mirror of
https://github.com/ClemensFischer/XAML-Map-Control.git
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File scoped namespaces
This commit is contained in:
ClemensFischer
parent
c14377f976
commit
65aba44af6
152 changed files with 11962 additions and 12115 deletions
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@ -20,336 +20,335 @@ using Avalonia.Interactivity;
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using ImageSource = Avalonia.Media.IImage;
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#endif
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namespace MapControl
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namespace MapControl;
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/// <summary>
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/// Displays a single map image from a Web Map Service (WMS).
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/// </summary>
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public partial class WmsImageLayer : MapImageLayer
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{
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private static ILogger Logger => field ??= 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 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 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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/// <summary>
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/// Displays a single map image from a Web Map Service (WMS).
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/// The base request URL.
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/// </summary>
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public partial class WmsImageLayer : MapImageLayer
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public Uri ServiceUri
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{
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private static ILogger Logger => field ??= ImageLoader.LoggerFactory?.CreateLogger(typeof(WmsImageLayer));
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get => (Uri)GetValue(ServiceUriProperty);
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set => SetValue(ServiceUriProperty, value);
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}
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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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/// <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 RequestStyles
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{
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get => (string)GetValue(RequestStylesProperty);
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set => SetValue(RequestStylesProperty, value);
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}
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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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/// <summary>
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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 RequestLayers
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{
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get => (string)GetValue(RequestLayersProperty);
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set => SetValue(RequestLayersProperty, value);
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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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/// <summary>
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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 IReadOnlyCollection<string> AvailableLayers { get; private set; }
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/// <summary>
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/// The base request URL.
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/// </summary>
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public Uri ServiceUri
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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 IReadOnlyCollection<string> SupportedCrsIds { get; private set; }
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private bool HasLayer =>
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RequestLayers != null ||
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AvailableLayers?.Count > 0 ||
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ServiceUri.Query?.IndexOf("LAYERS=", StringComparison.OrdinalIgnoreCase) > 0;
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public WmsImageLayer()
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{
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Loaded += OnLoaded;
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}
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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 (ServiceUri != null && !HasLayer)
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{
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get => (Uri)GetValue(ServiceUriProperty);
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set => SetValue(ServiceUriProperty, value);
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}
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await InitializeAsync();
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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 RequestStyles
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{
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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 default Layer is displayed.
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/// </summary>
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public string RequestLayers
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{
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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 collection of all Layer names available in a WMS.
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/// </summary>
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public IReadOnlyCollection<string> AvailableLayers { get; private set; }
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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 IReadOnlyCollection<string> SupportedCrsIds { get; private set; }
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private bool HasLayer =>
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RequestLayers != null ||
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AvailableLayers?.Count > 0 ||
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ServiceUri.Query?.IndexOf("LAYERS=", StringComparison.OrdinalIgnoreCase) > 0;
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public WmsImageLayer()
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{
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Loaded += OnLoaded;
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}
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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 (ServiceUri != null && !HasLayer)
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if (AvailableLayers != null && AvailableLayers.Count > 0)
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{
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await InitializeAsync();
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if (AvailableLayers != null && AvailableLayers.Count > 0)
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{
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await UpdateImageAsync();
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}
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await UpdateImageAsync();
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}
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}
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/// <summary>
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/// Initializes the AvailableLayers and SupportedCrsIds properties.
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/// Calling this method is only necessary when no layer name is known in advance.
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/// It is called internally in a Loaded event handler when the RequestLayers and AvailableLayers
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/// properties are null and the ServiceUri.Query part does not contain a LAYERS parameter.
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/// </summary>
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public async Task InitializeAsync()
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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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AvailableLayers = 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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SupportedCrsIds = capability
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.Descendants(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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}
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}
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/// <summary>
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/// Loads an XElement from the URL returned by GetCapabilitiesRequestUri().
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/// </summary>
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public async Task<XElement> GetCapabilitiesAsync()
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{
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XElement element = null;
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if (ServiceUri != null)
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{
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var uri = GetCapabilitiesRequestUri();
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try
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{
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using var stream = await ImageLoader.HttpClient.GetStreamAsync(uri);
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element = await XDocument.LoadRootElementAsync(stream);
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}
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catch (Exception ex)
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{
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Logger?.LogError(ex, "Failed reading capabilities from {uri}", uri);
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}
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}
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return element;
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}
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/// <summary>
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/// Gets a response string from the URL returned by GetFeatureInfoRequestUri().
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/// </summary>
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public async Task<string> GetFeatureInfoAsync(Point position, string format = "text/plain")
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{
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string response = null;
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if (ServiceUri != null && HasLayer &&
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ParentMap != null && ParentMap.InsideViewBounds(position) &&
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(SupportedCrsIds == null || SupportedCrsIds.Contains(ParentMap.MapProjection.CrsId)))
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{
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var uri = GetFeatureInfoRequestUri(position, format);
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try
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{
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response = await ImageLoader.HttpClient.GetStringAsync(uri);
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}
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catch (Exception ex)
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{
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Logger?.LogError(ex, "Failed reading feature info from {uri}", uri);
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}
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}
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return response;
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}
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/// <summary>
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/// Loads an ImageSource from the URL returned by GetMapRequestUri().
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/// </summary>
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protected override async Task<ImageSource> GetImageAsync(Rect bbox, IProgress<double> progress)
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{
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ImageSource image = null;
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if (ServiceUri != null && HasLayer &&
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(SupportedCrsIds == null || SupportedCrsIds.Contains(ParentMap.MapProjection.CrsId)))
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{
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var xMin = -180d * MapProjection.Wgs84MeterPerDegree;
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var xMax = 180d * MapProjection.Wgs84MeterPerDegree;
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if (!ParentMap.MapProjection.IsNormalCylindrical ||
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bbox.X >= xMin && bbox.X + bbox.Width <= xMax)
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{
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var uri = GetMapRequestUri(bbox);
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image = await ImageLoader.LoadImageAsync(uri, progress);
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}
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else
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{
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var x = bbox.X;
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if (x < xMin)
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{
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x += xMax - xMin;
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}
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var width1 = Math.Floor(xMax * 1e3) / 1e3 - x; // round down xMax to avoid gap between images
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var width2 = bbox.Width - width1;
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var bbox1 = new Rect(x, bbox.Y, width1, bbox.Height);
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var bbox2 = new Rect(xMin, bbox.Y, width2, bbox.Height);
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var uri1 = GetMapRequestUri(bbox1);
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var uri2 = GetMapRequestUri(bbox2);
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image = await ImageLoader.LoadMergedImageAsync(uri1, uri2, progress);
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}
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}
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return image;
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}
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/// <summary>
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/// Returns a GetCapabilities request URL string.
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/// </summary>
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protected virtual Uri GetCapabilitiesRequestUri()
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{
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return GetRequestUri(new Dictionary<string, string>
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{
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{ "SERVICE", "WMS" },
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{ "VERSION", "1.3.0" },
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{ "REQUEST", "GetCapabilities" }
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});
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}
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/// <summary>
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/// Returns a GetMap request URL string.
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/// </summary>
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protected virtual Uri GetMapRequestUri(Rect bbox)
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{
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var width = ParentMap.ViewTransform.Scale * bbox.Width;
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var height = ParentMap.ViewTransform.Scale * bbox.Height;
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return GetRequestUri(new Dictionary<string, string>
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{
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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", RequestLayers ?? AvailableLayers?.FirstOrDefault() ?? "" },
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{ "STYLES", RequestStyles ?? "" },
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{ "FORMAT", "image/png" },
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{ "CRS", ParentMap.MapProjection.CrsId },
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{ "BBOX", GetBboxValue(bbox) },
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{ "WIDTH", Math.Ceiling(width).ToString("F0") },
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{ "HEIGHT", Math.Ceiling(height).ToString("F0") }
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});
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}
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/// <summary>
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/// Returns a GetFeatureInfo request URL string.
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/// </summary>
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protected virtual Uri GetFeatureInfoRequestUri(Point position, string format)
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{
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var width = ParentMap.ActualWidth;
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var height = ParentMap.ActualHeight;
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var bbox = ParentMap.ViewTransform.ViewToMapBounds(new Rect(0d, 0d, width, height));
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if (ParentMap.ViewTransform.Rotation != 0d)
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{
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width = ParentMap.ViewTransform.Scale * bbox.Width;
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height = ParentMap.ViewTransform.Scale * bbox.Height;
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var transform = new Matrix(1d, 0d, 0d, 1d, -ParentMap.ActualWidth / 2d, -ParentMap.ActualHeight / 2d);
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transform.Rotate(-ParentMap.ViewTransform.Rotation);
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transform.Translate(width / 2d, height / 2d);
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position = transform.Transform(position);
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}
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var queryParameters = new Dictionary<string, string>
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{
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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", RequestLayers ?? AvailableLayers?.FirstOrDefault() ?? "" },
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{ "STYLES", RequestStyles ?? "" },
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{ "INFO_FORMAT", format },
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{ "CRS", ParentMap.MapProjection.CrsId },
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{ "BBOX", GetBboxValue(bbox) },
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{ "WIDTH", Math.Ceiling(width).ToString("F0") },
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{ "HEIGHT", Math.Ceiling(height).ToString("F0") },
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{ "I", position.X.ToString("F0") },
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{ "J", position.Y.ToString("F0") }
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};
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// GetRequestUri may modify queryParameters["LAYERS"].
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//
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var uriBuilder = new UriBuilder(GetRequestUri(queryParameters));
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uriBuilder.Query += "&QUERY_LAYERS=" + queryParameters["LAYERS"];
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return uriBuilder.Uri;
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}
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protected virtual Uri GetRequestUri(IDictionary<string, string> queryParameters)
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{
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var query = ServiceUri.Query;
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if (!string.IsNullOrEmpty(query))
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{
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// Parameters from ServiceUri.Query take higher precedence than queryParameters.
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//
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foreach (var param in query.Substring(1).Split('&'))
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{
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var pair = param.Split('=');
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queryParameters[pair[0]] = pair.Length > 1 ? pair[1] : "";
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}
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}
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query = string.Join("&", queryParameters.Select(kv => kv.Key + "=" + kv.Value));
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return new Uri(ServiceUri.GetLeftPart(UriPartial.Path) + "?" + query);
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}
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protected virtual string GetBboxValue(Rect bbox)
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{
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var crs = ParentMap.MapProjection.CrsId;
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var format = "{0:0.###},{1:0.###},{2:0.###},{3:0.###}";
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var x1 = bbox.X;
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var y1 = bbox.Y;
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var x2 = bbox.X + bbox.Width;
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var y2 = bbox.Y + bbox.Height;
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if (crs == "CRS:84" || crs == "EPSG:4326")
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{
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format = crs == "CRS:84"
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? "{0:0.########},{1:0.########},{2:0.########},{3:0.########}"
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: "{1:0.########},{0:0.########},{3:0.########},{2:0.########}";
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x1 /= MapProjection.Wgs84MeterPerDegree;
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y1 /= MapProjection.Wgs84MeterPerDegree;
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x2 /= MapProjection.Wgs84MeterPerDegree;
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y2 /= MapProjection.Wgs84MeterPerDegree;
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}
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return string.Format(CultureInfo.InvariantCulture, format, x1, y1, x2, y2);
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}
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}
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/// <summary>
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/// Initializes the AvailableLayers and SupportedCrsIds properties.
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/// Calling this method is only necessary when no layer name is known in advance.
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/// It is called internally in a Loaded event handler when the RequestLayers and AvailableLayers
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/// properties are null and the ServiceUri.Query part does not contain a LAYERS parameter.
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/// </summary>
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public async Task InitializeAsync()
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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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AvailableLayers = 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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SupportedCrsIds = capability
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.Descendants(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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}
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}
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/// <summary>
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/// Loads an XElement from the URL returned by GetCapabilitiesRequestUri().
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/// </summary>
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public async Task<XElement> GetCapabilitiesAsync()
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{
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XElement element = null;
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if (ServiceUri != null)
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{
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var uri = GetCapabilitiesRequestUri();
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try
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{
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using var stream = await ImageLoader.HttpClient.GetStreamAsync(uri);
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element = await XDocument.LoadRootElementAsync(stream);
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}
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catch (Exception ex)
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{
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Logger?.LogError(ex, "Failed reading capabilities from {uri}", uri);
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}
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}
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return element;
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}
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/// <summary>
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/// Gets a response string from the URL returned by GetFeatureInfoRequestUri().
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/// </summary>
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public async Task<string> GetFeatureInfoAsync(Point position, string format = "text/plain")
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{
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string response = null;
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|
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if (ServiceUri != null && HasLayer &&
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ParentMap != null && ParentMap.InsideViewBounds(position) &&
|
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(SupportedCrsIds == null || SupportedCrsIds.Contains(ParentMap.MapProjection.CrsId)))
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{
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var uri = GetFeatureInfoRequestUri(position, format);
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try
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{
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response = await ImageLoader.HttpClient.GetStringAsync(uri);
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}
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||||
catch (Exception ex)
|
||||
{
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Logger?.LogError(ex, "Failed reading feature info from {uri}", uri);
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}
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}
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return response;
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}
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/// <summary>
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/// Loads an ImageSource from the URL returned by GetMapRequestUri().
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/// </summary>
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protected override async Task<ImageSource> GetImageAsync(Rect bbox, IProgress<double> progress)
|
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{
|
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ImageSource image = null;
|
||||
|
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if (ServiceUri != null && HasLayer &&
|
||||
(SupportedCrsIds == null || SupportedCrsIds.Contains(ParentMap.MapProjection.CrsId)))
|
||||
{
|
||||
var xMin = -180d * MapProjection.Wgs84MeterPerDegree;
|
||||
var xMax = 180d * MapProjection.Wgs84MeterPerDegree;
|
||||
|
||||
if (!ParentMap.MapProjection.IsNormalCylindrical ||
|
||||
bbox.X >= xMin && bbox.X + bbox.Width <= xMax)
|
||||
{
|
||||
var uri = GetMapRequestUri(bbox);
|
||||
|
||||
image = await ImageLoader.LoadImageAsync(uri, progress);
|
||||
}
|
||||
else
|
||||
{
|
||||
var x = bbox.X;
|
||||
|
||||
if (x < xMin)
|
||||
{
|
||||
x += xMax - xMin;
|
||||
}
|
||||
|
||||
var width1 = Math.Floor(xMax * 1e3) / 1e3 - x; // round down xMax to avoid gap between images
|
||||
var width2 = bbox.Width - width1;
|
||||
var bbox1 = new Rect(x, bbox.Y, width1, bbox.Height);
|
||||
var bbox2 = new Rect(xMin, bbox.Y, width2, bbox.Height);
|
||||
var uri1 = GetMapRequestUri(bbox1);
|
||||
var uri2 = GetMapRequestUri(bbox2);
|
||||
|
||||
image = await ImageLoader.LoadMergedImageAsync(uri1, uri2, progress);
|
||||
}
|
||||
}
|
||||
|
||||
return image;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns a GetCapabilities request URL string.
|
||||
/// </summary>
|
||||
protected virtual Uri GetCapabilitiesRequestUri()
|
||||
{
|
||||
return GetRequestUri(new Dictionary<string, string>
|
||||
{
|
||||
{ "SERVICE", "WMS" },
|
||||
{ "VERSION", "1.3.0" },
|
||||
{ "REQUEST", "GetCapabilities" }
|
||||
});
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns a GetMap request URL string.
|
||||
/// </summary>
|
||||
protected virtual Uri GetMapRequestUri(Rect bbox)
|
||||
{
|
||||
var width = ParentMap.ViewTransform.Scale * bbox.Width;
|
||||
var height = ParentMap.ViewTransform.Scale * bbox.Height;
|
||||
|
||||
return GetRequestUri(new Dictionary<string, string>
|
||||
{
|
||||
{ "SERVICE", "WMS" },
|
||||
{ "VERSION", "1.3.0" },
|
||||
{ "REQUEST", "GetMap" },
|
||||
{ "LAYERS", RequestLayers ?? AvailableLayers?.FirstOrDefault() ?? "" },
|
||||
{ "STYLES", RequestStyles ?? "" },
|
||||
{ "FORMAT", "image/png" },
|
||||
{ "CRS", ParentMap.MapProjection.CrsId },
|
||||
{ "BBOX", GetBboxValue(bbox) },
|
||||
{ "WIDTH", Math.Ceiling(width).ToString("F0") },
|
||||
{ "HEIGHT", Math.Ceiling(height).ToString("F0") }
|
||||
});
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns a GetFeatureInfo request URL string.
|
||||
/// </summary>
|
||||
protected virtual Uri GetFeatureInfoRequestUri(Point position, string format)
|
||||
{
|
||||
var width = ParentMap.ActualWidth;
|
||||
var height = ParentMap.ActualHeight;
|
||||
var bbox = ParentMap.ViewTransform.ViewToMapBounds(new Rect(0d, 0d, width, height));
|
||||
|
||||
if (ParentMap.ViewTransform.Rotation != 0d)
|
||||
{
|
||||
width = ParentMap.ViewTransform.Scale * bbox.Width;
|
||||
height = ParentMap.ViewTransform.Scale * bbox.Height;
|
||||
|
||||
var transform = new Matrix(1d, 0d, 0d, 1d, -ParentMap.ActualWidth / 2d, -ParentMap.ActualHeight / 2d);
|
||||
transform.Rotate(-ParentMap.ViewTransform.Rotation);
|
||||
transform.Translate(width / 2d, height / 2d);
|
||||
|
||||
position = transform.Transform(position);
|
||||
}
|
||||
|
||||
var queryParameters = new Dictionary<string, string>
|
||||
{
|
||||
{ "SERVICE", "WMS" },
|
||||
{ "VERSION", "1.3.0" },
|
||||
{ "REQUEST", "GetFeatureInfo" },
|
||||
{ "LAYERS", RequestLayers ?? AvailableLayers?.FirstOrDefault() ?? "" },
|
||||
{ "STYLES", RequestStyles ?? "" },
|
||||
{ "INFO_FORMAT", format },
|
||||
{ "CRS", ParentMap.MapProjection.CrsId },
|
||||
{ "BBOX", GetBboxValue(bbox) },
|
||||
{ "WIDTH", Math.Ceiling(width).ToString("F0") },
|
||||
{ "HEIGHT", Math.Ceiling(height).ToString("F0") },
|
||||
{ "I", position.X.ToString("F0") },
|
||||
{ "J", position.Y.ToString("F0") }
|
||||
};
|
||||
|
||||
// GetRequestUri may modify queryParameters["LAYERS"].
|
||||
//
|
||||
var uriBuilder = new UriBuilder(GetRequestUri(queryParameters));
|
||||
|
||||
uriBuilder.Query += "&QUERY_LAYERS=" + queryParameters["LAYERS"];
|
||||
|
||||
return uriBuilder.Uri;
|
||||
}
|
||||
|
||||
protected virtual Uri GetRequestUri(IDictionary<string, string> queryParameters)
|
||||
{
|
||||
var query = ServiceUri.Query;
|
||||
|
||||
if (!string.IsNullOrEmpty(query))
|
||||
{
|
||||
// Parameters from ServiceUri.Query take higher precedence than queryParameters.
|
||||
//
|
||||
foreach (var param in query.Substring(1).Split('&'))
|
||||
{
|
||||
var pair = param.Split('=');
|
||||
queryParameters[pair[0]] = pair.Length > 1 ? pair[1] : "";
|
||||
}
|
||||
}
|
||||
|
||||
query = string.Join("&", queryParameters.Select(kv => kv.Key + "=" + kv.Value));
|
||||
|
||||
return new Uri(ServiceUri.GetLeftPart(UriPartial.Path) + "?" + query);
|
||||
}
|
||||
|
||||
protected virtual string GetBboxValue(Rect bbox)
|
||||
{
|
||||
var crs = ParentMap.MapProjection.CrsId;
|
||||
var format = "{0:0.###},{1:0.###},{2:0.###},{3:0.###}";
|
||||
var x1 = bbox.X;
|
||||
var y1 = bbox.Y;
|
||||
var x2 = bbox.X + bbox.Width;
|
||||
var y2 = bbox.Y + bbox.Height;
|
||||
|
||||
if (crs == "CRS:84" || crs == "EPSG:4326")
|
||||
{
|
||||
format = crs == "CRS:84"
|
||||
? "{0:0.########},{1:0.########},{2:0.########},{3:0.########}"
|
||||
: "{1:0.########},{0:0.########},{3:0.########},{2:0.########}";
|
||||
x1 /= MapProjection.Wgs84MeterPerDegree;
|
||||
y1 /= MapProjection.Wgs84MeterPerDegree;
|
||||
x2 /= MapProjection.Wgs84MeterPerDegree;
|
||||
y2 /= MapProjection.Wgs84MeterPerDegree;
|
||||
}
|
||||
|
||||
return string.Format(CultureInfo.InvariantCulture, format, x1, y1, x2, y2);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue