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<?php

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/**

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* elFinder Plugin AutoResize

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* Auto resize on file upload.

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* ex. binding, configure on connector options

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* $opts = array(

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* 'bind' => array(

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* 'upload.presave' => array(

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* 'Plugin.AutoResize.onUpLoadPreSave'

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* )

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* ),

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* // global configure (optional)

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* 'plugin' => array(

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* 'AutoResize' => array(

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* 'enable' => true, // For control by volume driver

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* 'maxWidth' => 1024, // Path to Water mark image

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* 'maxHeight' => 1024, // Margin right pixel

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* 'quality' => 95, // JPEG image save quality

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* 'preserveExif' => false, // Preserve EXIF data (Imagick only)

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* 'forceEffect' => false, // For change quality or make progressive JPEG of small images

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* 'targetType' => IMG_GIF|IMG_JPG|IMG_PNG|IMG_WBMP, // Target image formats ( bit-field )

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* 'offDropWith' => null, // Enabled by default. To disable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* 'onDropWith' => null // Disabled by default. To enable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* )

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* ),

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* // each volume configure (optional)

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* 'roots' => array(

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* array(

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* 'driver' => 'LocalFileSystem',

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* 'path' => '/path/to/files/',

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* 'URL' => 'http://localhost/to/files/'

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* 'plugin' => array(

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* 'AutoResize' => array(

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* 'enable' => true, // For control by volume driver

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* 'maxWidth' => 1024, // Path to Water mark image

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* 'maxHeight' => 1024, // Margin right pixel

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* 'quality' => 95, // JPEG image save quality

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* 'preserveExif' => false, // Preserve EXIF data (Imagick only)

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* 'forceEffect' => false, // For change quality or make progressive JPEG of small images

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* 'targetType' => IMG_GIF|IMG_JPG|IMG_PNG|IMG_WBMP, // Target image formats ( bit-field )

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* 'offDropWith' => null, // Enabled by default. To disable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* 'onDropWith' => null // Disabled by default. To enable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* )

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* )

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* )

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* )

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* );

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* @package elfinder

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* @author Naoki Sawada

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* @license New BSD

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class elFinderPluginAutoResize extends elFinderPlugin

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{

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public function __construct($opts)

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{

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$defaults = array(

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'enable' => true, // For control by volume driver

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'maxWidth' => 1024, // Path to Water mark image

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'maxHeight' => 1024, // Margin right pixel

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'quality' => 95, // JPEG image save quality

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'preserveExif' => false, // Preserve EXIF data (Imagick only)

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'forceEffect' => false, // For change quality or make progressive JPEG of small images

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'targetType' => IMG_GIF | IMG_JPG | IMG_PNG | IMG_WBMP, // Target image formats ( bit-field )

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'offDropWith' => null, // To disable it if it is dropped with pressing the meta key

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// Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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// In case of using any key, specify it as an array

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'disableWithContentSaveId' => true // Disable on URL upload with post data "contentSaveId"

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);

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$this->opts = array_merge($defaults, $opts);

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}

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public function onUpLoadPreSave(&$thash, &$name, $src, $elfinder, $volume)

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{

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if (!$src) {

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return false;

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}

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$opts = $this->getCurrentOpts($volume);

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if (!$this->iaEnabled($opts, $elfinder)) {

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return false;

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}

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$imageType = null;

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$srcImgInfo = null;

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if (extension_loaded('fileinfo') && function_exists('mime_content_type')) {

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$mime = mime_content_type($src);

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if (substr($mime, 0, 5) !== 'image') {

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return false;

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}

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}

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if (extension_loaded('exif') && function_exists('exif_imagetype')) {

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$imageType = exif_imagetype($src);

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if ($imageType === false) {

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return false;

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}

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} else {

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$srcImgInfo = getimagesize($src);

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if ($srcImgInfo === false) {

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return false;

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}

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$imageType = $srcImgInfo[2];

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}

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// check target image type

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$imgTypes = array(

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IMAGETYPE_GIF => IMG_GIF,

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IMAGETYPE_JPEG => IMG_JPEG,

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IMAGETYPE_PNG => IMG_PNG,

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IMAGETYPE_BMP => IMG_WBMP,

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IMAGETYPE_WBMP => IMG_WBMP

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);

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if (!isset($imgTypes[$imageType]) || !($opts['targetType'] & $imgTypes[$imageType])) {

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return false;

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}

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if (!$srcImgInfo) {

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$srcImgInfo = getimagesize($src);

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}

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if ($opts['forceEffect'] || $srcImgInfo[0] > $opts['maxWidth'] || $srcImgInfo[1] > $opts['maxHeight']) {

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return $this->resize($volume, $src, $srcImgInfo, $opts['maxWidth'], $opts['maxHeight'], $opts['quality'], $opts['preserveExif']);

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}

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return false;

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}

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private function resize($volume, $src, $srcImgInfo, $maxWidth, $maxHeight, $jpgQuality, $preserveExif)

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{

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$zoom = min(($maxWidth / $srcImgInfo[0]), ($maxHeight / $srcImgInfo[1]));

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$width = round($srcImgInfo[0] * $zoom);

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$height = round($srcImgInfo[1] * $zoom);

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$unenlarge = true;

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$checkAnimated = true;

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return $volume->imageUtil('resize', $src, compact('width', 'height', 'jpgQuality', 'preserveExif', 'unenlarge', 'checkAnimated'));

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}

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}

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