| <!-- |
| @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-shared-element-animation-behavior.html"> |
| <link rel="import" href="../web-animations.html"> |
| |
| <!-- |
| `<hero-animation>` is a shared element animation that scales and transform an element such that it |
| appears to be shared between two pages. Use this in `<neon-animated-pages>`. The source page |
| should use this animation in an 'exit' animation and set the `fromPage` configuration property to |
| itself, and the destination page should use this animation in an `entry` animation and set the |
| `toPage` configuration property to itself. They should also define the hero elements in the |
| `sharedElements` property (not a configuration property, see |
| `Polymer.NeonSharedElementAnimatableBehavior`). |
| |
| Configuration: |
| ``` |
| { |
| name: 'hero-animation', |
| id: <shared-element-id>, |
| timing: <animation-timing>, |
| toPage: <node>, /* define for the destination page */ |
| fromPage: <node>, /* define for the source page */ |
| } |
| ``` |
| --> |
| |
| <script> |
| |
| Polymer({ |
| |
| is: 'hero-animation', |
| |
| behaviors: [ |
| Polymer.NeonSharedElementAnimationBehavior |
| ], |
| |
| configure: function(config) { |
| var shared = this.findSharedElements(config); |
| if (!shared) { |
| return; |
| } |
| |
| var fromRect = shared.from.getBoundingClientRect(); |
| var toRect = shared.to.getBoundingClientRect(); |
| |
| var deltaLeft = fromRect.left - toRect.left; |
| var deltaTop = fromRect.top - toRect.top; |
| var deltaWidth = fromRect.width / toRect.width; |
| var deltaHeight = fromRect.height / toRect.height; |
| |
| this._effect = new KeyframeEffect(shared.to, [ |
| {'transform': 'translate(' + deltaLeft + 'px,' + deltaTop + 'px) scale(' + deltaWidth + ',' + deltaHeight + ')'}, |
| {'transform': 'none'} |
| ], this.timingFromConfig(config)); |
| |
| this.setPrefixedProperty(shared.to, 'transformOrigin', '0 0'); |
| shared.to.style.zIndex = 10000; |
| shared.from.style.visibility = 'hidden'; |
| |
| return this._effect; |
| }, |
| |
| complete: function(config) { |
| var shared = this.findSharedElements(config); |
| if (!shared) { |
| return null; |
| } |
| shared.to.style.zIndex = ''; |
| shared.from.style.visibility = ''; |
| } |
| |
| }); |
| |
| </script> |