47 lines
1.2 KiB
Python
47 lines
1.2 KiB
Python
"""
|
|
weasyprint.media_queries
|
|
------------------------
|
|
|
|
This module handles media queries.
|
|
|
|
https://www.w3.org/TR/mediaqueries-4/
|
|
|
|
:copyright: Copyright 2011-2018 Simon Sapin and contributors, see AUTHORS.
|
|
:license: BSD, see LICENSE for details.
|
|
|
|
"""
|
|
|
|
import tinycss2
|
|
|
|
from ..logger import LOGGER
|
|
from .utils import remove_whitespace, split_on_comma
|
|
|
|
|
|
def evaluate_media_query(query_list, device_media_type):
|
|
"""Return the boolean evaluation of `query_list` for the given
|
|
`device_media_type`.
|
|
|
|
:attr query_list: a cssutilts.stlysheets.MediaList
|
|
:attr device_media_type: a media type string (for now)
|
|
|
|
"""
|
|
# TODO: actual support for media queries, not just media types
|
|
return 'all' in query_list or device_media_type in query_list
|
|
|
|
|
|
def parse_media_query(tokens):
|
|
tokens = remove_whitespace(tokens)
|
|
if not tokens:
|
|
return ['all']
|
|
else:
|
|
media = []
|
|
for part in split_on_comma(tokens):
|
|
types = [token.type for token in part]
|
|
if types == ['ident']:
|
|
media.append(part[0].lower_value)
|
|
else:
|
|
LOGGER.warning(
|
|
'Expected a media type, got %s', tinycss2.serialize(part))
|
|
return
|
|
return media
|