WP_Theme_JSON::compute_style_properties( array $styles, array $settings = array(), array $properties = null, array $theme_json = null, string $selector = null, boolean $use_root_padding = null ): array

Description

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$stylesarray

Styles to process.

$settingsarrayoptional

Theme settings.Default: array()

$propertiesarrayoptional

Properties metadata.Default: null

$theme_jsonarrayoptional

Theme JSON array.Default: null

$selectorstringoptional

The style block selector.Default: null

$use_root_paddingbooleanoptional

Whether to add custom properties at root level.Default: null

Return value

array

Returns the modified $declarations.

Performance profile

How much work a call to WP_Theme_JSON::compute_style_properties() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Light

Touches nothing outside its own arguments.

Scaling

Scales with input

The body loops, so the work grows with what you pass in.

Instructions

17–19

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 141.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

0

Nothing in core calls this; the cost is only what you spend yourself.

What one call costs · 1 distinct outcome

One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_Theme_JSON::compute_style_properties() can have, taken from its control-flow graph on PHP 8.5.

This body has more branch combinations than are worth enumerating, so the table covers the outcomes found first rather than every one that exists.

Uses · 4

• str_starts_with()Polyfill for `str_starts_with()` function added in PHP 8.0.
• wp_style_engine_get_styles()Global public interface method to generate styles from a single style object, e.g. the value of a block's attributes.style object or the top level styles in theme.json.
• wp_get_typography_font_size_value()Returns a font-size value based on a given font-size preset.
• static::get_property_value()

Source code

View on Trac ↗View on GitHub ↗

3006	protected static function compute_style_properties( $styles, $settings = array(), $properties = null, $theme_json = null, $selector = null, $use_root_padding = null ) {3007		if ( empty( $styles ) ) {3008			return array();3009		}3010 3011		if ( null === $properties ) {3012			$properties = static::PROPERTIES_METADATA;3013		}3014		$declarations             = array();3015		$root_variable_duplicates = array();3016		$root_style_length        = strlen( '--wp--style--root--' );3017 3018		foreach ( $properties as $css_property => $value_path ) {3019			if ( ! is_array( $value_path ) ) {3020				continue;3021			}3022 3023			$is_root_style = str_starts_with( $css_property, '--wp--style--root--' );3024			if ( $is_root_style && ( static::ROOT_BLOCK_SELECTOR !== $selector || ! $use_root_padding ) ) {3025				continue;3026			}3027 3028			$value = static::get_property_value( $styles, $value_path, $theme_json );3029 3030			/*3031			 * Root-level padding styles don't currently support strings with CSS shorthand values.3032			 * This may change: https://github.com/WordPress/gutenberg/issues/40132.3033			 */3034			if ( '--wp--style--root--padding' === $css_property && is_string( $value ) ) {3035				continue;3036			}3037 3038			if ( $is_root_style && $use_root_padding ) {3039				$root_variable_duplicates[] = substr( $css_property, $root_style_length );3040			}3041 3042			/*3043			 * Processes background image styles.3044			 * If the value is a URL, it will be converted to a CSS `url()` value.3045			 * For uploaded image (images with a database ID), apply size and position defaults,3046			 * equal to those applied in block supports in lib/background.php.3047			 */3048			if ( 'background-image' === $css_property ) {3049				$background_image_input = array();3050				if ( ! empty( $value ) ) {3051					$background_image_input['backgroundImage'] = $value;3052				}3053				$gradient_value = $styles['background']['gradient'] ?? null;3054				if ( ! empty( $gradient_value ) ) {3055					$background_image_input['gradient'] = $gradient_value;3056				}3057				if ( ! empty( $background_image_input ) ) {3058					$background_styles = wp_style_engine_get_styles(3059						array( 'background' => $background_image_input )3060					);3061					$value             = $background_styles['declarations'][ $css_property ] ?? null;3062				}3063			}3064			if ( empty( $value ) && static::ROOT_BLOCK_SELECTOR !== $selector && ! empty( $styles['background']['backgroundImage']['id'] ) ) {3065				if ( 'background-size' === $css_property ) {3066					$value = 'cover';3067				}3068				// If the background size is set to `contain` and no position is set, set the position to `center`.3069				if ( 'background-position' === $css_property ) {3070					$background_size = $styles['background']['backgroundSize'] ?? null;3071					$value           = 'contain' === $background_size ? '50% 50%' : null;3072				}3073			}3074 3075			// Skip if empty and not "0" or value represents array of longhand values.3076			$has_missing_value = empty( $value ) && ! is_numeric( $value );3077			if ( $has_missing_value || is_array( $value ) ) {3078				continue;3079			}3080 3081			// Calculates fluid typography rules where available.3082			if ( 'font-size' === $css_property ) {3083				/*3084				 * wp_get_typography_font_size_value() will check3085				 * if fluid typography has been activated and also

Changelog

Introduced in 5.8.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/class-wp-theme-json.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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