diff options
Diffstat (limited to 'ncurses/base/lib_bkgd.c')
| -rw-r--r-- | ncurses/base/lib_bkgd.c | 76 |
1 files changed, 60 insertions, 16 deletions
diff --git a/ncurses/base/lib_bkgd.c b/ncurses/base/lib_bkgd.c index 2030030..4f99080 100644 --- a/ncurses/base/lib_bkgd.c +++ b/ncurses/base/lib_bkgd.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright 2018-2019,2020 Thomas E. Dickey * + * Copyright 2018-2020,2021 Thomas E. Dickey * * Copyright 1998-2014,2016 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * @@ -37,7 +37,9 @@ #include <curses.priv.h> -MODULE_ID("$Id: lib_bkgd.c,v 1.54 2020/02/02 23:34:34 tom Exp $") +MODULE_ID("$Id: lib_bkgd.c,v 1.63 2021/05/08 14:58:12 tom Exp $") + +static const NCURSES_CH_T blank = NewChar(BLANK_TEXT); /* * Set the window's background information. @@ -49,7 +51,7 @@ static NCURSES_INLINE void #endif wbkgrndset(WINDOW *win, const ARG_CH_T ch) { - T((T_CALLED("wbkgdset(%p,%s)"), (void *) win, _tracech_t(ch))); + T((T_CALLED("wbkgrndset(%p,%s)"), (void *) win, _tracech_t(ch))); if (win) { attr_t off = AttrOf(win->_nc_bkgd); @@ -62,7 +64,7 @@ wbkgrndset(WINDOW *win, const ARG_CH_T ch) { int pair; - if ((pair = GetPair(win->_nc_bkgd)) != 0) + if (GetPair(win->_nc_bkgd) != 0) SET_WINDOW_PAIR(win, 0); if ((pair = GetPair(CHDEREF(ch))) != 0) SET_WINDOW_PAIR(win, pair); @@ -103,26 +105,36 @@ NCURSES_EXPORT(void) wbkgdset(WINDOW *win, chtype ch) { NCURSES_CH_T wch; + T((T_CALLED("wbkgdset(%p,%s)"), (void *) win, _tracechtype(ch))); SetChar2(wch, ch); wbkgrndset(win, CHREF(wch)); + returnVoid; } /* * Set the window's background information and apply it to each cell. */ -#if USE_WIDEC_SUPPORT -NCURSES_EXPORT(int) -#else static NCURSES_INLINE int -#undef wbkgrnd -#endif -wbkgrnd(WINDOW *win, const ARG_CH_T ch) +_nc_background(WINDOW *win, const ARG_CH_T ch, bool narrow) { #undef SP_PARM #define SP_PARM SP /* to use Charable() */ int code = ERR; - T((T_CALLED("wbkgd(%p,%s)"), (void *) win, _tracech_t(ch))); +#if USE_WIDEC_SUPPORT + T((T_CALLED("%s(%p,%s)"), + narrow ? "wbkgd" : "wbkgrnd", + (void *) win, + _tracecchar_t(ch))); +#define TraceChar(c) _tracecchar_t2(1, &(c)) +#else + T((T_CALLED("%s(%p,%s)"), + "wbkgd", + (void *) win, + _tracech_t(ch))); + (void) narrow; +#define TraceChar(c) _tracechar(CharOf(c)) +#endif if (SP == 0) { ; @@ -143,6 +155,14 @@ wbkgrnd(WINDOW *win, const ARG_CH_T ch) SetPair(new_bkgd, 0); } + /* avoid setting background-character to a null */ + if (CharOf(new_bkgd) == 0) { + NCURSES_CH_T tmp_bkgd = blank; + SetAttr(tmp_bkgd, AttrOf(new_bkgd)); + SetPair(tmp_bkgd, GetPair(new_bkgd)); + new_bkgd = tmp_bkgd; + } + memset(&old_bkgd, 0, sizeof(old_bkgd)); (void) wgetbkgrnd(win, &old_bkgd); @@ -160,7 +180,7 @@ wbkgrnd(WINDOW *win, const ARG_CH_T ch) old_pair = 0; } T(("... old background char %s, attr %s, pair %d", - _tracechar(CharOf(old_char)), _traceattr(old_attr), old_pair)); + TraceChar(old_char), _traceattr(old_attr), old_pair)); new_char = new_bkgd; RemAttr(new_char, ~A_CHARTEXT); @@ -168,14 +188,18 @@ wbkgrnd(WINDOW *win, const ARG_CH_T ch) new_pair = GetPair(new_bkgd); /* SVr4 limits background character to printable 7-bits */ - if (!Charable(new_bkgd)) { + if ( +#if USE_WIDEC_SUPPORT + narrow && +#endif + !Charable(new_bkgd)) { new_char = old_char; } if (!(new_attr & A_COLOR)) { new_pair = 0; } T(("... new background char %s, attr %s, pair %d", - _tracechar(CharOf(new_char)), _traceattr(new_attr), new_pair)); + TraceChar(new_char), _traceattr(new_attr), new_pair)); (void) wbkgrndset(win, CHREF(new_bkgd)); @@ -196,7 +220,19 @@ wbkgrnd(WINDOW *win, const ARG_CH_T ch) attr_t tmp_attr = AttrOf(*cp); if (CharEq(*cp, old_bkgd)) { - SetChar2(*cp, CharOf(new_char)); +#if USE_WIDEC_SUPPORT + if (!narrow) { + if (Charable(new_bkgd)) { + SetChar2(*cp, CharOf(new_char)); + } else { + SetChar(*cp, L' ', AttrOf(new_char)); + } + memcpy(cp->chars, + new_char.chars, + CCHARW_MAX * sizeof(cp->chars[0])); + } else +#endif + SetChar2(*cp, CharOf(new_char)); } if (tmp_pair != 0) { if (tmp_pair == old_pair) { @@ -220,10 +256,18 @@ wbkgrnd(WINDOW *win, const ARG_CH_T ch) returnCode(code); } +#if USE_WIDEC_SUPPORT +NCURSES_EXPORT(int) +wbkgrnd(WINDOW *win, const ARG_CH_T ch) +{ + return _nc_background(win, ch, FALSE); +} +#endif + NCURSES_EXPORT(int) wbkgd(WINDOW *win, chtype ch) { NCURSES_CH_T wch; SetChar2(wch, ch); - return wbkgrnd(win, CHREF(wch)); + return _nc_background(win, CHREF(wch), TRUE); } |