Compass config.rb

config.rb

# Note that while this file is in our config folder, it is
# symlinked to our site folders, so paths are relative from there

# Require gems and Compass plugins
# require 'rgbapng'
# require 'compass-fancybox-plugin'
require 'compass-growl'

# General
output_style = :expanded
relative_assets = true
project_path = File.dirname(__FILE__) + '/'
env_file = project_path + 'environment.rb'
add_import_path project_path + '../all/public/assets/styles/src/'
lib_dir = project_path + '../../system/lib/'

# Sass Paths
http_path = '/'
http_javascripts_path = http_path + 'assets/scripts/'
http_stylesheets_path = http_path + 'assets/styles/'
http_images_path = http_stylesheets_path + 'images/'
http_fonts_path = http_stylesheets_path + 'fonts/'

# Sass Directories
javascripts_dir = 'public/assets/scripts/'
css_dir = 'public/assets/styles/'
sass_dir = css_dir + 'src/'
images_dir = css_dir + 'images/'
fonts_dir = css_dir + 'fonts/'

# Quantize 8-bit sprites
on_sprite_saved do |file|
  unless is_32bit?(file)
    quantize(file, lib_dir + 'pngquant/pngquant-mac')
  end
  optimize(file, 'ImageOptim')
end

# Enable Debugging (Line Comments, FireSass)
# Invoke from command line: compass watch -e development --force
if environment == :development
  line_comments = true
  sass_options = { :debug_info => true }
end

# Optionally load environmental overrides
if File.exists?(env_file)
  require env_file
end

# Methods
def is_32bit?(file)
  File.basename(file).match(/^png(24|32)/)
end

def quantize(file, binary)
  png8_file = file.sub(/\.png/, '-fs8.png')
  system binary + ' ' + file
  sleep 2
  system 'mv -f ' + png8_file + ' ' + file
  growl('Sprite: ' + File.basename(file) + ' quantized')
end

def optimize(file, image_app)
  system 'open -a ' + image_app + '.app ' + file
  growl('Sprite: ' + File.basename(file) + ' optimized')
end

def growl(msg)
  GNTP.notify({
    :title    => "Compass",
    :text     => msg,
    :icon     => "file://#{CompassGrowl::ICON}"
  })
end

http://www.viget.com/inspire/stop-making-sprites-compass-sass-and-png-sprite-generation/
Disqus was broken, so I'm putting here.

I started with your config.rb and tweaked it a bit. Using your code, it wasn't excluding 24bit dirs, because filename is the whole path, not just the filename (maybe something in Compass changed?).

Anyway, I fixed that, and also updated the Growl call to work with the official compass-growl gem: https://github.com/Compass/compass-growl

Enjoy, and thanks!

Thanks, Tim! I could be missing something, but what's the point of compass-growl? Does it do something that another ruby Growl library wouldn't?

Well, compass-growl out of the box will Growl for init, stylesheet saved, error, sprite generated, just by requiring it in your config.rb.
Since I'm already using that I figured I would use the same growl lib they are (GNTP) to Growl the quantize message. That way I can steal their icon too :). Other than that, theres no reason you couldn't use another one.

Well, that sounds awesome. Will have to add this to my compass.rb, too.

i'm trying to use sass media query combiner ( https://github.com/aaronjensen/sass-media_query_combiner ) with my compass project, can anyone help me?
I use
sass 3.2
compass 0.12

and compile my scss with compass (ex: compass watch)
Thanks