/**************************************************************************** * Copyright (c) 2017-2018,2019 Free Software Foundation, Inc. * * * * 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: extended_color.c,v 1.13 2019/01/21 14:59:34 tom Exp $ */ #include #if USE_EXTENDED_COLOR #define SHOW(n) ((n) == ERR ? "ERR" : "OK") #if USE_SP_FUNCS static bool opt_s = FALSE; #define if_opt_s(a,b) (opt_s ? (a) : (b)) #else #define if_opt_s(a,b) (b) #endif static void failed(const char *name) { printw("...%s failed", name); getch(); endwin(); ExitProgram(EXIT_FAILURE); } static void do_pair_content(SCREEN *sp, int pair) { int i, f, b; (void) sp; i = if_opt_s(extended_pair_content_sp(sp, pair, &f, &b), extended_pair_content(0, &f, &b)); if (i != OK) failed("pair_content"); printw("pair %d contains (%d,%d)\n", pair, f, b); getch(); } static void do_init_pair(SCREEN *sp, int pair, int fg, int bg) { int i; (void) sp; i = if_opt_s(init_extended_pair_sp(sp, pair, fg, bg), init_extended_pair(pair, fg, bg)); if (i != OK) failed("init_pair"); } static void do_init_color(SCREEN *sp, int color, int adjust) { int r, g, b; int i; (void) sp; i = if_opt_s(extended_color_content_sp(sp, color, &r, &g, &b), extended_color_content(color, &r, &g, &b)); if (i != OK) failed("color_content"); r = (adjust + 1000 + r) % 1000; g = (adjust + 1000 + g) % 1000; b = (adjust + 1000 + b) % 1000; i = if_opt_s(init_extended_color_sp(sp, color, r, g, b), init_extended_color(color, r, g, b)); if (i != OK) failed("init_color"); } static void do_color_set(const char *expected, int pair) { int i = color_set((short) pair, (void *) &pair); printw("%s (%s)\n", expected, SHOW(i)); if (i != OK) failed("color_set"); getch(); } static void show_1_rgb(SCREEN *sp, const char *name, int color, int y, int x) { int r, g, b; int i; (void) sp; i = if_opt_s(extended_color_content_sp(sp, color, &r, &g, &b), extended_color_content(color, &r, &g, &b)); wmove(stdscr, y, x); if (i == OK) { printw("%-8s %3d/%3d/%3d", name, r, g, b); } else { printw("%-8s %s", name, SHOW(i)); } } static void show_rgb(SCREEN *sp) { int y, x; getyx(stdscr, y, x); show_1_rgb(sp, "RED", COLOR_RED, y + 1, x); show_1_rgb(sp, "GREEN", COLOR_GREEN, y + 2, x); show_1_rgb(sp, "BLUE", COLOR_BLUE, y + 3, x); wmove(stdscr, y, x); } static void usage(void) { static const char *tbl[] = { "Usage: extended_color", "", "Options:", " -s use sp-funcs", NULL }; size_t n; for (n = 0; n < SIZEOF(tbl); ++n) { fprintf(stderr, "%s\n", tbl[n]); } ExitProgram(EXIT_FAILURE); } int main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED) { int i; SCREEN *sp; while ((i = getopt(argc, argv, "s")) != -1) { switch (i) { #if USE_SP_FUNCS case 's': opt_s = TRUE; break; #endif default: usage(); /* NOTREACHED */ } } slk_init(1); sp = newterm(NULL, stdout, stdin); cbreak(); noecho(); if (!has_colors()) { endwin(); fprintf(stderr, "This demo requires a color terminal\n"); ExitProgram(EXIT_FAILURE); } start_color(); do_pair_content(sp, 0); printw("Initializing pair 1 to red/black\n"); do_init_pair(sp, 1, COLOR_RED, COLOR_BLACK); do_color_set("RED/BLACK", 1); printw("Initializing pair 2 to white/blue\n"); do_init_pair(sp, 2, COLOR_WHITE, COLOR_BLUE); do_color_set("WHITE/BLUE", 2); printw("Initializing pair 3 to green/black\n"); do_init_pair(sp, 3, COLOR_GREEN, COLOR_BLACK); do_color_set("GREEN/BLACK", 3); printw("Resetting colors to pair 0\n"); do_color_set("Default Colors", 0); printw("Resetting colors to pair 1\n"); do_color_set("RED/BLACK", 1); printw("Drawing soft-key tabs with pair 2\n"); slk_attrset(A_BOLD); /* reverse-video is hard to see */ i = if_opt_s(extended_slk_color_sp(sp, 2), extended_slk_color(2)); for (i = 1; i <= 8; ++i) { char temp[80]; _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp)) "(SLK-%d)", i); slk_set(i, temp, 0); } slk_touch(); slk_noutrefresh(); i = if_opt_s(can_change_color_sp(sp), can_change_color()); if (i) { do_color_set("Default Colors", 0); printw("Press any key to stop...\n"); nodelay(stdscr, TRUE); while (getch() == ERR) { show_rgb(sp); do_init_color(sp, COLOR_RED, 1); do_init_color(sp, COLOR_BLUE, -1); napms(50); } printw("...done"); nodelay(stdscr, FALSE); getch(); } endwin(); ExitProgram(EXIT_SUCCESS); } #else int main(void) { printf("This program requires the ncurses extended color/pair functions\n"); ExitProgram(EXIT_FAILURE); } #endif