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KF8 Output: Workaround Kindle Touch bug that causes the book to be rendered as black pages when a height os specified for <body>

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This commit is contained in:
Kovid Goyal 2012-05-03 17:28:11 +05:30
parent 632796e533
commit 226a26d208
6 changed files with 56 additions and 2 deletions
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12
src/calibre/customize/conversion.py
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@ -295,3 +295,15 @@ class OutputFormatPlugin(Plugin):
return self.oeb.metadata.publication_type and \
unicode(self.oeb.metadata.publication_type[0]).startswith('periodical:')
def specialize_css_for_output(self, log, opts, item, stylizer):
'''
Can be used to make changes to the css during the CSS flattening
process.
:param item: The item (HTML file) being processed
:param stylizer: A Stylizer object containing the flattened styles for
item. You can get the style for any element by stylizer.style(element).
'''
pass

8
src/calibre/ebooks/conversion/plugins/mobi_output.py
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@ -232,6 +232,10 @@ class MOBIOutput(OutputFormatPlugin):
writer(oeb, output_path)
extract_mobi(output_path, opts)
def specialize_css_for_output(self, log, opts, item, stylizer):
from calibre.ebooks.mobi.writer8.cleanup import CSSCleanup
CSSCleanup(log, opts)(item, stylizer)
class AZW3Output(OutputFormatPlugin):
name = 'AZW3 Output'
@ -298,4 +302,8 @@ class AZW3Output(OutputFormatPlugin):
kf8.write(output_path)
extract_mobi(output_path, opts)
def specialize_css_for_output(self, log, opts, item, stylizer):
from calibre.ebooks.mobi.writer8.cleanup import CSSCleanup
CSSCleanup(log, opts)(item, stylizer)

5
src/calibre/ebooks/conversion/plumber.py
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@ -4,6 +4,7 @@ __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
__docformat__ = 'restructuredtext en'
import os, re, sys, shutil, pprint
from functools import partial
from calibre.customize.conversion import OptionRecommendation, DummyReporter
from calibre.customize.ui import input_profiles, output_profiles, \
@ -1061,7 +1062,9 @@ OptionRecommendation(name='search_replace',
untable=self.output_plugin.file_type in ('mobi','lit'),
unfloat=self.output_plugin.file_type in ('mobi', 'lit'),
page_break_on_body=self.output_plugin.file_type in ('mobi',
'lit'))
'lit'),
specializer=partial(self.output_plugin.specialize_css_for_output,
self.log, self.opts))
flattener(self.oeb, self.opts)
self.opts.insert_blank_line = oibl

25
src/calibre/ebooks/mobi/writer8/cleanup.py Normal file
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@ -0,0 +1,25 @@
#!/usr/bin/env python
# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
from __future__ import (unicode_literals, division, absolute_import,
print_function)
__license__ = 'GPL v3'
__copyright__ = '2012, Kovid Goyal <kovid@kovidgoyal.net>'
__docformat__ = 'restructuredtext en'
from calibre.ebooks.oeb.base import XPath
class CSSCleanup(object):
def __init__(self, log, opts):
self.log, self.opts = log, opts
def __call__(self, item, stylizer):
if not hasattr(item.data, 'xpath'): return
# The Kindle touch displays all black pages if the height is set on
# body
for body in XPath('//h:body')(item.data):
style = stylizer.style(body)
style.drop('height')

3
src/calibre/ebooks/oeb/stylizer.py
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@ -494,6 +494,9 @@ class Style(object):
def set(self, prop, val):
self._style[prop] = val
def drop(self, prop):
self._style.pop(prop, None)
def _update_cssdict(self, cssdict):
self._style.update(cssdict)

5
src/calibre/ebooks/oeb/transforms/flatcss.py
View File

@ -102,12 +102,13 @@ def FontMapper(sbase=None, dbase=None, dkey=None):
class CSSFlattener(object):
def __init__(self, fbase=None, fkey=None, lineh=None, unfloat=False,
untable=False, page_break_on_body=False):
untable=False, page_break_on_body=False, specializer=None):
self.fbase = fbase
self.fkey = fkey
self.lineh = lineh
self.unfloat = unfloat
self.untable = untable
self.specializer = specializer
self.page_break_on_body = page_break_on_body
@classmethod
@ -423,6 +424,8 @@ class CSSFlattener(object):
for item in self.oeb.spine:
html = item.data
stylizer = self.stylizers[item]
if self.specializer is not None:
self.specializer(item, stylizer)
body = html.find(XHTML('body'))
fsize = self.context.dest.fbase
self.flatten_node(body, stylizer, names, styles, fsize, item.id)