using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Interop;
using System.Windows.Media.Imaging;

namespace ShrlAlgoToolkit.Core.Assists;
public class ImageAssist
{
    /// <summary>
    /// 提取资源
    /// </summary>
    /// <param name="resourceName"></param>
    /// <param name="path"></param>
    public static void ExtractResource(string resourceName, string path)
    {
        using var manifestResourceStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName);
        using var stream = File.Create(path);
        var array = new byte[8192];
        int count;
        while ((count = manifestResourceStream.Read(array, 0, array.Length)) > 0)
        {
            stream.Write(array, 0, count);
        }
    }

    /// <summary>
    /// 资源管理器缩略图读取
    /// </summary>
    /// <param name="filename"></param>
    /// <param name="width"></param>
    /// <param name="height"></param>
    /// <returns></returns>
    public static BitmapSource LoadFileImage(string filename, int width, int height)
    {
        var bm = WindowsThumbnailProvider.GetThumbnail(filename, width, height, ThumbnailOptions.None);
        return Imaging.CreateBitmapSourceFromHBitmap(bm.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
    }
}