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NetBSD/sys/dev/rcons/rcons_subr.c

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/* $NetBSD: rcons_subr.c,v 1.2 1995/10/04 23:57:26 pk Exp $ */
/*
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)rcons_subr.c 8.1 (Berkeley) 6/11/93
*/
#ifdef _KERNEL
#include <sys/param.h>
#include <sys/device.h>
#else
#include <sys/types.h>
#include "myfbdevice.h"
#endif
#include <dev/rcons/rcons.h>
#include <dev/rcons/raster.h>
#include "rcons_subr.h"
extern void rcons_bell(struct rconsole *);
#define RCONS_ISPRINT(c) ((((c) >= ' ') && ((c) <= '~')) || ((c) > 160))
#define RCONS_ISDIGIT(c) ((c) >= '0' && (c) <= '9')
/* Output (or at least handle) a string sent to the console */
void
rcons_puts(rc, str, n)
register struct rconsole *rc;
register unsigned char *str;
register int n;
{
register int c, i, j;
register unsigned char *cp;
/* Jump scroll */
/* XXX maybe this should be an option? */
if ((rc->rc_bits & FB_INESC) == 0) {
/* Count newlines up to an escape sequence */
i = 0;
j = 0;
for (cp = str; j++ < n && *cp != '\033'; ++cp) {
if (*cp == '\n')
++i;
else if (*cp == '\013')
--i;
}
/* Only jump scroll two or more rows */
if (*rc->rc_row + i >= rc->rc_maxrow + 1) {
/* Erase the cursor (if necessary) */
if (rc->rc_bits & FB_CURSOR)
rcons_cursor(rc);
rcons_scroll(rc, i);
}
}
/* Process characters */
while (--n >= 0) {
c = *str;
if (c == '\033') {
/* Start an escape (perhaps aborting one in progress) */
rc->rc_bits |= FB_INESC | FB_P0_DEFAULT | FB_P1_DEFAULT;
rc->rc_bits &= ~(FB_P0 | FB_P1);
/* Most parameters default to 1 */
rc->rc_p0 = rc->rc_p1 = 1;
} else if (rc->rc_bits & FB_INESC) {
rcons_esc(rc, c);
} else {
/* Erase the cursor (if necessary) */
if (rc->rc_bits & FB_CURSOR)
rcons_cursor(rc);
/* Display the character */
if (RCONS_ISPRINT(c)) {
/* Try to output as much as possible */
j = rc->rc_maxcol - (*rc->rc_col + 1);
if (j > n)
j = n;
for (i = 1; i < j && RCONS_ISPRINT(str[i]); ++i)
continue;
rcons_text(rc, str, i);
--i;
str += i;
n -= i;
} else
rcons_pctrl(rc, c);
}
++str;
}
/* Redraw the cursor (if necessary) */
if ((rc->rc_bits & FB_CURSOR) == 0)
rcons_cursor(rc);
}
/* Actually write a string to the frame buffer */
void
rcons_text(rc, str, n)
register struct rconsole *rc;
register unsigned char *str;
register int n;
{
register int x, y, op;
x = *rc->rc_col * rc->rc_font->width + rc->rc_xorigin;
y = *rc->rc_row * rc->rc_font->height +
rc->rc_font->ascent + rc->rc_yorigin;
op = RAS_SRC;
if (((rc->rc_bits & FB_STANDOUT) != 0) ^
((rc->rc_bits & FB_INVERT) != 0))
op = RAS_NOT(op);
raster_textn(rc->rc_sp, x, y, op, rc->rc_font, str, n);
*rc->rc_col += n;
if (*rc->rc_col >= rc->rc_maxcol) {
*rc->rc_col = 0;
(*rc->rc_row)++;
}
if (*rc->rc_row >= rc->rc_maxrow)
rcons_scroll(rc, 1);
}
/* Handle a control character sent to the console */
void
rcons_pctrl(rc, c)
register struct rconsole *rc;
register int c;
{
switch (c) {
case '\r': /* Carriage return */
*rc->rc_col = 0;
break;
case '\b': /* Backspace */
if (*rc->rc_col > 0)
(*rc->rc_col)--;
break;
case '\013': /* Vertical tab */
if (*rc->rc_row > 0)
(*rc->rc_row)--;
break;
case '\f': /* Formfeed */
*rc->rc_row = *rc->rc_col = 0;
rcons_clear2eop(rc);
break;
case '\n': /* Linefeed */
(*rc->rc_row)++;
if (*rc->rc_row >= rc->rc_maxrow)
rcons_scroll(rc, 1);
break;
case '\007': /* Bell */
rcons_bell(rc);
break;
case '\t': /* Horizontal tab */
*rc->rc_col = (*rc->rc_col + 8) & ~7;
if (*rc->rc_col >= rc->rc_maxcol)
*rc->rc_col = rc->rc_maxcol - 1;
break;
}
}
/* Handle the next character in an escape sequence */
void
rcons_esc(rc, c)
register struct rconsole *rc;
register int c;
{
if (c == '[') {
/* Parameter 0 */
rc->rc_bits &= ~FB_P1;
rc->rc_bits |= FB_P0;
} else if (c == ';') {
/* Parameter 1 */
rc->rc_bits &= ~FB_P0;
rc->rc_bits |= FB_P1;
} else if (RCONS_ISDIGIT(c)) {
/* Add a digit to a parameter */
if (rc->rc_bits & FB_P0) {
/* Parameter 0 */
if (rc->rc_bits & FB_P0_DEFAULT) {
rc->rc_bits &= ~FB_P0_DEFAULT;
rc->rc_p0 = 0;
}
rc->rc_p0 *= 10;
rc->rc_p0 += c - '0';
} else if (rc->rc_bits & FB_P1) {
/* Parameter 1 */
if (rc->rc_bits & FB_P1_DEFAULT) {
rc->rc_bits &= ~FB_P1_DEFAULT;
rc->rc_p1 = 0;
}
rc->rc_p1 *= 10;
rc->rc_p1 += c - '0';
}
} else {
/* Erase the cursor (if necessary) */
if (rc->rc_bits & FB_CURSOR)
rcons_cursor(rc);
/* Process the completed escape sequence */
rcons_doesc(rc, c);
rc->rc_bits &= ~FB_INESC;
}
}
/* Process a complete escape sequence */
void
rcons_doesc(rc, c)
register struct rconsole *rc;
register int c;
{
#ifdef notdef
/* XXX add escape sequence to enable visual (and audible) bell */
rc->rc_bits = FB_VISBELL;
#endif
switch (c) {
case '@':
/* Insert Character (ICH) */
rcons_insertchar(rc, rc->rc_p0);
break;
case 'A':
/* Cursor Up (CUU) */
*rc->rc_row -= rc->rc_p0;
if (*rc->rc_row < 0)
*rc->rc_row = 0;
break;
case 'B':
/* Cursor Down (CUD) */
*rc->rc_row += rc->rc_p0;
if (*rc->rc_row >= rc->rc_maxrow)
*rc->rc_row = rc->rc_maxrow - 1;
break;
case 'C':
/* Cursor Forward (CUF) */
*rc->rc_col += rc->rc_p0;
if (*rc->rc_col >= rc->rc_maxcol)
*rc->rc_col = rc->rc_maxcol - 1;
break;
case 'D':
/* Cursor Backward (CUB) */
*rc->rc_col -= rc->rc_p0;
if (*rc->rc_col < 0)
*rc->rc_col = 0;
break;
case 'E':
/* Cursor Next Line (CNL) */
*rc->rc_col = 0;
*rc->rc_row += rc->rc_p0;
if (*rc->rc_row >= rc->rc_maxrow)
*rc->rc_row = rc->rc_maxrow - 1;
break;
case 'f':
/* Horizontal And Vertical Position (HVP) */
case 'H':
/* Cursor Position (CUP) */
*rc->rc_col = rc->rc_p1 - 1;
if (*rc->rc_col < 0)
*rc->rc_col = 0;
else if (*rc->rc_col >= rc->rc_maxcol)
*rc->rc_col = rc->rc_maxcol - 1;
*rc->rc_row = rc->rc_p0 - 1;
if (*rc->rc_row < 0)
*rc->rc_row = 0;
else if (*rc->rc_row >= rc->rc_maxrow)
*rc->rc_row = rc->rc_maxrow - 1;
break;
case 'J':
/* Erase in Display (ED) */
rcons_clear2eop(rc);
break;
case 'K':
/* Erase in Line (EL) */
rcons_clear2eol(rc);
break;
case 'L':
/* Insert Line (IL) */
rcons_insertline(rc, rc->rc_p0);
break;
case 'M':
/* Delete Line (DL) */
rcons_delline(rc, rc->rc_p0);
break;
case 'P':
/* Delete Character (DCH) */
rcons_delchar(rc, rc->rc_p0);
break;
case 'm':
/* Select Graphic Rendition (SGR); */
/* (defaults to zero) */
if (rc->rc_bits & FB_P0_DEFAULT)
rc->rc_p0 = 0;
if (rc->rc_p0)
rc->rc_bits |= FB_STANDOUT;
else
rc->rc_bits &= ~FB_STANDOUT;
break;
case 'p':
/* Black On White (SUNBOW) */
rcons_invert(rc, 0);
break;
case 'q':
/* White On Black (SUNWOB) */
rcons_invert(rc, 1);
break;
case 'r':
/* Set scrolling (SUNSCRL) */
/* (defaults to zero) */
if (rc->rc_bits & FB_P0_DEFAULT)
rc->rc_p0 = 0;
/* XXX not implemented yet */
rc->rc_scroll = rc->rc_p0;
break;
case 's':
/* Reset terminal emulator (SUNRESET) */
rc->rc_bits &= ~FB_STANDOUT;
rc->rc_scroll = 0;
if (rc->rc_bits & FB_INVERT)
rcons_invert(rc, 0);
break;
}
}
/* Paint (or unpaint) the cursor */
void
rcons_cursor(rc)
register struct rconsole *rc;
{
register int x, y;
x = *rc->rc_col * rc->rc_font->width + rc->rc_xorigin;
y = *rc->rc_row * rc->rc_font->height + rc->rc_yorigin;
raster_op(rc->rc_sp, x, y,
#ifdef notdef
/* XXX This is the right way but too slow */
rc->rc_font->chars[(int)' '].r->width,
rc->rc_font->chars[(int)' '].r->height,
#else
rc->rc_font->width, rc->rc_font->height,
#endif
RAS_INVERT, (struct raster *) 0, 0, 0);
rc->rc_bits ^= FB_CURSOR;
}
/* Possibly change to SUNWOB or SUNBOW mode */
void
rcons_invert(rc, wob)
struct rconsole *rc;
int wob;
{
if (((rc->rc_bits & FB_INVERT) != 0) ^ wob) {
/* Invert the display */
raster_op(rc->rc_sp, 0, 0, rc->rc_sp->width, rc->rc_sp->height,
RAS_INVERT, (struct raster *) 0, 0, 0);
/* Swap things around */
rc->rc_ras_blank = RAS_NOT(rc->rc_ras_blank);
rc->rc_bits ^= FB_INVERT;
}
}
/* Clear to the end of the page */
void
rcons_clear2eop(rc)
register struct rconsole *rc;
{
register int y;
if (*rc->rc_col == 0 && *rc->rc_row == 0) {
/* Clear the entire frame buffer */
raster_op(rc->rc_sp, 0, 0,
rc->rc_sp->width, rc->rc_sp->height,
rc->rc_ras_blank, (struct raster *) 0, 0, 0);
} else {
/* Only clear what needs to be cleared */
rcons_clear2eol(rc);
y = (*rc->rc_row + 1) * rc->rc_font->height;
raster_op(rc->rc_sp, rc->rc_xorigin, rc->rc_yorigin + y,
rc->rc_emuwidth, rc->rc_emuheight - y,
rc->rc_ras_blank, (struct raster *) 0, 0, 0);
}
}
/* Clear to the end of the line */
void
rcons_clear2eol(rc)
register struct rconsole *rc;
{
register int x;
x = *rc->rc_col * rc->rc_font->width;
raster_op(rc->rc_sp,
rc->rc_xorigin + x,
*rc->rc_row * rc->rc_font->height + rc->rc_yorigin,
rc->rc_emuwidth - x, rc->rc_font->height,
rc->rc_ras_blank, (struct raster *) 0, 0, 0);
}
/* Scroll up one line */
void
rcons_scroll(rc, n)
register struct rconsole *rc;
register int n;
{
register int ydiv;
/* Can't scroll more than the whole screen */
if (n > rc->rc_maxrow)
n = rc->rc_maxrow;
/* Calculate new row */
*rc->rc_row -= n;
if (*rc->rc_row < 0)
*rc->rc_row = 0;
/* Calculate number of pixels to scroll */
ydiv = rc->rc_font->height * n;
raster_op(rc->rc_sp, rc->rc_xorigin, rc->rc_yorigin,
rc->rc_emuwidth, rc->rc_emuheight - ydiv,
RAS_SRC, rc->rc_sp, rc->rc_xorigin, ydiv + rc->rc_yorigin);
raster_op(rc->rc_sp,
rc->rc_xorigin, rc->rc_yorigin + rc->rc_emuheight - ydiv,
rc->rc_emuwidth, ydiv, rc->rc_ras_blank, (struct raster *) 0, 0, 0);
}
/* Delete characters */
void
rcons_delchar(rc, n)
register struct rconsole *rc;
register int n;
{
register int tox, fromx, y, width;
/* Can't delete more chars than there are */
if (n > rc->rc_maxcol - *rc->rc_col)
n = rc->rc_maxcol - *rc->rc_col;
fromx = (*rc->rc_col + n) * rc->rc_font->width;
tox = *rc->rc_col * rc->rc_font->width;
y = *rc->rc_row * rc->rc_font->height;
width = n * rc->rc_font->width;
raster_op(rc->rc_sp, tox + rc->rc_xorigin, y + rc->rc_yorigin,
rc->rc_emuwidth - fromx, rc->rc_font->height,
RAS_SRC, rc->rc_sp, fromx + rc->rc_xorigin, y + rc->rc_yorigin);
raster_op(rc->rc_sp,
rc->rc_emuwidth - width + rc->rc_xorigin, y + rc->rc_yorigin,
width, rc->rc_font->height,
rc->rc_ras_blank, (struct raster *) 0, 0, 0);
}
/* Delete a number of lines */
void
rcons_delline(rc, n)
register struct rconsole *rc;
register int n;
{
register int fromy, toy, height;
/* Can't delete more lines than there are */
if (n > rc->rc_maxrow - *rc->rc_row)
n = rc->rc_maxrow - *rc->rc_row;
fromy = (*rc->rc_row + n) * rc->rc_font->height;
toy = *rc->rc_row * rc->rc_font->height;
height = rc->rc_font->height * n;
raster_op(rc->rc_sp, rc->rc_xorigin, toy + rc->rc_yorigin,
rc->rc_emuwidth, rc->rc_emuheight - fromy, RAS_SRC,
rc->rc_sp, rc->rc_xorigin, fromy + rc->rc_yorigin);
raster_op(rc->rc_sp,
rc->rc_xorigin, rc->rc_emuheight - height + rc->rc_yorigin,
rc->rc_emuwidth, height,
rc->rc_ras_blank, (struct raster *) 0, 0, 0);
}
/* Insert some characters */
void
rcons_insertchar(rc, n)
register struct rconsole *rc;
register int n;
{
register int tox, fromx, y;
/* Can't insert more chars than can fit */
if (n > rc->rc_maxcol - *rc->rc_col)
n = rc->rc_maxcol - *rc->rc_col;
tox = (*rc->rc_col + n) * rc->rc_font->width;
fromx = *rc->rc_col * rc->rc_font->width;
y = *rc->rc_row * rc->rc_font->height;
raster_op(rc->rc_sp, tox + rc->rc_xorigin, y + rc->rc_yorigin,
rc->rc_emuwidth - tox, rc->rc_font->height,
RAS_SRC, rc->rc_sp, fromx + rc->rc_xorigin, y + rc->rc_yorigin);
raster_op(rc->rc_sp, fromx + rc->rc_xorigin, y + rc->rc_yorigin,
rc->rc_font->width * n, rc->rc_font->height,
rc->rc_ras_blank, (struct raster *) 0, 0, 0);
}
/* Insert some lines */
void
rcons_insertline(rc, n)
register struct rconsole *rc;
register int n;
{
register int fromy, toy;
/* Can't insert more lines than can fit */
if (n > rc->rc_maxrow - *rc->rc_row)
n = rc->rc_maxrow - *rc->rc_row;
toy = (*rc->rc_row + n) * rc->rc_font->height;
fromy = *rc->rc_row * rc->rc_font->height;
raster_op(rc->rc_sp, rc->rc_xorigin, toy + rc->rc_yorigin,
rc->rc_emuwidth, rc->rc_emuheight - toy,
RAS_SRC, rc->rc_sp, rc->rc_xorigin, fromy + rc->rc_yorigin);
raster_op(rc->rc_sp, rc->rc_xorigin, fromy + rc->rc_yorigin,
rc->rc_emuwidth, rc->rc_font->height * n,
rc->rc_ras_blank, (struct raster *) 0, 0, 0);
}
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