问当输入到角时，SVG的部分是不可见的

EN

export class SvgIconComponent implements OnInit {

  private svgIcon: SVGElement;
  _size?: { width?: number, height?: number };
  _class?: string;


  @Input() set size(dims: any) {
    this._size = typeof dims === 'object' ? dims : JSON.parse(dims);
  }
  @Input() set class(name: string) {
    this._class = name;
  }
  @Input()
  set name(iconName: string) {
    if (this.svgIcon) this.element.nativeElement.removeChild(this.svgIcon);
    const svgData = this.iconRegistryService.getIcon(iconName);
    this.svgIcon = this.svgElementFromString(svgData);
    this.svgIcon.classList.add("mysvg");
    this.element.nativeElement.appendChild(this.svgIcon);
  }

  get size() {
    return this._size;
  }

  get class() {
    return this._class;
  }

  constructor(private element: ElementRef, private iconRegistryService: IconRegistryService, @Optional() @Inject(DOCUMENT) private document: any) { }

  private svgElementFromString(svgContent: string): SVGElement {
    const div = this.document.createElement('DIV');
    div.innerHTML = svgContent;
    return div.querySelector('svg') || this.document.createElementNS('http://www.w3.org/2000/svg', 'path');
  }

  ngOnInit(): void {
    const params = this.svgIcon.getAttribute('viewBox').split(' ');
    const defaultWidth = params[2];
    const defaultHeight = params[3];
    this.size && this.size.width ? this.svgIcon.style.width = this.size.width + 'px' : this.svgIcon.style.width = defaultWidth + 'px';
    this.size && this.size.height ? this.svgIcon.style.height = this.size.height + 'px' : this.svgIcon.style.height = defaultHeight + 'px';;
    if (this.class) this.svgIcon.classList.add(this.class);
  }

}

export const myIconMessageBlue: {
  name: 'message_blue';
  data: string;
} = {
  name: 'message_blue',
/*
* 提示：该行代码过长，系统自动注释不进行高亮。一键复制会移除系统注释 
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*/
};  

<app-svg-icon name="message_blue"></app-svg-icon>