class Chamomile::Progress

# File lib/chamomile/components/progress.rb, line 38
def initialize(width: DEFAULT_WIDTH, show_percentage: true, percentage_format: " %3.0f%%",
               full_char: FULL_CHAR, empty_char: EMPTY_CHAR,
               full_color: nil, empty_color: nil, gradient: nil,
               frequency: FREQUENCY, damping: DAMPING)
  @id = self.class.next_id
  @width = width
  @full_char = full_char
  @empty_char = empty_char
  @show_percentage = show_percentage
  @percentage_format = percentage_format
  @full_color = full_color
  @empty_color = empty_color
  @gradient = gradient
  @frequency = frequency.to_f
  @damping = damping.to_f
  @percent = 0.0
  @target = 0.0
  @velocity = 0.0
  @tag = 0
  @animating = false
end

# File lib/chamomile/components/progress.rb, line 22
def self.next_id
  @id_mutex.synchronize do
    if Process.pid != @id_pid
      @id_pid = Process.pid
      @next_id = 0
      @id_mutex = Mutex.new
    end
    @next_id += 1
    "#{@id_pid}-pg-#{@next_id}"
  end
end

# File lib/chamomile/components/progress.rb, line 78
def animating?
  @animating
end

# File lib/chamomile/components/progress.rb, line 69
def decr_percent(v)
  set_percent(@target - v)
end

# File lib/chamomile/components/progress.rb, line 82
def handle(msg)
  return unless msg.is_a?(ProgressFrameMsg)
  return unless msg.id == @id && msg.tag == @tag

  dt = 1.0 / FPS
  force = (@target - @percent) * @frequency
  @velocity = (@velocity + (force * dt)) * (1.0 / (1.0 + (@damping * dt)))
  @percent += @velocity * dt
  @percent = @percent.clamp(0.0, 1.0)

  if (@percent - @target).abs < EPSILON && @velocity.abs < EPSILON
    @percent = @target
    @velocity = 0.0
    @animating = false
    @tag += 1
    nil
  else
    @tag += 1
    frame_cmd
  end
end

# File lib/chamomile/components/progress.rb, line 65
def incr_percent(v)
  set_percent(@target + v)
end

# File lib/chamomile/components/progress.rb, line 60
def set_percent(p)
  @target = p.to_f.clamp(0.0, 1.0)
  start_animation
end

# File lib/chamomile/components/progress.rb, line 73
def set_spring_options(frequency, damping)
  @frequency = frequency.to_f
  @damping = damping.to_f
end

# File lib/chamomile/components/progress.rb, line 106
def view
  render_bar(@percent)
end

# File lib/chamomile/components/progress.rb, line 110
def view_as(percent)
  render_bar(percent.to_f.clamp(0.0, 1.0))
end