swaybar: show hidden bar on key event

Since wayland does not currently allow swaybar to create global
keybinds, this is handled within sway and sent to the bar using a custom
event, so as not to pollute existing events, called bar_state_update.

1 files changed, 18 insertions, 1 deletions

diff --git a/swaybar/ipc.c b/swaybar/ipc.c
index 56379fdb..c7fdffae 100644
--- a/swaybar/ipc.c
+++ b/swaybar/ipc.c
@@ -367,7 +367,7 @@ bool ipc_initialize(struct swaybar *bar) {
         struct swaybar_config *config = bar->config;
         char subscribe[128]; // suitably large buffer
         len = snprintf(subscribe, 128,
-                        "[ \"barconfig_update\" %s %s ]",
+                        "[ \"barconfig_update\" , \"bar_state_update\" %s %s ]",
                         config->binding_mode_indicator ? ", \"mode\"" : "",
                         config->workspace_buttons ? ", \"workspace\"" : "");
         free(ipc_single_command(bar->ipc_event_socketfd,
@@ -375,6 +375,20 @@ bool ipc_initialize(struct swaybar *bar) {
         return true;
 }
 
+static bool handle_bar_state_update(struct swaybar *bar, json_object *event) {
+        json_object *json_id;
+        json_object_object_get_ex(event, "id", &json_id);
+        const char *id = json_object_get_string(json_id);
+        if (strcmp(id, bar->id) != 0) {
+                return false;
+        }
+
+        json_object *visible_by_modifier;
+        json_object_object_get_ex(event, "visible_by_modifier", &visible_by_modifier);
+        bar->visible_by_modifier = json_object_get_boolean(visible_by_modifier);
+        return determine_bar_visibility(bar, false);
+}
+
 static bool handle_barconfig_update(struct swaybar *bar,
                 json_object *json_config) {
         json_object *json_id;
@@ -444,6 +458,9 @@ bool handle_ipc_readable(struct swaybar *bar) {
         case IPC_EVENT_BARCONFIG_UPDATE:
                 bar_is_dirty = handle_barconfig_update(bar, result);
                 break;
+        case IPC_EVENT_BAR_STATE_UPDATE:
+                bar_is_dirty = handle_bar_state_update(bar, result);
+                break;
         default:
                 bar_is_dirty = false;
                 break;