print.module

   1 <?php
   2 /* $Id$ */
   3
   4 /********************************************************************
   5  * Drupal Hooks :: Overview
   6  ********************************************************************/
   7
   8 /**
   9  * Implementation of hook_help().
  10  */
  11 function print_help($section) {
  12   switch ($section) {
  13     case 'admin/modules#description':
  14       $output = t('Allows users to create printer-friendly pages for nodes.');
  15       break;
  16   }
  17
  18   return $output;
  19 }
  20
  21 /**
  22  * Implementation of hook_menu().
  23  */
  24 function print_menu($may_cache) {
  25   $items = array();
  26
  27   if (!$may_cache) {
  28   $items[] = array('path' => 'node/'. arg(1) .'/print', 'title' => t('printer friendly page'),
  29     'callback' => 'print_page', 'access' => user_access('access content'),
  30     'type' => MENU_CALLBACK);
  31   }
  32
  33   return $items;
  34 }
  35
  36 /********************************************************************
  37  * Drupal Hooks :: Core
  38  ********************************************************************/
  39
  40 /**
  41  * Implementation of hook_link().
  42  */
  43 function print_link($type, $node = 0, $main) {
  44   $links = array();
  45
  46   if ($node->type == 'book' && function_exists('book_link'))  {
  47     return;
  48   }
  49
  50   if ($type == 'node' && variable_get('print_show_link', 1) && $main == 0) {
  51     $links[] = theme('print_link', $node);
  52   }
  53
  54   return $links;
  55 }
  56
  57 function print_settings() {
  58   $output = form_textfield(t('Stylesheet URL'), 'print_css', variable_get('print_css', 'misc/print.css'), 60, 64, t('The URL to your print cascading stylesheet.'));
  59
  60   $field .= form_checkbox(t('A list of the node\'s links at the bottom'), 'print_urls', 1, variable_get('print_urls', 0));
  61   $output .= form_group(t('Print page elements'), $field);
  62   $output .= form_radios(t('Printer friendly page link'), 'print_show_link', variable_get('print_show_link', 1), array(t("Disabled"), t("Enabled")), t("Enable or disable the 'printer friendly page' link for each node. Even if the link is disabled, you can still view the print version of a node by going to 'node/nid/print' where nid is the numeric id of the node."));
  63   $output .= form_textfield(t('Printer friendly page icon'), 'print_icon', variable_get('print_icon', 'misc/print.gif'), 60, 64, t('An optional icon to put in front of the printer friendly page link.'));
  64
  65   return $output;
  66 }
  67
  68 /********************************************************************
  69  * Module Functions :: Controllers
  70  ********************************************************************/
  71
  72 function print_page() {
  73   $nid = arg(1);
  74   if (is_numeric($nid)) {
  75     print_generate($nid);
  76   }
  77 }
  78
  79 /********************************************************************
  80  * Module Functions
  81  ********************************************************************/
  82
  83 /**
  84  * Outputs a printer friendly page.
  85  */
  86 function print_generate($title) {
  87   global $base_url;
  88
  89   /* We can take a node id or a node title */
  90   $node = (is_numeric($title)) ? node_load(array('nid' => $title)) : node_load(array('title' => $title));
  91   if (!$node->title) return false;
  92
  93   $teaser = false;
  94   $page = true;
  95   /* This section is ripped from node_view.
  96      This does everything node_view does except theme the node! */
  97
  98   // Remove the delimiter (if any) that separates the teaser from the body.
  99   // TODO: this strips legitimate uses of '<!--break-->' also.
 100   $node->body = str_replace('<!--break-->', '', $node->body);
 101
 102   // The 'view' hook can be implemented to overwrite the default function
 103   // to display nodes.
 104   if (node_hook($node, 'view'))
 105     node_invoke($node, 'view', $teaser, $page);
 106   else
 107     $node = node_prepare($node, $teaser);
 108   // Allow modules to change $node->body before viewing.
 109   node_invoke_nodeapi($node, 'view', $teaser, $page);
 110
 111   /* End of code stealing from node_view() */
 112
 113   if (variable_get('print_urls', 1)) {
 114
 115     /* Collect links and display them at the bottom of the page. Code once taken from Kjartan Mannes' project.module  */
 116     $pattern = "@href=([\']?[\"]?)([^\"|^\'|^|^>]*)([^>]*)>(.+?)</a>@ise";
 117     $node->body = preg_replace($pattern, "'<u>'.stripslashes('\\4').'</u> ['. print_friendly_urls(stripslashes('\\2')) .']'", $node->body);
 118     $urls = print_friendly_urls();
 119     if (count($urls)) {
 120       $node->pfp_links = '';
 121       $max = count($urls);
 122       for ($i = 0; $i < $max; $i++) {
 123         $node->pfp_links .= '['. ($i + 1) .'] '. $urls[$i] ."<br />\n";
 124       }
 125     }
 126   }
 127
 128   /* Grab and format the src URL */
 129   $node->source_url = $base_url. '/'. url("node/$node->nid");
 130   $node->language = $GLOBALS['locale'];
 131   $node->printcss = variable_get('print_css', 'misc/print.css');
 132
 133   include_once('print.tpl.php');
 134 }
 135
 136 function print_friendly_urls($url = 0) {
 137   global $base_url;
 138   static $urls = array();
 139   if ($url) {
 140     $urls[] = strpos($url, '://') ? $url : $base_url. '/'. url($url);
 141     return count($urls);
 142   }
 143   return $urls;
 144 }
 145
 146 /********************************************************************
 147  * Module Functions :: Themeable Functions
 148  ********************************************************************/
 149
 150 function theme_print_link($node) {
 151   $links = '';
 152   if ($icon = variable_get('print_icon', 1)) {
 153     $links .= l('<img src="'.$icon.'" alt="">', "node/$node->nid/print");
 154   }
 155   $links .= l(t('printer friendly page'), "node/$node->nid/print", array('title' => t('Display a printer friendly page.')));
 156
 157   return $links;
 158 }
 159 ?>