36 lines
1.7 KiB
Python
36 lines
1.7 KiB
Python
#!/usr/bin/env python3
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"""A stand-in org.freedesktop.ScreenSaver for the test stand's D-Bus (tools/linux/stand.sh): prints every Inhibit and
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UnInhibit, so the app's screensaver inhibition (L9) can be checked without the user's desktop.
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stand.sh bus python3 tools/linux/fake_screensaver.py > log &
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"""
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from gi.repository import Gio, GLib
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XML = """<node><interface name="org.freedesktop.ScreenSaver">
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<method name="Inhibit"><arg type="s" direction="in"/><arg type="s" direction="in"/><arg type="u" direction="out"/></method>
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<method name="UnInhibit"><arg type="u" direction="in"/></method>
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</interface></node>"""
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cookies = iter(range(1, 1 << 31))
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def call(conn, sender, path, iface, method, args, invocation):
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if method == "Inhibit":
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cookie = next(cookies)
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print(f"Inhibit {args.unpack()} from {sender} -> {cookie}", flush=True)
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invocation.return_value(GLib.Variant("(u)", (cookie,)))
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else:
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print(f"UnInhibit {args.unpack()[0]} from {sender}", flush=True)
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invocation.return_value(None)
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def acquired(conn, name):
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conn.register_object("/org/freedesktop/ScreenSaver", Gio.DBusNodeInfo.new_for_xml(XML).interfaces[0], call, None, None)
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# The real service drops an inhibition when its owner leaves the bus; show that moment.
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conn.signal_subscribe("org.freedesktop.DBus", "org.freedesktop.DBus", "NameOwnerChanged", None, None, 0,
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lambda c, s, p, i, sig, a: a.unpack()[2] == "" and a.unpack()[0].startswith(":") and print(f"gone {a.unpack()[0]}", flush=True))
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print("ready", flush=True)
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Gio.bus_own_name(Gio.BusType.SESSION, "org.freedesktop.ScreenSaver", 0, acquired, None, None)
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GLib.MainLoop().run()
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