Category : C++ Source Code
Archive   : CURSESP.ZIP
Filename : BOXES.C

/****************************************************************/
/* Box() routines 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 (...mcvax!enea!infovax!bl) */
/****************************************************************/
/* 1.0: Release: 870515 */
/* 1.2: Max limits off by 1. Fixed thanks to S. Creps: 881002 */
/* 1.3: MSC '-W3', Turbo'C' '-w -w-pro' checks. Support */
/* for border(), wborder() functions: 881005 */
/****************************************************************/

#include
#include

char _curses_boxes_rcsid[] = "@(#)boxes.c v1.3 - 881005";

/****************************************************************/
/* wbox(win,ymin,xmin,ymax,xmax,v,h) draws a box in window */
/* 'win', enclosing the area xmin-xmax and ymin-xmax. If */
/* xmax and/or ymax is 0, the window max value is used. 'v' and */
/* 'h' are the vertical and horizontal characters to use. If */
/* 'v' and 'h' are PC grapics lines, wbox will make the corners */
/* in a pretty way. */
/****************************************************************/

int wbox(WINDOW *win, int ymin, int xmin, int ymax,
int xmax, int v, int h)
{
static int l, r, t, b, tl, tr, bl,br; /* border chars */
int i;

if (ymax == 0)
ymax = win->_maxy - 1;
if (xmax == 0)
xmax = win->_maxx - 1;

if (ymin >= win->_maxy || ymax > win->_maxy ||
xmin >= win->_maxx || xmax > win->_maxx ||
ymin >= ymax || xmin >= xmax
)
return(ERR);

l = r = v & 0xff; /* get rid of sign-extended int */
t = b = h & 0xff;
tl = tr = bl = br = v; /* default same as vertical */

if (l == 0xba) /* vertical double bars */
{
if (t == 0xcd) /* horizontal too? */
{tl=0xc9;tr=0xbb;bl=0xc8;br=0xbc;}/* use double bar corners */
else
{tl=0xd6;tr=0xb7;bl=0xd3;br=0xbd;}/* use hor-s vert-d corners */
} /* if */

if (l == 0xb3) /* vertical single bars */
{
if (t == 0xcd)
{tl=0xd5;tr=0xb8;bl=0xd4;br=0xbe;}/* horizontal double bars */
else
{tl=0xda;tr=0xbf;bl=0xc0;br=0xd9;}/* use hor-s vert-s bars */
} /* if */

if (win->_borderchars[0]) /* border() settings override parms */
l = win->_borderchars[0];
if (win->_borderchars[3])
r = win->_borderchars[1];
if (win->_borderchars[3])
t = win->_borderchars[2];
if (win->_borderchars[3])
b = win->_borderchars[3];
if (win->_borderchars[4])
tl = win->_borderchars[4];
if (win->_borderchars[5])
tr = win->_borderchars[5];
if (win->_borderchars[6])
bl = win->_borderchars[6];
if (win->_borderchars[7])
br = win->_borderchars[7];

for (i = xmin+1;i <= xmax-1;i++)
{
win->_line[ymin][i] = t | win->_attrs;
win->_line[ymax][i] = b | win->_attrs;
}
for (i = ymin+1;i <= ymax-1;i++)
{
win->_line[i][xmin] = l | win->_attrs;
win->_line[i][xmax] = r | win->_attrs;
}
win->_line[ymin][xmin] = tl | win->_attrs;
win->_line[ymin][xmax] = tr | win->_attrs;
win->_line[ymax][xmin] = bl | win->_attrs;
win->_line[ymax][xmax] = br | win->_attrs;

for (i=ymin; i <= ymax ; i++)
{
if (win->_minchng[i] == _NO_CHANGE)
{
win->_minchng[i] = xmin;
win->_maxchng[i] = xmax;
} /* if */
else
{
win->_minchng[i] = min(win->_minchng[i], xmin);
win->_maxchng[i] = max(win->_maxchng[i], xmax);
} /* else */
} /* for */
return(OK);
} /* box */

/****************************************************************/
/* box(win,v,h) draws a box around window window 'win'. 'v' and */
/* 'h' are the vertical and horizontal characters to use. */
/****************************************************************/

void box(WINDOW *win, int v, int h)
{
wbox(win,0,0,0,0,v,h);
} /* box */