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Add fallbacks for when XKB is unavailable 

Fixes: https://github.com/awesomeWM/awesome/issues/1205
       (for master, dunno about 3.5)
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2016-11-04 17:24:08 +01:00
parent c7423fe79e
commit a4748164ab
3 changed files with 128 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
common/atoms.list
View File

@ -63,3 +63,4 @@ WM_CLIENT_LEADER
XSEL_DATA
WM_TAKE_FOCUS
AWESOME_CLIENT_ORDER
_XKB_RULES_NAMES

2
globalconf.h
View File

@ -106,6 +106,8 @@ typedef struct
bool have_xtest;
/** Check for SHAPE extension */
bool have_shape;
/** Check for XKB extension */
bool have_xkb;
uint8_t event_base_shape;
uint8_t event_base_xkb;
uint8_t event_base_randr;

152
xkb.c
View File

@ -27,6 +27,8 @@
#include "globalconf.h"
#include "xwindow.h"
#include "objects/client.h"
#include "common/atoms.h"
#include <xcb/xkb.h>
#include <xkbcommon/xkbcommon.h>
#include <xkbcommon/xkbcommon-x11.h>
@ -41,6 +43,11 @@ int
luaA_xkb_set_layout_group(lua_State *L)
{
unsigned group = luaL_checkinteger(L, 1);
if (!globalconf.have_xkb)
{
luaA_warn(L, "XKB not supported");
return 0;
}
xcb_xkb_latch_lock_state (globalconf.connection, XCB_XKB_ID_USE_CORE_KBD,
0, 0, true, group, 0, 0, 0);
return 0;
@ -55,6 +62,12 @@ luaA_xkb_set_layout_group(lua_State *L)
int
luaA_xkb_get_layout_group(lua_State *L)
{
if (!globalconf.have_xkb)
{
luaA_warn(L, "XKB not supported");
return 0;
}
xcb_xkb_get_state_cookie_t state_c;
state_c = xcb_xkb_get_state_unchecked (globalconf.connection,
XCB_XKB_ID_USE_CORE_KBD);
@ -81,6 +94,12 @@ luaA_xkb_get_layout_group(lua_State *L)
int
luaA_xkb_get_group_names(lua_State *L)
{
if (!globalconf.have_xkb)
{
luaA_warn(L, "XKB not supported");
return 0;
}
xcb_xkb_get_names_cookie_t name_c;
name_c = xcb_xkb_get_names_unchecked (globalconf.connection,
XCB_XKB_ID_USE_CORE_KBD,
@ -121,6 +140,51 @@ luaA_xkb_get_group_names(lua_State *L)
return 1;
}
static bool
fill_rmlvo_from_root(struct xkb_rule_names *xkb_names)
{
xcb_get_property_reply_t *prop_reply = xcb_get_property_reply(globalconf.connection,
xcb_get_property_unchecked(globalconf.connection, false, globalconf.screen->root, _XKB_RULES_NAMES, XCB_GET_PROPERTY_TYPE_ANY, 0, UINT_MAX),
NULL);
if (!prop_reply)
return false;
if (prop_reply->value_len == 0)
{
p_delete(&prop_reply);
return false;
}
const char *walk = (const char *) xcb_get_property_value(prop_reply);
unsigned int remaining = xcb_get_property_value_length(prop_reply);
for (int i = 0; i < 5 && remaining > 0; i++)
{
const int len = strnlen(walk, remaining);
switch (i) {
case 0:
xkb_names->rules = strndup(walk, len);
break;
case 1:
xkb_names->model = strndup(walk, len);
break;
case 2:
xkb_names->layout = strndup(walk, len);
break;
case 3:
xkb_names->variant = strndup(walk, len);
break;
case 4:
xkb_names->options = strndup(walk, len);
break;
}
remaining -= len + 1;
walk = &walk[len + 1];
}
p_delete(&prop_reply);
return true;
}
/** Fill globalconf.xkb_state based on connection and context
*/
static void
@ -128,28 +192,55 @@ xkb_fill_state(void)
{
xcb_connection_t *conn = globalconf.connection;
int32_t device_id = xkb_x11_get_core_keyboard_device_id(conn);
if (device_id == -1)
fatal("Failed while getting XKB device id");
int32_t device_id = -1;
if (globalconf.have_xkb)
{
device_id = xkb_x11_get_core_keyboard_device_id(conn);
if (device_id == -1)
warn("Failed while getting XKB device id");
}
struct xkb_keymap *xkb_keymap = xkb_x11_keymap_new_from_device(
globalconf.xkb_ctx,
conn,
device_id,
XKB_KEYMAP_COMPILE_NO_FLAGS);
if (device_id != -1)
{
struct xkb_keymap *xkb_keymap = xkb_x11_keymap_new_from_device(
globalconf.xkb_ctx,
conn,
device_id,
XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!xkb_keymap)
fatal("Failed while getting XKB keymap from device");
if (!xkb_keymap)
fatal("Failed while getting XKB keymap from device");
globalconf.xkb_state = xkb_x11_state_new_from_device(xkb_keymap,
conn,
device_id);
if (!globalconf.xkb_state)
fatal("Failed while getting XKB state from device");
globalconf.xkb_state = xkb_x11_state_new_from_device(xkb_keymap,
conn,
device_id);
if (!globalconf.xkb_state)
fatal("Failed while getting XKB state from device");
/* xkb_keymap is no longer referenced directly; decreasing refcount */
xkb_keymap_unref(xkb_keymap);
/* xkb_keymap is no longer referenced directly; decreasing refcount */
xkb_keymap_unref(xkb_keymap);
}
else
{
struct xkb_rule_names names = { NULL, NULL, NULL, NULL, NULL };
if (!fill_rmlvo_from_root(&names))
warn("Could not get _XKB_RULES_NAMES from root window, falling back to defaults.");
struct xkb_keymap *xkb_keymap = xkb_keymap_new_from_names(globalconf.xkb_ctx, &names, 0);
globalconf.xkb_state = xkb_state_new(xkb_keymap);
if (!globalconf.xkb_state)
fatal("Failed while creating XKB state");
/* xkb_keymap is no longer referenced directly; decreasing refcount */
xkb_keymap_unref(xkb_keymap);
p_delete(&names.rules);
p_delete(&names.model);
p_delete(&names.layout);
p_delete(&names.variant);
p_delete(&names.options);
}
}
@ -183,6 +274,8 @@ xkb_free_keymap(void)
static void
xkb_reload_keymap(void)
{
assert(globalconf.have_xkb);
xkb_state_unref(globalconf.xkb_state);
xkb_fill_state();
@ -211,6 +304,7 @@ void
event_handle_xkb_notify(xcb_generic_event_t* event)
{
lua_State *L = globalconf_get_lua_State();
assert(globalconf.have_xkb);
/* The pad0 field of xcb_generic_event_t contains the event sub-type,
* unfortunately xkb doesn't provide a usable struct for getting this in a
@ -274,9 +368,12 @@ xkb_init(void)
NULL,
NULL);
globalconf.have_xkb = success_xkb;
if (!success_xkb) {
fatal("XKB not found or not supported");
warn("XKB not found or not supported");
xkb_init_keymap();
return;
}
uint16_t map = XCB_XKB_EVENT_TYPE_STATE_NOTIFY | XCB_XKB_EVENT_TYPE_MAP_NOTIFY | XCB_XKB_EVENT_TYPE_NEW_KEYBOARD_NOTIFY;
@ -323,15 +420,16 @@ xkb_init(void)
void
xkb_free(void)
{
// unsubscribe from all events
xcb_xkb_select_events(globalconf.connection,
XCB_XKB_ID_USE_CORE_KBD,
0,
0,
0,
0,
0,
0);
if (globalconf.have_xkb)
// unsubscribe from all events
xcb_xkb_select_events(globalconf.connection,
XCB_XKB_ID_USE_CORE_KBD,
0,
0,
0,
0,
0,
0);
xkb_free_keymap();
}