XFEWarframe

using System.Runtime.InteropServices.WindowsRuntime;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Media.Imaging;
using Windows.Graphics.Imaging;

namespace XFEWarframe.Desktop.Editing;

internal static class OverviewSnapshot
{
    internal static async Task SaveAsync(UIElement element, string path)
    {
        var bitmap = new RenderTargetBitmap();
        await bitmap.RenderAsync(element);
        var pixels = (await bitmap.GetPixelsAsync()).ToArray();
        using var file = File.Create(path);
        using var stream = file.AsRandomAccessStream();
        var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, stream);
        encoder.SetPixelData(BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied, (uint)bitmap.PixelWidth, (uint)bitmap.PixelHeight, 96, 96, pixels);
        await encoder.FlushAsync();
    }
}