Class: Clutter::Color

Inherits:
Object
  • Object
show all
Defined in:
lib/clutter/color.rb

Class Method Summary collapse

Class Method Details

.hls(hue, luminance, saturation, alpha = 255) ⇒ Object 



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# File 'lib/clutter/color.rb', line 44

def hls(hue, luminance, saturation, alpha=255)
  hlsa(hue, luminance, saturation, alpha)
end

.hlsa(hue, luminance, saturation, alpha) ⇒ Object 



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# File 'lib/clutter/color.rb', line 48

def hlsa(hue, luminance, saturation, alpha)
  if respond_to?(:from_hls, true)
    color = from_hls(hue, luminance, saturation)
  else
    color = new
    color.from_hls(hue, luminance, saturation)
  end
  color.alpha = alpha
  color
end

.new(*args) ⇒ Object 



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# File 'lib/clutter/color.rb', line 24

def new(*args)
  if [Symbol] == args.collect(&:class)
    name = args[0]
    get_static(name)
  else
    if args.empty?
      args = [0, 0, 0, 1] unless private_method_defined?(:initialize_alloc)
    end
    super(*args)
  end
end

.parse(string) ⇒ Object 



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# File 'lib/clutter/color.rb', line 69

def parse(string)
  if respond_to?(:from_string, true)
    succeeded, color = from_string(string)
  else
    color = new
    succeeded = color.from_string(string)
  end
  unless succeeded
    raise ArgumentError, "invalid color string: <#{string}>"
  end
  color
end

.pixel(pixel) ⇒ Object 



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# File 'lib/clutter/color.rb', line 59

def pixel(pixel)
  if respond_to?(:from_pixel, true)
    color = from_pixel(pixel)
  else
    color = new
    color.from_pixel(pixel)
  end
  color
end

.rgb(red, green, blue, alpha = 255) ⇒ Object 



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# File 'lib/clutter/color.rb', line 36

def rgb(red, green, blue, alpha=255)
  rgba(red, green, blue, alpha)
end

.rgba(red, green, blue, alpha) ⇒ Object 



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# File 'lib/clutter/color.rb', line 40

def rgba(red, green, blue, alpha)
  new(red, green, blue, alpha)
end