adaptivetheme-8.x-3.x-dev/at_core/forms/ext/fonts_submit.php

<?php

/**
 * @file
 * Output formatted CSS for fonts.
 */

use Drupal\Component\Utility\Xss;
use Drupal\Core\File\FileSystemInterface;

/**
 *
 */
function at_core_submit_fonts($values, $generated_files_path) {

  // Websafe fonts.
  if (isset($values['settings_font_websafe'])) {
    $websafe_fonts = explode(PHP_EOL, $values['settings_font_websafe']);
  }
  else {
    $websafe_fonts = '';
  }

  // Local fonts.
  if (isset($values['settings_font_local'])) {
    $local_fonts = "\n\n" . $values['settings_font_local'] . "\n";
  }
  else {
    $local_fonts = '';
  }

  // Elements to apply fonts to.
  $font_elements = font_elements();

  // Fallback family.
  $fallback_font_family = 'sans-serif';
  if (isset($values['settings_font_fallback'])) {
    $fallback_font_family = str_replace('_', '-', $values['settings_font_fallback']);
  }

  // Initialize some variables.
  $fonts = [];
  // 16px default
  $base_size = 16;
  $headings = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'];

  // Inject config settings for web-fonts.
  $values['settings_font_use_google_fonts'] = FALSE;
  $values['settings_font_use_typekit'] = FALSE;

  $font_styles = [];

  foreach ($font_elements as $font_key => $font_values) {

    // Get the selectors for each element.
    $fonts[$font_key]['selectors'] = $font_values['selector'];

    // Reset the selectors variable if we have custom selectors.
    if ($font_key == 'custom_selectors' && !empty($values['settings_font_custom_selectors']) && !empty($values['settings_custom_selectors'])) {
      // ? $values['settings_custom_selectors'] : 'ruby ruby'
      $fonts[$font_key]['selectors'] = $values['settings_custom_selectors'];
    }

    // Size/Line height.
    if (!empty($values['settings_font_size_' . $font_key])) {

      // $base_size = $values['settings_font_size_base'] ? $values['settings_font_size_base'] : $base_size;
      $px_size = $values['settings_font_size_' . $font_key];
      $rem_size = $values['settings_font_size_' . $font_key] / $base_size;

      // line-height multipliers are a bit magical, but "pretty good" defaults.
      $line_height = $values['settings_font_line_height_multiplier_default'];
      if (in_array($font_key, $headings)) {
        $line_height = $values['settings_font_line_height_multiplier_large'];
      }

      if ($font_key == 'base') {
        $fonts[$font_key]['size'] = ' font-size: ' . 100 * ($px_size / $base_size) . '%;';
        $fonts[$font_key]['line_height'] = ' line-height: ' . $line_height . 'em;';
      }
      // All other elements.
      else {
        $fonts[$font_key]['size'] = ' font-size: ' . round($rem_size, 3) . 'rem;';
        $fonts[$font_key]['line_height'] = ' line-height: ' . $line_height . ';';
      }
    }

    // Set font family for each key.
    if (isset($values['settings_font_' . $font_key])) {

      // Websafe.
      if ($values['settings_font_' . $font_key] == 'websafe') {
        if (isset($values['settings_font_websafe_' . $font_key])) {
          if (!empty($websafe_fonts[$values['settings_font_websafe_' . $font_key]])) {
            $websafe_font = $websafe_fonts[$values['settings_font_websafe_' . $font_key]];
            $fonts[$font_key]['family'] = 'font-family: ' . trim($websafe_font) . ';';
          }
          else {
            $fonts[$font_key]['family'] = 'font-family: inherit;';
          }
        }
        else {
          $fonts[$font_key]['family'] = 'font-family: inherit;';
        }
      }

      // Google.
      if ($values['settings_font_' . $font_key] == 'google') {
        if (isset($values['settings_font_google_' . $font_key])) {
          $str_replace_underscores = str_replace('_', ' ', $values['settings_font_google_' . $font_key]);
          $fonts[$font_key]['family'] = 'font-family: "' . trim($str_replace_underscores) . '", ' . trim($fallback_font_family) . ';';
          // Inject settings into the config.
          $values['settings_font_use_google_fonts'] = TRUE;
        }
        else {
          $fonts[$font_key]['family'] = 'font-family: inherit;';
        }
      }

      // Typekit.
      if ($values['settings_font_' . $font_key] == 'typekit') {
        if (!empty($values['settings_font_typekit_' . $font_key])) {
          $str_replace_underscores = str_replace('_', ' ', $values['settings_font_typekit_' . $font_key]);
          $fonts[$font_key]['family'] = 'font-family: "' . trim($str_replace_underscores) . '", ' . trim($fallback_font_family) . ';';
          // Inject settings into the config.
          $values['settings_font_use_typekit'] = TRUE;
        }
        else {
          $fonts[$font_key]['family'] = 'font-family: inherit;';
        }
      }

      // Local fonts.
      if ($values['settings_font_' . $font_key] == 'local') {
        if (!empty($values['settings_font_localfont_' . $font_key])) {
          $fonts[$font_key]['family'] = 'font-family: "' . str_replace('_', ' ', $values['settings_font_localfont_' . $font_key]) . '", ' . trim($fallback_font_family) . ';';
          // Inject settings into the config.
          $values['settings_font_use_localfont'] = TRUE;
        }
        else {
          $fonts[$font_key]['family'] = 'font-family: inherit;';
        }
      }
    }

    // Font smoothing.
    if (isset($values['settings_font_smoothing_' . $font_key]) && $values['settings_font_smoothing_' . $font_key] == 1) {
      $fonts[$font_key]['smoothing'] = ' -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;';
    }
  }

  // Output data to file.
  $output = '';
  if (!empty($fonts)) {
    foreach ($fonts as $font_key => $font_values) {
      if (isset($font_values['family']) || isset($font_values['size'])) {
        $font_style = $font_values['selectors'] . ' { ';

        if (isset($font_values['family'])) {
          $font_style .= str_replace(';;', ';', $font_values['family']);
        }

        if (isset($font_values['size'])) {
          $font_style .= $font_values['size'];
        }

        if (isset($font_values['line_height'])) {
          $font_style .= $font_values['line_height'];
        }

        if (isset($font_values['smoothing'])) {
          $font_style .= $font_values['smoothing'];
        }

        $font_style .= ' }';
        $font_styles[] = $font_style;
      }
    }

    $output = implode("\n", $font_styles) . $local_fonts;
  }

  $output = $output ? Xss::filter($output) : '/** No fonts styles set **/';

  $file_name = 'fonts.css';
  $filepath = "$generated_files_path/$file_name";
  \Drupal::service('file_system')->saveData($output, $filepath, FileSystemInterface::EXISTS_REPLACE);
  /*file_unmanaged_save_data($output, $filepath, FILE_EXISTS_REPLACE);*/
  /*file_save_data($output, $filepath, FileSystemInterface::EXISTS_REPLACE);*/

  // Return modified values to convert to config.
  return $values;
}