/* $NetBSD: wscons_rinit.c,v 1.8 2018/09/03 16:29:34 riastradh 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_font.c        8.1 (Berkeley) 6/11/93
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wscons_rinit.c,v 1.8 2018/09/03 16:29:34 riastradh Exp $");

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

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

#include <dev/wscons/wscons_rfont.h>

void    rcons_initfont(struct rcons *, struct raster_font *);

void
rcons_initfont(struct rcons *rc, struct raster_font *fp)
{
#if !defined(MSBYTE_FIRST) && !defined(MSBIT_FIRST) /* XXX other cases */
       static int initfontdone;
#endif

       rc->rc_font = fp;

       /* Get distance to top and bottom of font from font origin */
       rc->rc_font_ascent = -(rc->rc_font->chars)['a'].homey;

#if !defined(MSBYTE_FIRST) && !defined(MSBIT_FIRST) /* XXX other cases */
       /* swap byte order on font data.  ick. */
       if (!initfontdone) {
               int ch, i, n, bit;
               u_int32_t *pix, npix;

               for (ch = 0; ch < 256; ch++) {
                       if (rc->rc_font->chars[ch].r == 0)
                               continue;

                       n = rc->rc_font->chars[ch].r->linelongs *
                           rc->rc_font->chars[ch].r->height;
                       pix = rc->rc_font->chars[ch].r->pixels;

                       for (i = 0; i < n; i++) {
                               npix = 0;
                               for (bit = 0; bit < 32; bit++)
                                       if (pix[i] & (1 << bit))
                                               npix |= (1 << (31 - bit));
                               pix[i] = npix;
                       }
               }
       }

       initfontdone = 1;
#endif
}

void
rcons_init(struct rcons *rc, int mrow, int mcol)
{
       struct raster *rp = rc->rc_sp;
       int i;

       rcons_initfont(rc, &gallant19);

       i = rp->height / rc->rc_font->height;
       rc->rc_maxrow = uimin(i, mrow);

       i = rp->width / rc->rc_font->width;
       rc->rc_maxcol = uimin(i, mcol);

       /* Center emulator screen (but align x origin to 32 bits) */
       rc->rc_xorigin =
           ((rp->width - rc->rc_maxcol * rc->rc_font->width) / 2) & ~0x1f;
       rc->rc_yorigin =
           (rp->height - rc->rc_maxrow * rc->rc_font->height) / 2;

       /* Raster width used for row copies */
       rc->rc_raswidth = rc->rc_maxcol * rc->rc_font->width;
       if (rc->rc_raswidth & 0x1f) {
               /* Pad to 32 bits */
               i = (rc->rc_raswidth + 0x1f) & ~0x1f;
               /* Make sure width isn't too wide */
               if (rc->rc_xorigin + i <= rp->width)
                       rc->rc_raswidth = i;
       }

       rc->rc_bits = 0;

       /* If cursor position given, assume it's there and drawn. */
       if (*rc->rc_crowp != -1 && *rc->rc_ccolp != -1)
               rc->rc_bits |= RC_CURSOR;
}