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Diffstat (limited to '')
| -rw-r--r-- | ui.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/ui.c b/ui.c new file mode 100644 index 0000000..0295c8d --- /dev/null +++ b/ui.c @@ -0,0 +1,174 @@ +/* Copyright (C) 2020 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include <assert.h> +#include <curses.h> +#include <err.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <sysexits.h> +#include <time.h> + +#include "chat.h" + +#ifndef A_ITALIC +#define A_ITALIC A_UNDERLINE +#endif + +#define BOTTOM (LINES - 1) +#define RIGHT (COLS - 1) +#define WINDOW_LINES (LINES - 2) + +static short colorPairs; + +static void colorInit(void) { + start_color(); + use_default_colors(); + for (short pair = 0; pair < 16; ++pair) { + init_pair(1 + pair, pair % COLORS, -1); + } + colorPairs = 17; +} + +static attr_t colorAttr(short fg) { + return (fg >= COLORS ? A_BOLD : A_NORMAL); +} + +static short colorPair(short fg, short bg) { + if (bg == -1) return 1 + fg; + for (short pair = 17; pair < colorPairs; ++pair) { + short f, b; + pair_content(pair, &f, &b); + if (f == fg && b == bg) return pair; + } + init_pair(colorPairs, fg, bg); + return colorPairs++; +} + +enum { + InputCols = 512, + PadLines = 512, +}; + +static WINDOW *status; +static WINDOW *input; + +struct Window { + size_t id; + WINDOW *pad; + enum Heat heat; + int unread; + int scroll; + bool mark; + struct Window *prev; + struct Window *next; +}; + +static struct { + struct Window *active; + struct Window *other; + struct Window *head; + struct Window *tail; +} windows; + +static void windowAdd(struct Window *window) { + if (windows.tail) windows.tail->next = window; + window->prev = windows.tail; + window->next = NULL; + windows.tail = window; + if (!windows.head) windows.head = window; +} + +static void windowRemove(struct Window *window) { + if (window->prev) window->prev->next = window->next; + if (window->next) window->next->prev = window->prev; + if (windows.head == window) windows.head = window->next; + if (windows.tail == window) windows.tail = window->prev; +} + +static struct Window *windowFor(size_t id) { + struct Window *window; + for (window = windows.head; window; window = window->next) { + if (window->id == id) return window; + } + window = malloc(sizeof(*window)); + if (!window) err(EX_OSERR, "malloc"); + window->id = id; + window->pad = newpad(PadLines, COLS); + wsetscrreg(window->pad, 0, PadLines - 1); + scrollok(window->pad, true); + wmove(window->pad, PadLines - 1, 0); + window->heat = Cold; + window->unread = 0; + window->scroll = PadLines; + window->mark = true; + windowAdd(window); + return window; +} + +void uiInit(void) { + initscr(); + cbreak(); + noecho(); + termInit(); + termNoFlow(); + def_prog_mode(); + colorInit(); + status = newwin(1, COLS, 0, 0); + input = newpad(1, InputCols); + keypad(input, true); + nodelay(input, true); + windows.active = windowFor(Network); +} + +void uiDraw(void) { + wnoutrefresh(status); + pnoutrefresh( + windows.active->pad, + windows.active->scroll - WINDOW_LINES, 0, + 1, 0, + BOTTOM - 1, RIGHT + ); + // TODO: Input scrolling. + pnoutrefresh( + input, + 0, 0, + BOTTOM, 0, + BOTTOM, RIGHT + ); + doupdate(); +} + +void uiWrite(size_t id, enum Heat heat, const struct tm *time, const char *str) { + (void)time; + struct Window *window = windowFor(id); + waddch(window->pad, '\n'); + waddstr(window->pad, str); +} + +void uiFormat( + size_t id, enum Heat heat, const struct tm *time, const char *format, ... +) { + char buf[1024]; + va_list ap; + va_start(ap, format); + int len = vsnprintf(buf, sizeof(buf), format, ap); + va_end(ap); + assert((size_t)len < sizeof(buf)); + uiWrite(id, heat, time, buf); +} |