def create_button_view(self, dt):
import json
import time
# Make reference to app root widget
sm = self._app.root
# Check that JSON been recieved
if re.match(r'^\{.*\}$', self._app.sm.json_sensors):
try:
j = json.loads(self._app.sm.json_sensors)
except Exception as e:
self._app.sm.json_sensors = 'Error in JSON'
else:
all_devices_boxlayout = BoxLayout(orientation='vertical', spacing=10)
all_devices_boxlayout.add_widget(Label(text=''))
all_devices_boxlayout.add_widget(Label(size_hint_y=0.2, text='[color=ff3333]Devices[/color]', font_size=40, markup=True))
all_devices_boxlayout.add_widget(Label(text=''))
all_devices_screen = Screen(id='all_devices_buttons', name='all_devices_buttons')
all_devices_screen.add_widget(all_devices_boxlayout)
sm.add_widget(all_devices_screen)
# Bulding new screens for list of devices and sensors based on json
# For each device create its own Screen
for device in j.keys():
Logger.info("Creating screen for device %s" % (device,))
self._app.log_list.append(get_date("Creating screen for device %s" % (device,)))
screen_device = Screen(name=device)
# Add button for device on all_devices_boxlayout
b = Button(text=device)
# This will call the function with 'device' as argument to switch Screen
b.bind(on_press=partial(self.change_screen, device))
all_devices_boxlayout.add_widget(b)
# Create Device Screen with sensors
box_device = BoxLayout(orientation='vertical', spacing=10)
box_device.add_widget(Label(text=''))
box_device.add_widget(Label(size_hint_y=0.2, text='[color=ff3333]' + device + '[/color]', font_size=40, markup=True))
box_device.add_widget(Label(text=''))
# Create Sensor Screen and button on device screen
for sensor in j[device]:
sensor_name = sensor.keys()[0]
sensor_data = sensor[sensor_name]
sensor_values = sensor_data['last_records']
sensor_dict = updates_to_plots(sensor_values)
sensor_plots = sensor_dict['plots']
ymin = sensor_dict['min_y']
ymax = sensor_dict['max_y']
xmin = sensor_dict['min_x']
last_date, last_value = sensor_values[-1]
# Determine suffix
suffix = ' '
if re.match(r'.*temp.*', sensor_name, re.IGNORECASE):
suffix = u"\u00b0C"
if re.match(r'.*humid.*', sensor_name, re.IGNORECASE):
suffix = " %"
if re.match(r'.*smoke.*', sensor_name, re.IGNORECASE):
suffix = " %"
if re.match(r'.*stove.*', sensor_name, re.IGNORECASE):
suffix = " %"
sensor = device + '_' + sensor_name
Logger.info(str(sensor))
Logger.info("Last data %s %s" % (last_date, last_value))
# Create history view
screen_sensor_history = Screen(name=device + "_" + sensor_name + "_history")
box_sensor_history = BoxLayout(orientation='vertical', spacing=10)
box_sensor_history.add_widget(Label(size_hint_y=0.1, text='[color=B6BAB9]' + sensor_name + ' (' + device + ')[/color]', font_size=30, markup=True))
# Create history text
text_history = []
for d, v in sensor_values:
text_history.append(str("%s %s" % (d, v)))
# Create left aligned list
adapter = SimpleListAdapter(data=text_history, cls=MyLeftAlignedLabel)
list_view = ListView(adapter=adapter)
# Fix bug with ListView to refresh if required
if(hasattr(list_view, '_reset_spopulate')):
Logger.info("Refresh list_view")
list_view._reset_spopulate()
# Add ListView to Sensor History
box_sensor_history.add_widget(list_view)
back_button = Button(size_hint_y=0.1, font_size=20, text='Back')
back_button.bind(on_press=partial(self.change_screen, device + "_" + sensor_name))
box_sensor_history.add_widget(back_button)
screen_sensor_history.add_widget(box_sensor_history)
sm.add_widget(screen_sensor_history)
# Create sensor screen
screen_sensor = Screen(name=device + "_" + sensor_name)
box_sensor = BoxLayout(orientation='vertical')
box_sensor.add_widget(Label(size_hint_y=0.1, text='[color=B6BAB9]' + sensor_name + ' (' + device + ')[/color]', font_size=30, markup=True))
# Add sensor value
box_sensor.add_widget(Label(text=last_value + suffix, font_size=60))
# Add sensor date
box_sensor.add_widget(Label(size_hint_y=0.1, markup=True, text='[b]Sensor last updated ' + last_date[:-3] + '[/b]\nPolled ' + get_date(None)[:-3], font_size=15))
# Add sensor graph
Logger.info("Create plot for %s" % (sensor_name,))
Logger.info(str(sensor_plots))
plot = MeshLinePlot(mode='line_strip', color=[1, 0, 0, 1])
plot.points = sensor_plots
sensor_graph = Graph(id='plots_' + sensor_name, precision='%0.0f', x_grid_label=True, y_grid_label=True, xmin=xmin, xmax=0, ymin=ymin, ymax=ymax, xlabel='days ago', ylabel=suffix, x_grid=True, y_grid=False, x_ticks_major=1, y_ticks_major=1)
sensor_graph.add_plot(plot)
box_sensor.add_widget(sensor_graph)
# Add buttonbar for sensor
box_buttons = BoxLayout(orientation='horizontal')
# Create button for history
history_button = Button(size_hint_y=0.2, font_size=20, text='History')
history_button.bind(on_press=partial(self.change_screen, device + "_" + sensor_name + "_history"))
# Create Back button
back_button = Button(size_hint_y=0.2, font_size=20, text='Back')
back_button.bind(on_press=partial(self.change_screen, device))
# Add buttons to row
box_buttons.add_widget(back_button)
box_buttons.add_widget(history_button)
# Add row to screen
box_sensor.add_widget(box_buttons)
# Add all of it to screen
screen_sensor.add_widget(box_sensor)
sm.add_widget(screen_sensor)
# Create button on device screen
button_sensor = Button(text=sensor_name)
button_sensor.bind(on_press=partial(self.change_screen, sensor))
box_device.add_widget(button_sensor)
# Add Device Screen with all sensor buttons to ScreenManager
back_button = Button(font_size=20, text='[b]Back[/b]', markup=True)
back_button.bind(on_press=partial(self.change_screen, 'all_devices_buttons'))
box_device.add_widget(back_button)
screen_device.add_widget(box_device)
sm.add_widget(screen_device)
# Adding Back button to Devices screen
back_button = Button(font_size=20, text='[b]Back[/b]', markup=True)
back_button.bind(on_press=partial(self.change_screen, 'initial_screen'))
all_devices_buttonrow = BoxLayout(orientation='horizontal')
all_devices_buttonrow.add_widget(back_button)
slide_all_button = ToggleButton(id='slide_all_button', font_size=20, text='Slideshow All Sensors')
slide_all_button.bind(on_press=partial(self.control_slideshow_all_sensors, slide_all_button))
all_devices_buttonrow.add_widget(slide_all_button)
all_devices_boxlayout.add_widget(all_devices_buttonrow)
# Unschedule timer
Clock.unschedule(self.create_button_view)
# Return to buttons of all devices
sm.current = 'all_devices_buttons'
# Schedule updates from server
Clock.schedule_interval(sm.update_views, int(self._app.sm.settings_dict['refresh_time']))
# Check if failed pause for error before return
if re.match(r'.*fail.*', self._app.sm.connect_server_status) or re.match(r'.*error.*', self._app.sm.json_sensors):
Clock.unschedule(self.create_button_view)
time.sleep(2)
self.port = self._app.config.get('network', 'port')
self.server = self._app.config.get('network', 'ip')
self._app.sm.connect_server_status = "Connecting to %s:%s" % (self.server, self.port)
sm.current = 'initial_screen'
def update_views(self, dt):
''' Method to be scheduled for updating from server '''
# Poll new JSON data
Logger.info(str(self._app.connect_to_server()))
# Clean records in log_screen if too many lines
if len(self._app.log_list) > 100:
self._app.log_list.append(get_date("Cleaning old records in log"))
while len(self._app.log_list) > 100:
self._app.log_list.pop(0)
def return_screen_object(screen_name):
# Iterate through all screens
found = None
for current_screen in self._app.sm.screens:
if current_screen.name == screen_name:
found = current_screen
return found
# For each device update Screen
if re.match(r'^\{.*\}$', self._app.sm.json_sensors):
try:
j = json.loads(self._app.sm.json_sensors)
except Exception as e:
self._app.sm.json_sensors = 'Error in JSON'
else:
for device in j.keys():
Logger.info("Updating screen for device %s" % (device,))
self._app.log_list.append(get_date("Updating screen for device %s" % (device,)))
# Create Device Screen with sensors
box_device = BoxLayout(orientation='vertical', spacing=10)
box_device.add_widget(Label(text=''))
box_device.add_widget(Label(size_hint_y=0.2, text='[color=ff3333]' + device + '[/color]', font_size=40, markup=True))
box_device.add_widget(Label(text=''))
# Create Sensor Screen and button on device screen
for sensor in j[device]:
sensor_name = sensor.keys()[0]
sensor_data = sensor[sensor_name]
sensor_values = sensor_data['last_records']
sensor_dict = updates_to_plots(sensor_values)
sensor_plots = sensor_dict['plots']
ymin = sensor_dict['min_y']
ymax = sensor_dict['max_y']
xmin = sensor_dict['min_x']
last_date, last_value = sensor_values[-1]
# Determine suffix
suffix = ' '
if re.match(r'.*temp.*', sensor_name, re.IGNORECASE):
suffix = u"\u00b0C"
if re.match(r'.*humid.*', sensor_name, re.IGNORECASE):
suffix = " %"
if re.match(r'.*smoke.*', sensor_name, re.IGNORECASE):
suffix = " %"
if re.match(r'.*stove.*', sensor_name, re.IGNORECASE):
suffix = " %"
sensor = device + '_' + sensor_name
Logger.info(str(sensor))
Logger.info("Last data %s %s" % (last_date, last_value))
# Create new history view
box_sensor_history = BoxLayout(orientation='vertical', spacing=10)
box_sensor_history.add_widget(Label(size_hint_y=0.1, text='[color=B6BAB9]' + sensor_name + ' (' + device + ')[/color]', font_size=30, markup=True))
# Create history text
text_history = []
for d, v in sensor_values:
text_history.append(str("%s %s" % (d, v)))
# Create left aligned list
adapter = SimpleListAdapter(data=text_history, cls=MyLeftAlignedLabel)
list_view = ListView(adapter=adapter)
# Fix bug with ListView to refresh if required
if(hasattr(list_view, '_reset_spopulate')):
Logger.info("Refresh list_view")
list_view._reset_spopulate()
# Add ListView to Sensor History
box_sensor_history.add_widget(list_view)
back_button = Button(size_hint_y=0.1, font_size=20, text='Back')
back_button.bind(on_press=partial(self.change_screen, device + "_" + sensor_name))
box_sensor_history.add_widget(back_button)
screen_sensor_history = return_screen_object(device + "_" + sensor_name + '_history')
screen_sensor_history.clear_widgets()
screen_sensor_history.add_widget(box_sensor_history)
screen_sensor = return_screen_object(device + "_" + sensor_name)
box_sensor = BoxLayout(orientation='vertical')
box_sensor.add_widget(Label(size_hint_y=0.1, text='[color=B6BAB9]' + sensor_name + ' (' + device + ')[/color]', font_size=30, markup=True))
# Add sensor value
box_sensor.add_widget(Label(text=last_value + suffix, font_size=60))
# Add sensor date
box_sensor.add_widget(Label(size_hint_y=0.1, markup=True, text='[b]Sensor last updated ' + last_date[:-3] + '[/b]\nPolled ' + get_date(None)[:-3], font_size=15))
# Add sensor graph
Logger.info("Create plot for %s" % (sensor_name,))
Logger.info(str(sensor_plots))
plot = MeshLinePlot(mode='line_strip', color=[1, 0, 0, 1])
plot.points = sensor_plots
sensor_graph = Graph(id='plots_' + sensor_name, precision='%0.0f', x_grid_label=True, y_grid_label=True, xmin=xmin, xmax=0, ymin=ymin, ymax=ymax, xlabel='days ago', ylabel=suffix, x_grid=True, y_grid=False, x_ticks_major=1, y_ticks_major=1)
sensor_graph.add_plot(plot)
box_sensor.add_widget(sensor_graph)
# Add buttonbar for sensor
box_buttons = BoxLayout(orientation='horizontal')
# Create button for history
history_button = Button(size_hint_y=0.2, font_size=20, text='History')
history_button.bind(on_press=partial(self.change_screen, device + "_" + sensor_name + "_history"))
# Create Back button
back_button = Button(size_hint_y=0.2, font_size=20, text='Back')
back_button.bind(on_press=partial(self.change_screen, device))
# Add buttons to row
box_buttons.add_widget(back_button)
box_buttons.add_widget(history_button)
# Add row to screen
box_sensor.add_widget(box_buttons)
# Add all of it to screen
screen_sensor.clear_widgets()
screen_sensor.add_widget(box_sensor)