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/* $OpenBSD: lib_window.c,v 1.2 2001/01/22 18:01:48 millert Exp $ */
/****************************************************************************
* Copyright (c) 1998,2000 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_window.c
**
**
*/
#include <curses.priv.h>
MODULE_ID("$From: lib_window.c,v 1.15 2000/12/10 02:43:28 tom Exp $")
NCURSES_EXPORT(void)
_nc_synchook(WINDOW *win)
/* hook to be called after each window change */
{
if (win->_immed)
wrefresh(win);
if (win->_sync)
wsyncup(win);
}
NCURSES_EXPORT(int)
mvderwin(WINDOW *win, int y, int x)
/* move a derived window */
{
WINDOW *orig;
int i;
T((T_CALLED("mvderwin(%p,%d,%d)"), win, y, x));
if (win && (orig = win->_parent)) {
if (win->_parx == x && win->_pary == y)
returnCode(OK);
if (x < 0 || y < 0)
returnCode(ERR);
if ((x + getmaxx(win) > getmaxx(orig)) ||
(y + getmaxy(win) > getmaxy(orig)))
returnCode(ERR);
} else
returnCode(ERR);
wsyncup(win);
win->_parx = x;
win->_pary = y;
for (i = 0; i < getmaxy(win); i++)
win->_line[i].text = &(orig->_line[y++].text[x]);
returnCode(OK);
}
NCURSES_EXPORT(int)
syncok(WINDOW *win, bool bf)
/* enable/disable automatic wsyncup() on each change to window */
{
T((T_CALLED("syncok(%p,%d)"), win, bf));
if (win) {
win->_sync = bf;
returnCode(OK);
} else
returnCode(ERR);
}
NCURSES_EXPORT(void)
wsyncup(WINDOW *win)
/* mark changed every cell in win's ancestors that is changed in win */
/* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */
{
WINDOW *wp;
if (win && win->_parent)
for (wp = win; wp->_parent; wp = wp->_parent) {
int y;
WINDOW *pp = wp->_parent;
assert((wp->_pary <= pp->_maxy) &&
((wp->_pary + wp->_maxy) <= pp->_maxy));
for (y = 0; y <= wp->_maxy; y++) {
int left = wp->_line[y].firstchar;
if (left >= 0) { /* line is touched */
struct ldat *line = &(pp->_line[wp->_pary + y]);
/* left & right character in parent window coordinates */
int right = wp->_line[y].lastchar + wp->_parx;
left += wp->_parx;
CHANGED_RANGE(line, left, right);
}
}
}
}
NCURSES_EXPORT(void)
wsyncdown(WINDOW *win)
/* mark changed every cell in win that is changed in any of its ancestors */
/* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */
{
if (win && win->_parent) {
WINDOW *pp = win->_parent;
int y;
/* This recursion guarantees, that the changes are propagated down-
wards from the root to our direct parent. */
wsyncdown(pp);
/* and now we only have to propagate the changes from our direct
parent, if there are any. */
assert((win->_pary <= pp->_maxy) &&
((win->_pary + win->_maxy) <= pp->_maxy));
for (y = 0; y <= win->_maxy; y++) {
if (pp->_line[win->_pary + y].firstchar >= 0) { /* parent changed */
struct ldat *line = &(win->_line[y]);
/* left and right character in child coordinates */
int left = pp->_line[win->_pary + y].firstchar - win->_parx;
int right = pp->_line[win->_pary + y].lastchar - win->_parx;
/* The change maybe outside the childs range */
if (left < 0)
left = 0;
if (right > win->_maxx)
right = win->_maxx;
CHANGED_RANGE(line, left, right);
}
}
}
}
NCURSES_EXPORT(void)
wcursyncup(WINDOW *win)
/* sync the cursor in all derived windows to its value in the base window */
{
WINDOW *wp;
for (wp = win; wp && wp->_parent; wp = wp->_parent) {
wmove(wp->_parent, wp->_pary + wp->_cury, wp->_parx + wp->_curx);
}
}
NCURSES_EXPORT(WINDOW *)
dupwin(WINDOW *win)
/* make an exact duplicate of the given window */
{
WINDOW *nwin;
size_t linesize;
int i;
T((T_CALLED("dupwin(%p)"), win));
if ((win == NULL) ||
((nwin = newwin(win->_maxy + 1, win->_maxx + 1, win->_begy,
win->_begx)) == NULL))
returnWin(0);
nwin->_curx = win->_curx;
nwin->_cury = win->_cury;
nwin->_maxy = win->_maxy;
nwin->_maxx = win->_maxx;
nwin->_begy = win->_begy;
nwin->_begx = win->_begx;
nwin->_yoffset = win->_yoffset;
nwin->_flags = win->_flags & ~_SUBWIN;
/* Due to the use of newwin(), the clone is not a subwindow.
* The text is really copied into the clone.
*/
nwin->_attrs = win->_attrs;
nwin->_bkgd = win->_bkgd;
nwin->_clear = win->_clear;
nwin->_scroll = win->_scroll;
nwin->_leaveok = win->_leaveok;
nwin->_use_keypad = win->_use_keypad;
nwin->_delay = win->_delay;
nwin->_immed = win->_immed;
nwin->_sync = win->_sync;
nwin->_parx = 0;
nwin->_pary = 0;
nwin->_parent = (WINDOW *) 0;
/* See above: the clone isn't a subwindow! */
nwin->_regtop = win->_regtop;
nwin->_regbottom = win->_regbottom;
linesize = (win->_maxx + 1) * sizeof(chtype);
for (i = 0; i <= nwin->_maxy; i++) {
memcpy(nwin->_line[i].text, win->_line[i].text, linesize);
nwin->_line[i].firstchar = win->_line[i].firstchar;
nwin->_line[i].lastchar = win->_line[i].lastchar;
}
returnWin(nwin);
}
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