kopia lustrzana https://github.com/NanoVNA-Saver/nanovna-saver
Merge branch 'split-file_NanoVNASaver.py_About.py' into split-file_NanoVNASaver.py
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# NanoVNASaver
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# A python program to view and export Touchstone data from a NanoVNA
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# Copyright (C) 2019. Rune B. Broberg
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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import logging
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import json
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from time import strftime, localtime
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from urllib import request, error
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from PyQt5 import QtWidgets, QtCore
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from NanoVNASaver.Hardware import Version
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logger = logging.getLogger(__name__)
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class AboutWindow(QtWidgets.QWidget):
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def __init__(self, app: QtWidgets.QWidget):
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super().__init__()
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self.app = app
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self.setWindowTitle("About NanoVNASaver")
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self.setWindowIcon(self.app.icon)
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top_layout = QtWidgets.QHBoxLayout()
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self.setLayout(top_layout)
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QtWidgets.QShortcut(QtCore.Qt.Key_Escape, self, self.hide)
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icon_layout = QtWidgets.QVBoxLayout()
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top_layout.addLayout(icon_layout)
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icon = QtWidgets.QLabel()
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icon.setPixmap(self.app.icon.pixmap(128, 128))
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icon_layout.addWidget(icon)
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icon_layout.addStretch()
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layout = QtWidgets.QVBoxLayout()
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top_layout.addLayout(layout)
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layout.addWidget(QtWidgets.QLabel(
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f"NanoVNASaver version {self.app.version}"))
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layout.addWidget(QtWidgets.QLabel(""))
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layout.addWidget(QtWidgets.QLabel(
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"\N{COPYRIGHT SIGN} Copyright 2019 Rune B. Broberg"))
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layout.addWidget(QtWidgets.QLabel(
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"This program comes with ABSOLUTELY NO WARRANTY"))
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layout.addWidget(QtWidgets.QLabel(
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"This program is licensed under the GNU General Public License version 3"))
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layout.addWidget(QtWidgets.QLabel(""))
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link_label = QtWidgets.QLabel(
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"For further details, see: <a href=\"https://mihtjel.github.io/nanovna-saver/\">"
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"https://mihtjel.github.io/nanovna-saver/</a>")
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link_label.setOpenExternalLinks(True)
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layout.addWidget(link_label)
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layout.addWidget(QtWidgets.QLabel(""))
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self.versionLabel = QtWidgets.QLabel("NanoVNA Firmware Version: Not connected.")
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layout.addWidget(self.versionLabel)
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layout.addStretch()
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btn_check_version = QtWidgets.QPushButton("Check for updates")
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btn_check_version.clicked.connect(self.findUpdates)
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self.updateLabel = QtWidgets.QLabel("Last checked: ")
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self.updateCheckBox = QtWidgets.QCheckBox("Check for updates on startup")
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self.updateCheckBox.toggled.connect(self.updateSettings)
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check_for_updates = self.app.settings.value("CheckForUpdates", "Ask")
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if check_for_updates == "Yes":
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self.updateCheckBox.setChecked(True)
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self.findUpdates(automatic=True)
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elif check_for_updates == "No":
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self.updateCheckBox.setChecked(False)
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else:
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logger.debug("Starting timer")
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QtCore.QTimer.singleShot(2000, self.askAboutUpdates)
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update_hbox = QtWidgets.QHBoxLayout()
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update_hbox.addWidget(btn_check_version)
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update_form = QtWidgets.QFormLayout()
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update_hbox.addLayout(update_form)
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update_hbox.addStretch()
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update_form.addRow(self.updateLabel)
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update_form.addRow(self.updateCheckBox)
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layout.addLayout(update_hbox)
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layout.addStretch()
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btn_ok = QtWidgets.QPushButton("Ok")
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btn_ok.clicked.connect(lambda: self.close()) # noqa
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layout.addWidget(btn_ok)
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def show(self):
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super().show()
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self.updateLabels()
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def updateLabels(self):
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if self.app.vna.isValid():
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logger.debug("Valid VNA")
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v: Version = self.app.vna.version
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self.versionLabel.setText(
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f"NanoVNA Firmware Version: {self.app.vna.name}"
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f"{v.version_string}")
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def updateSettings(self):
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if self.updateCheckBox.isChecked():
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self.app.settings.setValue("CheckForUpdates", "Yes")
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else:
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self.app.settings.setValue("CheckForUpdates", "No")
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def askAboutUpdates(self):
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logger.debug("Asking about automatic update checks")
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selection = QtWidgets.QMessageBox.question(
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self.app,
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"Enable checking for updates?",
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"Would you like NanoVNA-Saver to check for updates automatically?")
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if selection == QtWidgets.QMessageBox.Yes:
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self.updateCheckBox.setChecked(True)
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self.app.settings.setValue("CheckForUpdates", "Yes")
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self.findUpdates()
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elif selection == QtWidgets.QMessageBox.No:
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self.updateCheckBox.setChecked(False)
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self.app.settings.setValue("CheckForUpdates", "No")
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QtWidgets.QMessageBox.information(
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self.app,
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"Checking for updates disabled",
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"You can check for updates using the \"About\" window.")
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else:
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self.app.settings.setValue("CheckForUpdates", "Ask")
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def findUpdates(self, automatic=False):
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update_url = "http://mihtjel.dk/nanovna-saver/latest.json"
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try:
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req = request.Request(update_url)
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req.add_header('User-Agent', "NanoVNA-Saver/" + self.app.version)
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updates = json.load(request.urlopen(req, timeout=3))
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latest_version = Version(updates['version'])
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latest_url = updates['url']
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except error.HTTPError as e:
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logger.exception("Checking for updates produced an HTTP exception: %s", e)
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self.updateLabel.setText("Connection error.")
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return
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except json.JSONDecodeError as e:
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logger.exception("Checking for updates provided an unparseable file: %s", e)
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self.updateLabel.setText("Data error reading versions.")
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return
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except error.URLError as e:
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logger.exception("Checking for updates produced a URL exception: %s", e)
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self.updateLabel.setText("Connection error.")
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return
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logger.info("Latest version is %s", latest_version.version_string)
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this_version = Version(self.app.version)
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logger.info("This is %s", this_version)
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if latest_version > this_version:
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logger.info("New update available: %s!", latest_version)
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if automatic:
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QtWidgets.QMessageBox.information(
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self,
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"Updates available",
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"There is a new update for NanoVNA-Saver available!\n" +
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"Version " + latest_version.version_string + "\n\n" +
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"Press \"About\" to find the update.")
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else:
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QtWidgets.QMessageBox.information(
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self, "Updates available",
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"There is a new update for NanoVNA-Saver available!")
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self.updateLabel.setText(
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f'<a href="{latest_url}">New version available</a>.')
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self.updateLabel.setOpenExternalLinks(True)
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else:
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# Probably don't show a message box, just update the screen?
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# Maybe consider showing it if not an automatic update.
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#
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self.updateLabel.setText(
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f"Last checked: {strftime('%Y-%m-%d %H:%M:%S', localtime())}")
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return
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