added WLDocument.as_cover: treat covers more like ebooks

[librarian.git] / librarian / cover.py

diff --git a/librarian/cover.py b/librarian/cover.py
index 23603d6..a2de837 100644 (file)
--- a/librarian/cover.py
+++ b/librarian/cover.py
@@ -3,8 +3,10 @@
 # This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
+import re
 import Image, ImageFont, ImageDraw, ImageFilter
-from librarian import get_resource
+from StringIO import StringIO
+from librarian import get_resource, OutputFile
 
 
 class TextBox(object):
@@ -36,6 +38,7 @@ 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)
@@ -117,9 +120,11 @@ class Cover(object):
         'PNG': 'image/png',
         }
 
-    def __init__(self, book_info):
+    def __init__(self, book_info, format=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
 
     def pretty_author(self):
         """Allows for decorating author's name."""
@@ -178,9 +183,16 @@ class Cover(object):
     def save(self, *args, **kwargs):
         return self.image().save(format=self.format, *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)
@@ -208,15 +220,24 @@ class WLCover(Cover):
         u'Współczesność': '#06393d',
     }
 
-    def __init__(self, book_info):
-        super(WLCover, self).__init__(book_info)
+    def __init__(self, book_info, format=None, image_cache=None):
+        super(WLCover, self).__init__(book_info, format=format)
         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)
+            url = book_info.cover_url
+            bg_src = None
+            if image_cache:
+                from urllib import quote
+                try:
+                    bg_src = urlopen(image_cache + quote(url, safe=""))
+                except:
+                    pass
+            if bg_src is None:
+                bg_src = urlopen(url)
             self.background_img = StringIO(bg_src.read())
             bg_src.close()
         else: