1 /* $OpenBSD: lib_redrawln.c,v 1.4 2019/11/15 14:45:37 fcambus Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Thomas E. Dickey <dickey@clark.net> 1997 * 33 ****************************************************************************/ 34 35 /* 36 * lib_redrawln.c 37 * 38 * The routine wredrawln(). 39 * 40 */ 41 42 #include <curses.priv.h> 43 44 MODULE_ID("$Id: lib_redrawln.c,v 1.4 2019/11/15 14:45:37 fcambus Exp $") 45 46 NCURSES_EXPORT(int) 47 wredrawln(WINDOW *win, int beg, int num) 48 { 49 int i; 50 int end; 51 size_t len; 52 53 T((T_CALLED("wredrawln(%p,%d,%d)"), win, beg, num)); 54 55 if (win == 0) 56 returnCode(ERR); 57 58 if (beg < 0) 59 beg = 0; 60 61 if (touchline(win, beg, num) == ERR) 62 returnCode(ERR); 63 64 if (touchline(curscr, beg + win->_begy, num) == ERR) 65 returnCode(ERR); 66 67 end = beg + num; 68 if (end > curscr->_maxy + 1 - win->_begy) 69 end = curscr->_maxy + 1 - win->_begy; 70 if (end > win->_maxy + 1) 71 end = win->_maxy + 1; 72 73 len = (win->_maxx + 1); 74 if (len > (size_t) (curscr->_maxx + 1 - win->_begx)) 75 len = (size_t) (curscr->_maxx + 1 - win->_begx); 76 len *= sizeof(curscr->_line[0].text[0]); 77 78 for (i = beg; i < end; i++) { 79 int crow = i + win->_begy; 80 81 memset(curscr->_line[crow].text + win->_begx, 0, len); 82 _nc_make_oldhash(crow); 83 } 84 85 returnCode(OK); 86 } 87