M src/panel.c → src/panel.c

@@ -184,8 +184,7 @@ #ifdef ENABLE_BATTERY
 			if (panel_items_order[k] == 'B')
 				init_battery_panel(p);
 #endif
-			if (panel_items_order[k] == 'S' &&
-				((i == systray_monitor) || (i == 0 && systray_monitor >= nb_panel))) {
+			if (panel_items_order[k] == 'S' && systray_on_monitor(i, nb_panel)) {
 				init_systray_panel(p);
 				refresh_systray = 1;
 			}
@@ -487,8 +486,7 @@ if (panel_items_order[k] == 'B')
 			p->area.list = g_slist_append(p->area.list, &p->battery);
 #endif
 		int i = p - panel1;
-		if (panel_items_order[k] == 'S' &&
-			((i == systray_monitor) || (i == 0 && systray_monitor >= nb_panel))) {
+		if (panel_items_order[k] == 'S' && systray_on_monitor(i, nb_panel)) {
 			p->area.list = g_slist_append(p->area.list, &systray);
 		}
 		if (panel_items_order[k] == 'C')

M src/systray/systraybar.c → src/systray/systraybar.c

@@ -636,3 +636,9 @@ if (traywin->hide) continue;
 		systray_render_icon(traywin);
 	}
 }
+
+int systray_on_monitor(int i_monitor, int nb_panels)
+{
+	return (i_monitor == systray_monitor) ||
+			(i_monitor == 0 && (systray_monitor >= nb_panels || systray_monitor < 0));
+}

M src/systray/systraybar.h → src/systray/systraybar.h

@@ -67,7 +67,7 @@ 
 void draw_systray(void *obj, cairo_t *c);
 int  resize_systray(void *obj);
 void on_change_systray(void *obj);
-
+int systray_on_monitor(int i_monitor, int nb_panels);
 
 // systray protocol
 // many tray icon doesn't manage stop/restart of the systray manager