| Class | Sass::Script::Color |
| In: |
lib/sass/script/color.rb
|
| Parent: | Literal |
| HTML4_COLORS | = | map_vals({ 'black' => 0x000000, 'silver' => 0xc0c0c0, 'gray' => 0x808080, 'white' => 0xffffff, 'maroon' => 0x800000, 'red' => 0xff0000, 'purple' => 0x800080, 'fuchsia' => 0xff00ff, 'green' => 0x008000, 'lime' => 0x00ff00, 'olive' => 0x808000, 'yellow' => 0xffff00, 'navy' => 0x000080, 'blue' => 0x0000ff, 'teal' => 0x008080, 'aqua' => 0x00ffff | A hash from color names to [red, green, blue] value arrays. | |
| HTML4_COLORS_REVERSE | = | map_hash(HTML4_COLORS) {|k, v| [v, k]} | A hash from [red, green, blue] value arrays to color names. |
@param rgb [Array<Fixnum>] A three-element array of the red, green, and blue values (respectively)
of the color
@raise [Sass::SyntaxError] if any color value isn‘t between 0 and 255
# File lib/sass/script/color.rb, line 33
33: def initialize(rgb)
34: rgb = rgb.map {|c| c.to_i}
35: raise Sass::SyntaxError.new("Color values must be between 0 and 255") if rgb.any? {|c| c < 0 || c > 255}
36: super(rgb)
37: end
The SassScript `/` operation. Its functionality depends on the type of its argument:
{Number} : Divides each of the RGB color channels by the number.
{Color} : Divides each of this color‘s RGB color channels by the other color‘s.
{Literal} : See {Literal#div}.
@param other [Literal] The right-hand side of the operator @return [Color] The resulting color @raise [Sass::SyntaxError] if `other` is a number with units
# File lib/sass/script/color.rb, line 123
123: def div(other)
124: if other.is_a?(Sass::Script::Number) || other.is_a?(Sass::Script::Color)
125: piecewise(other, :/)
126: else
127: super
128: end
129: end
The SassScript `-` operation. Its functionality depends on the type of its argument:
{Number} : Subtracts the number from each of the RGB color channels.
{Color} : Subtracts each of the other color‘s RGB color channels from this color‘s.
{Literal} : See {Literal#minus}.
@param other [Literal] The right-hand side of the operator @return [Color] The resulting color @raise [Sass::SyntaxError] if `other` is a number with units
# File lib/sass/script/color.rb, line 77
77: def minus(other)
78: if other.is_a?(Sass::Script::Number) || other.is_a?(Sass::Script::Color)
79: piecewise(other, :-)
80: else
81: super
82: end
83: end
The SassScript `%` operation. Its functionality depends on the type of its argument:
{Number} : Takes each of the RGB color channels module the number.
{Color} : Takes each of this color‘s RGB color channels modulo the other color‘s.
{Literal} : See {Literal#mod}.
@param other [Literal] The right-hand side of the operator @return [Color] The resulting color @raise [Sass::SyntaxError] if `other` is a number with units
# File lib/sass/script/color.rb, line 146
146: def mod(other)
147: if other.is_a?(Sass::Script::Number) || other.is_a?(Sass::Script::Color)
148: piecewise(other, :%)
149: else
150: raise NoMethodError.new(nil, :mod)
151: end
152: end
The SassScript `+` operation. Its functionality depends on the type of its argument:
{Number} : Adds the number to each of the RGB color channels.
{Color} : Adds each of the RGB color channels together.
{Literal} : See {Literal#plus}.
@param other [Literal] The right-hand side of the operator @return [Color] The resulting color @raise [Sass::SyntaxError] if `other` is a number with units
# File lib/sass/script/color.rb, line 54
54: def plus(other)
55: if other.is_a?(Sass::Script::Number) || other.is_a?(Sass::Script::Color)
56: piecewise(other, :+)
57: else
58: super
59: end
60: end
The SassScript `*` operation. Its functionality depends on the type of its argument:
{Number} : Multiplies the number by each of the RGB color channels.
{Color} : Multiplies each of the RGB color channels together.
{Literal} : See {Literal#times}.
@param other [Literal] The right-hand side of the operator @return [Color] The resulting color @raise [Sass::SyntaxError] if `other` is a number with units
# File lib/sass/script/color.rb, line 100
100: def times(other)
101: if other.is_a?(Sass::Script::Number) || other.is_a?(Sass::Script::Color)
102: piecewise(other, :*)
103: else
104: raise NoMethodError.new(nil, :times)
105: end
106: end
Returns a string representation of the color. This is usually the color‘s hex value, but if the color has a name that‘s used instead.
@return [String] The string representation
# File lib/sass/script/color.rb, line 159
159: def to_s
160: return HTML4_COLORS_REVERSE[@value] if HTML4_COLORS_REVERSE[@value]
161: red, green, blue = @value.map { |num| num.to_s(16).rjust(2, '0') }
162: "##{red}#{green}#{blue}"
163: end