1 /****************************************************************************
2 * Copyright (c) 1998 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 1.11 1998/02/11 12:13:53 tom Exp $")
44 void _nc_synchook(WINDOW *win)
45 /* hook to be called after each window change */
47 if (win->_immed) wrefresh(win);
48 if (win->_sync) wsyncup(win);
51 int mvderwin(WINDOW *win, int y, int x)
52 /* move a derived window */
57 T((T_CALLED("mvderwin(%p,%d,%d)"), win, y, x));
59 if (win && (orig = win->_parent))
61 if (win->_parx==x && win->_pary==y)
65 if ( (x+getmaxx(win) > getmaxx(orig)) ||
66 (y+getmaxy(win) > getmaxy(orig)) )
74 for(i=0;i<getmaxy(win);i++)
75 win->_line[i].text = &(orig->_line[y++].text[x]);
79 int syncok(WINDOW *win, bool bf)
80 /* enable/disable automatic wsyncup() on each change to window */
82 T((T_CALLED("syncok(%p,%d)"), win, bf));
91 void wsyncup(WINDOW *win)
92 /* mark changed every cell in win's ancestors that is changed in win */
93 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */
97 if (win && win->_parent)
98 for (wp = win; wp->_parent; wp = wp->_parent)
101 WINDOW *pp = wp->_parent;
103 assert((wp->_pary <= pp->_maxy) &&
104 ((wp->_pary+wp->_maxy) <= pp->_maxy));
106 for (y = 0; y <= wp->_maxy; y++)
108 int left = wp->_line[y].firstchar;
109 if (left >= 0) /* line is touched */
111 /* left & right character in parent window coordinates */
112 int right = wp->_line[y].lastchar + wp->_parx;
115 if (pp->_line[wp->_pary + y].firstchar == _NOCHANGE)
117 pp->_line[wp->_pary + y].firstchar = left;
118 pp->_line[wp->_pary + y].lastchar = right;
122 if (left < pp->_line[wp->_pary + y].firstchar)
123 pp->_line[wp->_pary + y].firstchar = left;
124 if (pp->_line[wp->_pary + y].lastchar < right)
125 pp->_line[wp->_pary + y].lastchar = right;
132 void wsyncdown(WINDOW *win)
133 /* mark changed every cell in win that is changed in any of its ancestors */
134 /* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */
136 if (win && win->_parent)
138 WINDOW *pp = win->_parent;
141 /* This recursion guarantees, that the changes are propagated down-
142 wards from the root to our direct parent. */
145 /* and now we only have to propagate the changes from our direct
146 parent, if there are any. */
147 assert((win->_pary <= pp->_maxy) &&
148 ((win->_pary + win->_maxy) <= pp->_maxy));
150 for (y = 0; y <= win->_maxy; y++)
152 if (pp->_line[win->_pary + y].firstchar >= 0) /* parent changed */
154 /* left and right character in child coordinates */
155 int left = pp->_line[win->_pary + y].firstchar - win->_parx;
156 int right = pp->_line[win->_pary + y].lastchar - win->_parx;
157 /* The change maybe outside the childs range */
160 if (right > win->_maxx)
162 if (win->_line[y].firstchar == _NOCHANGE)
164 win->_line[y].firstchar = left;
165 win->_line[y].lastchar = right;
169 if (left < win->_line[y].firstchar)
170 win->_line[y].firstchar = left;
171 if (win->_line[y].lastchar < right)
172 win->_line[y].lastchar = right;
179 void wcursyncup(WINDOW *win)
180 /* sync the cursor in all derived windows to its value in the base window */
183 for( wp = win; wp && wp->_parent; wp = wp->_parent ) {
184 wmove( wp->_parent, wp->_pary + wp->_cury, wp->_parx + wp->_curx );
188 WINDOW *dupwin(WINDOW *win)
189 /* make an exact duplicate of the given window */
195 T((T_CALLED("dupwin(%p)"), win));
198 ((nwin = newwin(win->_maxy + 1, win->_maxx + 1, win->_begy, win->_begx)) == NULL))
201 nwin->_curx = win->_curx;
202 nwin->_cury = win->_cury;
203 nwin->_maxy = win->_maxy;
204 nwin->_maxx = win->_maxx;
205 nwin->_begy = win->_begy;
206 nwin->_begx = win->_begx;
207 nwin->_yoffset = win->_yoffset;
209 nwin->_flags = win->_flags & ~_SUBWIN;
210 /* Due to the use of newwin(), the clone is not a subwindow.
211 * The text is really copied into the clone.
214 nwin->_attrs = win->_attrs;
215 nwin->_bkgd = win->_bkgd;
217 nwin->_clear = win->_clear;
218 nwin->_scroll = win->_scroll;
219 nwin->_leaveok = win->_leaveok;
220 nwin->_use_keypad = win->_use_keypad;
221 nwin->_delay = win->_delay;
222 nwin->_immed = win->_immed;
223 nwin->_sync = win->_sync;
227 nwin->_parent = (WINDOW*)0;
228 /* See above: the clone isn't a subwindow! */
230 nwin->_regtop = win->_regtop;
231 nwin->_regbottom = win->_regbottom;
233 linesize = (win->_maxx + 1) * sizeof(chtype);
234 for (i = 0; i <= nwin->_maxy; i++) {
235 memcpy(nwin->_line[i].text, win->_line[i].text, linesize);
236 nwin->_line[i].firstchar = win->_line[i].firstchar;
237 nwin->_line[i].lastchar = win->_line[i].lastchar;