react-image-lens
Version:
image lens for react.js
323 lines (257 loc) • 13 kB
JavaScript
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory(require("react"), require("react-dom"));
else if(typeof define === 'function' && define.amd)
define(["react", "react-dom"], factory);
else if(typeof exports === 'object')
exports["ReactImageLens"] = factory(require("react"), require("react-dom"));
else
root["ReactImageLens"] = factory(root["React"], root["ReactDOM"]);
})(this, function(__WEBPACK_EXTERNAL_MODULE_2__, __WEBPACK_EXTERNAL_MODULE_3__) {
return /******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId])
/******/ return installedModules[moduleId].exports;
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ exports: {},
/******/ id: moduleId,
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/******/ };
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/ // Flag the module as loaded
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/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/ // Load entry module and return exports
/******/ return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _ImageMagnifier = __webpack_require__(1);
var _ImageMagnifier2 = _interopRequireDefault(_ImageMagnifier);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
exports.default = _ImageMagnifier2.default; /**
* Created by Freeman on 2016/9/12.
*/
/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _react = __webpack_require__(2);
var _react2 = _interopRequireDefault(_react);
var _reactDom = __webpack_require__(3);
var _reactDom2 = _interopRequireDefault(_reactDom);
var _Magnifier = __webpack_require__(4);
var _Magnifier2 = _interopRequireDefault(_Magnifier);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**
* 图片放大镜组件
*
* Created by Freeman on 2016/9/9.
*/
var ImageMagnifier = function (_Component) {
_inherits(ImageMagnifier, _Component);
function ImageMagnifier(props) {
_classCallCheck(this, ImageMagnifier);
var _this = _possibleConstructorReturn(this, (ImageMagnifier.__proto__ || Object.getPrototypeOf(ImageMagnifier)).call(this, props));
_this.onMouseMove = _this.onMouseMove.bind(_this);
_this.portalElement = null;
_this.state = {
x: 0,
y: 0,
offsetX: -1,
offsetY: -1
};
return _this;
}
_createClass(ImageMagnifier, [{
key: 'componentDidMount',
value: function componentDidMount() {
document.addEventListener('mousemove', this.onMouseMove);
if (!this.portalElement) {
this.portalElement = document.createElement('div');
document.body.appendChild(this.portalElement);
}
this.componentDidUpdate();
}
}, {
key: 'componentWillUnmount',
value: function componentWillUnmount() {
document.removeEventListener('mousemove', this.onMouseMove);
document.body.removeChild(this.portalElement);
this.portalElement = null;
}
}, {
key: 'onMouseMove',
value: function onMouseMove(e) {
var offset = getOffset(this.refs.giraffe);
//fix ie scrollX scrollY
//fix ff not support e.x e.y
this.setState({
x: e.clientX + (window.scrollX || window.pageXOffset),
y: e.clientY + (window.scrollY || window.pageYOffset),
offsetX: e.clientX - offset.x,
offsetY: e.clientY - offset.y
});
}
}, {
key: 'componentDidUpdate',
value: function componentDidUpdate() {
_reactDom2.default.render(_react2.default.createElement(_Magnifier2.default, _extends({
size: this.props.size,
smallImage: this.props.image,
zoomImage: this.props.zoomImage,
cursorOffset: this.props.cursorOffset
}, this.state)), this.portalElement);
}
}, {
key: 'render',
value: function render() {
return _react2.default.createElement('img', { src: this.props.image.src, ref: 'giraffe' });
}
}]);
return ImageMagnifier;
}(_react.Component);
ImageMagnifier.propTypes = {
// the size of the magnifier window
size: _react.PropTypes.number,
// the offset of the zoom bubble from the cursor
cursorOffset: _react.PropTypes.shape({
x: _react.PropTypes.number.isRequired,
y: _react.PropTypes.number.isRequired
}),
// the size of the non-zoomed-in image
image: _react.PropTypes.shape({
src: _react.PropTypes.string.isRequired,
width: _react.PropTypes.number.isRequired,
height: _react.PropTypes.number.isRequired
}).isRequired,
// the size of the zoomed-in image
zoomImage: _react.PropTypes.shape({
src: _react.PropTypes.string.isRequired,
width: _react.PropTypes.number.isRequired,
height: _react.PropTypes.number.isRequired
}).isRequired
};
ImageMagnifier.defaultProps = {
size: 200,
cursorOffset: { x: 0, y: 0 }
};
//fix firefox bug
function getOffset(el) {
var rect = el.getBoundingClientRect();
return { x: rect.left, y: rect.top };
}
exports.default = ImageMagnifier;
/***/ },
/* 2 */
/***/ function(module, exports) {
module.exports = __WEBPACK_EXTERNAL_MODULE_2__;
/***/ },
/* 3 */
/***/ function(module, exports) {
module.exports = __WEBPACK_EXTERNAL_MODULE_3__;
/***/ },
/* 4 */
/***/ function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _react = __webpack_require__(2);
var _react2 = _interopRequireDefault(_react);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var Magnifier = function Magnifier(props) {
var halfSize = props.size / 2;
var magX = props.zoomImage.width / props.smallImage.width;
var magY = props.zoomImage.height / props.smallImage.height;
var bgX = -(props.offsetX * magX - halfSize);
var bgY = -(props.offsetY * magY - halfSize);
var isVisible = props.offsetY < props.smallImage.height && props.offsetX < props.smallImage.width && props.offsetY > 0 && props.offsetX > 0;
return _react2.default.createElement(
'div',
{ style: {
position: 'absolute',
display: isVisible ? 'block' : 'none',
top: props.y,
left: props.x,
width: props.size,
height: props.size,
marginLeft: -halfSize + props.cursorOffset.x,
marginTop: -halfSize + props.cursorOffset.y,
backgroundColor: 'white',
borderRadius: props.size,
boxShadow: '1px 1px 6px rgba(0,0,0,0.3)'
} },
_react2.default.createElement('div', { style: {
width: props.size,
height: props.size,
backgroundImage: 'url(' + props.zoomImage.src + ')',
backgroundRepeat: 'no-repeat',
backgroundPosition: bgX + 'px ' + bgY + 'px',
borderRadius: props.size
} })
);
}; /**
* Created by Freeman on 2016/9/9.
*/
Magnifier.propTypes = {
// the size of the magnifier window
size: _react.PropTypes.number.isRequired,
// x position on screen
x: _react.PropTypes.number.isRequired,
// y position on screen
y: _react.PropTypes.number.isRequired,
// x position relative to the image
offsetX: _react.PropTypes.number.isRequired,
// y position relative to the image
offsetY: _react.PropTypes.number.isRequired,
// the offset of the zoom bubble from the cursor
cursorOffset: _react.PropTypes.shape({
x: _react.PropTypes.number.isRequired,
y: _react.PropTypes.number.isRequired
}).isRequired,
// the size of the non-zoomed-in image
smallImage: _react.PropTypes.shape({
src: _react.PropTypes.string.isRequired,
width: _react.PropTypes.number.isRequired,
height: _react.PropTypes.number.isRequired
}).isRequired,
// the size of the zoomed-in image
zoomImage: _react.PropTypes.shape({
src: _react.PropTypes.string.isRequired,
width: _react.PropTypes.number.isRequired,
height: _react.PropTypes.number.isRequired
}).isRequired
};
exports.default = Magnifier;
/***/ }
/******/ ])
});
;