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No longer need Qt to generate the default cover for news downloads

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Kovid Goyal 2010-02-20 13:04:02 -07:00
parent 13e3d2c610
commit b42671831e
2 changed files with 46 additions and 59 deletions
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resources/images/library.png
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Side by Side Swipe Overlay

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src/calibre/web/feeds/news.py
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@ -19,15 +19,13 @@ from calibre.ebooks.BeautifulSoup import BeautifulSoup, NavigableString, CData,
from calibre.ebooks.metadata.opf2 import OPFCreator
from calibre import entity_to_unicode
from calibre.web import Recipe
from calibre.ebooks import render_html
from calibre.ebooks.metadata.toc import TOC
from calibre.ebooks.metadata import MetaInformation
from calibre.web.feeds import feed_from_xml, templates, feeds_from_index, Feed
from calibre.web.fetch.simple import option_parser as web2disk_option_parser
from calibre.web.fetch.simple import RecursiveFetcher
from calibre.utils.threadpool import WorkRequest, ThreadPool, NoResultsPending
from calibre.ptempfile import PersistentTemporaryFile, \
PersistentTemporaryDirectory
from calibre.ptempfile import PersistentTemporaryFile
from calibre.utils.date import now as nowf
class BasicNewsRecipe(Recipe):
@ -928,63 +926,52 @@ class BasicNewsRecipe(Recipe):
'''
Create a generic cover for recipes that dont have a cover
'''
from calibre.gui2 import is_ok_to_use_qt
if not is_ok_to_use_qt():
return False
img_data = open(I('library.png'), 'rb').read()
tdir = PersistentTemporaryDirectory('_default_cover')
img = os.path.join(tdir, 'logo.png')
with open(img, 'wb') as g:
g.write(img_data)
img = os.path.basename(img)
html= u'''\
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<style type="text/css">
body {
background: white no-repeat fixed center center;
text-align: center;
vertical-align: center;
overflow: hidden;
font-size: 18px;
}
h1 { font-family: serif; }
h2, h4 { font-family: monospace; }
</style>
</head>
<body>
<h1>%(title)s</h1>
<br/><br/>
<div style="position:relative">
<div style="position: absolute; left: 0; top: 0; width:100%%; height:100%%; vertical-align:center">
<img src="%(img)s" alt="calibre" style="opacity:0.3"/>
</div>
<div style="position: absolute; left: 0; top: 0; width:100%%; height:100%%; vertical-align:center">
<h2>%(date)s</h2>
<br/><br/><br/><br/><br/>
<h3>%(author)s</h3>
<br/><br/></br/><br/><br/><br/><br/><br/><br/>
<h4>Produced by %(app)s</h4>
</div>
</div>
</body>
</html>
'''%dict(title=self.title if isinstance(self.title, unicode) else self.title.decode(preferred_encoding, 'replace'),
author=self.__author__ if isinstance(self.__author__, unicode) else self.__author__.decode(preferred_encoding, 'replace'),
date=strftime(self.timefmt),
app=__appname__ +' '+__version__,
img=img)
hf = os.path.join(tdir, 'cover.htm')
with open(hf, 'wb') as f:
f.write(html.encode('utf-8'))
renderer = render_html(hf)
if renderer.tb is not None:
self.log.warning('Failed to render default cover')
self.log.debug(renderer.tb)
else:
cover_file.write(renderer.data)
try:
try:
from PIL import Image, ImageDraw, ImageFont
Image, ImageDraw, ImageFont
except ImportError:
import Image, ImageDraw, ImageFont
font_path = P('fonts/liberation/LiberationSerif-Bold.ttf')
font = ImageFont.truetype(font_path, 48)
title = self.title if isinstance(self.title, unicode) else \
self.title.decode(preferred_encoding, 'replace')
date = strftime(self.timefmt)
app = '['+__appname__ +' '+__version__+']'
COVER_WIDTH, COVER_HEIGHT = 590, 750
img = Image.new('RGB', (COVER_WIDTH, COVER_HEIGHT), 'white')
draw = ImageDraw.Draw(img)
# Title
width, height = draw.textsize(title, font=font)
left = max(int((COVER_WIDTH - width)/2.), 0)
top = 15
draw.text((left, top), title, fill=(0,0,0), font=font)
bottom = top + height
# Date
font = ImageFont.truetype(font_path, 32)
width, height = draw.textsize(date, font=font)
left = max(int((COVER_WIDTH - width)/2.), 0)
draw.text((left, bottom+15), date, fill=(0,0,0), font=font)
# Vanity
font = ImageFont.truetype(font_path, 28)
width, height = draw.textsize(app, font=font)
left = max(int((COVER_WIDTH - width)/2.), 0)
top = COVER_HEIGHT - height - 15
draw.text((left, top), app, fill=(0,0,0), font=font)
# Logo
logo = Image.open(I('library.png'), 'r')
width, height = logo.size
left = max(int((COVER_WIDTH - width)/2.), 0)
top = max(int((COVER_HEIGHT - height)/2.), 0)
img.paste(logo, (left, top))
img = img.convert('RGB').convert('P', palette=Image.ADAPTIVE)
img.convert('RGB').save(cover_file, 'JPEG')
cover_file.flush()
except:
self.log.exception('Failed to generate default cover')
return False
return True
def get_masthead_title(self):