From 187afa54d96c020db7be0a93e8d83d7199999b22 Mon Sep 17 00:00:00 2001
From: sanketgautam <sk2gautam@gmail.com>
Date: Wed, 20 Dec 2017 00:24:24 +0530
Subject: [PATCH] added cropping feature for screenshot & reversesearch (#70)

* added cropping feature for screenshot & reversesearch

* corrected duplication issue & added more comments
---
 background.js             |  175 +-
 css/cropper.css           |  290 +++
 js/content_script.js      |  104 +
 js/cropperjs/change.js    |  471 +++++
 js/cropperjs/constants.js |   56 +
 js/cropperjs/cropper.js   | 3758 +++++++++++++++++++++++++++++++++++++
 js/cropperjs/defaults.js  |   99 +
 js/cropperjs/events.js    |  111 ++
 js/cropperjs/handlers.js  |  212 +++
 js/cropperjs/methods.js   |  833 ++++++++
 js/cropperjs/preview.js   |  142 ++
 js/cropperjs/render.js    |  495 +++++
 js/cropperjs/template.js  |   27 +
 js/cropperjs/utilities.js |  973 ++++++++++
 screenshot.html           |    4 +-
 15 files changed, 7707 insertions(+), 43 deletions(-)
 create mode 100644 css/cropper.css
 create mode 100644 js/content_script.js
 create mode 100644 js/cropperjs/change.js
 create mode 100644 js/cropperjs/constants.js
 create mode 100644 js/cropperjs/cropper.js
 create mode 100644 js/cropperjs/defaults.js
 create mode 100644 js/cropperjs/events.js
 create mode 100644 js/cropperjs/handlers.js
 create mode 100644 js/cropperjs/methods.js
 create mode 100644 js/cropperjs/preview.js
 create mode 100644 js/cropperjs/render.js
 create mode 100644 js/cropperjs/template.js
 create mode 100644 js/cropperjs/utilities.js

diff --git a/background.js b/background.js
index b24e16e..2c4155f 100644
--- a/background.js
+++ b/background.js
@@ -89,7 +89,6 @@ $(document).ready(function () {
           //stopRecognition();
         };
         recognition.onend = function () {
-
           var our_trigger = "hey ";
 
           if (text.toLowerCase() === our_trigger.toLowerCase()) {
@@ -304,31 +303,86 @@ $(document).ready(function () {
 
     return new Blob([ia], { type: mimeString });
   }
+  /*get cropped image from user*/
+  function getCroppedImage(image, callbackMethod){
+
+      console.log("cropping image : callbackMethod : "+callbackMethod)
+      chrome.tabs.query({ active: true, currentWindow: true }, function (tabs) { 
+        
+        var tabid = tabs[0].id;
+
+        chrome.tabs.executeScript(tabid, {
+            code: 'var imageurl ="'+image+'", callbackMethod = "'+callbackMethod+'";'
+        }, function() {
+            /*injecting cropperjs into current tab*/
+            chrome.tabs.executeScript(tabid, {file: "js/cropperjs/cropper.js"},function(response){
+              /*injecting our content script into current tab*/
+              chrome.tabs.executeScript(tabid, {file: "js/content_script.js"},function(response){
+                console.log("Indside background script!! id:"+tabid+", response: "+ JSON.stringify(response, null, 4));
+              });
+            });
+        });
+      });
+  }
 
   function reverseSearch() {
     chrome.tabs.captureVisibleTab(function (screenshotUrl) {
       /*uploading the screenshot to a sever & generating url*/
 
-      var blob = dataURItoBlob(screenshotUrl);
-      var fd = new FormData();
-      fd.append("file", blob);
-
-      var xhr = new XMLHttpRequest();
-      xhr.responseType = 'json';
-      xhr.open('POST', 'https://file.io', true);
-      xhr.onload = function () {
-        // Request finished, now opening new tab with google image search url.
-        if (this.response.success && this.response.success === true) {
-          /*opening new tab with the search results*/
-          var searchURL = "https://www.google.com/searchbyimage?&image_url=" + this.response.link;
-          chrome.tabs.create({ url: searchURL }, function (tab) {
-            console.log("reverse search successful");
-          });
-        } else {
-          console.log("Sorry, Unable to perform reverse search!");
-        }
+      //asking for image crop from user
+      if (confirm('Do you want to crop the image?')) {
+          // get cropped image & proceed
+          getCroppedImage(screenshotUrl,"reversesearch");
+          chrome.runtime.onMessage.addListener(function(message,sender,sendResponse){
+            if(message.callbackMethod === "reversesearch"){
+              var blob = dataURItoBlob(message.croppedImage);
+              var fd = new FormData();
+              fd.append("file", blob);
+
+              var xhr = new XMLHttpRequest();
+              xhr.responseType = 'json';
+              xhr.open('POST', 'https://file.io', true);
+              xhr.onload = function () {
+              // Request finished, now opening new tab with google image search url.
+              if (this.response.success && this.response.success === true) {
+                /*opening new tab with the search results*/
+                var searchURL = "https://www.google.com/searchbyimage?&image_url=" + this.response.link;
+                chrome.tabs.create({ url: searchURL }, function (tab) {
+                  console.log("reverse search successful");
+                });
+              } else {
+                console.log("Sorry, Unable to perform reverse search!");
+              }
       };
       xhr.send(fd);
+            }
+            //removing message listener
+            chrome.runtime.onMessage.removeListener(arguments.callee);
+          });
+      } else {
+          // proceed as before
+          var blob = dataURItoBlob(screenshotUrl);
+          var fd = new FormData();
+          fd.append("file", blob);
+
+          var xhr = new XMLHttpRequest();
+          xhr.responseType = 'json';
+          xhr.open('POST', 'https://file.io', true);
+          xhr.onload = function () {
+            // Request finished, now opening new tab with google image search url.
+            if (this.response.success && this.response.success === true) {
+              /*opening new tab with the search results*/
+              var searchURL = "https://www.google.com/searchbyimage?&image_url=" + this.response.link;
+              chrome.tabs.create({ url: searchURL }, function (tab) {
+                console.log("reverse search successful");
+              });
+            } else {
+              console.log("Sorry, Unable to perform reverse search!");
+            }
+          };
+          xhr.send(fd);
+       }
+
     });
   }
 
@@ -336,29 +390,68 @@ $(document).ready(function () {
     chrome.tabs.captureVisibleTab(function (screenshotUrl) {
       var viewTabUrl = chrome.extension.getURL('screenshot.html?id=' + id++)
       var targetId = null;
+      
+      //asking for image crop from user
+      if (confirm('Do you want to crop the image?')) {
+          // get cropped image & proceed
+          //if user wants to crop image
+          getCroppedImage(screenshotUrl,"screenshot");
+          chrome.runtime.onMessage.addListener(function(message,sender,sendResponse){
+            if(message.callbackMethod === "screenshot"){
+                console.log("CroppedImage Recieved!!");
+
+                chrome.tabs.onUpdated.addListener(function listener(tabId, changedProps) {
+                // we are waiting for the tab to be open
+                if (tabId != targetId || changedProps.status != "complete")
+                  return;
+
+                chrome.tabs.onUpdated.removeListener(listener);
+
+                // Look through all views to find the window which will display
+                // the screenshot, query paramater assures that it is unique
+                var views = chrome.extension.getViews();
+                for (var i = 0; i < views.length; i++) {
+                  var view = views[i];
+                  if (view.location.href == viewTabUrl) {
+                    view.setScreenshotUrl(message.croppedImage);
+                    break;
+                  }
+                }
+              });
+
+              chrome.tabs.create({ url: viewTabUrl }, function (tab) {
+                targetId = tab.id;
+              });
+            }
+            
+            //removing message listener
+            chrome.runtime.onMessage.removeListener(arguments.callee);
+          });
+      } else {
+          // proceed as before
+            chrome.tabs.onUpdated.addListener(function listener(tabId, changedProps) {
+            // we are waiting for the tab to be open
+            if (tabId != targetId || changedProps.status != "complete")
+              return;
+
+            chrome.tabs.onUpdated.removeListener(listener);
+
+            // Look through all views to find the window which will display
+            // the screenshot, query paramater assures that it is unique
+            var views = chrome.extension.getViews();
+            for (var i = 0; i < views.length; i++) {
+              var view = views[i];
+              if (view.location.href == viewTabUrl) {
+                view.setScreenshotUrl(screenshotUrl);
+                break;
+              }
+            }
+          });
 
-      chrome.tabs.onUpdated.addListener(function listener(tabId, changedProps) {
-        // we are waiting for the tab to be open
-        if (tabId != targetId || changedProps.status != "complete")
-          return;
-
-        chrome.tabs.onUpdated.removeListener(listener);
-
-        // Look through all views to find the window which will display
-        // the screenshot, query paramater assures that it is unique
-        var views = chrome.extension.getViews();
-        for (var i = 0; i < views.length; i++) {
-          var view = views[i];
-          if (view.location.href == viewTabUrl) {
-            view.setScreenshotUrl(screenshotUrl);
-            break;
-          }
-        }
-      });
-
-      chrome.tabs.create({ url: viewTabUrl }, function (tab) {
-        targetId = tab.id;
-      });
+          chrome.tabs.create({ url: viewTabUrl }, function (tab) {
+            targetId = tab.id;
+          });    
+      }
     });
   }
 
diff --git a/css/cropper.css b/css/cropper.css
new file mode 100644
index 0000000..d09c4f1
--- /dev/null
+++ b/css/cropper.css
@@ -0,0 +1,290 @@
+:root {
+  --blue: #39f;
+}
+
+.cropper-container {
+  direction: ltr;
+  font-size: 0;
+  line-height: 0;
+  position: relative;
+  touch-action: none;
+  user-select: none;
+
+  & img {
+    /* Avoid margin top issue (Occur only when margin-top <= -height) */
+    display: block;
+    height: 100%;
+    image-orientation: 0deg;
+    max-height: none !important;
+    max-width: none !important;
+    min-height: 0 !important;
+    min-width: 0 !important;
+    width: 100%;
+  }
+}
+
+.cropper-wrap-box,
+.cropper-canvas,
+.cropper-drag-box,
+.cropper-crop-box,
+.cropper-modal {
+  bottom: 0;
+  left: 0;
+  position: absolute;
+  right: 0;
+  top: 0;
+}
+
+.cropper-wrap-box,
+.cropper-canvas {
+  overflow: hidden;
+}
+
+.cropper-drag-box {
+  background-color: #fff;
+  opacity: 0;
+}
+
+.cropper-modal {
+  background-color: #000;
+  opacity: .5;
+}
+
+.cropper-view-box {
+  display: block;
+  height: 100%;
+  outline-color: color(var(--blue) alpha(75%));
+  outline: 1px solid var(--blue);
+  overflow: hidden;
+  width: 100%;
+}
+
+.cropper-dashed {
+  border: 0 dashed #eee;
+  display: block;
+  opacity: .5;
+  position: absolute;
+
+  &.dashed-h {
+    border-bottom-width: 1px;
+    border-top-width: 1px;
+    height: calc(100 / 3)%;
+    left: 0;
+    top: calc(100 / 3)%;
+    width: 100%;
+  }
+
+  &.dashed-v {
+    border-left-width: 1px;
+    border-right-width: 1px;
+    height: 100%;
+    left: calc(100 / 3)%;
+    top: 0;
+    width: calc(100 / 3)%;
+  }
+}
+
+.cropper-center {
+  display: block;
+  height: 0;
+  left: 50%;
+  opacity: .75;
+  position: absolute;
+  top: 50%;
+  width: 0;
+
+  &:before,
+  &:after {
+    background-color: #eee;
+    content: ' ';
+    display: block;
+    position: absolute;
+  }
+
+  &:before {
+    height: 1px;
+    left: -3px;
+    top: 0;
+    width: 7px;
+  }
+
+  &:after {
+    height: 7px;
+    left: 0;
+    top: -3px;
+    width: 1px;
+  }
+}
+
+.cropper-face,
+.cropper-line,
+.cropper-point {
+  display: block;
+  height: 100%;
+  opacity: .1;
+  position: absolute;
+  width: 100%;
+}
+
+.cropper-face {
+  background-color: #fff;
+  left: 0;
+  top: 0;
+}
+
+.cropper-line {
+  background-color: var(--blue);
+
+  &.line-e {
+    cursor: ew-resize;
+    right: -3px;
+    top: 0;
+    width: 5px;
+  }
+
+  &.line-n {
+    cursor: ns-resize;
+    height: 5px;
+    left: 0;
+    top: -3px;
+  }
+
+  &.line-w {
+    cursor: ew-resize;
+    left: -3px;
+    top: 0;
+    width: 5px;
+  }
+
+  &.line-s {
+    bottom: -3px;
+    cursor: ns-resize;
+    height: 5px;
+    left: 0;
+  }
+}
+
+.cropper-point {
+  background-color: var(--blue);
+  height: 5px;
+  opacity: .75;
+  width: 5px;
+
+  &.point-e {
+    cursor: ew-resize;
+    margin-top: -3px;
+    right: -3px;
+    top: 50%;
+  }
+
+  &.point-n {
+    cursor: ns-resize;
+    left: 50%;
+    margin-left: -3px;
+    top: -3px;
+  }
+
+  &.point-w {
+    cursor: ew-resize;
+    left: -3px;
+    margin-top: -3px;
+    top: 50%;
+  }
+
+  &.point-s {
+    bottom: -3px;
+    cursor: s-resize;
+    left: 50%;
+    margin-left: -3px;
+  }
+
+  &.point-ne {
+    cursor: nesw-resize;
+    right: -3px;
+    top: -3px;
+  }
+
+  &.point-nw {
+    cursor: nwse-resize;
+    left: -3px;
+    top: -3px;
+  }
+
+  &.point-sw {
+    bottom: -3px;
+    cursor: nesw-resize;
+    left: -3px;
+  }
+
+  &.point-se {
+    bottom: -3px;
+    cursor: nwse-resize;
+    height: 20px;
+    opacity: 1;
+    right: -3px;
+    width: 20px;
+
+    @media (min-width: 768px) {
+      height: 15px;
+      width: 15px;
+    }
+
+    @media (min-width: 992px) {
+      height: 10px;
+      width: 10px;
+    }
+
+    @media (min-width: 1200px) {
+      height: 5px;
+      opacity: .75;
+      width: 5px;
+    }
+  }
+
+  &.point-se:before {
+    background-color: var(--blue);
+    bottom: -50%;
+    content: ' ';
+    display: block;
+    height: 200%;
+    opacity: 0;
+    position: absolute;
+    right: -50%;
+    width: 200%;
+  }
+}
+
+.cropper-invisible {
+  opacity: 0;
+}
+
+.cropper-bg {
+  background-image: url('../images/bg.png');
+}
+
+.cropper-hide {
+  display: block;
+  height: 0;
+  position: absolute;
+  width: 0;
+}
+
+.cropper-hidden {
+  display: none !important;
+}
+
+.cropper-move {
+  cursor: move;
+}
+
+.cropper-crop {
+  cursor: crosshair;
+}
+
+.cropper-disabled .cropper-drag-box,
+.cropper-disabled .cropper-face,
+.cropper-disabled .cropper-line,
+.cropper-disabled .cropper-point {
+  cursor: not-allowed;
+}
+
diff --git a/js/content_script.js b/js/content_script.js
new file mode 100644
index 0000000..451247b
--- /dev/null
+++ b/js/content_script.js
@@ -0,0 +1,104 @@
+/*Content Script 
+	It is used to execute/inject code on the webpage, 
+	as required for cropping interface for screenshot & reverse image search 
+	
+	It is injected by background script on user action
+*/
+console.log("callbackMethod : "+callbackMethod);
+
+//injecting croppingjs.css stylesheet to the webpage
+var link = document.createElement("link");
+link.rel="stylesheet";
+link.href="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/1.2.1/cropper.css";
+document.querySelector("head").appendChild(link);
+
+//hiding the webpage
+var body = document.querySelector("body");
+body.style.display="none";
+//creating a img inside div
+if(!document.querySelector("#cropping-tool")){
+	console.log("creating a new cropping tool div on page");
+	var div = document.createElement("div");
+	div.id="cropping-tool"
+	div.style.height="100%";
+	div.style.width="100%";
+	div.position="absolute";
+	div.top="0";
+	div.bottom="0";
+	div.style.background="yellow";
+	var div2 = document.createElement("div");
+	div2.style.height="100%";
+	div2.style.width="100%";
+	var img = document.createElement("img");
+	img.src=imageurl;
+	img.id="image";
+	img.style["max-width"]="100%";
+	var button = document.createElement("input");
+	button.setAttribute("value","Crop");
+	button.setAttribute("type","button");
+	//button.setAttribute("onclick","doneCropping(cropper)");
+	div2.appendChild(img);
+	div.appendChild(div2);
+	//div.appendChild(button);
+	document.querySelector("html").appendChild(div);
+	
+	/*creating a cropper tool*/
+	var image = document.getElementById('image');
+	var cropper = new Cropper(image, {
+	  autoCrop: true,
+	  zoomable: false,
+	  movable: false,
+	  rotatable: false,
+	  cropend: function(e) {
+	  	//crop end event listener
+	    /*console.log(e.detail.x);
+	    console.log(e.detail.y);
+	    console.log(e.detail.width);
+	    console.log(e.detail.height);
+	    console.log(e.detail.rotate);
+	    console.log(e.detail.scaleX);
+	    console.log(e.detail.scaleY);
+	  	
+	  	/*passing 'e' back to background page for further processing*/
+	  	//e
+	  }
+	});
+
+	//function to handle key press event on cropping interface 
+	function handleKeyPress(e){
+		// use e.keyCode
+		console.log("------------------- Image Cropped!! ---------------------");
+		var i = cropper.getCroppedCanvas().toDataURL('image/jpeg');
+
+		/*make the webpage visible again*/
+	    document.querySelector("body").removeAttribute("style");
+	
+	    //removing key listener
+		document.removeEventListener("keyup", handleKeyPress);
+
+		/*remove div#cropping-tool element*/
+	    document.querySelector("#cropping-tool").remove();
+	    
+	    //send message to background script with cropped image
+		chrome.runtime.sendMessage({callbackMethod: callbackMethod, croppedImage: i}, function(response) {
+		  //do nothing 
+		});
+		console.log("cropped image sent to background script");
+	};
+
+	//adding event listener for key press event on cropping interface
+	document.addEventListener("keyup", handleKeyPress);
+
+	//this button listener can be used if required later on
+	/*button.addEventListener('click', function doneCropping(e){
+		console.log("------------------- Image Cropped!! ---------------------");
+		var i = cropper.getCroppedCanvas().toDataURL('image/jpeg');
+		document.getElementById("cropping-tool").remove();
+		var ig = document.createElement('img');
+		ig.src=i;
+		document.querySelector("html").appendChild(ig);
+		console.log(i);
+	}, true);*/
+	
+	alert("Use cursor for selecting region from image, then press any key to Crop!");
+}
\ No newline at end of file
diff --git a/js/cropperjs/change.js b/js/cropperjs/change.js
new file mode 100644
index 0000000..014222e
--- /dev/null
+++ b/js/cropperjs/change.js
@@ -0,0 +1,471 @@
+import {
+  ACTION_ALL,
+  ACTION_CROP,
+  ACTION_EAST,
+  ACTION_MOVE,
+  ACTION_NORTH,
+  ACTION_NORTH_EAST,
+  ACTION_NORTH_WEST,
+  ACTION_SOUTH,
+  ACTION_SOUTH_EAST,
+  ACTION_SOUTH_WEST,
+  ACTION_WEST,
+  ACTION_ZOOM,
+  CLASS_HIDDEN,
+} from './constants';
+import {
+  each,
+  getMaxZoomRatio,
+  getOffset,
+  removeClass,
+} from './utilities';
+
+export default {
+  change(e) {
+    const {
+      options,
+      canvasData,
+      containerData,
+      cropBoxData,
+      pointers,
+    } = this;
+    let { action } = this;
+    let { aspectRatio } = options;
+    let {
+      left,
+      top,
+      width,
+      height,
+    } = cropBoxData;
+    const right = left + width;
+    const bottom = top + height;
+    let minLeft = 0;
+    let minTop = 0;
+    let maxWidth = containerData.width;
+    let maxHeight = containerData.height;
+    let renderable = true;
+    let offset;
+
+    // Locking aspect ratio in "free mode" by holding shift key
+    if (!aspectRatio && e.shiftKey) {
+      aspectRatio = width && height ? width / height : 1;
+    }
+
+    if (this.limited) {
+      ({ minLeft, minTop } = cropBoxData);
+      maxWidth = minLeft + Math.min(
+        containerData.width,
+        canvasData.width,
+        canvasData.left + canvasData.width,
+      );
+      maxHeight = minTop + Math.min(
+        containerData.height,
+        canvasData.height,
+        canvasData.top + canvasData.height,
+      );
+    }
+
+    const pointer = pointers[Object.keys(pointers)[0]];
+    const range = {
+      x: pointer.endX - pointer.startX,
+      y: pointer.endY - pointer.startY,
+    };
+    const check = (side) => {
+      switch (side) {
+        case ACTION_EAST:
+          if (right + range.x > maxWidth) {
+            range.x = maxWidth - right;
+          }
+
+          break;
+
+        case ACTION_WEST:
+          if (left + range.x < minLeft) {
+            range.x = minLeft - left;
+          }
+
+          break;
+
+        case ACTION_NORTH:
+          if (top + range.y < minTop) {
+            range.y = minTop - top;
+          }
+
+          break;
+
+        case ACTION_SOUTH:
+          if (bottom + range.y > maxHeight) {
+            range.y = maxHeight - bottom;
+          }
+
+          break;
+
+        default:
+      }
+    };
+
+    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;
+        }
+
+        check(ACTION_EAST);
+        width += range.x;
+
+        if (aspectRatio) {
+          height = width / aspectRatio;
+          top -= (range.x / aspectRatio) / 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;
+        }
+
+        check(ACTION_NORTH);
+        height -= range.y;
+        top += range.y;
+
+        if (aspectRatio) {
+          width = height * aspectRatio;
+          left += (range.y * aspectRatio) / 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;
+        }
+
+        check(ACTION_WEST);
+        width -= range.x;
+        left += range.x;
+
+        if (aspectRatio) {
+          height = width / aspectRatio;
+          top += (range.x / aspectRatio) / 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;
+        }
+
+        check(ACTION_SOUTH);
+        height += range.y;
+
+        if (aspectRatio) {
+          width = height * aspectRatio;
+          left -= (range.y * aspectRatio) / 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;
+          }
+
+          check(ACTION_NORTH);
+          height -= range.y;
+          top += range.y;
+          width = height * aspectRatio;
+        } else {
+          check(ACTION_NORTH);
+          check(ACTION_EAST);
+
+          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;
+          }
+
+          check(ACTION_NORTH);
+          height -= range.y;
+          top += range.y;
+          width = height * aspectRatio;
+          left += range.y * aspectRatio;
+        } else {
+          check(ACTION_NORTH);
+          check(ACTION_WEST);
+
+          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;
+          }
+
+          check(ACTION_WEST);
+          width -= range.x;
+          left += range.x;
+          height = width / aspectRatio;
+        } else {
+          check(ACTION_SOUTH);
+          check(ACTION_WEST);
+
+          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;
+          }
+
+          check(ACTION_EAST);
+          width += range.x;
+          height = width / aspectRatio;
+        } else {
+          check(ACTION_SOUTH);
+          check(ACTION_EAST);
+
+          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(getMaxZoomRatio(pointers), e);
+        renderable = false;
+        break;
+
+      // Create crop box
+      case ACTION_CROP:
+        if (!range.x || !range.y) {
+          renderable = false;
+          break;
+        }
+
+        offset = getOffset(this.cropper);
+        left = pointer.startX - offset.left;
+        top = pointer.startY - offset.top;
+        width = cropBoxData.minWidth;
+        height = cropBoxData.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.cropped) {
+          removeClass(this.cropBox, CLASS_HIDDEN);
+          this.cropped = true;
+
+          if (this.limited) {
+            this.limitCropBox(true, true);
+          }
+        }
+
+        break;
+
+      default:
+    }
+
+    if (renderable) {
+      cropBoxData.width = width;
+      cropBoxData.height = height;
+      cropBoxData.left = left;
+      cropBoxData.top = top;
+      this.action = action;
+      this.renderCropBox();
+    }
+
+    // Override
+    each(pointers, (p) => {
+      p.startX = p.endX;
+      p.startY = p.endY;
+    });
+  },
+};
diff --git a/js/cropperjs/constants.js b/js/cropperjs/constants.js
new file mode 100644
index 0000000..1aa994f
--- /dev/null
+++ b/js/cropperjs/constants.js
@@ -0,0 +1,56 @@
+export const WINDOW = typeof window !== 'undefined' ? window : {};
+export const NAMESPACE = 'cropper';
+
+// Actions
+export const ACTION_ALL = 'all';
+export const ACTION_CROP = 'crop';
+export const ACTION_MOVE = 'move';
+export const ACTION_ZOOM = 'zoom';
+export const ACTION_EAST = 'e';
+export const ACTION_WEST = 'w';
+export const ACTION_SOUTH = 's';
+export const ACTION_NORTH = 'n';
+export const ACTION_NORTH_EAST = 'ne';
+export const ACTION_NORTH_WEST = 'nw';
+export const ACTION_SOUTH_EAST = 'se';
+export const ACTION_SOUTH_WEST = 'sw';
+
+// Classes
+export const CLASS_CROP = `${NAMESPACE}-crop`;
+export const CLASS_DISABLED = `${NAMESPACE}-disabled`;
+export const CLASS_HIDDEN = `${NAMESPACE}-hidden`;
+export const CLASS_HIDE = `${NAMESPACE}-hide`;
+export const CLASS_INVISIBLE = `${NAMESPACE}-invisible`;
+export const CLASS_MODAL = `${NAMESPACE}-modal`;
+export const CLASS_MOVE = `${NAMESPACE}-move`;
+
+// Data keys
+export const DATA_ACTION = 'action';
+export const DATA_PREVIEW = 'preview';
+
+// Drag modes
+export const DRAG_MODE_CROP = 'crop';
+export const DRAG_MODE_MOVE = 'move';
+export const DRAG_MODE_NONE = 'none';
+
+// Events
+export const EVENT_CROP = 'crop';
+export const EVENT_CROP_END = 'cropend';
+export const EVENT_CROP_MOVE = 'cropmove';
+export const EVENT_CROP_START = 'cropstart';
+export const EVENT_DBLCLICK = 'dblclick';
+export const EVENT_ERROR = 'error';
+export const EVENT_LOAD = 'load';
+export const EVENT_POINTER_DOWN = WINDOW.PointerEvent ? 'pointerdown' : 'touchstart mousedown';
+export const EVENT_POINTER_MOVE = WINDOW.PointerEvent ? 'pointermove' : 'touchmove mousemove';
+export const EVENT_POINTER_UP = WINDOW.PointerEvent ? 'pointerup pointercancel' : 'touchend touchcancel mouseup';
+export const EVENT_READY = 'ready';
+export const EVENT_RESIZE = 'resize';
+export const EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';
+export const EVENT_ZOOM = 'zoom';
+
+// RegExps
+export const REGEXP_ACTIONS = /^(e|w|s|n|se|sw|ne|nw|all|crop|move|zoom)$/;
+export const REGEXP_DATA_URL = /^data:/;
+export const REGEXP_DATA_URL_JPEG = /^data:image\/jpeg;base64,/;
+export const REGEXP_TAG_NAME = /^(img|canvas)$/i;
diff --git a/js/cropperjs/cropper.js b/js/cropperjs/cropper.js
new file mode 100644
index 0000000..98243db
--- /dev/null
+++ b/js/cropperjs/cropper.js
@@ -0,0 +1,3758 @@
+/*!
+ * Cropper.js v1.2.1
+ * https://github.com/fengyuanchen/cropperjs
+ *
+ * Copyright (c) 2015-2017 Chen Fengyuan
+ * Released under the MIT license
+ *
+ * Date: 2017-12-17T10:34:04.181Z
+ */
+
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	(global.Cropper = factory());
+}(this, (function () { 'use strict';
+
+var WINDOW = typeof window !== 'undefined' ? window : {};
+var NAMESPACE = 'cropper';
+
+// Actions
+var ACTION_ALL = 'all';
+var ACTION_CROP = 'crop';
+var ACTION_MOVE = 'move';
+var ACTION_ZOOM = 'zoom';
+var ACTION_EAST = 'e';
+var ACTION_WEST = 'w';
+var ACTION_SOUTH = 's';
+var ACTION_NORTH = 'n';
+var ACTION_NORTH_EAST = 'ne';
+var ACTION_NORTH_WEST = 'nw';
+var ACTION_SOUTH_EAST = 'se';
+var ACTION_SOUTH_WEST = 'sw';
+
+// Classes
+var CLASS_CROP = NAMESPACE + '-crop';
+var CLASS_DISABLED = NAMESPACE + '-disabled';
+var CLASS_HIDDEN = NAMESPACE + '-hidden';
+var CLASS_HIDE = NAMESPACE + '-hide';
+var CLASS_INVISIBLE = NAMESPACE + '-invisible';
+var CLASS_MODAL = NAMESPACE + '-modal';
+var CLASS_MOVE = NAMESPACE + '-move';
+
+// Data keys
+var DATA_ACTION = 'action';
+var DATA_PREVIEW = 'preview';
+
+// Drag modes
+var DRAG_MODE_CROP = 'crop';
+var DRAG_MODE_MOVE = 'move';
+var DRAG_MODE_NONE = 'none';
+
+// Events
+var EVENT_CROP = 'crop';
+var EVENT_CROP_END = 'cropend';
+var EVENT_CROP_MOVE = 'cropmove';
+var EVENT_CROP_START = 'cropstart';
+var EVENT_DBLCLICK = 'dblclick';
+var EVENT_ERROR = 'error';
+var EVENT_LOAD = 'load';
+var EVENT_POINTER_DOWN = WINDOW.PointerEvent ? 'pointerdown' : 'touchstart mousedown';
+var EVENT_POINTER_MOVE = WINDOW.PointerEvent ? 'pointermove' : 'touchmove mousemove';
+var EVENT_POINTER_UP = WINDOW.PointerEvent ? 'pointerup pointercancel' : 'touchend touchcancel mouseup';
+var EVENT_READY = 'ready';
+var EVENT_RESIZE = 'resize';
+var EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';
+var EVENT_ZOOM = 'zoom';
+
+// 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_JPEG = /^data:image\/jpeg;base64,/;
+var REGEXP_TAG_NAME = /^(img|canvas)$/i;
+
+var DEFAULTS = {
+  // Define the view mode of the cropper
+  viewMode: 0, // 0, 1, 2, 3
+
+  // Define the dragging mode of the cropper
+  dragMode: DRAG_MODE_CROP, // 'crop', 'move' or 'none'
+
+  // Define the aspect ratio of the crop box
+  aspectRatio: NaN,
+
+  // An object with the previous cropping result data
+  data: null,
+
+  // A selector for adding extra containers to preview
+  preview: '',
+
+  // Re-render the cropper when resize the window
+  responsive: true,
+
+  // Restore the cropped area after resize the window
+  restore: true,
+
+  // Check if the current image is a cross-origin image
+  checkCrossOrigin: true,
+
+  // Check the current image's Exif Orientation information
+  checkOrientation: true,
+
+  // Show the black modal
+  modal: true,
+
+  // Show the dashed lines for guiding
+  guides: true,
+
+  // Show the center indicator for guiding
+  center: true,
+
+  // Show the white modal to highlight the crop box
+  highlight: true,
+
+  // Show the grid background
+  background: true,
+
+  // Enable to crop the image automatically when initialize
+  autoCrop: true,
+
+  // Define the percentage of automatic cropping area when initializes
+  autoCropArea: 0.8,
+
+  // Enable to move the image
+  movable: true,
+
+  // Enable to rotate the image
+  rotatable: true,
+
+  // Enable to scale the image
+  scalable: true,
+
+  // Enable to zoom the image
+  zoomable: true,
+
+  // Enable to zoom the image by dragging touch
+  zoomOnTouch: true,
+
+  // Enable to zoom the image by wheeling mouse
+  zoomOnWheel: true,
+
+  // Define zoom ratio when zoom the image by wheeling mouse
+  wheelZoomRatio: 0.1,
+
+  // Enable to move the crop box
+  cropBoxMovable: true,
+
+  // Enable to resize the crop box
+  cropBoxResizable: true,
+
+  // Toggle drag mode between "crop" and "move" when click twice on the cropper
+  toggleDragModeOnDblclick: true,
+
+  // Size limitation
+  minCanvasWidth: 0,
+  minCanvasHeight: 0,
+  minCropBoxWidth: 0,
+  minCropBoxHeight: 0,
+  minContainerWidth: 200,
+  minContainerHeight: 100,
+
+  // Shortcuts of events
+  ready: null,
+  cropstart: null,
+  cropmove: null,
+  cropend: null,
+  crop: null,
+  zoom: null
+};
+
+var 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>';
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
+  return typeof obj;
+} : function (obj) {
+  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
+};
+
+
+
+
+
+
+
+
+
+
+
+var classCallCheck = function (instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+};
+
+var createClass = function () {
+  function defineProperties(target, props) {
+    for (var i = 0; i < props.length; i++) {
+      var descriptor = props[i];
+      descriptor.enumerable = descriptor.enumerable || false;
+      descriptor.configurable = true;
+      if ("value" in descriptor) descriptor.writable = true;
+      Object.defineProperty(target, descriptor.key, descriptor);
+    }
+  }
+
+  return function (Constructor, protoProps, staticProps) {
+    if (protoProps) defineProperties(Constructor.prototype, protoProps);
+    if (staticProps) defineProperties(Constructor, staticProps);
+    return Constructor;
+  };
+}();
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+var toConsumableArray = function (arr) {
+  if (Array.isArray(arr)) {
+    for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];
+
+    return arr2;
+  } else {
+    return Array.from(arr);
+  }
+};
+
+/**
+ * Check if the given value is not a number.
+ */
+var isNaN = Number.isNaN || WINDOW.isNaN;
+
+/**
+ * Check if the given value is a number.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a number, else `false`.
+ */
+function isNumber(value) {
+  return typeof value === 'number' && !isNaN(value);
+}
+
+/**
+ * Check if the given value is undefined.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is undefined, else `false`.
+ */
+function isUndefined(value) {
+  return typeof value === 'undefined';
+}
+
+/**
+ * Check if the given value is an object.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is an object, else `false`.
+ */
+function isObject(value) {
+  return (typeof value === 'undefined' ? 'undefined' : _typeof(value)) === 'object' && value !== null;
+}
+
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+
+/**
+ * Check if the given value is a plain object.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a plain object, else `false`.
+ */
+
+function isPlainObject(value) {
+  if (!isObject(value)) {
+    return false;
+  }
+
+  try {
+    var _constructor = value.constructor;
+    var prototype = _constructor.prototype;
+
+
+    return _constructor && prototype && hasOwnProperty.call(prototype, 'isPrototypeOf');
+  } catch (e) {
+    return false;
+  }
+}
+
+/**
+ * Check if the given value is a function.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a function, else `false`.
+ */
+function isFunction(value) {
+  return typeof value === 'function';
+}
+
+/**
+ * Iterate the given data.
+ * @param {*} data - The data to iterate.
+ * @param {Function} callback - The process function for each element.
+ * @returns {*} The original data.
+ */
+function each(data, callback) {
+  if (data && isFunction(callback)) {
+    if (Array.isArray(data) || isNumber(data.length) /* array-like */) {
+        var length = data.length;
+
+        var i = void 0;
+
+        for (i = 0; i < length; i += 1) {
+          if (callback.call(data, data[i], i, data) === false) {
+            break;
+          }
+        }
+      } else if (isObject(data)) {
+      Object.keys(data).forEach(function (key) {
+        callback.call(data, data[key], key, data);
+      });
+    }
+  }
+
+  return data;
+}
+
+/**
+ * Extend the given object.
+ * @param {*} obj - The object to be extended.
+ * @param {*} args - The rest objects which will be merged to the first object.
+ * @returns {Object} The extended object.
+ */
+function extend(obj) {
+  for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    args[_key - 1] = arguments[_key];
+  }
+
+  if (isObject(obj) && args.length > 0) {
+    if (Object.assign) {
+      return Object.assign.apply(Object, [obj].concat(args));
+    }
+
+    args.forEach(function (arg) {
+      if (isObject(arg)) {
+        Object.keys(arg).forEach(function (key) {
+          obj[key] = arg[key];
+        });
+      }
+    });
+  }
+
+  return obj;
+}
+
+/**
+ * Takes a function and returns a new one that will always have a particular context.
+ * @param {Function} fn - The target function.
+ * @param {Object} context - The new context for the function.
+ * @returns {boolean} The new function.
+ */
+function proxy(fn, context) {
+  for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
+    args[_key2 - 2] = arguments[_key2];
+  }
+
+  return function () {
+    for (var _len3 = arguments.length, args2 = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
+      args2[_key3] = arguments[_key3];
+    }
+
+    return fn.apply(context, args.concat(args2));
+  };
+}
+
+var REGEXP_DECIMALS = /\.\d*(?:0|9){12}\d*$/i;
+
+/**
+ * Normalize decimal number.
+ * Check out {@link http://0.30000000000000004.com/ }
+ * @param {number} value - The value to normalize.
+ * @param {number} [times=100000000000] - The times for normalizing.
+ * @returns {number} Returns the normalized number.
+ */
+function normalizeDecimalNumber(value) {
+  var times = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 100000000000;
+
+  return REGEXP_DECIMALS.test(value) ? Math.round(value * times) / times : value;
+}
+
+var REGEXP_SUFFIX = /^(width|height|left|top|marginLeft|marginTop)$/;
+
+/**
+ * Apply styles to the given element.
+ * @param {Element} element - The target element.
+ * @param {Object} styles - The styles for applying.
+ */
+function setStyle(element, styles) {
+  var style = element.style;
+
+
+  each(styles, function (value, property) {
+    if (REGEXP_SUFFIX.test(property) && isNumber(value)) {
+      value += 'px';
+    }
+
+    style[property] = value;
+  });
+}
+
+/**
+ * Check if the given element has a special class.
+ * @param {Element} element - The element to check.
+ * @param {string} value - The class to search.
+ * @returns {boolean} Returns `true` if the special class was found.
+ */
+function hasClass(element, value) {
+  return element.classList ? element.classList.contains(value) : element.className.indexOf(value) > -1;
+}
+
+/**
+ * Add classes to the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be added.
+ */
+function addClass(element, value) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    each(element, function (elem) {
+      addClass(elem, value);
+    });
+    return;
+  }
+
+  if (element.classList) {
+    element.classList.add(value);
+    return;
+  }
+
+  var className = element.className.trim();
+
+  if (!className) {
+    element.className = value;
+  } else if (className.indexOf(value) < 0) {
+    element.className = className + ' ' + value;
+  }
+}
+
+/**
+ * Remove classes from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be removed.
+ */
+function removeClass(element, value) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    each(element, function (elem) {
+      removeClass(elem, value);
+    });
+    return;
+  }
+
+  if (element.classList) {
+    element.classList.remove(value);
+    return;
+  }
+
+  if (element.className.indexOf(value) >= 0) {
+    element.className = element.className.replace(value, '');
+  }
+}
+
+/**
+ * Add or remove classes from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be toggled.
+ * @param {boolean} added - Add only.
+ */
+function toggleClass(element, value, added) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    each(element, function (elem) {
+      toggleClass(elem, value, added);
+    });
+    return;
+  }
+
+  // IE10-11 doesn't support the second parameter of `classList.toggle`
+  if (added) {
+    addClass(element, value);
+  } else {
+    removeClass(element, value);
+  }
+}
+
+var REGEXP_HYPHENATE = /([a-z\d])([A-Z])/g;
+
+/**
+ * Hyphenate the given value.
+ * @param {string} value - The value to hyphenate.
+ * @returns {string} The hyphenated value.
+ */
+function hyphenate(value) {
+  return value.replace(REGEXP_HYPHENATE, '$1-$2').toLowerCase();
+}
+
+/**
+ * Get data from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to get.
+ * @returns {string} The data value.
+ */
+function getData(element, name) {
+  if (isObject(element[name])) {
+    return element[name];
+  } else if (element.dataset) {
+    return element.dataset[name];
+  }
+
+  return element.getAttribute('data-' + hyphenate(name));
+}
+
+/**
+ * Set data to the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to set.
+ * @param {string} data - The data value.
+ */
+function setData(element, name, data) {
+  if (isObject(data)) {
+    element[name] = data;
+  } else if (element.dataset) {
+    element.dataset[name] = data;
+  } else {
+    element.setAttribute('data-' + hyphenate(name), data);
+  }
+}
+
+/**
+ * Remove data from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to remove.
+ */
+function removeData(element, name) {
+  if (isObject(element[name])) {
+    try {
+      delete element[name];
+    } catch (e) {
+      element[name] = null;
+    }
+  } else if (element.dataset) {
+    // #128 Safari not allows to delete dataset property
+    try {
+      delete element.dataset[name];
+    } catch (e) {
+      element.dataset[name] = null;
+    }
+  } else {
+    element.removeAttribute('data-' + hyphenate(name));
+  }
+}
+
+var REGEXP_SPACES = /\s+/;
+
+/**
+ * Remove event listener from the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Function} listener - The event listener.
+ * @param {Object} options - The event options.
+ */
+function removeListener(element, type, listener) {
+  var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
+
+  if (!isFunction(listener)) {
+    return;
+  }
+
+  var types = type.trim().split(REGEXP_SPACES);
+
+  if (types.length > 1) {
+    each(types, function (t) {
+      removeListener(element, t, listener, options);
+    });
+    return;
+  }
+
+  if (element.removeEventListener) {
+    element.removeEventListener(type, listener, options);
+  } else if (element.detachEvent) {
+    element.detachEvent('on' + type, listener);
+  }
+}
+
+/**
+ * Add event listener to the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Function} listener - The event listener.
+ * @param {Object} options - The event options.
+ */
+function addListener(element, type, _listener) {
+  var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
+
+  if (!isFunction(_listener)) {
+    return;
+  }
+
+  var types = type.trim().split(REGEXP_SPACES);
+
+  if (types.length > 1) {
+    each(types, function (t) {
+      addListener(element, t, _listener, options);
+    });
+    return;
+  }
+
+  if (options.once) {
+    var originalListener = _listener;
+
+    _listener = function listener() {
+      for (var _len4 = arguments.length, args = Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
+        args[_key4] = arguments[_key4];
+      }
+
+      removeListener(element, type, _listener, options);
+      return originalListener.apply(element, args);
+    };
+  }
+
+  if (element.addEventListener) {
+    element.addEventListener(type, _listener, options);
+  } else if (element.attachEvent) {
+    element.attachEvent('on' + type, _listener);
+  }
+}
+
+/**
+ * Dispatch event on the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Object} data - The additional event data.
+ * @returns {boolean} Indicate if the event is default prevented or not.
+ */
+function dispatchEvent(element, type, data) {
+  if (element.dispatchEvent) {
+    var event = void 0;
+
+    // Event and CustomEvent on IE9-11 are global objects, not constructors
+    if (isFunction(Event) && isFunction(CustomEvent)) {
+      if (isUndefined(data)) {
+        event = new Event(type, {
+          bubbles: true,
+          cancelable: true
+        });
+      } else {
+        event = new CustomEvent(type, {
+          detail: data,
+          bubbles: true,
+          cancelable: true
+        });
+      }
+    } else if (isUndefined(data)) {
+      event = document.createEvent('Event');
+      event.initEvent(type, true, true);
+    } else {
+      event = document.createEvent('CustomEvent');
+      event.initCustomEvent(type, true, true, data);
+    }
+
+    // IE9+
+    return element.dispatchEvent(event);
+  } else if (element.fireEvent) {
+    // IE6-10 (native events only)
+    return element.fireEvent('on' + type);
+  }
+
+  return true;
+}
+
+/**
+ * Get the offset base on the document.
+ * @param {Element} element - The target element.
+ * @returns {Object} The offset data.
+ */
+function getOffset(element) {
+  var doc = document.documentElement;
+  var box = element.getBoundingClientRect();
+
+  return {
+    left: box.left + ((window.scrollX || doc && doc.scrollLeft || 0) - (doc && doc.clientLeft || 0)),
+    top: box.top + ((window.scrollY || doc && doc.scrollTop || 0) - (doc && doc.clientTop || 0))
+  };
+}
+
+/**
+ * Empty an element.
+ * @param {Element} element - The element to empty.
+ */
+function empty(element) {
+  while (element.firstChild) {
+    element.removeChild(element.firstChild);
+  }
+}
+
+var location = WINDOW.location;
+
+var REGEXP_ORIGINS = /^(https?:)\/\/([^:/?#]+):?(\d*)/i;
+
+/**
+ * Check if the given URL is a cross origin URL.
+ * @param {string} url - The target URL.
+ * @returns {boolean} Returns `true` if the given URL is a cross origin URL, else `false`.
+ */
+function isCrossOriginURL(url) {
+  var parts = url.match(REGEXP_ORIGINS);
+
+  return parts && (parts[1] !== location.protocol || parts[2] !== location.hostname || parts[3] !== location.port);
+}
+
+/**
+ * Add timestamp to the given URL.
+ * @param {string} url - The target URL.
+ * @returns {string} The result URL.
+ */
+function addTimestamp(url) {
+  var timestamp = 'timestamp=' + new Date().getTime();
+
+  return url + (url.indexOf('?') === -1 ? '?' : '&') + timestamp;
+}
+
+/**
+ * Get transforms base on the given object.
+ * @param {Object} obj - The target object.
+ * @returns {string} A string contains transform values.
+ */
+function getTransforms(_ref) {
+  var rotate = _ref.rotate,
+      scaleX = _ref.scaleX,
+      scaleY = _ref.scaleY,
+      translateX = _ref.translateX,
+      translateY = _ref.translateY;
+
+  var values = [];
+
+  if (isNumber(translateX) && translateX !== 0) {
+    values.push('translateX(' + translateX + 'px)');
+  }
+
+  if (isNumber(translateY) && translateY !== 0) {
+    values.push('translateY(' + translateY + 'px)');
+  }
+
+  // Rotate should come first before scale to match orientation transform
+  if (isNumber(rotate) && rotate !== 0) {
+    values.push('rotate(' + rotate + 'deg)');
+  }
+
+  if (isNumber(scaleX) && scaleX !== 1) {
+    values.push('scaleX(' + scaleX + ')');
+  }
+
+  if (isNumber(scaleY) && scaleY !== 1) {
+    values.push('scaleY(' + scaleY + ')');
+  }
+
+  var transform = values.length ? values.join(' ') : 'none';
+
+  return {
+    WebkitTransform: transform,
+    msTransform: transform,
+    transform: transform
+  };
+}
+
+var navigator = WINDOW.navigator;
+
+var IS_SAFARI_OR_UIWEBVIEW = navigator && /(Macintosh|iPhone|iPod|iPad).*AppleWebKit/i.test(navigator.userAgent);
+
+/**
+ * Get an image's natural sizes.
+ * @param {string} image - The target image.
+ * @param {Function} callback - The callback function.
+ */
+function getImageNaturalSizes(image, callback) {
+  // Modern browsers (except Safari)
+  if (image.naturalWidth && !IS_SAFARI_OR_UIWEBVIEW) {
+    callback(image.naturalWidth, image.naturalHeight);
+    return;
+  }
+
+  var newImage = document.createElement('img');
+  var body = document.body || document.documentElement;
+
+  newImage.onload = function () {
+    callback(newImage.width, newImage.height);
+    body.removeChild(newImage);
+  };
+
+  newImage.src = image.src;
+  newImage.style.cssText = 'position: absolute; top: 0; left: 0; z-index: -1; opacity: 0;';
+  body.appendChild(newImage);
+}
+
+/**
+ * Get the max ratio of a group of pointers.
+ * @param {string} pointers - The target pointers.
+ * @returns {number} The result ratio.
+ */
+function getMaxZoomRatio(pointers) {
+  var pointers2 = extend({}, pointers);
+  var ratios = [];
+
+  each(pointers, function (pointer, pointerId) {
+    delete pointers2[pointerId];
+
+    each(pointers2, function (pointer2) {
+      var x1 = Math.abs(pointer.startX - pointer2.startX);
+      var y1 = Math.abs(pointer.startY - pointer2.startY);
+      var x2 = Math.abs(pointer.endX - pointer2.endX);
+      var y2 = Math.abs(pointer.endY - pointer2.endY);
+      var z1 = Math.sqrt(x1 * x1 + y1 * y1);
+      var z2 = Math.sqrt(x2 * x2 + y2 * y2);
+      var ratio = (z2 - z1) / z1;
+
+      ratios.push(ratio);
+    });
+  });
+
+  ratios.sort(function (a, b) {
+    return Math.abs(a) < Math.abs(b);
+  });
+
+  return ratios[0];
+}
+
+/**
+ * Get a pointer from an event object.
+ * @param {Object} event - The target event object.
+ * @param {boolean} endOnly - Indicates if only returns the end point coordinate or not.
+ * @returns {Object} The result pointer contains start and/or end point coordinates.
+ */
+function getPointer(_ref2, endOnly) {
+  var pageX = _ref2.pageX,
+      pageY = _ref2.pageY;
+
+  var end = {
+    endX: pageX,
+    endY: pageY
+  };
+
+  if (endOnly) {
+    return end;
+  }
+
+  return extend({
+    startX: pageX,
+    startY: pageY
+  }, end);
+}
+
+/**
+ * Get the center point coordinate of a group of pointers.
+ * @param {Object} pointers - The target pointers.
+ * @returns {Object} The center point coordinate.
+ */
+function getPointersCenter(pointers) {
+  var pageX = 0;
+  var pageY = 0;
+  var count = 0;
+
+  each(pointers, function (_ref3) {
+    var startX = _ref3.startX,
+        startY = _ref3.startY;
+
+    pageX += startX;
+    pageY += startY;
+    count += 1;
+  });
+
+  pageX /= count;
+  pageY /= count;
+
+  return {
+    pageX: pageX,
+    pageY: pageY
+  };
+}
+
+/**
+ * Check if the given value is a finite number.
+ */
+var isFinite = Number.isFinite || WINDOW.isFinite;
+
+/**
+ * Get the max sizes in a rectangle under the given aspect ratio.
+ * @param {Object} data - The original sizes.
+ * @returns {Object} The result sizes.
+ */
+function getContainSizes(_ref4) {
+  var aspectRatio = _ref4.aspectRatio,
+      height = _ref4.height,
+      width = _ref4.width;
+
+  var isValidNumber = function isValidNumber(value) {
+    return isFinite(value) && value > 0;
+  };
+
+  if (isValidNumber(width) && isValidNumber(height)) {
+    if (height * aspectRatio > width) {
+      height = width / aspectRatio;
+    } else {
+      width = height * aspectRatio;
+    }
+  } else if (isValidNumber(width)) {
+    height = width / aspectRatio;
+  } else if (isValidNumber(height)) {
+    width = height * aspectRatio;
+  }
+
+  return {
+    width: width,
+    height: height
+  };
+}
+
+/**
+ * Get the new sizes of a rectangle after rotated.
+ * @param {Object} data - The original sizes.
+ * @returns {Object} The result sizes.
+ */
+function getRotatedSizes(_ref5) {
+  var width = _ref5.width,
+      height = _ref5.height,
+      degree = _ref5.degree;
+
+  degree = Math.abs(degree) % 180;
+
+  if (degree === 90) {
+    return {
+      width: height,
+      height: width
+    };
+  }
+
+  var arc = degree % 90 * Math.PI / 180;
+  var sinArc = Math.sin(arc);
+  var cosArc = Math.cos(arc);
+  var newWidth = width * cosArc + height * sinArc;
+  var newHeight = width * sinArc + height * cosArc;
+
+  return degree > 90 ? {
+    width: newHeight,
+    height: newWidth
+  } : {
+    width: newWidth,
+    height: newHeight
+  };
+}
+
+/**
+ * Get a canvas which drew the given image.
+ * @param {HTMLImageElement} image - The image for drawing.
+ * @param {Object} imageData - The image data.
+ * @param {Object} canvasData - The canvas data.
+ * @param {Object} options - The options.
+ * @returns {HTMLCanvasElement} The result canvas.
+ */
+function getSourceCanvas(image, _ref6, _ref7, _ref8) {
+  var imageNaturalWidth = _ref6.naturalWidth,
+      imageNaturalHeight = _ref6.naturalHeight,
+      _ref6$rotate = _ref6.rotate,
+      rotate = _ref6$rotate === undefined ? 0 : _ref6$rotate,
+      _ref6$scaleX = _ref6.scaleX,
+      scaleX = _ref6$scaleX === undefined ? 1 : _ref6$scaleX,
+      _ref6$scaleY = _ref6.scaleY,
+      scaleY = _ref6$scaleY === undefined ? 1 : _ref6$scaleY;
+  var aspectRatio = _ref7.aspectRatio,
+      naturalWidth = _ref7.naturalWidth,
+      naturalHeight = _ref7.naturalHeight;
+  var _ref8$fillColor = _ref8.fillColor,
+      fillColor = _ref8$fillColor === undefined ? 'transparent' : _ref8$fillColor,
+      _ref8$imageSmoothingE = _ref8.imageSmoothingEnabled,
+      imageSmoothingEnabled = _ref8$imageSmoothingE === undefined ? true : _ref8$imageSmoothingE,
+      _ref8$imageSmoothingQ = _ref8.imageSmoothingQuality,
+      imageSmoothingQuality = _ref8$imageSmoothingQ === undefined ? 'low' : _ref8$imageSmoothingQ,
+      _ref8$maxWidth = _ref8.maxWidth,
+      maxWidth = _ref8$maxWidth === undefined ? Infinity : _ref8$maxWidth,
+      _ref8$maxHeight = _ref8.maxHeight,
+      maxHeight = _ref8$maxHeight === undefined ? Infinity : _ref8$maxHeight,
+      _ref8$minWidth = _ref8.minWidth,
+      minWidth = _ref8$minWidth === undefined ? 0 : _ref8$minWidth,
+      _ref8$minHeight = _ref8.minHeight,
+      minHeight = _ref8$minHeight === undefined ? 0 : _ref8$minHeight;
+
+  var canvas = document.createElement('canvas');
+  var context = canvas.getContext('2d');
+  var maxSizes = getContainSizes({
+    aspectRatio: aspectRatio,
+    width: maxWidth,
+    height: maxHeight
+  });
+  var minSizes = getContainSizes({
+    aspectRatio: aspectRatio,
+    width: minWidth,
+    height: minHeight
+  });
+  var width = Math.min(maxSizes.width, Math.max(minSizes.width, naturalWidth));
+  var height = Math.min(maxSizes.height, Math.max(minSizes.height, naturalHeight));
+  var params = [-imageNaturalWidth / 2, -imageNaturalHeight / 2, imageNaturalWidth, imageNaturalHeight];
+
+  canvas.width = normalizeDecimalNumber(width);
+  canvas.height = normalizeDecimalNumber(height);
+  context.fillStyle = fillColor;
+  context.fillRect(0, 0, width, height);
+  context.save();
+  context.translate(width / 2, height / 2);
+  context.rotate(rotate * Math.PI / 180);
+  context.scale(scaleX, scaleY);
+  context.imageSmoothingEnabled = imageSmoothingEnabled;
+  context.imageSmoothingQuality = imageSmoothingQuality;
+  context.drawImage.apply(context, [image].concat(toConsumableArray(params.map(function (param) {
+    return Math.floor(normalizeDecimalNumber(param));
+  }))));
+  context.restore();
+  return canvas;
+}
+
+var fromCharCode = String.fromCharCode;
+
+/**
+ * Get string from char code in data view.
+ * @param {DataView} dataView - The data view for read.
+ * @param {number} start - The start index.
+ * @param {number} length - The read length.
+ * @returns {string} The read result.
+ */
+
+function getStringFromCharCode(dataView, start, length) {
+  var str = '';
+  var i = void 0;
+
+  length += start;
+
+  for (i = start; i < length; i += 1) {
+    str += fromCharCode(dataView.getUint8(i));
+  }
+
+  return str;
+}
+
+var REGEXP_DATA_URL_HEAD = /^data:.*,/;
+
+/**
+ * Transform Data URL to array buffer.
+ * @param {string} dataURL - The Data URL to transform.
+ * @returns {ArrayBuffer} The result array buffer.
+ */
+function dataURLToArrayBuffer(dataURL) {
+  var base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, '');
+  var binary = atob(base64);
+  var arrayBuffer = new ArrayBuffer(binary.length);
+  var uint8 = new Uint8Array(arrayBuffer);
+
+  each(uint8, function (value, i) {
+    uint8[i] = binary.charCodeAt(i);
+  });
+
+  return arrayBuffer;
+}
+
+/**
+ * Transform array buffer to Data URL.
+ * @param {ArrayBuffer} arrayBuffer - The array buffer to transform.
+ * @param {string} mimeType - The mime type of the Data URL.
+ * @returns {string} The result Data URL.
+ */
+function arrayBufferToDataURL(arrayBuffer, mimeType) {
+  var uint8 = new Uint8Array(arrayBuffer);
+  var data = '';
+
+  // TypedArray.prototype.forEach is not supported in some browsers.
+  each(uint8, function (value) {
+    data += fromCharCode(value);
+  });
+
+  return 'data:' + mimeType + ';base64,' + btoa(data);
+}
+
+/**
+ * Get orientation value from given array buffer.
+ * @param {ArrayBuffer} arrayBuffer - The array buffer to read.
+ * @returns {number} The read orientation value.
+ */
+function getOrientation(arrayBuffer) {
+  var dataView = new DataView(arrayBuffer);
+  var orientation = void 0;
+  var littleEndian = void 0;
+  var app1Start = void 0;
+  var ifdStart = void 0;
+
+  // Only handle JPEG image (start by 0xFFD8)
+  if (dataView.getUint8(0) === 0xFF && dataView.getUint8(1) === 0xD8) {
+    var length = dataView.byteLength;
+    var offset = 2;
+
+    while (offset < length) {
+      if (dataView.getUint8(offset) === 0xFF && dataView.getUint8(offset + 1) === 0xE1) {
+        app1Start = offset;
+        break;
+      }
+
+      offset += 1;
+    }
+  }
+
+  if (app1Start) {
+    var exifIDCode = app1Start + 4;
+    var tiffOffset = app1Start + 10;
+
+    if (getStringFromCharCode(dataView, exifIDCode, 4) === 'Exif') {
+      var endianness = dataView.getUint16(tiffOffset);
+
+      littleEndian = endianness === 0x4949;
+
+      if (littleEndian || endianness === 0x4D4D /* bigEndian */) {
+          if (dataView.getUint16(tiffOffset + 2, littleEndian) === 0x002A) {
+            var firstIFDOffset = dataView.getUint32(tiffOffset + 4, littleEndian);
+
+            if (firstIFDOffset >= 0x00000008) {
+              ifdStart = tiffOffset + firstIFDOffset;
+            }
+          }
+        }
+    }
+  }
+
+  if (ifdStart) {
+    var _length = dataView.getUint16(ifdStart, littleEndian);
+    var _offset = void 0;
+    var i = void 0;
+
+    for (i = 0; i < _length; i += 1) {
+      _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
+          dataView.setUint16(_offset, 1, littleEndian);
+          break;
+        }
+    }
+  }
+
+  return orientation;
+}
+
+/**
+ * Parse Exif Orientation value.
+ * @param {number} orientation - The orientation to parse.
+ * @returns {Object} The parsed result.
+ */
+function parseOrientation(orientation) {
+  var rotate = 0;
+  var scaleX = 1;
+  var scaleY = 1;
+
+  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 and rotate right 90°
+    case 5:
+      rotate = 90;
+      scaleY = -1;
+      break;
+
+    // Rotate right 90°
+    case 6:
+      rotate = 90;
+      break;
+
+    // Flip horizontal and rotate right 90°
+    case 7:
+      rotate = 90;
+      scaleX = -1;
+      break;
+
+    // Rotate left 90°
+    case 8:
+      rotate = -90;
+      break;
+
+    default:
+  }
+
+  return {
+    rotate: rotate,
+    scaleX: scaleX,
+    scaleY: scaleY
+  };
+}
+
+var render = {
+  render: function render() {
+    this.initContainer();
+    this.initCanvas();
+    this.initCropBox();
+    this.renderCanvas();
+
+    if (this.cropped) {
+      this.renderCropBox();
+    }
+  },
+  initContainer: function initContainer() {
+    var element = this.element,
+        options = this.options,
+        container = this.container,
+        cropper = this.cropper;
+
+
+    addClass(cropper, CLASS_HIDDEN);
+    removeClass(element, CLASS_HIDDEN);
+
+    var containerData = {
+      width: Math.max(container.offsetWidth, Number(options.minContainerWidth) || 200),
+      height: Math.max(container.offsetHeight, Number(options.minContainerHeight) || 100)
+    };
+
+    this.containerData = containerData;
+
+    setStyle(cropper, {
+      width: containerData.width,
+      height: containerData.height
+    });
+
+    addClass(element, CLASS_HIDDEN);
+    removeClass(cropper, CLASS_HIDDEN);
+  },
+
+
+  // Canvas (image wrapper)
+  initCanvas: function initCanvas() {
+    var containerData = this.containerData,
+        imageData = this.imageData;
+    var viewMode = this.options.viewMode;
+
+    var rotated = Math.abs(imageData.rotate) % 180 === 90;
+    var naturalWidth = rotated ? imageData.naturalHeight : imageData.naturalWidth;
+    var naturalHeight = rotated ? imageData.naturalWidth : imageData.naturalHeight;
+    var aspectRatio = naturalWidth / naturalHeight;
+    var canvasWidth = containerData.width;
+    var canvasHeight = containerData.height;
+
+    if (containerData.height * aspectRatio > containerData.width) {
+      if (viewMode === 3) {
+        canvasWidth = containerData.height * aspectRatio;
+      } else {
+        canvasHeight = containerData.width / aspectRatio;
+      }
+    } else if (viewMode === 3) {
+      canvasHeight = containerData.width / aspectRatio;
+    } else {
+      canvasWidth = containerData.height * aspectRatio;
+    }
+
+    var canvasData = {
+      aspectRatio: aspectRatio,
+      naturalWidth: naturalWidth,
+      naturalHeight: naturalHeight,
+      width: canvasWidth,
+      height: canvasHeight
+    };
+
+    canvasData.left = (containerData.width - canvasWidth) / 2;
+    canvasData.top = (containerData.height - canvasHeight) / 2;
+    canvasData.oldLeft = canvasData.left;
+    canvasData.oldTop = canvasData.top;
+
+    this.canvasData = canvasData;
+    this.limited = viewMode === 1 || viewMode === 2;
+    this.limitCanvas(true, true);
+    this.initialImageData = extend({}, imageData);
+    this.initialCanvasData = extend({}, canvasData);
+  },
+  limitCanvas: function limitCanvas(sizeLimited, positionLimited) {
+    var options = this.options,
+        containerData = this.containerData,
+        canvasData = this.canvasData,
+        cropBoxData = this.cropBoxData;
+    var viewMode = options.viewMode;
+    var aspectRatio = canvasData.aspectRatio;
+
+    var cropped = this.cropped && cropBoxData;
+
+    if (sizeLimited) {
+      var minCanvasWidth = Number(options.minCanvasWidth) || 0;
+      var minCanvasHeight = Number(options.minCanvasHeight) || 0;
+
+      if (viewMode > 1) {
+        minCanvasWidth = Math.max(minCanvasWidth, containerData.width);
+        minCanvasHeight = Math.max(minCanvasHeight, containerData.height);
+
+        if (viewMode === 3) {
+          if (minCanvasHeight * aspectRatio > minCanvasWidth) {
+            minCanvasWidth = minCanvasHeight * aspectRatio;
+          } else {
+            minCanvasHeight = minCanvasWidth / aspectRatio;
+          }
+        }
+      } else if (viewMode > 0) {
+        if (minCanvasWidth) {
+          minCanvasWidth = Math.max(minCanvasWidth, cropped ? cropBoxData.width : 0);
+        } else if (minCanvasHeight) {
+          minCanvasHeight = Math.max(minCanvasHeight, cropped ? cropBoxData.height : 0);
+        } else if (cropped) {
+          minCanvasWidth = cropBoxData.width;
+          minCanvasHeight = cropBoxData.height;
+
+          if (minCanvasHeight * aspectRatio > minCanvasWidth) {
+            minCanvasWidth = minCanvasHeight * aspectRatio;
+          } else {
+            minCanvasHeight = minCanvasWidth / aspectRatio;
+          }
+        }
+      }
+
+      var _getContainSizes = getContainSizes({
+        aspectRatio: aspectRatio,
+        width: minCanvasWidth,
+        height: minCanvasHeight
+      });
+
+      minCanvasWidth = _getContainSizes.width;
+      minCanvasHeight = _getContainSizes.height;
+
+
+      canvasData.minWidth = minCanvasWidth;
+      canvasData.minHeight = minCanvasHeight;
+      canvasData.maxWidth = Infinity;
+      canvasData.maxHeight = Infinity;
+    }
+
+    if (positionLimited) {
+      if (viewMode) {
+        var newCanvasLeft = containerData.width - canvasData.width;
+        var newCanvasTop = containerData.height - canvasData.height;
+
+        canvasData.minLeft = Math.min(0, newCanvasLeft);
+        canvasData.minTop = Math.min(0, newCanvasTop);
+        canvasData.maxLeft = Math.max(0, newCanvasLeft);
+        canvasData.maxTop = Math.max(0, newCanvasTop);
+
+        if (cropped && this.limited) {
+          canvasData.minLeft = Math.min(cropBoxData.left, cropBoxData.left + (cropBoxData.width - canvasData.width));
+          canvasData.minTop = Math.min(cropBoxData.top, cropBoxData.top + (cropBoxData.height - canvasData.height));
+          canvasData.maxLeft = cropBoxData.left;
+          canvasData.maxTop = cropBoxData.top;
+
+          if (viewMode === 2) {
+            if (canvasData.width >= containerData.width) {
+              canvasData.minLeft = Math.min(0, newCanvasLeft);
+              canvasData.maxLeft = Math.max(0, newCanvasLeft);
+            }
+
+            if (canvasData.height >= containerData.height) {
+              canvasData.minTop = Math.min(0, newCanvasTop);
+              canvasData.maxTop = Math.max(0, newCanvasTop);
+            }
+          }
+        }
+      } else {
+        canvasData.minLeft = -canvasData.width;
+        canvasData.minTop = -canvasData.height;
+        canvasData.maxLeft = containerData.width;
+        canvasData.maxTop = containerData.height;
+      }
+    }
+  },
+  renderCanvas: function renderCanvas(changed, transformed) {
+    var canvasData = this.canvasData,
+        imageData = this.imageData;
+
+
+    if (transformed) {
+      var _getRotatedSizes = getRotatedSizes({
+        width: imageData.naturalWidth * Math.abs(imageData.scaleX || 1),
+        height: imageData.naturalHeight * Math.abs(imageData.scaleY || 1),
+        degree: imageData.rotate || 0
+      }),
+          naturalWidth = _getRotatedSizes.width,
+          naturalHeight = _getRotatedSizes.height;
+
+      var width = canvasData.width * (naturalWidth / canvasData.naturalWidth);
+      var height = canvasData.height * (naturalHeight / canvasData.naturalHeight);
+
+      canvasData.left -= (width - canvasData.width) / 2;
+      canvasData.top -= (height - canvasData.height) / 2;
+      canvasData.width = width;
+      canvasData.height = height;
+      canvasData.aspectRatio = naturalWidth / naturalHeight;
+      canvasData.naturalWidth = naturalWidth;
+      canvasData.naturalHeight = naturalHeight;
+      this.limitCanvas(true, false);
+    }
+
+    if (canvasData.width > canvasData.maxWidth || canvasData.width < canvasData.minWidth) {
+      canvasData.left = canvasData.oldLeft;
+    }
+
+    if (canvasData.height > canvasData.maxHeight || canvasData.height < canvasData.minHeight) {
+      canvasData.top = canvasData.oldTop;
+    }
+
+    canvasData.width = Math.min(Math.max(canvasData.width, canvasData.minWidth), canvasData.maxWidth);
+    canvasData.height = Math.min(Math.max(canvasData.height, canvasData.minHeight), canvasData.maxHeight);
+
+    this.limitCanvas(false, true);
+
+    canvasData.left = Math.min(Math.max(canvasData.left, canvasData.minLeft), canvasData.maxLeft);
+    canvasData.top = Math.min(Math.max(canvasData.top, canvasData.minTop), canvasData.maxTop);
+    canvasData.oldLeft = canvasData.left;
+    canvasData.oldTop = canvasData.top;
+
+    setStyle(this.canvas, extend({
+      width: canvasData.width,
+      height: canvasData.height
+    }, getTransforms({
+      translateX: canvasData.left,
+      translateY: canvasData.top
+    })));
+
+    this.renderImage(changed);
+
+    if (this.cropped && this.limited) {
+      this.limitCropBox(true, true);
+    }
+  },
+  renderImage: function renderImage(changed) {
+    var canvasData = this.canvasData,
+        imageData = this.imageData;
+
+    var width = imageData.naturalWidth * (canvasData.width / canvasData.naturalWidth);
+    var height = imageData.naturalHeight * (canvasData.height / canvasData.naturalHeight);
+
+    extend(imageData, {
+      width: width,
+      height: height,
+      left: (canvasData.width - width) / 2,
+      top: (canvasData.height - height) / 2
+    });
+    setStyle(this.image, extend({
+      width: imageData.width,
+      height: imageData.height
+    }, getTransforms(extend({
+      translateX: imageData.left,
+      translateY: imageData.top
+    }, imageData))));
+
+    if (changed) {
+      this.output();
+    }
+  },
+  initCropBox: function initCropBox() {
+    var options = this.options,
+        canvasData = this.canvasData;
+    var aspectRatio = options.aspectRatio;
+
+    var autoCropArea = Number(options.autoCropArea) || 0.8;
+    var cropBoxData = {
+      width: canvasData.width,
+      height: canvasData.height
+    };
+
+    if (aspectRatio) {
+      if (canvasData.height * aspectRatio > canvasData.width) {
+        cropBoxData.height = cropBoxData.width / aspectRatio;
+      } else {
+        cropBoxData.width = cropBoxData.height * aspectRatio;
+      }
+    }
+
+    this.cropBoxData = cropBoxData;
+    this.limitCropBox(true, true);
+
+    // Initialize auto crop area
+    cropBoxData.width = Math.min(Math.max(cropBoxData.width, cropBoxData.minWidth), cropBoxData.maxWidth);
+    cropBoxData.height = Math.min(Math.max(cropBoxData.height, cropBoxData.minHeight), cropBoxData.maxHeight);
+
+    // The width/height of auto crop area must large than "minWidth/Height"
+    cropBoxData.width = Math.max(cropBoxData.minWidth, cropBoxData.width * autoCropArea);
+    cropBoxData.height = Math.max(cropBoxData.minHeight, cropBoxData.height * autoCropArea);
+    cropBoxData.left = canvasData.left + (canvasData.width - cropBoxData.width) / 2;
+    cropBoxData.top = canvasData.top + (canvasData.height - cropBoxData.height) / 2;
+    cropBoxData.oldLeft = cropBoxData.left;
+    cropBoxData.oldTop = cropBoxData.top;
+
+    this.initialCropBoxData = extend({}, cropBoxData);
+  },
+  limitCropBox: function limitCropBox(sizeLimited, positionLimited) {
+    var options = this.options,
+        containerData = this.containerData,
+        canvasData = this.canvasData,
+        cropBoxData = this.cropBoxData,
+        limited = this.limited;
+    var aspectRatio = options.aspectRatio;
+
+
+    if (sizeLimited) {
+      var minCropBoxWidth = Number(options.minCropBoxWidth) || 0;
+      var minCropBoxHeight = Number(options.minCropBoxHeight) || 0;
+      var maxCropBoxWidth = Math.min(containerData.width, limited ? canvasData.width : containerData.width);
+      var maxCropBoxHeight = Math.min(containerData.height, limited ? canvasData.height : containerData.height);
+
+      // The min/maxCropBoxWidth/Height must be less than container's width/height
+      minCropBoxWidth = Math.min(minCropBoxWidth, containerData.width);
+      minCropBoxHeight = Math.min(minCropBoxHeight, containerData.height);
+
+      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
+      cropBoxData.minWidth = Math.min(minCropBoxWidth, maxCropBoxWidth);
+      cropBoxData.minHeight = Math.min(minCropBoxHeight, maxCropBoxHeight);
+      cropBoxData.maxWidth = maxCropBoxWidth;
+      cropBoxData.maxHeight = maxCropBoxHeight;
+    }
+
+    if (positionLimited) {
+      if (limited) {
+        cropBoxData.minLeft = Math.max(0, canvasData.left);
+        cropBoxData.minTop = Math.max(0, canvasData.top);
+        cropBoxData.maxLeft = Math.min(containerData.width, canvasData.left + canvasData.width) - cropBoxData.width;
+        cropBoxData.maxTop = Math.min(containerData.height, canvasData.top + canvasData.height) - cropBoxData.height;
+      } else {
+        cropBoxData.minLeft = 0;
+        cropBoxData.minTop = 0;
+        cropBoxData.maxLeft = containerData.width - cropBoxData.width;
+        cropBoxData.maxTop = containerData.height - cropBoxData.height;
+      }
+    }
+  },
+  renderCropBox: function renderCropBox() {
+    var options = this.options,
+        containerData = this.containerData,
+        cropBoxData = this.cropBoxData;
+
+
+    if (cropBoxData.width > cropBoxData.maxWidth || cropBoxData.width < cropBoxData.minWidth) {
+      cropBoxData.left = cropBoxData.oldLeft;
+    }
+
+    if (cropBoxData.height > cropBoxData.maxHeight || cropBoxData.height < cropBoxData.minHeight) {
+      cropBoxData.top = cropBoxData.oldTop;
+    }
+
+    cropBoxData.width = Math.min(Math.max(cropBoxData.width, cropBoxData.minWidth), cropBoxData.maxWidth);
+    cropBoxData.height = Math.min(Math.max(cropBoxData.height, cropBoxData.minHeight), cropBoxData.maxHeight);
+
+    this.limitCropBox(false, true);
+
+    cropBoxData.left = Math.min(Math.max(cropBoxData.left, cropBoxData.minLeft), cropBoxData.maxLeft);
+    cropBoxData.top = Math.min(Math.max(cropBoxData.top, cropBoxData.minTop), cropBoxData.maxTop);
+    cropBoxData.oldLeft = cropBoxData.left;
+    cropBoxData.oldTop = cropBoxData.top;
+
+    if (options.movable && options.cropBoxMovable) {
+      // Turn to move the canvas when the crop box is equal to the container
+      setData(this.face, DATA_ACTION, cropBoxData.width >= containerData.width && cropBoxData.height >= containerData.height ? ACTION_MOVE : ACTION_ALL);
+    }
+
+    setStyle(this.cropBox, extend({
+      width: cropBoxData.width,
+      height: cropBoxData.height
+    }, getTransforms({
+      translateX: cropBoxData.left,
+      translateY: cropBoxData.top
+    })));
+
+    if (this.cropped && this.limited) {
+      this.limitCanvas(true, true);
+    }
+
+    if (!this.disabled) {
+      this.output();
+    }
+  },
+  output: function output() {
+    this.preview();
+
+    if (this.complete) {
+      dispatchEvent(this.element, EVENT_CROP, this.getData());
+    }
+  }
+};
+
+var preview = {
+  initPreview: function initPreview() {
+    var crossOrigin = this.crossOrigin;
+    var preview = this.options.preview;
+
+    var url = crossOrigin ? this.crossOriginUrl : this.url;
+    var image = document.createElement('img');
+
+    if (crossOrigin) {
+      image.crossOrigin = crossOrigin;
+    }
+
+    image.src = url;
+    this.viewBox.appendChild(image);
+    this.image2 = image;
+
+    if (!preview) {
+      return;
+    }
+
+    var previews = preview.querySelector ? [preview] : document.querySelectorAll(preview);
+
+    this.previews = previews;
+
+    each(previews, function (element) {
+      var img = document.createElement('img');
+
+      // Save the original size for recover
+      setData(element, DATA_PREVIEW, {
+        width: element.offsetWidth,
+        height: element.offsetHeight,
+        html: element.innerHTML
+      });
+
+      if (crossOrigin) {
+        img.crossOrigin = crossOrigin;
+      }
+
+      img.src = url;
+
+      /**
+       * Override img element styles
+       * Add `display:block` to avoid margin top issue
+       * Add `height:auto` to override `height` attribute on IE8
+       * (Occur only when margin-top <= -height)
+       */
+      img.style.cssText = '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;"';
+
+      empty(element);
+      element.appendChild(img);
+    });
+  },
+  resetPreview: function resetPreview() {
+    each(this.previews, function (element) {
+      var data = getData(element, DATA_PREVIEW);
+
+      setStyle(element, {
+        width: data.width,
+        height: data.height
+      });
+
+      element.innerHTML = data.html;
+      removeData(element, DATA_PREVIEW);
+    });
+  },
+  preview: function preview() {
+    var imageData = this.imageData,
+        canvasData = this.canvasData,
+        cropBoxData = this.cropBoxData;
+    var cropBoxWidth = cropBoxData.width,
+        cropBoxHeight = cropBoxData.height;
+    var width = imageData.width,
+        height = imageData.height;
+
+    var left = cropBoxData.left - canvasData.left - imageData.left;
+    var top = cropBoxData.top - canvasData.top - imageData.top;
+
+    if (!this.cropped || this.disabled) {
+      return;
+    }
+
+    setStyle(this.image2, extend({
+      width: width,
+      height: height
+    }, getTransforms(extend({
+      translateX: -left,
+      translateY: -top
+    }, imageData))));
+
+    each(this.previews, function (element) {
+      var data = getData(element, 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;
+      }
+
+      setStyle(element, {
+        width: newWidth,
+        height: newHeight
+      });
+
+      setStyle(element.getElementsByTagName('img')[0], extend({
+        width: width * ratio,
+        height: height * ratio
+      }, getTransforms(extend({
+        translateX: -left * ratio,
+        translateY: -top * ratio
+      }, imageData))));
+    });
+  }
+};
+
+var events = {
+  bind: function bind() {
+    var element = this.element,
+        options = this.options,
+        cropper = this.cropper;
+
+
+    if (isFunction(options.cropstart)) {
+      addListener(element, EVENT_CROP_START, options.cropstart);
+    }
+
+    if (isFunction(options.cropmove)) {
+      addListener(element, EVENT_CROP_MOVE, options.cropmove);
+    }
+
+    if (isFunction(options.cropend)) {
+      addListener(element, EVENT_CROP_END, options.cropend);
+    }
+
+    if (isFunction(options.crop)) {
+      addListener(element, EVENT_CROP, options.crop);
+    }
+
+    if (isFunction(options.zoom)) {
+      addListener(element, EVENT_ZOOM, options.zoom);
+    }
+
+    addListener(cropper, EVENT_POINTER_DOWN, this.onCropStart = proxy(this.cropStart, this));
+
+    if (options.zoomable && options.zoomOnWheel) {
+      addListener(cropper, EVENT_WHEEL, this.onWheel = proxy(this.wheel, this));
+    }
+
+    if (options.toggleDragModeOnDblclick) {
+      addListener(cropper, EVENT_DBLCLICK, this.onDblclick = proxy(this.dblclick, this));
+    }
+
+    addListener(element.ownerDocument, EVENT_POINTER_MOVE, this.onCropMove = proxy(this.cropMove, this));
+    addListener(element.ownerDocument, EVENT_POINTER_UP, this.onCropEnd = proxy(this.cropEnd, this));
+
+    if (options.responsive) {
+      addListener(window, EVENT_RESIZE, this.onResize = proxy(this.resize, this));
+    }
+  },
+  unbind: function unbind() {
+    var element = this.element,
+        options = this.options,
+        cropper = this.cropper;
+
+
+    if (isFunction(options.cropstart)) {
+      removeListener(element, EVENT_CROP_START, options.cropstart);
+    }
+
+    if (isFunction(options.cropmove)) {
+      removeListener(element, EVENT_CROP_MOVE, options.cropmove);
+    }
+
+    if (isFunction(options.cropend)) {
+      removeListener(element, EVENT_CROP_END, options.cropend);
+    }
+
+    if (isFunction(options.crop)) {
+      removeListener(element, EVENT_CROP, options.crop);
+    }
+
+    if (isFunction(options.zoom)) {
+      removeListener(element, EVENT_ZOOM, options.zoom);
+    }
+
+    removeListener(cropper, EVENT_POINTER_DOWN, this.onCropStart);
+
+    if (options.zoomable && options.zoomOnWheel) {
+      removeListener(cropper, EVENT_WHEEL, this.onWheel);
+    }
+
+    if (options.toggleDragModeOnDblclick) {
+      removeListener(cropper, EVENT_DBLCLICK, this.onDblclick);
+    }
+
+    removeListener(element.ownerDocument, EVENT_POINTER_MOVE, this.onCropMove);
+    removeListener(element.ownerDocument, EVENT_POINTER_UP, this.onCropEnd);
+
+    if (options.responsive) {
+      removeListener(window, EVENT_RESIZE, this.onResize);
+    }
+  }
+};
+
+var handlers = {
+  resize: function resize() {
+    var options = this.options,
+        container = this.container,
+        containerData = this.containerData;
+
+    var minContainerWidth = Number(options.minContainerWidth) || 200;
+    var minContainerHeight = Number(options.minContainerHeight) || 100;
+
+    if (this.disabled || containerData.width <= minContainerWidth || containerData.height <= minContainerHeight) {
+      return;
+    }
+
+    var ratio = container.offsetWidth / containerData.width;
+
+    // Resize when width changed or height changed
+    if (ratio !== 1 || container.offsetHeight !== containerData.height) {
+      var canvasData = void 0;
+      var cropBoxData = void 0;
+
+      if (options.restore) {
+        canvasData = this.getCanvasData();
+        cropBoxData = this.getCropBoxData();
+      }
+
+      this.render();
+
+      if (options.restore) {
+        this.setCanvasData(each(canvasData, function (n, i) {
+          canvasData[i] = n * ratio;
+        }));
+        this.setCropBoxData(each(cropBoxData, function (n, i) {
+          cropBoxData[i] = n * ratio;
+        }));
+      }
+    }
+  },
+  dblclick: function dblclick() {
+    if (this.disabled || this.options.dragMode === DRAG_MODE_NONE) {
+      return;
+    }
+
+    this.setDragMode(hasClass(this.dragBox, CLASS_CROP) ? DRAG_MODE_MOVE : DRAG_MODE_CROP);
+  },
+  wheel: function wheel(e) {
+    var _this = this;
+
+    var ratio = Number(this.options.wheelZoomRatio) || 0.1;
+    var delta = 1;
+
+    if (this.disabled) {
+      return;
+    }
+
+    e.preventDefault();
+
+    // Limit wheel speed to prevent zoom too fast (#21)
+    if (this.wheeling) {
+      return;
+    }
+
+    this.wheeling = true;
+
+    setTimeout(function () {
+      _this.wheeling = false;
+    }, 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, e);
+  },
+  cropStart: function cropStart(e) {
+    if (this.disabled) {
+      return;
+    }
+
+    var options = this.options,
+        pointers = this.pointers;
+
+    var action = void 0;
+
+    if (e.changedTouches) {
+      // Handle touch event
+      each(e.changedTouches, function (touch) {
+        pointers[touch.identifier] = getPointer(touch);
+      });
+    } else {
+      // Handle mouse event and pointer event
+      pointers[e.pointerId || 0] = getPointer(e);
+    }
+
+    if (Object.keys(pointers).length > 1 && options.zoomable && options.zoomOnTouch) {
+      action = ACTION_ZOOM;
+    } else {
+      action = getData(e.target, DATA_ACTION);
+    }
+
+    if (!REGEXP_ACTIONS.test(action)) {
+      return;
+    }
+
+    if (dispatchEvent(this.element, EVENT_CROP_START, {
+      originalEvent: e,
+      action: action
+    }) === false) {
+      return;
+    }
+
+    e.preventDefault();
+
+    this.action = action;
+    this.cropping = false;
+
+    if (action === ACTION_CROP) {
+      this.cropping = true;
+      addClass(this.dragBox, CLASS_MODAL);
+    }
+  },
+  cropMove: function cropMove(e) {
+    var action = this.action;
+
+
+    if (this.disabled || !action) {
+      return;
+    }
+
+    var pointers = this.pointers;
+
+
+    e.preventDefault();
+
+    if (dispatchEvent(this.element, EVENT_CROP_MOVE, {
+      originalEvent: e,
+      action: action
+    }) === false) {
+      return;
+    }
+
+    if (e.changedTouches) {
+      each(e.changedTouches, function (touch) {
+        extend(pointers[touch.identifier], getPointer(touch, true));
+      });
+    } else {
+      extend(pointers[e.pointerId || 0], getPointer(e, true));
+    }
+
+    this.change(e);
+  },
+  cropEnd: function cropEnd(e) {
+    if (this.disabled) {
+      return;
+    }
+
+    var action = this.action,
+        pointers = this.pointers;
+
+
+    if (e.changedTouches) {
+      each(e.changedTouches, function (touch) {
+        delete pointers[touch.identifier];
+      });
+    } else {
+      delete pointers[e.pointerId || 0];
+    }
+
+    if (!action) {
+      return;
+    }
+
+    e.preventDefault();
+
+    if (!Object.keys(pointers).length) {
+      this.action = '';
+    }
+
+    if (this.cropping) {
+      this.cropping = false;
+      toggleClass(this.dragBox, CLASS_MODAL, this.cropped && this.options.modal);
+    }
+
+    dispatchEvent(this.element, EVENT_CROP_END, {
+      originalEvent: e,
+      action: action
+    });
+  }
+};
+
+var change = {
+  change: function change(e) {
+    var options = this.options,
+        canvasData = this.canvasData,
+        containerData = this.containerData,
+        cropBoxData = this.cropBoxData,
+        pointers = this.pointers;
+    var action = this.action;
+    var aspectRatio = options.aspectRatio;
+    var left = cropBoxData.left,
+        top = cropBoxData.top,
+        width = cropBoxData.width,
+        height = cropBoxData.height;
+
+    var right = left + width;
+    var bottom = top + height;
+    var minLeft = 0;
+    var minTop = 0;
+    var maxWidth = containerData.width;
+    var maxHeight = containerData.height;
+    var renderable = true;
+    var offset = void 0;
+
+    // Locking aspect ratio in "free mode" by holding shift key
+    if (!aspectRatio && e.shiftKey) {
+      aspectRatio = width && height ? width / height : 1;
+    }
+
+    if (this.limited) {
+      minLeft = cropBoxData.minLeft;
+      minTop = cropBoxData.minTop;
+
+      maxWidth = minLeft + Math.min(containerData.width, canvasData.width, canvasData.left + canvasData.width);
+      maxHeight = minTop + Math.min(containerData.height, canvasData.height, canvasData.top + canvasData.height);
+    }
+
+    var pointer = pointers[Object.keys(pointers)[0]];
+    var range = {
+      x: pointer.endX - pointer.startX,
+      y: pointer.endY - pointer.startY
+    };
+    var check = function check(side) {
+      switch (side) {
+        case ACTION_EAST:
+          if (right + range.x > maxWidth) {
+            range.x = maxWidth - right;
+          }
+
+          break;
+
+        case ACTION_WEST:
+          if (left + range.x < minLeft) {
+            range.x = minLeft - left;
+          }
+
+          break;
+
+        case ACTION_NORTH:
+          if (top + range.y < minTop) {
+            range.y = minTop - top;
+          }
+
+          break;
+
+        case ACTION_SOUTH:
+          if (bottom + range.y > maxHeight) {
+            range.y = maxHeight - bottom;
+          }
+
+          break;
+
+        default:
+      }
+    };
+
+    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;
+        }
+
+        check(ACTION_EAST);
+        width += range.x;
+
+        if (aspectRatio) {
+          height = width / aspectRatio;
+          top -= range.x / aspectRatio / 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;
+        }
+
+        check(ACTION_NORTH);
+        height -= range.y;
+        top += range.y;
+
+        if (aspectRatio) {
+          width = height * aspectRatio;
+          left += range.y * aspectRatio / 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;
+        }
+
+        check(ACTION_WEST);
+        width -= range.x;
+        left += range.x;
+
+        if (aspectRatio) {
+          height = width / aspectRatio;
+          top += range.x / aspectRatio / 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;
+        }
+
+        check(ACTION_SOUTH);
+        height += range.y;
+
+        if (aspectRatio) {
+          width = height * aspectRatio;
+          left -= range.y * aspectRatio / 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;
+          }
+
+          check(ACTION_NORTH);
+          height -= range.y;
+          top += range.y;
+          width = height * aspectRatio;
+        } else {
+          check(ACTION_NORTH);
+          check(ACTION_EAST);
+
+          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;
+          }
+
+          check(ACTION_NORTH);
+          height -= range.y;
+          top += range.y;
+          width = height * aspectRatio;
+          left += range.y * aspectRatio;
+        } else {
+          check(ACTION_NORTH);
+          check(ACTION_WEST);
+
+          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;
+          }
+
+          check(ACTION_WEST);
+          width -= range.x;
+          left += range.x;
+          height = width / aspectRatio;
+        } else {
+          check(ACTION_SOUTH);
+          check(ACTION_WEST);
+
+          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;
+          }
+
+          check(ACTION_EAST);
+          width += range.x;
+          height = width / aspectRatio;
+        } else {
+          check(ACTION_SOUTH);
+          check(ACTION_EAST);
+
+          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(getMaxZoomRatio(pointers), e);
+        renderable = false;
+        break;
+
+      // Create crop box
+      case ACTION_CROP:
+        if (!range.x || !range.y) {
+          renderable = false;
+          break;
+        }
+
+        offset = getOffset(this.cropper);
+        left = pointer.startX - offset.left;
+        top = pointer.startY - offset.top;
+        width = cropBoxData.minWidth;
+        height = cropBoxData.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.cropped) {
+          removeClass(this.cropBox, CLASS_HIDDEN);
+          this.cropped = true;
+
+          if (this.limited) {
+            this.limitCropBox(true, true);
+          }
+        }
+
+        break;
+
+      default:
+    }
+
+    if (renderable) {
+      cropBoxData.width = width;
+      cropBoxData.height = height;
+      cropBoxData.left = left;
+      cropBoxData.top = top;
+      this.action = action;
+      this.renderCropBox();
+    }
+
+    // Override
+    each(pointers, function (p) {
+      p.startX = p.endX;
+      p.startY = p.endY;
+    });
+  }
+};
+
+var methods = {
+  // Show the crop box manually
+  crop: function crop() {
+    if (this.ready && !this.disabled) {
+      if (!this.cropped) {
+        this.cropped = true;
+        this.limitCropBox(true, true);
+
+        if (this.options.modal) {
+          addClass(this.dragBox, CLASS_MODAL);
+        }
+
+        removeClass(this.cropBox, CLASS_HIDDEN);
+      }
+
+      this.setCropBoxData(this.initialCropBoxData);
+    }
+
+    return this;
+  },
+
+
+  // Reset the image and crop box to their initial states
+  reset: function reset() {
+    if (this.ready && !this.disabled) {
+      this.imageData = extend({}, this.initialImageData);
+      this.canvasData = extend({}, this.initialCanvasData);
+      this.cropBoxData = extend({}, this.initialCropBoxData);
+      this.renderCanvas();
+
+      if (this.cropped) {
+        this.renderCropBox();
+      }
+    }
+
+    return this;
+  },
+
+
+  // Clear the crop box
+  clear: function clear() {
+    if (this.cropped && !this.disabled) {
+      extend(this.cropBoxData, {
+        left: 0,
+        top: 0,
+        width: 0,
+        height: 0
+      });
+
+      this.cropped = false;
+      this.renderCropBox();
+      this.limitCanvas(true, true);
+
+      // Render canvas after crop box rendered
+      this.renderCanvas();
+      removeClass(this.dragBox, CLASS_MODAL);
+      addClass(this.cropBox, CLASS_HIDDEN);
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Replace the image's src and rebuild the cropper
+   * @param {string} url - The new URL.
+   * @param {boolean} [onlyColorChanged] - Indicate if the new image only changed color.
+   * @returns {Object} this
+   */
+  replace: function replace(url) {
+    var onlyColorChanged = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
+
+    if (!this.disabled && url) {
+      if (this.isImg) {
+        this.element.src = url;
+      }
+
+      if (onlyColorChanged) {
+        this.url = url;
+        this.image.src = url;
+
+        if (this.ready) {
+          this.image2.src = url;
+
+          each(this.previews, function (element) {
+            element.getElementsByTagName('img')[0].src = url;
+          });
+        }
+      } else {
+        if (this.isImg) {
+          this.replaced = true;
+        }
+
+        // Clear previous data
+        this.options.data = null;
+        this.load(url);
+      }
+    }
+
+    return this;
+  },
+
+
+  // Enable (unfreeze) the cropper
+  enable: function enable() {
+    if (this.ready) {
+      this.disabled = false;
+      removeClass(this.cropper, CLASS_DISABLED);
+    }
+
+    return this;
+  },
+
+
+  // Disable (freeze) the cropper
+  disable: function disable() {
+    if (this.ready) {
+      this.disabled = true;
+      addClass(this.cropper, CLASS_DISABLED);
+    }
+
+    return this;
+  },
+
+
+  // Destroy the cropper and remove the instance from the image
+  destroy: function destroy() {
+    var element = this.element,
+        image = this.image;
+
+
+    if (this.loaded) {
+      if (this.isImg && this.replaced) {
+        element.src = this.originalUrl;
+      }
+
+      this.unbuild();
+      removeClass(element, CLASS_HIDDEN);
+    } else if (this.isImg) {
+      removeListener(element, EVENT_LOAD, this.onStart);
+    } else if (image) {
+      image.parentNode.removeChild(image);
+    }
+
+    removeData(element, NAMESPACE);
+
+    return this;
+  },
+
+
+  /**
+   * Move the canvas with relative offsets
+   * @param {number} offsetX - The relative offset distance on the x-axis.
+   * @param {number} offsetY - The relative offset distance on the y-axis.
+   * @returns {Object} this
+   */
+  move: function move(offsetX, offsetY) {
+    var _canvasData = this.canvasData,
+        left = _canvasData.left,
+        top = _canvasData.top;
+
+
+    return this.moveTo(isUndefined(offsetX) ? offsetX : left + Number(offsetX), isUndefined(offsetY) ? offsetY : top + Number(offsetY));
+  },
+
+
+  /**
+   * Move the canvas to an absolute point
+   * @param {number} x - The x-axis coordinate.
+   * @param {number} [y=x] - The y-axis coordinate.
+   * @returns {Object} this
+   */
+  moveTo: function moveTo(x) {
+    var y = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : x;
+    var canvasData = this.canvasData;
+
+    var changed = false;
+
+    x = Number(x);
+    y = Number(y);
+
+    if (this.ready && !this.disabled && this.options.movable) {
+      if (isNumber(x)) {
+        canvasData.left = x;
+        changed = true;
+      }
+
+      if (isNumber(y)) {
+        canvasData.top = y;
+        changed = true;
+      }
+
+      if (changed) {
+        this.renderCanvas(true);
+      }
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Zoom the canvas with a relative ratio
+   * @param {number} ratio - The target ratio.
+   * @param {Event} _originalEvent - The original event if any.
+   * @returns {Object} this
+   */
+  zoom: function zoom(ratio, _originalEvent) {
+    var canvasData = this.canvasData;
+
+
+    ratio = Number(ratio);
+
+    if (ratio < 0) {
+      ratio = 1 / (1 - ratio);
+    } else {
+      ratio = 1 + ratio;
+    }
+
+    return this.zoomTo(canvasData.width * ratio / canvasData.naturalWidth, null, _originalEvent);
+  },
+
+
+  /**
+   * Zoom the canvas to an absolute ratio
+   * @param {number} ratio - The target ratio.
+   * @param {Object} pivot - The zoom pivot point coordinate.
+   * @param {Event} _originalEvent - The original event if any.
+   * @returns {Object} this
+   */
+  zoomTo: function zoomTo(ratio, pivot, _originalEvent) {
+    var options = this.options,
+        canvasData = this.canvasData;
+    var width = canvasData.width,
+        height = canvasData.height,
+        naturalWidth = canvasData.naturalWidth,
+        naturalHeight = canvasData.naturalHeight;
+
+
+    ratio = Number(ratio);
+
+    if (ratio >= 0 && this.ready && !this.disabled && options.zoomable) {
+      var newWidth = naturalWidth * ratio;
+      var newHeight = naturalHeight * ratio;
+
+      if (dispatchEvent(this.element, EVENT_ZOOM, {
+        originalEvent: _originalEvent,
+        oldRatio: width / naturalWidth,
+        ratio: newWidth / naturalWidth
+      }) === false) {
+        return this;
+      }
+
+      if (_originalEvent) {
+        var pointers = this.pointers;
+
+        var offset = getOffset(this.cropper);
+        var center = pointers && Object.keys(pointers).length ? getPointersCenter(pointers) : {
+          pageX: _originalEvent.pageX,
+          pageY: _originalEvent.pageY
+        };
+
+        // Zoom from the triggering point of the event
+        canvasData.left -= (newWidth - width) * ((center.pageX - offset.left - canvasData.left) / width);
+        canvasData.top -= (newHeight - height) * ((center.pageY - offset.top - canvasData.top) / height);
+      } else if (isPlainObject(pivot) && isNumber(pivot.x) && isNumber(pivot.y)) {
+        canvasData.left -= (newWidth - width) * ((pivot.x - canvasData.left) / width);
+        canvasData.top -= (newHeight - height) * ((pivot.y - canvasData.top) / height);
+      } else {
+        // Zoom from the center of the canvas
+        canvasData.left -= (newWidth - width) / 2;
+        canvasData.top -= (newHeight - height) / 2;
+      }
+
+      canvasData.width = newWidth;
+      canvasData.height = newHeight;
+      this.renderCanvas(true);
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Rotate the canvas with a relative degree
+   * @param {number} degree - The rotate degree.
+   * @returns {Object} this
+   */
+  rotate: function rotate(degree) {
+    return this.rotateTo((this.imageData.rotate || 0) + Number(degree));
+  },
+
+
+  /**
+   * Rotate the canvas to an absolute degree
+   * @param {number} degree - The rotate degree.
+   * @returns {Object} this
+   */
+  rotateTo: function rotateTo(degree) {
+    degree = Number(degree);
+
+    if (isNumber(degree) && this.ready && !this.disabled && this.options.rotatable) {
+      this.imageData.rotate = degree % 360;
+      this.renderCanvas(true, true);
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Scale the image on the x-axis.
+   * @param {number} scaleX - The scale ratio on the x-axis.
+   * @returns {Object} this
+   */
+  scaleX: function scaleX(_scaleX) {
+    var scaleY = this.imageData.scaleY;
+
+
+    return this.scale(_scaleX, isNumber(scaleY) ? scaleY : 1);
+  },
+
+
+  /**
+   * Scale the image on the y-axis.
+   * @param {number} scaleY - The scale ratio on the y-axis.
+   * @returns {Object} this
+   */
+  scaleY: function scaleY(_scaleY) {
+    var scaleX = this.imageData.scaleX;
+
+
+    return this.scale(isNumber(scaleX) ? scaleX : 1, _scaleY);
+  },
+
+
+  /**
+   * Scale the image
+   * @param {number} scaleX - The scale ratio on the x-axis.
+   * @param {number} [scaleY=scaleX] - The scale ratio on the y-axis.
+   * @returns {Object} this
+   */
+  scale: function scale(scaleX) {
+    var scaleY = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : scaleX;
+    var imageData = this.imageData;
+
+    var transformed = false;
+
+    scaleX = Number(scaleX);
+    scaleY = Number(scaleY);
+
+    if (this.ready && !this.disabled && this.options.scalable) {
+      if (isNumber(scaleX)) {
+        imageData.scaleX = scaleX;
+        transformed = true;
+      }
+
+      if (isNumber(scaleY)) {
+        imageData.scaleY = scaleY;
+        transformed = true;
+      }
+
+      if (transformed) {
+        this.renderCanvas(true, true);
+      }
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Get the cropped area position and size data (base on the original image)
+   * @param {boolean} [rounded=false] - Indicate if round the data values or not.
+   * @returns {Object} The result cropped data.
+   */
+  getData: function getData$$1() {
+    var rounded = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
+    var options = this.options,
+        imageData = this.imageData,
+        canvasData = this.canvasData,
+        cropBoxData = this.cropBoxData;
+
+    var data = void 0;
+
+    if (this.ready && this.cropped) {
+      data = {
+        x: cropBoxData.left - canvasData.left,
+        y: cropBoxData.top - canvasData.top,
+        width: cropBoxData.width,
+        height: cropBoxData.height
+      };
+
+      var ratio = imageData.width / imageData.naturalWidth;
+
+      each(data, function (n, i) {
+        n /= ratio;
+        data[i] = rounded ? Math.round(n) : n;
+      });
+    } else {
+      data = {
+        x: 0,
+        y: 0,
+        width: 0,
+        height: 0
+      };
+    }
+
+    if (options.rotatable) {
+      data.rotate = imageData.rotate || 0;
+    }
+
+    if (options.scalable) {
+      data.scaleX = imageData.scaleX || 1;
+      data.scaleY = imageData.scaleY || 1;
+    }
+
+    return data;
+  },
+
+
+  /**
+   * Set the cropped area position and size with new data
+   * @param {Object} data - The new data.
+   * @returns {Object} this
+   */
+  setData: function setData$$1(data) {
+    var options = this.options,
+        imageData = this.imageData,
+        canvasData = this.canvasData;
+
+    var cropBoxData = {};
+
+    if (isFunction(data)) {
+      data = data.call(this.element);
+    }
+
+    if (this.ready && !this.disabled && isPlainObject(data)) {
+      var transformed = false;
+
+      if (options.rotatable) {
+        if (isNumber(data.rotate) && data.rotate !== imageData.rotate) {
+          imageData.rotate = data.rotate;
+          transformed = true;
+        }
+      }
+
+      if (options.scalable) {
+        if (isNumber(data.scaleX) && data.scaleX !== imageData.scaleX) {
+          imageData.scaleX = data.scaleX;
+          transformed = true;
+        }
+
+        if (isNumber(data.scaleY) && data.scaleY !== imageData.scaleY) {
+          imageData.scaleY = data.scaleY;
+          transformed = true;
+        }
+      }
+
+      if (transformed) {
+        this.renderCanvas(true, true);
+      }
+
+      var ratio = imageData.width / imageData.naturalWidth;
+
+      if (isNumber(data.x)) {
+        cropBoxData.left = data.x * ratio + canvasData.left;
+      }
+
+      if (isNumber(data.y)) {
+        cropBoxData.top = data.y * ratio + canvasData.top;
+      }
+
+      if (isNumber(data.width)) {
+        cropBoxData.width = data.width * ratio;
+      }
+
+      if (isNumber(data.height)) {
+        cropBoxData.height = data.height * ratio;
+      }
+
+      this.setCropBoxData(cropBoxData);
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Get the container size data.
+   * @returns {Object} The result container data.
+   */
+  getContainerData: function getContainerData() {
+    return this.ready ? extend({}, this.containerData) : {};
+  },
+
+
+  /**
+   * Get the image position and size data.
+   * @returns {Object} The result image data.
+   */
+  getImageData: function getImageData() {
+    return this.loaded ? extend({}, this.imageData) : {};
+  },
+
+
+  /**
+   * Get the canvas position and size data.
+   * @returns {Object} The result canvas data.
+   */
+  getCanvasData: function getCanvasData() {
+    var canvasData = this.canvasData;
+
+    var data = {};
+
+    if (this.ready) {
+      each(['left', 'top', 'width', 'height', 'naturalWidth', 'naturalHeight'], function (n) {
+        data[n] = canvasData[n];
+      });
+    }
+
+    return data;
+  },
+
+
+  /**
+   * Set the canvas position and size with new data.
+   * @param {Object} data - The new canvas data.
+   * @returns {Object} this
+   */
+  setCanvasData: function setCanvasData(data) {
+    var canvasData = this.canvasData;
+    var aspectRatio = canvasData.aspectRatio;
+
+
+    if (isFunction(data)) {
+      data = data.call(this.element);
+    }
+
+    if (this.ready && !this.disabled && isPlainObject(data)) {
+      if (isNumber(data.left)) {
+        canvasData.left = data.left;
+      }
+
+      if (isNumber(data.top)) {
+        canvasData.top = data.top;
+      }
+
+      if (isNumber(data.width)) {
+        canvasData.width = data.width;
+        canvasData.height = data.width / aspectRatio;
+      } else if (isNumber(data.height)) {
+        canvasData.height = data.height;
+        canvasData.width = data.height * aspectRatio;
+      }
+
+      this.renderCanvas(true);
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Get the crop box position and size data.
+   * @returns {Object} The result crop box data.
+   */
+  getCropBoxData: function getCropBoxData() {
+    var cropBoxData = this.cropBoxData;
+
+    var data = void 0;
+
+    if (this.ready && this.cropped) {
+      data = {
+        left: cropBoxData.left,
+        top: cropBoxData.top,
+        width: cropBoxData.width,
+        height: cropBoxData.height
+      };
+    }
+
+    return data || {};
+  },
+
+
+  /**
+   * Set the crop box position and size with new data.
+   * @param {Object} data - The new crop box data.
+   * @returns {Object} this
+   */
+  setCropBoxData: function setCropBoxData(data) {
+    var cropBoxData = this.cropBoxData;
+    var aspectRatio = this.options.aspectRatio;
+
+    var widthChanged = void 0;
+    var heightChanged = void 0;
+
+    if (isFunction(data)) {
+      data = data.call(this.element);
+    }
+
+    if (this.ready && this.cropped && !this.disabled && isPlainObject(data)) {
+      if (isNumber(data.left)) {
+        cropBoxData.left = data.left;
+      }
+
+      if (isNumber(data.top)) {
+        cropBoxData.top = data.top;
+      }
+
+      if (isNumber(data.width) && data.width !== cropBoxData.width) {
+        widthChanged = true;
+        cropBoxData.width = data.width;
+      }
+
+      if (isNumber(data.height) && data.height !== cropBoxData.height) {
+        heightChanged = true;
+        cropBoxData.height = data.height;
+      }
+
+      if (aspectRatio) {
+        if (widthChanged) {
+          cropBoxData.height = cropBoxData.width / aspectRatio;
+        } else if (heightChanged) {
+          cropBoxData.width = cropBoxData.height * aspectRatio;
+        }
+      }
+
+      this.renderCropBox();
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Get a canvas drawn the cropped image.
+   * @param {Object} [options={}] - The config options.
+   * @returns {HTMLCanvasElement} - The result canvas.
+   */
+  getCroppedCanvas: function getCroppedCanvas() {
+    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+
+    if (!this.ready || !window.HTMLCanvasElement) {
+      return null;
+    }
+
+    var canvasData = this.canvasData;
+
+    var source = getSourceCanvas(this.image, this.imageData, canvasData, options);
+
+    // Returns the source canvas if it is not cropped.
+    if (!this.cropped) {
+      return source;
+    }
+
+    var _getData = this.getData(),
+        x = _getData.x,
+        y = _getData.y,
+        initialWidth = _getData.width,
+        initialHeight = _getData.height;
+
+    var aspectRatio = initialWidth / initialHeight;
+    var maxSizes = getContainSizes({
+      aspectRatio: aspectRatio,
+      width: options.maxWidth || Infinity,
+      height: options.maxHeight || Infinity
+    });
+    var minSizes = getContainSizes({
+      aspectRatio: aspectRatio,
+      width: options.minWidth || 0,
+      height: options.minHeight || 0
+    });
+
+    var _getContainSizes = getContainSizes({
+      aspectRatio: aspectRatio,
+      width: options.width || initialWidth,
+      height: options.height || initialHeight
+    }),
+        width = _getContainSizes.width,
+        height = _getContainSizes.height;
+
+    width = Math.min(maxSizes.width, Math.max(minSizes.width, width));
+    height = Math.min(maxSizes.height, Math.max(minSizes.height, height));
+
+    var canvas = document.createElement('canvas');
+    var context = canvas.getContext('2d');
+
+    canvas.width = normalizeDecimalNumber(width);
+    canvas.height = normalizeDecimalNumber(height);
+
+    context.fillStyle = options.fillColor || 'transparent';
+    context.fillRect(0, 0, width, height);
+
+    var _options$imageSmoothi = options.imageSmoothingEnabled,
+        imageSmoothingEnabled = _options$imageSmoothi === undefined ? true : _options$imageSmoothi,
+        imageSmoothingQuality = options.imageSmoothingQuality;
+
+
+    context.imageSmoothingEnabled = imageSmoothingEnabled;
+
+    if (imageSmoothingQuality) {
+      context.imageSmoothingQuality = imageSmoothingQuality;
+    }
+
+    // https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D.drawImage
+    var sourceWidth = source.width;
+    var sourceHeight = source.height;
+
+    // Source canvas parameters
+    var srcX = x;
+    var srcY = y;
+    var srcWidth = void 0;
+    var srcHeight = void 0;
+
+    // Destination canvas parameters
+    var dstX = void 0;
+    var dstY = void 0;
+    var dstWidth = void 0;
+    var dstHeight = void 0;
+
+    if (srcX <= -initialWidth || srcX > sourceWidth) {
+      srcX = 0;
+      srcWidth = 0;
+      dstX = 0;
+      dstWidth = 0;
+    } else if (srcX <= 0) {
+      dstX = -srcX;
+      srcX = 0;
+      srcWidth = Math.min(sourceWidth, initialWidth + srcX);
+      dstWidth = srcWidth;
+    } else if (srcX <= sourceWidth) {
+      dstX = 0;
+      srcWidth = Math.min(initialWidth, sourceWidth - srcX);
+      dstWidth = srcWidth;
+    }
+
+    if (srcWidth <= 0 || srcY <= -initialHeight || srcY > sourceHeight) {
+      srcY = 0;
+      srcHeight = 0;
+      dstY = 0;
+      dstHeight = 0;
+    } else if (srcY <= 0) {
+      dstY = -srcY;
+      srcY = 0;
+      srcHeight = Math.min(sourceHeight, initialHeight + srcY);
+      dstHeight = srcHeight;
+    } else if (srcY <= sourceHeight) {
+      dstY = 0;
+      srcHeight = Math.min(initialHeight, sourceHeight - srcY);
+      dstHeight = srcHeight;
+    }
+
+    // All the numerical parameters should be integer for `drawImage`
+    // https://github.com/fengyuanchen/cropper/issues/476
+    var params = [srcX, srcY, srcWidth, srcHeight];
+
+    // Avoid "IndexSizeError"
+    if (dstWidth > 0 && dstHeight > 0) {
+      var scale = width / initialWidth;
+
+      params.push(dstX * scale, dstY * scale, dstWidth * scale, dstHeight * scale);
+    }
+
+    context.drawImage.apply(context, [source].concat(toConsumableArray(params.map(function (param) {
+      return Math.floor(normalizeDecimalNumber(param));
+    }))));
+
+    return canvas;
+  },
+
+
+  /**
+   * Change the aspect ratio of the crop box.
+   * @param {number} aspectRatio - The new aspect ratio.
+   * @returns {Object} this
+   */
+  setAspectRatio: function setAspectRatio(aspectRatio) {
+    var options = this.options;
+
+
+    if (!this.disabled && !isUndefined(aspectRatio)) {
+      // 0 -> NaN
+      options.aspectRatio = Math.max(0, aspectRatio) || NaN;
+
+      if (this.ready) {
+        this.initCropBox();
+
+        if (this.cropped) {
+          this.renderCropBox();
+        }
+      }
+    }
+
+    return this;
+  },
+
+
+  /**
+   * Change the drag mode.
+   * @param {string} mode - The new drag mode.
+   * @returns {Object} this
+   */
+  setDragMode: function setDragMode(mode) {
+    var options = this.options,
+        dragBox = this.dragBox,
+        face = this.face;
+
+
+    if (this.loaded && !this.disabled) {
+      var croppable = mode === DRAG_MODE_CROP;
+      var movable = options.movable && mode === DRAG_MODE_MOVE;
+
+      mode = croppable || movable ? mode : DRAG_MODE_NONE;
+
+      setData(dragBox, DATA_ACTION, mode);
+      toggleClass(dragBox, CLASS_CROP, croppable);
+      toggleClass(dragBox, CLASS_MOVE, movable);
+
+      if (!options.cropBoxMovable) {
+        // Sync drag mode to crop box when it is not movable
+        setData(face, DATA_ACTION, mode);
+        toggleClass(face, CLASS_CROP, croppable);
+        toggleClass(face, CLASS_MOVE, movable);
+      }
+    }
+
+    return this;
+  }
+};
+
+var AnotherCropper = WINDOW.Cropper;
+
+var Cropper = function () {
+  /**
+   * Create a new Cropper.
+   * @param {Element} element - The target element for cropping.
+   * @param {Object} [options={}] - The configuration options.
+   */
+  function Cropper(element) {
+    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    classCallCheck(this, Cropper);
+
+    if (!element || !REGEXP_TAG_NAME.test(element.tagName)) {
+      throw new Error('The first argument is required and must be an <img> or <canvas> element.');
+    }
+
+    this.element = element;
+    this.options = extend({}, DEFAULTS, isPlainObject(options) && options);
+    this.complete = false;
+    this.cropped = false;
+    this.disabled = false;
+    this.isImg = false;
+    this.limited = false;
+    this.loaded = false;
+    this.ready = false;
+    this.replaced = false;
+    this.wheeling = false;
+    this.originalUrl = '';
+    this.canvasData = null;
+    this.cropBoxData = null;
+    this.previews = null;
+    this.pointers = {};
+    this.init();
+  }
+
+  createClass(Cropper, [{
+    key: 'init',
+    value: function init() {
+      var element = this.element;
+
+      var tagName = element.tagName.toLowerCase();
+      var url = void 0;
+
+      if (getData(element, NAMESPACE)) {
+        return;
+      }
+
+      setData(element, NAMESPACE, this);
+
+      if (tagName === 'img') {
+        this.isImg = true;
+
+        // e.g.: "img/picture.jpg"
+        url = element.getAttribute('src') || '';
+        this.originalUrl = url;
+
+        // Stop when it's a blank image
+        if (!url) {
+          return;
+        }
+
+        // e.g.: "http://example.com/img/picture.jpg"
+        url = element.src;
+      } else if (tagName === 'canvas' && window.HTMLCanvasElement) {
+        url = element.toDataURL();
+      }
+
+      this.load(url);
+    }
+  }, {
+    key: 'load',
+    value: function load(url) {
+      var _this = this;
+
+      if (!url) {
+        return;
+      }
+
+      this.url = url;
+      this.imageData = {};
+
+      var element = this.element,
+          options = this.options;
+
+
+      if (!options.checkOrientation || !window.ArrayBuffer) {
+        this.clone();
+        return;
+      }
+
+      // XMLHttpRequest disallows to open a Data URL in some browsers like IE11 and Safari
+      if (REGEXP_DATA_URL.test(url)) {
+        if (REGEXP_DATA_URL_JPEG.test(url)) {
+          this.read(dataURLToArrayBuffer(url));
+        } else {
+          this.clone();
+        }
+
+        return;
+      }
+
+      var xhr = new XMLHttpRequest();
+
+      xhr.onerror = function () {
+        _this.clone();
+      };
+
+      xhr.onload = function () {
+        _this.read(xhr.response);
+      };
+
+      if (options.checkCrossOrigin && isCrossOriginURL(url) && element.crossOrigin) {
+        url = addTimestamp(url);
+      }
+
+      xhr.open('get', url);
+      xhr.responseType = 'arraybuffer';
+      xhr.withCredentials = element.crossOrigin === 'use-credentials';
+      xhr.send();
+    }
+  }, {
+    key: 'read',
+    value: function read(arrayBuffer) {
+      var options = this.options,
+          imageData = this.imageData;
+
+      var orientation = getOrientation(arrayBuffer);
+      var rotate = 0;
+      var scaleX = 1;
+      var scaleY = 1;
+
+      if (orientation > 1) {
+        this.url = arrayBufferToDataURL(arrayBuffer, 'image/jpeg');
+
+        var _parseOrientation = parseOrientation(orientation);
+
+        rotate = _parseOrientation.rotate;
+        scaleX = _parseOrientation.scaleX;
+        scaleY = _parseOrientation.scaleY;
+      }
+
+      if (options.rotatable) {
+        imageData.rotate = rotate;
+      }
+
+      if (options.scalable) {
+        imageData.scaleX = scaleX;
+        imageData.scaleY = scaleY;
+      }
+
+      this.clone();
+    }
+  }, {
+    key: 'clone',
+    value: function clone() {
+      var element = this.element,
+          url = this.url;
+
+      var crossOrigin = void 0;
+      var crossOriginUrl = void 0;
+
+      if (this.options.checkCrossOrigin && isCrossOriginURL(url)) {
+        crossOrigin = element.crossOrigin;
+
+
+        if (crossOrigin) {
+          crossOriginUrl = url;
+        } else {
+          crossOrigin = 'anonymous';
+
+          // Bust cache when there is not a "crossOrigin" property
+          crossOriginUrl = addTimestamp(url);
+        }
+      }
+
+      this.crossOrigin = crossOrigin;
+      this.crossOriginUrl = crossOriginUrl;
+
+      var image = document.createElement('img');
+
+      if (crossOrigin) {
+        image.crossOrigin = crossOrigin;
+      }
+
+      image.src = crossOriginUrl || url;
+
+      var start = proxy(this.start, this);
+      var stop = proxy(this.stop, this);
+
+      this.image = image;
+      this.onStart = start;
+      this.onStop = stop;
+
+      if (this.isImg) {
+        if (element.complete) {
+          this.start();
+        } else {
+          addListener(element, EVENT_LOAD, start);
+        }
+      } else {
+        addListener(image, EVENT_LOAD, start);
+        addListener(image, EVENT_ERROR, stop);
+        addClass(image, CLASS_HIDE);
+        element.parentNode.insertBefore(image, element.nextSibling);
+      }
+    }
+  }, {
+    key: 'start',
+    value: function start(event) {
+      var _this2 = this;
+
+      var image = this.isImg ? this.element : this.image;
+
+      if (event) {
+        removeListener(image, EVENT_LOAD, this.onStart);
+        removeListener(image, EVENT_ERROR, this.onStop);
+      }
+
+      getImageNaturalSizes(image, function (naturalWidth, naturalHeight) {
+        extend(_this2.imageData, {
+          naturalWidth: naturalWidth,
+          naturalHeight: naturalHeight,
+          aspectRatio: naturalWidth / naturalHeight
+        });
+        _this2.loaded = true;
+        _this2.build();
+      });
+    }
+  }, {
+    key: 'stop',
+    value: function stop() {
+      var image = this.image;
+
+
+      removeListener(image, EVENT_LOAD, this.onStart);
+      removeListener(image, EVENT_ERROR, this.onStop);
+      image.parentNode.removeChild(image);
+      this.image = null;
+    }
+  }, {
+    key: 'build',
+    value: function build() {
+      var _this3 = this;
+
+      if (!this.loaded) {
+        return;
+      }
+
+      // Unbuild first when replace
+      if (this.ready) {
+        this.unbuild();
+      }
+
+      var element = this.element,
+          options = this.options,
+          image = this.image;
+
+      // Create cropper elements
+
+      var container = element.parentNode;
+      var template = document.createElement('div');
+
+      template.innerHTML = TEMPLATE;
+
+      var cropper = template.querySelector('.' + NAMESPACE + '-container');
+      var canvas = cropper.querySelector('.' + NAMESPACE + '-canvas');
+      var dragBox = cropper.querySelector('.' + NAMESPACE + '-drag-box');
+      var cropBox = cropper.querySelector('.' + NAMESPACE + '-crop-box');
+      var face = cropBox.querySelector('.' + NAMESPACE + '-face');
+
+      this.container = container;
+      this.cropper = cropper;
+      this.canvas = canvas;
+      this.dragBox = dragBox;
+      this.cropBox = cropBox;
+      this.viewBox = cropper.querySelector('.' + NAMESPACE + '-view-box');
+      this.face = face;
+
+      canvas.appendChild(image);
+
+      // Hide the original image
+      addClass(element, CLASS_HIDDEN);
+
+      // Inserts the cropper after to the current image
+      container.insertBefore(cropper, element.nextSibling);
+
+      // Show the image if is hidden
+      if (!this.isImg) {
+        removeClass(image, CLASS_HIDE);
+      }
+
+      this.initPreview();
+      this.bind();
+
+      options.aspectRatio = Math.max(0, options.aspectRatio) || NaN;
+      options.viewMode = Math.max(0, Math.min(3, Math.round(options.viewMode))) || 0;
+
+      this.cropped = options.autoCrop;
+
+      if (options.autoCrop) {
+        if (options.modal) {
+          addClass(dragBox, CLASS_MODAL);
+        }
+      } else {
+        addClass(cropBox, CLASS_HIDDEN);
+      }
+
+      if (!options.guides) {
+        addClass(cropBox.getElementsByClassName(NAMESPACE + '-dashed'), CLASS_HIDDEN);
+      }
+
+      if (!options.center) {
+        addClass(cropBox.getElementsByClassName(NAMESPACE + '-center'), CLASS_HIDDEN);
+      }
+
+      if (options.background) {
+        addClass(cropper, NAMESPACE + '-bg');
+      }
+
+      if (!options.highlight) {
+        addClass(face, CLASS_INVISIBLE);
+      }
+
+      if (options.cropBoxMovable) {
+        addClass(face, CLASS_MOVE);
+        setData(face, DATA_ACTION, ACTION_ALL);
+      }
+
+      if (!options.cropBoxResizable) {
+        addClass(cropBox.getElementsByClassName(NAMESPACE + '-line'), CLASS_HIDDEN);
+        addClass(cropBox.getElementsByClassName(NAMESPACE + '-point'), CLASS_HIDDEN);
+      }
+
+      this.setDragMode(options.dragMode);
+      this.render();
+      this.ready = true;
+      this.setData(options.data);
+
+      // Call the "ready" option asynchronously to keep "image.cropper" is defined
+      this.completing = setTimeout(function () {
+        if (isFunction(options.ready)) {
+          addListener(element, EVENT_READY, options.ready, {
+            once: true
+          });
+        }
+
+        dispatchEvent(element, EVENT_READY);
+        dispatchEvent(element, EVENT_CROP, _this3.getData());
+
+        _this3.complete = true;
+      }, 0);
+    }
+  }, {
+    key: 'unbuild',
+    value: function unbuild() {
+      if (!this.ready) {
+        return;
+      }
+
+      if (!this.complete) {
+        clearTimeout(this.completing);
+      }
+
+      this.ready = false;
+      this.complete = false;
+      this.initialImageData = null;
+
+      // Clear `initialCanvasData` is necessary when replace
+      this.initialCanvasData = null;
+      this.initialCropBoxData = null;
+      this.containerData = null;
+      this.canvasData = null;
+
+      // Clear `cropBoxData` is necessary when replace
+      this.cropBoxData = null;
+      this.unbind();
+      this.resetPreview();
+      this.previews = null;
+      this.viewBox = null;
+      this.cropBox = null;
+      this.dragBox = null;
+      this.canvas = null;
+      this.container = null;
+      this.cropper.parentNode.removeChild(this.cropper);
+      this.cropper = null;
+    }
+
+    /**
+     * Get the no conflict cropper class.
+     * @returns {Cropper} The cropper class.
+     */
+
+  }], [{
+    key: 'noConflict',
+    value: function noConflict() {
+      window.Cropper = AnotherCropper;
+      return Cropper;
+    }
+
+    /**
+     * Change the default options.
+     * @param {Object} options - The new default options.
+     */
+
+  }, {
+    key: 'setDefaults',
+    value: function setDefaults(options) {
+      extend(DEFAULTS, isPlainObject(options) && options);
+    }
+  }]);
+  return Cropper;
+}();
+
+extend(Cropper.prototype, render, preview, events, handlers, change, methods);
+
+return Cropper;
+
+})));
diff --git a/js/cropperjs/defaults.js b/js/cropperjs/defaults.js
new file mode 100644
index 0000000..aa469e7
--- /dev/null
+++ b/js/cropperjs/defaults.js
@@ -0,0 +1,99 @@
+import {
+  DRAG_MODE_CROP,
+} from './constants';
+
+export default {
+  // Define the view mode of the cropper
+  viewMode: 0, // 0, 1, 2, 3
+
+  // Define the dragging mode of the cropper
+  dragMode: DRAG_MODE_CROP, // 'crop', 'move' or 'none'
+
+  // Define the aspect ratio of the crop box
+  aspectRatio: NaN,
+
+  // An object with the previous cropping result data
+  data: null,
+
+  // A selector for adding extra containers to preview
+  preview: '',
+
+  // Re-render the cropper when resize the window
+  responsive: true,
+
+  // Restore the cropped area after resize the window
+  restore: true,
+
+  // Check if the current image is a cross-origin image
+  checkCrossOrigin: true,
+
+  // Check the current image's Exif Orientation information
+  checkOrientation: true,
+
+  // Show the black modal
+  modal: true,
+
+  // Show the dashed lines for guiding
+  guides: true,
+
+  // Show the center indicator for guiding
+  center: true,
+
+  // Show the white modal to highlight the crop box
+  highlight: true,
+
+  // Show the grid background
+  background: true,
+
+  // Enable to crop the image automatically when initialize
+  autoCrop: true,
+
+  // Define the percentage of automatic cropping area when initializes
+  autoCropArea: 0.8,
+
+  // Enable to move the image
+  movable: true,
+
+  // Enable to rotate the image
+  rotatable: true,
+
+  // Enable to scale the image
+  scalable: true,
+
+  // Enable to zoom the image
+  zoomable: true,
+
+  // Enable to zoom the image by dragging touch
+  zoomOnTouch: true,
+
+  // Enable to zoom the image by wheeling mouse
+  zoomOnWheel: true,
+
+  // Define zoom ratio when zoom the image by wheeling mouse
+  wheelZoomRatio: 0.1,
+
+  // Enable to move the crop box
+  cropBoxMovable: true,
+
+  // Enable to resize the crop box
+  cropBoxResizable: true,
+
+  // Toggle drag mode between "crop" and "move" when click twice on the cropper
+  toggleDragModeOnDblclick: true,
+
+  // Size limitation
+  minCanvasWidth: 0,
+  minCanvasHeight: 0,
+  minCropBoxWidth: 0,
+  minCropBoxHeight: 0,
+  minContainerWidth: 200,
+  minContainerHeight: 100,
+
+  // Shortcuts of events
+  ready: null,
+  cropstart: null,
+  cropmove: null,
+  cropend: null,
+  crop: null,
+  zoom: null,
+};
diff --git a/js/cropperjs/events.js b/js/cropperjs/events.js
new file mode 100644
index 0000000..3753db0
--- /dev/null
+++ b/js/cropperjs/events.js
@@ -0,0 +1,111 @@
+import {
+  EVENT_CROP,
+  EVENT_CROP_END,
+  EVENT_CROP_MOVE,
+  EVENT_CROP_START,
+  EVENT_DBLCLICK,
+  EVENT_POINTER_DOWN,
+  EVENT_POINTER_MOVE,
+  EVENT_POINTER_UP,
+  EVENT_RESIZE,
+  EVENT_WHEEL,
+  EVENT_ZOOM,
+} from './constants';
+import {
+  addListener,
+  isFunction,
+  proxy,
+  removeListener,
+} from './utilities';
+
+export default {
+  bind() {
+    const { element, options, cropper } = this;
+
+    if (isFunction(options.cropstart)) {
+      addListener(element, EVENT_CROP_START, options.cropstart);
+    }
+
+    if (isFunction(options.cropmove)) {
+      addListener(element, EVENT_CROP_MOVE, options.cropmove);
+    }
+
+    if (isFunction(options.cropend)) {
+      addListener(element, EVENT_CROP_END, options.cropend);
+    }
+
+    if (isFunction(options.crop)) {
+      addListener(element, EVENT_CROP, options.crop);
+    }
+
+    if (isFunction(options.zoom)) {
+      addListener(element, EVENT_ZOOM, options.zoom);
+    }
+
+    addListener(cropper, EVENT_POINTER_DOWN, (this.onCropStart = proxy(this.cropStart, this)));
+
+    if (options.zoomable && options.zoomOnWheel) {
+      addListener(cropper, EVENT_WHEEL, (this.onWheel = proxy(this.wheel, this)));
+    }
+
+    if (options.toggleDragModeOnDblclick) {
+      addListener(cropper, EVENT_DBLCLICK, (this.onDblclick = proxy(this.dblclick, this)));
+    }
+
+    addListener(
+      element.ownerDocument,
+      EVENT_POINTER_MOVE,
+      (this.onCropMove = proxy(this.cropMove, this)),
+    );
+    addListener(
+      element.ownerDocument,
+      EVENT_POINTER_UP,
+      (this.onCropEnd = proxy(this.cropEnd, this)),
+    );
+
+    if (options.responsive) {
+      addListener(window, EVENT_RESIZE, (this.onResize = proxy(this.resize, this)));
+    }
+  },
+
+  unbind() {
+    const { element, options, cropper } = this;
+
+    if (isFunction(options.cropstart)) {
+      removeListener(element, EVENT_CROP_START, options.cropstart);
+    }
+
+    if (isFunction(options.cropmove)) {
+      removeListener(element, EVENT_CROP_MOVE, options.cropmove);
+    }
+
+    if (isFunction(options.cropend)) {
+      removeListener(element, EVENT_CROP_END, options.cropend);
+    }
+
+    if (isFunction(options.crop)) {
+      removeListener(element, EVENT_CROP, options.crop);
+    }
+
+    if (isFunction(options.zoom)) {
+      removeListener(element, EVENT_ZOOM, options.zoom);
+    }
+
+    removeListener(cropper, EVENT_POINTER_DOWN, this.onCropStart);
+
+    if (options.zoomable && options.zoomOnWheel) {
+      removeListener(cropper, EVENT_WHEEL, this.onWheel);
+    }
+
+    if (options.toggleDragModeOnDblclick) {
+      removeListener(cropper, EVENT_DBLCLICK, this.onDblclick);
+    }
+
+    removeListener(element.ownerDocument, EVENT_POINTER_MOVE, this.onCropMove);
+    removeListener(element.ownerDocument, EVENT_POINTER_UP, this.onCropEnd);
+
+    if (options.responsive) {
+      removeListener(window, EVENT_RESIZE, this.onResize);
+    }
+  },
+};
diff --git a/js/cropperjs/handlers.js b/js/cropperjs/handlers.js
new file mode 100644
index 0000000..7b7b246
--- /dev/null
+++ b/js/cropperjs/handlers.js
@@ -0,0 +1,212 @@
+import {
+  ACTION_CROP,
+  ACTION_ZOOM,
+  CLASS_CROP,
+  CLASS_MODAL,
+  DATA_ACTION,
+  DRAG_MODE_CROP,
+  DRAG_MODE_MOVE,
+  DRAG_MODE_NONE,
+  EVENT_CROP_END,
+  EVENT_CROP_MOVE,
+  EVENT_CROP_START,
+  REGEXP_ACTIONS,
+} from './constants';
+import {
+  addClass,
+  dispatchEvent,
+  each,
+  extend,
+  getData,
+  getPointer,
+  hasClass,
+  toggleClass,
+} from './utilities';
+
+export default {
+  resize() {
+    const { options, container, containerData } = this;
+    const minContainerWidth = Number(options.minContainerWidth) || 200;
+    const minContainerHeight = Number(options.minContainerHeight) || 100;
+
+    if (this.disabled || containerData.width <= minContainerWidth ||
+      containerData.height <= minContainerHeight) {
+      return;
+    }
+
+    const ratio = container.offsetWidth / containerData.width;
+
+    // Resize when width changed or height changed
+    if (ratio !== 1 || container.offsetHeight !== containerData.height) {
+      let canvasData;
+      let cropBoxData;
+
+      if (options.restore) {
+        canvasData = this.getCanvasData();
+        cropBoxData = this.getCropBoxData();
+      }
+
+      this.render();
+
+      if (options.restore) {
+        this.setCanvasData(each(canvasData, (n, i) => {
+          canvasData[i] = n * ratio;
+        }));
+        this.setCropBoxData(each(cropBoxData, (n, i) => {
+          cropBoxData[i] = n * ratio;
+        }));
+      }
+    }
+  },
+
+  dblclick() {
+    if (this.disabled || this.options.dragMode === DRAG_MODE_NONE) {
+      return;
+    }
+
+    this.setDragMode(hasClass(this.dragBox, CLASS_CROP) ? DRAG_MODE_MOVE : DRAG_MODE_CROP);
+  },
+
+  wheel(e) {
+    const ratio = Number(this.options.wheelZoomRatio) || 0.1;
+    let delta = 1;
+
+    if (this.disabled) {
+      return;
+    }
+
+    e.preventDefault();
+
+    // Limit wheel speed to prevent zoom too fast (#21)
+    if (this.wheeling) {
+      return;
+    }
+
+    this.wheeling = true;
+
+    setTimeout(() => {
+      this.wheeling = false;
+    }, 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, e);
+  },
+
+  cropStart(e) {
+    if (this.disabled) {
+      return;
+    }
+
+    const { options, pointers } = this;
+    let action;
+
+    if (e.changedTouches) {
+      // Handle touch event
+      each(e.changedTouches, (touch) => {
+        pointers[touch.identifier] = getPointer(touch);
+      });
+    } else {
+      // Handle mouse event and pointer event
+      pointers[e.pointerId || 0] = getPointer(e);
+    }
+
+    if (Object.keys(pointers).length > 1 && options.zoomable && options.zoomOnTouch) {
+      action = ACTION_ZOOM;
+    } else {
+      action = getData(e.target, DATA_ACTION);
+    }
+
+    if (!REGEXP_ACTIONS.test(action)) {
+      return;
+    }
+
+    if (dispatchEvent(this.element, EVENT_CROP_START, {
+      originalEvent: e,
+      action,
+    }) === false) {
+      return;
+    }
+
+    e.preventDefault();
+
+    this.action = action;
+    this.cropping = false;
+
+    if (action === ACTION_CROP) {
+      this.cropping = true;
+      addClass(this.dragBox, CLASS_MODAL);
+    }
+  },
+
+  cropMove(e) {
+    const { action } = this;
+
+    if (this.disabled || !action) {
+      return;
+    }
+
+    const { pointers } = this;
+
+    e.preventDefault();
+
+    if (dispatchEvent(this.element, EVENT_CROP_MOVE, {
+      originalEvent: e,
+      action,
+    }) === false) {
+      return;
+    }
+
+    if (e.changedTouches) {
+      each(e.changedTouches, (touch) => {
+        extend(pointers[touch.identifier], getPointer(touch, true));
+      });
+    } else {
+      extend(pointers[e.pointerId || 0], getPointer(e, true));
+    }
+
+    this.change(e);
+  },
+
+  cropEnd(e) {
+    if (this.disabled) {
+      return;
+    }
+
+    const { action, pointers } = this;
+
+    if (e.changedTouches) {
+      each(e.changedTouches, (touch) => {
+        delete pointers[touch.identifier];
+      });
+    } else {
+      delete pointers[e.pointerId || 0];
+    }
+
+    if (!action) {
+      return;
+    }
+
+    e.preventDefault();
+
+    if (!Object.keys(pointers).length) {
+      this.action = '';
+    }
+
+    if (this.cropping) {
+      this.cropping = false;
+      toggleClass(this.dragBox, CLASS_MODAL, this.cropped && this.options.modal);
+    }
+
+    dispatchEvent(this.element, EVENT_CROP_END, {
+      originalEvent: e,
+      action,
+    });
+  },
+};
diff --git a/js/cropperjs/methods.js b/js/cropperjs/methods.js
new file mode 100644
index 0000000..75ce5a6
--- /dev/null
+++ b/js/cropperjs/methods.js
@@ -0,0 +1,833 @@
+import {
+  CLASS_CROP,
+  CLASS_DISABLED,
+  CLASS_HIDDEN,
+  CLASS_MODAL,
+  CLASS_MOVE,
+  DATA_ACTION,
+  DRAG_MODE_CROP,
+  DRAG_MODE_MOVE,
+  DRAG_MODE_NONE,
+  EVENT_LOAD,
+  EVENT_ZOOM,
+  NAMESPACE,
+} from './constants';
+import {
+  addClass,
+  dispatchEvent,
+  each,
+  extend,
+  getContainSizes,
+  getOffset,
+  getPointersCenter,
+  getSourceCanvas,
+  isFunction,
+  isNumber,
+  isPlainObject,
+  isUndefined,
+  normalizeDecimalNumber,
+  removeClass,
+  removeData,
+  removeListener,
+  setData,
+  toggleClass,
+} from './utilities';
+
+export default {
+  // Show the crop box manually
+  crop() {
+    if (this.ready && !this.disabled) {
+      if (!this.cropped) {
+        this.cropped = true;
+        this.limitCropBox(true, true);
+
+        if (this.options.modal) {
+          addClass(this.dragBox, CLASS_MODAL);
+        }
+
+        removeClass(this.cropBox, CLASS_HIDDEN);
+      }
+
+      this.setCropBoxData(this.initialCropBoxData);
+    }
+
+    return this;
+  },
+
+  // Reset the image and crop box to their initial states
+  reset() {
+    if (this.ready && !this.disabled) {
+      this.imageData = extend({}, this.initialImageData);
+      this.canvasData = extend({}, this.initialCanvasData);
+      this.cropBoxData = extend({}, this.initialCropBoxData);
+      this.renderCanvas();
+
+      if (this.cropped) {
+        this.renderCropBox();
+      }
+    }
+
+    return this;
+  },
+
+  // Clear the crop box
+  clear() {
+    if (this.cropped && !this.disabled) {
+      extend(this.cropBoxData, {
+        left: 0,
+        top: 0,
+        width: 0,
+        height: 0,
+      });
+
+      this.cropped = false;
+      this.renderCropBox();
+      this.limitCanvas(true, true);
+
+      // Render canvas after crop box rendered
+      this.renderCanvas();
+      removeClass(this.dragBox, CLASS_MODAL);
+      addClass(this.cropBox, CLASS_HIDDEN);
+    }
+
+    return this;
+  },
+
+  /**
+   * Replace the image's src and rebuild the cropper
+   * @param {string} url - The new URL.
+   * @param {boolean} [onlyColorChanged] - Indicate if the new image only changed color.
+   * @returns {Object} this
+   */
+  replace(url, onlyColorChanged = false) {
+    if (!this.disabled && url) {
+      if (this.isImg) {
+        this.element.src = url;
+      }
+
+      if (onlyColorChanged) {
+        this.url = url;
+        this.image.src = url;
+
+        if (this.ready) {
+          this.image2.src = url;
+
+          each(this.previews, (element) => {
+            element.getElementsByTagName('img')[0].src = url;
+          });
+        }
+      } else {
+        if (this.isImg) {
+          this.replaced = true;
+        }
+
+        // Clear previous data
+        this.options.data = null;
+        this.load(url);
+      }
+    }
+
+    return this;
+  },
+
+  // Enable (unfreeze) the cropper
+  enable() {
+    if (this.ready) {
+      this.disabled = false;
+      removeClass(this.cropper, CLASS_DISABLED);
+    }
+
+    return this;
+  },
+
+  // Disable (freeze) the cropper
+  disable() {
+    if (this.ready) {
+      this.disabled = true;
+      addClass(this.cropper, CLASS_DISABLED);
+    }
+
+    return this;
+  },
+
+  // Destroy the cropper and remove the instance from the image
+  destroy() {
+    const { element, image } = this;
+
+    if (this.loaded) {
+      if (this.isImg && this.replaced) {
+        element.src = this.originalUrl;
+      }
+
+      this.unbuild();
+      removeClass(element, CLASS_HIDDEN);
+    } else if (this.isImg) {
+      removeListener(element, EVENT_LOAD, this.onStart);
+    } else if (image) {
+      image.parentNode.removeChild(image);
+    }
+
+    removeData(element, NAMESPACE);
+
+    return this;
+  },
+
+  /**
+   * Move the canvas with relative offsets
+   * @param {number} offsetX - The relative offset distance on the x-axis.
+   * @param {number} offsetY - The relative offset distance on the y-axis.
+   * @returns {Object} this
+   */
+  move(offsetX, offsetY) {
+    const { left, top } = this.canvasData;
+
+    return this.moveTo(
+      isUndefined(offsetX) ? offsetX : (left + Number(offsetX)),
+      isUndefined(offsetY) ? offsetY : (top + Number(offsetY)),
+    );
+  },
+
+  /**
+   * Move the canvas to an absolute point
+   * @param {number} x - The x-axis coordinate.
+   * @param {number} [y=x] - The y-axis coordinate.
+   * @returns {Object} this
+   */
+  moveTo(x, y = x) {
+    const { canvasData } = this;
+    let changed = false;
+
+    x = Number(x);
+    y = Number(y);
+
+    if (this.ready && !this.disabled && this.options.movable) {
+      if (isNumber(x)) {
+        canvasData.left = x;
+        changed = true;
+      }
+
+      if (isNumber(y)) {
+        canvasData.top = y;
+        changed = true;
+      }
+
+      if (changed) {
+        this.renderCanvas(true);
+      }
+    }
+
+    return this;
+  },
+
+  /**
+   * Zoom the canvas with a relative ratio
+   * @param {number} ratio - The target ratio.
+   * @param {Event} _originalEvent - The original event if any.
+   * @returns {Object} this
+   */
+  zoom(ratio, _originalEvent) {
+    const { canvasData } = this;
+
+    ratio = Number(ratio);
+
+    if (ratio < 0) {
+      ratio = 1 / (1 - ratio);
+    } else {
+      ratio = 1 + ratio;
+    }
+
+    return this.zoomTo((canvasData.width * ratio) / canvasData.naturalWidth, null, _originalEvent);
+  },
+
+  /**
+   * Zoom the canvas to an absolute ratio
+   * @param {number} ratio - The target ratio.
+   * @param {Object} pivot - The zoom pivot point coordinate.
+   * @param {Event} _originalEvent - The original event if any.
+   * @returns {Object} this
+   */
+  zoomTo(ratio, pivot, _originalEvent) {
+    const { options, canvasData } = this;
+    const {
+      width,
+      height,
+      naturalWidth,
+      naturalHeight,
+    } = canvasData;
+
+    ratio = Number(ratio);
+
+    if (ratio >= 0 && this.ready && !this.disabled && options.zoomable) {
+      const newWidth = naturalWidth * ratio;
+      const newHeight = naturalHeight * ratio;
+
+      if (dispatchEvent(this.element, EVENT_ZOOM, {
+        originalEvent: _originalEvent,
+        oldRatio: width / naturalWidth,
+        ratio: newWidth / naturalWidth,
+      }) === false) {
+        return this;
+      }
+
+      if (_originalEvent) {
+        const { pointers } = this;
+        const offset = getOffset(this.cropper);
+        const center = pointers && Object.keys(pointers).length ? getPointersCenter(pointers) : {
+          pageX: _originalEvent.pageX,
+          pageY: _originalEvent.pageY,
+        };
+
+        // Zoom from the triggering point of the event
+        canvasData.left -= (newWidth - width) * (
+          ((center.pageX - offset.left) - canvasData.left) / width
+        );
+        canvasData.top -= (newHeight - height) * (
+          ((center.pageY - offset.top) - canvasData.top) / height
+        );
+      } else if (isPlainObject(pivot) && isNumber(pivot.x) && isNumber(pivot.y)) {
+        canvasData.left -= (newWidth - width) * (
+          (pivot.x - canvasData.left) / width
+        );
+        canvasData.top -= (newHeight - height) * (
+          (pivot.y - canvasData.top) / height
+        );
+      } else {
+        // Zoom from the center of the canvas
+        canvasData.left -= (newWidth - width) / 2;
+        canvasData.top -= (newHeight - height) / 2;
+      }
+
+      canvasData.width = newWidth;
+      canvasData.height = newHeight;
+      this.renderCanvas(true);
+    }
+
+    return this;
+  },
+
+  /**
+   * Rotate the canvas with a relative degree
+   * @param {number} degree - The rotate degree.
+   * @returns {Object} this
+   */
+  rotate(degree) {
+    return this.rotateTo((this.imageData.rotate || 0) + Number(degree));
+  },
+
+  /**
+   * Rotate the canvas to an absolute degree
+   * @param {number} degree - The rotate degree.
+   * @returns {Object} this
+   */
+  rotateTo(degree) {
+    degree = Number(degree);
+
+    if (isNumber(degree) && this.ready && !this.disabled && this.options.rotatable) {
+      this.imageData.rotate = degree % 360;
+      this.renderCanvas(true, true);
+    }
+
+    return this;
+  },
+
+  /**
+   * Scale the image on the x-axis.
+   * @param {number} scaleX - The scale ratio on the x-axis.
+   * @returns {Object} this
+   */
+  scaleX(scaleX) {
+    const { scaleY } = this.imageData;
+
+    return this.scale(scaleX, isNumber(scaleY) ? scaleY : 1);
+  },
+
+  /**
+   * Scale the image on the y-axis.
+   * @param {number} scaleY - The scale ratio on the y-axis.
+   * @returns {Object} this
+   */
+  scaleY(scaleY) {
+    const { scaleX } = this.imageData;
+
+    return this.scale(isNumber(scaleX) ? scaleX : 1, scaleY);
+  },
+
+  /**
+   * Scale the image
+   * @param {number} scaleX - The scale ratio on the x-axis.
+   * @param {number} [scaleY=scaleX] - The scale ratio on the y-axis.
+   * @returns {Object} this
+   */
+  scale(scaleX, scaleY = scaleX) {
+    const { imageData } = this;
+    let transformed = false;
+
+    scaleX = Number(scaleX);
+    scaleY = Number(scaleY);
+
+    if (this.ready && !this.disabled && this.options.scalable) {
+      if (isNumber(scaleX)) {
+        imageData.scaleX = scaleX;
+        transformed = true;
+      }
+
+      if (isNumber(scaleY)) {
+        imageData.scaleY = scaleY;
+        transformed = true;
+      }
+
+      if (transformed) {
+        this.renderCanvas(true, true);
+      }
+    }
+
+    return this;
+  },
+
+  /**
+   * Get the cropped area position and size data (base on the original image)
+   * @param {boolean} [rounded=false] - Indicate if round the data values or not.
+   * @returns {Object} The result cropped data.
+   */
+  getData(rounded = false) {
+    const {
+      options,
+      imageData,
+      canvasData,
+      cropBoxData,
+    } = this;
+    let data;
+
+    if (this.ready && this.cropped) {
+      data = {
+        x: cropBoxData.left - canvasData.left,
+        y: cropBoxData.top - canvasData.top,
+        width: cropBoxData.width,
+        height: cropBoxData.height,
+      };
+
+      const ratio = imageData.width / imageData.naturalWidth;
+
+      each(data, (n, i) => {
+        n /= ratio;
+        data[i] = rounded ? Math.round(n) : n;
+      });
+    } else {
+      data = {
+        x: 0,
+        y: 0,
+        width: 0,
+        height: 0,
+      };
+    }
+
+    if (options.rotatable) {
+      data.rotate = imageData.rotate || 0;
+    }
+
+    if (options.scalable) {
+      data.scaleX = imageData.scaleX || 1;
+      data.scaleY = imageData.scaleY || 1;
+    }
+
+    return data;
+  },
+
+  /**
+   * Set the cropped area position and size with new data
+   * @param {Object} data - The new data.
+   * @returns {Object} this
+   */
+  setData(data) {
+    const { options, imageData, canvasData } = this;
+    const cropBoxData = {};
+
+    if (isFunction(data)) {
+      data = data.call(this.element);
+    }
+
+    if (this.ready && !this.disabled && isPlainObject(data)) {
+      let transformed = false;
+
+      if (options.rotatable) {
+        if (isNumber(data.rotate) && data.rotate !== imageData.rotate) {
+          imageData.rotate = data.rotate;
+          transformed = true;
+        }
+      }
+
+      if (options.scalable) {
+        if (isNumber(data.scaleX) && data.scaleX !== imageData.scaleX) {
+          imageData.scaleX = data.scaleX;
+          transformed = true;
+        }
+
+        if (isNumber(data.scaleY) && data.scaleY !== imageData.scaleY) {
+          imageData.scaleY = data.scaleY;
+          transformed = true;
+        }
+      }
+
+      if (transformed) {
+        this.renderCanvas(true, true);
+      }
+
+      const ratio = imageData.width / imageData.naturalWidth;
+
+      if (isNumber(data.x)) {
+        cropBoxData.left = (data.x * ratio) + canvasData.left;
+      }
+
+      if (isNumber(data.y)) {
+        cropBoxData.top = (data.y * ratio) + canvasData.top;
+      }
+
+      if (isNumber(data.width)) {
+        cropBoxData.width = data.width * ratio;
+      }
+
+      if (isNumber(data.height)) {
+        cropBoxData.height = data.height * ratio;
+      }
+
+      this.setCropBoxData(cropBoxData);
+    }
+
+    return this;
+  },
+
+  /**
+   * Get the container size data.
+   * @returns {Object} The result container data.
+   */
+  getContainerData() {
+    return this.ready ? extend({}, this.containerData) : {};
+  },
+
+  /**
+   * Get the image position and size data.
+   * @returns {Object} The result image data.
+   */
+  getImageData() {
+    return this.loaded ? extend({}, this.imageData) : {};
+  },
+
+  /**
+   * Get the canvas position and size data.
+   * @returns {Object} The result canvas data.
+   */
+  getCanvasData() {
+    const { canvasData } = this;
+    const data = {};
+
+    if (this.ready) {
+      each([
+        'left',
+        'top',
+        'width',
+        'height',
+        'naturalWidth',
+        'naturalHeight',
+      ], (n) => {
+        data[n] = canvasData[n];
+      });
+    }
+
+    return data;
+  },
+
+  /**
+   * Set the canvas position and size with new data.
+   * @param {Object} data - The new canvas data.
+   * @returns {Object} this
+   */
+  setCanvasData(data) {
+    const { canvasData } = this;
+    const { aspectRatio } = canvasData;
+
+    if (isFunction(data)) {
+      data = data.call(this.element);
+    }
+
+    if (this.ready && !this.disabled && isPlainObject(data)) {
+      if (isNumber(data.left)) {
+        canvasData.left = data.left;
+      }
+
+      if (isNumber(data.top)) {
+        canvasData.top = data.top;
+      }
+
+      if (isNumber(data.width)) {
+        canvasData.width = data.width;
+        canvasData.height = data.width / aspectRatio;
+      } else if (isNumber(data.height)) {
+        canvasData.height = data.height;
+        canvasData.width = data.height * aspectRatio;
+      }
+
+      this.renderCanvas(true);
+    }
+
+    return this;
+  },
+
+  /**
+   * Get the crop box position and size data.
+   * @returns {Object} The result crop box data.
+   */
+  getCropBoxData() {
+    const { cropBoxData } = this;
+    let data;
+
+    if (this.ready && this.cropped) {
+      data = {
+        left: cropBoxData.left,
+        top: cropBoxData.top,
+        width: cropBoxData.width,
+        height: cropBoxData.height,
+      };
+    }
+
+    return data || {};
+  },
+
+  /**
+   * Set the crop box position and size with new data.
+   * @param {Object} data - The new crop box data.
+   * @returns {Object} this
+   */
+  setCropBoxData(data) {
+    const { cropBoxData } = this;
+    const { aspectRatio } = this.options;
+    let widthChanged;
+    let heightChanged;
+
+    if (isFunction(data)) {
+      data = data.call(this.element);
+    }
+
+    if (this.ready && this.cropped && !this.disabled && isPlainObject(data)) {
+      if (isNumber(data.left)) {
+        cropBoxData.left = data.left;
+      }
+
+      if (isNumber(data.top)) {
+        cropBoxData.top = data.top;
+      }
+
+      if (isNumber(data.width) && data.width !== cropBoxData.width) {
+        widthChanged = true;
+        cropBoxData.width = data.width;
+      }
+
+      if (isNumber(data.height) && data.height !== cropBoxData.height) {
+        heightChanged = true;
+        cropBoxData.height = data.height;
+      }
+
+      if (aspectRatio) {
+        if (widthChanged) {
+          cropBoxData.height = cropBoxData.width / aspectRatio;
+        } else if (heightChanged) {
+          cropBoxData.width = cropBoxData.height * aspectRatio;
+        }
+      }
+
+      this.renderCropBox();
+    }
+
+    return this;
+  },
+
+  /**
+   * Get a canvas drawn the cropped image.
+   * @param {Object} [options={}] - The config options.
+   * @returns {HTMLCanvasElement} - The result canvas.
+   */
+  getCroppedCanvas(options = {}) {
+    if (!this.ready || !window.HTMLCanvasElement) {
+      return null;
+    }
+
+    const { canvasData } = this;
+    const source = getSourceCanvas(this.image, this.imageData, canvasData, options);
+
+    // Returns the source canvas if it is not cropped.
+    if (!this.cropped) {
+      return source;
+    }
+
+    const {
+      x,
+      y,
+      width: initialWidth,
+      height: initialHeight,
+    } = this.getData();
+    const aspectRatio = initialWidth / initialHeight;
+    const maxSizes = getContainSizes({
+      aspectRatio,
+      width: options.maxWidth || Infinity,
+      height: options.maxHeight || Infinity,
+    });
+    const minSizes = getContainSizes({
+      aspectRatio,
+      width: options.minWidth || 0,
+      height: options.minHeight || 0,
+    });
+    let {
+      width,
+      height,
+    } = getContainSizes({
+      aspectRatio,
+      width: options.width || initialWidth,
+      height: options.height || initialHeight,
+    });
+
+    width = Math.min(maxSizes.width, Math.max(minSizes.width, width));
+    height = Math.min(maxSizes.height, Math.max(minSizes.height, height));
+
+    const canvas = document.createElement('canvas');
+    const context = canvas.getContext('2d');
+
+    canvas.width = normalizeDecimalNumber(width);
+    canvas.height = normalizeDecimalNumber(height);
+
+    context.fillStyle = options.fillColor || 'transparent';
+    context.fillRect(0, 0, width, height);
+
+    const { imageSmoothingEnabled = true, imageSmoothingQuality } = options;
+
+    context.imageSmoothingEnabled = imageSmoothingEnabled;
+
+    if (imageSmoothingQuality) {
+      context.imageSmoothingQuality = imageSmoothingQuality;
+    }
+
+    // https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D.drawImage
+    const sourceWidth = source.width;
+    const sourceHeight = source.height;
+
+    // Source canvas parameters
+    let srcX = x;
+    let srcY = y;
+    let srcWidth;
+    let srcHeight;
+
+    // Destination canvas parameters
+    let dstX;
+    let dstY;
+    let dstWidth;
+    let dstHeight;
+
+    if (srcX <= -initialWidth || srcX > sourceWidth) {
+      srcX = 0;
+      srcWidth = 0;
+      dstX = 0;
+      dstWidth = 0;
+    } else if (srcX <= 0) {
+      dstX = -srcX;
+      srcX = 0;
+      srcWidth = Math.min(sourceWidth, initialWidth + srcX);
+      dstWidth = srcWidth;
+    } else if (srcX <= sourceWidth) {
+      dstX = 0;
+      srcWidth = Math.min(initialWidth, sourceWidth - srcX);
+      dstWidth = srcWidth;
+    }
+
+    if (srcWidth <= 0 || srcY <= -initialHeight || srcY > sourceHeight) {
+      srcY = 0;
+      srcHeight = 0;
+      dstY = 0;
+      dstHeight = 0;
+    } else if (srcY <= 0) {
+      dstY = -srcY;
+      srcY = 0;
+      srcHeight = Math.min(sourceHeight, initialHeight + srcY);
+      dstHeight = srcHeight;
+    } else if (srcY <= sourceHeight) {
+      dstY = 0;
+      srcHeight = Math.min(initialHeight, sourceHeight - srcY);
+      dstHeight = srcHeight;
+    }
+
+    // All the numerical parameters should be integer for `drawImage`
+    // https://github.com/fengyuanchen/cropper/issues/476
+    const params = [
+      srcX,
+      srcY,
+      srcWidth,
+      srcHeight,
+    ];
+
+    // Avoid "IndexSizeError"
+    if (dstWidth > 0 && dstHeight > 0) {
+      const scale = width / initialWidth;
+
+      params.push(
+        dstX * scale,
+        dstY * scale,
+        dstWidth * scale,
+        dstHeight * scale,
+      );
+    }
+
+    context.drawImage(source, ...params.map(param => Math.floor(normalizeDecimalNumber(param))));
+
+    return canvas;
+  },
+
+  /**
+   * Change the aspect ratio of the crop box.
+   * @param {number} aspectRatio - The new aspect ratio.
+   * @returns {Object} this
+   */
+  setAspectRatio(aspectRatio) {
+    const { options } = this;
+
+    if (!this.disabled && !isUndefined(aspectRatio)) {
+      // 0 -> NaN
+      options.aspectRatio = Math.max(0, aspectRatio) || NaN;
+
+      if (this.ready) {
+        this.initCropBox();
+
+        if (this.cropped) {
+          this.renderCropBox();
+        }
+      }
+    }
+
+    return this;
+  },
+
+  /**
+   * Change the drag mode.
+   * @param {string} mode - The new drag mode.
+   * @returns {Object} this
+   */
+  setDragMode(mode) {
+    const { options, dragBox, face } = this;
+
+    if (this.loaded && !this.disabled) {
+      const croppable = mode === DRAG_MODE_CROP;
+      const movable = options.movable && mode === DRAG_MODE_MOVE;
+
+      mode = (croppable || movable) ? mode : DRAG_MODE_NONE;
+
+      setData(dragBox, DATA_ACTION, mode);
+      toggleClass(dragBox, CLASS_CROP, croppable);
+      toggleClass(dragBox, CLASS_MOVE, movable);
+
+      if (!options.cropBoxMovable) {
+        // Sync drag mode to crop box when it is not movable
+        setData(face, DATA_ACTION, mode);
+        toggleClass(face, CLASS_CROP, croppable);
+        toggleClass(face, CLASS_MOVE, movable);
+      }
+    }
+
+    return this;
+  },
+};
diff --git a/js/cropperjs/preview.js b/js/cropperjs/preview.js
new file mode 100644
index 0000000..c47d03f
--- /dev/null
+++ b/js/cropperjs/preview.js
@@ -0,0 +1,142 @@
+import {
+  DATA_PREVIEW,
+} from './constants';
+import {
+  each,
+  empty,
+  extend,
+  getData,
+  getTransforms,
+  removeData,
+  setData,
+  setStyle,
+} from './utilities';
+
+export default {
+  initPreview() {
+    const { crossOrigin } = this;
+    const { preview } = this.options;
+    const url = crossOrigin ? this.crossOriginUrl : this.url;
+    const image = document.createElement('img');
+
+    if (crossOrigin) {
+      image.crossOrigin = crossOrigin;
+    }
+
+    image.src = url;
+    this.viewBox.appendChild(image);
+    this.image2 = image;
+
+    if (!preview) {
+      return;
+    }
+
+    const previews = preview.querySelector ? [preview] : document.querySelectorAll(preview);
+
+    this.previews = previews;
+
+    each(previews, (element) => {
+      const img = document.createElement('img');
+
+      // Save the original size for recover
+      setData(element, DATA_PREVIEW, {
+        width: element.offsetWidth,
+        height: element.offsetHeight,
+        html: element.innerHTML,
+      });
+
+      if (crossOrigin) {
+        img.crossOrigin = crossOrigin;
+      }
+
+      img.src = url;
+
+      /**
+       * Override img element styles
+       * Add `display:block` to avoid margin top issue
+       * Add `height:auto` to override `height` attribute on IE8
+       * (Occur only when margin-top <= -height)
+       */
+      img.style.cssText = (
+        '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;"'
+      );
+
+      empty(element);
+      element.appendChild(img);
+    });
+  },
+
+  resetPreview() {
+    each(this.previews, (element) => {
+      const data = getData(element, DATA_PREVIEW);
+
+      setStyle(element, {
+        width: data.width,
+        height: data.height,
+      });
+
+      element.innerHTML = data.html;
+      removeData(element, DATA_PREVIEW);
+    });
+  },
+
+  preview() {
+    const { imageData, canvasData, cropBoxData } = this;
+    const { width: cropBoxWidth, height: cropBoxHeight } = cropBoxData;
+    const { width, height } = imageData;
+    const left = cropBoxData.left - canvasData.left - imageData.left;
+    const top = cropBoxData.top - canvasData.top - imageData.top;
+
+    if (!this.cropped || this.disabled) {
+      return;
+    }
+
+    setStyle(this.image2, extend({
+      width,
+      height,
+    }, getTransforms(extend({
+      translateX: -left,
+      translateY: -top,
+    }, imageData))));
+
+    each(this.previews, (element) => {
+      const data = getData(element, DATA_PREVIEW);
+      const originalWidth = data.width;
+      const originalHeight = data.height;
+      let newWidth = originalWidth;
+      let newHeight = originalHeight;
+      let ratio = 1;
+
+      if (cropBoxWidth) {
+        ratio = originalWidth / cropBoxWidth;
+        newHeight = cropBoxHeight * ratio;
+      }
+
+      if (cropBoxHeight && newHeight > originalHeight) {
+        ratio = originalHeight / cropBoxHeight;
+        newWidth = cropBoxWidth * ratio;
+        newHeight = originalHeight;
+      }
+
+      setStyle(element, {
+        width: newWidth,
+        height: newHeight,
+      });
+
+      setStyle(element.getElementsByTagName('img')[0], extend({
+        width: width * ratio,
+        height: height * ratio,
+      }, getTransforms(extend({
+        translateX: -left * ratio,
+        translateY: -top * ratio,
+      }, imageData))));
+    });
+  },
+};
diff --git a/js/cropperjs/render.js b/js/cropperjs/render.js
new file mode 100644
index 0000000..a95b668
--- /dev/null
+++ b/js/cropperjs/render.js
@@ -0,0 +1,495 @@
+import {
+  ACTION_ALL,
+  ACTION_MOVE,
+  CLASS_HIDDEN,
+  DATA_ACTION,
+  EVENT_CROP,
+} from './constants';
+import {
+  addClass,
+  dispatchEvent,
+  extend,
+  getContainSizes,
+  getRotatedSizes,
+  getTransforms,
+  removeClass,
+  setData,
+  setStyle,
+} from './utilities';
+
+export default {
+  render() {
+    this.initContainer();
+    this.initCanvas();
+    this.initCropBox();
+    this.renderCanvas();
+
+    if (this.cropped) {
+      this.renderCropBox();
+    }
+  },
+
+  initContainer() {
+    const {
+      element,
+      options,
+      container,
+      cropper,
+    } = this;
+
+    addClass(cropper, CLASS_HIDDEN);
+    removeClass(element, CLASS_HIDDEN);
+
+    const containerData = {
+      width: Math.max(
+        container.offsetWidth,
+        Number(options.minContainerWidth) || 200,
+      ),
+      height: Math.max(
+        container.offsetHeight,
+        Number(options.minContainerHeight) || 100,
+      ),
+    };
+
+    this.containerData = containerData;
+
+    setStyle(cropper, {
+      width: containerData.width,
+      height: containerData.height,
+    });
+
+    addClass(element, CLASS_HIDDEN);
+    removeClass(cropper, CLASS_HIDDEN);
+  },
+
+  // Canvas (image wrapper)
+  initCanvas() {
+    const { containerData, imageData } = this;
+    const { viewMode } = this.options;
+    const rotated = Math.abs(imageData.rotate) % 180 === 90;
+    const naturalWidth = rotated ? imageData.naturalHeight : imageData.naturalWidth;
+    const naturalHeight = rotated ? imageData.naturalWidth : imageData.naturalHeight;
+    const aspectRatio = naturalWidth / naturalHeight;
+    let canvasWidth = containerData.width;
+    let canvasHeight = containerData.height;
+
+    if (containerData.height * aspectRatio > containerData.width) {
+      if (viewMode === 3) {
+        canvasWidth = containerData.height * aspectRatio;
+      } else {
+        canvasHeight = containerData.width / aspectRatio;
+      }
+    } else if (viewMode === 3) {
+      canvasHeight = containerData.width / aspectRatio;
+    } else {
+      canvasWidth = containerData.height * aspectRatio;
+    }
+
+    const canvasData = {
+      aspectRatio,
+      naturalWidth,
+      naturalHeight,
+      width: canvasWidth,
+      height: canvasHeight,
+    };
+
+    canvasData.left = (containerData.width - canvasWidth) / 2;
+    canvasData.top = (containerData.height - canvasHeight) / 2;
+    canvasData.oldLeft = canvasData.left;
+    canvasData.oldTop = canvasData.top;
+
+    this.canvasData = canvasData;
+    this.limited = (viewMode === 1 || viewMode === 2);
+    this.limitCanvas(true, true);
+    this.initialImageData = extend({}, imageData);
+    this.initialCanvasData = extend({}, canvasData);
+  },
+
+  limitCanvas(sizeLimited, positionLimited) {
+    const {
+      options,
+      containerData,
+      canvasData,
+      cropBoxData,
+    } = this;
+    const { viewMode } = options;
+    const { aspectRatio } = canvasData;
+    const cropped = this.cropped && cropBoxData;
+
+    if (sizeLimited) {
+      let minCanvasWidth = Number(options.minCanvasWidth) || 0;
+      let minCanvasHeight = Number(options.minCanvasHeight) || 0;
+
+      if (viewMode > 1) {
+        minCanvasWidth = Math.max(minCanvasWidth, containerData.width);
+        minCanvasHeight = Math.max(minCanvasHeight, containerData.height);
+
+        if (viewMode === 3) {
+          if (minCanvasHeight * aspectRatio > minCanvasWidth) {
+            minCanvasWidth = minCanvasHeight * aspectRatio;
+          } else {
+            minCanvasHeight = minCanvasWidth / aspectRatio;
+          }
+        }
+      } else if (viewMode > 0) {
+        if (minCanvasWidth) {
+          minCanvasWidth = Math.max(
+            minCanvasWidth,
+            cropped ? cropBoxData.width : 0,
+          );
+        } else if (minCanvasHeight) {
+          minCanvasHeight = Math.max(
+            minCanvasHeight,
+            cropped ? cropBoxData.height : 0,
+          );
+        } else if (cropped) {
+          minCanvasWidth = cropBoxData.width;
+          minCanvasHeight = cropBoxData.height;
+
+          if (minCanvasHeight * aspectRatio > minCanvasWidth) {
+            minCanvasWidth = minCanvasHeight * aspectRatio;
+          } else {
+            minCanvasHeight = minCanvasWidth / aspectRatio;
+          }
+        }
+      }
+
+      ({ width: minCanvasWidth, height: minCanvasHeight } = getContainSizes({
+        aspectRatio,
+        width: minCanvasWidth,
+        height: minCanvasHeight,
+      }));
+
+      canvasData.minWidth = minCanvasWidth;
+      canvasData.minHeight = minCanvasHeight;
+      canvasData.maxWidth = Infinity;
+      canvasData.maxHeight = Infinity;
+    }
+
+    if (positionLimited) {
+      if (viewMode) {
+        const newCanvasLeft = containerData.width - canvasData.width;
+        const newCanvasTop = containerData.height - canvasData.height;
+
+        canvasData.minLeft = Math.min(0, newCanvasLeft);
+        canvasData.minTop = Math.min(0, newCanvasTop);
+        canvasData.maxLeft = Math.max(0, newCanvasLeft);
+        canvasData.maxTop = Math.max(0, newCanvasTop);
+
+        if (cropped && this.limited) {
+          canvasData.minLeft = Math.min(
+            cropBoxData.left,
+            cropBoxData.left + (cropBoxData.width - canvasData.width),
+          );
+          canvasData.minTop = Math.min(
+            cropBoxData.top,
+            cropBoxData.top + (cropBoxData.height - canvasData.height),
+          );
+          canvasData.maxLeft = cropBoxData.left;
+          canvasData.maxTop = cropBoxData.top;
+
+          if (viewMode === 2) {
+            if (canvasData.width >= containerData.width) {
+              canvasData.minLeft = Math.min(0, newCanvasLeft);
+              canvasData.maxLeft = Math.max(0, newCanvasLeft);
+            }
+
+            if (canvasData.height >= containerData.height) {
+              canvasData.minTop = Math.min(0, newCanvasTop);
+              canvasData.maxTop = Math.max(0, newCanvasTop);
+            }
+          }
+        }
+      } else {
+        canvasData.minLeft = -canvasData.width;
+        canvasData.minTop = -canvasData.height;
+        canvasData.maxLeft = containerData.width;
+        canvasData.maxTop = containerData.height;
+      }
+    }
+  },
+
+  renderCanvas(changed, transformed) {
+    const { canvasData, imageData } = this;
+
+    if (transformed) {
+      const { width: naturalWidth, height: naturalHeight } = getRotatedSizes({
+        width: imageData.naturalWidth * Math.abs(imageData.scaleX || 1),
+        height: imageData.naturalHeight * Math.abs(imageData.scaleY || 1),
+        degree: imageData.rotate || 0,
+      });
+      const width = canvasData.width * (naturalWidth / canvasData.naturalWidth);
+      const height = canvasData.height * (naturalHeight / canvasData.naturalHeight);
+
+      canvasData.left -= (width - canvasData.width) / 2;
+      canvasData.top -= (height - canvasData.height) / 2;
+      canvasData.width = width;
+      canvasData.height = height;
+      canvasData.aspectRatio = naturalWidth / naturalHeight;
+      canvasData.naturalWidth = naturalWidth;
+      canvasData.naturalHeight = naturalHeight;
+      this.limitCanvas(true, false);
+    }
+
+    if (canvasData.width > canvasData.maxWidth ||
+      canvasData.width < canvasData.minWidth) {
+      canvasData.left = canvasData.oldLeft;
+    }
+
+    if (canvasData.height > canvasData.maxHeight ||
+      canvasData.height < canvasData.minHeight) {
+      canvasData.top = canvasData.oldTop;
+    }
+
+    canvasData.width = Math.min(
+      Math.max(canvasData.width, canvasData.minWidth),
+      canvasData.maxWidth,
+    );
+    canvasData.height = Math.min(
+      Math.max(canvasData.height, canvasData.minHeight),
+      canvasData.maxHeight,
+    );
+
+    this.limitCanvas(false, true);
+
+    canvasData.left = Math.min(
+      Math.max(canvasData.left, canvasData.minLeft),
+      canvasData.maxLeft,
+    );
+    canvasData.top = Math.min(
+      Math.max(canvasData.top, canvasData.minTop),
+      canvasData.maxTop,
+    );
+    canvasData.oldLeft = canvasData.left;
+    canvasData.oldTop = canvasData.top;
+
+    setStyle(this.canvas, extend({
+      width: canvasData.width,
+      height: canvasData.height,
+    }, getTransforms({
+      translateX: canvasData.left,
+      translateY: canvasData.top,
+    })));
+
+    this.renderImage(changed);
+
+    if (this.cropped && this.limited) {
+      this.limitCropBox(true, true);
+    }
+  },
+
+  renderImage(changed) {
+    const { canvasData, imageData } = this;
+    const width = imageData.naturalWidth * (canvasData.width / canvasData.naturalWidth);
+    const height = imageData.naturalHeight * (canvasData.height / canvasData.naturalHeight);
+
+    extend(imageData, {
+      width,
+      height,
+      left: (canvasData.width - width) / 2,
+      top: (canvasData.height - height) / 2,
+    });
+    setStyle(this.image, extend({
+      width: imageData.width,
+      height: imageData.height,
+    }, getTransforms(extend({
+      translateX: imageData.left,
+      translateY: imageData.top,
+    }, imageData))));
+
+    if (changed) {
+      this.output();
+    }
+  },
+
+  initCropBox() {
+    const { options, canvasData } = this;
+    const { aspectRatio } = options;
+    const autoCropArea = Number(options.autoCropArea) || 0.8;
+    const cropBoxData = {
+      width: canvasData.width,
+      height: canvasData.height,
+    };
+
+    if (aspectRatio) {
+      if (canvasData.height * aspectRatio > canvasData.width) {
+        cropBoxData.height = cropBoxData.width / aspectRatio;
+      } else {
+        cropBoxData.width = cropBoxData.height * aspectRatio;
+      }
+    }
+
+    this.cropBoxData = cropBoxData;
+    this.limitCropBox(true, true);
+
+    // Initialize auto crop area
+    cropBoxData.width = Math.min(
+      Math.max(cropBoxData.width, cropBoxData.minWidth),
+      cropBoxData.maxWidth,
+    );
+    cropBoxData.height = Math.min(
+      Math.max(cropBoxData.height, cropBoxData.minHeight),
+      cropBoxData.maxHeight,
+    );
+
+    // The width/height of auto crop area must large than "minWidth/Height"
+    cropBoxData.width = Math.max(
+      cropBoxData.minWidth,
+      cropBoxData.width * autoCropArea,
+    );
+    cropBoxData.height = Math.max(
+      cropBoxData.minHeight,
+      cropBoxData.height * autoCropArea,
+    );
+    cropBoxData.left = (
+      canvasData.left + ((canvasData.width - cropBoxData.width) / 2)
+    );
+    cropBoxData.top = (
+      canvasData.top + ((canvasData.height - cropBoxData.height) / 2)
+    );
+    cropBoxData.oldLeft = cropBoxData.left;
+    cropBoxData.oldTop = cropBoxData.top;
+
+    this.initialCropBoxData = extend({}, cropBoxData);
+  },
+
+  limitCropBox(sizeLimited, positionLimited) {
+    const {
+      options,
+      containerData,
+      canvasData,
+      cropBoxData,
+      limited,
+    } = this;
+    const { aspectRatio } = options;
+
+    if (sizeLimited) {
+      let minCropBoxWidth = Number(options.minCropBoxWidth) || 0;
+      let minCropBoxHeight = Number(options.minCropBoxHeight) || 0;
+      let maxCropBoxWidth = Math.min(
+        containerData.width,
+        limited ? canvasData.width : containerData.width,
+      );
+      let maxCropBoxHeight = Math.min(
+        containerData.height,
+        limited ? canvasData.height : containerData.height,
+      );
+
+      // The min/maxCropBoxWidth/Height must be less than container's width/height
+      minCropBoxWidth = Math.min(minCropBoxWidth, containerData.width);
+      minCropBoxHeight = Math.min(minCropBoxHeight, containerData.height);
+
+      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
+      cropBoxData.minWidth = Math.min(minCropBoxWidth, maxCropBoxWidth);
+      cropBoxData.minHeight = Math.min(minCropBoxHeight, maxCropBoxHeight);
+      cropBoxData.maxWidth = maxCropBoxWidth;
+      cropBoxData.maxHeight = maxCropBoxHeight;
+    }
+
+    if (positionLimited) {
+      if (limited) {
+        cropBoxData.minLeft = Math.max(0, canvasData.left);
+        cropBoxData.minTop = Math.max(0, canvasData.top);
+        cropBoxData.maxLeft = Math.min(
+          containerData.width,
+          canvasData.left + canvasData.width,
+        ) - cropBoxData.width;
+        cropBoxData.maxTop = Math.min(
+          containerData.height,
+          canvasData.top + canvasData.height,
+        ) - cropBoxData.height;
+      } else {
+        cropBoxData.minLeft = 0;
+        cropBoxData.minTop = 0;
+        cropBoxData.maxLeft = containerData.width - cropBoxData.width;
+        cropBoxData.maxTop = containerData.height - cropBoxData.height;
+      }
+    }
+  },
+
+  renderCropBox() {
+    const { options, containerData, cropBoxData } = this;
+
+    if (cropBoxData.width > cropBoxData.maxWidth ||
+      cropBoxData.width < cropBoxData.minWidth) {
+      cropBoxData.left = cropBoxData.oldLeft;
+    }
+
+    if (cropBoxData.height > cropBoxData.maxHeight ||
+      cropBoxData.height < cropBoxData.minHeight) {
+      cropBoxData.top = cropBoxData.oldTop;
+    }
+
+    cropBoxData.width = Math.min(
+      Math.max(cropBoxData.width, cropBoxData.minWidth),
+      cropBoxData.maxWidth,
+    );
+    cropBoxData.height = Math.min(
+      Math.max(cropBoxData.height, cropBoxData.minHeight),
+      cropBoxData.maxHeight,
+    );
+
+    this.limitCropBox(false, true);
+
+    cropBoxData.left = Math.min(
+      Math.max(cropBoxData.left, cropBoxData.minLeft),
+      cropBoxData.maxLeft,
+    );
+    cropBoxData.top = Math.min(
+      Math.max(cropBoxData.top, cropBoxData.minTop),
+      cropBoxData.maxTop,
+    );
+    cropBoxData.oldLeft = cropBoxData.left;
+    cropBoxData.oldTop = cropBoxData.top;
+
+    if (options.movable && options.cropBoxMovable) {
+      // Turn to move the canvas when the crop box is equal to the container
+      setData(this.face, DATA_ACTION, cropBoxData.width >= containerData.width &&
+        cropBoxData.height >= containerData.height ? ACTION_MOVE : ACTION_ALL);
+    }
+
+    setStyle(this.cropBox, extend({
+      width: cropBoxData.width,
+      height: cropBoxData.height,
+    }, getTransforms({
+      translateX: cropBoxData.left,
+      translateY: cropBoxData.top,
+    })));
+
+    if (this.cropped && this.limited) {
+      this.limitCanvas(true, true);
+    }
+
+    if (!this.disabled) {
+      this.output();
+    }
+  },
+
+  output() {
+    this.preview();
+
+    if (this.complete) {
+      dispatchEvent(this.element, EVENT_CROP, this.getData());
+    }
+  },
+};
diff --git a/js/cropperjs/template.js b/js/cropperjs/template.js
new file mode 100644
index 0000000..589b46a
--- /dev/null
+++ b/js/cropperjs/template.js
@@ -0,0 +1,27 @@
+export default (
+  '<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>'
+);
diff --git a/js/cropperjs/utilities.js b/js/cropperjs/utilities.js
new file mode 100644
index 0000000..e6b6e9c
--- /dev/null
+++ b/js/cropperjs/utilities.js
@@ -0,0 +1,973 @@
+import {
+  WINDOW,
+} from './constants';
+
+/**
+ * Check if the given value is not a number.
+ */
+export const isNaN = Number.isNaN || WINDOW.isNaN;
+
+/**
+ * Check if the given value is a number.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a number, else `false`.
+ */
+export function isNumber(value) {
+  return typeof value === 'number' && !isNaN(value);
+}
+
+/**
+ * Check if the given value is undefined.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is undefined, else `false`.
+ */
+export function isUndefined(value) {
+  return typeof value === 'undefined';
+}
+
+/**
+ * Check if the given value is an object.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is an object, else `false`.
+ */
+export function isObject(value) {
+  return typeof value === 'object' && value !== null;
+}
+
+const { hasOwnProperty } = Object.prototype;
+
+/**
+ * Check if the given value is a plain object.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a plain object, else `false`.
+ */
+export function isPlainObject(value) {
+  if (!isObject(value)) {
+    return false;
+  }
+
+  try {
+    const { constructor } = value;
+    const { prototype } = constructor;
+
+    return constructor && prototype && hasOwnProperty.call(prototype, 'isPrototypeOf');
+  } catch (e) {
+    return false;
+  }
+}
+
+/**
+ * Check if the given value is a function.
+ * @param {*} value - The value to check.
+ * @returns {boolean} Returns `true` if the given value is a function, else `false`.
+ */
+export function isFunction(value) {
+  return typeof value === 'function';
+}
+
+/**
+ * Iterate the given data.
+ * @param {*} data - The data to iterate.
+ * @param {Function} callback - The process function for each element.
+ * @returns {*} The original data.
+ */
+export function each(data, callback) {
+  if (data && isFunction(callback)) {
+    if (Array.isArray(data) || isNumber(data.length)/* array-like */) {
+      const { length } = data;
+      let i;
+
+      for (i = 0; i < length; i += 1) {
+        if (callback.call(data, data[i], i, data) === false) {
+          break;
+        }
+      }
+    } else if (isObject(data)) {
+      Object.keys(data).forEach((key) => {
+        callback.call(data, data[key], key, data);
+      });
+    }
+  }
+
+  return data;
+}
+
+/**
+ * Extend the given object.
+ * @param {*} obj - The object to be extended.
+ * @param {*} args - The rest objects which will be merged to the first object.
+ * @returns {Object} The extended object.
+ */
+export function extend(obj, ...args) {
+  if (isObject(obj) && args.length > 0) {
+    if (Object.assign) {
+      return Object.assign(obj, ...args);
+    }
+
+    args.forEach((arg) => {
+      if (isObject(arg)) {
+        Object.keys(arg).forEach((key) => {
+          obj[key] = arg[key];
+        });
+      }
+    });
+  }
+
+  return obj;
+}
+
+/**
+ * Takes a function and returns a new one that will always have a particular context.
+ * @param {Function} fn - The target function.
+ * @param {Object} context - The new context for the function.
+ * @returns {boolean} The new function.
+ */
+export function proxy(fn, context, ...args) {
+  return (...args2) => fn.apply(context, args.concat(args2));
+}
+
+const REGEXP_DECIMALS = /\.\d*(?:0|9){12}\d*$/i;
+
+/**
+ * Normalize decimal number.
+ * Check out {@link http://0.30000000000000004.com/ }
+ * @param {number} value - The value to normalize.
+ * @param {number} [times=100000000000] - The times for normalizing.
+ * @returns {number} Returns the normalized number.
+ */
+export function normalizeDecimalNumber(value, times = 100000000000) {
+  return REGEXP_DECIMALS.test(value) ? (Math.round(value * times) / times) : value;
+}
+
+const REGEXP_SUFFIX = /^(width|height|left|top|marginLeft|marginTop)$/;
+
+/**
+ * Apply styles to the given element.
+ * @param {Element} element - The target element.
+ * @param {Object} styles - The styles for applying.
+ */
+export function setStyle(element, styles) {
+  const { style } = element;
+
+  each(styles, (value, property) => {
+    if (REGEXP_SUFFIX.test(property) && isNumber(value)) {
+      value += 'px';
+    }
+
+    style[property] = value;
+  });
+}
+
+/**
+ * Check if the given element has a special class.
+ * @param {Element} element - The element to check.
+ * @param {string} value - The class to search.
+ * @returns {boolean} Returns `true` if the special class was found.
+ */
+export function hasClass(element, value) {
+  return element.classList ?
+    element.classList.contains(value) :
+    element.className.indexOf(value) > -1;
+}
+
+/**
+ * Add classes to the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be added.
+ */
+export function addClass(element, value) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    each(element, (elem) => {
+      addClass(elem, value);
+    });
+    return;
+  }
+
+  if (element.classList) {
+    element.classList.add(value);
+    return;
+  }
+
+  const className = element.className.trim();
+
+  if (!className) {
+    element.className = value;
+  } else if (className.indexOf(value) < 0) {
+    element.className = `${className} ${value}`;
+  }
+}
+
+/**
+ * Remove classes from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be removed.
+ */
+export function removeClass(element, value) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    each(element, (elem) => {
+      removeClass(elem, value);
+    });
+    return;
+  }
+
+  if (element.classList) {
+    element.classList.remove(value);
+    return;
+  }
+
+  if (element.className.indexOf(value) >= 0) {
+    element.className = element.className.replace(value, '');
+  }
+}
+
+/**
+ * Add or remove classes from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} value - The classes to be toggled.
+ * @param {boolean} added - Add only.
+ */
+export function toggleClass(element, value, added) {
+  if (!value) {
+    return;
+  }
+
+  if (isNumber(element.length)) {
+    each(element, (elem) => {
+      toggleClass(elem, value, added);
+    });
+    return;
+  }
+
+  // IE10-11 doesn't support the second parameter of `classList.toggle`
+  if (added) {
+    addClass(element, value);
+  } else {
+    removeClass(element, value);
+  }
+}
+
+const REGEXP_HYPHENATE = /([a-z\d])([A-Z])/g;
+
+/**
+ * Hyphenate the given value.
+ * @param {string} value - The value to hyphenate.
+ * @returns {string} The hyphenated value.
+ */
+export function hyphenate(value) {
+  return value.replace(REGEXP_HYPHENATE, '$1-$2').toLowerCase();
+}
+
+/**
+ * Get data from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to get.
+ * @returns {string} The data value.
+ */
+export function getData(element, name) {
+  if (isObject(element[name])) {
+    return element[name];
+  } else if (element.dataset) {
+    return element.dataset[name];
+  }
+
+  return element.getAttribute(`data-${hyphenate(name)}`);
+}
+
+/**
+ * Set data to the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to set.
+ * @param {string} data - The data value.
+ */
+export function setData(element, name, data) {
+  if (isObject(data)) {
+    element[name] = data;
+  } else if (element.dataset) {
+    element.dataset[name] = data;
+  } else {
+    element.setAttribute(`data-${hyphenate(name)}`, data);
+  }
+}
+
+/**
+ * Remove data from the given element.
+ * @param {Element} element - The target element.
+ * @param {string} name - The data key to remove.
+ */
+export function removeData(element, name) {
+  if (isObject(element[name])) {
+    try {
+      delete element[name];
+    } catch (e) {
+      element[name] = null;
+    }
+  } else if (element.dataset) {
+    // #128 Safari not allows to delete dataset property
+    try {
+      delete element.dataset[name];
+    } catch (e) {
+      element.dataset[name] = null;
+    }
+  } else {
+    element.removeAttribute(`data-${hyphenate(name)}`);
+  }
+}
+
+const REGEXP_SPACES = /\s+/;
+
+/**
+ * Remove event listener from the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Function} listener - The event listener.
+ * @param {Object} options - The event options.
+ */
+export function removeListener(element, type, listener, options = {}) {
+  if (!isFunction(listener)) {
+    return;
+  }
+
+  const types = type.trim().split(REGEXP_SPACES);
+
+  if (types.length > 1) {
+    each(types, (t) => {
+      removeListener(element, t, listener, options);
+    });
+    return;
+  }
+
+  if (element.removeEventListener) {
+    element.removeEventListener(type, listener, options);
+  } else if (element.detachEvent) {
+    element.detachEvent(`on${type}`, listener);
+  }
+}
+
+/**
+ * Add event listener to the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Function} listener - The event listener.
+ * @param {Object} options - The event options.
+ */
+export function addListener(element, type, listener, options = {}) {
+  if (!isFunction(listener)) {
+    return;
+  }
+
+  const types = type.trim().split(REGEXP_SPACES);
+
+  if (types.length > 1) {
+    each(types, (t) => {
+      addListener(element, t, listener, options);
+    });
+    return;
+  }
+
+  if (options.once) {
+    const originalListener = listener;
+
+    listener = (...args) => {
+      removeListener(element, type, listener, options);
+      return originalListener.apply(element, args);
+    };
+  }
+
+  if (element.addEventListener) {
+    element.addEventListener(type, listener, options);
+  } else if (element.attachEvent) {
+    element.attachEvent(`on${type}`, listener);
+  }
+}
+
+/**
+ * Dispatch event on the target element.
+ * @param {Element} element - The event target.
+ * @param {string} type - The event type(s).
+ * @param {Object} data - The additional event data.
+ * @returns {boolean} Indicate if the event is default prevented or not.
+ */
+export function dispatchEvent(element, type, data) {
+  if (element.dispatchEvent) {
+    let event;
+
+    // Event and CustomEvent on IE9-11 are global objects, not constructors
+    if (isFunction(Event) && isFunction(CustomEvent)) {
+      if (isUndefined(data)) {
+        event = new Event(type, {
+          bubbles: true,
+          cancelable: true,
+        });
+      } else {
+        event = new CustomEvent(type, {
+          detail: data,
+          bubbles: true,
+          cancelable: true,
+        });
+      }
+    } else if (isUndefined(data)) {
+      event = document.createEvent('Event');
+      event.initEvent(type, true, true);
+    } else {
+      event = document.createEvent('CustomEvent');
+      event.initCustomEvent(type, true, true, data);
+    }
+
+    // IE9+
+    return element.dispatchEvent(event);
+  } else if (element.fireEvent) {
+    // IE6-10 (native events only)
+    return element.fireEvent(`on${type}`);
+  }
+
+  return true;
+}
+
+/**
+ * Get the offset base on the document.
+ * @param {Element} element - The target element.
+ * @returns {Object} The offset data.
+ */
+export function getOffset(element) {
+  const doc = document.documentElement;
+  const box = element.getBoundingClientRect();
+
+  return {
+    left: box.left + (
+      (window.scrollX || (doc && doc.scrollLeft) || 0) - ((doc && doc.clientLeft) || 0)
+    ),
+    top: box.top + (
+      (window.scrollY || (doc && doc.scrollTop) || 0) - ((doc && doc.clientTop) || 0)
+    ),
+  };
+}
+
+/**
+ * Empty an element.
+ * @param {Element} element - The element to empty.
+ */
+export function empty(element) {
+  while (element.firstChild) {
+    element.removeChild(element.firstChild);
+  }
+}
+
+const { location } = WINDOW;
+const REGEXP_ORIGINS = /^(https?:)\/\/([^:/?#]+):?(\d*)/i;
+
+/**
+ * Check if the given URL is a cross origin URL.
+ * @param {string} url - The target URL.
+ * @returns {boolean} Returns `true` if the given URL is a cross origin URL, else `false`.
+ */
+export function isCrossOriginURL(url) {
+  const parts = url.match(REGEXP_ORIGINS);
+
+  return parts && (
+    parts[1] !== location.protocol ||
+    parts[2] !== location.hostname ||
+    parts[3] !== location.port
+  );
+}
+
+/**
+ * Add timestamp to the given URL.
+ * @param {string} url - The target URL.
+ * @returns {string} The result URL.
+ */
+export function addTimestamp(url) {
+  const timestamp = `timestamp=${(new Date()).getTime()}`;
+
+  return (url + (url.indexOf('?') === -1 ? '?' : '&') + timestamp);
+}
+
+/**
+ * Get transforms base on the given object.
+ * @param {Object} obj - The target object.
+ * @returns {string} A string contains transform values.
+ */
+export function getTransforms({
+  rotate,
+  scaleX,
+  scaleY,
+  translateX,
+  translateY,
+}) {
+  const values = [];
+
+  if (isNumber(translateX) && translateX !== 0) {
+    values.push(`translateX(${translateX}px)`);
+  }
+
+  if (isNumber(translateY) && translateY !== 0) {
+    values.push(`translateY(${translateY}px)`);
+  }
+
+  // Rotate should come first before scale to match orientation transform
+  if (isNumber(rotate) && rotate !== 0) {
+    values.push(`rotate(${rotate}deg)`);
+  }
+
+  if (isNumber(scaleX) && scaleX !== 1) {
+    values.push(`scaleX(${scaleX})`);
+  }
+
+  if (isNumber(scaleY) && scaleY !== 1) {
+    values.push(`scaleY(${scaleY})`);
+  }
+
+  const transform = values.length ? values.join(' ') : 'none';
+
+  return {
+    WebkitTransform: transform,
+    msTransform: transform,
+    transform,
+  };
+}
+
+const { navigator } = WINDOW;
+const IS_SAFARI_OR_UIWEBVIEW = navigator && /(Macintosh|iPhone|iPod|iPad).*AppleWebKit/i.test(navigator.userAgent);
+
+/**
+ * Get an image's natural sizes.
+ * @param {string} image - The target image.
+ * @param {Function} callback - The callback function.
+ */
+export function getImageNaturalSizes(image, callback) {
+  // Modern browsers (except Safari)
+  if (image.naturalWidth && !IS_SAFARI_OR_UIWEBVIEW) {
+    callback(image.naturalWidth, image.naturalHeight);
+    return;
+  }
+
+  const newImage = document.createElement('img');
+  const body = document.body || document.documentElement;
+
+  newImage.onload = () => {
+    callback(newImage.width, newImage.height);
+    body.removeChild(newImage);
+  };
+
+  newImage.src = image.src;
+  newImage.style.cssText = (
+    'left:0;' +
+    'max-height:none!important;' +
+    'max-width:none!important;' +
+    'min-height:0!important;' +
+    'min-width:0!important;' +
+    'opacity:0;' +
+    'position:absolute;' +
+    'top:0;' +
+    'z-index:-1;'
+  );
+  body.appendChild(newImage);
+}
+
+/**
+ * Get the max ratio of a group of pointers.
+ * @param {string} pointers - The target pointers.
+ * @returns {number} The result ratio.
+ */
+export function getMaxZoomRatio(pointers) {
+  const pointers2 = extend({}, pointers);
+  const ratios = [];
+
+  each(pointers, (pointer, pointerId) => {
+    delete pointers2[pointerId];
+
+    each(pointers2, (pointer2) => {
+      const x1 = Math.abs(pointer.startX - pointer2.startX);
+      const y1 = Math.abs(pointer.startY - pointer2.startY);
+      const x2 = Math.abs(pointer.endX - pointer2.endX);
+      const y2 = Math.abs(pointer.endY - pointer2.endY);
+      const z1 = Math.sqrt((x1 * x1) + (y1 * y1));
+      const z2 = Math.sqrt((x2 * x2) + (y2 * y2));
+      const ratio = (z2 - z1) / z1;
+
+      ratios.push(ratio);
+    });
+  });
+
+  ratios.sort((a, b) => Math.abs(a) < Math.abs(b));
+
+  return ratios[0];
+}
+
+/**
+ * Get a pointer from an event object.
+ * @param {Object} event - The target event object.
+ * @param {boolean} endOnly - Indicates if only returns the end point coordinate or not.
+ * @returns {Object} The result pointer contains start and/or end point coordinates.
+ */
+export function getPointer({ pageX, pageY }, endOnly) {
+  const end = {
+    endX: pageX,
+    endY: pageY,
+  };
+
+  if (endOnly) {
+    return end;
+  }
+
+  return extend({
+    startX: pageX,
+    startY: pageY,
+  }, end);
+}
+
+/**
+ * Get the center point coordinate of a group of pointers.
+ * @param {Object} pointers - The target pointers.
+ * @returns {Object} The center point coordinate.
+ */
+export function getPointersCenter(pointers) {
+  let pageX = 0;
+  let pageY = 0;
+  let count = 0;
+
+  each(pointers, ({ startX, startY }) => {
+    pageX += startX;
+    pageY += startY;
+    count += 1;
+  });
+
+  pageX /= count;
+  pageY /= count;
+
+  return {
+    pageX,
+    pageY,
+  };
+}
+
+/**
+ * Check if the given value is a finite number.
+ */
+export const isFinite = Number.isFinite || WINDOW.isFinite;
+
+/**
+ * Get the max sizes in a rectangle under the given aspect ratio.
+ * @param {Object} data - The original sizes.
+ * @returns {Object} The result sizes.
+ */
+export function getContainSizes({
+  aspectRatio,
+  height,
+  width,
+}) {
+  const isValidNumber = value => isFinite(value) && value > 0;
+
+  if (isValidNumber(width) && isValidNumber(height)) {
+    if (height * aspectRatio > width) {
+      height = width / aspectRatio;
+    } else {
+      width = height * aspectRatio;
+    }
+  } else if (isValidNumber(width)) {
+    height = width / aspectRatio;
+  } else if (isValidNumber(height)) {
+    width = height * aspectRatio;
+  }
+
+  return {
+    width,
+    height,
+  };
+}
+
+/**
+ * Get the new sizes of a rectangle after rotated.
+ * @param {Object} data - The original sizes.
+ * @returns {Object} The result sizes.
+ */
+export function getRotatedSizes({ width, height, degree }) {
+  degree = Math.abs(degree) % 180;
+
+  if (degree === 90) {
+    return {
+      width: height,
+      height: width,
+    };
+  }
+
+  const arc = ((degree % 90) * Math.PI) / 180;
+  const sinArc = Math.sin(arc);
+  const cosArc = Math.cos(arc);
+  const newWidth = (width * cosArc) + (height * sinArc);
+  const newHeight = (width * sinArc) + (height * cosArc);
+
+  return degree > 90 ? {
+    width: newHeight,
+    height: newWidth,
+  } : {
+    width: newWidth,
+    height: newHeight,
+  };
+}
+
+/**
+ * Get a canvas which drew the given image.
+ * @param {HTMLImageElement} image - The image for drawing.
+ * @param {Object} imageData - The image data.
+ * @param {Object} canvasData - The canvas data.
+ * @param {Object} options - The options.
+ * @returns {HTMLCanvasElement} The result canvas.
+ */
+export function getSourceCanvas(
+  image,
+  {
+    naturalWidth: imageNaturalWidth,
+    naturalHeight: imageNaturalHeight,
+    rotate = 0,
+    scaleX = 1,
+    scaleY = 1,
+  },
+  {
+    aspectRatio,
+    naturalWidth,
+    naturalHeight,
+  },
+  {
+    fillColor = 'transparent',
+    imageSmoothingEnabled = true,
+    imageSmoothingQuality = 'low',
+    maxWidth = Infinity,
+    maxHeight = Infinity,
+    minWidth = 0,
+    minHeight = 0,
+  },
+) {
+  const canvas = document.createElement('canvas');
+  const context = canvas.getContext('2d');
+  const maxSizes = getContainSizes({
+    aspectRatio,
+    width: maxWidth,
+    height: maxHeight,
+  });
+  const minSizes = getContainSizes({
+    aspectRatio,
+    width: minWidth,
+    height: minHeight,
+  });
+  const width = Math.min(maxSizes.width, Math.max(minSizes.width, naturalWidth));
+  const height = Math.min(maxSizes.height, Math.max(minSizes.height, naturalHeight));
+  const params = [
+    -imageNaturalWidth / 2,
+    -imageNaturalHeight / 2,
+    imageNaturalWidth,
+    imageNaturalHeight,
+  ];
+
+  canvas.width = normalizeDecimalNumber(width);
+  canvas.height = normalizeDecimalNumber(height);
+  context.fillStyle = fillColor;
+  context.fillRect(0, 0, width, height);
+  context.save();
+  context.translate(width / 2, height / 2);
+  context.rotate((rotate * Math.PI) / 180);
+  context.scale(scaleX, scaleY);
+  context.imageSmoothingEnabled = imageSmoothingEnabled;
+  context.imageSmoothingQuality = imageSmoothingQuality;
+  context.drawImage(image, ...params.map(param => Math.floor(normalizeDecimalNumber(param))));
+  context.restore();
+  return canvas;
+}
+
+const { fromCharCode } = String;
+
+/**
+ * Get string from char code in data view.
+ * @param {DataView} dataView - The data view for read.
+ * @param {number} start - The start index.
+ * @param {number} length - The read length.
+ * @returns {string} The read result.
+ */
+export function getStringFromCharCode(dataView, start, length) {
+  let str = '';
+  let i;
+
+  length += start;
+
+  for (i = start; i < length; i += 1) {
+    str += fromCharCode(dataView.getUint8(i));
+  }
+
+  return str;
+}
+
+const REGEXP_DATA_URL_HEAD = /^data:.*,/;
+
+/**
+ * Transform Data URL to array buffer.
+ * @param {string} dataURL - The Data URL to transform.
+ * @returns {ArrayBuffer} The result array buffer.
+ */
+export function dataURLToArrayBuffer(dataURL) {
+  const base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, '');
+  const binary = atob(base64);
+  const arrayBuffer = new ArrayBuffer(binary.length);
+  const uint8 = new Uint8Array(arrayBuffer);
+
+  each(uint8, (value, i) => {
+    uint8[i] = binary.charCodeAt(i);
+  });
+
+  return arrayBuffer;
+}
+
+/**
+ * Transform array buffer to Data URL.
+ * @param {ArrayBuffer} arrayBuffer - The array buffer to transform.
+ * @param {string} mimeType - The mime type of the Data URL.
+ * @returns {string} The result Data URL.
+ */
+export function arrayBufferToDataURL(arrayBuffer, mimeType) {
+  const uint8 = new Uint8Array(arrayBuffer);
+  let data = '';
+
+  // TypedArray.prototype.forEach is not supported in some browsers.
+  each(uint8, (value) => {
+    data += fromCharCode(value);
+  });
+
+  return `data:${mimeType};base64,${btoa(data)}`;
+}
+
+/**
+ * Get orientation value from given array buffer.
+ * @param {ArrayBuffer} arrayBuffer - The array buffer to read.
+ * @returns {number} The read orientation value.
+ */
+export function getOrientation(arrayBuffer) {
+  const dataView = new DataView(arrayBuffer);
+  let orientation;
+  let littleEndian;
+  let app1Start;
+  let ifdStart;
+
+  // Only handle JPEG image (start by 0xFFD8)
+  if (dataView.getUint8(0) === 0xFF && dataView.getUint8(1) === 0xD8) {
+    const length = dataView.byteLength;
+    let offset = 2;
+
+    while (offset < length) {
+      if (dataView.getUint8(offset) === 0xFF && dataView.getUint8(offset + 1) === 0xE1) {
+        app1Start = offset;
+        break;
+      }
+
+      offset += 1;
+    }
+  }
+
+  if (app1Start) {
+    const exifIDCode = app1Start + 4;
+    const tiffOffset = app1Start + 10;
+
+    if (getStringFromCharCode(dataView, exifIDCode, 4) === 'Exif') {
+      const endianness = dataView.getUint16(tiffOffset);
+
+      littleEndian = endianness === 0x4949;
+
+      if (littleEndian || endianness === 0x4D4D /* bigEndian */) {
+        if (dataView.getUint16(tiffOffset + 2, littleEndian) === 0x002A) {
+          const firstIFDOffset = dataView.getUint32(tiffOffset + 4, littleEndian);
+
+          if (firstIFDOffset >= 0x00000008) {
+            ifdStart = tiffOffset + firstIFDOffset;
+          }
+        }
+      }
+    }
+  }
+
+  if (ifdStart) {
+    const length = dataView.getUint16(ifdStart, littleEndian);
+    let offset;
+    let i;
+
+    for (i = 0; i < length; i += 1) {
+      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
+        dataView.setUint16(offset, 1, littleEndian);
+        break;
+      }
+    }
+  }
+
+  return orientation;
+}
+
+/**
+ * Parse Exif Orientation value.
+ * @param {number} orientation - The orientation to parse.
+ * @returns {Object} The parsed result.
+ */
+export function parseOrientation(orientation) {
+  let rotate = 0;
+  let scaleX = 1;
+  let scaleY = 1;
+
+  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 and rotate right 90°
+    case 5:
+      rotate = 90;
+      scaleY = -1;
+      break;
+
+    // Rotate right 90°
+    case 6:
+      rotate = 90;
+      break;
+
+    // Flip horizontal and rotate right 90°
+    case 7:
+      rotate = 90;
+      scaleX = -1;
+      break;
+
+    // Rotate left 90°
+    case 8:
+      rotate = -90;
+      break;
+
+    default:
+  }
+
+  return {
+    rotate,
+    scaleX,
+    scaleY,
+  };
+}
diff --git a/screenshot.html b/screenshot.html
index 22cf1ba..c926074 100644
--- a/screenshot.html
+++ b/screenshot.html
@@ -11,8 +11,8 @@
 			background-color: #52d3aa;
 		}
 		img{
-			height: 90%;
-			width:90%;
+			max-height: 90%;
+			max-width:90%;
 			display: block;
     		margin: 0 auto;
 		}