Prevent solo-squelch focus from interrupting user actions; acts as temporary hold as well

src/AppFrame.cpp

@@ -1928,6 +1928,16 @@ void AppFrame::refreshGainUI() {
     gainCanvas->Refresh();
 }
 
+bool AppFrame::isUserDemodBusy() {
+    return (modemProps && modemProps->isMouseInView())
+        || (waterfallCanvas->isMouseInView() && waterfallCanvas->isMouseDown())
+        || (demodWaterfallCanvas->isMouseInView() && demodWaterfallCanvas->isMouseDown())
+        || (wxGetApp().getDemodMgr().getLastActiveDemodulator() &&
+            wxGetApp().getDemodMgr().getActiveDemodulator() &&
+            wxGetApp().getDemodMgr().getLastActiveDemodulator() != wxGetApp().getDemodMgr().getActiveDemodulator());
+}
+
+
 #ifdef _WIN32
 bool AppFrame::canFocus() {
 	return (!wxGetApp().isDeviceSelectorOpen() && (!modemProps || !modemProps->isMouseInView()));

src/AppFrame.h

@@ -101,6 +101,8 @@ public:
     void setViewState(long long center_freq, int bandwidth);
     void setViewState(long long center_freq);
     
+    bool isUserDemodBusy();
+        
 #ifdef _WIN32
 	bool canFocus();
 #endif

src/demod/DemodulatorThread.cpp

@@ -192,7 +192,7 @@ void DemodulatorThread::run() {
         
         if (squelchEnabled) {
             if (!squelched && !squelchBreak) {
-                    if (wxGetApp().getSoloMode()) {
+                    if (wxGetApp().getSoloMode() && !wxGetApp().getAppFrame()->isUserDemodBusy()) {
                         std::lock_guard < std::mutex > lock(squelchLockMutex);
                         if (squelchLock.load() == nullptr) {
                             squelchLock.store(demodInstance);
@@ -406,7 +406,7 @@ bool DemodulatorThread::getSquelchBreak() {
 
 void DemodulatorThread::releaseSquelchLock(DemodulatorInstance *inst) {
     std::lock_guard < std::mutex > lock(squelchLockMutex);
-    if (squelchLock.load() == inst) {
+    if (inst == nullptr || squelchLock.load() == inst) {
         squelchLock.store(nullptr);
     }
 }

src/visual/InteractiveCanvas.cpp

@@ -183,3 +183,11 @@ void InteractiveCanvas::OnMouseRightDown(wxMouseEvent& event) {
 void InteractiveCanvas::OnMouseRightReleased(wxMouseEvent& event) {
     mouseTracker.OnMouseRightReleased(event);
 }
+
+bool InteractiveCanvas::isMouseInView() {
+    return mouseTracker.mouseInView();
+}
+
+bool InteractiveCanvas::isMouseDown() {
+    return mouseTracker.mouseInView() && mouseTracker.mouseDown();
+}

src/visual/InteractiveCanvas.h

@@ -25,7 +25,9 @@ public:
     unsigned int getBandwidth();
 
     MouseTracker *getMouseTracker();
-
+    bool isMouseInView();
+    bool isMouseDown();
+    
     bool isAltDown();
     bool isCtrlDown();
     bool isShiftDown();

src/visual/WaterfallCanvas.cpp

@@ -730,6 +730,7 @@ void WaterfallCanvas::OnMouseReleased(wxMouseEvent& event) {
                 demod->run();
 
                 wxGetApp().bindDemodulator(demod);
+                DemodulatorThread::releaseSquelchLock(nullptr);
             }
 
             if (!demod) {