private async Task DoRender(ScreenshotToStreamCallback callback)
{
var renderTargetBitmap = new RenderTargetBitmap();
await renderTargetBitmap.RenderAsync(AssociatedObject);
var pixelBuffer = await renderTargetBitmap.GetPixelsAsync();
var stream = new InMemoryRandomAccessStream();
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, stream);
encoder.SetPixelData(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)renderTargetBitmap.PixelWidth,
(uint)renderTargetBitmap.PixelHeight, 96d, 96d,
pixelBuffer.ToArray());
await encoder.FlushAsync();
stream.Seek(0);
if (callback != null)
{
callback(stream);
}
}
public ScreenshotToStreamMessage(object sender = null, object target = null, ScreenshotToStreamCallback callback = null)
: base(sender, target)
{
Callback = callback;
}
public ScreenshotToStreamMessage(object sender = null, object target = null, ScreenshotToStreamCallback callback = null)
: base(sender, target)
{
Callback = callback;
}
