X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/9e13b0c994e9d481008bef7006a74609adfd16f8..32177c13e6f1f07741f559601064538a65ce00fd:/librarian/cover.py diff --git a/librarian/cover.py b/librarian/cover.py index 23603d6..8b770ca 100644 --- a/librarian/cover.py +++ b/librarian/cover.py @@ -3,8 +3,23 @@ # 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 +import re +from PIL import Image, ImageFont, ImageDraw, ImageFilter, ImageEnhance +from StringIO import StringIO +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: + src = type(src)(self._scale * src) + return src class TextBox(object): @@ -36,6 +51,7 @@ class TextBox(object): def text(self, text, color='#000', font=None, line_height=20, shadow_color=None): """Writes some centered text.""" + text = re.sub(r'\s+', ' ', text) if shadow_color: if not self.shadow_img: self.shadow_img = Image.new('RGBA', self.img.size) @@ -91,7 +107,8 @@ class Cover(object): 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 @@ -99,13 +116,15 @@ class Cover(object): 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 exts = { 'JPEG': 'jpg', @@ -117,9 +136,14 @@ class Cover(object): 'PNG': 'image/png', } - def __init__(self, book_info): + 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 + scale = max(float(width or 0) / self.width, float(height or 0) / self.height) + if scale: + self.scale = scale def pretty_author(self): """Allows for decorating author's name.""" @@ -130,7 +154,8 @@ class Cover(object): 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) @@ -138,34 +163,35 @@ class Cover(object): 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, 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) + + author_font = ImageFont.truetype( + self.author_font_ttf, metr.author_font_size) tbox.text(self.pretty_author(), self.author_color, author_font, - self.author_lineskip, self.author_shadow) + 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) + title_font = ImageFont.truetype( + self.title_font_ttf, metr.title_font_size) tbox.text(self.pretty_title(), self.title_color, title_font, - self.title_lineskip, self.title_shadow) + 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 @@ -176,19 +202,39 @@ class Cover(object): return self.exts[self.format] def save(self, *args, **kwargs): - return self.image().save(format=self.format, *args, **kwargs) + return self.image().save(format=self.format, quality=95, *args, **kwargs) + + def output_file(self, *args, **kwargs): + imgstr = StringIO() + self.save(imgstr, *args, **kwargs) + return OutputFile.from_string(imgstr.getvalue()) class WLCover(Cover): """Default Wolne Lektury cover generator.""" + 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 background_color = '#444' author_color = '#444' @@ -208,15 +254,16 @@ class WLCover(Cover): u'Współczesność': '#06393d', } - def __init__(self, book_info): - super(WLCover, self).__init__(book_info) + def __init__(self, book_info, format=None, width=None, height=None, with_logo=False): + super(WLCover, self).__init__(book_info, format=format, width=width, height=height) self.kind = book_info.kind self.epoch = book_info.epoch + self.with_logo = with_logo if book_info.cover_url: - from urllib2 import urlopen - from StringIO import StringIO - - bg_src = urlopen(book_info.cover_url) + url = book_info.cover_url + bg_src = None + if bg_src is None: + bg_src = URLOpener().open(url) self.background_img = StringIO(bg_src.read()) bg_src.close() else: @@ -226,25 +273,26 @@ class WLCover(Cover): return self.author.upper() 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=epoch_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] ) cut = (resized[1] - trg_size[1]) / 2 - src = src.resize(resized) + src = src.resize(resized, Image.ANTIALIAS) src = src.crop((0, cut, src.size[0], src.size[1] - cut)) else: resized = ( @@ -252,52 +300,69 @@ class WLCover(Cover): trg_size[1], ) cut = (resized[0] - trg_size[0]) / 2 - src = src.resize(resized) + 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 = 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=self.author_font, - line_height=self.author_lineskip, + font=author_font, + line_height=metr.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.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) + title_font = ImageFont.truetype( + self.title_font_ttf, metr.title_font_size) box.text(self.pretty_title(), - line_height=self.title_lineskip, - font=self.title_font, + line_height=metr.title_lineskip, + font=title_font, color=epoch_color, shadow_color=self.title_shadow, ) + + if self.with_logo: + logo = Image.open(get_resource('res/wl-logo-mono.png')) + logo = logo.resize((metr.logo_width, logo.size[1] * metr.logo_width / logo.size[0]), Image.ANTIALIAS) + alpha = logo.split()[3] + alpha = ImageEnhance.Brightness(alpha).enhance(.75) + logo.putalpha(alpha) + box.skip(metr.logo_top + logo.size[1]) + box_img = box.image() if self.kind == 'Liryka': # top - box_top = 100 + box_top = metr.box_top_margin elif self.kind == 'Epika': # bottom - box_top = self.height - 100 - box_img.size[1] + box_top = metr.height - metr.box_bottom_margin - box_img.size[1] else: # center - box_top = (self.height - box_img.size[1]) / 2 + box_top = (metr.height - box_img.size[1]) / 2 - box_left = self.bar_width + (self.width - self.bar_width - + box_left = metr.bar_width + (metr.width - metr.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 + if self.with_logo: + img.paste(logo, + (box_left + (box_img.size[0] - logo.size[0]) / 2, + box_top + box_img.size[1] - metr.box_padding_y - logo.size[1]), mask=logo) + return img class VirtualoCover(Cover): @@ -320,7 +385,8 @@ class PrestigioCover(Cover): 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 @@ -328,7 +394,8 @@ class PrestigioCover(Cover): 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 @@ -344,14 +411,16 @@ class BookotekaCover(Cover): 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' @@ -360,8 +429,10 @@ 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) + 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'