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-rw-r--r--usr.bin/window/wwscroll.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/usr.bin/window/wwscroll.c b/usr.bin/window/wwscroll.c
deleted file mode 100644
index d0641a1e69c7..000000000000
--- a/usr.bin/window/wwscroll.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * Copyright (c) 1983, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Edward Wang at The University of California, Berkeley.
- *
- * 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. 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, Berkeley and its contributors.
- * 4. 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.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)wwscroll.c 8.1 (Berkeley) 6/6/93";
-static char rcsid[] =
- "$FreeBSD$";
-#endif /* not lint */
-
-#include "ww.h"
-#include "tt.h"
-
-wwscroll(w, n)
-register struct ww *w;
-int n;
-{
- register dir;
- register top;
-
- if (n == 0)
- return;
- dir = n < 0 ? -1 : 1;
- top = w->ww_b.t - n;
- if (top > w->ww_w.t)
- top = w->ww_w.t;
- else if (top + w->ww_b.nr < w->ww_w.b)
- top = w->ww_w.b - w->ww_b.nr;
- n = abs(top - w->ww_b.t);
- if (n < w->ww_i.nr) {
- while (--n >= 0) {
- (void) wwscroll1(w, w->ww_i.t, w->ww_i.b, dir, 0);
- w->ww_buf += dir;
- w->ww_b.t -= dir;
- w->ww_b.b -= dir;
- }
- } else {
- w->ww_buf -= top - w->ww_b.t;
- w->ww_b.t = top;
- w->ww_b.b = top + w->ww_b.nr;
- wwredrawwin(w);
- }
-}
-
-/*
- * Scroll one line, between 'row1' and 'row2', in direction 'dir'.
- * Don't adjust ww_scroll.
- * And don't redraw 'leaveit' lines.
- */
-wwscroll1(w, row1, row2, dir, leaveit)
-register struct ww *w;
-int row1, row2, dir;
-int leaveit;
-{
- register i;
- int row1x, row2x;
- int nvis;
- int nvismax;
- int scrolled = 0;
-
- /*
- * See how many lines on the screen are affected.
- * And calculate row1x, row2x, and left at the same time.
- */
- for (i = row1; i < row2 && w->ww_nvis[i] == 0; i++)
- ;
- if (i >= row2) /* can't do any fancy stuff */
- goto out;
- row1x = i;
- for (i = row2 - 1; i >= row1 && w->ww_nvis[i] == 0; i--)
- ;
- if (i <= row1x)
- goto out; /* just one line is easy */
- row2x = i + 1;
-
- /*
- * See how much of this window is visible.
- */
- nvismax = wwncol * (row2x - row1x);
- nvis = 0;
- for (i = row1x; i < row2x; i++)
- nvis += w->ww_nvis[i];
-
- /*
- * If it's a good idea to scroll and the terminal can, then do it.
- */
- if (nvis < nvismax / 2)
- goto no_scroll; /* not worth it */
- if ((dir > 0 ? tt.tt_scroll_down == 0 : tt.tt_scroll_up == 0) ||
- (tt.tt_scroll_top != row1x || tt.tt_scroll_bot != row2x - 1) &&
- tt.tt_setscroll == 0)
- if (tt.tt_delline == 0 || tt.tt_insline == 0)
- goto no_scroll;
- xxscroll(dir, row1x, row2x);
- scrolled = 1;
- /*
- * Fix up the old screen.
- */
- {
- register union ww_char *tmp;
- register union ww_char **cpp, **cqq;
-
- if (dir > 0) {
- cpp = &wwos[row1x];
- cqq = cpp + 1;
- tmp = *cpp;
- for (i = row2x - row1x; --i > 0;)
- *cpp++ = *cqq++;
- *cpp = tmp;
- } else {
- cpp = &wwos[row2x];
- cqq = cpp - 1;
- tmp = *cqq;
- for (i = row2x - row1x; --i > 0;)
- *--cpp = *--cqq;
- *cqq = tmp;
- }
- for (i = wwncol; --i >= 0;)
- tmp++->c_w = ' ';
- }
-
-no_scroll:
- /*
- * Fix the new screen.
- */
- if (nvis == nvismax) {
- /*
- * Can shift whole lines.
- */
- if (dir > 0) {
- {
- register union ww_char *tmp;
- register union ww_char **cpp, **cqq;
-
- cpp = &wwns[row1x];
- cqq = cpp + 1;
- tmp = *cpp;
- for (i = row2x - row1x; --i > 0;)
- *cpp++ = *cqq++;
- *cpp = tmp;
- }
- if (scrolled) {
- register char *p, *q;
-
- p = &wwtouched[row1x];
- q = p + 1;
- for (i = row2x - row1x; --i > 0;)
- *p++ = *q++;
- *p |= WWU_TOUCHED;
- } else {
- register char *p;
-
- p = &wwtouched[row1x];
- for (i = row2x - row1x; --i >= 0;)
- *p++ |= WWU_TOUCHED;
- }
- wwredrawwin1(w, row1, row1x, dir);
- wwredrawwin1(w, row2x - 1, row2 - leaveit, dir);
- } else {
- {
- register union ww_char *tmp;
- register union ww_char **cpp, **cqq;
-
- cpp = &wwns[row2x];
- cqq = cpp - 1;
- tmp = *cqq;
- for (i = row2x - row1x; --i > 0;)
- *--cpp = *--cqq;
- *cqq = tmp;
- }
- if (scrolled) {
- register char *p, *q;
-
- p = &wwtouched[row2x];
- q = p - 1;
- for (i = row2x - row1x; --i > 0;)
- *--p = *--q;
- *q |= WWU_TOUCHED;
- } else {
- register char *p;
-
- p = &wwtouched[row1x];
- for (i = row2x - row1x; --i >= 0;)
- *p++ |= WWU_TOUCHED;
- }
- wwredrawwin1(w, row1 + leaveit, row1x + 1, dir);
- wwredrawwin1(w, row2x, row2, dir);
- }
- } else {
- if (scrolled) {
- register char *p;
-
- p = &wwtouched[row1x];
- for (i = row2x - row1x; --i >= 0;)
- *p++ |= WWU_TOUCHED;
- }
-out:
- if (dir > 0)
- wwredrawwin1(w, row1, row2 - leaveit, dir);
- else
- wwredrawwin1(w, row1 + leaveit, row2, dir);
- }
- return scrolled;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-17 17:18:23 +0000