CPF/CPF.Mac/Mac/CoreGraphics/CGPDFInfo.cs

using CPF.Mac.CoreFoundation;
using CPF.Mac.Foundation;
using CPF.Mac.ObjCRuntime;
using System;

namespace CPF.Mac.CoreGraphics
{
	public class CGPDFInfo : CGPDFPageInfo
	{
		private static IntPtr kCGPDFContextTitle;

		private static IntPtr kCGPDFContextAuthor;

		private static IntPtr kCGPDFContextSubject;

		private static IntPtr kCGPDFContextKeywords;

		private static IntPtr kCGPDFContextCreator;

		private static IntPtr kCGPDFContextOwnerPassword;

		private static IntPtr kCGPDFContextUserPassword;

		private static IntPtr kCGPDFContextEncryptionKeyLength;

		private static IntPtr kCGPDFContextAllowsPrinting;

		private static IntPtr kCGPDFContextAllowsCopying;

		public string Title
		{
			get;
			set;
		}

		public string Author
		{
			get;
			set;
		}

		public string Subject
		{
			get;
			set;
		}

		public string[] Keywords
		{
			get;
			set;
		}

		public string Creator
		{
			get;
			set;
		}

		public string OwnerPassword
		{
			get;
			set;
		}

		public string UserPassword
		{
			get;
			set;
		}

		public int? EncryptionKeyLength
		{
			get;
			set;
		}

		public bool? AllowsPrinting
		{
			get;
			set;
		}

		public bool? AllowsCopying
		{
			get;
			set;
		}

		static CGPDFInfo()
		{
			IntPtr handle = Dlfcn.dlopen("/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/CoreGraphics", 0);
			try
			{
				kCGPDFContextTitle = Dlfcn.GetIntPtr(handle, "kCGPDFContextTitle");
				kCGPDFContextAuthor = Dlfcn.GetIntPtr(handle, "kCGPDFContextAuthor");
				kCGPDFContextSubject = Dlfcn.GetIntPtr(handle, "kCGPDFContextSubject");
				kCGPDFContextKeywords = Dlfcn.GetIntPtr(handle, "kCGPDFContextKeywords");
				kCGPDFContextCreator = Dlfcn.GetIntPtr(handle, "kCGPDFContextCreator");
				kCGPDFContextOwnerPassword = Dlfcn.GetIntPtr(handle, "kCGPDFContextOwnerPassword");
				kCGPDFContextUserPassword = Dlfcn.GetIntPtr(handle, "kCGPDFContextUserPassword");
				kCGPDFContextEncryptionKeyLength = Dlfcn.GetIntPtr(handle, "kCGPDFContextEncryptionKeyLength");
				kCGPDFContextAllowsPrinting = Dlfcn.GetIntPtr(handle, "kCGPDFContextAllowsPrinting");
				kCGPDFContextAllowsCopying = Dlfcn.GetIntPtr(handle, "kCGPDFContextAllowsCopying");
			}
			finally
			{
				Dlfcn.dlclose(handle);
			}
		}

		internal override NSMutableDictionary ToDictionary()
		{
			NSMutableDictionary nSMutableDictionary = base.ToDictionary();
			if (Title != null)
			{
				nSMutableDictionary.LowlevelSetObject((NSString)Title, kCGPDFContextTitle);
			}
			if (Author != null)
			{
				nSMutableDictionary.LowlevelSetObject((NSString)Author, kCGPDFContextAuthor);
			}
			if (Subject != null)
			{
				nSMutableDictionary.LowlevelSetObject((NSString)Subject, kCGPDFContextSubject);
			}
			if (Keywords != null && Keywords.Length != 0)
			{
				if (Keywords.Length == 1)
				{
					nSMutableDictionary.LowlevelSetObject((NSString)Keywords[0], kCGPDFContextKeywords);
				}
				else
				{
					nSMutableDictionary.LowlevelSetObject(NSArray.FromStrings(Keywords), kCGPDFContextKeywords);
				}
			}
			if (Creator != null)
			{
				nSMutableDictionary.LowlevelSetObject((NSString)Creator, kCGPDFContextCreator);
			}
			if (OwnerPassword != null)
			{
				nSMutableDictionary.LowlevelSetObject((NSString)OwnerPassword, kCGPDFContextOwnerPassword);
			}
			if (UserPassword != null)
			{
				nSMutableDictionary.LowlevelSetObject((NSString)UserPassword, kCGPDFContextUserPassword);
			}
			if (EncryptionKeyLength.HasValue)
			{
				nSMutableDictionary.LowlevelSetObject(NSNumber.FromInt32(EncryptionKeyLength.Value), kCGPDFContextEncryptionKeyLength);
			}
			if (AllowsPrinting.HasValue && !AllowsPrinting.Value)
			{
				nSMutableDictionary.LowlevelSetObject(CFBoolean.False.Handle, kCGPDFContextAllowsPrinting);
			}
			if (AllowsCopying.HasValue && !AllowsCopying.Value)
			{
				nSMutableDictionary.LowlevelSetObject(CFBoolean.False.Handle, kCGPDFContextAllowsCopying);
			}
			return nSMutableDictionary;
		}
	}
}