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/* Compute the total duration of the run. */
function compute()
{
const fps = parseInt(document.getElementById("framerate").value);
const st = document.getElementById("startobj").value;
const et = document.getElementById("endobj").value;
/* Return early if not all fields are filled */
if (st === undefined || et === undefined || fps === undefined)
return;
/* Return early on a negative time */
const frames = (et - st) * fps;
if (frames < 0) {
document.getElementById("time").value = "Error: Negative time";
return;
}
const s = Math.round(frames / fps * 1000) / 1000;
/* Show the time and mod message in the DOM. */
const sf = Math.trunc(st * fps);
const ef = Math.trunc(et * fps);
const t = time_format(s);
const mod_message = `Mod Note: Retimed (Start Frame: ${sf}, End Frame: ${ef}, FPS: ${
fps}, Total Time: ${t})`;
document.getElementById("time").value = t;
document.getElementById("mod_message").disabled = false;
document.getElementById("mod_message").innerText = mod_message;
document.getElementById("mod_message_button").disabled = false;
}
/* Convert seconds to human readable time. */
function time_format(t)
{
const h = ~~(t / 3600);
const m = ~~((t % 3600) / 60);
const s = t % 60;
let ret = "";
if (h > 0)
ret += h + ":" + (m < 10 ? "0" : "");
ret += m + ":" + (s < 10 ? "0" : "") + s.toFixed(3);
return ret;
}
/* Allow user to copy mod message to clipboard. */
function copy_mod_message()
{
const text_area = document.getElementById("mod_message");
text_area.focus();
text_area.select();
document.execCommand("copy");
}
/* If framerate is invalid, show an error message and disable start and end frame fields. */
function check_fps(event)
{
fps = event.target.value;
if (fps > 0 && fps % 1 == 0) {
document.getElementById("startobj").disabled = false;
document.getElementById("endobj").disabled = false;
}
else {
document.getElementById("framerate")
.setCustomValidity("Please enter a valid framerate.");
document.getElementById("framerate").reportValidity();
document.getElementById("startobj").disabled = true;
document.getElementById("endobj").disabled = true;
}
}
/* Get current frame from input field (either start time or end time). */
function parse_time(event)
{
/* Return early if invalid JSON is passed (numbers are valid) */
let inp, dinfo;
try {
dinfo = JSON.parse(event.target.value);
} catch {
document.getElementById(event.target.id).value = "";
return;
}
/* If cmt isn't available fallback to lct, also allow raw numbers */
if (!(inp = dinfo.cmt) && !(inp = dinfo.lct) && typeof ((inp = dinfo)) !== "number") {
document.getElementById(event.target.id).value = "";
return;
}
/* Calculate the exact timestamp */
const fps = parseInt(document.getElementById("framerate").value);
const frame = Math.floor(inp * fps) / fps;
document.getElementById(event.target.id).value = `${frame}`;
/* If all fields are filled the compute */
if (document.getElementById("startobj").value && document.getElementById("endobj").value)
compute();
}
/* Change the users preferred theme. */
function change_theme()
{
const theme_switch = document.getElementById("page_theme");
const want = theme_switch.checked ? "dark" : "light";
document.documentElement.setAttribute("theme", want);
localStorage.setItem("theme", want);
}
/* Automatically select the users preferred theme */
const theme = localStorage.getItem("theme");
document.documentElement.setAttribute("theme", theme);
document.getElementById("page_theme").checked = (theme == "dark");
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