Readding helper, adding changelog!

LogarithmPlotter/helper.py

@@ -0,0 +1,150 @@
+"""
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and repartition functions.
+ *  Copyright (C) 2022  Ad5001
+ * 
+ *  This program 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.
+ * 
+ *  This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
+from PySide2.QtWidgets import QMessageBox, QApplication
+from PySide2.QtCore import QRunnable, QThreadPool, QThread, QObject, Signal, Slot, QCoreApplication
+from PySide2.QtQml import QQmlApplicationEngine
+from PySide2.QtGui import QImage
+from PySide2 import __version__ as PySide2_version
+
+from os import chdir, path
+from json import loads
+from webbrowser import open as openWeb
+from sys import version as sys_version
+from urllib.request import urlopen
+from urllib.error import HTTPError, URLError
+
+
+from LogarithmPlotter import config, __VERSION__
+
+class ChangelogFetcher(QRunnable):
+    def __init__(self, helper):
+        QRunnable.__init__(self)
+        self.helper = helper
+        
+    def run(self):
+        msg_text = "Unknown changelog error."
+        try:
+            # Fetching version
+            r = urlopen("https://api.ad5001.eu/changelog/logarithmplotter/")
+            lines = r.readlines()
+            r.close()
+            msg_text =  "".join(map(lambda x: x.decode('utf-8'), lines)).strip()
+        except HTTPError as e:
+            msg_text = QCoreApplication.translate("changelog","Could not fetch changelog: Server error {}.").format(str(e.code))
+        except URLError as e:
+            msg_text = QCoreApplication.translate("changelog","Could not fetch update: {}.").format(str(e.reason))
+        self.helper.gotChangelog.emit(msg_text)
+
+class Helper(QObject):
+    changelogFetched = Signal(str)
+    gotChangelog = Signal(str)
+    
+    def __init__(self, cwd: str, tmpfile: str):
+        QObject.__init__(self)
+        self.cwd = cwd
+        self.tmpfile = tmpfile
+        self.gotChangelog.connect(self.fetched)
+
+    def fetched(self, changelog: str):
+        self.changelogFetched.emit(changelog)
+        
+    @Slot(str, str)
+    def write(self, filename, filedata):
+        chdir(self.cwd)
+        if path.exists(path.dirname(path.realpath(filename))):
+            if filename.split(".")[-1] == "lpf":
+                # Add header to file
+                filedata = "LPFv1" + filedata
+            f = open(path.realpath(filename), 'w',  -1, 'utf8')
+            f.write(filedata)
+            f.close()
+        chdir(path.dirname(path.realpath(__file__)))
+        
+    @Slot(str, result=str)
+    def load(self, filename):
+        chdir(self.cwd)
+        data = '{}'
+        if path.exists(path.realpath(filename)):
+            f = open(path.realpath(filename), 'r',  -1, 'utf8')
+            data = f.read()
+            f.close()
+            try:
+                if data[:5] == "LPFv1":
+                    # V1 version of the file
+                    data = data[5:]
+                elif data[0] == "{" and "type" in loads(data) and loads(data)["type"] == "logplotv1":
+                    pass
+                else:
+                    raise Exception("Invalid LogarithmPlotter file.")
+            except Exception as e: # If file can't be loaded
+                QMessageBox.warning(None, 'LogarithmPlotter', QCoreApplication.translate('main','Could not open file "{}":\n{}').format(filename, e), QMessageBox.Ok) # Cannot parse file
+        else:
+            QMessageBox.warning(None, 'LogarithmPlotter', QCoreApplication.translate('main','Could not open file: "{}"\nFile does not exist.').format(filename), QMessageBox.Ok) # Cannot parse file
+        chdir(path.dirname(path.realpath(__file__)))
+        return data
+    
+    @Slot(result=str)
+    def gettmpfile(self):
+        return self.tmpfile
+    
+    @Slot()
+    def copyImageToClipboard(self):
+        clipboard = QApplication.clipboard()
+        clipboard.setImage(QImage(self.tmpfile))
+    
+    @Slot(result=str)
+    def getVersion(self):
+        return __VERSION__
+    
+    @Slot(str, result=str)
+    def getSetting(self, namespace):
+        return config.getSetting(namespace)
+    
+    @Slot(str, result=bool)
+    def getSettingBool(self, namespace):
+        return config.getSetting(namespace)
+    
+    @Slot(str, str)
+    def setSetting(self, namespace, value):
+        return config.setSetting(namespace, value)
+    
+    @Slot(str, bool)
+    def setSettingBool(self, namespace, value):
+        return config.setSetting(namespace, value)
+    
+    @Slot(str)
+    def setLanguage(self, new_lang):
+        config.setSetting("language", new_lang)
+    
+    @Slot(result=str)
+    def getDebugInfos(self):
+        """
+        Returns the version info about Qt, PySide2 & Python
+        """
+        return QCoreApplication.translate('main',"Built with PySide2 (Qt) v{} and python v{}").format(PySide2_version, sys_version.split("\n")[0])
+    
+    @Slot(str)
+    def openUrl(self, url):
+        openWeb(url)
+    
+    @Slot()
+    def fetchChangelog(self):
+        runnable = ChangelogFetcher(self)
+        QThreadPool.globalInstance().start(runnable)
+

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/LogarithmPlotter.qml

@@ -48,6 +48,8 @@ ApplicationWindow {
     
     Popup.GreetScreen {}
     
+    Popup.Changelog {id: changelog}
+    
     Popup.About {id: about}
     
     Popup.Alert {

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Popup/Changelog.qml

@@ -0,0 +1,73 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and repartition functions.
+ *  Copyright (C) 2022  Ad5001
+ * 
+ *  This program 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.
+ * 
+ *  This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+
+Popup {
+    id: changelogPopup
+    x: (parent.width-width)/2
+    y: Math.max(20, (parent.height-height)/2)
+    width: changelog.width+40
+    height: Math.min(parent.height-40, 500)
+    modal: true
+    focus: true
+    closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutside
+    
+    property bool changelogNeedsFetching: true
+    
+    onAboutToShow: if(changelogNeedsFetching) Helper.fetchChangelog()
+    
+    Connections {
+        target: Helper
+        function onChangelogFetched(chl) {
+            changelogNeedsFetching = false;
+            changelog.text = chl
+        }
+    }
+
+    ScrollView {
+        anchors.top: parent.top
+        anchors.topMargin: 10
+        anchors.left: parent.left
+        anchors.leftMargin: 10
+        anchors.bottom: doneBtn.top
+        anchors.bottomMargin: 10
+        clip: true
+
+        Label {
+            id: changelog
+            color: sysPalette.windowText
+            textFormat: TextEdit.MarkdownText
+
+            text: qsTr("Fetching changelog...")
+            onLinkActivated: Helper.openUrl(link)
+
+        }
+    }
+    
+    Button {
+        id: doneBtn
+        text: qsTr("Done")
+        font.pixelSize: 18
+        anchors.bottom: parent.bottom
+        anchors.bottomMargin: 10
+        anchors.horizontalCenter: parent.horizontalCenter
+        onClicked: changelogPopup.close()
+    }
+}

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Popup/GreetScreen.qml

@@ -108,14 +108,25 @@ Popup {
         }
     }
     
-    Button {
-        text: qsTr("Done")
-        font.pixelSize: 20
+    Row {
         anchors.bottom: parent.bottom
         anchors.bottomMargin: 10
         anchors.horizontalCenter: parent.horizontalCenter
+        
+        Button {
+            id: changelogBtn
+            text: qsTr("Changelog")
+            font.pixelSize: 18
+            onClicked: changelog.open()
+        }
+        
+        Button {
+            id: doneBtn
+            text: qsTr("Done")
+            font.pixelSize: 18
             onClicked: greetingPopup.close()
         }
+    }
     
     Timer {
         running: Helper.getSetting("last_install_greet") != Helper.getVersion()

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Popup/qmldir

@@ -4,5 +4,5 @@ About 1.0 About.qml
 Alert 1.0 Alert.qml
 FileDialog 1.0 FileDialog.qml
 GreetScreen 1.0 GreetScreen.qml
-
+Changelog 1.0 Changelog.qml