IPC: Send keyboard layout info in IPC_GET_INPUTS

Signed-off-by: Harish Krupo <harishkrupo@gmail.com>

sway/ipc-json.c

@@ -12,6 +12,7 @@
 #include "sway/input/seat.h"
 #include <wlr/types/wlr_box.h>
 #include <wlr/types/wlr_output.h>
+#include <xkbcommon/xkbcommon.h>
 #include "wlr-layer-shell-unstable-v1-protocol.h"
 
 static const char *ipc_json_layout_description(enum sway_container_layout l) {
@@ -503,6 +504,27 @@ json_object *ipc_json_describe_input(struct sway_input_device *device) {
 	json_object_object_add(object, "type",
 		json_object_new_string(describe_device_type(device)));
 
+	if (device->wlr_device->type == WLR_INPUT_DEVICE_KEYBOARD) {
+		struct wlr_keyboard *keyboard = device->wlr_device->keyboard;
+		struct xkb_keymap *keymap = keyboard->keymap;
+		struct xkb_state *state = keyboard->xkb_state;
+		xkb_layout_index_t num_layouts = xkb_keymap_num_layouts(keymap);
+		xkb_layout_index_t layout_idx;
+		for (layout_idx = 0; layout_idx < num_layouts; layout_idx++) {
+			bool is_active =
+				xkb_state_layout_index_is_active(state,
+						layout_idx,
+						XKB_STATE_LAYOUT_EFFECTIVE);
+			if (is_active) {
+				const char *layout =
+					xkb_keymap_layout_get_name(keymap, layout_idx);
+				json_object_object_add(object, "xkb_active_layout_name",
+						json_object_new_string(layout));
+				break;
+			}
+		}
+	}
+
 	return object;
 }
 

swaymsg/main.c

@@ -111,7 +111,7 @@ static const char *pretty_type_name(const char *name) {
 }
 
 static void pretty_print_input(json_object *i) {
-	json_object *id, *name, *type, *product, *vendor;
+	json_object *id, *name, *type, *product, *vendor, *kbdlayout;
 	json_object_object_get_ex(i, "identifier", &id);
 	json_object_object_get_ex(i, "name", &name);
 	json_object_object_get_ex(i, "type", &type);
@@ -123,14 +123,21 @@ static void pretty_print_input(json_object *i) {
 		"  Type: %s\n"
 		"  Identifier: %s\n"
 		"  Product ID: %d\n"
-		"  Vendor ID: %d\n\n";
+		"  Vendor ID: %d\n";
 
 
 	printf(fmt, json_object_get_string(name),
 		pretty_type_name(json_object_get_string(type)),
 		json_object_get_string(id),
 		json_object_get_int(product),
 		json_object_get_int(vendor));
+
+	if (json_object_object_get_ex(i, "xkb_active_layout_name", &kbdlayout)) {
+		printf("  Active Keyboard Layout: %s\n",
+			json_object_get_string(kbdlayout));
+	}
+
+	printf("\n");
 }
 
 static void pretty_print_seat(json_object *i) {