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Diffstat (limited to 'test/back_ground.c')
| -rw-r--r-- | test/back_ground.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/test/back_ground.c b/test/back_ground.c new file mode 100644 index 0000000..1002824 --- /dev/null +++ b/test/back_ground.c @@ -0,0 +1,300 @@ +/**************************************************************************** + * Copyright 2021 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. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * 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. * + ****************************************************************************/ +/* + * $Id: back_ground.c,v 1.5 2021/02/20 12:23:21 tom Exp $ + */ + +#include <test.priv.h> + +#if USE_WIDEC_SUPPORT + +#define NEED_COLOR_CODE 1 +#define NEED_COLOR_NAME 1 +#include <color_name.h> +#include <dump_window.h> + +static int default_bg = COLOR_BLACK; +static int default_fg = COLOR_WHITE; +static wchar_t wide_fill = L' '; + +static wchar_t +decode_wchar(const char *value) +{ + long result; + char *next = NULL; + int radix = 0; + + if (!strncmp(value, "U+", 2)) { + value += 2; + radix = 16; + } + result = strtol(value, &next, radix); + if (next == value || (next == NULL || *next != '\0')) { + fprintf(stderr, "decoding wchar_t: %s\n", value); + exit(EXIT_FAILURE); + } + return (wchar_t) result; +} + +static void +test_background(void) +{ + NCURSES_COLOR_T f, b; + int row; + int chr; + wchar_t blank[2]; + wchar_t graphics[2]; + cchar_t data; + + if (pair_content(0, &f, &b) == ERR) { + printw("pair 0 contains no data\n"); + } else { + printw("pair 0 contains (%d,%d)\n", (int) f, (int) b); + } + dump_window(stdscr); + + blank[0] = wide_fill; + blank[1] = L'\0'; + + printw("Initializing pair 1 to red/%s\n", color_name(default_bg)); + init_pair(1, COLOR_RED, (NCURSES_COLOR_T) default_bg); + setcchar(&data, blank, A_NORMAL, 1, NULL); + bkgrndset(&data); + printw("RED/BLACK\n"); + dump_window(stdscr); + + printw("Initializing pair 2 to %s/blue\n", color_name(default_fg)); + init_pair(2, (NCURSES_COLOR_T) default_fg, COLOR_BLUE); + setcchar(&data, blank, A_NORMAL, 2, NULL); + bkgrndset(&data); + printw("This line should be %s/blue\n", color_name(default_fg)); + dump_window(stdscr); + + printw("Initializing pair 3 to %s/cyan (ACS_HLINE)\n", color_name(default_fg)); + init_pair(3, (NCURSES_COLOR_T) default_fg, COLOR_CYAN); + printw("...and drawing a box which should be followed by lines\n"); + graphics[0] = ACS_HLINE & A_CHARTEXT; + graphics[1] = L'\0'; + setcchar(&data, graphics, A_ALTCHARSET, 3, NULL); + bkgrndset(&data); + /* + * Characters from vt100 line-drawing should be mapped to line-drawing, + * since A_ALTCHARSET is set in the background, and the character part + * of the background is replaced by the nonblank characters written. + * + * Characters not in the line-drawing range are usually sent as-is. + * + * With SVr4 curses it is possible to rely on this to mix uppercase text + * with the (lowercase) line-drawing characters. ncurses uses some of + * the uppercase characters for encoding thick- and double-lines. + */ + row = 7; + mvprintw(row++, 10, "l"); + for (chr = 0; chr < 32; ++chr) + AddCh(' '); + printw("x\n"); + chr = 32; + while (chr < 128) { + if ((chr % 32) == 0) + mvprintw(row++, 10, "x"); + AddCh((chr == 127) ? ' ' : chr); + if ((++chr % 32) == 0) + printw("x\n"); + } + mvprintw(row++, 10, "m"); + for (chr = 0; chr < 32; ++chr) + AddCh(' '); + printw("j\n"); + dump_window(stdscr); + + setcchar(&data, blank, A_NORMAL, 0, NULL); + bkgrndset(&data); + printw("Default Colors\n"); + dump_window(stdscr); + + printw("Resetting colors to pair 1\n"); + setcchar(&data, blank, A_NORMAL, 1, NULL); + bkgrndset(&data); + printw("This line should be red/%s\n", color_name(default_bg)); + dump_window(stdscr); + + printw("Setting screen to pair 0\n"); + setcchar(&data, blank, A_NORMAL, 0, NULL); + bkgrndset(&data); + dump_window(stdscr); + + printw("Setting screen to pair 1\n"); + setcchar(&data, blank, A_NORMAL, 1, NULL); + bkgrndset(&data); + dump_window(stdscr); + + printw("Setting screen to pair 2\n"); + setcchar(&data, blank, A_NORMAL, 2, NULL); + bkgrndset(&data); + dump_window(stdscr); + + printw("Setting screen to pair 3\n"); + setcchar(&data, blank, A_NORMAL, 3, NULL); + bkgrndset(&data); + dump_window(stdscr); + + printw("Setting screen to pair 0\n"); + setcchar(&data, blank, A_NORMAL, 0, NULL); + bkgrndset(&data); + dump_window(stdscr); +} + +static void +usage(void) +{ + static const char *msg[] = + { + "Usage: background [options]" + ,"" + ,"Options:" +#if HAVE_ASSUME_DEFAULT_COLORS + ," -a invoke assume_default_colors, repeat to use in init_pair" +#endif + ," -b XXX specify background color" +#if HAVE_USE_DEFAULT_COLORS + ," -d invoke use_default_colors, repeat to use in init_pair" +#endif + ," -f XXX specify foreground color" + ," -l FILE log window-dumps to this file" + ," -w fill background with stipple pattern" + ," -W CODE fill background with this Unicode value" + }; + size_t n; + + for (n = 0; n < SIZEOF(msg); n++) + fprintf(stderr, "%s\n", msg[n]); + + ExitProgram(EXIT_FAILURE); +} + +int +main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED) +{ +#if HAVE_ASSUME_DEFAULT_COLORS + int a_option = 0; +#endif +#if HAVE_USE_DEFAULT_COLORS + int d_option = 0; +#endif + int n; + + setlocale(LC_ALL, ""); + + while ((n = getopt(argc, argv, "ab:df:l:wW:")) != -1) { + switch (n) { +#if HAVE_ASSUME_DEFAULT_COLORS + case 'a': + ++a_option; + break; +#endif + case 'b': + default_bg = color_code(optarg); + break; +#if HAVE_USE_DEFAULT_COLORS + case 'd': + ++d_option; + break; +#endif + case 'f': + default_fg = color_code(optarg); + break; + case 'l': + if (!open_dump(optarg)) + usage(); + break; + case 'w': + wide_fill = L'\u2591'; + break; + case 'W': + wide_fill = decode_wchar(optarg); + break; + default: + usage(); + } + } +#if HAVE_USE_DEFAULT_COLORS && HAVE_ASSUME_DEFAULT_COLORS + if (a_option && d_option) { + fprintf(stderr, "Use either -a or -d option, but not both\n"); + ExitProgram(EXIT_FAILURE); + } +#endif + + initscr(); + cbreak(); + noecho(); + + if (has_colors()) { + start_color(); + +#if HAVE_USE_DEFAULT_COLORS + if (d_option) { + printw("Using default colors...\n"); + use_default_colors(); + if (d_option > 1) { + default_fg = -1; + default_bg = -1; + } + } +#endif +#if HAVE_ASSUME_DEFAULT_COLORS + if (a_option) { + printw("Using assumed colors %s/%s...\n", + color_name(default_fg), + color_name(default_bg)); + assume_default_colors(default_fg, default_bg); + if (a_option > 1) { + default_fg = -1; + default_bg = -1; + } + } +#endif + + test_background(); + + } else { + printw("This demo requires a color terminal"); + getch(); + } + endwin(); + close_dump(); + ExitProgram(EXIT_SUCCESS); +} + +#else +int +main(void) +{ + printf("This program requires the wide-curses library\n"); + ExitProgram(EXIT_FAILURE); +} +#endif /* USE_WIDEC_SUPPORT */ |