public double GetMouseToKeyboardTransitionCost(KeyDownEvent keyDownEvent)
{
PhysicalKey key = FindKey(keyDownEvent.Data);
if (key != null)
{
KeyboardSection parentSection = key.ParentSection;
if (parentSection.Handedness == Handedness.Right)
{
lastMouseHandedAction = ActionType.Keyboard;
if (MousePad == null)
{
throw new Exception("MousePad not specified.");
}
if (mousePadCenter.X == double.MinValue)
{
CalculateMousePadCenterPoint();
}
double travelDistance = MillerComplexity.GetDistance(parentSection.Center, mousePadCenter);
double targetApproachWidth = MillerComplexity.GetTargetApproachWidth(key.Size.Width, key.Size.Height);
return(MillerComplexity.GetTargetPressScore(travelDistance, targetApproachWidth));
}
}
return(0);
}
public double GetReachingForMouseTransitionCost()
{
if (MousePad == null)
{
throw new Exception("MousePad not specified.");
}
if (mousePadCenter.X == double.MinValue)
{
CalculateMousePadCenterPoint();
}
if (MousePad.Mouse == null)
{
throw new Exception("Mouse not specified.");
}
KeyboardSection nearestSection = GetLastTouchedSectionClosestToMouse();
if (nearestSection == null)
{
throw new Exception("A keyboard section near the mouse was not found.");
}
double travelDistance = MillerComplexity.GetDistance(nearestSection.Center, mousePadCenter);
double targetApproachWidth = MousePad.Mouse.Width; // Mouse is nearly always approached from the left or right;
lastMouseHandedAction = ActionType.Mouse;
return(MillerComplexity.GetTargetPressScore(travelDistance, targetApproachWidth));
}
double CalculateCost(PhysicalKey key)
{
if (KeyIsARepeat(key))
{
return(MillerComplexity.GetCostOfRepeatHit(key.EffectiveTargetApproachWidth));
}
const double DBL_AverageDistanceToSpaceBarWhileHandsNearHomeKeys = 1.4; /* cm */
if (SpaceBarHitWhileHandsAtHomeRow(key))
{
return(MillerComplexity.GetTargetPressScore(DBL_AverageDistanceToSpaceBarWhileHandsNearHomeKeys, key.EffectiveTargetApproachWidth)); // Space bar hit and at least one hand is near the home key row position.
}
return(MillerComplexity.GetTargetPressScore(GetShortestDistanceToKey(key), key.EffectiveTargetApproachWidth));
}
public override double GetMillerComplexityScore(Event previousEvent)
{
return(GetBaseComplexityScore(previousEvent) + MillerComplexity.GetMouseDownScore(Duration.TotalMilliseconds) +
MillerComplexity.GetTargetPressScore(GetPreviousMouseTravelDistance(previousEvent), MillerComplexity.DefaultMouseTargetWidth));
}