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use fmt;
use tb = termbox2;
fn paint_cell(x: size, y: size, c: tb::uattr) void =
tb::set_cell(x: int, y: int, ' ', tb::COLOR.DEFAULT, c)!;
fn show_colors(wmin: size, hmin: size, wmax: size, hmax: size) void = {
tb::set_output_mode(tb::OUTPUT.TRUECOLOR)!;
tb::print(wmin: int, hmin: int, tb::COLOR.DEFAULT, tb::COLOR.DEFAULT,
"Color palette sample:")!;
hmin = hmin + 1;
let nsamples = (wmax - wmin +1) * (hmax - hmin + 1);
let step = 0xffffff / nsamples;
for (let y = hmin; y < hmax; y += 1) {
for (let x = wmin; x < wmax; x += 1) {
let c: tb::uattr = ((y - hmin) * wmax + (x - wmin)) * step;
paint_cell(x, y, c);
};
};
};
export fn main() int = {
let e = tb::init();
if (e is tb::err)
fmt::fatalf(tb::strerror(e as tb::err));
defer tb::shutdown()!;
let w = tb::width()!;
let h = tb::height()!;
tb::print(0, (h - 1): int, tb::COLOR.DEFAULT, tb::COLOR.DEFAULT,
"Press any key to exit")!;
switch (tb::OPT_ATTR_W) {
case 64 => show_colors(0, 0, w, h-1);
case => tb::print(0, ((h+1)/2): int, tb::COLOR.DEFAULT, tb::COLOR.DEFAULT,
"This demo is only available with truecolor support, here "
"tb::OPT_ATTR_W is {}", tb::OPT_ATTR_W)!;
};
for (true) {
let e = tb::present();
if (e is tb::err)
fmt::fatalf(tb::strerror(e as tb::err));
match (tb::poll_event()) {
case let e: tb::err => {
if (e == tb::ERR.NO_EVENT)
continue
else
tb::print(0, h:int -1,
tb::COLOR.DEFAULT, tb::COLOR.DEFAULT,
"Unexpected error {}!", tb::strerror(e))!;
};
case tb::key_event => break;
case (tb::mouse_event | tb::resize_event) => continue;
};
};
return 0;
};
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