/// <summary>
/// Show indicator for the specified index in listView.
/// </summary>
/// <param name="index">Index.</param>
/// <param name="listView">ListView.</param>
public virtual void Show(int index, ListViewBase listView)
{
if (index == -1)
{
Hide();
return;
}
var size = listView.IsHorizontal() ? listView.GetDefaultItemHeight() : listView.GetDefaultItemWidth();
var p = listView.GetItemPosition(index);
var pos = listView.IsHorizontal() ? new Vector2(p, 0f) : new Vector2(0f, -p);
var rectTransform = transform as RectTransform;
if (listView.IsHorizontal())
{
rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, size);
rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, 2f);
}
else
{
rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, size);
rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, 2f);
}
var items_per_block = listView.GetItemsPerBlock();
if (items_per_block == 1)
{
rectTransform.pivot = new Vector2(0.5f, 0.5f);
if (listView.IsHorizontal())
{
rectTransform.anchorMin = new Vector2(0f, 0.5f);
rectTransform.anchorMax = new Vector2(0f, 0.5f);
}
else
{
rectTransform.anchorMin = new Vector2(0.5f, 1f);
rectTransform.anchorMax = new Vector2(0.5f, 1f);
}
}
else
{
var index_in_block = index % items_per_block;
if (listView.IsHorizontal())
{
rectTransform.pivot = new Vector2(0f, 1f);
rectTransform.anchorMin = new Vector2(0f, 1f);
rectTransform.anchorMax = new Vector2(0f, 1f);
pos.y = -index_in_block * (listView.GetDefaultItemHeight() + listView.GetItemSpacingY());
}
else
{
rectTransform.pivot = new Vector2(0f, 0f);
rectTransform.anchorMin = new Vector2(0f, 1f);
rectTransform.anchorMax = new Vector2(0f, 1f);
pos.x = index_in_block * (listView.GetDefaultItemWidth() + listView.GetItemSpacingX());
}
}
rectTransform.anchoredPosition = pos;
rectTransform.SetParent(listView.Container, false);
rectTransform.SetAsLastSibling();
LayoutElement.ignoreLayout = true;
gameObject.SetActive(true);
}