# coding=utf-8

"""
This file is part of OpenSesame.

OpenSesame is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

OpenSesame is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with OpenSesame.  If not, see <http://www.gnu.org/licenses/>.
"""

from libqtopensesame.extensions import base_extension
from libqtopensesame.misc import display
from libqtopensesame.misc.translate import translation_context
_ = translation_context(u'system_check', category=u'extension')


class system_check(base_extension):

	def event_startup(self):

		"""
		desc:
			Performs several checks when OpenSesame is started. For now, it only
			checks whether the display is scaled or not, and if so, provides a
			warning because this may affect how stimuli look during the
			experiment.
		"""

		if display.display_scaling != 1:
			self.extension_manager.fire(
				u'notify',
				message=_(
					u'Display scaling is set to %d%% by the operating system. '
					u'This may affect the appearance of your experiment.'
				) % (100*display.display_scaling),
				category=u'warning',
				timeout=5000
			)
