braintree-web/lib/frame-service/external/strategies/popup/position.js

A suite of tools for integrating Braintree in the browser

"use strict";

function top(height) {
  var windowHeight =
    window.outerHeight || document.documentElement.clientHeight;
  var windowTop = window.screenY == null ? window.screenTop : window.screenY;

  return center(windowHeight, height, windowTop);
}

function left(width) {
  var windowWidth = window.outerWidth || document.documentElement.clientWidth;
  var windowLeft = window.screenX == null ? window.screenLeft : window.screenX;

  return center(windowWidth, width, windowLeft);
}

function center(windowMetric, popupMetric, offset) {
  return (windowMetric - popupMetric) / 2 + offset;
}

module.exports = {
  top: top,
  left: left,
  center: center,
};