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line.c revision 1.2 
      1 /*	$NetBSD: line.c,v 1.2 2001/02/05 21:56:36 jdc Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998-1999 Brett Lymn
      5  *                         (blymn (at) baea.com.au, brett_lymn (at) yahoo.com.au)
      6  * All rights reserved.
      7  *
      8  * This code has been donated to The NetBSD Foundation by the Author.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. The name of the author may not be used to endorse or promote products
     16  *    derived from this software withough specific prior written permission
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  *
     29  *
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __RCSID("$NetBSD: line.c,v 1.2 2001/02/05 21:56:36 jdc Exp $");
     35 #endif				/* not lint */
     36 
     37 #include "curses.h"
     38 #include "curses_private.h"
     39 
     40 /*
     41  * hline --
     42  *    Draw a horizontal line of character c on stdscr.
     43  */
     44 int
     45 hline(chtype ch, int count)
     46 {
     47 	return whline(stdscr, ch, count);
     48 }
     49 
     50 /*
     51  * mvhline --
     52  *    Move to location (y, x) and draw a horizontal line of character c
     53  *    on stdscr.
     54  */
     55 int
     56 mvhline(int y, int x, chtype ch, int count)
     57 {
     58 	return mvwhline(stdscr, y, x, ch, count);
     59 }
     60 
     61 /*
     62  * mvwhline --
     63  *    Move to location (y, x) and draw a horizontal line of character c
     64  *    in the given window.
     65  */
     66 int
     67 mvwhline(WINDOW *win, int y, int x, chtype ch, int count)
     68 {
     69 	if (wmove(win, y, x) == ERR)
     70 		return ERR;
     71 
     72 	return whline(win, ch, count);
     73 }
     74 
     75 /*
     76  * whline --
     77  *    Draw a horizontal line of character c in the given window moving
     78  *    towards the rightmost column.  At most count characters are drawn
     79  *    or until the edge of the screen, whichever comes first.
     80  */
     81 int
     82 whline(WINDOW *win, chtype ch, int count)
     83 {
     84 	int ocurx, n, i;
     85 
     86 	n = min(count, win->maxx - win->curx);
     87 	ocurx = win->curx;
     88 
     89 	if (!(ch & __CHARTEXT))
     90 		ch |= ACS_HLINE;
     91 	for (i = 0; i < n; i++)
     92 		mvwaddch(win, win->cury, ocurx + i, ch);
     93 
     94 	wmove(win, win->cury, ocurx);
     95 	return OK;
     96 }
     97 
     98 /*
     99  * vline --
    100  *    Draw a vertical line of character ch on stdscr.
    101  */
    102 int
    103 vline(chtype ch, int count)
    104 {
    105 	return wvline(stdscr, ch, count);
    106 }
    107 
    108 /*
    109  * mvvline --
    110  *   Move to the given location an draw a vertical line of character ch.
    111  */
    112 int
    113 mvvline(int y, int x, chtype ch, int count)
    114 {
    115 	return mvwvline(stdscr, y, x, ch, count);
    116 }
    117 
    118 /*
    119  * mvwvline --
    120  *    Move to the given location and draw a vertical line of character ch
    121  *    on the given window.
    122  */
    123 int
    124 mvwvline(WINDOW *win, int y, int x, chtype ch, int count)
    125 {
    126 	if (wmove(win, y, x) == ERR)
    127 		return ERR;
    128 
    129 	return wvline(win, ch, count);
    130 }
    131 
    132 /*
    133  * wvline --
    134  *    Draw a vertical line of character ch in the given window moving
    135  *    towards the bottom of the screen.  At most count characters are drawn
    136  *    or until the edge of the screen, whichever comes first.
    137  */
    138 int
    139 wvline(WINDOW *win, chtype ch, int count)
    140 {
    141 	int ocury, ocurx, n, i;
    142 
    143 	n = min(count, win->maxy - win->cury);
    144 	ocury = win->cury;
    145 	ocurx = win->curx;
    146 
    147 	if (!(ch & __CHARTEXT))
    148 		ch |= ACS_VLINE;
    149 	for (i = 0; i < n; i++)
    150 		mvwaddch(win, ocury + i, ocurx, ch);
    151 
    152 	wmove(win, ocury, ocurx);
    153 	return OK;
    154 }
    155