nixos/modules/home/ags/app/widget/Clock.tsx

52 lines
1.7 KiB
TypeScript

import GLib from "gi://GLib"
import Pango from "gi://Pango"
import Gtk from "gi://Gtk?version=3.0"
import { Variable, bind } from "astal"
const time = Variable("").poll(1000, () => {
const now = GLib.DateTime.new_now_local()
const clock = now.format("%I:%M %p")!.replace(/^0/, "")
return `${now.format("%a, %d %b")}, ${clock}`
})
// widest possible tick: days 1-7 always cover every weekday, sampled across
// all months with a double-digit hour in both meridiems; measured once at
// realize with the label's own font (tnum forced on) so the fixed
// widthRequest stops the bar from shifting every minute
function widestTick(self: Gtk.Label): number {
const layout = self.create_pango_layout("")
const attrs = new Pango.AttrList()
attrs.insert(Pango.attr_font_features_new("tnum"))
layout.set_attributes(attrs)
let widest = 0
for (let month = 1; month <= 12; month++) {
for (let day = 1; day <= 7; day++) {
for (const hour of [10, 22]) {
const d = GLib.DateTime.new_local(2026, month, day, hour, 0, 0)
const tick =
`${d.format("%a, %d %b")}, ${d.format("%I:%M %p")!.replace(/^0/, "")}`
layout.set_text(tick, -1)
const [w] = layout.get_pixel_size()
widest = Math.max(widest, w)
}
}
}
return Math.ceil(widest) + 2
}
export default function Clock() {
return (
<box spacing={6}>
<icon icon="clock-hands-symbolic" />
<label
className="clock"
label={bind(time)}
onRealize={(self) => {
self.width_request = widestTick(self as Gtk.Label)
}}
/>
</box>
)
}