[svn] Dynamic thumbnail generation for photos and survey scans using imagekit, further improving registration system, other misc.

Copied from http://cucc@cucc.survex.com/svn/trunk/expoweb/troggle/, rev. 8336 by cucc @ 5/10/2009 11:05 PM

expo/imagekit_specs.py

@@ -0,0 +1,23 @@
+from imagekit.specs import ImageSpec
+from imagekit import processors
+
+class ResizeThumb(processors.Resize): 
+    width = 100 
+    height = 75 
+    crop = True
+
+class ResizeDisplay(processors.Resize):
+    width = 600 
+    
+class EnhanceThumb(processors.Adjustment): 
+    contrast = 1.2 
+    sharpness = 1.1 
+
+class Thumbnail(ImageSpec): 
+    access_as = 'thumbnail_image' 
+    pre_cache = True 
+    processors = [ResizeThumb, EnhanceThumb] 
+
+class Display(ImageSpec):
+    increment_count = True
+    processors = [ResizeDisplay]