protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
int index = this.ItemContainerGenerator.IndexFromContainer(element);
SegmentItem segmentItem = element as SegmentItem;
if (segmentItem == null)
{
return;
}
if (index == 0)
{
segmentItem.IsFirstItem = true;
segmentItem.CornerRadius = new CornerRadius(this.CornerRadius.TopLeft, 0, 0, this.CornerRadius.BottomLeft);
}
if (index == this.Items.Count - 1)
{
segmentItem.IsLastItem = true;
segmentItem.CornerRadius = new CornerRadius(0, this.CornerRadius.TopRight, this.CornerRadius.BottomRight, 0);
}
if (this.IsAllRound)
{
segmentItem.CornerRadius = this.CornerRadius;
segmentItem.BorderThickness = new Thickness(0);
segmentItem.Padding = new Thickness(20, 5, 20, 5);
}
base.PrepareContainerForItemOverride(segmentItem, item);
}
/// <summary>
/// 设置SegmentItem的位置属性
/// </summary>
/// <param name="index"></param>
private void SetSegmentItem(int index)
{
if (index > this.Items.Count || index < 0)
{
return;
}
SegmentItem segmentItem = this.ItemContainerGenerator.ContainerFromIndex(index) as SegmentItem;
if (segmentItem == null)
{
return;
}
segmentItem.IsFirstItem = index == 0;
segmentItem.IsLastItem = index == this.Items.Count - 1;
segmentItem.IsMiddleItem = index > 0 && index < this.Items.Count - 1;
}