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<?php
/**
* DokuWiki Plugin dw2pdf (Renderer Component)
*
* @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
* @author Andreas Gohr <gohr@cosmocode.de>
*/
// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();
/**
* Render xhtml suitable as input for mpdf library
*/
class renderer_plugin_dw2pdf extends Doku_Renderer_xhtml {
private $lastHeaderLevel = -1;
private $originalHeaderLevel = 0;
private $difference = 0;
/**
* Stores action instance
*
* @var action_plugin_dw2pdf
*/
private $actioninstance = null;
/**
* load action plugin instance
*/
public function __construct() {
$this->actioninstance = plugin_load('action', 'dw2pdf');
}
public function document_start() {
global $ID;
parent::document_start();
//ancher for rewritten links to included pages
$check = false;
$pid = sectionID($ID, $check);
$this->doc .= "<a name=\"{$pid}__\">";
$this->doc .= "</a>";
}
/**
* Make available as XHTML replacement renderer
*
* @param $format
* @return bool
*/
public function canRender($format) {
if($format == 'xhtml') return true;
return false;
}
/**
* Simplified header printing with PDF bookmarks
*
* @param string $text
* @param int $level from 1 (highest) to 6 (lowest)
* @param int $pos
*/
public function header($text, $level, $pos) {
if(!$text) return; //skip empty headlines
global $ID;
$hid = $this->_headerToLink($text, true);
//only add items within global configured levels (doesn't check the pdf toc settings)
$this->toc_additem($hid, $text, $level);
$check = false;
$pid = sectionID($ID, $check);
$hid = $pid . '__' . $hid;
// add PDF bookmark
$bookmark = '';
$maxbookmarklevel = $this->actioninstance->getExportConfig('maxbookmarks');
// 0: off, 1-6: show down to this level
if($maxbookmarklevel && $maxbookmarklevel >= $level) {
$bookmarklevel = $this->calculateBookmarklevel($level);
$bookmark = '<bookmark content="' . $this->_xmlEntities($text) . '" level="' . ($bookmarklevel) . '" />';
}
// print header
$this->doc .= DOKU_LF . "<h$level>$bookmark";
$this->doc .= "<a name=\"$hid\">";
$this->doc .= $this->_xmlEntities($text);
$this->doc .= "</a>";
$this->doc .= "</h$level>" . DOKU_LF;
}
/**
* Bookmark levels might increase maximal +1 per level.
* (note: levels start at 1, bookmarklevels at 0)
*
* @param int $level 1 (highest) to 6 (lowest)
* @return int
*/
protected function calculateBookmarklevel($level) {
if($this->lastHeaderLevel == -1) {
$this->lastHeaderLevel = $level;
}
$step = $level - $this->lastHeaderLevel;
if($step > 1) {
$this->difference = $this->difference + ($step - 1);
}
if($step < 0) {
$this->difference = min($this->difference, $level - $this->originalHeaderLevel);
$this->difference = max($this->difference, 0);
}
$bookmarklevel = $level - $this->difference;
if($step > 1) {
$this->originalHeaderLevel = $bookmarklevel;
}
$this->lastHeaderLevel = $level;
return $bookmarklevel - 1; //zero indexed
}
/**
* Render a page local link
*
* // modified copy of parent function
*
* @param string $hash hash link identifier
* @param string $name name for the link
* @param bool $returnonly
* @return string|void
*
* @see Doku_Renderer_xhtml::locallink
*/
function locallink($hash, $name = null, $returnonly = false) {
global $ID;
$name = $this->_getLinkTitle($name, $hash, $isImage);
$hash = $this->_headerToLink($hash);
$title = $ID . '';
$check = false;
$pid = sectionID($ID, $check);
$this->doc .= '<a href="#' . $pid . '__' . $hash . '" title="' . $title . '" class="wikilink1">';
$this->doc .= $name;
$this->doc .= '</a>';
}
/**
* Wrap centered media in a div to center it
*
* @param string $src media ID
* @param string $title descriptive text
* @param string $align left|center|right
* @param int $width width of media in pixel
* @param int $height height of media in pixel
* @param string $cache cache|recache|nocache
* @param bool $render should the media be embedded inline or just linked
* @return string
*/
function _media($src, $title = NULL, $align = NULL, $width = NULL,
$height = NULL, $cache = NULL, $render = true) {
$out = '';
if($align == 'center') {
$out .= '<div align="center" style="text-align: center">';
}
$out .= parent::_media($src, $title, $align, $width, $height, $cache, $render);
if($align == 'center') {
$out .= '</div>';
}
return $out;
}
/**
* hover info makes no sense in PDFs, so drop acronyms
*
* @param string $acronym
*/
function acronym($acronym) {
$this->doc .= $this->_xmlEntities($acronym);
}
/**
* reformat links if needed
*
* @param array $link
* @return string
*/
function _formatLink($link) {
// for internal links contains the title the pageid
if(in_array($link['title'], $this->actioninstance->getExportedPages())) {
list(/* $url */, $hash) = explode('#', $link['url'], 2);
$check = false;
$pid = sectionID($link['title'], $check);
$link['url'] = "#" . $pid . '__' . $hash;
}
// prefix interwiki links with interwiki icon
if($link['name'][0] != '<' && preg_match('/\binterwiki iw_(.\w+)\b/', $link['class'], $m)) {
if(file_exists(DOKU_INC . 'lib/images/interwiki/' . $m[1] . '.png')) {
$img = DOKU_BASE . 'lib/images/interwiki/' . $m[1] . '.png';
} elseif(file_exists(DOKU_INC . 'lib/images/interwiki/' . $m[1] . '.gif')) {
$img = DOKU_BASE . 'lib/images/interwiki/' . $m[1] . '.gif';
} else {
$img = DOKU_BASE . 'lib/images/interwiki.png';
}
$link['name'] = '<img src="' . $img . '" width="16" height="16" style="vertical-align: center" class="' . $link['class'] . '" />' . $link['name'];
}
return parent::_formatLink($link);
}
/**
* no obfuscation for email addresses
*
* @param string $address
* @param null $name
* @param bool $returnonly
* @return string|void
*/
function emaillink($address, $name = NULL, $returnonly = false) {
global $conf;
$old = $conf['mailguard'];
$conf['mailguard'] = 'none';
parent::emaillink($address, $name, $returnonly);
$conf['mailguard'] = $old;
}
}