mirror of
https://github.com/ClemensFischer/XAML-Map-Control.git
synced 2025-12-06 07:12:04 +01:00
Improve TileMatrixSet selection in WmtsTileLayer
This commit is contained in:
ClemensFischer
parent
66e03e5334
commit
fc2425ac41
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@ -23,11 +23,11 @@ namespace MapControl
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private static readonly XNamespace wmts = "http://www.opengis.net/wmts/1.0";
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private static readonly XNamespace xlink = "http://www.w3.org/1999/xlink";
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public string LayerIdentifier { get; private set; }
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public string Layer { get; private set; }
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public WmtsTileSource TileSource { get; private set; }
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public List<WmtsTileMatrixSet> TileMatrixSets { get; private set; }
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public static async Task<WmtsCapabilities> ReadCapabilitiesAsync(Uri capabilitiesUri, string layerIdentifier)
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public static async Task<WmtsCapabilities> ReadCapabilitiesAsync(Uri capabilitiesUri, string layer)
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{
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WmtsCapabilities capabilities;
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@ -35,18 +35,18 @@ namespace MapControl
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{
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using (var stream = await ImageLoader.HttpClient.GetStreamAsync(capabilitiesUri))
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{
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capabilities = ReadCapabilities(XDocument.Load(stream).Root, layerIdentifier, capabilitiesUri.ToString());
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capabilities = ReadCapabilities(XDocument.Load(stream).Root, layer, capabilitiesUri.ToString());
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}
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}
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else
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{
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capabilities = ReadCapabilities(XDocument.Load(capabilitiesUri.ToString()).Root, layerIdentifier, null);
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capabilities = ReadCapabilities(XDocument.Load(capabilitiesUri.ToString()).Root, layer, null);
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}
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return capabilities;
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}
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public static WmtsCapabilities ReadCapabilities(XElement capabilitiesElement, string layerIdentifier, string capabilitiesUrl)
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public static WmtsCapabilities ReadCapabilities(XElement capabilitiesElement, string layer, string capabilitiesUrl)
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{
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var contentsElement = capabilitiesElement.Element(wmts + "Contents");
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@ -57,15 +57,15 @@ namespace MapControl
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XElement layerElement;
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if (!string.IsNullOrEmpty(layerIdentifier))
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if (!string.IsNullOrEmpty(layer))
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{
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layerElement = contentsElement
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.Elements(wmts + "Layer")
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.FirstOrDefault(layer => layer.Element(ows + "Identifier")?.Value == layerIdentifier);
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.FirstOrDefault(l => l.Element(ows + "Identifier")?.Value == layer);
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if (layerElement == null)
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{
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throw new ArgumentException($"Layer element \"{layerIdentifier}\" not found.");
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throw new ArgumentException($"Layer element \"{layer}\" not found.");
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}
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}
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else
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@ -79,12 +79,12 @@ namespace MapControl
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throw new ArgumentException("No Layer element found.");
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}
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layerIdentifier = layerElement.Element(ows + "Identifier")?.Value ?? "";
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layer = layerElement.Element(ows + "Identifier")?.Value ?? "";
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}
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var styleElement = layerElement
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.Elements(wmts + "Style")
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.FirstOrDefault(style => style.Attribute("isDefault")?.Value == "true");
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.FirstOrDefault(s => s.Attribute("isDefault")?.Value == "true");
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if (styleElement == null)
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{
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@ -93,19 +93,19 @@ namespace MapControl
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.FirstOrDefault();
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}
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var styleIdentifier = styleElement?.Element(ows + "Identifier")?.Value;
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var style = styleElement?.Element(ows + "Identifier")?.Value;
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if (string.IsNullOrEmpty(styleIdentifier))
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if (string.IsNullOrEmpty(style))
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{
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throw new ArgumentException($"No Style element found in Layer \"{layerIdentifier}\".");
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throw new ArgumentException($"No Style element found in Layer \"{layer}\".");
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}
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var urlTemplate = ReadUrlTemplate(capabilitiesElement, layerElement, layerIdentifier, styleIdentifier, capabilitiesUrl);
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var urlTemplate = ReadUrlTemplate(capabilitiesElement, layerElement, layer, style, capabilitiesUrl);
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var tileMatrixSetIds = layerElement
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.Elements(wmts + "TileMatrixSetLink")
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.Select(tmsl => tmsl.Element(wmts + "TileMatrixSet")?.Value)
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.Where(val => !string.IsNullOrEmpty(val));
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.Select(l => l.Element(wmts + "TileMatrixSet")?.Value)
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.Where(v => !string.IsNullOrEmpty(v));
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var tileMatrixSets = new List<WmtsTileMatrixSet>();
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@ -113,11 +113,11 @@ namespace MapControl
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{
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var tileMatrixSetElement = contentsElement
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.Elements(wmts + "TileMatrixSet")
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.FirstOrDefault(tms => tms.Element(ows + "Identifier")?.Value == tileMatrixSetId);
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.FirstOrDefault(s => s.Element(ows + "Identifier")?.Value == tileMatrixSetId);
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if (tileMatrixSetElement == null)
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{
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throw new ArgumentException($"Linked TileMatrixSet element not found in Layer \"{layerIdentifier}\".");
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throw new ArgumentException($"Linked TileMatrixSet element not found in Layer \"{layer}\".");
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}
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tileMatrixSets.Add(ReadTileMatrixSet(tileMatrixSetElement));
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@ -125,13 +125,13 @@ namespace MapControl
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return new WmtsCapabilities
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{
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LayerIdentifier = layerIdentifier,
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Layer = layer,
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TileSource = new WmtsTileSource { UriTemplate = urlTemplate },
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TileMatrixSets = tileMatrixSets
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};
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}
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public static string ReadUrlTemplate(XElement capabilitiesElement, XElement layerElement, string layerIdentifier, string styleIdentifier, string capabilitiesUrl)
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public static string ReadUrlTemplate(XElement capabilitiesElement, XElement layerElement, string layer, string style, string capabilitiesUrl)
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{
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const string formatPng = "image/png";
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const string formatJpg = "image/jpeg";
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@ -139,11 +139,11 @@ namespace MapControl
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var resourceUrls = layerElement
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.Elements(wmts + "ResourceURL")
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.Where(res => res.Attribute("resourceType")?.Value == "tile" &&
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res.Attribute("format")?.Value != null &&
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res.Attribute("template")?.Value != null)
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.ToLookup(res => res.Attribute("format").Value,
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res => res.Attribute("template").Value);
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.Where(r => r.Attribute("resourceType")?.Value == "tile" &&
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r.Attribute("format")?.Value != null &&
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r.Attribute("template")?.Value != null)
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.ToLookup(r => r.Attribute("format").Value,
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r => r.Attribute("template").Value);
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if (resourceUrls.Any())
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{
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@ -151,23 +151,23 @@ namespace MapControl
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: resourceUrls.Contains(formatJpg) ? resourceUrls[formatJpg]
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: resourceUrls.First();
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urlTemplate = urlTemplates.First().Replace("{Style}", styleIdentifier);
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urlTemplate = urlTemplates.First().Replace("{Style}", style);
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}
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else
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{
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urlTemplate = capabilitiesElement
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.Elements(ows + "OperationsMetadata")
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.Elements(ows + "Operation")
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.Where(op => op.Attribute("name")?.Value == "GetTile")
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.Where(o => o.Attribute("name")?.Value == "GetTile")
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.Elements(ows + "DCP")
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.Elements(ows + "HTTP")
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.Elements(ows + "Get")
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.Where(get => get.Elements(ows + "Constraint")
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.Any(con => con.Attribute("name")?.Value == "GetEncoding" &&
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con.Element(ows + "AllowedValues")?.Element(ows + "Value")?.Value == "KVP"))
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.Select(get => get.Attribute(xlink + "href")?.Value)
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.Where(href => !string.IsNullOrEmpty(href))
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.Select(href => href.Split('?')[0])
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.Where(g => g.Elements(ows + "Constraint")
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.Any(con => con.Attribute("name")?.Value == "GetEncoding" &&
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con.Element(ows + "AllowedValues")?.Element(ows + "Value")?.Value == "KVP"))
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.Select(g => g.Attribute(xlink + "href")?.Value)
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.Where(h => !string.IsNullOrEmpty(h))
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.Select(h => h.Split('?')[0])
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.FirstOrDefault();
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if (urlTemplate == null &&
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@ -181,7 +181,7 @@ namespace MapControl
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{
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var formats = layerElement
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.Elements(wmts + "Format")
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.Select(fmt => fmt.Value);
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.Select(f => f.Value);
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var format = formats.Contains(formatPng) ? formatPng
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: formats.Contains(formatJpg) ? formatJpg
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@ -195,8 +195,8 @@ namespace MapControl
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urlTemplate += "?Service=WMTS"
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+ "&Request=GetTile"
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+ "&Version=1.0.0"
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+ "&Layer=" + layerIdentifier
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+ "&Style=" + styleIdentifier
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+ "&Layer=" + layer
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+ "&Style=" + style
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+ "&Format=" + format
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+ "&TileMatrixSet={TileMatrixSet}"
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+ "&TileMatrix={TileMatrix}"
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@ -207,7 +207,7 @@ namespace MapControl
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if (string.IsNullOrEmpty(urlTemplate))
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{
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throw new ArgumentException($"No ResourceURL element in Layer \"{layerIdentifier}\" and no GetTile KVP Operation Metadata found.");
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throw new ArgumentException($"No ResourceURL element in Layer \"{layer}\" and no GetTile KVP Operation Metadata found.");
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}
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return urlTemplate;
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@ -28,8 +28,11 @@ namespace MapControl
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nameof(CapabilitiesUri), typeof(Uri), typeof(WmtsTileLayer),
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new PropertyMetadata(null, (o, e) => ((WmtsTileLayer)o).TileMatrixSets.Clear()));
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public static readonly DependencyProperty LayerIdentifierProperty = DependencyProperty.Register(
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nameof(LayerIdentifier), typeof(string), typeof(WmtsTileLayer), new PropertyMetadata(null));
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public static readonly DependencyProperty LayerProperty = DependencyProperty.Register(
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nameof(Layer), typeof(string), typeof(WmtsTileLayer), new PropertyMetadata(null));
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public static readonly DependencyProperty PreferredTileMatrixSetsProperty = DependencyProperty.Register(
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nameof(PreferredTileMatrixSets), typeof(string[]), typeof(WmtsTileLayer), new PropertyMetadata(null));
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public WmtsTileLayer()
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: this(new TileImageLoader())
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@ -52,12 +55,22 @@ namespace MapControl
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}
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/// <summary>
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/// The ows:Identifier of the Layer that should be displayed. If not set, the first Layer is displayed.
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/// The Identifier of the Layer that should be displayed. If not set, the first Layer is displayed.
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/// </summary>
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public string LayerIdentifier
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public string Layer
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{
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get => (string)GetValue(LayerIdentifierProperty);
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set => SetValue(LayerIdentifierProperty, value);
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get => (string)GetValue(LayerProperty);
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set => SetValue(LayerProperty, value);
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}
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/// <summary>
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/// In case there are TileMatrixSets with identical SupportedCRS values,
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/// the ones with Identifiers contained in this collection take precedence.
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/// </summary>
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public string[] PreferredTileMatrixSets
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{
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get => (string[])GetValue(PreferredTileMatrixSetsProperty);
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set => SetValue(PreferredTileMatrixSetsProperty, value);
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}
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public IEnumerable<WmtsTileMatrixLayer> ChildLayers => Children.Cast<WmtsTileMatrixLayer>();
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@ -168,9 +181,9 @@ namespace MapControl
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if (!string.IsNullOrEmpty(cacheName))
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{
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if (!string.IsNullOrEmpty(LayerIdentifier))
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if (!string.IsNullOrEmpty(Layer))
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{
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cacheName += "/" + LayerIdentifier.Replace(':', '_');
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cacheName += "/" + Layer.Replace(':', '_');
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}
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cacheName += "/" + tileMatrixSet.Identifier.Replace(':', '_');
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@ -184,19 +197,22 @@ namespace MapControl
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private async void OnLoaded(object sender, RoutedEventArgs e)
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{
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Loaded -= OnLoaded;
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if (TileMatrixSets.Count == 0 && CapabilitiesUri != null)
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{
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try
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{
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var capabilities = await WmtsCapabilities.ReadCapabilitiesAsync(CapabilitiesUri, LayerIdentifier);
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var capabilities = await WmtsCapabilities.ReadCapabilitiesAsync(CapabilitiesUri, Layer);
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foreach (var tileMatrixSet in capabilities.TileMatrixSets
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.Where(s => !TileMatrixSets.ContainsKey(s.SupportedCrs)))
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.Where(s => !TileMatrixSets.ContainsKey(s.SupportedCrs) ||
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PreferredTileMatrixSets != null && PreferredTileMatrixSets.Contains(s.Identifier)))
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{
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TileMatrixSets.Add(tileMatrixSet.SupportedCrs, tileMatrixSet);
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TileMatrixSets[tileMatrixSet.SupportedCrs] = tileMatrixSet;
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}
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LayerIdentifier = capabilities.LayerIdentifier;
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Layer = capabilities.Layer;
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TileSource = capabilities.TileSource;
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}
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catch (Exception ex)
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