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wscons_rinit.c revision 1.3 
      1 /* $NetBSD: wscons_rinit.c,v 1.3 2001/10/13 15:56:15 augustss 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. All advertising materials mentioning features or use of this software
     25  *    must display the following acknowledgement:
     26  *	This product includes software developed by the University of
     27  *	California, Berkeley and its contributors.
     28  * 4. Neither the name of the University nor the names of its contributors
     29  *    may be used to endorse or promote products derived from this software
     30  *    without specific prior written permission.
     31  *
     32  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     33  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     34  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     35  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     36  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     40  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     41  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     42  * SUCH DAMAGE.
     43  *
     44  *	@(#)rcons_font.c	8.1 (Berkeley) 6/11/93
     45  */
     46 
     47 #include <sys/param.h>
     48 #include <sys/systm.h>
     49 #include <sys/device.h>
     50 
     51 #include <dev/rcons/raster.h>
     52 #include <dev/wscons/wscons_raster.h>
     53 
     54 #include <dev/wscons/wscons_rfont.h>
     55 
     56 void	rcons_initfont(struct rcons *, struct raster_font *);
     57 
     58 void
     59 rcons_initfont(struct rcons *rc, struct raster_font *fp)
     60 {
     61 	static int initfontdone;
     62 
     63 	rc->rc_font = fp;
     64 
     65 	/* Get distance to top and bottom of font from font origin */
     66 	rc->rc_font_ascent = -(rc->rc_font->chars)['a'].homey;
     67 
     68 #if !defined(MSBYTE_FIRST) && !defined(MSBIT_FIRST) /* XXX other cases */
     69 	/* swap byte order on font data.  ick. */
     70 	if (!initfontdone) {
     71 		int ch, i, n, bit;
     72 		u_int32_t *pix, npix;
     73 
     74 		for (ch = 0; ch < 256; ch++) {
     75 			if (rc->rc_font->chars[ch].r == 0)
     76 				continue;
     77 
     78 			n = rc->rc_font->chars[ch].r->linelongs *
     79 			    rc->rc_font->chars[ch].r->height;
     80 			pix = rc->rc_font->chars[ch].r->pixels;
     81 
     82 			for (i = 0; i < n; i++) {
     83 				npix = 0;
     84 				for (bit = 0; bit < 32; bit++)
     85 					if (pix[i] & (1 << bit))
     86 						npix |= (1 << (31 - bit));
     87 				pix[i] = npix;
     88 			}
     89 		}
     90 	}
     91 #endif
     92 
     93 	initfontdone = 1;
     94 }
     95 
     96 void
     97 rcons_init(struct rcons *rc, int mrow, int mcol)
     98 {
     99 	struct raster *rp = rc->rc_sp;
    100 	int i;
    101 
    102 	rcons_initfont(rc, &gallant19);
    103 
    104 	i = rp->height / rc->rc_font->height;
    105 	rc->rc_maxrow = min(i, mrow);
    106 
    107 	i = rp->width / rc->rc_font->width;
    108 	rc->rc_maxcol = min(i, mcol);
    109 
    110 	/* Center emulator screen (but align x origin to 32 bits) */
    111 	rc->rc_xorigin =
    112 	    ((rp->width - rc->rc_maxcol * rc->rc_font->width) / 2) & ~0x1f;
    113 	rc->rc_yorigin =
    114 	    (rp->height - rc->rc_maxrow * rc->rc_font->height) / 2;
    115 
    116 	/* Raster width used for row copies */
    117 	rc->rc_raswidth = rc->rc_maxcol * rc->rc_font->width;
    118 	if (rc->rc_raswidth & 0x1f) {
    119 		/* Pad to 32 bits */
    120 		i = (rc->rc_raswidth + 0x1f) & ~0x1f;
    121 		/* Make sure width isn't too wide */
    122 		if (rc->rc_xorigin + i <= rp->width)
    123 			rc->rc_raswidth = i;
    124 	}
    125 
    126 	rc->rc_bits = 0;
    127 
    128 	/* If cursor position given, assume it's there and drawn. */
    129 	if (*rc->rc_crowp != -1 && *rc->rc_ccolp != -1)
    130 		rc->rc_bits |= RC_CURSOR;
    131 }
    132