1 /****************************************************************************
2 * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
40 #include <curses.priv.h>
42 MODULE_ID("$Id: lib_window.c,v 1.29 2010/12/19 01:47:22 tom Exp $")
45 _nc_synchook(WINDOW *win)
46 /* hook to be called after each window change */
55 mvderwin(WINDOW *win, int y, int x)
56 /* move a derived window */
62 T((T_CALLED("mvderwin(%p,%d,%d)"), (void *) win, y, x));
65 && (orig = win->_parent) != 0
67 && (x + getmaxx(win) <= getmaxx(orig))
68 && (y + getmaxy(win) <= getmaxy(orig))) {
72 for (i = 0; i < getmaxy(win); i++)
73 win->_line[i].text = &(orig->_line[y++].text[x]);
80 syncok(WINDOW *win, bool bf)
81 /* enable/disable automatic wsyncup() on each change to window */
83 T((T_CALLED("syncok(%p,%d)"), (void *) win, bf));
94 /* mark changed every cell in win's ancestors that is changed in win */
95 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */
99 T((T_CALLED("wsyncup(%p)"), (void *) win));
100 if (win && win->_parent) {
101 for (wp = win; wp->_parent; wp = wp->_parent) {
103 WINDOW *pp = wp->_parent;
105 assert((wp->_pary <= pp->_maxy) &&
106 ((wp->_pary + wp->_maxy) <= pp->_maxy));
108 for (y = 0; y <= wp->_maxy; y++) {
109 int left = wp->_line[y].firstchar;
110 if (left >= 0) { /* line is touched */
111 struct ldat *line = &(pp->_line[wp->_pary + y]);
112 /* left & right character in parent window coordinates */
113 int right = wp->_line[y].lastchar + wp->_parx;
116 CHANGED_RANGE(line, left, right);
125 wsyncdown(WINDOW *win)
126 /* mark changed every cell in win that is changed in any of its ancestors */
127 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */
129 T((T_CALLED("wsyncdown(%p)"), (void *) win));
131 if (win && win->_parent) {
132 WINDOW *pp = win->_parent;
135 /* This recursion guarantees, that the changes are propagated down-
136 wards from the root to our direct parent. */
139 /* and now we only have to propagate the changes from our direct
140 parent, if there are any. */
141 assert((win->_pary <= pp->_maxy) &&
142 ((win->_pary + win->_maxy) <= pp->_maxy));
144 for (y = 0; y <= win->_maxy; y++) {
145 if (pp->_line[win->_pary + y].firstchar >= 0) { /* parent changed */
146 struct ldat *line = &(win->_line[y]);
147 /* left and right character in child coordinates */
148 int left = pp->_line[win->_pary + y].firstchar - win->_parx;
149 int right = pp->_line[win->_pary + y].lastchar - win->_parx;
150 /* The change may be outside the child's range */
153 if (right > win->_maxx)
155 CHANGED_RANGE(line, left, right);
163 wcursyncup(WINDOW *win)
164 /* sync the cursor in all derived windows to its value in the base window */
168 T((T_CALLED("wcursyncup(%p)"), (void *) win));
169 for (wp = win; wp && wp->_parent; wp = wp->_parent) {
170 wmove(wp->_parent, wp->_pary + wp->_cury, wp->_parx + wp->_curx);
175 NCURSES_EXPORT(WINDOW *)
177 /* make an exact duplicate of the given window */
183 T((T_CALLED("dupwin(%p)"), (void *) win));
187 SCREEN *sp = _nc_screen_of(win);
189 _nc_lock_global(curses);
190 if (win->_flags & _ISPAD) {
191 nwin = NCURSES_SP_NAME(newpad) (NCURSES_SP_ARGx
195 nwin = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
204 nwin->_curx = win->_curx;
205 nwin->_cury = win->_cury;
206 nwin->_maxy = win->_maxy;
207 nwin->_maxx = win->_maxx;
208 nwin->_begy = win->_begy;
209 nwin->_begx = win->_begx;
210 nwin->_yoffset = win->_yoffset;
212 nwin->_flags = win->_flags & ~_SUBWIN;
213 /* Due to the use of newwin(), the clone is not a subwindow.
214 * The text is really copied into the clone.
217 WINDOW_ATTRS(nwin) = WINDOW_ATTRS(win);
218 nwin->_nc_bkgd = win->_nc_bkgd;
220 nwin->_notimeout = win->_notimeout;
221 nwin->_clear = win->_clear;
222 nwin->_leaveok = win->_leaveok;
223 nwin->_scroll = win->_scroll;
224 nwin->_idlok = win->_idlok;
225 nwin->_idcok = win->_idcok;
226 nwin->_immed = win->_immed;
227 nwin->_sync = win->_sync;
228 nwin->_use_keypad = win->_use_keypad;
229 nwin->_delay = win->_delay;
233 nwin->_parent = (WINDOW *) 0;
234 /* See above: the clone isn't a subwindow! */
236 nwin->_regtop = win->_regtop;
237 nwin->_regbottom = win->_regbottom;
239 if (win->_flags & _ISPAD)
240 nwin->_pad = win->_pad;
242 linesize = (unsigned) (win->_maxx + 1) * sizeof(NCURSES_CH_T);
243 for (i = 0; i <= nwin->_maxy; i++) {
244 memcpy(nwin->_line[i].text, win->_line[i].text, linesize);
245 nwin->_line[i].firstchar = win->_line[i].firstchar;
246 nwin->_line[i].lastchar = win->_line[i].lastchar;
249 _nc_unlock_global(curses);