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source.js
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source.js
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/* await DOM to be ready... */
$(document).ready(() => {
/* grab the elements in the DOM fragment */
const elGFCSS = $("#gfcss").get(0)
const el = $(".banner").get(0)
const elDoor = $(".door", el).get(0)
const elBar = $(".door .bar", el).get(0)
const elContent = $(".content", el).get(0)
/* fixed animation times */
const timeAnimation1 = 250
const timeAnimation2 = 1500
/* positioning configuration */
let xd, yd, x, y, w, h, sw, sh
/* update configuration */
const reconfigure = (cfg) => {
/* take over configuration */
x = cfg.x; y = cfg.y; w = cfg.w; h = cfg.h
/* position DOM fragment */
if (x > 0) {
$(el).css("left", `${x}px`)
$(el).prop("style").removeProperty("right")
xd = "l"
}
else {
$(el).prop("style").removeProperty("left")
$(el).css("right", `${-x}px`)
xd = "r"
}
if (y > 0) {
$(el).css("top", `${y}px`)
$(el).prop("style").removeProperty("bottom")
yd = "t"
}
else {
$(el).prop("style").removeProperty("top")
$(el).css("bottom", `${-y}px`)
yd = "b"
}
/* determine width/height */
sw = 6 + 15 + w + 15
sh = 6 + h + 6
/* update font reference */
$(elGFCSS).attr("href", `https://fonts.googleapis.com/css?family=${cfg.fontf.replace(/\s+/g, "+")}`)
/* update fragment content */
$(elContent).html(cfg.text)
/* style DOM fragment */
$(el)
.css("width", `${sw}px`)
.css("height", `${sh}px`)
.removeClass("banner-l")
.removeClass("banner-r")
.addClass(`banner-${xd}`)
$(elContent)
.css("width", `${15 + w + 15}px`)
.css("height", `${sh}px`)
.css("background", `linear-gradient(180deg, #${cfg.colbox1}, #${cfg.colbox2})`)
.css("color", `#${cfg.coltxt1}`)
.css("font-family", `${cfg.fontf}`)
.css("font-size", `${cfg.fonts}`)
.css("font-weight", `${cfg.fontw}`)
$("em", elContent)
.css("color", `#${cfg.coltxt2}`)
$(elDoor)
.css("height", `${sh}px`)
$(elBar)
.css("height", `${sh}px`)
.css("background", `linear-gradient(180deg, #${cfg.colbar1}, #${cfg.colbar2})`)
}
/* show banner */
const show = (quick = false) => {
if (quick) {
/* show quickly (no animation at all) */
$(elBar).css("top", 0)
$(elContent).css("left", 0)
return
}
/* initialize animation positions */
$(elBar).css("top", yd === "t" ? -sh : sh)
$(elContent).css("left", xd === "l" ? -sw : sw)
/* create animation timeline */
const tl = anime.timeline({
autoplay: true,
direction: "normal"
})
/* coming: bar */
tl.add({
targets: elBar,
duration: timeAnimation1,
easing: "easeOutSine",
...(yd === "t" ? { top: [ -sh, 0 ] } : { top: [ sh, 0 ] })
})
/* coming: content */
tl.add({
targets: elContent,
duration: timeAnimation2,
easing: "easeOutSine",
...(xd === "l" ? { left: [ -sw, 0 ] } : { left: [ sw, 0 ] })
})
}
/* hide banner */
const hide = (quick = false) => {
if (quick) {
/* hide quickly (no animation at all) */
$(elBar).css("top", yd === "t" ? -sh : sh)
$(elContent).css("left", xd === "l" ? -sw : sw)
return
}
/* initialize animation positions */
$(elBar).css("top", yd === "t" ? sh : -sh)
$(elContent).css("left", xd === "l" ? sw : -sw)
/* create animation timeline */
const tl = anime.timeline({
autoplay: true,
direction: "normal"
})
/* going: content */
tl.add({
targets: elContent,
duration: timeAnimation2,
easing: "easeInSine",
...(xd === "l" ? { left: [ 0, -sw ] } : { left: [ 0, sw ] })
})
/* going: bar */
tl.add({
targets: elBar,
duration: timeAnimation1,
easing: "easeInSine",
...(yd === "t" ? { top: [ 0, -sh ] } : { top: [ 0, sh ] })
})
}
/* user keyboard interaction */
let active = false
window.addEventListener("keyup", (ev) => {
if (ev.key === "a") {
/* toggle banner (show or hide) */
active = !active
if (active)
show()
else
hide()
}
})
/* establish channels to control */
const bcs = new BroadcastChannel("obs-banner-source")
const bcc = new BroadcastChannel("obs-banner-control")
/* receive control command */
bcs.addEventListener("message", (ev) => {
if (typeof ev.data === "object") {
if (ev.data.command === "configure") {
/* reconfigure ourself */
reconfigure(ev.data.data)
if (active)
show(true)
else
hide(true)
}
else if (ev.data.command === "toggle") {
/* toggle banner (show or hide) */
active = !active
if (active)
show()
else
hide()
}
}
})
/* initialize our configuration at least once */
reconfigure({
text: "",
x: 100, y: 100,
w: 400, h: 100,
colbar1: "ff3333", colbar2: "cc0000",
colbox1: "ffffffc0", colbox2: "f8f8f8c0",
coltxt1: "000000", coltxt2: "cc0000",
fonts: "12pt", fontw: "normal",
fontf: "Source Sans Pro:normal,italic,bold,bolditalic"
})
hide(true)
/* poll control once to be updated with real configuration */
bcc.postMessage({ command: "poll" })
})