69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
#!/usr/bin/env python3
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"""Capture one frame through the Jarvis GNOME Shell helper, then the Screenshot portal."""
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import sys
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from gi.repository import Gio, GLib
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target = sys.argv[1]
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bus = Gio.bus_get_sync(Gio.BusType.SESSION, None)
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def jarvis_shell_screenshot():
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proxy = Gio.DBusProxy.new_sync(
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bus, Gio.DBusProxyFlags.NONE, None,
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'io.qvac.Jarvis.Shell', '/io/qvac/Jarvis/Shell',
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'io.qvac.Jarvis.Shell', None,
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)
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path = proxy.call_sync(
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'Screenshot',
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GLib.Variant('(s)', (target,)),
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Gio.DBusCallFlags.NONE,
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5000,
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None,
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).unpack()[0]
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if not path:
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raise RuntimeError('Jarvis Shell screenshot returned no path')
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return path
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def portal_screenshot():
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proxy = Gio.DBusProxy.new_sync(
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bus, Gio.DBusProxyFlags.NONE, None,
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'org.freedesktop.portal.Desktop', '/org/freedesktop/portal/desktop',
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'org.freedesktop.portal.Screenshot', None,
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)
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options = {'interactive': GLib.Variant('b', False)}
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try:
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request = proxy.call_sync('Screenshot', GLib.Variant('(a{sv})', (options,)), Gio.DBusCallFlags.NONE, 8000, None).unpack()[0]
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except Exception:
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request = proxy.call_sync('Screenshot', GLib.Variant('(sa{sv})', ('', options)), Gio.DBusCallFlags.NONE, 8000, None).unpack()[0]
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loop = GLib.MainLoop()
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result = {'uri': None}
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def response(_conn, _sender, _path, _interface, _member, params):
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code, values = params.unpack()
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if code == 0:
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result['uri'] = values.get('uri')
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loop.quit()
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sub = bus.signal_subscribe(None, 'org.freedesktop.portal.Request', 'Response', request, None, Gio.DBusSignalFlags.NONE, response)
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GLib.timeout_add(4000, loop.quit)
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loop.run()
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bus.signal_unsubscribe(sub)
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if not result['uri']:
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raise RuntimeError('Screenshot portal returned no image URI')
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ok, contents, _etag = Gio.File.new_for_uri(result['uri']).load_contents(None)
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if not ok:
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raise RuntimeError('could not read screenshot portal URI')
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Gio.File.new_for_path(target).replace_contents(contents, None, False, Gio.FileCreateFlags.REPLACE_DESTINATION, None)
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return target
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errors = []
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for capture in (jarvis_shell_screenshot, portal_screenshot):
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try:
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print(capture())
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raise SystemExit(0)
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except Exception as exc:
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errors.append(f'{capture.__name__}: {exc}')
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raise SystemExit('; '.join(errors) or 'screenshot unavailable')
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