GTK programmatic iconification of the deepin-music window does not work

[totaam]

Issue migrated from trac ticket # 2680

component: platforms | priority: critical | resolution: upstream

2020-03-25 12:30:39: antoine created the issue

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Tested with 4.0-r25775 on the old build VM (10.11.x) and the new one (10.14.x #2505). Only works on the former.

Not sure what to do:

• make the release builds using the old VM?
• release without iconification support
• find the bug (hard?)

[totaam]

The "iconify" button in the "window states" toolbox does work, both running native and through xpra, so there must be something different about the deepin-music window I've used for testing.

[totaam]

Will release with the "new" VM and fix later..

[totaam]

Found the bug using the xpra toolbox "states" tool, GTK fails to minimize windows which are not decorated.

Here's the reproducer:

import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk

def main():
	w = Gtk.Window(type=Gtk.WindowType.TOPLEVEL)
	w.set_title("Window Iconify")
	w.set_size_request(320, 200)
	w.set_position(Gtk.WindowPosition.CENTER)
	w.set_decorated(False)
	w.connect("delete_event", Gtk.main_quit)
	b = Gtk.Button(label="Iconify")
	b.connect('clicked', lambda b : w.iconify())
	w.add(b)
	w.show_all()
	Gtk.main()

if __name__ == "__main__":
	main()

[totaam]

Reported upstream: undecorated windows can no longer be iconified on macos

(see also #2822)