/// <summary>
/// Retrieves the map with the given request and writes the image bytes to the given target stream.
/// </summary>
/// <param name="request"></param>
/// <param name="targetStream"></param>
/// <returns>number of bytes written to the target stream</returns>
public int GetMapToStream(StaticMapRequest mapOptions, System.IO.Stream outputStream)
{
Uri requestUri = new Uri(BaseUri, mapOptions.ToUri());
GoogleSigned signingInstance = GoogleSigned.SigningInstance;
if (signingInstance != null)
{
requestUri = new Uri(signingInstance.GetSignedUri(requestUri));
}
int totalBytes = 0;
WebRequest request = WebRequest.Create(requestUri);
using (WebResponse response = request.GetResponse())
{
Stream inputStream = response.GetResponseStream();
int bytesRead = 0;
const int BYTE_BUFFER_LENGTH = 4096;
byte[] buffer = new byte[BYTE_BUFFER_LENGTH];
do
{
bytesRead = inputStream.Read(buffer, 0, BYTE_BUFFER_LENGTH);
outputStream.Write(buffer, 0, bytesRead);
totalBytes += bytesRead;
}while(bytesRead > 0);
}
return(totalBytes);
}
Uri SignUri(Uri uri)
{
if (signingSvc == null)
{
return(uri);
}
return(new Uri(signingSvc.GetSignedUri(uri)));
}
/// <summary>
/// Gets a Uri with a signature calculated.
/// See https://developers.google.com/maps/documentation/maps-static/get-api-key
/// for more info.
/// </summary>
/// <param name="signingInfo"></param>
/// <returns></returns>
public string ToUriSigned(GoogleSigned signingInfo = null)
{
if (signingInfo == null)
{
signingInfo = GoogleSigned.SigningInstance;
}
Uri reqUri = this.ToUri();
return(signingInfo.GetSignedUri(reqUri));
}
protected virtual StreamReader GetStreamReader(Uri uri, GoogleSigned signingInstance)
{
if (signingInstance != null)
{
uri = new Uri(signingInstance.GetSignedUri(uri));
}
WebResponse response = WebRequest.Create(uri).GetResponse();
StreamReader sr = new StreamReader(response.GetResponseStream());
return(sr);
}