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Introducing Font Face, a server-side `@font-face` styles generator and printer. tl;dr: * Introduces Font Face. * Deprecates `_wp_theme_json_webfonts_handler()`. **Introduce Font Face** From an array of fonts (i.e. each font-family and its font variations to be processed), it: 1. Validates each `font-face` declaration, i.e. the CSS property and value pairing. If validation fails, processing stops with no font-face styles printed. 3. Generates the `@font-face` CSS for each font-family. 4. Prints the CSS within a `<style id="wp-fonts-local">` element. The entry point into Font Face is through a new global function called `wp_print_font_faces()`, which is automatically called: * when the `'wp_head'` hook runs (for the front-end). * when the `'admin_print_styles'` hook runs (for the back-end). * when `_wp_get_iframed_editor_assets()` runs to inject the `@font-face` styles into the iframed editor. Once called, it gets the fonts from Theme_JSON merged data layer, which includes theme defined fonts and user activated fonts (once the Font Library #59166 is introduced into Core). For classic sites, themes and plugins can directly call `wp_print_font_faces()` and pass their fonts array to it for processing. **Deprecates `_wp_theme_json_webfonts_handler()`.** As Font Face is a direct replacement, the stopgap code in `_wp_theme_json_webfonts_handler()` (introduced in 6.0.0 via [53282]) is deprecated and unused in Core. **Props note:** There's a long multiple year history baked into Font Face, which dates back to the early versions of a web font API (see #46370 and [https://github.com/WordPress/gutenberg/issues/41479 roadmap]. The props list includes those who contributed from those early versions up to this commit. **References:** * #46370 original (Web)Fonts API proposal for registering and enqueuing web fonts. * [https://github.com/WordPress/gutenberg/issues/41479 Gutenberg tracking issue] which includes the evolution from Webfonts API to Fonts API to Font Face. * [53282] / #55567 Added the stopgap code `_wp_theme_json_webfonts_handler()` in 6.0. * [https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face @font-face on mdn web docs] * #59166 Font Library: Font manager for WordPress Follow-up to [53282]. Props aristath, jonoaldersonwp, hellofromTonya, andraganescu, annezazu, antonvlasenko, arena, askdesign, azaozz, bph, bradley2083, colorful-tones, costdev, davidbaumwald, desrosj, dingo_d, djcowan, domainsupport, dryanpress, elmastudio, flixos90, francina, garrett-eclipse, gigitux, grantmkin, grapplerulrich, gziolo, ironprogrammer, jb510, jeffpaul, jeremyyip, jffng, joostdevalk, jorgefilipecosta, juanmaguitar, mamaduka, matveb, mburridge, mitogh, ndiego, ntsekouras, oandregal, ocean90, oglekler, paaljoachim, pagelab, peterwilsoncc, poena, priethor, scruffian, SergeyBiryukov, shiloey, simison, skorasaurus, soean, westonruter, wildworks, zaguiini. Fixes #59165. Built from https://develop.svn.wordpress.org/trunk@56500 git-svn-id: http://core.svn.wordpress.org/trunk@56012 1a063a9b-81f0-0310-95a4-ce76da25c4cd
58 lines
2.3 KiB
PHP
58 lines
2.3 KiB
PHP
<?php
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/**
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* Fonts functions.
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*
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* @package WordPress
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* @subpackage Fonts
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* @since 6.4.0
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*/
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/**
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* Generates and prints font-face styles for given fonts or theme.json fonts.
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*
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* @since 6.4.0
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*
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* @param array[][] $fonts {
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* Optional. The font-families and their font variations. Default empty array.
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*
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* @type string $font-family => array[] $variations {
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* Optional. An associated array of font variations for this font-family.
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* Each variation has the following structure.
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*
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* @type array $font_variation {
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* @type string $font-family The font-family property.
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* @type string|string[] $src The URL(s) to each resource containing the font data.
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* @type string $font_style Optional. The font-style property. Default 'normal'.
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* @type string $font-weight Optional. The font-weight property. Default '400'.
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* @type string $font-display Optional. The font-display property. Default 'fallback'.
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* @type string $ascent-override Optional. The ascent-override property.
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* @type string $descent-override Optional. The descent-override property.
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* @type string $font-stretch Optional. The font-stretch property.
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* @type string $font-variant Optional. The font-variant property.
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* @type string $font-feature-settings Optional. The font-feature-settings property.
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* @type string $font-variation-settings Optional. The font-variation-settings property.
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* @type string $line-gap-override Optional. The line-gap-override property.
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* @type string $size-adjust Optional. The size-adjust property.
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* @type string $unicode-range Optional. The unicode-range property.
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* }
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* }
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* }
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*/
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function wp_print_font_faces( $fonts = array() ) {
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static $wp_font_face = null;
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if ( empty( $fonts ) ) {
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$fonts = WP_Font_Face_Resolver::get_fonts_from_theme_json();
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}
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if ( empty( $fonts ) ) {
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return;
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}
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if ( null === $wp_font_face ) {
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$wp_font_face = new WP_Font_Face();
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}
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$wp_font_face->generate_and_print( $fonts );
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}
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