function color_scheme_form_submit

Form submission handler for color_scheme_form().

See also

color_scheme_form_validate()

File

core/modules/color/color.module, line 372

Code

function color_scheme_form_submit($form, FormStateInterface $form_state) {
    // Avoid color settings spilling over to theme settings.
    $color_settings = [
        'theme',
        'palette',
        'scheme',
    ];
    if ($form_state->hasValue('info')) {
        $color_settings[] = 'info';
    }
    foreach ($color_settings as $setting_name) {
        ${$setting_name} = $form_state->getValue($setting_name);
        $form_state->unsetValue($setting_name);
    }
    if (!isset($info)) {
        return;
    }
    $config = \Drupal::configFactory()->getEditable('color.theme.' . $theme);
    // Resolve palette.
    if ($scheme != '') {
        foreach ($palette as $key => $color) {
            if (isset($info['schemes'][$scheme]['colors'][$key])) {
                $palette[$key] = $info['schemes'][$scheme]['colors'][$key];
            }
        }
        $palette += $info['schemes']['default']['colors'];
    }
    // Make sure enough memory is available.
    if (isset($info['base_image'])) {
        // Fetch source image dimensions.
        $source = drupal_get_path('theme', $theme) . '/' . $info['base_image'];
        list($width, $height) = getimagesize($source);
        // We need at least a copy of the source and a target buffer of the same
        // size (both at 32bpp).
        $required = $width * $height * 8;
        // We intend to prevent color scheme changes if there isn't enough memory
        // available.  memory_get_usage(TRUE) returns a more accurate number than
        // memory_get_usage(), therefore we won't inadvertently reject a color
        // scheme change based on a faulty memory calculation.
        $usage = memory_get_usage(TRUE);
        $memory_limit = ini_get('memory_limit');
        $size = Bytes::toInt($memory_limit);
        if (!Environment::checkMemoryLimit($usage + $required, $memory_limit)) {
            \Drupal::messenger()->addError(t('There is not enough memory available to PHP to change this theme\'s color scheme. You need at least %size more. Check the <a href="http://php.net/manual/ini.core.php#ini.sect.resource-limits">PHP documentation</a> for more information.', [
                '%size' => format_size($usage + $required - $size),
            ]));
            return;
        }
    }
    $file_system = \Drupal::service('file_system');
    // Delete old files.
    $files = $config->get('files');
    if (isset($files)) {
        foreach ($files as $file) {
            @$file_system->unlink($file);
        }
    }
    if (isset($file) && ($file = dirname($file))) {
        @\Drupal::service('file_system')->rmdir($file);
    }
    // No change in color config, use the standard theme from color.inc.
    if (implode(',', color_get_palette($theme, TRUE)) == implode(',', $palette)) {
        $config->delete();
        return;
    }
    // Prepare target locations for generated files.
    $id = $theme . '-' . substr(hash('sha256', serialize($palette) . microtime()), 0, 8);
    $paths['color'] = 'public://color';
    $paths['target'] = $paths['color'] . '/' . $id;
    
    /** @var \Drupal\Core\File\FileSystemInterface $file_system */
    $file_system = \Drupal::service('file_system');
    foreach ($paths as $path) {
        $file_system->prepareDirectory($path, FileSystemInterface::CREATE_DIRECTORY);
    }
    $paths['target'] = $paths['target'] . '/';
    $paths['id'] = $id;
    $paths['source'] = drupal_get_path('theme', $theme) . '/';
    $paths['files'] = $paths['map'] = [];
    // Save palette and logo location.
    $config->set('palette', $palette)
        ->set('logo', $paths['target'] . 'logo.svg')
        ->save();
    // Copy over neutral images.
    
    /** @var \Drupal\Core\File\FileSystemInterface $file_system */
    $file_system = \Drupal::service('file_system');
    foreach ($info['copy'] as $file) {
        $base = $file_system->basename($file);
        $source = $paths['source'] . $file;
        try {
            $filepath = $file_system->copy($source, $paths['target'] . $base);
        } catch (FileException $e) {
            $filepath = FALSE;
        }
        $paths['map'][$file] = $base;
        $paths['files'][] = $filepath;
    }
    // Render new images, if image has been provided.
    if (isset($info['base_image'])) {
        _color_render_images($theme, $info, $paths, $palette);
    }
    // Rewrite theme stylesheets.
    $css = [];
    foreach ($info['css'] as $stylesheet) {
        // Build a temporary array with CSS files.
        $files = [];
        if (file_exists($paths['source'] . $stylesheet)) {
            $files[] = $stylesheet;
        }
        foreach ($files as $file) {
            $css_optimizer = new CssOptimizer();
            // Aggregate @imports recursively for each configured top level CSS file
            // without optimization. Aggregation and optimization will be
            // handled by drupal_build_css_cache() only.
            $style = $css_optimizer->loadFile($paths['source'] . $file, FALSE);
            // Return the path to where this CSS file originated from, stripping
            // off the name of the file at the end of the path.
            $css_optimizer->rewriteFileURIBasePath = base_path() . dirname($paths['source'] . $file) . '/';
            // Prefix all paths within this CSS file, ignoring absolute paths.
            $style = preg_replace_callback('/url\\([\'"]?(?![a-z]+:|\\/+)([^\'")]+)[\'"]?\\)/i', [
                $css_optimizer,
                'rewriteFileURI',
            ], $style);
            // Rewrite stylesheet with new colors.
            $style = _color_rewrite_stylesheet($theme, $info, $paths, $palette, $style);
            $base_file = $file_system->basename($file);
            $css[] = $paths['target'] . $base_file;
            _color_save_stylesheet($paths['target'] . $base_file, $style, $paths);
        }
    }
    // Maintain list of files.
    $config->set('stylesheets', $css)
        ->set('files', $paths['files'])
        ->save();
}