X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/c461850146a3c49dd5bec6c845c1b0ce52a34896..f6e2bb1feb744c79fad320190251f9c6829ad0ab:/librarian/cover.py?ds=sidebyside diff --git a/librarian/cover.py b/librarian/cover.py index 27f7a70..6390f8a 100644 --- a/librarian/cover.py +++ b/librarian/cover.py @@ -3,11 +3,100 @@ # 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 +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: + return type(src)(self._scale * src) + else: + return src + + +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.""" + text = re.sub(r'\s+', ' ', 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' @@ -19,7 +108,8 @@ 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 @@ -27,13 +117,16 @@ 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 + scale_after = 1 exts = { 'JPEG': 'jpg', @@ -45,46 +138,30 @@ class Cover(object): 'PNG': 'image/png', } - - @staticmethod - def draw_centered_text(text, img, font, 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 text_draw.textsize(line, font=font)[0] > width: - try: - line, ext = line.rsplit(' ', 1) - except: - break - pos_x = margin_left + (width - text_draw.textsize(line, font=font)[0]) / 2 - 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 - - - def __init__(self, author='', title=''): - self.author = author - self.title = title + 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 = 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.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) + 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) @@ -92,20 +169,43 @@ 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)) - - author_font = self.author_font or ImageFont.truetype(get_resource('fonts/DejaVuSerif.ttf'), 30) - title_y = self.draw_centered_text(self.pretty_author(), img, author_font, - 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_font = self.title_font or ImageFont.truetype(get_resource('fonts/DejaVuSerif.ttf'), 40) - self.draw_centered_text(self.pretty_title(), img, title_font, - 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) + 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 = metr.author_top + tbox = TextBox( + metr.width - metr.author_margin_left - metr.author_margin_right, + metr.height - top, + ) + + 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, (metr.author_margin_left, top), text_img) + + top += text_img.size[1] + metr.title_top + tbox = TextBox( + metr.width - metr.title_margin_left - metr.title_margin_right, + metr.height - top, + ) + 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, (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): @@ -115,8 +215,260 @@ class Cover(object): 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() + self.save(imgstr, *args, **kwargs) + return OutputFile.from_string(imgstr.getvalue()) + +class WLCover(Cover): + """Wolne Lektury cover without logos.""" + width = 600 + height = 833 + uses_dc_cover = True + author_font_ttf = get_resource('fonts/JunicodeWL-Regular.ttf') + author_font_size = 20 + author_lineskip = 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' + background_img = 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', + } + + 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 bg_src is None: + bg_src = URLOpener().open(url) + self.background_img = StringIO(bg_src.read()) + bg_src.close() + + 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): + metr = Metric(self, self.scale) + img = Image.new('RGB', (metr.width, metr.height), self.background_color) + draw = ImageDraw.Draw(img) + + 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 = (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, 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], + trg_size[1], + ) + 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, (metr.bar_width, 0)) + del src + + img = self.add_box(img) + + # img = self.add_cut_lines(img) + + return 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, *args, **kwargs): + super(LogoWLCover, self).__init__(*args, **kwargs) + self.gradient_height += self.bleed + self.gradient_logo_margin_right += self.bleed + + 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 = metr.height - metr.gradient_height / 2 - metr.gradient_logo_height / 2 - metr.bleed / 2 + for logo_path in self.gradient_logos[::-1]: + logo = Image.open(get_resource(logo_path)) + logo = logo.resize( + (logo.size[0] * metr.gradient_logo_height / logo.size[1], metr.gradient_logo_height), + Image.ANTIALIAS) + cursor -= logo.size[0] + img.paste(logo, (cursor, logo_top), mask=logo) + cursor -= metr.gradient_logo_spacing + + 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): @@ -124,8 +476,8 @@ class VirtualoCover(Cover): height = 730 author_top = 73 title_top = 73 - logo_bottom = 0 - logo_width = 300 + logo_bottom = 25 + logo_width = 250 class PrestigioCover(Cover): @@ -139,7 +491,8 @@ 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 @@ -147,7 +500,8 @@ 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 @@ -163,13 +517,60 @@ 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' + +class GandalfCover(Cover): + width = 600 + height = 730 + background_img = get_resource('res/cover-gandalf.png') + 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', + ] + + +COVER_CLASSES = { + 'default': LogoWLCover, + 'kmlu': KMLUCover, + 'mpw': MPWCover, +} + + +def make_cover(book_info, *args, **kwargs): + cover_class = COVER_CLASSES[book_info.cover_class] + return cover_class(book_info, *args, **kwargs)