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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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vol_300
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332_01
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clrtoeol.c
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C/C++ Source or Header
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1990-01-05
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106 lines
/****************************************************************/
/* Wclrtoeol() routine of the PCcurses package */
/* */
/****************************************************************/
/* This version of curses is based on ncurses, a curses version */
/* originally written by Pavel Curtis at Cornell University. */
/* I have made substantial changes to make it run on IBM PC's, */
/* and therefore consider myself free to make it public domain. */
/* Bjorn Larsson (bl@infovox.se) */
/****************************************************************/
/* 1.4: Use of short wherever possible. Portability */
/* improvements, misspelled name of mvcrltoeol(): 900114 */
/* 1.3: MSC -W3, Turbo'C' -w -w-pro checkes: 881005 */
/* 1.2: Max limits off by 1. Fixed thanks to S. Creps: 880210 */
/* 1.0: Release: 870515 */
/****************************************************************/
#include <curses.h>
#include <curspriv.h>
char _curses_clrtoeol_rcsid[] = "@(#)clrtoeol.c v.1.4 - 900114";
/****************************************************************/
/* Wclrtoeol() fills the half of the cursor line to the right */
/* of the cursor in window 'win' with blanks. */
/****************************************************************/
int wclrtoeol(win)
WINDOW *win;
{
short *maxx;
short *ptr;
short *end;
static short y;
static short x;
static short minx;
static short blank;
y = win->_cury;
x = win->_curx;
blank = ' ' | (win->_attrs & ATR_MSK);
end = &win->_line[y][win->_maxx - 1];
minx = _NO_CHANGE;
maxx = &win->_line[y][x];
for (ptr = maxx; ptr <= end; ptr++)
{
if (*ptr != blank)
{
maxx = ptr;
if (minx == _NO_CHANGE)
minx = (int) (ptr - win->_line[y]);
*ptr = blank;
} /* if */
} /* for */
if (minx != _NO_CHANGE)
{
if ((win->_minchng[y] > minx) || (win->_minchng[y] == _NO_CHANGE))
win->_minchng[y] = minx;
if (win->_maxchng[y] < (int) (maxx - win->_line[y]))
win->_maxchng[y] = (int) (maxx - win->_line[y]);
} /* if */
return(OK);
} /* wclrtoeol */
/****************************************************************/
/* Clrtoeol() fills the half of the cursor line to the right */
/* of the cursor in stdscr with blanks. */
/****************************************************************/
int clrtoeol()
{
return(wclrtoeol(stdscr));
} /* clrtoeol */
/****************************************************************/
/* Mvclrtoeol() moves the cursor to a new position in stdscr */
/* and fills the right half of the cursor line with blanks. */
/****************************************************************/
int mvclrtoeol(y,x)
int y;
int x;
{
if (wmove(stdscr,y,x) == ERR)
return(ERR);
return(wclrtoeol(stdscr));
} /* mvclrtoeol */
/****************************************************************/
/* Mvwclrtoeol() moves the cursor to a new position in window */
/* 'win', and fills the right half of the cursor line with */
/* blanks. */
/****************************************************************/
int mvwclrtoeol(win,y,x)
WINDOW *win;
int y;
int x;
{
if (wmove(win,y,x) == ERR)
return(ERR);
return(wclrtoeol(win));
} /* mvwclrtoeol */