3rdpartylibs/fastreports.wpf/FastReport.BaseExt/Fonts/TTFState.cs

using FastReport.Fonts;
using System;
using System.Drawing;

public class TTFState : IDisposable
{
    private bool disposedValue;

    public TTFState(Font source_font)
    {
        string fast_font =
             source_font.FontFamily.Name +
             (source_font.Bold ? "-B" : string.Empty) +
             (source_font.Italic ? "-I" : string.Empty);

        FastFontName = fast_font;
        SourceFont = source_font;
        Value = FastReport.Fonts.FontStreamPool.GetTTF(fast_font, source_font);
    }

    public TrueTypeFont Value { get; }
    public string FastFontName { get; }
    public Font SourceFont { get; }

    protected virtual void Dispose(bool disposing)
    {
        if (!disposedValue)
        {
            if (disposing)
            {
                FastReport.Fonts.FontStreamPool.ReleaseFontStream(Value);
            }

            // TODO: set large fields to null
            disposedValue = true;
        }
    }

    // // TODO: override finalizer only if 'Dispose(bool disposing)' has code to free unmanaged resources
    // ~TTFState()
    // {
    //     // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
    //     Dispose(disposing: false);
    // }

    public void Dispose()
    {
        // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
        Dispose(disposing: true);
        GC.SuppressFinalize(this);
    }
}