*/ class syntax_plugin_panoview extends SyntaxPlugin { /** * What kind of syntax are we? */ public function getType() { return 'substition'; } /** * What about paragraphs? */ public function getPType() { return 'block'; } /** * Where to sort in? */ public function getSort() { return 301; } /** * Connect pattern to lexer */ public function connectTo($mode) { $this->Lexer->addSpecialPattern('\{\{panoview>[^}]*\}\}', $mode, 'plugin_panoview'); } /** * Handle the match */ public function handle($match, $state, $pos, Doku_Handler $handler) { global $ID; $data = ['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 $data['align'] = 0; if (str_starts_with($match, ' ')) $data['align'] += 1; if (str_ends_with($match, ' ')) $data['align'] += 2; // extract params [$img, $params] = explode('?', $match, 2); $img = trim($img); // resolving relatives $data['image'] = resolve_id(getNS($ID), $img); $file = mediaFN($data['image']); [$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 $data; } /** * Create output */ public function render($mode, Doku_Renderer $R, $data) { if ($mode != 'xhtml') return false; global $ID; $img = '

'; if ($data['align'] == 1) { $align = 'medialeft'; } elseif ($data['align'] == 2) { $align = 'mediaright'; } else { $align = 'mediacenter'; } $R->doc .= '

' . $img . '

'; return true; } // ----------- Tile Generator below --------------- /** * Create a tile using libGD */ public function tileGD($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 === null) $this->gfxError('generic'); $crop = $this->imageCrop($img, $d['width'], $d['height'], $d['tlx'], $d['tly'], $d['brx'], $d['bry']); imagedestroy($img); $scale = $this->imageScale($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'], $conf['fperm']); } /** * Create a tile using Image Magick */ public function tileIM($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; $this->gfxError('generic'); } /** * Scale an image with libGD */ public function imageScale($image, $x, $y, $w, $h) { $scale = imagecreatetruecolor($w, $h); imagecopyresampled($scale, $image, 0, 0, 0, 0, $w, $h, $x, $y); return $scale; } /** * Crop an image with libGD */ public function imageCrop($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 $crop; } /** * Send a graphical error message and stop script */ public function gfxError($type) { $file = __DIR__ . '/gfx/' . $type . '.gif'; $time = filemtime($file); header('Content-type: image/gif'); http_conditionalRequest($time); http_sendfile($file); readfile($file); exit; } /** * Acquire a lock for the tile generator */ public function tileLock($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) $this->tileUnlock($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, $conf['dperm']); break; } usleep(random_int(500, 3000)); } while ($locked === false); } /** * Unlock the tile generator */ public function tileUnlock($d) { global $conf; $lockDir = $conf['lockdir'] . '/' . md5($d['id']) . '.panoview'; @rmdir($lockDir); @ignore_user_abort(0); } }