ngx-bootstrap-ci/positioning/esm2015/utils/getTargetOffsets.js

Native Angular Bootstrap Components

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes} checked by tsc
 */
import { getOppositePlacement } from './getOppositePlacement';
import { getOuterSizes } from './getOuterSizes';
/**
 * @param {?} target
 * @param {?} hostOffsets
 * @param {?} position
 * @return {?}
 */
export function getTargetOffsets(target, hostOffsets, position) {
    const /** @type {?} */ placement = position.split(' ')[0];
    // Get target node sizes
    const /** @type {?} */ targetRect = getOuterSizes(target);
    // Add position, width and height to our offsets object
    const /** @type {?} */ targetOffsets = {
        width: targetRect.width,
        height: targetRect.height
    };
    // depending by the target placement we have to compute its offsets slightly differently
    const /** @type {?} */ isHoriz = ['right', 'left'].indexOf(placement) !== -1;
    const /** @type {?} */ mainSide = isHoriz ? 'top' : 'left';
    const /** @type {?} */ secondarySide = isHoriz ? 'left' : 'top';
    const /** @type {?} */ measurement = isHoriz ? 'height' : 'width';
    const /** @type {?} */ secondaryMeasurement = !isHoriz ? 'height' : 'width';
    targetOffsets[mainSide] =
        hostOffsets[mainSide] +
            hostOffsets[measurement] / 2 -
            targetRect[measurement] / 2;
    targetOffsets[secondarySide] = placement === secondarySide
        ? hostOffsets[secondarySide] - targetRect[secondaryMeasurement]
        : hostOffsets[getOppositePlacement(secondarySide)];
    return targetOffsets;
}

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