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Temporary solution to read woff2

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ema
2024-12-30 04:21:24 +08:00
parent ffecab95be
commit 4eb4251db5
91 changed files with 34874 additions and 4 deletions
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QuickLook.Plugin/QuickLook.Plugin.FontViewer/Typography.OpenFont/Tables.CFF/CFFTable.cs Normal file
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//Apache2, 2018, Apache/PDFBox Authors ( https://github.com/apache/pdfbox)
//
//
//Apache PDFBox
//Copyright 2014 The Apache Software Foundation
//This product includes software developed at
//The Apache Software Foundation(http://www.apache.org/).
//Based on source code originally developed in the PDFBox and
//FontBox projects.
//Copyright (c) 2002-2007, www.pdfbox.org
//Based on source code originally developed in the PaDaF project.
//Copyright (c) 2010 Atos Worldline SAS
//Includes the Adobe Glyph List
//Copyright 1997, 1998, 2002, 2007, 2010 Adobe Systems Incorporated.
//Includes the Zapf Dingbats Glyph List
//Copyright 2002, 2010 Adobe Systems Incorporated.
//Includes OSXAdapter
//Copyright (C) 2003-2007 Apple, Inc., All Rights Reserved
//----------------
//ccf1 spec from http://wwwimages.adobe.com/www.adobe.com/content/dam/acom/en/devnet/font/pdfs/5176.CFF.pdf
//------------------------------------------------------------------
//Apache2, 2018-present, WinterDev
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using Typography.OpenFont.CFF;
namespace Typography.OpenFont.Tables
{
//from https://docs.microsoft.com/en-us/typography/opentype/spec/cff
//This table contains a Compact Font Format font representation (also known as a PostScript Type 1, or CIDFont)
//and is structured according to
//Adobe Technical Note #5176: “The Compact Font Format Specification,” (https://wwwimages2.adobe.com/content/dam/acom/en/devnet/font/pdfs/5176.CFF.pdf)
//and
//Adobe Technical Note #5177: “Type 2 Charstring Format.” (https://wwwimages2.adobe.com/content/dam/acom/en/devnet/font/pdfs/5177.Type2.pdf)
//...
// ... glyph data is accessed through the CharStrings INDEX of the CFF table.
//...
//The CFF Top DICT must specify a CharstringType value of 2.
//The numGlyphs field in the 'maxp' table must be the same as the number of entries in the CFF's CharStrings INDEX.
//The OpenType font glyph index is the same as the CFF glyph index for all glyphs in the font.
//Note that, in an OpenType font collection file, a single 'CFF ' table can be shared across multiple fonts;
//names used by applications must be those provided in the 'name' table, not the Name INDEX entry.
//The CFF Top DICT must specify a CharstringType value of 2.
//The numGlyphs field in the 'maxp' table must be the same as the number of entries in the CFF’s CharStrings INDEX.
//The OpenType font glyph index is the same as the CFF glyph index for all glyphs in the font.
class CFFTable : TableEntry
{
public const string _N = "CFF ";//4 chars, left 1 blank whitespace
public override string Name => _N;
//
Cff1FontSet _cff1FontSet;
//
internal Cff1FontSet Cff1FontSet => _cff1FontSet;
protected override void ReadContentFrom(BinaryReader reader)
{
long startAt = reader.BaseStream.Position;
//
//
//Table 8 Header Format
//Type Name Description
//Card8 major Format major version(starting at 1)
//Card8 minor Format minor version(starting at 0)
//Card8 hdrSize Header size(bytes)
//OffSize offSize Absolute offset(0) size
byte[] header = reader.ReadBytes(4);
byte major = header[0];
byte minor = header[1];
byte hdrSize = header[2];
byte offSize = header[3];
////---------
//name index
switch (major)
{
default: throw new OpenFontNotSupportedException();
case 1:
{
Cff1Parser cff1 = new Cff1Parser();
cff1.ParseAfterHeader(startAt, reader);
_cff1FontSet = cff1.ResultCff1FontSet;
}
break;
case 2:
{
Cff2Parser cff2 = new Cff2Parser();
cff2.ParseAfterHeader(reader);
}
break;
}
}
}
}