/// <summary>
/// Creates a KmlProvider from a Kml stream
/// </summary>
/// <param name="stream">The stream to read from</param>
/// <exception cref="ArgumentNullException"></exception>
public static KmlProvider FromKml(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
var kml = new KmlProvider(KmlFile.Load(stream));
//kml.InitIds();
return(kml);
}
/// <summary>
/// Creates a KmlProvider from a Kmz stream
/// </summary>
/// <param name="stream">The stream to read from</param>
/// <param name="internalFile">The internal file to read</param>
/// <exception cref="ArgumentNullException"></exception>
public static KmlProvider FromKmz(Stream stream, string internalFile = null)
{
var kmz = KmzFile.Open(stream);
if (string.IsNullOrEmpty(internalFile))
{
var kml = new KmlProvider(kmz.GetDefaultKmlFile());
kml.kmzFile = kmz;
//kml.InitIds();
return(kml);
}
//NOTE:DON'T KNOW IF THIS IS CORRECT!
using (var ms = new MemoryStream(kmz.ReadFile(internalFile)))
{
var kml = new KmlProvider(KmlFile.Load(ms));
//kml.InitIds();
return(kml);
}
}
/// <summary>
/// Attempt to append all styles from an external kml/kmz resource <param name="url"></param> to this KmlProvider's styles
/// </summary>
/// <param name="url"></param>
private void LoadExternalStyles(Uri url)
{
try
{
var request = WebRequest.Create(url);
using (var response = request.GetResponse())
{
// not as efficient as reading the styles directly, but simplifies dealing with KML or KMZ.
// Also, external style files typically contain styles only (ie no geometries).
KmlProvider prov = null;
if (url.ToString().ToLower().EndsWith(".kml"))
{
prov = FromKml(response.GetResponseStream(), true);
}
else if (url.ToString().ToLower().EndsWith(".kmz"))
{
prov = FromKmz(response.GetResponseStream(), null, true);
}
foreach (var key in prov._kmlStyles.Keys)
{
if (!_kmlStyles.ContainsKey(key))
{
_kmlStyles.Add(key, prov._kmlStyles[key]);
}
}
foreach (var key in prov._styleMaps.Keys)
{
if (!_styleMaps.ContainsKey(key))
{
_styleMaps.Add(key, prov._styleMaps[key]);
}
}
}
}
catch (Exception ex)
{
Trace.WriteLine(ex.Message);
}
}
