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
577 changed files with 149058 additions and 0 deletions
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+using PdfSharpCore.Pdf.Advanced;
+using System;
+
+namespace PdfSharpCore.Pdf.Annotations
+{
+    /// <summary>
+    /// Represent a file that is attached to the PDF
+    /// </summary>
+    public class PdfFileAttachmentAnnotation : PdfAnnotation
+    {
+        /// <summary>
+        /// Name of icons used in displaying the annotation.
+        /// </summary>
+        public enum IconType
+        {
+            Graph,
+            PushPin,
+            Paperclip,
+            Tag
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PdfFileAttachmentAnnotation"/> class.
+        /// </summary>
+        public PdfFileAttachmentAnnotation()
+        {
+            Elements.SetName(Keys.Subtype, "/FileAttachment");
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PdfFileAttachmentAnnotation"/> class.
+        /// </summary>
+        public PdfFileAttachmentAnnotation(PdfDocument document)
+          : base(document)
+        {
+            Elements.SetName(Keys.Subtype, "/FileAttachment");
+            Flags = PdfAnnotationFlags.Locked;
+        }
+
+        public IconType Icon
+        {
+            get
+            {
+                var iconName = Elements.GetName(Keys.Name);
+
+                if (iconName == null)
+                    return IconType.PushPin;
+
+                return (IconType)(Enum.Parse(typeof(IconType), iconName));
+            }
+            set { Elements.SetName(Keys.Name, value.ToString()); }
+        }
+
+        public PdfFileSpecification File
+        {
+            get
+            {
+                var reference = Elements.GetReference(Keys.FS);
+
+                return reference?.Value as PdfFileSpecification;
+            }
+            set
+            {
+                if (value == null)
+                {
+                    Elements.Remove(Keys.FS);
+                }
+                else
+                {
+                    if (!value.IsIndirect)
+                        Owner._irefTable.Add(value);
+
+                    Elements.SetReference(Keys.FS, value);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Predefined keys of this dictionary.
+        /// </summary>
+        internal new class Keys : PdfAnnotation.Keys
+        {
+            /// <summary>
+            /// (Required) The file associated with this annotation.
+            /// </summary>
+            [KeyInfo(KeyType.Dictionary | KeyType.Required)]
+            public const string FS = "/FS";
+
+            /// <summary>
+            /// (Optional) The name of an icon to be used in displaying the annotation. 
+            /// Viewer applications should provide predefined icon appearances for at least 
+            /// the following standard names:
+            /// 
+            /// Graph
+            /// PushPin
+            /// Paperclip
+            /// Tag
+            /// 
+            /// Additional names may be supported as well. Default value: PushPin.
+            /// Note: The annotation dictionary’s AP entry, if present, takes precedence over 
+            /// the Name entry; see Table 8.15 on page 606 and Section 8.4.4, “Appearance Streams.”
+            /// </summary>
+            [KeyInfo(KeyType.Name | KeyType.Optional)]
+            public const string Name = "/Name";
+
+            /// <summary>
+            /// Gets the KeysMeta for these keys.
+            /// </summary>
+            public 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; }
+        }
+    }
+}