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.PdfSharp.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;
+using PdfSharpCore.Drawing;
+
+namespace PdfSharpCore.Internal
+{
+    /// <summary>
+    /// Some static helper functions for calculations.
+    /// </summary>
+    internal static class Calc
+    {
+        /// <summary>
+        /// Degree to radiant factor.
+        /// </summary>
+        public const double Deg2Rad = Math.PI / 180;
+
+        ///// <summary>
+        ///// Half of pi.
+        ///// </summary>
+        //public const double πHalf = Math.PI / 2;
+        //// α - β κ
+
+        /// <summary>
+        /// Get page size in point from specified PageSize.
+        /// </summary>
+        public static XSize PageSizeToSize(PageSize value)
+        {
+            switch (value)
+            {
+                case PageSize.A0:
+                    return new XSize(2380, 3368);
+
+                case PageSize.A1:
+                    return new XSize(1684, 2380);
+
+                case PageSize.A2:
+                    return new XSize(1190, 1684);
+
+                case PageSize.A3:
+                    return new XSize(842, 1190);
+
+                case PageSize.A4:
+                    return new XSize(595, 842);
+
+                case PageSize.A6:
+                    return new XSize(298, 420);
+
+                case PageSize.A5:
+                    return new XSize(420, 595);
+
+                case PageSize.B4:
+                    return new XSize(729, 1032);
+
+                case PageSize.B5:
+                    return new XSize(516, 729);
+
+                // The strange sizes from overseas...
+
+                case PageSize.Letter:
+                    return new XSize(612, 792);
+
+                case PageSize.Legal:
+                    return new XSize(612, 1008);
+
+                case PageSize.Tabloid:
+                    return new XSize(792, 1224);
+
+                case PageSize.Ledger:
+                    return new XSize(1224, 792);
+
+                case PageSize.Statement:
+                    return new XSize(396, 612);
+
+                case PageSize.Executive:
+                    return new XSize(540, 720);
+
+                case PageSize.Folio:
+                    return new XSize(612, 936);
+
+                case PageSize.Quarto:
+                    return new XSize(610, 780);
+
+                case PageSize.Size10x14:
+                    return new XSize(720, 1008);
+            }
+            throw new ArgumentException("Invalid PageSize.");
+        }
+    }
+}