internal TileSource GetTileSource(TileId tileId)
{
TileSource tileSource = null;
TilesDownloadManager manager = this.downloadManager;
if (manager != null)
{
tileSource = manager.GetTileSource(tileId);
}
return(tileSource);
}
private void RemoveTile(TileId key)
{
TileSource tileSource = this.requests[key];
if (tileSource != null)
{
this.tileCacheSize -= tileSource.Size;
tileSource.Dispose();
}
this.requestList.Remove(key);
this.requests.Remove(key);
}
private void UpdateTile(TileDownloadState e)
{
TilesDownloadManager manager = this.downloadManager;
if (manager != null)
{
TileSource tileSource = new TileSource(e.TileId, e.TileBody);
manager.UpdateRequest(tileSource);
if (e.TileBody != null && manager.ValidateTile(e.TileId))
{
this.OnTileAvailable();
}
e.Dispose();
}
}
internal TileSource GetTileSource(TileId tileId)
{
TileSource tileSource = null;
if (!this.abort)
{
lock (this.requestsSyncronizer)
{
if (this.requests.ContainsKey(tileId))
{
tileSource = this.requests[tileId] as TileSource;
}
}
}
return(tileSource);
}
private void SetTileSource(MapTile tile, TileId tileId, MultiScaleTileSource source)
{
bool refresh = false;
if (!tileId.Equals(tile.TileId))
{
tile.TileId = tileId;
refresh = true;
}
while (true)
{
TileSource tileSource = source.GetTileSource(tileId);
if (tileSource != null)
{
if (tile.Source != tileSource || refresh)
{
tile.Source = tileSource;
}
if (tileSource.IsUsed)
{
this.usedTiles.Add(tileSource);
this.unusedTiles.Remove(tileSource);
break;
}
else
{
tileSource = null;
}
}
if (tileSource == null)
{
tileId = this.ReduceTileId(tileId);
if (tileId == null)
{
tile.Source = null;
break;
}
}
}
}
private void UpdateTileChache()
{
int tilesCounter;
lock (this.requestsSyncronizer)
{
tilesCounter = this.requestList.Count;
}
for (int i = 0;
i < MaxRemovedTiles &&
tilesCounter > this.MinTileNumber &&
this.tileCacheSize > this.MaxTileCacheSize;
i++)
{
lock (this.requestsSyncronizer)
{
TileId removed = this.requestList[0];
TileSource tileSource = this.requests[removed];
if (tileSource != null && !tileSource.IsUsed)
{
this.tileCacheSize -= tileSource.Size;
tileSource.Dispose();
this.requestList.RemoveAt(0);
this.requests.Remove(removed);
}
else
{
this.requestList.Remove(removed);
this.requestList.Add(removed);
break;
}
tilesCounter = this.requestList.Count;
}
}
}
