CLoseXML FOnts

Utils/ClosedXMLSetup.cs

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+
+using System.Diagnostics;
+using ClosedXML.Excel;
+using ClosedXML.Excel.Drawings;
+using ClosedXML.Graphics;
+
+namespace NejCommon.Utils;
+
+public class FakeGraphicsEngine : IXLGraphicEngine
+{
+    private static double PointsToPixels(double points, double dpi)
+    {
+        return points / 72.0 * dpi;
+    }
+    public double GetDescent(IXLFontBase font, double dpiY)
+    {
+        return PointsToPixels(font.FontSize, dpiY);
+    }
+
+    public GlyphBox GetGlyphBox(ReadOnlySpan<int> graphemeCluster, IXLFontBase font, Dpi dpi)
+    {
+        int num = graphemeCluster.ToArray().Sum();
+
+        double value = PointsToPixels(font.FontSize, dpi.X);
+        double value2 = PointsToPixels((double)num * font.FontSize, dpi.X);
+        return new GlyphBox(descent: (float)Math.Round(GetDescent(font, dpi.Y), MidpointRounding.AwayFromZero), advanceWidth: (float)Math.Round(value2, MidpointRounding.AwayFromZero), emSize: (float)Math.Round(value, MidpointRounding.AwayFromZero));
+
+    }
+
+    public double GetMaxDigitWidth(IXLFontBase font, double dpiX)
+    {
+        return PointsToPixels(font.FontSize, dpiX);
+    }
+
+    public XLPictureInfo GetPictureInfo(Stream imageStream, XLPictureFormat expectedFormat)
+    {
+        return DefaultGraphicEngine.Instance.Value.GetPictureInfo(imageStream, expectedFormat);
+    }
+
+    public double GetTextHeight(IXLFontBase font, double dpiY)
+    {
+        return PointsToPixels(font.FontSize, dpiY);
+    }
+
+    public double GetTextWidth(string text, IXLFontBase font, double dpiX)
+    {
+        return PointsToPixels(text?.Length ?? 0 * font.FontSize, dpiX);
+    }
+}
+
+public static class ClosedXMLSetup
+{
+    public static void Setup()
+    {
+        var font = GetFont();
+        if (font != null)
+        {
+            Console.WriteLine("ClosedXML: Using: " + font);
+            LoadOptions.DefaultGraphicEngine = new DefaultGraphicEngine(font);
+        }
+        else
+        {            
+            Console.WriteLine("ClosedXML: Using stub GE");
+            LoadOptions.DefaultGraphicEngine = new FakeGraphicsEngine();
+        }
+    }
+
+    static string GetFont()
+    {
+        foreach (var orderFont in new string[] { "Calibri", "Microsoft Sans Serif", "Carlito", "Liberation Sans" })
+        {
+            foreach (var fontFamily in SixLabors.Fonts.SystemFonts.Collection.Families)
+            {
+                if (fontFamily.Name == orderFont)
+                    return fontFamily.Name;
+            }
+        }
+        return null;
+    }
+}