Class: Pdfrb::Color::CalGray

Inherits:
CIEBasedColorSpace show all
Defined in:
lib/pdfrb/color/color_space.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from CIEBasedColorSpace

#to_pdf

Methods inherited from ColorSpace

[], names, register, register_as, registry

Constructor Details

#initialize(white_point:, black_point: nil, gamma: nil) ⇒ CalGray

Returns a new instance of CalGray.



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# File 'lib/pdfrb/color/color_space.rb', line 90

def initialize(white_point:, black_point: nil, gamma: nil)
  @white_point = white_point
  @black_point = black_point
  @gamma = gamma
end

Instance Attribute Details

#black_point ⇒ Object (readonly)

Returns the value of attribute black_point.



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# File 'lib/pdfrb/color/color_space.rb', line 88

def black_point
  @black_point
end

#gamma ⇒ Object (readonly)

Returns the value of attribute gamma.



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# File 'lib/pdfrb/color/color_space.rb', line 88

def gamma
  @gamma
end

#white_point ⇒ Object (readonly)

Returns the value of attribute white_point.



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# File 'lib/pdfrb/color/color_space.rb', line 88

def white_point
  @white_point
end

Class Method Details

.pdf_name ⇒ Object 



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# File 'lib/pdfrb/color/color_space.rb', line 97

def pdf_name; :CalGray; end

Instance Method Details

#parameters_array ⇒ Object 



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# File 'lib/pdfrb/color/color_space.rb', line 100

def parameters_array
  dict = { WhitePoint: Pdfrb::Model::PdfArray.new(@white_point) }
  dict[:BlackPoint] = Pdfrb::Model::PdfArray.new(@black_point) if @black_point
  dict[:Gamma] = @gamma if @gamma
  dict
end