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d87755c535
FONT_UI scans from MAXFONTS-1 to 0 to maximize the chances of getting a loaded font but this may result in global_status.font_id being ignored even if set through setuifont this should take care of all the plugin woes dues to this by setting the lcd font to the ui font before loading the plugin and also making FONT_UI map to this font when font_get(FONT_UI) is called if the desired font is not loaded then fallback to the previous behavior Change-Id: I101d6f91910c17b08fca2b988a0a99c9e6899bee
143 lines
6 KiB
C
143 lines
6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (c) 2002 by Greg Haerr <greg@censoft.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _FONT_H
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#define _FONT_H
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#include <stdlib.h>
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#include "inttypes.h"
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#include "stdbool.h"
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/*
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* Incore font and image definitions
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*/
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#include "config.h"
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#ifndef __PCTOOL__
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#include "font_cache.h"
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#include "sysfont.h"
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#endif
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/*
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* Fonts are specified by number, and used for display
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* of menu information as well as mp3 filename data.
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* At system startup, up to MAXFONTS fonts are initialized,
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* either by being compiled-in, or loaded from disk.
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* If the font asked for does not exist, then the
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* system uses the next lower font number. Font 0
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* must be available at system startup.
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* Fonts are specified in firmware/font.c.
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*/
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enum {
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FONT_SYSFIXED = -1, /* system fixed pitch font*/
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FONT_FIRSTUSERFONT = 0, /* first id for the user fonts */
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};
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#define MAXUSERFONTS 12
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/* SYSFONT, FONT_UI, FONT_UI_REMOTE + MAXUSERFONTS fonts in skins */
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#define MAXFONTS (FONT_FIRSTUSERFONT + MAXUSERFONTS)
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#define FONT_UI MAXFONTS
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#define FONT_LASTUSERFONT (MAXFONTS-1)
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/*
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* .fnt loadable font file format definition
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*
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* format len description
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* ------------------------- ---- ------------------------------
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* UCHAR version[4] 4 magic number and version bytes
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* USHORT maxwidth 2 font max width in pixels
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* USHORT height 2 font height in pixels
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* USHORT ascent 2 font ascent (baseline) in pixels
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* USHORT depth 2 depth of the font, 0=1bit and 1=4bit
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* ULONG firstchar 4 first character code in font
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* ULONG defaultchar 4 default character code in font
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* ULONG size 4 # characters in font
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* ULONG nbits 4 # bytes imagebits data in file
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* ULONG noffset 4 # longs offset data in file
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* ULONG nwidth 4 # bytes width data in file
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* MWIMAGEBITS bits nbits image bits variable data
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* [MWIMAGEBITS padded to 16-bit boundary]
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* USHORT offset noffset*2 offset variable data
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* UCHAR width nwidth*1 width variable data
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*/
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/* loadable font magic and version #*/
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#define VERSION "RB12"
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/* builtin C-based proportional/fixed font structure */
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/* based on The Microwindows Project http://microwindows.org */
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struct font {
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int maxwidth; /* max width in pixels*/
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unsigned int height; /* height in pixels*/
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int ascent; /* ascent (baseline) height*/
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unsigned int firstchar; /* first character in bitmap*/
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int size; /* font size in glyphs*/
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int depth; /* depth of the font, 0=1bit and 1=4bit */
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const unsigned char *bits; /* 8-bit column bitmap data*/
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const void *offset; /* offsets into bitmap data,
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uint16_t if bits_size < 0xFFDB else uint32_t*/
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const unsigned char *width; /* character widths or NULL if fixed*/
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int defaultchar; /* default char (not glyph index)*/
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int32_t bits_size; /* # bytes of glyph bits*/
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/* file, buffer and cache management */
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int fd; /* fd for the font file. >= 0 if cached */
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int fd_width; /* fd for the font file. >= 0 if cached */
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int fd_offset; /* fd for the font file. >= 0 if cached */
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int handle; /* core_allocator handle */
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unsigned char *buffer_start; /* buffer to store the font in */
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unsigned char *buffer_position; /* position in the buffer */
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unsigned char *buffer_end; /* end of the buffer */
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size_t buffer_size; /* size of the buffer in bytes */
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bool disabled; /* font disabled (use blank as fallback if not in cache) */
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#ifndef __PCTOOL__
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struct font_cache cache;
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uint32_t file_width_offset; /* offset to file width data */
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uint32_t file_offset_offset; /* offset to file offset data */
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int long_offset;
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#endif
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};
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/* font routines*/
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void font_init(void) INIT_ATTR;
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bool font_filename_matches_loaded_id(int font_id, const char *filename);
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int font_load(const char *path);
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int font_load_ex(const char *path, size_t buffer_size, int glyphs);
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void font_unload(int font_id);
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void font_unload_all(void);
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void font_lock(int font_id, bool lock);
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/* Closes the file descriptor if the font file (if cached) but keeps
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* the cache intact, so font_get_{bits,width} still work. */
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void font_disable_all(void);
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/* Re-opens the file descriptor of the font file. Should be called as
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* counter-part of font_disable_all(); */
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void font_enable_all(void);
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struct font* font_get(int font);
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void set_ui_font(int font); /* when FONT_UI is supplied this font will be tried first */
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int font_measurestring(const unsigned char *str, size_t maxbytes, size_t maxwidth, int *w, int *h, int fontnum);
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int font_getstringnsize(const unsigned char *str, size_t maxbytes, int *w, int *h, int fontnumber);
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int font_getstringsize(const unsigned char *str, int *w, int *h, int fontnumber);
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int font_get_width(struct font* ft, ucschar_t ch);
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const unsigned char * font_get_bits(struct font* ft, ucschar_t ch);
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#endif
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