/* $NetBSD: wscons_rops.c,v 1.11 2005/12/11 12:24:12 christos 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. 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
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wscons_rops.c,v 1.11 2005/12/11 12:24:12 christos Exp $");

#include <sys/param.h>
#include <sys/device.h>

#include <dev/rcons/raster.h>
#include <dev/wscons/wscons_raster.h>
#include <dev/wscons/wsdisplayvar.h>

/*
 * Paint (or unpaint) the cursor.
 * Pays no lip service to hardware cursors.
 */
void
rcons_cursor(void *id, int on, int row, int col)
{
        struct rcons *rc = id;
        int x, y;

        /* turn the cursor off */
        if (!on) {
                /* make sure it's on */
                if ((rc->rc_bits & RC_CURSOR) == 0)
                        return;

                row = *rc->rc_crowp;
                col = *rc->rc_ccolp;
        } else {
                /* unpaint the old copy. */
                *rc->rc_crowp = row;
                *rc->rc_ccolp = col;
        }

        x = col * rc->rc_font->width + rc->rc_xorigin;
        y = 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 ^= RC_CURSOR;
}

int
rcons_mapchar(void *id, int uni, unsigned int *index)
{

        if (uni < 128) {
                *index = uni;
                return (5);
        }
        *index = ' ';
        return (0);
}

/*
 * Actually write a string to the frame buffer.
 */
void
rcons_putchar(void *id, int row, int col, u_int uc, long attr)
{
        struct rcons *rc = id;
        int x, y, op;
        u_char help;

        x = col * rc->rc_font->width + rc->rc_xorigin;
        y = row * rc->rc_font->height + rc->rc_font_ascent + rc->rc_yorigin;

        op = RAS_SRC;
        if ((attr != 0) ^ ((rc->rc_bits & RC_INVERT) != 0))
                op = RAS_NOT(op);
        help = uc & 0xff;
        raster_textn(rc->rc_sp, x, y, op, rc->rc_font, &help, 1);
}

/*
 * Possibly change to white-on-black or black-on-white modes.
 */
void
rcons_invert(void *id, int inverted)
{
        struct rcons *rc = id;

        if (((rc->rc_bits & RC_INVERT) != 0) ^ inverted) {
                /* 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_bits ^= RC_INVERT;
        }
}

/*
 * Copy columns (characters) in a row (line).
 */
void
rcons_copycols(void *id, int row, int srccol, int dstcol, int ncols)
{
        struct rcons *rc = id;
        int y, srcx, dstx, nx;

        y = rc->rc_yorigin + rc->rc_font->height * row;
        srcx = rc->rc_xorigin + rc->rc_font->width * srccol;
        dstx = rc->rc_xorigin + rc->rc_font->width * dstcol;
        nx = rc->rc_font->width * ncols;

        raster_op(rc->rc_sp, dstx, y,
            nx, rc->rc_font->height, RAS_SRC,
            rc->rc_sp, srcx, y);
}

/*
 * Clear columns (characters) in a row (line).
 */
void
rcons_erasecols(void *id, int row, int startcol, int ncols, long fillattr)
{
        struct rcons *rc = id;
        int y, startx, nx, op;

        y = rc->rc_yorigin + rc->rc_font->height * row;
        startx = rc->rc_xorigin + rc->rc_font->width * startcol;
        nx = rc->rc_font->width * ncols;

        op = RAS_CLEAR;
        if ((fillattr != 0) ^ ((rc->rc_bits & RC_INVERT) != 0))
                op = RAS_NOT(op);
        raster_op(rc->rc_sp, startx, y,
            nx, rc->rc_font->height, op,
            (struct raster *) 0, 0, 0);
}

/*
 * Copy rows (lines).
 */
void
rcons_copyrows(void *id, int srcrow, int dstrow, int nrows)
{
        struct rcons *rc = id;
        int srcy, dsty, ny;

        srcy = rc->rc_yorigin + rc->rc_font->height * srcrow;
        dsty = rc->rc_yorigin + rc->rc_font->height * dstrow;
        ny = rc->rc_font->height * nrows;

        raster_op(rc->rc_sp, rc->rc_xorigin, dsty,
            rc->rc_raswidth, ny, RAS_SRC,
            rc->rc_sp, rc->rc_xorigin, srcy);
}

/*
 * Erase rows (lines).
 */
void
rcons_eraserows(void *id, int startrow, int nrows, long fillattr)
{
        struct rcons *rc = id;
        int starty, ny, op;

        starty = rc->rc_yorigin + rc->rc_font->height * startrow;
        ny = rc->rc_font->height * nrows;

        op = RAS_CLEAR;
        if ((fillattr != 0) ^ ((rc->rc_bits & RC_INVERT) != 0))
                op = RAS_NOT(op);
        raster_op(rc->rc_sp, rc->rc_xorigin, starty,
            rc->rc_raswidth, ny, op,
            (struct raster *) 0, 0, 0);
}

int
rcons_allocattr(void *id, int fg, int bg, int flags, long *attrp)
{
        if (flags & (WSATTR_HILIT | WSATTR_BLINK |
                     WSATTR_UNDERLINE | WSATTR_WSCOLORS))
                return (EINVAL);
        if (flags & WSATTR_REVERSE)
                *attrp = 1;
        else
                *attrp = 0;
        return (0);
}