gui/plotxy: implement background ticks

Improve trace readability when is displayed on xy plot.
The user is able to enable this option throughout preferences dialog.

Software/PC_Application/Traces/tracesmithchart.cpp

@@ -153,7 +153,7 @@ void TraceSmithChart::draw(QPainter &p) {
     p.drawArc(rectangle, 0, 5760);
 
     constexpr int Circles = 6;
-    pen = QPen(pref.Graphs.Color.divisions, 0.5, Qt::DashLine);
+    pen = QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine);
     pen.setCosmetic(true);
     p.setPen(pen);
     for(int i=1;i<Circles;i++) {

Software/PC_Application/Traces/tracexyplot.cpp

@@ -360,6 +360,7 @@ void TraceXYPlot::draw(QPainter &p)
     p.setPen(pen);
     plotAreaLeft = YAxis[0].type == YAxisType::Disabled ? yAxisDisabledSpace : yAxisSpace;
     plotAreaWidth = w.width();
+    plotAreaTop = 10;
     plotAreaBottom = w.height() - xAxisSpace;
     if(YAxis[0].type != YAxisType::Disabled) {
         plotAreaWidth -= yAxisSpace;
@@ -372,7 +373,7 @@ void TraceXYPlot::draw(QPainter &p)
         plotAreaWidth -= yAxisDisabledSpace;
     }
 
-    auto plotRect = QRect(plotAreaLeft, 0, plotAreaWidth + 1, plotAreaBottom);
+    auto plotRect = QRect(plotAreaLeft, plotAreaTop, plotAreaWidth + 1, plotAreaBottom-plotAreaTop);
     p.drawRect(plotRect);
 
     // draw axis types
@@ -437,8 +438,8 @@ void TraceXYPlot::draw(QPainter &p)
             }
             p.drawLine(xCoord, plotAreaBottom, xCoord, plotAreaBottom + 2);
             if(xCoord != plotAreaLeft && xCoord != plotAreaLeft + plotAreaWidth) {
-                p.setPen(QPen(pref.Graphs.Color.divisions, 0.5, Qt::DashLine));
-                p.drawLine(xCoord, 0, xCoord, plotAreaBottom);
+                p.setPen(QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine));
+                p.drawLine(xCoord, plotAreaTop, xCoord, plotAreaBottom);
             }
         }
     }
@@ -467,14 +468,18 @@ void TraceXYPlot::draw(QPainter &p)
                 step = max / 1000;
             }
             int significantDigits = floor(log10(max)) - floor(log10(step)) + 1;
-            for(auto t : YAxis[i].ticks) {
-                auto yCoord = Util::Scale<double>(t, YAxis[i].rangeMax, YAxis[i].rangeMin, 0, w.height() - xAxisSpace);
+
+            auto yCoordWidth = 0;
+            auto yCoordLast = 0;
+
+            for(unsigned int j = 0; j < YAxis[i].ticks.size(); j++) {
+                auto yCoord = Util::Scale<double>(YAxis[i].ticks[j], YAxis[i].rangeMax, YAxis[i].rangeMin, plotAreaTop, w.height() - xAxisSpace);
                 p.setPen(QPen(pref.Graphs.Color.axis, 1));
                 // draw tickmark on axis
                 auto tickStart = i == 0 ? plotAreaLeft : plotAreaLeft + plotAreaWidth;
                 auto tickLen = i == 0 ? -2 : 2;
                 p.drawLine(tickStart, yCoord, tickStart + tickLen, yCoord);
-                auto tickValue = Unit::ToString(t, "", "fpnum kMG", significantDigits);
+                auto tickValue = Unit::ToString(YAxis[i].ticks[j], "", "fpnum kMG", significantDigits);
                 if(i == 0) {
                     p.drawText(QRectF(0, yCoord - AxisLabelSize/2 - 2, tickStart + 2 * tickLen, AxisLabelSize), Qt::AlignRight, tickValue);
                 } else {
@@ -482,14 +487,25 @@ void TraceXYPlot::draw(QPainter &p)
                 }
 
                 // tick lines
-                if(yCoord == 0 || yCoord == w.height() - xAxisSpace) {
+                if(yCoord == plotAreaTop || yCoord == w.height() - xAxisSpace) {
                     // skip tick lines right on the plot borders
                     continue;
                 }
                 if(i == 0) {
                     // only draw tick lines for primary axis
-                    p.setPen(QPen(pref.Graphs.Color.divisions, 0.5, Qt::DashLine));
+                    p.setPen(QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine));
                     p.drawLine(plotAreaLeft, yCoord, plotAreaLeft + plotAreaWidth, yCoord);
+
+                    if (pref.Graphs.Color.Ticks.Background.enabled) {
+                        yCoordWidth =  floor((w.height() - xAxisSpace - plotAreaTop)/(YAxis[i].ticks.size()-1));
+                        if (j%2)
+                        {
+                            p.setBrush(pref.Graphs.Color.Ticks.Background.background);
+                            auto rect = QRect(plotAreaLeft, yCoord, plotAreaWidth, yCoordWidth);
+                            p.drawRect(rect);
+                        }
+                        yCoordLast = yCoord;
+                    }
                 }
             }
         }
@@ -947,7 +963,7 @@ QPoint TraceXYPlot::plotValueToPixel(QPointF plotValue, int Yaxis)
 {
     QPoint p;
     p.setX(Util::Scale<double>(plotValue.x(), XAxis.rangeMin, XAxis.rangeMax, plotAreaLeft, plotAreaLeft + plotAreaWidth));
-    p.setY(Util::Scale<double>(plotValue.y(), YAxis[Yaxis].rangeMin, YAxis[Yaxis].rangeMax, plotAreaBottom, 0));
+    p.setY(Util::Scale<double>(plotValue.y(), YAxis[Yaxis].rangeMin, YAxis[Yaxis].rangeMax, plotAreaBottom, plotAreaTop));
     return p;
 }
 
@@ -955,7 +971,7 @@ QPointF TraceXYPlot::pixelToPlotValue(QPoint pixel, int Yaxis)
 {
     QPointF p;
     p.setX(Util::Scale<double>(pixel.x(), plotAreaLeft, plotAreaLeft + plotAreaWidth, XAxis.rangeMin, XAxis.rangeMax));
-    p.setY(Util::Scale<double>(pixel.y(), plotAreaBottom, 0, YAxis[Yaxis].rangeMin, YAxis[Yaxis].rangeMax));
+    p.setY(Util::Scale<double>(pixel.y(), plotAreaBottom, plotAreaTop, YAxis[Yaxis].rangeMin, YAxis[Yaxis].rangeMax));
     return p;
 }
 

Software/PC_Application/Traces/tracexyplot.h

@@ -119,7 +119,7 @@ private:
     YAxis YAxis[2];
     XAxis XAxis;
 
-    int plotAreaLeft, plotAreaWidth, plotAreaBottom;
+    int plotAreaLeft, plotAreaWidth, plotAreaBottom, plotAreaTop;
 };
 
 #endif // TRACEXYPLOT_H

Software/PC_Application/preferences.cpp

@@ -134,7 +134,9 @@ PreferencesDialog::PreferencesDialog(Preferences *pref, QWidget *parent) :
         p->Acquisition.RBWLimitForDFT = ui->AcquisitionDFTlimitRBW->value();
         p->Graphs.Color.background = ui->GraphsColorBackground->getColor();
         p->Graphs.Color.axis = ui->GraphsColorAxis->getColor();
-        p->Graphs.Color.divisions = ui->GraphsColorDivisions->getColor();
+        p->Graphs.Color.Ticks.Background.enabled = ui->GraphsColorTicksBackgroundEnabled->isChecked();
+        p->Graphs.Color.Ticks.Background.background = ui->GraphsColorTicksBackground->getColor();
+        p->Graphs.Color.Ticks.divisions = ui->GraphsColorTicksDivisions->getColor();
         p->Graphs.domainChangeBehavior = (GraphDomainChangeBehavior) ui->GraphsDomainChangeBehavior->currentIndex();
         p->Graphs.markerBehavior.showDataOnGraphs = ui->GraphsShowMarkerData->isChecked();
         p->Graphs.markerBehavior.showAllData = ui->GraphsShowAllMarkerData->isChecked();
@@ -198,7 +200,9 @@ void PreferencesDialog::setInitialGUIState()
 
     ui->GraphsColorBackground->setColor(p->Graphs.Color.background);
     ui->GraphsColorAxis->setColor(p->Graphs.Color.axis);
-    ui->GraphsColorDivisions->setColor(p->Graphs.Color.divisions);
+    ui->GraphsColorTicksDivisions->setColor(p->Graphs.Color.Ticks.divisions);
+    ui->GraphsColorTicksBackgroundEnabled->setChecked(p->Graphs.Color.Ticks.Background.enabled);
+    ui->GraphsColorTicksBackground->setColor(p->Graphs.Color.Ticks.Background.background);
     ui->GraphsDomainChangeBehavior->setCurrentIndex((int) p->Graphs.domainChangeBehavior);
     ui->GraphsShowMarkerData->setChecked(p->Graphs.markerBehavior.showDataOnGraphs);
     ui->GraphsShowAllMarkerData->setChecked(p->Graphs.markerBehavior.showAllData);

Software/PC_Application/preferences.h

@@ -70,7 +70,13 @@ public:
         struct {
             QColor background;
             QColor axis;
-            QColor divisions;
+            struct {
+                QColor divisions;
+                struct {
+                    bool enabled;
+                    QColor background;
+                } Background;
+            } Ticks;
         } Color;
         GraphDomainChangeBehavior domainChangeBehavior;
         struct {
@@ -93,7 +99,7 @@ private:
         QString name;
         QVariant def;
     };
-    const std::array<SettingDescription, 35> descr = {{
+    const std::array<SettingDescription, 37> descr = {{
         {&Startup.ConnectToFirstDevice, "Startup.ConnectToFirstDevice", true},
         {&Startup.RememberSweepSettings, "Startup.RememberSweepSettings", false},
         {&Startup.DefaultSweep.type, "Startup.DefaultSweep.type", "Frequency"},
@@ -123,7 +129,9 @@ private:
         {&Acquisition.RBWLimitForDFT, "Acquisition.RBWLimitForDFT", 3000.0},
         {&Graphs.Color.background, "Graphs.Color.background", QColor(Qt::black)},
         {&Graphs.Color.axis, "Graphs.Color.axis", QColor(Qt::white)},
-        {&Graphs.Color.divisions, "Graphs.Color.divisions", QColor(Qt::gray)},
+        {&Graphs.Color.Ticks.Background.enabled, "Graphs.Color.Ticks.Background.enabled", true},
+        {&Graphs.Color.Ticks.Background.background, "Graphs.Color.Ticks.Background.background", QColor(Qt::white)},
+        {&Graphs.Color.Ticks.divisions, "Graphs.Color.Ticks.divisions", QColor(Qt::gray)},
         {&Graphs.domainChangeBehavior, "Graphs.domainChangeBehavior", GraphDomainChangeBehavior::AdjustGraphs},
         {&Graphs.markerBehavior.showDataOnGraphs, "Graphs.markerBehavior.ShowDataOnGraphs", true},
         {&Graphs.markerBehavior.showAllData, "Graphs.markerBehavior.ShowAllData", false},

Software/PC_Application/preferencesdialog.ui

@@ -13,8 +13,8 @@
   <property name="windowTitle">
    <string>Preferences</string>
   </property>
-  <layout class="QFormLayout" name="formLayout">
-   <item row="0" column="0">
+  <layout class="QVBoxLayout" name="verticalLayout_13">
+   <item>
     <layout class="QHBoxLayout" name="horizontalLayout" stretch="0,0">
      <item>
       <widget class="QTreeWidget" name="treeWidget">
@@ -78,7 +78,7 @@
         </size>
        </property>
        <property name="currentIndex">
-        <number>3</number>
+        <number>2</number>
        </property>
        <widget class="QWidget" name="Startup">
         <layout class="QHBoxLayout" name="horizontalLayout_4">
@@ -690,18 +690,53 @@
                 </property>
                </widget>
               </item>
-              <item row="2" column="0">
-               <widget class="QLabel" name="label_17">
-                <property name="text">
-                 <string>Divisions:</string>
+              <item row="3" column="0" colspan="2">
+               <widget class="QGroupBox" name="groupBox_13">
+                <property name="title">
+                 <string>Ticks</string>
                 </property>
-               </widget>
-              </item>
-              <item row="2" column="1">
-               <widget class="ColorPickerButton" name="GraphsColorDivisions">
-                <property name="text">
-                 <string/>
+                <property name="checkable">
+                 <bool>false</bool>
                 </property>
+                <layout class="QGridLayout" name="gridLayout">
+                 <item row="1" column="1">
+                  <widget class="ColorPickerButton" name="GraphsColorTicksBackground">
+                   <property name="text">
+                    <string/>
+                   </property>
+                   <property name="checkable">
+                    <bool>false</bool>
+                   </property>
+                   <property name="checked">
+                    <bool>false</bool>
+                   </property>
+                  </widget>
+                 </item>
+                 <item row="2" column="0">
+                  <widget class="QLabel" name="label_17">
+                   <property name="text">
+                    <string>Divisions:</string>
+                   </property>
+                  </widget>
+                 </item>
+                 <item row="2" column="1">
+                  <widget class="ColorPickerButton" name="GraphsColorTicksDivisions">
+                   <property name="text">
+                    <string/>
+                   </property>
+                  </widget>
+                 </item>
+                 <item row="1" column="0">
+                  <widget class="QCheckBox" name="GraphsColorTicksBackgroundEnabled">
+                   <property name="text">
+                    <string>Enable background</string>
+                   </property>
+                   <property name="checked">
+                    <bool>true</bool>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
                </widget>
               </item>
              </layout>
@@ -873,7 +908,7 @@
      </item>
     </layout>
    </item>
-   <item row="1" column="0">
+   <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>