|
|
@@ -0,0 +1,1265 @@
|
|
|
+/**
|
|
|
+ * we-cropper v1.3.9
|
|
|
+ * (c) 2020 dlhandsome
|
|
|
+ * @license MIT
|
|
|
+ */
|
|
|
+(function(global, factory) {
|
|
|
+ typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
|
|
|
+ typeof define === 'function' && define.amd ? define(factory) :
|
|
|
+ (global.WeCropper = factory());
|
|
|
+}(this, (function() {
|
|
|
+ 'use strict';
|
|
|
+
|
|
|
+ var device = void 0;
|
|
|
+ var TOUCH_STATE = ['touchstarted', 'touchmoved', 'touchended'];
|
|
|
+
|
|
|
+ function firstLetterUpper(str) {
|
|
|
+ return str.charAt(0).toUpperCase() + str.slice(1)
|
|
|
+ }
|
|
|
+
|
|
|
+ function setTouchState(instance) {
|
|
|
+ var arg = [],
|
|
|
+ len = arguments.length - 1;
|
|
|
+ while (len-- > 0) arg[len] = arguments[len + 1];
|
|
|
+
|
|
|
+ TOUCH_STATE.forEach(function(key, i) {
|
|
|
+ if (arg[i] !== undefined) {
|
|
|
+ instance[key] = arg[i];
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+
|
|
|
+ function validator(instance, o) {
|
|
|
+ Object.defineProperties(instance, o);
|
|
|
+ }
|
|
|
+
|
|
|
+ function getDevice() {
|
|
|
+ if (!device) {
|
|
|
+ device = uni.getSystemInfoSync();
|
|
|
+ }
|
|
|
+ return device
|
|
|
+ }
|
|
|
+
|
|
|
+ var tmp = {};
|
|
|
+
|
|
|
+ var ref = getDevice();
|
|
|
+ var pixelRatio = ref.pixelRatio;
|
|
|
+
|
|
|
+ var DEFAULT = {
|
|
|
+ id: {
|
|
|
+ default: 'cropper',
|
|
|
+ get: function get() {
|
|
|
+ return tmp.id
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'string') {
|
|
|
+ console.error(("id：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.id = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ width: {
|
|
|
+ default: 750,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.width
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'number') {
|
|
|
+ console.error(("width：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.width = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ height: {
|
|
|
+ default: 750,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.height
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'number') {
|
|
|
+ console.error(("height：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.height = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ pixelRatio: {
|
|
|
+ default: pixelRatio,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.pixelRatio
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'number') {
|
|
|
+ console.error(("pixelRatio：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.pixelRatio = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ scale: {
|
|
|
+ default: 2.5,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.scale
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'number') {
|
|
|
+ console.error(("scale：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.scale = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ zoom: {
|
|
|
+ default: 5,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.zoom
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'number') {
|
|
|
+ console.error(("zoom：" + value + " is invalid"));
|
|
|
+ } else if (value < 0 || value > 10) {
|
|
|
+ console.error("zoom should be ranged in 0 ~ 10");
|
|
|
+ }
|
|
|
+ tmp.zoom = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ src: {
|
|
|
+ default: '',
|
|
|
+ get: function get() {
|
|
|
+ return tmp.src
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'string') {
|
|
|
+ console.error(("src：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.src = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ cut: {
|
|
|
+ default: {},
|
|
|
+ get: function get() {
|
|
|
+ return tmp.cut
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'object') {
|
|
|
+ console.error(("cut：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.cut = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ boundStyle: {
|
|
|
+ default: {},
|
|
|
+ get: function get() {
|
|
|
+ return tmp.boundStyle
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ if (typeof(value) !== 'object') {
|
|
|
+ console.error(("boundStyle：" + value + " is invalid"));
|
|
|
+ }
|
|
|
+ tmp.boundStyle = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ onReady: {
|
|
|
+ default: null,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.ready
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ tmp.ready = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ onBeforeImageLoad: {
|
|
|
+ default: null,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.beforeImageLoad
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ tmp.beforeImageLoad = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ onImageLoad: {
|
|
|
+ default: null,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.imageLoad
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ tmp.imageLoad = value;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ onBeforeDraw: {
|
|
|
+ default: null,
|
|
|
+ get: function get() {
|
|
|
+ return tmp.beforeDraw
|
|
|
+ },
|
|
|
+ set: function set(value) {
|
|
|
+ tmp.beforeDraw = value;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ var ref$1 = getDevice();
|
|
|
+ var windowWidth = ref$1.windowWidth;
|
|
|
+
|
|
|
+ function prepare() {
|
|
|
+ var self = this;
|
|
|
+
|
|
|
+ // v1.4.0 版本中将不再自动绑定we-cropper实例
|
|
|
+ self.attachPage = function() {
|
|
|
+ var pages = getCurrentPages();
|
|
|
+ // 获取到当前page上下文
|
|
|
+ var pageContext = pages[pages.length - 1];
|
|
|
+ // 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
|
|
|
+ Object.defineProperty(pageContext, 'wecropper', {
|
|
|
+ get: function get() {
|
|
|
+ console.warn(
|
|
|
+ 'Instance will not be automatically bound to the page after v1.4.0\n\n' +
|
|
|
+ 'Please use a custom instance name instead\n\n' +
|
|
|
+ 'Example: \n' +
|
|
|
+ 'this.mycropper = new WeCropper(options)\n\n' +
|
|
|
+ '// ...\n' +
|
|
|
+ 'this.mycropper.getCropperImage()'
|
|
|
+ );
|
|
|
+ return self
|
|
|
+ },
|
|
|
+ configurable: true
|
|
|
+ });
|
|
|
+ };
|
|
|
+
|
|
|
+ self.createCtx = function() {
|
|
|
+ var id = self.id;
|
|
|
+ var targetId = self.targetId;
|
|
|
+
|
|
|
+ if (id) {
|
|
|
+ self.ctx = self.ctx || uni.createCanvasContext(id);
|
|
|
+ self.targetCtx = self.targetCtx || uni.createCanvasContext(targetId);
|
|
|
+ } else {
|
|
|
+ console.error("constructor: create canvas context failed, 'id' must be valuable");
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ self.deviceRadio = windowWidth / 750;
|
|
|
+ }
|
|
|
+
|
|
|
+ var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !==
|
|
|
+ 'undefined' ? self : {};
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ function createCommonjsModule(fn, module) {
|
|
|
+ return module = {
|
|
|
+ exports: {}
|
|
|
+ }, fn(module, module.exports), module.exports;
|
|
|
+ }
|
|
|
+
|
|
|
+ var tools = createCommonjsModule(function(module, exports) {
|
|
|
+ /**
|
|
|
+ * String type check
|
|
|
+ */
|
|
|
+ exports.isStr = function(v) {
|
|
|
+ return typeof v === 'string';
|
|
|
+ };
|
|
|
+ /**
|
|
|
+ * Number type check
|
|
|
+ */
|
|
|
+ exports.isNum = function(v) {
|
|
|
+ return typeof v === 'number';
|
|
|
+ };
|
|
|
+ /**
|
|
|
+ * Array type check
|
|
|
+ */
|
|
|
+ exports.isArr = Array.isArray;
|
|
|
+ /**
|
|
|
+ * undefined type check
|
|
|
+ */
|
|
|
+ exports.isUndef = function(v) {
|
|
|
+ return v === undefined;
|
|
|
+ };
|
|
|
+
|
|
|
+ exports.isTrue = function(v) {
|
|
|
+ return v === true;
|
|
|
+ };
|
|
|
+
|
|
|
+ exports.isFalse = function(v) {
|
|
|
+ return v === false;
|
|
|
+ };
|
|
|
+ /**
|
|
|
+ * Function type check
|
|
|
+ */
|
|
|
+ exports.isFunc = function(v) {
|
|
|
+ return typeof v === 'function';
|
|
|
+ };
|
|
|
+ /**
|
|
|
+ * Quick object check - this is primarily used to tell
|
|
|
+ * Objects from primitive values when we know the value
|
|
|
+ * is a JSON-compliant type.
|
|
|
+ */
|
|
|
+ exports.isObj = exports.isObject = function(obj) {
|
|
|
+ return obj !== null && typeof obj === 'object'
|
|
|
+ };
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Strict object type check. Only returns true
|
|
|
+ * for plain JavaScript objects.
|
|
|
+ */
|
|
|
+ var _toString = Object.prototype.toString;
|
|
|
+ exports.isPlainObject = function(obj) {
|
|
|
+ return _toString.call(obj) === '[object Object]'
|
|
|
+ };
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Check whether the object has the property.
|
|
|
+ */
|
|
|
+ var hasOwnProperty = Object.prototype.hasOwnProperty;
|
|
|
+ exports.hasOwn = function(obj, key) {
|
|
|
+ return hasOwnProperty.call(obj, key)
|
|
|
+ };
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 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/)
|
|
|
+ */
|
|
|
+ exports.noop = function(a, b, c) {};
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Check if val is a valid array index.
|
|
|
+ */
|
|
|
+ exports.isValidArrayIndex = function(val) {
|
|
|
+ var n = parseFloat(String(val));
|
|
|
+ return n >= 0 && Math.floor(n) === n && isFinite(val)
|
|
|
+ };
|
|
|
+ });
|
|
|
+
|
|
|
+ var tools_7 = tools.isFunc;
|
|
|
+ var tools_10 = tools.isPlainObject;
|
|
|
+
|
|
|
+ var EVENT_TYPE = ['ready', 'beforeImageLoad', 'beforeDraw', 'imageLoad'];
|
|
|
+
|
|
|
+ function observer() {
|
|
|
+ var self = this;
|
|
|
+
|
|
|
+ self.on = function(event, fn) {
|
|
|
+ if (EVENT_TYPE.indexOf(event) > -1) {
|
|
|
+ if (tools_7(fn)) {
|
|
|
+ event === 'ready' ?
|
|
|
+ fn(self) :
|
|
|
+ self[("on" + (firstLetterUpper(event)))] = fn;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ console.error(("event: " + event + " is invalid"));
|
|
|
+ }
|
|
|
+ return self
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ 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) {
|
|
|
+ obj.success = function(res) {
|
|
|
+ resolve(res);
|
|
|
+ };
|
|
|
+ obj.fail = function(err) {
|
|
|
+ reject(err);
|
|
|
+ };
|
|
|
+ fn.apply(void 0, [obj].concat(args));
|
|
|
+ })
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ function draw(ctx, reserve) {
|
|
|
+ if (reserve === void 0) reserve = false;
|
|
|
+
|
|
|
+ return new Promise(function(resolve) {
|
|
|
+ ctx.draw(reserve, resolve);
|
|
|
+ })
|
|
|
+ }
|
|
|
+
|
|
|
+ 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 &&
|
|
|
+ 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) {
|
|
|
+ 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);
|
|
|
+ };
|
|
|
+
|
|
|
+ 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) {
|
|
|
+ input = String(input)
|
|
|
+ .replace(REGEX_SPACE_CHARACTERS, '');
|
|
|
+ var length = input.length;
|
|
|
+ if (length % 4 == 0) {
|
|
|
+ input = input.replace(/==?$/, '');
|
|
|
+ length = input.length;
|
|
|
+ }
|
|
|
+ if (
|
|
|
+ length % 4 == 1 ||
|
|
|
+ // http://whatwg.org/C#alphanumeric-ascii-characters
|
|
|
+ /[^+a-zA-Z0-9/]/.test(input)
|
|
|
+ ) {
|
|
|
+ error(
|
|
|
+ 'Invalid character: the string to be decoded is not correctly encoded.'
|
|
|
+ );
|
|
|
+ }
|
|
|
+ var bitCounter = 0;
|
|
|
+ var bitStorage;
|
|
|
+ var buffer;
|
|
|
+ var output = '';
|
|
|
+ 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(
|
|
|
+ 0xFF & bitStorage >> (-2 * bitCounter & 6)
|
|
|
+ );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ 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;
|
|
|
+
|
|
|
+})));
|
