Python script, ASCII text executable
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from pywayland.client import Display, EventQueue
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import wl4pgi
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import gi
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from gi.repository import GLib, Gio
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# The display is NOT converted to GObject since they have a lot of special behaviour. Also
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# you still have to roundtrip, but only after creating GObject adapters.
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display = Display()
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display.connect()
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event_queue = EventQueue(display)
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def on_geometry(output, x, y, pw, ph, subpixel, make, model, transform):
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print(output, x, y, pw, ph, subpixel, make, model, transform)
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def on_geometry_1(output, x, y, pw, ph, subpixel, make, model, transform):
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print("Since it uses GObject signals, multiple handlers work without problems")
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print(f"Also, custom attributes work: {output.test}. There's always zero or one GObjects "
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f"per Wayland object.")
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def on_global(registry, name, interface, version):
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if interface == "wl_output":
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# GObjects adapters only represent a proxy. Thus, to get the interface class for use
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# in this signal, you must go into pywayland.
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output = registry.bind(name, wl4pgi.wayland.WlOutput.interface_type, version)
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output.test = 0
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# Multiple handlers, transparently and with a single display and a single registry.
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output.connect("geometry", on_geometry)
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output.connect("geometry", on_geometry_1)
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display.roundtrip()
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# Starting from the registry, operation is within PyGObject.
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registry = wl4pgi.wayland.WlRegistry(display.get_registry())
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registry.connect("global", on_global)
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display.roundtrip()
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# The next parts would be removed for GTK integration.
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def on_display_event(self, source, condition):
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if condition & GLib.IO_IN:
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self.display.dispatch(queue=self.event_queue)
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return True
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fd = display.get_fd()
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GLib.io_add_watch(fd, GLib.IO_IN, on_display_event)
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main_loop = GLib.MainLoop()
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main_loop.run()
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