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,
);
}
return $items;
}
/**
* Implementation of hook_requirements().
*/
function print_pdf_requirements($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('Print PDF'),
'value' => $t('No PDF tool selected. Please configure it in the PDF settings page.', array('@url' => url('admin/settings/print/pdf'))),
'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 $links;
}
}
else {
return;
}
}
/**
* Implementation of hook_help().
*/
function print_pdf_help($path) {
$print_pdf_link_pos = variable_get('print_pdf_link_pos', array(PRINT_PDF_LINK_POS_DEFAULT => PRINT_PDF_LINK_POS_DEFAULT));
if ((preg_match('!^node/!i', $path) == 0) &&
!(empty($print_pdf_link_pos['link']) && empty($print_pdf_link_pos['corner']))) {
static $output = FALSE;
if ($output === FALSE) {
$output = TRUE;
$link = print_pdf_insert_link();
if ($link) {
return "$link";
}
}
}
}
/**
* Implementation of hook_nodeapi().
*/
function print_pdf_nodeapi(&$node, $op = 'view', $teaser, $page) {
switch ($op) {
case 'view':
$print_pdf_link_pos = variable_get('print_pdf_link_pos', array(PRINT_PDF_LINK_POS_DEFAULT => PRINT_PDF_LINK_POS_DEFAULT));
if (($teaser === FALSE) && !empty($print_pdf_link_pos['corner']) &&
(preg_match('!^print!i', $_GET['q']) == 0)) {
$link = print_pdf_insert_link(NULL, $node);
if ($link) {
$node->content['print_pdf_link'] = array(
'#value' => "$link",
'#weight' => -3,
);
}
}
}
}
/**
* 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 ($form_id == 'node_type_form') {
$form['print']['print_pdf_display'] = array(
'#type' => 'checkbox',
'#title' => t('Show PDF version link'),
'#default_value' => variable_get('print_pdf_display_'. $form['#node_type']->type, PRINT_TYPE_SHOW_LINK_DEFAULT),
'#description' => t('Displays the link to a PDF version of the content. Further configuration is available on the !settings.', array('!settings' => l(t('settings page'), 'admin/settings/print' ))),
);
$form['print']['print_pdf_display_comment'] = array(
'#type' => 'checkbox',
'#title' => t('Show PDF version link in individual comments'),
'#default_value' => variable_get('print_pdf_display_comment_'. $form['#node_type']->type, PRINT_TYPE_COMMENT_LINK_DEFAULT),
'#description' => t('Displays the link to a PDF version of the comment. Further configuration is available on the !settings.', array('!settings' => l(t('settings page'), 'admin/settings/print' ))),
);
}
}
/**
* 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);
$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, $text, $img);
return array('text' => $format['text'],
'html' => $format['html'],
'attributes' => print_fill_attributes($title, $class, $new_window),
);
}
/**
* Auxiliary function to display a formatted PDF version link
*
* 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 $node
* an optional node object, to be used in defining the path, if used, the
* path argument is irrelevant
* @return
* string with the HTML link to the printer-friendly page
*/
function print_pdf_insert_link($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) {
$nid = preg_replace('!^node/!', '', $_GET['q']);
$path = $_GET['q'];
}
else {
$nid = NULL;
}
$allowed_type = print_pdf_link_allowed(array('path' => $path));
}
if ($allowed_type) {
if ($nid !== NULL) {
if ($allowed_type === PRINT_ALLOW_BOOK_LINK) {
$path = 'book/export/html/'. $nid;
}
else {
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;
}
drupal_add_css(drupal_get_path('module', 'print') .'/css/printlinks.css');
$format = theme('print_pdf_format_link');
return ''. l($format['text'], $path, $format['attributes'], $query, NULL, TRUE, $format['html']) .'';
}
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($print_pdf_pdf_tool))) {
// If showing only the teaser or the user is not allowed or link is disabled
return FALSE;
}
if (!empty($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);
$print_pdf_node_link_pages = variable_get('print_pdf_node_link_pages', PRINT_PDF_NODE_LINK_PAGES_DEFAULT);
if (!empty($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
return variable_get('print_pdf_display_comment_'. $node_type, PRINT_TYPE_COMMENT_LINK_DEFAULT);
}
else {
// Node link
if (isset($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;
$print_pdf_book_link = variable_get('print_pdf_book_link', PRINT_PDF_BOOK_LINK_DEFAULT);
if (!$print_pdf_book_link || !user_access('see printer-friendly version')) {
// Book link is disabled
return FALSE;
}
else {
return PRINT_ALLOW_BOOK_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);
}
}