def enable(self, _exaile):
"""
Enables the on screen display plugin
"""
do_assert(self.__window is None)
# Note: Moving windows will not work on Wayland by design, because Wayland does not know
# absolute window positioning. Gtk.Window.move() does not work there.
# See https://blog.gtk.org/2016/07/15/future-of-relative-window-positioning/
# and https://lists.freedesktop.org/archives/wayland-devel/2015-September/024464.html
if guiutil.platform_is_wayland():
raise EnvironmentError(
"This plugin does not work on Wayland backend.")
# Cached option values
self.__options = {
'background': None,
'display_duration': None,
'border_radius': None,
'use_alpha': False,
}
self.__css_provider = Gtk.CssProvider()
if sys.platform.startswith("win32"):
# Setting opacity on Windows crashes with segfault,
# see https://bugzilla.gnome.org/show_bug.cgi?id=674449
self.__options['use_alpha'] = False
LOGGER.warn(
"OSD: Disabling alpha channel because it is not supported on Windows."
)
else:
self.__options['use_alpha'] = True
def is_supported():
"""
On some platforms (e.g. Linux+Wayland) tray icons are not supported.
"""
supported = not guiutil.platform_is_wayland()
if not supported:
logger.debug("No tray icon support on this platform")
return supported
def is_supported():
"""
On some platforms (e.g. Linux+Wayland) tray icons are not supported.
"""
supported = not guiutil.platform_is_wayland()
if not supported:
logger.debug("No tray icon support on this platform")
return supported