From 9f80a33d9c6f7fffaf4de04212d2b35a4170ebc3 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@gmail.com>
Date: Sun, 4 Aug 2013 14:41:39 +0200
Subject: [PATCH] Add adjust_options

This gives the user the ability to process the images after resizing them. In
particular, the color, contrast, brightness and sharpness can be adjusted.
---
 sigal/image.py                | 3 +++
 sigal/settings.py             | 2 ++
 sigal/templates/sigal.conf.py | 7 +++++++
 3 files changed, 12 insertions(+)

diff --git a/sigal/image.py b/sigal/image.py
index 8af08ee..f1e893e 100644
--- a/sigal/image.py
+++ b/sigal/image.py
@@ -72,6 +72,9 @@ def generate_image(source, outname, settings, options=None):
     processor = processor_cls(*settings['img_size'], upscale=False)
     img = processor.process(img)
 
+    # Adjust the image after resizing
+    img = Adjust(**settings['adjust_options']).process(img)
+
     if settings['copyright']:
         add_copyright(img, settings['copyright'])
 
diff --git a/sigal/settings.py b/sigal/settings.py
index 1a19999..913f177 100644
--- a/sigal/settings.py
+++ b/sigal/settings.py
@@ -29,6 +29,8 @@ _DEFAULT_CONFIG = {
     'destination': '_build',
     'img_size': (640, 480),
     'img_processor': 'ResizeToFit',
+    'adjust_options': {'color': 1.0, 'brightness': 1.0,
+                       'contrast': 1.0, 'sharpness': 1.0},
     'make_thumbs': True,
     'thumb_prefix': '',
     'thumb_suffix': '',
diff --git a/sigal/templates/sigal.conf.py b/sigal/templates/sigal.conf.py
index ce2976c..d214535 100644
--- a/sigal/templates/sigal.conf.py
+++ b/sigal/templates/sigal.conf.py
@@ -26,6 +26,13 @@ img_size = (800, 600)
 # - SmartResize: identical to ResizeToFill, but uses entropy to crop the image
 # img_processor = 'ResizeToFit'
 
+# Adjust the image after resizing it. A default value of 1.0 leaves the images
+# untouched.
+# adjust_options = {'color': 1.0,
+#                   'brightness': 1.0,
+#                   'contrast': 1.0,
+#                   'sharpness': 1.0}
+
 # Generate thumbnails
 # make_thumbs = True