ClemensFischer/XAML-Map-Control
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XDocument.LoadRootElementAsync

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ClemensFischer 2025-09-19 11:53:25 +02:00
parent fedf5eba12
commit cd40a627ce
6 changed files with 53 additions and 42 deletions
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38
MapControl/Shared/WmtsCapabilities.cs
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@ -1,6 +1,7 @@
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Xml.Linq;
@ -25,25 +26,30 @@ namespace MapControl
public string UrlTemplate { get; private set; }
public List<WmtsTileMatrixSet> TileMatrixSets { get; private set; }
public static async Task<WmtsCapabilities> ReadCapabilitiesAsync(Uri capabilitiesUri, string layer)
public static async Task<WmtsCapabilities> ReadCapabilitiesAsync(Uri uri, string layer)
{
WmtsCapabilities capabilities;
Stream xmlStream;
string defaultUrl = null;
if (capabilitiesUri.IsAbsoluteUri && (capabilitiesUri.Scheme == "http" || capabilitiesUri.Scheme == "https"))
if (uri.IsAbsoluteUri && (uri.Scheme == "http" || uri.Scheme == "https"))
{
using var stream = await ImageLoader.HttpClient.GetStreamAsync(capabilitiesUri);
defaultUrl = uri.OriginalString.Split('?')[0];
capabilities = ReadCapabilities(XDocument.Load(stream).Root, layer, capabilitiesUri.ToString());
xmlStream = await ImageLoader.HttpClient.GetStreamAsync(uri);
}
else
{
capabilities = ReadCapabilities(XDocument.Load(capabilitiesUri.ToString()).Root, layer, null);
xmlStream = File.OpenRead(uri.IsAbsoluteUri ? uri.LocalPath : uri.OriginalString);
}
return capabilities;
using var stream = xmlStream;
var element = await XDocument.LoadRootElementAsync(stream);
return ReadCapabilities(element, layer, defaultUrl);
}
public static WmtsCapabilities ReadCapabilities(XElement capabilitiesElement, string layer, string capabilitiesUrl)
public static WmtsCapabilities ReadCapabilities(XElement capabilitiesElement, string layer, string defaultUrl)
{
var contentsElement = capabilitiesElement.Element(wmts + "Contents") ??
throw new ArgumentException("Contents element not found.");
@ -84,7 +90,7 @@ namespace MapControl
var style = styleElement?.Element(ows + "Identifier")?.Value ?? "";
var urlTemplate = ReadUrlTemplate(capabilitiesElement, layerElement, layer, style, capabilitiesUrl);
var urlTemplate = ReadUrlTemplate(capabilitiesElement, layerElement, layer, style, defaultUrl);
var tileMatrixSetIds = layerElement
.Elements(wmts + "TileMatrixSetLink")
@ -111,7 +117,7 @@ namespace MapControl
};
}
public static string ReadUrlTemplate(XElement capabilitiesElement, XElement layerElement, string layer, string style, string capabilitiesUrl)
public static string ReadUrlTemplate(XElement capabilitiesElement, XElement layerElement, string layer, string style, string defaultUrl)
{
const string formatPng = "image/png";
const string formatJpg = "image/jpeg";
@ -148,14 +154,8 @@ namespace MapControl
.Select(g => g.Attribute(xlink + "href")?.Value)
.Where(h => !string.IsNullOrEmpty(h))
.Select(h => h.Split('?')[0])
.FirstOrDefault();
if (urlTemplate == null &&
capabilitiesUrl != null &&
capabilitiesUrl.IndexOf("Request=GetCapabilities", StringComparison.OrdinalIgnoreCase) >= 0)
{
urlTemplate = capabilitiesUrl.Split('?')[0];
}
.FirstOrDefault() ??
defaultUrl;
if (urlTemplate != null)
{
@ -254,7 +254,7 @@ namespace MapControl
string[] topLeftCornerStrings;
if (string.IsNullOrEmpty(valueString) ||
(topLeftCornerStrings = valueString.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)).Length < 2 ||
(topLeftCornerStrings = valueString.Split([' '], StringSplitOptions.RemoveEmptyEntries)).Length < 2 ||
!double.TryParse(topLeftCornerStrings[0], NumberStyles.Float, CultureInfo.InvariantCulture, out double left) ||
!double.TryParse(topLeftCornerStrings[1], NumberStyles.Float, CultureInfo.InvariantCulture, out double top))
{