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Diffstat (limited to 'ui.c')
| -rw-r--r-- | ui.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/ui.c b/ui.c new file mode 100644 index 0000000..d0f56f0 --- /dev/null +++ b/ui.c @@ -0,0 +1,211 @@ +/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#define _XOPEN_SOURCE_EXTENDED + +#include <curses.h> +#include <err.h> +#include <locale.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <wchar.h> +#include <wctype.h> + +#include "chat.h" + +static const int TOPIC_COLS = 512; +static const int CHAT_LINES = 100; +static const int INPUT_COLS = 512; + +static struct { + WINDOW *topic; + WINDOW *chat; + WINDOW *input; +} ui; + +void uiInit(void) { + setlocale(LC_CTYPE, ""); + initscr(); + cbreak(); + noecho(); + keypad(stdscr, true); + + start_color(); + use_default_colors(); + for (short pair = 0; pair < 077; ++pair) { + if (pair < 010) { + init_pair(1 + pair, pair, -1); + } else { + init_pair(1 + pair, pair & 007, (pair & 070) >> 3); + } + } + + ui.topic = newpad(2, TOPIC_COLS); + mvwhline(ui.topic, 1, 0, ACS_HLINE, TOPIC_COLS); + + ui.chat = newpad(CHAT_LINES, COLS); + wsetscrreg(ui.chat, 0, CHAT_LINES - 1); + scrollok(ui.chat, true); + wmove(ui.chat, CHAT_LINES - (LINES - 4) - 1, 0); + + ui.input = newpad(2, INPUT_COLS); + mvwhline(ui.input, 0, 0, ACS_HLINE, INPUT_COLS); + wmove(ui.input, 1, 0); +} + +void uiHide(void) { + endwin(); +} + +void uiDraw(void) { + pnoutrefresh(ui.topic, 0, 0, 0, 0, 1, COLS - 1); + pnoutrefresh( + ui.chat, + CHAT_LINES - (LINES - 4), 0, + 2, 0, LINES - 1, COLS - 1 + ); + pnoutrefresh( + ui.input, + 0, 0, + LINES - 2, 0, + LINES - 1, COLS - 1 + ); + doupdate(); +} + +static const struct { + attr_t attr; + short color; +} MIRC_COLORS[16] = { + { A_BOLD, COLOR_WHITE }, // white + { A_NORMAL, COLOR_BLACK }, // black + { A_NORMAL, COLOR_BLUE }, // blue + { A_NORMAL, COLOR_GREEN }, // green + { A_BOLD, COLOR_RED }, // red + { A_NORMAL, COLOR_RED }, // "brown" + { A_NORMAL, COLOR_MAGENTA }, // magenta + { A_NORMAL, COLOR_YELLOW }, // "orange" + { A_BOLD, COLOR_YELLOW }, // yellow + { A_BOLD, COLOR_GREEN }, // light green + { A_NORMAL, COLOR_CYAN }, // cyan + { A_BOLD, COLOR_CYAN }, // light cyan + { A_BOLD, COLOR_BLUE }, // light blue + { A_BOLD, COLOR_MAGENTA }, // "pink" + { A_BOLD, COLOR_BLACK }, // grey + { A_NORMAL, COLOR_WHITE }, // light grey +}; + +static void uiAdd(WINDOW *win, const char *str) { + attr_t attr = A_NORMAL; + short colorPair = -1; + attr_t colorAttr = A_NORMAL; + for (;;) { + size_t cc = strcspn(str, "\2\3\35\37"); + wattr_set(win, attr | colorAttr, 1 + colorPair, NULL); + waddnstr(win, str, cc); + if (!str[cc]) break; + + str = &str[cc]; + switch (*str++) { + break; case '\2': attr ^= A_BOLD; + break; case '\35': attr ^= A_ITALIC; + break; case '\37': attr ^= A_UNDERLINE; + break; case '\3': { + short fg = 0; + short bg = 0; + + size_t fgLen = strspn(str, "0123456789"); + if (!fgLen) { + colorPair = -1; + colorAttr = A_NORMAL; + break; + } + + if (fgLen > 2) fgLen = 2; + for (size_t i = 0; i < fgLen; ++i) { + fg *= 10; + fg += str[i] - '0'; + } + str = &str[fgLen]; + + size_t bgLen = (str[0] == ',') ? strspn(&str[1], "0123456789") : 0; + if (bgLen > 2) bgLen = 2; + for (size_t i = 0; i < bgLen; ++i) { + bg *= 10; + bg += str[1 + i] - '0'; + } + if (bgLen) str = &str[1 + bgLen]; + + if (colorPair == -1) colorPair = 0; + colorPair = (colorPair & 070) | MIRC_COLORS[fg].color; + colorAttr = MIRC_COLORS[fg].attr; + if (bgLen) { + colorPair = (colorPair & 007) | (MIRC_COLORS[bg].color << 3); + } + } + } + } +} + +void uiTopic(const char *topic) { + wmove(ui.topic, 0, 0); + wclrtoeol(ui.topic); + uiAdd(ui.topic, topic); +} + +void uiChat(const char *line) { + waddch(ui.chat, '\n'); + uiAdd(ui.chat, line); +} + +void uiFmt(const char *format, ...) { + char *buf; + va_list ap; + va_start(ap, format); + vasprintf(&buf, format, ap); + va_end(ap); + if (!buf) err(EX_OSERR, "vasprintf"); + uiChat(buf); + free(buf); +} + +void uiRead(void) { + static wchar_t buf[512]; + static size_t len; + + wint_t ch; + wget_wch(ui.input, &ch); + switch (ch) { + break; case '\b': case '\177': { + if (len) len--; + } + break; case '\n': { + if (!len) break; + buf[len] = '\0'; + input(buf); + len = 0; + } + break; default: { + if (iswprint(ch)) buf[len++] = ch; + } + } + wmove(ui.input, 1, 0); + waddnwstr(ui.input, buf, len); + wclrtoeol(ui.input); +} |