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1265 lines
31 KiB
1265 lines
31 KiB
/**
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* we-cropper v1.3.9
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* (c) 2020 dlhandsome
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* @license MIT
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*/
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(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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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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var arg = [],
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len = arguments.length - 1;
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while (len-- > 0) arg[len] = arguments[len + 1];
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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 = uni.getSystemInfoSync();
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}
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return device
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}
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var tmp = {};
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var ref = getDevice();
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var pixelRatio = ref.pixelRatio;
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var DEFAULT = {
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id: {
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default: 'cropper',
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get: function get() {
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return tmp.id
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},
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set: function set(value) {
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if (typeof(value) !== 'string') {
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console.error(("id：" + value + " is invalid"));
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}
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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() {
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return tmp.width
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},
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set: function set(value) {
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if (typeof(value) !== 'number') {
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console.error(("width：" + value + " is invalid"));
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}
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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() {
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return tmp.height
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},
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set: function set(value) {
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if (typeof(value) !== 'number') {
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console.error(("height：" + value + " is invalid"));
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}
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tmp.height = value;
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}
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},
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pixelRatio: {
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default: pixelRatio,
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get: function get() {
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return tmp.pixelRatio
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},
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set: function set(value) {
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if (typeof(value) !== 'number') {
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console.error(("pixelRatio：" + value + " is invalid"));
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}
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tmp.pixelRatio = 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() {
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return tmp.scale
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},
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set: function set(value) {
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if (typeof(value) !== 'number') {
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console.error(("scale：" + value + " is invalid"));
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}
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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() {
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return tmp.zoom
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},
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set: function set(value) {
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if (typeof(value) !== 'number') {
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console.error(("zoom：" + value + " is invalid"));
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} else if (value < 0 || value > 10) {
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console.error("zoom should be ranged in 0 ~ 10");
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}
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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: '',
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get: function get() {
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return tmp.src
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},
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set: function set(value) {
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if (typeof(value) !== 'string') {
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console.error(("src：" + value + " is invalid"));
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}
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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() {
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return tmp.cut
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},
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set: function set(value) {
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if (typeof(value) !== 'object') {
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console.error(("cut：" + value + " is invalid"));
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}
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tmp.cut = value;
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}
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},
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boundStyle: {
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default: {},
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get: function get() {
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return tmp.boundStyle
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},
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set: function set(value) {
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if (typeof(value) !== 'object') {
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console.error(("boundStyle：" + value + " is invalid"));
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}
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tmp.boundStyle = 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() {
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return tmp.ready
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},
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set: function set(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() {
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return tmp.beforeImageLoad
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},
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set: function set(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() {
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return tmp.imageLoad
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},
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set: function set(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() {
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return tmp.beforeDraw
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},
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set: function set(value) {
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tmp.beforeDraw = value;
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}
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}
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};
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var ref$1 = getDevice();
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var windowWidth = ref$1.windowWidth;
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function prepare() {
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var self = this;
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// v1.4.0 版本中将不再自动绑定we-cropper实例
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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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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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Object.defineProperty(pageContext, 'wecropper', {
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get: function get() {
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console.warn(
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'Instance will not be automatically bound to the page after v1.4.0\n\n' +
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'Please use a custom instance name instead\n\n' +
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'Example: \n' +
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'this.mycropper = new WeCropper(options)\n\n' +
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'// ...\n' +
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'this.mycropper.getCropperImage()'
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);
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return self
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},
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configurable: true
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});
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};
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self.createCtx = function() {
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var id = self.id;
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var targetId = self.targetId;
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if (id) {
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self.ctx = self.ctx || uni.createCanvasContext(id);
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self.targetCtx = self.targetCtx || uni.createCanvasContext(targetId);
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} else {
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console.error("constructor: create canvas context failed, 'id' must be valuable");
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}
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};
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self.deviceRadio = windowWidth / 750;
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}
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var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !==
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'undefined' ? self : {};
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function createCommonjsModule(fn, module) {
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return module = {
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exports: {}
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}, fn(module, module.exports), module.exports;
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}
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var tools = createCommonjsModule(function(module, exports) {
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/**
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* String type check
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*/
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exports.isStr = function(v) {
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return typeof v === 'string';
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};
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/**
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* Number type check
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*/
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exports.isNum = function(v) {
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return typeof v === 'number';
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};
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/**
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* Array type check
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*/
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exports.isArr = Array.isArray;
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/**
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* undefined type check
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*/
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exports.isUndef = function(v) {
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return v === undefined;
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};
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exports.isTrue = function(v) {
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return v === true;
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};
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exports.isFalse = function(v) {
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return v === false;
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};
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/**
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* Function type check
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*/
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exports.isFunc = function(v) {
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return typeof v === 'function';
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};
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/**
|
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* Quick object check - this is primarily used to tell
|
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* Objects from primitive values when we know the value
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* is a JSON-compliant type.
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*/
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exports.isObj = exports.isObject = function(obj) {
|
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return obj !== null && typeof obj === 'object'
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};
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|
|
/**
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* Strict object type check. Only returns true
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* for plain JavaScript objects.
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*/
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var _toString = Object.prototype.toString;
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exports.isPlainObject = function(obj) {
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return _toString.call(obj) === '[object Object]'
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};
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/**
|
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* Check whether the object has the property.
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*/
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var hasOwnProperty = Object.prototype.hasOwnProperty;
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exports.hasOwn = function(obj, key) {
|
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return hasOwnProperty.call(obj, key)
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};
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/**
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* Perform no operation.
|
|
* Stubbing args to make Flow happy without leaving useless transpiled code
|
|
* with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/)
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*/
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exports.noop = function(a, b, c) {};
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/**
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* Check if val is a valid array index.
|
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*/
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exports.isValidArrayIndex = function(val) {
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var n = parseFloat(String(val));
|
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return n >= 0 && Math.floor(n) === n && isFinite(val)
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};
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});
|
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var tools_7 = tools.isFunc;
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var tools_10 = tools.isPlainObject;
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var EVENT_TYPE = ['ready', 'beforeImageLoad', 'beforeDraw', 'imageLoad'];
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|
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function observer() {
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var self = this;
|
|
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self.on = function(event, fn) {
|
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if (EVENT_TYPE.indexOf(event) > -1) {
|
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if (tools_7(fn)) {
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event === 'ready' ?
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fn(self) :
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self[("on" + (firstLetterUpper(event)))] = fn;
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}
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} else {
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console.error(("event: " + event + " is invalid"));
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}
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return self
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};
|
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}
|
|
|
|
function wxPromise(fn) {
|
|
return function(obj) {
|
|
var args = [],
|
|
len = arguments.length - 1;
|
|
while (len-- > 0) args[len] = arguments[len + 1];
|
|
|
|
if (obj === void 0) obj = {};
|
|
return new Promise(function(resolve, reject) {
|
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obj.success = function(res) {
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resolve(res);
|
|
};
|
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obj.fail = function(err) {
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reject(err);
|
|
};
|
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fn.apply(void 0, [obj].concat(args));
|
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})
|
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}
|
|
}
|
|
|
|
function draw(ctx, reserve) {
|
|
if (reserve === void 0) reserve = false;
|
|
|
|
return new Promise(function(resolve) {
|
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ctx.draw(reserve, resolve);
|
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})
|
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}
|
|
|
|
var getImageInfo = wxPromise(uni.getImageInfo);
|
|
|
|
var canvasToTempFilePath = wxPromise(uni.canvasToTempFilePath);
|
|
|
|
var base64 = createCommonjsModule(function(module, exports) {
|
|
/*! http://mths.be/base64 v0.1.0 by @mathias | MIT license */
|
|
(function(root) {
|
|
|
|
// Detect free variables `exports`.
|
|
var freeExports = 'object' == 'object' && exports;
|
|
|
|
// Detect free variable `module`.
|
|
var freeModule = 'object' == 'object' && module &&
|
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module.exports == freeExports && module;
|
|
|
|
// Detect free variable `global`, from Node.js or Browserified code, and use
|
|
// it as `root`.
|
|
var freeGlobal = typeof commonjsGlobal == 'object' && commonjsGlobal;
|
|
if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
|
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root = freeGlobal;
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
var InvalidCharacterError = function(message) {
|
|
this.message = message;
|
|
};
|
|
InvalidCharacterError.prototype = new Error;
|
|
InvalidCharacterError.prototype.name = 'InvalidCharacterError';
|
|
|
|
var error = function(message) {
|
|
// Note: the error messages used throughout this file match those used by
|
|
// the native `atob`/`btoa` implementation in Chromium.
|
|
throw new InvalidCharacterError(message);
|
|
};
|
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|
|
var TABLE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
|
|
// http://whatwg.org/html/common-microsyntaxes.html#space-character
|
|
var REGEX_SPACE_CHARACTERS = /[\t\n\f\r ]/g;
|
|
|
|
// `decode` is designed to be fully compatible with `atob` as described in the
|
|
// HTML Standard. http://whatwg.org/html/webappapis.html#dom-windowbase64-atob
|
|
// The optimized base64-decoding algorithm used is based on @atk’s excellent
|
|
// implementation. https://gist.github.com/atk/1020396
|
|
var decode = function(input) {
|
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input = String(input)
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.replace(REGEX_SPACE_CHARACTERS, '');
|
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var length = input.length;
|
|
if (length % 4 == 0) {
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input = input.replace(/==?$/, '');
|
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length = input.length;
|
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}
|
|
if (
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length % 4 == 1 ||
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// http://whatwg.org/C#alphanumeric-ascii-characters
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/[^+a-zA-Z0-9/]/.test(input)
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) {
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error(
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'Invalid character: the string to be decoded is not correctly encoded.'
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);
|
|
}
|
|
var bitCounter = 0;
|
|
var bitStorage;
|
|
var buffer;
|
|
var output = '';
|
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var position = -1;
|
|
while (++position < length) {
|
|
buffer = TABLE.indexOf(input.charAt(position));
|
|
bitStorage = bitCounter % 4 ? bitStorage * 64 + buffer : buffer;
|
|
// Unless this is the first of a group of 4 characters…
|
|
if (bitCounter++ % 4) {
|
|
// …convert the first 8 bits to a single ASCII character.
|
|
output += String.fromCharCode(
|
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0xFF & bitStorage >> (-2 * bitCounter & 6)
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|
);
|
|
}
|
|
}
|
|
return output;
|
|
};
|
|
|
|
// `encode` is designed to be fully compatible with `btoa` as described in the
|
|
// HTML Standard: http://whatwg.org/html/webappapis.html#dom-windowbase64-btoa
|
|
var encode = function(input) {
|
|
input = String(input);
|
|
if (/[^\0-\xFF]/.test(input)) {
|
|
// Note: no need to special-case astral symbols here, as surrogates are
|
|
// matched, and the input is supposed to only contain ASCII anyway.
|
|
error(
|
|
'The string to be encoded contains characters outside of the ' +
|
|
'Latin1 range.'
|
|
);
|
|
}
|
|
var padding = input.length % 3;
|
|
var output = '';
|
|
var position = -1;
|
|
var a;
|
|
var b;
|
|
var c;
|
|
var buffer;
|
|
// Make sure any padding is handled outside of the loop.
|
|
var length = input.length - padding;
|
|
|
|
while (++position < length) {
|
|
// Read three bytes, i.e. 24 bits.
|
|
a = input.charCodeAt(position) << 16;
|
|
b = input.charCodeAt(++position) << 8;
|
|
c = input.charCodeAt(++position);
|
|
buffer = a + b + c;
|
|
// Turn the 24 bits into four chunks of 6 bits each, and append the
|
|
// matching character for each of them to the output.
|
|
output += (
|
|
TABLE.charAt(buffer >> 18 & 0x3F) +
|
|
TABLE.charAt(buffer >> 12 & 0x3F) +
|
|
TABLE.charAt(buffer >> 6 & 0x3F) +
|
|
TABLE.charAt(buffer & 0x3F)
|
|
);
|
|
}
|
|
|
|
if (padding == 2) {
|
|
a = input.charCodeAt(position) << 8;
|
|
b = input.charCodeAt(++position);
|
|
buffer = a + b;
|
|
output += (
|
|
TABLE.charAt(buffer >> 10) +
|
|
TABLE.charAt((buffer >> 4) & 0x3F) +
|
|
TABLE.charAt((buffer << 2) & 0x3F) +
|
|
'='
|
|
);
|
|
} else if (padding == 1) {
|
|
buffer = input.charCodeAt(position);
|
|
output += (
|
|
TABLE.charAt(buffer >> 2) +
|
|
TABLE.charAt((buffer << 4) & 0x3F) +
|
|
'=='
|
|
);
|
|
}
|
|
|
|
return output;
|
|
};
|
|
|
|
var base64 = {
|
|
'encode': encode,
|
|
'decode': decode,
|
|
'version': '0.1.0'
|
|
};
|
|
|
|
// Some AMD build optimizers, like r.js, check for specific condition patterns
|
|
// like the following:
|
|
if (
|
|
typeof undefined == 'function' &&
|
|
typeof undefined.amd == 'object' &&
|
|
undefined.amd
|
|
) {
|
|
undefined(function() {
|
|
return base64;
|
|
});
|
|
} else if (freeExports && !freeExports.nodeType) {
|
|
if (freeModule) { // in Node.js or RingoJS v0.8.0+
|
|
freeModule.exports = base64;
|
|
} else { // in Narwhal or RingoJS v0.7.0-
|
|
for (var key in base64) {
|
|
base64.hasOwnProperty(key) && (freeExports[key] = base64[key]);
|
|
}
|
|
}
|
|
} else { // in Rhino or a web browser
|
|
root.base64 = base64;
|
|
}
|
|
|
|
}(commonjsGlobal));
|
|
});
|
|
|
|
function makeURI(strData, type) {
|
|
return 'data:' + type + ';base64,' + strData
|
|
}
|
|
|
|
function fixType(type) {
|
|
type = type.toLowerCase().replace(/jpg/i, 'jpeg');
|
|
var r = type.match(/png|jpeg|bmp|gif/)[0];
|
|
return 'image/' + r
|
|
}
|
|
|
|
function encodeData(data) {
|
|
var str = '';
|
|
if (typeof data === 'string') {
|
|
str = data;
|
|
} else {
|
|
for (var i = 0; i < data.length; i++) {
|
|
str += String.fromCharCode(data[i]);
|
|
}
|
|
}
|
|
return base64.encode(str)
|
|
}
|
|
|
|
/**
|
|
* 获取图像区域隐含的像素数据
|
|
* @param canvasId canvas标识
|
|
* @param x 将要被提取的图像数据矩形区域的左上角 x 坐标
|
|
* @param y 将要被提取的图像数据矩形区域的左上角 y 坐标
|
|
* @param width 将要被提取的图像数据矩形区域的宽度
|
|
* @param height 将要被提取的图像数据矩形区域的高度
|
|
* @param done 完成回调
|
|
*/
|
|
function getImageData(canvasId, x, y, width, height, done) {
|
|
uni.canvasGetImageData({
|
|
canvasId: canvasId,
|
|
x: x,
|
|
y: y,
|
|
width: width,
|
|
height: height,
|
|
success: function success(res) {
|
|
done(res, null);
|
|
},
|
|
fail: function fail(res) {
|
|
done(null, res);
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* 生成bmp格式图片
|
|
* 按照规则生成图片响应头和响应体
|
|
* @param oData 用来描述 canvas 区域隐含的像素数据 { data, width, height } = oData
|
|
* @returns {*} base64字符串
|
|
*/
|
|
function genBitmapImage(oData) {
|
|
//
|
|
// BITMAPFILEHEADER: http://msdn.microsoft.com/en-us/library/windows/desktop/dd183374(v=vs.85).aspx
|
|
// BITMAPINFOHEADER: http://msdn.microsoft.com/en-us/library/dd183376.aspx
|
|
//
|
|
var biWidth = oData.width;
|
|
var biHeight = oData.height;
|
|
var biSizeImage = biWidth * biHeight * 3;
|
|
var bfSize = biSizeImage + 54; // total header size = 54 bytes
|
|
|
|
//
|
|
// typedef struct tagBITMAPFILEHEADER {
|
|
// WORD bfType;
|
|
// DWORD bfSize;
|
|
// WORD bfReserved1;
|
|
// WORD bfReserved2;
|
|
// DWORD bfOffBits;
|
|
// } BITMAPFILEHEADER;
|
|
//
|
|
var BITMAPFILEHEADER = [
|
|
// WORD bfType -- The file type signature; must be "BM"
|
|
0x42, 0x4D,
|
|
// DWORD bfSize -- The size, in bytes, of the bitmap file
|
|
bfSize & 0xff, bfSize >> 8 & 0xff, bfSize >> 16 & 0xff, bfSize >> 24 & 0xff,
|
|
// WORD bfReserved1 -- Reserved; must be zero
|
|
0, 0,
|
|
// WORD bfReserved2 -- Reserved; must be zero
|
|
0, 0,
|
|
// DWORD bfOffBits -- The offset, in bytes, from the beginning of the BITMAPFILEHEADER structure to the bitmap bits.
|
|
54, 0, 0, 0
|
|
];
|
|
|
|
//
|
|
// typedef struct tagBITMAPINFOHEADER {
|
|
// DWORD biSize;
|
|
// LONG biWidth;
|
|
// LONG biHeight;
|
|
// WORD biPlanes;
|
|
// WORD biBitCount;
|
|
// DWORD biCompression;
|
|
// DWORD biSizeImage;
|
|
// LONG biXPelsPerMeter;
|
|
// LONG biYPelsPerMeter;
|
|
// DWORD biClrUsed;
|
|
// DWORD biClrImportant;
|
|
// } BITMAPINFOHEADER, *PBITMAPINFOHEADER;
|
|
//
|
|
var BITMAPINFOHEADER = [
|
|
// DWORD biSize -- The number of bytes required by the structure
|
|
40, 0, 0, 0,
|
|
// LONG biWidth -- The width of the bitmap, in pixels
|
|
biWidth & 0xff, biWidth >> 8 & 0xff, biWidth >> 16 & 0xff, biWidth >> 24 & 0xff,
|
|
// LONG biHeight -- The height of the bitmap, in pixels
|
|
biHeight & 0xff, biHeight >> 8 & 0xff, biHeight >> 16 & 0xff, biHeight >> 24 & 0xff,
|
|
// WORD biPlanes -- The number of planes for the target device. This value must be set to 1
|
|
1, 0,
|
|
// WORD biBitCount -- The number of bits-per-pixel, 24 bits-per-pixel -- the bitmap
|
|
// has a maximum of 2^24 colors (16777216, Truecolor)
|
|
24, 0,
|
|
// DWORD biCompression -- The type of compression, BI_RGB (code 0) -- uncompressed
|
|
0, 0, 0, 0,
|
|
// DWORD biSizeImage -- The size, in bytes, of the image. This may be set to zero for BI_RGB bitmaps
|
|
biSizeImage & 0xff, biSizeImage >> 8 & 0xff, biSizeImage >> 16 & 0xff, biSizeImage >> 24 & 0xff,
|
|
// LONG biXPelsPerMeter, unused
|
|
0, 0, 0, 0,
|
|
// LONG biYPelsPerMeter, unused
|
|
0, 0, 0, 0,
|
|
// DWORD biClrUsed, the number of color indexes of palette, unused
|
|
0, 0, 0, 0,
|
|
// DWORD biClrImportant, unused
|
|
0, 0, 0, 0
|
|
];
|
|
|
|
var iPadding = (4 - ((biWidth * 3) % 4)) % 4;
|
|
|
|
var aImgData = oData.data;
|
|
|
|
var strPixelData = '';
|
|
var biWidth4 = biWidth << 2;
|
|
var y = biHeight;
|
|
var fromCharCode = String.fromCharCode;
|
|
|
|
do {
|
|
var iOffsetY = biWidth4 * (y - 1);
|
|
var strPixelRow = '';
|
|
for (var x = 0; x < biWidth; x++) {
|
|
var iOffsetX = x << 2;
|
|
strPixelRow += fromCharCode(aImgData[iOffsetY + iOffsetX + 2]) +
|
|
fromCharCode(aImgData[iOffsetY + iOffsetX + 1]) +
|
|
fromCharCode(aImgData[iOffsetY + iOffsetX]);
|
|
}
|
|
|
|
for (var c = 0; c < iPadding; c++) {
|
|
strPixelRow += String.fromCharCode(0);
|
|
}
|
|
|
|
strPixelData += strPixelRow;
|
|
} while (--y)
|
|
|
|
var strEncoded = encodeData(BITMAPFILEHEADER.concat(BITMAPINFOHEADER)) + encodeData(strPixelData);
|
|
|
|
return strEncoded
|
|
}
|
|
|
|
/**
|
|
* 转换为图片base64
|
|
* @param canvasId canvas标识
|
|
* @param x 将要被提取的图像数据矩形区域的左上角 x 坐标
|
|
* @param y 将要被提取的图像数据矩形区域的左上角 y 坐标
|
|
* @param width 将要被提取的图像数据矩形区域的宽度
|
|
* @param height 将要被提取的图像数据矩形区域的高度
|
|
* @param type 转换图片类型
|
|
* @param done 完成回调
|
|
*/
|
|
function convertToImage(canvasId, x, y, width, height, type, done) {
|
|
if (done === void 0) done = function() {};
|
|
|
|
if (type === undefined) {
|
|
type = 'png';
|
|
}
|
|
type = fixType(type);
|
|
if (/bmp/.test(type)) {
|
|
getImageData(canvasId, x, y, width, height, function(data, err) {
|
|
var strData = genBitmapImage(data);
|
|
tools_7(done) && done(makeURI(strData, 'image/' + type), err);
|
|
});
|
|
} else {
|
|
console.error('暂不支持生成\'' + type + '\'类型的base64图片');
|
|
}
|
|
}
|
|
|
|
var CanvasToBase64 = {
|
|
convertToImage: convertToImage,
|
|
// convertToPNG: function (width, height, done) {
|
|
// return convertToImage(width, height, 'png', done)
|
|
// },
|
|
// convertToJPEG: function (width, height, done) {
|
|
// return convertToImage(width, height, 'jpeg', done)
|
|
// },
|
|
// convertToGIF: function (width, height, done) {
|
|
// return convertToImage(width, height, 'gif', done)
|
|
// },
|
|
convertToBMP: function(ref, done) {
|
|
if (ref === void 0) ref = {};
|
|
var canvasId = ref.canvasId;
|
|
var x = ref.x;
|
|
var y = ref.y;
|
|
var width = ref.width;
|
|
var height = ref.height;
|
|
if (done === void 0) done = function() {};
|
|
|
|
return convertToImage(canvasId, x, y, width, height, 'bmp', done)
|
|
}
|
|
};
|
|
|
|
function methods() {
|
|
var self = this;
|
|
|
|
var boundWidth = self.width; // 裁剪框默认宽度，即整个画布宽度
|
|
var boundHeight = self.height; // 裁剪框默认高度，即整个画布高度
|
|
|
|
var id = self.id;
|
|
var targetId = self.targetId;
|
|
var pixelRatio = self.pixelRatio;
|
|
|
|
var ref = self.cut;
|
|
var x = ref.x;
|
|
if (x === void 0) x = 0;
|
|
var y = ref.y;
|
|
if (y === void 0) y = 0;
|
|
var width = ref.width;
|
|
if (width === void 0) width = boundWidth;
|
|
var height = ref.height;
|
|
if (height === void 0) height = boundHeight;
|
|
|
|
self.updateCanvas = function(done) {
|
|
if (self.croperTarget) {
|
|
// 画布绘制图片
|
|
self.ctx.drawImage(
|
|
self.croperTarget,
|
|
self.imgLeft,
|
|
self.imgTop,
|
|
self.scaleWidth,
|
|
self.scaleHeight
|
|
);
|
|
}
|
|
tools_7(self.onBeforeDraw) && self.onBeforeDraw(self.ctx, self);
|
|
|
|
self.setBoundStyle(self.boundStyle); // 设置边界样式
|
|
|
|
self.ctx.draw(false, done);
|
|
return self
|
|
};
|
|
|
|
self.pushOrigin = self.pushOrign = function(src) {
|
|
self.src = src;
|
|
|
|
tools_7(self.onBeforeImageLoad) && self.onBeforeImageLoad(self.ctx, self);
|
|
|
|
return getImageInfo({
|
|
src: src
|
|
})
|
|
.then(function(res) {
|
|
var innerAspectRadio = res.width / res.height;
|
|
var customAspectRadio = width / height;
|
|
|
|
self.croperTarget = res.path;
|
|
|
|
if (innerAspectRadio < customAspectRadio) {
|
|
self.rectX = x;
|
|
self.baseWidth = width;
|
|
self.baseHeight = width / innerAspectRadio;
|
|
self.rectY = y - Math.abs((height - self.baseHeight) / 2);
|
|
} else {
|
|
self.rectY = y;
|
|
self.baseWidth = height * innerAspectRadio;
|
|
self.baseHeight = height;
|
|
self.rectX = x - Math.abs((width - self.baseWidth) / 2);
|
|
}
|
|
|
|
self.imgLeft = self.rectX;
|
|
self.imgTop = self.rectY;
|
|
self.scaleWidth = self.baseWidth;
|
|
self.scaleHeight = self.baseHeight;
|
|
|
|
self.update();
|
|
|
|
return new Promise(function(resolve) {
|
|
self.updateCanvas(resolve);
|
|
})
|
|
})
|
|
.then(function() {
|
|
tools_7(self.onImageLoad) && self.onImageLoad(self.ctx, self);
|
|
})
|
|
};
|
|
|
|
self.removeImage = function() {
|
|
self.src = '';
|
|
self.croperTarget = '';
|
|
return draw(self.ctx)
|
|
};
|
|
|
|
self.getCropperBase64 = function(done) {
|
|
if (done === void 0) done = function() {};
|
|
|
|
CanvasToBase64.convertToBMP({
|
|
canvasId: id,
|
|
x: x,
|
|
y: y,
|
|
width: width,
|
|
height: height
|
|
}, done);
|
|
};
|
|
|
|
self.getCropperImage = function(opt, fn) {
|
|
var customOptions = opt;
|
|
|
|
var canvasOptions = {
|
|
canvasId: id,
|
|
x: x,
|
|
y: y,
|
|
width: width,
|
|
height: height
|
|
};
|
|
|
|
var task = function() {
|
|
return Promise.resolve();
|
|
};
|
|
|
|
if (
|
|
tools_10(customOptions) &&
|
|
customOptions.original
|
|
) {
|
|
// original mode
|
|
task = function() {
|
|
self.targetCtx.drawImage(
|
|
self.croperTarget,
|
|
self.imgLeft * pixelRatio,
|
|
self.imgTop * pixelRatio,
|
|
self.scaleWidth * pixelRatio,
|
|
self.scaleHeight * pixelRatio
|
|
);
|
|
|
|
canvasOptions = {
|
|
canvasId: targetId,
|
|
x: x * pixelRatio,
|
|
y: y * pixelRatio,
|
|
width: width * pixelRatio,
|
|
height: height * pixelRatio
|
|
};
|
|
|
|
return draw(self.targetCtx)
|
|
};
|
|
}
|
|
|
|
return task()
|
|
.then(function() {
|
|
if (tools_10(customOptions)) {
|
|
canvasOptions = Object.assign({}, canvasOptions, customOptions);
|
|
}
|
|
|
|
if (tools_7(customOptions)) {
|
|
fn = customOptions;
|
|
}
|
|
|
|
var arg = canvasOptions.componentContext ?
|
|
[canvasOptions, canvasOptions.componentContext] :
|
|
[canvasOptions];
|
|
|
|
return canvasToTempFilePath.apply(null, arg)
|
|
})
|
|
.then(function(res) {
|
|
var tempFilePath = res.tempFilePath;
|
|
|
|
return tools_7(fn) ?
|
|
fn.call(self, tempFilePath, null) :
|
|
tempFilePath
|
|
})
|
|
.catch(function(err) {
|
|
if (tools_7(fn)) {
|
|
fn.call(self, null, err);
|
|
} else {
|
|
throw err
|
|
}
|
|
})
|
|
};
|
|
}
|
|
|
|
/**
|
|
* 获取最新缩放值
|
|
* @param oldScale 上一次触摸结束后的缩放值
|
|
* @param oldDistance 上一次触摸结束后的双指距离
|
|
* @param zoom 缩放系数
|
|
* @param touch0 第一指touch对象
|
|
* @param touch1 第二指touch对象
|
|
* @returns {*}
|
|
*/
|
|
var getNewScale = function(oldScale, oldDistance, zoom, touch0, touch1) {
|
|
var xMove, yMove, newDistance;
|
|
// 计算二指最新距离
|
|
xMove = Math.round(touch1.x - touch0.x);
|
|
yMove = Math.round(touch1.y - touch0.y);
|
|
newDistance = Math.round(Math.sqrt(xMove * xMove + yMove * yMove));
|
|
|
|
return oldScale + 0.001 * zoom * (newDistance - oldDistance)
|
|
};
|
|
|
|
function update() {
|
|
var self = this;
|
|
|
|
if (!self.src) {
|
|
return
|
|
}
|
|
|
|
self.__oneTouchStart = function(touch) {
|
|
self.touchX0 = Math.round(touch.x);
|
|
self.touchY0 = Math.round(touch.y);
|
|
};
|
|
|
|
self.__oneTouchMove = function(touch) {
|
|
var xMove, yMove;
|
|
// 计算单指移动的距离
|
|
if (self.touchended) {
|
|
return self.updateCanvas()
|
|
}
|
|
xMove = Math.round(touch.x - self.touchX0);
|
|
yMove = Math.round(touch.y - self.touchY0);
|
|
|
|
var imgLeft = Math.round(self.rectX + xMove);
|
|
var imgTop = Math.round(self.rectY + yMove);
|
|
|
|
self.outsideBound(imgLeft, imgTop);
|
|
|
|
self.updateCanvas();
|
|
};
|
|
|
|
self.__twoTouchStart = function(touch0, touch1) {
|
|
var xMove, yMove, oldDistance;
|
|
|
|
self.touchX1 = Math.round(self.rectX + self.scaleWidth / 2);
|
|
self.touchY1 = Math.round(self.rectY + self.scaleHeight / 2);
|
|
|
|
// 计算两指距离
|
|
xMove = Math.round(touch1.x - touch0.x);
|
|
yMove = Math.round(touch1.y - touch0.y);
|
|
oldDistance = Math.round(Math.sqrt(xMove * xMove + yMove * yMove));
|
|
|
|
self.oldDistance = oldDistance;
|
|
};
|
|
|
|
self.__twoTouchMove = function(touch0, touch1) {
|
|
var oldScale = self.oldScale;
|
|
var oldDistance = self.oldDistance;
|
|
var scale = self.scale;
|
|
var zoom = self.zoom;
|
|
|
|
self.newScale = getNewScale(oldScale, oldDistance, zoom, touch0, touch1);
|
|
|
|
// 设定缩放范围
|
|
self.newScale <= 1 && (self.newScale = 1);
|
|
self.newScale >= scale && (self.newScale = scale);
|
|
|
|
self.scaleWidth = Math.round(self.newScale * self.baseWidth);
|
|
self.scaleHeight = Math.round(self.newScale * self.baseHeight);
|
|
var imgLeft = Math.round(self.touchX1 - self.scaleWidth / 2);
|
|
var imgTop = Math.round(self.touchY1 - self.scaleHeight / 2);
|
|
|
|
self.outsideBound(imgLeft, imgTop);
|
|
|
|
self.updateCanvas();
|
|
};
|
|
|
|
self.__xtouchEnd = function() {
|
|
self.oldScale = self.newScale;
|
|
self.rectX = self.imgLeft;
|
|
self.rectY = self.imgTop;
|
|
};
|
|
}
|
|
|
|
var handle = {
|
|
// 图片手势初始监测
|
|
touchStart: function touchStart(e) {
|
|
var self = this;
|
|
var ref = e.touches;
|
|
var touch0 = ref[0];
|
|
var touch1 = ref[1];
|
|
|
|
if (!self.src) {
|
|
return
|
|
}
|
|
|
|
setTouchState(self, true, null, null);
|
|
|
|
// 计算第一个触摸点的位置，并参照改点进行缩放
|
|
self.__oneTouchStart(touch0);
|
|
|
|
// 两指手势触发
|
|
if (e.touches.length >= 2) {
|
|
self.__twoTouchStart(touch0, touch1);
|
|
}
|
|
},
|
|
|
|
// 图片手势动态缩放
|
|
touchMove: function touchMove(e) {
|
|
var self = this;
|
|
var ref = e.touches;
|
|
var touch0 = ref[0];
|
|
var touch1 = ref[1];
|
|
|
|
if (!self.src) {
|
|
return
|
|
}
|
|
|
|
setTouchState(self, null, true);
|
|
|
|
// 单指手势时触发
|
|
if (e.touches.length === 1) {
|
|
self.__oneTouchMove(touch0);
|
|
}
|
|
// 两指手势触发
|
|
if (e.touches.length >= 2) {
|
|
self.__twoTouchMove(touch0, touch1);
|
|
}
|
|
},
|
|
|
|
touchEnd: function touchEnd(e) {
|
|
var self = this;
|
|
|
|
if (!self.src) {
|
|
return
|
|
}
|
|
|
|
setTouchState(self, false, false, true);
|
|
self.__xtouchEnd();
|
|
}
|
|
};
|
|
|
|
function cut() {
|
|
var self = this;
|
|
var boundWidth = self.width; // 裁剪框默认宽度，即整个画布宽度
|
|
var boundHeight = self.height;
|
|
// 裁剪框默认高度，即整个画布高度
|
|
var ref = self.cut;
|
|
var x = ref.x;
|
|
if (x === void 0) x = 0;
|
|
var y = ref.y;
|
|
if (y === void 0) y = 0;
|
|
var width = ref.width;
|
|
if (width === void 0) width = boundWidth;
|
|
var height = ref.height;
|
|
if (height === void 0) height = boundHeight;
|
|
|
|
/**
|
|
* 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(ref) {
|
|
if (ref === void 0) ref = {};
|
|
var color = ref.color;
|
|
if (color === void 0) color = '#04b00f';
|
|
var mask = ref.mask;
|
|
if (mask === void 0) mask = 'rgba(0, 0, 0, 0.3)';
|
|
var lineWidth = ref.lineWidth;
|
|
if (lineWidth === void 0) lineWidth = 1;
|
|
|
|
var half = lineWidth / 2;
|
|
var boundOption = [{
|
|
start: {
|
|
x: x - half,
|
|
y: y + 10 - half
|
|
},
|
|
step1: {
|
|
x: x - half,
|
|
y: y - half
|
|
},
|
|
step2: {
|
|
x: x + 10 - half,
|
|
y: y - half
|
|
}
|
|
},
|
|
{
|
|
start: {
|
|
x: x - half,
|
|
y: y + height - 10 + half
|
|
},
|
|
step1: {
|
|
x: x - half,
|
|
y: y + height + half
|
|
},
|
|
step2: {
|
|
x: x + 10 - half,
|
|
y: y + height + half
|
|
}
|
|
},
|
|
{
|
|
start: {
|
|
x: x + width - 10 + half,
|
|
y: y - half
|
|
},
|
|
step1: {
|
|
x: x + width + half,
|
|
y: y - half
|
|
},
|
|
step2: {
|
|
x: x + width + half,
|
|
y: y + 10 - half
|
|
}
|
|
},
|
|
{
|
|
start: {
|
|
x: x + width + half,
|
|
y: y + height - 10 + half
|
|
},
|
|
step1: {
|
|
x: x + width + half,
|
|
y: y + height + half
|
|
},
|
|
step2: {
|
|
x: x + width - 10 + half,
|
|
y: y + height + half
|
|
}
|
|
}
|
|
];
|
|
|
|
// 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();
|
|
|
|
boundOption.forEach(function(op) {
|
|
self.ctx.beginPath();
|
|
self.ctx.setStrokeStyle(color);
|
|
self.ctx.setLineWidth(lineWidth);
|
|
self.ctx.moveTo(op.start.x, op.start.y);
|
|
self.ctx.lineTo(op.step1.x, op.step1.y);
|
|
self.ctx.lineTo(op.step2.x, op.step2.y);
|
|
self.ctx.stroke();
|
|
});
|
|
};
|
|
}
|
|
|
|
var version = "1.3.9";
|
|
|
|
var WeCropper = function WeCropper(params) {
|
|
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
|
|
};
|
|
|
|
WeCropper.prototype.init = 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);
|
|
} else {
|
|
self.updateCanvas();
|
|
}
|
|
setTouchState(self, false, false, false);
|
|
|
|
self.oldScale = 1;
|
|
self.newScale = 1;
|
|
|
|
return self
|
|
};
|
|
|
|
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;
|
|
|
|
})));
|
|
|