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different implementation of the favicon dot

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* moved all the code into its own file
* made all the attributes "lazy" (i.e. initialise on first use)

the dot on the icon now follows the dot/number on the "bell" button
This commit is contained in:
dakkar 2024-03-20 14:05:32 +00:00
parent 459e684117
commit a7159b41bf
2 changed files with 114 additions and 71 deletions
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107
packages/frontend/src/scripts/icon-dot.ts Normal file
View file

@ -0,0 +1,107 @@
class FavIconDot {
_canvas : HTMLCanvasElement;
private canvas() {
if (!this._canvas) {
this._canvas = document.createElement('canvas');
}
return this._canvas;
}
_ctx : CanvasRenderingContext2D | null = null;
private ctx() {
if (!this._ctx) {
this._ctx = this.canvas().getContext('2d');
}
return this._ctx;
}
_favIconEl : HTMLLinkElement;
private favIconEl() {
if (!this._favIconEl) {
this._favIconEl = document.querySelector<HTMLLinkElement>('link[rel$=icon]') ?? this._createFaviconElem();
}
return this._favIconEl;
}
_favIconImage : HTMLImageElement | null = null;
private favIconImage() {
if (!this._favIconImage) {
const canvas = this.canvas();
const image = document.createElement('img');
this._hasLoaded = new Promise((resolve) => {
image.onload = () => {
canvas.width = image.width;
canvas.height = image.height;
resolve();
};
});
image.src = this.favIconEl().href;
this._favIconImage = image;
}
return this._favIconImage;
}
_hasLoaded : Promise;
private hasLoaded() {
if (!this._hasLoaded) {
this.favIconImage();
}
return this._hasLoaded;
}
private _createFaviconElem() {
const newLink = document.createElement('link');
newLink.rel = 'icon';
newLink.href = '/favicon.ico';
document.head.appendChild(newLink);
return newLink;
}
private _drawIcon() {
const ctx = this.ctx();
const favIconImage = this.favIconImage();
const canvas = this.canvas();
if (!ctx || !favIconImage) return;
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.drawImage(favIconImage, 0, 0, favIconImage.width, favIconImage.height);
}
private _drawDot() {
const ctx = this.ctx();
const favIconImage = this.favIconImage();
if (!ctx || !favIconImage) return;
ctx.beginPath();
ctx.arc(favIconImage.width - 10, 10, 10, 0, 2 * Math.PI);
ctx.fillStyle = getComputedStyle(document.documentElement).getPropertyValue('--navIndicator');
ctx.strokeStyle = 'white';
ctx.fill();
ctx.stroke();
}
private _setFavicon() {
this.favIconEl().href = this.canvas().toDataURL('image/png');
}
async setVisible(isVisible : boolean) {
await this.hasLoaded();
this._drawIcon();
if (isVisible) this._drawDot();
this._setFavicon();
}
}
let icon: FavIconDot;
export function setFavIconDot(visible: boolean) {
if (!icon) {
icon = new FavIconDot();
}
icon.setVisible(visible);
}

78
packages/frontend/src/ui/_common_/common.vue
View file

@ -60,6 +60,7 @@ import { useStream } from '@/stream.js';
import { i18n } from '@/i18n.js';
import { defaultStore } from '@/store.js';
import { globalEvents } from '@/events.js';
import { setFavIconDot } from '@/scripts/icon-dot.js';
const SkOneko = defineAsyncComponent(() => import('@/components/SkOneko.vue'));
@ -70,74 +71,6 @@ const dev = _DEV_;
const notifications = ref<Misskey.entities.Notification[]>([]);
class NotificationFavIconDot {
canvas : HTMLCanvasElement;
src : string | null = null;
ctx : CanvasRenderingContext2D | null = null;
favconImage : HTMLImageElement | null = null;
faviconEL : HTMLLinkElement;
hasLoaded : Promise;
constructor() {
this.canvas = document.createElement('canvas');
this.faviconEL = document.querySelector<HTMLLinkElement>('link[rel$=icon]') ?? this._createFaviconElem();
this.src = this.faviconEL.getAttribute('href');
this.ctx = this.canvas.getContext('2d');
this.favconImage = document.createElement('img');
this.favconImage.src = this.faviconEL.href;
this.hasLoaded = new Promise((resolve, reject) => {
this.favconImage.onload = () => {
this.canvas.width = this.favconImage.width;
this.canvas.height = this.favconImage.height;
// resolve();
setTimeout(() => resolve(), 500);
};
});
}
private _createFaviconElem() {
const newLink = document.createElement('link');
newLink.rel = 'icon';
newLink.href = '/favicon.ico';
document.head.appendChild(newLink);
return newLink;
}
private _drawIcon() {
if (!this.ctx || !this.favconImage) return;
this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
this.ctx.drawImage(this.favconImage, 0, 0, this.favconImage.width, this.favconImage.height);
}
private _drawDot() {
if (!this.ctx || !this.favconImage) return;
this.ctx.beginPath();
this.ctx.arc(this.favconImage.width - 10, 10, 10, 0, 2 * Math.PI);
this.ctx.fillStyle = getComputedStyle(document.documentElement).getPropertyValue('--navIndicator');
this.ctx.strokeStyle = 'white';
this.ctx.fill();
this.ctx.stroke();
}
private _setFavicon() {
this.faviconEL.href = this.canvas.toDataURL('image/png');
}
async setVisible(isVisible : boolean) {
//Wait for it to have loaded the icon
await this.hasLoaded;
console.log(this.hasLoaded);
this._drawIcon();
if (isVisible) this._drawDot();
this._setFavicon();
}
}
const notificationDot = new NotificationFavIconDot();
function onNotification(notification: Misskey.entities.Notification, isClient = false) {
if (document.visibilityState === 'visible') {
if (!isClient && notification.type !== 'test') {
@ -162,10 +95,13 @@ if ($i) {
const connection = useStream().useChannel('main', null, 'UI');
connection.on('notification', onNotification);
watch(() => $i?.hasUnreadNotification, (hasAny) => notificationDot.setVisible((defaultStore.state.enableFaviconNotificationDot ? hasAny : false) ?? false));
watch(
() => $i != null && $i.hasUnreadNotification,
() => setFavIconDot(defaultStore.state.enableFaviconNotificationDot ? $i.hasUnreadNotification : false ),
);
if ($i.hasUnreadNotification && defaultStore.state.enableFaviconNotificationDot) setFavIconDot(true);
if ($i.hasUnreadNotification && defaultStore.state.enableFaviconNotificationDot) notificationDot.setVisible(true);
globalEvents.on('clientNotification', notification => onNotification(notification, true));
//#region Listen message from SW