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Add animation framework

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This commit is contained in:
Jeremy Likness 2019-11-23 12:07:22 -08:00
parent f37b3371bb
commit 88f7b5cbc2
7 changed files with 96 additions and 4 deletions
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21
css/animations.css Normal file
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@ -0,0 +1,21 @@
@keyframes slide-left {
from { margin-left: 0vw; }
to { margin-left: -100vw; }
}
@keyframes enter-right {
from { margin-left: 100vw; }
to { margin-left: 0vw; }
}
.anim-slide-left-begin {
animation-name: slide-left;
animation-timing-function: ease-in;
animation-duration: 0.5s;
}
.anim-slide-left-end {
animation-name: enter-right;
animation-timing-function: ease-out;
animation-duration: 0.3s;
}

4
css/style.css
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@ -65,7 +65,7 @@ img {
slide-deck div {
height: 80vh;
padding: 1em;
background: lightgray;
border: solid 2px lightgray;
}
@media only screen and (max-width: 960px) {
@ -93,6 +93,6 @@ slide-controls {
float: left;
}
nextslide {
nextslide, transition {
display: none;
}

1
index.html
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@ -11,6 +11,7 @@
content="default-src 'self'; child-src 'none'; connect-src 'self'; font-src 'self'; frame-src 'self'; img-src 'self'; media-src 'self'; object-src 'none'; style-src 'self';">
<link rel="shortcut icon" href="/images/logo.png" type="image/png" />
<link rel="stylesheet" href="css/style.css">
<link rel="stylesheet" href="css/animations.css">
</head>
<body>

42
js/animator.js Normal file
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@ -0,0 +1,42 @@
export class Animator {
constructor() {
this._transitioning = false;
this._begin = null;
this._end = null;
}
get transitioning() {
return this._transitioning;
}
get animationReady() {
return !!this._end;
}
beginAnimation(animationName, host, callback) {
this._transitioning = true;
this._begin = `anim-${animationName}-begin`;
this._end = `anim-${animationName}-end`;
const animationEnd = () => {
host.removeEventListener("animationend", animationEnd);
host.classList.remove(this._begin);
this._transitioning = false;
callback();
}
host.addEventListener("animationend", animationEnd, false);
host.classList.add(this._begin);
}
endAnimation(host) {
this._transitioning = true;
const animationEnd = () => {
host.removeEventListener("animationend", animationEnd);
host.classList.remove(this._end);
this._transitioning = false;
this._begin = null;
this._end = null;
}
host.addEventListener("animationend", animationEnd, false);
host.classList.add(this._end);
}
}

18
js/navigator.js
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@ -1,10 +1,12 @@
import { loadSlides } from "./slideLoader.js"
import { Router } from "./router.js"
import { Animator } from "./animator.js"
class Navigator extends HTMLElement {
constructor() {
super();
this._animator = new Animator();
this._router = new Router();
this._route = this._router.getRoute();
this.slidesChangedEvent = new CustomEvent("slideschanged", {
@ -61,6 +63,9 @@ class Navigator extends HTMLElement {
}
jumpTo(slideIdx) {
if (this._animator.transitioning) {
return;
}
if (slideIdx >= 0 && slideIdx < this.totalSlides) {
this._currentIndex = slideIdx;
this.innerHTML = '';
@ -68,12 +73,23 @@ class Navigator extends HTMLElement {
this._router.setRoute(slideIdx+1);
this._route = this._router.getRoute();
this.dispatchEvent(this.slidesChangedEvent);
if (this._animator.animationReady) {
this._animator.endAnimation(this.querySelector("div"));
}
}
}
next() {
if (this.hasNext) {
this.jumpTo(this.currentIndex + 1);
if (this.currentSlide.transition !== null) {
this._animator.beginAnimation(
this.currentSlide.transition,
this.querySelector("div"),
() => this.jumpTo(this.currentIndex+1));
}
else {
this.jumpTo(this.currentIndex + 1);
}
}
}

11
js/slide.js
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@ -5,6 +5,13 @@ export class Slide {
this._html = document.createElement('div');
this._html.innerHTML = text;
this._title = this._html.querySelectorAll("title")[0].innerText;
const transition = this._html.querySelectorAll("transition");
if (transition.length) {
this._transition = transition[0].innerText;
}
else {
this._transition = null;
}
const hasNext = this._html.querySelectorAll("nextslide");
if (hasNext.length > 0) {
this._nextSlideName = hasNext[0].innerText;
@ -14,6 +21,10 @@ export class Slide {
}
}
get transition() {
return this._transition;
}
get title() {
return this._title;
}

3
slides/001-title.html
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@ -2,4 +2,5 @@
<h1>Vanilla.js: Modern 1st Party JavaScript</h1>
<h2>Jeremy Likness</h2>
<h3>Cloud Advocate, Microsoft</h3>
<nextslide>002-stuff</nextslide>
<nextslide>002-stuff</nextslide>
<transition>slide-left</transition>