+++ /dev/null
-/****************************************************************************
- * Copyright (c) 1998 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_newwin.c
-**
-** The routines newwin(), subwin() and their dependent
-**
-*/
-
-#include <curses.priv.h>
-
-MODULE_ID("$Id: lib_newwin.c,v 1.19 1998/02/11 12:13:54 tom Exp $")
-
-void _nc_freewin(WINDOW *win)
-{
-WINDOWLIST *p, *q;
-int i;
-
- if (win != 0) {
- for (p = _nc_windows, q = 0; p != 0; q = p, p = p->next) {
- if (p->win == win) {
- if (q == 0)
- _nc_windows = p->next;
- else
- q->next = p->next;
- free(p);
-
- if (! (win->_flags & _SUBWIN)) {
- for (i = 0; i <= win->_maxy && win->_line[i].text; i++)
- free(win->_line[i].text);
- }
- free(win->_line);
- free(win);
-
- if (win == curscr) curscr = 0;
- if (win == stdscr) stdscr = 0;
- if (win == newscr) newscr = 0;
-
- T(("...deleted win=%p", win));
- break;
- }
- }
- }
-}
-
-WINDOW * newwin(int num_lines, int num_columns, int begy, int begx)
-{
-WINDOW *win;
-chtype *ptr;
-int i;
-
- T((T_CALLED("newwin(%d,%d,%d,%d)"), num_lines, num_columns, begy, begx));
-
- if (begy < 0 || begx < 0 || num_lines < 0 || num_columns < 0)
- returnWin(0);
-
- if (num_lines == 0)
- num_lines = SP->_lines_avail - begy;
- if (num_columns == 0)
- num_columns = screen_columns - begx;
-
- if (num_columns + begx > SP->_columns || num_lines + begy > SP->_lines_avail)
- returnWin(0);
-
- if ((win = _nc_makenew(num_lines, num_columns, begy, begx, 0)) == 0)
- returnWin(0);
-
- for (i = 0; i < num_lines; i++) {
- if ((win->_line[i].text = typeCalloc(chtype, (unsigned)num_columns)) == 0) {
- _nc_freewin(win);
- returnWin(0);
- }
- for (ptr = win->_line[i].text; ptr < win->_line[i].text + num_columns; )
- *ptr++ = ' ';
- }
-
- T(("newwin: returned window is %p", win));
-
- returnWin(win);
-}
-
-WINDOW * derwin(WINDOW *orig, int num_lines, int num_columns, int begy, int begx)
-{
-WINDOW *win;
-int i;
-int flags = _SUBWIN;
-
- T((T_CALLED("derwin(%p,%d,%d,%d,%d)"), orig, num_lines, num_columns, begy, begx));
-
- /*
- ** make sure window fits inside the original one
- */
- if ( begy < 0 || begx < 0 || orig == 0 || num_lines < 0 || num_columns < 0)
- returnWin(0);
- if ( begy + num_lines > orig->_maxy + 1
- || begx + num_columns > orig->_maxx + 1)
- returnWin(0);
-
- if (num_lines == 0)
- num_lines = orig->_maxy - begy;
-
- if (num_columns == 0)
- num_columns = orig->_maxx - begx;
-
- if (orig->_flags & _ISPAD)
- flags |= _ISPAD;
-
- if ((win = _nc_makenew(num_lines, num_columns, orig->_begy + begy, orig->_begx + begx, flags)) == 0)
- returnWin(0);
-
- win->_pary = begy;
- win->_parx = begx;
- win->_attrs = orig->_attrs;
- win->_bkgd = orig->_bkgd;
-
- for (i = 0; i < num_lines; i++)
- win->_line[i].text = &orig->_line[begy++].text[begx];
-
- win->_parent = orig;
-
- T(("derwin: returned window is %p", win));
-
- returnWin(win);
-}
-
-
-WINDOW *subwin(WINDOW *w, int l, int c, int y, int x)
-{
- T((T_CALLED("subwin(%p, %d, %d, %d, %d)"), w, l, c, y, x));
- T(("parent has begy = %d, begx = %d", w->_begy, w->_begx));
-
- returnWin(derwin(w, l, c, y - w->_begy, x - w->_begx));
-}
-
-WINDOW *
-_nc_makenew(int num_lines, int num_columns, int begy, int begx, int flags)
-{
-int i;
-WINDOWLIST *wp;
-WINDOW *win;
-bool is_pad = (flags & _ISPAD);
-
- T(("_nc_makenew(%d,%d,%d,%d)", num_lines, num_columns, begy, begx));
-
- if (num_lines <= 0 || num_columns <= 0)
- return 0;
-
- if ((wp = typeCalloc(WINDOWLIST, 1)) == 0)
- return 0;
-
- if ((win = typeCalloc(WINDOW, 1)) == 0)
- return 0;
-
- if ((win->_line = typeCalloc(struct ldat, ((unsigned)num_lines))) == 0) {
- free(win);
- return 0;
- }
-
- win->_curx = 0;
- win->_cury = 0;
- win->_maxy = num_lines - 1;
- win->_maxx = num_columns - 1;
- win->_begy = begy;
- win->_begx = begx;
- win->_yoffset = SP->_topstolen;
-
- win->_flags = flags;
- win->_attrs = A_NORMAL;
- win->_bkgd = BLANK;
-
- win->_clear = is_pad ? FALSE : (num_lines == screen_lines && num_columns == screen_columns);
- win->_idlok = FALSE;
- win->_idcok = TRUE;
- win->_scroll = FALSE;
- win->_leaveok = FALSE;
- win->_use_keypad = FALSE;
- win->_delay = -1;
- win->_immed = FALSE;
- win->_sync = 0;
- win->_parx = -1;
- win->_pary = -1;
- win->_parent = 0;
-
- win->_regtop = 0;
- win->_regbottom = num_lines - 1;
-
- win->_pad._pad_y = -1;
- win->_pad._pad_x = -1;
- win->_pad._pad_top = -1;
- win->_pad._pad_bottom = -1;
- win->_pad._pad_left = -1;
- win->_pad._pad_right = -1;
-
- for (i = 0; i < num_lines; i++)
- {
- /*
- * This used to do
- *
- * win->_line[i].firstchar = win->_line[i].lastchar = _NOCHANGE;
- *
- * which marks the whole window unchanged. That's how
- * SVr1 curses did it, but SVr4 curses marks the whole new
- * window changed.
- *
- * With the old SVr1-like code, say you have stdscr full of
- * characters, then create a new window with newwin(),
- * then do a printw(win, "foo ");, the trailing spaces are
- * completely ignored by the following refreshes. So, you
- * get "foojunkjunk" on the screen instead of "foo " as
- * you actually intended.
- *
- * SVr4 doesn't do this. Instead the spaces are actually written.
- * So that's how we want ncurses to behave.
- */
- win->_line[i].firstchar = 0;
- win->_line[i].lastchar = num_columns-1;
-
- if_USE_SCROLL_HINTS(win->_line[i].oldindex = i);
- }
-
- if (!is_pad && (begx + num_columns == screen_columns)) {
- win->_flags |= _ENDLINE;
-
- if (begx == 0 && num_lines == screen_lines && begy == 0)
- win->_flags |= _FULLWIN;
-
- if (begy + num_lines == screen_lines)
- win->_flags |= _SCROLLWIN;
- }
-
- wp->next = _nc_windows;
- wp->win = win;
- _nc_windows = wp;
-
- T((T_CREATE("window %p"), win));
-
- return(win);
-}
projects / ncurses.git / blobdiff