X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/1e438727014e352799b4dfb8d3dfb2f8e7a58251..6cf1239c51e07bd17a4fd45269f583d0fc3f92c8:/librarian/cover.py

diff --git a/librarian/cover.py b/librarian/cover.py
index a7fc674..ddc85ca 100644
--- a/librarian/cover.py
+++ b/librarian/cover.py
@@ -3,37 +3,265 @@
 # 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 = 'PNG'
+
+    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