcpy (accelerator + l, text_super);
+ l += sizeof (text_super) - 1;
+ }
+
+ strcpy (accelerator + l, keyval_name);
+
+ return accelerator;
+}
+
+void
+egg_keymap_resolve_virtual_modifiers (GdkKeymap *keymap,
+ EggVirtualModifierType virtual_mods,
+ GdkModifierType *concrete_mods)
+{
+ GdkModifierType concrete;
+ int i;
+ const EggModmap *modmap;
+
+ g_return_if_fail (GDK_IS_KEYMAP (keymap));
+ g_return_if_fail (concrete_mods != NULL);
+
+ modmap = egg_keymap_get_modmap (keymap);
+
+ /* Not so sure about this algorithm. */
+
+ concrete = 0;
+ i = 0;
+ while (i < EGG_MODMAP_ENTRY_LAST)
+ {
+ if (modmap->mapping[i] & virtual_mods)
+ concrete |= (1 << i);
+
+ ++i;
+ }
+
+ *concrete_mods = concrete;
+}
+
+void
+egg_keymap_virtualize_modifiers (GdkKeymap *keymap,
+ GdkModifierType concrete_mods,
+ EggVirtualModifierType *virtual_mods)
+{
+ GdkModifierType virtual;
+ int i;
+ const EggModmap *modmap;
+
+ g_return_if_fail (GDK_IS_KEYMAP (keymap));
+ g_return_if_fail (virtual_mods != NULL);
+
+ modmap = egg_keymap_get_modmap (keymap);
+
+ /* Not so sure about this algorithm. */
+
+ virtual = 0;
+ i = 0;
+ while (i < EGG_MODMAP_ENTRY_LAST)
+ {
+ if ((1 << i) & concrete_mods)
+ {
+ EggVirtualModifierType cleaned;
+
+ cleaned = modmap->mapping[i] & ~(EGG_VIRTUAL_MOD2_MASK |
+ EGG_VIRTUAL_MOD3_MASK |
+ EGG_VIRTUAL_MOD4_MASK |
+ EGG_VIRTUAL_MOD5_MASK);
+
+ if (cleaned != 0)
+ {
+ virtual |= cleaned;
+ }
+ else
+ {
+ /* Rather than dropping mod2->mod5 if not bound,
+ * go ahead and use the concrete names
+ */
+ virtual |= modmap->mapping[i];
+ }
+ }
+
+ ++i;
+ }
+
+ *virtual_mods = virtual;
+}
+
+static void
+reload_modmap (GdkKeymap *keymap,
+ EggModmap *modmap)
+{
+ XModifierKeymap *xmodmap;
+ int map_size;
+ int i;
+
+ /* FIXME multihead */
+ xmodmap = XGetModifierMapping (gdk_x11_get_default_xdisplay ());
+
+ memset (modmap->mapping, 0, sizeof (modmap->mapping));
+
+ /* there are 8 modifiers, and the first 3 are shift, shift lock,
+ * and control
+ */
+ map_size = 8 * xmodmap->max_keypermod;
+ i = 3 * xmodmap->max_keypermod;
+ while (i < map_size)
+ {
+ /* get the key code at this point in the map,
+ * see if its keysym is one we're interested in
+ */
+ int keycode = xmodmap->modifiermap[i];
+ GdkKeymapKey *keys;
+ guint *keyvals;
+ int n_entries;
+ int j;
+ EggVirtualModifierType mask;
+
+ keys = NULL;
+ keyvals = NULL;
+ n_entries = 0;
+
+ gdk_keymap_get_entries_for_keycode (keymap,
+ keycode,
+ &keys, &keyvals, &n_entries);
+
+ mask = 0;
+ j = 0;
+ while (j < n_entries)
+ {
+ if (keyvals[j] == GDK_Num_Lock)
+ mask |= EGG_VIRTUAL_NUM_LOCK_MASK;
+ else if (keyvals[j] == GDK_Scroll_Lock)
+ mask |= EGG_VIRTUAL_SCROLL_LOCK_MASK;
+ else if (keyvals[j] == GDK_Meta_L ||
+ keyvals[j] == GDK_Meta_R)
+ mask |= EGG_VIRTUAL_META_MASK;
+ else if (keyvals[j] == GDK_Hyper_L ||
+ keyvals[j] == GDK_Hyper_R)
+ mask |= EGG_VIRTUAL_HYPER_MASK;
+ else if (keyvals[j] == GDK_Super_L ||
+ keyvals[j] == GDK_Super_R)
+ mask |= EGG_VIRTUAL_SUPER_MASK;
+ else if (keyvals[j] == GDK_Mode_switch)
+ mask |= EGG_VIRTUAL_MODE_SWITCH_MASK;
+
+ ++j;
+ }
+
+ /* Mod1Mask is 1 << 3 for example, i.e. the
+ * fourth modifier, i / keyspermod is the modifier
+ * index
+ */
+ modmap->mapping[i/xmodmap->max_keypermod] |= mask;
+
+ g_free (keyvals);
+ g_free (keys);
+
+ ++i;
+ }
+
+ /* Add in the not-really-virtual fixed entries */
+ modmap->mapping[EGG_MODMAP_ENTRY_SHIFT] |= EGG_VIRTUAL_SHIFT_MASK;
+ modmap->mapping[EGG_MODMAP_ENTRY_CONTROL] |= EGG_VIRTUAL_CONTROL_MASK;
+ modmap->mapping[EGG_MODMAP_ENTRY_LOCK] |= EGG_VIRTUAL_LOCK_MASK;
+ modmap->mapping[EGG_MODMAP_ENTRY_MOD1] |= EGG_VIRTUAL_ALT_MASK;
+ modmap->mapping[EGG_MODMAP_ENTRY_MOD2] |= EGG_VIRTUAL_MOD2_MASK;
+ modmap->mapping[EGG_MODMAP_ENTRY_MOD3] |= EGG_VIRTUAL_MOD3_MASK;
+ modmap->mapping[EGG_MODMAP_ENTRY_MOD4] |= EGG_VIRTUAL_MOD4_MASK;
+ modmap->mapping[EGG_MODMAP_ENTRY_MOD5] |= EGG_VIRTUAL_MOD5_MASK;
+
+ XFreeModifiermap (xmodmap);
+}
+
+const EggModmap*
+egg_keymap_get_modmap (GdkKeymap *keymap)
+{
+ EggModmap *modmap;
+
+ /* This is all a hack, much simpler when we can just
+ * modify GDK directly.
+ */
+
+ modmap = g_object_get_data (G_OBJECT (keymap),
+ "egg-modmap");
+
+ if (modmap == NULL)
+ {
+ modmap = g_new0 (EggModmap, 1);
+
+ /* FIXME modify keymap change events with an event filter
+ * and force a reload if we get one
+ */
+
+ reload_modmap (keymap, modmap);
+
+ g_object_set_data_full (G_OBJECT (keymap),
+ "egg-modmap",
+ modmap,
+ g_free);
+ }
+
+ g_assert (modmap != NULL);
+
+ return modmap;
+}