ClemensFischer/XAML-Map-Control
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Version 4.15.1: Use XDocument instead of XmlDocument

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ClemensF 2019-11-08 17:26:27 +01:00
parent 9e4c46dbef
commit 1ee86379c4
2 changed files with 46 additions and 55 deletions
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82
MapControl/Shared/BingMapsTileLayer.cs
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@ -7,7 +7,6 @@ using System.Diagnostics;
using System.Globalization;
using System.Linq;
using System.Xml.Linq;
using System.Threading.Tasks;
#if WINDOWS_UWP
using Windows.UI.Xaml;
#else
@ -23,8 +22,6 @@ namespace MapControl
/// </summary>
public class BingMapsTileLayer : MapTileLayer
{
private static readonly XNamespace imageryMetadataNamespace = "http://schemas.microsoft.com/search/local/ws/rest/v1";
public enum MapMode
{
Road, Aerial, AerialWithLabels
@ -59,67 +56,60 @@ namespace MapControl
return;
}
var uri = "http://dev.virtualearth.net/REST/V1/Imagery/Metadata/" + Mode + "?output=xml&key=" + ApiKey;
var metadataUri = $"http://dev.virtualearth.net/REST/V1/Imagery/Metadata/{Mode}?output=xml&key={ApiKey}";
try
{
var document = await Task.Run(() => XDocument.Load(uri));
var imageryMetadata = document.Descendants(imageryMetadataNamespace + "ImageryMetadata").FirstOrDefault();
var brandLogoUri = document.Descendants(imageryMetadataNamespace + "BrandLogoUri").FirstOrDefault();
var stream = await ImageLoader.HttpClient.GetStreamAsync(metadataUri);
if (imageryMetadata != null)
{
ReadImageryMetadata(imageryMetadata);
}
if (brandLogoUri != null)
{
LogoImageUri = new Uri(brandLogoUri.Value);
}
ProcessImageryMetadata(XDocument.Load(stream).Root);
}
catch (Exception ex)
{
Debug.WriteLine("BingMapsTileLayer: {0}: {1}", uri, ex.Message);
Debug.WriteLine("BingMapsTileLayer: {0}: {1}", metadataUri, ex.Message);
}
}
private void ReadImageryMetadata(XElement imageryMetadata)
private void ProcessImageryMetadata(XElement metadataResponse)
{
var imageUrl = imageryMetadata.Element(imageryMetadataNamespace + "ImageUrl")?.Value;
var imageUrlSubdomains = imageryMetadata.Element(imageryMetadataNamespace + "ImageUrlSubdomains")?
.Elements()
.Where(e => e.Name.LocalName == "string")
.Select(e => e.Value)
.ToArray();
var ns = metadataResponse.Name.Namespace;
var metadata = metadataResponse.Descendants(ns + "ImageryMetadata").FirstOrDefault();
if (!string.IsNullOrEmpty(imageUrl) &&
imageUrlSubdomains != null &&
imageUrlSubdomains.Length > 0)
if (metadata != null)
{
var zoomMin = imageryMetadata.Element(imageryMetadataNamespace + "ZoomMin")?.Value;
var zoomMax = imageryMetadata.Element(imageryMetadataNamespace + "ZoomMax")?.Value;
int zoomLevel;
var imageUrl = metadata.Element(ns + "ImageUrl")?.Value;
var subdomains = metadata.Element(ns + "ImageUrlSubdomains")?.Elements(ns + "string").Select(e => e.Value).ToArray();
if (!string.IsNullOrEmpty(zoomMin) &&
int.TryParse(zoomMin, out zoomLevel) &&
MinZoomLevel < zoomLevel)
if (!string.IsNullOrEmpty(imageUrl) && subdomains != null && subdomains.Length > 0)
{
MinZoomLevel = zoomLevel;
}
var zoomMin = metadata.Element(ns + "ZoomMin")?.Value;
var zoomMax = metadata.Element(ns + "ZoomMax")?.Value;
int zoomLevel;
if (!string.IsNullOrEmpty(zoomMax) &&
int.TryParse(zoomMax, out zoomLevel) &&
MaxZoomLevel > zoomLevel)
{
MaxZoomLevel = zoomLevel;
}
if (zoomMin != null && int.TryParse(zoomMin, out zoomLevel) && MinZoomLevel < zoomLevel)
{
MinZoomLevel = zoomLevel;
}
if (string.IsNullOrEmpty(Culture))
{
Culture = CultureInfo.CurrentUICulture.Name;
}
if (zoomMax != null && int.TryParse(zoomMax, out zoomLevel) && MaxZoomLevel > zoomLevel)
{
MaxZoomLevel = zoomLevel;
}
TileSource = new BingMapsTileSource(imageUrl.Replace("{culture}", Culture), imageUrlSubdomains);
if (string.IsNullOrEmpty(Culture))
{
Culture = CultureInfo.CurrentUICulture.Name;
}
TileSource = new BingMapsTileSource(imageUrl.Replace("{culture}", Culture), subdomains);
}
}
var logoUri = metadataResponse.Element(ns + "BrandLogoUri");
if (logoUri != null)
{
LogoImageUri = new Uri(logoUri.Value);
}
}
}