Class: TaskJuggler::Painter::Color

Inherits:
Object
  • Object
show all
Defined in:
lib/taskjuggler/Painter/Color.rb

Overview

A description of the color. The color is stored internally as an RGB value. Common names are provided for many popular colors.

Constant Summary collapse

NamedColors = 
{
  :aliceblue => [ 240, 248, 255 ],
  :antiquewhite  => [ 250, 235, 215 ],
  :aqua => [ 0, 255, 255 ],
  :aquamarine  => [ 127, 255, 212 ],
  :azure => [ 240, 255, 255 ],
  :beige => [ 245, 245, 220 ],
  :bisque  => [ 255, 228, 196 ],
  :black => [ 0, 0, 0 ],
  :blanchedalmond  => [ 255, 235, 205 ],
  :blue => [ 0, 0, 255 ],
  :blueviolet  => [ 138, 43, 226 ],
  :brown => [ 165, 42, 42 ],
  :burlywood => [ 222, 184, 135 ],
  :cadetblue => [ 95, 158, 160 ],
  :chartreuse  => [ 127, 255, 0 ],
  :chocolate => [ 210, 105, 30 ],
  :coral => [ 255, 127, 80 ],
  :cornflowerblue  => [ 100, 149, 237 ],
  :cornsilk  => [ 255, 248, 220 ],
  :crimson => [ 220, 20, 60 ],
  :cyan => [ 0, 255, 255 ],
  :darkblue => [ 0, 0, 139 ],
  :darkcyan => [ 0, 139, 139 ],
  :darkgoldenrod => [ 184, 134, 11 ],
  :darkgray  => [ 169, 169, 169 ],
  :darkgreen => [ 0, 100, 0 ],
  :darkgrey  => [ 169, 169, 169 ],
  :darkkhaki => [ 189, 183, 107 ],
  :darkmagenta => [ 139, 0, 139 ],
  :darkolivegreen => [ 85, 107, 47 ],
  :darkorange  => [ 255, 140, 0 ],
  :darkorchid  => [ 153, 50, 204 ],
  :darkred => [ 139, 0, 0 ],
  :darksalmon  => [ 233, 150, 122 ],
  :darkseagreen  => [ 143, 188, 143 ],
  :darkslateblue => [ 72, 61, 139 ],
  :darkslategray => [ 47, 79, 79 ],
  :darkslategrey => [ 47, 79, 79 ],
  :darkturquoise => [ 0, 206, 209 ],
  :darkviolet  => [ 148, 0, 211 ],
  :deeppink  => [ 255, 20, 147 ],
  :deepskyblue => [ 0, 191, 255 ],
  :dimgray => [ 105, 105, 105 ],
  :dimgrey => [ 105, 105, 105 ],
  :dodgerblue => [ 30, 144, 255 ],
  :firebrick => [ 178, 34, 34 ],
  :floralwhite => [ 255, 250, 240 ],
  :forestgreen => [ 34, 139, 34 ],
  :fuchsia => [ 255, 0, 255 ],
  :gainsboro => [ 220, 220, 220 ],
  :ghostwhite  => [ 248, 248, 255 ],
  :gold  => [ 255, 215, 0 ],
  :goldenrod => [ 218, 165, 32 ],
  :gray  => [ 128, 128, 128 ],
  :grey  => [ 128, 128, 128 ],
  :green => [ 0, 128, 0 ],
  :greenyellow => [ 173, 255, 47 ],
  :honeydew  => [ 240, 255, 240 ],
  :hotpink => [ 255, 105, 180 ],
  :indianred => [ 205, 92, 92 ],
  :indigo => [ 75, 0, 130 ],
  :ivory => [ 255, 255, 240 ],
  :khaki => [ 240, 230, 140 ],
  :lavender  => [ 230, 230, 250 ],
  :lavenderblush => [ 255, 240, 245 ],
  :lawngreen => [ 124, 252, 0 ],
  :lemonchiffon  => [ 255, 250, 205 ],
  :lightblue => [ 173, 216, 230 ],
  :lightcoral  => [ 240, 128, 128 ],
  :lightcyan => [ 224, 255, 255 ],
  :lightgoldenrodyellow  => [ 250, 250, 210 ],
  :lightgray => [ 211, 211, 211 ],
  :lightgreen  => [ 144, 238, 144 ],
  :lightgrey => [ 211, 211, 211 ],
  :lightpink => [ 255, 182, 193 ],
  :lightsalmon => [ 255, 160, 122 ],
  :lightseagreen => [ 32, 178, 170 ],
  :lightskyblue  => [ 135, 206, 250 ],
  :lightslategray  => [ 119, 136, 153 ],
  :lightslategrey  => [ 119, 136, 153 ],
  :lightsteelblue  => [ 176, 196, 222 ],
  :lightyellow => [ 255, 255, 224 ],
  :lime => [ 0, 255, 0 ],
  :limegreen => [ 50, 205, 50 ],
  :linen => [ 250, 240, 230 ],
  :magenta => [ 255, 0, 255 ],
  :maroon  => [ 128, 0, 0 ],
  :mediumaquamarine  => [ 102, 205, 170 ],
  :mediumblue => [ 0, 0, 205 ],
  :mediumorchid  => [ 186, 85, 211 ],
  :mediumpurple  => [ 147, 112, 219 ],
  :mediumseagreen => [ 60, 179, 113 ],
  :mediumslateblue => [ 123, 104, 238 ],
  :mediumspringgreen => [ 0, 250, 154 ],
  :mediumturquoise => [ 72, 209, 204 ],
  :mediumvioletred => [ 199, 21, 133 ],
  :midnightblue => [ 25, 25, 112 ],
  :mintcream => [ 245, 255, 250 ],
  :mistyrose => [ 255, 228, 225 ],
  :moccasin  => [ 255, 228, 181 ],
  :navajowhite => [ 255, 222, 173 ],
  :navy => [ 0, 0, 128 ],
  :oldlace => [ 253, 245, 230 ],
  :olive => [ 128, 128, 0 ],
  :olivedrab => [ 107, 142, 35 ],
  :orange  => [ 255, 165, 0 ],
  :orangered => [ 255, 69, 0 ],
  :orchid  => [ 218, 112, 214 ],
  :palegoldenrod => [ 238, 232, 170 ],
  :palegreen => [ 152, 251, 152 ],
  :paleturquoise => [ 175, 238, 238 ],
  :palevioletred => [ 219, 112, 147 ],
  :papayawhip  => [ 255, 239, 213 ],
  :peachpuff => [ 255, 218, 185 ],
  :peru  => [ 205, 133, 63 ],
  :pink  => [ 255, 192, 203 ],
  :plum  => [ 221, 160, 221 ],
  :powderblue  => [ 176, 224, 230 ],
  :purple  => [ 128, 0, 128 ],
  :red => [ 255, 0, 0 ],
  :rosybrown => [ 188, 143, 143 ],
  :royalblue => [ 65, 105, 225 ],
  :saddlebrown => [ 139, 69, 19 ],
  :salmon  => [ 250, 128, 114 ],
  :sandybrown  => [ 244, 164, 96 ],
  :seagreen => [ 46, 139, 87 ],
  :seashell  => [ 255, 245, 238 ],
  :sienna  => [ 160, 82, 45 ],
  :silver  => [ 192, 192, 192 ],
  :skyblue => [ 135, 206, 235 ],
  :slateblue => [ 106, 90, 205 ],
  :slategray => [ 112, 128, 144 ],
  :slategrey => [ 112, 128, 144 ],
  :snow  => [ 255, 250, 250 ],
  :springgreen => [ 0, 255, 127 ],
  :steelblue => [ 70, 130, 180 ],
  :tan => [ 210, 180, 140 ],
  :teal => [ 0, 128, 128 ],
  :thistle => [ 216, 191, 216 ],
  :tomato  => [ 255, 99, 71 ],
  :turquoise => [ 64, 224, 208 ],
  :violet  => [ 238, 130, 238 ],
  :wheat => [ 245, 222, 179 ],
  :white => [ 255, 255, 255 ],
  :whitesmoke  => [ 245, 245, 245 ],
  :yellow  => [ 255, 255, 0 ],
  :yellowgreen => [ 154, 205, 50 ]
}

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Color

Create a new Color object.



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# File 'lib/taskjuggler/Painter/Color.rb', line 173

def initialize(*args)
  if args.length == 1
    unless NamedColors.include?(args[0])
      raise "Unknown color name #{args[0]}"
    end

    @r, @g, @b = NamedColors[args[0]]
  elsif args.length == 3
    args.each do |v|
      unless v >= 0 && v < 256
        raise ArgumentError, "RGB values (#{args.join(', ')}) must " +
                             "be between 0 and 255."
      end
    end

    @r, @g, @b = args
  elsif args.length == 4
    unless args[0] >= 0 && args[0] < 360
      raise ArgumentError, "Hue value must be between 0 and 360"
    end
    unless args[1] >= 0 && args[1] <= 255
      raise ArgumentError, "Saturation value (#{args[1]}) must be " +
                           "between 0 and 255"
    end
    unless args[2] >= 0 && args[2] <= 255
      raise ArgumentError, "Color value (#{args[2]}) must be " +
                           "between 0 and 255"
    end
    @r, @g, @b = hsvToRgb(*args[0..2])
  else
    raise ArgumentError
  end
end

Instance Method Details

#to_hsv ⇒ Object 



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# File 'lib/taskjuggler/Painter/Color.rb', line 211

def to_hsv
  rgbToHsv(@r, @g, @b)
end

#to_rgb ⇒ Object 



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# File 'lib/taskjuggler/Painter/Color.rb', line 207

def to_rgb
  [ @r, @g, @b ]
end

#to_s ⇒ Object

Convert the RGB value into a String format that is used in HTML.



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# File 'lib/taskjuggler/Painter/Color.rb', line 216

def to_s
  format("#%02x%02x%02x", @r, @g, @b)
end