Improve old calibration import + graph pan/zoom settings

Software/PC_Application/LibreVNA-GUI/Calibration/calibration.cpp

@@ -1358,8 +1358,37 @@ void Calibration::fromJSON(nlohmann::json j)
                     // unknown measurement name
                     throw runtime_error("Measurement name unknown: "+std::string(j_m["name"]));
                 }
-                // no standard selection in this format, just use the first suitable one
-                m->setFirstSupportedStandard();
+                // attempt to select the correct standard
+                bool p1male = j.value("port1StandardMale", true);
+                bool p2male = j.value("port2StandardMale", true);
+                bool throughZeroLength = j.value("throughZeroLength", true);
+
+                auto onePort = dynamic_cast<CalibrationMeasurement::OnePort*>(m);
+                if(onePort) {
+                    bool male = onePort->getPort() == 1 ? p1male : p2male;
+                    QString name = male ? "Default male standard" : "Default female standard";
+                    for(auto s : m->supportedStandards()) {
+                        if(s->getName() == name) {
+                            m->setStandard(s);
+                            break;
+                        }
+                    }
+                }
+                auto through = dynamic_cast<CalibrationMeasurement::Through*>(m);
+                if(through) {
+                    if(throughZeroLength) {
+                        // needs to create a zero length through standard in the calkit in addition to the already existing through standard
+                        auto zerolength = new CalStandard::Through();
+                        zerolength->setName("Zero length");
+                        kit.addStandard(zerolength);
+                        // use this standard
+                        m->setStandard(zerolength);
+                    }
+                }
+                if(!m->getStandard()) {
+                    // failed to find specific standard, use the first available
+                    m->setFirstSupportedStandard();
+                }
                 // extract points
                 if(!j_m.contains("points")) {
                     throw runtime_error("Measurement "+name.toStdString()+" does not contain any points");

Software/PC_Application/LibreVNA-GUI/Calibration/calkit.cpp

@@ -354,6 +354,11 @@ std::vector<CalStandard::Virtual *> Calkit::getStandards() const
     return standards;
 }
 
+void Calkit::addStandard(CalStandard::Virtual *s)
+{
+    standards.push_back(s);
+}
+
 nlohmann::json Calkit::toJSON()
 {
     json j = Savable::createJSON(descr);

Software/PC_Application/LibreVNA-GUI/Calibration/calkit.h

@@ -47,6 +47,7 @@ public:
     void edit(std::function<void(void)> updateCal = nullptr);
 
     std::vector<CalStandard::Virtual *> getStandards() const;
+    void addStandard(CalStandard::Virtual* s);
 
     virtual nlohmann::json toJSON() override;
     virtual void fromJSON(nlohmann::json j) override;

Software/PC_Application/LibreVNA-GUI/Traces/traceplot.cpp

@@ -326,9 +326,10 @@ void TracePlot::finishContextMenu()
 
 void TracePlot::mousePressEvent(QMouseEvent *event)
 {
+    auto &pref = Preferences::getInstance();
     if(event->buttons() == Qt::LeftButton) {
         selectedMarker = markerAtPosition(event->pos(), true);
-        if(!selectedMarker && positionWithinGraphArea(event->pos())) {
+        if(!selectedMarker && pref.Graphs.enablePanAndZoom && positionWithinGraphArea(event->pos())) {
             // no marker at the position, enter trace moving mode
             movingGraph = true;
             lastMousePoint = event->pos();
@@ -337,7 +338,7 @@ void TracePlot::mousePressEvent(QMouseEvent *event)
     } else {
         selectedMarker = nullptr;
     }
-    if(event->button() == Qt::MiddleButton) {
+    if(pref.Graphs.enablePanAndZoom && event->button() == Qt::MiddleButton) {
         bool horizontally = !(QApplication::keyboardModifiers() & Qt::ShiftModifier);
         bool vertically = !(QApplication::keyboardModifiers() & Qt::ControlModifier);
         setAuto(horizontally, vertically);
@@ -392,10 +393,10 @@ void TracePlot::leaveEvent(QEvent *event)
 void TracePlot::wheelEvent(QWheelEvent *event)
 {
     auto &pref = Preferences::getInstance();
-    if(positionWithinGraphArea(event->pos())) {
+    if(pref.Graphs.enablePanAndZoom && positionWithinGraphArea(event->pos())) {
         bool horizontally = !(QApplication::keyboardModifiers() & Qt::ShiftModifier);
         bool vertically = !(QApplication::keyboardModifiers() & Qt::ControlModifier);
-        double factor = pow((1.0-pref.Graphs.zoomFactor), (double) event->angleDelta().y() / 120.0);
+        double factor = pow(pref.Graphs.zoomFactor, (double) event->angleDelta().y() / 120.0);
         zoom(event->pos(), factor, horizontally, vertically);
     }
 }

Software/PC_Application/LibreVNA-GUI/preferences.cpp

@@ -115,6 +115,9 @@ PreferencesDialog::PreferencesDialog(Preferences *pref, QWidget *parent) :
     connect(ui->AcquisitionADCpresc, qOverload<int>(&QSpinBox::valueChanged), updateIF2);
     connect(ui->AcquisitionADCphaseInc, qOverload<int>(&QSpinBox::valueChanged), updateIF2);
 
+    // Graph page
+    ui->GraphsZoomFactor->setPrecision(3);
+
     // General page
     if(p->TCPoverride) {
         ui->SCPIServerPort->setEnabled(false);
@@ -305,6 +308,8 @@ void PreferencesDialog::setInitialGUIState()
     ui->GraphsFontSizeCursorOverlay->setValue(p->Graphs.fontSizeCursorOverlay);
     ui->GraphsFontSizeMarkerData->setValue(p->Graphs.fontSizeMarkerData);
     ui->GraphsFontSizeTraceNames->setValue(p->Graphs.fontSizeTraceNames);
+    ui->GraphsEnablePanZoom->setChecked(p->Graphs.enablePanAndZoom);
+    ui->GraphsZoomFactor->setValue(p->Graphs.zoomFactor);
 
     ui->MarkerShowMarkerData->setChecked(p->Marker.defaultBehavior.showDataOnGraphs);
     ui->MarkerShowAllMarkerData->setChecked(p->Marker.defaultBehavior.showAllData);
@@ -376,6 +381,8 @@ void PreferencesDialog::updateFromGUI()
     p->Graphs.fontSizeCursorOverlay = ui->GraphsFontSizeCursorOverlay->value();
     p->Graphs.fontSizeMarkerData = ui->GraphsFontSizeMarkerData->value();
     p->Graphs.fontSizeTraceNames = ui->GraphsFontSizeTraceNames->value();
+    p->Graphs.enablePanAndZoom = ui->GraphsEnablePanZoom->isChecked();
+    p->Graphs.zoomFactor = ui->GraphsZoomFactor->value();
 
     p->Marker.defaultBehavior.showDataOnGraphs = ui->MarkerShowMarkerData->isChecked();
     p->Marker.defaultBehavior.showAllData = ui->MarkerShowAllMarkerData->isChecked();

Software/PC_Application/LibreVNA-GUI/preferences.h

@@ -129,6 +129,7 @@ public:
         int fontSizeTraceNames;
         int fontSizeCursorOverlay;
 
+        bool enablePanAndZoom;
         double zoomFactor;
     } Graphs;
     struct {
@@ -213,7 +214,8 @@ private:
         {&Graphs.fontSizeCursorOverlay, "Graphs.fontSizeCursorOverlay", 12},
         {&Graphs.fontSizeMarkerData, "Graphs.fontSizeMarkerData", 12},
         {&Graphs.fontSizeTraceNames, "Graphs.fontSizeTraceNames", 12},
-        {&Graphs.zoomFactor, "Graphs.zoomFactor", 0.2},
+        {&Graphs.enablePanAndZoom, "Graphs.enablePanAndZoom", true},
+        {&Graphs.zoomFactor, "Graphs.zoomFactor", 0.9},
         {&Marker.defaultBehavior.showDataOnGraphs, "Marker.defaultBehavior.ShowDataOnGraphs", true},
         {&Marker.defaultBehavior.showAllData, "Marker.defaultBehavior.ShowAllData", false},
         {&Marker.interpolatePoints, "Marker.interpolatePoints", false},

Software/PC_Application/LibreVNA-GUI/preferencesdialog.ui

@@ -83,8 +83,8 @@
          <rect>
           <x>0</x>
           <y>0</y>
-          <width>687</width>
-          <height>884</height>
+          <width>684</width>
+          <height>854</height>
          </rect>
         </property>
         <layout class="QHBoxLayout" name="horizontalLayout_12">
@@ -103,7 +103,7 @@
             </size>
            </property>
            <property name="currentIndex">
-            <number>0</number>
+            <number>2</number>
            </property>
            <widget class="QWidget" name="Startup">
             <layout class="QHBoxLayout" name="horizontalLayout_4">
@@ -1117,6 +1117,39 @@
                  </layout>
                 </widget>
                </item>
+               <item>
+                <widget class="QGroupBox" name="groupBox_18">
+                 <property name="title">
+                  <string>Pan and Zoom</string>
+                 </property>
+                 <layout class="QFormLayout" name="formLayout_13">
+                  <item row="0" column="0">
+                   <widget class="QLabel" name="label_46">
+                    <property name="text">
+                     <string>Enable:</string>
+                    </property>
+                   </widget>
+                  </item>
+                  <item row="0" column="1">
+                   <widget class="QCheckBox" name="GraphsEnablePanZoom">
+                    <property name="text">
+                     <string/>
+                    </property>
+                   </widget>
+                  </item>
+                  <item row="1" column="0">
+                   <widget class="QLabel" name="label_47">
+                    <property name="text">
+                     <string>Zoom factor:</string>
+                    </property>
+                   </widget>
+                  </item>
+                  <item row="1" column="1">
+                   <widget class="SIUnitEdit" name="GraphsZoomFactor"/>
+                  </item>
+                 </layout>
+                </widget>
+               </item>
                <item>
                 <widget class="QGroupBox" name="groupBox_12">
                  <property name="title">