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keybindings: Resolve on us layout too if primary is not latin based
If a non-latin based keyboard layout is active, for example Cyrillic, keybindings won't work unless we resolve the bound keysyms on a secondary latin based layout. So, to make keybindings work on non-latin based layouts, detect if a keymap doesn't have all of the basic latin letters (a-z) and resolve from an additional US layout as well. https://bugzilla.gnome.org/show_bug.cgi?id=787016
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@ -116,8 +116,8 @@ typedef struct
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int n_iso_next_group_combos;
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/*
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* A primary layout, and an optional secondary layout that is
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* not yet used.
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* A primary layout, and an optional secondary layout for when the
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* primary layout does not use the latin alphabet.
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*/
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MetaKeyBindingKeyboardLayout active_layouts[2];
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@ -622,6 +622,86 @@ binding_reload_combos_foreach (gpointer key,
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index_binding (keys, binding);
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}
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typedef struct _FindLatinKeysymsState
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{
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MetaKeyBindingKeyboardLayout *layout;
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gboolean *required_keysyms_found;
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int n_required_keysyms;
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} FindLatinKeysymsState;
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static void
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find_latin_keysym (struct xkb_keymap *keymap,
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xkb_keycode_t key,
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void *data)
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{
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FindLatinKeysymsState *state = data;
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int n_keysyms, i;
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const xkb_keysym_t *keysyms;
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n_keysyms = xkb_keymap_key_get_syms_by_level (state->layout->keymap,
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key,
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state->layout->index,
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0,
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&keysyms);
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for (i = 0; i < n_keysyms; i++)
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{
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xkb_keysym_t keysym = keysyms[i];
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if (keysym >= XKB_KEY_a && keysym <= XKB_KEY_z)
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{
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unsigned int keysym_index = keysym - XKB_KEY_a;
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if (!state->required_keysyms_found[keysym_index])
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{
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state->required_keysyms_found[keysym_index] = TRUE;
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state->n_required_keysyms--;
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}
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}
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}
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}
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static gboolean
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needs_secondary_layout (MetaKeyBindingKeyboardLayout *layout)
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{
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gboolean required_keysyms_found[] = {
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FALSE, /* XKB_KEY_a */
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FALSE, /* XKB_KEY_b */
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FALSE, /* XKB_KEY_c */
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FALSE, /* XKB_KEY_d */
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FALSE, /* XKB_KEY_e */
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FALSE, /* XKB_KEY_f */
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FALSE, /* XKB_KEY_g */
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FALSE, /* XKB_KEY_h */
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FALSE, /* XKB_KEY_i */
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FALSE, /* XKB_KEY_j */
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FALSE, /* XKB_KEY_k */
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FALSE, /* XKB_KEY_l */
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FALSE, /* XKB_KEY_m */
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FALSE, /* XKB_KEY_n */
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FALSE, /* XKB_KEY_o */
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FALSE, /* XKB_KEY_p */
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FALSE, /* XKB_KEY_q */
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FALSE, /* XKB_KEY_r */
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FALSE, /* XKB_KEY_s */
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FALSE, /* XKB_KEY_t */
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FALSE, /* XKB_KEY_u */
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FALSE, /* XKB_KEY_v */
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FALSE, /* XKB_KEY_w */
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FALSE, /* XKB_KEY_x */
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FALSE, /* XKB_KEY_y */
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FALSE, /* XKB_KEY_z */
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};
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FindLatinKeysymsState state = {
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.layout = layout,
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.required_keysyms_found = required_keysyms_found,
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.n_required_keysyms = G_N_ELEMENTS (required_keysyms_found),
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};
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xkb_keymap_key_for_each (layout->keymap, find_latin_keysym, &state);
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return state.n_required_keysyms != 0;
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}
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static void
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clear_active_keyboard_layouts (MetaKeyBindingManager *keys)
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{
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@ -636,22 +716,55 @@ clear_active_keyboard_layouts (MetaKeyBindingManager *keys)
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}
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}
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static MetaKeyBindingKeyboardLayout
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create_us_layout (void)
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{
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struct xkb_rule_names names;
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struct xkb_keymap *keymap;
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struct xkb_context *context;
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names.rules = DEFAULT_XKB_RULES_FILE;
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names.model = DEFAULT_XKB_MODEL;
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names.layout = "us";
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names.variant = "";
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names.options = "";
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context = xkb_context_new (XKB_CONTEXT_NO_FLAGS);
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keymap = xkb_keymap_new_from_names (context, &names, XKB_KEYMAP_COMPILE_NO_FLAGS);
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xkb_context_unref (context);
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return (MetaKeyBindingKeyboardLayout) {
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.keymap = keymap,
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.n_levels = calculate_n_layout_levels (keymap, 0),
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};
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}
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static void
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reload_active_keyboard_layouts (MetaKeyBindingManager *keys)
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{
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struct xkb_keymap *keymap;
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xkb_layout_index_t layout_index;
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MetaKeyBindingKeyboardLayout primary_layout;
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clear_active_keyboard_layouts (keys);
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keymap = meta_backend_get_keymap (keys->backend);
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layout_index = meta_backend_get_keymap_layout_group (keys->backend);
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keys->active_layouts[META_KEY_BINDING_PRIMARY_LAYOUT] = (MetaKeyBindingKeyboardLayout) {
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primary_layout = (MetaKeyBindingKeyboardLayout) {
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.keymap = xkb_keymap_ref (keymap),
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.index = layout_index,
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.n_levels = calculate_n_layout_levels (keymap, layout_index),
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};
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keys->active_layouts[META_KEY_BINDING_PRIMARY_LAYOUT] = primary_layout;
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if (needs_secondary_layout (&primary_layout))
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{
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MetaKeyBindingKeyboardLayout us_layout;
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us_layout = create_us_layout ();
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keys->active_layouts[META_KEY_BINDING_SECONDARY_LAYOUT] = us_layout;
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}
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}
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static void
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