blob: b1f8a9bfd2482d8385a5b090b27448e309c868ad (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/*************************************************************************
** HeadTable.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2024 Martin Gieseking <martin.gieseking@uos.de> **
** **
** This program is free software; you can redistribute it and/or **
** modify it under the terms of the GNU General Public License as **
** published by the Free Software Foundation; either version 3 of **
** the License, or (at your option) any later version. **
** **
** This program is distributed in the hope that it will be useful, but **
** WITHOUT ANY WARRANTY; without even the implied warranty of **
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
** GNU General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program; if not, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#pragma once
#include <limits>
#include "TTFTable.hpp"
namespace ttf {
/** This class provides the functions required to write the font header table of a TTF/OTF font.
* https://www.microsoft.com/typography/otspec/head.htm */
class HeadTable : public TTFTable {
friend class TTFWriter;
public:
uint32_t tag () const override {return name2id("head");}
void updateGlobalBbox (int16_t xmin, int16_t ymin, int16_t xmax, int16_t ymax);
void write (std::ostream &os) const override;
static int offsetToChecksum () {return 2+2+4;}
protected:
void setLongOffsetFormat () {_indexToLocFormat = 1;}
private:
int16_t _xMin = std::numeric_limits<int16_t>::max();
int16_t _yMin = std::numeric_limits<int16_t>::max();
int16_t _xMax = std::numeric_limits<int16_t>::min();
int16_t _yMax = std::numeric_limits<int16_t>::min();
int16_t _indexToLocFormat = 0; // 0: short (16-bit) format, 1: long (32-bit) format
};
} // namespace ttf
|