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Simplify XKB keycode replace logic.

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This commit is contained in:
Daiki Ueno
2011-06-15 17:10:14 +09:00
parent b30db118f2
commit 9ab228e8f0
1 changed files with 100 additions and 143 deletions
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243
src/client.c
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@ -91,8 +91,6 @@ struct _EekboardClient {
#ifdef HAVE_XTEST
KeyCode modifier_keycodes[8];
KeyCode reserved_keycode;
KeySym reserved_keysym;
XkbDescRec *xkb;
#endif /* HAVE_XTEST */
@ -135,16 +133,6 @@ static gboolean set_keyboard_from_xkl (EekboardClient *client,
#ifdef HAVE_XTEST
static void update_modifier_keycodes
(EekboardClient *client);
static gboolean get_keycode_for_keysym
(EekboardClient *client,
guint keysym,
guint *keycode,
guint *modifiers);
static gboolean get_keycode_for_keysym_replace
(EekboardClient *client,
guint keysym,
guint *keycode,
guint *modifiers);
#endif /* HAVE_XTEST */
static void
@ -820,6 +808,94 @@ on_xkl_state_changed (XklEngine *xklengine,
}
#ifdef HAVE_XTEST
/* The following functions for keyboard mapping change are direct
translation of the code in Caribou (in libcaribou/xadapter.vala):
- get_replaced_keycode (Caribou: get_reserved_keycode)
- replace_keycode
- get_keycode_from_gdk_keymap (Caribou: best_keycode_keyval_match)
*/
static guint
get_replaced_keycode (EekboardClient *client)
{
Display *display = GDK_DISPLAY_XDISPLAY (client->display);
gint i;
for (i = client->xkb->max_key_code; i >= client->xkb->min_key_code; --i)
if (client->xkb->map->key_sym_map[i].kt_index[0] == XkbOneLevelIndex &&
XKeycodeToKeysym (display, i, 0) != 0)
return i;
return XKeysymToKeycode (display, 0x0023); /* XK_numbersign */
}
/* Replace keysym assigned to KEYCODE to KEYSYM. Both args are used
as in-out. If KEYCODE points to 0, this function picks a keycode
from the current map and replace the associated keysym to KEYSYM.
In that case, the replaced keycode is stored in KEYCODE and the old
keysym is stored in KEYSYM. If otherwise (KEYCODE points to
non-zero keycode), it simply changes the current map with the
specified KEYCODE and KEYSYM. */
static gboolean
replace_keycode (EekboardClient *client,
guint *keycode,
guint *keysym)
{
Display *display = GDK_DISPLAY_XDISPLAY (client->display);
guint offset;
XkbMapChangesRec changes;
guint replaced_keycode, replaced_keysym;
g_assert (keycode != NULL);
g_assert (keysym != NULL && *keysym != 0);
replaced_keycode = get_replaced_keycode (client);
if (replaced_keycode == 0)
return FALSE;
replaced_keysym = XKeycodeToKeysym (display, replaced_keycode, 0);
XFlush (display);
offset = client->xkb->map->key_sym_map[replaced_keycode].offset;
client->xkb->map->syms[offset] = *keysym;
changes.changed = XkbKeySymsMask;
changes.first_key_sym = replaced_keycode;
changes.num_key_syms = 1;
XkbChangeMap (display, client->xkb, &changes);
XFlush (display);
*keycode = replaced_keycode;
*keysym = replaced_keysym;
return TRUE;
}
static gboolean
get_keycode_from_gdk_keymap (EekboardClient *client,
guint keysym,
guint *keycode,
guint *modifiers)
{
GdkKeymap *keymap = gdk_keymap_get_default ();
GdkKeymapKey *keys, *best_match;
gint n_keys, i;
if (!gdk_keymap_get_entries_for_keyval (keymap, keysym, &keys, &n_keys))
return FALSE;
for (i = 0; i < n_keys; i++)
if (keys[i].group == client->group)
best_match = &keys[i];
*keycode = best_match->keycode;
*modifiers = best_match->level == 1 ? EEK_SHIFT_MASK : 0;
g_free (keys);
return TRUE;
}
static void
send_fake_modifier_key_event (EekboardClient *client,
EekModifierType modifiers,
@ -849,7 +925,7 @@ send_fake_key_event (EekboardClient *client,
EekSymbol *symbol;
EekModifierType keyboard_modifiers, modifiers;
guint xkeysym;
guint keycode;
guint keycode, replaced_keysym = 0;
symbol = eek_key_get_symbol_with_fallback (key, 0, 0);
@ -860,9 +936,14 @@ send_fake_key_event (EekboardClient *client,
xkeysym = eek_keysym_get_xkeysym (EEK_KEYSYM(symbol));
g_return_if_fail (xkeysym > 0);
if (!get_keycode_for_keysym (client, xkeysym, &keycode, &modifiers)) {
g_warning ("failed to lookup X keysym %X", xkeysym);
return;
modifiers = 0;
if (!get_keycode_from_gdk_keymap (client, xkeysym, &keycode, &modifiers)) {
keycode = 0;
replaced_keysym = xkeysym;
if (!replace_keycode (client, &keycode, &replaced_keysym)) {
g_warning ("failed to lookup X keysym %X", xkeysym);
return;
}
}
/* Clear level shift modifiers */
@ -885,6 +966,9 @@ send_fake_key_event (EekboardClient *client,
is_pressed,
CurrentTime);
XSync (GDK_DISPLAY_XDISPLAY (client->display), False);
if (replaced_keysym)
replace_keycode (client, &keycode, &replaced_keysym);
}
static void
@ -923,132 +1007,6 @@ update_modifier_keycodes (EekboardClient *client)
}
}
/* The following functions for keyboard mapping change are direct
translation of the code in Caribou (in libcaribou/xadapter.vala):
- get_reserved_keycode
- reset_reserved
- get_keycode_for_keysym_replace (Caribou: replace_keycode)
- get_keycode_for_keysym_best (Caribou: best_keycode_keyval_match)
- get_keycode_for_keysym (Caribou: keycode_for_keyval)
*/
static guint
get_reserved_keycode (EekboardClient *client)
{
Display *display = GDK_DISPLAY_XDISPLAY (client->display);
gint i;
for (i = client->xkb->max_key_code; i >= client->xkb->min_key_code; --i) {
if (client->xkb->map->key_sym_map[i].kt_index[0] == XkbOneLevelIndex) {
if (XKeycodeToKeysym (display, i, 0) != 0) {
gdk_error_trap_push ();
XGrabKey (display, i, 0,
gdk_x11_get_default_root_xwindow (), TRUE,
GrabModeSync, GrabModeSync);
XFlush (display);
XUngrabKey (display, i, 0,
gdk_x11_get_default_root_xwindow ());
if (gdk_error_trap_pop () == 0)
return i;
}
}
}
return XKeysymToKeycode (display, 0x0023); /* XK_numbersign */
}
static gboolean
reset_reserved (gpointer user_data)
{
EekboardClient *client = user_data;
guint keycode, modifiers;
get_keycode_for_keysym_replace (client,
client->reserved_keysym,
&keycode,
&modifiers);
return FALSE;
}
static gboolean
get_keycode_for_keysym_replace (EekboardClient *client,
guint keysym,
guint *keycode,
guint *modifiers)
{
Display *display = GDK_DISPLAY_XDISPLAY (client->display);
guint offset;
XkbMapChangesRec changes;
if (client->reserved_keycode == 0) {
client->reserved_keycode = get_reserved_keycode (client);
client->reserved_keysym =
XKeycodeToKeysym (display,
client->reserved_keycode,
0);
}
XFlush (display);
offset = client->xkb->map->key_sym_map[client->reserved_keycode].offset;
client->xkb->map->syms[offset] = keysym;
memset (&changes, 0, sizeof changes);
changes.changed = XkbKeySymsMask;
changes.first_key_sym = client->reserved_keycode;
changes.num_key_syms = 1;
XkbChangeMap (display, client->xkb, &changes);
XFlush (display);
*keycode = client->reserved_keycode;
*modifiers = 0;
if (keysym != client->reserved_keysym)
g_timeout_add (500, reset_reserved, client);
return TRUE;
}
static gboolean
get_keycode_for_keysym_best (EekboardClient *client,
guint keysym,
guint *keycode,
guint *modifiers)
{
GdkKeymap *keymap = gdk_keymap_get_default ();
GdkKeymapKey *keys, *best_match;
gint n_keys, i;
if (!gdk_keymap_get_entries_for_keyval (keymap, keysym, &keys, &n_keys))
return FALSE;
for (i = 0; i < n_keys; i++)
if (keys[i].group == client->group)
best_match = &keys[i];
*keycode = best_match->keycode;
*modifiers = best_match->level == 1 ? EEK_SHIFT_MASK : 0;
g_free (keys);
return TRUE;
}
static gboolean
get_keycode_for_keysym (EekboardClient *client,
guint keysym,
guint *keycode,
guint *modifiers)
{
if (get_keycode_for_keysym_best (client, keysym, keycode, modifiers))
return TRUE;
if (get_keycode_for_keysym_replace (client, keysym, keycode, modifiers))
return TRUE;
return FALSE;
}
gboolean
eekboard_client_enable_xtest (EekboardClient *client)
{
@ -1079,7 +1037,6 @@ eekboard_client_enable_xtest (EekboardClient *client)
XkbUseCoreKbd);
g_assert (client->xkb);
client->reserved_keycode = 0;
update_modifier_keycodes (client);
client->key_pressed_handler =