@orca-fe/pocket/es/eq-ratio-box/EqRatioBox.js

UI components by orca-team

var _excluded = ["className", "width", "height", "mode", "xAlign", "yAlign", "scaleMode", "onRatioChange", "children"],
  _excluded2 = ["ratio"];
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
import React, { useEffect, useMemo, useRef } from 'react';
import { useSize } from 'ahooks';
import useStyles from "./EqRatioBox.style";
import EqRatioBoxContext, { useRatio } from "./EqRatioBoxContext";

// import './EqRatioBox.less';
import { jsx as _jsx } from "react/jsx-runtime";
var ef = () => {};
var EqRatioBox = props => {
  var _props$className = props.className,
    className = _props$className === void 0 ? '' : _props$className,
    width = props.width,
    height = props.height,
    _props$mode = props.mode,
    mode = _props$mode === void 0 ? 'contain' : _props$mode,
    _props$xAlign = props.xAlign,
    xAlign = _props$xAlign === void 0 ? 'center' : _props$xAlign,
    _props$yAlign = props.yAlign,
    yAlign = _props$yAlign === void 0 ? 'center' : _props$yAlign,
    _props$scaleMode = props.scaleMode,
    scaleMode = _props$scaleMode === void 0 ? true : _props$scaleMode,
    _props$onRatioChange = props.onRatioChange,
    onRatioChange = _props$onRatioChange === void 0 ? ef : _props$onRatioChange,
    children = props.children,
    otherProps = _objectWithoutProperties(props, _excluded);
  var styles = useStyles();
  var rootRef = useRef(null);
  var _ref = useSize(rootRef) || {},
    containerWidth = _ref.width,
    containerHeight = _ref.height;
  var hasSize = containerWidth != null && containerHeight != null;
  var _useMemo = useMemo(() => {
      if (!hasSize) {
        return {
          ratio: 0
        };
      }
      var fn = mode === 'contain' ? Math.min : Math.max;
      var ratio = fn(containerWidth / width, containerHeight / height);
      var contentWidth = scaleMode ? width : ratio * width;
      var contentHeight = scaleMode ? height : ratio * height;
      var left = 0.5 * (containerWidth - ratio * width);
      var top = 0.5 * (containerHeight - ratio * height);
      if (mode === 'contain') {
        if (xAlign === 'left') left = 0;
        if (xAlign === 'right') left *= 2;
        if (yAlign === 'top') top = 0;
        if (yAlign === 'bottom') top *= 2;
      }
      if (mode === 'cover') {
        if (xAlign === 'left') left = 0;
        if (xAlign === 'right') left *= 2;
        if (yAlign === 'top') top = 0;
        if (yAlign === 'bottom') top *= 2;
      }
      return {
        ratio,
        position: 'absolute',
        transformOrigin: 'top left',
        transform: scaleMode ? `scale(${ratio})` : '',
        top: Math.round(top),
        left: Math.round(left),
        width: Math.round(contentWidth),
        height: Math.round(contentHeight)
      };
    }, [containerWidth, containerHeight, width, height, xAlign, yAlign, mode]),
    ratio = _useMemo.ratio,
    style = _objectWithoutProperties(_useMemo, _excluded2);
  useEffect(() => {
    if (ratio) {
      onRatioChange(ratio);
    }
  }, [ratio]);
  return /*#__PURE__*/_jsx("div", _objectSpread(_objectSpread({
    className: `${styles.root} ${className}`,
    ref: rootRef
  }, otherProps), {}, {
    children: /*#__PURE__*/_jsx("div", {
      className: "eq-ratio-box-content",
      style: style,
      children: hasSize && /*#__PURE__*/_jsx(EqRatioBoxContext.Provider, {
        value: {
          ratio
        },
        children: children
      })
    })
  }));
};
EqRatioBox.useRatio = useRatio;
EqRatioBox.EqRatioBoxContext = EqRatioBoxContext;
export default EqRatioBox;