module Shutterbug
class PhantomJob
attr_accessor :image_file
attr_accessor :html_file
def program
@config.phantom_bin_path
end
def rasterize_js
File.join(File.dirname(__FILE__),'rasterize.js')
end
def convert_quality(val, format)
# Client sends quality between 0 and 1 (similar to .toDataURL() second argument).
# This conversion tries to ensure that the size of the final image is similar to
# .toDataURL() output with given quality settings.
val = val.to_f
case format
when "png"
val *= 10
when "jpeg"
val *= 100
else
val *= 100
end
# PhantomJS expects integer.
val.to_i
end
def initialize(base_url, options)
@base_url = base_url
@html = options[:html] || ""
@css = options[:css] || ""
@width = options[:width] || 1000
@height = options[:height] || 700
@format = options[:format] || "png"
@quality = options[:quality] || 1
@quality = convert_quality(@quality, @format)
@config = Configuration.instance
end
def cache_key
@cache_key ||= Digest::SHA1.hexdigest("#{@html}#{@css}#{@base_url}#{@format}#{@quality}")[0..10]
end
def document
date = Time.now.strftime("%Y-%m-%d (%I:%M%p)")
"""
content from #{@base_url} #{date}
#{@css}
#{@html}
"""
end
def html_file_name
"#{cache_key}.html"
end
def image_file_name
"#{cache_key}.#{@format}"
end
def input_path
@config.fs_path_for(html_file_name)
end
def output_path
@config.fs_path_for(image_file_name)
end
def rasterize_cl
%x[#{self.program} --ignore-ssl-errors=true --ssl-protocol=any #{self.rasterize_js} #{self.input_path} #{self.output_path} #{@width}*#{@height} #{@quality}]
end
def rasterize
File.open(input_path, 'w') do |f|
f.write(document)
end
rasterize_cl()
self.image_file = @config.storage.new(image_file_name)
self.html_file = @config.storage.new(html_file_name)
end
end
end