Media: Introduce wp_img_tag_add_width_and_height_attr() to add dimension attributes to images.
Following up on [48170], this changeset moves the new logic to add missing `img` dimension attributes into a separate function that is run first within `wp_filter_content_tags()`. It also adds a utility function `wp_image_src_get_dimensions()` with logic reused from `wp_image_add_srcset_and_sizes()`, and it ensures that `width` and `height` attributes only get added if both of the attributes are missing on the original `img` tag. This changeset furthermore improves test coverage and separates tests for the different aspects of `img` tag modification. Props azaozz. Fixes #50367. See #44427. git-svn-id: https://develop.svn.wordpress.org/trunk@48237 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Felix Arntz
parent
e85b141183
commit
d8af0369e3
@ -1491,11 +1491,42 @@ function wp_calculate_image_sizes( $size, $image_src = null, $image_meta = null,
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return apply_filters( 'wp_calculate_image_sizes', $sizes, $size, $image_src, $image_meta, $attachment_id );
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}
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/**
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* Determines an image's width and height dimensions based on the source file.
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*
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* @since 5.5.0
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*
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* @param string $image_src The image source file.
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* @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'.
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* @return array|false Array with first element being the width and second element being the height,
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* or false if dimensions cannot be determined.
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*/
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function wp_image_src_get_dimensions( $image_src, $image_meta ) {
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$image_filename = wp_basename( $image_src );
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if ( wp_basename( $image_meta['file'] ) === $image_filename ) {
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return array(
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(int) $image_meta['width'],
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(int) $image_meta['height'],
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);
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}
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foreach ( $image_meta['sizes'] as $image_size_data ) {
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if ( $image_filename === $image_size_data['file'] ) {
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return array(
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(int) $image_size_data['width'],
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(int) $image_size_data['height'],
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);
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}
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}
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return false;
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}
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/**
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* Adds 'srcset' and 'sizes' attributes to an existing 'img' element.
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*
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* @since 4.4.0
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* @since 5.5.0 `width` and `height` are now added if not already present.
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*
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* @see wp_calculate_image_srcset()
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* @see wp_calculate_image_sizes()
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@ -1526,40 +1557,18 @@ function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) {
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return $image;
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}
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$attr = '';
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$width = preg_match( '/ width="([0-9]+)"/', $image, $match_width ) ? (int) $match_width[1] : 0;
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$height = preg_match( '/ height="([0-9]+)"/', $image, $match_height ) ? (int) $match_height[1] : 0;
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if ( ! $width || ! $height ) {
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/*
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* If attempts to parse the size value failed, attempt to use the image meta data to match
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* the image file name from 'src' against the available sizes for an attachment.
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*/
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$image_filename = wp_basename( $image_src );
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if ( wp_basename( $image_meta['file'] ) === $image_filename ) {
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$width = (int) $image_meta['width'];
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$height = (int) $image_meta['height'];
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if ( $width && $height ) {
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$size_array = array( $width, $height );
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} else {
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foreach ( $image_meta['sizes'] as $image_size_data ) {
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if ( $image_filename === $image_size_data['file'] ) {
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$width = (int) $image_size_data['width'];
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$height = (int) $image_size_data['height'];
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break;
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}
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}
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}
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if ( ! $width || ! $height ) {
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$size_array = wp_image_src_get_dimensions( $image_src, $image_meta );
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if ( ! $size_array ) {
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return $image;
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}
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// Add width and height if not present.
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$attr .= ' ' . trim( image_hwstring( $width, $height ) );
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}
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$size_array = array( $width, $height );
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$srcset = wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id );
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if ( $srcset ) {
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@ -1573,19 +1582,17 @@ function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) {
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if ( $srcset && $sizes ) {
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// Format the 'srcset' and 'sizes' string and escape attributes.
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$attr .= sprintf( ' srcset="%s"', esc_attr( $srcset ) );
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$attr = sprintf( ' srcset="%s"', esc_attr( $srcset ) );
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if ( is_string( $sizes ) ) {
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$attr .= sprintf( ' sizes="%s"', esc_attr( $sizes ) );
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}
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}
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if ( empty( $attr ) ) {
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return $image;
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}
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// Add extra attributes to the image markup.
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return preg_replace( '/<img ([^>]+?)[\/ ]*>/', '<img $1' . $attr . ' />', $image );
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}
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return $image;
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}
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/**
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@ -1621,8 +1628,9 @@ function wp_lazy_loading_enabled( $tag_name, $context ) {
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*
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* @since 5.5.0
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*
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* @see wp_img_tag_add_loading_attr()
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* @see wp_img_tag_add_width_and_height_attr()
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* @see wp_img_tag_add_srcset_and_sizes_attr()
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* @see wp_img_tag_add_loading_attr()
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*
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* @param string $content The HTML content to be filtered.
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* @param string $context Optional. Additional context to pass to the filters.
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@ -1676,6 +1684,11 @@ function wp_filter_content_tags( $content, $context = null ) {
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foreach ( $images as $image => $attachment_id ) {
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$filtered_image = $image;
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// Add 'width' and 'height' attributes if applicable.
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if ( $attachment_id > 0 && false === strpos( $filtered_image, ' width=' ) && false === strpos( $filtered_image, ' height=' ) ) {
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$filtered_image = wp_img_tag_add_width_and_height_attr( $filtered_image, $context, $attachment_id );
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}
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// Add 'srcset' and 'sizes' attributes if applicable.
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if ( $attachment_id > 0 && false === strpos( $filtered_image, ' srcset=' ) ) {
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$filtered_image = wp_img_tag_add_srcset_and_sizes_attr( $filtered_image, $context, $attachment_id );
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@ -1723,25 +1736,57 @@ function wp_img_tag_add_loading_attr( $image, $context ) {
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$value = 'lazy';
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}
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// Images should have dimension attributes for the `loading` attribute to be added.
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if ( false === strpos( $image, ' width=' ) || false === strpos( $image, ' height=' ) ) {
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// Images should have source and dimension attributes for the `loading` attribute to be added.
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if ( false === strpos( $image, ' src=' ) || false === strpos( $image, ' width=' ) || false === strpos( $image, ' height=' ) ) {
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return $image;
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}
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$quote = null;
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// Check if the img tag is valid (has `src` attribute) and get the quote character.
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// In almost all cases it will have src and a double quote.
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if ( false !== strpos( $image, ' src="' ) ) {
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$quote = '"';
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} elseif ( preg_match( '/\ssrc\s*=(["\'])/', $image, $matches ) ) {
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$quote = $matches[1];
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return str_replace( '<img', '<img loading="' . esc_attr( $value ) . '"', $image );
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}
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if ( $quote ) {
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$loading = "loading={$quote}{$value}{$quote}";
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return $image;
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}
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return str_replace( '<img', "<img {$loading}", $image );
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/**
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* Adds `width` and `height` attributes to an `img` HTML tag.
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*
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* @since 5.5.0
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*
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* @param string $image The HTML `img` tag where the attribute should be added.
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* @param string $context Additional context to pass to the filters.
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* @param int $attachment_id Image attachment ID.
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* @return string Converted 'img' element with 'width' and 'height' attributes added.
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*/
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function wp_img_tag_add_width_and_height_attr( $image, $context, $attachment_id ) {
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$image_src = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : '';
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list( $image_src ) = explode( '?', $image_src );
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// Return early if we couldn't get the image source.
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if ( ! $image_src ) {
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return $image;
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}
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/**
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* Filters whether to add the missing `width` and `height` HTML attributes to the img tag. Default `true`.
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*
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* Returning anything else than `true` will not add the attributes.
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*
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* @since 5.5.0
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*
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* @param bool $value The filtered value, defaults to `true`.
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* @param string $image The HTML `img` tag where the attribute should be added.
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* @param string $context Additional context about how the function was called or where the img tag is.
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* @param int $attachment_id The image attachment ID.
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*/
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$add = apply_filters( 'wp_img_tag_add_width_and_height_attr', true, $image, $context, $attachment_id );
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if ( true === $add ) {
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$image_meta = wp_get_attachment_metadata( $attachment_id );
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$size_array = wp_image_src_get_dimensions( $image_src, $image_meta );
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if ( $size_array ) {
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$hw = trim( image_hwstring( $size_array[0], $size_array[1] ) );
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return str_replace( '<img', "<img {$hw}", $image );
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}
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}
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@ -1963,9 +1963,8 @@ EOF;
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/**
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* @ticket 33641
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* @ticket 50367
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*/
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function test_wp_filter_content_tags() {
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function test_wp_filter_content_tags_srcset_sizes() {
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$image_meta = wp_get_attachment_metadata( self::$large_id );
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$size_array = $this->_get_image_size_array_from_meta( $image_meta, 'medium' );
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@ -1974,7 +1973,6 @@ EOF;
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// Function used to build HTML for the editor.
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$img = get_image_tag( self::$large_id, '', '', '', 'medium' );
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$img = wp_img_tag_add_loading_attr( $img, 'test' );
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$img_no_size_in_class = str_replace( 'size-', '', $img );
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$img_no_width_height = str_replace( ' width="' . $size_array[0] . '"', '', $img );
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$img_no_width_height = str_replace( ' height="' . $size_array[1] . '"', '', $img_no_width_height );
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@ -1983,12 +1981,10 @@ EOF;
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$img_xhtml = str_replace( ' />', '/>', $img );
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$img_html5 = str_replace( ' />', '>', $img );
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$hwstring = image_hwstring( $size_array[0], $size_array[1] );
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// Manually add srcset and sizes to the markup from get_image_tag().
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$respimg = preg_replace( '|<img ([^>]+) />|', '<img $1 ' . $srcset . ' ' . $sizes . ' />', $img );
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$respimg_no_size_in_class = preg_replace( '|<img ([^>]+) />|', '<img $1 ' . $srcset . ' ' . $sizes . ' />', $img_no_size_in_class );
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$respimg_no_width_height = preg_replace( '|<img ([^>]+) />|', '<img $1 ' . $hwstring . $srcset . ' ' . $sizes . ' />', $img_no_width_height );
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$respimg_no_width_height = preg_replace( '|<img ([^>]+) />|', '<img $1 ' . $srcset . ' ' . $sizes . ' />', $img_no_width_height );
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$respimg_with_sizes_attr = preg_replace( '|<img ([^>]+) />|', '<img $1 ' . $srcset . ' />', $img_with_sizes_attr );
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$respimg_xhtml = preg_replace( '|<img ([^>]+)/>|', '<img $1 ' . $srcset . ' ' . $sizes . ' />', $img_xhtml );
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$respimg_html5 = preg_replace( '|<img ([^>]+)>|', '<img $1 ' . $srcset . ' ' . $sizes . ' />', $img_html5 );
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@ -2000,7 +1996,7 @@ EOF;
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<p>Image, no size class. Should have srcset and sizes.</p>
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%2$s
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<p>Image, no width and height attributes. Should have width, height, srcset and sizes (from matching the file name).</p>
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<p>Image, no width and height attributes. Should have srcset and sizes (from matching the file name).</p>
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%3$s
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<p>Image, no attachment ID class. Should NOT have srcset and sizes.</p>
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@ -2018,7 +2014,14 @@ EOF;
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$content_unfiltered = sprintf( $content, $img, $img_no_size_in_class, $img_no_width_height, $img_no_size_id, $img_with_sizes_attr, $img_xhtml, $img_html5 );
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$content_filtered = sprintf( $content, $respimg, $respimg_no_size_in_class, $respimg_no_width_height, $img_no_size_id, $respimg_with_sizes_attr, $respimg_xhtml, $respimg_html5 );
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// Do not add width, height, and loading.
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add_filter( 'wp_img_tag_add_width_and_height_attr', '__return_false' );
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add_filter( 'wp_img_tag_add_loading_attr', '__return_false' );
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$this->assertSame( $content_filtered, wp_filter_content_tags( $content_unfiltered ) );
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remove_filter( 'wp_img_tag_add_width_and_height_attr', '__return_false' );
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remove_filter( 'wp_img_tag_add_loading_attr', '__return_false' );
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}
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/**
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@ -2032,7 +2035,7 @@ EOF;
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* @ticket 34898
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* @ticket 33641
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*/
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function test_wp_filter_content_tags_wrong() {
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function test_wp_filter_content_tags_srcset_sizes_wrong() {
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$img = get_image_tag( self::$large_id, '', '', '', 'medium' );
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$img = wp_img_tag_add_loading_attr( $img, 'test' );
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@ -2045,7 +2048,7 @@ EOF;
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/**
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* @ticket 33641
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*/
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function test_wp_filter_content_tags_with_preexisting_srcset() {
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function test_wp_filter_content_tags_srcset_sizes_with_preexisting_srcset() {
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// Generate HTML and add a dummy srcset attribute.
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$img = get_image_tag( self::$large_id, '', '', '', 'medium' );
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$img = wp_img_tag_add_loading_attr( $img, 'test' );
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@ -2531,11 +2534,55 @@ EOF;
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$this->assertSame( $expected, $url );
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}
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/**
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* @ticket 50367
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*/
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function test_wp_filter_content_tags_width_height() {
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$image_meta = wp_get_attachment_metadata( self::$large_id );
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$size_array = $this->_get_image_size_array_from_meta( $image_meta, 'medium' );
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$img = get_image_tag( self::$large_id, '', '', '', 'medium' );
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$img_no_width_height = str_replace( ' width="' . $size_array[0] . '"', '', $img );
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$img_no_width_height = str_replace( ' height="' . $size_array[1] . '"', '', $img_no_width_height );
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$img_no_width = str_replace( ' width="' . $size_array[0] . '"', '', $img );
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$img_no_height = str_replace( ' height="' . $size_array[1] . '"', '', $img );
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$hwstring = image_hwstring( $size_array[0], $size_array[1] );
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// Manually add width and height to the markup from get_image_tag().
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$respimg_no_width_height = str_replace( '<img ', '<img ' . $hwstring, $img_no_width_height );
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$content = '
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<p>Image, with width and height. Should NOT be modified.</p>
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%1$s
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<p>Image, no width and height attributes. Should have width, height, srcset and sizes (from matching the file name).</p>
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%2$s
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<p>Image, no width but height attribute. Should NOT be modified.</p>
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%3$s
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<p>Image, no height but width attribute. Should NOT be modified.</p>
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%4$s';
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$content_unfiltered = sprintf( $content, $img, $img_no_width_height, $img_no_width, $img_no_height );
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$content_filtered = sprintf( $content, $img, $respimg_no_width_height, $img_no_width, $img_no_height );
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// Do not add loading, srcset, and sizes.
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add_filter( 'wp_img_tag_add_loading_attr', '__return_false' );
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add_filter( 'wp_img_tag_add_srcset_and_sizes_attr', '__return_false' );
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$this->assertSame( $content_filtered, wp_filter_content_tags( $content_unfiltered ) );
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remove_filter( 'wp_img_tag_add_loading_attr', '__return_false' );
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remove_filter( 'wp_img_tag_add_srcset_and_sizes_attr', '__return_false' );
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}
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/**
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* @ticket 44427
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* @ticket 50367
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*/
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function test_wp_lazy_load_content_media() {
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function test_wp_filter_content_tags_loading_lazy() {
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$image_meta = wp_get_attachment_metadata( self::$large_id );
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$size_array = $this->_get_image_size_array_from_meta( $image_meta, 'medium' );
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@ -2570,18 +2617,20 @@ EOF;
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$content_unfiltered = sprintf( $content, $img, $img_xhtml, $img_html5, $img_eager, $img_no_width_height, $iframe );
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$content_filtered = sprintf( $content, $lazy_img, $lazy_img_xhtml, $lazy_img_html5, $img_eager, $img_no_width_height, $iframe );
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// Do not add srcset and sizes.
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// Do not add width, height, srcset, and sizes.
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add_filter( 'wp_img_tag_add_width_and_height_attr', '__return_false' );
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add_filter( 'wp_img_tag_add_srcset_and_sizes_attr', '__return_false' );
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$this->assertSame( $content_filtered, wp_filter_content_tags( $content_unfiltered ) );
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remove_filter( 'wp_img_tag_add_width_and_height_attr', '__return_false' );
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remove_filter( 'wp_img_tag_add_srcset_and_sizes_attr', '__return_false' );
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}
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/**
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* @ticket 44427
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*/
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function test_wp_lazy_load_content_media_opted_in() {
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function test_wp_filter_content_tags_loading_lazy_opted_in() {
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$img = get_image_tag( self::$large_id, '', '', '', 'medium' );
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$lazy_img = wp_img_tag_add_loading_attr( $img, 'test' );
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@ -2606,7 +2655,7 @@ EOF;
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/**
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* @ticket 44427
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*/
|
||||
function test_wp_lazy_load_content_media_opted_out() {
|
||||
function test_wp_filter_content_tags_loading_lazy_opted_out() {
|
||||
$img = get_image_tag( self::$large_id, '', '', '', 'medium' );
|
||||
|
||||
$content = '
|
||||
@ -2626,13 +2675,13 @@ EOF;
|
||||
}
|
||||
|
||||
/**
|
||||
* @ticket 44427
|
||||
* @ticket 50367
|
||||
*/
|
||||
function test_wp_img_tag_add_loading_attr_single_quote() {
|
||||
$img = "<img src='example.png' alt='' width='300' height='225' />";
|
||||
function test_wp_img_tag_add_loading_attr_without_src() {
|
||||
$img = '<img alt=" width="300" height="225" />';
|
||||
$img = wp_img_tag_add_loading_attr( $img, 'test' );
|
||||
|
||||
$this->assertContains( " loading='lazy'", $img );
|
||||
$this->assertNotContains( ' loading="lazy"', $img );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user