public ScreenRangeChangedEvent(IndexRange range)
{
this.Range = range;
}
public IndexRange Intersect(IndexRange range) => CreateFromBeginAndEnd(Mathf.Max(this.Position, range.Position), Mathf.Min(this.EndPosition, range.EndPosition));
public bool Equals(IndexRange other) => (this.Position == other.Position) && (this.Count == other.Count);
public void CalculateDifference(IndexRange newRange, out IndexRange removedLow, out IndexRange removedHigh, out IndexRange addedLow, out IndexRange addedHigh)
{
removedLow = new IndexRange();
removedHigh = new IndexRange();
addedLow = new IndexRange();
addedHigh = new IndexRange();
if (newRange.Position > this.Position)
{
removedLow.Position = this.Position;
removedLow.Count = Mathf.Min(newRange.Position, this.EndPosition + 1) - this.Position;
}
else if (newRange.Position < this.Position)
{
addedLow.Position = newRange.Position;
addedLow.Count = Mathf.Min(this.Position, newRange.EndPosition + 1) - newRange.Position;
}
if (newRange.EndPosition < this.EndPosition)
{
removedHigh.Position = Mathf.Max(newRange.EndPosition + 1, this.Position);
removedHigh.Count = (this.EndPosition - removedHigh.Position) + 1;
}
else if (newRange.EndPosition > this.EndPosition)
{
addedHigh.Position = Mathf.Max(this.EndPosition + 1, newRange.Position);
addedHigh.Count = (newRange.EndPosition - addedHigh.Position) + 1;
}
}
private IndexRange CalculateScreenRange() => IndexRange.CreateFromBeginAndEnd(this.PositionToItemIndexUnclamped(this.position + 0.01f), this.PositionToItemIndexUnclamped((this.position + this.pageSize) - 0.01f));