Added experimental image renderer

modules/inkycal_image.py

@@ -0,0 +1,83 @@
+#!/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)
+