Added rendering support (work in progress)

This commit is contained in:
Ace 2020-05-26 19:11:52 +02:00
parent c4bb24bef9
commit 877da1614a
2 changed files with 92 additions and 0 deletions

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from .epaper import Display

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inkycal/display/epaper.py Normal file
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#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
Inky-Calendar epaper functions
Copyright by aceisace
"""
class Display:
"""Display class for inkycal
Handles rendering on display"""
_allowed_models = []
def __init__(self, epaper_model, supports_colour = False):
"""Load the drivers for this epaper model"""
self.supports_colour = supports_colour
try:
importer = 'from inkycal.display.drivers import {} as driver'.format(
epaper_model)
exec(importer)
except ModuleNotFoundError:
raise Exception('This module is not supported. Check your spellings?')
except FileNotFoundError:
raise Exception('SPI could not be found. Please check if SPI is enabled')
self._epaper = driver.EPD()
def render(self, im_black, im_colour = None):
"""Render an image on the epaper
im_colour is required for three-colour epapers"""
epaper = self._epaper
if self.supports_colour == False:
print('Initialising..', end = '')
epaper.init()
print('Updating display......', end = '')
epaper.display(epaper.getbuffer(im_black))
print('Done')
elif self.supports_colour == True:
if not im_colour:
raise Exception('im_colour is required for coloured epaper displays')
print('Initialising..', end = '')
epaper.init()
print('Updating display......', end = '')
epaper.display(epaper.getbuffer(im_black))
print('Done')
print('Sending E-Paper to deep sleep...', end = '')
epaper.sleep()
print('Done')
def calibrate(self, cycles=3):
"""Flush display with single colour to prevent burn-ins (ghosting)
cycles -> int. How many times should each colour be flushed?
recommended cycles = 3"""
epaper = self._epaper
epaper.init()
white = Image.new('1', (display_width, display_height), 'white')
black = Image.new('1', (display_width, display_height), 'black')
print('----------Started calibration of ePaper display----------')
if self.supports_colour == True:
for _ in range(cycles):
print('Calibrating...', end= ' ')
print('black...', end= ' ')
epaper.display(epaper.getbuffer(black), epaper.getbuffer(white))
print('colour...', end = ' ')
epaper.display(epaper.getbuffer(white), epaper.getbuffer(black))
print('white...')
epaper.display(epaper.getbuffer(white), epaper.getbuffer(white))
print('Cycle {0} of {1} complete'.format(_+1, no_of_cycles))
if self.supports_colour == False:
for _ in range(no_of_cycles):
print('Calibrating...', end= ' ')
print('black...', end = ' ')
epaper.display(epaper.getbuffer(black))
print('white...')
epaper.display(epaper.getbuffer(white)),
print('Cycle {0} of {1} complete'.format(_+1, no_of_cycles))
print('-----------Calibration complete----------')
epaper.sleep()