/// <summary>
/// 获得指定区域缩放的类目数据列表
/// </summary>
/// <param name="dataZoom">区域缩放</param>
/// <returns></returns>
internal List <string> GetDataList(DataZoom dataZoom)
{
if (dataZoom != null && dataZoom.enable && dataZoom.IsContainsAxis(this))
{
UpdateFilterData(dataZoom);
return(filterData);
}
else
{
return(m_Data.Count > 0 ? m_Data : m_RuntimeData);
}
}
/// <summary>
/// 更新dataZoom对应的类目数据列表
/// </summary>
/// <param name="dataZoom"></param>
internal void UpdateFilterData(DataZoom dataZoom)
{
if (dataZoom != null && dataZoom.enable && dataZoom.IsContainsAxis(this))
{
var data = GetDataList();
var range = Mathf.RoundToInt(data.Count * (dataZoom.end - dataZoom.start) / 100);
if (range <= 0)
{
range = 1;
}
int start = 0, end = 0;
if (dataZoom.runtimeInvert)
{
end = Mathf.CeilToInt(data.Count * dataZoom.end / 100);
start = end - range;
if (start < 0)
{
start = 0;
}
}
else
{
start = Mathf.FloorToInt(data.Count * dataZoom.start / 100);
end = start + range;
if (end > data.Count)
{
end = data.Count;
}
}
if (start != filterStart || end != filterEnd || dataZoom.minShowNum != filterMinShow || m_NeedUpdateFilterData)
{
filterStart = start;
filterEnd = end;
filterMinShow = dataZoom.minShowNum;
m_NeedUpdateFilterData = false;
if (data.Count > 0)
{
if (range < dataZoom.minShowNum)
{
if (dataZoom.minShowNum > data.Count)
{
range = data.Count;
}
else
{
range = dataZoom.minShowNum;
}
}
filterData = data.GetRange(start, range);
}
else
{
filterData = data;
}
}
else if (end == 0)
{
filterData = emptyFliter;
}
}
}