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WeatherWidget.py
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WeatherWidget.py
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# -*- coding: utf-8 -*-
#-----------------------------------------------------------------------------
#
# Weather Widget
#
# Copyright (C) 2018 Florian Pose
#
# This file is part of Alarm Display.
#
# Alarm Display is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Alarm Display is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# Alarm Display. If not, see <http://www.gnu.org/licenses/>.
#
#-----------------------------------------------------------------------------
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtNetwork import *
#-----------------------------------------------------------------------------
class WeatherWidget(QWidget):
finished = pyqtSignal()
url = "https://www.dwd.de/DWD/warnungen/warnstatus/SchilderEM.jpg"
def __init__(self, config, logger):
super(WeatherWidget, self).__init__()
self.config = config
self.logger = logger
self.updateTimer = QTimer(self)
self.updateTimer.setInterval(5 * 60000)
self.updateTimer.setSingleShot(False)
self.updateTimer.timeout.connect(self.request)
self.updateTimer.start()
self.viewTimer = QTimer(self)
self.viewTimer.setInterval(10000)
self.viewTimer.setSingleShot(True)
self.viewTimer.timeout.connect(self.viewTimeout)
self.networkAccessManager = QNetworkAccessManager()
self.networkAccessManager.finished.connect(self.handleResponse)
horLayout = QHBoxLayout(self)
horLayout.setSpacing(0)
horLayout.setContentsMargins(0, 0, 0, 0)
label = QLabel(self)
label.setAlignment(Qt.AlignCenter)
horLayout.addWidget(label)
self.imageLabel = label
self.timeStamp = QDateTime()
self.request()
def start(self):
if self.dataValid():
self.viewTimer.start()
else:
self.finished.emit()
def stop(self):
self.viewTimer.stop()
def dataValid(self):
now = QDateTime.currentDateTime()
return self.timeStamp.isValid() and self.timeStamp.daysTo(now) == 0
def request(self):
req = QNetworkRequest(QUrl(self.url))
self.networkAccessManager.get(req)
def handleResponse(self, reply):
er = reply.error()
if er == QNetworkReply.NoError:
bytes_string = reply.readAll()
pixmap = QPixmap()
try:
pixmap.loadFromData(bytes_string)
self.imageLabel.setPixmap(pixmap)
self.timeStamp = QDateTime.currentDateTime()
except:
self.logger.error("Failed to set weather data.",
exc_info = True)
reply.deleteLater()
def viewTimeout(self):
self.finished.emit()
#-----------------------------------------------------------------------------