90 lines
3.2 KiB
C#
90 lines
3.2 KiB
C#
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#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Stefan Lange
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//
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// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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#if GDI
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using System.Drawing;
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using System.Drawing.Imaging;
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#endif
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#if WPF
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using System.Windows.Media;
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#endif
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namespace PdfSharp.Pdf.Advanced
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{
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/// <summary>
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/// Represents a PDF group XObject.
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/// </summary>
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public abstract class PdfGroupAttributes : PdfDictionary
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{
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internal PdfGroupAttributes(PdfDocument thisDocument)
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: base(thisDocument)
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{
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Elements.SetName(Keys.Type, "/Group");
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}
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/// <summary>
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/// Predefined keys of this dictionary.
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/// </summary>
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public class Keys : KeysBase
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{
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/// <summary>
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///(Optional) The type of PDF object that this dictionary describes;
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///if present, must be Group for a group attributes dictionary.
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/// </summary>
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[KeyInfo(KeyType.Name | KeyType.Optional)]
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public const string Type = "/Type";
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/// <summary>
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/// (Required) The group subtype, which identifies the type of group whose
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/// attributes this dictionary describes and determines the format and meaning
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/// of the dictionary<72>s remaining entries. The only group subtype defined in
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/// PDF 1.4 is Transparency. Other group subtypes may be added in the future.
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/// </summary>
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[KeyInfo(KeyType.Name | KeyType.Required)]
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public const string S = "/S";
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/// <summary>
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/// Gets the KeysMeta for these keys.
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/// </summary>
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internal static DictionaryMeta Meta
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{
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get { return _meta ?? (_meta = CreateMeta(typeof(Keys))); }
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}
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static DictionaryMeta _meta;
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}
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/// <summary>
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/// Gets the KeysMeta of this dictionary type.
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/// </summary>
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internal override DictionaryMeta Meta
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{
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get { return Keys.Meta; }
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}
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}
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}
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