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Homepage: Prevent small images from being used on hero image

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Kelly Dwan 2024-09-12 12:57:15 -04:00
parent dab5cc0c2d
commit e960ee94b7
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1 changed files with 21 additions and 0 deletions
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themes/wporg-5ftf-2024/functions.php
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@ -23,6 +23,7 @@ add_filter( 'the_content', __NAMESPACE__ . '\inject_pledge_content', 1 );
add_filter( 'get_the_excerpt', __NAMESPACE__ . '\inject_pledge_content', 1 );
add_filter( 'search_template_hierarchy', __NAMESPACE__ . '\use_archive_template' );
add_filter( 'body_class', __NAMESPACE__ . '\add_body_class' );
add_filter( 'wp_calculate_image_srcset', __NAMESPACE__ . '\modify_image_srcset', 10, 3 );
// Remove table of contents.
add_filter( 'wporg_handbook_toc_should_add_toc', '__return_false' );
@ -127,3 +128,23 @@ function swap_avatar_for_featured_image( $html, $post_id, $post_thumbnail_id, $s
return $html;
}
add_filter( 'post_thumbnail_html', __NAMESPACE__ . '\swap_avatar_for_featured_image', 10, 5 );
/**
* Filter the sizes attributes for specific images.
*
* @param array $sources One or more arrays of source data to include in the 'srcset'.
* @param array $size_array An array of requested width and height values.
* @param string $image_src The 'src' of the image.
*
* @return array
*/
function modify_image_srcset( $sources, $size_array, $image_src ) {
// The main header image is set with a fixed height, and when the smaller
// screen sizes are used, it scales up to that height causing pixelation.
if ( str_contains( $image_src, '5ftf-wordcamp.jpg' ) ) {
// These sizes are smaller than 260px tall.
unset( $sources[1024], $sources[768], $sources[300] );
}
return $sources;
}