#region PDFsharp - A .NET library for processing PDF
//
// Authors:
//   Stefan Lange
//
// Copyright (c) 2005-2016 empira Software GmbH, Cologne Area (Germany)
//
// http://www.PdfSharp.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.Collections.Generic;

namespace PdfSharpCore.Drawing
{
    ///<summary>
    /// Makes fonts that are not installed on the system available within the current application domain.<br/>
    /// In Silverlight required for all fonts used in PDF documents.
    /// </summary>
    public sealed class XPrivateFontCollection
    {
        // This one is global and can only grow. It is not possible to remove fonts that have been added.

        /// <summary>
        /// Initializes a new instance of the <see cref="XPrivateFontCollection"/> class.
        /// </summary>
        XPrivateFontCollection()
        {
            // HACK: Use one global PrivateFontCollection in GDI+
        }

        /// <summary>
        /// Gets the global font collection.
        /// </summary>
        internal static XPrivateFontCollection Singleton
        {
            get { return _singleton; }
        }
        internal static XPrivateFontCollection _singleton = new XPrivateFontCollection();

        static string MakeKey(string familyName, XFontStyle style)
        {
            return MakeKey(familyName, (style & XFontStyle.Bold) != 0, (style & XFontStyle.Italic) != 0);
        }

        static string MakeKey(string familyName, bool bold, bool italic)
        {
            return familyName + "#" + (bold ? "b" : "") + (italic ? "i" : "");
        }

        readonly Dictionary<string, XGlyphTypeface> _typefaces = new Dictionary<string, XGlyphTypeface>();
    }
}