ClemensFischer/XAML-Map-Control
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Version 4.2.0

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ClemensF 2017-10-08 17:35:07 +02:00
parent 9f8ef8acb0
commit fd02476c6b
17 changed files with 174 additions and 141 deletions
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44
MapControl/Shared/TileSource.cs
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@ -3,7 +3,16 @@
// Licensed under the Microsoft Public License (Ms-PL)
using System;
using System.Diagnostics;
using System.Globalization;
using System.Threading.Tasks;
#if WINDOWS_UWP
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;
#else
using System.Windows.Media;
using System.Windows.Media.Imaging;
#endif
namespace MapControl
{
@ -85,6 +94,41 @@ namespace MapControl
return getUri?.Invoke(x, y, zoomLevel);
}
/// <summary>
/// Load a tile ImageSource asynchronously from GetUri(x, y, zoomLevel)
/// </summary>
public virtual async Task<ImageSource> LoadImageAsync(int x, int y, int zoomLevel)
{
ImageSource imageSource = null;
var uri = GetUri(x, y, zoomLevel);
if (uri != null)
{
try
{
if (!uri.IsAbsoluteUri || uri.Scheme == "file")
{
imageSource = await LoadLocalImageAsync(uri);
}
else if (uri.Scheme == "http")
{
imageSource = await LoadHttpImageAsync(uri);
}
else
{
imageSource = new BitmapImage(uri);
}
}
catch (Exception ex)
{
Debug.WriteLine("TileSource: {0}: {1}", uri, ex.Message);
}
}
return imageSource;
}
private Uri GetBasicUri(int x, int y, int zoomLevel)
{
return new Uri(uriFormat