private void updateContentSize()
{
if (!AutoContentSize)
{
return;
}
if (_listItems.Count == 0)
{
return;
}
var content = GetComponent <ScrollRect>().content;
var allItemSize = getAllSizeItem();
float widthNew = content.rect.width;
float heightNew = content.rect.height;
Vector3 pivotNew = Vector3.zero;
switch (ScrollDirection)
{
case Direction.left_to_right:
{
widthNew = allItemSize.x + FirstItemOffset.x;
heightNew = getMaxHeightItem();
pivotNew = Pivot.LeftBottom;
break;
}
case Direction.right_to_left:
{
widthNew = allItemSize.x + FirstItemOffset.x;
heightNew = getMaxHeightItem();
pivotNew = Pivot.RightBottom;
break;
}
case Direction.down_to_top:
{
widthNew = getMaxWidthItem();
heightNew = allItemSize.y + FirstItemOffset.y;
pivotNew = Pivot.LeftBottom;
break;
}
case Direction.top_to_down:
{
widthNew = getMaxWidthItem();
heightNew = allItemSize.y + FirstItemOffset.y;
pivotNew = Pivot.LeftTop;
break;
}
default: Debug.LogError("updateContentSize error: unsupport direction !"); break;
}
content.sizeDelta = new Vector3(widthNew, heightNew);
var pos1 = UnityHepler.getWorldPositioByPivot(this.gameObject, pivotNew);
UnityHepler.setWorldPositionByPivot(content.gameObject, pos1, pivotNew);
checkCompoment();
}
private void updateItem(int index)
{
if (index < 0 || index > _listItems.Count - 1)
{
Debug.LogError("ListView updateItem error: out of range");
return;
}
var item = _listItems[index];
RectTransform content = GetComponent <ScrollRect>().content;
//calculate position
Vector3 pivotDecide = Vector3.zero;
Vector3 pivotAdd = Vector3.zero;
switch (ScrollDirection)
{
case Direction.left_to_right: pivotDecide = Pivot.LeftBottom; pivotAdd = Pivot.RightBottom; break;
case Direction.right_to_left: pivotDecide = Pivot.RightBottom; pivotAdd = Pivot.LeftBottom; break;
case Direction.down_to_top: pivotDecide = Pivot.LeftBottom; pivotAdd = Pivot.LeftTop; break;
case Direction.top_to_down: pivotDecide = Pivot.LeftTop; pivotAdd = Pivot.LeftBottom; break;
default: Debug.LogError("unsupport direction"); break;
}
if (index == 0)
{
if (ScrollDirection == Direction.right_to_left)
{
UnityHepler.setLocalPositionByPivot(item.current, new Vector3(content.rect.width, 0), pivotDecide);
}
else if (ScrollDirection == Direction.top_to_down)
{
UnityHepler.setLocalPositionByPivot(item.current, new Vector3(0, content.rect.height), pivotDecide);
}
else
{
UnityHepler.setLocalPositionByPivot(item.current, Vector3.zero, pivotDecide);
}
fixedLocalPositionByContent(item.current);
}
else
{
//first item of group
if (index % EachOfGroup == 0)
{
var prevItem = getItem((index / EachOfGroup - 1) * EachOfGroup);
Vector3 prevPosition = UnityHepler.getLocalPositioByPivot(prevItem, pivotAdd);
UnityHepler.setLocalPositionByPivot(item.current, prevPosition, pivotDecide);
fixedItemMargin(item.current, ItemMargin);
}
else
{
//next item of group
Vector3 prevPosition = UnityHepler.getLocalPositioByPivot(item.prev.current, _currentGroupItemPivotPrev);
UnityHepler.setLocalPositionByPivot(item.current, prevPosition, _currentGroupItemPivotNext);
fixedItemMargin(item.current, GroupItemMargin);
}
}
}
