internal void LoadStyleAndColorsXml(XmlDocument styleXml, eChartStyle fallBackStyle, XmlDocument colorsXml)
{
if (fallBackStyle == eChartStyle.None)
{
throw new ArgumentException("fallBackStyle", "fallBackStyle can't be None");
}
if (_chart.Style != eChartStyle.None && _chart.Style != fallBackStyle)
{
_chart.Style = fallBackStyle;
}
if (styleXml == null || styleXml.DocumentElement == null || styleXml.DocumentElement.LocalName != "chartStyle" || styleXml.DocumentElement.ChildNodes.Count != 31)
{
throw new ArgumentException("xml", "StyleXml is null or not in the correct format");
}
if (StylePart == null)
{
CreateStylePart(_chart.WorkSheet.Workbook._package.Package);
}
StyleXml = styleXml;
StyleXml.Save(StylePart.GetStream(FileMode.CreateNew));
Style = new ExcelChartStyle(NameSpaceManager, StyleXml.DocumentElement, this);
if (colorsXml == null)
{
colorsXml = new XmlDocument();
colorsXml.LoadXml(GetStartColorXml());
}
LoadColorXml(colorsXml);
_chart.InitChartTheme((int)fallBackStyle);
}
private void LoadStyleAndColors(ExcelChart chart)
{
if (chart.Part == null)
{
return;
}
var p = chart.WorkSheet.Workbook._package;
foreach (var rel in chart.Part.GetRelationships())
{
if (rel.RelationshipType == ExcelPackage.schemaChartStyleRelationships)
{
StyleUri = UriHelper.ResolvePartUri(rel.SourceUri, rel.TargetUri);
StylePart = p.Package.GetPart(StyleUri);
StyleXml = new XmlDocument();
LoadXmlSafe(StyleXml, StylePart.GetStream());
}
else if (rel.RelationshipType == ExcelPackage.schemaChartColorStyleRelationships)
{
ColorsUri = UriHelper.ResolvePartUri(rel.SourceUri, rel.TargetUri);
ColorsPart = p.Package.GetPart(ColorsUri);
ColorsXml = new XmlDocument();
LoadXmlSafe(ColorsXml, ColorsPart.GetStream());
}
}
}
/// <summary>
/// Creates an empty style and color for chart, ready to be customized
/// </summary>
public void CreateEmptyStyle(eChartStyle fallBackStyle = eChartStyle.Style2)
{
if (fallBackStyle == eChartStyle.None)
{
throw new InvalidOperationException("The chart must have a style. Please set the charts Style property to a value different than None or Call LoadStyleXml with the fallBackStyle parameter");
}
var p = _chart.WorkSheet.Workbook._package.Package;
var id = CreateStylePart(p);
StyleXml = new XmlDocument();
StyleXml.LoadXml(GetStartStyleXml(id));
StyleXml.Save(StylePart.GetStream());
Style = new ExcelChartStyle(NameSpaceManager, StyleXml.DocumentElement, this);
_chart.InitChartTheme((int)fallBackStyle);
CreateColorXml(p);
}