Set waterfall lps or spectrum avg by space/typing

src/visual/MeterCanvas.cpp

@@ -52,6 +52,11 @@ void MeterCanvas::setMin(float min_in) {
     Refresh();
 }
 
+void MeterCanvas::setUserInputValue(float slider_in) {
+    userInputValue = slider_in;
+    Refresh();
+}
+
 void MeterCanvas::setInputValue(float slider_in) {
     userInputValue = inputValue = slider_in;
     Refresh();

src/visual/MeterCanvas.h

@@ -24,6 +24,7 @@ public:
     void setMax(float max_in);
     void setMin(float max_in);
 
+    void setUserInputValue(float slider_in);
     void setInputValue(float slider_in);
     bool inputChanged();
     float getInputValue();

src/visual/TuningCanvas.cpp

@@ -428,3 +428,7 @@ void TuningCanvas::OnKeyDown(wxKeyEvent& event) {
 void TuningCanvas::OnKeyUp(wxKeyEvent& event) {
     InteractiveCanvas::OnKeyUp(event);
 }
+
+TuningCanvas::ActiveState TuningCanvas::getHoverState() {
+    return hoverState;
+}

src/visual/TuningCanvas.h

@@ -28,6 +28,8 @@ public:
     void OnKeyDown(wxKeyEvent& event);
     void OnKeyUp(wxKeyEvent& event);
     
+    ActiveState getHoverState();
+    
 private:
     void OnPaint(wxPaintEvent& event);
     void OnIdle(wxIdleEvent &event);