diff options
Diffstat (limited to 'ncurses-5.3/ncurses/base/lib_bkgd.c')
| -rw-r--r-- | ncurses-5.3/ncurses/base/lib_bkgd.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/base/lib_bkgd.c b/ncurses-5.3/ncurses/base/lib_bkgd.c new file mode 100644 index 0000000..0a0e3d6 --- /dev/null +++ b/ncurses-5.3/ncurses/base/lib_bkgd.c @@ -0,0 +1,138 @@ +/**************************************************************************** + * Copyright (c) 1998,2001-2002 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + ****************************************************************************/ + +#include <curses.priv.h> + +MODULE_ID("$Id$") + +/* + * Set the window's background information. + */ +#if USE_WIDEC_SUPPORT +NCURSES_EXPORT(void) +#else +static inline void +#endif +wbkgrndset(WINDOW *win, const ARG_CH_T ch) +{ + T((T_CALLED("wbkgdset(%p,%s)"), win, _tracech_t(ch))); + + if (win) { + attr_t off = AttrOf(win->_nc_bkgd); + attr_t on = AttrOf(CHDEREF(ch)); + + toggle_attr_off(win->_attrs, off); + toggle_attr_on(win->_attrs, on); + + if (CharOf(CHDEREF(ch)) == L('\0')) + SetChar(win->_nc_bkgd, BLANK_TEXT, AttrOf(CHDEREF(ch))); + else + win->_nc_bkgd = CHDEREF(ch); +#if USE_WIDEC_SUPPORT + /* + * If we're compiled for wide-character support, _bkgrnd is the + * preferred location for the background information since it stores + * more than _bkgd. Update _bkgd each time we modify _bkgrnd, so the + * macro getbkgd() will work. + */ + { + cchar_t wch; + int tmp; + + wgetbkgrnd(win, &wch); + tmp = wctob(CharOf(wch)); + + win->_bkgd = ((tmp == EOF) ? ' ' : (chtype) tmp) | AttrOf(wch); + } +#endif + } + returnVoid; +} + +NCURSES_EXPORT(void) +wbkgdset(WINDOW *win, chtype ch) +{ + NCURSES_CH_T wch; + SetChar2(wch, ch); + wbkgrndset(win, CHREF(wch)); +} + +/* + * Set the window's background information and apply it to each cell. + */ +#if USE_WIDEC_SUPPORT +NCURSES_EXPORT(int) +#else +static inline int +#undef wbkgrnd +#endif +wbkgrnd(WINDOW *win, const ARG_CH_T ch) +{ + int code = ERR; + int x, y; + NCURSES_CH_T new_bkgd = CHDEREF(ch); + + T((T_CALLED("wbkgd(%p,%s)"), win, _tracech_t(ch))); + + if (win) { + NCURSES_CH_T old_bkgrnd; + wgetbkgrnd(win, &old_bkgrnd); + + wbkgrndset(win, CHREF(new_bkgd)); + wattrset(win, AttrOf(win->_nc_bkgd)); + + for (y = 0; y <= win->_maxy; y++) { + for (x = 0; x <= win->_maxx; x++) { + if (CharEq(win->_line[y].text[x], old_bkgrnd)) + win->_line[y].text[x] = win->_nc_bkgd; + else { + NCURSES_CH_T wch = win->_line[y].text[x]; + RemAttr(wch, (~A_ALTCHARSET)); + win->_line[y].text[x] = _nc_render(win, wch); + } + } + } + touchwin(win); + _nc_synchook(win); + code = OK; + } + returnCode(code); +} + +NCURSES_EXPORT(int) +wbkgd(WINDOW *win, chtype ch) +{ + NCURSES_CH_T wch; + SetChar2(wch, ch); + return wbkgrnd(win, CHREF(wch)); +} |