1 /****************************************************************************
2 * Copyright 2020-2021,2022 Thomas E. Dickey *
3 * Copyright 2006-2012,2017 Free Software Foundation, Inc. *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
28 ****************************************************************************/
30 * $Id: redraw.c,v 1.17 2022/12/10 22:28:50 tom Exp $
32 * Demonstrate the redrawwin() and wredrawln() functions.
33 * Thomas Dickey - 2006/11/4
36 #include <test.priv.h>
37 #include <popup_msg.h>
40 trash(int beg_x, int max_x, int cur_x)
44 for (x = cur_x; x > beg_x; --x) {
47 for (x = beg_x; x < max_x; ++x) {
55 for (x = max_x; x > cur_x; --x) {
62 test_redraw(WINDOW *win)
64 static const char *help[] =
68 " w - recur in a new window",
69 " ! - overwrite current line using stdio outside curses.",
70 #ifdef NCURSES_VERSION
71 " @ - run \"date\" command, to put its output on screen.",
73 " ^L - call redrawwin() for current window.",
74 " ^W - call wredrawln() for current line/current window.",
75 " arrow-keys - move cursor on the screen",
77 "Other control characters are added to the screen in printable form.",
78 "Other printable characters are added to the screen as is.",
92 getmaxyx(win, max_y, max_x);
93 getbegyx(win, beg_y, beg_x);
108 win1 = newwin(max_y, max_x,
110 win2 = newwin(max_y - 2, max_x - 2,
111 beg_y + 1, beg_x + 1);
125 * redrawwin() and wredrawln() do not take into account the
126 * possibility that the cursor may have moved. That makes them
127 * cumbersome for using with a shell command. So we simply
128 * trash the current line of the window using backspace/overwrite.
130 trash(beg_x, max_x, x + beg_x);
133 #ifdef NCURSES_VERSION
136 * For a shell command, we can work around the problem noted above
137 * using mvcur(). It is ifdef'd for NCURSES, since X/Open does
138 * not define the case where the old location is unknown.
140 IGNORE_RC(system("date"));
150 wredrawln(win, y, 1);
155 wmove(win, y - 1, x);
160 wmove(win, y + 1, x);
165 wmove(win, y, x - 1);
170 wmove(win, y, x + 1);
174 popup_msg(win, help);
179 waddstr(win, keyname(ch));
182 waddstr(win, unctrl(UChar(ch)));
194 static const char *tbl[] =
196 "Usage: redraw [options]"
200 ," -e use stderr (default stdout)"
201 ," -n do not initialize terminal"
204 for (n = 0; n < SIZEOF(tbl); ++n)
205 fprintf(stderr, "%s\n", tbl[n]);
206 ExitProgram(ok ? EXIT_SUCCESS : EXIT_FAILURE);
213 main(int argc, char *argv[])
216 bool no_init = FALSE;
217 FILE *my_fp = stdout;
219 while ((ch = getopt(argc, argv, OPTS_COMMON "en")) != -1) {
229 ExitProgram(EXIT_SUCCESS);
231 usage(ch == OPTS_USAGE);
241 newterm((char *) 0, my_fp, stdin);
248 ExitProgram(EXIT_SUCCESS);