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/* Public Domain Curses */

#include <curspriv.h>

RCSID("$Id: border.c,v 1.1 2009/05/10 08:29:53 jld Exp $")

/*man-start**************************************************************

  Name:                                                         border

  Synopsis:

        int border(chtype ls, chtype rs, chtype ts, chtype bs, chtype tl,

                   chtype tr, chtype bl, chtype br);

        int wborder(WINDOW *win, chtype ls, chtype rs, chtype ts,

                    chtype bs, chtype tl, chtype tr, chtype bl, chtype br);

        int box(WINDOW *win, chtype verch, chtype horch);

        int hline(chtype ch, int n);

        int vline(chtype ch, int n);

        int whline(WINDOW *win, chtype ch, int n);

        int wvline(WINDOW *win, chtype ch, int n);

        int mvhline(int y, int x, chtype ch, int n);

        int mvvline(int y, int x, chtype ch, int n);

        int mvwhline(WINDOW *win, int y, int x, chtype ch, int n);

        int mvwvline(WINDOW *win, int y, int x, chtype ch, int n);

        int border_set(const cchar_t *ls, const cchar_t *rs,

                       const cchar_t *ts, const cchar_t *bs,

                       const cchar_t *tl, const cchar_t *tr,

                       const cchar_t *bl, const cchar_t *br);

        int wborder_set(WINDOW *win, const cchar_t *ls, const cchar_t *rs,

                        const cchar_t *ts, const cchar_t *bs,

                        const cchar_t *tl, const cchar_t *tr,

                        const cchar_t *bl, const cchar_t *br);

        int box_set(WINDOW *win, const cchar_t *verch, const cchar_t *horch);

        int hline_set(const cchar_t *wch, int n);

        int vline_set(const cchar_t *wch, int n);

        int whline_set(WINDOW *win, const cchar_t *wch, int n);

        int wvline_set(WINDOW *win, const cchar_t *wch, int n);

        int mvhline_set(int y, int x, const cchar_t *wch, int n);

        int mvvline_set(int y, int x, const cchar_t *wch, int n);

        int mvwhline_set(WINDOW *win, int y, int x, const cchar_t *wch, int n);

        int mvwvline_set(WINDOW *win, int y, int x, const cchar_t *wch, int n);

  Description:

        border(), wborder(), and box() draw a border around the edge of

        the window. If any argument is zero, an appropriate default is

        used:

                ls      left side of border             ACS_VLINE

                rs      right side of border            ACS_VLINE

                ts      top side of border              ACS_HLINE

                bs      bottom side of border           ACS_HLINE

                tl      top left corner of border       ACS_ULCORNER

                tr      top right corner of border      ACS_URCORNER

                bl      bottom left corner of border    ACS_LLCORNER

                br      bottom right corner of border   ACS_LRCORNER

        hline() and whline() draw a horizontal line, using ch, starting

        from the current cursor position. The cursor position does not

        change. The line is at most n characters long, or as many as

        will fit in the window.

        vline() and wvline() draw a vertical line, using ch, starting

        from the current cursor position. The cursor position does not

        change. The line is at most n characters long, or as many as

        will fit in the window.

  Return Value:

        These functions return OK on success and ERR on error.

  Portability                                X/Open    BSD    SYS V

        border                                  Y       -      4.0

        wborder                                 Y       -      4.0

        box                                     Y       Y       Y

        hline                                   Y       -      4.0

        vline                                   Y       -      4.0

        whline                                  Y       -      4.0

        wvline                                  Y       -      4.0

        mvhline                                 Y

        mvvline                                 Y

        mvwhline                                Y

        mvwvline                                Y

        border_set                              Y

        wborder_set                             Y

        box_set                                 Y

        hline_set                               Y

        vline_set                               Y

        whline_set                              Y

        wvline_set                              Y

        mvhline_set                             Y

        mvvline_set                             Y

        mvwhline_set                            Y

        mvwvline_set                            Y

**man-end****************************************************************/

/* _attr_passthru() -- Takes a single chtype 'ch' and checks if the

   current attribute of window 'win', as set by wattrset(), and/or the

   current background of win, as set by wbkgd(), should by combined with

   it. Attributes set explicitly in ch take precedence. */

static chtype _attr_passthru(WINDOW *win, chtype ch)

{

    chtype attr;

    /* If the incoming character doesn't have its own attribute, then

       use the current attributes for the window. If the incoming

       character has attributes, but not a color component, OR the

       attributes to the current attributes for the window. If the

       incoming character has a color component, use only the attributes

       from the incoming character. */

    attr = ch & A_ATTRIBUTES;

    if (!(attr & A_COLOR))

        attr |= win->_attrs;

    /* wrs (4/10/93) -- Apply the same sort of logic for the window

       background, in that it only takes precedence if other color

       attributes are not there. */

    if (!(attr & A_COLOR))

        attr |= win->_bkgd & A_ATTRIBUTES;

    else

        attr |= win->_bkgd & (A_ATTRIBUTES ^ A_COLOR);

    ch = (ch & A_CHARTEXT) | attr;

    return ch;

}

int wborder(WINDOW *win, chtype ls, chtype rs, chtype ts, chtype bs,

            chtype tl, chtype tr, chtype bl, chtype br)

{

    int i, ymax, xmax;

    PDC_LOG(("wborder() - called\n"));

    if (!win)

        return ERR;

    ymax = win->_maxy - 1;

    xmax = win->_maxx - 1;

    ls = _attr_passthru(win, ls ? ls : ACS_VLINE);

    rs = _attr_passthru(win, rs ? rs : ACS_VLINE);

    ts = _attr_passthru(win, ts ? ts : ACS_HLINE);

    bs = _attr_passthru(win, bs ? bs : ACS_HLINE);

    tl = _attr_passthru(win, tl ? tl : ACS_ULCORNER);

    tr = _attr_passthru(win, tr ? tr : ACS_URCORNER);

    bl = _attr_passthru(win, bl ? bl : ACS_LLCORNER);

    br = _attr_passthru(win, br ? br : ACS_LRCORNER);

    for (i = 1; i < xmax; i++)

    {

        win->_y[0][i] = ts;

        win->_y[ymax][i] = bs;

    }

    for (i = 1; i < ymax; i++)

    {

        win->_y[i][0] = ls;

        win->_y[i][xmax] = rs;

    }

    win->_y[0][0] = tl;

    win->_y[0][xmax] = tr;

    win->_y[ymax][0] = bl;

    win->_y[ymax][xmax] = br;

    for (i = 0; i <= ymax; i++)

    {

        win->_firstch[i] = 0;

        win->_lastch[i] = xmax;

    }

    PDC_sync(win);

    return OK;

}

int border(chtype ls, chtype rs, chtype ts, chtype bs, chtype tl,

           chtype tr, chtype bl, chtype br)

{

    PDC_LOG(("border() - called\n"));

    return wborder(stdscr, ls, rs, ts, bs, tl, tr, bl, br);

}

int box(WINDOW *win, chtype verch, chtype horch)

{

    PDC_LOG(("box() - called\n"));

    return wborder(win, verch, verch, horch, horch, 0, 0, 0, 0);

}

int whline(WINDOW *win, chtype ch, int n)

{

    chtype *dest;

    int startpos, endpos;

    PDC_LOG(("whline() - called\n"));

    if (!win || n < 1)

        return ERR;

    startpos = win->_curx;

    endpos = min(startpos + n, win->_maxx) - 1;

    dest = win->_y[win->_cury];

    ch = _attr_passthru(win, ch ? ch : ACS_HLINE);

    for (n = startpos; n <= endpos; n++)

        dest[n] = ch;

    n = win->_cury;

    if (startpos < win->_firstch[n] || win->_firstch[n] == _NO_CHANGE)

        win->_firstch[n] = startpos;

    if (endpos > win->_lastch[n])

        win->_lastch[n] = endpos;

    PDC_sync(win);

    return OK;

}

int hline(chtype ch, int n)

{

    PDC_LOG(("hline() - called\n"));

    return whline(stdscr, ch, n);

}

int mvhline(int y, int x, chtype ch, int n)

{

    PDC_LOG(("mvhline() - called\n"));

    if (move(y, x) == ERR)

        return ERR;

    return whline(stdscr, ch, n);

}

int mvwhline(WINDOW *win, int y, int x, chtype ch, int n)

{

    PDC_LOG(("mvwhline() - called\n"));

    if (wmove(win, y, x) == ERR)

        return ERR;

    return whline(win, ch, n);

}

int wvline(WINDOW *win, chtype ch, int n)

{

    int endpos, x;

    PDC_LOG(("wvline() - called\n"));

    if (!win || n < 1)

        return ERR;

    endpos = min(win->_cury + n, win->_maxy);

    x = win->_curx;

    ch = _attr_passthru(win, ch ? ch : ACS_VLINE);

    for (n = win->_cury; n < endpos; n++)

    {

        win->_y[n][x] = ch;

        if (x < win->_firstch[n] || win->_firstch[n] == _NO_CHANGE)

            win->_firstch[n] = x;

        if (x > win->_lastch[n])

            win->_lastch[n] = x;

    }

    PDC_sync(win);

    return OK;

}

int vline(chtype ch, int n)

{

    PDC_LOG(("vline() - called\n"));

    return wvline(stdscr, ch, n);

}

int mvvline(int y, int x, chtype ch, int n)

{

    PDC_LOG(("mvvline() - called\n"));

    if (move(y, x) == ERR)

        return ERR;

    return wvline(stdscr, ch, n);

}

int mvwvline(WINDOW *win, int y, int x, chtype ch, int n)

{

    PDC_LOG(("mvwvline() - called\n"));

    if (wmove(win, y, x) == ERR)

        return ERR;

    return wvline(win, ch, n);

}

#ifdef PDC_WIDE

int wborder_set(WINDOW *win, const cchar_t *ls, const cchar_t *rs,

                const cchar_t *ts, const cchar_t *bs, const cchar_t *tl,

                const cchar_t *tr, const cchar_t *bl, const cchar_t *br)

{

    PDC_LOG(("wborder_set() - called\n"));

    return wborder(win, ls ? *ls : 0, rs ? *rs : 0, ts ? *ts : 0,

                        bs ? *bs : 0, tl ? *tl : 0, tr ? *tr : 0,

                        bl ? *bl : 0, br ? *br : 0);

}

int border_set(const cchar_t *ls, const cchar_t *rs, const cchar_t *ts,

               const cchar_t *bs, const cchar_t *tl, const cchar_t *tr,

               const cchar_t *bl, const cchar_t *br)

{

    PDC_LOG(("border_set() - called\n"));

    return wborder_set(stdscr, ls, rs, ts, bs, tl, tr, bl, br);

}

int box_set(WINDOW *win, const cchar_t *verch, const cchar_t *horch)

{

    PDC_LOG(("box_set() - called\n"));

    return wborder_set(win, verch, verch, horch, horch,

                       (const cchar_t *)NULL, (const cchar_t *)NULL,

                       (const cchar_t *)NULL, (const cchar_t *)NULL);

}

int whline_set(WINDOW *win, const cchar_t *wch, int n)

{

    PDC_LOG(("whline_set() - called\n"));

    return wch ? whline(win, *wch, n) : ERR;

}

int hline_set(const cchar_t *wch, int n)

{

    PDC_LOG(("hline_set() - called\n"));

    return whline_set(stdscr, wch, n);

}

int mvhline_set(int y, int x, const cchar_t *wch, int n)

{

    PDC_LOG(("mvhline_set() - called\n"));

    if (move(y, x) == ERR)

        return ERR;

    return whline_set(stdscr, wch, n);

}

int mvwhline_set(WINDOW *win, int y, int x, const cchar_t *wch, int n)

{

    PDC_LOG(("mvwhline_set() - called\n"));

    if (wmove(win, y, x) == ERR)

        return ERR;

    return whline_set(win, wch, n);

}

int wvline_set(WINDOW *win, const cchar_t *wch, int n)

{

    PDC_LOG(("wvline_set() - called\n"));

    return wch ? wvline(win, *wch, n) : ERR;

}

int vline_set(const cchar_t *wch, int n)

{

    PDC_LOG(("vline_set() - called\n"));

    return wvline_set(stdscr, wch, n);

}

int mvvline_set(int y, int x, const cchar_t *wch, int n)

{

    PDC_LOG(("mvvline_set() - called\n"));

    if (move(y, x) == ERR)

        return ERR;

    return wvline_set(stdscr, wch, n);

}

int mvwvline_set(WINDOW *win, int y, int x, const cchar_t *wch, int n)

{

    PDC_LOG(("mvwvline_set() - called\n"));

    if (wmove(win, y, x) == ERR)

        return ERR;

    return wvline_set(win, wch, n);

}

#endif