-# -*- coding: utf-8 -*-
-#
-# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
-#
-import Image, ImageFont, ImageDraw, ImageFilter
-from librarian import get_resource
-
-
-class TextBox(object):
- """Creates an Image with a series of centered strings."""
-
- SHADOW_X = 3
- SHADOW_Y = 3
- SHADOW_BLUR = 3
-
- def __init__(self, max_width, max_height, padding_x=None, padding_y=None):
- if padding_x is None:
- padding_x = self.SHADOW_X + self.SHADOW_BLUR
- if padding_y is None:
- padding_y = self.SHADOW_Y + self.SHADOW_BLUR
-
- self.max_width = max_width
- self.max_text_width = max_width - 2 * padding_x
- self.padding_y = padding_y
- self.height = padding_y
- self.img = Image.new('RGBA', (max_width, max_height))
- self.draw = ImageDraw.Draw(self.img)
- self.shadow_img = None
- self.shadow_draw = None
-
- def skip(self, height):
- """Skips some vertical space."""
- self.height += height
-
- def text(self, text, color='#000', font=None, line_height=20,
- shadow_color=None):
- """Writes some centered text."""
- if shadow_color:
- if not self.shadow_img:
- self.shadow_img = Image.new('RGBA', self.img.size)
- self.shadow_draw = ImageDraw.Draw(self.shadow_img)
- while text:
- line = text
- line_width = self.draw.textsize(line, font=font)[0]
- while line_width > self.max_text_width:
- parts = line.rsplit(' ', 1)
- if len(parts) == 1:
- line_width = self.max_text_width
- break
- line = parts[0]
- line_width = self.draw.textsize(line, font=font)[0]
- line = line.strip() + ' '
-
- pos_x = (self.max_width - line_width) / 2
-
- if shadow_color:
- self.shadow_draw.text(
- (pos_x + self.SHADOW_X, self.height + self.SHADOW_Y),
- line, font=font, fill=shadow_color
- )
-
- self.draw.text((pos_x, self.height), line, font=font, fill=color)
- self.height += line_height
- # go to next line
- text = text[len(line):]
-
- def image(self):
- """Creates the actual Image object."""
- image = Image.new('RGBA', (self.max_width,
- self.height + self.padding_y))
- if self.shadow_img:
- shadow = self.shadow_img.filter(ImageFilter.BLUR)
- image.paste(shadow, (0, 0), shadow)
- image.paste(self.img, (0, 0), self.img)
- else:
- image.paste(self.img, (0, 0))
- return image
-
-
-class Cover(object):
- """Abstract base class for cover images generator."""
- width = 600
- height = 800
- background_color = '#fff'
- background_img = None
-
- author_top = 100
- author_margin_left = 20
- author_margin_right = 20
- author_lineskip = 40
- author_color = '#000'
- author_shadow = None
- author_font = None
-
- title_top = 100
- title_margin_left = 20
- title_margin_right = 20
- title_lineskip = 54
- title_color = '#000'
- title_shadow = None
- title_font = None
-
- logo_bottom = None
- logo_width = None
- uses_dc_cover = False
-
- format = 'JPEG'
-
- exts = {
- 'JPEG': 'jpg',
- 'PNG': 'png',
- }
-
- mime_types = {
- 'JPEG': 'image/jpeg',
- 'PNG': 'image/png',
- }
-
- def __init__(self, book_info):
- self.author = ", ".join(auth.readable() for auth in book_info.authors)
- self.title = book_info.title
-
- def pretty_author(self):
- """Allows for decorating author's name."""
- return self.author
-
- def pretty_title(self):
- """Allows for decorating title."""
- return self.title
-
- def image(self):
- img = Image.new('RGB', (self.width, self.height), self.background_color)
-
- if self.background_img:
- background = Image.open(self.background_img)
- img.paste(background, None, background)
- del background
-
- # WL logo
- if self.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))
-
- top = self.author_top
- tbox = TextBox(
- self.width - self.author_margin_left - self.author_margin_right,
- self.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)
- text_img = tbox.image()
- img.paste(text_img, (self.author_margin_left, top), text_img)
-
- top += text_img.size[1] + self.title_top
- tbox = TextBox(
- self.width - self.title_margin_left - self.title_margin_right,
- self.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)
- text_img = tbox.image()
- img.paste(text_img, (self.title_margin_left, top), text_img)
-
- return img
-
- def mime_type(self):
- return self.mime_types[self.format]
-
- def ext(self):
- return self.exts[self.format]
-
- def save(self, *args, **kwargs):
- return self.image().save(format=self.format, *args, **kwargs)
-
-
-class WLCover(Cover):
- """Default Wolne Lektury cover generator."""
- uses_dc_cover = True
- author_font = ImageFont.truetype(
- get_resource('fonts/JunicodeWL-Regular.ttf'), 20)
- author_lineskip = 30
- title_font = ImageFont.truetype(
- get_resource('fonts/DejaVuSerif-Bold.ttf'), 30)
- title_lineskip = 40
- title_box_width = 350
- bar_width = 35
- background_color = '#444'
- author_color = '#444'
- default_background = get_resource('res/cover.png')
- format = 'JPEG'
-
- epoch_colors = {
- u'Starożytność': '#9e3610',
- u'Średniowiecze': '#564c09',
- u'Renesans': '#8ca629',
- u'Barok': '#a6820a',
- u'Oświecenie': '#f2802e',
- u'Romantyzm': '#db4b16',
- u'Pozytywizm': '#961060',
- u'Modernizm': '#7784e0',
- u'Dwudziestolecie międzywojenne': '#3044cf',
- u'Współczesność': '#06393d',
- }
-
- def __init__(self, book_info):
- super(WLCover, self).__init__(book_info)
- self.kind = book_info.kind
- self.epoch = book_info.epoch
- if book_info.cover_url:
- from urllib2 import urlopen
- from StringIO import StringIO
-
- bg_src = urlopen(book_info.cover_url)
- self.background_img = StringIO(bg_src.read())
- bg_src.close()
- else:
- self.background_img = self.default_background
-
- def pretty_author(self):
- return self.author.upper()
-
- def image(self):
- img = Image.new('RGB', (self.width, self.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)
-
- if self.background_img:
- src = Image.open(self.background_img)
- trg_size = (self.width - self.bar_width, self.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]
- )
- cut = (resized[1] - trg_size[1]) / 2
- src = src.resize(resized)
- src = src.crop((0, cut, src.size[0], src.size[1] - cut))
- else:
- resized = (
- src.size[0] * trg_size[1] / src.size[1],
- trg_size[1],
- )
- cut = (resized[0] - trg_size[0]) / 2
- src = src.resize(resized)
- src = src.crop((cut, 0, src.size[0] - cut, src.size[1]))
-
- img.paste(src, (self.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,
- )
-
- box.skip(10)
- box.draw.line((75, box.height, 275, box.height),
- fill=self.author_color, width=2)
- box.skip(15)
-
- 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()
-
- 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)
-
- return img
-
-
-
-class VirtualoCover(Cover):
- width = 600
- height = 730
- author_top = 73
- title_top = 73
- logo_bottom = 25
- logo_width = 250
-
-
-class PrestigioCover(Cover):
- width = 580
- height = 783
- background_img = get_resource('res/cover-prestigio.png')
-
- author_top = 446
- author_margin_left = 118
- author_margin_right = 62
- author_lineskip = 60
- author_color = '#fff'
- author_shadow = '#000'
- author_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Italic.ttf'), 50)
-
- title_top = 0
- title_margin_left = 118
- title_margin_right = 62
- title_lineskip = 60
- title_color = '#fff'
- title_shadow = '#000'
- title_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Italic.ttf'), 50)
-
- def pretty_title(self):
- return u"„%s”" % self.title
-
-
-class BookotekaCover(Cover):
- width = 2140
- height = 2733
- background_img = get_resource('res/cover-bookoteka.png')
-
- author_top = 480
- author_margin_left = 307
- author_margin_right = 233
- author_lineskip = 156
- author_color = '#d9d919'
- author_font = ImageFont.truetype(get_resource('fonts/JunicodeWL-Regular.ttf'), 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)
-
- format = 'PNG'
-
-
-class GandalfCover(Cover):
- 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)
- logo_bottom = 25
- logo_width = 250
- format = 'PNG'
fnp / librarian.git / blobdiff