# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
#
+from __future__ import unicode_literals
+
import re
-import Image, ImageFont, ImageDraw, ImageFilter
-from StringIO import StringIO
+from PIL import Image, ImageFont, ImageDraw, ImageFilter
+from six import BytesIO
from librarian import get_resource, OutputFile, URLOpener
+class Metric(object):
+ """Gets metrics from an object, scaling it by a factor."""
+ def __init__(self, obj, scale):
+ self._obj = obj
+ self._scale = float(scale)
+
+ def __getattr__(self, name):
+ src = getattr(self._obj, name)
+ if src and self._scale:
+ return type(src)(self._scale * src)
+ else:
+ return src
+
+
class TextBox(object):
"""Creates an Image with a series of centered strings."""
line_width = self.draw.textsize(line, font=font)[0]
line = line.strip() + ' '
- pos_x = (self.max_width - line_width) / 2
+ pos_x = (self.max_width - line_width) // 2
if shadow_color:
self.shadow_draw.text(
author_lineskip = 40
author_color = '#000'
author_shadow = None
- author_font = None
+ author_font_ttf = get_resource('fonts/DejaVuSerif.ttf')
+ author_font_size = 30
title_top = 100
title_margin_left = 20
title_lineskip = 54
title_color = '#000'
title_shadow = None
- title_font = None
+ title_font_ttf = get_resource('fonts/DejaVuSerif.ttf')
+ title_font_size = 40
logo_bottom = None
logo_width = None
uses_dc_cover = False
format = 'JPEG'
+ scale = 1
+ scale_after = 1
exts = {
'JPEG': 'jpg',
'PNG': 'image/png',
}
- def __init__(self, book_info, format=None):
+ def __init__(self, book_info, format=None, width=None, height=None):
self.author = ", ".join(auth.readable() for auth in book_info.authors)
self.title = book_info.title
if format is not None:
self.format = format
+ if width and height:
+ self.height = int(round(height * self.width / width))
+ scale = max(float(width or 0) / self.width, float(height or 0) / self.height)
+ if scale >= 1:
+ self.scale = scale
+ elif scale:
+ self.scale_after = scale
def pretty_author(self):
"""Allows for decorating author's name."""
return self.title
def image(self):
- img = Image.new('RGB', (self.width, self.height), self.background_color)
+ metr = Metric(self, self.scale)
+ img = Image.new('RGB', (metr.width, metr.height), self.background_color)
if self.background_img:
background = Image.open(self.background_img)
del background
# WL logo
- if self.logo_width:
+ if metr.logo_width:
logo = Image.open(get_resource('res/wl-logo.png'))
- logo = logo.resize((self.logo_width, logo.size[1] * self.logo_width / logo.size[0]))
- img.paste(logo, ((self.width - self.logo_width) / 2, img.size[1] - logo.size[1] - self.logo_bottom))
+ logo = logo.resize((metr.logo_width, int(round(logo.size[1] * metr.logo_width / logo.size[0]))))
+ img.paste(logo, ((metr.width - metr.logo_width) // 2, img.size[1] - logo.size[1] - metr.logo_bottom))
- top = self.author_top
+ top = metr.author_top
tbox = TextBox(
- self.width - self.author_margin_left - self.author_margin_right,
- self.height - top,
+ metr.width - metr.author_margin_left - metr.author_margin_right,
+ metr.height - top,
)
- author_font = self.author_font or ImageFont.truetype(
- get_resource('fonts/DejaVuSerif.ttf'), 30)
- tbox.text(self.pretty_author(), self.author_color, author_font,
- self.author_lineskip, self.author_shadow)
+
+ author_font = ImageFont.truetype(
+ self.author_font_ttf, metr.author_font_size)
+ tbox.text(self.pretty_author(), self.author_color, author_font, metr.author_lineskip, self.author_shadow)
text_img = tbox.image()
- img.paste(text_img, (self.author_margin_left, top), text_img)
+ img.paste(text_img, (metr.author_margin_left, top), text_img)
- top += text_img.size[1] + self.title_top
+ top += text_img.size[1] + metr.title_top
tbox = TextBox(
- self.width - self.title_margin_left - self.title_margin_right,
- self.height - top,
+ metr.width - metr.title_margin_left - metr.title_margin_right,
+ metr.height - top,
)
- title_font = self.author_font or ImageFont.truetype(
- get_resource('fonts/DejaVuSerif.ttf'), 40)
- tbox.text(self.pretty_title(), self.title_color, title_font,
- self.title_lineskip, self.title_shadow)
+ title_font = ImageFont.truetype(
+ self.title_font_ttf, metr.title_font_size)
+ tbox.text(self.pretty_title(), self.title_color, title_font, metr.title_lineskip, self.title_shadow)
text_img = tbox.image()
- img.paste(text_img, (self.title_margin_left, top), text_img)
+ img.paste(text_img, (metr.title_margin_left, top), text_img)
+
+ return img
+ def final_image(self):
+ img = self.image()
+ if self.scale_after != 1:
+ img = img.resize((
+ int(round(img.size[0] * self.scale_after)),
+ int(round(img.size[1] * self.scale_after))),
+ Image.ANTIALIAS)
return img
def mime_type(self):
return self.exts[self.format]
def save(self, *args, **kwargs):
- return self.image().save(format=self.format, *args, **kwargs)
+ default_kwargs = {
+ 'format': self.format,
+ 'quality': 95,
+ }
+ default_kwargs.update(kwargs)
+ return self.final_image().save(*args, **default_kwargs)
def output_file(self, *args, **kwargs):
- imgstr = StringIO()
+ imgstr = BytesIO()
self.save(imgstr, *args, **kwargs)
- return OutputFile.from_string(imgstr.getvalue())
+ return OutputFile.from_bytes(imgstr.getvalue())
class WLCover(Cover):
- """Default Wolne Lektury cover generator."""
+ """Wolne Lektury cover without logos."""
width = 600
height = 833
uses_dc_cover = True
- author_font = ImageFont.truetype(
- get_resource('fonts/JunicodeWL-Regular.ttf'), 20)
+ author_font_ttf = get_resource('fonts/JunicodeWL-Regular.ttf')
+ author_font_size = 20
author_lineskip = 30
- title_font = ImageFont.truetype(
- get_resource('fonts/DejaVuSerif-Bold.ttf'), 30)
+ title_font_ttf = get_resource('fonts/DejaVuSerif-Bold.ttf')
+ title_font_size = 30
title_lineskip = 40
title_box_width = 350
+
+ box_top_margin = 100
+ box_bottom_margin = 100
+ box_padding_y = 20
+ box_above_line = 10
+ box_below_line = 15
+ box_line_left = 75
+ box_line_right = 275
+ box_line_width = 2
+
+ logo_top = 15
+ logo_width = 140
+
bar_width = 35
+ bar_color = '#000'
+ box_position = 'middle'
background_color = '#444'
author_color = '#444'
- default_background = get_resource('res/cover.png')
+ background_img = get_resource('res/cover.png')
format = 'JPEG'
epoch_colors = {
u'Współczesność': '#06393d',
}
- def __init__(self, book_info, format=None, image_cache=None):
- super(WLCover, self).__init__(book_info, format=format)
- self.kind = book_info.kind
- self.epoch = book_info.epoch
+ kind_box_position = {
+ u'Liryka': 'top',
+ u'Epika': 'bottom',
+ }
+
+ def __init__(self, book_info, format=None, width=None, height=None, bleed=0):
+ super(WLCover, self).__init__(book_info, format=format, width=width, height=height)
+ # Set box position.
+ self.box_position = book_info.cover_box_position or \
+ self.kind_box_position.get(book_info.kind, self.box_position)
+ # Set bar color.
+ if book_info.cover_bar_color == 'none':
+ self.bar_width = 0
+ else:
+ self.bar_color = book_info.cover_bar_color or \
+ self.epoch_colors.get(book_info.epoch, self.bar_color)
+ # Set title color.
+ self.title_color = self.epoch_colors.get(book_info.epoch, self.title_color)
+
+ self.bleed = bleed
+ self.box_top_margin += bleed
+ self.box_bottom_margin += bleed
+ self.bar_width += bleed
+
if book_info.cover_url:
url = book_info.cover_url
bg_src = None
- if image_cache:
- from urllib import quote
- try:
- bg_src = URLOpener().open(image_cache + quote(url, safe=""))
- except:
- pass
if bg_src is None:
bg_src = URLOpener().open(url)
- self.background_img = StringIO(bg_src.read())
+ self.background_img = BytesIO(bg_src.read())
bg_src.close()
- else:
- self.background_img = self.default_background
def pretty_author(self):
return self.author.upper()
+ def add_box(self, img):
+ if self.box_position == 'none':
+ return img
+
+ metr = Metric(self, self.scale)
+
+ # Write author name.
+ box = TextBox(metr.title_box_width, metr.height, padding_y=metr.box_padding_y)
+ author_font = ImageFont.truetype(
+ self.author_font_ttf, metr.author_font_size)
+ box.text(self.pretty_author(),
+ font=author_font,
+ line_height=metr.author_lineskip,
+ color=self.author_color,
+ shadow_color=self.author_shadow)
+
+ box.skip(metr.box_above_line)
+ box.draw.line((metr.box_line_left, box.height, metr.box_line_right, box.height),
+ fill=self.author_color, width=metr.box_line_width)
+ box.skip(metr.box_below_line)
+
+ # Write title.
+ title_font = ImageFont.truetype(
+ self.title_font_ttf, metr.title_font_size)
+ box.text(self.pretty_title(),
+ line_height=metr.title_lineskip,
+ font=title_font,
+ color=self.title_color,
+ shadow_color=self.title_shadow)
+
+ box_img = box.image()
+
+ # Find box position.
+ if self.box_position == 'top':
+ box_top = metr.box_top_margin
+ elif self.box_position == 'bottom':
+ box_top = metr.height - metr.box_bottom_margin - box_img.size[1]
+ else: # Middle.
+ box_top = (metr.height - box_img.size[1]) // 2
+
+ box_left = metr.bar_width + (metr.width - metr.bar_width - box_img.size[0]) // 2
+
+ # Draw the white box.
+ ImageDraw.Draw(img).rectangle(
+ (box_left, box_top, box_left + box_img.size[0], box_top + box_img.size[1]), fill='#fff')
+ # Paste the contents into the white box.
+ img.paste(box_img, (box_left, box_top), box_img)
+ return img
+
+ def add_cut_lines(self, img):
+ line_ratio = 0.5
+ if self.bleed == 0:
+ return img
+ metr = Metric(self, self.scale)
+ draw = ImageDraw.Draw(img)
+ for corner_x, corner_y in ((0, 0), (metr.width, 0), (0, metr.height), (metr.width, metr.height)):
+ dir_x = 1 if corner_x == 0 else -1
+ dir_y = 1 if corner_y == 0 else -1
+ for offset in (-1, 0, 1):
+ draw.line((corner_x, corner_y + dir_y * metr.bleed + offset,
+ corner_x + dir_x * metr.bleed * line_ratio, corner_y + dir_y * metr.bleed + offset),
+ fill='black' if offset == 0 else 'white', width=1)
+ draw.line((corner_x + dir_x * metr.bleed + offset, corner_y,
+ corner_x + dir_x * metr.bleed + offset, corner_y + dir_y * metr.bleed * line_ratio),
+ fill='black' if offset == 0 else 'white', width=1)
+ return img
+
def image(self):
- img = Image.new('RGB', (self.width, self.height), self.background_color)
+ metr = Metric(self, self.scale)
+ img = Image.new('RGB', (metr.width, metr.height), self.background_color)
draw = ImageDraw.Draw(img)
- if self.epoch in self.epoch_colors:
- epoch_color = self.epoch_colors[self.epoch]
- else:
- epoch_color = '#000'
- draw.rectangle((0, 0, self.bar_width, self.height), fill=epoch_color)
+ draw.rectangle((0, 0, metr.bar_width, metr.height), fill=self.bar_color)
if self.background_img:
src = Image.open(self.background_img)
- trg_size = (self.width - self.bar_width, self.height)
+ trg_size = (metr.width - metr.bar_width, metr.height)
if src.size[0] * trg_size[1] < src.size[1] * trg_size[0]:
resized = (
trg_size[0],
- src.size[1] * trg_size[0] / src.size[0]
+ int(round(src.size[1] * trg_size[0] / src.size[0]))
)
- cut = (resized[1] - trg_size[1]) / 2
- src = src.resize(resized)
+ cut = (resized[1] - trg_size[1]) // 2
+ src = src.resize(resized, Image.ANTIALIAS)
src = src.crop((0, cut, src.size[0], src.size[1] - cut))
else:
resized = (
- src.size[0] * trg_size[1] / src.size[1],
+ int(round(src.size[0] * trg_size[1] / src.size[1])),
trg_size[1],
)
- cut = (resized[0] - trg_size[0]) / 2
- src = src.resize(resized)
+ cut = (resized[0] - trg_size[0]) // 2
+ src = src.resize(resized, Image.ANTIALIAS)
src = src.crop((cut, 0, src.size[0] - cut, src.size[1]))
- img.paste(src, (self.bar_width, 0))
+ img.paste(src, (metr.bar_width, 0))
del src
- box = TextBox(self.title_box_width, self.height, padding_y=20)
- box.text(self.pretty_author(),
- font=self.author_font,
- line_height=self.author_lineskip,
- color=self.author_color,
- shadow_color=self.author_shadow,
- )
+ img = self.add_box(img)
- box.skip(10)
- box.draw.line((75, box.height, 275, box.height),
- fill=self.author_color, width=2)
- box.skip(15)
+ # img = self.add_cut_lines(img)
- box.text(self.pretty_title(),
- line_height=self.title_lineskip,
- font=self.title_font,
- color=epoch_color,
- shadow_color=self.title_shadow,
- )
- box_img = box.image()
+ return img
- if self.kind == 'Liryka':
- # top
- box_top = 100
- elif self.kind == 'Epika':
- # bottom
- box_top = self.height - 100 - box_img.size[1]
- else:
- # center
- box_top = (self.height - box_img.size[1]) / 2
-
- box_left = self.bar_width + (self.width - self.bar_width -
- box_img.size[0]) / 2
- draw.rectangle((box_left, box_top,
- box_left + box_img.size[0], box_top + box_img.size[1]),
- fill='#fff')
- img.paste(box_img, (box_left, box_top), box_img)
+class WLNoBoxCover(WLCover):
+ def add_box(self, img):
return img
+class LogoWLCover(WLCover):
+ gradient_height = 90
+ gradient_logo_height = 60
+ gradient_logo_margin_right = 30
+ gradient_logo_spacing = 40
+ gradient_color = '#000'
+ gradient_opacity = .6
+ gradient_logos = [
+ 'res/wl-logo-white.png',
+ 'res/fnp-logo-white.png',
+ ]
+
+ def __init__(self, book_info, *args, **kwargs):
+ super(LogoWLCover, self).__init__(book_info, *args, **kwargs)
+ self.gradient_height += self.bleed
+ self.gradient_logo_margin_right += self.bleed
+
+ self.additional_cover_logos = [
+ BytesIO(URLOpener().open(cover_logo_url).read())
+ for cover_logo_url in book_info.cover_logo_urls
+ ]
+
+ def image(self):
+ img = super(LogoWLCover, self).image()
+ metr = Metric(self, self.scale)
+ gradient = Image.new('RGBA', (metr.width - metr.bar_width, metr.gradient_height), self.gradient_color)
+ gradient_mask = Image.new('L', (metr.width - metr.bar_width, metr.gradient_height))
+ draw = ImageDraw.Draw(gradient_mask)
+ for line in range(0, metr.gradient_height):
+ draw.line(
+ (0, line, metr.width - metr.bar_width, line),
+ fill=int(255 * self.gradient_opacity * line / metr.gradient_height))
+ img.paste(gradient, (metr.bar_width, metr.height - metr.gradient_height), mask=gradient_mask)
+
+ cursor = metr.width - metr.gradient_logo_margin_right
+ logo_top = int(metr.height - metr.gradient_height / 2 - metr.gradient_logo_height / 2 - metr.bleed / 2)
+
+ logos = [get_resource(logo_path) for logo_path in self.gradient_logos[::-1]]
+ logos = logos + self.additional_cover_logos
+ logos = [Image.open(logo_bytes).convert('RGBA') for logo_bytes in logos]
+
+ # See if logos fit into the gradient. If not, scale down accordingly.
+ space_for_logos = metr.width - metr.bar_width - 2 * metr.gradient_logo_margin_right
+ widths = [logo.size[0] * metr.gradient_logo_height / logo.size[1] for logo in logos]
+ taken_space = sum(widths) + (len(logos) - 1) * (metr.gradient_logo_spacing)
+ logo_scale = space_for_logos / taken_space if taken_space > space_for_logos else 1
+ logo_top += int(metr.gradient_logo_height * (1 - logo_scale) / 2)
+
+ for i, logo in enumerate(logos):
+ logo = logo.resize(
+ (
+ int(round(widths[i] * logo_scale)),
+ int(round(metr.gradient_logo_height * logo_scale))
+ ),
+ Image.ANTIALIAS)
+ cursor -= logo.size[0]
+ img.paste(logo, (cursor, logo_top), mask=logo)
+ cursor -= int(round(metr.gradient_logo_spacing * logo_scale))
+
+ return img
+
+
+class EbookpointCover(LogoWLCover):
+ gradient_logo_height = 58
+ gradient_logo_spacing = 25
+ gradient_logos = [
+ 'res/ebookpoint-logo-white.png',
+ 'res/wl-logo-white.png',
+ 'res/fnp-logo-white.png',
+ ]
+
class VirtualoCover(Cover):
width = 600
author_lineskip = 60
author_color = '#fff'
author_shadow = '#000'
- author_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Italic.ttf'), 50)
+ author_font_ttf = get_resource('fonts/JunicodeWL-Italic.ttf')
+ author_font_size = 50
title_top = 0
title_margin_left = 118
title_lineskip = 60
title_color = '#fff'
title_shadow = '#000'
- title_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Italic.ttf'), 50)
+ title_font_ttf = get_resource('fonts/JunicodeWL-Italic.ttf')
+ title_font_size = 50
def pretty_title(self):
return u"„%s”" % self.title
author_margin_right = 233
author_lineskip = 156
author_color = '#d9d919'
- author_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Regular.ttf'), 130)
+ author_font_ttf = get_resource('fonts/JunicodeWL-Regular.ttf')
+ author_font_size = 130
title_top = 400
title_margin_left = 307
title_margin_right = 233
title_lineskip = 168
title_color = '#d9d919'
- title_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Regular.ttf'), 140)
+ title_font_ttf = get_resource('fonts/JunicodeWL-Regular.ttf')
+ title_font_size = 140
format = 'PNG'
width = 600
height = 730
background_img = get_resource('res/cover-gandalf.png')
- author_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Regular.ttf'), 30)
- title_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Regular.ttf'), 40)
+ author_font_ttf = get_resource('fonts/JunicodeWL-Regular.ttf')
+ author_font_size = 30
+ title_font_ttf = get_resource('fonts/JunicodeWL-Regular.ttf')
+ title_font_size = 40
logo_bottom = 25
logo_width = 250
format = 'PNG'
+
+
+class KMLUCover(LogoWLCover):
+ gradient_logo_height = 58
+ gradient_logo_spacing = 25
+ gradient_logos = [
+ 'res/kmlu-logo-white.png',
+ 'res/wl-logo-white.png',
+ 'res/fnp-logo-white.png',
+ ]
+
+
+class MPWCover(LogoWLCover):
+ gradient_logo_height = 58
+ gradient_logo_spacing = 25
+ gradient_logos = [
+ 'res/mpw-logo-white.png',
+ 'res/wl-logo-white.png',
+ 'res/fnp-logo-white.png',
+ ]
+
+
+class AtriumCover(LogoWLCover):
+ gradient_logo_height = 58
+ gradient_logo_spacing = 25
+ gradient_logos = [
+ 'res/atrium-logo.png',
+ 'res/wl-logo-white.png',
+ 'res/fnp-logo-white.png',
+ ]
+
+
+COVER_CLASSES = {
+ 'default': LogoWLCover,
+ 'kmlu': KMLUCover,
+ 'mpw': MPWCover,
+ 'atrium': AtriumCover,
+}
+
+
+def make_cover(book_info, *args, **kwargs):
+ if 'cover_class' in kwargs:
+ cover_class_name = kwargs.pop('cover_class')
+ else:
+ cover_class_name = book_info.cover_class
+ cover_class = COVER_CLASSES[cover_class_name]
+ return cover_class(book_info, *args, **kwargs)
fnp / librarian.git / blobdiff