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keybindings: Add support for resolving from multiple layouts

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Add the infrastructure to resolve keybinding symbols from multiple
layouts. It is still unused, but will be, when the primary layout does
not have the required latin keysyms in it.

https://bugzilla.gnome.org/show_bug.cgi?id=787016
This commit is contained in:
Jonas Ådahl 2017-09-01 17:46:53 +08:00
parent 27d6c063ad
commit 8b060342bd
2 changed files with 112 additions and 35 deletions
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13
src/core/keybindings-private.h
View File

@ -89,6 +89,13 @@ typedef struct
gboolean builtin:1;
} MetaKeyPref;
typedef struct _MetaKeyBindingKeyboardLayout
{
struct xkb_keymap *keymap;
xkb_layout_index_t index;
xkb_level_index_t n_levels;
} MetaKeyBindingKeyboardLayout;
typedef struct
{
MetaBackend *backend;
@ -108,7 +115,11 @@ typedef struct
MetaResolvedKeyCombo iso_next_group_combo[2];
int n_iso_next_group_combos;
xkb_level_index_t keymap_num_levels;
/*
* A primary layout, and an optional secondary layout that is
* not yet used.
*/
MetaKeyBindingKeyboardLayout active_layouts[2];
/* Alt+click button grabs */
ClutterModifierType window_grab_modifiers;

134
src/core/keybindings.c
View File

@ -57,6 +57,9 @@
#define SCHEMA_MUTTER_KEYBINDINGS "org.gnome.mutter.keybindings"
#define SCHEMA_MUTTER_WAYLAND_KEYBINDINGS "org.gnome.mutter.wayland.keybindings"
#define META_KEY_BINDING_PRIMARY_LAYOUT 0
#define META_KEY_BINDING_SECONDARY_LAYOUT 1
static gboolean add_builtin_keybinding (MetaDisplay *display,
const char *name,
GSettings *settings,
@ -339,6 +342,27 @@ get_keycodes_for_keysym_iter (struct xkb_keymap *keymap,
}
}
static void
add_keysym_keycodes_from_layout (int keysym,
MetaKeyBindingKeyboardLayout *layout,
GArray *keycodes)
{
xkb_level_index_t layout_level;
for (layout_level = 0; layout_level < layout->n_levels; layout_level++)
{
FindKeysymData search_data = (FindKeysymData) {
.keycodes = keycodes,
.keysym = keysym,
.layout = layout->index,
.level = layout_level
};
xkb_keymap_key_for_each (layout->keymap,
get_keycodes_for_keysym_iter,
&search_data);
}
}
/* Original code from gdk_x11_keymap_get_entries_for_keyval() in
* gdkkeys-x11.c */
static void
@ -346,9 +370,7 @@ get_keycodes_for_keysym (MetaKeyBindingManager *keys,
int keysym,
MetaResolvedKeyCombo *resolved_combo)
{
struct xkb_keymap *keymap;
xkb_layout_index_t layout_index;
xkb_level_index_t layout_level;
unsigned int i;
GArray *keycodes;
int keycode;
@ -362,19 +384,14 @@ get_keycodes_for_keysym (MetaKeyBindingManager *keys,
goto out;
}
keymap = meta_backend_get_keymap (keys->backend);
layout_index = meta_backend_get_keymap_layout_group (keys->backend);
for (layout_level = 0; layout_level < keys->keymap_num_levels; layout_level++)
for (i = 0; i < G_N_ELEMENTS (keys->active_layouts); i++)
{
FindKeysymData search_data = (FindKeysymData) {
.keycodes = keycodes,
.keysym = keysym,
.layout = layout_index,
.level = layout_level
};
xkb_keymap_key_for_each (keymap, get_keycodes_for_keysym_iter,
&search_data);
MetaKeyBindingKeyboardLayout *layout = &keys->active_layouts[i];
if (!layout->keymap)
continue;
add_keysym_keycodes_from_layout (keysym, layout, keycodes);
}
out:
@ -384,29 +401,44 @@ get_keycodes_for_keysym (MetaKeyBindingManager *keys,
keycodes->len == 0 ? TRUE : FALSE);
}
static void
determine_keymap_num_levels_iter (struct xkb_keymap *keymap,
xkb_keycode_t keycode,
void *data)
typedef struct _CalculateLayoutLevelsState
{
xkb_level_index_t *num_levels = data;
xkb_layout_index_t i;
struct xkb_keymap *keymap;
xkb_layout_index_t layout_index;
for (i = 0; i < xkb_keymap_num_layouts_for_key (keymap, keycode); i++)
{
xkb_level_index_t level = xkb_keymap_num_levels_for_key (keymap, keycode, i);
if (level > *num_levels)
*num_levels = level;
}
xkb_level_index_t out_n_levels;
} CalculateLayoutLevelState;
static void
calculate_n_layout_levels_iter (struct xkb_keymap *keymap,
xkb_keycode_t keycode,
void *data)
{
CalculateLayoutLevelState *state = data;
xkb_level_index_t n_levels;
n_levels = xkb_keymap_num_levels_for_key (keymap,
keycode,
state->layout_index);
state->out_n_levels = MAX (n_levels, state->out_n_levels);
}
static void
determine_keymap_num_levels (MetaKeyBindingManager *keys)
{
struct xkb_keymap *keymap = meta_backend_get_keymap (keys->backend);
static xkb_level_index_t
calculate_n_layout_levels (struct xkb_keymap *keymap,
xkb_layout_index_t layout_index)
keys->keymap_num_levels = 0;
xkb_keymap_key_for_each (keymap, determine_keymap_num_levels_iter, &keys->keymap_num_levels);
{
CalculateLayoutLevelState state = {
.keymap = keymap,
.layout_index = layout_index,
.out_n_levels = 0
};
xkb_keymap_key_for_each (keymap, calculate_n_layout_levels_iter, &state);
return state.out_n_levels;
}
static void
@ -590,12 +622,44 @@ binding_reload_combos_foreach (gpointer key,
index_binding (keys, binding);
}
static void
clear_active_keyboard_layouts (MetaKeyBindingManager *keys)
{
unsigned int i;
for (i = 0; i < G_N_ELEMENTS (keys->active_layouts); i++)
{
MetaKeyBindingKeyboardLayout *layout = &keys->active_layouts[i];
g_clear_pointer (&layout->keymap, xkb_keymap_unref);
*layout = (MetaKeyBindingKeyboardLayout) { 0 };
}
}
static void
reload_active_keyboard_layouts (MetaKeyBindingManager *keys)
{
struct xkb_keymap *keymap;
xkb_layout_index_t layout_index;
clear_active_keyboard_layouts (keys);
keymap = meta_backend_get_keymap (keys->backend);
layout_index = meta_backend_get_keymap_layout_group (keys->backend);
keys->active_layouts[META_KEY_BINDING_PRIMARY_LAYOUT] = (MetaKeyBindingKeyboardLayout) {
.keymap = xkb_keymap_ref (keymap),
.index = layout_index,
.n_levels = calculate_n_layout_levels (keymap, layout_index),
};
}
static void
reload_combos (MetaKeyBindingManager *keys)
{
g_hash_table_remove_all (keys->key_bindings_index);
determine_keymap_num_levels (keys);
reload_active_keyboard_layouts (keys);
resolve_key_combo (keys,
&keys->overlay_key_combo,
@ -1196,6 +1260,8 @@ meta_display_shutdown_keys (MetaDisplay *display)
g_hash_table_destroy (keys->key_bindings_index);
g_hash_table_destroy (keys->key_bindings);
clear_active_keyboard_layouts (keys);
}
/* Grab/ungrab, ignoring all annoying modifiers like NumLock etc. */