277 lines
6.7 KiB
C
277 lines
6.7 KiB
C
/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <curses.h>
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#include <err.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <time.h>
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#include <wchar.h>
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#include <wctype.h>
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#include "chat.h"
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#ifndef A_ITALIC
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#define A_ITALIC A_UNDERLINE
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#endif
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#define BOTTOM (LINES - 1)
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#define RIGHT (COLS - 1)
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#define WINDOW_LINES (LINES - 2)
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static short colorPairs;
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static void colorInit(void) {
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start_color();
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use_default_colors();
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for (short pair = 0; pair < 16; ++pair) {
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init_pair(1 + pair, pair % COLORS, -1);
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}
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colorPairs = 17;
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}
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static attr_t colorAttr(short fg) {
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return (fg >= COLORS ? A_BOLD : A_NORMAL);
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}
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static short colorPair(short fg, short bg) {
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if (bg == -1) return 1 + fg;
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for (short pair = 17; pair < colorPairs; ++pair) {
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short f, b;
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pair_content(pair, &f, &b);
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if (f == fg && b == bg) return pair;
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}
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init_pair(colorPairs, fg % COLORS, bg % COLORS);
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return colorPairs++;
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}
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enum {
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InputCols = 512,
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PadLines = 512,
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};
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static WINDOW *status;
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static WINDOW *input;
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struct Window {
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size_t id;
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WINDOW *pad;
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enum Heat heat;
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int unread;
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int scroll;
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bool mark;
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struct Window *prev;
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struct Window *next;
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};
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static struct {
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struct Window *active;
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struct Window *other;
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struct Window *head;
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struct Window *tail;
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} windows;
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static void windowAdd(struct Window *window) {
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if (windows.tail) windows.tail->next = window;
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window->prev = windows.tail;
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window->next = NULL;
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windows.tail = window;
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if (!windows.head) windows.head = window;
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}
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static void windowRemove(struct Window *window) {
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if (window->prev) window->prev->next = window->next;
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if (window->next) window->next->prev = window->prev;
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if (windows.head == window) windows.head = window->next;
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if (windows.tail == window) windows.tail = window->prev;
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}
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static struct Window *windowFor(size_t id) {
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struct Window *window;
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for (window = windows.head; window; window = window->next) {
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if (window->id == id) return window;
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}
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window = malloc(sizeof(*window));
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if (!window) err(EX_OSERR, "malloc");
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window->id = id;
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window->pad = newpad(PadLines, COLS);
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scrollok(window->pad, true);
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wmove(window->pad, PadLines - 1, 0);
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window->heat = Cold;
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window->unread = 0;
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window->scroll = PadLines;
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window->mark = true;
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windowAdd(window);
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return window;
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}
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void uiInit(void) {
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initscr();
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cbreak();
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noecho();
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termInit();
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termNoFlow();
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def_prog_mode();
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colorInit();
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status = newwin(1, COLS, 0, 0);
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input = newpad(1, InputCols);
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keypad(input, true);
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nodelay(input, true);
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windows.active = windowFor(Network);
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}
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void uiDraw(void) {
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wnoutrefresh(status);
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pnoutrefresh(
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windows.active->pad,
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windows.active->scroll - WINDOW_LINES, 0,
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1, 0,
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BOTTOM - 1, RIGHT
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);
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// TODO: Input scrolling.
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pnoutrefresh(
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input,
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0, 0,
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BOTTOM, 0,
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BOTTOM, RIGHT
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);
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doupdate();
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}
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struct Style {
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attr_t attr;
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enum Color fg, bg;
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};
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static const struct Style Reset = { A_NORMAL, Default, Default };
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static short mapColor(enum Color color) {
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switch (color) {
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break; case White: return 8 + COLOR_WHITE;
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break; case Black: return 0 + COLOR_BLACK;
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break; case Blue: return 0 + COLOR_BLUE;
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break; case Green: return 0 + COLOR_GREEN;
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break; case Red: return 8 + COLOR_RED;
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break; case Brown: return 0 + COLOR_RED;
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break; case Magenta: return 0 + COLOR_MAGENTA;
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break; case Orange: return 0 + COLOR_YELLOW;
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break; case Yellow: return 8 + COLOR_YELLOW;
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break; case LightGreen: return 8 + COLOR_GREEN;
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break; case Cyan: return 0 + COLOR_CYAN;
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break; case LightCyan: return 8 + COLOR_CYAN;
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break; case LightBlue: return 8 + COLOR_BLUE;
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break; case Pink: return 8 + COLOR_MAGENTA;
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break; case Gray: return 8 + COLOR_BLACK;
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break; case LightGray: return 0 + COLOR_WHITE;
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break; default: return -1;
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}
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}
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static void styleParse(struct Style *style, const char **str, size_t *len) {
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switch (**str) {
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break; case '\2': (*str)++; style->attr ^= A_BOLD;
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break; case '\17': (*str)++; *style = Reset;
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break; case '\26': (*str)++; style->attr ^= A_REVERSE;
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break; case '\35': (*str)++; style->attr ^= A_ITALIC;
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break; case '\37': (*str)++; style->attr ^= A_UNDERLINE;
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break; case '\3': {
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(*str)++;
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if (!isdigit(**str)) {
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style->fg = Default;
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style->bg = Default;
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break;
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}
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style->fg = *(*str)++ - '0';
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if (isdigit(**str)) style->fg = style->fg * 10 + *(*str)++ - '0';
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if ((*str)[0] != ',' || !isdigit((*str)[1])) break;
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(*str)++;
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style->bg = *(*str)++ - '0';
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if (isdigit(**str)) style->bg = style->bg * 10 + *(*str)++ - '0';
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}
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}
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*len = strcspn(*str, "\2\3\17\26\35\37");
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}
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static int wordWidth(const char *str) {
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size_t len = strcspn(str, " ");
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int width = 0;
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while (len) {
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wchar_t wc;
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int n = mbtowc(&wc, str, len);
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if (n < 1) return width + len;
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width += (iswprint(wc) ? wcwidth(wc) : 0);
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str += n;
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len -= n;
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}
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return width;
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}
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static void styleAdd(WINDOW *win, const char *str) {
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int y, x, width;
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getmaxyx(win, y, width);
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size_t len;
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struct Style style = Reset;
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while (*str) {
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if (*str == ' ') {
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getyx(win, y, x);
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const char *word = &str[strspn(str, " ")];
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if (width - x - 1 <= wordWidth(word)) {
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waddch(win, '\n');
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str = word;
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}
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}
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styleParse(&style, &str, &len);
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size_t sp = strspn(str, " ");
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sp += strcspn(&str[sp], " ");
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if (sp < len) len = sp;
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wattr_set(
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win,
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style.attr | colorAttr(mapColor(style.fg)),
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colorPair(mapColor(style.fg), mapColor(style.bg)),
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NULL
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);
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waddnstr(win, str, len);
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str += len;
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}
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}
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void uiWrite(size_t id, enum Heat heat, const struct tm *time, const char *str) {
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(void)time;
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struct Window *window = windowFor(id);
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waddch(window->pad, '\n');
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styleAdd(window->pad, str);
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}
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void uiFormat(
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size_t id, enum Heat heat, const struct tm *time, const char *format, ...
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) {
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char buf[1024];
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va_list ap;
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va_start(ap, format);
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int len = vsnprintf(buf, sizeof(buf), format, ap);
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va_end(ap);
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assert((size_t)len < sizeof(buf));
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uiWrite(id, heat, time, buf);
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}
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