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Update TileImageLoader.cs

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This commit is contained in:
Clemens 2021-07-05 14:51:28 +02:00
parent 3cdbbe1e13
commit 6a4a784f32
1 changed files with 6 additions and 5 deletions
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11
MapControl/Shared/TileImageLoader.cs
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@ -56,9 +56,12 @@ namespace MapControl
/// If tileSource.UriFormat starts with "http" and tileCacheName is a non-empty string,
/// tile images will be cached in the TileImageLoader's Cache (if that is not null).
/// </summary>
public async Task LoadTiles(IEnumerable<Tile> tiles, TileSource tileSource, string cacheName)
public Task LoadTiles(IEnumerable<Tile> tiles, TileSource tileSource, string cacheName)
{
var tasks = new List<Task>();
tileQueue.Clear();
TileSource = tileSource;
tiles = tiles.Where(tile => tile.Pending);
@ -75,17 +78,15 @@ namespace MapControl
tileQueue.Enqueue(tile);
}
var tasks = new List<Task>();
while (taskCount < Math.Min(tileQueue.Count, MaxLoadTasks))
{
Interlocked.Increment(ref taskCount);
tasks.Add(LoadTilesFromQueueAsync(tileSource, cacheName));
}
await Task.WhenAll(tasks);
}
return tasks.Count > 0 ? Task.WhenAll(tasks) : Task.CompletedTask;
}
private async Task LoadTilesFromQueueAsync(TileSource tileSource, string cacheName)