Module: Prawn::SVG::Attributes::Stroke

Included in:
Elements::Base
Defined in:
lib/prawn/svg/attributes/stroke.rb

Constant Summary collapse

CAP_STYLE_TRANSLATIONS = 
{ 'butt' => :butt, 'round' => :round, 'square' => :projecting_square }.freeze
JOIN_STYLE_TRANSLATIONS = 
{ 'miter' => :miter, 'round' => :round, 'bevel' => :bevel }.freeze

Instance Method Summary collapse

Instance Method Details

#parse_stroke_attributes_and_call ⇒ Object 



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# File 'lib/prawn/svg/attributes/stroke.rb', line 5

def parse_stroke_attributes_and_call
  if (width_string = properties.stroke_width)
    width = pixels(width_string)
    state.stroke_width = width
    add_call('line_width', width)
  end

  if (linecap = properties.stroke_linecap) && linecap != 'inherit'
    add_call('cap_style', CAP_STYLE_TRANSLATIONS.fetch(linecap, :butt))
  end

  if (linejoin = properties.stroke_linejoin) && linejoin != 'inherit'
    add_call('join_style', JOIN_STYLE_TRANSLATIONS.fetch(linejoin, :miter))
  end

  if (dasharray = properties.stroke_dasharray)
    case dasharray
    when 'inherit'
      # don't do anything
    when 'none'
      add_call('undash')
    when Array
      dasharray *= 2 if dasharray.length.odd?
      values = dasharray.map { |value| pixels(value) }

      if values.inject(0) { |a, b| a + b }.zero?
        add_call('undash')
      else
        add_call('dash', values)
      end
    else
      raise "Unknown dasharray value: #{dasharray.inspect}"
    end
  end
end