Class: Hutils::CursesVisualizer

Inherits:
Object
  • Object
show all
Defined in:
lib/hutils/curses_visualizer.rb

Instance Method Summary collapse

Constructor Details

#initialize(colors:, compact:, highlights:, root:) ⇒ CursesVisualizer

Returns a new instance of CursesVisualizer.



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# File 'lib/hutils/curses_visualizer.rb', line 5

def initialize(colors:, compact:, highlights:, root:)
  @colors = colors
  @highlights = highlights
  @line_buffer = []
  @root = root
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/hutils/curses_visualizer.rb', line 12

def run
  Curses.cbreak      # no need for a newline to get type chars
  Curses.curs_set(0) # invisible
  Curses.noecho      # don't echo character on a getch

  Curses.start_color
  Curses.use_default_colors

  Curses.init_pair(COLOR_KEY, -1, Curses::COLOR_BLUE)
  Curses.init_pair(COLOR_HIGHLIGHT, Curses::COLOR_BLACK, Curses::COLOR_YELLOW)

  Curses.init_screen

  trap("SIGINT", "SIGTERM") do
    Curses.close_screen
    # @todo: curses shutdown?
    $stdout.puts "Caught deadly signal"
    $stdout.flush
    exit(0)
  end

  # set root node as "expanded"
  @root.tags[:expanded] = true

  @need_repaint = true
  @selected_line = 0
  build_line_buffer

  loop do
    if @need_repaint
      build_line_buffer
      paint
      @need_repaint = false
    end
    handle_key
  end
end