private void AggregateChildren(SvgAElement aElement, WpfDrawingContext context, float opacity)
{
_isAggregated = false;
if (aElement == null || aElement.ChildNodes == null)
{
return;
}
string aggregatedFill = aElement.GetAttribute("fill");
bool isFillFound = !String.IsNullOrEmpty(aggregatedFill);
SvgStyleableElement paintElement = null;
if (isFillFound)
{
paintElement = aElement;
}
XmlNode targetNode = aElement;
// Check if the children of the link are wrapped in a Group Element...
if (aElement.ChildNodes.Count == 1)
{
SvgGElement groupElement = aElement.ChildNodes[0] as SvgGElement;
if (groupElement != null)
{
targetNode = groupElement;
}
}
WpfDrawingSettings settings = context.Settings;
GeometryCollection geomColl = new GeometryCollection();
foreach (XmlNode node in targetNode.ChildNodes)
{
if (node.NodeType != XmlNodeType.Element)
{
continue;
}
// Handle a case where the clip element has "use" element as a child...
if (String.Equals(node.LocalName, "use"))
{
SvgUseElement useElement = (SvgUseElement)node;
XmlElement refEl = useElement.ReferencedElement;
if (refEl != null)
{
XmlElement refElParent = (XmlElement)refEl.ParentNode;
useElement.OwnerDocument.Static = true;
useElement.CopyToReferencedElement(refEl);
refElParent.RemoveChild(refEl);
useElement.AppendChild(refEl);
foreach (XmlNode useChild in useElement.ChildNodes)
{
if (useChild.NodeType != XmlNodeType.Element)
{
continue;
}
SvgStyleableElement element = useChild as SvgStyleableElement;
if (element != null && element.RenderingHint == SvgRenderingHint.Shape)
{
Geometry childPath = WpfRendering.CreateGeometry(element,
settings.OptimizePath);
if (childPath != null)
{
if (isFillFound)
{
string elementFill = element.GetAttribute("fill");
if (!String.IsNullOrEmpty(elementFill) &&
!String.Equals(elementFill, aggregatedFill, StringComparison.OrdinalIgnoreCase))
{
return;
}
}
else
{
aggregatedFill = element.GetAttribute("fill");
isFillFound = !String.IsNullOrEmpty(aggregatedFill);
if (isFillFound)
{
paintElement = element;
}
}
geomColl.Add(childPath);
}
}
}
useElement.RemoveChild(refEl);
useElement.RestoreReferencedElement(refEl);
refElParent.AppendChild(refEl);
useElement.OwnerDocument.Static = false;
}
}
//else if (String.Equals(node.LocalName, "g"))
//{
//}
else
{
SvgStyleableElement element = node as SvgStyleableElement;
if (element != null && element.RenderingHint == SvgRenderingHint.Shape)
{
Geometry childPath = WpfRendering.CreateGeometry(element,
settings.OptimizePath);
if (childPath != null)
{
if (isFillFound)
{
string elementFill = element.GetAttribute("fill");
if (!String.IsNullOrEmpty(elementFill) &&
!String.Equals(elementFill, aggregatedFill, StringComparison.OrdinalIgnoreCase))
{
return;
}
}
else
{
aggregatedFill = element.GetAttribute("fill");
isFillFound = !String.IsNullOrEmpty(aggregatedFill);
if (isFillFound)
{
paintElement = element;
}
}
geomColl.Add(childPath);
}
}
}
}
if (geomColl.Count == 0 || paintElement == null)
{
return;
}
_aggregatedFill = paintElement;
_aggregatedGeom = geomColl;
_isAggregated = true;
}
public override void Visit(DrawingGroup group, SvgAElement element,
WpfDrawingContext context, float opacity)
{
_isAggregated = false;
if (group == null || element == null || context == null)
{
return;
}
AddExtraLinkInformation(group, element);
//string linkId = element.GetAttribute("id");
string linkId = GetElementName(element);
if (String.IsNullOrEmpty(linkId))
{
return;
}
SvgLink.SetKey(group, linkId);
if (_dicLinks.ContainsKey(linkId))
{
_isAggregated = _dicLinks[linkId];
return;
}
string linkAction = element.GetAttribute("onclick");
if (String.IsNullOrEmpty(linkAction))
{
linkAction = element.GetAttribute("onmouseover");
if (!String.IsNullOrEmpty(linkAction) &&
linkAction.StartsWith("parent.svgMouseOverName", StringComparison.OrdinalIgnoreCase))
{
SvgLink.SetAction(group, SvgLinkAction.LinkTooltip);
}
else
{
SvgLink.SetAction(group, SvgLinkAction.LinkNone);
}
}
else
{
if (linkAction.StartsWith("parent.svgClick", StringComparison.OrdinalIgnoreCase))
{
SvgLink.SetAction(group, SvgLinkAction.LinkPage);
}
else if (linkAction.StartsWith("parent.svgOpenHtml", StringComparison.OrdinalIgnoreCase))
{
SvgLink.SetAction(group, SvgLinkAction.LinkHtml);
}
else
{
SvgLink.SetAction(group, SvgLinkAction.LinkNone);
}
}
if (!String.IsNullOrEmpty(linkAction))
{
if (linkAction.IndexOf("'Top'") > 0)
{
SvgLink.SetLocation(group, "Top");
}
else if (linkAction.IndexOf("'Bottom'") > 0)
{
SvgLink.SetLocation(group, "Bottom");
}
else
{
SvgLink.SetLocation(group, "Top");
}
}
this.AggregateChildren(element, context, opacity);
if (_isAggregated)
{
Geometry drawGeometry = null;
if (_aggregatedGeom.Count == 1)
{
drawGeometry = _aggregatedGeom[0];
}
else
{
GeometryGroup geomGroup = new GeometryGroup();
geomGroup.FillRule = FillRule.Nonzero;
for (int i = 0; i < _aggregatedGeom.Count; i++)
{
geomGroup.Children.Add(_aggregatedGeom[i]);
}
drawGeometry = geomGroup;
}
WpfSvgPaint fillPaint = new WpfSvgPaint(context, _aggregatedFill, "fill");
Brush brush = fillPaint.GetBrush(false);
brush.SetValue(FrameworkElement.NameProperty, linkId + "_Brush");
GeometryDrawing drawing = new GeometryDrawing(brush, null, drawGeometry);
group.Children.Add(drawing);
}
_dicLinks.Add(linkId, _isAggregated);
}
