def main(args):
def split_and_strip(s, splitter):
return [s.strip() for s in line.split(splitter)]
app = QApplication(args)
model = QStandardItemModel()
file = QFile(QFileInfo(__file__).absolutePath() + '/grades.txt')
if file.open(QFile.ReadOnly):
line = file.readLine(200).decode('utf-8')
header = split_and_strip(line, ',')
model.setHorizontalHeaderLabels(header)
row = 0
while file.canReadLine():
line = file.readLine(200).decode('utf-8')
if not line.startswith('#') and ',' in line:
fields = split_and_strip(line, ',')
for col, field in enumerate(fields):
newItem = QStandardItem(field)
model.setItem(row, col, newItem)
row += 1
file.close()
tableView = FreezeTableWidget(model)
tableView.setWindowTitle("Frozen Column Example")
tableView.resize(560, 680)
tableView.show()
return app.exec_()
def main(args):
def split_and_strip(s, splitter):
return [s.strip() for s in line.split(splitter)]
app = QApplication(args)
model = QStandardItemModel()
file = QFile(QFileInfo(__file__).absolutePath() + '/grades.txt')
if file.open(QFile.ReadOnly):
line = file.readLine(200).decode('utf-8')
header = split_and_strip(line, ',')
model.setHorizontalHeaderLabels(header)
row = 0
while file.canReadLine():
line = file.readLine(200).decode('utf-8')
if not line.startswith('#') and ',' in line:
fields = split_and_strip(line, ',')
for col, field in enumerate(fields):
newItem = QStandardItem(field)
model.setItem(row, col, newItem)
row += 1
file.close()
tableView = FreezeTableWidget(model)
tableView.setWindowTitle("Frozen Column Example")
tableView.resize(560, 680)
tableView.show()
return app.exec_()
class LogFilePositionSource(QGeoPositionInfoSource):
def __init__(self, parent=None):
super().__init__(parent)
self.lastPosition = QGeoPositionInfo()
self.logFile = QFile(self)
self.timer = QTimer(self)
self.timer.timeout.connect(self.readNextPosition)
self.logFile.setFileName(":/simplelog.txt")
if not self.logFile.open(QIODevice.ReadOnly):
print("Error: cannot open source file", self.logFile.fileName())
def lastKnownPosition(self, fromSatellitePositioningMethodsOnly=False):
return self.lastPosition
def supportedPositioningMethods(self):
return QGeoPositionInfoSource.AllPositioningMethods
def minimumUpdateInterval(self):
return 500
def error(self):
return QGeoPositionInfoSource.NoError
def startUpdates(self):
interval = self.updateInterval()
if interval < self.minimumUpdateInterval():
interval = self.minimumUpdateInterval()
self.timer.start(interval)
def stopUpdates(self):
self.timer.stop()
def requestUpdate(self, timeout=5000):
# For simplicity, ignore timeout - assume that if data is not available
# now, no data will be added to the file later
if self.logFile.canReadLine():
self.readNextPosition()
else:
self.updateTimeout.emit()
def readNextPosition(self):
line = self.logFile.readLine().trimmed()
if not line.isEmpty():
data = line.split(" ")
latitude = 0
longitude = 0
hasLatitude = False
hasLongitude = False
timestamp = QDateTime.fromString(data[0].data().decode(),
Qt.ISODate)
latitude, hasLatitude = data[1].toDouble()
longitude, hasLongitude = data[2].toDouble()
if hasLatitude and hasLongitude and timestamp.isValid():
coordinate = QGeoCoordinate(latitude, longitude)
info = QGeoPositionInfo(coordinate, timestamp)
if info.isValid():
self.lastPosition = info
self.positionUpdated.emit(info)
