Vue 3 Image Magnifier Working Functionality

Hello my friends, welcome back to my blog. Today in this blog post, I am going to show you, Vue 3 Image Magnifier Working Functionality.

Vue 3 came and if you are new then you must check below link:
Vuejs

Friends now I proceed onwards and here is the working code snippet and please use this carefully to avoid the mistakes:

1. Firstly friends we need fresh vuejs(Vue 3) setup and for that we need to run below commands into our terminal and also w should have latest node version installed on our system:

Guys you can skip this first step if you already have vuejs fresh setup:

npm install -g @vue/cli

vue create vuedemo

cd vuedemo

npm run serve //http://localhost:8080/

2. Now friends please create new file “App.css” inside src folder and add below code inside it:

* {box-sizing: border-box;}
.img-magnifier-container {
  position:relative;
}
.img-magnifier-glass {
  position: absolute;
  border: 3px solid #000;
  border-radius: 50%;
  cursor: none;
  /*Set the size of the magnifier glass:*/
  width: 100px;
  height: 100px;
}

3. Finally friends we need to add below code into our src/App.vue file to get final output on web browser:

<template>
 

   <div class="img-magnifier-container">
    <img id="myimage" src="https://therichpost.com/wp-content/uploads/2021/05/category_img_02.jpg" width="600" height="400">
  </div>

   
    
</template>
<script>
import "./App.css";
import "./App.js";
export default {
}
</script>

4. Now friends please create new file “App.js” inside src folder and add below code inside it:

//Image Magnifire Functions
function magnify(imgID, zoom) {
    var img, glass, w, h, bw;
    img = document.getElementById(imgID);
    /*create magnifier glass:*/
    glass = document.createElement("DIV");
    glass.setAttribute("class", "img-magnifier-glass");
    /*insert magnifier glass:*/
    img.parentElement.insertBefore(glass, img);
    /*set background properties for the magnifier glass:*/
    glass.style.backgroundImage = "url('" + img.src + "')";
    glass.style.backgroundRepeat = "no-repeat";
    glass.style.backgroundSize = (img.width * zoom) + "px " + (img.height * zoom) + "px";
    bw = 3;
    w = glass.offsetWidth / 2;
    h = glass.offsetHeight / 2;
    /*execute a function when someone moves the magnifier glass over the image:*/
    glass.addEventListener("mousemove", moveMagnifier);
    img.addEventListener("mousemove", moveMagnifier);
    /*and also for touch screens:*/
    glass.addEventListener("touchmove", moveMagnifier);
    img.addEventListener("touchmove", moveMagnifier);
    function moveMagnifier(e) {
      var pos, x, y;
      /*prevent any other actions that may occur when moving over the image*/
      e.preventDefault();
      /*get the cursor's x and y positions:*/
      pos = getCursorPos(e);
      x = pos.x;
      y = pos.y;
      /*prevent the magnifier glass from being positioned outside the image:*/
      if (x > img.width - (w / zoom)) {x = img.width - (w / zoom);}
      if (x < w / zoom) {x = w / zoom;}
      if (y > img.height - (h / zoom)) {y = img.height - (h / zoom);}
      if (y < h / zoom) {y = h / zoom;}
      /*set the position of the magnifier glass:*/
      glass.style.left = (x - w) + "px";
      glass.style.top = (y - h) + "px";
      /*display what the magnifier glass "sees":*/
      glass.style.backgroundPosition = "-" + ((x * zoom) - w + bw) + "px -" + ((y * zoom) - h + bw) + "px";
    }
    function getCursorPos(e) {
      var a, x = 0, y = 0;
      e = e || window.event;
      /*get the x and y positions of the image:*/
      a = img.getBoundingClientRect();
      /*calculate the cursor's x and y coordinates, relative to the image:*/
      x = e.pageX - a.left;
      y = e.pageY - a.top;
      /*consider any page scrolling:*/
      x = x - window.pageXOffset;
      y = y - window.pageYOffset;
      return {x : x, y : y};
    }
  }

  //Image Magnifire Calls
  setTimeout(function(){ 
  magnify("myimage", 3);
   }, 1000);

Now we are done friends also and If you have any kind of query or suggestion or any requirement then feel free to comment below.

Note: Friends, I just tell the basic setup and things, you can change the code according to your requirements. For better understanding must watch video above.

I will appreciate that if you will tell your views for this post. Nothing matters if your views will be good or bad.

Jassa

Thanks