167 lines
6.0 KiB
PHP
167 lines
6.0 KiB
PHP
<?php declare(strict_types = 1);
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namespace MailPoet\EmailEditor\Engine;
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use MailPoet\EmailEditor\Engine\Renderer\Renderer;
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use WP_Theme_JSON;
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use WP_Theme_JSON_Resolver;
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/**
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* E-mail editor works with own theme.json which defines settings for the editor and styles for the e-mail.
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* This class is responsible for accessing data defined by the theme.json.
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*/
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class ThemeController {
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private WP_Theme_JSON $coreTheme;
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private WP_Theme_JSON $baseTheme;
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public function __construct() {
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$this->coreTheme = WP_Theme_JSON_Resolver::get_core_data();
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$this->baseTheme = new WP_Theme_JSON((array)json_decode((string)file_get_contents(dirname(__FILE__) . '/theme.json'), true), 'default');
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}
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public function getTheme(): WP_Theme_JSON {
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$theme = new WP_Theme_JSON();
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$theme->merge($this->coreTheme);
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$theme->merge($this->baseTheme);
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if (Renderer::getTheme() !== null) {
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$theme->merge(Renderer::getTheme());
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}
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return apply_filters('mailpoet_email_editor_theme_json', $theme);
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}
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/**
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* @return array{
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* spacing: array{
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* blockGap: string,
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* padding: array{bottom: string, left: string, right: string, top: string}
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* },
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* color: array{
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* background: string
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* },
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* typography: array{
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* fontFamily: string
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* }
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* }
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*/
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public function getStyles(): array {
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return $this->getTheme()->get_data()['styles'];
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}
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public function getSettings(): array {
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$emailEditorThemeSettings = $this->getTheme()->get_settings();
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$siteThemeSettings = WP_Theme_JSON_Resolver::get_theme_data()->get_settings();
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$emailEditorThemeSettings['color']['palette']['theme'] = [];
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if (isset($siteThemeSettings['color']['palette']['theme'])) {
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$emailEditorThemeSettings['color']['palette']['theme'] = $siteThemeSettings['color']['palette']['theme'];
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}
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return $emailEditorThemeSettings;
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}
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public function getStylesheetForRendering($post = null): string {
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$emailThemeSettings = $this->getSettings();
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$cssPresets = '';
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// Font family classes
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foreach ($emailThemeSettings['typography']['fontFamilies']['default'] as $fontFamily) {
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$cssPresets .= ".has-{$fontFamily['slug']}-font-family { font-family: {$fontFamily['fontFamily']}; } \n";
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}
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// Font size classes
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foreach ($emailThemeSettings['typography']['fontSizes']['default'] as $fontSize) {
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$cssPresets .= ".has-{$fontSize['slug']}-font-size { font-size: {$fontSize['size']}; } \n";
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}
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// Color palette classes
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$colorDefinitions = array_merge($emailThemeSettings['color']['palette']['theme'], $emailThemeSettings['color']['palette']['default']);
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foreach ($colorDefinitions as $color) {
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$cssPresets .= ".has-{$color['slug']}-color { color: {$color['color']}; } \n";
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$cssPresets .= ".has-{$color['slug']}-background-color { background-color: {$color['color']}; } \n";
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$cssPresets .= ".has-{$color['slug']}-border-color { border-color: {$color['color']}; } \n";
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}
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// Block specific styles
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$cssBlocks = '';
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$blocks = $this->getTheme()->get_styles_block_nodes();
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foreach ($blocks as $blockMetadata) {
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$cssBlocks .= $this->getTheme()->get_styles_for_block($blockMetadata);
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}
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// Element specific styles
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// Because the section styles is not a part of the output the `get_styles_block_nodes` method, we need to get it separately
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if ($post) {
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$postTheme = (array)get_post_meta($post->ID, 'mailpoet_email_theme', true);
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$postStyles = (array)($postTheme['styles'] ?? []);
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$postElements = $postStyles['elements'] ?? [];
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} else {
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$postElements = [];
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}
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$jsonElements = $this->getTheme()->get_raw_data()['styles']['elements'] ?? [];
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$elementsStyles = array_merge_recursive((array)$jsonElements, (array)$postElements);
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$cssElements = '';
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foreach ($elementsStyles as $key => $elementsStyle) {
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$selector = $key;
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if ($key === 'heading') {
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$selector = 'h1, h2, h3, h4, h5, h6';
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}
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if ($key === 'link') {
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// Target direct decendants of blocks to avoid styling buttons. :not() is not supported by the inliner.
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$selector = 'p > a, div > a, li > a';
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}
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if ($key === 'button') {
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$selector = '.wp-block-button';
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}
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$cssElements .= wp_style_engine_get_styles($elementsStyle, ['selector' => $selector])['css'];
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}
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$result = $cssPresets . $cssBlocks . $cssElements;
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// Because font-size can by defined by the clamp() function that is not supported in the e-mail clients, we need to replace it to the value.
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// Regular expression to match clamp() function and capture its max value
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$pattern = '/clamp\([^,]+,\s*[^,]+,\s*([^)]+)\)/';
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// Replace clamp() with its maximum value
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$result = (string)preg_replace($pattern, '$1', $result);
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return $result;
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}
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public function translateSlugToFontSize(string $fontSize): string {
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$settings = $this->getSettings();
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foreach ($settings['typography']['fontSizes']['default'] as $fontSizeDefinition) {
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if ($fontSizeDefinition['slug'] === $fontSize) {
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return $fontSizeDefinition['size'];
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}
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}
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return $fontSize;
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}
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public function translateSlugToColor(string $colorSlug): string {
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$settings = $this->getSettings();
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$colorDefinitions = array_merge($settings['color']['palette']['theme'], $settings['color']['palette']['default']);
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foreach ($colorDefinitions as $colorDefinition) {
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if ($colorDefinition['slug'] === $colorSlug) {
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return strtolower($colorDefinition['color']);
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}
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}
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return $colorSlug;
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}
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public function getVariablesValuesMap(): array {
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$variablesCss = $this->getTheme()->get_stylesheet(['variables']);
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$map = [];
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// Regular expression to match CSS variable definitions
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$pattern = '/--(.*?):\s*(.*?);/';
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if (preg_match_all($pattern, $variablesCss, $matches, PREG_SET_ORDER)) {
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foreach ($matches as $match) {
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// '--' . $match[1] is the variable name, $match[2] is the variable value
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$map['--' . $match[1]] = $match[2];
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}
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}
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return $map;
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}
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}
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