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leech/ebook/cover.py

59 lines
2 KiB
Python

from PIL import Image, ImageDraw
from io import BytesIO
import textwrap
import requests
import logging
from . import image
logger = logging.getLogger(__name__)
def make_cover(title, author, width=600, height=800, fontname="Helvetica", fontsize=40, bgcolor=(120, 20, 20), textcolor=(255, 255, 255), wrapat=30):
img = Image.new("RGBA", (width, height), bgcolor)
draw = ImageDraw.Draw(img)
title = textwrap.fill(title, wrapat)
author = textwrap.fill(author, wrapat)
font = image._safe_font(fontname, size=fontsize)
title_size = image.textsize(draw, title, font=font)
image.draw_text_outlined(draw, ((width - title_size[0]) / 2, 100), title, textcolor, font=font)
# draw.text(((width - title_size[0]) / 2, 100), title, textcolor, font=font)
font = image._safe_font(fontname, size=fontsize - 2)
author_size = image.textsize(draw, author, font=font)
image.draw_text_outlined(draw, ((width - author_size[0]) / 2, 100 + title_size[1] + 70), author, textcolor, font=font)
output = BytesIO()
img.save(output, "PNG")
output.name = 'cover.png'
# writing left the cursor at the end of the file, so reset it
output.seek(0)
return output
def make_cover_from_url(url, title, author):
try:
logger.info("Downloading cover from " + url)
img = requests.Session().get(url)
cover = BytesIO(img.content)
imgformat = Image.open(cover).format
# The `Image.open` read a few bytes from the stream to work out the
# format, so reset it:
cover.seek(0)
if imgformat != "PNG":
cover = image._convert_to_new_format(cover, "PNG")
except Exception as e:
logger.info("Encountered an error downloading cover: " + str(e))
cover = make_cover(title, author)
return cover
if __name__ == '__main__':
f = make_cover('Test of a Title which is quite long and will require multiple lines', 'Some Dude')
with open('output.png', 'wb') as out:
out.write(f.read())