ipc: add xkb_layout_names and xkb_active_layout_index

These can be useful to implement per-window layouts as a script.

See https://github.com/swaywm/sway/issues/2361

1 files changed, 13 insertions, 8 deletions

diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index b9abc47f..7a65be07 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -824,19 +824,24 @@ json_object *ipc_json_describe_input(struct sway_input_device *device) {
                 struct wlr_keyboard *keyboard = device->wlr_device->keyboard;
                 struct xkb_keymap *keymap = keyboard->keymap;
                 struct xkb_state *state = keyboard->xkb_state;
+
+                json_object *layouts_arr = json_object_new_array();
+                json_object_object_add(object, "xkb_layout_names", layouts_arr);
+
                 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);
+                        const char *layout = xkb_keymap_layout_get_name(keymap, layout_idx);
+                        json_object_array_add(layouts_arr,
+                                layout ? json_object_new_string(layout) : NULL);
+
+                        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_index",
+                                        json_object_new_int(layout_idx));
                                 json_object_object_add(object, "xkb_active_layout_name",
-                                                layout ? json_object_new_string(layout) : NULL);
-                                break;
+                                        layout ? json_object_new_string(layout) : NULL);
                         }
                 }
         }