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709 lines
19 KiB
709 lines
19 KiB
(function(global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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typeof define === 'function' && define.amd ? define(factory) :
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(global.weCropper = factory());
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}(this, (function() {
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'use strict';
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/**
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* Created by sail on 2017/6/11.
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*/
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var device = void 0;
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var TOUCH_STATE = ['touchstarted', 'touchmoved', 'touchended'];
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function firstLetterUpper(str) {
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return str.charAt(0).toUpperCase() + str.slice(1);
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}
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function setTouchState(instance) {
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for (var _len = arguments.length, arg = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
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arg[_key - 1] = arguments[_key];
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}
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TOUCH_STATE.forEach(function(key, i) {
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if (arg[i] !== undefined) {
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instance[key] = arg[i];
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}
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});
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}
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function validator(instance, o) {
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Object.defineProperties(instance, o);
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}
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function getDevice() {
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if (!device) {
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device = wx.getSystemInfoSync();
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}
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return device;
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}
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var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function(obj) {
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return typeof obj;
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} : function(obj) {
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return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
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};
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var classCallCheck = function(instance, Constructor) {
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if (!(instance instanceof Constructor)) {
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throw new TypeError("Cannot call a class as a function");
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}
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};
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var createClass = function() {
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function defineProperties(target, props) {
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for (var i = 0; i < props.length; i++) {
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var descriptor = props[i];
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descriptor.enumerable = descriptor.enumerable || false;
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descriptor.configurable = true;
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if ("value" in descriptor) descriptor.writable = true;
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Object.defineProperty(target, descriptor.key, descriptor);
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}
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}
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return function(Constructor, protoProps, staticProps) {
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if (protoProps) defineProperties(Constructor.prototype, protoProps);
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if (staticProps) defineProperties(Constructor, staticProps);
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return Constructor;
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};
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}();
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var slicedToArray = function() {
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function sliceIterator(arr, i) {
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var _arr = [];
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var _n = true;
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var _d = false;
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var _e = undefined;
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try {
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for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
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_arr.push(_s.value);
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if (i && _arr.length === i) break;
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}
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} catch (err) {
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_d = true;
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_e = err;
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} finally {
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try {
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if (!_n && _i["return"]) _i["return"]();
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} finally {
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if (_d) throw _e;
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}
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}
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return _arr;
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}
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return function(arr, i) {
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if (Array.isArray(arr)) {
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return arr;
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} else if (Symbol.iterator in Object(arr)) {
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return sliceIterator(arr, i);
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} else {
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throw new TypeError("Invalid attempt to destructure non-iterable instance");
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}
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};
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}();
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var tmp = {};
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var DEFAULT = {
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id: {
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default: 'cropper',
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get: function get$$1() {
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return tmp.id;
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},
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set: function set$$1(value) {
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if (typeof value !== 'string') {}
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tmp.id = value;
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}
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},
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width: {
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default: 750,
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get: function get$$1() {
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return tmp.width;
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},
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set: function set$$1(value) {
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tmp.width = value;
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}
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},
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height: {
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default: 750,
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get: function get$$1() {
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return tmp.height;
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},
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set: function set$$1(value) {
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tmp.height = value;
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}
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},
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scale: {
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default: 2.5,
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get: function get$$1() {
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return tmp.scale;
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},
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set: function set$$1(value) {
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tmp.scale = value;
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}
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},
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zoom: {
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default: 5,
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get: function get$$1() {
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return tmp.zoom;
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},
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set: function set$$1(value) {
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tmp.zoom = value;
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}
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},
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src: {
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default: 'cropper',
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get: function get$$1() {
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return tmp.src;
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},
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set: function set$$1(value) {
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tmp.src = value;
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}
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},
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cut: {
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default: {},
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get: function get$$1() {
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return tmp.cut;
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},
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set: function set$$1(value) {
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tmp.cut = value;
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}
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},
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onReady: {
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default: null,
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get: function get$$1() {
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return tmp.ready;
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},
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set: function set$$1(value) {
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tmp.ready = value;
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}
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},
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onBeforeImageLoad: {
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default: null,
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get: function get$$1() {
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return tmp.beforeImageLoad;
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},
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set: function set$$1(value) {
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tmp.beforeImageLoad = value;
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}
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},
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onImageLoad: {
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default: null,
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get: function get$$1() {
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return tmp.imageLoad;
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},
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set: function set$$1(value) {
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tmp.imageLoad = value;
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}
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},
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onBeforeDraw: {
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default: null,
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get: function get$$1() {
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return tmp.beforeDraw;
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},
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set: function set$$1(value) {
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tmp.beforeDraw = value;
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}
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}
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};
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/**
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* Created by sail on 2017/6/11.
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*/
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function prepare() {
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var self = this;
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var _getDevice = getDevice(),
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windowWidth = _getDevice.windowWidth;
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self.attachPage = function() {
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var pages = getCurrentPages
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// 获取到当前page上下文
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();
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var pageContext = pages[pages.length - 1];
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// 把this依附在Page上下文的wecropper属性上，便于在page钩子函数中访问
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pageContext.wecropper = self;
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};
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self.createCtx = function() {
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var id = self.id;
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if (id) {
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self.ctx = wx.createCanvasContext(id);
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}
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};
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self.deviceRadio = windowWidth / 750;
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self.deviceRadio=self.deviceRadio.toFixed(2)
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}
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/**
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*
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*/
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function observer() {
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var self = this;
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var EVENT_TYPE = ['ready', 'beforeImageLoad', 'beforeDraw', 'imageLoad'];
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self.on = function(event, fn) {
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if (EVENT_TYPE.indexOf(event) > -1) {
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if (typeof fn === 'function') {
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event === 'ready' ? fn(self) : self['on' + firstLetterUpper(event)] = fn;
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}
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}
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return self;
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};
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}
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/**
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* Created by sail on 2017/6/11.
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*/
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function methods() {
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var self = this;
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var deviceRadio = self.deviceRadio;
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console.log(JSON.stringify(self));
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var boundWidth = self.width; // 裁剪框默认宽度，即整个画布宽度
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var boundHeight = self.height; // 裁剪框默认高度，即整个画布高度
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var _self$cut = self.cut,
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_self$cut$x = _self$cut.x,
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x = _self$cut$x === undefined ? 0 : _self$cut$x,
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_self$cut$y = _self$cut.y,
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y = _self$cut$y === undefined ? 0 : _self$cut$y,
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_self$cut$width = _self$cut.width,
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width = _self$cut$width === undefined ? boundWidth : _self$cut$width,
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_self$cut$height = _self$cut.height,
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height = _self$cut$height === undefined ? boundHeight : _self$cut$height;
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self.updateCanvas = function() {
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if (self.croperTarget) {
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// 画布绘制图片
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self.ctx.drawImage(self.croperTarget, self.imgLeft, self.imgTop, self.scaleWidth, self.scaleHeight);
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}
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typeof self.onBeforeDraw === 'function' && self.onBeforeDraw(self.ctx, self);
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self.setBoundStyle // 设置边界样式
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();
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self.ctx.draw();
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return self;
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};
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self.pushOrign = function(src) {
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self.src = src;
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typeof self.onBeforeImageLoad === 'function' && self.onBeforeImageLoad(self.ctx, self);
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uni.getImageInfo({
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src: src,
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success: function success(res) {
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var innerAspectRadio = res.width / res.height;
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self.croperTarget = res.path||src;
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if (innerAspectRadio < width / height) {
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self.rectX = x;
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self.baseWidth = width;
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self.baseHeight = width / innerAspectRadio;
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self.rectY = y - Math.abs((height - self.baseHeight) / 2);
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} else {
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self.rectY = y;
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self.baseWidth = height * innerAspectRadio;
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self.baseHeight = height;
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self.rectX = x - Math.abs((width - self.baseWidth) / 2);
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}
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self.imgLeft = self.rectX;
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self.imgTop = self.rectY;
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self.scaleWidth = self.baseWidth;
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self.scaleHeight = self.baseHeight;
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self.updateCanvas();
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typeof self.onImageLoad === 'function' && self.onImageLoad(self.ctx, self);
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}
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});
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self.update();
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return self;
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};
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self.getCropperImage = function() {
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for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
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args[_key] = arguments[_key];
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}
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var id = self.id;
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var ARG_TYPE = toString.call(args[0]);
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switch (ARG_TYPE) {
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case '[object Object]':
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var _args$0$quality = args[0].quality,
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quality = _args$0$quality === undefined ? 10 : _args$0$quality;
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console.log("quality--"+quality);
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uni.canvasToTempFilePath({
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canvasId: id,
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x: x,
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y: y,
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width: width,
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height: height,
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destWidth: width * quality / (deviceRadio * 10),
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destHeight: height * quality / (deviceRadio * 10),
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success: function success(res) {
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console.log(res);
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typeof args[args.length - 1] === 'function' && args[args.length - 1](res.tempFilePath);
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}
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});
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break;
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case '[object Function]':
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uni.canvasToTempFilePath({
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canvasId: id,
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x: x,
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y: y,
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fileType:"jpg",
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width: width,
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height: height,
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destWidth: width ,
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destHeight: height,
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success: function success(res) {
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typeof args[args.length - 1] === 'function' && args[args.length - 1](res.tempFilePath);
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}
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});
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break;
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}
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return self;
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};
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}
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/**
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* Created by sail on 2017/6/11.
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*/
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function update() {
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var self = this;
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if (!self.src) return;
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self.__oneTouchStart = function(touch) {
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self.touchX0 = touch.x;
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self.touchY0 = touch.y;
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};
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self.__oneTouchMove = function(touch) {
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var xMove = void 0,
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yMove = void 0;
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//计算单指移动的距离
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if (self.touchended) {
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return self.updateCanvas();
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}
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xMove = touch.x - self.touchX0;
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yMove = touch.y - self.touchY0;
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var imgLeft = self.rectX + xMove;
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var imgTop = self.rectY + yMove;
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self.outsideBound(imgLeft, imgTop);
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self.updateCanvas();
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};
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self.__twoTouchStart = function(touch0, touch1) {
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var xMove = void 0,
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yMove = void 0,
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oldDistance = void 0;
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self.touchX1 = self.rectX + self.scaleWidth / 2;
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self.touchY1 = self.rectY + self.scaleHeight / 2;
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//计算两指距离
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xMove = touch1.x - touch0.x;
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yMove = touch1.y - touch0.y;
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oldDistance = Math.sqrt(xMove * xMove + yMove * yMove);
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self.oldDistance = oldDistance;
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};
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self.__twoTouchMove = function(touch0, touch1) {
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var xMove = void 0,
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yMove = void 0,
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newDistance = void 0;
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var scale = self.scale,
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zoom = self.zoom;
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// 计算二指最新距离
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xMove = touch1.x - touch0.x;
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yMove = touch1.y - touch0.y;
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newDistance = Math.sqrt(xMove * xMove + yMove * yMove
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// 使用0.005的缩放倍数具有良好的缩放体验
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);
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self.newScale = self.oldScale + 0.001 * zoom * (newDistance - self.oldDistance);
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// 设定缩放范围
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self.newScale <= 1 && (self.newScale = 1);
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self.newScale >= scale && (self.newScale = scale);
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self.scaleWidth = self.newScale * self.baseWidth;
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self.scaleHeight = self.newScale * self.baseHeight;
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var imgLeft = self.touchX1 - self.scaleWidth / 2;
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var imgTop = self.touchY1 - self.scaleHeight / 2;
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self.outsideBound(imgLeft, imgTop);
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self.updateCanvas();
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};
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self.__xtouchEnd = function() {
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self.oldScale = self.newScale;
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self.rectX = self.imgLeft;
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self.rectY = self.imgTop;
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};
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}
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/**
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* Created by sail on 2017/6/11.
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*/
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var handle = {
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// 图片手势初始监测
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touchStart: function touchStart(e) {
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var self = this;
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var _e$touches = slicedToArray(e.touches, 2),
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touch0 = _e$touches[0],
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touch1 = _e$touches[1];
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console.log(JSON.stringify(touch1));
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if(!touch0.x){
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touch0.x=touch0.clientX;
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touch0.y=touch0.clientY;
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if(touch1){
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touch1.x=touch1.clientX;
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touch1.y=touch1.clientY;
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}
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}
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setTouchState(self, true, null, null
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//计算第一个触摸点的位置，并参照改点进行缩放
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);
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self.__oneTouchStart(touch0
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// 两指手势触发
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);
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if (e.touches.length >= 2) {
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self.__twoTouchStart(touch0, touch1);
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}
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},
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// 图片手势动态缩放
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touchMove: function touchMove(e) {
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var self = this;
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var _e$touches2 = slicedToArray(e.touches, 2),
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touch0 = _e$touches2[0],
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touch1 = _e$touches2[1];
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if(!touch0.x){
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touch0.x=touch0.clientX;
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touch0.y=touch0.clientY;
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if(touch1){
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touch1.x=touch1.clientX;
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touch1.y=touch1.clientY;
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}
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}
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setTouchState(self, null, true
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// 单指手势时触发
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);
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if (e.touches.length === 1) {
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self.__oneTouchMove(touch0);
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}
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// 两指手势触发
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if (e.touches.length >= 2) {
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self.__twoTouchMove(touch0, touch1);
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}
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},
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touchEnd: function touchEnd(e) {
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var self = this;
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setTouchState(self, false, false, true);
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self.__xtouchEnd();
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}
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};
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/**
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* Created by sail on 1017/6/12.
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|
*/
|
|
function cut() {
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|
var self = this;
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|
var deviceRadio = self.deviceRadio;
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|
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var boundWidth = self.width; // 裁剪框默认宽度，即整个画布宽度
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var boundHeight = self.height;
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|
// 裁剪框默认高度，即整个画布高度
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|
var _self$cut = self.cut,
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_self$cut$x = _self$cut.x,
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x = _self$cut$x === undefined ? 0 : _self$cut$x,
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_self$cut$y = _self$cut.y,
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y = _self$cut$y === undefined ? 0 : _self$cut$y,
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_self$cut$width = _self$cut.width,
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width = _self$cut$width === undefined ? boundWidth : _self$cut$width,
|
|
_self$cut$height = _self$cut.height,
|
|
height = _self$cut$height === undefined ? boundHeight : _self$cut$height;
|
|
|
|
/**
|
|
* 设置边界
|
|
* @param imgLeft 图片左上角横坐标值
|
|
* @param imgTop 图片左上角纵坐标值
|
|
*/
|
|
|
|
self.outsideBound = function(imgLeft, imgTop) {
|
|
self.imgLeft = imgLeft >= x ? x : self.scaleWidth + imgLeft - x <= width ? x + width - self.scaleWidth : imgLeft;
|
|
|
|
self.imgTop = imgTop >= y ? y : self.scaleHeight + imgTop - y <= height ? y + height - self.scaleHeight : imgTop;
|
|
};
|
|
|
|
/**
|
|
* 设置边界样式
|
|
* @param color 边界颜色
|
|
*/
|
|
self.setBoundStyle = function() {
|
|
var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
|
|
_ref$color = _ref.color,
|
|
color = _ref$color === undefined ? '#04b00f' : _ref$color,
|
|
_ref$mask = _ref.mask,
|
|
mask = _ref$mask === undefined ? 'rgba(0, 0, 0, 0.3)' : _ref$mask,
|
|
_ref$lineWidth = _ref.lineWidth,
|
|
lineWidth = _ref$lineWidth === undefined ? 1 : _ref$lineWidth;
|
|
|
|
// 绘制半透明层
|
|
self.ctx.beginPath();
|
|
self.ctx.setFillStyle(mask);
|
|
self.ctx.fillRect(0, 0, x, boundHeight);
|
|
self.ctx.fillRect(x, 0, width, y);
|
|
self.ctx.fillRect(x, y + height, width, boundHeight - y - height);
|
|
self.ctx.fillRect(x + width, 0, boundWidth - x - width, boundHeight);
|
|
self.ctx.fill
|
|
|
|
// 设置边界左上角样式
|
|
// 为使边界样式处于边界外边缘，此时x、y均要减少lineWidth
|
|
();
|
|
self.ctx.beginPath();
|
|
self.ctx.setStrokeStyle(color);
|
|
self.ctx.setLineWidth(lineWidth);
|
|
self.ctx.moveTo(x - lineWidth, y + 10 - lineWidth);
|
|
self.ctx.lineTo(x - lineWidth, y - lineWidth);
|
|
self.ctx.lineTo(x + 10 - lineWidth, y - lineWidth);
|
|
self.ctx.stroke
|
|
|
|
// 设置边界左下角样式
|
|
// 为使边界样式处于边界外边缘，此时x要减少lineWidth、y要增加lineWidth
|
|
();
|
|
self.ctx.beginPath();
|
|
self.ctx.setStrokeStyle(color);
|
|
self.ctx.setLineWidth(lineWidth);
|
|
self.ctx.moveTo(x - lineWidth, y + height - 10 + lineWidth);
|
|
self.ctx.lineTo(x - lineWidth, y + height + lineWidth);
|
|
self.ctx.lineTo(x + 10 - lineWidth, y + height + lineWidth);
|
|
self.ctx.stroke
|
|
|
|
// 设置边界右上角样式
|
|
// 为使边界样式处于边界外边缘，此时x要增加lineWidth、y要减少lineWidth
|
|
();
|
|
self.ctx.beginPath();
|
|
self.ctx.setStrokeStyle(color);
|
|
self.ctx.setLineWidth(lineWidth);
|
|
self.ctx.moveTo(x + width - 10 + lineWidth, y - lineWidth);
|
|
self.ctx.lineTo(x + width + lineWidth, y - lineWidth);
|
|
self.ctx.lineTo(x + width + lineWidth, y + 10 - lineWidth);
|
|
self.ctx.stroke
|
|
|
|
// 设置边界右下角样式
|
|
// 为使边界样式处于边界外边缘，此时x、y均要增加lineWidth
|
|
();
|
|
self.ctx.beginPath();
|
|
self.ctx.setStrokeStyle(color);
|
|
self.ctx.setLineWidth(lineWidth);
|
|
self.ctx.moveTo(x + width + lineWidth, y + height - 10 + lineWidth);
|
|
self.ctx.lineTo(x + width + lineWidth, y + height + lineWidth);
|
|
self.ctx.lineTo(x + width - 10 + lineWidth, y + height + lineWidth);
|
|
self.ctx.stroke();
|
|
};
|
|
}
|
|
|
|
var __version__ = '1.1.4';
|
|
|
|
var weCropper = function() {
|
|
function weCropper(params) {
|
|
classCallCheck(this, weCropper);
|
|
|
|
var self = this;
|
|
var _default = {};
|
|
|
|
validator(self, DEFAULT);
|
|
|
|
Object.keys(DEFAULT).forEach(function(key) {
|
|
_default[key] = DEFAULT[key].default;
|
|
});
|
|
Object.assign(self, _default, params);
|
|
|
|
self.prepare();
|
|
self.attachPage();
|
|
self.createCtx();
|
|
self.observer();
|
|
self.cutt();
|
|
self.methods();
|
|
self.init();
|
|
self.update();
|
|
|
|
return self;
|
|
}
|
|
|
|
createClass(weCropper, [{
|
|
key: 'init',
|
|
value: function init() {
|
|
var self = this;
|
|
var src = self.src;
|
|
|
|
|
|
self.version = __version__;
|
|
|
|
typeof self.onReady === 'function' && self.onReady(self.ctx, self);
|
|
|
|
if (src) {
|
|
self.pushOrign(src);
|
|
}
|
|
setTouchState(self, false, false, false);
|
|
|
|
self.oldScale = 1;
|
|
self.newScale = 1;
|
|
|
|
return self;
|
|
}
|
|
}]);
|
|
return weCropper;
|
|
}();
|
|
|
|
Object.assign(weCropper.prototype, handle);
|
|
|
|
|
|
weCropper.prototype.prepare = prepare;
|
|
weCropper.prototype.observer = observer;
|
|
weCropper.prototype.methods = methods;
|
|
weCropper.prototype.cutt = cut;
|
|
weCropper.prototype.update = update;
|
|
|
|
return weCropper;
|
|
|
|
})));
|