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keyboard: use 'us' as fallback for XKB_DEFAULT_LAYOUT

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...if keymap cannot be created for the provided XKB_DEFAULT_LAYOUT.

If keymap still cannot be created, exit with a helpful message to avoid
crash that is hard to understand.

Fixes: https://github.com/stefonarch/lxqt-labwc-session/issues/7
This commit is contained in:
Johan Malm 2024-03-11 22:04:52 +00:00 • committed by Johan Malm
parent 1e1e90d0bb
commit 5cb3583108
2 changed files with 17 additions and 1 deletions
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13
src/input/keyboard.c
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@ -1,5 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <stdlib.h>
#include <wlr/backend/multi.h>
#include <wlr/backend/session.h>
#include <wlr/interfaces/wlr_keyboard.h>
@ -628,6 +630,8 @@ reset_window_keyboard_layout_groups(struct server *server)
static void
set_layout(struct server *server, struct wlr_keyboard *kb)
{
static bool fallback_mode;
struct xkb_rule_names rules = { 0 };
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
struct xkb_keymap *keymap = xkb_map_new_from_names(context, &rules,
@ -639,7 +643,14 @@ set_layout(struct server *server, struct wlr_keyboard *kb)
}
xkb_keymap_unref(keymap);
} else {
wlr_log(WLR_ERROR, "Failed to create xkb keymap");
wlr_log(WLR_ERROR, "failed to create xkb keymap for layout '%s'",
getenv("XKB_DEFAULT_LAYOUT"));
if (!fallback_mode) {
wlr_log(WLR_ERROR, "entering fallback mode with layout 'us'");
fallback_mode = true;
setenv("XKB_DEFAULT_LAYOUT", "us", 1);
set_layout(server, kb);
}
}
xkb_context_unref(context);
}