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TO_UIS.C
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1993-04-18
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/*
Copyright (c) 1992 Heinz W. Werntges. All rights reserved.
Distributed by Free Software Foundation, Inc.
This file is part of HP2xx.
HP2xx is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
to anyone for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing. Refer
to the GNU General Public License, Version 2 or later, for full details.
Everyone is granted permission to copy, modify and redistribute
HP2xx, but only under the conditions described in the GNU General Public
License. A copy of this license is supposed to have been
given to you along with HP2xx so you can know your rights and
responsibilities. It should be in a file named COPYING. Among other
things, the copyright notice and this notice must be preserved on all
copies.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
/** to_uis.c: VAX/VMS UIS previewer of project "hp2xx"
**
** 92/04/15 V 1.00 HWW Originating, based on mandel.c (V 1.02)
** Raw coding, not tested yet!
** 92/04/24 V 1.01 HWW Tested and accelerated on uVAX, VMS 4.7
** 92/04/27 V 1.02 HWW Cleaned up
** 92/05/25 V 1.02b HWW Abort if color mode (due to lack of
** test facilities) -- Color support desired!
**
** NOTE: Due to lack of testing facilities, I will not be able to maintain
** this file any longer. Volunteers are welcome!
** If none will be found, I'll move this file to ../extras soon.
**/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <descrip.h>
#include <uisentry.h>
#include <uisusrdef.h>
#include "bresnham.h"
#include "hp2xx.h"
void PicBuf_to_UIS (PicBuf *picbuf, PAR *p)
{
int byte_c, xoff, yoff;
unsigned long row_c, x1, x2, rw, rh, bpp, zero=0, two=2;
RowBuf *row;
float x0f, y0f, x1f, y1f, w, h;
int c_old, c_new, i;
unsigned vd_id, wd_id;
char *target = "sys$workstation";
static float intens[2] = {0.0, 1.0};
static unsigned atb = 1;
struct dsc$descriptor_s s_desc;
if (picbuf->depth > 1)
{
fprintf(stderr, "\nUIS preview does not support colors yet -- sorry\n");
free_PicBuf (picbuf, p->swapfile);
exit (ERROR);
}
if (!p->quiet)
{
fprintf(stderr, "\nUIS preview follows\n");
fprintf(stderr, "Press <return> to end\n");
}
xoff = p->xoff * p->dpi_x / 25.4;
yoff = p->yoff * p->dpi_y / 25.4;
if ((!p->quiet) &&
(((picbuf->nb << 3) + xoff > 1024) || (picbuf->nr + yoff > 1024)) )
{
fprintf(stderr, "\n\007WARNING: Picture won't fit!\n");
fprintf(stderr, "Current range: (%d..%d) x (%d..%d) pels\n",
xoff, (picbuf->nb << 3) + xoff, yoff, picbuf->nr + yoff);
fprintf(stderr, "Continue anyway (y/n)?: ");
if (toupper(getchar()) != 'Y')
return;
}
x0f = y0f = 0.0; /* No offsets yet */
x1f = (float) (picbuf->nb << 3);
y1f = (float) picbuf->nr;
w = (float) p->width / 10.0; /* VAX needs cm, not mm */
h = (float) p->height/ 10.0;
vd_id = uis$create_display (&x0f, &y0f, &x1f, &y1f,&w, &h);
uis$disable_display_list (&vd_id);
uis$set_intensities (&vd_id, &zero, &two, intens);
s_desc.dsc$w_length = strlen (target);
s_desc.dsc$a_pointer= target;
s_desc.dsc$b_class = DSC$K_CLASS_S;
s_desc.dsc$b_dtype = DSC$K_DTYPE_T;
wd_id = uis$create_window (&vd_id,&s_desc);
x1 = 0;
x2 = picbuf->nc;
rw = picbuf->nc;
rh = 1;
bpp = 1;
for (row_c = 0; row_c < picbuf->nr; row_c++) /* for all pixel rows */
{
/**
** Unfortunately, we need a bit reversal in each byte here:
**/
row = get_RowBuf (picbuf, row_c);
for (byte_c=0; byte_c < picbuf->nb; byte_c++)
{
c_old = row->buf[byte_c];
if (c_old == 0) /* all white */
continue;
if (c_old == 0xff) /* all black */
continue;
for (i=0, c_new=0; ; )
{
if (c_old & 1)
c_new |= 1;
if (++i == 8) /* 8 bits, 7 shifts */
break;
c_new <<= 1;
c_old >>= 1;
}
row->buf[byte_c] = c_new;
}
uisdc$image(&wd_id, &atb, &x1, &row_c, &x2, &row_c,
&rw, &rh, &bpp, row->buf);
}
getchar();
uis$delete_display (&vd_id);
}