Module: ColorHelper

Included in:
OoxmlParser::Color
Defined in:
lib/ooxml_parser/common_parser/common_data/color/color_helper.rb

Overview

Helper methods for color

Instance Method Summary collapse

Instance Method Details

#parse_hex_string(hex_string) ⇒ Object

Parse string in hex

Parameters:

  • hex_string (String) —

    with or without alpha-channel



5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# File 'lib/ooxml_parser/common_parser/common_data/color/color_helper.rb', line 5

def parse_hex_string(hex_string)
  return self if %w[auto null].include?(hex_string)

  char_array = hex_string.split(//)
  if char_array.length == 3
    @red = char_array[0].hex
    @green = char_array[1].hex
    @blue = char_array[2].hex
  elsif char_array.length == 6
    @red = (char_array[0] + char_array[1]).hex
    @green = (char_array[2] + char_array[3]).hex
    @blue = (char_array[4] + char_array[5]).hex
  elsif char_array.length == 8
    @alpha_channel = (char_array[0] + char_array[1]).hex
    @red = (char_array[2] + char_array[3]).hex
    @green = (char_array[4] + char_array[5]).hex
    @blue = (char_array[6] + char_array[7]).hex
  end
  self
end