Develop Reference

On image change magnifier's image is not changing

But When i select the other picture it did not show in magnifier box, instead it show the default picture in magnifier. how i can fix that?. I want to change the image after selecting from below and magnifier should work on that image.
and magnifier position is very downside, can we also make the appropriate position
HTML
Css
.product-image {
height: 300px;
cursor: zoom-in;
}
.magnifier-container {
display: inline-block;
position: relative;
}
.magnifier {
display: none;
position: absolute;
top: 0;
left: 100%;
overflow: hidden;
height: 300px;
width: 300px;
border: 1px solid #ddd;
border-radius: 10px;
background-color: white;
}
.magnifier__img {
width: 1000px;
transform-origin: 150px 150px;
}
js
// most efficient way to add HTML, faster than innerHTML
const parseHTML = (htmlStr) => {
const range = document.createRange();
range.selectNode(document.body); // required in Safari
return range.createContextualFragment(htmlStr);
};
// pass this function any image element to add magnifying functionality
const makeImgMagnifiable = (img) => {
const magnifierFragment = parseHTML(`
<div class="magnifier-container">
<div class="magnifier">
<img class="magnifier__img" src="${img.src}"/>
</div>
</div>
`);
// This preserves the original element reference instead of cloning it.
img.parentElement.insertBefore(magnifierFragment, img);
const magnifierContainerEl = document.querySelector(".magnifier-container");
img.remove();
magnifierContainerEl.appendChild(img);
// query the DOM for the newly added elements
const magnifierEl = magnifierContainerEl.querySelector(".magnifier");
const magnifierImg = magnifierEl.querySelector(".magnifier__img");
// set up the transform object to be mutated as mouse events occur
const transform = {
translate: [0, 0],
scale: 1,
};
// shortcut function to set the transform css property
const setTransformStyle = (el, { translate, scale }) => {
const [xPercent, yRawPercent] = translate;
const yPercent = yRawPercent < 0 ? 0 : yRawPercent;
// make manual pixel adjustments to better center
// the magnified area over the cursor.
const [xOffset, yOffset] = [
`calc(-${xPercent}% + 250px)`,
`calc(-${yPercent}% + 70px)`,
];
el.style = `
transform: scale(${scale}) translate(${xOffset}, ${yOffset});
`;
};
// show magnified thumbnail on hover
img.addEventListener("mousemove", (event) => {
const [mouseX, mouseY] = [event.pageX + 40, event.pageY - 20];
const { top, left, bottom, right } = img.getBoundingClientRect();
transform.translate = [
((mouseX - left) / right) * 100,
((mouseY - top) / bottom) * 100,
];
magnifierEl.style = `
display: block;
top: ${mouseY}px;
left: ${mouseX}px;
`;
setTransformStyle(magnifierImg, transform);
});
// zoom in/out with mouse wheel
img.addEventListener("wheel", (event) => {
event.preventDefault();
const scrollingUp = event.deltaY < 0;
const { scale } = transform;
transform.scale =
scrollingUp && scale < 3
? scale + 0.1
: !scrollingUp && scale > 1
? scale - 0.1
: scale;
setTransformStyle(magnifierImg, transform);
});
// reset after mouse leaves
img.addEventListener("mouseleave", () => {
magnifierEl.style = "";
magnifierImg.style = "";
});
};
const img = document.querySelector(".product-image");
makeImgMagnifiable(img);

Mouse dragging an element

I've been waiting to ask this question for a long time, but couldn't, because I knew I would get bad reputation. This post was very hard to post, but I REALLY need this code...
Let's say there was a draggable element with the ID of "dragme"... You have to drag and drop the element to a specific spot. I was wondering if there is a code that does this task automatically for me when I execute a function. Lets name that function "dropElement". I am trying to drag "dragme" to my mouse position with a "dragElement" function with jquery or js.
This is what I tried:
(function() {
'use strict';
var mouseX = 0;
var mouseY = 0;
var timer = 0;
//tracks mouse position
document.body.addEventListener("mousemove", function(e) {mouseX = e.clientX; mouseY = e.clientY;});
function dropElement() {
$("#dragme").trigger($.Event("mousedown", {button: 0}));
$("body").trigger($.Event("mouseup", {button: 0, clientX: mouseX, clientY: mouseY}));
timer = setTimeout(drop, 100);
}
dropElement() //executes function and drops "dragme" to mouse position

I found the code in the question a bit complex to follow, especially with a timing function.
Instead I've gone back to basics (and vanilla JS) to think about the sequence of events. The user moves the mouse, we aren't interested unless they have put the mousedown within the element we want to drag. So this snippet sets a variable isDown which is set to true when the user puts the mouse down on the element.
Then it looks for a mousemove event on the whole window and if isDown is set it moves the element.
We also look for the mouseup event on the window and unset isDown.
The reason for looking for some events on the actual element and some on the window is because things are moving - the mouse may get out of the window before it is released for example.
let isDown = false;
const dragMe = document.querySelector('.dragme');
dragMe.addEventListener('mousedown', function() {
isDown = true;
});
window.addEventListener('mouseup', function() {
isDown = false;
});
window.addEventListener('mousemove', function() {
if (isDown) {
dragMe.style.top = event.clientY + 'px';
dragMe.style.left = event.clientX + 'px';
}
});
.dragme {
width: 5em;
height: 5em;
background-color: cyan;
position: relative;
top: 0;
left: 0;
}
<div class="dragme">Drag me</div>

I hope this sample helps you
var drag = {
elem: null,
x: 0,
y: 0,
state: false
};
var delta = {
x: 0,
y: 0
};
function dropElement(e){
var cur_offset = $("#autoDrag").offset();
$("#autoDrag").animate({
left: (e.pageX),
top: (e.pageY )
});
}
$(document).mousedown(function(e) {
dropElement(e);
})
$("#dragMe").mousedown(function(e) {
drag.elem = dragMe;
drag.x = e.pageX;
drag.y = e.pageY;
drag.state = true;
})
$(document).mousemove(function(e) {
if ( drag.state) {
delta.x = e.pageX - drag.x;
delta.y = e.pageY - drag.y;
var cur_offset = $(drag.elem).offset();
$(drag.elem).offset({
left: (cur_offset.left + delta.x),
top: (cur_offset.top + delta.y)
});
drag.x = e.pageX;
drag.y = e.pageY;
}
})
$("#dragMe").mouseup(function() {
drag.state = false;
})
#dragMe {
position: absolute;
display: flex;
justify-content: center;
align-items: center;
width: 80px;
height: 80px;
padding:10px;
background-color: #00a1ff;
color: white;
border-radius: 50px;
}
#autoDrag {
position: absolute;
right:0;
display: flex;
justify-content: center;
align-items: center;
text-align:center;
width: 80px;
height: 80px;
padding:10px;
background-color: #ff00ff;
color: white;
border-radius: 50px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<span id="dragMe">DragMe!</span>
<span id="autoDrag">Click somewhere I will be there!</span>

Get percentage clicked of elements width along the x-axis

I have a page structure that looks like in the image below. When clicking anywhere in the #progress element I want to calculate how many percentages of it's full width that was clicked.
How can this be done?
< div id="progress" onMouseUp={ e => this._seekTo(e) }></div>
...
_seekTo(event) {
var progress = document.getElementById('progress');
console.log((event.clientX - progress.offsetLeft) / progress.offsetWidth * 100)
}

You can get the percentage click position of an elements width along the x-axis like:
document.getElementById('progress').addEventListener('click', function(e) {
var bcr = this.getBoundingClientRect();
console.log('You clicked to ', (e.clientX - bcr.left) / bcr.width);
});
e.clientX provides the horizontal coordinate within the application's client area at which the event occurred. source
Example progress bar:
function mouseSliderPosition(element, e) {
var bcr = element.getBoundingClientRect();
return {
x: Math.min(Math.max(0, (e.clientX - bcr.left) / bcr.width), 1),
y: Math.min(Math.max(0, (e.clientY - bcr.top) / bcr.height), 1)
}
};
function activateSlider(e) {
if (e.touches && e.touches.length > 1) {
return;
}
e.preventDefault();
window.activeSlider = this;
handleSliderMove(e);
}
function handleSliderMove(e) {
if (e.touches && e.touches.length > 1) {
return;
}
if (window.activeSlider) {
var progressBar = window.activeSlider.getElementsByClassName('progress-bar')[0];
var progressFill = window.activeSlider.getElementsByClassName('progress-fill')[0];
var value = mouseSliderPosition(progressBar, e.touches && e.touches[0] || e).x;
progressFill.style.transform = 'scaleX(' + value + ')';
}
}
function deactivateSlider(e) {
if (e.touches && e.touches.length > 0) {
return;
}
this.activeSlider = null;
}
document.querySelector('.progress-slider').addEventListener('mousedown', activateSlider)
document.querySelector('.progress-slider').addEventListener('touchstart', activateSlider)
window.addEventListener('mousemove', handleSliderMove);
window.addEventListener('mouseup', deactivateSlider);
window.addEventListener('touchmove', handleSliderMove);
window.addEventListener('touchend', deactivateSlider);
window.activeSlider = null;
.progress-slider {
padding: 10px;
cursor: pointer;
}
.progress-bar {
height: 2px;
background: rgba(100,100,100,0.5);
}
.progress-slider:hover .progress-bar {
height: 3px;
}
.progress-fill {
height: 100%;
background: rgba(255, 0, 0, 0.7);
transform-origin: 0 50%;
transform: scaleX(0);
}
<div class="progress-slider">
<div class="progress-bar"><div class="progress-fill"></div></div>
</div>

Background position animation on hover

I have a div1 which animates background position on hover direction of mouse by jquery.
But it's working properly. it's going not right direction and I want it to work on every single mouse hover on the div.
Find jsfiddle
code:
$(function() {
$(".mainCont").hover(function(e) {
// $(this).addClass("hoverOnce");
var edge = closestEdge(e.pageX, e.pageY, $(this).width(), $(this).height());
}, function(){
$(this).removeClass('top right bottom left');
// $(this).removeClass("hoverOnce");
});
});
function closestEdge(x,y,w,h) {
var topEdgeDist = distMetric(x,y,w/2,0);
var bottomEdgeDist = distMetric(x,y,w/2,h);
var leftEdgeDist = distMetric(x,y,0,h/2);
var rightEdgeDist = distMetric(x,y,w,h/2);
var min = Math.min(topEdgeDist,bottomEdgeDist,leftEdgeDist,rightEdgeDist);
switch (min) {
case leftEdgeDist:
$(".hoverOnce").addClass("left");
case rightEdgeDist:
$(".hoverOnce").addClass("right");
case topEdgeDist:
$(".hoverOnce").addClass("top");
case bottomEdgeDist:
$(".hoverOnce").addClass("bottom");
}
}
function distMetric(x,y,x2,y2) {
var xDiff = x - x2;
var yDiff = y - y2;
return (xDiff * xDiff) + (yDiff * yDiff);
}

The size of this image that you use in the background is 700x500:
http://thesis2010.micadesign.org/kropp/images/research/bird_icon.png
I think that if you add these settings to .mainCont that this will get you the desired result:
width: 700px;
height: 500px;
position: absolute;
For example:
.mainCont {
width: 700px;
height: 500px;
background: url(http://thesis2010.micadesign.org/kropp/images/research/bird_icon.png) no-repeat center center;
transition: all 0.5s ease-in-out;
margin: 100px auto;
position: absolute;
}
Fiddle

Finally, It got solved.
find fiddle demo
$('.mainCont').hover(function(e){
var dir = determineDirection($(this), {x: e.pageX, y: e.pageY});
$(this).addClass('direction_'+dir);
}, function() {
$(this).removeClass('direction_3 direction_1 direction_2 direction_0');
});
function determineDirection($el, pos){
var w = $el.width(),
h = $el.height(),
x = (pos.x - $el.offset().left - (w/2)) * (w > h ? (h/w) : 1),
y = (pos.y - $el.offset().top - (h/2)) * (h > w ? (w/h) : 1);
return Math.round((((Math.atan2(y,x) * (180/Math.PI)) + 180)) / 90 + 3) % 4;
}

interact js with guide line

Interact.js has a snap option to snapping element. But I don't know how to show those guide lines. I was thinking about there might be some events trggered when snapping happened, and I might use them to show those lines, but I didn't find them in the documentation.

interact doesn't support those guidelines out of the box, but you can build them relatively easy for yourself.
I built this fiddle to show the process.
The important part is this:
interact(element)
.draggable({
snap: {
targets: [
function (x, y) {
var newX = Math.round(x / 50) * 50;
var newY = Math.round(y / 50) * 50;
someFunction(newX, newY);
return {
x: newX,
y: newY
};
}],
As you can see, you can build the function that determines the snapping position (newX and newY) in regard to your current mouse position.
In this function you can also call another function. In this case I called a function to show one line if the object is at this position. Here you can get creative. You could set the position of one line Element to the current position, you could set some predefined lines and calculate which is the closest to only show that one, this depends on you business problem.
For more information about interact - snapping, look in here in the docs

might be a bit late but it still can be useful for those who struggle with alignment. Here is my complete approach:
Codepen: https://codepen.io/lakers19/pen/ZEoPpKL
const targets = []
const cleanXLine = () => {
const guideLineX = document.querySelector('.guide-line-x')
guideLineX.style.left = 0
guideLineX.style.top = 0
guideLineX.style.width = 0
guideLineX.style.height = 0
}
const cleanYLine = () => {
const guideLineY = document.querySelector('.guide-line-y')
guideLineY.style.left = 0
guideLineY.style.top = 0
guideLineY.style.width = 0
guideLineY.style.height = 0
}
const resetGuideLine = () => {
cleanXLine()
cleanYLine()
}
const handleStart = (event) => {
// get all interactive elements
targets.length = 0
const elements = document.querySelectorAll('.draggable')
elements.forEach((element) => {
const rect = element.getBoundingClientRect()
const { x, y, width, height } = rect
if (element === event.target) return
const actualX = x + window.scrollX
const actualY = y + window.scrollY
const range = 4
targets.push({
x: actualX,
range,
rect,
element,
})
targets.push({
x: actualX + width,
range,
rect,
element,
})
targets.push({
x: actualX + width / 2,
range,
rect,
element,
})
targets.push({
y: actualY,
range,
rect,
element,
})
targets.push({
y: actualY + height,
range,
rect,
element,
})
targets.push({
y: actualY + height / 2,
range,
rect,
element,
})
})
}
const drawGuideLine = (event) => {
const inRange = event.modifiers.length ? event.modifiers[0]?.inRange : false
if (inRange) {
const guideLineX = document.querySelector('.guide-line-x')
const guideLineY = document.querySelector('.guide-line-y')
const {
x: xModifier,
y: yModifier,
rect,
} = event.modifiers[0].target.source
const { x, y } = event.target.getBoundingClientRect()
if (xModifier) {
guideLineX.style.left = `${xModifier}px`
guideLineX.style.top = `${Math.min(rect.y, y)}px`
guideLineX.style.width = '1px'
guideLineX.style.height = `${Math.abs(rect.y - y)}px`
cleanYLine()
}
if (yModifier) {
console.log(rect.x - x)
guideLineY.style.left = `${Math.min(rect.x, x)}px`
guideLineY.style.top = `${yModifier - window.scrollY}px`
guideLineY.style.width = `${Math.abs(rect.x - x)}px`
guideLineY.style.height = '1px'
cleanXLine()
}
} else {
resetGuideLine()
}
}
interact('.draggable')
.draggable({
// enable inertial throwing
inertia: false,
// keep the element within the area of it's parent
modifiers: [interact.modifiers.snap({
targets: targets,
relativePoints: [
{ x: 0, y: 0 }, // snap relative to the element's top-left,
{ x: 0.5, y: 0.5 }, // to the center
{ x: 1, y: 1 }, // and to the bottom-right
],
}),
interact.modifiers.restrictRect({
restriction: 'parent',
endOnly: true
})
],
// enable autoScroll
autoScroll: true,
listeners: {
// call this function on every dragmove event
move: dragMoveListener,
start: handleStart,
// call this function on every dragend event
end (event) {
resetGuideLine()
}
}
})
function dragMoveListener (event) {
drawGuideLine(event)
var target = event.target
// keep the dragged position in the data-x/data-y attributes
var x = (parseFloat(target.getAttribute('data-x')) || 0) + event.dx
var y = (parseFloat(target.getAttribute('data-y')) || 0) + event.dy
// translate the element
target.style.transform = 'translate(' + x + 'px, ' + y + 'px)'
// update the posiion attributes
target.setAttribute('data-x', x)
target.setAttribute('data-y', y)
}
// this function is used later in the resizing and gesture demos
window.dragMoveListener = dragMoveListener
#canvas{
width: 100vw;
height: 100vh;
background: rgb(22, 197, 180);
}
.draggable {
background: rgb(71, 44, 113);
width: 60px;
height: 60px;
}
.draggable:nth-child(1){
translate: 20px 10px;
}
.draggable:nth-child(2){
translate: 50px 60px;
}
body {
display: grid;
place-items: center;
place-content: center;
height: 100%;
}
html{
height: 100%;
}
.guide-line {
pointer-events:none;
background:red;
position:fixed;
display: flex;
justify-items:space-between;
width: 0;
height:0;
left:0;
right:0;
}
.guide-line > span {
font-size: 9px;
line-height: 0;
color: red;
position: absolute;
}
.guide-line-x > span {
transform: translateX(-50%);
left: 50%;
}
.guide-line-y{
flex-direction:row;
}
.guide-line-x {
flex-direction:column;
}
.guide-line-y > span{
transform: translateY(-50%);
top: 50%;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/interact.js/1.10.17/interact.min.js"></script>
<div id="canvas">
<div class="draggable" ></div>
<div class="draggable"> </div>
<div class="guide-line-y guide-line">
<span style="opacity:0" >x</span>
<span>x</span>
</div>
<div class="guide-line-x guide-line">
<span style="opacity:0">x</span>
<span>x</span>
</div>
</div>