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silverstripe-cms/code/ImageEditor.php

240 lines
8.2 KiB
PHP
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<?php
/**
* This Controller handles all operation needed for ImageEditor to work(expect for GD operations).
* @package cms
* @subpackage assets
*/
class ImageEditor extends Controller {
public $fileToEdit = "";
public $fileToEditOnlyName = "";
/**
* Includes all JS required for ImageEditor. This method requires setting
* a fileToEdit URL in POST.
*
* @return String
*/
public function index() {
Requirements::clear();
Requirements::javascript(THIRDPARTY_DIR . 'jsparty/prototype.js');
Requirements::javascript(THIRDPARTY_DIR . 'jsparty/scriptaculous/scriptaculous.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/Utils.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/ImageHistory.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/Image.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/ImageTransformation.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/Resizeable.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/Effects.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/Environment.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/Crop.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/Resize.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/ImageBox.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/ImageEditor.js');
Requirements::javascript(CMS_DIR . '/javascript/ImageEditor/DocumentBody.js');
Requirements::javascript(THIRDPARTY_DIR . 'jsparty/loader.js');
Requirements::javascript(THIRDPARTY_DIR . 'jsparty/behaviour.js');
Requirements::javascript(CMS_DIR . '/javascript/LeftAndMain.js');
Requirements::css(CMS_DIR . 'css/ImageEditor/ImageEditor.css');
if(!isset($this->requestParams['fileToEdit'])) $this->raiseError();
$fileWithPath = $this->requestParams['fileToEdit'];
$this->fileToEdit = $this->file2Origin($fileWithPath);
$this->fileToEditOnlyName = $this->urlToFilename($this->fileToEdit);
return $this->renderWith(__CLASS__);
}
/**
* Method is used for manipulating photos.
* Method requires two params set in POST
* file - file on which operation will be performed
* command - name of operation(crop|rotate|resize)
*
* Each operation requires additional parameters.
*
* @return String - JSON array with image properties (width,height,url).
*/
public function manipulate() {
$fileName = $this->requestParams['file'];
if(strpos($fileName,'?') !== false) $fileName = substr($fileName,0,strpos($fileName,'?'));
$command = $this->requestParams['command'];
$this->checkFileExists($fileName);
$fileInfo = pathinfo($fileName);
$gd = new GD($this->url2File($fileName));
switch($command) {
case 'rotate':
$angle = $_POST['angle'];
$gd = $gd->rotate($angle);
break;
case 'resize':
$imageNewWidth = $_POST['newImageWidth'];
$imageNewHeight = $_POST['newImageHeight'];
$gd = $gd->resize($imageNewWidth,$imageNewHeight);
break;
case 'crop':
$top = $_POST['top'];
$left = $_POST['left'];
$width = $_POST['width'];
$height = $_POST['height'];
$gd = $gd->crop($top,$left,$width,$height);
break;
}
$rand = md5(rand(1,100000));
$gd->writeTo(ASSETS_PATH . '/_tmp/' . $rand . '.' . $fileInfo['extension']);
return $this->getImageInfoInJSON($gd,ASSETS_PATH . '/_tmp/' . $rand . '.' . $fileInfo['extension']);
}
/**
* Method is used for saving photos.
* Method requires two params set in POST
* originalFile - this file will be replaced by second file
* editedFile - this file will replace first file.
*
* After replacing original file all thumbnails created from it are removed.
*
* @return String - Message that everything went ok.
*/
public function save() {
if(isset($this->requestParams['originalFile']) && isset($this->requestParams['editedFile'])) {
$originalFile = $this->requestParams['originalFile'];
$editedFile = $this->requestParams['editedFile'];
if(strpos($originalFile,'?') !== false) $originalFile = substr($originalFile,0,strpos($originalFile,'?'));
if($this->checkFileExists($originalFile) && $this->checkFileExists($editedFile)) {
if($editedFile != $originalFile && copy($this->url2File($editedFile),$this->url2File($originalFile))) {
$image = DataObject::get_one('File','Filename = \'' . substr($this->url2File($originalFile),3) . '\'');
$image->deleteFormattedImages();
$image->generateFormattedImage('AssetLibraryPreview');
} else {
$this->raiseError();
}
} else {
$this->raiseError();
}
} else {
$this->raiseError();
}
return 'parent.parent.parent.statusMessage(\'Image saved\',\'good\',false);';
}
/**
* Method is invoked when ImageEditor is closed whether image is saved or not.
*
* /assets/tmp is folder where we store temporary images created during editing so
* after closing they are no necessity to keep them.
*
* @return null
*/
public function close() {
$tmpDir = ASSETS_PATH . '/_tmp';
if(file_exists($tmpDir)) {
Filesystem::removeFolder($tmpDir);
mkdir($tmpDir, Filesystem::$folder_create_mask);
}
}
/**
* Method return JSON array containing info about image.
*
* @param gd - GD object used for retrieving info about image
* @param file
*
* @return string JSON array explained in manipulate method comment
*/
private function getImageInfoInJSON(GD $gd,$file) {
return '{"fileName":"' . $file . '","width":' . $gd->getWidth() . ',"height":' . $gd->getHeight() . '}';
}
/**
* Method converts thumbnail file name to file name of it's "parent"
*
* @param file - name of thumbnail file
*
* @return string name of parent file.
*/
private function file2Origin($file) {
$file = str_replace('_resampled/','',$file);
$file = str_replace('_resampled/','',$file);
$file = str_replace('AssetLibraryPreview-','',$file);
$this->checkFileExists($file);
return $file;
}
/**
* Method converts URL of file to file path in file system.
*
* @param url - url of file
*
* @return string path of file in file system
*/
private function url2File($url) {
return '..' . substr($url,strpos($url,'/assets'));
}
/**
* Method checks if file exists and have proper name and extension.
*
* If any of constraints aren't fulfilled method will generate error.
*
* @param url - url of file
*
* @return boolean
*/
private function checkFileExists($url) {
if(strpos($url,'?') !== false) $url = substr($url,0,strpos($url,'?'));
$pathInfo = pathinfo($url);
if(count($pathInfo) < 3) $this->raiseError();
if(!in_array($pathInfo['extension'],array('jpeg','jpg','jpe','png','gif','JPEG','JPG','JPE','PNG','GIF'))) $this->raiseError();
$path = explode('/',$pathInfo['dirname']);
if(count($path) > 1) {
$assetId = array_search('assets',$path);
if($assetId > 0) {
$realPath = '../' . implode('/',array_slice($path,$assetId,count($path) - $assetId));
if(strpos($pathInfo['basename'],'AssetLibraryPreview') !== false) {
$realPath .= '/' . substr($pathInfo['basename'],strpos($pathInfo['basename'],'-'));
} else {
$realPath .= '/' . $pathInfo['basename'];
}
} else {
$this->raiseError();
}
if(file_exists($realPath)) {
return true;
} else {
$this->raiseError();
}
} else {
$this->raiseError();
}
}
/**
* Method raiser error. Error is showed using statusMessage function.
*
* @param message - error message
*
*/
private function raiseError($message = "") {
echo "parent.parent.parent.statusMessage('Error: " . $message . "','bad',false);";
exit();
}
/**
* Method converts retrieves filename from url
*
* @param url
*
*/
private function urlToFilename($url) {
$path = pathinfo($url);
return $path['filename'] . "." . substr($path['extension'],0,strpos($path['extension'],'?'));
}
}
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