ShrlAlgoToolkit/ShrlAlgoToolkit.RevitAddins/Common/Assists/ImageAssist.cs

using System.Drawing;
using System.Drawing.Text;
using System.Globalization;
using System.IO;
using System.Reflection;
using System.Windows;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;

namespace ShrlAlgoToolkit.RevitAddins.Common.Assists;

public static 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>
    /// 资源的方式转换
    ///<c>var bitmap16 = ImageAssist.CreateIconBitmapSource(BoxIconFont.BxDownload, FontFamily, 16, Brushes.Black, 16, 16);</c>
    ///<c>var floorFinishesPbd = new PushButtonData(</c>
    ///<c>    "房间饰面",</c>
    ///<c>    "房间饰面",</c>
    ///<c>    Variables.AddInPath,</c>
    ///<c>    typeof(FloorFinishesCmd).FullName)</c>
    ///<c>{
    ///<c>    Image = bitmap16,</c>
    ///<c>    LargeImage = bitmap16,</c>
    ///<c>};</c>
    /// </summary>
    /// <param name="iconText"></param>
    /// <param name="fontFamily"></param>
    /// <param name="fontSize">字体大小</param>
    /// <param name="foreground">前景色</param>
    /// <param name="width">宽度</param>
    /// <param name="height">高度</param>
    /// <returns></returns>
    public static BitmapSource CreateIconBitmapSource(string iconText,
                                                      System.Windows.Media.FontFamily fontFamily,
                                                      double fontSize,
                                                      System.Windows.Media.Brush foreground,
                                                      double width,
                                                      double height)
    {
        var formattedText = new FormattedText(
            iconText,
            CultureInfo.InvariantCulture,
            FlowDirection.LeftToRight,
            new Typeface(fontFamily, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
            fontSize,
            foreground,
            1.0);

        var drawingVisual = new DrawingVisual();
        using (var drawingContext = drawingVisual.RenderOpen())
        {
            var x = (width - formattedText.Width) / 2;
            var y = (height - formattedText.Height) / 2;
            drawingContext.DrawText(formattedText, new System.Windows.Point(x, y));
        }

        var renderTarget = new RenderTargetBitmap((int)Math.Ceiling(width), (int)Math.Ceiling(height), 96, 96, PixelFormats.Pbgra32);
        renderTarget.Render(drawingVisual);
        return renderTarget;
    }

    /// <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());
    }
    /// <summary>
    /// 输出字体文件的方式转换
    /// </summary>
    /// <param name="fontPath">tff文件路径，如Fonts/boxicons.tff</param>
    /// <param name="unicodeChar">图标的unicode字符串</param>
    /// <param name="width"></param>
    /// <param name="height"></param>
    /// <returns></returns>
    public static Bitmap RenderIconFontToBitmap(string fontPath, string unicodeChar, int width, int height)
    {
        // 加载字体
        PrivateFontCollection fontCollection = new PrivateFontCollection();
        fontCollection.AddFontFile(fontPath);
        System.Drawing.FontFamily fontFamily = fontCollection.Families[0];

        // 创建位图
        Bitmap bitmap = new Bitmap(width, height);
        using (Graphics g = Graphics.FromImage(bitmap))
        {
            g.Clear(System.Drawing.Color.Transparent);
            using (Font font = new Font(fontFamily, Math.Min(width, height) / 2))
            {
                g.TextRenderingHint = TextRenderingHint.AntiAlias;
                StringFormat format = new StringFormat
                {
                    Alignment = StringAlignment.Center,
                    LineAlignment = StringAlignment.Center
                };
                g.DrawString(unicodeChar, font, System.Drawing.Brushes.Black, new RectangleF(0, 0, width, height), format);
            }
        }

        return bitmap;
    }

    
}