private void LoadAxis()
{
XmlNodeList nl = _chartNode.SelectNodes("c:axId", NameSpaceManager);
List<ExcelChartAxis> l = new List<ExcelChartAxis>();
foreach (XmlNode node in nl)
{
string id = node.Attributes["val"].Value;
var axNode = ChartXml.SelectNodes(rootPath + string.Format("/*/c:axId[@val=\"{0}\"]", id), NameSpaceManager);
if (axNode != null && axNode.Count>1)
{
foreach (XmlNode axn in axNode)
{
if (axn.ParentNode.LocalName.EndsWith("Ax"))
{
XmlNode axisNode = axNode[1].ParentNode;
ExcelChartAxis ax = new ExcelChartAxis(NameSpaceManager, axisNode);
l.Add(ax);
}
}
}
}
_axis = l.ToArray();
if(_axis.Length > 0) XAxis = _axis[0];
if (_axis.Length > 1) YAxis = _axis[1];
}
///// <summary>
///// Sets position of the axis of a chart-serie
///// </summary>
///// <param name="XAxis">Left or Right</param>
///// <param name="YAxis">Top or Bottom</param>
//internal void SetAxis(eXAxisPosition XAxis, eYAxisPosition YAxis)
//{
// bool xAxisExists = false, yAxisExists = false;
// foreach (var axis in _axis)
// {
// if (axis.AxisPosition == (eAxisPosition)XAxis)
// {
// //Found
// xAxisExists=true;
// if (axis != this.XAxis)
// {
// CheckRemoveAxis(this.XAxis);
// this.XAxis = axis;
// }
// }
// else if (axis.AxisPosition == (eAxisPosition)YAxis)
// {
// yAxisExists = true;
// if (axis != this.YAxis)
// {
// CheckRemoveAxis(this.YAxis);
// this.YAxis = axis;
// }
// }
// }
// if (!xAxisExists)
// {
// if (ExistsAxis(this.XAxis))
// {
// AddAxis((eAxisPosition)XAxis);
// this.XAxis = Axis[Axis.Length - 1];
// }
// else
// {
// this.XAxis.AxisPosition = (eAxisPosition)XAxis;
// }
// }
// if (!yAxisExists)
// {
// if (ExistsAxis(this.XAxis))
// {
// AddAxis((eAxisPosition)YAxis);
// this.YAxis = Axis[Axis.Length - 1];
// }
// else
// {
// this.YAxis.AxisPosition = (eAxisPosition)YAxis;
// }
// }
//}
/// <summary>
/// Remove all axis that are not used any more
/// </summary>
/// <param name="excelChartAxis"></param>
private void CheckRemoveAxis(ExcelChartAxis excelChartAxis)
{
if (ExistsAxis(excelChartAxis))
{
//Remove the axis
ExcelChartAxis[] newAxis = new ExcelChartAxis[Axis.Length - 1];
int pos = 0;
foreach (var ax in Axis)
{
if (ax != excelChartAxis)
{
newAxis[pos] = ax;
}
}
//Update all charttypes.
foreach (ExcelChart chartType in _plotArea.ChartTypes)
{
chartType._axis = newAxis;
}
}
}
private bool ExistsAxis(ExcelChartAxis excelChartAxis)
{
foreach (ExcelChart chartType in _plotArea.ChartTypes)
{
if (chartType != this)
{
if (chartType.XAxis.AxisPosition == excelChartAxis.AxisPosition ||
chartType.YAxis.AxisPosition == excelChartAxis.AxisPosition)
{
//The axis exists
return true;
}
}
}
return false;
}
/// <summary>
/// Add a secondary axis
/// </summary>
internal void AddAxis()
{
XmlElement catAx = ChartXml.CreateElement(string.Format("c:{0}",AddAxType()), ExcelPackage.schemaChart);
int axID;
if (_axis.Length == 0)
{
_plotArea.TopNode.AppendChild(catAx);
axID = 1;
}
else
{
_axis[0].TopNode.ParentNode.InsertAfter(catAx, _axis[_axis.Length-1].TopNode);
axID = int.Parse(_axis[0].Id) < int.Parse(_axis[1].Id) ? int.Parse(_axis[1].Id) + 1 : int.Parse(_axis[0].Id) + 1;
}
XmlElement valAx = ChartXml.CreateElement("c:valAx", ExcelPackage.schemaChart);
catAx.ParentNode.InsertAfter(valAx, catAx);
if (_axis.Length == 0)
{
catAx.InnerXml = string.Format("<c:axId val=\"{0}\"/><c:scaling><c:orientation val=\"minMax\"/></c:scaling><c:delete val=\"0\" /><c:axPos val=\"b\"/><c:tickLblPos val=\"nextTo\"/><c:crossAx val=\"{1}\"/><c:crosses val=\"autoZero\"/><c:auto val=\"1\"/><c:lblAlgn val=\"ctr\"/><c:lblOffset val=\"100\"/>", axID, axID + 1);
valAx.InnerXml = string.Format("<c:axId val=\"{1}\"/><c:scaling><c:orientation val=\"minMax\"/></c:scaling><c:delete val=\"0\" /><c:axPos val=\"l\"/><c:majorGridlines/><c:tickLblPos val=\"nextTo\"/><c:crossAx val=\"{0}\"/><c:crosses val=\"autoZero\"/><c:crossBetween val=\"between\"/>", axID, axID + 1);
}
else
{
catAx.InnerXml = string.Format("<c:axId val=\"{0}\"/><c:scaling><c:orientation val=\"minMax\"/></c:scaling><c:delete val=\"1\" /><c:axPos val=\"b\"/><c:tickLblPos val=\"none\"/><c:crossAx val=\"{1}\"/><c:crosses val=\"autoZero\"/>", axID, axID + 1);
valAx.InnerXml = string.Format("<c:axId val=\"{0}\"/><c:scaling><c:orientation val=\"minMax\"/></c:scaling><c:delete val=\"0\" /><c:axPos val=\"r\"/><c:tickLblPos val=\"nextTo\"/><c:crossAx val=\"{1}\"/><c:crosses val=\"max\"/><c:crossBetween val=\"between\"/>", axID + 1, axID);
}
if (_axis.Length == 0)
{
_axis = new ExcelChartAxis[2];
}
else
{
ExcelChartAxis[] newAxis = new ExcelChartAxis[_axis.Length + 2];
Array.Copy(_axis, newAxis, _axis.Length);
_axis = newAxis;
}
_axis[_axis.Length - 2] = new ExcelChartAxis(NameSpaceManager, catAx);
_axis[_axis.Length - 1] = new ExcelChartAxis(NameSpaceManager, valAx);
foreach (var chart in _plotArea.ChartTypes)
{
chart._axis = _axis;
}
}