Adds a preference parameter for scroll sensitivity of the scope.

No mechanism for manipulating this value is within wfview yet.

prefs.h

@@ -167,6 +167,8 @@ struct preferences {
     int wftheme;
     int plotFloor;
     int plotCeiling;
+    int scopeScrollX;
+    int scopeScrollY;
     QString stylesheetPath;
     unsigned int wflength;
     bool confirmExit;

spectrumscope.cpp

@@ -1079,11 +1079,14 @@ void spectrumScope::waterfallClick(QMouseEvent *me)
 
 void spectrumScope::scroll(QWheelEvent *we)
 {
+    // angleDelta is supposed to be eights of a degree of mouse wheel rotation
+    int clicks = we->angleDelta().y() / scrollYperClick;
 
-    int clicks = we->angleDelta().y() / 120;
-
-    if (!(we->angleDelta().y() / 120))
+    if (!clicks) {
+        qInfo() << "Rejecting minor scroll motion, too small. Clicks: " << clicks << ", angleDelta: " << we->angleDelta().y();
+        qInfo() << "ScrollY per click: " << scrollYperClick;
         return;
+    }
 
     unsigned int stepsHz = stepSize;
 

spectrumscope.h

@@ -54,6 +54,7 @@ public:
 
     void setTuningFloorZeros(bool tf) {this->tuningFloorZeros = tf;}
     void setClickDragTuning(bool cg) { this->clickDragTuning = cg;}
+    void setScrollSpeedXY(int clicksX, int clicksY) { this->scrollXperClick = clicksX; this->scrollYperClick = clicksY;}
 
     void enableScope(bool en);
 
@@ -199,6 +200,8 @@ private:
     double oldPlotCeiling = 999;
     double mousePressFreq = 0.0;
     double mouseReleaseFreq = 0.0;
+    int scrollYperClick = 24;
+    int scrollXperClick = 24;
 
     passbandActions passbandAction = passbandStatic;
 

wfmain.cpp

@@ -1271,11 +1271,13 @@ void wfmain::setUIToPrefs()
     ui->mainScope->wfAntiAliased(prefs.wfAntiAlias);
     ui->mainScope->wfInterpolate(prefs.wfInterpolate);
     ui->mainScope->wfTheme(prefs.wftheme);
+    ui->mainScope->setScrollSpeedXY(prefs.scopeScrollX, prefs.scopeScrollY);
 
     ui->subScope->setUnderlayMode(prefs.underlayMode);
     ui->subScope->wfAntiAliased(prefs.wfAntiAlias);
     ui->subScope->wfInterpolate(prefs.wfInterpolate);
     ui->subScope->wfTheme(prefs.wftheme);
+    ui->subScope->setScrollSpeedXY(prefs.scopeScrollX, prefs.scopeScrollY);
 
     //    switch(underlayMode)
 //    {
@@ -1800,6 +1802,8 @@ void wfmain::setDefPrefs()
     defPrefs.wftheme = static_cast<int>(QCPColorGradient::gpJet);
     defPrefs.plotFloor = 0;
     defPrefs.plotCeiling = 160;
+    defPrefs.scopeScrollX = 16;
+    defPrefs.scopeScrollY = 16;
     defPrefs.confirmExit = true;
     defPrefs.confirmPowerOff = true;
     defPrefs.meter2Type = meterNone;
@@ -1851,6 +1855,8 @@ void wfmain::loadSettings()
     prefs.wftheme = settings->value("WFTheme", defPrefs.wftheme).toInt();
     prefs.plotFloor = settings->value("plotFloor", defPrefs.plotFloor).toInt();
     prefs.plotCeiling = settings->value("plotCeiling", defPrefs.plotCeiling).toInt();
+    prefs.scopeScrollX = settings->value("scopeScrollX", defPrefs.scopeScrollX).toInt();
+    prefs.scopeScrollY = settings->value("scopeScrollY", defPrefs.scopeScrollY).toInt();
     plotFloor = prefs.plotFloor;
     plotCeiling = prefs.plotCeiling;
     wfFloor = prefs.plotFloor;