responsive-videos.js
74 lines
| 1 | import './responsive-videos.css'; |
| 2 | |
| 3 | let resizeTimer; |
| 4 | |
| 5 | /** |
| 6 | * Resize all videos in the document. |
| 7 | */ |
| 8 | function responsiveVideos() { |
| 9 | document.querySelectorAll( '.jetpack-video-wrapper' ).forEach( function ( wrapper ) { |
| 10 | wrapper.querySelectorAll( 'embed, iframe, object' ).forEach( function ( video ) { |
| 11 | let videoMargin = 0; |
| 12 | |
| 13 | const previousSibling = wrapper.previousElementSibling; |
| 14 | if ( |
| 15 | previousSibling && |
| 16 | previousSibling.nodeName === 'P' && |
| 17 | getComputedStyle( previousSibling )[ 'text-align' ] === 'center' |
| 18 | ) { |
| 19 | videoMargin = '0 auto'; |
| 20 | } |
| 21 | |
| 22 | if ( ! video.hasAttribute( 'data-ratio' ) ) { |
| 23 | video.setAttribute( 'data-ratio', ( video.height || 0 ) / ( video.width || 0 ) ); |
| 24 | video.setAttribute( 'data-width', video.width ); |
| 25 | video.setAttribute( 'data-height', video.height ); |
| 26 | video.style.display = 'block'; |
| 27 | video.style.margin = videoMargin; |
| 28 | } |
| 29 | |
| 30 | const videoHeight = video.getAttribute( 'data-height' ); |
| 31 | const videoRatio = video.getAttribute( 'data-ratio' ); |
| 32 | const containerWidth = video.parentElement.clientWidth; |
| 33 | |
| 34 | video.removeAttribute( 'height' ); |
| 35 | video.removeAttribute( 'width' ); |
| 36 | |
| 37 | if ( videoRatio === 'Infinity' ) { |
| 38 | video.style.width = '100%'; |
| 39 | video.style.height = videoHeight + 'px'; |
| 40 | return; |
| 41 | } |
| 42 | |
| 43 | const videoWidth = video.getAttribute( 'data-width' ); |
| 44 | |
| 45 | if ( parseInt( videoWidth, 10 ) > containerWidth ) { |
| 46 | video.style.width = containerWidth + 'px'; |
| 47 | video.style.height = containerWidth * parseFloat( videoRatio ) + 'px'; |
| 48 | } else { |
| 49 | video.style.width = videoWidth + 'px'; |
| 50 | video.style.height = videoHeight + 'px'; |
| 51 | } |
| 52 | } ); |
| 53 | } ); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Initialize event listeners and resize everything straight away. |
| 58 | */ |
| 59 | function init() { |
| 60 | window.addEventListener( 'load', responsiveVideos ); |
| 61 | window.addEventListener( 'resize', function () { |
| 62 | clearTimeout( resizeTimer ); |
| 63 | resizeTimer = setTimeout( responsiveVideos, 500 ); |
| 64 | } ); |
| 65 | window.addEventListener( 'is.post-load', responsiveVideos ); |
| 66 | setTimeout( responsiveVideos ); |
| 67 | } |
| 68 | |
| 69 | if ( document.readyState !== 'loading' ) { |
| 70 | init(); |
| 71 | } else { |
| 72 | document.addEventListener( 'DOMContentLoaded', init ); |
| 73 | } |
| 74 |