Astra_Ext_Advanced_Headers_Markup::adv_replace_header_logo_attr( array $attr, object $attachment, sting $size )

		public function adv_replace_header_logo_attr( $attr, $attachment, $size ) {

			$custom_logo_id = Astra_Ext_Advanced_Headers_Loader::astra_advanced_headers_design_option( 'logo-id' );

			if ( $custom_logo_id == $attachment->ID ) {

				$attach_data = array();
				$attach_data = wp_get_attachment_image_src( $attachment->ID, 'ast-adv-header-logo-size' );
				if ( isset( $attach_data[0] ) ) {
					$attr['src'] = $attach_data[0];
				}

				$file_type      = wp_check_filetype( $attr['src'] );
				$file_extension = $file_type['ext'];

				if ( 'svg' == $file_extension ) {
					$attr['width']  = '100%';
					$attr['height'] = '100%';
					$attr['class']  = 'astra-logo-svg';
				}

				$diff_retina_logo = Astra_Ext_Advanced_Headers_Loader::astra_advanced_headers_layout_option( 'diff-header-retina-logo' );

				if ( 'enabled' === $diff_retina_logo ) {

					$custom_logo = $attr['src'];
					$retina_logo = Astra_Ext_Advanced_Headers_Loader::astra_advanced_headers_design_option( 'retina-logo-url' );

					$attr['srcset'] = '';

					if ( '' !== $retina_logo ) {

						if ( astra_check_is_ie() ) {
							// Replace header logo url to retina logo url.
							$attr['src'] = $retina_logo;
						}

						$attr['srcset'] = $custom_logo . ' 1x, ' . $retina_logo . ' 2x';
					}
				}
			}

			return $attr;
		}