Class: PSD::GradientMap

Inherits:
LayerInfo show all
Defined in:
lib/psd/layer/info/gradient_map.rb

Instance Attribute Summary collapse

Attributes inherited from LayerInfo

#data

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from LayerInfo

#initialize, #skip

Constructor Details

This class inherits a constructor from PSD::LayerInfo

Instance Attribute Details

#color_model ⇒ Object (readonly)

Returns the value of attribute color_model.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def color_model
  @color_model
end

#color_stops ⇒ Object (readonly)

Returns the value of attribute color_stops.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def color_stops
  @color_stops
end

#dither ⇒ Object (readonly)

Returns the value of attribute dither.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def dither
  @dither
end

#interpolation ⇒ Object (readonly)

Returns the value of attribute interpolation.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def interpolation
  @interpolation
end

#maximum_color ⇒ Object (readonly)

Returns the value of attribute maximum_color.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def maximum_color
  @maximum_color
end

#minimum_color ⇒ Object (readonly)

Returns the value of attribute minimum_color.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def minimum_color
  @minimum_color
end

#mode ⇒ Object (readonly)

Returns the value of attribute mode.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def mode
  @mode
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def name
  @name
end

#random_seed ⇒ Object (readonly)

Returns the value of attribute random_seed.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def random_seed
  @random_seed
end

#reverse ⇒ Object (readonly)

Returns the value of attribute reverse.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def reverse
  @reverse
end

#roughness_factor ⇒ Object (readonly)

Returns the value of attribute roughness_factor.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def roughness_factor
  @roughness_factor
end

#showing_transparency ⇒ Object (readonly)

Returns the value of attribute showing_transparency.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def showing_transparency
  @showing_transparency
end

#transparency_stops ⇒ Object (readonly)

Returns the value of attribute transparency_stops.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def transparency_stops
  @transparency_stops
end

#using_vector_color ⇒ Object (readonly)

Returns the value of attribute using_vector_color.



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# File 'lib/psd/layer/info/gradient_map.rb', line 9

def using_vector_color
  @using_vector_color
end

Class Method Details

.should_parse?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/psd/layer/info/gradient_map.rb', line 5

def self.should_parse?(key)
  key == 'grdm'
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/psd/layer/info/gradient_map.rb', line 13

def parse
  # Version
  @file.seek 2, IO::SEEK_CUR

  @reverse = @file.read_boolean
  @dither = @file.read_boolean

  @name = @file.read_unicode_string

  color_stops = @file.read_short
  @color_stops = color_stops.times.map do
    color = {
      location: @file.read_int,
      midpoint: @file.read_int,
      color: @file.read_space_color
    }

    # Mystery padding
    @file.seek 2, IO::SEEK_CUR
    color
  end

  transparency_stops = @file.read_short
  @transparency_stops = transparency_stops.times.map do
    {
      location: @file.read_int,
      midpoint: @file.read_int,
      opacity: @file.read_short
    }
  end

  expansion_count = @file.read_short
  if expansion_count > 0
    @interpolation = @file.read_short
    length = @file.read_short
    if length >= 32
      @mode = @file.read_short
      @random_seed = @file.read_int
      @showing_transparency = @file.read_short > 0
      @using_vector_color = @file.read_short > 0
      @roughness_factor = @file.read_int
      
      @color_model = @file.read_short
      @minimum_color = 4.times.map do
        @file.read_short >> 8
      end

      @maximum_color = 4.times.map do
        @file.read_short >> 8
      end
    end
  end

  @file.seek 2, IO::SEEK_CUR
end