Class: Gradient::SVG

Inherits:
Object
  • Object
show all
Defined in:
lib/gradient/svg.rb

Constant Summary collapse

SVGNS = 
'http://www.w3.org/2000/svg'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SVG

Returns a new instance of SVG.



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# File 'lib/gradient/svg.rb', line 34

def initialize
  @maps = {}
end

Instance Attribute Details

#maps ⇒ Object (readonly)

Returns the value of attribute maps.



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# File 'lib/gradient/svg.rb', line 10

def maps
  @maps
end

Class Method Details

.open(file) ⇒ Object 



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# File 'lib/gradient/svg.rb', line 28

def open(file)
  read(file)
end

.parse(string_buffer) ⇒ Object 



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# File 'lib/gradient/svg.rb', line 14

def parse(string_buffer)
  new.tap do |parser|
    parser.parse(string_buffer)
  end.maps
end

.read(file) ⇒ Object 



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# File 'lib/gradient/svg.rb', line 20

def read(file)
  new.tap do |parser|
    File.open(file, 'r') do |file|
      parser.parse(file.read)
    end
  end.maps
end

Instance Method Details

#parse(buffer) ⇒ Object 



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# File 'lib/gradient/svg.rb', line 40

def parse(buffer)
  xml = Nokogiri::XML(buffer)
  (
    xml.xpath('//linearGradient') +
    xml.xpath('//xmlns:linearGradient', 'xmlns' => SVGNS)
  ).each do |linear_gradient|
    unless (id = linear_gradient['id']) then
      raise SVGError, 'linearGradient has no id'
    end
    unless (map = parse_linear_gradient(linear_gradient)).points.empty?
      @maps[id] = map
    end
  end
end