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Update TileImageLoader.cs

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ClemensF 2020-04-12 13:26:25 +02:00
parent 8610f77899
commit 23d8256865
1 changed files with 3 additions and 29 deletions
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32
MapControl/Shared/TileImageLoader.cs
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@ -19,9 +19,9 @@ namespace MapControl
public partial class TileImageLoader : ITileImageLoader
{
/// <summary>
/// Maximum number of parallel tile loading tasks. The default value is 4.
/// Maximum number of parallel tile loading tasks. The default value is 8.
/// </summary>
public static int MaxLoadTasks { get; set; } = 4;
public static int MaxLoadTasks { get; set; } = 8;
/// <summary>
/// Default expiration time for cached tile images. Used when no expiration time
@ -29,16 +29,6 @@ namespace MapControl
/// </summary>
public static TimeSpan DefaultCacheExpiration { get; set; } = TimeSpan.FromDays(1);
/// <summary>
/// Minimum expiration time for cached tile images. The default value is one day.
/// </summary>
public static TimeSpan MinCacheExpiration { get; set; } = TimeSpan.FromDays(1);
/// <summary>
/// Maximum expiration time for cached tile images. The default value is one week.
/// </summary>
public static TimeSpan MaxCacheExpiration { get; set; } = TimeSpan.FromDays(7);
/// <summary>
/// Format string for creating cache keys from the sourceName argument passed to LoadTilesAsync,
/// the ZoomLevel, XIndex, and Y properties of a Tile, and the image file extension.
@ -146,23 +136,7 @@ namespace MapControl
private static DateTime GetExpiration(TimeSpan? maxAge)
{
var expiration = DefaultCacheExpiration;
if (maxAge.HasValue)
{
expiration = maxAge.Value;
if (expiration < MinCacheExpiration)
{
expiration = MinCacheExpiration;
}
else if (expiration > MaxCacheExpiration)
{
expiration = MaxCacheExpiration;
}
}
return DateTime.UtcNow.Add(expiration);
return DateTime.UtcNow.Add(maxAge ?? DefaultCacheExpiration);
}
}
}