Added ability for sub windows to get frames much more rapidly than

before. Decoupled SerialWorker from MainWindow a bit and refactored
things.

mainwindow.h

@@ -75,6 +75,7 @@ private slots:
     void gridDoubleClicked(QModelIndex);
     void interpretToggled(bool);
     void overwriteToggled(bool);
+    void tickGUIUpdate();
     void toggleCapture();
     void normalizeTiming();
     void updateFilterList();
@@ -83,7 +84,7 @@ private slots:
     void filterClearAll();
 
 public slots:
-    void gotFrames(int, int);
+    void gotFrames(int);
     void updateSettings();
     void gotCenterTimeID(int32_t ID, double timestamp);
     void updateConnectionSettings(QString connectionType, QString port, int speed0, int speed1);
@@ -98,6 +99,7 @@ signals:
 
     //-1 = frames cleared, -2 = a new file has been loaded (so all frames are different), otherwise # of new frames
     void framesUpdated(int numFrames); //something has updated the frame list
+    void frameUpdateRapid(int numFrames);
     void settingsUpdated();
     void sendCenterTimeID(int32_t ID, double timestamp);
 
@@ -111,6 +113,10 @@ private:
     QThread serialWorkerThread;
     SerialWorker *worker;
     QByteArray inputBuffer;
+    QTimer updateTimer;
+    QTime *elapsedTime;
+    int framesPerSec;
+    int rxFrames;
     bool inhibitFilterUpdate;
     bool useHex;
     bool allowCapture;