vue v-bind style - smooth changes, not instantly - css

I use "vuex-module-decorators" and dynamically determine the style in this getter:
<div class="viewport":style="viewportStyleVars">...</div>
get viewportStyleVars() {
const tx = -this.viewportRect.x;
const ty = -this.viewportRect.y;
return {
'--translate-x': `${tx}px`,
'--translate-y': `${ty}px`,
}
}
How to make change happen smoothly, not instantly?
I would be grateful for the hints, I am not familiar with the animation.

You just need to add transition in CSS to the div with class .viewport something like:
.viewport{
transition: all 1s linear;
}
The 1s in the transition, is the time, that the action will take, you can tweak this value to something smaller, like 0.1s, if that suits you better.

Related

transitioning between images in vuejs

I want to create a smooth transition between 2 images with a legend.
The images come from an object-array of images.
Because works only on single tags and components, I've created a component to define the image+legend.
<transition>
<home-image :slide="slide" :key="slide"></home-image>
</transition>
The classes I define are like this
.v-enter-active,
.v-leave-active {
transition: opacity 2s ease-in-out;
}
.v-leave,
.v-enter-to {
opacity: 1;
}
.v-enter,
.v-leave-to {
opacity: 0;
}
The new image is returned by a method
updateSlide() {
this.slide = this.entries[ Math.floor( Math.random() * this.entries.length ) ];
}
where entries is my array defined in data
this.slide is updated in regular intervals, every 10seconds like this, which is defined in the created() section
this.updateSlide();
this.uSlide = setInterval( this.updateSlide, 10000);
The code works, in the sense that a new image is loaded in this.slide every 10 seconds.
However, the transitions work only "half-way".
There is no transition fading out: the "old image" disappears and makes way for the new image fading in.
However, what I'd like is a smooth transition from one to the other.
I've tried more than a couple of ideas including using mode="out-in" and "in-out" but nothing works as I want.
What am I overlooking?

How to custom transition for each component?

I have 3 components which I want to show a transition effect when they enter/leave.
There's 1 "main" component and the 2 others show up when you press the associated button. My current sample code is here: https://jsfiddle.net/5aq1k05L/
<transition :name="'step_' + currentView" mode="out-in">
<component :is="currentView"></component>
</transition>
CSS:
.step_componentA-enter-active {
transition: transform 0.4s;
}
.step_componentA-leave-active {
transition: transform 0s;
}
.step_componentA-enter {
transform: translateX(-100%);
}
.step_mainComponent-leave-active {
transition: transform 0.3s;
}
.step_mainComponent-leave-to {
transform: translateX(-100%);
}
.step_componentB-enter-active {
transition: transform 0.4s;
}
.step_componentB-leave-active {
transition: transform 0s;
}
.step_componentB-enter {
transform: translateX(100%);
}
What I am trying to do:
When I click on the "componentA" button, I want that component to slide from the left while "mainComponent" is still visible in the background (not stripped out of elements like now) during the transition.
Same thing for "componentB", except it will slide from the right, and will back to the right when clicking back.
What am I missing? https://jsfiddle.net/5aq1k05L/
Edit 2:
Here a working example with the componentA and componentB that are sliding over the mainComponent -> https://jsfiddle.net/5aq1k05L/8/
I changed the transition to mode:in-out, I added a z-index for each component, and put the components in position:absolute and the app in position:relative
Edit:
Here a working example for your case -> https://jsfiddle.net/5aq1k05L/4/
When you analyse the script step by step, you see that the class when the componentB is leaving is step_mainComponent-leave-active step_mainComponent-leave-to that it makes a classic toggle relative to the mainComponent style.
If you want to use different animations, you should use enter-active-class and leave-active-class etc (see more here) - or put two vars in name, i guess, with a dynamic value relative to the previous view, in the store like currentView is.
It could be like this :
<transition
:name="'step_' + currentView + '_from_' + prevView"
mode="out-in"
>
In the store (you ll need to update the states, mapState, etc.. as well too) :
SET_CURRENT_VIEW(state, new_currentView) {
state.prevView = state.currentView;
state.currentView = new_currentView;
}
Hope it ll help you

Animating div content populated by AngularJS without jQuery

I have a div like this:
<div class="row">
<alert ng-repeat="alert in alerts" type="alert.type" close="closeAlert($index)">{{alert.msg}}</alert>
</div>
I create the alerts in angularjs (and I'm using bootstrap), and while this works great, the visual effect is kind of uncool. As alerts are added to the div, all page content is shoved ungracefully down to make room for the new alert.
I would like to animate the movement so that it is at least smooth. But I don't want to use jQuery. I've played with the CSS3 transitions, but can't seem to get them to work smoothly.
Can I do this where the trigger is a change in div height? How?
you can do it with directives in their link function. i think you wont mind about so small piece on jquery code
myModule.directive('animateRight', function () {
var linker = function (scope, element, attrs) {
var right = function() {
$(this).animate({
{"height": "800px"},
"fast");
})
}
element.on('click', right);
};
return {
restrict:'A',
link:linker
}
})
<div animate-right class="box"></div>
Ok, so I don't like to answer my own question, but this seems like the way to do it...
I used AngularJS 1.2, along with the new ngAnimate module. You need to add angular-animate.js, and reference the animate module, so at the end here's what my modules looked like:
var app = angular.module('tracker', ['$strap.directives', 'ui.bootstrap', 'ngRoute', 'ngAnimate']);
After that, its super simple, and very much CSS3 animations. My alert line ended up with a class repeat-item:
<alert class="repeat-item" type="alert.type" data-ng-repeat="alert in alerts" close="closeAlert($index)">{{alert.msg}}</alert>
And I added some CSS to target that class with the angularjs triggers:
.repeat-item.ng-enter,
.repeat-item.ng-leave {
-webkit-transition: 0.2s linear all;
-moz-transition: 0.2s linear all;
-o-transition: 0.2s linear all;
transition: 0.2s linear all;
}
.repeat-item.ng-enter,
.repeat-item.ng-leave.ng-leave-active {
opacity: 0;
}
.repeat-item.ng-leave,
.repeat-item.ng-enter.ng-enter-active {
opacity: 1;
}
And voila a nice fade in and out animation.
This page really explains very well how to do it. Cheers to Michael Benford for the great link.

Stack CSS Transitions using multiple classes without overriding

I want to use multiple classes to optionally add transitions. Instead of stacking, the previous is getting overridden.
.container { transition: margin .2s; }
.container.t-padding { transition: padding .2s; }
The problem: Property is overridden rather than stacking
http://jsfiddle.net/yz2J8/2/ (The problem)
My temporary solution: Add the previous transition to the rule
.container { transition: margin .2s; }
.container.t-padding { transition: padding .2s, margin .2s; }
http://jsfiddle.net/ZfQcp/6/ (My temporary solution)
What's a better solution??
How can I avoid having to create tons of rules to combine these?
JavaScript could be a cleaner solution as you only need to have 1 CSS rule (the original rule).
If you know the position of you're rule you can do the following.
//First Save The Original Rule
var originalRule = document.styleSheets[0].cssRules[3].cssText;
//Save also the original Hover Rule
var originalHover = document.styleSheets[0].cssRules[4].cssText;
Now originalRule will contain this:
.container{
...
transition: margin .2s;
...
}
And originalHover will contain this:
.container:hover{
...
margin: 10px 0;
...
}
to simply add another transition effect, you can do the following.
document.styleSheets[0].cssRules[3].style.transitionProperty += ",background-color";
document.styleSheets[0].cssRules[4].style.transitionDuration += ",1s";
At this stage, both transitions will take effect.
If you want to only have the original transition, you can either add it manually or simply...
//Delete the Rule
document.styleSheets[0].deleteRule(3);
//Add the Original Rule Back Again
document.styleSheets[0].insertRule(originalRule,3);
If you do so, only the original transition (margin) will take effect, don't forget to also replace the originalHover rule to remove any other effects on hover.
Note:
For Chrome
document.styleSheets[0].cssRules[3].style.webkitTransitionProperty
For Firefox
document.styleSheets[0].cssRules[3].style.mozTransitionProperty
For IE
insertRule and deleteRule do not work, there's these ones instead:
addRule , removeRule
LIVE DEMO FOR CHROME AND FIREFOX

webkit animation not working, # before # in css

The site where I want my animation to work adds #user-space before any of my tags. So, my animation looks like this:
#user-space #-webkit-keyframes animation-name {
from {
style definition ["Before"-state]
}
to {
style definition ["After"-state]
}
And that #user-space declaration is breaking the css statement and animation is not working. Is there any way, to do that otherwise? For exaple put my keyframes insine -webkit-animation: animation-name 1.1s ease infinite; like
webkit-animation: from {
style definition ["Before"-state]
}
to {
style definition ["After"-state]
} 1.1s ease infinite; like
The solution I see is to get around your problem and do it with javascript.
Simply add a new style in your html file (in the header) and add the #-webkit-keyframes animation inside.
There is a thread which explains it well (see accepted solution): Set the webkit-keyframes from/to parameter with JavaScript

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