class HighLine::Style

Attributes

builtin[RW]
list[R]
name[R]
rgb[RW]

Public Class Methods

ansi_rgb_to_hex(ansi_number) click to toggle source
# File lib/highline/style.rb, line 83
def self.ansi_rgb_to_hex(ansi_number)
  raise "Invalid ANSI rgb code #{ansi_number}" unless (16..231).include?(ansi_number)
  parts = (ansi_number-16).to_s(6).rjust(3,'0').scan(/./).map{|d| (d.to_i*255.0/6.0).ceil}
  rgb_hex(*parts)
end
code_index() click to toggle source
# File lib/highline/style.rb, line 93
def self.code_index
  @@code_index ||= {}
end
index(style) click to toggle source
# File lib/highline/style.rb, line 43
def self.index(style)
  if style.name
    @@styles ||= {}
    @@styles[style.name] = style
  end
  if !style.list
    @@code_index ||= {}
    @@code_index[style.code] ||= []
    @@code_index[style.code].reject!{|indexed_style| indexed_style.name == style.name}
    @@code_index[style.code] << style
  end
  style
end
list() click to toggle source
# File lib/highline/style.rb, line 89
def self.list
  @@styles ||= {}
end
new(defn = {}) click to toggle source

Single color/styles have :name, :code, :rgb (possibly), :builtin Compound styles have :name, :list, :builtin

# File lib/highline/style.rb, line 106
def initialize(defn = {})
  @definition = defn
  @name    = defn[:name]
  @code    = defn[:code]
  @rgb     = defn[:rgb]
  @list    = defn[:list]
  @builtin = defn[:builtin]
  if @rgb
    hex = self.class.rgb_hex(@rgb)
    @name ||= 'rgb_' + hex
  elsif @list
    @name ||= @list
  end
  self.class.index self unless defn[:no_index]
end
rgb(*colors) click to toggle source
# File lib/highline/style.rb, line 67
def self.rgb(*colors)
  hex = rgb_hex(*colors)
  name = ('rgb_' + hex).to_sym
  if style = list[name]
    style
  else
    parts = rgb_parts(hex)
    new(:name=>name, :code=>"\e[38;5;#{rgb_number(parts)}m", :rgb=>parts)
  end
end
rgb_hex(*colors) click to toggle source
# File lib/highline/style.rb, line 57
def self.rgb_hex(*colors)
  colors.map do |color|
    color.is_a?(Numeric) ? '%02x'%color : color.to_s
  end.join
end
rgb_number(*parts) click to toggle source
# File lib/highline/style.rb, line 78
def self.rgb_number(*parts)
  parts = parts.flatten
  16 + parts.inject(0) {|kode, part| kode*6 + (part/256.0*6.0).floor}
end
rgb_parts(hex) click to toggle source
# File lib/highline/style.rb, line 63
def self.rgb_parts(hex)
  hex.scan(/../).map{|part| part.to_i(16)}
end
uncolor(string) click to toggle source
# File lib/highline/style.rb, line 97
def self.uncolor(string)
  string.gsub(/\e\[\d+(;\d+)*m/, '')
end

Public Instance Methods

blue() click to toggle source
# File lib/highline/style.rb, line 150
def blue
  @rgb && @rgb[2]
end
bright() click to toggle source
# File lib/highline/style.rb, line 170
def bright
  create_bright_variant(:bright)
end
code() click to toggle source
# File lib/highline/style.rb, line 134
def code
  if @list
    @list.map{|element| HighLine.Style(element).code}.join
  else
    @code
  end
end
color(string) click to toggle source
# File lib/highline/style.rb, line 130
def color(string)
  code + string + HighLine::CLEAR
end
dup() click to toggle source
# File lib/highline/style.rb, line 122
def dup
  self.class.new(@definition)
end
green() click to toggle source
# File lib/highline/style.rb, line 146
def green
  @rgb && @rgb[1]
end
light() click to toggle source
# File lib/highline/style.rb, line 174
def light
  create_bright_variant(:light)
end
on() click to toggle source
# File lib/highline/style.rb, line 165
def on
  new_name = ('on_'+@name.to_s).to_sym
  self.class.list[new_name] ||= variant(new_name, :increment=>10)
end
red() click to toggle source
# File lib/highline/style.rb, line 142
def red
  @rgb && @rgb[0]
end
to_hash() click to toggle source
# File lib/highline/style.rb, line 126
def to_hash
  @definition
end
variant(new_name, options={}) click to toggle source
# File lib/highline/style.rb, line 154
def variant(new_name, options={})
  raise "Cannot create a variant of a style list (#{inspect})" if @list
  new_code = options[:code] || code
  if options[:increment]
    raise "Unexpected code in #{inspect}" unless new_code =~ /^(.*?)(\d+)(.*)/
    new_code = $1 + ($2.to_i + options[:increment]).to_s + $3
  end
  new_rgb = options[:rgb] || @rgb
  self.class.new(self.to_hash.merge(:name=>new_name, :code=>new_code, :rgb=>new_rgb))
end

Private Instance Methods

create_bright_variant(variant_name) click to toggle source
# File lib/highline/style.rb, line 180
def create_bright_variant(variant_name)
  raise "Cannot create a #{name} variant of a style list (#{inspect})" if @list
  new_name = ("#{variant_name}_"+@name.to_s).to_sym
  new_rgb = @rgb == [0,0,0] ? [128, 128, 128] : @rgb.map {|color|  color==0 ? 0 : [color+128,255].min }

  find_style(new_name) or variant(new_name, :increment=>60, :rgb=>new_rgb)
end
find_style(name) click to toggle source
# File lib/highline/style.rb, line 188
def find_style(name)
  self.class.list[name]
end