124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/* $NetBSD: colorbars.c,v 1.1 2012/06/06 00:13:36 christos Exp $ */
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/*-
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* Copyright (c) 2012 Nathanial Sloss <nathanialsloss@yahoo.com.au>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: colorbars.c,v 1.1 2012/06/06 00:13:36 christos Exp $");
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#include <curses.h>
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#include <stdio.h>
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#include <string.h>
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#include <err.h>
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#include <stdlib.h>
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int
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main(void)
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{
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static struct colorInfo {
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const char *name;
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int color;
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} colorInfo[] = {
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{ "Black", COLOR_BLACK },
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{ "Red", COLOR_RED },
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{ "Green", COLOR_GREEN },
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{ "Yellow", COLOR_YELLOW },
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{ "Blue", COLOR_BLUE },
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{ "Magenta", COLOR_MAGENTA },
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{ "Cyan", COLOR_CYAN },
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{ "White", COLOR_WHITE },
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};
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size_t lengths[__arraycount(colorInfo)];
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static const size_t numcolors = __arraycount(colorInfo);
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size_t labelwidth;
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int colorOK;
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int spacing, offsetx, labeloffsety, labeloffsetx;
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if (!initscr())
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errx(EXIT_FAILURE, "Cannot initialize curses");
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colorOK = has_colors();
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if (!colorOK) {
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endwin();
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errx(EXIT_FAILURE, "Terminal cannot display color");
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}
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if (COLS < 45 || LINES < 10) {
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endwin();
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errx(EXIT_FAILURE, "Terminal size must be at least 45x10.");
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}
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spacing = COLS / numcolors;
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offsetx = (COLS - (spacing * numcolors)) / 2;
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start_color();
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labelwidth = 0;
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for (size_t i = 0; i < numcolors; i++) {
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lengths[i] = strlen(colorInfo[i].name);
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if (lengths[i] > labelwidth)
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labelwidth = lengths[i];
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init_pair(i, COLOR_WHITE, colorInfo[i].color);
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}
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labeloffsetx = spacing / 2;
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labeloffsety = (LINES - 1 - labelwidth) / 2;
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clear();
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move(0, 0);
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for (size_t i = 0; i < numcolors; i++) {
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int xoffs = offsetx + spacing * i;
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attrset(COLOR_PAIR(i));
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for (int line = 0; line < LINES - 1; line++)
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for (int xpos = 0; xpos < spacing; xpos++)
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mvprintw(line, xoffs + xpos, " ");
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attrset(COLOR_PAIR(0));
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xoffs += labeloffsetx;
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for (size_t line = 0; line < lengths[i]; line++)
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mvprintw(line + labeloffsety, xoffs, "%c",
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colorInfo[i].name[line]);
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}
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attrset(COLOR_PAIR(0));
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mvprintw(LINES - 1, 0, "ANSI Color chart - Press any key to exit: ");
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refresh();
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getch();
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endwin();
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return EXIT_SUCCESS;
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}
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