viewerpanelbase: stop playback when panel is defocused

app/panel/panelmanager.cpp

@@ -28,7 +28,8 @@ PanelManager* PanelManager::instance_ = nullptr;
 
 PanelManager::PanelManager(QObject *parent) :
   QObject(parent),
-  locked_(false)
+  locked_(false),
+  suppress_changed_signal_(false)
 {
 }
 
@@ -165,7 +166,9 @@ void PanelManager::FocusChanged(QWidget *old, QWidget *now)
           focus_history_.move(panel_index, 0);
         }
 
-        emit FocusedPanelChanged(panel_cast_test);
+        if (!suppress_changed_signal_) {
+          emit FocusedPanelChanged(panel_cast_test);
+        }
       }
 
       break;

app/panel/panelmanager.h

@@ -122,6 +122,11 @@ public:
    */
   void UnregisterPanel(PanelWidget *panel);
 
+  void SetSuppressChangedSignal(bool e)
+  {
+    suppress_changed_signal_ = e;
+  }
+
 public slots:
   /**
    * @brief Connect this to a QApplication's SIGNAL(focusChanged())
@@ -157,6 +162,8 @@ private:
    */
   static PanelManager* instance_;
 
+  bool suppress_changed_signal_;
+
 };
 
 template<class T>

app/panel/viewer/viewerbase.cpp

@@ -27,6 +27,7 @@ namespace olive {
 ViewerPanelBase::ViewerPanelBase(const QString& object_name, QWidget *parent) :
   TimeBasedPanel(object_name, parent)
 {
+  connect(PanelManager::instance(), &PanelManager::FocusedPanelChanged, this, &ViewerPanelBase::FocusedPanelChanged);
 }
 
 void ViewerPanelBase::PlayPause()
@@ -101,4 +102,12 @@ void ViewerPanelBase::SetViewerWidget(ViewerWidget *vw)
   SetTimeBasedWidget(vw);
 }
 
+void ViewerPanelBase::FocusedPanelChanged(PanelWidget *panel)
+{
+  auto vw = static_cast<ViewerWidget*>(GetTimeBasedWidget());
+  if (vw->IsPlaying() && panel != this) {
+    vw->Pause();
+  }
+}
+
 }

app/panel/viewer/viewerbase.h

@@ -93,6 +93,9 @@ signals:
 protected:
   void SetViewerWidget(ViewerWidget *vw);
 
+private slots:
+  void FocusedPanelChanged(PanelWidget *panel);
+
 };
 
 }

app/window/mainwindow/mainwindow.cpp

@@ -314,9 +314,18 @@ void MainWindow::ToggleMaximizedPanel()
       }
     }
   } else {
+    // Preserve currently focused panel
+    auto currently_focused_panel = PanelManager::instance()->CurrentlyFocused(false);
+
     // Assume we are currently maximized, restore the state
+    PanelManager::instance()->SetSuppressChangedSignal(true);
     restoreState(premaximized_state_);
     premaximized_state_.clear();
+
+    currently_focused_panel->raise();
+    currently_focused_panel->setFocus();
+
+    PanelManager::instance()->SetSuppressChangedSignal(false);
   }
 }