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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2002 by Greg Haerr <greg@censoft.com>
*
* 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _FONT_H
#define _FONT_H
#include <stdlib.h>
#include "inttypes.h"
#include "stdbool.h"
/*
* Incore font and image definitions
*/
#include "config.h"
#ifndef __PCTOOL__
#include "font_cache.h"
#include "sysfont.h"
#endif
/*
* 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 = -1, /* system fixed pitch font*/
FONT_FIRSTUSERFONT = 0, /* first id for the user fonts */
};
#define MAXUSERFONTS 12
/* SYSFONT, FONT_UI, FONT_UI_REMOTE + MAXUSERFONTS fonts in skins */
#define MAXFONTS (FONT_FIRSTUSERFONT + MAXUSERFONTS)
#define FONT_UI 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 depth 2 depth of the font, 0=1bit and 1=4bit
* 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*/
int depth; /* depth of the font, 0=1bit and 1=4bit */
const unsigned char *bits; /* 8-bit column bitmap data*/
const void *offset; /* offsets into bitmap data,
uint16_t if bits_size < 0xFFDB else uint32_t*/
const unsigned char *width; /* character widths or NULL if fixed*/
int defaultchar; /* default char (not glyph index)*/
int32_t bits_size; /* # bytes of glyph bits*/
/* file, buffer and cache management */
int fd; /* fd for the font file. >= 0 if cached */
int fd_width; /* fd for the font file. >= 0 if cached */
int fd_offset; /* fd for the font file. >= 0 if cached */
int handle; /* core_allocator handle */
unsigned char *buffer_start; /* buffer to store the font in */
unsigned char *buffer_position; /* position in the buffer */
unsigned char *buffer_end; /* end of the buffer */
size_t buffer_size; /* size of the buffer in bytes */
bool disabled; /* font disabled (use blank as fallback if not in cache) */
#ifndef __PCTOOL__
struct font_cache cache;
uint32_t file_width_offset; /* offset to file width data */
uint32_t file_offset_offset; /* offset to file offset data */
int long_offset;
#endif
};
/* font routines*/
void font_init(void) INIT_ATTR;
const char* font_filename(int font_id);
int font_load(const char *path);
int font_load_ex(const char *path, size_t buffer_size, int glyphs);
void font_unload(int font_id);
void font_unload_all(void);
void font_lock(int font_id, bool lock);
/* Closes the file descriptor if the font file (if cached) but keeps
* the cache intact, so font_get_{bits,width} still work. */
void font_disable_all(void);
/* Re-opens the file descriptor of the font file. Should be called as
* counter-part of font_disable_all(); */
void font_enable_all(void);
struct font* font_get(int font);
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);
#endif
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