mirror of
https://git.code.sf.net/p/seeddms/code
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135 lines
3.4 KiB
PHP
135 lines
3.4 KiB
PHP
<?php
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/**
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* Implementation of preview documents
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*
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* @category DMS
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* @package LetoDMS_Preview
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* @license GPL 2
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2010, Uwe Steinmann
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* @version Release: @package_version@
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*/
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/**
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* Class for managing creation of preview images for documents.
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*
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* @category DMS
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* @package LetoDMS_Preview
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2011, Uwe Steinmann
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* @version Release: @package_version@
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*/
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class LetoDMS_Preview_Previewer {
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/**
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* @var string $cacheDir location in the file system where all the
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* cached data like thumbnails are located. This should be an
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* absolute path.
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* @access public
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*/
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public $previewDir;
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/**
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* @var integer $width maximum width/height of resized image
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* @access protected
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*/
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protected $width;
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function __construct($previewDir, $width=40) {
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if(!is_dir($previewDir)) {
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if (!LetoDMS_Core_File::makeDir($previewDir)) {
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$this->previewDir = '';
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} else {
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$this->previewDir = $previewDir;
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}
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} else {
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$this->previewDir = $previewDir;
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}
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$this->width = intval($width);
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}
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function createPreview($documentcontent, $width=0) { /* {{{ */
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if($width == 0)
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$width = $this->width;
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else
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$width = intval($width);
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if(!$this->previewDir)
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return false;
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$document = $documentcontent->getDocument();
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$dir = $this->previewDir.'/'.$document->getDir();
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if(!is_dir($dir)) {
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if (!LetoDMS_Core_File::makeDir($dir)) {
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return false;
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}
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}
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$file = $document->_dms->contentDir.$documentcontent->getPath();
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if(!file_exists($file))
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return false;
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$target = $dir.'p'.$documentcontent->getVersion().'-'.$width.'.png';
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if(!file_exists($target)) {
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$cmd = '';
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switch($documentcontent->getMimeType()) {
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case "image/png":
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case "image/gif":
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case "image/jpeg":
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case "image/jpg":
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$cmd = 'convert -resize '.$width.'x'.$width.' '.$file.' '.$target;
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break;
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case "application/pdf":
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$cmd = 'convert -density 18 -resize '.$width.'x'.$width.' '.$file.'[0] '.$target;
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}
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if($cmd) {
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system( $cmd);
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}
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return true;
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}
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return true;
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} /* }}} */
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function hasPreview($documentcontent, $width=0) { /* {{{ */
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if($width == 0)
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$width = $this->width;
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else
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$width = intval($width);
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if(!$this->previewDir)
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return false;
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$document = $documentcontent->getDocument();
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$dir = $this->previewDir.'/'.$document->getDir();
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$target = $dir.'p'.$documentcontent->getVersion().'-'.$width.'.png';
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if(file_exists($target)) {
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return true;
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}
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return false;
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} /* }}} */
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function getPreview($documentcontent, $width=0) { /* {{{ */
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if($width == 0)
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$width = $this->width;
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else
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$width = intval($width);
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if(!$this->previewDir)
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return false;
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$document = $documentcontent->getDocument();
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$dir = $this->previewDir.'/'.$document->getDir();
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$target = $dir.'p'.$documentcontent->getVersion().'-'.$width.'.png';
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if(file_exists($target)) {
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readfile($target);
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}
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} /* }}} */
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function deletePreview($document, $documentcontent) { /* {{{ */
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if($width == 0)
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$width = $this->width;
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else
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$width = intval($width);
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if(!$this->previewDir)
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return false;
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$dir = $this->previewDir.'/'.$document->getDir();
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$target = $dir.'p'.$documentcontent->getVersion().'-'.$width.'.png';
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} /* }}} */
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}
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?>
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