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#region PDFsharp - A .NET library for processing PDF
//
// Authors:
// Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2008 empira Software GmbH, Cologne (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;
using System.Diagnostics;
using System.Collections;
using System.Text;
using System.IO;
using PdfSharp.Pdf.Advanced;
using PdfSharp.Drawing;
using PdfSharp.Fonts.TrueType;
using PdfSharp.Fonts;
using PdfSharp.Internal;
using PdfSharp.Pdf.Filters;
namespace PdfSharp.Pdf.Advanced
{
/// <summary>
/// Represents a PDF font.
/// </summary>
public class PdfFont : PdfDictionary
{
/// <summary>
/// Initializes a new instance of the <see cref="PdfFont"/> class.
/// </summary>
public PdfFont(PdfDocument document)
: base(document)
{
}
internal PdfFontDescriptor FontDescriptor
{
get
{
Debug.Assert(this.fontDescriptor != null);
//if (this.fontDescriptor2 == null)
// this.fontDescriptor2 = (PdfFontDescriptor)Elements.GetValue(Keys.FontDescriptor, VCF.CreateIndirect);
return this.fontDescriptor;
}
}
internal PdfFontDescriptor fontDescriptor;
internal PdfFontEncoding FontEncoding;
internal PdfFontEmbedding FontEmbedding;
//PdfFontOptions FontOptions
//{
// get { return this.fontOptions2; }
//}
//PdfFontOptions fontOptions2;
/// <summary>
/// Gets a value indicating whether this instance is symbol font.
/// </summary>
public bool IsSymbolFont
{
get { return this.fontDescriptor.IsSymbolFont; }
}
#if true_
public string BaseFont
{
get { return Elements.GetName(Keys.BaseFont); }
set { Elements.SetName(Keys.BaseFont, value); }
}
public int FirstChar
{
get { return Elements.GetInteger(Keys.FirstChar); }
set { Elements.SetInteger(Keys.FirstChar, value); }
}
public int LastChar
{
get { return Elements.GetInteger(Keys.LastChar); }
set { Elements.SetInteger(Keys.LastChar, value); }
}
public PdfArray Widths
{
get { return (PdfArray)Elements.GetValue(Keys.Widths, VCF.Create); }
}
public string Encoding
{
get { return Elements.GetName(Keys.Encoding); }
set { Elements.SetName(Keys.Encoding, value); }
}
#endif
internal void AddChars(string text)
{
if (this.cmapInfo != null)
this.cmapInfo.AddChars(text);
}
/// <summary>
/// Gets or sets the CMapInfo.
/// </summary>
internal CMapInfo CMapInfo
{
get { return this.cmapInfo; }
set { this.cmapInfo = value; }
}
internal CMapInfo cmapInfo;
/// <summary>
/// Gets or sets ToUnicodeMap.
/// </summary>
internal PdfToUnicodeMap ToUnicodeMap
{
get { return this.toUnicode; }
set { this.toUnicode = value; }
}
internal PdfToUnicodeMap toUnicode;
/// <summary>
/// Adds a tag of exactly six uppercase letters to the font name
/// according to PDF Reference Section 5.5.3 'Font Subsets'
/// </summary>
internal static string CreateEmbeddedFontSubsetName(string name)
{
StringBuilder s = new StringBuilder(64);
byte[] bytes = Guid.NewGuid().ToByteArray();
for (int idx = 0; idx < 6; idx++)
s.Append((char)('A' + bytes[idx] % 26));
s.Append('+');
if (name.StartsWith("/"))
s.Append(name.Substring(1));
else
s.Append(name);
return s.ToString();
}
/// <summary>
/// Predefined keys common to all font dictionaries.
/// </summary>
public class Keys : KeysBase
{
/// <summary>
/// (Required) The type of PDF object that this dictionary describes;
/// must be Font for a font dictionary.
/// </summary>
[KeyInfo(KeyType.Name | KeyType.Required, FixedValue = "Font")]
public const string Type = "/Type";
/// <summary>
/// (Required) The type of font.
/// </summary>
[KeyInfo(KeyType.Name | KeyType.Required)]
public const string Subtype = "/Subtype";
/// <summary>
/// (Required) The PostScript name of the font.
/// </summary>
[KeyInfo(KeyType.Name | KeyType.Required)]
public const string BaseFont = "/BaseFont";
/// <summary>
/// (Required except for the standard 14 fonts; must be an indirect reference)
/// A font descriptor describing the fonts metrics other than its glyph widths.
/// Note: For the standard 14 fonts, the entries FirstChar, LastChar, Widths, and
/// FontDescriptor must either all be present or all be absent. Ordinarily, they are
/// absent; specifying them enables a standard font to be overridden.
/// </summary>
[KeyInfo(KeyType.Dictionary | KeyType.MustBeIndirect, typeof(PdfFontDescriptor))]
public const string FontDescriptor = "/FontDescriptor";
}
}
}
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