Class: BaseScreen

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/term_canvas/base_screen.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BaseScreen

Returns a new instance of BaseScreen.



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# File 'lib/term_canvas/base_screen.rb', line 6

def initialize
  Curses.init_screen
  Curses::noecho
  Curses.curs_set(0)
  Curses.stdscr.nodelay = 1
  Curses.start_color
  Curses.use_default_colors
  @color_struct = Struct.new(:id, :r, :g, :b)
  @color_pair_struct = Struct.new(:id, :fc_id, :bc_id)
  @color_pairs = [@color_pair_struct.new(0, 1, 0)]
  @colors = [@color_struct.new(0, 0, 0, 0)]
  @color_id_offset = 16
end

Instance Method Details

#find_or_create_color_pair(foreground_color: nil, background_color:) ⇒ Object

Parameters:

  • foreground_color (Hash) (defaults to: nil) —

    :r Red element of color of text. :g Green element of color of text. :b Blue element of color of text.

  • background_color (Hash) —

    :r Red element of color of background. :g Green element of color of background. :b Blue element of color of background.



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# File 'lib/term_canvas/base_screen.rb', line 28

def find_or_create_color_pair(foreground_color: nil, background_color:)
  response_color_pair = nil
  fc_id = find_or_create_color(
    @color_struct.new(*foreground_color&.values_at(*@color_struct.members))
  ).id
  bc_id = find_or_create_color(
    @color_struct.new(*background_color&.values_at(*@color_struct.members))
  ).id
  @color_pairs.each do |cp|
    if cp.fc_id == fc_id && cp.bc_id == bc_id
      response_color_pair = cp
      break
    end
  end
  return response_color_pair || create_color_pair(fc_id, bc_id)
end