c77e1d014f
Store ripped off lines in the SCREEN structure so we can repaint then when the terminal is resized. Fix mvwin(3) so it can move windows in the ripped off area.
267 lines
6.6 KiB
C
267 lines
6.6 KiB
C
/* $NetBSD: screen.c,v 1.29 2017/01/11 20:43:03 roy Exp $ */
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/*
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* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)screen.c 8.2 (blymn) 11/27/2001";
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#else
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__RCSID("$NetBSD: screen.c,v 1.29 2017/01/11 20:43:03 roy Exp $");
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#endif
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#endif /* not lint */
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#include <stdlib.h>
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#include "curses.h"
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#include "curses_private.h"
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static int filtered;
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static void __delscreen(SCREEN *);
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/*
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* set_term --
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* Change the term to the given screen.
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*
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*/
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SCREEN *
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set_term(SCREEN *new)
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{
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SCREEN *old_screen = _cursesi_screen;
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if (_cursesi_screen != NULL) {
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/* save changes made to the current screen... */
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old_screen->echoit = __echoit;
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old_screen->pfast = __pfast;
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old_screen->rawmode = __rawmode;
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old_screen->noqch = __noqch;
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old_screen->COLS = COLS;
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old_screen->LINES = LINES + __rippedlines(old_screen);
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old_screen->COLORS = COLORS;
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old_screen->COLOR_PAIRS = COLOR_PAIRS;
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old_screen->GT = __GT;
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old_screen->NONL = __NONL;
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old_screen->UPPERCASE = __UPPERCASE;
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}
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_cursesi_screen = new;
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__echoit = new->echoit;
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__pfast = new->pfast;
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__rawmode = new->rawmode;
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__noqch = new->noqch;
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COLS = new->COLS;
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LINES = new->LINES - __rippedlines(new);
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COLORS = new->COLORS;
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COLOR_PAIRS = new->COLOR_PAIRS;
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__GT = new->GT;
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__NONL = new->NONL;
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__UPPERCASE = new->UPPERCASE;
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_cursesi_resetterm(new);
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curscr = new->curscr;
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clearok(curscr, new->clearok);
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stdscr = new->stdscr;
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__virtscr = new->__virtscr;
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_cursesi_reset_acs(new);
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#ifdef HAVE_WCHAR
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_cursesi_reset_wacs(new);
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#endif /* HAVE_WCHAR */
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#ifdef DEBUG
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__CTRACE(__CTRACE_SCREEN, "set_term: LINES = %d, COLS = %d\n",
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LINES, COLS);
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#endif
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return old_screen;
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}
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/*
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* newterm --
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* Set up a new screen.
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*
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*/
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SCREEN *
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newterm(char *type, FILE *outfd, FILE *infd)
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{
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SCREEN *new_screen;
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char *sp;
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int rtop;
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sp = type;
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if (type == NULL && (sp = getenv("TERM")) == NULL)
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return NULL;
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if ((new_screen = calloc(1, sizeof(SCREEN))) == NULL)
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return NULL;
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#ifdef DEBUG
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__CTRACE(__CTRACE_INIT, "newterm\n");
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#endif
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new_screen->infd = infd;
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new_screen->checkfd = fileno(infd);
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new_screen->outfd = outfd;
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new_screen->echoit = new_screen->nl = 1;
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new_screen->pfast = new_screen->rawmode = new_screen->noqch = 0;
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new_screen->filtered = filtered;
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filtered = FALSE; /* filter() must preceed each newterm() */
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new_screen->nca = A_NORMAL;
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new_screen->color_type = COLOR_NONE;
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new_screen->COLOR_PAIRS = 0;
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new_screen->old_mode = 2;
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new_screen->stdbuf = NULL;
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new_screen->stdscr = NULL;
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new_screen->curscr = NULL;
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new_screen->__virtscr = NULL;
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new_screen->curwin = 0;
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new_screen->notty = FALSE;
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new_screen->half_delay = FALSE;
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new_screen->resized = 0;
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new_screen->unget_len = 32;
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if ((new_screen->unget_list =
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malloc(sizeof(wchar_t) * new_screen->unget_len)) == NULL)
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{
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goto error_exit;
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}
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new_screen->unget_pos = 0;
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if (_cursesi_gettmode(new_screen) == ERR)
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goto error_exit;
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if (_cursesi_setterm((char *)sp, new_screen) == ERR)
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goto error_exit;
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/* Need either homing or cursor motion for refreshes */
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if (!t_cursor_home(new_screen->term) &&
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!t_cursor_address(new_screen->term))
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goto error_exit;
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new_screen->winlistp = NULL;
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if ((new_screen->curscr = __newwin(new_screen, 0,
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0, 0, 0, FALSE)) == NULL)
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goto error_exit;
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if ((new_screen->__virtscr = __newwin(new_screen, 0,
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0, 0, 0, FALSE)) == NULL)
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goto error_exit;
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if (__ripoffscreen(new_screen, &rtop) == ERR)
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goto error_exit;
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new_screen->stdscr = __newwin(new_screen, LINES, 0, rtop, 0, FALSE);
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if (new_screen->stdscr == NULL)
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goto error_exit;
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clearok(new_screen->stdscr, 1);
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__init_getch(new_screen);
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__init_acs(new_screen);
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#ifdef HAVE_WCHAR
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__init_get_wch( new_screen );
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__init_wacs(new_screen);
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#endif /* HAVE_WCHAR */
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__set_stophandler();
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__set_winchhandler();
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/*
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* bleh - it seems that apps expect the first newterm to set
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* up the curses screen.... emulate this.
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*/
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if (_cursesi_screen == NULL || _cursesi_screen->endwin) {
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set_term(new_screen);
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}
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#ifdef DEBUG
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__CTRACE(__CTRACE_SCREEN, "newterm: LINES = %d, COLS = %d\n",
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LINES, COLS);
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#endif
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__startwin(new_screen);
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return new_screen;
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error_exit:
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__delscreen(new_screen);
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free(new_screen->unget_list);
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free(new_screen);
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return NULL;
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}
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/*
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* delscreen --
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* Free resources used by the given screen and destroy it.
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*
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*/
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void
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delscreen(SCREEN *screen)
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{
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#ifdef DEBUG
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__CTRACE(__CTRACE_SCREEN, "delscreen(%p)\n", screen);
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#endif
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__delscreen(screen);
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/* free the storage of the keymaps */
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_cursesi_free_keymap(screen->base_keymap);
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free(screen->stdbuf);
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free(screen->unget_list);
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if (_cursesi_screen == screen)
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_cursesi_screen = NULL;
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free(screen);
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}
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static void
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__delscreen(SCREEN *screen)
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{
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struct __winlist *list;
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/* free up the terminfo stuff */
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if (screen->term != NULL)
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del_curterm(screen->term);
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/* walk the window list and kill all the parent windows */
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while ((list = screen->winlistp) != NULL) {
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delwin(list->winp);
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if (list == screen->winlistp)
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/* sanity - abort if window didn't remove itself */
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break;
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}
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}
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