64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
/*
|
|
* \brief Font representation
|
|
* \date 2005-10-24
|
|
* \author Norman Feske
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2005-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__NITPICKER_GFX__FONT_H_
|
|
#define _INCLUDE__NITPICKER_GFX__FONT_H_
|
|
|
|
#include <base/stdint.h>
|
|
|
|
class Font
|
|
{
|
|
private:
|
|
|
|
typedef Genode::int32_t int32_t;
|
|
|
|
public:
|
|
|
|
unsigned char const *img; /* font image */
|
|
int const img_w, img_h; /* size of font image */
|
|
int32_t const *otab; /* offset table */
|
|
int32_t const *wtab; /* width table */
|
|
|
|
/**
|
|
* Construct font from a TFF data block
|
|
*/
|
|
Font(const char *tff)
|
|
:
|
|
img((unsigned char *)(tff + 2056)),
|
|
|
|
img_w(*((int32_t *)(tff + 2048))),
|
|
img_h(*((int32_t *)(tff + 2052))),
|
|
|
|
otab((int32_t *)(tff)),
|
|
wtab((int32_t *)(tff + 1024))
|
|
{ }
|
|
|
|
/**
|
|
* Calculate width of string when printed with the font
|
|
*/
|
|
int str_w(const char *sstr) const
|
|
{
|
|
const unsigned char *str = (const unsigned char *)sstr;
|
|
int res = 0;
|
|
for (; str && *str; str++) res += wtab[*str];
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* Calculate height of string when printed with the font
|
|
*/
|
|
int str_h(const char *str) const { return img_h; }
|
|
};
|
|
|
|
#endif /* _INCLUDE__NITPICKER_GFX__FONT_H_ */
|