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Fix cover not displaying in Adobe DE for epub files

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This commit is contained in:
Kovid Goyal 2008-11-13 15:05:20 -08:00
parent 69671e1386
commit de679ed342
1 changed files with 37 additions and 41 deletions
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74
src/calibre/ebooks/epub/from_html.py
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@ -35,10 +35,6 @@ Conversion of HTML/OPF files follows several stages:
import os, sys, cStringIO, logging, re
from lxml.etree import XPath
try:
from PIL import Image as PILImage
except ImportError:
import Image as PILImage
from calibre.ebooks.html import Processor, merge_metadata, get_filelist,\
opf_traverse, create_metadata, rebase_toc
@ -134,16 +130,6 @@ def parse_content(filelist, opts, tdir):
return resource_map, hp.htmlfile_map, toc, stylesheet_map
def resize_cover(im, opts):
width, height = im.size
dw, dh = (opts.profile.screen_size[0]-width)/float(width), (opts.profile.screen_size[1]-height)/float(height)
delta = min(dw, dh)
if delta > 0:
nwidth = int(width + delta*(width))
nheight = int(height + delta*(height))
im = im.resize((int(nwidth), int(nheight)), PILImage.ANTIALIAS)
return im
TITLEPAGE = '''\
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
@ -162,6 +148,31 @@ TITLEPAGE = '''\
</html>
'''
def create_cover_image(src, dest, screen_size):
from PyQt4.Qt import QApplication, QImage, Qt
if QApplication.instance() is None:
app = QApplication([])
app
im = QImage()
try:
im.load(src)
if im.isNull():
raise ValueError
if screen_size is not None:
width, height = im.width(), im.height()
dw, dh = (screen_size[0]-width)/float(width), (screen_size[1]-height)/float(height)
delta = min(dw, dh)
if delta > 0:
nwidth = int(width + delta*(width))
nheight = int(height + delta*(height))
im = im.scaled(int(nwidth), int(nheight), Qt.IgnoreAspectRatio, Qt.SmoothTransformation)
im.save(dest)
except:
import traceback
traceback.print_exc()
return False
return True
def process_title_page(mi, filelist, htmlfilemap, opts, tdir):
old_title_page = None
f = lambda x : os.path.normcase(os.path.normpath(x))
@ -176,35 +187,20 @@ def process_title_page(mi, filelist, htmlfilemap, opts, tdir):
cpath = '/'.join(('resources', '_cover_.jpg'))
cover_dest = os.path.join(tdir, 'content', *cpath.split('/'))
with open(cover_dest, 'wb') as f_cover_dest:
if metadata_cover is not None:
with open(metadata_cover, 'rb') as src:
try:
im = PILImage.open(src).convert('RGB')
if opts.profile.screen_size is not None:
im = resize_cover(im, opts)
im.save(f_cover_dest, format='jpeg')
metadata_cover = im
except:
metadata_cover = None
if metadata_cover is not None:
if not create_cover_image(metadata_cover, cover_dest, opts.profile.screen_size):
metadata_cover = None
specified_cover = opts.cover
if specified_cover and not os.path.exists(specified_cover):
specified_cover = opts.cover
if specified_cover and not os.path.exists(specified_cover):
specified_cover = None
if specified_cover is not None:
if not create_cover_image(specified_cover, cover_dest, opts.profile.screen_size):
specified_cover = None
if specified_cover is not None:
with open(specified_cover, 'rb') as src:
try:
im = PILImage.open(src).convert('RGB')
if opts.profile.screen_size is not None:
im = resize_cover(im, opts)
specified_cover = im
im.save(f_cover_dest, format='jpeg')
except:
specified_cover = None
cover = metadata_cover if specified_cover is None or (opts.prefer_metadata_cover and metadata_cover is not None) else specified_cover
cover = metadata_cover if specified_cover is None or (opts.prefer_metadata_cover and metadata_cover is not None) else specified_cover
if hasattr(cover, 'save'):
if cover is not None:
titlepage = TITLEPAGE%cpath
tp = 'calibre_title_page.html' if old_title_page is None else old_title_page
tppath = os.path.join(tdir, 'content', tp)