ncurses/lib_box.c

   1
   2 /***************************************************************************
   3 *                            COPYRIGHT NOTICE                              *
   4 ****************************************************************************
   5 *                ncurses is copyright (C) 1992-1995                        *
   6 *                          Zeyd M. Ben-Halim                               *
   7 *                          zmbenhal@netcom.com                             *
   8 *                          Eric S. Raymond                                 *
   9 *                          esr@snark.thyrsus.com                           *
  10 *                                                                          *
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  21
  22
  23
  24 /*
  25 **      lib_box.c
  26 **
  27 **      line drawing routines:
  28 **      wborder()
  29 **      whline()
  30 **      wvline()
  31 **
  32 */
  33
  34 #include <curses.priv.h>
  35
  36 MODULE_ID("$Id: lib_box.c,v 1.7 1997/04/12 17:51:49 tom Exp $")
  37
  38 int wborder(WINDOW *win, chtype ls, chtype rs, chtype ts,
  39         chtype bs, chtype tl, chtype tr, chtype bl, chtype br)
  40 {
  41 short i;
  42 short endx, endy;
  43
  44     T((T_CALLED("wborder(%p,%s,%s,%s,%s,%s,%s,%s,%s)"),
  45         win,
  46         _tracechtype2(1,ls),
  47         _tracechtype2(2,rs),
  48         _tracechtype2(3,ts),
  49         _tracechtype2(4,bs),
  50         _tracechtype2(5,tl),
  51         _tracechtype2(6,tr),
  52         _tracechtype2(7,bl),
  53         _tracechtype2(8,br)));
  54
  55         if (ls == 0) ls = ACS_VLINE;
  56         if (rs == 0) rs = ACS_VLINE;
  57         if (ts == 0) ts = ACS_HLINE;
  58         if (bs == 0) bs = ACS_HLINE;
  59         if (tl == 0) tl = ACS_ULCORNER;
  60         if (tr == 0) tr = ACS_URCORNER;
  61         if (bl == 0) bl = ACS_LLCORNER;
  62         if (br == 0) br = ACS_LRCORNER;
  63
  64         ls = _nc_render(win, ls);
  65         rs = _nc_render(win, rs);
  66         ts = _nc_render(win, ts);
  67         bs = _nc_render(win, bs);
  68         tl = _nc_render(win, tl);
  69         tr = _nc_render(win, tr);
  70         bl = _nc_render(win, bl);
  71         br = _nc_render(win, br);
  72
  73         T(("using %#lx, %#lx, %#lx, %#lx, %#lx, %#lx, %#lx, %#lx", ls, rs, ts, bs, tl, tr, bl, br));
  74
  75         endx = win->_maxx;
  76         endy = win->_maxy;
  77
  78         for (i = 0; i <= endx; i++) {
  79                 win->_line[0].text[i] = ts;
  80                 win->_line[endy].text[i] = bs;
  81         }
  82         win->_line[endy].firstchar = win->_line[0].firstchar = 0;
  83         win->_line[endy].lastchar = win->_line[0].lastchar = endx;
  84
  85         for (i = 0; i <= endy; i++) {
  86                 win->_line[i].text[0] =  ls;
  87                 win->_line[i].text[endx] =  rs;
  88                 win->_line[i].firstchar = 0;
  89                 win->_line[i].lastchar = endx;
  90         }
  91         win->_line[0].text[0] = tl;
  92         win->_line[0].text[endx] = tr;
  93         win->_line[endy].text[0] = bl;
  94         win->_line[endy].text[endx] = br;
  95
  96         _nc_synchook(win);
  97         returnCode(OK);
  98 }
  99
 100 int whline(WINDOW *win, chtype ch, int n)
 101 {
 102 short line;
 103 short start;
 104 short end;
 105
 106         T((T_CALLED("whline(%p,%s,%d)"), win, _tracechtype(ch), n));
 107
 108         line = win->_cury;
 109         start = win->_curx;
 110         end = start + n - 1;
 111         if (end > win->_maxx)
 112                 end = win->_maxx;
 113
 114         if (win->_line[line].firstchar == _NOCHANGE || win->_line[line].firstchar > start)
 115                 win->_line[line].firstchar = start;
 116         if (win->_line[line].lastchar == _NOCHANGE || win->_line[line].lastchar < start)
 117                 win->_line[line].lastchar = end;
 118
 119         if (ch == 0)
 120                 ch = ACS_HLINE;
 121         ch = _nc_render(win, ch);
 122
 123         while ( end >= start) {
 124                 win->_line[line].text[end] = ch;
 125                 end--;
 126         }
 127
 128         returnCode(OK);
 129 }
 130
 131 int wvline(WINDOW *win, chtype ch, int n)
 132 {
 133 short row, col;
 134 short end;
 135
 136         T((T_CALLED("wvline(%p,%s,%d)"), win, _tracechtype(ch), n));
 137
 138         row = win->_cury;
 139         col = win->_curx;
 140         end = row + n - 1;
 141         if (end > win->_maxy)
 142                 end = win->_maxy;
 143
 144         if (ch == 0)
 145                 ch = ACS_VLINE;
 146         ch = _nc_render(win, ch);
 147
 148         while(end >= row) {
 149                 win->_line[end].text[col] = ch;
 150                 if (win->_line[end].firstchar == _NOCHANGE || win->_line[end].firstchar > col)
 151                         win->_line[end].firstchar = col;
 152                 if (win->_line[end].lastchar == _NOCHANGE || win->_line[end].lastchar < col)
 153                         win->_line[end].lastchar = col;
 154                 end--;
 155         }
 156
 157         _nc_synchook(win);
 158         returnCode(OK);
 159 }
 160