diff options
Diffstat (limited to 'ncurses-5.2/ncurses/base/lib_addch.c')
| -rw-r--r-- | ncurses-5.2/ncurses/base/lib_addch.c | 298 |
1 files changed, 0 insertions, 298 deletions
diff --git a/ncurses-5.2/ncurses/base/lib_addch.c b/ncurses-5.2/ncurses/base/lib_addch.c deleted file mode 100644 index 1256b18..0000000 --- a/ncurses-5.2/ncurses/base/lib_addch.c +++ /dev/null @@ -1,298 +0,0 @@ -/**************************************************************************** - * Copyright (c) 1998,1999,2000 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> * - ****************************************************************************/ - -/* -** lib_addch.c -** -** The routine waddch(). -** -*/ - -#include <curses.priv.h> -#include <ctype.h> - -MODULE_ID("$Id$") - -/* - * Ugly microtweaking alert. Everything from here to end of module is - * likely to be speed-critical -- profiling data sure says it is! - * Most of the important screen-painting functions are shells around - * waddch(). So we make every effort to reduce function-call overhead - * by inlining stuff, even at the cost of making wrapped copies for - * export. Also we supply some internal versions that don't call the - * window sync hook, for use by string-put functions. - */ - -/* Return bit mask for clearing color pair number if given ch has color */ -#define COLOR_MASK(ch) (~(chtype)((ch)&A_COLOR?A_COLOR:0)) - -static inline chtype -render_char(WINDOW *win, chtype ch) -/* compute a rendition of the given char correct for the current context */ -{ - chtype a = win->_attrs; - - if (ch == ' ') { - /* color in attrs has precedence over bkgd */ - ch = a | (win->_bkgd & COLOR_MASK(a)); - } else { - /* color in attrs has precedence over bkgd */ - a |= (win->_bkgd & A_ATTRIBUTES) & COLOR_MASK(a); - /* color in ch has precedence */ - ch |= (a & COLOR_MASK(ch)); - } - - TR(TRACE_VIRTPUT, ("bkg = %lx, attrs = %lx -> ch = %lx", win->_bkgd, - win->_attrs, ch)); - - return (ch); -} - -chtype -_nc_background(WINDOW *win) -/* make render_char() visible while still allowing us to inline it below */ -{ - return (win->_bkgd); -} - -chtype -_nc_render(WINDOW *win, chtype ch) -/* make render_char() visible while still allowing us to inline it below */ -{ - return render_char(win, ch); -} - -/* check if position is legal; if not, return error */ -#ifndef NDEBUG /* treat this like an assertion */ -#define CHECK_POSITION(win, x, y) \ - if (y > win->_maxy \ - || x > win->_maxx \ - || y < 0 \ - || x < 0) { \ - TR(TRACE_VIRTPUT, ("Alert! Win=%p _curx = %d, _cury = %d " \ - "(_maxx = %d, _maxy = %d)", win, x, y, \ - win->_maxx, win->_maxy)); \ - return(ERR); \ - } -#else -#define CHECK_POSITION(win, x, y) /* nothing */ -#endif - -static inline int -waddch_literal(WINDOW *win, chtype ch) -{ - int x; - struct ldat *line; - - x = win->_curx; - - CHECK_POSITION(win, x, win->_cury); - - /* - * If we're trying to add a character at the lower-right corner more - * than once, fail. (Moving the cursor will clear the flag). - */ -#if 0 /* Solaris 2.6 allows updating the corner more than once */ - if (win->_flags & _WRAPPED) { - if (x >= win->_maxx) - return (ERR); - win->_flags &= ~_WRAPPED; - } -#endif - - ch = render_char(win, ch); - TR(TRACE_VIRTPUT, ("win attr = %s", _traceattr(win->_attrs))); - - line = win->_line + win->_cury; - - CHANGED_CELL(line, x); - - line->text[x++] = ch; - - TR(TRACE_VIRTPUT, ("(%d, %d) = %s", win->_cury, x, _tracechtype(ch))); - if (x > win->_maxx) { - /* - * The _WRAPPED flag is useful only for telling an application that - * we've just wrapped the cursor. We don't do anything with this flag - * except set it when wrapping, and clear it whenever we move the - * cursor. If we try to wrap at the lower-right corner of a window, we - * cannot move the cursor (since that wouldn't be legal). So we return - * an error (which is what SVr4 does). Unlike SVr4, we can - * successfully add a character to the lower-right corner (Solaris 2.6 - * does this also, however). - */ - win->_flags |= _WRAPPED; - if (++win->_cury > win->_regbottom) { - win->_cury = win->_regbottom; - win->_curx = win->_maxx; - if (!win->_scroll) - return (ERR); - scroll(win); - } - win->_curx = 0; - return (OK); - } - win->_curx = x; - return OK; -} - -static inline int -waddch_nosync(WINDOW *win, const chtype ch) -/* the workhorse function -- add a character to the given window */ -{ - int x, y; - int t = 0; - const char *s = 0; - - if ((ch & A_ALTCHARSET) - || ((t = TextOf(ch)) > 127) - || ((s = unctrl(t))[1] == 0)) - return waddch_literal(win, ch); - - x = win->_curx; - y = win->_cury; - - switch (t) { - case '\t': - x += (TABSIZE - (x % TABSIZE)); - - /* - * Space-fill the tab on the bottom line so that we'll get the - * "correct" cursor position. - */ - if ((!win->_scroll && (y == win->_regbottom)) - || (x <= win->_maxx)) { - chtype blank = (' ' | AttrOf(ch)); - while (win->_curx < x) { - if (waddch_literal(win, blank) == ERR) - return (ERR); - } - break; - } else { - wclrtoeol(win); - win->_flags |= _WRAPPED; - if (++y > win->_regbottom) { - x = win->_maxx; - y--; - if (win->_scroll) { - scroll(win); - x = 0; - } - } else { - x = 0; - } - } - break; - case '\n': - wclrtoeol(win); - if (++y > win->_regbottom) { - y--; - if (win->_scroll) - scroll(win); - else - return (ERR); - } - /* FALLTHRU */ - case '\r': - x = 0; - win->_flags &= ~_WRAPPED; - break; - case '\b': - if (x == 0) - return (OK); - x--; - win->_flags &= ~_WRAPPED; - break; - default: - while (*s) - if (waddch_literal(win, (*s++) | AttrOf(ch)) == ERR) - return ERR; - return (OK); - } - - win->_curx = x; - win->_cury = y; - - return (OK); -} - -int -_nc_waddch_nosync(WINDOW *win, const chtype c) -/* export copy of waddch_nosync() so the string-put functions can use it */ -{ - return (waddch_nosync(win, c)); -} - -/* - * The versions below call _nc_synhook(). We wanted to avoid this in the - * version exported for string puts; they'll call _nc_synchook once at end - * of run. - */ - -/* These are actual entry points */ - -int -waddch(WINDOW *win, const chtype ch) -{ - int code = ERR; - - TR(TRACE_VIRTPUT | TRACE_CCALLS, (T_CALLED("waddch(%p, %s)"), win, - _tracechtype(ch))); - - if (win && (waddch_nosync(win, ch) != ERR)) { - _nc_synchook(win); - code = OK; - } - - TR(TRACE_VIRTPUT | TRACE_CCALLS, (T_RETURN("%d"), code)); - return (code); -} - -int -wechochar(WINDOW *win, const chtype ch) -{ - int code = ERR; - - TR(TRACE_VIRTPUT | TRACE_CCALLS, (T_CALLED("wechochar(%p, %s)"), win, - _tracechtype(ch))); - - if (win && (waddch_nosync(win, ch) != ERR)) { - bool save_immed = win->_immed; - win->_immed = TRUE; - _nc_synchook(win); - win->_immed = save_immed; - code = OK; - } - TR(TRACE_VIRTPUT | TRACE_CCALLS, (T_RETURN("%d"), code)); - return (code); -} |