Method handleEvent

src/plugins/plugin.legend.js:528–552

* Handle an event * @param {ChartEvent} e - The event to handle

(e)

	 * @param {ChartEvent} e - The event to handle
	 */
  handleEvent(e) {
    const opts = this.options;
    if (!isListened(e.type, opts)) {
      return;
    }

    // Chart event already has relative position in it
    const hoveredItem = this._getLegendItemAt(e.x, e.y);

    if (e.type === 'mousemove' || e.type === 'mouseout') {
      const previous = this._hoveredItem;
      const sameItem = itemsEqual(previous, hoveredItem);
      if (previous && !sameItem) {
        call(opts.onLeave, [e, previous, this], this);
      }

      this._hoveredItem = hoveredItem;

      if (hoveredItem && !sameItem) {
        call(opts.onHover, [e, hoveredItem, this], this);
      }
    } else if (hoveredItem) {
      call(opts.onClick, [e, hoveredItem, this], this);
    }
  }
}

function calculateItemSize(boxWidth, labelFont, ctx, legendItem, _itemHeight) {