github-migration/compass
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Only require (chunky|oily)_png if it is needed.

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This commit is contained in:
Chris Eppstein 2010-12-05 16:09:15 -08:00
parent 43fa6cf93b
commit 00b41b5506
1 changed files with 9 additions and 2 deletions
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11
lib/compass/sass_extensions/functions/sprites.rb
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@ -1,5 +1,3 @@
require 'chunky_png'
module Compass::SassExtensions::Functions::Sprites module Compass::SassExtensions::Functions::Sprites
ZERO = Sass::Script::Number::new(0) ZERO = Sass::Script::Number::new(0)
@ -121,8 +119,17 @@ module Compass::SassExtensions::Functions::Sprites
!File.exists?(filename) || outdated? !File.exists?(filename) || outdated?
end end
def require_png_library!
begin
require 'oily_png'
rescue LoadError
require 'chunky_png'
end
end
# Returns a PNG object # Returns a PNG object
def construct_sprite def construct_sprite
require_png_library!
output_png = ChunkyPNG::Image.new(width, height, ChunkyPNG::Color::TRANSPARENT) output_png = ChunkyPNG::Image.new(width, height, ChunkyPNG::Color::TRANSPARENT)
images.each do |image| images.each do |image|
input_png = ChunkyPNG::Image.from_file(image[:file]) input_png = ChunkyPNG::Image.from_file(image[:file])