private void InitBackground()
{
if (!transform.parent)
{
return;
}
int childCount = transform.parent.childCount;
if (childCount > 2)
{
m_Background.runtimeActive = false;
}
else if (childCount == 1)
{
m_Background.runtimeActive = true;
}
else
{
m_Background.runtimeActive = false;
for (int i = 0; i < childCount; i++)
{
if (transform.parent.GetChild(i).name.StartsWith(s_BackgroundObjectName))
{
m_Background.runtimeActive = true;
break;
}
}
}
if (!m_Background.runtimeActive || m_IsControlledByLayout)
{
//find old gameobject and delete
var objName = s_BackgroundObjectName + GetInstanceID();
ChartHelper.DestoryGameObject(transform.parent, objName);
ChartHelper.DestoryGameObject(m_BackgroundRoot);
return;
}
if (!m_Background.show)
{
ChartHelper.DestoryGameObject(m_BackgroundRoot);
return;
}
var backgroundName = s_BackgroundObjectName;
m_BackgroundRoot = ChartHelper.AddObject(backgroundName, transform.parent, m_ChartMinAnchor,
m_ChartMaxAnchor, m_ChartPivot, m_ChartSizeDelta);
m_BackgroundRoot.hideFlags = chartHideFlags;
var backgroundImage = ChartHelper.GetOrAddComponent <Image>(m_BackgroundRoot);
var backgroundRect = m_BackgroundRoot.GetComponent <RectTransform>();
backgroundRect.position = rectTransform.position;
backgroundImage.sprite = m_Background.image;
backgroundImage.type = m_Background.imageType;
backgroundImage.color = m_Background.imageColor;
m_BackgroundRoot.SetActive(m_Background.show);
var siblindIndex = rectTransform.GetSiblingIndex();
if (siblindIndex == 0)
{
backgroundRect.SetSiblingIndex(0);
}
else
{
backgroundRect.SetSiblingIndex(rectTransform.GetSiblingIndex() - 1);
}
}
