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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2002 by Greg Haerr <greg@censoft.com>
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _FONT_H
#define _FONT_H
/*
* Incore font and image definitions
*/
#include "config.h"
#if defined(HAVE_LCD_BITMAP) || defined(SIMULATOR)
/* max static loadable font buffer size */
#ifndef MAX_FONT_SIZE
#if LCD_HEIGHT > 64
#define MAX_FONT_SIZE 10000
#else
#define MAX_FONT_SIZE 4000
#endif
#endif
#ifndef FONT_HEADER_SIZE
#define FONT_HEADER_SIZE 36
#endif
#define GLYPH_CACHE_FILE "/.rockbox/.glyphcache"
/*
* Fonts are specified by number, and used for display
* of menu information as well as mp3 filename data.
* At system startup, up to MAXFONTS fonts are initialized,
* either by being compiled-in, or loaded from disk.
* If the font asked for does not exist, then the
* system uses the next lower font number. Font 0
* must be available at system startup.
* Fonts are specified in firmware/font.c.
*/
enum {
FONT_SYSFIXED, /* system fixed pitch font*/
FONT_UI, /* system porportional font*/
MAXFONTS
};
/*
* .fnt loadable font file format definition
*
* format len description
* ------------------------- ---- ------------------------------
* UCHAR version[4] 4 magic number and version bytes
* USHORT maxwidth 2 font max width in pixels
* USHORT height 2 font height in pixels
* USHORT ascent 2 font ascent (baseline) in pixels
* USHORT pad 2 unused, pad to 32-bit boundary
* ULONG firstchar 4 first character code in font
* ULONG defaultchar 4 default character code in font
* ULONG size 4 # characters in font
* ULONG nbits 4 # bytes imagebits data in file
* ULONG noffset 4 # longs offset data in file
* ULONG nwidth 4 # bytes width data in file
* MWIMAGEBITS bits nbits image bits variable data
* [MWIMAGEBITS padded to 16-bit boundary]
* USHORT offset noffset*2 offset variable data
* UCHAR width nwidth*1 width variable data
*/
/* loadable font magic and version #*/
#define VERSION "RB12"
/* builtin C-based proportional/fixed font structure */
/* based on The Microwindows Project http://microwindows.org */
struct font {
int maxwidth; /* max width in pixels*/
unsigned int height; /* height in pixels*/
int ascent; /* ascent (baseline) height*/
int firstchar; /* first character in bitmap*/
int size; /* font size in glyphs*/
const unsigned char *bits; /* 8-bit column bitmap data*/
const unsigned short *offset; /* offsets into bitmap data*/
const unsigned char *width; /* character widths or NULL if fixed*/
int defaultchar; /* default char (not glyph index)*/
long bits_size; /* # bytes of glyph bits*/
};
/* font routines*/
void font_init(void);
struct font* font_load(const char *path);
struct font* font_get(int font);
void font_reset(void);
int font_getstringsize(const unsigned char *str, int *w, int *h, int fontnumber);
int font_get_width(struct font* ft, unsigned short ch);
const unsigned char * font_get_bits(struct font* ft, unsigned short ch);
void glyph_cache_save(void);
void glyph_cache_load(void);
#else /* HAVE_LCD_BITMAP */
#define font_init()
#define font_load(x)
#endif
#endif
/* -----------------------------------------------------------------
* vim: et sw=4 ts=8 sts=4 tw=78
*/
|
