Class: RubyXL::ColorConvenienceClasses::HlsColor

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#a ⇒ Object

Returns the value of attribute a.



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# File 'lib/rubyXL/convenience_methods/color.rb', line 82

def a
  @a
end

#h ⇒ Object

Returns the value of attribute h.



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# File 'lib/rubyXL/convenience_methods/color.rb', line 82

def h
  @h
end

#l ⇒ Object

Returns the value of attribute l.



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# File 'lib/rubyXL/convenience_methods/color.rb', line 82

def l
  @l
end

#s ⇒ Object

Returns the value of attribute s.



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# File 'lib/rubyXL/convenience_methods/color.rb', line 82

def s
  @s
end

Instance Method Details

#apply_tint(tint) ⇒ Object 



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# File 'lib/rubyXL/convenience_methods/color.rb', line 140

def apply_tint(tint)
  return self if tint.nil? || tint == 0

  if tint < 0 then
    self.l = l * (1.0 + tint);
  else
    self.l = l * (1.0 - tint) + tint;
  end

  self
end

#to_rgb ⇒ Object 



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# File 'lib/rubyXL/convenience_methods/color.rb', line 84

def to_rgb
  rgb_color = RgbColor.new

  r = g = b = l

  if s != 0 then
    t1 = nil

    if l < 0.5 then
      t1 = l * (1.0 + s)
    else
      t1 = l + s - (l * s)
    end

    t2 = 2.0 * l - t1;
    h = self.h / 360.0

    t_r = h + (1.0 / 3.0)
    r = set_color(t1, t2, t_r)

    t_g = h;
    g = set_color(t1, t2, t_g)

    t_b = h - (1.0 / 3.0);
    b = set_color(t1, t2, t_b)
  end

  rgb_color.r = (r * 255).round(0).to_i
  rgb_color.g = (g * 255).round(0).to_i
  rgb_color.b = (b * 255).round(0).to_i

  rgb_color.a = (a * 255).round(0).to_i

  rgb_color
end