Coverage of src/colors/color.cr

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require "json"

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require "colorize"

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require "./any_number"

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module Colors

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  class Color

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    property red

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    property green

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    property blue

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    def initialize(

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      red : AnyNumber | ColorValue = ColorValue.off,

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      green : AnyNumber | ColorValue = ColorValue.off,

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      blue : AnyNumber | ColorValue = ColorValue.off

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      @red = ColorValue.new red

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      @green = ColorValue.new green

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      @blue = ColorValue.new blue

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end

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    # Accepts a string like "#RRGGBB", returns a new Color. Raises an exception

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    # if the string is not in that format.

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    def self.from_s(string : String) : Color

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      unless string[0] == '#'

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        raise ArgumentError.new(

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          "invalid character in color string at position 0: #{string[0]}"

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end

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      self.new(

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        red: ColorValue.new(string[1..2]),

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        green: ColorValue.new(string[3..4]),

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        blue: ColorValue.new(string[5..6])

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end

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    def self.random

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      rand self

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end

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    # A `Color` with `@red` set to the given value and the other colors off.

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    def self.red(intensity : AnyNumber | ColorValue = ColorValue.full)

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      self.new red: ColorValue.new intensity

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end

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    # A `Color` with `@blue` set to the given value and the other colors off.

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    def self.blue(intensity : AnyNumber | ColorValue = ColorValue.full)

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      self.new blue: ColorValue.new intensity

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end

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    # A `Color` with `@green` set to the given value and the other colors off.

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    def self.green(intensity : AnyNumber | ColorValue = ColorValue.full)

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      self.new green: ColorValue.new intensity

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end

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    # A zero `Color`.

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    def self.black

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      self.new

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end

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    # :ditto:

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    def self.zero

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      black

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end

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    # A `Color` with all values set to the maximum.

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    def self.white

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      self.grey ColorValue.max

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end

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    # A `Color` where each primary color's value is equal.

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    def self.grey(intensity : AnyNumber | ColorValue = ColorValue.new(0x88))

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      intensity = ColorValue.new intensity

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      self.new(red: intensity, blue: intensity, green: intensity)

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end

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    # :ditto:

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    def self.gray(intensity : AnyNumber | ColorValue = ColorValue.new(0x88))

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      self.grey intensity

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end

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    # Return the given text as a colorized value for display in terminals.

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    def colorize(text : String)

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      text.colorize(

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        Colorize::ColorRGB.new(

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          red: @red.to_u8,

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          green: @green.to_u8,

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          blue: @blue.to_u8

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      ).to_s

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end

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    # Return the standard `#XXXXXX` hexadecimal representation of this `Color`

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    def to_s

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      "#" + @red.to_s + @green.to_s + @blue.to_s

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end

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    def to_json

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      %<"#{to_s}">

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end

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    def to_json(builder)

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      builder.string to_s

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end

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    def self.new(pull parser : JSON::PullParser)

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      self.from_s parser.read_string

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end

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end

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end

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Cover for src/colors/color.cr