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https://github.com/ClemensFischer/XAML-Map-Control.git
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IMapLayer.SupportedMapProjections
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ClemensFischer
parent
046cebb341
commit
b5dac4a854
8 changed files with 144 additions and 103 deletions
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@ -16,6 +16,7 @@ using Microsoft.UI.Xaml;
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using Microsoft.UI.Xaml.Media;
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#elif AVALONIA
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using Avalonia;
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using Avalonia.Interactivity;
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#endif
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namespace MapControl
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@ -26,27 +27,24 @@ namespace MapControl
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public partial class WmsImageLayer : MapImageLayer
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{
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private static ILogger logger;
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private static ILogger Logger => logger ??= ImageLoader.LoggerFactory?.CreateLogger<GroundOverlay>();
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private static ILogger Logger => logger ??= ImageLoader.LoggerFactory?.CreateLogger(typeof(WmsImageLayer));
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public static readonly DependencyProperty ServiceUriProperty =
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DependencyPropertyHelper.Register<WmsImageLayer, Uri>(nameof(ServiceUri), null,
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async (layer, oldValue, newValue) => await layer.UpdateImageAsync());
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public static readonly DependencyProperty WmsStylesProperty =
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DependencyPropertyHelper.Register<WmsImageLayer, string>(nameof(WmsStyles), "",
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public static readonly DependencyProperty RequestStylesProperty =
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DependencyPropertyHelper.Register<WmsImageLayer, string>(nameof(RequestStyles), "",
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async (layer, oldValue, newValue) => await layer.UpdateImageAsync());
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public static readonly DependencyProperty WmsLayersProperty =
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DependencyPropertyHelper.Register<WmsImageLayer, string>(nameof(WmsLayers), null,
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async (layer, oldValue, newValue) =>
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{
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// Ignore property change from GetImageAsync when WmsLayers was null.
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//
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if (oldValue != null)
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{
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await layer.UpdateImageAsync();
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}
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});
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public static readonly DependencyProperty RequestLayersProperty =
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DependencyPropertyHelper.Register<WmsImageLayer, string>(nameof(RequestLayers), null,
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async (layer, oldValue, newValue) => await layer.UpdateImageAsync());
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public WmsImageLayer()
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{
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Loaded += OnLoaded;
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}
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/// <summary>
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/// The base request URL.
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@ -60,42 +58,30 @@ namespace MapControl
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/// <summary>
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/// Comma-separated sequence of requested WMS Styles. Default is an empty string.
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/// </summary>
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public string WmsStyles
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public string RequestStyles
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{
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get => (string)GetValue(WmsStylesProperty);
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set => SetValue(WmsStylesProperty, value);
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get => (string)GetValue(RequestStylesProperty);
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set => SetValue(RequestStylesProperty, value);
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}
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/// <summary>
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/// Comma-separated sequence of WMS Layer names to be displayed. If not set, the first Layer is displayed.
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/// Comma-separated sequence of WMS Layer names to be displayed. If not set, the default Layer is displayed.
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/// </summary>
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public string WmsLayers
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public string RequestLayers
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{
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get => (string)GetValue(WmsLayersProperty);
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set => SetValue(WmsLayersProperty, value);
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get => (string)GetValue(RequestLayersProperty);
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set => SetValue(RequestLayersProperty, value);
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}
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/// <summary>
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/// Gets a list of all layer names returned by a GetCapabilities response.
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/// Gets a collection of all Layer names available in a WMS.
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/// </summary>
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public async Task<IEnumerable<string>> GetLayerNamesAsync()
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{
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IEnumerable<string> layerNames = null;
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public IReadOnlyCollection<string> AvailableLayers { get; private set; }
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var capabilities = await GetCapabilitiesAsync();
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if (capabilities != null)
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{
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var ns = capabilities.Name.Namespace;
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layerNames = capabilities
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.Descendants(ns + "Layer")
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.Select(e => e.Element(ns + "Name")?.Value)
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.Where(n => !string.IsNullOrEmpty(n));
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}
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return layerNames;
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}
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/// <summary>
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/// Gets a collection of all CRSs supported by a WMS.
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/// </summary>
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public override IReadOnlyCollection<string> SupportedMapProjections => mapProjections;
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/// <summary>
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/// Loads an XElement from the URL returned by GetCapabilitiesRequestUri().
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@ -167,48 +153,37 @@ namespace MapControl
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try
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{
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if (ServiceUri != null && ParentMap?.MapProjection != null)
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if (boundingBox.West >= -180d && boundingBox.East <= 180d ||
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ParentMap.MapProjection.Type > MapProjectionType.NormalCylindrical)
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{
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if (WmsLayers == null &&
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ServiceUri.OriginalString.IndexOf("LAYERS=", StringComparison.OrdinalIgnoreCase) < 0)
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var uri = GetMapRequestUri(boundingBox);
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if (uri != null)
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{
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// Get first Layer from a GetCapabilities response.
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//
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WmsLayers = (await GetLayerNamesAsync())?.FirstOrDefault() ?? "";
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image = await ImageLoader.LoadImageAsync(new Uri(uri), progress);
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}
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}
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else
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{
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BoundingBox bbox1, bbox2;
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if (boundingBox.West >= -180d && boundingBox.East <= 180d ||
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ParentMap.MapProjection.Type > MapProjectionType.NormalCylindrical)
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if (boundingBox.West < -180d)
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{
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var uri = GetMapRequestUri(boundingBox);
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if (uri != null)
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{
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image = await ImageLoader.LoadImageAsync(new Uri(uri), progress);
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}
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bbox1 = new BoundingBox(boundingBox.South, boundingBox.West + 360, boundingBox.North, 180d);
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bbox2 = new BoundingBox(boundingBox.South, -180d, boundingBox.North, boundingBox.East);
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}
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else
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{
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BoundingBox bbox1, bbox2;
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bbox1 = new BoundingBox(boundingBox.South, boundingBox.West, boundingBox.North, 180d);
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bbox2 = new BoundingBox(boundingBox.South, -180d, boundingBox.North, boundingBox.East - 360d);
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}
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if (boundingBox.West < -180d)
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{
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bbox1 = new BoundingBox(boundingBox.South, boundingBox.West + 360, boundingBox.North, 180d);
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bbox2 = new BoundingBox(boundingBox.South, -180d, boundingBox.North, boundingBox.East);
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}
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else
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{
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bbox1 = new BoundingBox(boundingBox.South, boundingBox.West, boundingBox.North, 180d);
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bbox2 = new BoundingBox(boundingBox.South, -180d, boundingBox.North, boundingBox.East - 360d);
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}
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var uri1 = GetMapRequestUri(bbox1);
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var uri2 = GetMapRequestUri(bbox2);
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var uri1 = GetMapRequestUri(bbox1);
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var uri2 = GetMapRequestUri(bbox2);
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if (uri1 != null && uri2 != null)
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{
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image = await ImageLoader.LoadMergedImageAsync(new Uri(uri1), new Uri(uri2), progress);
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}
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if (uri1 != null && uri2 != null)
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{
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image = await ImageLoader.LoadMergedImageAsync(new Uri(uri1), new Uri(uri2), progress);
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}
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}
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}
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@ -251,8 +226,8 @@ namespace MapControl
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{ "SERVICE", "WMS" },
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{ "VERSION", "1.3.0" },
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{ "REQUEST", "GetMap" },
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{ "LAYERS", WmsLayers ?? "" },
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{ "STYLES", WmsStyles ?? "" },
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{ "LAYERS", RequestLayers ?? "" },
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{ "STYLES", RequestStyles ?? "" },
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{ "FORMAT", "image/png" },
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{ "CRS", GetCrsValue() },
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{ "BBOX", GetBboxValue(boundingBox, bbox.Value) },
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@ -289,8 +264,8 @@ namespace MapControl
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{ "SERVICE", "WMS" },
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{ "VERSION", "1.3.0" },
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{ "REQUEST", "GetFeatureInfo" },
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{ "LAYERS", WmsLayers ?? "" },
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{ "STYLES", WmsStyles ?? "" },
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{ "LAYERS", RequestLayers ?? "" },
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{ "STYLES", RequestStyles ?? "" },
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{ "FORMAT", "image/png" },
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{ "INFO_FORMAT", format },
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{ "CRS", GetCrsValue() },
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@ -312,25 +287,25 @@ namespace MapControl
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protected virtual string GetCrsValue()
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{
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var projection = ParentMap.MapProjection;
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var crsId = projection.CrsId;
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var crs = projection.CrsId;
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if (crsId.StartsWith("AUTO2:") || crsId.StartsWith("AUTO:"))
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if (crs.StartsWith("AUTO2:") || crs.StartsWith("AUTO:"))
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{
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crsId = string.Format(CultureInfo.InvariantCulture, "{0},1,{1},{2}", crsId, projection.Center.Longitude, projection.Center.Latitude);
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crs = string.Format(CultureInfo.InvariantCulture, "{0},1,{1},{2}", crs, projection.Center.Longitude, projection.Center.Latitude);
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}
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return crsId;
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return crs;
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}
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protected virtual string GetBboxValue(BoundingBox boundingBox, Rect mapBoundingBox)
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{
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var crsId = ParentMap.MapProjection.CrsId;
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var crs = ParentMap.MapProjection.CrsId;
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string format;
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double x1, y1, x2, y2;
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if (crsId == "CRS:84" || crsId == "EPSG:4326")
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if (crs == "CRS:84" || crs == "EPSG:4326")
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{
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format = crsId == "CRS:84" ? "{0:F8},{1:F8},{2:F8},{3:F8}" : "{1:F8},{0:F8},{3:F8},{2:F8}";
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format = crs == "CRS:84" ? "{0:F8},{1:F8},{2:F8},{3:F8}" : "{1:F8},{0:F8},{3:F8},{2:F8}";
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x1 = boundingBox.West;
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y1 = boundingBox.South;
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x2 = boundingBox.East;
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@ -366,5 +341,48 @@ namespace MapControl
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return uri.Replace(" ", "%20");
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}
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private List<string> mapProjections;
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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 (AvailableLayers == null && ServiceUri != null)
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{
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var capabilities = await GetCapabilitiesAsync();
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if (capabilities != null)
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{
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var ns = capabilities.Name.Namespace;
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var capability = capabilities.Element(ns + "Capability");
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mapProjections = capability
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.Element(ns + "Layer")
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.Descendants(ns + "CRS")
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.Select(e => e.Value)
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.ToList();
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var layerNames = capability
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.Descendants(ns + "Layer")
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.Select(e => e.Element(ns + "Name")?.Value)
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.Where(n => !string.IsNullOrEmpty(n))
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.ToList();
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AvailableLayers = layerNames;
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if (layerNames.Count > 0 &&
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RequestLayers == null &&
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ServiceUri.OriginalString.IndexOf("LAYERS=", StringComparison.OrdinalIgnoreCase) < 0)
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{
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RequestLayers = layerNames[0];
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}
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else
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{
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await UpdateImageAsync();
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}
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}
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}
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}
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}
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}
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