# 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
+import Image, ImageFont, ImageDraw, ImageFilter
from librarian import get_resource
-def cover(width, height, author, title):
- def draw_centered_text(text, draw, font, width, pos_y, lineskip):
+class Cover(object):
+ width = 600
+ height = 800
+ background_color = '#fff'
+ background_img = None
+
+ author_align = 'c'
+ author_top = 100
+ author_margin_left = 20
+ author_margin_right = 20
+ author_lineskip = 40
+ author_color = '#000'
+ author_shadow = None
+ author_font = None
+ author_wrap = True
+
+ title_align = 'c'
+ title_top = 100
+ title_margin_left = 20
+ title_margin_right = 20
+ title_lineskip = 54
+ title_color = '#000'
+ title_shadow = None
+ title_font = None
+ title_wrap = True
+
+ logo_bottom = None
+ logo_width = None
+
+ format = 'JPEG'
+
+
+ exts = {
+ 'JPEG': 'jpg',
+ 'PNG': 'png',
+ }
+
+ mime_types = {
+ 'JPEG': 'image/jpeg',
+ 'PNG': 'image/png',
+ }
+
+ @staticmethod
+ def person_shortener(text):
+ yield text
+ chunks = text.split()
+ n_chunks = len(chunks)
+ # make initials from given names, starting from last
+ for i in range(n_chunks - 2, -1, -1):
+ chunks[i] = chunks[i][0] + '.'
+ yield " ".join(chunks)
+ # remove given names initials, starting from last
+ while len(chunks) > 2:
+ del chunks[1]
+ yield " ".join(chunks)
+
+ @staticmethod
+ def title_shortener(text):
+ yield text
+ chunks = text.split()
+ n_chunks = len(chunks)
+ # remove words, starting from last one
+ while len(chunks) > 1:
+ del chunks[-1]
+ yield " ".join(chunks) + u'…'
+
+ @staticmethod
+ def draw_text(text, img, font, align, shortener, margin_left, width, pos_y, lineskip, color, shadow_color):
+ if shadow_color:
+ shadow_img = Image.new('RGBA', img.size)
+ shadow_draw = ImageDraw.Draw(shadow_img)
+ text_img = Image.new('RGBA', img.size)
+ text_draw = ImageDraw.Draw(text_img)
while text:
- line = text
- while draw.textsize(line, font=font)[0] > width:
- try:
- line, ext = line.rsplit(' ', 1)
- except:
- break
- draw.text(((img.size[0] - draw.textsize(line, font=font)[0]) / 2, pos_y), line, font=font, fill='#000')
+ if shortener:
+ for line in shortener(text):
+ if text_draw.textsize(line, font=font)[0] <= width:
+ break
+ text = ''
+ else:
+ line = text
+ while text_draw.textsize(line, font=font)[0] > width:
+ try:
+ line, ext = line.rsplit(' ', 1)
+ except:
+ break
+ text = text[len(line)+1:]
+ pos_x = margin_left
+ if align == 'c':
+ pos_x += (width - text_draw.textsize(line, font=font)[0]) / 2
+ elif align == 'r':
+ pos_x += (width - text_draw.textsize(line, font=font)[0])
+ if shadow_color:
+ shadow_draw.text((pos_x + 3, pos_y + 3), line, font=font, fill=shadow_color)
+ text_draw.text((pos_x, pos_y), line, font=font, fill=color)
pos_y += lineskip
- text = text[len(line)+1:]
+ if shadow_color:
+ shadow_img = shadow_img.filter(ImageFilter.BLUR)
+ img.paste(shadow_img, None, shadow_img)
+ img.paste(text_img, None, text_img)
return pos_y
- img = Image.new('RGB', (width, height), (255, 255, 255))
+ def __init__(self, author='', title=''):
+ self.author = author
+ self.title = title
+
+ def pretty_author(self):
+ return self.author
+
+ def pretty_title(self):
+ 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)
+ try:
+ img.paste(background, None, background)
+ except ValueError, e:
+ img.paste(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))
+
+ author_font = self.author_font or ImageFont.truetype(get_resource('fonts/DejaVuSerif.ttf'), 30)
+ author_shortener = None if self.author_wrap else self.person_shortener
+ title_y = self.draw_text(self.pretty_author(), img, author_font, self.author_align, author_shortener,
+ self.author_margin_left, self.width - self.author_margin_left - self.author_margin_right, self.author_top,
+ self.author_lineskip, self.author_color, self.author_shadow) + self.title_top
+ title_shortener = None if self.title_wrap else self.title_shortener
+ title_font = self.title_font or ImageFont.truetype(get_resource('fonts/DejaVuSerif.ttf'), 40)
+ self.draw_text(self.pretty_title(), img, title_font, self.title_align, title_shortener,
+ self.title_margin_left, self.width - self.title_margin_left - self.title_margin_right, title_y,
+ self.title_lineskip, self.title_color, self.title_shadow)
+
+ 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 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'
+
+
+class ArtaTechCover(Cover):
+ width = 600
+ height = 800
+ background_img = get_resource('res/cover-arta-tech.jpg')
+ author_top = 132
+ author_margin_left = 235
+ author_margin_right = 23
+ author_align = 'r'
+ author_font = ImageFont.truetype(get_resource('fonts/DroidSans.ttf'), 32)
+ author_color = '#555555'
+ author_wrap = False
+ title_top = 17
+ title_margin_right = 21
+ title_margin_left = 60
+ title_align = 'r'
+ title_font = ImageFont.truetype(get_resource('fonts/EBGaramond-Regular.ttf'), 42)
+ title_color = '#222222'
+ title_wrap = False
+ format = 'JPEG'
+
+ def pretty_author(self):
+ return self.author.upper()
+
- # WL logo
- logo = Image.open(get_resource('pdf/wl-logo.png'))
- logo = logo.resize((img.size[0] / 2, logo.size[1] * img.size[0] / 2 / logo.size[0]))
- img.paste(logo, (width / 4, img.size[1] - logo.size[1]))
+def ImageCover(img):
+ """ a class factory for simple image covers """
+ img = Image.open(img)
- draw = ImageDraw.Draw(img)
- author_font = ImageFont.truetype(get_resource('fonts/DejaVuSerif.ttf'), width/20)
- title_y = draw_centered_text(author, draw, author_font, width*9/10, height/10, width/15) + height/10
+ class ImgCover(Cover):
+ def image(self):
+ return img
- title_font = ImageFont.truetype(get_resource('fonts/DejaVuSerif.ttf'), width/15)
- draw_centered_text(title, draw, title_font, width*9/10, title_y, width/11)
+ @property
+ def format(self):
+ return self.image().format
- return img
+ return ImgCover
fnp / librarian.git / blobdiff