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# A quick and dirty class for converting color palette values to RGB values.
# The values below have the form 0xRRGGBB, where RR is the red level, GG the
# green level, and BB the blue level. Each level is a value from 0 to 255,
# just as one would expect in HTML markup.
# Future directions may include:
# - support for mapping RGB values to "best fit" palette values
#
# by Dan Caugherty https://github.com/dancaugherty/spreadsheet/compare/master...rgb
module Spreadsheet
module Excel
class Rgb
attr_accessor :r, :g, :b
@@RGB_MAP = {
:xls_color_0 => 0x000000,
:xls_color_1 => 0xffffff,
:xls_color_2 => 0xff0000,
:xls_color_3 => 0x00ff00,
:xls_color_4 => 0x0000ff,
:xls_color_5 => 0xffff00,
:xls_color_6 => 0xff00ff,
:xls_color_7 => 0x00ffff,
:xls_color_8 => 0x800000,
:xls_color_9 => 0x008000,
:xls_color_10 => 0x008000,
:xls_color_11 => 0x000080,
:xls_color_12 => 0x808080,
:xls_color_13 => 0x008080,
:xls_color_14 => 0xc0c0c0,
:xls_color_15 => 0x808080,
:xls_color_16 => 0x9999ff,
:xls_color_17 => 0x993366,
:xls_color_18 => 0xffffcc,
:xls_color_19 => 0xccffff,
:xls_color_20 => 0x660066,
:xls_color_21 => 0xff8080,
:xls_color_22 => 0x0066cc,
:xls_color_23 => 0xccccff,
:xls_color_24 => 0x000080,
:xls_color_25 => 0xff00ff,
:xls_color_26 => 0xffff00,
:xls_color_27 => 0x00ffff,
:xls_color_28 => 0x800080,
:xls_color_29 => 0x800000,
:xls_color_30 => 0x008080,
:xls_color_31 => 0x0000ff,
:xls_color_32 => 0x00ccff,
:xls_color_33 => 0xccffff,
:xls_color_34 => 0xccffcc,
:xls_color_35 => 0xffff99,
:xls_color_36 => 0x99ccff,
:xls_color_37 => 0xff99cc,
:xls_color_38 => 0xcc99ff,
:xls_color_39 => 0xffcc99,
:xls_color_40 => 0x3366ff,
:xls_color_41 => 0x33cccc,
:xls_color_42 => 0x99cc00,
:xls_color_43 => 0xffcc00,
:xls_color_44 => 0xff9900,
:xls_color_45 => 0xff6600,
:xls_color_46 => 0x666699,
:xls_color_47 => 0x969696,
:xls_color_48 => 0x003366,
:xls_color_49 => 0x339966,
:xls_color_50 => 0x003300,
:xls_color_51 => 0x333300,
:xls_color_52 => 0x993300,
:xls_color_53 => 0x993366,
:xls_color_54 => 0x333399,
:xls_color_55 => 0x333333,
:builtin_black => 0x000000,
:builtin_white => 0xffffff,
:builtin_red => 0xff0000,
:builtin_green => 0x00ff00,
:builtin_blue => 0x0000ff,
:builtin_yellow => 0xffff00,
:builtin_magenta => 0xff00ff,
:builtin_cyan => 0x00ffff,
:aqua => 0x00ffff,
:black => 0x000000,
:blue => 0x0000ff,
:cyan => 0x00ffff,
:brown => 0x800000,
:fuchsia => 0xff00ff,
:gray => 0x808080,
:grey => 0x808080,
:green => 0x008000,
:lime => 0x00ff00,
:magenta => 0xff00ff,
:navy => 0x000080,
:orange => 0xff9900,
:purple => 0x800080,
:red => 0xff0000,
:silver => 0xc0c0c0,
:white => 0xffffff,
:yellow => 0xffff00
}
def self.to_rgb color_symbol
col = @@RGB_MAP[color_symbol]
return Rgb.new(col >> 16, (col & 0xff00) >> 8, col & 0xff) if col
nil
end
def initialize(r,g,b)
@r = r & 0xff
@g = g & 0xff
@b = b & 0xff
end
def to_i
(r * (256 * 256)) + (g * 256) + b
end
def as_hex
to_i.to_s(16)
end
end
end
end
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