public async Task <WriteableBitmap> ToWriteableBitmap()
{
WriteableBitmap result = null;
if (IsValid)
{
if (Source is WriteableBitmap)
{
result = Source as WriteableBitmap;
}
else if (Source is BitmapSource)
{
var bmp = Source as BitmapImage;
result = await bmp.ToWriteableBitmap();
}
else if (Source is SvgImageSource)
{
var svg = Source as SvgImageSource;
if (Bytes is byte[])
{
CanvasDevice device = CanvasDevice.GetSharedDevice();
var svgDocument = new CanvasSvgDocument(device);
svgDocument = CanvasSvgDocument.LoadFromXml(device, Encoding.UTF8.GetString(Bytes));
using (var offscreen = new CanvasRenderTarget(device, (float)svg.RasterizePixelWidth, (float)svg.RasterizePixelHeight, 96))
{
var session = offscreen.CreateDrawingSession();
session.DrawSvg(svgDocument, new Size(Size, Size), 0, 0);
using (var imras = new InMemoryRandomAccessStream())
{
await offscreen.SaveAsync(imras, CanvasBitmapFileFormat.Png);
result = await imras.ToWriteableBitmap();
}
}
}
}
}
return(result);
}