protected virtual void wmsService_OnGetFeatureInfoCompleted(object sender, DownloadStringCompletedEventArgs e)
{
GisShapeCollection features = new GisShapeCollection();
try
{
if (e.Result == "") return;
Extent extent;
features = GmlReader.GetShapes(e.Result, out extent);
}
finally
{
RaiseGetFeatureInfoCompleted(features);
}
}
protected void RaiseGetFeatureInfoCompleted(GisShapeCollection features)
{
if (OnGetFeatureInfoCompleted != null)
OnGetFeatureInfoCompleted(this, new FeaturesEventArgs(features));
}
/// <summary>
/// Creates a new instance of the <see cref="SelectionsEventArgs"/>
/// </summary>
/// <param name="features">List of entities.</param>
public FeaturesEventArgs(GisShapeCollection features)
{
_features = features;
}
/// <summary>
/// Returns a list of shapes contained in the passed GML string
/// </summary>
/// <param name="gml">GML string</param>
/// <param name="layer">Layer where to load features</param>
/// <param name="extent">extent of the shapes</param>
/// <returns>List of shapes</returns>
public static GisShapeCollection GetShapes(string gml, LayerVector layer, out Extent extent)
{
var res = new GisShapeCollection();
res.Name = layer.Name;
var slayer = new List<string>();
foreach (LayerField t in layer.Fields)
{
slayer.Add(t.Name);
}
var provider = new SharpMap.GmlUtils.GmlProvider(gml, slayer);
if (provider.Shapes == null)
{
extent = new Extent(provider.Extent.MinX,provider.Extent.MinY,provider.Extent.MaxX,provider.Extent.MaxY);
return res;
}
for (int i = 0; i < provider.Shapes.Count; i++)
{
var shpOrig = provider.Shapes[i];
GisShapeBase shpDest = layer.CreateShape();
if (shpDest is GisShapePoint)
{
(shpDest as GisShapePoint).Point.X = (shpOrig.Geometry as Point).X;
(shpDest as GisShapePoint).Point.Y = (shpOrig.Geometry as Point).Y;
}
else if (shpDest is GisShapeArc)
{
for (int j=0; j<(shpOrig.Geometry as LineString).Coordinates.Length; j++)
{
var p = new GisPoint();
p.X = (shpOrig.Geometry as LineString).Coordinates[j].X;
p.Y = (shpOrig.Geometry as LineString).Coordinates[j].Y;
(shpDest as GisShapeArc).Points.Add(p);
}
}
else if (shpDest is GisShapeMultiPoint)
{
for (int j = 0; j < (shpOrig.Geometry as MultiPoint).Geometries.Length; j++)
{
var p = new GisPoint();
p.X = ((shpOrig.Geometry as MultiPoint).Geometries[j] as IPoint).X;
p.Y = ((shpOrig.Geometry as MultiPoint).Geometries[j] as IPoint).Y;
(shpDest as GisShapeMultiPoint).Points.Add(p);
}
}
else if (shpDest is GisShapePolygon)
{
for (int j = 0; j < (shpOrig.Geometry as Polygon).ExteriorRing.Coordinates.Length; j++)
{
var p = new GisPoint();
p.X = (shpOrig.Geometry as Polygon).ExteriorRing.Coordinates[j].X;
p.Y = (shpOrig.Geometry as Polygon).ExteriorRing.Coordinates[j].Y;
(shpDest as GisShapePolygon).Points.Add(p);
}
}
shpDest.UID = shpOrig.UID;
shpDest.IsSelected = shpOrig.IsSelected;
IEnumerable<string> keys = shpOrig.Keys;
foreach(string key in keys)
{
shpDest[key] = shpOrig[key];
}
if (shpDest != null)
res.Add(shpDest);
}
if (provider.Extent != null)
extent = new Extent(provider.Extent.MinX, provider.Extent.MinY, provider.Extent.MaxX, provider.Extent.MaxY);
else
extent = new Extent();
return res;
}
/// <summary>
/// Returns a list of features contained in the passed GML string
/// </summary>
/// <param name="gml">GML string</param>
/// <param name="extent">extent of the shapes</param>
/// <returns>List of features</returns>
/// <remarks>Because the layer is not passed, all fields are treated as strings</remarks>
public static GisShapeCollection GetShapes(string gml, out Extent extent)
{
var res = new GisShapeCollection();
res.Name = "";
var provider = new SharpMap.GmlUtils.GmlProvider(gml);
if (provider.Shapes == null)
{
extent = new Extent(provider.Extent.MinX, provider.Extent.MinY, provider.Extent.MaxX, provider.Extent.MaxY);
return res;
}
for (int i = 0; i < provider.Shapes.Count; i++)
{
var shpOrig = provider.Shapes[i];
GisShapeBase shpDest = null;
if (shpOrig.Geometry is IPoint)
{
shpDest = CreateShape(GisShapeType.GisShapeTypePoint);
(shpDest as GisShapePoint).Point.X = (shpOrig.Geometry as Point).X;
(shpDest as GisShapePoint).Point.Y = (shpOrig.Geometry as Point).Y;
}
else if (shpOrig.Geometry is ILineString)
{
shpDest = CreateShape(GisShapeType.GisShapeTypeArc);
for (int j = 0; j < (shpOrig.Geometry as LineString).Coordinates.Length; j++)
{
var p = new GisPoint();
p.X = (shpOrig.Geometry as LineString).Coordinates[j].X;
p.Y = (shpOrig.Geometry as LineString).Coordinates[j].Y;
(shpDest as GisShapeArc).Points.Add(p);
}
}
else if (shpOrig.Geometry is IMultiPoint)
{
shpDest = CreateShape(GisShapeType.GisShapeTypeMultiPoint);
for (int j = 0; j < (shpOrig.Geometry as MultiPoint).Geometries.Length; j++)
{
var p = new GisPoint();
p.X = ((shpOrig.Geometry as MultiPoint).Geometries[j] as IPoint).X;
p.Y = ((shpOrig.Geometry as MultiPoint).Geometries[j] as IPoint).Y;
(shpDest as GisShapeMultiPoint).Points.Add(p);
}
}
else if (shpOrig.Geometry is IPolygon)
{
shpDest = CreateShape(GisShapeType.GisShapeTypePolygon);
for (int j = 0; j < (shpOrig.Geometry as Polygon).ExteriorRing.Coordinates.Length; j++)
{
var p = new GisPoint();
p.X = (shpOrig.Geometry as Polygon).ExteriorRing.Coordinates[j].X;
p.Y = (shpOrig.Geometry as Polygon).ExteriorRing.Coordinates[j].Y;
(shpDest as GisShapePolygon).Points.Add(p);
}
}
shpDest.UID = shpOrig.UID;
shpDest.IsSelected = shpOrig.IsSelected;
var keys = shpOrig.Keys;
shpDest.PopulateTypes(keys);
foreach (string key in keys)
{
shpDest[key] = shpOrig[key];
}
if (shpDest != null)
res.Add(shpDest);
}
if (provider.Extent != null)
extent = new Extent(provider.Extent.MinX, provider.Extent.MinY, provider.Extent.MaxX, provider.Extent.MaxY);
else
extent = new Extent();
return res;
}
void GetFeaturesCompleted(object sender, DownloadStringCompletedEventArgs e)
{
GisShapeCollection features = new GisShapeCollection();
try
{
XDocument doc;
var settings = new XmlReaderSettings();
settings.DtdProcessing = DtdProcessing.Ignore;
using (XmlReader reader = XmlReader.Create(new StringReader(e.Result), settings))
{
doc = XDocument.Load(reader);
}
var docRoot = doc.Element("rss");
if (docRoot == null) return;
var xchannel = docRoot.Element("channel");
if (xchannel == null) return;
Title = xchannel.Element("title") != null ? xchannel.Element("title").Value : "";
Link = xchannel.Element("link") != null ? xchannel.Element("link").Value : "";
Description = xchannel.Element("description") != null ? xchannel.Element("description").Value : "";
Author = xchannel.Element("author") != null ? xchannel.Element("author").Value : "";
Updated = xchannel.Element("updated") != null ? Parser.StringAsDateTime(xchannel.Element("updated").Value) : DateTime.MinValue;
var ximage = xchannel.Element("image");
if (ximage != null)
{
ImageUrl = ximage.Element("url") != null ? ximage.Element("url").Value : "";
ImageLink = ximage.Element("link") != null ? ximage.Element("link").Value : "";
ImageTitle = ximage.Element("title") != null ? ximage.Element("title").Value : "";
ImageHeight = ximage.Element("height") != null ? Parser.StringAsInteger(ximage.Element("height").Value, 0) : 0;
ImageWidth = ximage.Element("width") != null ? Parser.StringAsInteger(ximage.Element("width").Value, 0) : 0;
}
var xitems = xchannel.Descendants("item");
if (xitems == null) return;
foreach (XElement xitem in xitems)
{
GisShapePoint p = new GisShapePoint(null);
var keys = new Collection<string>();
keys.Add("magnitudo");
keys.Add("date");
keys.Add("link");
keys.Add("depth");
keys.Add("title");
keys.Add("description");
p.PopulateTypes(keys);
string title = xitem.Element("title") != null ? xitem.Element("title").Value : "";
p["title"] = title;
string link = xitem.Element("link") != null ? xitem.Element("link").Value : "";
p["link"] = link;
string description = xitem.Element("description") != null ? xitem.Element("description").Value : "";
p["description"] = description;
/*Esempio description: <a href='http://cnt.rm.ingv.it/data_id/7232002670/event.html'><img width='225' height='225' border='0' src='http://cnt.rm.ingv.it/data_id/7232002670/map_loc_t.jpg' alt='epicentro evento' align='left' /></a><p style='color: #333333;font: 14;line-height: 28'> ID: 7232002670<br /> Data: 10/02/2014 07.07.40<br /> Magnitudo: 2.0<br /> Distretto: France<br /> Lat: 45.336 - Lon: 6.543<br /> Profondità: 10.0 km</p> */
if ((description.Contains("Lon: ")) && (description.Contains("Lat: ")))
{
int indexId0 = description.IndexOf(@"http://cnt.rm.ingv.it/data_id/");
int indexId1 = description.IndexOf(@"/event", indexId0);
String sid = description.Substring(indexId0 + 30, indexId1 - indexId0 - 30);
Int64 id;
Int64.TryParse(sid, out id);
p.UID = id;
int indexLon0 = description.IndexOf("Lon: ");
int indexLon1 = description.IndexOf("<br", indexLon0);
String sLon = description.Substring(indexLon0 + 10, indexLon1-indexLon0 - 10);
int indexLat0 = description.IndexOf("Lat: ");
int indexLat1 = description.IndexOf(" -", indexLat0);
String sLat = description.Substring(indexLat0 + 10, indexLat1-indexLat0-10);
p.Point.Y = Parser.StringAsDouble(sLat, -1);
p.Point.X = Parser.StringAsDouble(sLon, -1);
int indexMagnitudo0 = description.IndexOf("Magnitudo: ");
int indexMagnitudo1 = description.IndexOf("<br", indexMagnitudo0);
String magnitudo = description.Substring(indexMagnitudo0 + 16, indexMagnitudo1-indexMagnitudo0-16);
p["magnitudo"] = magnitudo;
int indexData0 = description.IndexOf("Data: ");
int indexData1 = description.IndexOf("<br", indexData0);
String date = description.Substring(indexData0 + 11, indexData1 -indexData0 -11);
p["date"] = date;
}
features.Add(p);
}
}
catch (Exception ex)
{
throw;
}
finally
{
BusyState = false;
if (OnGetFeaturesCompleted != null)
OnGetFeaturesCompleted(sender, new FeaturesEventArgs(features));
}
}
protected LayerVector()
{
Fields = new LayerFields();
Items = new GisShapeCollection();
}
