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29 * $Id: demo_new_pair.c,v 1.10 2017/03/10 09:47:15 tom Exp $
31 * Demonstrate the alloc_pair() function.
34 #include <test.priv.h>
37 #if HAVE_ALLOC_PAIR && USE_WIDEC_SUPPORT
39 #define MAX_BITS 8 /* all but A_ALTCHARSET */
40 #define MAX_ATTR ((1<<MAX_BITS)-1)
43 valid_cap(NCURSES_CONST char *name)
45 char *value = tigetstr(name);
46 return (value != 0 && value != (char *) -1) ? TRUE : FALSE;
52 static bool init = FALSE;
53 static attr_t table[MAX_BITS * MAX_BITS];
58 attr_t bits[MAX_BITS];
61 bits[limit++] = A_NORMAL;
62 if (valid_cap("smso"))
63 bits[limit++] = A_STANDOUT;
64 if (valid_cap("smul"))
65 bits[limit++] = A_UNDERLINE;
67 bits[limit++] = A_REVERSE;
68 if (valid_cap("blink"))
69 bits[limit++] = A_BLINK;
71 bits[limit++] = A_DIM;
72 if (valid_cap("bold"))
73 bits[limit++] = A_BOLD;
74 for (j = 0; j < limit; ++j) {
75 for (k = 0; k < limit; ++k) {
76 table[j * limit + k] = bits[j] | bits[k];
80 return table[now % limit];
84 our_content(int pair, int *fg, int *bg)
87 *fg = (pair / COLORS) % COLORS;
88 *bg = (pair % COLORS);
95 our_content(now, &fg, &bg);
96 return alloc_pair(fg, bg);
103 if ((short) now > 0) {
104 if (now < COLOR_PAIRS) {
106 our_content(now, &fg, &bg);
107 if (init_pair((short) now, (short) fg, (short) bg) != OK)
118 show_help(const char **help)
120 WINDOW *mywin = newwin(LINES, COLS, 0, 0);
124 for (n = 0; help[n] != 0; ++n) {
125 wmove(mywin, 1 + n, 2);
126 wprintw(mywin, "%.*s\n", COLS - 4, help[n]);
138 return time((time_t *) 0);
144 static const char *msg[] =
146 "Usage: demo_new_pair [options]",
148 "Repeatedly print using all possible color combinations.",
151 " -i use init_pair rather than alloc_pair",
152 " -p start in paged-mode",
153 " -s start in single-step mode",
154 " -w print a wide-character cell",
157 for (n = 0; n < SIZEOF(msg); ++n) {
158 fprintf(stderr, "%s\n", msg[n]);
160 ExitProgram(EXIT_FAILURE);
163 #define use_pages() \
164 paged_mode = TRUE, single_mode = TRUE
166 #define use_single() \
167 paged_mode = FALSE, single_mode = TRUE
169 #define update_modes() \
170 scrollok(stdscr, !paged_mode); \
171 nodelay(stdscr, !single_mode || paged_mode)
174 main(int argc, char *argv[])
176 static const char *help[] =
178 "This program iterates over the possible color combinations,",
179 "allocating or initializing color pairs. For best results,",
180 "choose screen-width dividing evenly into the number of colors,",
183 " 32x64,32x128 256 colors",
184 " 24x44,24x88 88 colors",
185 " 32x64,24x128 16 colors",
188 " c toggle between coloring and de-coloring cells",
189 " p show one page at a time",
190 " s show one character at a time",
191 " <space> display char/page without pausing",
192 " v/V cycle through video attributes",
193 " w toggle between \"#\" and a double-width equivalent",
194 " ? print this screen (exit on any character).",
196 "To exit this program, press ^Q, ^[ or \"q\".",
201 bool clobber = FALSE;
202 bool hascolor = FALSE;
203 bool use_init = FALSE;
204 bool use_wide = FALSE;
205 bool paged_mode = FALSE;
206 bool single_mode = FALSE;
211 time_t start = now();
212 long total_cells = 0;
214 setlocale(LC_ALL, "");
216 while ((ch = getopt(argc, argv, "ipsw")) != -1) {
236 if (newterm(NULL, stderr, stdin) == 0)
238 (void) cbreak(); /* read chars without wait for \n */
239 (void) noecho(); /* don't echo input */
243 keypad(stdscr, TRUE);
245 if ((hascolor = has_colors())) {
253 * Repeatedly cycle through all colors, initializing pairs as needed.
254 * Provide for single-stepping, or page-at-a-time, as well as quitting.
288 if (--video_mode < 0)
289 video_mode = MAX_ATTR;
292 if (video_mode > MAX_ATTR)
296 use_wide = !use_wide;
305 my_attrs = next_attr(video_mode);
308 our_content(current, &fg, &bg);
309 my_pair = find_pair(fg, bg);
316 ? next_color(current)
317 : make_color(current));
320 my_attrs = next_attr(current);
325 wch[0] = use_wide ? 0xff03 : '#';
327 setcchar(&temp, wch, my_attrs, (short) my_pair, NULL);
329 * At the end of a page, move the cursor to the home position.
331 if ((add_wch(&temp) == ERR) && paged_mode) {
332 nodelay(stdscr, !single_mode);
335 total_cells += 1 + (use_wide ? 1 : 0);
340 printf("%.1f cells/second\n",
341 (double) (total_cells) / (double) (now() - start));
343 ExitProgram(EXIT_SUCCESS);
350 printf("This program requires the ncurses alloc_pair function\n");
351 ExitProgram(EXIT_FAILURE);