vendor: import KillerPDF 1.7.5 source (GPL-3.0) as the base for MMD PDF

2026-08-27 06:58:22 +02:00
commit 532485a830
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+#region PDFsharp - A .NET library for processing PDF
+//
+// Authors:
+//   Stefan Lange
+//
+// Copyright (c) 2005-2016 empira Software GmbH, Cologne Area (Germany)
+//
+// http://www.PdfSharpCore.com
+// http://sourceforge.net/projects/pdfsharp
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+// DEALINGS IN THE SOFTWARE.
+#endregion
+
+using System.Collections.Generic;
+
+namespace PdfSharpCore.Pdf.Advanced
+{
+    /// <summary>
+    /// Base class for all dictionaries that map resource names to objects.
+    /// </summary>
+    internal class PdfResourceMap : PdfDictionary //, IEnumerable
+    {
+        public PdfResourceMap()
+        { }
+
+        public PdfResourceMap(PdfDocument document)
+            : base(document)
+        { }
+
+        protected PdfResourceMap(PdfDictionary dict)
+            : base(dict)
+        { }
+
+        //    public int Count
+        //    {
+        //      get {return resources.Count;}
+        //    }
+        //
+        //    public PdfObject this[string key]
+        //    {
+        //      get {return resources[key] as PdfObject;}
+        //      set {resources[key] = value;}
+        //    }
+
+        /// <summary>
+        /// Adds all imported resource names to the specified hashtable.
+        /// </summary>
+        internal void CollectResourceNames(Dictionary<string, object> usedResourceNames)
+        {
+            // ?TODO: Imported resources (e.g. fonts) can be reused, but I think this is rather difficult. Will be an issue in PDFsharp 2.0.
+            PdfName[] names = Elements.KeyNames;
+            foreach (PdfName name in names)
+                usedResourceNames.Add(name.ToString(), null);
+        }
+    }
+}