Added experimental image renderer

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Ace 2019-12-19 00:39:06 +01:00 committed by GitHub
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modules/inkycal_image.py Normal file
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#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
Experimental image module for Inky-Calendar software
Displays an image on the E-Paper. Currently only supports black and white
Copyright by aceisace
"""
from __future__ import print_function
from PIL import Image
from configuration import *
import os
import inkycal_drivers as drivers
display = drivers.EPD()
# Where is the image?
path = '/home/pi//Desktop/test.JPG'
class inkycal_image:
def __init__(self, path):
self.image = Image.open(path)
self.im_width = self.image.width
self.im_height = self.image.height
def check_mode(self):
if self.image.mode != 'RGB' or 'L' or '1':
print('Image mode not supported, converting')
self.image = self.image.convert('RGB')
def preview(self):
self.image.save(path+'temp.png')
os.system("gpicview "+path+'temp.png')
os.system('rm '+path+'temp.png')
def check_size(self, alignment = 'middle', padding_colour='white'):
if display_height < self.im_height or display_width < self.im_width:
print('Image too large for the display, cropping image')
if alignment == 'middle' or None:
x1 = int((self.im_width - display_width) / 2)
y1 = int((self.im_height - display_height) / 2)
x2,y2 = x1+display_width, y1+display_height
self.image = self.image.crop((x1,y1,x2,y2))
if alignment != 'middle' or None:
print('Sorry, this feature has not been implemented yet')
raise NotImplementedError
elif display_height > self.im_height and display_width > self.im_width:
print('Image smaller than display, shifting image to center')
x = int( (display_width - self.im_width) /2)
y = int( (display_height - self.im_height) /2)
canvas = Image.new('RGB', (display_width, display_height), color=padding_colour)
canvas.paste(self.image, (x,y))
self.image = canvas
else:
print('Image file exact. no further action required')
def auto_flip(self):
if self.im_height < self.im_width:
print('rotating image')
self.image = self.image.rotate(270, expand=True)
self.im_width = self.image.width
self.im_height = self.image.height
def to_mono(self):
self.image = self.image.convert('1', dither=True)
def prepare_image(self, alignment='middle'):
self.check_mode()
self.auto_flip()
self.check_size(alignment = alignment)
self.to_mono()
return self.image
#single line command:
display.show_image(inkycal_image(path).prepare_image(), reduce_colours=False)