$('document').ready(function(){

window.addEventListener("paste", pasteHandler);

function pasteHandler(e){
    if(e.clipboardData && $("#ctl00_PlaceHolderMain_PageContent_RichHtmlField_hiddenDisplay")[0]) {
        var items = e.clipboardData.items;
        if (items){
            for (var i = 0; i < items.length; i++) {
                if (items[i].type.indexOf("image") !== -1) {
                    var blob = items[i].getAsFile();
                    UploadMe(blob);
                    }
                }
            }

        }

    }

}); //end of doc.ready

function UploadMe(readFile) {
    var reader = new FileReader();
    reader.readAsArrayBuffer(readFile); //array buffer
    reader.onprogress = updateProgress;
    reader.onload = loaded;
    reader.onerror = errorHandler;
}

function loaded(evt) {
    var fileString = evt.target.result;
    var X = _arrayBufferToBase64(fileString); // this is the mothod to convert Buffer array to Binary
        //var fileInput = document.getElementById('attafh');
        //var fileDisplayArea = document.getElementById('fileDisplayArea');
        var file = guid() + ".PNG" //fileInput.values;
        var filePath = "From Clipboard" //$('#attafh').val(); // "c:\\test.pdf";
        var pageID = _spPageContextInfo.pageItemId;
        //var file = filePath.match(/\\([^\\]+)$/)[1];

        var soapEnv =
            "<soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'> \
                <soap:Body>\
                    <CopyIntoItems xmlns='http://schemas.microsoft.com/sharepoint/soap/'>\
                        <SourceUrl>" + filePath + "</SourceUrl>\
                            <DestinationUrls>\
                                <string>https://domain.com/wikis/ITS/PastedImages/" + file + "</string>\
                            </DestinationUrls>\
                            <Fields>\
                                <FieldInformation Type='Text' DisplayName='Title' InternalName='Title' Value='Pasted Image'  />\
                                <FieldInformation Type='Text' DisplayName='PageID' InternalName='PageID' Value='" + pageID + "'  />\
                            </Fields>\
                        <Stream>" + X + "</Stream>\
                    </CopyIntoItems>\
                </soap:Body>\
            </soap:Envelope>";

        $.ajax({
            url: "https://domain.com/wikis/ITS/_vti_bin/copy.asmx",
            beforeSend: function (xhr) { xhr.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/sharepoint/soap/CopyIntoItems"); },
            type: "POST",
            dataType: "xml",
            data: soapEnv,
            complete: function(){
                insertHtmlAtCursor("<img src='https://domain.com/wikis/ITS/PastedImages/" + file + "'/>");
            },
            contentType: "text/xml; charset=\"utf-8\""
        });

    }
    //SP.SOD.executeOrDelayUntilScriptLoaded(initialize, 'SP.js');
    //SP.SOD.executeOrDelayUntilScriptLoaded(test, 'SP.js');
    //SP.SOD.executeFunc('sp.js', 'SP.ClientContext', initialize);
    //SP.SOD.executeFunc('sp.js', 'SP.ClientContext', test);


    function errorHandler(evt) {
        if (evt.target.error.name == "NotReadableError") {
            // The file could not be read.
        }
    }

    function _arrayBufferToBase64(buffer) {
        var binary = ''
        var bytes = new Uint8Array(buffer)
        var len = bytes.byteLength;
        for (var i = 0; i < len; i++) {
            binary += String.fromCharCode(bytes[i])
        }
        return window.btoa(binary);
    }

    function updateProgress(evt) {
    }

    function guid() {
      function s4() {
        return Math.floor((1 + Math.random()) * 0x10000)
                   .toString(16)
                   .substring(1);
      }
      return s4() + s4() + s4();
    }

    function insertHtmlAtCursor(html) {
        var range, node;
        if (window.getSelection && window.getSelection().getRangeAt) {
            range = window.getSelection().getRangeAt(0);
            node = range.createContextualFragment(html);
            range.insertNode(node);
        } else if (document.selection && document.selection.createRange) {
            document.selection.createRange().pasteHTML(html);
    }
}