98 lines
3.1 KiB
Python
98 lines
3.1 KiB
Python
"""
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Textfile module for InkyCal Project
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Reads data from a plain .txt file and renders it on the display.
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If the content is too long, it will be truncated from the back until it fits
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Copyright by aceinnolab
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"""
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from urllib.request import urlopen
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from inkycal.custom import *
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from inkycal.modules.template import inkycal_module
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logger = logging.getLogger(__name__)
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class TextToDisplay(inkycal_module):
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"""TextToDisplay module - Display text from a local file on the display
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"""
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def __init__(self, config):
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"""Initialize inkycal_textfile_to_display module"""
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super().__init__(config)
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config = config['config']
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# required parameters
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self.filepath = config["filepath"]
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self.make_request = True if self.filepath.startswith("https://") else False
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# give an OK message
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print(f'{__name__} loaded')
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def _validate(self):
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"""Validate module-specific parameters"""
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# ensure we only use a single file
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assert (self.filepath and len(self.filepath) == 1)
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def generate_image(self):
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"""Generate image for this module"""
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# Define new image size with respect to padding
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im_width = int(self.width - (2 * self.padding_left))
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im_height = int(self.height - (2 * self.padding_top))
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im_size = im_width, im_height
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logger.info(f'Image size: {im_size}')
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# Create an image for black pixels and one for coloured pixels
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im_black = Image.new('RGB', size=im_size, color='white')
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im_colour = Image.new('RGB', size=im_size, color='white')
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# Set some parameters for formatting feeds
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line_spacing = 4
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text_bbox_height = self.font.getbbox("hg")
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line_height = text_bbox_height[3] + line_spacing
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line_width = im_width
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max_lines = im_height // line_height
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# Calculate padding from top so the lines look centralised
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spacing_top = int(im_height % line_height / 2)
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# Calculate line_positions
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line_positions = [
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(0, spacing_top + _ * line_height) for _ in range(max_lines)]
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if self.make_request:
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logger.info("Detected http path, making request")
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# Check if internet is available
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if internet_available():
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logger.info('Connection test passed')
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else:
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raise NetworkNotReachableError
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file_content = urlopen(self.filepath).read().decode('utf-8')
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else:
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# Create list containing all lines
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with open(self.filepath, 'r') as file:
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file_content = file.read()
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fitted_content = text_wrap(file_content, font=self.font, max_width=im_width)
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# Trim down the list to the max number of lines
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del fitted_content[max_lines:]
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# Write feeds on image
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for index, line in enumerate(fitted_content):
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write(
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im_black,
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line_positions[index],
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(line_width, line_height),
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line,
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font=self.font,
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alignment='left'
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)
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# return images
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return im_black, im_colour
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