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/***************************************************************************
* __________ __ ___.
* 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.
*
****************************************************************************/
/*
* Rockbox startup font initialization
* This file specifies which fonts get compiled-in and
* loaded at startup, as well as their mapping into
* the FONT_SYSFIXED, FONT_UI and FONT_MP3 ids.
*/
#include "config.h"
#if defined(HAVE_LCD_BITMAP) || defined(SIMULATOR)
#include <stdio.h>
#include <string.h>
#include "lcd.h"
#include "font.h"
#include "debug.h"
#include "panic.h"
/* available compiled-in fonts*/
extern MWCFONT font_X5x8;
/*extern MWCFONT font_X6x9; */
/*extern MWCFONT font_courB08; */
/*extern MWCFONT font_timR08; */
/* structure filled in by rbf_load_font*/
static MWCFONT font_UI;
/* system font table, in order of FONT_xxx definition*/
struct corefont sysfonts[MAXFONTS] = {
{ &font_X5x8, NULL }, /* compiled-in FONT_SYSFIXED*/
{ &font_UI, "/system.fnt" }, /* loaded FONT_UI*/
{ NULL, NULL }, /* no FONT_MP3*/
};
static void rotate_font_bits(PMWCFONT pf);
static void rotleft(unsigned char *dst, MWIMAGEBITS *src, unsigned int width,
unsigned int height);
void
font_init(void)
{
struct corefont *cfp;
for (cfp=sysfonts; cfp < &sysfonts[MAXFONTS]; ++cfp) {
if (cfp->pf && cfp->diskname) {
cfp->pf = rbf_load_font(cfp->diskname, cfp->pf);
#if defined(DEBUG) || defined(SIMULATOR)
if (!cfp->pf)
DEBUGF("Font load failed: %s\n", cfp->diskname);
#endif
}
/* one-time rotate font bits to rockbox format*/
if (cfp->pf && cfp->pf->height)
rotate_font_bits(cfp->pf);
}
}
/*
* Return a pointer to an incore font structure.
* If the requested font isn't loaded/compiled-in,
* decrement the font number and try again.
*/
PMWCFONT
getfont(int font)
{
PMWCFONT pf;
while (1) {
pf = sysfonts[font].pf;
if (pf && pf->height)
return pf;
if (--font < 0)
panicf("No font!");
}
}
/*
* Return width and height of a given font.
*/
void lcd_getfontsize(int font, int *width, int *height)
{
PMWCFONT pf = getfont(font);
*width = pf->maxwidth;
*height = pf->height;
}
/*
* Return width and height of a given font.
*/
//FIXME rename to font_gettextsize, add baseline
int
lcd_getstringsize(unsigned char *str, int font, int *w, int *h)
{
PMWCFONT pf = getfont(font);
int ch;
int width = 0;
while((ch = *str++)) {
/* check input range*/
if (ch < pf->firstchar || ch >= pf->firstchar+pf->size)
ch = pf->defaultchar;
ch -= pf->firstchar;
/* get proportional width and glyph bits*/
width += pf->width? pf->width[ch]: pf->maxwidth;
}
*w = width;
*h = pf->height;
return width;
}
/*
* Put a string at specified bit position
*/
//FIXME rename font_putsxy?
void
lcd_putsxy(int x, int y, unsigned char *str, int font)
{
int ch;
PMWCFONT pf = getfont(font);
while (((ch = *str++) != '\0')) {
MWIMAGEBITS *bits;
int width;
/* check input range*/
if (ch < pf->firstchar || ch >= pf->firstchar+pf->size)
ch = pf->defaultchar;
ch -= pf->firstchar;
/* get proportional width and glyph bits*/
width = pf->width? pf->width[ch]: pf->maxwidth;
if(x + width > LCD_WIDTH)
break;
bits = pf->bits + (pf->offset? pf->offset[ch]: (pf->height * ch));
lcd_bitmap((unsigned char *)bits, x, y, width, pf->height, true);
x += width;
}
}
/* convert font bitmap data inplace to rockbox format*/
static void
rotate_font_bits(PMWCFONT pf)
{
int i;
int defaultchar = pf->defaultchar - pf->firstchar;
int did_defaultchar = 0;
unsigned char buf[256];
for (i=0; i<pf->size; ++i) {
MWIMAGEBITS *bits = pf->bits +
(pf->offset? pf->offset[i]: (pf->height * i));
int width = pf->width? pf->width[i]: pf->maxwidth;
int src_bytes = MWIMAGE_BYTES(width) * pf->height;
/*
* Due to the way the offset map works,
* non-mapped characters are mapped to the default
* character, and shouldn't be rotated twice.
*/
if (i == defaultchar) {
if (did_defaultchar)
continue;
did_defaultchar = 1;
}
/* rotate left for lcd_bitmap function input*/
rotleft(buf, bits, width, pf->height);
/* copy back into original location*/
memcpy(bits, buf, src_bytes);
}
}
/*
* Take an MWIMAGEBITS bitmap and convert to Rockbox format.
* Used for converting font glyphs for the time being.
* Can use for standard X11 and Win32 images as well.
*
* Doing it this way keeps fonts in standard formats,
* as well as keeping Rockbox hw bitmap format.
*/
static void
rotleft(unsigned char *dst, MWIMAGEBITS *src, unsigned int width,
unsigned int height)
{
unsigned int i,j;
unsigned int dst_col = 0; /* destination column*/
unsigned int dst_shift = 0; /* destination shift amount*/
unsigned int dst_linelen; /* # bytes per output row*/
unsigned int src_words; /* # words of input image*/
/* calc bytes per output row*/
dst_linelen = (height-1)/8+1;
/* calc words of input image*/
src_words = MWIMAGE_WORDS(width) * height;
/* clear background*/
memset(dst, 0, dst_linelen*width);
for (i=0; i < src_words; i++) {
MWIMAGEBITS srcmap; /* current src input bit*/
MWIMAGEBITS dstmap; /* current dst output bit*/
/* calc src input bit*/
srcmap = 1 << (sizeof(MWIMAGEBITS)*8-1);
/* calc dst output bit*/
if (i>0 && (i%8==0)) {
++dst_col;
dst_shift = 0;
}
dstmap = 1 << dst_shift++;
/* for each input column...*/
for(j=0; j < width; j++) {
/* calc input bitmask*/
MWIMAGEBITS bit = srcmap >> j;
if (bit==0) {
srcmap = 1 << (sizeof(MWIMAGEBITS)*8-1);
bit = srcmap >> (j % 16);
}
/* if set in input, set in rotated output*/
if (bit & src[i]) {
/* input column j becomes output row*/
dst[j*dst_linelen + dst_col] |= dstmap;
}
/*debugf((bit & src[i])? "*": ".");*/
}
/*debugf("\n");*/
}
}
#endif /* HAVE_LCD_BITMAP */
/* -----------------------------------------------------------------
* local variables:
* eval: (load-file "rockbox-mode.el")
* vim: et sw=4 ts=4 sts=4 tw=78
* end:
*/
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