<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>reveal.js - Test Scroll View</title>
<link rel="stylesheet" href="../dist/reveal.css">
<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
<script src="../node_modules/qunit/qunit/qunit.js"></script>
</head>
<body style="overflow: auto;">
<div id="qunit"></div>
<div id="qunit-fixture"></div>
<div class="reveal" style="opacity: 0; pointer-events: none;">
<div class="slides">
<section>
<h1>slide 1</h1>
</section>
<section>
<h1>slide 2</h1>
</section>
<section>
<h1>slide 3</h1>
<p class="fragment">fragment 1</p>
<p class="fragment">fragment 2</p>
<p class="fragment">fragment 3</p>
</section>
<section>
<h1>slide 4</h1>
</section>
</div>
</div>
<script src="../dist/reveal.js"></script>
<script>
QUnit.config.testTimeout = 30000;
QUnit.config.reorder = false;
function getScrollHeight() {
return Reveal.getViewportElement().scrollHeight;
}
function getViewportHeight() {
return Reveal.getViewportElement().offsetHeight;
}
Reveal.initialize({ view: 'scroll' }).then( async () => {
QUnit.module( 'Scroll View' );
QUnit.test( 'Activates', assert => {
assert.ok( getScrollHeight() > getViewportHeight(), 'Is overflowing' );
});
QUnit.test( 'Can be toggled via API', assert => {
Reveal.toggleScrollView( false );
assert.ok( getScrollHeight() <= getViewportHeight(), 'Is not overflowing' );
Reveal.toggleScrollView( true );
assert.ok( getScrollHeight() > getViewportHeight(), 'Is overflowing' );
});
QUnit.test( 'Changes present slide when scrolling', assert => {
assert.timeout( 200 );
assert.expect( 2 );
const slides = document.querySelectorAll( '.reveal .slides section' );
assert.ok( slides[0].classList.contains( 'present' ), 'First slide is present' );
Reveal.getViewportElement().scrollTop = getViewportHeight() * 1;
return new Promise( resolve => {
setTimeout(() => {
assert.ok( slides[1].classList.contains( 'present' ), 'Second slide is present' );
resolve();
}, 100);
} );
});
QUnit.test( 'Fires slideschanged event when scrolling', assert => {
assert.timeout( 200 );
assert.expect( 2 );
const slides = document.querySelectorAll( '.reveal .slides section' );
return new Promise( resolve => {
let callback = ( event ) => {
Reveal.off( 'slidechanged', callback );
assert.ok( true, 'slidechanged event fired' );
assert.ok( event.currentSlide.classList.contains( 'present' ), 'slidechanged provides reference to currentSlide' );
resolve();
}
Reveal.on( 'slidechanged', callback );
Reveal.getViewportElement().scrollTop = getViewportHeight() * 2;
});
});
} );
</script>
</body>
</html>