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Contents
module Octicons
class Octicon
attr_reader :path, :options, :width, :height, :symbol, :keywords
def initialize(symbol, options = {})
@symbol = symbol.to_s
if octicon = Octicons::OCTICON_SYMBOLS[@symbol]
@path = octicon["path"]
@width = octicon["width"].to_i
@height = octicon["height"].to_i
@keywords = octicon["keywords"]
@options = options
@options.merge!({
class: classes,
viewBox: viewbox,
version: "1.1"
})
@options.merge!(size)
@options.merge!(a11y)
else
raise "Couldn't find octicon symbol for #{@symbol.inspect}"
end
end
# Returns an string representing a <svg> tag
def to_svg
"<svg #{html_attributes}>#{@path}</svg>"
end
private
def html_attributes
attrs = ""
@options.each { |attr, value| attrs += "#{attr}=\"#{value}\" " }
attrs.strip
end
# add some accessibility features to svg
def a11y
accessible = {}
if @options[:'aria-label'].nil?
accessible[:'aria-hidden'] = "true"
else
accessible[:role] = "img"
end
accessible
end
# prepare the octicon class
def classes
"octicon octicon-#{@symbol} #{@options[:class]} ".strip
end
def viewbox
"0 0 #{@width} #{@height}"
end
# determine the height and width of the octicon based on :size option
def size
size = {
width: @width,
height: @height
}
# Specific size
unless @options[:width].nil? && @options[:height].nil?
size[:width] = @options[:width].nil? ? calculate_width(@options[:height]) : @options[:width]
size[:height] = @options[:height].nil? ? calculate_height(@options[:width]) : @options[:height]
end
size
end
def calculate_width(height)
(height.to_i * @width) / @height
end
def calculate_height(width)
(width.to_i * @height) / @width
end
end
end
Version data entries
171 entries across 171 versions & 1 rubygems