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index.js
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index.js
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/* global define */
/// <reference path="./index.d.ts" />
(function (factory) {
if (typeof define === "function" && define.amd) {
// AMD. Register as an anonymous module.
define(["prefix-umd", "exif-js", "transformation-matrix"], factory);
} else if (typeof module === "object" && module.exports) {
// Node/CommonJS
module.exports = factory(
require("prefix-umd"),
require("exif-js"),
require("transformation-matrix")
);
} else {
// Browser globals
window.SimpleCrop = factory(
window.Prefix,
window.EXIF,
window.TransformationMatrix
);
}
})(function (Prefix, EXIF, TransformationMatrix) {
//兼容性处理
function whichTransitionEvent() {
var t;
var el = document.createElement("div");
var transitions = {
transition: "transitionend",
OTransition: "oTransitionEnd",
MozTransition: "transitionend",
WebkitTransition: "webkitTransitionEnd",
MsTransition: "msTransitionEnd",
};
for (t in transitions) {
if (el.style[t] !== undefined) {
return transitions[t];
}
}
}
var transitionEndEvent = whichTransitionEvent();
var transformProperty = Prefix.prefix("transform");
var transitionProperty = Prefix.prefix("transition");
//includes方法兼容
if (!Array.prototype.includes) {
Object.defineProperty(Array.prototype, "includes", {
value: function (valueToFind, fromIndex) {
var o = Object(this);
var len = o.length >>> 0;
if (len === 0) {
return false;
}
var n = fromIndex | 0;
var k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
function sameValueZero(x, y) {
return (
x === y ||
(typeof x === "number" &&
typeof y === "number" &&
isNaN(x) &&
isNaN(y))
);
}
while (k < len) {
if (sameValueZero(o[k], valueToFind)) {
return true;
}
k++;
}
return false;
},
});
}
/**
* ------------------------------------
* 配置
* @param title 标题
* @param visible 组件是否可见
* @param debug 是否开启调试模式（pc、mobile）
* @param $container 容器（pc、mobile）
* ------------------------------------
* 裁剪图片
* @param src 图片地址
* @param size 裁剪图片目标尺寸
* initSize 裁剪图片初始尺寸
* originImage 初始图片
* _orientation 图片方向
* ------------------------------------
* 裁剪框样式
* @param positionOffset 裁剪框屏幕偏移
* @param boldCornerLen 裁剪框边角加粗长度
* @param boldCornerWidth 裁剪框边角加粗宽度
* @param coverColor 遮罩背景颜色
* @param cropSizePercent 裁剪框占裁剪显示区域的比例
* @param borderWidth 裁剪框边框宽度
* @param borderColor 裁剪框边框颜色
* @param coverDraw 裁剪框辅助线绘制函数
* @param borderDraw 裁剪框边框绘制函数
* ------------------------------------
* 裁剪框拖拽
* @param cursorHoverWidth 裁剪框拖动触发范围
* @param isFixedAspectRatio 是否固定宽高比
* ------------------------------------
* 功能按钮
* @param funcBtns 功能按钮配置数组
* @param cropCallback 图片裁剪完成回调函数
* @param uploadCallback 重新上传裁剪图片回调函数
* @param closeCallback 关闭裁剪组件回调函数
* ------------------------------------
* 旋转刻度盘
* @param rotateSlider 是否开启旋转刻度盘
* @param startAngle 旋转刻度盘开始角度
* @param endAngle 旋转刻度盘结束角度
* @param gapAngle 旋转刻度盘间隔角度
* @param lineationItemWidth 旋转刻度盘间隔宽度
* lineationWidth 根据上述参数计算出的旋转刻度盘总宽度
* rotateWidth 旋转刻度盘显示宽度
* ------------------------------------
* 尺寸（为了减少计算的复杂性，所有坐标都统一为屏幕坐标及尺寸）
* maskViewSize 容器屏幕尺寸
* initCropRect 初始裁剪框屏幕尺寸
* cropRect 裁剪框屏幕尺寸
* cropPoints 裁剪框顶点坐标
* cropCenter 裁剪框中心点坐标
* contentWidth 图片显示宽度
* contentHeight 图片显示高度
* contentPoints 图片顶点坐标
* initContentPoints 图片初始顶点坐标
* _contentCurMoveX 图片 X 轴方向上的总位移
* _contentCurMoveY 图片 Y 轴方向上的总位移
* ------------------------------------
* 鼠标滚轮缩放
* _wheelTimeout 定时器
* ------------------------------------
* 拖动裁剪框
* _moveCursor 拖拽状态
* _moveCursorAction 裁剪框拖动进行时
*
* move 图片拖拽
* crop_leftTop 裁剪框左上拖拽
* crop_leftBottom 裁剪框左下拖拽
* crop_rightTop 裁剪框右上拖拽
* crop_rightBottom 裁剪框右下拖拽
* crop_left 裁剪框左拖拽
* crop_right 裁剪框右拖拽
* crop_top 裁剪框上拖拽
* crop_bottom 裁剪框下拖拽
* ------------------------------------
* 双指缩放
* _multiPoint 是否开始多点触控
* fingerLen 双指距离
* fingerScale 双指缩放倍数
* fingerCenter 双指操作中心
* ------------------------------------
* 其它
* times 实际尺寸/显示尺寸
* initScale 初始缩放倍数
* $resultCanvas 裁切结果（pc、mobile）
* resultSrc 裁剪结果（wechat）
* isSupportTouch 是否支持 touch 事件（pc、mobile）
* passiveSupported 事件是否支持 passive（pc、mobile）
* _precision 计算精度
*/
function SimpleCrop(params) {
//配置
this.id = "crop-" + new Date().getTime();
this.initSize = {
width: params.size.width,
height: params.size.height,
}; // 初始尺寸
this.visible = params.visible != null ? params.visible : true; //默认显示
this.debug = params.debug != null ? params.debug : false;
this.$container =
params.$container != null ? params.$container : document.body; //容器
//其它
var self = this;
self.passiveSupported = false; //判断是否支持 passive
try {
var options = Object.defineProperty({}, "passive", {
get: function () {
self.passiveSupported = true;
},
});
window.addEventListener("test", null, options);
} catch (err) {
//nothing
}
this.isSupportTouch = "ontouchend" in document ? true : false; //判断是否支持 touch 事件
this._precision = 5; // 计算精度
//操作状态
this._multiPoint = false; //是否开始多点触控
this._rotateScale = 1; //旋转缩放倍数
this._baseMoveX = 0; //旋转刻度盘位置初始化偏移量
this._curMoveX = 0; //旋转刻度盘位置当前总偏移量
this._changedX = 0; //旋转刻度盘当前偏移量
this._downPoints = []; //操作点坐标数组
this._isControl = false; //是否正在操作
/**
* 旋转交互分为两种：
* 一种是整角旋转（90度）；
* 另一种是基于整角旋转的基础上正负45度旋转。
*/
this._baseAngle = 0;
this.scaleTimes = 1; //缩放倍数
this.rotateAngle = 0; //旋转角度
this.construct();
//注意 construct 和 bindEvent 中间函数的先后顺序
this.initFuncBtns(params); //初始化功能按钮
this.initRotateSlider(params); //初始化旋转刻度盘
this.initChilds();
this.initTitle(params);
this.initBox(params);
this.initBoxBorder(params, true);
this.initBoxCursor(params);
this.setImage(params.src != null ? params.src : this.src);
this.bindEvent();
}
//初始化标题
SimpleCrop.prototype.initTitle = function (params) {
this.title = params.title != null ? params.title : "";
this.$title = document.querySelector("#" + this.id + " .crop-title");
this.$title.innerText = this.title;
};
//初始化裁剪框边框以及辅助线
SimpleCrop.prototype.initBoxBorder = function (params, onlyInit) {
this.borderWidth = params.borderWidth != null ? params.borderWidth : 2;
this.borderColor = params.borderColor != null ? params.borderColor : "#fff";
this.boldCornerLen =
params.boldCornerLen != null ? params.boldCornerLen : 32;
this.boldCornerWidth = params.boldCornerWidth ? params.boldCornerWidth : 4;
this.coverColor =
params.coverColor != null ? params.coverColor : "rgba(0,0,0,.3)";
this.coverDraw =
params.coverDraw != null ? params.coverDraw : function () { };
this.borderDraw =
params.borderDraw != null ? params.borderDraw : this.defaultBorderDraw;
if (!onlyInit) {
this.borderDraw(this.$cropCover);
this.coverDraw(this.$cropCover);
}
};
// 初始化裁剪框拖拽相关参数
SimpleCrop.prototype.initBoxCursor = function (params) {
const defaultCursorWidth = this.isSupportTouch
? this.borderWidth * 10
: this.borderWidth * 2;
this.cursorHoverWidth =
params.cursorHoverWidth != null
? params.cursorHoverWidth
: defaultCursorWidth;
this.isFixedAspectRatio =
params.isFixedAspectRatio != null ? params.isFixedAspectRatio : false;
};
//初始化功能按钮
SimpleCrop.prototype.initFuncBtns = function (params) {
/**
* 默认功能按钮为取消、裁剪、90度旋转、重置
* upload 重新上传
* crop 裁剪
* close 取消
* around 90度旋转
* reset 重置
*/
this.funcBtns =
params.funcBtns != null
? params.funcBtns
: ["close", "crop", "around", "reset"];
this.cropCallback =
params.cropCallback != null ? params.cropCallback : function () { };
this.closeCallback =
params.closeCallback != null ? params.closeCallback : function () { };
this.uploadCallback =
params.uploadCallback != null ? params.uploadCallback : function () { };
this.$cropBtns = document.querySelector("#" + this.id + " .crop-btns");
var html = "";
if (this.funcBtns.includes("upload")) {
html += '<div class="upload-btn-container">';
html += '<button class="upload-btn"></button>';
html += '<input type="file" accept="image/png,image/jpeg">';
html += "</div>";
}
if (this.funcBtns.includes("close")) {
html += '<button class="crop-close"></button>';
}
if (this.funcBtns.includes("around")) {
html += '<button class="crop-around"></button>';
}
if (this.funcBtns.includes("reset")) {
html += '<button class="crop-reset"></button>';
}
if (this.funcBtns.includes("crop")) {
html += '<button class="crop-btn"></button>';
}
this.$cropBtns.innerHTML = html;
//重新上传
if (this.funcBtns.includes("upload")) {
if (this.$uploadBtn) {
this.$uploadBtn.removeEventListener("change", this.__uploadInput);
} else {
this.__uploadInput = this.uploadInput.bind(this);
}
this.$uploadBtn = document.querySelector(
"#" + this.id + " .upload-btn-container"
);
this.$uploadInput = document.querySelector(
"#" + this.id + " .upload-btn-container input"
);
this.$uploadBtn.addEventListener("change", this.__uploadInput);
}
//裁剪
if (this.funcBtns.includes("crop")) {
if (this.$cropBtn) {
this.$cropBtn.removeEventListener("click", this.__crop);
} else {
this.__crop = this.crop.bind(this);
}
this.$cropBtn = document.querySelector("#" + this.id + " .crop-btn");
this.$cropBtn.addEventListener("click", this.__crop);
}
//整角旋转
if (this.funcBtns.includes("around")) {
if (this.$aroundBtn) {
this.$aroundBtn.removeEventListener("click", this.__around);
} else {
this.__around = this.around.bind(this);
}
this.$aroundBtn = document.querySelector("#" + this.id + " .crop-around");
this.$aroundBtn.addEventListener("click", this.__around);
}
//还原
if (this.funcBtns.includes("reset")) {
if (this.$resetBtn) {
this.$resetBtn.removeEventListener("click", this.reset);
} else {
this.__reset = this.reset.bind(this);
}
this.$resetBtn = document.querySelector("#" + this.id + " .crop-reset");
this.$resetBtn.addEventListener("click", this.__reset);
}
//关闭
if (this.funcBtns.includes("close")) {
if (this.$closeBtn) {
this.$closeBtn.removeEventListener("click", this.close);
} else {
this.__close = this.close.bind(this);
}
this.$closeBtn = document.querySelector("#" + this.id + " .crop-close");
this.$closeBtn.addEventListener("click", this.__close);
}
if (this.funcBtns.length > 0) {
this.$cropBtns.style.visibility = "";
} else {
this.$cropBtns.style.visibility = "hidden";
}
};
//初始化旋转刻度盘
SimpleCrop.prototype.initRotateSlider = function (params) {
this.rotateSlider =
params.rotateSlider != null ? params.rotateSlider : true; //默认开启
this.startAngle = params.startAngle != null ? params.startAngle : -90;
this.endAngle = params.endAngle != null ? params.endAngle : 90;
this.gapAngle = params.gapAngle != null ? params.gapAngle : 10;
this.lineationItemWidth =
params.lineationItemWidth != null ? params.lineationItemWidth : 40.5;
this.lineationItemWidth =
this.lineationItemWidth >= 40.5 ? this.lineationItemWidth : 40.5; // 最小宽度限制
//开始角度需要小于0，结束角度需要大于0，且开始角度和结束角度之间存在大于0的整数个间隔
this.startAngle = this.startAngle < 0 ? parseInt(this.startAngle) : 0;
this.endAngle = this.endAngle > 0 ? parseInt(this.endAngle) : 0;
this.gapAngle = this.gapAngle > 0 ? parseInt(this.gapAngle) : 3;
if ((this.endAngle - this.startAngle) % this.gapAngle != 0) {
this.endAngle =
Math.ceil((this.endAngle - this.startAngle) / this.gapAngle) *
this.gapAngle +
this.startAngle;
}
this.lineationWidth =
this.lineationItemWidth *
((this.endAngle - this.startAngle) / this.gapAngle + 1);
this.$cropRotate = document.querySelector("#" + this.id + " .crop-rotate");
this.$lineation = document.querySelector("#" + this.id + " .lineation");
this.$rotateCurrent = document.querySelector("#" + this.id + " .current");
var rotateStyle = window.getComputedStyle(this.$cropRotate);
this.rotateWidth = parseFloat(rotateStyle.getPropertyValue("width")); // 旋转刻度盘显示宽度
this._baseMoveX = -(
(this.lineationWidth * (0 - this.startAngle + this.gapAngle / 2)) /
(this.endAngle - this.startAngle + this.gapAngle) -
this.rotateWidth / 2
); //开始角度大于 0 且结束角度小于 0，以 0 度为起点
var angle = this.rotateAngle - this._baseAngle;
this._curMoveX =
(angle * this.lineationWidth) /
(this.endAngle - this.startAngle + this.gapAngle) +
this._baseMoveX;
//超出滚动边界，旋转刻度盘重置
if (
this._curMoveX > 0 ||
this._curMoveX < this.rotateWidth - this.lineationWidth
) {
this.startControl();
this._curMoveX = this._baseMoveX;
this._baseAngle = 0;
this.rotateAngle = 0;
this._changedX = 0;
this._rotateScale = 1;
this.transform(true);
this.endControl();
}
//setData
var html = "";
for (var i = this.startAngle; i <= this.endAngle; i += this.gapAngle) {
html +=
'<li><div class="number">' + i + '</div><div class="bg"></div></li>';
}
this.$lineation.innerHTML = html;
this.$lineation.style.width = this.lineationWidth + "px";
this.$lineation.style[transformProperty] =
"translateX(" + this._curMoveX + "px)";
if (this.rotateSlider) {
this.$cropRotate.style.visibility = "";
} else {
this.$cropRotate.style.visibility = "hidden";
}
};
//初始化相关子元素
SimpleCrop.prototype.initChilds = function () {
this.$cropMask = document.querySelector("#" + this.id + " .crop-mask");
var maskRect = this.$cropMask.getBoundingClientRect();
this.maskViewSize = {
top: maskRect.top,
left: maskRect.left,
width: maskRect.width,
height: maskRect.height,
};
this.$cropCover = document.querySelector("#" + this.id + " .crop-cover");
this.cropCoverContext = this.$cropCover.getContext("2d");
this.$cropCover.width = this.maskViewSize.width * window.devicePixelRatio;
this.$cropCover.height = this.maskViewSize.height * window.devicePixelRatio;
};
// 初始化裁剪图片目标尺寸、裁剪框显示比例、偏移等参数
SimpleCrop.prototype.initBox = function (params) {
this.size = params.size;
this.positionOffset =
params.positionOffset != null
? params.positionOffset
: {
top: 0,
left: 0,
};
this.cropSizePercent =
params.cropSizePercent != null ? params.cropSizePercent : 0.5; //默认0.5则表示高度或者宽度最多占50%
};
// 根据裁剪图片目标尺寸、裁剪框显示比例、偏移等参数重现绘制裁剪框
SimpleCrop.prototype.updateBox = function (params) {
this.initBox(params);
this.times =
this.size.width / this.maskViewSize.width >
this.size.height / this.maskViewSize.height
? this.size.width / this.maskViewSize.width / this.cropSizePercent
: this.size.height / this.maskViewSize.height / this.cropSizePercent;
//裁剪框位置相关
this.cropRect = {
width: this.size.width / this.times,
height: this.size.height / this.times,
};
this.cropRect.left =
(this.maskViewSize.width - this.cropRect.width) / 2 -
this.positionOffset.left;
this.cropRect.top =
(this.maskViewSize.height - this.cropRect.height) / 2 -
this.positionOffset.top;
this.initCropRect = {
left: this.cropRect.left,
top: this.cropRect.top,
width: this.cropRect.width,
height: this.cropRect.height,
};
this.cropPoints = this.rectToPoints(this.cropRect);
this.cropCenter = this.getPointsCenter(this.cropPoints);
this.borderDraw(this.$cropCover);
this.coverDraw(this.$cropCover);
this.transform(false, true);
};
//获取操作点
SimpleCrop.prototype.getControlPoints = function (e) {
if (e.touches) {
return e.touches;
} else {
return [
{
clientX: e.clientX,
clientY: e.clientY,
},
];
}
};
//获取操作事件名称
SimpleCrop.prototype.getControlEvents = function () {
if (this.isSupportTouch) {
return {
start: "touchstart",
move: "touchmove",
end: "touchend",
cancel: "touchcancel",
};
} else {
return {
start: "mousedown",
move: "mousemove",
end: "mouseup",
cancel: "mouseleave",
};
}
};
//html结构
SimpleCrop.prototype.construct = function () {
var html = "";
html += '<div class="crop-component">';
html += '<p class="crop-title"></p>'; // 标题
html += '<div class="crop-mask">';
html += '<canvas class="crop-cover"></canvas>';
html += "</div>";
//旋转刻度盘
if (this.rotateSlider) {
html += '<div class="crop-rotate">';
} else {
html += '<div class="crop-rotate" style="visibility:hidden;">';
}
html += '<ul class="lineation">';
html += "</ul>";
html += '<div class="current"></div>';
html += "</div>";
//功能按钮
html += '<div class="crop-btns" style="visibility:hidden;"></div>';
html += "</div>";
this.$target = document.createElement("div");
this.$target.id = this.id;
this.$target.classList.add("crop-whole-cover");
if (this.visible) {
this.$target.style.visibility = "";
} else {
this.$target.style.visibility = "hidden";
}
this.$target.innerHTML = html;
this.$container.appendChild(this.$target);
};
//默认绘制裁剪框
SimpleCrop.prototype.defaultBorderDraw = function ($cropCover) {
var borderWidth = this.borderWidth;
var boldCornerWidth = this.boldCornerWidth;
var boldCornerLen = this.boldCornerLen;
boldCornerLen =
boldCornerLen >= borderWidth * 2 ? boldCornerLen : borderWidth * 2; // 边角加粗长度至少是边框的两倍
var coverWidth = $cropCover.width;
var coverHeight = $cropCover.height;
this.cropCoverContext.clearRect(0, 0, coverWidth, coverHeight);
this.cropCoverContext.fillStyle = this.coverColor;
this.cropCoverContext.fillRect(0, 0, coverWidth, coverHeight);
//绘制边框（边框内嵌）
var borderRect = {
left: this.cropRect.left * window.devicePixelRatio,
top: this.cropRect.top * window.devicePixelRatio,
width: this.cropRect.width * window.devicePixelRatio,
height: this.cropRect.height * window.devicePixelRatio,
};
this.cropCoverContext.fillStyle = this.borderColor;
this.cropCoverContext.fillRect(
borderRect.left,
borderRect.top,
borderRect.width,
borderRect.height
);
if (this.boldCornerLen > 0) {
//边框四个角加粗
this.cropCoverContext.fillRect(
borderRect.left - boldCornerWidth,
borderRect.top - boldCornerWidth,
boldCornerLen,
boldCornerLen
); //左上角
this.cropCoverContext.fillRect(
borderRect.left + borderRect.width - boldCornerLen + boldCornerWidth,
borderRect.top - boldCornerWidth,
boldCornerLen,
boldCornerLen
); //右上角
this.cropCoverContext.fillRect(
borderRect.left - boldCornerWidth,
borderRect.top + borderRect.height - boldCornerLen + boldCornerWidth,
boldCornerLen,
boldCornerLen
); //左下角
this.cropCoverContext.fillRect(
borderRect.left + borderRect.width - boldCornerLen + boldCornerWidth,
borderRect.top + borderRect.height - boldCornerLen + boldCornerWidth,
boldCornerLen,
boldCornerLen
); //右下角
}
// 文字
var txtCanvas = document.createElement("canvas");
txtCanvas.width = borderRect.width;
txtCanvas.height = 24;
var ctx = txtCanvas.getContext("2d");
ctx.font = "24px Calibri";
ctx.fillStyle = this.borderColor;
ctx.textBaseline = "middle";
ctx.textAlign = "center";
var curSizeWidth = parseInt(
(this.size.width * this.cropRect.width) / this.initCropRect.width
);
var curSizeHeight = parseInt(
(this.size.height * this.cropRect.height) / this.initCropRect.height
);
ctx.fillText(
curSizeWidth + " x " + curSizeHeight,
txtCanvas.width / 2,
txtCanvas.height / 2
);
this.cropCoverContext.drawImage(
txtCanvas,
0,
0,
txtCanvas.width,
txtCanvas.height,
borderRect.left,
borderRect.top - 24 - 2 * this.boldCornerWidth,
txtCanvas.width,
txtCanvas.height
);
//清空内容区域
this.cropCoverContext.clearRect(
borderRect.left + borderWidth,
borderRect.top + borderWidth,
borderRect.width - 2 * borderWidth,
borderRect.height - 2 * borderWidth
);
};
//初始化
SimpleCrop.prototype.init = function () {
var width = this.contentWidth / 2;
var height = this.contentHeight / 2;
this.initContentPoints = [
{
x: -width,
y: height,
},
{
x: width,
y: height,
},
{
x: width,
y: -height,
},
{
x: -width,
y: -height,
},
];
this.contentPoints = this.initContentPoints.slice();
//计算初始缩放倍数
if (
this.size.width / this.size.height >
this.contentWidth / this.contentHeight
) {
this.initScale = this.size.width / this.contentWidth;
} else {
this.initScale = this.size.height / this.contentHeight;
}
this.reset();
};
//重置
SimpleCrop.prototype.reset = function () {
this.startControl();
this._contentCurMoveX = -this.positionOffset.left;
this._contentCurMoveY = -this.positionOffset.top;
this._rotateScale = 1;
this._baseAngle = 0;
this.rotateAngle = 0;
this._curMoveX = this._baseMoveX;
this._changedX = 0;
this.$lineation.style[transformProperty] =
"translateX(" + this._baseMoveX + "px)";
this.scaleTimes = this.initScale;
this.updateBox({
positionOffset: this.positionOffset,
cropSizePercent: this.cropSizePercent,
size: {
width: this.initSize.width,
height: this.initSize.height,
},
});
this.endControl();
};
//加载图片
SimpleCrop.prototype.load = function () {
var self = this;
self.originImage.onload = function () {
EXIF.getData(self.originImage, function () {
self._orientation = EXIF.getTag(this, "Orientation");
self.getRealCotentSize();
self.transformCoordinates();
self.init();
});
};
};
//设置裁剪图片
SimpleCrop.prototype.setImage = function (image) {
// base64转Blob
function dataURItoBlob(dataURI) {
var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0]; // mime类型
var byteString = atob(dataURI.split(',')[1]); //base64 解码
var arrayBuffer = new ArrayBuffer(byteString.length); //创建缓冲数组
var intArray = new Uint8Array(arrayBuffer); //创建视图
for (var i = 0; i < byteString.length; i++) {
intArray[i] = byteString.charCodeAt(i);
}
return new Blob([intArray], { type: mimeString });
}
// 解决兼容性问题。
function getObjectURL(blob) {
var url = null;
if (window.createObjectURL != undefined) {
url = window.createObjectURL(blob);
} else if (window.URL != undefined) {
url = window.URL.createObjectURL(blob);
} else if (window.webkitURL != undefined) {
url = window.webkitURL.createObjectURL(blob);
}
return url;
}
if (image != null && image != "") {
var self = this;
var type = Object.prototype.toString.call(image);
if (type === "[object String]") {
//字符串
self.src = image;
self.originImage = new Image();
self.originImage.crossOrigin = "Anonymous";
self.load();
const imgBlob = dataURItoBlob(image)
self.originImage.src = getObjectURL(imgBlob);
self.uploadCallback(self.src);
} else if (type === "[object File]") {
//文件
self.fileToSrc(image, function (src) {
self.src = src;
self.originImage = new Image();
self.originImage.crossOrigin = "Anonymous";
self.originImage.src = self.src;
self.load();
self.uploadCallback(self.src);
});
}
}
};
//显示
SimpleCrop.prototype.show = function (image) {
if (image) {
this.setImage(image);
}
this.visible = true;
this.$target.style.visibility = "";
};
//隐藏
SimpleCrop.prototype.hide = function () {
this.visible = false;
this.$target.style.visibility = "hidden";
};
//关闭
SimpleCrop.prototype.close = function () {
this.hide();
this.closeCallback();
};
//裁剪
SimpleCrop.prototype.crop = function () {
this.getCropImage();
this.cropCallback(this.$resultCanvas);
this.hide();
};
//上传
SimpleCrop.prototype.uploadInput = function (evt) {
var files = evt.target.files;
if (files.length > 0) {
this.show(files[0]);
}
this.$uploadInput.value = ""; //清空value属性，从而保证用户修改文件内容但是没有修改文件名时依然能上传成功
};
//整角旋转
SimpleCrop.prototype.around = function () {
this.startControl();
this.rotateAngle = (this._baseAngle - 90) % 360;
this._baseAngle = this.rotateAngle;
this._curMoveX = this._baseMoveX;
this._changedX = 0;
this._rotateScale = 1;
this.$lineation.style[transformProperty] =
"translateX(" + this._baseMoveX + "px)";
this.transform(false, true);
this.endControl();
};
// 裁剪框拖拽鼠标样式
SimpleCrop.prototype.moveCursor = function (touches) {
var point = {
x: touches[0].clientX - this.maskViewSize.left,
y: touches[0].clientY - this.maskViewSize.top,
};
var innerRect = {
left: this.cropRect.left + this.cursorHoverWidth,
top: this.cropRect.top + this.cursorHoverWidth,
width: this.cropRect.width - 2 * this.cursorHoverWidth,
height: this.cropRect.height - 2 * this.cursorHoverWidth,
};
var outerRect = {
left: this.cropRect.left - this.cursorHoverWidth,
top: this.cropRect.top - this.cursorHoverWidth,
width: this.cropRect.width + 2 * this.cursorHoverWidth,
height: this.cropRect.height + 2 * this.cursorHoverWidth,
};
if (
point.x >= outerRect.left &&
point.x <= outerRect.left + outerRect.width &&
point.y >= outerRect.top &&
point.y <= outerRect.height + outerRect.top &&
!(
point.x >= innerRect.left &&
point.x <= innerRect.left + innerRect.width &&
point.y >= innerRect.top &&
point.y <= innerRect.height + innerRect.top
)
) {
if (
point.x <= outerRect.left + this.boldCornerLen &&
point.y <= outerRect.top + this.boldCornerLen
) {
this.$cropCover.style.cursor = "nwse-resize"; // 左上角
this._moveCursor = "crop_leftTop";
} else if (
point.x <= outerRect.left + this.boldCornerLen &&
point.y >= outerRect.height + outerRect.top - this.boldCornerLen
) {
this.$cropCover.style.cursor = "nesw-resize"; // 左下角
this._moveCursor = "crop_leftBottom";
} else if (
point.x >= outerRect.width + outerRect.left - this.boldCornerLen &&
point.y <= outerRect.top + this.boldCornerLen
) {
this.$cropCover.style.cursor = "nesw-resize"; // 右上角
this._moveCursor = "crop_rightTop";
} else if (
point.x >= outerRect.width + outerRect.left - this.boldCornerLen &&
point.y >= outerRect.height + outerRect.top - this.boldCornerLen
) {
this.$cropCover.style.cursor = "nwse-resize"; // 右下角
this._moveCursor = "crop_rightBottom";
} else if (
point.y <= outerRect.top + this.boldCornerLen &&
!this.isFixedAspectRatio
) {
this.$cropCover.style.cursor = "ns-resize"; // 水平上
this._moveCursor = "crop_top";
} else if (
point.y >= outerRect.height + outerRect.top - this.boldCornerLen &&
!this.isFixedAspectRatio
) {
this.$cropCover.style.cursor = "ns-resize"; // 水平下
this._moveCursor = "crop_bottom";
} else if (
point.x <= outerRect.left + this.boldCornerLen &&
!this.isFixedAspectRatio
) {
this.$cropCover.style.cursor = "ew-resize"; // 竖直左
this._moveCursor = "crop_left";
} else if (
point.x >= outerRect.width + outerRect.left - this.boldCornerLen &&
!this.isFixedAspectRatio
) {
this.$cropCover.style.cursor = "ew-resize"; // 竖直右
this._moveCursor = "crop_right";
}
} else {
this.$cropCover.style.cursor = "move";
this._moveCursor = "move";
}
};
//裁剪框移动
SimpleCrop.prototype.cropMove = function (touches) {
var movePos = touches[0];
var startPos = this._downPoints[0];
var moveCursorAction = this._moveCursorAction.toLowerCase();
var changeX = movePos.clientX - startPos.clientX;
var finalMovePos = {
clientX: movePos.clientX,
clientY: movePos.clientY,
};
if (
(moveCursorAction.indexOf("left") != -1 ||
moveCursorAction.indexOf("right") != -1) &&
(moveCursorAction.indexOf("top") != -1 ||
moveCursorAction.indexOf("bottom") != -1)
) {
var tag = 0;
if (["crop_lefttop", "crop_rightbottom"].includes(moveCursorAction)) {
tag = 1;
} else {
tag = -1;
}
var fixedChangeY =
(changeX * this.initCropRect.height) / this.initCropRect.width;
finalMovePos.clientY = startPos.clientY + fixedChangeY * tag; // 以宽度变化为基准
}
if (moveCursorAction.indexOf("left") != -1) {
this.cropRect.left =
this.initCropRect.left + (finalMovePos.clientX - startPos.clientX);
this.cropRect.width =
this.initCropRect.width - (finalMovePos.clientX - startPos.clientX);
}
if (moveCursorAction.indexOf("right") != -1) {
this.cropRect.width =
this.initCropRect.width + (finalMovePos.clientX - startPos.clientX);
}
if (moveCursorAction.indexOf("top") != -1) {
this.cropRect.top =
this.initCropRect.top + (finalMovePos.clientY - startPos.clientY);
this.cropRect.height =
this.initCropRect.height - (finalMovePos.clientY - startPos.clientY);
}
if (moveCursorAction.indexOf("bottom") != -1) {
this.cropRect.height =
this.initCropRect.height + (finalMovePos.clientY - startPos.clientY);
}
if (this.cropRect.width <= this.boldCornerLen) {
this.cropRect.width = this.boldCornerLen;
}
if (this.cropRect.height <= this.boldCornerLen) {
this.cropRect.height = this.boldCornerLen;
}