679 lines
26 KiB
Python
679 lines
26 KiB
Python
import io
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import kivy
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from kivy.app import App
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from kivy.clock import Clock
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import kivy.core.image
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import kivy.config
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import kivy.core.image
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from kivy.core.image import ImageData
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from kivy.core.image.img_pil import ImageLoaderPIL
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from kivy.core.image.img_pygame import ImageLoaderPygame
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import kivy.graphics.texture
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from kivy.graphics.texture import Texture
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from kivy.logger import Logger
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from kivy.properties import BooleanProperty, DictProperty, ListProperty, NumericProperty, ObjectProperty, StringProperty
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from kivy.uix.boxlayout import BoxLayout
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from kivy.uix.button import Button
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from kivy.uix.dropdown import DropDown
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from kivy.uix.floatlayout import FloatLayout
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from kivy.uix.gridlayout import GridLayout
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from kivy.uix.image import Image
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from kivy.uix.label import Label
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from kivy.uix.modalview import ModalView
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from kivy.uix.popup import Popup
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from kivy.uix.spinner import Spinner
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import kivy.lang
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import matplotlib
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matplotlib.use('Agg')
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import matplotlib.backends.backend_agg
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import matplotlib.image
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import matplotlib.lines
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import matplotlib.patches
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import matplotlib.pyplot
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import numpy
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import os
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import os.path
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import pygame.image
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import Queue
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import cStringIO
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import temp_log
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import time
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import threading
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dataThread = None
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dataThreadDataQueue = Queue.Queue()
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dataThreadCommandQueue = Queue.Queue()
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defaultSerialPort = '/dev/ttyACM0'
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kivy.config.Config.set('modules', 'monitor', '')
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class MainApp(App):
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def build(self):
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mainWindow = MainWindow()
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Clock.schedule_interval(mainWindow.update, 0.5)
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return mainWindow
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def on_stop(self):
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global dataThreadCommandQueue
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dataThreadCommandQueue.put_nowait('stop')
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def on_start(self):
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global dataThread
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dataThread.start()
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class MainWindow(FloatLayout):
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"""Main Window class"""
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dataSource = StringProperty(defaultSerialPort)
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dataSources = ListProperty(temp_log.list_serial_ports())
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lastTemperature = NumericProperty(-1000.)
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lastTime = NumericProperty(-1.)
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recordingState = StringProperty('')
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state = StringProperty('running')
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lastStatus = DictProperty({})
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image_output_file = StringProperty('')
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raw_data_output_file = StringProperty('')
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reference_profile_file = StringProperty('')
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lastData = ListProperty(list())
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def __init__(self, **kwargs):
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super(MainWindow, self).__init__(**kwargs)
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# self.ids is available here; use it's references to connect bindings
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Logger.debug('MainWindow IDs: ' + str(self.ids))
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self.modal_view = None
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#self.ids['serial_chooser_dropdown'].bind(on_serial_port_change=self.serial_port_changed)
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def update_last_temperature(self):
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start = time.time()
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global dataThreadDataQueue
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# This breaks if there are more updates in the queue than the frequency of update_last_temperature - it pulls old data out of the queue, and not the most recent.
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done = False
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data = []
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while not done:
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try:
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data.append(dataThreadDataQueue.get_nowait())
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except Queue.Empty:
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done = True
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if data:
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#if len(data) > 1:
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# Logger.debug('update_last_temperature: ' + str(len(data)) + ' items retrieved from queue')
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last_point = data[-1]
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if self.state == 'paused':
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# Try to update the last temperature, but not to the plotwidget,
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# when the data reception is halted.
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self.lastStatus = {'status' : 'paused', 'message' : 'Data receiption halted by user'}
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if 'data' in last_point and 'temperature' in last_point['data']:
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self.lastTemperature = float(last_point['data']['temperature'])
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return
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if 'data' in last_point and 'temperature' in last_point['data']:
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self.lastStatus = {'status' : 'ok', 'message' : ''}
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self.lastTemperature = float(last_point['data']['temperature'])
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if 'time' in last_point:
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self.lastTime = float(last_point['time'])
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if 'exception' in last_point:
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self.lastStatus = {'status' : 'error', 'message' : last_point['exception']}
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self.lastData = data
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#if dataThreadDataQueue.qsize():
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# Logger.debug('update_last_temperature: ' + str(dataThreadDataQueue.qsize()) + ' items left in queue after ' + str(len(data)) + ' items were taken out')
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Logger.debug('update_last_temperature: Took ' + str(time.time() - start) + ' seconds to retrieve ' + str(len(data)) + ' items. ' + str(dataThreadDataQueue.qsize()) + ' items remain in queue')
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def update(self, dt):
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self.update_data_sources()
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self.update_last_temperature()
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#Logger.debug('MainWindow: FPS ' + str(kivy.clock.Clock.get_fps()))
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#Logger.debug('MainWindow: dataThread ' + str(dataThread.name) + ' status: ' + str(dataThread.is_alive()))
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def update_data_sources(self):
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self.dataSources = temp_log.list_serial_ports()
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def on_dataSources(self, instance, value):
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Logger.debug('dataSources changed to: ' + str(self.dataSources))
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children = self.children[:]
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def serial_port_changed(self, *args):
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Logger.debug('MainWindow: Received on_serial_port_changed: ' + str(args))
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Logger.debug('MainWindow: Current dataSource: ' + str(self.dataSource))
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if args:
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new_port = args[0]
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if new_port == self.dataSource:
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Logger.debug('MainWindow: Selected port matches current port, no change')
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elif new_port in self.dataSources:
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self.dataSource = new_port
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else:
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self.dataSource = ''
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def on_dataSource(self, instance, value):
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# Stop the current data thread, if any.
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Logger.debug('MainWindow: stopping dataThread')
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global dataThread, dataThreadDataQueue, dataThreadCommandQueue
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dataThreadCommandQueue.put('stop')
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# This could cause the UI to hang until the thread is joined, if ever.
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dataThread.join()
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# Start a new data thread using the selected data source
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if value:
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Logger.debug('MainWindow: Starting new data thread on ' + str(value))
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# For some reason it seems necessary to create new Queue objects.
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dataThreadCommandQueue = Queue.Queue()
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dataThreadDataQueue = Queue.Queue()
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dataThread = threading.Thread(None, temp_log.threaded_reader, None, [value, dataThreadDataQueue, dataThreadCommandQueue])
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dataThread.start()
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def set_state(self, new_state):
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self.state = new_state
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def initiate_clear_dialog(self):
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if self.modal_view is None:
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self.modal_view = YesNoModalView(id='startstop_modal_dialog')
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self.modal_view.process_callback = self.process_clear_dialog
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self.add_widget(self.modal_view)
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def process_clear_dialog(self, *args, **kwargs):
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Logger.debug('StatusWidget: process_dialog args: ' + str(args))
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if args and args[0]:
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self.ids.mainplot.clear_data()
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self.image_output_file = ''
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self.raw_data_output_file = ''
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self.remove_widget(self.modal_view)
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self.modal_view = None
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def choose_output_file(self, *args, **kwargs):
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Logger.debug('Choose Output File pressed')
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output_file_dialog = OutputFileDialog(cancel = self.dismiss_popup,
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set_output_file = self.set_output_file)
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self.create_popup(title="Choose outputfile", content = output_file_dialog)
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def set_output_file(self, path, file_name, *args, **kwargs):
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#Logger.debug('Setouput file: ', str((path, file_name, args, kwargs)))
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# If we're oaky with writing path + file_name + (.csv|.png)
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files = {
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'image_file' : os.path.join(path, file_name + '.png'),
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'raw_data_file' : os.path.join(path, file_name + '.csv'),
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}
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errors = {}
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has_errors = False
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for k, file_name in files.iteritems():
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errors[k] = self.validate_output_file(file_name)
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if errors[k]:
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has_errors = True
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if not has_errors:
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Logger.debug('MainWindow: Set output files: ' + str(files))
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self.raw_data_output_file = files['raw_data_file']
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self.image_output_file = files['image_file']
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self.dismiss_popup()
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else:
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# @TODO UI Feedback in the popup dialog
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Logger.debug('MainWindow: Set output file errors: ' + str(errors))
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def validate_output_file(self, file_name):
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errors = []
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# File doesn't exist, parent dir is writable
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exists = os.path.exists(file_name)
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# Note, the access check isn't for security, but usability here.
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access = os.access(os.path.dirname(file_name), os.W_OK)
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Logger.debug('MainWindow: validate_ouput_file file: ' + str(file_name))
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Logger.debug('MainWindow: validate_output_file stat: ' + str(exists))
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Logger.debug('MainWindow: validate_output_file parent dir write access: ' + str(access))
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if exists:
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errors.append('File already exists')
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if not access:
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errors.append('No write access to parent directory')
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return errors
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def create_popup(self, *args, **kwargs):
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self._popup = Popup(*args, **kwargs)
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self._popup.open()
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def dismiss_popup(self, *args, **kwargs):
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self._popup.dismiss()
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def clear_output_files(self):
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self.raw_data_output_file = ''
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self.image_output_file = ''
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def on_raw_data_output_file(self, *args, **kwargs):
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if self.raw_data_output_file:
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root = self.raw_data_output_file.rsplit('.', 1)
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Logger.debug('MainWindow: ' + str(root))
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self.ids.output_file_selected.text = root[0] + '[.csv|.png]'
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else:
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self.ids.output_file_selected.text = 'No file Chosen'
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def select_reference_profile(self, *args, **kwargs):
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dialog = SelectReferenceProfileDialog(output = self.set_reference_profile,
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cancel = self.dismiss_popup)
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self.create_popup(title='Reference Profile Selection',
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content = dialog)
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def set_reference_profile(self, *args, **kwargs):
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Logger.debug('MainWindow: reference profile kwargs ' + str(kwargs))
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ref_file = ''
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if kwargs['file']:
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ref_file = kwargs['file'][0]
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if not os.path.isfile(ref_file):
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# Not a valid path/file
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return
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self.reference_profile_file = ref_file
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self.dismiss_popup()
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def on_reference_profile_file(self, *kargs, **kwargs):
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if not self.reference_profile_file:
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self.ids.reference_profile_selected.text = 'No profile selected'
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else:
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self.ids.reference_profile_selected.text = self.reference_profile_file
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class OutputFileDialog(FloatLayout):
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def __init__(self, *args, **kwargs):
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super(OutputFileDialog, self).__init__(*args, **kwargs)
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self.cancel = kwargs['cancel']
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self.set_output = kwargs['set_output_file']
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def cancel(self, *args, **kwargs):
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self.cancel(*args, **kwargs)
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def set_output(self, *args, **kwargs):
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self.set_output(*args, **kwargs)
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class SelectReferenceProfileDialog(FloatLayout):
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def __init__(self, *args, **kwargs):
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super(SelectReferenceProfileDialog, self).__init__(*args, **kwargs)
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self.cancel = kwargs['cancel']
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self.output = kwargs['output']
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def cancel(self, *args, **kwargs):
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self.cancel(*args, **kwargs)
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def set_output(self, *args, **kwargs):
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self.output(*args, **kwargs)
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class SerialPortButton(Spinner):
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__events__ = ('on_serial_port_changed',)
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noValueText = StringProperty('No serial port selected')
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def __init__(self, **kwargs):
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super(SerialPortButton, self).__init__(**kwargs)
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self.text = '/dev/ttyACM0'
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self.register_event_type('on_serial_port_changed')
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self.values = temp_log.list_serial_ports()
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def on_text(self, instance, value):
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if value == self.noValueText:
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value = ''
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Logger.debug('SerialPortDropdown: ' + 'selected with args ' + str(value))
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self.dispatch('on_serial_port_changed', value)
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def on_values(self, instance, value):
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if self.text not in self.values:
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self.text = self.noValueText
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def on_serial_port_changed(self, *args, **kwargs):
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pass
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class MyLabel(Label):
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def __init__(self, **kwargs):
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super(MyLabel, self).__init__(**kwargs)
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def on_temperature_change(self, value):
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if not value:
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value = 'n/a'
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self.text = 'Current temperature: ' + str(value)
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class StatusWidget(BoxLayout):
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def __init__(self, **kwargs):
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super(StatusWidget, self).__init__(**kwargs)
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self.states = ['running', 'paused']
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self.change_state_labels = {'running' : 'Pause', 'paused' : 'Resume'}
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self.modal_view = None
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def change_state(self):
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current_state = self.states.index(self.state)
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new_state = (current_state + 1) % len(self.states)
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self.state = self.states[new_state]
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def on_state(self, instance, value):
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Logger.debug('StatusWidget: new state ' + str(self.state))
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class PlotWidget(Image):
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image_output_file = StringProperty('')
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raw_data_output_file = StringProperty('')
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reference_profile_file = StringProperty('')
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# @TODO Include a way to change these properties.
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show_betaglucan = BooleanProperty(True)
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show_protease = BooleanProperty(True)
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show_betaamylase = BooleanProperty(True)
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show_alphaamylase = BooleanProperty(True)
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file_write_interval = NumericProperty(15)
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image_update_interval = NumericProperty(5)
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buildingImage = BooleanProperty(False)
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imageDataQueue = ObjectProperty(None, allownone = True)
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# Common data that we should only instantiate once
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# Source : http://www.howtobrew.com/section3/chapter14-1.html
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# accessed on march 21, 2015
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# x_vertices = ((x, y), width, height, color, legend_string)
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betaglucan_vertices = ((0, 35), 12000, 10, '#57ff14', 'Betaglucanase')
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protease_vertices = ((0,45), 12000, 10, '#f3ff14', 'Protease / Peptidase')
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betaamylase_vertices = ((0,55), 12000, 10.6, '#ffc014', 'Beta Amylase')
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alphaamylase_vertices = ((0, 67.7), 12000, 4.5, '#ff6614', 'Alpha Amylase')
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def __init__(self, **kwargs):
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super(PlotWidget, self).__init__(**kwargs)
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self.imageThread = None
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self.data = numpy.array([], dtype=float);
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self.lastTime = 0
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self.lastTemperature = 0
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self.lastSave = 0
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self.figure = matplotlib.pyplot.figure()
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self.plot_axes = self.figure.add_subplot(1, 1, 1)
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self.plot_axes.hold(False)
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self.plot_axes.set_ylabel('Temperature (deg C)')
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self.plot_axes.set_xlabel('Time')
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self.plot_axes.set_title('Recorded Temperature')
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self.image_data = None
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self._image_raw_data = None
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self.reference_profile = None
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Clock.schedule_interval(self.do_update, self.image_update_interval)
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Clock.schedule_once(self.do_update)
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def on_image_update_interval(self, *args):
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# Reschedule the update function.
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Clock.unschedule(self.do_update, True)
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Clock.schedule_interval(self.do_update, self.image_update_interval)
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def clear_data(self):
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self.update_output_files(True)
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self.data = numpy.array([], dtype=float);
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self.reference_profile_file = ''
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self.reference_profile = None
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self.texture = None
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self.image_output_file = ''
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self.raw_data_output_file = ''
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self.do_update()
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def do_update(self, *args):
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if self.buildingImage:
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# Check end condition, retrieve data, clean-up
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if self.imageThread.isAlive():
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return
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self.imageThread.join(0.01)
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image_data = None
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try:
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image_data = self.imageDataQueue.get_nowait()
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except Queue.Empty:
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pass
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if image_data:
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image = image_data['kivy_image']
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self.texture = image.texture
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self._image_raw_data = image_data['raw_image_data']
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self.imageThread = None
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self.imageDataQueue = None
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# @TODO self.update_output_files() should may be a scheduled task
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self.update_output_files()
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self.buildingImage = False
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return
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self.buildingImage = True
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self.imageDataQueue = Queue.Queue()
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settings = {
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'patches' : {
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'betaglucan' : { 'show' : self.show_betaglucan,
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'vertices' : self.betaglucan_vertices},
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'protease' : { 'show' : self.show_protease,
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'vertices' : self.protease_vertices},
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'betaamylase' : { 'show' : self.show_betaamylase,
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'vertices' : self.betaamylase_vertices},
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'alphaamylase' : { 'show' : self.show_alphaamylase,
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'vertices' : self.alphaamylase_vertices},
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}
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}
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self.imageThread = threading.Thread(None, threaded_image_builder, None,
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[self.data, self.reference_profile,
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self.imageDataQueue, settings])
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self.imageThread.start()
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def update_output_files(self, force = False):
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# Do this only once every 15 seconds to avoid hitting the disk frequently
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if force or time.time() - self.lastSave > self.file_write_interval:
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self.update_raw_data_output_file()
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self.update_image_output_file()
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self.lastSave = time.time()
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def update_raw_data_output_file(self):
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if self.raw_data_output_file and self.data.any():
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numpy.savetxt(self.raw_data_output_file, self.data, delimiter=',')
|
|
|
|
|
|
def update_image_output_file(self, image_data = None):
|
|
if not image_data:
|
|
image_data = self._image_raw_data
|
|
if self.image_output_file and image_data:
|
|
f = open(self.image_output_file, 'w')
|
|
if f:
|
|
Logger.debug('Updated image output file')
|
|
f.write(image_data)
|
|
f.close()
|
|
else:
|
|
Logger.debug('update_image_output_file: Unable to open file ' + self.image_output_file)
|
|
|
|
|
|
def update_data(self, data = list(), *args):
|
|
points = []
|
|
for point in data:
|
|
if 'data' in point and 'time' in point and 'temperature' in point['data']:
|
|
points.append(numpy.array([(point['time'], point['data']['temperature'])],
|
|
dtype=float, ndmin =2))
|
|
extra_data = numpy.vstack(tuple(points))
|
|
if not self.data.any():
|
|
self.data = extra_data
|
|
return
|
|
#Logger.debug('self.data: ' + str(self.data))
|
|
#Logger.debug('newpoint: ' + str(newpoint))
|
|
self.data = numpy.vstack((self.data, extra_data))
|
|
|
|
|
|
def on_reference_profile_file(self, *args, **kwargs):
|
|
Logger.debug('PlotWidget: on_reference_profile_file ' + str(self.reference_profile_file))
|
|
self.load_reference_profile()
|
|
|
|
|
|
def load_reference_profile(self):
|
|
if not self.reference_profile_file:
|
|
return
|
|
self.reference_profile = numpy.loadtxt(self.reference_profile_file,
|
|
delimiter=',')
|
|
Logger.debug('PlotWidget: reference_profile: ' + str(self.reference_profile))
|
|
|
|
|
|
class YesNoModalView(Popup):
|
|
|
|
def process(self, result, *args, **kwargs):
|
|
Logger.debug('YesNoModalView: ' + str(result) + ' ' + str(args))
|
|
Logger.debug('YesNoModalView: callback ' + str(self.process_callback))
|
|
if self.process_callback:
|
|
self.process_callback(result, *args, **kwargs)
|
|
self.dismiss()
|
|
|
|
|
|
class StatusBar(BoxLayout):
|
|
|
|
def update_status(self, status):
|
|
Logger.debug('StatusBar: received status ' + str(status))
|
|
Logger.debug('StatusBar: ids available ' + str(self.ids))
|
|
if 'message' in status:
|
|
self.ids.status_message.text = status['message']
|
|
if 'status' in status:
|
|
current_status = status['status']
|
|
if current_status == 'ok':
|
|
self.ids.status_text.text = 'Running'
|
|
self.ids.status_image.source = './images/ok.png'
|
|
if not self.ids.status_message.text:
|
|
self.ids.status_message.text = "Everything's perfectly all right now. We're fine. We're all fine here now, thank you. How are you?"
|
|
elif current_status == 'error':
|
|
self.ids.status_text.text = 'ERROR'
|
|
self.ids.status_image.source = './images/error.png'
|
|
elif current_status == 'paused':
|
|
self.ids.status_text.text = 'Paused'
|
|
self.ids.status_image.source = './images/warning.png'
|
|
else:
|
|
self.ids.status_text.text = 'Unknown Status: ' + current_status
|
|
self.ids.status_image.source = './images/warning.png'
|
|
|
|
|
|
def threaded_image_builder(data, reference_profile, dataQueue, settings = dict()):
|
|
figure, plot_axes = init_plot(settings)
|
|
start = time.time()
|
|
image_data = create_graph(figure, plot_axes, data, reference_profile, settings)
|
|
Logger.debug('threaded_image_builder: Took ' + str(time.time() - start) + ' seconds to build image data')
|
|
return_data = dict()
|
|
start = time.time()
|
|
image_data_raw = image_data.getvalue()
|
|
image_bytes = io.BytesIO(image_data_raw)
|
|
return_data['raw_image_data'] = image_data_raw
|
|
return_data['kivy_image'] = kivy.core.image.Image(image_bytes, ext = 'png')
|
|
Logger.debug('threaded_image_builder: Took ' + str(time.time() - start) + ' seconds to manipulate image data')
|
|
dataQueue.put_nowait(return_data)
|
|
|
|
|
|
def init_plot(settings = dict()):
|
|
figure = matplotlib.pyplot.figure()
|
|
plot_axes = figure.add_subplot(1, 1, 1)
|
|
plot_axes.hold(False)
|
|
plot_axes.set_ylabel('Temperature (deg C)')
|
|
plot_axes.set_xlabel('Time')
|
|
plot_axes.set_title('Recorded Temperature')
|
|
return figure, plot_axes
|
|
|
|
|
|
def create_graph(figure, plot_axes, data, reference_profile, settings = dict()):
|
|
# Add in polygons for hilightning particular temperature ranges of interest.
|
|
plot_args = []
|
|
t = None
|
|
time_max = 60
|
|
temp_max = 80
|
|
handles = []
|
|
if data.any():
|
|
#data = numpy.copy(self.data)
|
|
data = data.transpose()
|
|
t, temperature = numpy.split(data, 2, axis = 0)
|
|
if t[0][-1] > time_max:
|
|
time_max = t[0][-1]
|
|
#if numpy.nanmax(temperature[0]) > temp_max:
|
|
# temp_max = numpy.nanmax(temperature[0])
|
|
plot_args.extend((t[0], temperature[0], 'b'))
|
|
handles.append('Recorded Temperature Profile')
|
|
if reference_profile is not None and reference_profile.any():
|
|
#reference_data = numpy.copy(self.reference_profile)
|
|
reference_data = reference_profile.transpose()
|
|
t2, reference_temperature = numpy.split(reference_data, 2, axis = 0)
|
|
# Add t[0] to all reference points to make it fit on the current graph
|
|
t2 = numpy.add(t2, t[0][0])
|
|
if t2[0][-1] > time_max:
|
|
time_max = t2[0][-1]
|
|
#if numpy.nanmax(reference_temperature[0]) > temp_max:
|
|
# temp_max = numpy.nanmax(reference_temperature[0])
|
|
plot_args.extend((t2[0], reference_temperature[0], 'r'))
|
|
handles.append('Reference Temperature Profile')
|
|
lines = plot_axes.plot(*plot_args)
|
|
# Patches must be changed after the axes are plotted.
|
|
graph_update_patches(figure, plot_axes, time_max, settings)
|
|
# Disabled the legend for the moment.
|
|
# @TODO Make a small subplot next to the main plot into which legends may be placed.
|
|
#self.plot_axes.legend(lines, handles, 'lower right', title = 'Temperature Profiles')
|
|
# Set a default in case no data is plotted. This may allow patches to show,
|
|
# and it will look a little nicer before recording starts.
|
|
#self.plot_axes.set_xlim(0, time_max)
|
|
plot_axes.set_ylim(0, temp_max)
|
|
image_data = cStringIO.StringIO()
|
|
# Save a 640x480 image, see http://stackoverflow.com/questions/13714454/specifying-and-saving-a-figure-with-exact-size-in-pixels
|
|
#canvas = matplotlib.backends.backend_agg.FigureCanvasAgg(figure)
|
|
#canvas.draw()
|
|
#renderer = canvas.get_renderer()
|
|
#raw_data = renderer.tostring_argb()
|
|
#size = canvas.get_width_height()
|
|
figure.savefig(image_data, format = 'png', dpi = 96, figsize = (640/96, 480/96))
|
|
#image_data.seek(0)
|
|
return image_data
|
|
#return raw_data, size
|
|
|
|
|
|
def graph_update_patches(figure, plot_axes, time_max, settings):
|
|
if 'patches' in settings:
|
|
settings = settings['patches']
|
|
items = list()
|
|
for patch_id, patch_settings in settings.iteritems():
|
|
items.append((patch_settings['show'], patch_settings['vertices']))
|
|
legend_handles = []
|
|
legend_strings = []
|
|
for show, config in items:
|
|
color = '0.5' # default color.
|
|
if show:
|
|
origin, width, height, color, name = config
|
|
if time_max is not None:
|
|
width = time_max
|
|
p = plot_axes.add_patch(
|
|
matplotlib.patches.Rectangle(origin, width, height,
|
|
fc = color, visible = True,
|
|
fill = True)
|
|
)
|
|
legend_handles.append(p)
|
|
legend_strings.append(name)
|
|
# Disabled for the moment
|
|
figure.legend(legend_handles, legend_strings, 'lower right',
|
|
title = 'Enzyme Activity Zones')
|
|
return legend_handles
|
|
|
|
|
|
if __name__ == '__main__':
|
|
dataThread = threading.Thread(None, temp_log.threaded_reader, None, ['/dev/ttyACM0', dataThreadDataQueue, dataThreadCommandQueue])
|
|
MainApp().run()
|