extension for middleman; generates thumbnails
There weren't any middleman extensions for v4 that generated thumbnails so I figured I'd do something similar to https://github.com/kubenstein/middleman-simple-thumbnailer
For whatever reason it appears that extensions get unloaded between compile time and their after_build run, so I ended up having to eschew using a hash.each and instead ended up looking through the cache directory, then nuking it
##Usage:
<img src="<%= create_image_thumb '/images/test-images/1.jpg','x100' %>"/> <!-- target 100px height -->
<img src="<%= create_image_thumb '/images/test-images/2.jpg','150x' %>"/> <!-- target 150px width -->
<img src="<%= create_image_thumb '/images/test-images/3.jpg','50x50' %>"/> <!-- target both -->
You can also generate squared thumbnails:
<img src="<%= create_square_thumb '/images/test-images/2.jpg','200' %>"/>
The first parameter is the image path (the full /images/test-images/2.jpg works, or just test-images/2.jpg), and the 2nd is the number of pixels per side of the generated thumb.
##In middleman:
Place the following in your gemfile:
gem 'middleman-dexterity', :git => 'https://github.com/Arcaena/middleman-dexterity.git'
Don't forget the stuff in config.rb, both in build and development:
active :dexterity
If you want to specify a different cache directory for the thumbnails:
activate :dexterity, :cache_dir => 'thumb_cache_directory'
Note that if :cache_dir is a nested directory (i.e. cache/thumbs) then cache/ will be leftover after cleanup.
You can also disable clearing the cache with the following options:
activate :dexterity, :pre_clear_cache => false, :post_clear_cache => true
It appears that clearing the cache on initialization breaks when using livereload, so disable clearing the cache in init in :development.
So far I haven't figured out a way to clear the cache when a middleman server exits, so post_clear_cache does nothing in :development.
##Dependencies:
dunno yet, I'll get something together soon
##Todo:
- pass an array of images/sizes to generate (so that thumbs don't need to be explicitly made in a file)
- maybe just pass a minimum size and then target size and auto-thumb images over a size
- general cleanup