sys/dev/wscons/wscons_rinit.c

   1 /* $NetBSD: wscons_rinit.c,v 1.4.16.3 2004/09/21 13:34:29 skrll Exp $ */
   2
   3 /*
   4  * Copyright (c) 1991, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This software was developed by the Computer Systems Engineering group
   8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   9  * contributed to Berkeley.
  10  *
  11  * All advertising materials mentioning features or use of this software
  12  * must display the following acknowledgement:
  13  *      This product includes software developed by the University of
  14  *      California, Lawrence Berkeley Laboratory.
  15  *
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  * 1. Redistributions of source code must retain the above copyright
  20  *    notice, this list of conditions and the following disclaimer.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions and the following disclaimer in the
  23  *    documentation and/or other materials provided with the distribution.
  24  * 3. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  *      @(#)rcons_font.c        8.1 (Berkeley) 6/11/93
  41  */
  42
  43 #include <sys/cdefs.h>
  44 __KERNEL_RCSID(0, "$NetBSD: wscons_rinit.c,v 1.4.16.3 2004/09/21 13:34:29 skrll Exp $");
  45
  46 #include <sys/param.h>
  47 #include <sys/systm.h>
  48 #include <sys/device.h>
  49
  50 #include <dev/rcons/raster.h>
  51 #include <dev/wscons/wscons_raster.h>
  52
  53 #include <dev/wscons/wscons_rfont.h>
  54
  55 void    rcons_initfont(struct rcons *, struct raster_font *);
  56
  57 void
  58 rcons_initfont(struct rcons *rc, struct raster_font *fp)
  59 {
  60         static int initfontdone;
  61
  62         rc->rc_font = fp;
  63
  64         /* Get distance to top and bottom of font from font origin */
  65         rc->rc_font_ascent = -(rc->rc_font->chars)['a'].homey;
  66
  67 #if !defined(MSBYTE_FIRST) && !defined(MSBIT_FIRST) /* XXX other cases */
  68         /* swap byte order on font data.  ick. */
  69         if (!initfontdone) {
  70                 int ch, i, n, bit;
  71                 u_int32_t *pix, npix;
  72
  73                 for (ch = 0; ch < 256; ch++) {
  74                         if (rc->rc_font->chars[ch].r == 0)
  75                                 continue;
  76
  77                         n = rc->rc_font->chars[ch].r->linelongs *
  78                             rc->rc_font->chars[ch].r->height;
  79                         pix = rc->rc_font->chars[ch].r->pixels;
  80
  81                         for (i = 0; i < n; i++) {
  82                                 npix = 0;
  83                                 for (bit = 0; bit < 32; bit++)
  84                                         if (pix[i] & (1 << bit))
  85                                                 npix |= (1 << (31 - bit));
  86                                 pix[i] = npix;
  87                         }
  88                 }
  89         }
  90 #endif
  91
  92         initfontdone = 1;
  93 }
  94
  95 void
  96 rcons_init(struct rcons *rc, int mrow, int mcol)
  97 {
  98         struct raster *rp = rc->rc_sp;
  99         int i;
 100
 101         rcons_initfont(rc, &gallant19);
 102
 103         i = rp->height / rc->rc_font->height;
 104         rc->rc_maxrow = min(i, mrow);
 105
 106         i = rp->width / rc->rc_font->width;
 107         rc->rc_maxcol = min(i, mcol);
 108
 109         /* Center emulator screen (but align x origin to 32 bits) */
 110         rc->rc_xorigin =
 111             ((rp->width - rc->rc_maxcol * rc->rc_font->width) / 2) & ~0x1f;
 112         rc->rc_yorigin =
 113             (rp->height - rc->rc_maxrow * rc->rc_font->height) / 2;
 114
 115         /* Raster width used for row copies */
 116         rc->rc_raswidth = rc->rc_maxcol * rc->rc_font->width;
 117         if (rc->rc_raswidth & 0x1f) {
 118                 /* Pad to 32 bits */
 119                 i = (rc->rc_raswidth + 0x1f) & ~0x1f;
 120                 /* Make sure width isn't too wide */
 121                 if (rc->rc_xorigin + i <= rp->width)
 122                         rc->rc_raswidth = i;
 123         }
 124
 125         rc->rc_bits = 0;
 126
 127         /* If cursor position given, assume it's there and drawn. */
 128         if (*rc->rc_crowp != -1 && *rc->rc_ccolp != -1)
 129                 rc->rc_bits |= RC_CURSOR;
 130 }