/// <summary>
/// Add a node to the layer tree
/// </summary>
/// <param name="nodes">The collection of the tree nodes to which the node should be added</param>
/// <param name="layerDesc">The XML data for the layer node</param>
private void AddLayerNode(TreeNodeCollection nodes, XmlNode layerDesc)
{
var layerNode = new TreeNodeView(layerDesc);
nodes.Add(layerNode);
// add sublayers (if any)
foreach (XmlNode node in layerNode.ViewModel.LayerNodes)
{
AddLayerNode(layerNode.Nodes, node);
}
}
/// <summary>
/// Get the property of the layer in the hierarchy
/// </summary>
/// <param name="node">The tree node that represents the layer</param>
/// <param name="prop">The property name</param>
/// <param name="inherit">The type of the inheritance (see WMS specification)</param>
/// <returns></returns>
private List <XmlNode> GetLayerProp(TreeNodeView node, string xpath, LayerInheritConstants inherit)
{
XmlNode layerDesc = (XmlNode)node.Tag;
XmlNodeList propNodes = layerDesc.SelectNodes(xpath);
List <XmlNode> retNodes = new List <XmlNode>();
foreach (XmlNode n in propNodes)
{
retNodes.Add(n);
}
if (inherit != LayerInheritConstants.No && node.Parent != null)
{
// trying to find the property from the parent layer
if (propNodes.Count == 0 || inherit == LayerInheritConstants.Add)
{
retNodes.AddRange(GetLayerProp((TreeNodeView)node.Parent, xpath, inherit));
}
}
return(retNodes);
}
private void GetLayerAttributes(TreeNodeView node)
{
XmlNode minx = null;
XmlNode miny = null;
XmlNode maxx = null;
XmlNode maxy = null;
NumberFormatInfo ni = new NumberFormatInfo();
ni.NumberDecimalSeparator = ".";
// minscale - maxscale
List <XmlNode> props = GetLayerProp(node, "MaxScaleDenominator", LayerInheritConstants.Replace);
if (props.Count > 0)
{
wms_maxscaledenom = Convert.ToDouble(props[0].InnerText, ni);
}
props = GetLayerProp(node, "MinScaleDenominator", LayerInheritConstants.Replace);
if (props.Count > 0)
{
wms_minscaledenom = Convert.ToDouble(props[0].InnerText, ni);
}
// Title
props = GetLayerProp(node, "Title", LayerInheritConstants.No);
if (props.Count > 0)
{
wms_title = props[0].InnerText.Trim();
}
// Name
props = GetLayerProp(node, "Name", LayerInheritConstants.No);
if (props.Count > 0)
{
if (wms_name == "")
{
wms_name = props[0].InnerText.Trim();
}
else
{
wms_name += "," + props[0].InnerText.Trim();
}
}
// queryable
XmlAttribute att = ((XmlNode)node.Tag).Attributes["queryable"];
if (att != null && att.Value.Trim() == "1")
{
wms_queryable = "1";
}
// bbox
props = GetLayerProp(node, "BoundingBox|EX_GeographicBoundingBox|LatLonBoundingBox", LayerInheritConstants.Replace);
if (props.Count > 0)
{
if (props[0].Name == "BoundingBox" || props[0].Name == "LatLonBoundingBox")
{
minx = props[0].Attributes["minx"];
miny = props[0].Attributes["miny"];
maxx = props[0].Attributes["maxx"];
maxy = props[0].Attributes["maxy"];
}
else
{
minx = props[0].SelectSingleNode("westBoundLongitude");
miny = props[0].SelectSingleNode("southBoundLatitude");
maxx = props[0].SelectSingleNode("eastBoundLongitude");
maxy = props[0].SelectSingleNode("northBoundLatitude");
}
}
if (minx != null && miny != null && maxx != null && maxy != null)
{
double fminx = Convert.ToDouble(minx.InnerText, ni);
double fminy = Convert.ToDouble(miny.InnerText, ni);
double fmaxx = Convert.ToDouble(maxx.InnerText, ni);
double fmaxy = Convert.ToDouble(maxy.InnerText, ni);
if (wms_bbox == null)
{
wms_bbox = new rectObj(fminx, fminy, fmaxx, fmaxy, 0);
}
else
{
if (wms_bbox.minx > fminx)
{
wms_bbox.minx = fminx;
}
if (wms_bbox.miny > fminy)
{
wms_bbox.miny = fminy;
}
if (wms_bbox.maxx < fmaxx)
{
wms_bbox.maxx = fmaxx;
}
if (wms_bbox.maxy < fmaxy)
{
wms_bbox.maxy = fmaxy;
}
}
}
}
