[SM-251] Migrate to new avatar component (#3600)

apps/desktop/src/app/components/avatar.component.ts

@@ -0,0 +1,128 @@
+import { Component, Input, OnChanges, OnInit } from "@angular/core";
+import { DomSanitizer, SafeResourceUrl } from "@angular/platform-browser";
+
+import { Utils } from "@bitwarden/common/misc/utils";
+
+@Component({
+  selector: "app-avatar",
+  template: `<img
+    *ngIf="src"
+    [src]="src"
+    title="{{ data }}"
+    [ngClass]="{ 'rounded-circle': circle }"
+  />`,
+})
+export class AvatarComponent implements OnChanges, OnInit {
+  @Input() size = 45;
+  @Input() charCount = 2;
+  @Input() fontSize = 20;
+  @Input() dynamic = false;
+  @Input() circle = false;
+
+  @Input() color?: string;
+  @Input() id?: number;
+  @Input() text?: string;
+
+  private svgCharCount = 2;
+  private svgFontWeight = 300;
+  src: SafeResourceUrl;
+
+  constructor(public sanitizer: DomSanitizer) {}
+
+  ngOnInit() {
+    if (!this.dynamic) {
+      this.generate();
+    }
+  }
+
+  ngOnChanges() {
+    if (this.dynamic) {
+      this.generate();
+    }
+  }
+
+  private async generate() {
+    let chars: string = null;
+    const upperCaseText = this.text?.toUpperCase() ?? "";
+
+    chars = this.getFirstLetters(upperCaseText, this.svgCharCount);
+
+    if (chars == null) {
+      chars = this.unicodeSafeSubstring(upperCaseText, this.svgCharCount);
+    }
+
+    // If the chars contain an emoji, only show it.
+    if (chars.match(Utils.regexpEmojiPresentation)) {
+      chars = chars.match(Utils.regexpEmojiPresentation)[0];
+    }
+
+    let svg: HTMLElement;
+    let hexColor = this.color;
+
+    if (this.color != null) {
+      svg = this.createSvgElement(this.size, hexColor);
+    } else if (this.id != null) {
+      hexColor = Utils.stringToColor(this.id.toString());
+      svg = this.createSvgElement(this.size, hexColor);
+    } else {
+      hexColor = Utils.stringToColor(upperCaseText);
+      svg = this.createSvgElement(this.size, hexColor);
+    }
+
+    const charObj = this.createTextElement(chars, hexColor);
+    svg.appendChild(charObj);
+    const html = window.document.createElement("div").appendChild(svg).outerHTML;
+    const svgHtml = window.btoa(unescape(encodeURIComponent(html)));
+    this.src = this.sanitizer.bypassSecurityTrustResourceUrl(
+      "data:image/svg+xml;base64," + svgHtml
+    );
+  }
+
+  private getFirstLetters(data: string, count: number): string {
+    const parts = data.split(" ");
+    if (parts.length > 1) {
+      let text = "";
+      for (let i = 0; i < count; i++) {
+        text += this.unicodeSafeSubstring(parts[i], 1);
+      }
+      return text;
+    }
+    return null;
+  }
+
+  private createSvgElement(size: number, color: string): HTMLElement {
+    const svgTag = window.document.createElement("svg");
+    svgTag.setAttribute("xmlns", "http://www.w3.org/2000/svg");
+    svgTag.setAttribute("pointer-events", "none");
+    svgTag.setAttribute("width", size.toString());
+    svgTag.setAttribute("height", size.toString());
+    svgTag.style.backgroundColor = color;
+    svgTag.style.width = size + "px";
+    svgTag.style.height = size + "px";
+    return svgTag;
+  }
+
+  private createTextElement(character: string, color: string): HTMLElement {
+    const textTag = window.document.createElement("text");
+    textTag.setAttribute("text-anchor", "middle");
+    textTag.setAttribute("y", "50%");
+    textTag.setAttribute("x", "50%");
+    textTag.setAttribute("dy", "0.35em");
+    textTag.setAttribute("pointer-events", "auto");
+    textTag.setAttribute("fill", Utils.pickTextColorBasedOnBgColor(color, 135, true));
+    textTag.setAttribute(
+      "font-family",
+      '"Open Sans","Helvetica Neue",Helvetica,Arial,' +
+        'sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol"'
+    );
+    textTag.textContent = character;
+    textTag.style.fontWeight = this.svgFontWeight.toString();
+    textTag.style.fontSize = this.fontSize + "px";
+    return textTag;
+  }
+
+  private unicodeSafeSubstring(str: string, count: number) {
+    const characters = str.match(/./gu);
+    return characters != null ? characters.slice(0, count).join("") : "";
+  }
+}