Onclick Image We are Providing options for users to upload image from their computer, after user upload image, then we are displaying "Remove" text.... once user click on "Remove", we are deleting the uploaded image....
Requirement :
Before user click on Remove Text , he should't able to upload another image....
it's working for single image....
Issue :
But if there are multiple images , once user upload on 1st image, then its not allowing to upload image on 2nd image.... but this should't happen....
codepen : https://codepen.io/kidsdial/pen/PgmzOE
Fiddle : https://jsfiddle.net/kidsdial1/5xuLd8yt/
Below is code snippet :
var target;
var imageUrl = "https://i.imgur.com/RzEm1WK.png";
// Json - it includes mask image
let jsonData = {
"layers" : [
{
"x" : 0,
"height" : 612,
"layers" : [
{
"x" : 0,
"y" : 0,
"name" : "L2a"
},
{
"x" : 160,
"layers" : [
{
"x" : 0,
"src" : "ax0HVTs.png",
"y" : 0,
"name" : "L2b-1"
},
{
"x" : 0,
"y" : 0,
"name" : "L2b-2"
}
],
"y" : 291,
"name" : "user_image_1"
},
{
"x" : 25,
"layers" : [
{
"x" : 0,
"src" : "hEM2kEP.png",
"y" : 0,
"name" : "L2C-1"
},
{
"x" : 0,
"y" : 0,
"name" : "L2C-2"
}
],
"y" :22,
"name" : "L2"
}
],
"y" : 0,
"width" : 612,
"name" : "L1"
}
]
};
$(document).ready(function() {
// upload image onclick mask image
$('.container').click(function(e) {
var res = e.target;
target = res.id;
console.log(target);
if (e.target.getContext) {
// click only inside Non Transparent part
// $('.container').css('pointer-events','none');
var pixel = e.target.getContext('2d').getImageData(e.offsetX, e.offsetY, 1, 1).data;
if (pixel[3] === 255) {
setTimeout(() => {
$('#fileup').click();
}, 20);
}
}
});
// Below code will fetch mask image 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;
let counter = 0;
let table = [];
for (let {
src,
x,
y,
name
} of arr) {
var mask = $(".container").mask({
// icon :
imageUrl: imageUrl,
// Mask image :
maskImageUrl: 'https://i.imgur.com/' + src,
onMaskImageCreate: function(img) {
// image positions :
img.css({
"position": "absolute",
"left": x + "px",
"top": y + "px"
});
},
id: counter
});
table.push(mask);
fileup.onchange = function() {
//u day code
$('.container').css('pointer-events','none');
let mask2 = table[target];
const newImageLoadedId = mask2.loadImage(URL.createObjectURL(fileup.files[0]));
document.getElementById('fileup').value = "";
// Remove image
$("<br/><span id=\"" + newImageLoadedId + "\" class=\"remove\">Remove image</span>").insertAfter("#fileup");
$(".remove").click(function(event) {
$('.container').css('pointer-events','');
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
$(this).remove();
});
// Remove image code end here....
};
counter++;
}
}
json(jsonData);
}); // end of document ready
// upload image & drag code
(function($) {
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.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);
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 = $("<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));.container
{
background: gold;
position: relative;
width:612px;
height:612px;
}
.container img {
position:absolute;
top:0;
bottom:250px;
left:0;
right:0;
margin:auto;
z-index:999;
}
.masked-img {
overflow: hidden;
position: relative;
}
.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;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input id="fileup" name="fileup" type="file" style="display:none" >
<div class="container">
</div>I used below code to restrict uploading image before click on Remove text :
$('.container').css('pointer-events','none');
$('.container').css('pointer-events','');
Before adding above 2 lines, It was working fine as here : codepen2
