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MOBI Output: Remove transparencies from images. Fixes #6943 (lit conversion - problem with pictures)

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Kovid Goyal 2010-10-01 10:30:21 -06:00
parent 0ff8bd1863
commit 5471913bba
1 changed files with 19 additions and 0 deletions
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19
src/calibre/ebooks/mobi/output.py
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@ -41,6 +41,24 @@ class MOBIOutput(OutputFormatPlugin):
), ),
]) ])
def remove_image_transparencies(self):
from calibre.utils.magick.draw import save_cover_data_to
for item in self.oeb.manifest:
if item.media_type.startswith('image'):
raw = item.data
ext = item.media_type.split('/')[-1].lower()
if ext not in ('png', 'gif') or not raw:
continue
try:
data = save_cover_data_to(raw, 'img.'+ext, return_data=True)
except:
self.log.exception('Failed to remove transparency from',
item.href)
data = None
if data is not None:
item.data = data
item.unload_data_from_memory()
def check_for_periodical(self): def check_for_periodical(self):
if self.oeb.metadata.publication_type and \ if self.oeb.metadata.publication_type and \
unicode(self.oeb.metadata.publication_type[0]).startswith('periodical:'): unicode(self.oeb.metadata.publication_type[0]).startswith('periodical:'):
@ -160,6 +178,7 @@ class MOBIOutput(OutputFormatPlugin):
from calibre.ebooks.oeb.transforms.rasterize import SVGRasterizer, Unavailable from calibre.ebooks.oeb.transforms.rasterize import SVGRasterizer, Unavailable
from calibre.ebooks.oeb.transforms.htmltoc import HTMLTOCAdder from calibre.ebooks.oeb.transforms.htmltoc import HTMLTOCAdder
from calibre.customize.ui import plugin_for_input_format from calibre.customize.ui import plugin_for_input_format
self.remove_image_transparencies()
imagemax = PALM_MAX_IMAGE_SIZE if opts.rescale_images else None imagemax = PALM_MAX_IMAGE_SIZE if opts.rescale_images else None
if not opts.no_inline_toc: if not opts.no_inline_toc:
tocadder = HTMLTOCAdder(title=opts.toc_title) tocadder = HTMLTOCAdder(title=opts.toc_title)