Website Spinner Verification

Verifies the inline spinner example on the RatatuiRuby website.

This example exists as a documentation regression test. It ensures the website’s inline viewport spinner demo remains functional.

Usage

class Spinner
  def main
    RatatuiRuby.run(viewport: :inline, height: 1) do |tui|
      until connected?
        status = tui.paragraph(text: "#{spin} Connecting...")
        tui.draw { |frame| frame.render_widget(status, frame.area) }
        return ending(tui, "Canceled!", :red) if tui.poll_event.ctrl_c?
      end
      ending(tui, "Connected!", :green)
    end
  end

  def ending(tui, message, color) = tui.draw do |frame|
    frame.render_widget(tui.paragraph(text: message, fg: color), frame.area)
  end

  def initialize = (@i, @end = 0, Time.now + 2)
  def connected? = Time.now >= @end
  def spin = SPINNER[(@i += 1) % SPINNER.length]
  SPINNER = %w[⠋ ⠙ ⠹ ⠸ ⠼ ⠴ ⠦ ⠧ ⠇ ⠏]
end
Spinner.new.main; puts

Features Demonstrated

• Inline viewport: 1-line viewport that preserves terminal scrollback

• Ctrl+C handling: Graceful cancellation with poll_event.ctrl_c?

• Colored output: Status messages with :red and :green colors

• Timeout pattern: Uses Time.now for connection simulation