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;
+
+namespace PdfSharpCore.Pdf.AcroForms
+{
+    /// <summary>
+    /// Represents the combo box field.
+    /// </summary>
+    public sealed class PdfComboBoxField : PdfChoiceField
+    {
+        /// <summary>
+        /// Initializes a new instance of PdfComboBoxField.
+        /// </summary>
+        internal PdfComboBoxField(PdfDocument document)
+            : base(document)
+        { }
+
+        internal PdfComboBoxField(PdfDictionary dict)
+            : base(dict)
+        { }
+
+        /// <summary>
+        /// Gets or sets the index of the selected item.
+        /// </summary>
+        public int SelectedIndex
+        {
+            get
+            {
+                string value = Elements.GetString(Keys.V);
+                return IndexInOptArray(value);
+            }
+            set
+            {
+                // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx		  
+                if (value != -1) //R080325
+                {
+                    string key = ValueInOptArray(value);
+                    Elements.SetString(Keys.V, key);
+                    Elements.SetInteger("/I", value); //R080304 !!!!!!! sonst reagiert die Combobox überhaupt nicht !!!!!
+                }
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets the value of the field.
+        /// </summary>
+        // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx		  
+        public override PdfItem Value //R080304
+        {
+            get { return Elements[Keys.V]; }
+            set
+            {
+                if (ReadOnly)
+                    throw new InvalidOperationException("The field is read only.");
+                if (value is PdfString || value is PdfName)
+                {
+                    Elements[Keys.V] = value;
+                    SelectedIndex = SelectedIndex; //R080304 !!!
+                    if (SelectedIndex == -1)
+                    {
+                        //R080317 noch nicht rund
+                        try
+                        {
+                            //anhängen
+                            ((PdfArray)(((PdfItem[])(Elements.Values))[2])).Elements.Add(Value);
+                            SelectedIndex = SelectedIndex;
+                        }
+                        catch { }
+                    }
+                }
+                else
+                    throw new NotImplementedException("Values other than string cannot be set.");
+            }
+        }
+
+        /// <summary>
+        /// Predefined keys of this dictionary. 
+        /// The description comes from PDF 1.4 Reference.
+        /// </summary>
+        public new class Keys : PdfAcroField.Keys
+        {
+            // Combo boxes have no additional entries.
+
+            internal static DictionaryMeta Meta
+            {
+                get
+                {
+                    if (Keys._meta == null)
+                        Keys._meta = CreateMeta(typeof(Keys));
+                    return Keys._meta;
+                }
+            }
+            static DictionaryMeta _meta;
+        }
+
+        /// <summary>
+        /// Gets the KeysMeta of this dictionary type.
+        /// </summary>
+        internal override DictionaryMeta Meta
+        {
+            get { return Keys.Meta; }
+        }
+    }
+}