private void DetermineColumnFate(CanvasColumn canvasColumn, List<CanvasColumn> recycleList, List<CanvasColumn> realizeList)
{
// if it's outside realized bounds
if (IsOutsideRealizedBounds(canvasColumn.CanvasPosition))
{
if (canvasColumn.IsRealized)
{
recycleList.Add(canvasColumn);
}
}
else
{
if (!canvasColumn.IsRealized)
{
realizeList.Add(canvasColumn);
}
}
}
private async Task GenerateColumn(bool isFront)
{
double newHorizontalPosition = isFront ? this.ForwardFrontier : this.RearFrontier - _columnWidth;
CanvasColumn ccol = new CanvasColumn(this, _fiSource, _cpCache, newHorizontalPosition, _canvasColumnList.Count);
if (isFront)
{
_canvasColumnList.Add(ccol);
}
else
{
_canvasColumnList.Insert(0, ccol);
}
await ccol.LoadItems(this.InnerSize, isFront);
OnColumnLoaded();
}
