301 lines
8.4 KiB
C
301 lines
8.4 KiB
C
/****************************************************************************
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* Copyright 2021 Thomas E. Dickey *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/*
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* $Id: back_ground.c,v 1.5 2021/02/20 12:23:21 tom Exp $
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*/
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#include <test.priv.h>
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#if USE_WIDEC_SUPPORT
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#define NEED_COLOR_CODE 1
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#define NEED_COLOR_NAME 1
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#include <color_name.h>
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#include <dump_window.h>
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static int default_bg = COLOR_BLACK;
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static int default_fg = COLOR_WHITE;
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static wchar_t wide_fill = L' ';
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static wchar_t
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decode_wchar(const char *value)
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{
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long result;
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char *next = NULL;
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int radix = 0;
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if (!strncmp(value, "U+", 2)) {
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value += 2;
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radix = 16;
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}
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result = strtol(value, &next, radix);
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if (next == value || (next == NULL || *next != '\0')) {
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fprintf(stderr, "decoding wchar_t: %s\n", value);
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exit(EXIT_FAILURE);
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}
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return (wchar_t) result;
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}
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static void
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test_background(void)
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{
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NCURSES_COLOR_T f, b;
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int row;
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int chr;
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wchar_t blank[2];
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wchar_t graphics[2];
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cchar_t data;
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if (pair_content(0, &f, &b) == ERR) {
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printw("pair 0 contains no data\n");
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} else {
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printw("pair 0 contains (%d,%d)\n", (int) f, (int) b);
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}
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dump_window(stdscr);
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blank[0] = wide_fill;
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blank[1] = L'\0';
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printw("Initializing pair 1 to red/%s\n", color_name(default_bg));
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init_pair(1, COLOR_RED, (NCURSES_COLOR_T) default_bg);
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setcchar(&data, blank, A_NORMAL, 1, NULL);
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bkgrndset(&data);
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printw("RED/BLACK\n");
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dump_window(stdscr);
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printw("Initializing pair 2 to %s/blue\n", color_name(default_fg));
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init_pair(2, (NCURSES_COLOR_T) default_fg, COLOR_BLUE);
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setcchar(&data, blank, A_NORMAL, 2, NULL);
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bkgrndset(&data);
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printw("This line should be %s/blue\n", color_name(default_fg));
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dump_window(stdscr);
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printw("Initializing pair 3 to %s/cyan (ACS_HLINE)\n", color_name(default_fg));
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init_pair(3, (NCURSES_COLOR_T) default_fg, COLOR_CYAN);
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printw("...and drawing a box which should be followed by lines\n");
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graphics[0] = ACS_HLINE & A_CHARTEXT;
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graphics[1] = L'\0';
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setcchar(&data, graphics, A_ALTCHARSET, 3, NULL);
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bkgrndset(&data);
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/*
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* Characters from vt100 line-drawing should be mapped to line-drawing,
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* since A_ALTCHARSET is set in the background, and the character part
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* of the background is replaced by the nonblank characters written.
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*
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* Characters not in the line-drawing range are usually sent as-is.
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*
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* With SVr4 curses it is possible to rely on this to mix uppercase text
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* with the (lowercase) line-drawing characters. ncurses uses some of
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* the uppercase characters for encoding thick- and double-lines.
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*/
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row = 7;
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mvprintw(row++, 10, "l");
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for (chr = 0; chr < 32; ++chr)
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AddCh(' ');
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printw("x\n");
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chr = 32;
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while (chr < 128) {
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if ((chr % 32) == 0)
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mvprintw(row++, 10, "x");
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AddCh((chr == 127) ? ' ' : chr);
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if ((++chr % 32) == 0)
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printw("x\n");
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}
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mvprintw(row++, 10, "m");
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for (chr = 0; chr < 32; ++chr)
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AddCh(' ');
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printw("j\n");
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dump_window(stdscr);
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setcchar(&data, blank, A_NORMAL, 0, NULL);
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bkgrndset(&data);
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printw("Default Colors\n");
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dump_window(stdscr);
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printw("Resetting colors to pair 1\n");
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setcchar(&data, blank, A_NORMAL, 1, NULL);
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bkgrndset(&data);
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printw("This line should be red/%s\n", color_name(default_bg));
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dump_window(stdscr);
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printw("Setting screen to pair 0\n");
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setcchar(&data, blank, A_NORMAL, 0, NULL);
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bkgrndset(&data);
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dump_window(stdscr);
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printw("Setting screen to pair 1\n");
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setcchar(&data, blank, A_NORMAL, 1, NULL);
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bkgrndset(&data);
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dump_window(stdscr);
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printw("Setting screen to pair 2\n");
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setcchar(&data, blank, A_NORMAL, 2, NULL);
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bkgrndset(&data);
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dump_window(stdscr);
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printw("Setting screen to pair 3\n");
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setcchar(&data, blank, A_NORMAL, 3, NULL);
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bkgrndset(&data);
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dump_window(stdscr);
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printw("Setting screen to pair 0\n");
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setcchar(&data, blank, A_NORMAL, 0, NULL);
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bkgrndset(&data);
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dump_window(stdscr);
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}
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static void
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usage(void)
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{
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static const char *msg[] =
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{
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"Usage: background [options]"
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,""
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,"Options:"
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#if HAVE_ASSUME_DEFAULT_COLORS
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," -a invoke assume_default_colors, repeat to use in init_pair"
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#endif
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," -b XXX specify background color"
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#if HAVE_USE_DEFAULT_COLORS
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," -d invoke use_default_colors, repeat to use in init_pair"
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#endif
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," -f XXX specify foreground color"
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," -l FILE log window-dumps to this file"
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," -w fill background with stipple pattern"
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," -W CODE fill background with this Unicode value"
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};
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size_t n;
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for (n = 0; n < SIZEOF(msg); n++)
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fprintf(stderr, "%s\n", msg[n]);
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ExitProgram(EXIT_FAILURE);
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}
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int
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main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
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{
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#if HAVE_ASSUME_DEFAULT_COLORS
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int a_option = 0;
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#endif
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#if HAVE_USE_DEFAULT_COLORS
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int d_option = 0;
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#endif
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int n;
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setlocale(LC_ALL, "");
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while ((n = getopt(argc, argv, "ab:df:l:wW:")) != -1) {
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switch (n) {
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#if HAVE_ASSUME_DEFAULT_COLORS
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case 'a':
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++a_option;
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break;
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#endif
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case 'b':
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default_bg = color_code(optarg);
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break;
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#if HAVE_USE_DEFAULT_COLORS
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case 'd':
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++d_option;
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break;
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#endif
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case 'f':
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default_fg = color_code(optarg);
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break;
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case 'l':
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if (!open_dump(optarg))
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usage();
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break;
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case 'w':
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wide_fill = L'\u2591';
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break;
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case 'W':
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wide_fill = decode_wchar(optarg);
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break;
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default:
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usage();
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}
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}
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#if HAVE_USE_DEFAULT_COLORS && HAVE_ASSUME_DEFAULT_COLORS
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if (a_option && d_option) {
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fprintf(stderr, "Use either -a or -d option, but not both\n");
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ExitProgram(EXIT_FAILURE);
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}
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#endif
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initscr();
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cbreak();
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noecho();
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if (has_colors()) {
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start_color();
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#if HAVE_USE_DEFAULT_COLORS
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if (d_option) {
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printw("Using default colors...\n");
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use_default_colors();
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if (d_option > 1) {
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default_fg = -1;
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default_bg = -1;
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}
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}
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#endif
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#if HAVE_ASSUME_DEFAULT_COLORS
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if (a_option) {
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printw("Using assumed colors %s/%s...\n",
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color_name(default_fg),
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color_name(default_bg));
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assume_default_colors(default_fg, default_bg);
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if (a_option > 1) {
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default_fg = -1;
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default_bg = -1;
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}
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}
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#endif
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test_background();
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} else {
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printw("This demo requires a color terminal");
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getch();
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}
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endwin();
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close_dump();
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ExitProgram(EXIT_SUCCESS);
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}
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#else
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int
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main(void)
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{
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printf("This program requires the wide-curses library\n");
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ExitProgram(EXIT_FAILURE);
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}
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#endif /* USE_WIDEC_SUPPORT */
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