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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 Polymer('viewer-toolbar', { |
| 6 fadingIn: false, |
| 7 timerId_: undefined, |
| 8 inInitialFadeIn_: false, |
| 9 ready: function() { |
| 10 this.mousemoveCallback = function(e) { |
| 11 var rect = this.getBoundingClientRect(); |
| 12 if (e.clientX >= rect.left && e.clientX <= rect.right && |
| 13 e.clientY >= rect.top && e.clientY <= rect.bottom) { |
| 14 this.fadingIn = true; |
| 15 // If we hover over the toolbar, cancel the initial fade in. |
| 16 if (this.inInitialFadeIn_) |
| 17 this.inInitialFadeIn_ = false; |
| 18 } else { |
| 19 // Initially we want to keep the toolbar up for a longer period. |
| 20 if (!this.inInitialFadeIn_) |
| 21 this.fadingIn = false; |
| 22 } |
| 23 }.bind(this); |
| 24 }, |
| 25 attached: function() { |
| 26 this.parentNode.addEventListener('mousemove', this.mousemoveCallback); |
| 27 }, |
| 28 detached: function() { |
| 29 this.parentNode.removeEventListener('mousemove', this.mousemoveCallback); |
| 30 }, |
| 31 initialFadeIn: function() { |
| 32 this.inInitialFadeIn_ = true; |
| 33 this.fadeIn(); |
| 34 this.fadeOutAfterDelay(6000); |
| 35 }, |
| 36 fadingInChanged: function() { |
| 37 if (this.fadingIn) { |
| 38 this.fadeIn(); |
| 39 } else { |
| 40 if (this.timerId_ === undefined) |
| 41 this.fadeOutAfterDelay(3000); |
| 42 } |
| 43 }, |
| 44 fadeIn: function() { |
| 45 this.style.opacity = 1; |
| 46 clearTimeout(this.timerId_); |
| 47 this.timerId_ = undefined; |
| 48 }, |
| 49 fadeOutAfterDelay: function(delay) { |
| 50 this.timerId_ = setTimeout( |
| 51 function() { |
| 52 this.style.opacity = 0; |
| 53 this.timerId_ = undefined; |
| 54 this.inInitialFadeIn_ = false; |
| 55 }.bind(this), delay); |
| 56 } |
| 57 }); |
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