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João Ventura
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* Displays Printer-friendly versions of Drupal pages.
*/
include_once('print_pdf.pages.inc');
include_once('print_pdf.admin.inc');
define('PRINTPDF_PATH', 'printpdf');
define('PRINT_PDF_LINK_POS_DEFAULT', 'link');
define('PRINT_PDF_SHOW_LINK_DEFAULT', 1);
define('PRINT_PDF_NODE_LINK_VISIBILITY_DEFAULT', 0);
define('PRINT_PDF_NODE_LINK_PAGES_DEFAULT', '');
define('PRINT_PDF_LINK_CLASS_DEFAULT', 'print-pdf');
define('PRINT_PDF_SYS_LINK_VISIBILITY_DEFAULT', 1);
define('PRINT_PDF_SYS_LINK_PAGES_DEFAULT', '');
define('PRINT_PDF_LINK_USE_ALIAS_DEFAULT', 0);
define('PRINT_PDF_BOOK_LINK_DEFAULT', 1);
define('PRINT_PDF_PDF_TOOL_DEFAULT', 0);
define('PRINT_PDF_CONTENT_DISPOSITION_DEFAULT', 2);
define('PRINT_PDF_PAPER_SIZE_DEFAULT', 'A4');
define('PRINT_PDF_PAGE_ORIENTATION_DEFAULT', 'portrait');
define('PRINT_PDF_FONT_FAMILY_DEFAULT', 'dejavusans');
define('PRINT_PDF_FONT_SIZE_DEFAULT', 10);
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define('PRINT_PDF_FILENAME_DEFAULT', '[site-name] - [title] - [mod-yyyy]-[mod-mm]-[mod-dd]');
/**
* Implementation of hook_menu().
*/
function print_pdf_menu($may_cache) {
$items = array();
if ($may_cache) {
$items[] = array(
'path' => PRINTPDF_PATH,
'title' => t('Printer-friendly PDF'),
'callback' => 'print_pdf_controller',
'access' => user_access('access print'),
'type' => MENU_CALLBACK,
);
$items[] = array(
'path' => 'admin/settings/print/pdf',
'title' => t('PDF'),
'callback' => 'drupal_get_form',
'callback arguments' => array('print_pdf_settings'),
'access' => user_access('administer print'),
'weight' => 3,
'type' => MENU_LOCAL_TASK,
);
$items[] = array(
'path' => 'admin/settings/print/pdf/options',
'title' => t('Options'),
'weight' => 1,
'type' => MENU_DEFAULT_LOCAL_TASK,
);
$items[] = array(
'path' => 'admin/settings/print/pdf/strings',
'title' => t('Text strings'),
'callback' => 'drupal_get_form',
'callback arguments' => array('print_pdf_strings_settings'),
'access' => array('administer print'),
'weight' => 2,
'type' => MENU_LOCAL_TASK,
);
}
return $items;
}
/**
* Implementation of hook_block().
*/
function print_pdf_block($op = 'list', $delta = 0, $edit = array()) {
switch ($op) {
case 'list':
$block[0]['info'] = t('Most PDFd');
return $block;
break;
case 'configure':
return '';
case 'save':
return;
case 'view':
switch ($delta) {
case 0:
$block['subject'] = t('Most PDFd');
$result = db_query_range("SELECT path FROM {print_pdf_page_counter} ORDER BY totalcount DESC", 0, 3);
if (db_affected_rows()) {
$block['content'] = '<div class="item-list"><ul>';
while ($obj = db_fetch_object($result)) {
$block['content'] .= '<li>'. l(_print_get_title($obj->path), $obj->path) .'</li>';
}
$block['content'] .= '</ul></div>';
}
break;
}
return $block;
break;
}
}
/**
* Implementation of hook_requirements().
*/
function print_pdf_requirements($phase) {
$requirements = array();
$t = get_t();
switch ($phase) {
// At runtime, make sure that a PDF generation tool is selected
case 'runtime':
$print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
if (empty($print_pdf_pdf_tool)) {
$requirements['print_pdf_tool'] = array(
'title' => $t('PDF version'),
'value' => $t('No PDF tool selected'),
'description' => $t('Please configure it in the <a href="@url">PDF settings page</a>.', array('@url' => url('admin/settings/print/pdf'))),
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'severity' => REQUIREMENT_ERROR,
);
}
break;
}
return $requirements;
}
/**
* Implementation of hook_link().
*/
function print_pdf_link($type, $node = NULL, $teaser = FALSE) {
$print_pdf_link_pos = variable_get('print_pdf_link_pos', array(PRINT_PDF_LINK_POS_DEFAULT => PRINT_PDF_LINK_POS_DEFAULT));
$print_pdf_link_use_alias = variable_get('print_pdf_link_use_alias', PRINT_PDF_LINK_USE_ALIAS_DEFAULT);
$allowed_type = print_pdf_link_allowed(array('type' => $type, 'node' => $node, 'teaser' => $teaser));
if (($allowed_type) && !empty($print_pdf_link_pos['link'])) {
drupal_add_css(drupal_get_path('module', 'print') .'/css/printlinks.css');
$links = array();
$format = theme('print_pdf_format_link');
// Show book link
if ($allowed_type === PRINT_ALLOW_BOOK_LINK) {
$links['book_pdf'] = array('href' => PRINTPDF_PATH .'/book/export/html/'. $node->nid,
'title' => $format['text'],
'attributes' => $format['attributes'],
'html' => $format['html'],
return $links;
}
elseif ($allowed_type === PRINT_ALLOW_NORMAL_LINK) {
$query_arr = $_GET;
if ($type == 'comment') {
$query_arr['comment'] = $node->cid;
}
$query = print_query_string_encode($query_arr, array('q'));
if (empty($query)) $query = NULL;
if ($print_pdf_link_use_alias) {
$path = drupal_get_path_alias('node/'. $node->nid);
}
else {
$path = $node->nid;
}
$links['print_pdf'] = array('href' => PRINTPDF_PATH .'/'. $path,
'title' => $format['text'],
'attributes' => $format['attributes'],
'html' => $format['html'],
'query' => $query,
return $links;
}
}
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else {
return;
}
}
/**
* Implementation of hook_help().
*/
function print_pdf_help($path) {
$print_pdf_link_pos = variable_get('print_pdf_link_pos', array(PRINT_PDF_LINK_POS_DEFAULT => PRINT_PDF_LINK_POS_DEFAULT));
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if (($path !== 'node/%') && !(empty($print_pdf_link_pos['link']) && empty($print_pdf_link_pos['corner']))) {
static $output = FALSE;
if ($output === FALSE) {
$output = TRUE;
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$link = print_pdf_insert_link();
if ($link) {
return "<span class='print-syslink'>$link</span>";
}
}
}
}
/**
* Implementation of hook_nodeapi().
*/
function print_pdf_nodeapi(&$node, $op = 'view', $teaser, $page) {
switch ($op) {
case 'view':
$print_pdf_link_pos = variable_get('print_pdf_link_pos', array(PRINT_PDF_LINK_POS_DEFAULT => PRINT_PDF_LINK_POS_DEFAULT));
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if (($teaser === FALSE) && !empty($print_pdf_link_pos['corner']) &&
(preg_match('!^print!i', $_GET['q']) == 0)) {
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$link = print_pdf_insert_link(NULL, $node);
if ($link) {
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$node->content['print_links']['#value'] = preg_replace('!</span>$!', $link .'</span>', $node->content['print_links']['#value']);
_print_pdf_set_node_fields($node);
if (user_access('administer print') || user_access('node-specific print configuration')) {
_print_pdf_node_conf_modify($node->nid, $node->print_pdf_display, $node->print_pdf_display_comment, $node->print_pdf_display_urllist);
}
break;
case 'delete':
db_query("DELETE FROM {print_pdf_node_conf} WHERE nid = %d", $node->nid);
db_query("DELETE FROM {print_pdf_page_counter} WHERE path = '%s'", $node->path);
break;
}
}
/**
* Implementation of hook_form_alter().
*/
function print_pdf_form_alter($form_id, &$form) {
// Add the node-type settings option to activate the PDF version link
if ((user_access('administer print') || user_access('node-specific print configuration')) && (($form_id == 'node_type_form') ||
(isset($form['type']) && isset($form['#node']) && $form['type']['#value'] .'_node_form' == $form_id))) {
$form['print']['pdf_label'] = array(
'#type' => 'markup',
'#value' => '<p><strong>'. t('PDF version') .'</strong></p>',
);
$form['print']['print_pdf_display'] = array(
'#type' => 'checkbox',
);
$form['print']['print_pdf_display_comment'] = array(
'#type' => 'checkbox',
'#title' => t('Show link in individual comments'),
$form['print']['print_pdf_display_urllist'] = array(
'#type' => 'checkbox',
'#title' => t('Show Printer-friendly URLs list'),
);
if ($form_id == 'node_type_form') {
$form['print']['print_pdf_display']['#default_value'] = variable_get('print_pdf_display_'. $form['#node_type']->type, PRINT_TYPE_SHOW_LINK_DEFAULT);
$form['print']['print_pdf_display_comment']['#default_value'] = variable_get('print_pdf_display_comment_'. $form['#node_type']->type, PRINT_TYPE_COMMENT_LINK_DEFAULT);
$form['print']['print_pdf_display_urllist']['#default_value'] = variable_get('print_pdf_display_urllist_'. $form['#node_type']->type, PRINT_TYPE_URLLIST_DEFAULT);
}
else {
$node = $form['#node'];
$form['print']['print_pdf_display']['#default_value'] = isset($node->print_pdf_display) ? $node->print_pdf_display : PRINT_TYPE_SHOW_LINK_DEFAULT;
$form['print']['print_pdf_display_comment']['#default_value'] = isset($node->print_pdf_display_comment) ? $node->print_pdf_display_comment : PRINT_TYPE_COMMENT_LINK_DEFAULT;
$form['print']['print_pdf_display_urllist']['#default_value'] = isset($node->print_pdf_display_urllist) ? $node->print_pdf_display_urllist : PRINT_TYPE_URLLIST_DEFAULT;
/**
* Auxiliary function to assign the per-node settings to the node object fields
*
* @param $node
* node to be modified
*/
function _print_pdf_set_node_fields(&$node) {
if (isset($node->nid)) {
$res = db_fetch_object(db_query("SELECT link, comments, url_list FROM {print_pdf_node_conf} WHERE nid = %d", $node->nid));
}
else {
$res = FALSE;
}
$node->print_pdf_display = $res ? intval($res->link) : PRINT_TYPE_SHOW_LINK_DEFAULT;
$node->print_pdf_display_comment = $res ? intval($res->comments) : PRINT_TYPE_COMMENT_LINK_DEFAULT;
$node->print_pdf_display_urllist = $res ? intval($res->url_list) : PRINT_TYPE_URLLIST_DEFAULT;
}
/**
* Update the print_pdf_node_conf table to reflect the given attributes
* If updating to the default values, delete the record.
*
* @param $nid
* value of the nid field (primary key)
* @param $link
* value of the link field (0 or 1)
* @param $comments
* value of the comments field (0 or 1)
* @param $url_list
* value of the url_list field (0 or 1)
*/
function _print_pdf_node_conf_modify($nid, $link, $comments, $url_list) {
if (($link == PRINT_TYPE_SHOW_LINK_DEFAULT) && ($comments == PRINT_TYPE_COMMENT_LINK_DEFAULT) &&
($url_list == PRINT_TYPE_URLLIST_DEFAULT)) {
db_query("DELETE FROM {print_pdf_node_conf} WHERE nid = %d", $nid);
}
else {
db_query("UPDATE {print_pdf_node_conf} SET link = %d, comments = %d, url_list = %d WHERE nid = %d", $link, $comments, $url_list, $nid);
if (!db_affected_rows()) {
db_query("INSERT INTO {print_pdf_node_conf} (nid, link, comments, url_list) VALUES (%d, %d, %d, %d)", $nid, $link, $comments, $url_list);
}
}
}
/**
* Format the PDF version link
*
* @return
* array of formatted attributes
* @ingroup themeable
*/
function theme_print_pdf_format_link() {
$print_pdf_link_class = variable_get('print_pdf_link_class', PRINT_PDF_LINK_CLASS_DEFAULT);
$print_pdf_content_disposition = variable_get('print_pdf_content_disposition', PRINT_PDF_CONTENT_DISPOSITION_DEFAULT);
$print_pdf_show_link = variable_get('print_pdf_show_link', PRINT_PDF_SHOW_LINK_DEFAULT);
$print_pdf_link_text = variable_get('print_pdf_link_text', t('PDF version'));
$img = drupal_get_path('module', 'print') .'/icons/pdf_icon.gif';
$title = t('Display a PDF version of this page.');
$class = strip_tags($print_pdf_link_class);
$new_window = ($print_pdf_content_disposition == 1);
$format = _print_format_link_aux($print_pdf_show_link, $print_pdf_link_text, $img);
return array('text' => $format['text'],
'html' => $format['html'],
'attributes' => print_fill_attributes($title, $class, $new_window),
);
}
/**
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* Auxiliary function to display a formatted PDF version link
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* Function made available so that developers may call this function from
* their defined pages/blocks.
*
* @param $path
* path of the original page (optional). If not specified, the current URL
* is used
* @param $node
* an optional node object, to be used in defining the path, if used, the
* path argument is irrelevant
* @return
* string with the HTML link to the printer-friendly page
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function print_pdf_insert_link($path = NULL, $node = NULL) {
if ($node !== NULL) {
$nid = $node->nid;
$path = 'node/'. $nid;
$allowed_type = print_pdf_link_allowed(array('node' => $node));
}
else {
if ($path === NULL) {
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$nid = preg_replace('!^node/!', '', $_GET['q']);
$path = $_GET['q'];
}
else {
$nid = NULL;
}
$allowed_type = print_pdf_link_allowed(array('path' => $path));
}
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if ($allowed_type) {
if ($nid !== NULL) {
if ($allowed_type === PRINT_ALLOW_BOOK_LINK) {
$path = 'book/export/html/'. $nid;
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if (variable_get('print_pdf_link_use_alias', PRINT_PDF_LINK_USE_ALIAS_DEFAULT)) {
$path = drupal_get_path_alias($path);
}
else {
$path = $nid;
}
}
$path = PRINTPDF_PATH .'/'. $path;
$query = print_query_string_encode($_GET, array('q'));
if (empty($query)) {
$query = NULL;
}
}
else {
$query = NULL;
}
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drupal_add_css(drupal_get_path('module', 'print') .'/css/printlinks.css');
$format = theme('print_pdf_format_link');
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return '<span class="print_pdf">'. l($format['text'], $path, $format['attributes'], $query, NULL, TRUE, $format['html']) .'</span>';
}
else {
return FALSE;
}
}
/**
* Determine a the link to the PDF version is allowed depending on all possible settings
*
* @param $args
* array containing the possible parameters:
* teaser, node, type, path
* @return
* FALSE if not allowed
* PRINT_ALLOW_NORMAL_LINK if a normal link is allowed
* PRINT_ALLOW_BOOK_LINK if a link is allowed in a book node
*/
function print_pdf_link_allowed($args) {
$print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
if (!empty($args['teaser']) || !user_access('access print') || (empty($print_pdf_pdf_tool))) {
// If showing only the teaser or the user is not allowed or link is disabled
return FALSE;
}
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if (!empty($args['path'])) {
$nid = preg_replace('!^node/!', '', drupal_get_normal_path($args['path']));
if (is_numeric($nid)) {
$args['node'] = node_load(array('nid' => $nid));
}
}
if (!empty($args['node'])) {
static $node_type = FALSE;
$node = $args['node'];
if ($node_type === FALSE) {
if (isset($node->type)) {
$node_type = $node->type;
}
else {
$node_type = '';
}
}
// Node
$print_pdf_node_link_visibility = variable_get('print_pdf_node_link_visibility', PRINT_PDF_NODE_LINK_VISIBILITY_DEFAULT);
$print_pdf_node_link_pages = variable_get('print_pdf_node_link_pages', PRINT_PDF_NODE_LINK_PAGES_DEFAULT);
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if (!empty($node->printing) ||
!_print_page_match($print_pdf_node_link_visibility, $print_pdf_node_link_pages)) {
// Page not in visibility list or we are working!
return FALSE;
}
elseif (isset($args['type']) && ($args['type'] == 'comment') && isset($node_type)) {
// Link is for a comment, return the configured setting
$res = db_fetch_object(db_query("SELECT comments FROM {print_pdf_node_conf} WHERE nid = %d", $node->nid));
$print_display_comment = $res ? intval($res->comments) : PRINT_TYPE_COMMENT_LINK_DEFAULT;
if (($print_display_comment) ||
variable_get('print_pdf_display_comment_'. $node_type, PRINT_TYPE_COMMENT_LINK_DEFAULT)) {
return PRINT_ALLOW_NORMAL_LINK;
}
}
else {
// Node link
if ((!$node->print_pdf_display) || (isset($node_type) &&
!variable_get('print_pdf_display_'. $node_type, PRINT_TYPE_SHOW_LINK_DEFAULT))) {
// Link for this node type is disabled
return FALSE;
}
elseif (isset($node->parent)) {
// Node is a book;
$print_pdf_book_link = variable_get('print_pdf_book_link', PRINT_PDF_BOOK_LINK_DEFAULT);
switch ($print_pdf_book_link) {
case 1:
if (user_access('see printer-friendly version')) {
return PRINT_ALLOW_BOOK_LINK;
}
break;
case 2:
return PRINT_ALLOW_NORMAL_LINK;
}
}
else {
return PRINT_ALLOW_NORMAL_LINK;
}
}
}
else {
// 'System' page
$print_pdf_sys_link_visibility = variable_get('print_pdf_sys_link_visibility', PRINT_PDF_SYS_LINK_VISIBILITY_DEFAULT);
$print_pdf_sys_link_pages = variable_get('print_pdf_sys_link_pages', PRINT_PDF_SYS_LINK_PAGES_DEFAULT);
return _print_page_match($print_pdf_sys_link_visibility, $print_pdf_sys_link_pages);
}