mono/mcs/class/System.Drawing/System.Drawing.Text/PrivateFontCollection.cs

//
// System.Drawing.Text.PrivateFontCollection.cs
//
// (C) 2002 Ximian, Inc.  http://www.ximian.com
// Author: Everaldo Canuto [email protected]
//		Sanjay Gupta ([email protected])
//		Peter Dennis Bartok ([email protected])
//
//
// Copyright (C) 2004 - 2006 Novell, Inc (http://www.novell.com)
//
// 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.
//

using System.IO;
using System.Security.Permissions;
using System.Runtime.InteropServices;

namespace System.Drawing.Text {

	public sealed class PrivateFontCollection : FontCollection {

		// constructors

		public PrivateFontCollection ()
		{
			Status status = GDIPlus.GdipNewPrivateFontCollection (out nativeFontCollection);
			GDIPlus.CheckStatus (status);
		}
		
		// methods
		public void AddFontFile (string filename) 
		{
			if (filename == null)
				throw new ArgumentNullException ("filename");

			// this ensure the filename is valid (or throw the correct exception)
			string fname = Path.GetFullPath (filename);

			if (!File.Exists (fname))
				throw new FileNotFoundException ();

			// note: MS throw the same exception FileNotFoundException if the file exists but isn't a valid font file
			Status status = GDIPlus.GdipPrivateAddFontFile (nativeFontCollection, fname);
			GDIPlus.CheckStatus (status);			
		}

		[SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
		public void AddMemoryFont (IntPtr memory, int length) 
		{
			// note: MS throw FileNotFoundException if something is bad with the data (except for a null pointer)
			Status status = GDIPlus.GdipPrivateAddMemoryFont (nativeFontCollection, memory, length);
			GDIPlus.CheckStatus (status);						
		}
		
		// methods	
		protected override void Dispose (bool disposing)
		{
			if (nativeFontCollection!=IntPtr.Zero) {
				GDIPlus.GdipDeletePrivateFontCollection (ref nativeFontCollection);							

				// This must be zeroed out, otherwise our base will also call
				// the GDI+ delete method on unix platforms. We're keeping the
				// base.Dispose() call in case other cleanup ever gets added there
				nativeFontCollection = IntPtr.Zero;
			}
			
			base.Dispose (disposing);
		}		
	}
}