package.lib.dom-utils.getViewportRect.js Maven / Gradle / Ivy

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Tooltip and Popover Positioning Engine

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import getWindow from "./getWindow.js";
import getDocumentElement from "./getDocumentElement.js";
import getWindowScrollBarX from "./getWindowScrollBarX.js";
import isLayoutViewport from "./isLayoutViewport.js";
export default function getViewportRect(element, strategy) {
  var win = getWindow(element);
  var html = getDocumentElement(element);
  var visualViewport = win.visualViewport;
  var width = html.clientWidth;
  var height = html.clientHeight;
  var x = 0;
  var y = 0;

  if (visualViewport) {
    width = visualViewport.width;
    height = visualViewport.height;
    var layoutViewport = isLayoutViewport();

    if (layoutViewport || !layoutViewport && strategy === 'fixed') {
      x = visualViewport.offsetLeft;
      y = visualViewport.offsetTop;
    }
  }

  return {
    width: width,
    height: height,
    x: x + getWindowScrollBarX(element),
    y: y
  };
}