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Old 03-08-2011, 07:49 AM   #1
chewi
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Question Adding date (and maybe other info) to custom cover image

When using the default cover image, the name of newspaper/magazine and the date are automatically added over it:



Is it possible (by placing some code in recipe) to add the date or any other info over the custom cover image?
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Old 03-08-2011, 10:13 AM   #2
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Override the default_cover method in your recipe
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Old 03-08-2011, 11:32 AM   #3
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Question

As I understand, this code is sample

Spoiler:
def default_cover(self, cover_file):
'''
Create a generic cover for recipes that dont have a cover
'''
try:
from calibre.ebooks import calibre_cover
title = self.title if isinstance(self.title, unicode) else \
self.title.decode(preferred_encoding, 'replace')
date = strftime(self.timefmt)
img_data = calibre_cover(title, date)
cover_file.write(img_data)
cover_file.flush()
except:
self.log.exception('Failed to generate default cover')
return False
return True


I want:
- use cover image from url 'http://pics.rbc.ru/img/top/2002/04/26/rbc-logo.gif'
- add borders like command cover_margins = (200, 300, '#ffffff') do
- add title and date to the resulting cover

Can you help with the code for all this steps?
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Old 03-08-2011, 04:22 PM   #4
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I would like to be able to do that as well - is there a good example in the recipes directory of a custom cover from a url that adds a date and/or a time stamp to the cover image?

I tried doing a search and couldn't find any - probably not searching for the right terms.

Thanks
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Old 03-10-2011, 12:26 PM   #5
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chewi,

If you're still looking at this, I got my custom cover to work in a limited way. I used the nation_ke recipe (my recipe collects sports feeds from Dallas teams). The only trouble I had is that I wanted to use a "taller image, but when I deviated from the size of the image they used (597 x 85) my image was auto-shrunk and looked bad. Anyway - hope this helps:

Spoiler:
import os
from calibre import strftime, __appname__, __version__
from calibre.web.feeds.news import BasicNewsRecipe
from calibre.constants import preferred_encoding
from calibre.utils.magick import Image

class AdvancedUserRecipe1295487944(BasicNewsRecipe):


__author__ = 'Joe Dworsky'

title = u'DMN Pro Sports Blogs'
description = 'News from Rangers, Mavericks, and Cowboys'
oldest_article = 7
max_articles_per_feed = 100
language = 'en'
country = 'US'
publication_type = 'newspaper'
publisher = 'none'
category = 'news, sports'
# cover_img_url = 'http://www.nation.co.ke/image/view/-/465228/medRes/33884/-/maxh/85/-/12e8pptz/-/Sunday_Logo.gif'
cover_img_url = 'http://img854.imageshack.us/img854/5519/3x85.jpg'
masthead_url = cover_img_url



no_stylesheets = True
extra_css = '''
h1{text-align:left;font-family:Arial,Helvetica,sans-serif; font-weight:bold;font-size:large;}
h2{text-align:left;font-family:Arial,Helvetica,sans-serif; font-weight:normal;font-size:small;}
p{text-align:left;font-family:Arial,Helvetica,sans-serif;font-size:small;}
body{text-align:left;font-family:Helvetica,Arial,sans-serif;font-size:small;}
'''

remove_tags = [dict(name='div', attrs={'class':'categoryGroup'})]
remove_tags.append(dict(name = 'div', attrs = {'class': 'archivesGroup'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'commentbox'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'cgmtitle'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'navigation breadcrumb'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'top-links'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'entry-footer'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'blog-body-heading'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'DMNContentModuleHdr'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'DMNContentModuleHdr1'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'slcgm_metadata cgminfo'}))
remove_tags.append(dict(name = 'div', attrs = {'class': 'groupHeadline-spt'}))
remove_tags.append(dict(name='img'))
remove_tags.append(dict(name = 'div', attrs = {'class': 'comments'}))

feeds = [(u'Rangers RSS', u'http://rangersblog.dallasnews.com/index.xml'), (u'Mavericks RSS', u'http://mavsblog.dallasnews.com/index.xml'), (u'Cowboys RSS', u'http://cowboysblog.dallasnews.com/index.xml')]

def get_cover_img_url(self):
return getattr(self, 'cover_img_url', None)

def _download_cover_img(self):
# hack to reuse download_cover
old_cu = None
try:
old_cu = self.get_cover_url()
except:
pass
new_cu = self.get_cover_img_url()
self.cover_url = new_cu
self._download_cover()

outfile = os.path.join(self.output_dir, 'cover_img.jpg')
self.prepare_masthead_image(self.cover_path, outfile)

self.cover_url = old_cu
self.cover_img_path = outfile

def download_cover_img(self):
try:
self._download_cover_img()
self.report_progress(1, _('Downloaded cover to %s') % self.cover_img_path)
except:
self.log.exception('Failed to download cover img')
self.cover_img_path = None

def prepare_cover_image(self, path_to_image, out_path):
img = Image()
img.open(path_to_image)
img.save(out_path)

def default_cover(self, cover_file):
'''
Create a generic cover for recipes that have a special cover img
'''
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')
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
font = ImageFont.truetype(font_path, 44)
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_file = I('library.png')
self.download_cover_img()
if getattr(self, 'cover_img_path', None) is not None:
logo_file = self.cover_img_path
self.report_progress(1, _('using cover img from %s') % logo_file)
logo = Image.open(logo_file, 'r')
width, height = logo.size
# left = max(int((COVER_WIDTH - width)/2.), 0)
# top = max(int((COVER_HEIGHT - height)/2.), 0)
left = max(10, 0)
top = max(150, 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 Exception, e:
self.log.exception('Failed to generate default cover ', e)
return False
return True

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Old 03-14-2011, 10:23 AM   #6
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joeindallas,

Thanx, but unfortunetely it doesn't work for me, default calibre cover appears.
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Old 03-14-2011, 05:20 PM   #7
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Are you running the sample I posted and get the default image, or did you try to adapt it for your use? If the latter, can you post it here? I'm probably the least qualified here to help, but I have been playing with this lately.
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Old 03-16-2011, 04:21 AM   #8
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joeindallas,

Can you post here the above /Rangers RSS/ as attached .recipe file?
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