blob: 82e63783363846a40719541d6c6100bbeeac4080 [file] [log] [blame]
Amit Daniel Kachhape6a01f52011-07-20 11:45:59 +05301/****************************************************************************
2 * Copyright (c) 2006,2007 Free Software Foundation, Inc. *
3 * *
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: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
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. *
22 * *
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 *
26 * authorization. *
27 ****************************************************************************/
28/*
29 * $Id: redraw.c,v 1.4 2007/06/30 17:55:06 tom Exp $
30 *
31 * Demonstrate the redrawwin() and wredrawln() functions.
32 * Thomas Dickey - 2006/11/4
33 */
34
35#include <test.priv.h>
36
37static void
38trash(int beg_x, int max_x, int cur_x)
39{
40 int x;
41
42 for (x = cur_x; x > beg_x; --x) {
43 putchar('\b');
44 }
45 for (x = beg_x; x < max_x; ++x) {
46 if (x < cur_x)
47 putchar('<');
48 else if (x == cur_x)
49 putchar('=');
50 else if (x > cur_x)
51 putchar('>');
52 }
53 for (x = max_x; x > cur_x; --x) {
54 putchar('\b');
55 }
56}
57
58static void
59test_redraw(WINDOW *win)
60{
61 WINDOW *win1;
62 WINDOW *win2;
63 bool done = FALSE;
64 int ch, y, x;
65 int max_y, max_x;
66 int beg_y, beg_x;
67
68 scrollok(win, TRUE);
69 keypad(win, TRUE);
70 getmaxyx(win, max_y, max_x);
71 getbegyx(win, beg_y, beg_x);
72 while (!done) {
73 ch = wgetch(win);
74 getyx(win, y, x);
75 switch (ch) {
76 case 'q':
77 /* FALLTHRU */
78 case ESCAPE:
79 done = TRUE;
80 break;
81 case 'w':
82 win1 = newwin(max_y, max_x,
83 beg_y, beg_x);
84 win2 = newwin(max_y - 2, max_x - 2,
85 beg_y + 1, beg_x + 1);
86 box(win1, 0, 0);
87 wrefresh(win1);
88
89 test_redraw(win2);
90
91 delwin(win2);
92 delwin(win1);
93
94 touchwin(win);
95 break;
96
97 case '!':
98 /*
99 * redrawwin() and wredrawln() do not take into account the
100 * possibility that the cursor may have moved. That makes them
101 * cumbersome for using with a shell command. So we simply
102 * trash the current line of the window using backspace/overwrite.
103 */
104 trash(beg_x, max_x, x + beg_x);
105 break;
106
107#ifdef NCURSES_VERSION
108 case '@':
109 /*
110 * For a shell command, we can work around the problem noted above
111 * using mvcur(). It is ifdef'd for NCURSES, since X/Open does
112 * not define the case where the old location is unknown.
113 */
114 system("date");
115 mvcur(-1, -1, y, x);
116 break;
117#endif
118
119 case CTRL('W'):
120 redrawwin(win);
121 break;
122
123 case CTRL('L'):
124 wredrawln(win, y, 1);
125 break;
126
127 case KEY_UP:
128 if (y > 0)
129 wmove(win, y - 1, x);
130 break;
131
132 case KEY_DOWN:
133 if (y < max_y)
134 wmove(win, y + 1, x);
135 break;
136
137 case KEY_LEFT:
138 if (x > 0)
139 wmove(win, y, x - 1);
140 break;
141
142 case KEY_RIGHT:
143 if (x < max_x)
144 wmove(win, y, x + 1);
145 break;
146
147 default:
148 if (ch > KEY_MIN) {
149 waddstr(win, keyname(ch));
150 } else {
151 waddstr(win, unctrl(UChar(ch)));
152 }
153 break;
154 }
155 wnoutrefresh(win);
156 doupdate();
157 }
158}
159
160int
161main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
162{
163 initscr();
164 raw();
165 noecho();
166 test_redraw(stdscr);
167 endwin();
168 ExitProgram(EXIT_SUCCESS);
169}