Disabled cropping and page number cutting for blank pages (close #43)

README.md

@@ -178,6 +178,7 @@ The app relies and includes the following scripts/binaries:
 * Kindle Fire support (color ePub/Mobi)
 * Panel View support for horizontal content
 * Fixed panel order for horizontal pages when --rotate is enabled
+* Disabled cropping and page number cutting for blank pages
 
 ## COPYRIGHT
 

kcc/image.py

@@ -20,7 +20,7 @@ __copyright__ = '2012-2013, Ciro Mattia Gonano <ciromattia@gmail.com>'
 __docformat__ = 'restructuredtext en'
 
 import os
-from PIL import Image, ImageOps, ImageStat
+from PIL import Image, ImageOps, ImageStat, ImageChops
 
 
 class ImageFlags:
@@ -237,6 +237,7 @@ class ComicPage:
             return None
 
     def cutPageNumber(self):
+        if ImageChops.invert(self.image).getbbox() is not None:
             widthImg, heightImg = self.image.size
             delta = 2
             diff = delta
@@ -290,6 +291,7 @@ class ComicPage:
         return self.image
 
     def cropWhiteSpace(self, threshold):
+        if ImageChops.invert(self.image).getbbox() is not None:
             widthImg, heightImg = self.image.size
             delta = 10
             diff = delta