MINI Sh3ll
/*!
* Cropper v2.3.1
* https://github.com/fengyuanchen/cropper
*
* Copyright (c) 2014-2016 Fengyuan Chen and contributors
* Released under the MIT license
*
* Date: 2016-05-28T14:47:08.528Z
*/
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as anonymous module.
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// Node / CommonJS
factory(require('jquery'));
} else {
// Browser globals.
factory(jQuery);
}
})(function ($) {
'use strict';
// Globals
var $window = $(window);
var $document = $(document);
var location = window.location;
var navigator = window.navigator;
var ArrayBuffer = window.ArrayBuffer;
var Uint8Array = window.Uint8Array;
var DataView = window.DataView;
var btoa = window.btoa;
// Constants
var NAMESPACE = 'cropper';
// Classes
var CLASS_MODAL = 'cropper-modal';
var CLASS_HIDE = 'cropper-hide';
var CLASS_HIDDEN = 'cropper-hidden';
var CLASS_INVISIBLE = 'cropper-invisible';
var CLASS_MOVE = 'cropper-move';
var CLASS_CROP = 'cropper-crop';
var CLASS_DISABLED = 'cropper-disabled';
var CLASS_BG = 'cropper-bg';
// Events
var EVENT_MOUSE_DOWN = 'mousedown touchstart pointerdown MSPointerDown';
var EVENT_MOUSE_MOVE = 'mousemove touchmove pointermove MSPointerMove';
var EVENT_MOUSE_UP = 'mouseup touchend touchcancel pointerup pointercancel MSPointerUp MSPointerCancel';
var EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';
var EVENT_DBLCLICK = 'dblclick';
var EVENT_LOAD = 'load.' + NAMESPACE;
var EVENT_ERROR = 'error.' + NAMESPACE;
var EVENT_RESIZE = 'resize.' + NAMESPACE; // Bind to window with namespace
var EVENT_BUILD = 'build.' + NAMESPACE;
var EVENT_BUILT = 'built.' + NAMESPACE;
var EVENT_CROP_START = 'cropstart.' + NAMESPACE;
var EVENT_CROP_MOVE = 'cropmove.' + NAMESPACE;
var EVENT_CROP_END = 'cropend.' + NAMESPACE;
var EVENT_CROP = 'crop.' + NAMESPACE;
var EVENT_ZOOM = 'zoom.' + NAMESPACE;
// RegExps
var REGEXP_ACTIONS = /e|w|s|n|se|sw|ne|nw|all|crop|move|zoom/;
var REGEXP_DATA_URL = /^data\:/;
var REGEXP_DATA_URL_HEAD = /^data\:([^\;]+)\;base64,/;
var REGEXP_DATA_URL_JPEG = /^data\:image\/jpeg.*;base64,/;
// Data keys
var DATA_PREVIEW = 'preview';
var DATA_ACTION = 'action';
// Actions
var ACTION_EAST = 'e';
var ACTION_WEST = 'w';
var ACTION_SOUTH = 's';
var ACTION_NORTH = 'n';
var ACTION_SOUTH_EAST = 'se';
var ACTION_SOUTH_WEST = 'sw';
var ACTION_NORTH_EAST = 'ne';
var ACTION_NORTH_WEST = 'nw';
var ACTION_ALL = 'all';
var ACTION_CROP = 'crop';
var ACTION_MOVE = 'move';
var ACTION_ZOOM = 'zoom';
var ACTION_NONE = 'none';
// Supports
var SUPPORT_CANVAS = $.isFunction($('<canvas>')[0].getContext);
var IS_SAFARI = navigator && /safari/i.test(navigator.userAgent) && /apple computer/i.test(navigator.vendor);
// Maths
var num = Number;
var min = Math.min;
var max = Math.max;
var abs = Math.abs;
var sin = Math.sin;
var cos = Math.cos;
var sqrt = Math.sqrt;
var round = Math.round;
var floor = Math.floor;
// Utilities
var fromCharCode = String.fromCharCode;
function isNumber(n) {
return typeof n === 'number' && !isNaN(n);
}
function isUndefined(n) {
return typeof n === 'undefined';
}
function toArray(obj, offset) {
var args = [];
// This is necessary for IE8
if (isNumber(offset)) {
args.push(offset);
}
return args.slice.apply(obj, args);
}
// Custom proxy to avoid jQuery's guid
function proxy(fn, context) {
var args = toArray(arguments, 2);
return function () {
return fn.apply(context, args.concat(toArray(arguments)));
};
}
function isCrossOriginURL(url) {
var parts = url.match(/^(https?:)\/\/([^\:\/\?#]+):?(\d*)/i);
return parts && (
parts[1] !== location.protocol ||
parts[2] !== location.hostname ||
parts[3] !== location.port
);
}
function addTimestamp(url) {
var timestamp = 'timestamp=' + (new Date()).getTime();
return (url + (url.indexOf('?') === -1 ? '?' : '&') + timestamp);
}
function getCrossOrigin(crossOrigin) {
return crossOrigin ? ' crossOrigin="' + crossOrigin + '"' : '';
}
function getImageSize(image, callback) {
var newImage;
// Modern browsers (ignore Safari, #120 & #509)
if (image.naturalWidth && !IS_SAFARI) {
return callback(image.naturalWidth, image.naturalHeight);
}
// IE8: Don't use `new Image()` here (#319)
newImage = document.createElement('img');
newImage.onload = function () {
callback(this.width, this.height);
};
newImage.src = image.src;
}
function getTransform(options) {
var transforms = [];
var rotate = options.rotate;
var scaleX = options.scaleX;
var scaleY = options.scaleY;
// Scale should come first before rotate (#633)
if (isNumber(scaleX) && isNumber(scaleY)) {
transforms.push('scale(' + scaleX + ',' + scaleY + ')');
}
if (isNumber(rotate)) {
transforms.push('rotate(' + rotate + 'deg)');
}
return transforms.length ? transforms.join(' ') : 'none';
}
function getRotatedSizes(data, isReversed) {
var deg = abs(data.degree) % 180;
var arc = (deg > 90 ? (180 - deg) : deg) * Math.PI / 180;
var sinArc = sin(arc);
var cosArc = cos(arc);
var width = data.width;
var height = data.height;
var aspectRatio = data.aspectRatio;
var newWidth;
var newHeight;
if (!isReversed) {
newWidth = width * cosArc + height * sinArc;
newHeight = width * sinArc + height * cosArc;
} else {
newWidth = width / (cosArc + sinArc / aspectRatio);
newHeight = newWidth / aspectRatio;
}
return {
width: newWidth,
height: newHeight
};
}
function getSourceCanvas(image, data) {
var canvas = $('<canvas>')[0];
var context = canvas.getContext('2d');
var dstX = 0;
var dstY = 0;
var dstWidth = data.naturalWidth;
var dstHeight = data.naturalHeight;
var rotate = data.rotate;
var scaleX = data.scaleX;
var scaleY = data.scaleY;
var scalable = isNumber(scaleX) && isNumber(scaleY) && (scaleX !== 1 || scaleY !== 1);
var rotatable = isNumber(rotate) && rotate !== 0;
var advanced = rotatable || scalable;
var canvasWidth = dstWidth * abs(scaleX || 1);
var canvasHeight = dstHeight * abs(scaleY || 1);
var translateX;
var translateY;
var rotated;
if (scalable) {
translateX = canvasWidth / 2;
translateY = canvasHeight / 2;
}
if (rotatable) {
rotated = getRotatedSizes({
width: canvasWidth,
height: canvasHeight,
degree: rotate
});
canvasWidth = rotated.width;
canvasHeight = rotated.height;
translateX = canvasWidth / 2;
translateY = canvasHeight / 2;
}
canvas.width = canvasWidth;
canvas.height = canvasHeight;
if (advanced) {
dstX = -dstWidth / 2;
dstY = -dstHeight / 2;
context.save();
context.translate(translateX, translateY);
}
if (rotatable) {
context.rotate(rotate * Math.PI / 180);
}
// Should call `scale` after rotated
if (scalable) {
context.scale(scaleX, scaleY);
}
context.drawImage(image, floor(dstX), floor(dstY), floor(dstWidth), floor(dstHeight));
if (advanced) {
context.restore();
}
return canvas;
}
function getTouchesCenter(touches) {
var length = touches.length;
var pageX = 0;
var pageY = 0;
if (length) {
$.each(touches, function (i, touch) {
pageX += touch.pageX;
pageY += touch.pageY;
});
pageX /= length;
pageY /= length;
}
return {
pageX: pageX,
pageY: pageY
};
}
function getStringFromCharCode(dataView, start, length) {
var str = '';
var i;
for (i = start, length += start; i < length; i++) {
str += fromCharCode(dataView.getUint8(i));
}
return str;
}
function getOrientation(arrayBuffer) {
var dataView = new DataView(arrayBuffer);
var length = dataView.byteLength;
var orientation;
var exifIDCode;
var tiffOffset;
var firstIFDOffset;
var littleEndian;
var endianness;
var app1Start;
var ifdStart;
var offset;
var i;
// Only handle JPEG image (start by 0xFFD8)
if (dataView.getUint8(0) === 0xFF && dataView.getUint8(1) === 0xD8) {
offset = 2;
while (offset < length) {
if (dataView.getUint8(offset) === 0xFF && dataView.getUint8(offset + 1) === 0xE1) {
app1Start = offset;
break;
}
offset++;
}
}
if (app1Start) {
exifIDCode = app1Start + 4;
tiffOffset = app1Start + 10;
if (getStringFromCharCode(dataView, exifIDCode, 4) === 'Exif') {
endianness = dataView.getUint16(tiffOffset);
littleEndian = endianness === 0x4949;
if (littleEndian || endianness === 0x4D4D /* bigEndian */) {
if (dataView.getUint16(tiffOffset + 2, littleEndian) === 0x002A) {
firstIFDOffset = dataView.getUint32(tiffOffset + 4, littleEndian);
if (firstIFDOffset >= 0x00000008) {
ifdStart = tiffOffset + firstIFDOffset;
}
}
}
}
}
if (ifdStart) {
length = dataView.getUint16(ifdStart, littleEndian);
for (i = 0; i < length; i++) {
offset = ifdStart + i * 12 + 2;
if (dataView.getUint16(offset, littleEndian) === 0x0112 /* Orientation */) {
// 8 is the offset of the current tag's value
offset += 8;
// Get the original orientation value
orientation = dataView.getUint16(offset, littleEndian);
// Override the orientation with its default value for Safari (#120)
if (IS_SAFARI) {
dataView.setUint16(offset, 1, littleEndian);
}
break;
}
}
}
return orientation;
}
function dataURLToArrayBuffer(dataURL) {
var base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, '');
var binary = atob(base64);
var length = binary.length;
var arrayBuffer = new ArrayBuffer(length);
var dataView = new Uint8Array(arrayBuffer);
var i;
for (i = 0; i < length; i++) {
dataView[i] = binary.charCodeAt(i);
}
return arrayBuffer;
}
// Only available for JPEG image
function arrayBufferToDataURL(arrayBuffer) {
var dataView = new Uint8Array(arrayBuffer);
var length = dataView.length;
var base64 = '';
var i;
for (i = 0; i < length; i++) {
base64 += fromCharCode(dataView[i]);
}
return 'data:image/jpeg;base64,' + btoa(base64);
}
function Cropper(element, options) {
this.$element = $(element);
this.options = $.extend({}, Cropper.DEFAULTS, $.isPlainObject(options) && options);
this.isLoaded = false;
this.isBuilt = false;
this.isCompleted = false;
this.isRotated = false;
this.isCropped = false;
this.isDisabled = false;
this.isReplaced = false;
this.isLimited = false;
this.wheeling = false;
this.isImg = false;
this.originalUrl = '';
this.canvas = null;
this.cropBox = null;
this.init();
}
Cropper.prototype = {
constructor: Cropper,
init: function () {
var $this = this.$element;
var url;
if ($this.is('img')) {
this.isImg = true;
// Should use `$.fn.attr` here. e.g.: "img/picture.jpg"
this.originalUrl = url = $this.attr('src');
// Stop when it's a blank image
if (!url) {
return;
}
// Should use `$.fn.prop` here. e.g.: "http://example.com/img/picture.jpg"
url = $this.prop('src');
} else if ($this.is('canvas') && SUPPORT_CANVAS) {
url = $this[0].toDataURL();
}
this.load(url);
},
// A shortcut for triggering custom events
trigger: function (type, data) {
var e = $.Event(type, data);
this.$element.trigger(e);
return e;
},
load: function (url) {
var options = this.options;
var $this = this.$element;
var read;
var xhr;
if (!url) {
return;
}
// Trigger build event first
$this.one(EVENT_BUILD, options.build);
if (this.trigger(EVENT_BUILD).isDefaultPrevented()) {
return;
}
this.url = url;
this.image = {};
if (!options.checkOrientation || !ArrayBuffer) {
return this.clone();
}
read = $.proxy(this.read, this);
// XMLHttpRequest disallows to open a Data URL in some browsers like IE11 and Safari
if (REGEXP_DATA_URL.test(url)) {
return REGEXP_DATA_URL_JPEG.test(url) ?
read(dataURLToArrayBuffer(url)) :
this.clone();
}
xhr = new XMLHttpRequest();
xhr.onerror = xhr.onabort = $.proxy(function () {
this.clone();
}, this);
xhr.onload = function () {
read(this.response);
};
if (options.checkCrossOrigin && isCrossOriginURL(url) && $this.prop('crossOrigin')) {
url = addTimestamp(url);
}
xhr.open('get', url);
xhr.responseType = 'arraybuffer';
xhr.send();
},
read: function (arrayBuffer) {
var options = this.options;
var orientation = getOrientation(arrayBuffer);
var image = this.image;
var rotate;
var scaleX;
var scaleY;
if (orientation > 1) {
this.url = arrayBufferToDataURL(arrayBuffer);
switch (orientation) {
// flip horizontal
case 2:
scaleX = -1;
break;
// rotate left 180°
case 3:
rotate = -180;
break;
// flip vertical
case 4:
scaleY = -1;
break;
// flip vertical + rotate right 90°
case 5:
rotate = 90;
scaleY = -1;
break;
// rotate right 90°
case 6:
rotate = 90;
break;
// flip horizontal + rotate right 90°
case 7:
rotate = 90;
scaleX = -1;
break;
// rotate left 90°
case 8:
rotate = -90;
break;
}
}
if (options.rotatable) {
image.rotate = rotate;
}
if (options.scalable) {
image.scaleX = scaleX;
image.scaleY = scaleY;
}
this.clone();
},
clone: function () {
var options = this.options;
var $this = this.$element;
var url = this.url;
var crossOrigin = '';
var crossOriginUrl;
var $clone;
if (options.checkCrossOrigin && isCrossOriginURL(url)) {
crossOrigin = $this.prop('crossOrigin');
if (crossOrigin) {
crossOriginUrl = url;
} else {
crossOrigin = 'anonymous';
// Bust cache (#148) when there is not a "crossOrigin" property
crossOriginUrl = addTimestamp(url);
}
}
this.crossOrigin = crossOrigin;
this.crossOriginUrl = crossOriginUrl;
this.$clone = $clone = $('<img' + getCrossOrigin(crossOrigin) + ' src="' + (crossOriginUrl || url) + '">');
if (this.isImg) {
if ($this[0].complete) {
this.start();
} else {
$this.one(EVENT_LOAD, $.proxy(this.start, this));
}
} else {
$clone.
one(EVENT_LOAD, $.proxy(this.start, this)).
one(EVENT_ERROR, $.proxy(this.stop, this)).
addClass(CLASS_HIDE).
insertAfter($this);
}
},
start: function () {
var $image = this.$element;
var $clone = this.$clone;
if (!this.isImg) {
$clone.off(EVENT_ERROR, this.stop);
$image = $clone;
}
getImageSize($image[0], $.proxy(function (naturalWidth, naturalHeight) {
$.extend(this.image, {
naturalWidth: naturalWidth,
naturalHeight: naturalHeight,
aspectRatio: naturalWidth / naturalHeight
});
this.isLoaded = true;
this.build();
}, this));
},
stop: function () {
this.$clone.remove();
this.$clone = null;
},
build: function () {
var options = this.options;
var $this = this.$element;
var $clone = this.$clone;
var $cropper;
var $cropBox;
var $face;
if (!this.isLoaded) {
return;
}
// Unbuild first when replace
if (this.isBuilt) {
this.unbuild();
}
// Create cropper elements
this.$container = $this.parent();
this.$cropper = $cropper = $(Cropper.TEMPLATE);
this.$canvas = $cropper.find('.cropper-canvas').append($clone);
this.$dragBox = $cropper.find('.cropper-drag-box');
this.$cropBox = $cropBox = $cropper.find('.cropper-crop-box');
this.$viewBox = $cropper.find('.cropper-view-box');
this.$face = $face = $cropBox.find('.cropper-face');
// Hide the original image
$this.addClass(CLASS_HIDDEN).after($cropper);
// Show the clone image if is hidden
if (!this.isImg) {
$clone.removeClass(CLASS_HIDE);
}
this.initPreview();
this.bind();
options.aspectRatio = max(0, options.aspectRatio) || NaN;
options.viewMode = max(0, min(3, round(options.viewMode))) || 0;
if (options.autoCrop) {
this.isCropped = true;
if (options.modal) {
this.$dragBox.addClass(CLASS_MODAL);
}
} else {
$cropBox.addClass(CLASS_HIDDEN);
}
if (!options.guides) {
$cropBox.find('.cropper-dashed').addClass(CLASS_HIDDEN);
}
if (!options.center) {
$cropBox.find('.cropper-center').addClass(CLASS_HIDDEN);
}
if (options.cropBoxMovable) {
$face.addClass(CLASS_MOVE).data(DATA_ACTION, ACTION_ALL);
}
if (!options.highlight) {
$face.addClass(CLASS_INVISIBLE);
}
if (options.background) {
$cropper.addClass(CLASS_BG);
}
if (!options.cropBoxResizable) {
$cropBox.find('.cropper-line, .cropper-point').addClass(CLASS_HIDDEN);
}
this.setDragMode(options.dragMode);
this.render();
this.isBuilt = true;
this.setData(options.data);
$this.one(EVENT_BUILT, options.built);
// Trigger the built event asynchronously to keep `data('cropper')` is defined
setTimeout($.proxy(function () {
this.trigger(EVENT_BUILT);
this.isCompleted = true;
}, this), 0);
},
unbuild: function () {
if (!this.isBuilt) {
return;
}
this.isBuilt = false;
this.isCompleted = false;
this.initialImage = null;
// Clear `initialCanvas` is necessary when replace
this.initialCanvas = null;
this.initialCropBox = null;
this.container = null;
this.canvas = null;
// Clear `cropBox` is necessary when replace
this.cropBox = null;
this.unbind();
this.resetPreview();
this.$preview = null;
this.$viewBox = null;
this.$cropBox = null;
this.$dragBox = null;
this.$canvas = null;
this.$container = null;
this.$cropper.remove();
this.$cropper = null;
},
render: function () {
this.initContainer();
this.initCanvas();
this.initCropBox();
this.renderCanvas();
if (this.isCropped) {
this.renderCropBox();
}
},
initContainer: function () {
var options = this.options;
var $this = this.$element;
var $container = this.$container;
var $cropper = this.$cropper;
$cropper.addClass(CLASS_HIDDEN);
$this.removeClass(CLASS_HIDDEN);
$cropper.css((this.container = {
width: max($container.width(), num(options.minContainerWidth) || 200),
height: max($container.height(), num(options.minContainerHeight) || 100)
}));
$this.addClass(CLASS_HIDDEN);
$cropper.removeClass(CLASS_HIDDEN);
},
// Canvas (image wrapper)
initCanvas: function () {
var viewMode = this.options.viewMode;
var container = this.container;
var containerWidth = container.width;
var containerHeight = container.height;
var image = this.image;
var imageNaturalWidth = image.naturalWidth;
var imageNaturalHeight = image.naturalHeight;
var is90Degree = abs(image.rotate) === 90;
var naturalWidth = is90Degree ? imageNaturalHeight : imageNaturalWidth;
var naturalHeight = is90Degree ? imageNaturalWidth : imageNaturalHeight;
var aspectRatio = naturalWidth / naturalHeight;
var canvasWidth = containerWidth;
var canvasHeight = containerHeight;
var canvas;
if (containerHeight * aspectRatio > containerWidth) {
if (viewMode === 3) {
canvasWidth = containerHeight * aspectRatio;
} else {
canvasHeight = containerWidth / aspectRatio;
}
} else {
if (viewMode === 3) {
canvasHeight = containerWidth / aspectRatio;
} else {
canvasWidth = containerHeight * aspectRatio;
}
}
canvas = {
naturalWidth: naturalWidth,
naturalHeight: naturalHeight,
aspectRatio: aspectRatio,
width: canvasWidth,
height: canvasHeight
};
canvas.oldLeft = canvas.left = (containerWidth - canvasWidth) / 2;
canvas.oldTop = canvas.top = (containerHeight - canvasHeight) / 2;
this.canvas = canvas;
this.isLimited = (viewMode === 1 || viewMode === 2);
this.limitCanvas(true, true);
this.initialImage = $.extend({}, image);
this.initialCanvas = $.extend({}, canvas);
},
limitCanvas: function (isSizeLimited, isPositionLimited) {
var options = this.options;
var viewMode = options.viewMode;
var container = this.container;
var containerWidth = container.width;
var containerHeight = container.height;
var canvas = this.canvas;
var aspectRatio = canvas.aspectRatio;
var cropBox = this.cropBox;
var isCropped = this.isCropped && cropBox;
var minCanvasWidth;
var minCanvasHeight;
var newCanvasLeft;
var newCanvasTop;
if (isSizeLimited) {
minCanvasWidth = num(options.minCanvasWidth) || 0;
minCanvasHeight = num(options.minCanvasHeight) || 0;
if (viewMode) {
if (viewMode > 1) {
minCanvasWidth = max(minCanvasWidth, containerWidth);
minCanvasHeight = max(minCanvasHeight, containerHeight);
if (viewMode === 3) {
if (minCanvasHeight * aspectRatio > minCanvasWidth) {
minCanvasWidth = minCanvasHeight * aspectRatio;
} else {
minCanvasHeight = minCanvasWidth / aspectRatio;
}
}
} else {
if (minCanvasWidth) {
minCanvasWidth = max(minCanvasWidth, isCropped ? cropBox.width : 0);
} else if (minCanvasHeight) {
minCanvasHeight = max(minCanvasHeight, isCropped ? cropBox.height : 0);
} else if (isCropped) {
minCanvasWidth = cropBox.width;
minCanvasHeight = cropBox.height;
if (minCanvasHeight * aspectRatio > minCanvasWidth) {
minCanvasWidth = minCanvasHeight * aspectRatio;
} else {
minCanvasHeight = minCanvasWidth / aspectRatio;
}
}
}
}
if (minCanvasWidth && minCanvasHeight) {
if (minCanvasHeight * aspectRatio > minCanvasWidth) {
minCanvasHeight = minCanvasWidth / aspectRatio;
} else {
minCanvasWidth = minCanvasHeight * aspectRatio;
}
} else if (minCanvasWidth) {
minCanvasHeight = minCanvasWidth / aspectRatio;
} else if (minCanvasHeight) {
minCanvasWidth = minCanvasHeight * aspectRatio;
}
canvas.minWidth = minCanvasWidth;
canvas.minHeight = minCanvasHeight;
canvas.maxWidth = Infinity;
canvas.maxHeight = Infinity;
}
if (isPositionLimited) {
if (viewMode) {
newCanvasLeft = containerWidth - canvas.width;
newCanvasTop = containerHeight - canvas.height;
canvas.minLeft = min(0, newCanvasLeft);
canvas.minTop = min(0, newCanvasTop);
canvas.maxLeft = max(0, newCanvasLeft);
canvas.maxTop = max(0, newCanvasTop);
if (isCropped && this.isLimited) {
canvas.minLeft = min(
cropBox.left,
cropBox.left + cropBox.width - canvas.width
);
canvas.minTop = min(
cropBox.top,
cropBox.top + cropBox.height - canvas.height
);
canvas.maxLeft = cropBox.left;
canvas.maxTop = cropBox.top;
if (viewMode === 2) {
if (canvas.width >= containerWidth) {
canvas.minLeft = min(0, newCanvasLeft);
canvas.maxLeft = max(0, newCanvasLeft);
}
if (canvas.height >= containerHeight) {
canvas.minTop = min(0, newCanvasTop);
canvas.maxTop = max(0, newCanvasTop);
}
}
}
} else {
canvas.minLeft = -canvas.width;
canvas.minTop = -canvas.height;
canvas.maxLeft = containerWidth;
canvas.maxTop = containerHeight;
}
}
},
renderCanvas: function (isChanged) {
var canvas = this.canvas;
var image = this.image;
var rotate = image.rotate;
var naturalWidth = image.naturalWidth;
var naturalHeight = image.naturalHeight;
var aspectRatio;
var rotated;
if (this.isRotated) {
this.isRotated = false;
// Computes rotated sizes with image sizes
rotated = getRotatedSizes({
width: image.width,
height: image.height,
degree: rotate
});
aspectRatio = rotated.width / rotated.height;
if (aspectRatio !== canvas.aspectRatio) {
canvas.left -= (rotated.width - canvas.width) / 2;
canvas.top -= (rotated.height - canvas.height) / 2;
canvas.width = rotated.width;
canvas.height = rotated.height;
canvas.aspectRatio = aspectRatio;
canvas.naturalWidth = naturalWidth;
canvas.naturalHeight = naturalHeight;
// Computes rotated sizes with natural image sizes
if (rotate % 180) {
rotated = getRotatedSizes({
width: naturalWidth,
height: naturalHeight,
degree: rotate
});
canvas.naturalWidth = rotated.width;
canvas.naturalHeight = rotated.height;
}
this.limitCanvas(true, false);
}
}
if (canvas.width > canvas.maxWidth || canvas.width < canvas.minWidth) {
canvas.left = canvas.oldLeft;
}
if (canvas.height > canvas.maxHeight || canvas.height < canvas.minHeight) {
canvas.top = canvas.oldTop;
}
canvas.width = min(max(canvas.width, canvas.minWidth), canvas.maxWidth);
canvas.height = min(max(canvas.height, canvas.minHeight), canvas.maxHeight);
this.limitCanvas(false, true);
canvas.oldLeft = canvas.left = min(max(canvas.left, canvas.minLeft), canvas.maxLeft);
canvas.oldTop = canvas.top = min(max(canvas.top, canvas.minTop), canvas.maxTop);
this.$canvas.css({
width: canvas.width,
height: canvas.height,
left: canvas.left,
top: canvas.top
});
this.renderImage();
if (this.isCropped && this.isLimited) {
this.limitCropBox(true, true);
}
if (isChanged) {
this.output();
}
},
renderImage: function (isChanged) {
var canvas = this.canvas;
var image = this.image;
var reversed;
if (image.rotate) {
reversed = getRotatedSizes({
width: canvas.width,
height: canvas.height,
degree: image.rotate,
aspectRatio: image.aspectRatio
}, true);
}
$.extend(image, reversed ? {
width: reversed.width,
height: reversed.height,
left: (canvas.width - reversed.width) / 2,
top: (canvas.height - reversed.height) / 2
} : {
width: canvas.width,
height: canvas.height,
left: 0,
top: 0
});
this.$clone.css({
width: image.width,
height: image.height,
marginLeft: image.left,
marginTop: image.top,
transform: getTransform(image)
});
if (isChanged) {
this.output();
}
},
initCropBox: function () {
var options = this.options;
var canvas = this.canvas;
var aspectRatio = options.aspectRatio;
var autoCropArea = num(options.autoCropArea) || 0.8;
var cropBox = {
width: canvas.width,
height: canvas.height
};
if (aspectRatio) {
if (canvas.height * aspectRatio > canvas.width) {
cropBox.height = cropBox.width / aspectRatio;
} else {
cropBox.width = cropBox.height * aspectRatio;
}
}
this.cropBox = cropBox;
this.limitCropBox(true, true);
// Initialize auto crop area
cropBox.width = min(max(cropBox.width, cropBox.minWidth), cropBox.maxWidth);
cropBox.height = min(max(cropBox.height, cropBox.minHeight), cropBox.maxHeight);
// The width of auto crop area must large than "minWidth", and the height too. (#164)
cropBox.width = max(cropBox.minWidth, cropBox.width * autoCropArea);
cropBox.height = max(cropBox.minHeight, cropBox.height * autoCropArea);
cropBox.oldLeft = cropBox.left = canvas.left + (canvas.width - cropBox.width) / 2;
cropBox.oldTop = cropBox.top = canvas.top + (canvas.height - cropBox.height) / 2;
this.initialCropBox = $.extend({}, cropBox);
},
limitCropBox: function (isSizeLimited, isPositionLimited) {
var options = this.options;
var aspectRatio = options.aspectRatio;
var container = this.container;
var containerWidth = container.width;
var containerHeight = container.height;
var canvas = this.canvas;
var cropBox = this.cropBox;
var isLimited = this.isLimited;
var minCropBoxWidth;
var minCropBoxHeight;
var maxCropBoxWidth;
var maxCropBoxHeight;
if (isSizeLimited) {
minCropBoxWidth = num(options.minCropBoxWidth) || 0;
minCropBoxHeight = num(options.minCropBoxHeight) || 0;
// The min/maxCropBoxWidth/Height must be less than containerWidth/Height
minCropBoxWidth = min(minCropBoxWidth, containerWidth);
minCropBoxHeight = min(minCropBoxHeight, containerHeight);
maxCropBoxWidth = min(containerWidth, isLimited ? canvas.width : containerWidth);
maxCropBoxHeight = min(containerHeight, isLimited ? canvas.height : containerHeight);
if (aspectRatio) {
if (minCropBoxWidth && minCropBoxHeight) {
if (minCropBoxHeight * aspectRatio > minCropBoxWidth) {
minCropBoxHeight = minCropBoxWidth / aspectRatio;
} else {
minCropBoxWidth = minCropBoxHeight * aspectRatio;
}
} else if (minCropBoxWidth) {
minCropBoxHeight = minCropBoxWidth / aspectRatio;
} else if (minCropBoxHeight) {
minCropBoxWidth = minCropBoxHeight * aspectRatio;
}
if (maxCropBoxHeight * aspectRatio > maxCropBoxWidth) {
maxCropBoxHeight = maxCropBoxWidth / aspectRatio;
} else {
maxCropBoxWidth = maxCropBoxHeight * aspectRatio;
}
}
// The minWidth/Height must be less than maxWidth/Height
cropBox.minWidth = min(minCropBoxWidth, maxCropBoxWidth);
cropBox.minHeight = min(minCropBoxHeight, maxCropBoxHeight);
cropBox.maxWidth = maxCropBoxWidth;
cropBox.maxHeight = maxCropBoxHeight;
}
if (isPositionLimited) {
if (isLimited) {
cropBox.minLeft = max(0, canvas.left);
cropBox.minTop = max(0, canvas.top);
cropBox.maxLeft = min(containerWidth, canvas.left + canvas.width) - cropBox.width;
cropBox.maxTop = min(containerHeight, canvas.top + canvas.height) - cropBox.height;
} else {
cropBox.minLeft = 0;
cropBox.minTop = 0;
cropBox.maxLeft = containerWidth - cropBox.width;
cropBox.maxTop = containerHeight - cropBox.height;
}
}
},
renderCropBox: function () {
var options = this.options;
var container = this.container;
var containerWidth = container.width;
var containerHeight = container.height;
var cropBox = this.cropBox;
if (cropBox.width > cropBox.maxWidth || cropBox.width < cropBox.minWidth) {
cropBox.left = cropBox.oldLeft;
}
if (cropBox.height > cropBox.maxHeight || cropBox.height < cropBox.minHeight) {
cropBox.top = cropBox.oldTop;
}
cropBox.width = min(max(cropBox.width, cropBox.minWidth), cropBox.maxWidth);
cropBox.height = min(max(cropBox.height, cropBox.minHeight), cropBox.maxHeight);
this.limitCropBox(false, true);
cropBox.oldLeft = cropBox.left = min(max(cropBox.left, cropBox.minLeft), cropBox.maxLeft);
cropBox.oldTop = cropBox.top = min(max(cropBox.top, cropBox.minTop), cropBox.maxTop);
if (options.movable && options.cropBoxMovable) {
// Turn to move the canvas when the crop box is equal to the container
this.$face.data(DATA_ACTION, (cropBox.width === containerWidth && cropBox.height === containerHeight) ? ACTION_MOVE : ACTION_ALL);
}
this.$cropBox.css({
width: cropBox.width,
height: cropBox.height,
left: cropBox.left,
top: cropBox.top
});
if (this.isCropped && this.isLimited) {
this.limitCanvas(true, true);
}
if (!this.isDisabled) {
this.output();
}
},
output: function () {
this.preview();
if (this.isCompleted) {
this.trigger(EVENT_CROP, this.getData());
} else if (!this.isBuilt) {
// Only trigger one crop event before complete
this.$element.one(EVENT_BUILT, $.proxy(function () {
this.trigger(EVENT_CROP, this.getData());
}, this));
}
},
initPreview: function () {
var crossOrigin = getCrossOrigin(this.crossOrigin);
var url = crossOrigin ? this.crossOriginUrl : this.url;
var $clone2;
this.$preview = $(this.options.preview);
this.$clone2 = $clone2 = $('<img' + crossOrigin + ' src="' + url + '">');
this.$viewBox.html($clone2);
this.$preview.each(function () {
var $this = $(this);
// Save the original size for recover
$this.data(DATA_PREVIEW, {
width: $this.width(),
height: $this.height(),
html: $this.html()
});
/**
* Override img element styles
* Add `display:block` to avoid margin top issue
* (Occur only when margin-top <= -height)
*/
$this.html(
'<img' + crossOrigin + ' src="' + url + '" style="' +
'display:block;width:100%;height:auto;' +
'min-width:0!important;min-height:0!important;' +
'max-width:none!important;max-height:none!important;' +
'image-orientation:0deg!important;">'
);
});
},
resetPreview: function () {
this.$preview.each(function () {
var $this = $(this);
var data = $this.data(DATA_PREVIEW);
$this.css({
width: data.width,
height: data.height
}).html(data.html).removeData(DATA_PREVIEW);
});
},
preview: function () {
var image = this.image;
var canvas = this.canvas;
var cropBox = this.cropBox;
var cropBoxWidth = cropBox.width;
var cropBoxHeight = cropBox.height;
var width = image.width;
var height = image.height;
var left = cropBox.left - canvas.left - image.left;
var top = cropBox.top - canvas.top - image.top;
if (!this.isCropped || this.isDisabled) {
return;
}
this.$clone2.css({
width: width,
height: height,
marginLeft: -left,
marginTop: -top,
transform: getTransform(image)
});
this.$preview.each(function () {
var $this = $(this);
var data = $this.data(DATA_PREVIEW);
var originalWidth = data.width;
var originalHeight = data.height;
var newWidth = originalWidth;
var newHeight = originalHeight;
var ratio = 1;
if (cropBoxWidth) {
ratio = originalWidth / cropBoxWidth;
newHeight = cropBoxHeight * ratio;
}
if (cropBoxHeight && newHeight > originalHeight) {
ratio = originalHeight / cropBoxHeight;
newWidth = cropBoxWidth * ratio;
newHeight = originalHeight;
}
$this.css({
width: newWidth,
height: newHeight
}).find('img').css({
width: width * ratio,
height: height * ratio,
marginLeft: -left * ratio,
marginTop: -top * ratio,
transform: getTransform(image)
});
});
},
bind: function () {
var options = this.options;
var $this = this.$element;
var $cropper = this.$cropper;
if ($.isFunction(options.cropstart)) {
$this.on(EVENT_CROP_START, options.cropstart);
}
if ($.isFunction(options.cropmove)) {
$this.on(EVENT_CROP_MOVE, options.cropmove);
}
if ($.isFunction(options.cropend)) {
$this.on(EVENT_CROP_END, options.cropend);
}
if ($.isFunction(options.crop)) {
$this.on(EVENT_CROP, options.crop);
}
if ($.isFunction(options.zoom)) {
$this.on(EVENT_ZOOM, options.zoom);
}
$cropper.on(EVENT_MOUSE_DOWN, $.proxy(this.cropStart, this));
if (options.zoomable && options.zoomOnWheel) {
$cropper.on(EVENT_WHEEL, $.proxy(this.wheel, this));
}
if (options.toggleDragModeOnDblclick) {
$cropper.on(EVENT_DBLCLICK, $.proxy(this.dblclick, this));
}
$document.
on(EVENT_MOUSE_MOVE, (this._cropMove = proxy(this.cropMove, this))).
on(EVENT_MOUSE_UP, (this._cropEnd = proxy(this.cropEnd, this)));
if (options.responsive) {
$window.on(EVENT_RESIZE, (this._resize = proxy(this.resize, this)));
}
},
unbind: function () {
var options = this.options;
var $this = this.$element;
var $cropper = this.$cropper;
if ($.isFunction(options.cropstart)) {
$this.off(EVENT_CROP_START, options.cropstart);
}
if ($.isFunction(options.cropmove)) {
$this.off(EVENT_CROP_MOVE, options.cropmove);
}
if ($.isFunction(options.cropend)) {
$this.off(EVENT_CROP_END, options.cropend);
}
if ($.isFunction(options.crop)) {
$this.off(EVENT_CROP, options.crop);
}
if ($.isFunction(options.zoom)) {
$this.off(EVENT_ZOOM, options.zoom);
}
$cropper.off(EVENT_MOUSE_DOWN, this.cropStart);
if (options.zoomable && options.zoomOnWheel) {
$cropper.off(EVENT_WHEEL, this.wheel);
}
if (options.toggleDragModeOnDblclick) {
$cropper.off(EVENT_DBLCLICK, this.dblclick);
}
$document.
off(EVENT_MOUSE_MOVE, this._cropMove).
off(EVENT_MOUSE_UP, this._cropEnd);
if (options.responsive) {
$window.off(EVENT_RESIZE, this._resize);
}
},
resize: function () {
var restore = this.options.restore;
var $container = this.$container;
var container = this.container;
var canvasData;
var cropBoxData;
var ratio;
// Check `container` is necessary for IE8
if (this.isDisabled || !container) {
return;
}
ratio = $container.width() / container.width;
// Resize when width changed or height changed
if (ratio !== 1 || $container.height() !== container.height) {
if (restore) {
canvasData = this.getCanvasData();
cropBoxData = this.getCropBoxData();
}
this.render();
if (restore) {
this.setCanvasData($.each(canvasData, function (i, n) {
canvasData[i] = n * ratio;
}));
this.setCropBoxData($.each(cropBoxData, function (i, n) {
cropBoxData[i] = n * ratio;
}));
}
}
},
dblclick: function () {
if (this.isDisabled) {
return;
}
if (this.$dragBox.hasClass(CLASS_CROP)) {
this.setDragMode(ACTION_MOVE);
} else {
this.setDragMode(ACTION_CROP);
}
},
wheel: function (event) {
var e = event.originalEvent || event;
var ratio = num(this.options.wheelZoomRatio) || 0.1;
var delta = 1;
if (this.isDisabled) {
return;
}
event.preventDefault();
// Limit wheel speed to prevent zoom too fast
if (this.wheeling) {
return;
}
this.wheeling = true;
setTimeout($.proxy(function () {
this.wheeling = false;
}, this), 50);
if (e.deltaY) {
delta = e.deltaY > 0 ? 1 : -1;
} else if (e.wheelDelta) {
delta = -e.wheelDelta / 120;
} else if (e.detail) {
delta = e.detail > 0 ? 1 : -1;
}
this.zoom(-delta * ratio, event);
},
cropStart: function (event) {
var options = this.options;
var originalEvent = event.originalEvent;
var touches = originalEvent && originalEvent.touches;
var e = event;
var touchesLength;
var action;
if (this.isDisabled) {
return;
}
if (touches) {
touchesLength = touches.length;
if (touchesLength > 1) {
if (options.zoomable && options.zoomOnTouch && touchesLength === 2) {
e = touches[1];
this.startX2 = e.pageX;
this.startY2 = e.pageY;
action = ACTION_ZOOM;
} else {
return;
}
}
e = touches[0];
}
action = action || $(e.target).data(DATA_ACTION);
if (REGEXP_ACTIONS.test(action)) {
if (this.trigger(EVENT_CROP_START, {
originalEvent: originalEvent,
action: action
}).isDefaultPrevented()) {
return;
}
event.preventDefault();
this.action = action;
this.cropping = false;
// IE8 has `event.pageX/Y`, but not `event.originalEvent.pageX/Y`
// IE10 has `event.originalEvent.pageX/Y`, but not `event.pageX/Y`
this.startX = e.pageX || originalEvent && originalEvent.pageX;
this.startY = e.pageY || originalEvent && originalEvent.pageY;
if (action === ACTION_CROP) {
this.cropping = true;
this.$dragBox.addClass(CLASS_MODAL);
}
}
},
cropMove: function (event) {
var options = this.options;
var originalEvent = event.originalEvent;
var touches = originalEvent && originalEvent.touches;
var e = event;
var action = this.action;
var touchesLength;
if (this.isDisabled) {
return;
}
if (touches) {
touchesLength = touches.length;
if (touchesLength > 1) {
if (options.zoomable && options.zoomOnTouch && touchesLength === 2) {
e = touches[1];
this.endX2 = e.pageX;
this.endY2 = e.pageY;
} else {
return;
}
}
e = touches[0];
}
if (action) {
if (this.trigger(EVENT_CROP_MOVE, {
originalEvent: originalEvent,
action: action
}).isDefaultPrevented()) {
return;
}
event.preventDefault();
this.endX = e.pageX || originalEvent && originalEvent.pageX;
this.endY = e.pageY || originalEvent && originalEvent.pageY;
this.change(e.shiftKey, action === ACTION_ZOOM ? event : null);
}
},
cropEnd: function (event) {
var originalEvent = event.originalEvent;
var action = this.action;
if (this.isDisabled) {
return;
}
if (action) {
event.preventDefault();
if (this.cropping) {
this.cropping = false;
this.$dragBox.toggleClass(CLASS_MODAL, this.isCropped && this.options.modal);
}
this.action = '';
this.trigger(EVENT_CROP_END, {
originalEvent: originalEvent,
action: action
});
}
},
change: function (shiftKey, event) {
var options = this.options;
var aspectRatio = options.aspectRatio;
var action = this.action;
var container = this.container;
var canvas = this.canvas;
var cropBox = this.cropBox;
var width = cropBox.width;
var height = cropBox.height;
var left = cropBox.left;
var top = cropBox.top;
var right = left + width;
var bottom = top + height;
var minLeft = 0;
var minTop = 0;
var maxWidth = container.width;
var maxHeight = container.height;
var renderable = true;
var offset;
var range;
// Locking aspect ratio in "free mode" by holding shift key (#259)
if (!aspectRatio && shiftKey) {
aspectRatio = width && height ? width / height : 1;
}
if (this.limited) {
minLeft = cropBox.minLeft;
minTop = cropBox.minTop;
maxWidth = minLeft + min(container.width, canvas.left + canvas.width);
maxHeight = minTop + min(container.height, canvas.top + canvas.height);
}
range = {
x: this.endX - this.startX,
y: this.endY - this.startY
};
if (aspectRatio) {
range.X = range.y * aspectRatio;
range.Y = range.x / aspectRatio;
}
switch (action) {
// Move crop box
case ACTION_ALL:
left += range.x;
top += range.y;
break;
// Resize crop box
case ACTION_EAST:
if (range.x >= 0 && (right >= maxWidth || aspectRatio &&
(top <= minTop || bottom >= maxHeight))) {
renderable = false;
break;
}
width += range.x;
if (aspectRatio) {
height = width / aspectRatio;
top -= range.Y / 2;
}
if (width < 0) {
action = ACTION_WEST;
width = 0;
}
break;
case ACTION_NORTH:
if (range.y <= 0 && (top <= minTop || aspectRatio &&
(left <= minLeft || right >= maxWidth))) {
renderable = false;
break;
}
height -= range.y;
top += range.y;
if (aspectRatio) {
width = height * aspectRatio;
left += range.X / 2;
}
if (height < 0) {
action = ACTION_SOUTH;
height = 0;
}
break;
case ACTION_WEST:
if (range.x <= 0 && (left <= minLeft || aspectRatio &&
(top <= minTop || bottom >= maxHeight))) {
renderable = false;
break;
}
width -= range.x;
left += range.x;
if (aspectRatio) {
height = width / aspectRatio;
top += range.Y / 2;
}
if (width < 0) {
action = ACTION_EAST;
width = 0;
}
break;
case ACTION_SOUTH:
if (range.y >= 0 && (bottom >= maxHeight || aspectRatio &&
(left <= minLeft || right >= maxWidth))) {
renderable = false;
break;
}
height += range.y;
if (aspectRatio) {
width = height * aspectRatio;
left -= range.X / 2;
}
if (height < 0) {
action = ACTION_NORTH;
height = 0;
}
break;
case ACTION_NORTH_EAST:
if (aspectRatio) {
if (range.y <= 0 && (top <= minTop || right >= maxWidth)) {
renderable = false;
break;
}
height -= range.y;
top += range.y;
width = height * aspectRatio;
} else {
if (range.x >= 0) {
if (right < maxWidth) {
width += range.x;
} else if (range.y <= 0 && top <= minTop) {
renderable = false;
}
} else {
width += range.x;
}
if (range.y <= 0) {
if (top > minTop) {
height -= range.y;
top += range.y;
}
} else {
height -= range.y;
top += range.y;
}
}
if (width < 0 && height < 0) {
action = ACTION_SOUTH_WEST;
height = 0;
width = 0;
} else if (width < 0) {
action = ACTION_NORTH_WEST;
width = 0;
} else if (height < 0) {
action = ACTION_SOUTH_EAST;
height = 0;
}
break;
case ACTION_NORTH_WEST:
if (aspectRatio) {
if (range.y <= 0 && (top <= minTop || left <= minLeft)) {
renderable = false;
break;
}
height -= range.y;
top += range.y;
width = height * aspectRatio;
left += range.X;
} else {
if (range.x <= 0) {
if (left > minLeft) {
width -= range.x;
left += range.x;
} else if (range.y <= 0 && top <= minTop) {
renderable = false;
}
} else {
width -= range.x;
left += range.x;
}
if (range.y <= 0) {
if (top > minTop) {
height -= range.y;
top += range.y;
}
} else {
height -= range.y;
top += range.y;
}
}
if (width < 0 && height < 0) {
action = ACTION_SOUTH_EAST;
height = 0;
width = 0;
} else if (width < 0) {
action = ACTION_NORTH_EAST;
width = 0;
} else if (height < 0) {
action = ACTION_SOUTH_WEST;
height = 0;
}
break;
case ACTION_SOUTH_WEST:
if (aspectRatio) {
if (range.x <= 0 && (left <= minLeft || bottom >= maxHeight)) {
renderable = false;
break;
}
width -= range.x;
left += range.x;
height = width / aspectRatio;
} else {
if (range.x <= 0) {
if (left > minLeft) {
width -= range.x;
left += range.x;
} else if (range.y >= 0 && bottom >= maxHeight) {
renderable = false;
}
} else {
width -= range.x;
left += range.x;
}
if (range.y >= 0) {
if (bottom < maxHeight) {
height += range.y;
}
} else {
height += range.y;
}
}
if (width < 0 && height < 0) {
action = ACTION_NORTH_EAST;
height = 0;
width = 0;
} else if (width < 0) {
action = ACTION_SOUTH_EAST;
width = 0;
} else if (height < 0) {
action = ACTION_NORTH_WEST;
height = 0;
}
break;
case ACTION_SOUTH_EAST:
if (aspectRatio) {
if (range.x >= 0 && (right >= maxWidth || bottom >= maxHeight)) {
renderable = false;
break;
}
width += range.x;
height = width / aspectRatio;
} else {
if (range.x >= 0) {
if (right < maxWidth) {
width += range.x;
} else if (range.y >= 0 && bottom >= maxHeight) {
renderable = false;
}
} else {
width += range.x;
}
if (range.y >= 0) {
if (bottom < maxHeight) {
height += range.y;
}
} else {
height += range.y;
}
}
if (width < 0 && height < 0) {
action = ACTION_NORTH_WEST;
height = 0;
width = 0;
} else if (width < 0) {
action = ACTION_SOUTH_WEST;
width = 0;
} else if (height < 0) {
action = ACTION_NORTH_EAST;
height = 0;
}
break;
// Move canvas
case ACTION_MOVE:
this.move(range.x, range.y);
renderable = false;
break;
// Zoom canvas
case ACTION_ZOOM:
this.zoom((function (x1, y1, x2, y2) {
var z1 = sqrt(x1 * x1 + y1 * y1);
var z2 = sqrt(x2 * x2 + y2 * y2);
return (z2 - z1) / z1;
})(
abs(this.startX - this.startX2),
abs(this.startY - this.startY2),
abs(this.endX - this.endX2),
abs(this.endY - this.endY2)
), event);
this.startX2 = this.endX2;
this.startY2 = this.endY2;
renderable = false;
break;
// Create crop box
case ACTION_CROP:
if (!range.x || !range.y) {
renderable = false;
break;
}
offset = this.$cropper.offset();
left = this.startX - offset.left;
top = this.startY - offset.top;
width = cropBox.minWidth;
height = cropBox.minHeight;
if (range.x > 0) {
action = range.y > 0 ? ACTION_SOUTH_EAST : ACTION_NORTH_EAST;
} else if (range.x < 0) {
left -= width;
action = range.y > 0 ? ACTION_SOUTH_WEST : ACTION_NORTH_WEST;
}
if (range.y < 0) {
top -= height;
}
// Show the crop box if is hidden
if (!this.isCropped) {
this.$cropBox.removeClass(CLASS_HIDDEN);
this.isCropped = true;
if (this.limited) {
this.limitCropBox(true, true);
}
}
break;
// No default
}
if (renderable) {
cropBox.width = width;
cropBox.height = height;
cropBox.left = left;
cropBox.top = top;
this.action = action;
this.renderCropBox();
}
// Override
this.startX = this.endX;
this.startY = this.endY;
},
// Show the crop box manually
crop: function () {
if (!this.isBuilt || this.isDisabled) {
return;
}
if (!this.isCropped) {
this.isCropped = true;
this.limitCropBox(true, true);
if (this.options.modal) {
this.$dragBox.addClass(CLASS_MODAL);
}
this.$cropBox.removeClass(CLASS_HIDDEN);
}
this.setCropBoxData(this.initialCropBox);
},
// Reset the image and crop box to their initial states
reset: function () {
if (!this.isBuilt || this.isDisabled) {
return;
}
this.image = $.extend({}, this.initialImage);
this.canvas = $.extend({}, this.initialCanvas);
this.cropBox = $.extend({}, this.initialCropBox);
this.renderCanvas();
if (this.isCropped) {
this.renderCropBox();
}
},
// Clear the crop box
clear: function () {
if (!this.isCropped || this.isDisabled) {
return;
}
$.extend(this.cropBox, {
left: 0,
top: 0,
width: 0,
height: 0
});
this.isCropped = false;
this.renderCropBox();
this.limitCanvas(true, true);
// Render canvas after crop box rendered
this.renderCanvas();
this.$dragBox.removeClass(CLASS_MODAL);
this.$cropBox.addClass(CLASS_HIDDEN);
},
/**
* Replace the image's src and rebuild the cropper
*
* @param {String} url
* @param {Boolean} onlyColorChanged (optional)
*/
replace: function (url, onlyColorChanged) {
if (!this.isDisabled && url) {
if (this.isImg) {
this.$element.attr('src', url);
}
if (onlyColorChanged) {
this.url = url;
this.$clone.attr('src', url);
if (this.isBuilt) {
this.$preview.find('img').add(this.$clone2).attr('src', url);
}
} else {
if (this.isImg) {
this.isReplaced = true;
}
// Clear previous data
this.options.data = null;
this.load(url);
}
}
},
// Enable (unfreeze) the cropper
enable: function () {
if (this.isBuilt) {
this.isDisabled = false;
this.$cropper.removeClass(CLASS_DISABLED);
}
},
// Disable (freeze) the cropper
disable: function () {
if (this.isBuilt) {
this.isDisabled = true;
this.$cropper.addClass(CLASS_DISABLED);
}
},
// Destroy the cropper and remove the instance from the image
destroy: function () {
var $this = this.$element;
if (this.isLoaded) {
if (this.isImg && this.isReplaced) {
$this.attr('src', this.originalUrl);
}
this.unbuild();
$this.removeClass(CLASS_HIDDEN);
} else {
if (this.isImg) {
$this.off(EVENT_LOAD, this.start);
} else if (this.$clone) {
this.$clone.remove();
}
}
$this.removeData(NAMESPACE);
},
/**
* Move the canvas with relative offsets
*
* @param {Number} offsetX
* @param {Number} offsetY (optional)
*/
move: function (offsetX, offsetY) {
var canvas = this.canvas;
this.moveTo(
isUndefined(offsetX) ? offsetX : canvas.left + num(offsetX),
isUndefined(offsetY) ? offsetY : canvas.top + num(offsetY)
);
},
/**
* Move the canvas to an absolute point
*
* @param {Number} x
* @param {Number} y (optional)
*/
moveTo: function (x, y) {
var canvas = this.canvas;
var isChanged = false;
// If "y" is not present, its default value is "x"
if (isUndefined(y)) {
y = x;
}
x = num(x);
y = num(y);
if (this.isBuilt && !this.isDisabled && this.options.movable) {
if (isNumber(x)) {
canvas.left = x;
isChanged = true;
}
if (isNumber(y)) {
canvas.top = y;
isChanged = true;
}
if (isChanged) {
this.renderCanvas(true);
}
}
},
/**
* Zoom the canvas with a relative ratio
*
* @param {Number} ratio
* @param {jQuery Event} _event (private)
*/
zoom: function (ratio, _event) {
var canvas = this.canvas;
ratio = num(ratio);
if (ratio < 0) {
ratio = 1 / (1 - ratio);
} else {
ratio = 1 + ratio;
}
this.zoomTo(canvas.width * ratio / canvas.naturalWidth, _event);
},
/**
* Zoom the canvas to an absolute ratio
*
* @param {Number} ratio
* @param {jQuery Event} _event (private)
*/
zoomTo: function (ratio, _event) {
var options = this.options;
var canvas = this.canvas;
var width = canvas.width;
var height = canvas.height;
var naturalWidth = canvas.naturalWidth;
var naturalHeight = canvas.naturalHeight;
var originalEvent;
var newWidth;
var newHeight;
var offset;
var center;
ratio = num(ratio);
if (ratio >= 0 && this.isBuilt && !this.isDisabled && options.zoomable) {
newWidth = naturalWidth * ratio;
newHeight = naturalHeight * ratio;
if (_event) {
originalEvent = _event.originalEvent;
}
if (this.trigger(EVENT_ZOOM, {
originalEvent: originalEvent,
oldRatio: width / naturalWidth,
ratio: newWidth / naturalWidth
}).isDefaultPrevented()) {
return;
}
if (originalEvent) {
offset = this.$cropper.offset();
center = originalEvent.touches ? getTouchesCenter(originalEvent.touches) : {
pageX: _event.pageX || originalEvent.pageX || 0,
pageY: _event.pageY || originalEvent.pageY || 0
};
// Zoom from the triggering point of the event
canvas.left -= (newWidth - width) * (
((center.pageX - offset.left) - canvas.left) / width
);
canvas.top -= (newHeight - height) * (
((center.pageY - offset.top) - canvas.top) / height
);
} else {
// Zoom from the center of the canvas
canvas.left -= (newWidth - width) / 2;
canvas.top -= (newHeight - height) / 2;
}
canvas.width = newWidth;
canvas.height = newHeight;
this.renderCanvas(true);
}
},
/**
* Rotate the canvas with a relative degree
*
* @param {Number} degree
*/
rotate: function (degree) {
this.rotateTo((this.image.rotate || 0) + num(degree));
},
/**
* Rotate the canvas to an absolute degree
* https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function#rotate()
*
* @param {Number} degree
*/
rotateTo: function (degree) {
degree = num(degree);
if (isNumber(degree) && this.isBuilt && !this.isDisabled && this.options.rotatable) {
this.image.rotate = degree % 360;
this.isRotated = true;
this.renderCanvas(true);
}
},
/**
* Scale the image
* https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function#scale()
*
* @param {Number} scaleX
* @param {Number} scaleY (optional)
*/
scale: function (scaleX, scaleY) {
var image = this.image;
var isChanged = false;
// If "scaleY" is not present, its default value is "scaleX"
if (isUndefined(scaleY)) {
scaleY = scaleX;
}
scaleX = num(scaleX);
scaleY = num(scaleY);
if (this.isBuilt && !this.isDisabled && this.options.scalable) {
if (isNumber(scaleX)) {
image.scaleX = scaleX;
isChanged = true;
}
if (isNumber(scaleY)) {
image.scaleY = scaleY;
isChanged = true;
}
if (isChanged) {
this.renderImage(true);
}
}
},
/**
* Scale the abscissa of the image
*
* @param {Number} scaleX
*/
scaleX: function (scaleX) {
var scaleY = this.image.scaleY;
this.scale(scaleX, isNumber(scaleY) ? scaleY : 1);
},
/**
* Scale the ordinate of the image
*
* @param {Number} scaleY
*/
scaleY: function (scaleY) {
var scaleX = this.image.scaleX;
this.scale(isNumber(scaleX) ? scaleX : 1, scaleY);
},
/**
* Get the cropped area position and size data (base on the original image)
*
* @param {Boolean} isRounded (optional)
* @return {Object} data
*/
getData: function (isRounded) {
var options = this.options;
var image = this.image;
var canvas = this.canvas;
var cropBox = this.cropBox;
var ratio;
var data;
if (this.isBuilt && this.isCropped) {
data = {
x: cropBox.left - canvas.left,
y: cropBox.top - canvas.top,
width: cropBox.width,
height: cropBox.height
};
ratio = image.width / image.naturalWidth;
$.each(data, function (i, n) {
n = n / ratio;
data[i] = isRounded ? round(n) : n;
});
} else {
data = {
x: 0,
y: 0,
width: 0,
height: 0
};
}
if (options.rotatable) {
data.rotate = image.rotate || 0;
}
if (options.scalable) {
data.scaleX = image.scaleX || 1;
data.scaleY = image.scaleY || 1;
}
return data;
},
/**
* Set the cropped area position and size with new data
*
* @param {Object} data
*/
setData: function (data) {
var options = this.options;
var image = this.image;
var canvas = this.canvas;
var cropBoxData = {};
var isRotated;
var isScaled;
var ratio;
if ($.isFunction(data)) {
data = data.call(this.element);
}
if (this.isBuilt && !this.isDisabled && $.isPlainObject(data)) {
if (options.rotatable) {
if (isNumber(data.rotate) && data.rotate !== image.rotate) {
image.rotate = data.rotate;
this.isRotated = isRotated = true;
}
}
if (options.scalable) {
if (isNumber(data.scaleX) && data.scaleX !== image.scaleX) {
image.scaleX = data.scaleX;
isScaled = true;
}
if (isNumber(data.scaleY) && data.scaleY !== image.scaleY) {
image.scaleY = data.scaleY;
isScaled = true;
}
}
if (isRotated) {
this.renderCanvas();
} else if (isScaled) {
this.renderImage();
}
ratio = image.width / image.naturalWidth;
if (isNumber(data.x)) {
cropBoxData.left = data.x * ratio + canvas.left;
}
if (isNumber(data.y)) {
cropBoxData.top = data.y * ratio + canvas.top;
}
if (isNumber(data.width)) {
cropBoxData.width = data.width * ratio;
}
if (isNumber(data.height)) {
cropBoxData.height = data.height * ratio;
}
this.setCropBoxData(cropBoxData);
}
},
/**
* Get the container size data
*
* @return {Object} data
*/
getContainerData: function () {
return this.isBuilt ? this.container : {};
},
/**
* Get the image position and size data
*
* @return {Object} data
*/
getImageData: function () {
return this.isLoaded ? this.image : {};
},
/**
* Get the canvas position and size data
*
* @return {Object} data
*/
getCanvasData: function () {
var canvas = this.canvas;
var data = {};
if (this.isBuilt) {
$.each([
'left',
'top',
'width',
'height',
'naturalWidth',
'naturalHeight'
], function (i, n) {
data[n] = canvas[n];
});
}
return data;
},
/**
* Set the canvas position and size with new data
*
* @param {Object} data
*/
setCanvasData: function (data) {
var canvas = this.canvas;
var aspectRatio = canvas.aspectRatio;
if ($.isFunction(data)) {
data = data.call(this.$element);
}
if (this.isBuilt && !this.isDisabled && $.isPlainObject(data)) {
if (isNumber(data.left)) {
canvas.left = data.left;
}
if (isNumber(data.top)) {
canvas.top = data.top;
}
if (isNumber(data.width)) {
canvas.width = data.width;
canvas.height = data.width / aspectRatio;
} else if (isNumber(data.height)) {
canvas.height = data.height;
canvas.width = data.height * aspectRatio;
}
this.renderCanvas(true);
}
},
/**
* Get the crop box position and size data
*
* @return {Object} data
*/
getCropBoxData: function () {
var cropBox = this.cropBox;
var data;
if (this.isBuilt && this.isCropped) {
data = {
left: cropBox.left,
top: cropBox.top,
width: cropBox.width,
height: cropBox.height
};
}
return data || {};
},
/**
* Set the crop box position and size with new data
*
* @param {Object} data
*/
setCropBoxData: function (data) {
var cropBox = this.cropBox;
var aspectRatio = this.options.aspectRatio;
var isWidthChanged;
var isHeightChanged;
if ($.isFunction(data)) {
data = data.call(this.$element);
}
if (this.isBuilt && this.isCropped && !this.isDisabled && $.isPlainObject(data)) {
if (isNumber(data.left)) {
cropBox.left = data.left;
}
if (isNumber(data.top)) {
cropBox.top = data.top;
}
if (isNumber(data.width)) {
isWidthChanged = true;
cropBox.width = data.width;
}
if (isNumber(data.height)) {
isHeightChanged = true;
cropBox.height = data.height;
}
if (aspectRatio) {
if (isWidthChanged) {
cropBox.height = cropBox.width / aspectRatio;
} else if (isHeightChanged) {
cropBox.width = cropBox.height * aspectRatio;
}
}
this.renderCropBox();
}
},
/**
* Get a canvas drawn the cropped image
*
* @param {Object} options (optional)
* @return {HTMLCanvasElement} canvas
*/
getCroppedCanvas: function (options) {
var originalWidth;
var originalHeight;
var canvasWidth;
var canvasHeight;
var scaledWidth;
var scaledHeight;
var scaledRatio;
var aspectRatio;
var canvas;
var context;
var data;
if (!this.isBuilt || !SUPPORT_CANVAS) {
return;
}
if (!this.isCropped) {
return getSourceCanvas(this.$clone[0], this.image);
}
if (!$.isPlainObject(options)) {
options = {};
}
data = this.getData();
originalWidth = data.width;
originalHeight = data.height;
aspectRatio = originalWidth / originalHeight;
if ($.isPlainObject(options)) {
scaledWidth = options.width;
scaledHeight = options.height;
if (scaledWidth) {
scaledHeight = scaledWidth / aspectRatio;
scaledRatio = scaledWidth / originalWidth;
} else if (scaledHeight) {
scaledWidth = scaledHeight * aspectRatio;
scaledRatio = scaledHeight / originalHeight;
}
}
// The canvas element will use `Math.floor` on a float number, so floor first
canvasWidth = floor(scaledWidth || originalWidth);
canvasHeight = floor(scaledHeight || originalHeight);
canvas = $('<canvas>')[0];
canvas.width = canvasWidth;
canvas.height = canvasHeight;
context = canvas.getContext('2d');
if (options.fillColor) {
context.fillStyle = options.fillColor;
context.fillRect(0, 0, canvasWidth, canvasHeight);
}
// https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D.drawImage
context.drawImage.apply(context, (function () {
var source = getSourceCanvas(this.$clone[0], this.image);
var sourceWidth = source.width;
var sourceHeight = source.height;
var canvas = this.canvas;
var params = [source];
// Source canvas
var srcX = data.x + canvas.naturalWidth * (abs(data.scaleX || 1) - 1) / 2;
var srcY = data.y + canvas.naturalHeight * (abs(data.scaleY || 1) - 1) / 2;
var srcWidth;
var srcHeight;
// Destination canvas
var dstX;
var dstY;
var dstWidth;
var dstHeight;
if (srcX <= -originalWidth || srcX > sourceWidth) {
srcX = srcWidth = dstX = dstWidth = 0;
} else if (srcX <= 0) {
dstX = -srcX;
srcX = 0;
srcWidth = dstWidth = min(sourceWidth, originalWidth + srcX);
} else if (srcX <= sourceWidth) {
dstX = 0;
srcWidth = dstWidth = min(originalWidth, sourceWidth - srcX);
}
if (srcWidth <= 0 || srcY <= -originalHeight || srcY > sourceHeight) {
srcY = srcHeight = dstY = dstHeight = 0;
} else if (srcY <= 0) {
dstY = -srcY;
srcY = 0;
srcHeight = dstHeight = min(sourceHeight, originalHeight + srcY);
} else if (srcY <= sourceHeight) {
dstY = 0;
srcHeight = dstHeight = min(originalHeight, sourceHeight - srcY);
}
// All the numerical parameters should be integer for `drawImage` (#476)
params.push(floor(srcX), floor(srcY), floor(srcWidth), floor(srcHeight));
// Scale destination sizes
if (scaledRatio) {
dstX *= scaledRatio;
dstY *= scaledRatio;
dstWidth *= scaledRatio;
dstHeight *= scaledRatio;
}
// Avoid "IndexSizeError" in IE and Firefox
if (dstWidth > 0 && dstHeight > 0) {
params.push(floor(dstX), floor(dstY), floor(dstWidth), floor(dstHeight));
}
return params;
}).call(this));
return canvas;
},
/**
* Change the aspect ratio of the crop box
*
* @param {Number} aspectRatio
*/
setAspectRatio: function (aspectRatio) {
var options = this.options;
if (!this.isDisabled && !isUndefined(aspectRatio)) {
// 0 -> NaN
options.aspectRatio = max(0, aspectRatio) || NaN;
if (this.isBuilt) {
this.initCropBox();
if (this.isCropped) {
this.renderCropBox();
}
}
}
},
/**
* Change the drag mode
*
* @param {String} mode (optional)
*/
setDragMode: function (mode) {
var options = this.options;
var croppable;
var movable;
if (this.isLoaded && !this.isDisabled) {
croppable = mode === ACTION_CROP;
movable = options.movable && mode === ACTION_MOVE;
mode = (croppable || movable) ? mode : ACTION_NONE;
this.$dragBox.
data(DATA_ACTION, mode).
toggleClass(CLASS_CROP, croppable).
toggleClass(CLASS_MOVE, movable);
if (!options.cropBoxMovable) {
// Sync drag mode to crop box when it is not movable(#300)
this.$face.
data(DATA_ACTION, mode).
toggleClass(CLASS_CROP, croppable).
toggleClass(CLASS_MOVE, movable);
}
}
}
};
Cropper.DEFAULTS = {
// Define the view mode of the cropper
viewMode: 0, // 0, 1, 2, 3
// 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 jQuery 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
build: null,
built: null,
cropstart: null,
cropmove: null,
cropend: null,
crop: null,
zoom: null
};
Cropper.setDefaults = function (options) {
$.extend(Cropper.DEFAULTS, options);
};
Cropper.TEMPLATE = (
'<div class="cropper-container">' +
'<div class="cropper-wrap-box">' +
'<div class="cropper-canvas"></div>' +
'</div>' +
'<div class="cropper-drag-box"></div>' +
'<div class="cropper-crop-box">' +
'<span class="cropper-view-box"></span>' +
'<span class="cropper-dashed dashed-h"></span>' +
'<span class="cropper-dashed dashed-v"></span>' +
'<span class="cropper-center"></span>' +
'<span class="cropper-face"></span>' +
'<span class="cropper-line line-e" data-action="e"></span>' +
'<span class="cropper-line line-n" data-action="n"></span>' +
'<span class="cropper-line line-w" data-action="w"></span>' +
'<span class="cropper-line line-s" data-action="s"></span>' +
'<span class="cropper-point point-e" data-action="e"></span>' +
'<span class="cropper-point point-n" data-action="n"></span>' +
'<span class="cropper-point point-w" data-action="w"></span>' +
'<span class="cropper-point point-s" data-action="s"></span>' +
'<span class="cropper-point point-ne" data-action="ne"></span>' +
'<span class="cropper-point point-nw" data-action="nw"></span>' +
'<span class="cropper-point point-sw" data-action="sw"></span>' +
'<span class="cropper-point point-se" data-action="se"></span>' +
'</div>' +
'</div>'
);
// Save the other cropper
Cropper.other = $.fn.cropper;
// Register as jQuery plugin
$.fn.cropper = function (option) {
var args = toArray(arguments, 1);
var result;
this.each(function () {
var $this = $(this);
var data = $this.data(NAMESPACE);
var options;
var fn;
if (!data) {
if (/destroy/.test(option)) {
return;
}
options = $.extend({}, $this.data(), $.isPlainObject(option) && option);
$this.data(NAMESPACE, (data = new Cropper(this, options)));
}
if (typeof option === 'string' && $.isFunction(fn = data[option])) {
result = fn.apply(data, args);
}
});
return isUndefined(result) ? this : result;
};
$.fn.cropper.Constructor = Cropper;
$.fn.cropper.setDefaults = Cropper.setDefaults;
// No conflict
$.fn.cropper.noConflict = function () {
$.fn.cropper = Cropper.other;
return this;
};
});
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