Fix for dc:creator and dc:date tag – make it as described in OPF 2.0.1 spec.

[librarian.git] / librarian / cover.py

diff --git a/librarian/cover.py b/librarian/cover.py
index 9fb01b7..d1b2cc0 100644 (file)
--- a/librarian/cover.py
+++ b/librarian/cover.py
@@ -4,7 +4,7 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 import re
-import Image, ImageFont, ImageDraw, ImageFilter
+from PIL import Image, ImageFont, ImageDraw, ImageFilter, ImageEnhance
 from StringIO import StringIO
 from librarian import get_resource, OutputFile, URLOpener
 
@@ -125,6 +125,7 @@ class Cover(object):
 
     format = 'JPEG'
     scale = 1
+    scale_after = 1
 
     exts = {
         'JPEG': 'jpg',
@@ -142,8 +143,10 @@ class Cover(object):
         if format is not None:
             self.format = format
         scale = max(float(width or 0) / self.width, float(height or 0) / self.height)
-        if scale:
+        if scale >= 1:
             self.scale = scale
+        elif scale:
+            self.scale_after = scale
 
     def pretty_author(self):
         """Allows for decorating author's name."""
@@ -195,6 +198,15 @@ class Cover(object):
 
         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):
         return self.mime_types[self.format]
 
@@ -202,7 +214,7 @@ class Cover(object):
         return self.exts[self.format]
 
     def save(self, *args, **kwargs):
-        return self.image().save(format=self.format, quality=95, *args, **kwargs)
+        return self.final_image().save(format=self.format, quality=95, *args, **kwargs)
 
     def output_file(self, *args, **kwargs):
         imgstr = StringIO()
@@ -211,7 +223,7 @@ class Cover(object):
 
 
 class WLCover(Cover):
-    """Default Wolne Lektury cover generator."""
+    """Wolne Lektury cover without logos."""
     width = 600
     height = 833
     uses_dc_cover = True
@@ -231,7 +243,10 @@ class WLCover(Cover):
     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'
@@ -251,10 +266,11 @@ class WLCover(Cover):
         u'Współczesność': '#06393d',
     }
 
-    def __init__(self, book_info, format=None, width=None, height=None):
+    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:
             url = book_info.cover_url
             bg_src = None
@@ -288,7 +304,7 @@ class WLCover(Cover):
                     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 = (
@@ -296,7 +312,7 @@ 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, (metr.bar_width, 0))
@@ -325,6 +341,15 @@ class WLCover(Cover):
                  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':
@@ -344,9 +369,60 @@ class WLCover(Cover):
             fill='#fff')
         img.paste(box_img, (box_left, box_top), box_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 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 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
+        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):
     width = 600
@@ -419,3 +495,7 @@ class GandalfCover(Cover):
     logo_bottom = 25
     logo_width = 250
     format = 'PNG'
+
+
+DefaultEbookCover = LogoWLCover
+