/// <summary>
/// Method that can be invoked if external factors (e.g. alternate input modality preemptively invoked the target) force the dwell action to prematurely end
/// </summary>
public virtual void CancelDwell()
{
DwellCanceled.Invoke(pointer);
focusEnterTime = DateTime.MaxValue;
CurrentDwellState = DwellStateType.None;
focusExitTime = DateTime.MaxValue;
FillTimer = 0;
}
public void OnFocusChanged(FocusEventData eventData)
{
if (eventData.NewFocusedObject == gameObject &&
eventData.Pointer.InputSourceParent.SourceType == dwellProfile.DwellPointerType)
{
if (!HasFocus)
{
HasFocus = true;
// check intent to resume
if (CurrentDwellState == DwellStateType.DwellCanceled &&
(DateTime.UtcNow - focusExitTime) <= dwellProfile.TimeToAllowDwellResume)
{
// Add the time duration focus was away since this is a dwell resume and we need to account for the time that focus was lost for the target.
// Assigning this the current time would restart computation for dwell progress.
focusEnterTime = focusEnterTime.AddSeconds((DateTime.UtcNow - focusExitTime).TotalSeconds);
CurrentDwellState = DwellStateType.DwellStarted;
DwellStarted.Invoke(pointer);
}
// dwell state machine re-starts
else if (CurrentDwellState <= DwellStateType.DwellIntended)
{
focusEnterTime = DateTime.UtcNow;
CurrentDwellState = DwellStateType.FocusGained;
pointer = eventData.Pointer;
FillTimer = 0;
}
}
pointerCount++;
}
else if (eventData.OldFocusedObject == gameObject &&
eventData.Pointer.InputSourceParent.SourceType == dwellProfile.DwellPointerType)
{
pointerCount--;
if (pointerCount == 0)
{
HasFocus = false;
if (CurrentDwellState == DwellStateType.DwellStarted)
{
DwellCanceled.Invoke(eventData.Pointer);
CurrentDwellState = DwellStateType.DwellCanceled;
focusExitTime = DateTime.UtcNow;
}
else
{
CurrentDwellState = DwellStateType.None;
focusExitTime = DateTime.MaxValue;
}
}
}
}
public void OnFocusExit(FocusEventData eventData)
{
if (eventData.OldFocusedObject == gameObject &&
eventData.Pointer.InputSourceParent.SourceType == dwellProfile.DwellPointerType &&
pointer.InputSourceParent.SourceId == eventData.Pointer.InputSourceParent.SourceId)
{
HasFocus = false;
if (CurrentDwellState == DwellStateType.DwellStarted)
{
DwellCanceled.Invoke(eventData.Pointer);
CurrentDwellState = DwellStateType.DwellCanceled;
focusExitTime = DateTime.UtcNow;
}
else
{
CurrentDwellState = DwellStateType.None;
focusExitTime = DateTime.MaxValue;
}
}
}
