react-native-zoomable-view/lib/commonjs/ZoomableView.js

Zoomable View or Image on React Native with reanimated v2

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.ZoomableView = void 0;

var _react = _interopRequireDefault(require("react"));

var _reactNative = require("react-native");

var _reactNativeGestureHandler = require("react-native-gesture-handler");

var _reactNativeReanimated = _interopRequireWildcard(require("react-native-reanimated"));

function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const styles = _reactNative.StyleSheet.create({
  container: {
    alignItems: 'center',
    justifyContent: 'center'
  },
  focalPoint: { ..._reactNative.StyleSheet.absoluteFillObject,
    width: 20,
    height: 20,
    backgroundColor: 'blue',
    borderRadius: 10
  }
});

const ZoomableView = ({
  children
}) => {
  const scale = (0, _reactNativeReanimated.useSharedValue)(1);
  const rotate = (0, _reactNativeReanimated.useSharedValue)(0);
  const focalX = (0, _reactNativeReanimated.useSharedValue)(0);
  const focalY = (0, _reactNativeReanimated.useSharedValue)(0);
  const transitionX = (0, _reactNativeReanimated.useSharedValue)(0);
  const transitionY = (0, _reactNativeReanimated.useSharedValue)(0);
  const {
    width
  } = (0, _reactNative.useWindowDimensions)();

  const imagePinch = /*#__PURE__*/_react.default.createRef();

  const imageRotation = /*#__PURE__*/_react.default.createRef();

  const imagePan = /*#__PURE__*/_react.default.createRef();

  const pinchHandler = (0, _reactNativeReanimated.useAnimatedGestureHandler)({
    onActive: event => {
      scale.value = event.scale;
      focalX.value = event.focalX;
      focalY.value = event.focalY;
    },
    onEnd: () => {
      scale.value = 1;
    }
  });
  const roteteHandler = (0, _reactNativeReanimated.useAnimatedGestureHandler)({
    onActive: event => {
      rotate.value = event.rotation * 90;
    },
    onEnd: () => {
      rotate.value = (0, _reactNativeReanimated.withSpring)(0);
    }
  });
  const panHandler = (0, _reactNativeReanimated.useAnimatedGestureHandler)({
    onActive: event => {
      transitionX.value = -event.translationX;
      transitionY.value = -event.translationY;
    },
    onEnd: () => {
      transitionX.value = (0, _reactNativeReanimated.withSpring)(0);
      transitionY.value = (0, _reactNativeReanimated.withSpring)(0);
    }
  });
  const rStyle = (0, _reactNativeReanimated.useAnimatedStyle)(() => ({
    transform: [{
      translateX: focalX.value
    }, {
      translateY: focalY.value
    }, {
      translateX: -100
    }, {
      translateY: -100
    }, {
      scale: scale.value
    }, {
      translateX: -focalX.value
    }, {
      translateY: -focalY.value
    }, {
      translateX: 100
    }, {
      translateY: 100
    }, {
      rotate: `${rotate.value}deg`
    }, {
      translateX: -transitionX.value
    }, {
      translateY: -transitionY.value
    }]
  }));
  return /*#__PURE__*/_react.default.createElement(_reactNativeGestureHandler.PanGestureHandler, {
    simultaneousHandlers: [imagePinch, imageRotation],
    onGestureEvent: panHandler,
    ref: imagePan
  }, /*#__PURE__*/_react.default.createElement(_reactNativeReanimated.default.View, null, /*#__PURE__*/_react.default.createElement(_reactNativeGestureHandler.PinchGestureHandler, {
    ref: imagePinch,
    simultaneousHandlers: [imagePan, imageRotation],
    onGestureEvent: pinchHandler
  }, /*#__PURE__*/_react.default.createElement(_reactNativeReanimated.default.View, {
    style: {
      width
    }
  }, /*#__PURE__*/_react.default.createElement(_reactNativeGestureHandler.RotationGestureHandler, {
    ref: imageRotation,
    simultaneousHandlers: [imagePan, imagePinch],
    onGestureEvent: roteteHandler
  }, /*#__PURE__*/_react.default.createElement(_reactNativeReanimated.default.View, {
    style: [styles.container, rStyle],
    collapsable: false
  }, children))))));
};

exports.ZoomableView = ZoomableView;
//# sourceMappingURL=ZoomableView.js.map