Display the amount of notifications on Instagram Desktop similair to Discord.
// ==UserScript==
// @name Instagram Notification Displayer
// @description Display the amount of notifications on Instagram Desktop similair to Discord.
// @icon https://www.google.com/s2/favicons?sz=64&domain=instagram.com
// @author KyleRifqi
// @license MIT
// @namespace http://github.com/kylerifqi
// @match *.instagram.com/*
// @version 1.0
// @supportURL https://github.com/kylerifqi/instagram-notification-display/issues
// ==/UserScript==
(function () {
'use strict';
/**
* Add notification badge (pill) to favicon in browser tab
* @url stackoverflow.com/questions/65719387/
* MODIFIED: _drawFavicon()
*/
class Badger {
canvas;
ctx;
faviconSize;
offset;
img;
badgeSize;
backgroundColor;
color;
size;
position;
radius;
src;
_value;
constructor(options) {
this.backgroundColor = '';
this.color = '';
this.size = 0;
this.position = '';
this.radius = 0;
this.src = '';
Object.assign(this, {
backgroundColor: '#f00',
color: '#fff',
size: 0.6,
position: 'ne',
radius: 8,
src: '', // Favicon source (dafaults to the <link> icon href)
}, options);
this.canvas = document.createElement('canvas');
this.src = document.querySelector('link[rel$=icon]')?.href;
this.ctx = this.canvas.getContext('2d');
this.faviconSize = 0;
this.offset = { x: 0, y: 0 };
this.badgeSize = 0;
this._value = 0;
this.img = new Image();
this.img.addEventListener('load', () => {
this.faviconSize = this.img.naturalWidth;
this.badgeSize = this.faviconSize * this.size;
this.canvas.width = this.faviconSize;
this.canvas.height = this.faviconSize;
const sd = this.faviconSize - this.badgeSize;
const sd2 = sd / 2;
this.offset = {
n: { x: sd2, y: 0 },
e: { x: sd, y: sd2 },
s: { x: sd2, y: sd },
w: { x: 0, y: sd2 },
nw: { x: 0, y: 0 },
ne: { x: sd, y: 0 },
sw: { x: 0, y: sd },
se: { x: sd, y: sd },
}[this.position] || { x: 0, y: 0 };
this._draw();
});
this.img.src = this.src;
}
_drawIcon() {
this.ctx.clearRect(0, 0, this.faviconSize, this.faviconSize);
this.ctx.drawImage(this.img, 0, 0, this.faviconSize, this.faviconSize);
}
_drawShape() {
const r = this.radius;
const xa = this.offset.x;
const ya = this.offset.y;
const xb = this.offset.x + this.badgeSize;
const yb = this.offset.y + this.badgeSize;
this.ctx.beginPath();
this.ctx.moveTo(xb - r, ya);
this.ctx.quadraticCurveTo(xb, ya, xb, ya + r);
this.ctx.lineTo(xb, yb - r);
this.ctx.quadraticCurveTo(xb, yb, xb - r, yb);
this.ctx.lineTo(xa + r, yb);
this.ctx.quadraticCurveTo(xa, yb, xa, yb - r);
this.ctx.lineTo(xa, ya + r);
this.ctx.quadraticCurveTo(xa, ya, xa + r, ya);
this.ctx.fillStyle = this.backgroundColor;
this.ctx.fill();
this.ctx.closePath();
}
_drawVal() {
const margin = (this.badgeSize * 0.18) / 2;
this.ctx.beginPath();
this.ctx.textBaseline = 'middle';
this.ctx.textAlign = 'center';
this.ctx.font = `bold ${this.badgeSize * 0.82}px Arial`;
this.ctx.fillStyle = this.color;
this.ctx.fillText(this.value.toString(), this.badgeSize / 2 + this.offset.x, this.badgeSize / 2 + this.offset.y + margin);
this.ctx.closePath();
}
_drawFavicon() {
document.querySelectorAll('link[rel*=\'icon\']').forEach(elm => {
elm.parentElement.removeChild(elm);
});
const link = document.createElement('link');
link.type = 'image/x-icon';
link.rel = 'shortcut icon';
link.href = this.dataURL;
document.getElementsByTagName('head')[0].appendChild(link);
}
_draw() {
this._drawIcon();
if (this.value)
this._drawShape();
if (this.value)
this._drawVal();
this._drawFavicon();
}
// Public functions / methods:
update() {
this._value = Math.min(99, parseInt(this._value.toString(), 10));
this._draw();
}
get dataURL() {
return this.canvas.toDataURL();
}
get value() {
return this._value;
}
set value(val) {
this._value = val;
this.update();
}
}
const myBadger = new Badger({
size: 0.65,
position: 'se',
radius: 100,
});
const updateFavicon = () => {
const title = document.title;
const notifs = +(title.match(/\(([^)]+)\)/) ?? [0, 0])[1];
myBadger.value = notifs;
// console.log(myBadger.dataURL);
// document.querySelector('img').src = myBadger.dataURL;
};
window.addEventListener('load', updateFavicon, false);
new MutationObserver(updateFavicon).observe(document.querySelector('title'), {
subtree: true,
characterData: true,
childList: true
});
})();