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一套前端设计语言和基于React的实现
34 lines (33 loc) • 1.07 kB
JavaScript
import getViewportSize from '../../utils/dom/getViewportSize';
import { BottomLeft } from './bottom-left';
import { BottomRight } from './bottom-right';
import { TopLeft } from './top-left';
import { TopRight } from './top-right';
var positionMap = {
BottomLeft: BottomLeft,
BottomRight: BottomRight,
TopLeft: TopLeft,
TopRight: TopRight,
};
export var AutoTopRight = function (props) {
var contentRect = props.contentRect, cushion = props.cushion, anchorRect = props.anchorRect;
var viewport = getViewportSize();
var horizontal;
var vertical;
if (anchorRect.right - contentRect.width < 0 &&
anchorRect.left + contentRect.width < viewport.width) {
horizontal = 'Left';
}
else {
horizontal = 'Right';
}
if (anchorRect.top - cushion - contentRect.height < 0 &&
anchorRect.bottom + cushion + contentRect.height < viewport.height) {
vertical = 'Bottom';
}
else {
vertical = 'Top';
}
var key = "" + vertical + horizontal;
return positionMap[key](props);
};