xobs/lca2020-pay-it-forward
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only force media controls to be visible when necessarry

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This commit is contained in:
Hakim El Hattab 2019-01-29 11:26:46 +01:00
parent 23c2d2795c
commit 2219107c69
1 changed files with 14 additions and 8 deletions
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22
js/reveal.js
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@ -3809,13 +3809,6 @@
_appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' ); _appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' );
_appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' ); _appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' );
// Always show media controls on mobile devices
if( isMobileDevice ) {
toArray( dom.slides.querySelectorAll( 'video, audio' ) ).forEach( function( el ) {
el.controls = true;
} );
}
} }
/** /**
@ -3859,7 +3852,20 @@
// Mobile devices never fire a loaded event so instead // Mobile devices never fire a loaded event so instead
// of waiting, we initiate playback // of waiting, we initiate playback
else if( isMobileDevice ) { else if( isMobileDevice ) {
el.play(); var promise = el.play();
// If autoplay does not work, ensure that the controls are visible so
// that the viewer can start the media on their own
if( promise && typeof promise.catch === 'function' && el.controls === false ) {
promise.catch( function() {
el.controls = true;
// Once the video does start playing, hide the controls again
el.addEventListener( 'play', function() {
el.controls = false;
} );
} );
}
} }
// If the media isn't loaded, wait before playing // If the media isn't loaded, wait before playing
else { else {