From 50a735921800d857fc5c45bacb9fe728a1e2aac1 Mon Sep 17 00:00:00 2001
From: mateus-cezario-barreto <mateus.cezario.barreto@gmail.com>
Date: Sat, 8 Jun 2024 08:50:32 -0300
Subject: [PATCH] Add option to use a xkb file

---
 config.def.h |  8 ++++++++
 dwl.c        | 28 ++++++++++++++++++++++++----
 2 files changed, 32 insertions(+), 4 deletions(-)

diff --git a/config.def.h b/config.def.h
index a784eb4..414e58d 100644
--- a/config.def.h
+++ b/config.def.h
@@ -57,6 +57,14 @@ static const struct xkb_rule_names xkb_rules = {
 	.options = NULL,
 };
 
+/* Wether to try to use an xkb file */
+static const int use_custom_xkb_file = 1;
+
+/* Complete path to a xkb file */
+/* NOTE: if dwl fails to compile the file, the xkb_names will be used */
+/* instead */
+static const char* path_to_xkb_file = "/etc/xkb/custom-layout.xkb";
+
 static const int repeat_rate = 25;
 static const int repeat_delay = 600;
 
diff --git a/dwl.c b/dwl.c
index 6f041a0..a8aa39e 100644
--- a/dwl.c
+++ b/dwl.c
@@ -814,17 +814,37 @@ KeyboardGroup *
 createkeyboardgroup(void)
 {
 	KeyboardGroup *group = ecalloc(1, sizeof(*group));
-	struct xkb_context *context;
-	struct xkb_keymap *keymap;
+	struct xkb_context *context = NULL;
+	struct xkb_keymap *keymap = NULL;
 
 	group->wlr_group = wlr_keyboard_group_create();
 	group->wlr_group->data = group;
 
 	/* Prepare an XKB keymap and assign it to the keyboard group. */
 	context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
-	if (!(keymap = xkb_keymap_new_from_names(context, &xkb_rules,
-				XKB_KEYMAP_COMPILE_NO_FLAGS)))
+
+	FILE* xkb_file = NULL;
+
+	if (use_custom_xkb_file == 1) {
+		xkb_file = fopen(path_to_xkb_file, "r");
+	}
+
+	if (xkb_file != NULL) {
+		keymap = xkb_keymap_new_from_file(context, xkb_file,
+				XKB_KEYMAP_FORMAT_TEXT_V1,
+				XKB_KEYMAP_COMPILE_NO_FLAGS);
+		fclose(xkb_file);
+	}
+
+	/* Compile keymap from names if it was not compiled from xkb_file */
+	if (keymap == NULL) {
+		keymap = xkb_keymap_new_from_names(context, &xkb_rules,
+		XKB_KEYMAP_COMPILE_NO_FLAGS);
+	}
+
+	if (keymap == NULL) {
 		die("failed to compile keymap");
+	}
 
 	wlr_keyboard_set_keymap(&group->wlr_group->keyboard, keymap);
 	xkb_keymap_unref(keymap);