WordPress · felixarntz · Oct 7, 2022 · Sep 19, 2022 · Sep 19, 2022 · Sep 21, 2022
diff --git a/modules/images/webp-uploads/helper.php b/modules/images/webp-uploads/helper.php
@@ -20,6 +20,14 @@ function webp_uploads_get_upload_image_mime_transforms() {
 		'image/webp' => array( 'image/webp' ),
 	);
 
+	// Check setting for whether to generate both JPEG and WebP.
+	if ( true === (bool) get_option( 'perflab_generate_webp_and_jpeg' ) ) {
+		$default_transforms = array(
+			'image/jpeg' => array( 'image/jpeg', 'image/webp' ),
+			'image/webp' => array( 'image/webp', 'image/jpeg' ),
+		);
+	}
+
 	/**
 	 * Filter to allow the definition of a custom mime types, in which a defined mime type
 	 * can be transformed and provide a wide range of mime types.

diff --git a/modules/images/webp-uploads/load.php b/modules/images/webp-uploads/load.php
@@ -14,6 +14,7 @@
 require_once __DIR__ . '/helper.php';
 require_once __DIR__ . '/rest-api.php';
 require_once __DIR__ . '/image-edit.php';
+require_once __DIR__ . '/settings.php';
 
 /**
  * Hook called by `wp_generate_attachment_metadata` to create the `sources` property for every image

diff --git a/modules/images/webp-uploads/settings.php b/modules/images/webp-uploads/settings.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * Settings for the WebP Uploads module.
+ *
+ * @package performance-lab
+ * @since n.e.x.t
+ */
+
+/**
+ * Registers setting for generating both JPEG and WebP versions for image uploads.
+ *
+ * @since n.e.x.t
+ */
+function webp_uploads_register_media_settings_field() {
+	register_setting(
+		'media',
+		'perflab_generate_webp_and_jpeg',
+		array(
+			'type'         => 'boolean',
+			'default'      => false,
+			'show_in_rest' => false,
+		)
+	);
+}
+add_action( 'init', 'webp_uploads_register_media_settings_field' );
+
+/**
+ * Adds media settings field for the 'perflab_generate_webp_and_jpeg' setting.
+ *
+ * @since n.e.x.t
+ */
+function webp_uploads_add_media_settings_field() {
+	// Add settings field.
+	add_settings_field(
+		'perflab_generate_webp_and_jpeg',
+		__( 'Generate WebP and JPEG', 'performance-lab' ),
+		'webp_uploads_generate_webp_jpeg_setting_callback',
+		'media',
+		'uploads',
+		array( 'class' => 'perflab-generate-webp-and-jpeg' )
+	);
+}
+add_action( 'admin_init', 'webp_uploads_add_media_settings_field' );
+
+/**
+ * Renders the settings field for the 'perflab_generate_webp_and_jpeg' setting.
+ *
+ * @since n.e.x.t
+ */
+function webp_uploads_generate_webp_jpeg_setting_callback() {
+	?>
+	</td>
+	<td class="td-full">
+		<label for="perflab_generate_webp_and_jpeg">
+			<input name="perflab_generate_webp_and_jpeg" type="checkbox" id="perflab_generate_webp_and_jpeg" aria-describedby="perflab_generate_webp_and_jpeg_description" value="1"<?php checked( '1', get_option( 'perflab_generate_webp_and_jpeg' ) ); ?> />
+			<?php esc_html_e( 'Generate JPEG files in addition to WebP', 'performance-lab' ); ?>
+		</label>
+		<p class="description" id="perflab_generate_webp_and_jpeg_description"><?php esc_html_e( 'Enabling JPEG in addition to WebP can improve compatibility, but will effectively double the filesystem storage use of your images.', 'performance-lab' ); ?></p>
+	<?php
+}
+
+/**
+ * Adds custom style for media settings.
+ *
+ * @since n.e.x.t
+ */
+function webp_uploads_media_setting_style() {
+	?>
+	<style>
+	.form-table .perflab-generate-webp-and-jpeg th,
+	.form-table .perflab-generate-webp-and-jpeg td:not(.td-full) {
+		display: none;
+	}
+	</style>
+	<?php
+}
+add_action( 'admin_head-options-media.php', 'webp_uploads_media_setting_style' );
diff --git a/tests/modules/images/webp-uploads/helper-tests.php b/tests/modules/images/webp-uploads/helper-tests.php
@@ -420,6 +420,28 @@ function () {
 		$this->assertSame( array( 'image/jpeg' => array( 'image/jpeg', 'image/webp' ) ), $transforms );
 	}
 
+	/**
+	 * Returns JPG and WebP transforms array when perflab_generate_webp_and_jpeg option is true.
+	 *
+	 * @test
+	 */
+	public function it_should_return_jpeg_and_webp_transforms_when_option_generate_webp_and_jpeg_set() {
+		remove_all_filters( 'webp_uploads_get_upload_image_mime_transforms' );
+
+		update_option( 'perflab_generate_webp_and_jpeg', true );
+
+		$transforms = webp_uploads_get_upload_image_mime_transforms();
+
+		$this->assertIsArray( $transforms );
+		$this->assertSame(
+			array(
+				'image/jpeg' => array( 'image/jpeg', 'image/webp' ),
+				'image/webp' => array( 'image/webp', 'image/jpeg' ),
+			),
+			$transforms
+		);
+	}
+
 	/**
 	 * @dataProvider data_provider_image_filesize
 	 *

diff --git a/tests/modules/images/webp-uploads/load-tests.php b/tests/modules/images/webp-uploads/load-tests.php
@@ -108,6 +108,37 @@ public function it_should_create_jpeg_and_webp_for_jpeg_images_if_opted_in() {
 		}
 	}
 
+	/**
+	 * Create JPEG and WebP for JPEG images, if perflab_generate_webp_and_jpeg option set.
+	 *
+	 * @test
+	 */
+	public function it_should_create_jpeg_and_webp_for_jpeg_images_if_generate_webp_and_jpeg_set() {
+		update_option( 'perflab_generate_webp_and_jpeg', true );
+
+		$attachment_id = $this->factory->attachment->create_upload_object( TESTS_PLUGIN_DIR . '/tests/testdata/modules/images/leafs.jpg' );
+
+		// There should be JPEG and WebP sources for the full image.
+		$this->assertImageHasSource( $attachment_id, 'image/jpeg' );
+		$this->assertImageHasSource( $attachment_id, 'image/webp' );
+
+		$metadata = wp_get_attachment_metadata( $attachment_id );
+
+		// The full image should be a JPEG.
+		$this->assertArrayHasKey( 'file', $metadata );
+		$this->assertStringEndsWith( $metadata['sources']['image/jpeg']['file'], $metadata['file'] );
+		$this->assertStringEndsWith( $metadata['sources']['image/jpeg']['file'], get_attached_file( $attachment_id ) );
+
+		// The post MIME type should be JPEG.
+		$this->assertSame( 'image/jpeg', get_post_mime_type( $attachment_id ) );
+
+		// There should be JPEG and WebP sources for all sizes.
+		foreach ( array_keys( $metadata['sizes'] ) as $size_name ) {
+			$this->assertImageHasSizeSource( $attachment_id, $size_name, 'image/jpeg' );
+			$this->assertImageHasSizeSource( $attachment_id, $size_name, 'image/webp' );
+		}
+	}
+
 	/**
 	 * Don't create the sources property if no transform is provided.
 	 *

diff --git a/uninstall.php b/uninstall.php
@@ -38,4 +38,5 @@
  */
 function perflab_delete_plugin_option() {
 	delete_option( 'perflab_modules_settings' );
+	delete_option( 'perflab_generate_webp_and_jpeg' );
 }