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<?php
/**
* Embed an image gallery
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
if(!defined('DOKU_INC')) define('DOKU_INC', realpath(dirname(__FILE__).'/../../').'/');
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN', DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'syntax.php');
require_once(DOKU_INC.'inc/search.php');
require_once(DOKU_INC.'inc/JpegMeta.php');
class syntax_plugin_panoview extends DokuWiki_Syntax_Plugin {
/**
* What kind of syntax are we?
*/
function getType() {
return 'substition';
}
/**
* What about paragraphs?
*/
function getPType() {
return 'block';
}
/**
* Where to sort in?
*/
function getSort() {
return 301;
}
/**
* Connect pattern to lexer
*/
function connectTo($mode) {
$this->Lexer->addSpecialPattern('\{\{panoview>[^}]*\}\}', $mode, 'plugin_panoview');
}
/**
* Handle the match
*/
function handle($match, $state, $pos, Doku_Handler $handler) {
global $ID;
$data = array(
'width' => 500,
'height' => 250,
'align' => 0,
'initialZoom' => 1,
'tileBaseUri' => DOKU_BASE.'lib/plugins/panoview/tiles.php',
'tileSize' => 256,
'maxZoom' => 10,
'blankTile' => DOKU_BASE.'lib/plugins/panoview/gfx/blank.gif',
'loadingTile' => DOKU_BASE.'lib/plugins/panoview/gfx/progress.gif',
);
$match = substr($match, 11, -2); //strip markup from start and end
// alignment
$data['align'] = 0;
if(substr($match, 0, 1) == ' ') $data['align'] += 1;
if(substr($match, -1, 1) == ' ') $data['align'] += 2;
// extract params
list($img, $params) = explode('?', $match, 2);
$img = trim($img);
// resolving relatives
$data['image'] = resolve_id(getNS($ID), $img);
$file = mediaFN($data['image']);
list($data['imageWidth'], $data['imageHeight']) = @getimagesize($file);
// calculate maximum zoom
$data['maxZoom'] = ceil(sqrt(max($data['imageWidth'], $data['imageHeight']) / $data['tileSize']));
// size
if(preg_match('/\b(\d+)[xX](\d+)\b/', $params, $match)) {
$data['width'] = $match[1];
$data['height'] = $match[2];
}
// initial zoom
if(preg_match('/\b[zZ](\d+)\b/', $params, $match)) {
$data['initialZoom'] = $match[1];
}
if($data['initialZoom'] < 0) $data['initialZoom'] = 0;
if($data['initialZoom'] > $data['maxZoom']) $data['initialZoom'] = $data['maxZoom'];
return $data;
}
/**
* Create output
*/
function render($mode, Doku_Renderer $R, $data) {
if($mode != 'xhtml') return false;
global $ID;
require_once(DOKU_INC.'inc/JSON.php');
$json = new JSON();
$img = '<a href="'.ml($data['image'], array('id'=> $ID), false).'"><img src="'.
ml($data['image'], array('w'=> $data['width'], 'h'=> $data['height'])).'" width="'.
$data['width'].'" height="'.$data['height'].'" alt="" /></a>';
if($data['align'] == 1) {
$align = 'medialeft';
} elseif($data['align'] == 2) {
$align = 'mediaright';
} else {
$align = 'mediacenter';
}
$R->doc .= '
<div class="panoview_plugin '.$align.'" style="width: '.$data['width'].'px; height: '.$data['height'].'px;">
<div class="well"><!-- --></div>
<div class="surface">'.$img.'</div>
<p class="controls" style="display: none">
<span class="zoomIn" title="Zoom In">+</span>
<span class="zoomOut" title="Zoom Out">-</span>
<span class="maximize"><img src="'.DOKU_BASE.'lib/plugins/panoview/gfx/window.gif" style="position: absolute; bottom: 4px; right: 5px;" title="Maximize"></span>
</p>
<div class="options" style="display:none">'.hsc($json->encode($data)).'</div>
</div>
';
return true;
}
// ----------- Tile Generator below ---------------
/**
* Create a tile using libGD
*/
function tile_gd($d) {
global $conf;
$img = null;
if(preg_match('/\.jpe?g$/', $d['file'])) {
$img = @imagecreatefromjpeg($d['file']);
} elseif(preg_match('/\.png$/', $d['file'])) {
$img = @imagecreatefrompng($d['file']);
} elseif(preg_match('/\.gif$/', $d['file'])) {
$img = @imagecreatefromgif($d['file']);
}
if(!$img) $this->gfx_error('generic');
$crop = $this->image_crop($img, $d['width'], $d['height'], $d['tlx'], $d['tly'], $d['brx'], $d['bry']);
imagedestroy($img);
$scale = $this->image_scale($crop, abs($d['brx'] - $d['tlx']), abs($d['bry'] - $d['tly']), $d['ts'], $d['ts']);
imagedestroy($crop);
imagejpeg($scale, $d['cache'], $conf['jpg_quality']);
imagedestroy($scale);
if($conf['fperm']) chmod($d['cache'], $conf['fperm']);
}
/**
* Create a tile using Image Magick
*/
function tile_im($d) {
global $conf;
$cmd = $this->getConf('nice');
$cmd .= ' '.$conf['im_convert'];
$cmd .= ' '.escapeshellarg($d['file']);
$cmd .= ' -crop \''.abs($d['brx'] - $d['tlx']).'x'.abs($d['bry'] - $d['tly']).'!+'.$d['tlx'].'+'.$d['tly'].'\'';
$cmd .= ' -background black';
$cmd .= ' -extent \''.abs($d['brx'] - $d['tlx']).'x'.abs($d['bry'] - $d['tly']).'!\'';
$cmd .= ' -resize \''.$d['ts'].'x'.$d['ts'].'!\'';
$cmd .= ' -quality '.$conf['jpg_quality'];
$cmd .= ' '.escapeshellarg($d['cache']);
# dbg($cmd); exit;
@exec($cmd, $out, $retval);
if($retval == 0) return true;
$this->gfx_error('generic');
}
/**
* Scale an image with libGD
*/
function image_scale($image, $x, $y, $w, $h) {
$scale = imagecreatetruecolor($w, $h);
imagecopyresampled($scale, $image, 0, 0, 0, 0, $w, $h, $x, $y);
return $scale;
}
/**
* Crop an image with libGD
*/
function image_crop($image, $x, $y, $left, $upper, $right, $lower) {
$w = abs($right - $left);
$h = abs($lower - $upper);
$crop = imagecreatetruecolor($w, $h);
imagecopy($crop, $image, 0, 0, $left, $upper, $w, $h);
return $crop;
}
/**
* Send a graphical error message and stop script
*/
function gfx_error($type) {
$file = dirname(__FILE__).'/gfx/'.$type.'.gif';
$time = filemtime($file);
header('Content-type: image/gif');
http_conditionalRequest($time);
http_sendfile($file);
readfile($file);
exit;
}
/**
* Acquire a lock for the tile generator
*/
function tile_lock($d) {
global $conf;
$lockDir = $conf['lockdir'].'/'.md5($d['id']).'.panoview';
@ignore_user_abort(1);
$timeStart = time();
do {
//waited longer than 25 seconds? -> stale lock?
if((time() - $timeStart) > 25) {
if(time() - @filemtime($lockDir) > 30) $this->tile_unlock($d);
send_redirect(DOKU_URL.'lib/plugins/panoview/tiles.php?tile='.$d['zoom'].'-'.$d['col'].'-'.$d['row'].'&image='.rawurlencode($d['id']));
exit;
}
$locked = @mkdir($lockDir, $conf['dmode']);
if($locked) {
if(!empty($conf['dperm'])) chmod($lockDir, $conf['dperm']);
break;
}
usleep(rand(500, 3000));
} while($locked === false);
}
/**
* Unlock the tile generator
*/
function tile_unlock($d) {
global $conf;
$lockDir = $conf['lockdir'].'/'.md5($d['id']).'.panoview';
@rmdir($lockDir);
@ignore_user_abort(0);
}
}
//Setup VIM: ex: et ts=4 enc=utf-8 :
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