/**
* File responsive-embeds.js.
*
* Make embeds responsive so they don't overflow their container.
*/
/**
* Add max-width & max-height to <iframe> elements, depending on their width & height props.
*
* @since Twenty Twenty-One 1.0
*
* @return {void}
*/
function twentytwentyoneResponsiveEmbeds() {
var proportion, parentWidth;
// Loop iframe elements.
document.querySelectorAll( 'iframe' ).forEach( function( iframe ) {
// Only continue if the iframe has a width & height defined.
if ( iframe.width && iframe.height ) {
// Calculate the proportion/ratio based on the width & height.
proportion = parseFloat( iframe.width ) / parseFloat( iframe.height );
// Get the parent element's width.
parentWidth = parseFloat( window.getComputedStyle( iframe.parentElement, null ).width.replace( 'px', '' ) );
// Set the max-width & height.
iframe.style.maxWidth = '100%';
iframe.style.maxHeight = Math.round( parentWidth / proportion ).toString() + 'px';
}
} );
}
// Run on initial load.
twentytwentyoneResponsiveEmbeds();
// Run on resize.
window.onresize = twentytwentyoneResponsiveEmbeds;