page_theme.module in Page Theme 7

This module allows to use different themes than the site default on specific pages.

File

page_theme.module

<?php

/**
 * @file
 * This module allows to use different themes than the site default on specific
 * pages.
 */

/**
 * Implements hook_help().
 */
function page_theme_help($path, $arg) {
  switch ($path) {
    case 'admin/help#page_theme':
      $output = '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('The Page Theme module is a simple and easy module to use which allows you to use different themes than the site default on specific pages. For more information, see the online handbook entry for <a href="@page_theme">Page Theme module</a>.', array(
        '@page_theme' => 'http://drupal.org/project/page_theme',
      )) . '</p>';
      return $output;
    case 'admin/structure/page-theme':
      $output = '<p>' . t('If pages are several defined, the first theme in the list will be used.') . '</p>';
      $output .= '<p>' . t('Only themes, which are enabled in the <a href="@themes_section">themes section</a>, will be used otherwise the site default theme.', array(
        '@themes_section' => url('admin/appearance'),
      )) . '</p>';
      return $output;
  }
}

/**
 * Implements hook_permission().
 */
function page_theme_permission() {
  $perm = array();
  $perm['administer page theme'] = array(
    'title' => t('Administer page theme settings'),
  );
  return $perm;
}

/**
 * Implements hook_menu().
 */
function page_theme_menu() {
  $menu = array();
  $menu['admin/structure/page-theme'] = array(
    'title' => 'Page theme',
    'description' => 'Configure which theme is used on which pages.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'page_theme_admin_overview',
    ),
    'access arguments' => array(
      'administer page theme',
    ),
    'file' => 'page_theme.admin.inc',
  );
  $menu['admin/structure/page-theme/add'] = array(
    'title' => 'Add theme',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'page_theme_admin_add',
    ),
    'access callback' => 'page_theme_menu_access_add',
    'access arguments' => array(
      'administer page theme',
    ),
    'type' => MENU_LOCAL_ACTION,
    'weight' => 1,
    'file' => 'page_theme.admin.inc',
  );
  $menu['admin/structure/page-theme/manage/%page_theme'] = array(
    'title' => 'Configure theme',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'page_theme_admin_edit',
      4,
    ),
    'access arguments' => array(
      'administer page theme',
    ),
    'file' => 'page_theme.admin.inc',
  );
  $menu['admin/structure/page-theme/manage/%page_theme/configure'] = array(
    'title' => 'Configure theme',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'context' => MENU_CONTEXT_INLINE,
  );
  $menu['admin/structure/page-theme/manage/%page_theme/delete'] = array(
    'title' => 'Delete theme',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'page_theme_admin_delete',
      4,
    ),
    'access arguments' => array(
      'administer page theme',
    ),
    'type' => MENU_LOCAL_TASK,
    'context' => MENU_CONTEXT_NONE,
    'file' => 'page_theme.admin.inc',
  );
  return $menu;
}
function page_theme_menu_access_add($perm) {
  $theme_options = page_theme_get_themes_options();
  return user_access($perm) && count($theme_options) > 1;
}
function page_theme_load($theme) {
  $page_theme = db_query('SELECT theme, pages, status, weight FROM {page_theme} WHERE theme = :theme', array(
    ':theme' => $theme,
  ))
    ->fetchObject();
  return $page_theme;
}

/**
 * Implements hook_theme().
 */
function page_theme_theme() {
  $theme = array();
  $theme['page_theme_admin_overview'] = array(
    'render element' => 'form',
    'file' => 'page_theme.admin.inc',
  );
  return $theme;
}

/**
 * Implements hook_custom_theme().
 */
function page_theme_custom_theme() {
  $path = drupal_strtolower(drupal_get_path_alias($_GET['q']));
  $result = db_query('SELECT theme, pages FROM {page_theme} WHERE status = 1 ORDER BY weight, theme');
  foreach ($result as $page_theme) {
    $pages = drupal_strtolower($page_theme->pages);
    $page_match = drupal_match_path($path, $pages);
    if ($path != $_GET['q']) {
      $page_match = $page_match || drupal_match_path($_GET['q'], $pages);
    }
    if ($page_match) {
      return $page_theme->theme;
    }
  }
}

/**
 *  Helper functions.
 */
function page_theme_get_themes() {
  static $themes = array();
  if (!$themes) {
    $result = db_query('SELECT name, status, info FROM {system} WHERE type = :type', array(
      ':type' => 'theme',
    ));
    foreach ($result as $theme) {
      $theme->info = unserialize($theme->info);
      if (empty($theme->info['hidden']) || !$theme->info['hidden']) {
        $themes[$theme->name] = array(
          'theme' => $theme->name,
          'name' => $theme->info['name'],
          'status' => $theme->status,
        );
      }
    }
  }
  return $themes;
}
function page_theme_get_themes_options() {
  static $options = array();
  if (!$options) {
    $themes = page_theme_get_themes();
    $result = db_query('SELECT theme FROM {page_theme}');
    foreach ($result as $theme) {
      unset($themes[$theme->theme]);
    }
    $options['0'] = '- ' . t('Select theme') . ' -';
    foreach ($themes as $theme) {
      $options[$theme['theme']] = page_theme_get_theme_name($theme['theme'], TRUE);
    }
    natcasesort($options);
  }
  return $options;
}
function page_theme_get_theme_name($theme, $expand = FALSE) {
  $themes = page_theme_get_themes();
  if (isset($themes[$theme])) {
    $name = $expand && !$themes[$theme]['status'] ? t('!theme (disabled)', array(
      '!theme' => $themes[$theme]['name'],
    )) : $themes[$theme]['name'];
  }
  else {
    $name = $expand ? t('!theme (not available)', array(
      '!theme' => $theme,
    )) : $theme;
  }
  return $name;
}

Functions

Name	Description
page_theme_custom_theme	Implements hook_custom_theme().
page_theme_get_themes	Helper functions.
page_theme_get_themes_options
page_theme_get_theme_name
page_theme_help	Implements hook_help().
page_theme_load
page_theme_menu	Implements hook_menu().
page_theme_menu_access_add
page_theme_permission	Implements hook_permission().
page_theme_theme	Implements hook_theme().