Hide quick play indicator when other playback starts...

... but it can reappear when mouse moves.  You may still select a quick play
region during play, to jump playback.

src/toolbars/ControlToolBar.cpp

@@ -675,6 +675,10 @@ int ControlToolBar::PlayPlayRegion(const SelectedRegion &selectedRegion,
       return -1;
    }
 
+   // Let other UI update appearance
+   if (p)
+      p->GetRulerPanel()->HideQuickPlayIndicator();
+
    return token;
 }
 

src/widgets/Ruler.cpp

@@ -1897,6 +1897,13 @@ void AdornedRulerPanel::RegenerateTooltips()
 #endif
 }
 
+void AdornedRulerPanel::HideQuickPlayIndicator()
+{
+   mQuickPlayInd = false;
+   DrawQuickPlayIndicator(NULL);
+   Refresh(false);
+}
+
 void AdornedRulerPanel::OnCapture(wxCommandEvent & evt)
 {
    evt.Skip();
@@ -2668,8 +2675,8 @@ void AdornedRulerPanel::DrawQuickPlayIndicator(wxDC * dc)
 
    double latestEnd = std::max(mTracks->GetEndTime(), mProject->GetSel1());
    if (dc == NULL || (mQuickPlayPos >= latestEnd)) {
-      GetOverlay()->Update(-1);
       mLastQuickPlayX = -1;
+      GetOverlay()->Update(-1);
       return;
    }
 

src/widgets/Ruler.h

@@ -310,6 +310,7 @@ public:
 
    void UpdatePrefs();
    void RegenerateTooltips();
+   void HideQuickPlayIndicator();
 
 private:
    void OnCapture(wxCommandEvent & evt);