I have no trouble adding animation between route. But when I try something simple as follow:
var IntroSection = React.createClass({
render: function(){
return(
<div id = "intro">
<ReactCSSTransitionGroup transitionName="introFirst" transitionAppear={true} transitionAppearTimeout={1300}>
<span key={"hello"}> Hello, </span>
</ReactCSSTransitionGroup>
[...]
</div>
css:
.introFirst-appear{
opacity: 0;
transform: translateX(-250px);
transition: opacity 10s linear;
}
.introFirst-appear.introFirst-appear-active {
opacity: 1;
transform:translateX(0px);
}
Opacity part works perfectly, but the translateX part doesnt work at all. Nothing moved.
the css for the div #intro, doesnt have anything special, only font, text-align, width, float:right
You're only specifying that opacity should be animated with the transition rule. Alos, according to this anwer, the transform property only applies to block level elements. Try doing this:
.introFirst-appear {
/*...*/
display: inline-block;
transition: opacity 10s linear, transform 10s linear;
}
Related
I have a less file that hide and display an element like the following:
.cmp-accordion__panel {
&--hidden {
display: none;
}
&--expanded {
display: block;
-webkit-animation: slide-down 0.5s ease-out;
-moz-animation: slide-down 0.5s ease-out;
}
}
#-webkit-keyframes slide-down {
0% {
opacity: 0;
-webkit-transform: translateY(-5%);
}
100% {
opacity: 1;
-webkit-transform: translateY(0);
}
}
#-moz-keyframes slide-down {
0% {
opacity: 0;
-moz-transform: translateY(-5%);
}
100% {
opacity: 1;
-moz-transform: translateY(0);
}
}
In my JavaScript, I toggle the class name of the element between "cmp-accordion__panel--hidden" and "cmp-accordion__panel--expanded" if the event is triggered. I use keyframe and opacity to animate the transition from "display:none" to "display:block".
However, when I go from "display:block" to "display:none" to hide the element, the effect happens INSTANTLY. What should I add to animate the hiding?
As already said, is not possible animate or transition from display:block; to display: none; but this could be simulated in another way and is not necessary to use CSS animations, simply CSS transitions (in addition, is not necessary anymore to use vendor-prefixes to declare transitions or animations).
Please, look at this working example:
HTML (I inserted a fake content to create an element with a relative big height)
<div class="cmp-accordion__panel--expanded">
b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b<br>b
</div>
LESS
[class*="cmp-accordion__panel"] {
border:solid 1px red;
overflow:hidden;
transition:opacity 0.3s ease-out, max-height 0.8s ease-out;
}
.cmp-accordion__panel {
&--hidden {
max-height:0;
opacity:0;
}
&--expanded {
opacity:1;
max-height:1000px;
}
}
Please note that, thanks to attribute partial value selector I added also some rules that apply to both *--hidden and *--expanded classes (I personally prefer a general class and an addition of a second one in some cases, instead of switching between two, but I did not want to change too much your approach).
The key rule is switching between two values of max-height property, from a 0 value to another "enough big" one. If you effectively know final height of the element you can simply use also height property, but in case of dynamic content, max-height did the trick.
Please note also the presence of overflow:hidden; applied to both classes, to simulate height changes.
Finally, animation effect relies only on a CSS transition applied to opacity and max-height properties, with different timings to enhance effect.
You cannot animate or transition from display: block; to display: none;, so you will need to remove this if you wish to animate it.
To ensure it fades and is removed you should animate the visibilty and opacity attributes.
Alternatively if you are using jQuery you can use the .fadeOut() function.
MDN - CSS Visibility
jQuery - fadeOut()
I can't get -leave animations to work with ReactCSSTransitionGroup. I have the following code:
<ReactCSSTransitionGroup
transitionName="fader"
transitionEnterTimeout={500}
transitionLeaveTimeout={500}>
{React.cloneElement(children, {
key: pathname
})}
</ReactCSSTransitionGroup>
with the following styles:
.fade-enter {
opacity: 0.01;
}
.fade-enter.fade-enter-active {
opacity: 1;
transition: opacity 500ms ease-in;
}
.fade-leave {
opacity: 1;
}
.fade-leave.fade-leave-active {
opacity: 0.01;
transition: opacity 500ms ease-in;
}
If I look at the DOM both the -enter and -leave styles are being applied on route changes but only the -enter styles are animating. If I click rapidly between routes the leave animation does show up, but for previous routes. I.e. if I go A -> B -> A when I get back to A the leave animation will flicker briefly.
Ok, turns out the animation was being applied but the div was offscreen. Oops. When animating routes if you want the previous page to have a leave animation you have to add a position:absolute or something similar to keep it onscreen.
I have a div with a background color and css transitions
#foo {
background-color:rgba(255,0,0,0.9);
-webkit-transition: all 3000ms ease;
-moz-transition: all 3000ms ease;
-o-transition: all 3000ms ease;
transition: all 3000ms ease;
}
I also have a button. When the button is clicked, I would like to
immediately switch the div to transparent background and a final height
create a fade-in effect on background-color property only
To accomplish this, I've created some classes for the div
#foo.transparent {
background-color:transparent;
}
#foo.final {
background-color:rgba(255,0,0,0.9);
height:400px;
}
and apply them to the div with jQuery on click
$('#start').click(function() {
$('#foo').addClass('transparent').addClass('final');
});
Unfortunately, height switches immediately to the final value (this is correct), but the background color doesn't perform the required transition from transparent to final value. What am I missing?
(fiddle)
I think an easier solution might be to use jQuery's fadeIn() effect, like this:
Html:
<button id="start">start animation</button>
<div id="foo">some content</div>
CSS:
#foo {
background-color:rgba(255,0,0,0.9);
}
#foo.final {
height:400px
}
JQuery:
$('#start').click(function() {
console.log('click');
$('#foo').addClass('final').hide().fadeIn();
});
And your updated fiddle: https://jsfiddle.net/aqw4cbss/3/
height is not animatiable. use min-height && max-height instead.
plus the backgrounds in your initial state and final state are the same, so how can it be transitioned from 2 equals state.
jsfiddle
I think you should look into JQuery .animate and .css functions.
$('#foo').css("opacity", "0");
$('#foo').animate({backgroundColor: "green"}, 500);
note: you should specify a default background-color and opacity in the css to transition from.
EDIT: You'll need the JQuery Color plugin in order to make this work (it's very small.)
https://github.com/jquery/jquery-color
I want to use a transform for both scale and translateX, but each with a different timing function. Currently I have it working with absolute positioning instead of translateX, as follows:
transition: transform 500ms cubic-bezier(0.390, -0.600, 1.000, -0.600),
left 500ms cubic-bezier(0.270, 0.875, 0.575, 0.870);
.
left: -50px ;
transform: scale(2,2) ;
How would you rewrite this to achieve the same, but use translateX instead of left ?
In this case, I would probably use a wrapper and transition one of the two transforms for the wrapper and the other one for the element itself.
demo
HTML:
<div class='wrap'>
<div class='el'></div>
</div>
Relevant CSS:
.wrap {
transition: transform .5s cubic-bezier(.39, -.6, 1, -.6);
}
.el {
transition: transform .5s cubic-bezier(.27, .875, .575, .87);
}
.wrap:hover { transform: scale(2,2); }
.wrap:hover .el { transform: translateX(-50px); }
Not sure it's a better idea than simulating a translateX by using left.
Another idea would be not to use a transition, but an animation and set the keyframes such that to obtain the desired effect.
How can i display a easing effect, opening from the left, when the page is open? Like this site: http://focuslabllc.com/
I would use CSS transitions. Take a look at the example I've created http://jsfiddle.net/ZL9m7/1/
Relative CSS is simple as
.container {
opacity: 0.1;
transition: opacity 1s linear;
-webkit-transition: opacity 1s linear; /* Play with timing functions */
-moz-transition: opacity 1s linear;
-o-transition: opacity 1s linear;
}
.container-ease-in {
opacity: 1;
}
And tiny javascript trigger (jQuery for convinience):
$(function() {
$('.container').addClass('container-ease-in');
});
Like in dfsq-answer the animation will be triggered with a class by js (this time without jquery):
window.onload = function() {
var oElement = document.getElementById('content');
oElement.className = oElement.className + ' start_animation';
};
And the css changes the margin and the opacity with transition(-duration):
#content {
...
/* starting status */
margin: 10px 200px 10px 0px;
opacity: 0;
/* now set the animation duration */
transition-duration: 1s;
-moz-transition-duration: 1s;
-webkit-transition-duration: 1s;
-o-transition-duration: 1s;
}
#content.start_animation {
margin: 10px 100px; /* change horizontal margins */
opacity: 1; /* change opacity */
}
Also see this example.
This is the fella who wrote the js for the site you're referencing. I played with CSS as an option for this but ended up just going with jQuery 100%. I'll have a blog post soon about some of the dev aspects of our new site facelift and I'll talk about how we did that. It will inclue some jsFiddle demos etc.
You can hide your content initially (with CSS) and then, once the page content is loaded, use javascript to trigger/run an easing operation to make things visible.
Or, you can start with no content and build the page content with javascript in a way that reveals it with the easing you want.
You can use JQuery animation or YUI transition to achieve this. Hide the div and show it OR set the width to 0 and then animate it to maximum with a specific duration.