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NetBSD/sys/dev/wsfont/wsfont.c

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/* $NetBSD: wsfont.c,v 1.22 2001/10/13 16:05:42 augustss Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wsfont.c,v 1.22 2001/10/13 16:05:42 augustss Exp $");
#include "opt_wsfont.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/malloc.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wsfont/wsfont.h>
#undef HAVE_FONT
#ifdef FONT_QVSS8x15
#define HAVE_FONT 1
#include <dev/wsfont/qvss8x15.h>
#endif
#ifdef FONT_GALLANT12x22
#define HAVE_FONT 1
#include <dev/wsfont/gallant12x22.h>
#endif
#ifdef FONT_LUCIDA16x29
#define HAVE_FONT 1
#include <dev/wsfont/lucida16x29.h>
#endif
#ifdef FONT_VT220L8x8
#define HAVE_FONT 1
#include <dev/wsfont/vt220l8x8.h>
#endif
#ifdef FONT_VT220L8x10
#define HAVE_FONT 1
#include <dev/wsfont/vt220l8x10.h>
#endif
#ifdef FONT_SONY8x16
#define HAVE_FONT 1
#include <dev/wsfont/sony8x16.h>
#endif
#ifdef FONT_SONY12x24
#define HAVE_FONT 1
#include <dev/wsfont/sony12x24.h>
#endif
#ifdef FONT_OMRON12x20
#define HAVE_FONT 1
#include <dev/wsfont/omron12x20.h>
#endif
/* Make sure we always have at least one font. */
#ifndef HAVE_FONT
#define HAVE_FONT 1
#define FONT_BOLD8x16 1
#endif
#ifdef FONT_BOLD8x16
#include <dev/wsfont/bold8x16.h>
#endif
/* Placeholder struct used for linked list */
struct font {
struct font *next;
struct font *prev;
struct wsdisplay_font *font;
u_short lockcount;
u_short cookie;
u_short flg;
};
/* Our list of built-in fonts */
static struct font *list, builtin_fonts[] = {
#ifdef FONT_BOLD8x16
{ NULL, NULL, &bold8x16, 0, 1, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_ISO8x16
{ NULL, NULL, &iso8x16, 0, 2, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_COURIER11x18
{ NULL, NULL, &courier11x18, 0, 3, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_GALLANT12x22
{ NULL, NULL, &gallant12x22, 0, 4, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_LUCIDA16x29
{ NULL, NULL, &lucida16x29, 0, 5, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_QVSS8x15
{ NULL, NULL, &qvss8x15, 0, 6, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_VT220L8x8
{ NULL, NULL, &vt220l8x8, 0, 7, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_VT220L8x10
{ NULL, NULL, &vt220l8x10, 0, 8, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_SONY8x16
{ NULL, NULL, &sony8x16, 0, 9, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_SONY12x24
{ NULL, NULL, &sony12x24, 0, 10, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
#ifdef FONT_OMRON12x20
{ NULL, NULL, &omron12x20, 0, 11, WSFONT_STATIC | WSFONT_BUILTIN },
#endif
{ NULL, NULL, NULL, 0 },
};
/* Reverse the bit order in a byte */
static const u_char reverse[256] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
};
static struct font *wsfont_find0(int);
static void wsfont_revbit(struct wsdisplay_font *);
static void wsfont_revbyte(struct wsdisplay_font *);
/*
* Reverse the bit order of a font
*/
static void
wsfont_revbit(struct wsdisplay_font *font)
{
u_char *p, *m;
p = (u_char *)font->data;
m = p + font->stride * font->numchars * font->fontheight;
for (; p < m; p++)
*p = reverse[*p];
}
/*
* Reverse the byte order of a font
*/
static void
wsfont_revbyte(struct wsdisplay_font *font)
{
int x, l, r, nr;
u_char *rp;
if (font->stride == 1)
return;
rp = (u_char *)font->data;
nr = font->numchars * font->fontheight;
while (nr--) {
l = 0;
r = font->stride - 1;
while (l < r) {
x = rp[l];
rp[l] = rp[r];
rp[r] = x;
l++, r--;
}
rp += font->stride;
}
}
/*
* Enumarate the list of fonts
*/
void
wsfont_enum(void (*cb)(char *, int, int, int))
{
struct wsdisplay_font *f;
struct font *ent;
int s;
s = splhigh();
for (ent = list; ent; ent = ent->next) {
f = ent->font;
cb(f->name, f->fontwidth, f->fontheight, f->stride);
}
splx(s);
}
/*
* Initialize list with WSFONT_BUILTIN fonts
*/
void
wsfont_init(void)
{
static int again;
int i;
if (again != 0)
return;
again = 1;
for (i = 0; builtin_fonts[i].font != NULL; i++) {
builtin_fonts[i].next = list;
list = &builtin_fonts[i];
}
}
/*
* Find a font by cookie. Called at splhigh.
*/
static struct font *
wsfont_find0(int cookie)
{
struct font *ent;
for (ent = list; ent != NULL; ent = ent->next)
if (ent->cookie == cookie)
return (ent);
return (NULL);
}
int
wsfont_matches(struct wsdisplay_font *font, char *name,
int width, int height, int stride)
{
if (height != 0 && font->fontheight != height)
return (0);
if (width != 0 && font->fontwidth != width)
return (0);
if (stride != 0 && font->stride != stride)
return (0);
if (name != NULL && strcmp(font->name, name) != 0)
return (0);
return (1);
}
/*
* Find a font.
*/
int
wsfont_find(char *name, int width, int height, int stride)
{
struct font *ent;
int s;
s = splhigh();
for (ent = list; ent != NULL; ent = ent->next) {
if (wsfont_matches(ent->font, name, width, height, stride)) {
splx(s);
return (ent->cookie);
}
}
splx(s);
return (-1);
}
/*
* Add a font to the list.
*/
int
wsfont_add(struct wsdisplay_font *font, int copy)
{
static int cookiegen = 666;
struct font *ent;
size_t size;
int s;
s = splhigh();
/* Don't allow exact duplicates */
if (wsfont_find(font->name, font->fontwidth, font->fontheight,
font->stride) >= 0) {
splx(s);
return (EEXIST);
}
MALLOC(ent, struct font *, sizeof *ent, M_DEVBUF, M_WAITOK);
ent->lockcount = 0;
ent->flg = 0;
ent->cookie = cookiegen++;
ent->next = list;
ent->prev = NULL;
/* Is this font statically allocated? */
if (!copy) {
ent->font = font;
ent->flg = WSFONT_STATIC;
} else {
MALLOC(ent->font, struct wsdisplay_font *, sizeof *ent->font,
M_DEVBUF, M_WAITOK);
memcpy(ent->font, font, sizeof(*ent->font));
size = font->fontheight * font->numchars * font->stride;
MALLOC(ent->font->data, void *, size, M_DEVBUF, M_WAITOK);
memcpy(ent->font->data, font->data, size);
MALLOC(ent->font->name, char *, strlen(font->name) + 1,
M_DEVBUF, M_WAITOK);
strcpy(ent->font->name, font->name);
ent->flg = 0;
}
/* Now link into the list and return */
list = ent;
splx(s);
return (0);
}
/*
* Remove a font.
*/
int
wsfont_remove(int cookie)
{
struct font *ent;
int s;
s = splhigh();
if ((ent = wsfont_find0(cookie)) == NULL) {
splx(s);
return (ENOENT);
}
if ((ent->flg & WSFONT_BUILTIN) != 0 || ent->lockcount != 0) {
splx(s);
return (EBUSY);
}
/* Don't free statically allocated font data */
if ((ent->flg & WSFONT_STATIC) != 0) {
FREE(ent->font->data, M_DEVBUF);
FREE(ent->font->name, M_DEVBUF);
FREE(ent->font, M_DEVBUF);
}
/* Remove from list, free entry */
if (ent->prev)
ent->prev->next = ent->next;
else
list = ent->next;
if (ent->next)
ent->next->prev = ent->prev;
FREE(ent, M_DEVBUF);
splx(s);
return (0);
}
/*
* Lock a given font and return new lockcount. This fails if the cookie
* is invalid, or if the font is already locked and the bit/byte order
* requested by the caller differs.
*/
int
wsfont_lock(int cookie, struct wsdisplay_font **ptr,
int bitorder, int byteorder)
{
struct font *ent;
int s, lc;
s = splhigh();
if ((ent = wsfont_find0(cookie)) != NULL) {
if (bitorder && bitorder != ent->font->bitorder) {
if (ent->lockcount) {
splx(s);
return (-1);
}
wsfont_revbit(ent->font);
ent->font->bitorder = bitorder;
}
if (byteorder && byteorder != ent->font->byteorder) {
if (ent->lockcount) {
splx(s);
return (-1);
}
wsfont_revbyte(ent->font);
ent->font->byteorder = byteorder;
}
lc = ++ent->lockcount;
*ptr = ent->font;
} else
lc = -1;
splx(s);
return (lc);
}
/*
* Get font flags and lockcount.
*/
int
wsfont_getflg(int cookie, int *flg, int *lc)
{
struct font *ent;
int s;
s = splhigh();
if ((ent = wsfont_find0(cookie)) != NULL) {
*flg = ent->flg;
*lc = ent->lockcount;
}
splx(s);
return (ent != NULL ? 0 : -1);
}
/*
* Unlock a given font and return new lockcount.
*/
int
wsfont_unlock(int cookie)
{
struct font *ent;
int s, lc;
s = splhigh();
if ((ent = wsfont_find0(cookie)) != NULL) {
if (ent->lockcount == 0)
panic("wsfont_unlock: font not locked\n");
lc = --ent->lockcount;
} else
lc = -1;
splx(s);
return (lc);
}
/*
* Unicode to font encoding mappings
*/
/*
* To save memory, font encoding tables use a two level lookup.
* First the high byte of the Unicode is used to lookup the level 2
* table, then the low byte indexes that table. Level 2 tables that are
* not needed are omitted (NULL), and both level 1 and level 2 tables
* have base and size attributes to keep their size down.
*/
struct wsfont_level1_glyphmap {
struct wsfont_level2_glyphmap **level2;
int base; /* High byte for first level2 entry */
int size; /* Number of level2 entries */
};
struct wsfont_level2_glyphmap {
int base; /* Low byte for first character */
int size; /* Number of characters */
void *chars; /* Pointer to character number entries */
int width; /* Size of each entry in bytes (1,2,4) */
};
#define null16 \
NULL, NULL, NULL, NULL, \
NULL, NULL, NULL, NULL, \
NULL, NULL, NULL, NULL, \
NULL, NULL, NULL, NULL
/*
* IBM 437 maps
*/
static u_int8_t
ibm437_chars_0[] = {
0, 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,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
255,173,155,156, 0, 157, 0, 0, 0, 0, 166,174,170, 0, 0, 0,
0, 241,253, 0, 0, 0, 0, 249, 0, 0, 167,175,172,171, 0, 168,
0, 0, 0, 0, 142,143,146,128, 0, 144, 0, 0, 0, 0, 0, 0,
0, 165, 0, 0, 0, 0, 153, 0, 0, 0, 0, 0, 154, 0, 0, 0,
133,160,131, 0, 132,134,145,135,138,130,136,137,141,161,140,139,
0, 164,149,162,147, 0, 148,246, 0, 151,163,150,129, 0, 0, 152
},
ibm437_chars_1[] = {
159
},
ibm437_chars_3[] = {
226, 0, 0, 0, 0, 233, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
228, 0, 0, 232, 0, 0, 234, 0, 0, 0, 0, 0, 0, 0, 224,225,
0, 235,238, 0, 0, 0, 0, 0, 0, 230, 0, 0, 0, 227, 0, 0,
229,231
},
ibm437_chars_32[] = {
252, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 158
},
ibm437_chars_34[] = {
237, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 248,250,251, 0, 0, 0, 236, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 239, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 247, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,240, 0, 0,243,
242
},
ibm437_chars_35[] = {
169, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
244,245
},
ibm437_chars_37[] = {
196,205,179,186, 0, 0, 0, 0, 0, 0, 0, 0, 218,213,214,201,
191,184,183,187,192,212,211,200,217,190,189,188,195,198, 0, 0,
199, 0, 0, 204,180,181, 0, 0, 182, 0, 0, 185,194, 0, 0, 209,
210, 0, 0, 203,193, 0, 0, 207,208, 0, 0, 202,197, 0, 0, 216,
0, 0, 215, 0, 0, 0, 0, 0, 0, 0, 0, 206, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
223, 0, 0, 0, 220, 0, 0, 0, 219, 0, 0, 0, 221, 0, 0, 0,
222,176,177,178, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
254
};
static struct wsfont_level2_glyphmap
ibm437_level2_0 = { 0, 256, ibm437_chars_0, 1 },
ibm437_level2_1 = { 146, 1, ibm437_chars_1, 1 },
ibm437_level2_3 = { 147, 50, ibm437_chars_3, 1 },
ibm437_level2_32 = { 127, 41, ibm437_chars_32, 1 },
ibm437_level2_34 = { 5, 97, ibm437_chars_34, 1 },
ibm437_level2_35 = { 16, 18, ibm437_chars_35, 1 },
ibm437_level2_37 = { 0, 161, ibm437_chars_37, 1 };
static struct wsfont_level2_glyphmap *ibm437_level1[] = {
&ibm437_level2_0, &ibm437_level2_1, NULL, &ibm437_level2_3,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
&ibm437_level2_32, NULL, &ibm437_level2_34, &ibm437_level2_35,
NULL, &ibm437_level2_37
};
/*
* ISO-8859-7 maps
*/
static u_int8_t
iso7_chars_0[] = {
0, 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,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160, 0, 0, 163, 0, 0, 166,167,168,169, 0, 171,172,173, 0, 0,
176,177,178,179,180, 0, 0, 183, 0, 0, 0, 187, 0, 189
},
iso7_chars_3[] = {
182, 0, 184,185,186, 0, 188, 0, 190,191,192,193,194,195,196,197,
198,199,200,201,202,203,204,205,206,207,208,209, 0, 211,212,213,
214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,
230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,
246,247,248,249,250,251,252,253,254, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 181
},
iso7_chars_32[] = {
175, 0, 0, 0, 0, 162, 0, 161
};
static struct wsfont_level2_glyphmap
iso7_level2_0 = { 0, 190, iso7_chars_0, 1 },
iso7_level2_3 = { 134, 111, iso7_chars_3, 1 },
iso7_level2_32 = { 20, 8, iso7_chars_32, 1 };
static struct wsfont_level2_glyphmap *iso7_level1[] = {
&iso7_level2_0, NULL, NULL, &iso7_level2_3,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
&iso7_level2_32
};
static struct wsfont_level1_glyphmap encodings[] = {
{ NULL, 0, 0 }, /* WSDISPLAY_FONTENC_ISO */
{ ibm437_level1, 0, 38 }, /* WSDISPLAY_FONTENC_IBM */
{ NULL, 0, 0 }, /* WSDISPLAY_FONTENC_PCVT */
{ iso7_level1, 0, 33 }, /* WSDISPLAY_FONTENC_ISO7 */
};
#define MAX_ENCODING (sizeof(encodings) / sizeof(encodings[0]))
/*
* Remap Unicode character to glyph
*/
int
wsfont_map_unichar(struct wsdisplay_font *font, int c)
{
if (font->encoding == WSDISPLAY_FONTENC_ISO) {
return c;
} else if (font->encoding < 0 || font->encoding > MAX_ENCODING) {
return (-1);
} else {
int hi = (c >> 8), lo = c & 255;
struct wsfont_level1_glyphmap *map1 =
&encodings[font->encoding];
if (hi >= map1->base && hi < map1->base + map1->size) {
struct wsfont_level2_glyphmap *map2 =
map1->level2[hi - map1->base];
if (map2 != NULL &&
lo >= map2->base && lo < map2->base + map2->size) {
lo -= map2->base;
switch(map2->width) {
case 1:
c = (((u_int8_t *)map2->chars)[lo]);
break;
case 2:
c = (((u_int16_t *)map2->chars)[lo]);
break;
case 4:
c = (((u_int32_t *)map2->chars)[lo]);
break;
}
if (c == 0 && lo != 0)
return (-1);
else
return (c);
} else {
return (-1);
}
} else {
return (-1);
}
}
}
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