private MBTileSource(MBTileData tileData, IDictionary <string, string> metaData)
{
this.tileData = tileData;
string s;
int minZoom;
int maxZoom;
if (metaData.TryGetValue("name", out s))
{
Name = s;
}
if (metaData.TryGetValue("description", out s))
{
Description = s;
}
if (metaData.TryGetValue("minzoom", out s) && int.TryParse(s, out minZoom))
{
MinZoom = minZoom;
}
if (metaData.TryGetValue("maxzoom", out s) && int.TryParse(s, out maxZoom))
{
MaxZoom = maxZoom;
}
}
public static async Task <MBTileData> CreateAsync(string file)
{
var tileData = new MBTileData(file);
await tileData.OpenAsync();
return(tileData);
}
public MBTileSource(MBTileData tiledata)
{
var format = tiledata.Metadata["format"];
if (format == "png" || format == "jpg")
{
TileData = tiledata;
}
else
{
Debug.WriteLine($"MBTileSource: unsupported format '{format}'");
}
}
private async Task FilePropertyChanged(string file)
{
(TileSource as MBTileSource)?.Dispose();
ClearValue(TileSourceProperty);
ClearValue(SourceNameProperty);
ClearValue(DescriptionProperty);
ClearValue(MinZoomLevelProperty);
ClearValue(MaxZoomLevelProperty);
if (file != null)
{
var tileData = await MBTileData.CreateAsync(file);
int minZoom;
int maxZoom;
string s;
if (tileData.Metadata.TryGetValue("name", out s))
{
SourceName = s;
}
if (tileData.Metadata.TryGetValue("description", out s))
{
Description = s;
}
if (tileData.Metadata.TryGetValue("minzoom", out s) && int.TryParse(s, out minZoom))
{
MinZoomLevel = minZoom;
}
if (tileData.Metadata.TryGetValue("maxzoom", out s) && int.TryParse(s, out maxZoom))
{
MaxZoomLevel = maxZoom;
}
TileSource = CreateTileSource(tileData);
}
}
public MBTileSource(string file)
{
tileData = new MBTileData(file);
}
public MBTileSource(MBTileData tiledata)
{
TileData = tiledata;
}
/// <summary>
/// May be overridden to create a derived MBTileSource that handles other tile formats than png and jpg, e.g. pbf.
/// </summary>
protected virtual MBTileSource CreateTileSource(MBTileData tileData)
{
return(new MBTileSource(tileData));
}
public static async Task <MBTileSource> CreateAsync(string file)
{
var tileData = await MBTileData.CreateAsync(file);
return(new MBTileSource(tileData, await tileData.ReadMetaDataAsync()));
}
