app/assets/javascripts/app/lib/base/cropper.js
/*!
* Cropper v1.0.0-rc.1
* https://github.com/fengyuanchen/cropper
*
* Copyright (c) 2014-2015 Fengyuan Chen and contributors
* Released under the MIT license
*
* Date: 2015-09-05T04:29:32.906Z
*/
(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 = $(document);
var location = window.location;
// Constants
var NAMESPACE = 'cropper';
var PREVIEW = 'preview.' + NAMESPACE;
// Classes
var CLASS_MODAL = 'cropper-modal';
var CLASS_HIDE = 'cropper-hide';
var CLASS_HIDDEN = 'cropper-hidden';
var CLASS_INVISIBLE = 'cropper-invisible';
var CLASS_MOVE = 'cropper-move';
var CLASS_CROP = 'cropper-crop';
var CLASS_DISABLED = 'cropper-disabled';
var CLASS_BG = 'cropper-bg';
// Events
var EVENT_MOUSE_DOWN = 'mousedown touchstart pointerdown MSPointerDown';
var EVENT_MOUSE_MOVE = 'mousemove touchmove pointermove MSPointerMove';
var EVENT_MOUSE_UP = 'mouseup touchend touchcancel pointerup pointercancel MSPointerUp MSPointerCancel';
var EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';
var EVENT_DBLCLICK = 'dblclick';
var EVENT_LOAD = 'load.' + NAMESPACE;
var EVENT_ERROR = 'error.' + NAMESPACE;
var EVENT_RESIZE = 'resize.' + NAMESPACE; // Bind to window with namespace
var EVENT_BUILD = 'build.' + NAMESPACE;
var EVENT_BUILT = 'built.' + NAMESPACE;
var EVENT_CROP_START = 'cropstart.' + NAMESPACE;
var EVENT_CROP_MOVE = 'cropmove.' + NAMESPACE;
var EVENT_CROP_END = 'cropend.' + NAMESPACE;
var EVENT_CROP = 'crop.' + NAMESPACE;
var EVENT_ZOOM = 'zoom.' + NAMESPACE;
// RegExps
var REGEXP_ACTIONS = /^(e|w|s|n|se|sw|ne|nw|all|crop|move|zoom)$/;
// 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';
// Function check
function _isFunction(obj){
return ((typeof obj) === 'function')
}
// Supports
var SUPPORT_CANVAS = _isFunction($('<canvas>')[0].getContext);
// Maths
var sqrt = Math.sqrt;
var min = Math.min;
var max = Math.max;
var abs = Math.abs;
var sin = Math.sin;
var cos = Math.cos;
var num = parseFloat;
// Prototype
var prototype = {};
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 getNaturalSize(image, callback) {
var newImage;
// Modern browsers
if (image.naturalWidth) {
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;
if (isNumber(rotate)) {
transforms.push('rotate(' + rotate + 'deg)');
}
if (isNumber(scaleX) && isNumber(scaleY)) {
transforms.push('scale(' + scaleX + ',' + scaleY + ')');
}
return transforms.length ? transforms.join(' ') : 'none';
}
function getRotatedSizes(data, reverse) {
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 (!reverse) {
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 = $('<canvas>')[0];
var context = canvas.getContext('2d');
var x = 0;
var y = 0;
var width = data.naturalWidth;
var height = data.naturalHeight;
var rotate = data.rotate;
var scaleX = data.scaleX;
var scaleY = data.scaleY;
var scalable = isNumber(scaleX) && isNumber(scaleY) && (scaleX !== 1 || scaleY !== 1);
var rotatable = isNumber(rotate) && rotate !== 0;
var advanced = rotatable || scalable;
var canvasWidth = width;
var canvasHeight = height;
var translateX;
var translateY;
var rotated;
if (scalable) {
translateX = width / 2;
translateY = height / 2;
}
if (rotatable) {
rotated = getRotatedSizes({
width: width,
height: height,
degree: rotate
});
canvasWidth = rotated.width;
canvasHeight = rotated.height;
translateX = rotated.width / 2;
translateY = rotated.height / 2;
}
canvas.width = canvasWidth;
canvas.height = canvasHeight;
if (advanced) {
x = -width / 2;
y = -height / 2;
context.save();
context.translate(translateX, translateY);
}
if (rotatable) {
context.rotate(rotate * Math.PI / 180);
}
// Should call `scale` after rotated
if (scalable) {
context.scale(scaleX, scaleY);
}
context.drawImage(image, x, y, width, height);
if (advanced) {
context.restore();
}
return canvas;
}
function Cropper(element, options) {
this.$element = $(element);
this.options = $.extend({}, Cropper.DEFAULTS, $.isPlainObject(options) && options);
this.ready = false;
this.built = false;
this.complete = false;
this.rotated = false;
this.cropped = false;
this.disabled = false;
this.replaced = false;
this.isImg = false;
this.originalUrl = '';
this.canvas = null;
this.cropBox = null;
this.init();
}
$.extend(prototype, {
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.isDefaultPrevented();
},
load: function (url) {
var options = this.options;
var $this = this.$element;
var crossOrigin = '';
var bustCacheUrl;
var $clone;
if (!url) {
return;
}
this.url = url;
// Trigger build event first
$this.one(EVENT_BUILD, options.build);
if (this.trigger(EVENT_BUILD)) {
return;
}
if (options.checkImageOrigin && isCrossOriginURL(url)) {
crossOrigin = ' crossOrigin="anonymous"';
// Bust cache (#148), only when there was not a "crossOrigin" property
if (!$this.prop('crossOrigin')) {
bustCacheUrl = addTimestamp(url);
}
}
this.$clone = $clone = $('<img' + crossOrigin + ' src="' + (bustCacheUrl || url) + '">');
if (this.isImg) {
if ($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.isImg ? this.$element[0] : this.$clone[0];
getNaturalSize(image, $.proxy(function (naturalWidth, naturalHeight) {
this.image = {
naturalWidth: naturalWidth,
naturalHeight: naturalHeight,
aspectRatio: naturalWidth / naturalHeight
};
this.ready = true;
this.build();
}, this));
},
stop: function () {
this.$clone.remove();
this.$clone = null;
}
});
$.extend(prototype, {
build: function () {
var options = this.options;
var $this = this.$element;
var $clone = this.$clone;
var $cropper;
var $cropBox;
var $face;
if (!this.ready) {
return;
}
// Unbuild first when replace
if (this.built) {
this.unbuild();
}
// Create cropper elements
this.$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) {
$clone.removeClass(CLASS_HIDE);
}
this.initPreview();
this.bind();
// Format aspect ratio (0 -> NaN)
options.aspectRatio = num(options.aspectRatio) || NaN;
if (options.autoCrop) {
this.cropped = true;
if (options.modal) {
this.$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('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.dragCrop ? ACTION_CROP : (options.movable ? ACTION_MOVE : ACTION_NONE));
this.render();
this.built = 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.complete = true;
}, this), 0);
},
unbuild: function () {
if (!this.built) {
return;
}
this.built = 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;
}
});
$.extend(prototype, {
render: function () {
this.initContainer();
this.initCanvas();
this.initCropBox();
this.renderCanvas();
if (this.cropped) {
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 container = this.container;
var containerWidth = container.width;
var containerHeight = container.height;
var image = this.image;
var aspectRatio = image.aspectRatio;
var canvas = {
aspectRatio: aspectRatio,
width: containerWidth,
height: containerHeight
};
if (containerHeight * aspectRatio > containerWidth) {
canvas.height = containerWidth / aspectRatio;
} else {
canvas.width = containerHeight * aspectRatio;
}
canvas.oldLeft = canvas.left = (containerWidth - canvas.width) / 2;
canvas.oldTop = canvas.top = (containerHeight - canvas.height) / 2;
this.canvas = canvas;
this.limitCanvas(true, true);
this.initialImage = $.extend({}, image);
this.initialCanvas = $.extend({}, canvas);
},
limitCanvas: function (size, position) {
var options = this.options;
var strict = options.strict;
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 cropped = this.cropped && cropBox;
var initialCanvas = this.initialCanvas || canvas;
var initialCanvasWidth = initialCanvas.width;
var initialCanvasHeight = initialCanvas.height;
var minCanvasWidth;
var minCanvasHeight;
if (size) {
minCanvasWidth = num(options.minCanvasWidth) || 0;
minCanvasHeight = num(options.minCanvasHeight) || 0;
if (minCanvasWidth) {
if (strict) {
minCanvasWidth = max(cropped ? cropBox.width : initialCanvasWidth, minCanvasWidth);
}
minCanvasHeight = minCanvasWidth / aspectRatio;
} else if (minCanvasHeight) {
if (strict) {
minCanvasHeight = max(cropped ? cropBox.height : initialCanvasHeight, minCanvasHeight);
}
minCanvasWidth = minCanvasHeight * aspectRatio;
} else if (strict) {
if (cropped) {
minCanvasWidth = cropBox.width;
minCanvasHeight = cropBox.height;
if (minCanvasHeight * aspectRatio > minCanvasWidth) {
minCanvasWidth = minCanvasHeight * aspectRatio;
} else {
minCanvasHeight = minCanvasWidth / aspectRatio;
}
} else {
minCanvasWidth = initialCanvasWidth;
minCanvasHeight = initialCanvasHeight;
}
}
$.extend(canvas, {
minWidth: minCanvasWidth,
minHeight: minCanvasHeight,
maxWidth: Infinity,
maxHeight: Infinity
});
}
if (position) {
if (strict) {
if (cropped) {
canvas.minLeft = min(cropBox.left, (cropBox.left + cropBox.width) - canvas.width);
canvas.minTop = min(cropBox.top, (cropBox.top + cropBox.height) - canvas.height);
canvas.maxLeft = cropBox.left;
canvas.maxTop = cropBox.top;
} else {
canvas.minLeft = min(0, containerWidth - canvas.width);
canvas.minTop = min(0, containerHeight - canvas.height);
canvas.maxLeft = max(0, containerWidth - canvas.width);
canvas.maxTop = max(0, containerHeight - canvas.height);
}
} else {
canvas.minLeft = -canvas.width;
canvas.minTop = -canvas.height;
canvas.maxLeft = containerWidth;
canvas.maxTop = containerHeight;
}
}
},
renderCanvas: function (changed) {
var options = this.options;
var canvas = this.canvas;
var image = this.image;
var aspectRatio;
var rotated;
if (this.rotated) {
this.rotated = false;
// Computes rotated sizes with image sizes
rotated = getRotatedSizes({
width: image.width,
height: image.height,
degree: image.rotate
});
aspectRatio = rotated.width / rotated.height;
if (aspectRatio !== canvas.aspectRatio) {
canvas.left -= (rotated.width - canvas.width) / 2;
canvas.top -= (rotated.height - canvas.height) / 2;
canvas.width = rotated.width;
canvas.height = rotated.height;
canvas.aspectRatio = aspectRatio;
this.limitCanvas(true, false);
}
}
if (canvas.width > canvas.maxWidth || canvas.width < canvas.minWidth) {
canvas.left = canvas.oldLeft;
}
if (canvas.height > canvas.maxHeight || canvas.height < canvas.minHeight) {
canvas.top = canvas.oldTop;
}
canvas.width = min(max(canvas.width, canvas.minWidth), canvas.maxWidth);
canvas.height = min(max(canvas.height, canvas.minHeight), canvas.maxHeight);
this.limitCanvas(false, true);
canvas.oldLeft = canvas.left = min(max(canvas.left, canvas.minLeft), canvas.maxLeft);
canvas.oldTop = canvas.top = min(max(canvas.top, canvas.minTop), canvas.maxTop);
this.$canvas.css({
width: canvas.width,
height: canvas.height,
left: canvas.left,
top: canvas.top
});
this.renderImage();
if (this.cropped && options.strict) {
this.limitCropBox(true, true);
}
if (changed) {
this.output();
}
},
renderImage: function (changed) {
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 (changed) {
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 (size, position) {
var options = this.options;
var strict = options.strict;
var container = this.container;
var containerWidth = container.width;
var containerHeight = container.height;
var canvas = this.canvas;
var cropBox = this.cropBox;
var aspectRatio = options.aspectRatio;
var minCropBoxWidth;
var minCropBoxHeight;
if (size) {
minCropBoxWidth = num(options.minCropBoxWidth) || 0;
minCropBoxHeight = num(options.minCropBoxHeight) || 0;
// The min/maxCropBoxWidth/Height must less than container width/height
cropBox.minWidth = min(containerWidth, minCropBoxWidth);
cropBox.minHeight = min(containerHeight, minCropBoxHeight);
cropBox.maxWidth = min(containerWidth, strict ? canvas.width : containerWidth);
cropBox.maxHeight = min(containerHeight, strict ? canvas.height : containerHeight);
if (aspectRatio) {
// Compare crop box size with container first
if (cropBox.maxHeight * aspectRatio > cropBox.maxWidth) {
cropBox.minHeight = cropBox.minWidth / aspectRatio;
cropBox.maxHeight = cropBox.maxWidth / aspectRatio;
} else {
cropBox.minWidth = cropBox.minHeight * aspectRatio;
cropBox.maxWidth = cropBox.maxHeight * aspectRatio;
}
}
// The "minWidth" must be less than "maxWidth", and the "minHeight" too.
cropBox.minWidth = min(cropBox.maxWidth, cropBox.minWidth);
cropBox.minHeight = min(cropBox.maxHeight, cropBox.minHeight);
}
if (position) {
if (strict) {
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('action', (cropBox.width === containerWidth && cropBox.height === containerHeight) ? ACTION_MOVE : ACTION_ALL);
}
this.$cropBox.css({
width: cropBox.width,
height: cropBox.height,
left: cropBox.left,
top: cropBox.top
});
if (this.cropped && options.strict) {
this.limitCanvas(true, true);
}
if (!this.disabled) {
this.output();
}
},
output: function () {
this.preview();
if (this.complete) {
this.trigger(EVENT_CROP, this.getData());
} else if (!this.built) {
// Only trigger one crop event before complete
this.$element.one(EVENT_BUILT, $.proxy(function () {
this.trigger(EVENT_CROP, this.getData());
}, this));
}
}
});
$.extend(prototype, {
initPreview: function () {
var url = this.url;
this.$preview = $(this.options.preview);
this.$viewBox.html('<img src="' + url + '">');
this.$preview.each(function () {
var $this = $(this);
// Save the original size for recover
$this.data(PREVIEW, {
width: $this.width(),
height: $this.height(),
original: $this.html()
});
/**
* Override img element styles
* Add `display:block` to avoid margin top issue
* (Occur only when margin-top <= -height)
*/
$this.html(
'<img src="' + url + '" style="display:block;width:100%;' +
'min-width:0!important;min-height:0!important;' +
'max-width:none!important;max-height:none!important;' +
'image-orientation:0deg!important">'
);
});
},
resetPreview: function () {
this.$preview.each(function () {
var $this = $(this);
$this.html($this.data(PREVIEW).original).removeData(PREVIEW);
});
},
preview: function () {
var image = this.image;
var canvas = this.canvas;
var cropBox = this.cropBox;
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.cropped || this.disabled) {
return;
}
this.$viewBox.find('img').css({
width: width,
height: height,
marginLeft: -left,
marginTop: -top,
transform: getTransform(image)
});
this.$preview.each(function () {
var $this = $(this);
var data = $this.data(PREVIEW);
var ratio = data.width / cropBox.width;
var newWidth = data.width;
var newHeight = cropBox.height * ratio;
if (newHeight > data.height) {
ratio = data.height / cropBox.height;
newWidth = cropBox.width * ratio;
newHeight = data.height;
}
$this.width(newWidth).height(newHeight).find('img').css({
width: width * ratio,
height: height * ratio,
marginLeft: -left * ratio,
marginTop: -top * ratio,
transform: getTransform(image)
});
});
}
});
$.extend(prototype, {
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.mouseWheelZoom) {
$cropper.on(EVENT_WHEEL, $.proxy(this.wheel, this));
}
if (options.doubleClickToggle) {
$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.mouseWheelZoom) {
$cropper.off(EVENT_WHEEL, this.wheel);
}
if (options.doubleClickToggle) {
$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);
}
}
});
$.extend(prototype, {
resize: function () {
var $container = this.$container;
var container = this.container;
var canvasData;
var cropBoxData;
var ratio;
// Check `container` is necessary for IE8
if (this.disabled || !container) {
return;
}
ratio = $container.width() / container.width;
// Resize when width changed or height changed
if (ratio !== 1 || $container.height() !== container.height) {
canvasData = this.getCanvasData();
cropBoxData = this.getCropBoxData();
this.render();
this.setCanvasData($.each(canvasData, function (i, n) {
canvasData[i] = n * ratio;
}));
this.setCropBoxData($.each(cropBoxData, function (i, n) {
cropBoxData[i] = n * ratio;
}));
}
},
dblclick: function () {
if (this.disabled) {
return;
}
if (this.$dragBox.hasClass(CLASS_CROP)) {
this.setDragMode(ACTION_MOVE);
} else {
this.setDragMode(ACTION_CROP);
}
},
wheel: function (event) {
var originalEvent = event.originalEvent;
var e = originalEvent;
var ratio = num(this.options.wheelZoomRatio) || 0.1;
var delta = 1;
if (this.disabled) {
return;
}
event.preventDefault();
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, originalEvent);
},
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.disabled) {
return;
}
if (touches) {
touchesLength = touches.length;
if (touchesLength > 1) {
if (options.zoomable && options.touchDragZoom && touchesLength === 2) {
e = touches[1];
this.startX2 = e.pageX;
this.startY2 = e.pageY;
action = ACTION_ZOOM;
} else {
return;
}
}
e = touches[0];
}
action = action || $(e.target).data('action');
if (REGEXP_ACTIONS.test(action)) {
if (this.trigger(EVENT_CROP_START, {
originalEvent: originalEvent,
action: action
})) {
return;
}
event.preventDefault();
this.action = action;
this.cropping = false;
// IE8 has `event.pageX/Y`, but not `event.originalEvent.pageX/Y`
// IE10 has `event.originalEvent.pageX/Y`, but not `event.pageX/Y`
this.startX = e.pageX || originalEvent && originalEvent.pageX;
this.startY = e.pageY || originalEvent && originalEvent.pageY;
if (action === ACTION_CROP) {
this.cropping = true;
this.$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.disabled) {
return;
}
if (touches) {
touchesLength = touches.length;
if (touchesLength > 1) {
if (options.zoomable && options.touchDragZoom && 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
})) {
return;
}
event.preventDefault();
this.endX = e.pageX || originalEvent && originalEvent.pageX;
this.endY = e.pageY || originalEvent && originalEvent.pageY;
this.change(e.shiftKey, action === ACTION_ZOOM ? originalEvent : null);
}
},
cropEnd: function (event) {
var originalEvent = event.originalEvent;
var action = this.action;
if (this.disabled) {
return;
}
if (action) {
event.preventDefault();
if (this.cropping) {
this.cropping = false;
this.$dragBox.toggleClass(CLASS_MODAL, this.cropped && this.options.modal);
}
this.action = '';
this.trigger(EVENT_CROP_END, {
originalEvent: originalEvent,
action: action
});
}
}
});
$.extend(prototype, {
change: function (shiftKey, originalEvent) {
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 (options.strict) {
minLeft = cropBox.minLeft;
minTop = cropBox.minTop;
maxWidth = minLeft + min(container.width, canvas.width);
maxHeight = minTop + min(container.height, 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)
), originalEvent);
this.startX2 = this.endX2;
this.startY2 = this.endY2;
renderable = false;
break;
// Create crop box
case ACTION_CROP:
if (range.x && range.y) {
offset = this.$cropper.offset();
left = this.startX - offset.left;
top = this.startY - offset.top;
width = cropBox.minWidth;
height = cropBox.minHeight;
if (range.x > 0) {
if (range.y > 0) {
action = ACTION_SOUTH_EAST;
} else {
action = ACTION_NORTH_EAST;
top -= height;
}
} else {
if (range.y > 0) {
action = ACTION_SOUTH_WEST;
left -= width;
} else {
action = ACTION_NORTH_WEST;
left -= width;
top -= height;
}
}
// Show the crop box if is hidden
if (!this.cropped) {
this.cropped = true;
this.$cropBox.removeClass(CLASS_HIDDEN);
}
}
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;
}
});
$.extend(prototype, {
// Show the crop box manually
crop: function () {
if (!this.built || this.disabled) {
return;
}
if (!this.cropped) {
this.cropped = true;
this.limitCropBox(true, true);
if (this.options.modal) {
this.$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.built || this.disabled) {
return;
}
this.image = $.extend({}, this.initialImage);
this.canvas = $.extend({}, this.initialCanvas);
// Required for strict mode
this.cropBox = $.extend({}, this.initialCropBox);
this.renderCanvas();
if (this.cropped) {
this.renderCropBox();
}
},
// Clear the crop box
clear: function () {
if (!this.cropped || this.disabled) {
return;
}
$.extend(this.cropBox, {
left: 0,
top: 0,
width: 0,
height: 0
});
this.cropped = false;
this.renderCropBox();
this.limitCanvas();
// Render canvas after crop box rendered
this.renderCanvas();
this.$dragBox.removeClass(CLASS_MODAL);
this.$cropBox.addClass(CLASS_HIDDEN);
},
/**
* Replace the image's src and rebuild the cropper
*
* @param {String} url
*/
replace: function (url) {
if (!this.disabled && url) {
if (this.isImg) {
this.replaced = true;
this.$element.attr('src', url);
}
// Clear previous data
this.options.data = null;
this.load(url);
}
},
// Enable (unfreeze) the cropper
enable: function () {
if (this.built) {
this.disabled = false;
this.$cropper.removeClass(CLASS_DISABLED);
}
},
// Disable (freeze) the cropper
disable: function () {
if (this.built) {
this.disabled = true;
this.$cropper.addClass(CLASS_DISABLED);
}
},
// Destroy the cropper and remove the instance from the image
destroy: function () {
var $this = this.$element;
if (this.ready) {
if (this.isImg && this.replaced) {
$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
*
* @param {Number} offsetX
* @param {Number} offsetY (optional)
*/
move: function (offsetX, offsetY) {
var canvas = this.canvas;
// If "offsetY" is not present, its default value is "offsetX"
if (isUndefined(offsetY)) {
offsetY = offsetX;
}
offsetX = num(offsetX);
offsetY = num(offsetY);
if (this.built && !this.disabled && this.options.movable) {
canvas.left += isNumber(offsetX) ? offsetX : 0;
canvas.top += isNumber(offsetY) ? offsetY : 0;
this.renderCanvas(true);
}
},
/**
* Zoom the canvas
*
* @param {Number} ratio
* @param {Event} _originalEvent (private)
*/
zoom: function (ratio, _originalEvent) {
var canvas = this.canvas;
var width;
var height;
ratio = num(ratio);
if (ratio && this.built && !this.disabled && this.options.zoomable) {
if (this.trigger(EVENT_ZOOM, {
originalEvent: _originalEvent,
ratio: ratio
})) {
return;
}
if (ratio < 0) {
ratio = 1 / (1 - ratio);
} else {
ratio = 1 + ratio;
}
width = canvas.width * ratio;
height = canvas.height * ratio;
canvas.left -= (width - canvas.width) / 2;
canvas.top -= (height - canvas.height) / 2;
canvas.width = width;
canvas.height = height;
this.renderCanvas(true);
this.setDragMode(ACTION_MOVE);
}
},
/**
* Rotate the canvas
* https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function#rotate()
*
* @param {Number} degree
*/
rotate: function (degree) {
var image = this.image;
var rotate = image.rotate || 0;
degree = num(degree) || 0;
if (this.built && !this.disabled && this.options.rotatable) {
image.rotate = (rotate + degree) % 360;
this.rotated = 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;
// If "scaleY" is not present, its default value is "scaleX"
if (isUndefined(scaleY)) {
scaleY = scaleX;
}
scaleX = num(scaleX);
scaleY = num(scaleY);
if (this.built && !this.disabled && this.options.scalable) {
image.scaleX = isNumber(scaleX) ? scaleX : 1;
image.scaleY = isNumber(scaleY) ? scaleY : 1;
this.renderImage(true);
}
},
/**
* Get the cropped area position and size data (base on the original image)
*
* @param {Boolean} rounded (optional)
* @return {Object} data
*/
getData: function (rounded) {
var options = this.options;
var image = this.image;
var canvas = this.canvas;
var cropBox = this.cropBox;
var ratio;
var data;
if (this.built && this.cropped) {
data = {
x: cropBox.left - canvas.left,
y: cropBox.top - canvas.top,
width: cropBox.width,
height: cropBox.height
};
ratio = image.width / image.naturalWidth;
$.each(data, function (i, n) {
n = n / ratio;
data[i] = rounded ? Math.round(n) : n;
});
} else {
data = {
x: 0,
y: 0,
width: 0,
height: 0
};
}
if (options.rotatable) {
data.rotate = image.rotate || 0;
}
if (options.scalable) {
data.scaleX = image.scaleX || 1;
data.scaleY = image.scaleY || 1;
}
return data;
},
/**
* Set the cropped area position and size with new data
*
* @param {Object} data
*/
setData: function (data) {
var image = this.image;
var canvas = this.canvas;
var cropBoxData = {};
var ratio;
if (_isFunction(data)) {
data = data.call(this.$element);
}
if (this.built && !this.disabled && $.isPlainObject(data)) {
if (isNumber(data.rotate) && data.rotate !== image.rotate &&
this.options.rotatable) {
image.rotate = data.rotate;
this.rotated = true;
this.renderCanvas(true);
}
ratio = image.width / image.naturalWidth;
if (isNumber(data.x)) {
cropBoxData.left = data.x * ratio + canvas.left;
}
if (isNumber(data.y)) {
cropBoxData.top = data.y * ratio + canvas.top;
}
if (isNumber(data.width)) {
cropBoxData.width = data.width * ratio;
}
if (isNumber(data.height)) {
cropBoxData.height = data.height * ratio;
}
this.setCropBoxData(cropBoxData);
}
},
/**
* Get the container size data
*
* @return {Object} data
*/
getContainerData: function () {
return this.built ? this.container : {};
},
/**
* Get the image position and size data
*
* @return {Object} data
*/
getImageData: function () {
return this.ready ? this.image : {};
},
/**
* Get the canvas position and size data
*
* @return {Object} data
*/
getCanvasData: function () {
var canvas = this.canvas;
var data;
if (this.built) {
data = {
left: canvas.left,
top: canvas.top,
width: canvas.width,
height: canvas.height
};
}
return data || {};
},
/**
* Set the canvas position and size with new data
*
* @param {Object} data
*/
setCanvasData: function (data) {
var canvas = this.canvas;
var aspectRatio = canvas.aspectRatio;
if (_isFunction(data)) {
data = data.call(this.$element);
}
if (this.built && !this.disabled && $.isPlainObject(data)) {
if (isNumber(data.left)) {
canvas.left = data.left;
}
if (isNumber(data.top)) {
canvas.top = data.top;
}
if (isNumber(data.width)) {
canvas.width = data.width;
canvas.height = data.width / aspectRatio;
} else if (isNumber(data.height)) {
canvas.height = data.height;
canvas.width = data.height * aspectRatio;
}
this.renderCanvas(true);
}
},
/**
* Get the crop box position and size data
*
* @return {Object} data
*/
getCropBoxData: function () {
var cropBox = this.cropBox;
var data;
if (this.built && this.cropped) {
data = {
left: cropBox.left,
top: cropBox.top,
width: cropBox.width,
height: cropBox.height
};
}
return data || {};
},
/**
* Set the crop box position and size with new data
*
* @param {Object} data
*/
setCropBoxData: function (data) {
var cropBox = this.cropBox;
var aspectRatio = this.options.aspectRatio;
var widthChanged;
var heightChanged;
if (_isFunction(data)) {
data = data.call(this.$element);
}
if (this.built && this.cropped && !this.disabled && $.isPlainObject(data)) {
if (isNumber(data.left)) {
cropBox.left = data.left;
}
if (isNumber(data.top)) {
cropBox.top = data.top;
}
if (isNumber(data.width) && data.width !== cropBox.width) {
widthChanged = true;
cropBox.width = data.width;
}
if (isNumber(data.height) && data.height !== cropBox.height) {
heightChanged = true;
cropBox.height = data.height;
}
if (aspectRatio) {
if (widthChanged) {
cropBox.height = cropBox.width / aspectRatio;
} else if (heightChanged) {
cropBox.width = cropBox.height * aspectRatio;
}
}
this.renderCropBox();
}
},
/**
* Get a canvas drawn the cropped image
*
* @param {Object} options (optional)
* @return {HTMLCanvasElement} canvas
*/
getCroppedCanvas: function (options) {
var originalWidth;
var originalHeight;
var canvasWidth;
var canvasHeight;
var scaledWidth;
var scaledHeight;
var scaledRatio;
var aspectRatio;
var canvas;
var context;
var data;
if (!this.built || !this.cropped || !SUPPORT_CANVAS) {
return;
}
if (!$.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;
}
}
canvasWidth = scaledWidth || originalWidth;
canvasHeight = 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 args = [source];
// Source canvas
var srcX = data.x;
var srcY = data.y;
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);
}
args.push(srcX, srcY, srcWidth, 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) {
args.push(dstX, dstY, dstWidth, dstHeight);
}
return args;
}).call(this));
return canvas;
},
/**
* Change the aspect ratio of the crop box
*
* @param {Number} aspectRatio
*/
setAspectRatio: function (aspectRatio) {
var options = this.options;
if (!this.disabled && !isUndefined(aspectRatio)) {
// 0 -> NaN
options.aspectRatio = num(aspectRatio) || NaN;
if (this.built) {
this.initCropBox();
if (this.cropped) {
this.renderCropBox();
}
}
}
},
/**
* Change the drag mode
*
* @param {String} mode (optional)
*/
setDragMode: function (mode) {
var options = this.options;
var croppable;
var movable;
if (this.ready && !this.disabled) {
croppable = options.dragCrop && mode === ACTION_CROP;
movable = options.movable && mode === ACTION_MOVE;
mode = (croppable || movable) ? mode : ACTION_NONE;
this.$dragBox.
data('action', mode).
toggleClass(CLASS_CROP, croppable).
toggleClass(CLASS_MOVE, movable);
if (!options.cropBoxMovable) {
// Sync drag mode to crop box when it is not movable(#300)
this.$face.
data('action', mode).
toggleClass(CLASS_CROP, croppable).
toggleClass(CLASS_MOVE, movable);
}
}
}
});
$.extend(Cropper.prototype, prototype);
Cropper.DEFAULTS = {
// 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: '',
// Strict mode, the image cannot zoom out less than the container
strict: true,
// Rebuild when resize the window
responsive: true,
// Check if the target image is cross origin
checkImageOrigin: 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 create new crop box by dragging over the image
dragCrop: true,
// 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 wheeling mouse
mouseWheelZoom: true,
// Define zoom ratio when zoom the image by wheeling mouse
wheelZoomRatio: 0.1,
// Enable to zoom the image by dragging touch
touchDragZoom: true,
// Enable to move the crop box
cropBoxMovable: true,
// Enable to resize the crop box
cropBoxResizable: true,
// Toggle drag mode between "crop" and "move" when double click on the cropper
doubleClickToggle: 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-canvas"></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 (options) {
var args = toArray(arguments, 1);
var result;
this.each(function () {
var $this = $(this);
var data = $this.data(NAMESPACE);
var fn;
if (!data) {
if (/destroy/.test(options)) {
return;
}
$this.data(NAMESPACE, (data = new Cropper(this, options)));
}
if (typeof options === 'string' && _isFunction(fn = data[options])) {
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;
};
});