make the default iconify delay configurable

xpra/client/gtk3/gtk_client_window_base.py

@@ -113,6 +113,7 @@ def can_set_workspace():
 REFRESH_MAXIMIZED = envbool("XPRA_REFRESH_MAXIMIZED", True)
 UNICODE_KEYNAMES = envbool("XPRA_UNICODE_KEYNAMES", False)
 SMOOTH_SCROLL = envbool("XPRA_SMOOTH_SCROLL", True)
+ICONIFY_LATENCY = envint("XPRA_ICONIFY_LATENCY", 150)
 
 WINDOW_OVERFLOW_TOP = envbool("XPRA_WINDOW_OVERFLOW_TOP", False)
 AWT_RECENTER = envbool("XPRA_AWT_RECENTER", True)
@@ -1064,12 +1065,13 @@ def schedule_send_iconify(self) -> None:
         #calculate a good delay to prevent races causing minimize/unminimize loops:
         if self._client.readonly:
             return
-        delay = 150
-        spl = tuple(self._client.server_ping_latency)
-        if spl:
-            worst = max(x[1] for x in self._client.server_ping_latency)
-            delay += int(1000*worst)
-            delay = min(1000, delay)
+        delay = ICONIFY_LATENCY
+        if delay>0:
+            spl = tuple(self._client.server_ping_latency)
+            if spl:
+                worst = max(x[1] for x in self._client.server_ping_latency)
+                delay += int(1000*worst)
+                delay = min(1000, delay)
         statelog("telling server about iconification with %sms delay", delay)
         self.send_iconify_timer = self.timeout_add(delay, self.send_iconify)