diff options
Diffstat (limited to 'ncurses-5.3/ncurses/base/lib_scroll.c')
| -rw-r--r-- | ncurses-5.3/ncurses/base/lib_scroll.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/ncurses-5.3/ncurses/base/lib_scroll.c b/ncurses-5.3/ncurses/base/lib_scroll.c deleted file mode 100644 index 324e637..0000000 --- a/ncurses-5.3/ncurses/base/lib_scroll.c +++ /dev/null @@ -1,152 +0,0 @@ -/**************************************************************************** - * Copyright (c) 1998,2000,2001 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: Thomas E. Dickey 1996-2001 * - * and: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * - * and: Eric S. Raymond <esr@snark.thyrsus.com> * - ****************************************************************************/ - -/* -** lib_scroll.c -** -** The routine wscrl(win, n). -** positive n scroll the window up (ie. move lines down) -** negative n scroll the window down (ie. move lines up) -** -*/ - -#include <curses.priv.h> - -MODULE_ID("$Id$") - -NCURSES_EXPORT(void) -_nc_scroll_window(WINDOW *win, int const n, NCURSES_SIZE_T const top, - NCURSES_SIZE_T const bottom, NCURSES_CH_T blank) -{ - int limit; - int line; - int j; - size_t to_copy = (size_t) (sizeof(NCURSES_CH_T) * (win->_maxx + 1)); - - TR(TRACE_MOVE, ("_nc_scroll_window(%p, %d, %d, %d)", win, n, top, bottom)); - - if (top < 0 - || bottom < top - || bottom > win->_maxy) { - TR(TRACE_MOVE, ("nothing to scroll")); - return; - } - - /* - * This used to do a line-text pointer-shuffle instead of text copies. - * That (a) doesn't work when the window is derived and doesn't have - * its own storage, (b) doesn't save you a lot on modern machines - * anyway. Your typical memcpy implementations are coded in - * assembler using a tight BLT loop; for the size of copies we're - * talking here, the total execution time is dominated by the one-time - * setup cost. So there is no point in trying to be excessively - * clever -- esr. - */ - - /* shift n lines downwards */ - if (n < 0) { - limit = top - n; - if (limit > win->_maxy) - limit = win->_maxy; - for (line = bottom; line >= limit; line--) { - if (line + n >= 0) { - TR(TRACE_MOVE, ("...copying %d to %d", line + n, line)); - memcpy(win->_line[line].text, - win->_line[line + n].text, - to_copy); - if_USE_SCROLL_HINTS(win->_line[line].oldindex = - win->_line[line + n].oldindex); - } else { - TR(TRACE_MOVE, ("...filling %d", line)); - for (j = 0; j <= win->_maxx; j++) - win->_line[line].text[j] = blank; - if_USE_SCROLL_HINTS(win->_line[line].oldindex = _NEWINDEX); - } - } - for (line = top; line < limit; line++) { - TR(TRACE_MOVE, ("...filling %d", line)); - for (j = 0; j <= win->_maxx; j++) - win->_line[line].text[j] = blank; - if_USE_SCROLL_HINTS(win->_line[line].oldindex = _NEWINDEX); - } - } - - /* shift n lines upwards */ - if (n > 0) { - limit = bottom - n; - if (limit < 0) - limit = 0; - for (line = top; line <= limit; line++) { - if (line + n <= win->_maxy) { - TR(TRACE_MOVE, ("...copying %d to %d", line + n, line)); - memcpy(win->_line[line].text, - win->_line[line + n].text, - to_copy); - if_USE_SCROLL_HINTS(win->_line[line].oldindex = - win->_line[line + n].oldindex); - } else { - TR(TRACE_MOVE, ("...filling %d", line)); - for (j = 0; j <= win->_maxx; j++) - win->_line[line].text[j] = blank; - if_USE_SCROLL_HINTS(win->_line[line].oldindex = _NEWINDEX); - } - } - for (line = bottom; line > limit; line--) { - TR(TRACE_MOVE, ("...filling %d", line)); - for (j = 0; j <= win->_maxx; j++) - win->_line[line].text[j] = blank; - if_USE_SCROLL_HINTS(win->_line[line].oldindex = _NEWINDEX); - } - } - touchline(win, top, bottom - top + 1); -} - -NCURSES_EXPORT(int) -wscrl(WINDOW *win, int n) -{ - T((T_CALLED("wscrl(%p,%d)"), win, n)); - - if (!win || !win->_scroll) { - TR(TRACE_MOVE, ("...scrollok is false")); - returnCode(ERR); - } - - if (n == 0) - returnCode(OK); - - _nc_scroll_window(win, n, win->_regtop, win->_regbottom, win->_nc_bkgd); - - _nc_synchook(win); - returnCode(OK); -} |