Type: Number Default: 0 Options: 0: the crop box is just within the container 裁剪框只能在 1内移动 1: the crop box should be within the canvas 裁剪框 只能在 2图片内移动 2: the canvas should not be within the container 2图片 不全部铺满1 （即缩小时可以有一边出现空隙） 3: the container should be within the canvas 2图片 全部铺满1 （即 再怎么缩小也不会出现空隙）
dragMode 拖动模式
Default: ‘crop' Options: ‘crop': create a new crop box 当鼠标 点击一处时根据这个点重新生成一个 裁剪框 ‘move': move the canvas 可以拖动图片 ‘none': do nothing 图片就不能拖动了
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(require('jquery')) :
typeof define === 'function' && define.amd ? define(['jquery'], factory) :
(factory(global.$));
}(this, (function ($) { 'use strict';
$ = 'default' in $ ? $['default'] : $;
var DEFAULTS = {
// Define the view mode of the cropper
viewMode: 0, // 0, 1, 2, 3 显示
// Define the dragging mode of the cropper
dragMode: 'crop', // 'crop', 'move' or 'none'
// Define the aspect ratio of the crop box
aspectRatio: NaN,
// An object with the previous cropping result data
data: null,
// A selector for adding extra containers to preview
preview: '',
// Re-render the cropper when resize the window
responsive: true,
// Restore the cropped area after resize the window
restore: true,
// Check if the current image is a cross-origin image
checkCrossOrigin: true,
// Check the current image's Exif Orientation information
checkOrientation: true,
// Show the black modal
modal: true,
// Show the dashed lines for guiding
guides: true,
// Show the center indicator for guiding
center: true,
// Show the white modal to highlight the crop box
highlight: true,
// Show the grid background
background: true,
// Enable to crop the image automatically when initialize
autoCrop: true,
// Define the percentage of automatic cropping area when initializes
autoCropArea: 0.8,
// Enable to move the image
movable: true,
// Enable to rotate the image
rotatable: true,
// Enable to scale the image
scalable: true,
// Enable to zoom the image
zoomable: true,
// Enable to zoom the image by dragging touch
zoomOnTouch: true,
// Enable to zoom the image by wheeling mouse
zoomOnWheel: true,
// Define zoom ratio when zoom the image by wheeling mouse
wheelZoomRatio: 0.1,
// Enable to move the crop box
cropBoxMovable: true,
// Enable to resize the crop box
cropBoxResizable: true,
// Toggle drag mode between "crop" and "move" when click twice on the cropper
toggleDragModeOnDblclick: true,
// Size limitation
minCanvasWidth: 0,
minCanvasHeight: 0,
minCropBoxWidth: 0,
minCropBoxHeight: 0,
minContainerWidth: 200,
minContainerHeight: 100,
// Shortcuts of events
ready: null,
cropstart: null,
cropmove: null,
cropend: null,
crop: null,
zoom: null
};
main.js 代码如下：
$(function () {
'use strict';//表示强规则
var console = window.console || { log: function () {} };
var URL = window.URL || window.webkitURL;
var $image = $('#image');
var $download = $('#download');
//获取图片截取的位置
var $dataX = $('#dataX');
var $dataY = $('#dataY');
var $dataHeight = $('#dataHeight');
var $dataWidth = $('#dataWidth');
var $dataRotate = $('#dataRotate');
var $dataScaleX = $('#dataScaleX');
var $dataScaleY = $('#dataScaleY');
var options = {
aspectRatio: 1 / 1, //裁剪框比例1:1
preview: '.img-preview',
crop: function (e) {
$dataX.val(Math.round(e.x));
$dataY.val(Math.round(e.y));
$dataHeight.val(Math.round(e.height));
$dataWidth.val(Math.round(e.width));
$dataRotate.val(e.rotate);
$dataScaleX.val(e.scaleX);
$dataScaleY.val(e.scaleY);
}
};
var originalImageURL = $image.attr('src');
var uploadedImageURL;
// Tooltip
$('[data-toggle="tooltip"]').tooltip();
// Cropper
$image.on({
ready: function (e) {
console.log(e.type);
},
cropstart: function (e) {
console.log(e.type, e.action);
},
cropmove: function (e) {
console.log(e.type, e.action);
},
cropend: function (e) {
console.log(e.type, e.action);
},
crop: function (e) {
console.log(e.type, e.x, e.y, e.width, e.height, e.rotate, e.scaleX, e.scaleY);
},
zoom: function (e) {
console.log(e.type, e.ratio);
}
}).cropper(options);
// Buttons
if (!$.isFunction(document.createElement('canvas').getContext)) {
$('button[data-method="getCroppedCanvas"]').prop('disabled', true);
}
if (typeof document.createElement('cropper').style.transition === 'undefined') {
$('button[data-method="rotate"]').prop('disabled', true);
$('button[data-method="scale"]').prop('disabled', true);
}
// Download
if (typeof $download[0].download === 'undefined') {
$download.addClass('disabled');
}
// Options
$('.docs-toggles').on('change', 'input', function () {
var $this = $(this);
var name = $this.attr('name');
var type = $this.prop('type');
var cropBoxData;
var canvasData;
if (!$image.data('cropper')) {
return;
}
if (type === 'checkbox') {
options[name] = $this.prop('checked');
cropBoxData = $image.cropper('getCropBoxData');
canvasData = $image.cropper('getCanvasData');
options.ready = function () {
$image.cropper('setCropBoxData', cropBoxData);
$image.cropper('setCanvasData', canvasData);
};
} else if (type === 'radio') {
options[name] = $this.val();
}
$image.cropper('destroy').cropper(options);
});
// Methods
// 点击开始计算图片位置，获取位置
$('.docs-buttons').on('click', '[data-method]', function () {
var $this = $(this);
var data = $this.data();
var $target;
var result;
if ($this.prop('disabled') || $this.hasClass('disabled')) {
return;
}
if ($image.data('cropper') && data.method) {
data = $.extend({}, data); // Clone a new one
if (typeof data.target !== 'undefined') {
$target = $(data.target);
if (typeof data.option === 'undefined') {
try {
data.option = JSON.parse($target.val());
} catch (e) {
console.log(e.message);
}
}
}
if (data.method === 'rotate') {
$image.cropper('clear');
}
result = $image.cropper(data.method, data.option, data.secondOption);
if (data.method === 'rotate') {
$image.cropper('crop');
}
switch (data.method) {
case 'scaleX':
case 'scaleY':
$(this).data('option', -data.option);
break;
case 'getCroppedCanvas':
//上传头像
if (result) {
var imgBase=result.toDataURL('image/jpeg');
var data={imgBase:imgBase};
$.post('/docs/upload.php',data,function(ret){
if(ret=='true'){
alert('上传成功');
}else{
alert('上传失败');
}
},'text');
}
break;
case 'destroy':
if (uploadedImageURL) {
URL.revokeObjectURL(uploadedImageURL);
uploadedImageURL = '';
$image.attr('src', originalImageURL);
}
break;
}
if ($.isPlainObject(result) && $target) {
try {
$target.val(JSON.stringify(result));
} catch (e) {
console.log(e.message);
}
}
}
});
// Keyboard
$(document.body).on('keydown', function (e) {
if (!$image.data('cropper') || this.scrollTop > 300) {
return;
}
switch (e.which) {
case 37:
e.preventDefault();
$image.cropper('move', -1, 0);
break;
case 38:
e.preventDefault();
$image.cropper('move', 0, -1);
break;
case 39:
e.preventDefault();
$image.cropper('move', 1, 0);
break;
case 40:
e.preventDefault();
$image.cropper('move', 0, 1);
break;
}
});
// Import image
var $inputImage = $('#inputImage');
if (URL) {
$inputImage.change(function () {
var files = this.files;
var file;
if (!$image.data('cropper')) {
return;
}
if (files && files.length) {
file = files[0];
if (/^image\/\w+$/.test(file.type)) {
if (uploadedImageURL) {
URL.revokeObjectURL(uploadedImageURL);
}
uploadedImageURL = URL.createObjectURL(file);
$image.cropper('destroy').attr('src', uploadedImageURL).cropper(options);
$inputImage.val('');
} else {
window.alert('Please choose an image file.');
}
}
});
} else {
$inputImage.prop('disabled', true).parent().addClass('disabled');
}
});
