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/* 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);
}
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