Use original image to generate all additional image format sub-sizes

modules/images/webp-uploads/load.php

@@ -190,16 +190,16 @@ function webp_uploads_generate_image_size( $attachment_id, $size, $mime ) {
 		'crop'   => false,
 	);
 
-	if ( isset( $metadata['sizes'][ $size ]['width'] ) ) {
-		$size_data['width'] = $metadata['sizes'][ $size ]['width'];
-	} elseif ( isset( $sizes[ $size ]['width'] ) ) {
+	if ( isset( $sizes[ $size ]['width'] ) ) {
 		$size_data['width'] = $sizes[ $size ]['width'];
+	} elseif ( isset( $metadata['sizes'][ $size ]['width'] ) ) {
+		$size_data['width'] = $metadata['sizes'][ $size ]['width'];
 	}
 
-	if ( isset( $metadata['sizes'][ $size ]['height'] ) ) {
-		$size_data['height'] = $metadata['sizes'][ $size ]['height'];
-	} elseif ( isset( $sizes[ $size ]['height'] ) ) {
+	if ( isset( $sizes[ $size ]['height'] ) ) {
 		$size_data['height'] = $sizes[ $size ]['height'];
+	} elseif ( isset( $metadata['sizes'][ $size ]['height'] ) ) {
+		$size_data['height'] = $metadata['sizes'][ $size ]['height'];
 	}
 
 	if ( isset( $sizes[ $size ]['crop'] ) ) {
@@ -258,11 +258,11 @@ function webp_uploads_get_supported_image_mime_transforms() {
  * @return array|WP_Error An array with the file and filesize if the image was created correctly otherwise a WP_Error
  */
 function webp_uploads_generate_additional_image_source( $attachment_id, array $size_data, $mime, $destination_file_name = null ) {
-	$image_path = get_attached_file( $attachment_id );
+	$image_path = wp_get_original_image_path( $attachment_id );
 
 	// File does not exist.
 	if ( ! file_exists( $image_path ) ) {
-		return new WP_Error( 'image_file_size_not_found', __( 'The provided size does not have a valid image file.', 'performance-lab' ) );
+		return new WP_Error( 'original_image_file_not_found', __( 'The original image file does not exists, subsizes are created out of the original image.', 'performance-lab' ) );
 	}
 
 	$editor = wp_get_image_editor( $image_path );
@@ -288,6 +288,12 @@ function webp_uploads_generate_additional_image_source( $attachment_id, array $s
 		return new WP_Error( 'image_wrong_dimensions', __( 'At least one of the dimensions must be a positive number.', 'performance-lab' ) );
 	}
 
+	$image_meta = wp_get_attachment_metadata( $attachment_id );
+	// If stored EXIF data exists, rotate the source image before creating sub-sizes.
+	if ( ! empty( $image_meta['image_meta'] ) ) {
+		$editor->maybe_exif_rotate();
+	}
+
 	$editor->resize( $width, $height, $crop );
 
 	if ( null === $destination_file_name ) {

tests/modules/images/webp-uploads/webp-uploads-test.php

@@ -206,7 +206,7 @@ public function it_should_prevent_to_create_an_image_size_when_attached_file_doe
 
 		$result = webp_uploads_generate_image_size( $attachment_id, 'medium', 'image/webp' );
 		$this->assertTrue( is_wp_error( $result ) );
-		$this->assertSame( 'image_file_size_not_found', $result->get_error_code() );
+		$this->assertSame( 'original_image_file_not_found', $result->get_error_code() );
 	}
 
 	/**
@@ -722,4 +722,33 @@ public function it_should_create_a_file_in_the_specified_location_with_the_speci
 		$this->assertStringEndsWith( 'image.webp', $result['file'] );
 		$this->assertFileExists( '/tmp/image.webp' );
 	}
+
+	/**
+	 * Use the original image to generate all the image sizes
+	 *
+	 * @test
+	 */
+	public function it_should_use_the_original_image_to_generate_all_the_image_sizes() {
+		// Use a 1500 threshold.
+		add_filter(
+			'big_image_size_threshold',
+			function () {
+				return 1500;
+			}
+		);
+
+		$attachment_id = $this->factory->attachment->create_upload_object( TESTS_PLUGIN_DIR . '/tests/testdata/modules/images/paint.jpeg' );
+		$metadata      = wp_get_attachment_metadata( $attachment_id );
+
+		$this->assertArrayHasKey( '1536x1536', $metadata['sizes'] );
+		foreach ( $metadata['sizes'] as $size ) {
+			$this->assertStringContainsString( $size['width'], $size['sources']['image/webp']['file'] );
+			$this->assertStringContainsString( $size['height'], $size['sources']['image/webp']['file'] );
+			$this->assertStringContainsString(
+				// Remove the extension ouf of the file.
+				substr( $size['sources']['image/webp']['file'], 0, -4 ),
+				$size['sources']['image/jpeg']['file']
+			);
+		}
+	}
 }