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MOBI Output: Fix a regression that caused the generated thumbnail embedded in calibre produced MOBI files to be a large, low quality image instead of a small, high quality image. Fixes #954254 (No book covers in Kindle for Android 3.4.2)

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This commit is contained in:
Kovid Goyal 2012-03-15 20:03:46 +05:30
parent 46f9a5b04a
commit 817f7aba60
1 changed files with 8 additions and 2 deletions
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src/calibre/ebooks/mobi/utils.py
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@ -124,12 +124,18 @@ def rescale_image(data, maxsizeb=IMAGE_MAX_SIZE, dimen=None):
to JPEG. Ensure the resultant image has a byte size less than
maxsizeb.
If dimen is not None, generate a thumbnail of width=dimen, height=dimen
If dimen is not None, generate a thumbnail of
width=dimen, height=dimen or width, height = dimen (depending on the type
of dimen)
Returns the image as a bytestring
'''
if dimen is not None:
data = thumbnail(data, width=dimen, height=dimen,
if hasattr(dimen, '__len__'):
width, height = dimen
else:
width = height = dimen
data = thumbnail(data, width=width, height=height,
compression_quality=90)[-1]
else:
# Replace transparent pixels with white pixels and convert to JPEG