@ckeditor/ckeditor5-utils/src/dom/getvisualviewportoffset.js

Miscellaneous utilities used by CKEditor 5.

/**
 * @license Copyright (c) 2003-2025, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
 */
/**
 * @module utils/dom/getvisualviewportoffset
 */
import global from './global.js';
import env from '../env.js';
/**
 * Returns the visual viewport offsets to adjust elements with `position: fixed` style.
 */
export default function getVisualViewportOffset() {
    const visualViewport = global.window.visualViewport;
    if (!visualViewport || !(env.isiOS || env.isSafari)) {
        return { left: 0, top: 0 };
    }
    const left = Math.max(Math.round(visualViewport.offsetLeft), 0);
    const top = Math.max(Math.round(visualViewport.offsetTop), 0);
    return { left, top };
}