135 lines
4.2 KiB
Python
135 lines
4.2 KiB
Python
#!/usr/bin/python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
RSS module for Inky-Calendar Project
|
|
Copyright by aceisace
|
|
"""
|
|
|
|
from inkycal.modules.template import inkycal_module
|
|
from inkycal.custom import *
|
|
|
|
from random import shuffle
|
|
try:
|
|
import feedparser
|
|
except ImportError:
|
|
print('feedparser is not installed! Please install with:')
|
|
print('pip3 install feedparser')
|
|
|
|
filename = os.path.basename(__file__).split('.py')[0]
|
|
logger = logging.getLogger(filename)
|
|
logger.setLevel(level=logging.ERROR)
|
|
|
|
class RSS(inkycal_module):
|
|
"""RSS class
|
|
parses rss/atom feeds from given urls
|
|
"""
|
|
|
|
def __init__(self, section_size, section_config):
|
|
"""Initialize inkycal_rss module"""
|
|
|
|
super().__init__(section_size, section_config)
|
|
|
|
# Module specific parameters
|
|
required = ['rss_urls']
|
|
for param in required:
|
|
if not param in section_config:
|
|
raise Exception('config is missing {}'.format(param))
|
|
|
|
# module name
|
|
self.name = filename
|
|
|
|
# module specific parameters
|
|
self.shuffle_feeds = True
|
|
|
|
# give an OK message
|
|
print('{0} loaded'.format(self.name))
|
|
|
|
def _validate(self):
|
|
"""Validate module-specific parameters"""
|
|
if not isinstance(self.shuffle_feeds, bool):
|
|
print('shuffle_feeds has to be a boolean: True/False')
|
|
|
|
|
|
def generate_image(self):
|
|
"""Generate image for this module"""
|
|
|
|
# Define new image size with respect to padding
|
|
im_width = int(self.width - (self.width * 2 * self.margin_x))
|
|
im_height = int(self.height - (self.height * 2 * self.margin_y))
|
|
im_size = im_width, im_height
|
|
logger.info('image size: {} x {} px'.format(im_width, im_height))
|
|
|
|
# Create an image for black pixels and one for coloured pixels
|
|
im_black = Image.new('RGB', size = im_size, color = 'white')
|
|
im_colour = Image.new('RGB', size = im_size, color = 'white')
|
|
|
|
# Check if internet is available
|
|
if internet_available() == True:
|
|
logger.info('Connection test passed')
|
|
else:
|
|
raise Exception('Network could not be reached :/')
|
|
|
|
|
|
# Set some parameters for formatting rss feeds
|
|
line_spacing = 1
|
|
line_height = self.font.getsize('hg')[1] + line_spacing
|
|
line_width = im_width
|
|
max_lines = (im_height // (self.font.getsize('hg')[1] + line_spacing))
|
|
|
|
# Calculate padding from top so the lines look centralised
|
|
spacing_top = int( im_height % line_height / 2 )
|
|
|
|
# Calculate line_positions
|
|
line_positions = [
|
|
(0, spacing_top + _ * line_height ) for _ in range(max_lines)]
|
|
|
|
# Create list containing all rss-feeds from all rss-feed urls
|
|
parsed_feeds = []
|
|
for feeds in self.config['rss_urls']:
|
|
text = feedparser.parse(feeds)
|
|
for posts in text.entries:
|
|
parsed_feeds.append('•{0}: {1}'.format(posts.title, posts.summary))
|
|
|
|
self._parsed_feeds = parsed_feeds
|
|
|
|
# Shuffle the list to prevent showing the same content
|
|
if self.shuffle_feeds == True:
|
|
shuffle(parsed_feeds)
|
|
|
|
# Trim down the list to the max number of lines
|
|
del parsed_feeds[max_lines:]
|
|
|
|
# Wrap long text from feeds (line-breaking)
|
|
flatten = lambda z: [x for y in z for x in y]
|
|
filtered_feeds, counter = [], 0
|
|
|
|
for posts in parsed_feeds:
|
|
wrapped = text_wrap(posts, font = self.font, max_width = line_width)
|
|
counter += len(wrapped)
|
|
if counter < max_lines:
|
|
filtered_feeds.append(wrapped)
|
|
filtered_feeds = flatten(filtered_feeds)
|
|
self._filtered_feeds = filtered_feeds
|
|
|
|
# Check if feeds could be parsed and can be displayed
|
|
if len(filtered_feeds) == 0 and len(parsed_feeds) > 0:
|
|
print('Feeds could be parsed, but the text is too long to be displayed:/')
|
|
elif len(filtered_feeds) == 0 and len(parsed_feeds) == 0:
|
|
print('No feeds could be parsed :/')
|
|
else:
|
|
# Write rss-feeds on image
|
|
for _ in range(len(filtered_feeds)):
|
|
write(im_black, line_positions[_], (line_width, line_height),
|
|
filtered_feeds[_], font = self.font, alignment= 'left')
|
|
|
|
# Cleanup
|
|
del filtered_feeds, parsed_feeds, wrapped, counter, text
|
|
|
|
# Save image of black and colour channel in image-folder
|
|
im_black.save(images+self.name+'.png', 'PNG')
|
|
im_colour.save(images+self.name+'_colour.png', 'PNG')
|
|
|
|
if __name__ == '__main__':
|
|
print('running {0} in standalone/debug mode'.format(filename))
|