1/**************************************************************************** 2 * Copyright (c) 1999-2002,2004 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/* 30 * Author: Thomas E. Dickey <dickey@clark.net> 1999 31 * 32 * $Id: dots.c,v 1.11 2005/05/28 21:38:45 tom Exp $ 33 * 34 * A simple demo of the terminfo interface. 35 */ 36#include <test.priv.h> 37 38#include <time.h> 39 40#define valid(s) ((s != 0) && s != (char *)-1) 41 42static bool interrupted = FALSE; 43 44static int 45outc(int c) 46{ 47 if (interrupted) { 48 char tmp = c; 49 write(STDOUT_FILENO, &tmp, 1); 50 } else { 51 putc(c, stdout); 52 } 53 return 0; 54} 55 56static bool 57outs(char *s) 58{ 59 if (valid(s)) { 60 tputs(s, 1, outc); 61 return TRUE; 62 } 63 return FALSE; 64} 65 66static void 67cleanup(void) 68{ 69 outs(exit_attribute_mode); 70 if (!outs(orig_colors)) 71 outs(orig_pair); 72 outs(clear_screen); 73 outs(cursor_normal); 74} 75 76static void 77onsig(int n GCC_UNUSED) 78{ 79 interrupted = TRUE; 80 cleanup(); 81 ExitProgram(EXIT_FAILURE); 82} 83 84static float 85ranf(void) 86{ 87 long r = (rand() & 077777); 88 return ((float) r / 32768.); 89} 90 91int 92main( 93 int argc GCC_UNUSED, 94 char *argv[]GCC_UNUSED) 95{ 96 int x, y, z, j, p; 97 float r; 98 float c; 99 100 for (j = SIGHUP; j <= SIGTERM; j++) 101 if (signal(j, SIG_IGN) != SIG_IGN) 102 signal(j, onsig); 103 104 srand((unsigned) time(0)); 105 setupterm((char *) 0, 1, (int *) 0); 106 outs(clear_screen); 107 outs(cursor_invisible); 108 if (max_colors > 1) { 109 if (!valid(set_a_foreground) 110 || !valid(set_a_background) 111 || (!valid(orig_colors) && !valid(orig_pair))) 112 max_colors = -1; 113 } 114 115 r = (float) (lines - 4); 116 c = (float) (columns - 4); 117 118 for (;;) { 119 x = (int) (c * ranf()) + 2; 120 y = (int) (r * ranf()) + 2; 121 p = (ranf() > 0.9) ? '*' : ' '; 122 123 tputs(tparm3(cursor_address, y, x), 1, outc); 124 if (max_colors > 0) { 125 z = (int) (ranf() * max_colors); 126 if (ranf() > 0.01) { 127 tputs(tparm2(set_a_foreground, z), 1, outc); 128 } else { 129 tputs(tparm2(set_a_background, z), 1, outc); 130 napms(1); 131 } 132 } else if (valid(exit_attribute_mode) 133 && valid(enter_reverse_mode)) { 134 if (ranf() <= 0.01) { 135 outs((ranf() > 0.6) 136 ? enter_reverse_mode 137 : exit_attribute_mode); 138 napms(1); 139 } 140 } 141 outc(p); 142 fflush(stdout); 143 } 144} 145