owl/doc/animations.md

🦉 Animations 🦉

Animation is a complex topic. There are many different use cases, and many solutions and technologies. Owl only supports some basic use cases.

Simple CSS effects

Sometimes, using pure CSS is enough. For these use cases, Owl is not really necessary: it just needs to render a DOM element with a specific class. For example:

<a class="btn flash" t-on-click="doSomething">Click</a>

with the following CSS:

btn {
    background-color: gray;
}

.flash {
  transition: background 0.5s;
}

.flash:active {
  background-color: #41454a;
  transition: background 0s;
}

will produce a nice flash effect whenever the user click (or activate with the keyboard) the button.

CSS Transitions (single element)

A more complex situation occurs when we want to transition an element in or out of the page. For example, we may want a fade-in and fade-out effect.

The t-transition directive is here to help us (see QWeb documentation).