Chinese characters cannot be displayed

[zenglei286]

[zenglei286]

TextFragment.cs
public override void OnRender(DrawingContext drawingContext, Rect bounds)
{
if (Length == 0)
return;

        GlyphTypeface glyphTypeface = View.Content.GlyphTypeface;
        var list = ToString().ToList();
        Length = list.Count;
        var gg = new ushort[list.Count];
        double charWidth = View.Content.CharWidth;
        var advanceWidths = new double[Length];

        for (int i = 0; i < list.Count; i++)
        {
            char ch = list[i];
            try
            {
                var glyphIndex = glyphTypeface.CharacterToGlyphMap[ch];
                gg[i] = glyphIndex;
                if (Encoding.GetByteCount(ch.ToString()) > 1)
                {
                    advanceWidths[i] = charWidth * 2;
                }
                else
                {
                    advanceWidths[i] = charWidth;
                }
            }
            catch (Exception)
            {
                gg[i] = ch;
                advanceWidths[i] = charWidth;
            }
        }

// var glyphIndices = View.Content.GetGlyphIndices(Data, Offset, Length);
//byte[] bytes = glyphIndices.Select(m => (byte)m).ToArray();

        double fontSize = View.Content.LineHeight - 2; // keep padding
        var baseline = new Point(0, View.Content.SnapToPixelsY(glyphTypeface.Baseline * fontSize + 1.5, ceiling: true));


        GlyphRun run = new GlyphRun(glyphTypeface,
                        bidiLevel: 0,
                        isSideways: false,
                        renderingEmSize: fontSize,
                        glyphIndices: gg,
                        baselineOrigin: baseline,
                        advanceWidths: advanceWidths,
                        glyphOffsets: null,
                        characters: null,
                        deviceFontName: null,
                        clusterMap: null,
                        caretStops: null,
                        language: null);

        drawingContext.PushTransform(new TranslateTransform(bounds.X, bounds.Y));
        drawingContext.DrawGlyphRun(Brush, run);
        drawingContext.Pop();
    }