Class: Colors

Inherits:

Object

• Object
• Colors

Defined in:

lib/ncurses_ui.rb

Class Method Summary

• .add(key, fg, bg, attrs = []) ⇒ Object
• .debug ⇒ Object
• .init(colormap = {}, palette = {}) ⇒ Object
• .ncg(color) ⇒ Object

  get ncurses color constant.

• .pairMap(key) ⇒ Object

Class Method Details

.add(key, fg, bg, attrs = []) ⇒ Object

# File 'lib/ncurses_ui.rb', line 296

def self.add(key, fg, bg, attrs=[])
  Curses.init_pair $pairCounter, ncg(fg), ncg(bg)
  $pairMap[key] = Curses.color_pair $pairCounter
  $attrMap[key] = attrs.map do |a|
    case a.to_sym
    when :bold
      Curses::A_BOLD
    when :underline
      Curses::A_UNDERLINE
    when :blink
      Curses::A_BLINK
    when :dim
      Curses::A_DIM
    when :normal
      Curses::A_NORMAL
    when :standout
      Curses::A_STANDOUT
    when :reverse
      Curses::A_REVERSE
    end
  end.compact.reduce :|
  $pairCounter += 1
end

.debug ⇒ Object

# File 'lib/ncurses_ui.rb', line 320

def self.debug
  puts "colors supported: #{Curses.colors}"
  puts "pairMap: #{$pairMap}"
  puts "attributes: #{$attrMap}"
  puts "colorPalette: #{$colorMap}"
end

.init(colormap = {}, palette = {}) ⇒ Object

# File 'lib/ncurses_ui.rb', line 255

def self.init colormap = {}, palette = {}
  Curses.use_default_colors
  $pairCounter += 1

  Curses::constants.grep(/COLOR_/).each do |c|
    color = c.to_s.split("_")[1]
    $colorMap[color.downcase.to_sym] = Curses.const_get "#{c}"
    $colorCounter += 1;
  end

  if Curses.can_change_color?
    palette.each do |name, definition|
      if $colorCounter >= Curses.colors || name.length == 0 
        $colorMap[name] = $colorMap[:white]
      elsif $colorMap[name]
        if definition.is_a? Integer
          $colorMap[name] = definition
        elsif definition.is_a?(Array) and definition.length == 3
          Curses.init_color $colorMap[name], definition[0], definition[1], definition[2]
        end
      else
        if definition.is_a? Integer
          $colorMap[name] = definition
        elsif definition.is_a?(Array) and definition.length == 3
          $colorMap[name] = $colorCounter;
          Curses.init_color $colorCounter, definition[0], definition[1], definition[2]
          $colorCounter += 1;
        end
      end
    end
  end

  colormap.each do |key, colors|
    self.add(key, colors[0], colors[1], colors[2..-1])
  end
end

.ncg(color) ⇒ Object

get ncurses color constant

# File 'lib/ncurses_ui.rb', line 328

def self.ncg(color)
  if color.is_a? Integer
    color
  else
    color = -1 unless color
    color = color.to_sym
    $colorMap[color] || -1
  end
end

.pairMap(key) ⇒ Object

# File 'lib/ncurses_ui.rb', line 292

def self.pairMap(key)
  ($pairMap[key] || $pairMap[:default] ) | ($attrMap[key] || 0)
end