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open640.py
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open640.py
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#!/usr/bin/env python3
import sys
from PyQt5.QtWidgets import QWidget, QGridLayout, QPushButton, QMessageBox
from PyQt5.QtWidgets import QApplication, QPlainTextEdit, QFileDialog
from PyQt5.QtGui import QTextCursor
from PyQt5.QtCore import QSize
from settings_class import SettingsWindow
from serial_reader import Reader
from batch_reader import BatchWindow
class MainWindow(QWidget):
def __init__(self):
super(MainWindow, self).__init__()
self.collecting = False
self.title = 'Open640'
self.width = 800
self.height = 600
self.setMinimumSize(QSize(320, 240))
self.settings = SettingsWindow()
self.batch_reader = BatchWindow()
self.initMainWindow()
def initMainWindow(self):
self.setWindowTitle(self.title)
layout = QGridLayout()
layout.setSpacing(10)
self.setLayout(layout)
# Widgets
self.dataArea = QPlainTextEdit()
self.dataArea.setReadOnly(True)
self.dataArea.setPlaceholderText("Collected data will appear here for"
+ " review before it is written to"
+ " disk.")
self.settingsButton = QPushButton('Serial Settings', self)
self.settingsButton.setToolTip('Change serial port settings.')
self.checkSettingsButton = QPushButton('Dump Settings', self)
self.settingsButton.setToolTip(
"Print the current settings to the screen."
)
self.writeButton = QPushButton('Write to File', self)
self.writeButton.setToolTip('Write colected data to the disk.')
self.clearButton = QPushButton('Clear Output', self)
self.collectToggle = QPushButton('Start Collection', self)
self.settingsButton.clicked.connect(
lambda: self.onSettingsButtonClicked()
)
self.checkSettingsButton.clicked.connect(
lambda: self.onCheckButtonClicked()
)
self.repetitionsButton = QPushButton('Batch Collect', self)
self.repetitionsButton.setToolTip(
'Collect several samples in a row.'
)
self.settings.current_settings.connect(self.showSettings)
self.batch_reader.next_clicked.connect(
self.onBatchCollectorStartOrNextClicked()
)
self.collectToggle.clicked.connect(lambda: self.onStartButtonClicked())
self.writeButton.clicked.connect(lambda: self.onWriteButtonClicked())
self.clearButton.clicked.connect(lambda: self.onClearOutputClicked())
self.repetitionsButton.clicked.connect(
lambda: self.onBatchCollectClicked()
)
layout.addWidget(self.dataArea, 0, 0, 1, 0)
layout.addWidget(self.settingsButton, 1, 0)
layout.addWidget(self.checkSettingsButton, 1, 1)
layout.addWidget(self.clearButton, 1, 2)
layout.addWidget(self.repetitionsButton, 1, 3)
layout.addWidget(self.collectToggle, 1, 4)
layout.addWidget(self.writeButton, 1, 5)
self.show()
def onBatchCollectClicked(self):
self.batch_reader.show()
def onBatchCollectorStartOrNextClicked(self):
# self.onStartButtonClicked()
pass
def onStartButtonClicked(self):
if not self.collecting:
self.collectToggle.setText('Stop Collection')
self.collecting = True
self.dataArea.setPlainText(
"Waiting for data from the DU-640...\n"
+ "If stopped, the DU-640's send queue will be emptied before"
+ "reading is terminated. Data collected will be trashed.")
self.warningCleared = False
self.reader = Reader()
self.reader.experimental_data.connect(self.onExperimentFinished)
self.reader.data_live.connect(self.onExperimentUpdate)
self.reader.success_state.connect(self.onExperimentSuccess)
self.reader.fail_state.connect(self.onExperimentFailed)
self.reader.start()
else:
# Kill the currently running thread
alert = QMessageBox()
alert.setText(
"Won't start another read thread until current one finishes."
)
alert.exec_()
def onExperimentFailed(self):
self.collecting = False
self.collectToggle.setText('Start Collection')
alert = QMessageBox()
alert.setText("Could not open serial port."
+ "Ensure /dev/ttyAMA0 exists and is available, then try"
+ " again.")
alert.exec_()
def onExperimentUpdate(self, data):
if not self.warningCleared:
self.dataArea.setPlainText("")
self.warningCleared = True
cursor = self.dataArea.textCursor()
cursor.movePosition(QTextCursor.End)
cursor.insertText(data)
self.dataArea.ensureCursorVisible()
def onExperimentFinished(self, data):
self.dataArea.setPlainText(data)
self.collecting = False
self.collectToggle.setText('Start Collection')
def onExperimentSuccess(self):
self.collecting = False
self.collectToggle.setText('Start Collection')
def onClearOutputClicked(self):
self.dataArea.setPlainText("")
def onWriteButtonClicked(self):
options = QFileDialog.Options()
options |= QFileDialog.DontUseNativeDialog
filename, _ = QFileDialog.getSaveFileName(
self,
"QFileDialog.getSaveFileName()",
"",
"Text Files (*.txt)",
options=options)
if filename:
print("Saving to " + filename + ".txt...")
f = open(filename + '.txt', 'w')
f.write(self.dataArea.toPlainText() + '\n')
f.close()
def showSettings(self, data):
self.dataArea.setPlainText(data)
def onSettingsButtonClicked(self):
self.settings.show()
def onCheckButtonClicked(self):
self.settings.emitCurrentSettings()
if __name__ == '__main__':
app = QApplication(sys.argv)
MainWindow()
sys.exit(app.exec_())