#StackBounty: #javascript #jquery #ecmascript-6 #html5 User upload & Drag image and update text

Bounty: 50

I am allowing user to upload images & drag uploaded image once user click on mask images, also gave an option to Edit the text….

I am fetching mask images and text from json file….

I am uploading each mask images in single canvas & using absolute positing….

But now its getting very difficult to do any code changes because the code structure looks very bad, i have no idea how to improve the look and feel of code structure , need help…..

enter image description here

JSfiddle : https://jsfiddle.net/kidsdial1/rhowf7dn/

pen : https://codepen.io/kidsdial/pen/rbeRZK

<

div class=”snippet” data-lang=”js” data-hide=”false” data-console=”true” data-babel=”false”>

function closePopUp(el) {
    el.style.display = 'none';
    openID = null
}

function openPopUp(el) {
    ///console.log(" open is called ",id)
    if (openID != null) {
        closePopUp(openID)
    }
    el.style.display = 'block';
    openID = el;
}


let openID = null;


var target;
var imageUrl = "https://i.imgur.com/RzEm1WK.png";

let jsonData = {  
  "layers" : [
    {
      "x" : 0,
      "height" : 600,
      "layers" : [        
        {
          "x" : 20,
          "height" : 788,
          "src" : "ax0HVTs.png",
          "y" : 70,
          "width" : 650,
          "type" : "image",
          "name" : "shape_1"
        },
        {
          "x" : 40,
          "height" : 140,
          "src" : "iEA642D.jpg",
          "y" : 360,
          "width" : 430,
          "type" : "image",
          "name" : "shape_2"
        },
        
        {
          "font" : "ArchivoNarrow-Bold",
          "x" : 19,
          "y" : 17,
          "width" : 211,
          "src" : "611aa93612da8fde1b17d87368355d1f_Font83.otf",
          "type" : "text",
          "text" : "VALENTINES DAY ",
          "size" : 27,
          "height" : 22,
          "name" : "edit_sale"
        }
      ],
      "y" : 0,
      "width" : 600,
      "type" : "group",
      "name" : "fb_post_5"
    }
  ]
};

$(document).ready(function() {

    // below code will upload image onclick mask image

    $('.container').click(function(e) {
        // filtering out non-canvas clicks
        if (e.target.tagName !== 'CANVAS') return;

        // getting absolute points relative to container
        const absX = e.offsetX + e.target.parentNode.offsetLeft + e.currentTarget.offsetLeft;
        const absY = e.offsetY + e.target.parentNode.offsetTop + e.currentTarget.offsetTop;

        const $canvasList = $(this).find('canvas');
        // moving all canvas parents on the same z-index
        $canvasList.parent().css({
            zIndex: 0
        });

        $canvasList.filter(function() { // filtering only applicable canvases
            const bbox = this.getBoundingClientRect();
            const canvasTop = bbox.top + window.scrollY;
            const canvasLeft = bbox.left + window.scrollX;
            return (
                absX >= canvasLeft && absX <= canvasLeft + bbox.width &&
                absY >= canvasTop && absY <= canvasTop + bbox.height)
        }).each(function() { // checking white in a click position
            const x = absX - this.parentNode.offsetLeft - e.currentTarget.offsetLeft;
            const y = absY - this.parentNode.offsetTop - e.currentTarget.offsetTop;
            const pixel = this.getContext('2d').getImageData(x, y, 1, 1).data;
            if (pixel[3] === 255) {
                $(this).parent().css({
                    zIndex: 2
                })
                target = this.id;
                console.log(target);
                setTimeout(() => {
                    $('#fileup').click();
                }, 20);
            }
        })
    });

    // Below code will fetch mask images from json file

    function getAllSrc(layers) {
        let arr = [];
        layers.forEach(layer => {
            if (layer.src) {
                arr.push({
                    src: layer.src,
                    x: layer.x,
                    y: layer.y,
                    name: layer.name
                });
            } else if (layer.layers) {
                let newArr = getAllSrc(layer.layers);
                if (newArr.length > 0) {
                    newArr.forEach(({
                        src,
                        x,
                        y,
                        name
                    }) => {
                        arr.push({
                            src,
                            x: (layer.x + x),
                            y: (layer.y + y),
                            name: (name)
                        });
                    });
                }
            }
        });
        return arr;
    }

    function json(data)

    {
        var width = 0;
        var height = 0;

        let arr = getAllSrc(data.layers);

        let layer1 = data.layers;
        width = layer1[0].width;
        height = layer1[0].height;
        let counter = 0;
        let table = [];

        for (let {
                src,
                x,
                y,
                name
            } of arr) {
            $(".container").css('width', width + "px").css('height', height + "px").addClass('temp');
            if (name.indexOf('mask_') !== -1) {
                var imageUrl1 = imageUrl;
            } else {
                var imageUrl1 = '';
            }
            var mask = $(".container").mask({
                imageUrl: imageUrl1,
                maskImageUrl: 'https://i.imgur.com/' + src,
                onMaskImageCreate: function(img) {

                    img.css({
                        "position": "absolute",
                        "left": x + "px",
                        "top": y + "px"
                    });

                },
                id: counter
            });
            table.push(mask);
            fileup.onchange = function() {

                let mask2 = table[target];
                const newImageLoadedId = mask2.loadImage(URL.createObjectURL(fileup.files[0]));
                document.getElementById('fileup').value = "";

                //  Edit image
                $("<span class="pip">" +
                    "<br/><a onclick='document.getElementById("light").style.display="block";'><span class="edit" >Edit </span>" +
                    '
content Close
' + "</span>").insertAfter("#fileup"); // Edit image code end here.... // Remove image $("<br/><span id="" + newImageLoadedId + "" class="remove">Remove image</span>").insertAfter("#fileup"); $(".remove").click(function(event) { const canvasId = "canvas#" + event.currentTarget.id; // Delete the image const ctx = $("canvas")[event.currentTarget.id].getContext("2d"); ctx.fillStyle = "white" ctx.fillRect(0, 0, 500, 500) // Delete the button $(this).remove(); }); // Remove image code end here.... }; counter++; } drawText(data); } json(jsonData); }); // end of document ready const fonts = []; // caching duplicate fonts function drawText(layer) { if (layer.type === 'image') return; if (!layer.type || layer.type === 'group') { return layer.layers.forEach(drawText) } if (layer.type === 'text') { const url = 'http://piccellsapp.com:1337/parse/files/PfAppId/' + layer.src; if (!fonts.includes(url)) { fonts.push(url); $("style").prepend("@font-face {n" + "tfont-family: "" + layer.font + "";n" + "tsrc: url(" + url + ") format('truetype');n" + "}"); } // Below is POP UP Code const lightId = 'light' + layer.name const lightIdString = '#' + lightId $('.container').append( '<a id ="' + layer.name + '" onclick="openPopUp(' + lightId + ')"' + '
' + layer.text + '
</a>' + '
content Close
' ); document.getElementById(lightId).style.left = layer.x + document.getElementById(layer.name).offsetWidth + 'px' // Above is POP UP Code } } // extempl code end // jq plugin (function($) { var JQmasks = []; $.fn.mask = function(options) { // This is the easiest way to have default options. var settings = $.extend({ // These are the defaults. maskImageUrl: undefined, imageUrl: undefined, scale: 1, id: new Date().getUTCMilliseconds().toString(), x: 0, // image start position y: 0, // image start position onMaskImageCreate: function(div) {}, }, options); var container = $(this); let prevX = 0, prevY = 0, draggable = false, img, canvas, context, image, timeout, initImage = false, startX = settings.x, startY = settings.y, div; container.mousePosition = function(event) { return { x: event.pageX || event.offsetX, y: event.pageY || event.offsetY }; } container.selected = function(ev) { var pos = container.mousePosition(ev); var item = $(".masked-img canvas").filter(function() { var offset = $(this).offset() var x = pos.x - offset.left; var y = pos.y - offset.top; var d = this.getContext('2d').getImageData(x, y, 1, 1).data; return d[0] > 0 }); JQmasks.forEach(function(el) { var id = item.length > 0 ? $(item).attr("id") : ""; if (el.id == id) el.item.enable(); else el.item.disable(); }); }; container.enable = function() { draggable = true; $(canvas).attr("active", "true"); div.css({ "z-index": 2 }); } container.disable = function() { draggable = false; $(canvas).attr("active", "false"); div.css({ "z-index": 1 }); } container.onDragStart = function(evt) { if (evt.target.getContext) { var pixel = evt.target.getContext('2d').getImageData(evt.offsetX, evt.offsetY, 1, 1).data; $(canvas).attr("active", "true"); container.selected(evt); prevX = evt.clientX; prevY = evt.clientY; var img = new Image(); evt.originalEvent.dataTransfer.setDragImage(img, 10, 10); evt.originalEvent.dataTransfer.setData('text/plain', 'anything'); } }; container.getImagePosition = function() { return { x: settings.x, y: settings.y, scale: settings.scale }; }; container.onDragOver = function(evt) { if (evt.target.getContext) { var pixel = evt.target.getContext('2d').getImageData(evt.offsetX, evt.offsetY, 1, 1).data; if (pixel[3] === 255) { if (draggable && $(canvas).attr("active") === "true") { var x = settings.x + evt.clientX - prevX; var y = settings.y + evt.clientY - prevY; if (x == settings.x && y == settings.y) return; // position has not changed settings.x += evt.clientX - prevX; settings.y += evt.clientY - prevY; prevX = evt.clientX; prevY = evt.clientY; clearTimeout(timeout); timeout = setTimeout(function() { container.updateStyle(); renderInnerImage(); }, 20); } } else { evt.stopPropagation(); return false; } } }; container.updateStyle = function() { return new Promise((resolve, reject) => { context.beginPath(); context.globalCompositeOperation = "source-over"; image = new Image(); image.setAttribute('crossOrigin', 'anonymous'); image.src = settings.maskImageUrl; image.onload = function() { canvas.width = image.width; canvas.height = image.height; context.drawImage(image, 0, 0, image.width, image.height); div.css({ "width": image.width, "height": image.height }); resolve(); }; }); }; function renderInnerImage() { img = new Image(); img.setAttribute('crossOrigin', 'anonymous'); img.src = settings.imageUrl; img.onload = function() { settings.x = settings.x == 0 && initImage ? (canvas.width - (img.width * settings.scale)) / 2 : settings.x; settings.y = settings.y == 0 && initImage ? (canvas.height - (img.height * settings.scale)) / 2 : settings.y; context.globalCompositeOperation = 'source-atop'; context.drawImage(img, settings.x, settings.y, img.width * settings.scale, img.height * settings.scale); initImage = false; }; } // change the draggable image container.loadImage = function(imageUrl) { console.log("load"); //if (img) // img.remove(); // reset the code. settings.y = startY; settings.x = startX; prevX = prevY = 0; settings.imageUrl = imageUrl; initImage = true; container.updateStyle().then(renderInnerImage); // sirpepole Add this return settings.id; }; // change the masked Image container.loadMaskImage = function(imageUrl, from) { canvas = document.createElement("canvas"); context = canvas.getContext('2d'); canvas.setAttribute("draggable", "true"); canvas.setAttribute("id", settings.id); settings.maskImageUrl = imageUrl; div = $("
", { "class": "masked-img" }).append(canvas); // div.find("canvas").on('touchstart mousedown', function(event) div.find("canvas").on('dragstart', function(event) { if (event.handled === false) return; event.handled = true; container.onDragStart(event); }); div.find("canvas").on('touchend mouseup', function(event) { if (event.handled === false) return; event.handled = true; container.selected(event); }); div.find("canvas").bind("dragover", container.onDragOver); container.append(div); if (settings.onMaskImageCreate) settings.onMaskImageCreate(div); container.loadImage(settings.imageUrl); }; container.loadMaskImage(settings.maskImageUrl); JQmasks.push({ item: container, id: settings.id }) return container; }; }(jQuery));
.temp {}

.container {
    background: silver;
  position: relative;
 
}

.container img {
   position:absolute;
   top:0;
   bottom:250px;
   left:0;
   right:0;
   margin:auto;
   z-index:999;
}

.masked-img {
    overflow: hidden;   
    position: relative;
}


.txtContainer{ position:absolute;  text-align:center; color:#FFF}

.txtContainer:hover {
     background: red;
     padding: 1px;
    border-style: dotted;
}

.pip {
  display: inline-block;
  margin: 10px 10px 0 0;
}
.remove {
  display: block;
  background: #444;
  border: 1px solid black;
  color: white;
  text-align: center;
  cursor: pointer;
}
.remove:hover {
  background: white;
  color: black;
}

.edit {
  display: block;
  background: #444;
  border: 1px solid black;
  color: white;
  text-align: center;
  cursor: pointer;
}
.edit:hover {
  background: white;
  color: black;
}

.white_content {
  display: none;
  position: absolute;
  top: 25%;
  left: 25%;
  width: 50%;
  height: 50%;
  padding: 16px;
  border: 16px solid orange;
  background-color: white;
  z-index: 1002;
  overflow: auto;
}
https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js




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