anurag jain's blog for Salesforce.: May 2015

Hi Guys,

In this post i am going to show how we can crop an image and upload it in Documents Object of Salesforce.

I am taking a simple example and following the below mentioned steps:-

Create a VF page which has a upload image link.
on click of upload link i am opening a pop up of another VF page which is used to select image file from local system.
now after selecting file click on upload button.
after clicking on upload button magic is started now you can zoom-in, zoom-out or drag image and can easily select part of image you needed to upload in salesforce document.
Finally on click of save button image is inserted in document object and pop up window is closed.

Here the code:-

	// Controller Class to Save Image to Document of Salesforce

	public class cls_ImageCropper{


	/********Profile Pic*************/
	Public Transient blob propFileBody{get;set;}
	Public Transient string propFileName{get;set;}
	Public Transient string propContentType{get;set;}
	Public Integer fsize{get;set;}
	public boolean doneuploading{get; set;}
	public boolean doneuploadingCroping{get; set;}
	public boolean uploadCroping{get; set;}
	Public Transient string upldocUrl{get;set;}
	Public Transient String inputdataUrl{get;set;}
	Public String DocID{get;set;}

	public cls_ImageCropper()
	{
	try
	{
	upldocUrl='';
	inputdataUrl='';
	uploadCroping=false;
	doneuploading=false;
	doneuploadingCroping=false;
	}
	catch(Exception ex)
	{
	ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR,ex.getStackTraceString()+' Message: SaveProfile() '+ex.getMessage());
	ApexPages.addMessage(msg);
	}
	}

	public Pagereference uploadPicture()
	{
	try
	{
	Transient User UserContactId;
	if(!uploadCroping)
	return EditProfilePic();
	else
	return uploadCrop();
	}
	catch(Exception ex)
	{
	ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR,ex.getStackTraceString()+' Message: SaveProfile() '+ex.getMessage());
	ApexPages.addMessage(msg);
	}
	return null;
	}

	public Pagereference EditProfilePic()
	{
	try
	{
	system.debug('@@@@# propFileBody'+propFileBody+''+propFileName+''+propContentType+'fsize'+fsize+'propFileName'+propFileName);

	// checking file size should be less then 5 MB
	if(fsize > 5242880)
	{
	ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR, 'Unable to upload '+propFileName+' because it exceeds the maximum file size (5MB).');
	ApexPages.addMessage(msg);
	}
	else if((propContentType != 'image/png') && (propContentType != 'image/x-png') && (propContentType != 'image/pjpeg') && (propContentType != 'image/jpeg') && (propContentType != 'image/gif') && (propContentType != 'image/bmp')&& (propContentType != 'image/tiff'))
	{
	ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR, 'Error: File Type Not Correct.');
	ApexPages.addMessage(msg);
	}
	else
	{
	String strtemp=EncodingUtil.base64Encode(propFileBody);
	if(!String.isblank(strtemp))
	upldocUrl='data:'+propContentType+';base64,'+strtemp; // set the image url to display image on the page
	else
	upldocUrl='';
	doneuploading=true;
	}
	}
	catch(Exception ex)
	{
	ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR,ex.getStackTraceString()+' Message: '+ex.getMessage());
	ApexPages.addMessage(msg);
	}
	return null;
	}

	public Pagereference uploadCrop()
	{
	try
	{
	doneuploadingCroping=false;
	if(!string.isblank(inputdataUrl))
	{
	List<String> datalist = inputdataUrl.split(',');
	if(datalist.size()>0)
	{
	propContentType=datalist[0].split(';')[0];
	propContentType=propContentType.removeStart('data:');
	inputdataUrl=datalist[1].trim();
	}

	propFileBody=EncodingUtil.base64Decode(inputdataUrl);

	Document doc = new Document();
	doc.Body = propFileBody;
	doc.Name = 'ABC';
	doc.IsPublic = true;
	doc.ContentType = propContentType;
	doc.Type = propContentType.substring((propContentType.indexOf('/')+1),propContentType.length());
	doc.FolderId = UserInfo.getUserId();
	System.debug('doc------'+doc);
	insert doc;
	DocID = doc.Id;
	doneuploadingCroping=true;
	}
	}
	catch(Exception ex)
	{
	ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR,ex.getStackTraceString()+' Message: '+ex.getMessage());
	ApexPages.addMessage(msg);
	}
	return null;
	}
	}

view raw cls_ImageCropper hosted with ❤ by GitHub

	<apex:page controller="cls_ImageCropper" id="pg" showHeader="false" >
	<head>
	<meta http-equiv='cache-control' content='no-cache'/>
	<meta http-equiv='expires' content='0'/>
	<meta http-equiv='pragma' content='no-cache'/>
	</head>

	<body>
	<style>
	.btn_active{
	height: 25px;
	padding: 0px 15px !important;
	border: 1px solid #CCC !important;
	color: #015BA7;
	font-weight: bold !important;
	font-family: arial !important;
	font-size: 12px;
	position: relative !important;
	left: 0px !important;
	cursor: pointer !important;
	border-radius: 2px !important;
	line-height: 26px !important;
	text-decoration: none !important;
	display: inline-block;
	}
	</style>
	<!--<apex:inputHidden id="DocId" value="{!DocID}"/>-->
	<apex:outputPanel rendered="{!NOT(doneuploading)}">
	<apex:form id="frm1">
	<apex:actionFunction name="EditProfilePicture" id="editpic" action="{!uploadPicture}">
	<apex:param value="false" name="uploadDoc" assignTo="{!uploadCroping}"/>
	</apex:actionFunction>
	<!--Start ChangeProfile_picture-->
	<div class="ChangeProfile_picture" style="display: block; margin: 0 auto;width: 250px;">
	<center>
	<div style="font-size: x-large;">Upload Picture </div>
	<br/>
	<div id="ErrorDiv"> </div>
	</center>
	<!--Start formbox-->
	<div class="formbox" style="width:100% !important; margin-left:40%important">
	<form>
	<table class="table" border="0" cellpadding="5" cellspacing="0">
	<tr>
	<tr>
	<td>
	<center>
	<label>
	<apex:inputFile style="padding: 4.5px 10px;width: 95.5%;" id="fileid" fileSize="{!fsize}" accept="image/*" size="40" title="Browse" value="{!propFileBody}" fileName="{!propFileName}" contentType="{!propContentType}" ></apex:inputFile>
	</label>
	<div class="paginationstyle" style="display:inline"><a href="javascript: void(0);" class="btn_active" onclick="validateProfilePicture(); return false;" title="Submit">Submit</a>
	</div>
	</center>
	</td>
	</tr>
	</tr>
	</table>
	</form>
	</div>
	<!--End formbox-->
	</div>
	</apex:form>
	</apex:outputPanel>
	<apex:outputPanel rendered="{!doneuploading}">
	<style>
	.imageBox
	{
	position: relative;
	height: 400px;
	width: 400px;
	border:1px solid #aaa;
	background: #fff;
	overflow: hidden;
	background-repeat: no-repeat;
	cursor:move;
	}
	.imageBox .thumbBox
	{
	position: absolute;
	top: 40%;
	left: 60%;
	width: 160px;
	height: 175px;
	margin-top: -50px;
	margin-left: -125px;
	box-sizing: border-box;
	border: 1px solid rgb(102, 102, 102);
	box-shadow: 0 0 0 1000px rgba(0, 0, 0, 0.5);
	background: none repeat scroll 0% 0% transparent;
	}
	.imageBox .spinner
	{
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
	text-align: center;
	line-height: 400px;
	background: rgba(0,0,0,0.7);
	}
	.container
	{
	position: relative;
	top: 10%;
	margin: 0 auto;
	width: 400px;
	}
	.action
	{
	width: 400px;
	height: 30px;
	margin: 10px 0;
	}
	.cropped>img
	{
	margin-right: 10px;
	}
	</style>
	<apex:form id="frm2">
	<apex:actionFunction name="UploadCropPicture" id="croppic" action="{!uploadPicture}" reRender="outputcrop" oncomplete="oncompCropping();">
	<apex:param value="" name="dataurl" assignTo="{!inputdataUrl}"/>
	<apex:param value="true" name="uploadcroping" assignTo="{!uploadCroping}"/>
	</apex:actionFunction>
	<!---------------------------->
	<div class="container">
	<div class="imageBox">
	<div class="thumbBox"></div>
	<div class="spinner" style="display: none">Loading...</div>
	</div>
	<div class="action">
	<a href="javascript:void(0);" id="btnCrop" class="btn_active" style="float: right;">Crop</a>
	<a href="javascript:void(0);" id="btnZoomIn" class="btn_active" style="float: right;">Zoom IN</a>
	<a href="javascript:void(0);" id="btnZoomOut" class="btn_active" style="float: right;">Zoom Out</a>
	</div>
	<div class="cropped">
	</div>
	</div>
	</apex:form>
	</apex:outputPanel>
	</body>
	<apex:outputPanel id="outputcrop">
	<script type="text/javascript">
	'use strict';
	var cropbox = function(options){
	var el = document.querySelector(options.imageBox),
	obj =
	{
	state : {},
	ratio : 1,
	options : options,
	imageBox : el,
	thumbBox : el.querySelector(options.thumbBox),
	spinner : el.querySelector(options.spinner),
	image : new Image(),
	getDataURL: function ()
	{
	var width = this.thumbBox.clientWidth,
	height = this.thumbBox.clientHeight,
	canvas = document.createElement("canvas"),
	dim = el.style.backgroundPosition.split(' '),
	size = el.style.backgroundSize.split(' '),
	dx = parseInt(dim[0]) - el.clientWidth/2 + width/2,
	dy = parseInt(dim[1]) - el.clientHeight/2 + height/2,
	dw = parseInt(size[0]),
	dh = parseInt(size[1]),
	sh = parseInt(this.image.height),
	sw = parseInt(this.image.width);

	canvas.width = width;
	canvas.height = height;
	var context = canvas.getContext("2d");
	context.drawImage(this.image, 0, 0, sw, sh, dx, dy, dw, dh);
	var imageData = canvas.toDataURL('image/png');
	return imageData;
	},
	getBlob: function()
	{
	var imageData = this.getDataURL();
	var b64 = imageData.replace('data:image/png;base64,','');
	var binary = atob(b64);
	var array = [];
	for (var i = 0; i < binary.length; i++) {
	array.push(binary.charCodeAt(i));
	}
	return new Blob([new Uint8Array(array)], {type: 'image/png'});
	},
	zoomIn: function ()
	{
	this.ratio*=1.1;
	setBackground();
	},
	zoomOut: function ()
	{
	this.ratio*=0.9;
	setBackground();
	}
	},
	attachEvent = function(node, event, cb)
	{
	if (node.attachEvent)
	node.attachEvent('on'+event, cb);
	else if (node.addEventListener)
	node.addEventListener(event, cb);
	},
	detachEvent = function(node, event, cb)
	{
	if(node.detachEvent) {
	node.detachEvent('on'+event, cb);
	}
	else if(node.removeEventListener) {
	node.removeEventListener(event, render);
	}
	},
	stopEvent = function (e) {
	if(window.event) e.cancelBubble = true;
	else e.stopImmediatePropagation();
	},
	setBackground = function()
	{
	var elemArray = document.getElementsByClassName("imageBox")[0].style.backgroundPosition;
	if(elemArray.length == 0)
	{
	var w = parseInt(obj.image.width)*obj.ratio;
	var h = parseInt(obj.image.height)*obj.ratio;
	var pw = (el.clientWidth - w) / 2;
	var ph = (el.clientHeight - h) / 2;
	el.setAttribute('style',
	'background-image: url(' + obj.image.src + '); ' +
	'background-size: ' + w +'px ' + h + 'px; ' +
	'background-position: ' + pw + 'px ' + ph + 'px; ' +
	'background-repeat: no-repeat');
	}
	if(elemArray.length>0)
	{
	var w = parseInt(obj.image.width)*obj.ratio;
	var h = parseInt(obj.image.height)*obj.ratio;
	var pw = (el.clientWidth - w) / 2;
	var ph = (el.clientHeight - h) / 2;

	el.setAttribute('style',
	'background-image: url(' + obj.image.src + '); ' +
	'background-size: ' + w +'px ' + h + 'px; ' +
	'background-position: '+elemArray+'; ' +
	'background-repeat: no-repeat');
	}
	},
	imgMouseDown = function(e)
	{
	stopEvent(e);
	obj.state.dragable = true;
	obj.state.mouseX = e.clientX;
	obj.state.mouseY = e.clientY;
	},
	imgMouseMove = function(e)
	{
	stopEvent(e);
	if (obj.state.dragable)
	{
	var x = e.clientX - obj.state.mouseX;
	var y = e.clientY - obj.state.mouseY;

	var bg = el.style.backgroundPosition.split(' ');

	var bgX = x + parseInt(bg[0]);
	var bgY = y + parseInt(bg[1]);

	el.style.backgroundPosition = bgX +'px ' + bgY + 'px';

	obj.state.mouseX = e.clientX;
	obj.state.mouseY = e.clientY;
	}
	},
	imgMouseUp = function(e)
	{
	stopEvent(e);
	obj.state.dragable = false;
	},
	zoomImage = function(e)
	{
	var evt=window.event \|\| e;
	var delta=evt.detail? evt.detail*(-120) : evt.wheelDelta;
	delta > -120 ? obj.ratio=1.1 : obj.ratio=0.9;
	setBackground();
	}

	obj.spinner.style.display = 'block';
	obj.image.onload = function() {
	obj.spinner.style.display = 'none';
	setBackground();

	attachEvent(el, 'mousedown', imgMouseDown);
	attachEvent(el, 'mousemove', imgMouseMove);
	attachEvent(document.body, 'mouseup', imgMouseUp);
	var mousewheel = (/Firefox/i.test(navigator.userAgent))? 'DOMMouseScroll' : 'mousewheel';
	attachEvent(el, mousewheel, zoomImage);
	};
	obj.image.src = options.imgSrc;
	attachEvent(el, 'DOMNodeRemoved', function(){detachEvent(document.body, 'DOMNodeRemoved', imgMouseUp)});

	return obj;
	};
	</script>
	<script type="text/javascript">
	var imageData;

	function validateProfilePicture(){
	var inpt_file = document.getElementById('pg:frm1:fileid');
	if(inpt_file.value == '' \|\| inpt_file.fileName == '' \|\| inpt_file.contentType == ''){
	document.getElementById('ErrorDiv').innerHTML = '<b>Error:</b> Please specify a file to upload, or use the "Browse" button to locate it in your local file system.';
	}
	else{
	document.getElementById('ErrorDiv').innerHTML = '';
	window.resizeTo(550, 550);
	EditProfilePicture(false);
	}
	}

	function loadcropper() {
	var options =
	{
	imageBox: '.imageBox',
	thumbBox: '.thumbBox',
	spinner: '.spinner',
	imgSrc: '{!upldocUrl}'
	}
	var cropper = new cropbox(options);
	document.querySelector('#btnCrop').addEventListener('click', function(){
	imageData = cropper.getDataURL();

	var r = window.confirm("Are you sure you want to change the profile picture?");
	if (r == true) {
	UploadCropPicture(imageData,true);
	} else {}
	});
	document.querySelector('#btnZoomIn').addEventListener('click', function(){
	cropper.zoomIn();
	});

	document.querySelector('#btnZoomOut').addEventListener('click', function(){
	cropper.zoomOut();
	});
	}

	function onclickData()
	{
	imageData = $('.image-editor').cropit('export');
	}
	function loadImagesection(){
	var doneuploading = {!doneuploading};
	if(doneuploading)
	{
	loadcropper();
	}
	}

	function oncompCropping()
	{
	var doneuploadingtemp = {!doneuploadingCroping};
	if(doneuploadingtemp)
	{
	var DocId = "{!DocID}";
	window.opener.updateURL(DocId);
	}
	}
	loadImagesection();
	</script>
	</apex:outputPanel>
	</apex:page>

view raw ImageCropper hosted with ❤ by GitHub

	<apex:page>
	<img id="imgval" scr="" style="height: 160px; width:200px;" alt="Please click On Upload Picture"/>
	<br/>
	<a onclick="ChangeProfile_picture(); return false;" class="ShowHide_FilePath" title="Change Profile Picture" href="javascript: void(0);" style="margin-left:17px" >
	Upload Picture
	</a>

	<script>
	var w;
	function ChangeProfile_picture()
	{
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	w = window.open('/apex/ImageCropper','ProfilePicture','channelmode=0,directories=0,fullscreen=0,height=190,width=453,left='+(windowWidth/2-453/2)+',top='+(windowHeight/2-190/2)+',location=0,menubar=0,resizable=0,scrollbars=0,status=0,titlebar=0,toolbar=0');
	}

	function updateURL(DocId)
	{
	var imgTag = document.getElementById('imgval');
	imgTag.src = "/servlet/servlet.FileDownload?file="+DocId;
	w.close();
	}
	</script>
	</apex:page>