constructor(graphics) {
    super(componentNames.FREE_DRAWING, graphics);

    /**
     * Brush width
     * @type {number}
     */
    this.width = 12;

    /**
     * fabric.Color instance for brush color
     * @type {fabric.Color}
     */
    this.oColor = new fabric.Color('rgba(0, 0, 0, 0.5)');
  }
FreeDrawing
@class FreeDrawing
@param {Graphics} graphics - Graphics instance
@extends {Component}
@ignore