color_scheme_form($complete_form, FormStateInterface $form_state, $theme)
Form constructor for the color configuration form for a particular theme.
Parameters
$theme: The machine name of the theme whose color settings are being configured.
See also
File
- core/modules/color/color.module, line 200
- Allows users to change the color scheme of themes.
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | function color_scheme_form($complete_form, FormStateInterface $form_state, $theme) { $info = color_get_info($theme); $info['schemes'][''] = array('title' => t('Custom'), 'colors' => array()); $color_sets = array(); $schemes = array(); foreach ($info['schemes'] as $key => $scheme) { $color_sets[$key] = $scheme['title']; $schemes[$key] = $scheme['colors']; $schemes[$key] += $info['schemes']['default']['colors']; } // See if we're using a predefined scheme. // Note: we use the original theme when the default scheme is chosen. // Note: we use configuration without overrides since this information is used // in a form and therefore without doing this would bleed overrides into // active configuration. Furthermore, color configuration is used to write // CSS to the file system making configuration overrides pointless. $current_scheme = \Drupal::configFactory()->getEditable('color.theme.' . $theme)->get('palette'); foreach ($schemes as $key => $scheme) { if ($current_scheme == $scheme) { $scheme_name = $key; break; } } if (empty($scheme_name)) { if (empty($current_scheme)) { $scheme_name = 'default'; } else { $scheme_name = ''; } } // Add scheme selector. $default_palette = color_get_palette($theme, TRUE); $form['scheme'] = array( '#type' => 'select', '#title' => t('Color set'), '#options' => $color_sets, '#default_value' => $scheme_name, '#attached' => array( 'library' => array( 'color/drupal.color', 'color/admin', ), // Add custom JavaScript. 'drupalSettings' => [ 'color' => [ 'reference' => $default_palette, 'schemes' => $schemes, ], 'gradients' => $info['gradients'], ], ), ); // Add palette fields. Use the configuration if available. $palette = $current_scheme ? : $default_palette; $names = $info['fields']; $form['palette']['#tree'] = TRUE; foreach ($palette as $name => $value) { if (isset($names[$name])) { $form['palette'][$name] = array( '#type' => 'textfield', '#title' => $names[$name], '#value_callback' => 'color_palette_color_value', '#default_value' => $value, '#size' => 8, '#attributes' => array('dir' => LanguageInterface::DIRECTION_LTR), ); } } $form['theme'] = array('#type' => 'value', '#value' => $theme); if (isset($info['#attached'])) { $form['#attached'] = $info['#attached']; unset($info['#attached']); } $form['info'] = array('#type' => 'value', '#value' => $info); return $form;} |
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