129 lines
3.9 KiB
TypeScript
129 lines
3.9 KiB
TypeScript
import { Component, Input, OnChanges, OnInit } from "@angular/core";
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import { DomSanitizer, SafeResourceUrl } from "@angular/platform-browser";
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import { Utils } from "@bitwarden/common/misc/utils";
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@Component({
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selector: "app-avatar",
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template: `<img
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*ngIf="src"
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[src]="src"
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title="{{ data }}"
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[ngClass]="{ 'rounded-circle': circle }"
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/>`,
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})
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export class AvatarComponent implements OnChanges, OnInit {
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@Input() size = 45;
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@Input() charCount = 2;
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@Input() fontSize = 20;
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@Input() dynamic = false;
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@Input() circle = false;
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@Input() color?: string;
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@Input() id?: number;
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@Input() text?: string;
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private svgCharCount = 2;
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private svgFontWeight = 300;
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src: SafeResourceUrl;
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constructor(public sanitizer: DomSanitizer) {}
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ngOnInit() {
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if (!this.dynamic) {
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this.generate();
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}
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}
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ngOnChanges() {
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if (this.dynamic) {
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this.generate();
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}
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}
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private async generate() {
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let chars: string = null;
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const upperCaseText = this.text?.toUpperCase() ?? "";
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chars = this.getFirstLetters(upperCaseText, this.svgCharCount);
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if (chars == null) {
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chars = this.unicodeSafeSubstring(upperCaseText, this.svgCharCount);
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}
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// If the chars contain an emoji, only show it.
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if (chars.match(Utils.regexpEmojiPresentation)) {
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chars = chars.match(Utils.regexpEmojiPresentation)[0];
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}
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let svg: HTMLElement;
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let hexColor = this.color;
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if (this.color != null) {
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svg = this.createSvgElement(this.size, hexColor);
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} else if (this.id != null) {
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hexColor = Utils.stringToColor(this.id.toString());
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svg = this.createSvgElement(this.size, hexColor);
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} else {
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hexColor = Utils.stringToColor(upperCaseText);
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svg = this.createSvgElement(this.size, hexColor);
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}
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const charObj = this.createTextElement(chars, hexColor);
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svg.appendChild(charObj);
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const html = window.document.createElement("div").appendChild(svg).outerHTML;
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const svgHtml = window.btoa(unescape(encodeURIComponent(html)));
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this.src = this.sanitizer.bypassSecurityTrustResourceUrl(
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"data:image/svg+xml;base64," + svgHtml
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);
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}
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private getFirstLetters(data: string, count: number): string {
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const parts = data.split(" ");
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if (parts.length > 1) {
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let text = "";
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for (let i = 0; i < count; i++) {
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text += this.unicodeSafeSubstring(parts[i], 1);
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}
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return text;
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}
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return null;
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}
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private createSvgElement(size: number, color: string): HTMLElement {
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const svgTag = window.document.createElement("svg");
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svgTag.setAttribute("xmlns", "http://www.w3.org/2000/svg");
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svgTag.setAttribute("pointer-events", "none");
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svgTag.setAttribute("width", size.toString());
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svgTag.setAttribute("height", size.toString());
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svgTag.style.backgroundColor = color;
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svgTag.style.width = size + "px";
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svgTag.style.height = size + "px";
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return svgTag;
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}
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private createTextElement(character: string, color: string): HTMLElement {
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const textTag = window.document.createElement("text");
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textTag.setAttribute("text-anchor", "middle");
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textTag.setAttribute("y", "50%");
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textTag.setAttribute("x", "50%");
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textTag.setAttribute("dy", "0.35em");
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textTag.setAttribute("pointer-events", "auto");
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textTag.setAttribute("fill", Utils.pickTextColorBasedOnBgColor(color, 135, true));
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textTag.setAttribute(
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"font-family",
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'"Open Sans","Helvetica Neue",Helvetica,Arial,' +
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'sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol"'
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);
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textTag.textContent = character;
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textTag.style.fontWeight = this.svgFontWeight.toString();
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textTag.style.fontSize = this.fontSize + "px";
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return textTag;
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}
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private unicodeSafeSubstring(str: string, count: number) {
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const characters = str.match(/./gu);
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return characters != null ? characters.slice(0, count).join("") : "";
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}
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}
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