layout.json

{
 "info": {"version": 1, "license": "GPL-2.0-or-later"},
 "layout": {
  "rows": 3,
  "widgets": [
   {"type": "label", "tattr": "large|bold", "text": "00:00:00.0", "uid": "timer_time"},
   {"type": "pbar", "unit": "none", "align": "hfill", "uid": "timer_pbar"},
   {"type": "frame",
    "align": "fill",
    "title": "Settings",
     "widget": {
     "rows": 3,
     "widgets": [
      {"cols": 3, "align": "hfill", "border": "none",
       "cpadf": "0, 1, 1, 0",
       "cfill": "1, 1, 1",
       "widgets": [
        {"type": "spinner", "min": 0, "max": 24, "val": 0, "uid": "hours"},
        {"type": "spinner", "min": 0, "max": 59, "val": 0, "uid": "mins"},
        {"type": "spinner", "min": 0, "max": 59, "val": 10, "uid": "secs"}
       ]
      },
      {"type": "checkbox", "label": "Wake from sleep", "uid": "wake"},
      {"cols": 3, "align": "hfill", "border": "none",
       "cfill": "1, 1, 1",
       "widgets": [
        {"type": "button", "btype": "play", "on_event": "start_timer", "align": "hfill"},
        {"type": "button", "btype": "pause", "on_event": "pause_timer", "align": "hfill"},
        {"type": "button", "btype": "stop", "on_event": "stop_timer", "align": "hfill"}
       ]
      }
     ]
    }
   }
  ]
 }
}