/**
* Will generate a thumbnail for a given document
*/
function ShowThumbnail($iID, $iPage, $iWidth)
{
$SQL = "SELECT documents.filename AS filename, documents.pagecount AS pages FROM documents LEFT JOIN rawtext ON (rawtext.document = documents.id) WHERE id = " . $iID;
$res = mysql_query($SQL, $this->db);
if ($res === FALSE) {
return FALSE;
}
$aRes = mysql_fetch_array($res);
if ($aRes === FALSE) {
return FALSE;
}
if ($iPage < 1 || $iPage > $aRes["pages"]) {
return FALSE;
}
// Split the thumbs off into their own directory
$sFilename = $aRes["filename"];
$sPath = dirname($sFilename);
$sFile = basename($sFilename);
// Create thumb directory
if (!file_exists($sPath . "/thumbs")) {
if (!mkdir($sPath . "/thumbs")) {
return FALSE;
}
chgrp($sPath . "/thumbs", Config::getPermission("group"));
chmod($sPath . "/thumbs", Config::getPermission("dirmask"));
}
$sThumbnail = sprintf("%s/thumbs/%s-%d-%d.png", $sPath, $sFile, $iWidth, $iPage);
if (!file_exists($sThumbnail)) {
// File doesn't exist, we need to generate one
$sPrefix = uniqid();
/*
$sCmd = sprintf("/usr/bin/pdfimages -f %d -l %d %s /tmp/%s", $iPage, $iPage, $sFilename, $sPrefix);
exec($sCmd);
$sCmd = sprintf("/usr/bin/convert /tmp/%s-000.ppm -resize %dx %s", $sPrefix, $iWidth, $sThumbnail);
exec($sCmd);
*/
$sCmd = sprintf("/usr/bin/convert 2>&1 -depth 8 %s[%d] -resize %dx %s", $sFilename, $iPage - 1, $iWidth, $sThumbnail);
exec($sCmd);
//unlink(sprintf("/tmp/%s-000.ppm", $sPrefix));
chgrp($sThumbnail, Config::getPermission("group"));
chmod($sThumbnail, Config::getPermission("filemask"));
}
readfile($sThumbnail);
}