v0.97 : ToAdjustContents() crash on Azure pipeline.

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Do you want to request a feature or report a bug?

• Bug
• Feature
• Question

Did you test against the latest CI build?

• Yes
• No

If you answered No, please test with the latest development build first.

Version of ClosedXML

0.97.0

What is the current behavior?

Hi, I have a unit test executing using ToAdjustContents method. This unit test is OK when I run it on local. When deployed to azure pipeline, I have the following error:

Error Message: System.ArgumentException : Unable to find font Calibri or fallback font Microsoft Sans Serif. Install missing fonts or specify a different fallback font through 'LoadOptions.DefaultGraphicEngine = new DefaultGraphicEngine("Fallback font name")'. Stack Trace: at ClosedXML.Graphics.DefaultGraphicEngine.LoadFont(MetricId metricId) at System.Collections.Concurrent.ConcurrentDictionary2.GetOrAdd(TKey key, Func2 valueFactory) at ClosedXML.Graphics.DefaultGraphicEngine.GetFont(MetricId metricId) at ClosedXML.Graphics.DefaultGraphicEngine.GetFont(IXLFontBase fontBase) at ClosedXML.Graphics.DefaultGraphicEngine.GetTextWidth(String text, IXLFontBase fontBase, Double dpiX) at ClosedXML.Excel.XLColumn.GetWidthInCharacters(String text, IXLFontBase font) at ClosedXML.Excel.XLColumn.AdjustToContents(Int32 startRow, Int32 endRow, Double minWidth, Double maxWidth) at ClosedXML.Excel.XLColumn.AdjustToContents(Int32 startRow, Int32 endRow) at ClosedXML.Excel.XLColumn.AdjustToContents(Int32 startRow) at ClosedXML.Excel.XLColumn.AdjustToContents() at ClosedXML.Excel.XLColumns.<>c.<AdjustToContents>b__13_0(XLColumn c) at ClosedXML.Excel.EnumerableExtensions.ForEach[T](IEnumerable1 source, Action1 action) at ClosedXML.Excel.XLColumns.AdjustToContents()

The issue appeared on release 0.97. It works fine on release 0.96.

What is the expected behavior or new feature?

Same behaviour as previous release.

Is this a regression from the previous version?

Yes.

Reproducibility

This is an important section. Read it carefully. Failure to do so will cause a ‘RTFM’ comment. Code to reproduce problem: The code looks like this:

public void Main()
{
`            var workbook = new XLWorkbook();
            IXLWorksheet worksheet = workbook.AddWorksheet(ExcelExportSheetName);

            IXLRow headerRow = worksheet.Row(1);
            row.Cell("A").SetValue("data1");
            row.Cell("B").SetValue("data2");
            ...
            row.Cell("AB").SetValue("dataN");

            worksheet.Columns("Z").AdjustToContents();

            for (int i = 0; i < orders.Count; i++)
            {
                var rowNumber = i + HeaderRowNumber + ExcelIndexOffset;
                IXLRow xlRow = worksheet.Row(rowNumber);
                xlRow.Cell("A").SetValue("some data");
                ...
                xlRow.Cell("AB").SetValue("some data");
            }
            worksheet.Columns("A:Y").AdjustToContents();
            worksheet.Columns("AA:AB").AdjustToContents();
`
}

[jHabjanMXP]

If someone else is checking why this crashes on Linux distros. I did it like this:

/// <summary>
/// If runtime platform is not Windows, we have to set graphics engine fallback font in order
/// for AdjustToContents to work.
/// We're setting preferred font to DejaVu Sans, which is available on most linux distros. If not, we're
/// falling back to first available font.
/// </summary>
private static void UpdateGraphicsEngineFonts()
{
    bool isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
    if (isWindows) return;

    // https://github.com/ClosedXML/ClosedXML/releases/tag/0.97.0
    const string preferredFont = "DejaVu Sans";
    List<string> fonts = SystemFonts.Collection.Families.Select(f => f.Name).ToList();

    // If the preferred font is not available, use the first available font
    var fontName = fonts.Contains(preferredFont) ? preferredFont : fonts.First();

    // All workbooks created later will use the engine with a fallback font DejaVu Sans
    // (or the first available font)
    LoadOptions.DefaultGraphicEngine = new DefaultGraphicEngine(fontName);
}

And call UpdateGraphicsEngineFonts() BEFORE creating a workbook with using XLWorkbook workbook = new();.

[etiennejy]

Thanks !

It works by adding: LoadOptions.DefaultGraphicEngine = new DefaultGraphicEngine("DejaVu Sans");