/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#pragma once
#include <o3tl/BigEndianTypes.hxx>
namespace font
{
// make sure no padding bytes are added for the struct
#pragma pack(push, 1)
/** Table directory of a TTF font, values are all in big endian */
struct TableDirectory
{
o3tl::sal_uInt32_BE nSfntVersion;
o3tl::sal_uInt16_BE nNumberOfTables;
o3tl::sal_uInt16_BE nSearchRange;
o3tl::sal_uInt16_BE nEntrySelector;
o3tl::sal_uInt16_BE nRangeShift;
};
/** Table directory entry
*
* Array of those follows TableDirectory structure.
*/
struct TableDirectoryEntry
{
o3tl::sal_uInt32_BE tag;
o3tl::sal_uInt32_BE checkSum;
o3tl::sal_uInt32_BE offset;
o3tl::sal_uInt32_BE length;
};
/** Structure of the OS2 table (Version 4)
*
* See: https://learn.microsoft.com/en-us/typography/opentype/spec/os2
*/
struct OS2Table
{
o3tl::sal_uInt16_BE nVersion;
o3tl::sal_uInt16_BE nXAvgCharWidth;
// FWORD
o3tl::sal_uInt16_BE nWeightClass;
o3tl::sal_uInt16_BE nWidthClass;
o3tl::sal_uInt16_BE nFsType;
o3tl::sal_uInt16_BE nSubscriptXSize;
// FWORD
o3tl::sal_uInt16_BE nSubscriptYSize;
// FWORD
o3tl::sal_uInt16_BE nSubscriptXOffset;
// FWORD
o3tl::sal_uInt16_BE nSubscriptYOffset;
// FWORD
o3tl::sal_uInt16_BE nSuperscriptXSize;
// FWORD
o3tl::sal_uInt16_BE nSuperscriptYSize;
// FWORD
o3tl::sal_uInt16_BE nSuperscriptXOffset;
// FWORD
o3tl::sal_uInt16_BE nSuperscriptYOffset;
// FWORD
o3tl::sal_uInt16_BE nStrikeoutSize;
// FWORD
o3tl::sal_uInt16_BE nStrikeoutPosition;
// FWORD
o3tl::sal_uInt16_BE nFamilyClass;
sal_uInt8 nPanose[10];
o3tl::sal_uInt32_BE nUnicodeRange1;
o3tl::sal_uInt32_BE nUnicodeRange2;
o3tl::sal_uInt32_BE nUnicodeRange3;
o3tl::sal_uInt32_BE nUnicodeRange4;
sal_uInt8 nFontVendorID[4];
// Tag type
o3tl::sal_uInt16_BE nFsSelection;
o3tl::sal_uInt16_BE nFirstCharIndex;
o3tl::sal_uInt16_BE nLastCharIndex;
o3tl::sal_uInt16_BE nTypoAscender;
// FWORD
o3tl::sal_uInt16_BE nTypoDescender;
// FWORD
o3tl::sal_uInt16_BE nTypoLineGap;
// FWORD
o3tl::sal_uInt16_BE nWinAscent;
// UFWORD
o3tl::sal_uInt16_BE nWinDescent;
// UFWORD
o3tl::sal_uInt32_BE nCodePageRange1;
o3tl::sal_uInt32_BE nCodePageRange2;
o3tl::sal_uInt16_BE nXHeight;
// FWORD
o3tl::sal_uInt16_BE nCapHeight;
// FWORD
o3tl::sal_uInt16_BE nDefaultChar;
o3tl::sal_uInt16_BE nBreakChar;
o3tl::sal_uInt16_BE nMaxContext;
o3tl::sal_uInt16_BE nLowerOpticalPointSize;
o3tl::sal_uInt16_BE nUpperOpticalPointSize;
};
// Check the size of OS2Table struct is as expected
static_assert(
sizeof(OS2Table) == 100);
/** Structure of "head" table.
*
* See: https://learn.microsoft.com/en-us/typography/opentype/spec/head
*/
struct HeadTable
{
sal_uInt16 nMajorVersion;
sal_uInt16 nMinorVersion;
sal_uInt32 nFontRevision;
o3tl::sal_uInt32_BE nCheckSumAdjustment;
o3tl::sal_uInt32_BE nMagicNumber;
o3tl::sal_uInt16_BE nFlags;
o3tl::sal_uInt16_BE nUnitsPerEm;
sal_Int64 nCreated;
// LONGDATETIME - signed 64-bit (TODO: need a BE type)
sal_Int64 nModified;
// LONGDATETIME - signed 64-bit (TODO: need a BE type)
o3tl::sal_uInt16_BE nXMin;
o3tl::sal_uInt16_BE nXMax;
o3tl::sal_uInt16_BE nYMin;
o3tl::sal_uInt16_BE nYMax;
o3tl::sal_uInt16_BE nMacStyle;
o3tl::sal_uInt16_BE nLowestRectPPEM;
o3tl::sal_uInt16_BE nFontDirectionHint;
o3tl::sal_uInt16_BE nIndexToLocFormat;
o3tl::sal_uInt16_BE nGlyphDataFormat;
};
// Check the size of HeadTable struct is as expected
static_assert(
sizeof(HeadTable) == 54);
/** Structure of "name" table (Version 0)
*
* See: https://learn.microsoft.com/en-us/typography/opentype/spec/name
*/
struct NameTable
{
o3tl::sal_uInt16_BE nVersion;
o3tl::sal_uInt16_BE nCount;
o3tl::sal_uInt16_BE nStorageOffset;
// Following this are NameRecords -> nCount times
};
/** Name record structure
*
* Array of those follows NameTable structure.
*/
struct NameRecord
{
o3tl::sal_uInt16_BE nPlatformID;
o3tl::sal_uInt16_BE nEncodingID;
o3tl::sal_uInt16_BE nLanguageID;
o3tl::sal_uInt16_BE nNameID;
o3tl::sal_uInt16_BE nLength;
// (in bytes)
o3tl::sal_uInt16_BE nStringOffset;
// offset from start of storage area (in bytes)
};
/** Name IDs
*
* See https://learn.microsoft.com/en-us/typography/opentype/spec/name#name-ids
*/
enum class NameID : sal_uInt16
{
Copyright = 0,
// example: "© Copyright..."
FamilyName = 1,
// example: "Times New Roman"
SubfamilyName = 2,
// example: "Bold"
UniqueID = 3,
// example: "Monotype: Times New Roman Bold: 1990"
FullFontName = 4,
// example: "Times New Roman Bold"
Version = 5,
// example: "Version 1.00 June 1, 1990, initial release"
PostScriptName = 6,
// example: "TimesNewRoman-Bold"
};
#pragma pack(pop)
}
// end font namespace
// Standard TrueType table tags
constexpr sal_uInt32 T_maxp = 0x6D617870;
constexpr sal_uInt32 T_glyf = 0x676C7966;
constexpr sal_uInt32 T_head = 0x68656164;
constexpr sal_uInt32 T_loca = 0x6C6F6361;
constexpr sal_uInt32 T_name = 0x6E616D65;
constexpr sal_uInt32 T_hhea = 0x68686561;
constexpr sal_uInt32 T_hmtx = 0x686D7478;
constexpr sal_uInt32 T_cmap = 0x636D6170;
constexpr sal_uInt32 T_vhea = 0x76686561;
constexpr sal_uInt32 T_vmtx = 0x766D7478;
constexpr sal_uInt32 T_OS2 = 0x4F532F32;
constexpr sal_uInt32 T_post = 0x706F7374;
constexpr sal_uInt32 T_cvt = 0x63767420;
constexpr sal_uInt32 T_prep = 0x70726570;
constexpr sal_uInt32 T_fpgm = 0x6670676D;
constexpr sal_uInt32 T_CFF = 0x43464620;
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
