| /**************************************************************************** |
| * Copyright 2019,2020 Thomas E. Dickey * |
| * * |
| * Permission is hereby granted, free of charge, to any person obtaining a * |
| * copy of this software and associated documentation files (the * |
| * "Software"), to deal in the Software without restriction, including * |
| * without limitation the rights to use, copy, modify, merge, publish, * |
| * distribute, distribute with modifications, sublicense, and/or sell * |
| * copies of the Software, and to permit persons to whom the Software is * |
| * furnished to do so, subject to the following conditions: * |
| * * |
| * The above copyright notice and this permission notice shall be included * |
| * in all copies or substantial portions of the Software. * |
| * * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
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| * * |
| * Except as contained in this notice, the name(s) of the above copyright * |
| * holders shall not be used in advertising or otherwise to promote the * |
| * sale, use or other dealings in this Software without prior written * |
| * authorization. * |
| ****************************************************************************/ |
| |
| /* |
| * Author: Thomas E. Dickey |
| * |
| * $Id: demo_tabs.c,v 1.5 2020/02/02 23:34:34 tom Exp $ |
| * |
| * A simple demo of tabs in curses. |
| */ |
| #define USE_TINFO |
| #include "test.priv.h" |
| |
| static void |
| usage(void) |
| { |
| static const char *msg[] = |
| { |
| "Usage: demo_tabs [options]", |
| "", |
| "Print a grid to test tab-stops with the curses interface", |
| "", |
| "Options:", |
| " -l COUNT total number of lines to show", |
| " -t NUM set TABSIZE variable to the given value", |
| }; |
| unsigned n; |
| for (n = 0; n < SIZEOF(msg); ++n) { |
| fprintf(stderr, "%s\n", msg[n]); |
| } |
| ExitProgram(EXIT_FAILURE); |
| } |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| int tabstop; |
| int n, col, row, step; |
| int line_limit = -1; |
| int curses_stops = -1; |
| |
| while ((n = getopt(argc, argv, "l:t:")) != -1) { |
| switch (n) { |
| case 'l': |
| line_limit = atoi(optarg); |
| break; |
| case 't': |
| curses_stops = atoi(optarg); |
| break; |
| default: |
| usage(); |
| break; |
| } |
| } |
| |
| initscr(); |
| noecho(); |
| cbreak(); |
| if (curses_stops > 0) |
| set_tabsize(curses_stops); |
| #if HAVE_TIGETNUM |
| tabstop = tigetnum("it"); |
| if (tabstop <= 0) |
| #endif |
| tabstop = 8; |
| for (row = 0; row < LINES; ++row) { |
| move(row, 0); |
| for (col = step = 0; col < COLS - 1; ++col) { |
| if (row == 0) { |
| chtype ch = '-'; |
| if ((col % tabstop) == 0) |
| ch = '+'; |
| addch(ch); |
| } else if (col + 1 < row) { |
| addch('*'); |
| } else { |
| printw("%x", step); |
| col = (row + (tabstop * ++step)); |
| col /= tabstop; |
| col *= tabstop; |
| col -= 1; |
| if ((col + tabstop) < COLS) |
| addch('\t'); |
| refresh(); |
| } |
| } |
| addch('\n'); |
| if (line_limit > 0 && row >= line_limit) |
| break; |
| } |
| getch(); |
| endwin(); |
| ExitProgram(EXIT_SUCCESS); |
| } |