Feature/pdfheadings

src/EPPlus.DrawingRenderer.Tests/Chart/LineChartToSvgTests.cs

@@ -129,7 +129,7 @@ public void GenerateSvgForLineCharts()
             }
         }
         [TestMethod]
-        public void GenerateSvgForLineCharts2()
+        public void GenerateSuperScript()
         {
             ExcelPackage.License.SetNonCommercialOrganization("EPPlus Project");
             using (var p = OpenTemplatePackage("Superscript.xlsx"))

src/EPPlus.Export.Pdf.Tests/EPPlus.Export.Pdf.Tests.csproj

@@ -18,6 +18,7 @@
   <ItemGroup>
     <ProjectReference Include="..\..\..\EPPlus\src\EPPlusTest\EPPlus.Test.csproj" />
     <ProjectReference Include="..\EPPlus.Export.Pdf\EPPlus.Export.Pdf.csproj" />
+    <ProjectReference Include="..\EPPlus\EPPlus.csproj" />
   </ItemGroup>
 
   <ItemGroup>

src/EPPlus.Export.Pdf/AssemblyInfo.cs

@@ -12,6 +12,7 @@ Date               Author                       Change
  *************************************************************************************************/
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Security;
 
 // In SDK-style projects such as this one, several assembly attributes that were historically
 // defined in this file are now automatically added during build and populated with
@@ -26,6 +27,9 @@ Date               Author                       Change
 [assembly: ComVisible(false)]
 
 // The following GUID is for the ID of the typelib if this project is exposed to COM.
-
+[assembly: AllowPartiallyTrustedCallers]
 [assembly: Guid("60855b7d-19da-4dfa-90b2-78231d227d65")]
-[assembly: InternalsVisibleTo("EPPlus.Export.Pdf.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100dd3a3466a88cbf5d374fe992cec433c48022414fe96608933e8e36782001213dd31bc454dc6f962a54a3a76cfb9e03a32cd4c658ecd49d1a98709971a080ab92d5c5b65346155f8d6422db4ffbf662f78913996a9a8b78ee11ff3cda7e585208cd4468fb3201f15bbb1dfc45c120703c9d6ad495bb9de66893ae5ab5ac8f40dc")]
+[assembly: InternalsVisibleTo("EPPlus, PublicKey=00240000048000009400000006020000002400005253413100040000010001002981343969ed86fe604c56a84c61e33109424ef07bb458ff12e9533c11ea23ac8ef7e014b2a2de4ceb5f7528f963c755fe9b32f09cc35d21de94319d2a952a6e663cd46d6d98465998c77b52093d4f17cdc20ec054751244696f08afa6f4417d85267b147b73b6a3f5e9015b9dfd3dcc3328ce63df53a7c08a5544c1526ea5a5")]
+[assembly: InternalsVisibleTo("EPPlus.Export.Pdf.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100dd3a3466a88cbf5d374fe992cec433c48022414fe96608933e8e36782001213dd31bc454dc6f962a54a3a76cfb9e03a32cd4c658ecd49d1a98709971a080ab92d5c5b65346155f8d6422db4ffbf662f78913996a9a8b78ee11ff3cda7e585208cd4468fb3201f15bbb1dfc45c120703c9d6ad495bb9de66893ae5ab5ac8f40dc")]
+// 
+[assembly: InternalsVisibleTo("EPPlus.PdfExportPerformance, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f5398d389a44aacee243c9e73152fae942e9ede958ebd4b06651a749e6b2c0395a66bc0fc133dce1cf83cd667fe8f761b433063e603968f12b0b17e474233410f8fe933853d2344e89526414ef65ed7236a7a5c012e30275ec30d7fb665dbe1bd3435439bec55f431b9e69e943294fd474942d6bcb431c94ef653cbeee5b8a9e")]

src/EPPlus.Export.Pdf/DocumentObjects/ExcelPatternMask.cs

@@ -0,0 +1,307 @@
+/*************************************************************************************************
+  Required Notice: Copyright (C) EPPlus Software AB. 
+  This software is licensed under PolyForm Noncommercial License 1.0.0 
+  and may only be used for noncommercial purposes 
+  https://polyformproject.org/licenses/noncommercial/1.0.0/
+
+  A commercial license to use this software can be purchased at https://epplussoftware.com
+ *************************************************************************************************
+  Date               Author                       Change
+ *************************************************************************************************
+  27/11/2025         EPPlus Software AB           EPPlus 9
+ *************************************************************************************************/
+using System.Collections.Generic;
+
+namespace EPPlus.Export.Pdf.DocumentObjects
+{
+    /// <summary>
+    /// The cell fill pattern types EPPlus renders in the PDF export, matching
+    /// the names of OfficeOpenXml.Style.ExcelFillStyle. The pattern geometry is
+    /// taken from how Microsoft Excel itself rasterises each pattern when it
+    /// exports to PDF (an 8x8 tile), NOT from the ECMA-376 ST_Shd masks. Excel
+    /// and ST_Shd only overlap for a few patterns; since the goal is visual
+    /// parity with Excel, Excel's own output is the reference.
+    /// </summary>
+    internal enum ExcelPatternMask
+    {
+        DarkGray,
+        MediumGray,
+        LightGray,
+        Gray125,
+        Gray0625,
+        DarkHorizontal,
+        DarkVertical,
+        DarkDown,
+        DarkUp,
+        DarkGrid,
+        DarkTrellis,
+        LightHorizontal,
+        LightVertical,
+        LightDown,
+        LightUp,
+        LightGrid,
+        LightTrellis,
+    }
+
+    /// <summary>
+    /// Reference catalog of the 8x8 cell fill pattern masks, transcribed from the
+    /// bitmaps Microsoft Excel produces when exporting each pattern fill to PDF.
+    ///
+    /// IMPORTANT - polarity and orientation:
+    ///
+    ///   byte 1 == background == the cell fill background color.
+    ///   byte 0 == foreground == the pattern color.
+    ///
+    /// So it is the 0 cells that get painted with the foreground/pattern color,
+    /// matching the convention used by the ECMA ST_Shd reference data.
+    ///
+    /// Row order matches the source bitmap exactly: row 0 is the TOP row. PDF
+    /// content streams have the origin at the bottom-left with y increasing
+    /// upward, so any comparison against rendered PDF output (or generation of a
+    /// PDF content stream) must mirror in y (row r maps to PDF y = 7 - r). That
+    /// y-flip is intentionally NOT applied here - the data is kept in bitmap
+    /// orientation and the flip is the responsibility of the render/diff step.
+    /// </summary>
+    internal static class ExcelPatternMaskData
+    {
+        private static readonly Dictionary<ExcelPatternMask, byte[,]> _masks = BuildMasks();
+
+        /// <summary>
+        /// Gets the 8x8 reference mask for the given pattern.
+        /// Indexed as [row, column] with row 0 = top, matching the source bitmap.
+        /// </summary>
+        /// <param name="pattern">The pattern to look up.</param>
+        /// <returns>An 8x8 matrix where 1 = background and 0 = foreground.</returns>
+        public static byte[,] GetMask(ExcelPatternMask pattern)
+        {
+            return _masks[pattern];
+        }
+
+        private static Dictionary<ExcelPatternMask, byte[,]> BuildMasks()
+        {
+            var masks = new Dictionary<ExcelPatternMask, byte[,]>();
+
+            // DarkGray (75 gray)
+            masks.Add(ExcelPatternMask.DarkGray, new byte[,]
+            {
+                { 0, 1, 0, 1, 0, 1, 0, 1 },
+                { 1, 0, 1, 0, 1, 0, 1, 0 },
+                { 0, 1, 0, 1, 0, 1, 0, 1 },
+                { 1, 0, 1, 0, 1, 0, 1, 0 },
+                { 0, 1, 0, 1, 0, 1, 0, 1 },
+                { 1, 0, 1, 0, 1, 0, 1, 0 },
+                { 0, 1, 0, 1, 0, 1, 0, 1 },
+                { 1, 0, 1, 0, 1, 0, 1, 0 },
+            });
+
+            // MediumGray (50 gray)
+            masks.Add(ExcelPatternMask.MediumGray, new byte[,]
+            {
+                { 0, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 0, 1, 1, 1, 0, 1 },
+                { 0, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 0, 1, 1, 1, 0, 1 },
+                { 0, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 0, 1, 1, 1, 0, 1 },
+                { 0, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 0, 1, 1, 1, 0, 1 },
+            });
+
+            // LightGray (25 gray)
+            masks.Add(ExcelPatternMask.LightGray, new byte[,]
+            {
+                { 0, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 0, 1, 1, 1, 0, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 0, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 0, 1, 1, 1, 0, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+            });
+
+            // Gray125 (12,5 gray)
+            masks.Add(ExcelPatternMask.Gray125, new byte[,]
+            {
+                { 0, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 0, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+            });
+
+            // Gray0625 (6,25 gray)
+            masks.Add(ExcelPatternMask.Gray0625, new byte[,]
+            {
+                { 0, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 0, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+            });
+
+            // DarkHorizontal (Horizontal stripe)
+            masks.Add(ExcelPatternMask.DarkHorizontal, new byte[,]
+            {
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+            });
+
+            // DarkVertical (Vertical stripe)
+            masks.Add(ExcelPatternMask.DarkVertical, new byte[,]
+            {
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+            });
+
+            // DarkDown (Reverse diagonal stripe)
+            masks.Add(ExcelPatternMask.DarkDown, new byte[,]
+            {
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 1, 0, 0, 0, 0, 1, 1, 1 },
+                { 1, 1, 0, 0, 0, 0, 1, 1 },
+                { 1, 1, 1, 0, 0, 0, 0, 1 },
+                { 1, 1, 1, 1, 0, 0, 0, 0 },
+                { 0, 1, 1, 1, 1, 0, 0, 0 },
+                { 0, 0, 1, 1, 1, 1, 0, 0 },
+                { 0, 0, 0, 1, 1, 1, 1, 0 },
+            });
+
+            // DarkUp (Diagonal stripe)
+            masks.Add(ExcelPatternMask.DarkUp, new byte[,]
+            {
+                { 1, 1, 0, 0, 0, 0, 1, 1 },
+                { 1, 0, 0, 0, 0, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 1, 1, 1, 1, 0 },
+                { 0, 0, 1, 1, 1, 1, 0, 0 },
+                { 0, 1, 1, 1, 1, 0, 0, 0 },
+                { 1, 1, 1, 1, 0, 0, 0, 0 },
+                { 1, 1, 1, 0, 0, 0, 0, 1 },
+            });
+
+            // DarkGrid (Diagonal crosshatch)
+            masks.Add(ExcelPatternMask.DarkGrid, new byte[,]
+            {
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 0, 0, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 0, 0, 0, 0 },
+                { 1, 1, 1, 1, 0, 0, 0, 0 },
+                { 1, 1, 1, 1, 0, 0, 0, 0 },
+                { 1, 1, 1, 1, 0, 0, 0, 0 },
+            });
+
+            // DarkTrellis (Thick diagonal crosshatch)
+            masks.Add(ExcelPatternMask.DarkTrellis, new byte[,]
+            {
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 1, 0, 0, 0, 0, 0, 0, 1 },
+                { 1, 1, 0, 0, 0, 0, 1, 1 },
+                { 1, 0, 0, 0, 0, 0, 0, 1 },
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 0, 0, 0, 1, 1, 0, 0, 0 },
+                { 0, 0, 1, 1, 1, 1, 0, 0 },
+                { 0, 0, 0, 1, 1, 0, 0, 0 },
+            });
+
+            // LightHorizontal (Thin horizontal stripe)
+            masks.Add(ExcelPatternMask.LightHorizontal, new byte[,]
+            {
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+                { 1, 1, 1, 1, 1, 1, 1, 1 },
+            });
+
+            // LightVertical (Thin vertical stripe)
+            masks.Add(ExcelPatternMask.LightVertical, new byte[,]
+            {
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+            });
+
+            // LightDown (Thin reverse diagonal stripe)
+            masks.Add(ExcelPatternMask.LightDown, new byte[,]
+            {
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 1, 0, 0, 1, 1, 1, 1, 1 },
+                { 1, 1, 0, 0, 1, 1, 1, 1 },
+                { 1, 1, 1, 0, 0, 1, 1, 1 },
+                { 1, 1, 1, 1, 0, 0, 1, 1 },
+                { 1, 1, 1, 1, 1, 0, 0, 1 },
+                { 1, 1, 1, 1, 1, 1, 0, 0 },
+                { 0, 1, 1, 1, 1, 1, 1, 0 },
+            });
+
+            // LightUp (Thin diagonal stripe)
+            masks.Add(ExcelPatternMask.LightUp, new byte[,]
+            {
+                { 1, 1, 1, 0, 0, 1, 1, 1 },
+                { 1, 1, 0, 0, 1, 1, 1, 1 },
+                { 1, 0, 0, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 1, 1, 1, 1, 1, 1, 0 },
+                { 1, 1, 1, 1, 1, 1, 0, 0 },
+                { 1, 1, 1, 1, 1, 0, 0, 1 },
+                { 1, 1, 1, 1, 0, 0, 1, 1 },
+            });
+
+            // LightGrid (Thin horizontal crosshatch)
+            masks.Add(ExcelPatternMask.LightGrid, new byte[,]
+            {
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 0, 0, 0, 0, 0, 0, 0, 0 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+                { 0, 0, 1, 1, 1, 1, 1, 1 },
+            });
+
+            // LightTrellis (Thin diagonal crosshatch)
+            masks.Add(ExcelPatternMask.LightTrellis, new byte[,]
+            {
+                { 0, 0, 1, 0, 0, 1, 1, 1 },
+                { 1, 0, 0, 0, 1, 1, 1, 1 },
+                { 1, 0, 0, 0, 1, 1, 1, 1 },
+                { 0, 0, 1, 0, 0, 1, 1, 1 },
+                { 0, 1, 1, 1, 0, 0, 1, 0 },
+                { 1, 1, 1, 1, 1, 0, 0, 0 },
+                { 1, 1, 1, 1, 1, 0, 0, 0 },
+                { 0, 1, 1, 1, 0, 0, 1, 0 },
+            });
+            return masks;
+        }
+    }
+}

src/EPPlus.Export.Pdf/PdfObjects/PdfFonts/CIDSystemInfo.cs → src/EPPlus.Export.Pdf/DocumentObjects/Fonts/CIDSystemInfo.cs

@@ -10,8 +10,7 @@ Date               Author                       Change
  *************************************************************************************************
   27/11/2025         EPPlus Software AB           EPPlus 9
  *************************************************************************************************/
-
-namespace EPPlus.Export.Pdf.PdfObjects.PdfFonts
+namespace EPPlus.Export.Pdf.DocumentObjects.Fonts
 {
     internal class CIDSystemInfo
     {

src/EPPlus.Export.Pdf/PdfObjects/PdfFonts/PdfCIDFont.cs → src/EPPlus.Export.Pdf/DocumentObjects/Fonts/PdfCIDFont.cs

@@ -17,9 +17,9 @@ Date               Author                       Change
 using System.Linq;
 using System.Text;
 
-namespace EPPlus.Export.Pdf.PdfObjects.PdfFonts
+namespace EPPlus.Export.Pdf.DocumentObjects.Fonts
 {
-    public enum CIDFontSubtype
+    internal enum CIDFontSubtype
     {
         CIDFontType0,
         CIDFontType2
@@ -70,7 +70,6 @@ internal override string RenderDictionary()
             }
             if (Gids != null)
             {
-                //var widthsStr = string.Join(" ", W.Select(w => w.ToString()).ToArray());
                 sb.AppendFormat($"\n    /W [{BuildWidthsArray()}]");
             }
             if (DW2 != null)
@@ -107,7 +106,6 @@ internal override void RenderDictionary(BinaryWriter bw)
             }
             if (Gids != null)
             {
-                //var widthsStr = string.Join(" ", W.Select(w => w.ToString()).ToArray());
                 sb.AppendFormat($"\n    /W [ {BuildWidthsArray()} ]");
             }
             if (DW2 != null)
@@ -134,7 +132,6 @@ private string BuildWidthsArray()
         {
             var sortedGids = Gids.OrderBy(g => g).ToList();
             var sb = new StringBuilder();
-
             int i = 0;
             while (i < sortedGids.Count)
             {