shell bypass 403
/**
* @function
* @memberof Popper.Utils
* @argument {Object} data - The data object generated by `update` method
* @argument {Boolean} shouldRound - If the offsets should be rounded at all
* @returns {Object} The popper's position offsets rounded
*
* The tale of pixel-perfect positioning. It's still not 100% perfect, but as
* good as it can be within reason.
* Discussion here: https://github.com/FezVrasta/popper.js/pull/715
*
* Low DPI screens cause a popper to be blurry if not using full pixels (Safari
* as well on High DPI screens).
*
* Firefox prefers no rounding for positioning and does not have blurriness on
* high DPI screens.
*
* Only horizontal placement and left/right values need to be considered.
*/
export default function getRoundedOffsets(data, shouldRound) {
const { popper, reference } = data.offsets;
const { round, floor } = Math;
const noRound = v => v;
const referenceWidth = round(reference.width);
const popperWidth = round(popper.width);
const isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
const isVariation = data.placement.indexOf('-') !== -1;
const sameWidthParity = referenceWidth % 2 === popperWidth % 2;
const bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;
const horizontalToInteger = !shouldRound
? noRound
: isVertical || isVariation || sameWidthParity
? round
: floor;
const verticalToInteger = !shouldRound ? noRound : round;
return {
left: horizontalToInteger(
bothOddWidth && !isVariation && shouldRound
? popper.left - 1
: popper.left
),
top: verticalToInteger(popper.top),
bottom: verticalToInteger(popper.bottom),
right: horizontalToInteger(popper.right),
};
}