I have an image on a React page. When the state is updated to a new image I want to perform the following transition effect:
The original image should zoom in and fade out
The new image should also zoom in and fade in
The effect should look similar to passing through a wall to a new scene.
How am I able to do this in React?
As #pgsandstrom mentioned, React Transition Group is the way to go. Unfortunately, it's not very developer friendly (pretty steep learning curve).
Here's a working example: https://codesandbox.io/s/6lmv669kz
✔ Original image zooms in while fading out
✔ New image zooms in while fading in
TransitionExample.js
import random from "lodash/random";
import React, { Component } from "react";
import { CSSTransition, TransitionGroup } from "react-transition-group";
import uuid from "uuid/v1";
const arr = [
{
id: uuid(),
url: `https://loremflickr.com/600/100?lock=${random(0, 999)}`
},
{
id: uuid(),
url: `https://loremflickr.com/600/100?lock=${random(0, 999)}`
},
{
id: uuid(),
url: `https://loremflickr.com/600/100?lock=${random(0, 999)}`
}
];
export default class TransitionExample extends Component {
state = {
index: 0,
selected: arr[0]
};
nextImage = () =>
this.setState(prevState => {
const newIndex = prevState.index < arr.length - 1 ? prevState.index + 1 : 0;
return {
index: newIndex,
selected: arr[newIndex]
};
});
render = () => (
<div className="app">
<div style={{ marginBottom: 30, height: 100 }}>
<TransitionGroup>
<CSSTransition
key={this.state.selected.id}
timeout={1000}
classNames="messageout"
>
<div style={{ marginTop: 20 }}>
<img className="centered-image" src={this.state.selected.url} />
</div>
</CSSTransition>
</TransitionGroup>
</div>
<div style={{ textAlign: "center" }}>
<button
className="uk-button uk-button-primary"
onClick={this.nextImage}
>
Next Image
</button>
</div>
</div>
);
}
styles.css
.app {
margin: 0 auto;
overflow: hidden;
width: 700px;
height: 800px;
}
.centered-image {
display: block;
margin: 0 auto;
}
/* starting ENTER animation */
.messageout-enter {
position: absolute;
top: 0;
left: calc(13% + 5px);
right: calc(13% + 5px);
opacity: 0.01;
transform: translateY(0%) scale(0.01);
}
/* ending ENTER animation */
.messageout-enter-active {
opacity: 1;
transform: translateY(0%) scale(1);
transition: all 1000ms ease-in-out;
}
/* starting EXIT animation */
.messageout-exit {
opacity: 1;
transform: scale(1.01);
}
/* ending EXIT animation */
.messageout-exit-active {
opacity: 0;
transform: scale(4);
transition: all 1000ms ease-in-out;
}
It sounds like you are looking for React Transition Group. It is the "official" way of solving these issues. Specifically I think this is what you should use. It can be a bit tricky to get a hang of, but it is really nice and powerful once you understand it.
This worked for me (link):
index.js:
import React from "react";
import { render } from "react-dom";
import "./styles.scss";
const src1 =
"https://www.nba.com/dam/assets/121028030322-james-harden-traded-102712-home-t1.jpg";
const src2 = "https://www.nba.com/rockets/sites/rockets/files/wcwebsite.jpg";
var state = {
toggle: true
};
class App extends React.Component {
render() {
const cn1 = "imgFrame " + (state.toggle ? "toggleOut" : "toggleIn");
const cn2 = "imgFrame " + (state.toggle ? "toggleIn" : "toggleOut");
return (
<div>
<img className={cn1} src={src1} alt={"img1"} />
<img className={cn2} src={src2} alt={"img2"} />
<button
onClick={() => {
state.toggle = !state.toggle;
this.forceUpdate();
}}
>
click me to toggle
</button>
<h1>Hello</h1>
</div>
);
}
}
render(<App />, document.getElementById("app"));
style.scss:
html,
body {
background-color: papayawhip;
font-family: sans-serif;
h1 {
color: tomato;
}
}
#keyframes fadeout {
0% {
opacity: 1;
transform: scale(1);
}
100% {
opacity: 0;
transform: scale(0.9);
}
}
#keyframes fadein {
0% {
opacity: 0;
transform: scale(1.1);
}
100% {
opacity: 1;
transform: scale(1);
}
}
.toggleOut {
animation: fadeout 500ms;
opacity: 0;
}
.toggleIn {
animation: fadein 500ms;
opacity: 1;
}
.imgFrame {
position: absolute;
top: 10px;
left: 10px;
width: 200px;
height: 200px;
}
button {
position: absolute;
top: 220px;
}
Wrap with a simple <Animate on={value} /> component that triggers an animation when value changes and is not undefined.
function Animate({ children, on }) {
return (on === undefined)
? <div>{children}</div>
: <div className="fade-in" key={on}>{children}</div>
}
import { useEffect, useState } from 'react'
function TestAnimate() {
const [value, setValue] = useState() // undefined
// update value every second
useEffect(() => {
setInterval(() => setValue(new Date().toLocaleString()), 1_000)
}, [])
return (
<Animate on={value}>
Value: {value}
</Animate>
)
}
#keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
.fade-in {
animation: fadeIn 500ms ease-in-out;
}
Hello guys it's been bugging me all night. I've been trying to get together a word rotate feature that decreases in speed and then eventually stops. Think of it like a word roulette. So i have the words stored in an array and it looks over the words and displays them. Now, i need to decelerate the speed and slowly make it stop and a random lettter, how would i go about this ?
<?php
$json=file_get_contents('http://ddragon.leagueoflegends.com/cdn/5.18.1/data/en_US/champion.json');
$champions = json_decode($json);
?>
<?php
$championsArray = array();
foreach($champions->data as $champion){
$championsArray[] = $champion->id;
}
shuffle($championsArray);
$speed = 1000;
$count = count($championsArray);
var_dump($championsArray);
?>
<!DOCTYPE html>
<html lang="en" class="demo1 no-js">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery Super Simple Text Rotator Demo 1: Default Settings</title>
<meta name="description" content="Rotating text is a very simple idea where you can add more content to a text area without consuming much space by rotating an individual word with a collection of others" />
<meta name="keywords" content="jquery text rotator, css text rotator, rotate text, inline text rotator" />
<meta name="author" content="Author for Onextrapixel" />
<link rel="shortcut icon" href="../file/favicon.gif">
<link rel="stylesheet" type="text/css" href="css/default.css" />
<!-- Edit Below -->
<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script>
<link rel="stylesheet" href="jquery.wordrotator.css">
<script src="jquery.wordrotator.js"></script>
</head>
<body class="demo1">
<div class="container">
<p><span id="myWords"></span></p>
<div class="main">
Go!
</div>
</div><!-- Container -->
<script type="text/javascript">
function eventFire(el, etype){
if (el.fireEvent) {
el.fireEvent('on' + etype);
} else {
var evObj = document.createEvent('Events');
evObj.initEvent(etype, true, false);
el.dispatchEvent(evObj);
}
}
function erm() {
var cont = $("#myWords");
$(function () {
$("#myWords").wordsrotator({
randomize: true,
stopOnHover: true, //stop animation on hover
words: ['Heimerdinger','Ezreal','Skarner','Nunu','Kennen','Lulu','Morgana','Sejuani','Draven','Nocturne','KogMaw','Jinx','Khazix','Cassiopeia','Fiora','Maokai','Zac','Quinn','Vladimir','RekSai','LeeSin','TwistedFate','MissFortune','Shaco','Vayne','Sivir','Urgot','Nautilus','Annie','Fizz','Janna','Irelia','Karthus','Trundle','Jax','Graves','Leona','Rengar','Amumu','Malzahar','TahmKench','MasterYi','Twitch','Rumble','Nidalee','Shyvana','Veigar','Singed','Riven','Leblanc','Katarina','Azir','Viktor','Poppy','Ahri','Yorick','Aatrox','Brand','Tryndamere','DrMundo','Hecarim','Braum','Nasus','Pantheon','Elise','Velkoz','Swain','Darius','Kayle','Thresh','Nami','Ekko','Alistar','Galio','Warwick','Orianna','Sona','Lux','Ryze','Jayce','Kassadin','Volibear','Blitzcrank','Gangplank','Karma','XinZhao','Ziggs','Malphite','Tristana','Soraka','Anivia','Xerath','Renekton','Shen','Lissandra','Ashe','Mordekaiser','Talon','Zilean','JarvanIV','Rammus','Yasuo','Vi','Bard','Sion','Udyr','MonkeyKing','Akali','Diana','Varus','Kalista','Evelynn','Teemo','Gnar','Garen','Taric','FiddleSticks','Chogath','Zed','Lucian','Caitlyn','Corki','Zyra','Syndra','Gragas','Olaf']
});
});
eventFire(document.getElementById('myWords'), 'click');
}
</script>
</body>
</html>
Can anyone figure out a solution for this?
You could modify a bit the wordrotator plugin so that it allows to change the speed on each rotate.
You'll have to tweak the animation and the speed increment, but this should give you some ideas:
(function ($) {
$.fn.wordsrotator = function (options) {
var defaults = {
autoLoop: true,
randomize: false,
stopOnHover: false,
changeOnClick: false,
words: null,
animationIn: "flipInY",
animationOut: "flipOutY",
speed: 40,
onRotate: function () {},//you add these 2 methods to allow the effetct
stopRotate: function () {}
};
var settings = $.extend({}, defaults, options);
var listItem
var array_bak = [];
var stopped = false;
settings.stopRotate = function () {//you call this one to stop rotate
stopped = true;
}
return this.each(function () {
var el = $(this)
var cont = $("#" + el.attr("id"));
var array = [];
//if array is not empty
if ((settings.words) || (settings.words instanceof Array)) {
array = $.extend(true, [], settings.words);
//In random order, need a copy of array
if (settings.randomize) array_bak = $.extend(true, [], array);
listItem = 0
//if randomize pick a random value for the list item
if (settings.randomize) listItem = Math.floor(Math.random() * array.length)
//init value into container
cont.html(array[listItem]);
// animation option
var rotate = function () {
cont.html("<span class='wordsrotator_wordOut'><span>" + array[listItem] + "</span></span>");
if (settings.randomize) {
//remove printed element from array
array.splice(listItem, 1);
//refill the array from his copy, if empty
if (array.length == 0) array = $.extend(true, [], array_bak);
//generate new random number
listItem = Math.floor(Math.random() * array.length);
} else {
//if reached the last element of the array, reset the index
if (array.length == listItem + 1) listItem = -1;
//move to the next element
listItem++;
}
$("<span class='wordsrotator_wordIn'>" + array[listItem] + "</span>").appendTo(cont);
cont.wrapInner("<span class='wordsrotator_words' />");
cont.find(".wordsrotator_wordOut").addClass("animated " + settings.animationOut);
cont.find(".wordsrotator_wordIn").addClass("animated " + settings.animationIn);
settings.onRotate();//this callback will allow to change the speed
if (settings.autoLoop && !stopped) {
//using timeout instead of interval will allow to change the speed
t = setTimeout(function () {
rotate()
}, settings.speed, function () {
rotate()
});
if (settings.stopOnHover) {
cont.hover(function () {
window.clearTimeout(t)
}, function () {
t = setTimeout(rotate, settings.speed, rotate);
});
};
}
};
t = setTimeout(function () {
rotate()
}, settings.speed, function () {
rotate()
})
cont.on("click", function () {
if (settings.changeOnClick) {
rotate();
return false;
};
});
};
});
}
}(jQuery));
function eventFire(el, etype) {
if (el.fireEvent) {
el.fireEvent('on' + etype);
} else {
var evObj = document.createEvent('Events');
evObj.initEvent(etype, true, false);
el.dispatchEvent(evObj);
}
}
function erm() {
var cont = $("#myWords");
$(function () {
$("#myWords").wordsrotator({
animationIn: "fadeOutIn", //css class for entrace animation
animationOut: "fadeOutDown", //css class for exit animation
randomize: true,
stopOnHover: true, //stop animation on hover
words: ['Heimerdinger', 'Ezreal', 'Skarner', 'Nunu', 'Kennen', 'Lulu', 'Morgana', 'Sejuani', 'Draven', 'Nocturne', 'KogMaw', 'Jinx', 'Khazix', 'Cassiopeia', 'Fiora', 'Maokai', 'Zac', 'Quinn', 'Vladimir', 'RekSai', 'LeeSin', 'TwistedFate', 'MissFortune', 'Shaco', 'Vayne', 'Sivir', 'Urgot', 'Nautilus', 'Annie', 'Fizz', 'Janna', 'Irelia', 'Karthus', 'Trundle', 'Jax', 'Graves', 'Leona', 'Rengar', 'Amumu', 'Malzahar', 'TahmKench', 'MasterYi', 'Twitch', 'Rumble', 'Nidalee', 'Shyvana', 'Veigar', 'Singed', 'Riven', 'Leblanc', 'Katarina', 'Azir', 'Viktor', 'Poppy', 'Ahri', 'Yorick', 'Aatrox', 'Brand', 'Tryndamere', 'DrMundo', 'Hecarim', 'Braum', 'Nasus', 'Pantheon', 'Elise', 'Velkoz', 'Swain', 'Darius', 'Kayle', 'Thresh', 'Nami', 'Ekko', 'Alistar', 'Galio', 'Warwick', 'Orianna', 'Sona', 'Lux', 'Ryze', 'Jayce', 'Kassadin', 'Volibear', 'Blitzcrank', 'Gangplank', 'Karma', 'XinZhao', 'Ziggs', 'Malphite', 'Tristana', 'Soraka', 'Anivia', 'Xerath', 'Renekton', 'Shen', 'Lissandra', 'Ashe', 'Mordekaiser', 'Talon', 'Zilean', 'JarvanIV', 'Rammus', 'Yasuo', 'Vi', 'Bard', 'Sion', 'Udyr', 'MonkeyKing', 'Akali', 'Diana', 'Varus', 'Kalista', 'Evelynn', 'Teemo', 'Gnar', 'Garen', 'Taric', 'FiddleSticks', 'Chogath', 'Zed', 'Lucian', 'Caitlyn', 'Corki', 'Zyra', 'Syndra', 'Gragas', 'Olaf'],
onRotate: function () {
//on each rotate you make the timeout longer, until it's slow enough
if (this.speed < 600) {
this.speed += 20;
} else {
this.stopRotate();
}
}
});
});
eventFire(document.getElementById('myWords'), 'click');
}
#charset"utf-8";
.wordsrotator_words {
display: inline-block;
position: relative;
white-space:nowrap;
-webkit-transition: width 100ms;
-moz-transition: width 100ms;
-o-transition: width 100ms;
transition: width 100ms;
}
.wordsrotator_words .wordsrotator_wordOut, .wordsrotator_words .wordsrotator_wordIn {
position: relative;
display: inline-block;
-webkit-animation-duration: 50ms;
-webkit-animation-timing-function: ease;
-webkit-animation-fill-mode: both;
-moz-animation-duration: 50ms;
-moz-animation-timing-function: ease;
-moz-animation-fill-mode: both;
-ms-animation-duration: 50ms;
-ms-animation-timing-function: ease;
-ms-animation-fill-mode: both;
}
.wordsrotator_words .wordsrotator_wordOut {
left: 0;
top: 0;
position: absolute;
display: inline-block;
}
.wordsrotator_words .wordsrotator_wordOut span {
width: auto;
position: relative;
}
.wordsrotator_words .wordsrotator_wordIn {
opacity: 0;
}
#-webkit-keyframes fadeInDown {
0% {
opacity: 0;
-webkit-transform: translateY(-20px);
transform: translateY(-20px);
}
100% {
opacity: 1;
-webkit-transform: translateY(0);
transform: translateY(0);
}
}
#keyframes fadeInDown {
0% {
opacity: 0;
-webkit-transform: translateY(-20px);
-ms-transform: translateY(-20px);
transform: translateY(-20px);
}
100% {
opacity: 1;
-webkit-transform: translateY(0);
-ms-transform: translateY(0);
transform: translateY(0);
}
}
.fadeInDown {
-webkit-animation-name: fadeInDown;
animation-name: fadeInDown;
}
#-webkit-keyframes fadeOutDown {
0% {
opacity: 1;
-webkit-transform: translateY(0);
transform: translateY(0);
}
100% {
opacity: 1;
-webkit-transform: translateY(20px);
transform: translateY(20px);
}
}
#keyframes fadeOutDown {
0% {
opacity: 1;
-webkit-transform: translateY(0);
-ms-transform: translateY(0);
transform: translateY(0);
}
100% {
opacity: 1;
-webkit-transform: translateY(20px);
-ms-transform: translateY(20px);
transform: translateY(20px);
}
}
.fadeOutDown {
-webkit-animation-name: fadeOutDown;
animation-name: fadeOutDown;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<div class="container">
<p><span id="myWords"></span>
</p>
<div class="main"> Go!
</div>
</div>