public void EnterWaitState()
{
//these flags are here so that they get reset before anything else happens in the SM
//these were previously in the action method but that causes issues because the update state is run again before all of the flags are reset.
zoomer.ResetZoomLens();
magnifier.Stop();
SystemFlags.fixationRunning = false;
SystemFlags.actionButtonSelected = false;
SystemFlags.fixationRunning = false;
SystemFlags.hasGaze = false;
SystemFlags.timeOut = false;
fixationWorker.IsZoomerFixation(false);
currentState = SystemState.Wait;
SystemFlags.currentState = SystemState.Wait;
zoomer.Refresh();
fixationWorker = new FixationDetection();
}
public void RefreshZoom()
{
magnifier.Stop();
zoomer = new ZoomLens();
magnifier = CreateMagnifier();
zoomer.ResetZoomLens();
magnifier.ResetZoomValue();
EnterWaitState();
}
/*
* Called from UpdateState() when the system state is in the ZoomWait phase
*/
public void UpdateZoomWaitState()
{
if (SystemFlags.hasGaze) //if the second zoomGaze has happed an action needs to be performed
{
SetState(SystemState.ApplyAction);
}
else if (SystemFlags.timeOut)
{
EnterWaitState();
zoomForm.ResetZoomLens();
}
}
//The update method is responsible for transitioning from state to state. Once a state is changed the action() method is run
public void UpdateState()
{
currentState = SystemFlags.currentState;
switch (currentState)
{
case SystemState.Wait:
if (SystemFlags.actionButtonSelected) //if a button has been selected from the toolbar
{
currentState = SystemState.ActionButtonSelected;
SystemFlags.actionButtonSelected = false;
}
else if (SystemFlags.shortCutKeyPressed)
{
currentState = SystemState.Zooming;
}
break;
case SystemState.ActionButtonSelected:
SystemFlags.hasSelectedButtonColourBeenReset = false;
if (SystemFlags.gaze)
{
currentState = SystemState.Zooming;
}
else if (SystemFlags.timeOut)
{
EnterWaitState();
SystemFlags.timeOut = false;
}
break;
case SystemState.Zooming:
if (SystemFlags.actionToBePerformed == ActionToBePerformed.Scroll)
{
currentState = SystemState.ApplyAction;
}
else
{
currentState = SystemState.ZoomWait;
}
break;
case SystemState.ZoomWait:
if (SystemFlags.gaze) //if the second zoomGaze has happed an action needs to be performed
{
currentState = SystemState.ApplyAction;
}
else if (SystemFlags.timeOut)
{
EnterWaitState();
zoomer.ResetZoomLens();
}
break;
case SystemState.ScrollWait:
if (!SystemFlags.scrolling)
{
EnterWaitState();
}
break;
case SystemState.ApplyAction:
if (SystemFlags.scrolling)
{
currentState = SystemState.ScrollWait;
}
else
{
EnterWaitState();
}
break;
}
SystemFlags.currentState = currentState;
}
