4f85a1eb76
Change-Id: If881ec130833c7e7e62caa3d31e350a531f5bc8e Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/12398 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/* Public Domain Curses */
|
|
|
|
#include <curspriv.h>
|
|
|
|
RCSID("$Id: scroll.c,v 1.36 2008/07/13 16:08:18 wmcbrine Exp $")
|
|
|
|
/*man-start**************************************************************
|
|
|
|
Name: scroll
|
|
|
|
Synopsis:
|
|
int scroll(WINDOW *win);
|
|
int scrl(int n);
|
|
int wscrl(WINDOW *win, int n);
|
|
|
|
Description:
|
|
scroll() causes the window to scroll up one line. This involves
|
|
moving the lines in the window data strcture.
|
|
|
|
With a positive n, scrl() and wscrl() scroll the window up n
|
|
lines (line i + n becomes i); otherwise they scroll the window
|
|
down n lines.
|
|
|
|
For these functions to work, scrolling must be enabled via
|
|
scrollok(). Note also that scrolling is not allowed if the
|
|
supplied window is a pad.
|
|
|
|
Return Value:
|
|
All functions return OK on success and ERR on error.
|
|
|
|
Portability X/Open BSD SYS V
|
|
scroll Y Y Y
|
|
scrl Y - 4.0
|
|
wscrl Y - 4.0
|
|
|
|
**man-end****************************************************************/
|
|
|
|
int wscrl(WINDOW *win, int n)
|
|
{
|
|
int i, l, dir, start, end;
|
|
chtype blank, *temp;
|
|
|
|
/* Check if window scrolls. Valid for window AND pad */
|
|
|
|
if (!win || !win->_scroll || !n)
|
|
return ERR;
|
|
|
|
blank = win->_bkgd;
|
|
|
|
if (n > 0)
|
|
{
|
|
start = win->_tmarg;
|
|
end = win->_bmarg;
|
|
dir = 1;
|
|
}
|
|
else
|
|
{
|
|
start = win->_bmarg;
|
|
end = win->_tmarg;
|
|
dir = -1;
|
|
}
|
|
|
|
for (l = 0; l < (n * dir); l++)
|
|
{
|
|
temp = win->_y[start];
|
|
|
|
/* re-arrange line pointers */
|
|
|
|
for (i = start; i != end; i += dir)
|
|
win->_y[i] = win->_y[i + dir];
|
|
|
|
win->_y[end] = temp;
|
|
|
|
/* make a blank line */
|
|
|
|
for (i = 0; i < win->_maxx; i++)
|
|
*temp++ = blank;
|
|
}
|
|
|
|
touchline(win, win->_tmarg, win->_bmarg - win->_tmarg + 1);
|
|
|
|
PDC_sync(win);
|
|
return OK;
|
|
}
|
|
|
|
int scrl(int n)
|
|
{
|
|
PDC_LOG(("scrl() - called\n"));
|
|
|
|
return wscrl(stdscr, n);
|
|
}
|
|
|
|
int scroll(WINDOW *win)
|
|
{
|
|
PDC_LOG(("scroll() - called\n"));
|
|
|
|
return wscrl(win, 1);
|
|
}
|