swaybar: set bar dirty on SNI event

include/swaybar/bar.h

@@ -88,6 +88,8 @@ bool bar_setup(struct swaybar *bar, const char *socket_path);
 void bar_run(struct swaybar *bar);
 void bar_teardown(struct swaybar *bar);
 
+void set_bar_dirty(struct swaybar *bar);
+
 /*
  * Determines whether the bar should be visible and changes it to be so.
  * If the current visibility of the bar is the different to what it should be,

swaybar/bar.c

@@ -124,7 +124,7 @@ static void destroy_layer_surface(struct swaybar_output *output) {
 	output->frame_scheduled = false;
 }
 
-static void set_bar_dirty(struct swaybar *bar) {
+void set_bar_dirty(struct swaybar *bar) {
 	struct swaybar_output *output;
 	wl_list_for_each(output, &bar->outputs, link) {
 		set_output_dirty(output);

swaybar/tray/host.c

@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include "swaybar/bar.h"
 #include "swaybar/tray/host.h"
 #include "swaybar/tray/item.h"
 #include "swaybar/tray/tray.h"
@@ -56,6 +57,7 @@ static int handle_sni_unregistered(sd_bus_message *msg, void *data,
 		wlr_log(WLR_DEBUG, "Unregistering Status Notifier Item '%s'", id);
 		destroy_sni(tray->items->items[idx]);
 		list_del(tray->items, idx);
+		set_bar_dirty(tray->bar);
 	}
 	return ret;
 }

swaybar/tray/item.c

@@ -24,6 +24,13 @@ static bool sni_ready(struct swaybar_sni *sni) {
 			sni->icon_name || sni->icon_pixmap);
 }
 
+static void set_sni_dirty(struct swaybar_sni *sni) {
+	if (sni_ready(sni)) {
+		sni->min_size = sni->max_size = 0; // invalidate previous icon
+		set_bar_dirty(sni->tray->bar);
+	}
+}
+
 static int read_pixmap(sd_bus_message *msg, struct swaybar_sni *sni,
 		const char *prop, list_t **dest) {
 	int ret = sd_bus_message_enter_container(msg, 'a', "(iiay)");
@@ -124,6 +131,11 @@ static int get_property_callback(sd_bus_message *msg, void *data,
 			*str = strdup(*str);
 		}
 	}
+
+	if (strcmp(prop, "Status") == 0 || (sni->status && (sni->status[0] == 'N' ?
+				prop[0] == 'A' : strncmp(prop, "Icon", 4) == 0))) {
+		set_sni_dirty(sni);
+	}
 cleanup:
 	free(data);
 	return ret;
@@ -185,6 +197,7 @@ static int handle_new_status(sd_bus_message *msg, void *data, sd_bus_error *erro
 		free(sni->status);
 		sni->status = strdup(status);
 		wlr_log(WLR_DEBUG, "%s has new Status '%s'", sni->watcher_id, status);
+		set_sni_dirty(sni);
 	}
 	return ret;
 }