GroupDocs.Viewer for .NET 20.10 Release Notes

/// <summary>
/// Corel Exchange (.cmx) is a drawing image file that may contain vector graphics as well as bitmap graphics.
/// Learn more about this file format <a href="https://docs.fileformat.com/image/cmx">here</a>.
/// </summary>
public static readonly FileType CMX = new FileType("Corel Metafile exchange", ".cmx");

/// <summary>
/// Enhanced Windows Metafile compressed (.emz) represents graphical images device-independently compressed by GZIP. Metafiles of EMF comprises of variable-length records in chronological order that can render the stored image after parsing on any output device.
/// Learn more about this file format <a href="https://docs.fileformat.com/image/emz">here</a>.
/// </summary>

public static readonly FileType EMZ = new FileType("Windows Compressed Enhanced Metafile", ".emz");

/// <summary>
/// Compressed Windows Metafile (.wmz) represents Microsoft Windows Metafile (WMF) compressed in GZIP archvive - for storing vector as well as bitmap-format images data.
/// Learn more about this file format <a href="https://docs.fileformat.com/image/wmz/">here</a>.
/// </summary>
public static readonly FileType WMZ = new FileType("Compressed Windows Metafile", ".wmz");

/// <summary>
/// Writes log messages to the console.
/// </summary>
public class ConsoleLogger : ILogger
{
    /// <summary>
    /// Writes a trace message to the console.
    /// Trace log messages provide generally useful information about application flow.
    /// </summary>
    /// <param name="message">The trace message.</param>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
    public void Trace(string message);

    /// <summary>
    /// Writes a warning message to the console.
    /// Warning log messages provide information about unexpected and recoverable events in application flow.
    /// </summary>
    /// <param name="message">The warning message.</param>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
    public void Warning(string message);


    /// <summary>
    /// Writes an error message to the console.
    /// Error log messages provide information about unrecoverable events in application flow.
    /// </summary>
    /// <param name="message">The error message.</param>
    /// <param name="exception">The exception.</param>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="exception"/> is null.</exception>
    public void Error(string message, Exception exception);

}

/// <summary>
/// Writes log messages to the file.
/// </summary>
public class FileLogger : ILogger
{
    /// <summary>
    /// Create logger to file.
    /// </summary>
    /// <param name="fileName">Full file name with path</param>
    public FileLogger(string fileName);

    /// <summary>
    /// Writes a trace message to the console.
    /// Trace log messages provide generally useful information about application flow.
    /// </summary>
    /// <param name="message">The trace message.</param>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
    public void Trace(string message);

    /// <summary>
    /// Writes a warning message to the console.
    /// Warning log messages provide information about unexpected and recoverable events in application flow.
    /// </summary>
    /// <param name="message">The warning message.</param>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
    public void Warning(string message);

    /// <summary>
    /// Writes an error message to the console.
    /// Error log messages provide information about unrecoverable events in application flow.
    /// </summary>
    /// <param name="message">The error message.</param>
    /// <param name="exception">The exception.</param>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
    /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="exception"/> is null.</exception>
    public void Error(string message, Exception exception);
}

    /// <summary>
    /// Defines the methods that are used to perform logging.
    /// </summary>
    public interface ILogger
    {
        /// <summary>
        /// Writes a trace message.
        /// Trace log messages provide generally useful information about application flow.
        /// </summary>
        /// <param name="message">The trace message.</param>
        /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
        void Trace(string message);

        /// <summary>
        /// Writes a warning message.
        /// Warning log messages provide information about unexpected and recoverable events in application flow.
        /// </summary>
        /// <param name="message">The warning message.</param>
        /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
        void Warning(string message);

        /// <summary>
        /// Writes an error message.
        /// Error log messages provide information about unrecoverable events in application flow.
        /// </summary>
        /// <param name="message">The error message.</param>
        /// <param name="exception">The exception.</param>
        /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="message"/> is null.</exception>
        /// <exception cref="System.ArgumentNullException">Thrown when <paramref name="exception"/> is null.</exception>
        void Error(string message, Exception exception);
    }

/// <summary>
/// The logger implementation used for logging (Errors, Warnings, Traces).
/// </summary>
public ILogger Logger { get; }

/// <summary>
/// Initializes new instance of <see cref="ViewerSettings"/> class.
/// </summary>
/// <param name="cache">The cache.</param>
/// <param name="logger">The logger.</param>
/// <exception cref="System.ArgumentNullException">Thrown when <paramref name="cache"/> is null.</exception>
public ViewerSettings(ICache cache, ILogger logger)