template.php

<?php
// $Id: template.php,v 1.4.2.2 2010/04/25 12:53:37 amitaibu Exp $

/**
 * @file
 * Contains theme override functions and preprocess functions for the theme.
 *
 * ABOUT THE TEMPLATE.PHP FILE
 *
 *   The template.php file is one of the most useful files when creating or
 *   modifying Drupal themes. You can add new regions for block content, modify
 *   or override Drupal's theme functions, intercept or make additional
 *   variables available to your theme, and create custom PHP logic. For more
 *   information, please visit the Theme Developer's Guide on Drupal.org:
 *   http://drupal.org/theme-guide
 *
 * OVERRIDING THEME FUNCTIONS
 *
 *   The Drupal theme system uses special theme functions to generate HTML
 *   output automatically. Often we wish to customize this HTML output. To do
 *   this, we have to override the theme function. You have to first find the
 *   theme function that generates the output, and then "catch" it and modify it
 *   here. The easiest way to do it is to copy the original function in its
 *   entirety and paste it here, changing the prefix from theme_ to zen_ninesixty_.
 *   For example:
 *
 *     original: theme_breadcrumb()
 *     theme override: zen_ninesixty_breadcrumb()
 *
 *   where zen_ninesixty is the name of your sub-theme. For example, the
 *   zen_classic theme would define a zen_classic_breadcrumb() function.
 *
 *   If you would like to override any of the theme functions used in Zen core,
 *   you should first look at how Zen core implements those functions:
 *     theme_breadcrumbs()      in zen/template.php
 *     theme_menu_item_link()   in zen/template.php
 *     theme_menu_local_tasks() in zen/template.php
 *
 *   For more information, please visit the Theme Developer's Guide on
 *   Drupal.org: http://drupal.org/node/173880
 *
 * CREATE OR MODIFY VARIABLES FOR YOUR THEME
 *
 *   Each tpl.php template file has several variables which hold various pieces
 *   of content. You can modify those variables (or add new ones) before they
 *   are used in the template files by using preprocess functions.
 *
 *   This makes THEME_preprocess_HOOK() functions the most powerful functions
 *   available to themers.
 *
 *   It works by having one preprocess function for each template file or its
 *   derivatives (called template suggestions). For example:
 *     THEME_preprocess_page    alters the variables for page.tpl.php
 *     THEME_preprocess_node    alters the variables for node.tpl.php or
 *                              for node-forum.tpl.php
 *     THEME_preprocess_comment alters the variables for comment.tpl.php
 *     THEME_preprocess_block   alters the variables for block.tpl.php
 *
 *   For more information on preprocess functions and template suggestions,
 *   please visit the Theme Developer's Guide on Drupal.org:
 *   http://drupal.org/node/223440
 *   and http://drupal.org/node/190815#template-suggestions
 */


/*
 * Add any conditional stylesheets you will need for this sub-theme.
 *
 * To add stylesheets that ALWAYS need to be included, you should add them to
 * your .info file instead. Only use this section if you are including
 * stylesheets based on certain conditions.
 */
/* -- Delete this line if you want to use and modify this code
// Example: optionally add a fixed width CSS file.
if (theme_get_setting('zen_ninesixty_fixed')) {
  drupal_add_css(path_to_theme() . '/layout-fixed.css', 'theme', 'all');
}
// */


/**
 * Implementation of HOOK_theme().
 */
function zen_ninesixty_theme(&$existing, $type, $theme, $path) {
  $hooks = array();
  if (function_exists('zen_theme')) {
    $hooks = zen_theme($existing, $type, $theme, $path);
    // Add your theme hooks like this:
    /*
    $hooks['hook_name_here'] = array( // Details go here );
    */
    // @TODO: Needs detailed comments. Patches welcome!
  }
  return $hooks;
}

/**
 * Override or insert variables into all templates.
 *
 * @param $vars
 *   An array of variables to pass to the theme template.
 * @param $hook
 *   The name of the template being rendered (name of the .tpl.php file.)
 */
function zen_ninesixty_preprocess(&$vars, $hook) {
  // Call Zen's preprocess.
  zen_preprocess($vars, $hook);
}

/**
 * Override or insert variables into the page templates.
 *
 * @param $vars
 *   An array of variables to pass to the theme template.
 * @param $hook
 *   The name of the template being rendered ("page" in this case.)
 */
function zen_ninesixty_preprocess_page(&$vars, $hook) {
  // Make zen-960 aware of IE unlimited CSS module.
  // http://drupal.org/project/unlimited_css
  if (module_exists('unlimited_css')) {
    // $vars['css_alt'] is created by ninexity theme.
    // See ninesixty_preprocess_page().
    $vars['css'] = $vars['css_alt'];
    // Make sure the styles are re-processed.
    unlimited_css_preprocess_page($vars);
  }
}

/**
 * Override or insert variables into the node templates.
 *
 * @param $vars
 *   An array of variables to pass to the theme template.
 * @param $hook
 *   The name of the template being rendered ("node" in this case.)
 */
/* -- Delete this line if you want to use this function
function zen_ninesixty_preprocess_node(&$vars, $hook) {
  $vars['sample_variable'] = t('Lorem ipsum.');
}
// */

/**
 * Override or insert variables into the comment templates.
 *
 * @param $vars
 *   An array of variables to pass to the theme template.
 * @param $hook
 *   The name of the template being rendered ("comment" in this case.)
 */
/* -- Delete this line if you want to use this function
function zen_ninesixty_preprocess_comment(&$vars, $hook) {
  $vars['sample_variable'] = t('Lorem ipsum.');
}
// */

/**
 * Override or insert variables into the block templates.
 *
 * @param $vars
 *   An array of variables to pass to the theme template.
 * @param $hook
 *   The name of the template being rendered ("block" in this case.)
 */
/* -- Delete this line if you want to use this function
function zen_ninesixty_preprocess_block(&$vars, $hook) {
  $vars['sample_variable'] = t('Lorem ipsum.');
}
// */