scale-down-animation.html
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<!--
@license
Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<link rel="import" href="../../polymer/polymer.html">
<link rel="import" href="../neon-animation-behavior.html">
<link rel="import" href="../web-animations.html">
<!--
`<scale-down-animation>` animates the scale transform of an element from 1 to 0. By default it
scales in both the x and y axes.
Configuration:
```
{
name: 'scale-down-animation',
node: <node>,
axis: 'x' | 'y' | '',
transformOrigin: <transform-origin>,
timing: <animation-timing>
}
```
-->
<script>
Polymer({
is: 'scale-down-animation',
behaviors: [
Polymer.NeonAnimationBehavior
],
configure: function(config) {
var node = config.node;
if (config.transformOrigin) {
this.setPrefixedProperty(node, 'transformOrigin', config.transformOrigin);
}
var scaleProperty = 'scale(0, 0)';
if (config.axis === 'x') {
scaleProperty = 'scale(0, 1)';
} else if (config.axis === 'y') {
scaleProperty = 'scale(1, 0)';
}
this._effect = new KeyframeEffect(node, [
{'transform': 'scale(1,1)'},
{'transform': scaleProperty}
], this.timingFromConfig(config));
return this._effect;
}
});
</script>