f9b4490066
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3213 a1c6a512-1295-4272-9138-f99709370657
116 lines
4.2 KiB
C
116 lines
4.2 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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* $Id$
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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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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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/*
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* Incore font and image definitions
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*/
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#include "config.h"
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#if defined(HAVE_LCD_BITMAP) || defined(SIMULATOR)
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/* max static loadable fonts buffer*/
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#ifndef MAX_FONT_SIZE
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#define MAX_FONT_SIZE 9000 /* max total fontsize allocation*/
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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, /* system fixed pitch font*/
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FONT_UI, /* system porportional font*/
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MAXFONTS
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};
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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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* UCHAR name[64] 64 font name, space padded
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* UCHAR copyright[256] 256 copyright info, space padded
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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 pad 2 unused, pad to 32-bit boundary
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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 # words 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*2 image bits variable data
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* [MWIMAGEBITS padded to 32-bit boundary]
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* ULONG offset noffset*4 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 "RB11"
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typedef unsigned short bitmap_t; /* bitmap image unit size*/
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/* bitmap_t helper macros*/
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#define BITMAP_WORDS(x) (((x)+15)/16) /* image size in words*/
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#define BITMAP_BYTES(x) (BITMAP_WORDS(x)*sizeof(bitmap_t))
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#define BITMAP_BITSPERIMAGE (sizeof(bitmap_t) * 8)
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#define BITMAP_BITVALUE(n) ((bitmap_t) (((bitmap_t) 1) << (n)))
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#define BITMAP_FIRSTBIT (BITMAP_BITVALUE(BITMAP_BITSPERIMAGE - 1))
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#define BITMAP_TESTBIT(m) ((m) & BITMAP_FIRSTBIT)
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#define BITMAP_SHIFTBIT(m) ((bitmap_t) ((m) << 1))
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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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char * name; /* font name*/
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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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int firstchar; /* first character in bitmap*/
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int size; /* font size in glyphs*/
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bitmap_t *bits; /* 16-bit right-padded bitmap data*/
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unsigned long *offset; /* offsets into bitmap data*/
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unsigned char *width; /* character widths or NULL if fixed*/
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int defaultchar; /* default char (not glyph index)*/
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long bits_size; /* # words of bitmap_t bits*/
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};
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/* font routines*/
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void font_init(void);
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struct font* font_load(char *path);
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struct font* font_get(int font);
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void font_reset(void);
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#else /* HAVE_LCD_BITMAP */
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#define font_init()
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#define font_load(x)
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#endif
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/* -----------------------------------------------------------------
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* vim: et sw=4 ts=8 sts=4 tw=78
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*/
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