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<title>[35358] trunk/src/wp-includes/media.php: Responsive Images: limit the size of images included in `srcset` attributes.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/35358">35358</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/35358","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>azaozz</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-10-22 19:30:12 +0000 (Thu, 22 Oct 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Responsive Images: limit the size of images included in `srcset` attributes. Introduce `max_srcset_image_width` filter to adjust the limit.
Props joemcgill.
Fixes <a href="https://core.trac.wordpress.org/ticket/34341">#34341</a>.</pre>
<h3>Modified Paths</h3>
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<li><a href="#trunksrcwpincludesmediaphp">trunk/src/wp-includes/media.php</a></li>
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<h3>Diff</h3>
<a id="trunksrcwpincludesmediaphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/media.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/media.php 2015-10-22 19:24:10 UTC (rev 35357)
+++ trunk/src/wp-includes/media.php 2015-10-22 19:30:12 UTC (rev 35358)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -928,6 +928,15 @@
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> $img_edited = preg_match( '/-e[0-9]{13}/', $img_url, $img_edit_hash );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ /**
+ * Filter the maximum width included in a srcset attribute.
+ *
+ * @since 4.4.0
+ *
+ * @param array|string $size Size of image, either array or string.
+ */
+ $max_srcset_width = apply_filters( 'max_srcset_image_width', 1600, $size );
+
</ins><span class="cx" style="display: block; padding: 0 10px"> /*
</span><span class="cx" style="display: block; padding: 0 10px"> * Set up arrays to hold url candidates and matched image sources so
</span><span class="cx" style="display: block; padding: 0 10px"> * we can avoid duplicates without looping through the full sources array
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -945,6 +954,11 @@
</span><span class="cx" style="display: block; padding: 0 10px"> continue;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // Filter out images that are wider than $max_srcset_width.
+ if ( $max_srcset_width && $img['width'] > $max_srcset_width ) {
+ $contiue;
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> $candidate_url = path_join( dirname( $img_url ), $img['file'] );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Calculate the new image ratio.
</span></span></pre>
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