private async Task DoRender(ScreenshotCallback callback)
{
var renderTargetBitmap = new RenderTargetBitmap();
await renderTargetBitmap.RenderAsync(AssociatedObject);
var pixelBuffer = await renderTargetBitmap.GetPixelsAsync();
var storageFile = await KnownFolders.SavedPictures.CreateFileAsync(string.Concat(Prefix, ".png"),
CreationCollisionOption.GenerateUniqueName);
using (var stream = await storageFile.OpenAsync(FileAccessMode.ReadWrite))
{
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();
if (callback != null)
{
callback(storageFile);
}
}
}
public ScreenshotMessage(ScreenshotCallback callback = null, object sender = null, object target = null)
: base(sender, target)
{
Callback = callback;
}
public ScreenshotMessage(ScreenshotCallback callback = null, object sender = null, object target = null) : base(sender, target)
{
Callback = callback;
}
