1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2009,2010 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Thomas E. Dickey <dickey@clark.net> 1997 * 32 ****************************************************************************/ 33 34 /* 35 * lib_redrawln.c 36 * 37 * The routine wredrawln(). 38 * 39 */ 40 41 #include <curses.priv.h> 42 43 MODULE_ID("$Id: lib_redrawln.c,v 1.18 2020/02/02 23:34:34 tom Exp $") 44 45 NCURSES_EXPORT(int) 46 wredrawln(WINDOW *win, int beg, int num) 47 { 48 int i; 49 int end; 50 size_t len; 51 SCREEN *sp; 52 53 T((T_CALLED("wredrawln(%p,%d,%d)"), (void *) win, beg, num)); 54 55 if (win == 0) 56 returnCode(ERR); 57 58 sp = _nc_screen_of(win); 59 60 if (beg < 0) 61 beg = 0; 62 63 if (touchline(win, beg, num) == ERR) 64 returnCode(ERR); 65 66 if (touchline(CurScreen(sp), beg + win->_begy, num) == ERR) 67 returnCode(ERR); 68 69 end = beg + num; 70 if (end > CurScreen(sp)->_maxy + 1 - win->_begy) 71 end = CurScreen(sp)->_maxy + 1 - win->_begy; 72 if (end > win->_maxy + 1) 73 end = win->_maxy + 1; 74 75 len = (size_t) (win->_maxx + 1); 76 if (len > (size_t) (CurScreen(sp)->_maxx + 1 - win->_begx)) 77 len = (size_t) (CurScreen(sp)->_maxx + 1 - win->_begx); 78 len *= sizeof(CurScreen(sp)->_line[0].text[0]); 79 80 for (i = beg; i < end; i++) { 81 int crow = i + win->_begy; 82 83 memset(CurScreen(sp)->_line[crow].text + win->_begx, 0, len); 84 NCURSES_SP_NAME(_nc_make_oldhash) (NCURSES_SP_ARGx crow); 85 } 86 87 returnCode(OK); 88 } 89