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Contents
require 'base64'
module Chance
class Instance
module DataURL
def postprocess_css_dataurl(opts)
css = @css.gsub(/_sc_chance\:\s*["'](.*?)["']\s*/) {|match|
slice = @slices[$1]
url = 'data:' + type_for(slice[:path]) + ";base64,"
url += base64_for(slice).gsub("\n", "")
output = "background-image: url(\"#{url}\");"
output += "\n"
# FOR 2X SLICES
if slice[:x2]
width = slice[:target_width]
height = slice[:target_height]
output += "\n-webkit-background-size: #{width}px #{height}px;"
end
output
}
# We do not modify the offset, so we can just pass the original through.
css.gsub!(/-chance-offset:\s?"(.*?)" (-?[0-9]+) (-?[0-9]+)/) {|match|
"background-position: #{$2}px #{$3}px"
}
css
end
def type_for(path)
(path =~ /jpg$/) ? "image/jpeg" : "image/" + path.slice(/(gif|jpeg|png)$/)
end
def base64_for(slice)
if not slice[:canvas].nil?
# If the slice has a canvas, we must read from that.
contents = slice[:canvas].to_blob
else
# Otherwise, this implies the image has not been modified. So, we should
# be able to write out the original contents from the slice's file.
contents = slice[:file][:content]
end
Base64.encode64(contents)
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems