private async void UWPSyncTileLayer_BitmapRequested(CustomMapTileDataSource sender, MapTileBitmapRequestedEventArgs args)
{
var deferral = args.Request.GetDeferral();
try
{
var data = await _makeTileUri(args.X, args.Y, args.ZoomLevel);
if (data != null)
{
MemoryStream stream = new MemoryStream();
stream.Write(data, 0, data.Length);
stream.Position = 0;
var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream.AsRandomAccessStream());
var pixelProvider = await decoder.GetPixelDataAsync(Windows.Graphics.Imaging.BitmapPixelFormat.Rgba8, Windows.Graphics.Imaging.BitmapAlphaMode.Straight, new Windows.Graphics.Imaging.BitmapTransform(), Windows.Graphics.Imaging.ExifOrientationMode.RespectExifOrientation, Windows.Graphics.Imaging.ColorManagementMode.ColorManageToSRgb);
var pixelData = pixelProvider.DetachPixelData();
InMemoryRandomAccessStream randomAccessStream = new InMemoryRandomAccessStream();
IOutputStream outputStream = randomAccessStream.GetOutputStreamAt(0);
DataWriter writer = new DataWriter(outputStream);
writer.WriteBytes(pixelData);
await writer.StoreAsync();
await writer.FlushAsync();
args.Request.PixelData = RandomAccessStreamReference.CreateFromStream(randomAccessStream);
}
deferral.Complete();
}
catch (Exception ex)
{
deferral.Complete();
}
}
private async void CustomDataSource_BitmapRequested(
CustomMapTileDataSource sender,
MapTileBitmapRequestedEventArgs args)
{
var deferral = args.Request.GetDeferral();
args.Request.PixelData = await CreateBitmapAsStreamAsync();
deferral.Complete();
}
private void LoadMap()
{
CustomMapTileDataSource customDataSource = new CustomMapTileDataSource();
// Attach a handler for the BitmapRequested event.
customDataSource.BitmapRequested += customDataSource_BitmapRequestedAsync;
MapTileSource customTileSource = new MapTileSource(customDataSource);
MyMapControl.TileSources.Add(customTileSource);
}
public InvertMaskMapTileSource(Geopath path, Color colorIn, Color colorOut) : base()
{
Path = path;
ColorIn = colorIn;
ColorOut = colorOut;
var dataSource = new CustomMapTileDataSource();
dataSource.BitmapRequested += BitmapRequested;
DataSource = dataSource;
}
public MainPage()
{
this.InitializeComponent();
CustomMapTileDataSource customDataSource = new CustomMapTileDataSource();
// Attach a handler for the BitmapRequested event.
customDataSource.BitmapRequested += customDataSource_BitmapRequestedAsync;
MapTileSource customTileSource = new MapTileSource(customDataSource);
myMap.TileSources.Add(customTileSource);
// Customize component
customTileSource.Layer = MapTileLayer.BackgroundReplacement;
customTileSource.IsFadingEnabled = false;
myMap.Style = MapStyle.None;
myMap.MapProjection = MapProjection.WebMercator;
}
void BitmapRequested(CustomMapTileDataSource sender, MapTileBitmapRequestedEventArgs args)
{
var deferral = args.Request.GetDeferral();
IRandomAccessStreamReference referenceStream;
double lat, lon = 0;
int pixelX, pixelY = 0;
Microsoft.MapPoint.TileSystem.TileXYToPixelXY(args.X, args.Y, out pixelX, out pixelY);
Microsoft.MapPoint.TileSystem.PixelXYToLatLong(pixelX, pixelY, args.ZoomLevel, out lat, out lon);
BasicGeoposition northWest = new BasicGeoposition {
Latitude = lat, Longitude = lon
};
Microsoft.MapPoint.TileSystem.PixelXYToLatLong(pixelX + (int)sizeOfMapTile, pixelY + (int)sizeOfMapTile, args.ZoomLevel, out lat, out lon);
BasicGeoposition southEast = new BasicGeoposition {
Latitude = lat, Longitude = lon
};
GeoboundingBox tileBox = new GeoboundingBox(northWest, southEast);
if (tileBox.CollidesWith(PathBox))
{
if (PathCache.pointInPolygon(northWest.Longitude, northWest.Latitude) &&
PathCache.pointInPolygon(southEast.Longitude, southEast.Latitude) &&
PathCache.pointInPolygon(northWest.Longitude, southEast.Latitude) &&
PathCache.pointInPolygon(southEast.Longitude, northWest.Latitude))
{
referenceStream = RandomAccessStreamReference.CreateFromStream(InTile);
}
else
{
var cutter = new Windows.Storage.Streams.InMemoryRandomAccessStream();
cutTile(cutter, pixelX, pixelY, args.ZoomLevel);
referenceStream = RandomAccessStreamReference.CreateFromStream(cutter);
}
}
else
{
referenceStream = RandomAccessStreamReference.CreateFromStream(OutTile);
}
args.Request.PixelData = referenceStream;
deferral.Complete();
}
private void CustTileSource_Checked(object sender, RoutedEventArgs e)
{
var customSource = new CustomMapTileDataSource();
customSource.BitmapRequested += async(o, args) =>
{
var deferral = args.Request.GetDeferral();
args.Request.PixelData = await CreateBitmapAsStreamAsync();
deferral.Complete();
};
var ts = new MapTileSource(customSource)
{
Layer = MapTileLayer.BackgroundOverlay,
IsTransparencyEnabled = true,
};
map1.TileSources.Add(ts);
}
private async void BitmapRequestedHandler(CustomMapTileDataSource sender, MapTileBitmapRequestedEventArgs args)
{
var deferral = args.Request.GetDeferral();
try
{
using (var imgStream = await GetTileAsStreamAsync(args.X, args.Y, args.ZoomLevel))
{
var memStream = imgStream.AsRandomAccessStream();
var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(memStream);
var pixelProvider = await decoder.GetPixelDataAsync(Windows.Graphics.Imaging.BitmapPixelFormat.Rgba8, Windows.Graphics.Imaging.BitmapAlphaMode.Straight, new Windows.Graphics.Imaging.BitmapTransform(), Windows.Graphics.Imaging.ExifOrientationMode.RespectExifOrientation, Windows.Graphics.Imaging.ColorManagementMode.ColorManageToSRgb);
var pixels = pixelProvider.DetachPixelData();
var width = decoder.OrientedPixelWidth;
var height = decoder.OrientedPixelHeight;
Parallel.For(0, height, i =>
{
for (int j = 0; j <= width - 1; j++)
{
// Alpha channel Index (RGBA)
var idx = (i * height + j) * 4 + 3;
}
});
var randomAccessStream = new InMemoryRandomAccessStream();
var outputStream = randomAccessStream.GetOutputStreamAt(0);
var writer = new DataWriter(outputStream);
writer.WriteBytes(pixels);
await writer.StoreAsync();
await writer.FlushAsync();
args.Request.PixelData = RandomAccessStreamReference.CreateFromStream(randomAccessStream);
}
}
catch
{
}
deferral.Complete();
}
private void CustTileSource_Checked(object sender, RoutedEventArgs e)
{
var customSource = new CustomMapTileDataSource();
customSource.BitmapRequested += async (o, args) =>
{
var deferral = args.Request.GetDeferral();
args.Request.PixelData = await CreateBitmapAsStreamAsync();
deferral.Complete();
};
var ts = new MapTileSource(customSource)
{
Layer = MapTileLayer.BackgroundOverlay,
IsTransparencyEnabled = true,
};
map1.TileSources.Add(ts);
}
public CustomMapTileDataSourceEvents(CustomMapTileDataSource This)
{
this.This = This;
}
