Klipper print status

# @name    Klipper
# @desc    Shows Klipper 3D printer progress via Moonraker API
# @author  Set
# @version 1.4
# @config  host  text   "Moonraker IP / Host" default="192.168.1.50"
# @config  port  number "Port"              default=7125 min=1 max=65535
# @config  every number "Refresh (sec)"     default=5 min=1 max=60 unit=s
# @config  correction number "Percent correction"     default=2 min=1 unit=% max=20 help="Positive only, Will be added to current value from Moonraker API"
# @config  icon  text   "Print Icon ID"     default="51841"
# @config  dicon text   "Done Icon ID"      default="55186"
# @config  pcol  color  "Progress Bar"      default=#00FF00

class Klipper
  var url, period
  var state, prev_state, progress, label, correction
  var ticks, in_flight

  def init()
    var h = store.get("host")
    var p = store.get("port")
    self.url = "http://" + h + ":" + str(p) + "/printer/objects/query?print_stats&display_status"
    self.period = store.get("every")
    self.state = nil
    self.prev_state = nil
    self.progress = 0
    self.label = nil
    self.ticks = 0
    self.correction = 2
    self.in_flight = false
  end

  def on_body(body, status)
    self.in_flight = false
    if body == nil return end

    var m_state = re.search("\"state\":\\s*\"([^\"]+)\"", body)
    if m_state == nil return end
    
    self.prev_state = self.state
    self.state = m_state[1]

    if self.state == "printing"
      var m_prog = re.search("\"progress\":\\s*([0-9.]+)", body)
      if m_prog != nil
        var p_val = num(m_prog[1])
        if p_val != nil
          self.progress = int(p_val * 100 + 0.5)
          self.label = str(self.progress + self.correction) + "%"
        end
      else
        self.label = "PRT"
      end
    elif self.state == "complete"
      self.label = "Done!"
      self.progress = 100
      if self.prev_state == "printing"
        rotation.show()
        sound.rtttl("done:d=4,o=5,b=140:8c6,8e6,8g6,c7")
      end
    else
      self.label = "Idle"
      self.progress = 0
    end
  end

  def loop()
    if self.ticks <= 0
      self.ticks = self.period
      if !self.in_flight
        self.in_flight = true
        http.get(self.url, / b, st -> self.on_body(b, st),
                 {'find': "\"status\":", 'keep': 1024})
      end
    end
    self.ticks -= 1
  end

  def draw_print_fallback()
    rect_fill(1, 0, 6, 2, 0x888888)
    pixel(3, 2, 0xFF8800)
    pixel(4, 2, 0xFF8800)
    pixel(3, 3, 0xFF4400)
    rect_fill(0, 5, 8, 3, 0x555555)
    rect_fill(1, 4, 6, 1, 0x00FF00)
  end

  def draw_done_fallback()
    rect_fill(0, 0, 8, 8, 0x002200)
    line(1, 4, 3, 6, 0x00FF00)
    line(3, 6, 6, 1, 0x00FF00)
  end

  def draw()
    clear()
    var is_done = (self.state == "complete")
    var ic_key = is_done ? "dicon" : "icon"
    var ic = store.get(ic_key)
    var has_icon = icon(ic, 0, 0)
    
    if !has_icon
      if is_done
        self.draw_done_fallback()
      else
        self.draw_print_fallback()
      end
    end

    var x_offset = 9
    var avail_w = width() - x_offset

    if self.label == nil
      text(x_offset + (avail_w - text_ink_width("...")) / 2, 6, "...", 0x666666)
      return
    end

    if self.state == "printing"
      text(x_offset + (avail_w - text_ink_width(self.label)) / 2, 6, self.label, 0xFFFFFF)
      progress(self.progress, store.get("pcol"))
    elif is_done
      text(x_offset + (avail_w - text_ink_width(self.label)) / 2, 6, self.label, 0x00FF00)
    else
      text(x_offset + (avail_w - text_ink_width(self.label)) / 2, 6, self.label, 0x888888)
    end
  end

  def should_show()
    return self.state == "printing" || self.state == "complete"
  end

  def on_button(btn)
    if btn == "select"
      self.ticks = 0
    end
  end
end

return Klipper()

These icons belong on the device, in /ICONS. Each one is at most 32×8 pixels — shown here magnified, at their real proportions.