internal void OnMouseWheel(Control sender, Messages.MouseWheel args)
{
if (!CanScroll)
{
return;
}
var direction = args.Direction == Messages.MouseWheel.Directions.Down ? 1 : -1;
var step = args.ScrollSteps * ScrollStep;
// Don't tween if the new position is the same as the previous position
var tweenTo = -Math.Min(MaxViewIndex, Math.Max(0, -CurrentViewIndex + direction * step));
if (tweenTo == CurrentViewIndex)
{
return;
}
if (CurrentTween != null)
{
CurrentTween.Cancel();
}
CurrentTween = Tweener.Tween(this, new { CurrentViewIndex = -Math.Min(MaxViewIndex, Math.Max(0, -CurrentViewIndex + direction * step)) }, 0.5f);
CurrentTween.Ease(Ease.CircOut);
CurrentTween.OnBegin(delegate { Tweening = true; });
CurrentTween.OnComplete(delegate { Tweening = false; });
}
internal bool CheckScrollbarDown(Vector2 mousePosition)
{
// Check if mouse is on scrollbar
if (IsScrollbarNeeded && ScrollbarArea.Contains(Game.CursorPos2D))
{
// Calculate new move offset
MoveOffset = (int)(ScrollbarIndex - mousePosition.Y);
// Allow the scrollbar to move
IsScrollbarMoving = true;
// Cancel current tween
if (CurrentTween != null)
{
CurrentTween.Cancel();
Tweening = false;
}
return(true);
}
return(false);
}