679 lines
18 KiB
PHP
679 lines
18 KiB
PHP
<?php
|
|
|
|
/**
|
|
* ownCloud
|
|
*
|
|
* @author Thomas Tanghus
|
|
* @copyright 2011 Thomas Tanghus <thomas@tanghus.net>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
|
|
* License as published by the Free Software Foundation; either
|
|
* version 3 of the License, or any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
//From user comments at http://dk2.php.net/manual/en/function.exif-imagetype.php
|
|
if ( ! function_exists( 'exif_imagetype' ) ) {
|
|
function exif_imagetype ( $filename ) {
|
|
if ( ( $info = getimagesize( $filename ) ) !== false ) {
|
|
return $info[2];
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function ellipsis($str, $maxlen) {
|
|
if (strlen($str) > $maxlen) {
|
|
$characters = floor($maxlen / 2);
|
|
return substr($str, 0, $characters) . '...' . substr($str, -1 * $characters);
|
|
}
|
|
return $str;
|
|
}
|
|
|
|
/**
|
|
* Class for basic image manipulation
|
|
*
|
|
*/
|
|
class OC_Image {
|
|
protected $resource = false; // tmp resource.
|
|
protected $imagetype = IMAGETYPE_PNG; // Default to png if file type isn't evident.
|
|
protected $filepath = null;
|
|
|
|
/**
|
|
* @brief Get mime type for an image file.
|
|
* @param $filepath The path to a local image file.
|
|
* @returns string The mime type if the it could be determined, otherwise an empty string.
|
|
*/
|
|
static public function getMimeTypeForFile($filepath) {
|
|
$imagetype = exif_imagetype($filepath);
|
|
return $imagetype ? image_type_to_mime_type($imagetype) : '';
|
|
}
|
|
|
|
/**
|
|
* @brief Constructor.
|
|
* @param $imageref The path to a local file, a base64 encoded string or a resource created by an imagecreate* function.
|
|
* @returns bool False on error
|
|
*/
|
|
public function __construct($imageref = null) {
|
|
//OC_Log::write('core',__METHOD__.'(): start', OC_Log::DEBUG);
|
|
if(!extension_loaded('gd') || !function_exists('gd_info')) {
|
|
OC_Log::write('core',__METHOD__.'(): GD module not installed', OC_Log::ERROR);
|
|
return false;
|
|
}
|
|
if(!is_null($imageref)) {
|
|
$this->load($imageref);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Determine whether the object contains an image resource.
|
|
* @returns bool
|
|
*/
|
|
public function valid() { // apparently you can't name a method 'empty'...
|
|
return is_resource($this->resource);
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the MIME type of the image or an empty string if no image is loaded.
|
|
* @returns int
|
|
*/
|
|
public function mimeType() {
|
|
return $this->valid() ? image_type_to_mime_type($this->imagetype) : '';
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the width of the image or -1 if no image is loaded.
|
|
* @returns int
|
|
*/
|
|
public function width() {
|
|
return $this->valid() ? imagesx($this->resource) : -1;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the height of the image or -1 if no image is loaded.
|
|
* @returns int
|
|
*/
|
|
public function height() {
|
|
return $this->valid() ? imagesy($this->resource) : -1;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the width when the image orientation is top-left.
|
|
* @returns int
|
|
*/
|
|
public function widthTopLeft() {
|
|
$o = $this->getOrientation();
|
|
OC_Log::write('core','OC_Image->widthTopLeft() Orientation: '.$o, OC_Log::DEBUG);
|
|
switch($o) {
|
|
case -1:
|
|
case 1:
|
|
case 2: // Not tested
|
|
case 3:
|
|
case 4: // Not tested
|
|
return $this->width();
|
|
break;
|
|
case 5: // Not tested
|
|
case 6:
|
|
case 7: // Not tested
|
|
case 8:
|
|
return $this->height();
|
|
break;
|
|
}
|
|
return $this->width();
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the height when the image orientation is top-left.
|
|
* @returns int
|
|
*/
|
|
public function heightTopLeft() {
|
|
$o = $this->getOrientation();
|
|
OC_Log::write('core','OC_Image->heightTopLeft() Orientation: '.$o, OC_Log::DEBUG);
|
|
switch($o) {
|
|
case -1:
|
|
case 1:
|
|
case 2: // Not tested
|
|
case 3:
|
|
case 4: // Not tested
|
|
return $this->height();
|
|
break;
|
|
case 5: // Not tested
|
|
case 6:
|
|
case 7: // Not tested
|
|
case 8:
|
|
return $this->width();
|
|
break;
|
|
}
|
|
return $this->height();
|
|
}
|
|
|
|
/**
|
|
* @brief Outputs the image.
|
|
* @returns bool
|
|
*/
|
|
public function show() {
|
|
header('Content-Type: '.$this->mimeType());
|
|
return $this->_output();
|
|
}
|
|
|
|
/**
|
|
* @brief Saves the image.
|
|
* @returns bool
|
|
*/
|
|
|
|
public function save($filepath=null) {
|
|
if($filepath === null && $this->filepath === null) {
|
|
OC_Log::write('core',__METHOD__.'(): called with no path.', OC_Log::ERROR);
|
|
return false;
|
|
} elseif($filepath === null && $this->filepath !== null) {
|
|
$filepath = $this->filepath;
|
|
}
|
|
return $this->_output($filepath);
|
|
}
|
|
|
|
/**
|
|
* @brief Outputs/saves the image.
|
|
*/
|
|
private function _output($filepath=null) {
|
|
if($filepath) {
|
|
if (!file_exists(dirname($filepath)))
|
|
mkdir(dirname($filepath), 0777, true);
|
|
if(!is_writable(dirname($filepath))) {
|
|
OC_Log::write('core',__METHOD__.'(): Directory \''.dirname($filepath).'\' is not writable.', OC_Log::ERROR);
|
|
return false;
|
|
} elseif(is_writable(dirname($filepath)) && file_exists($filepath) && !is_writable($filepath)) {
|
|
OC_Log::write('core',__METHOD__.'(): File \''.$filepath.'\' is not writable.', OC_Log::ERROR);
|
|
return false;
|
|
}
|
|
}
|
|
if (!$this->valid()) {
|
|
return false;
|
|
}
|
|
|
|
$retval = false;
|
|
switch($this->imagetype) {
|
|
case IMAGETYPE_GIF:
|
|
$retval = imagegif($this->resource, $filepath);
|
|
break;
|
|
case IMAGETYPE_JPEG:
|
|
$retval = imagejpeg($this->resource, $filepath);
|
|
break;
|
|
case IMAGETYPE_PNG:
|
|
$retval = imagepng($this->resource, $filepath);
|
|
break;
|
|
case IMAGETYPE_XBM:
|
|
$retval = imagexbm($this->resource, $filepath);
|
|
break;
|
|
case IMAGETYPE_WBMP:
|
|
case IMAGETYPE_BMP:
|
|
$retval = imagewbmp($this->resource, $filepath);
|
|
break;
|
|
default:
|
|
$retval = imagepng($this->resource, $filepath);
|
|
}
|
|
return $retval;
|
|
}
|
|
|
|
/**
|
|
* @brief Prints the image when called as $image().
|
|
*/
|
|
public function __invoke() {
|
|
return $this->show();
|
|
}
|
|
|
|
/**
|
|
* @returns Returns the image resource in any.
|
|
*/
|
|
public function resource() {
|
|
return $this->resource;
|
|
}
|
|
|
|
/**
|
|
* @returns Returns the raw image data.
|
|
*/
|
|
function data() {
|
|
ob_start();
|
|
$res = imagepng($this->resource);
|
|
if (!$res) {
|
|
OC_Log::write('core','OC_Image->data. Error getting image data.',OC_Log::ERROR);
|
|
}
|
|
return ob_get_clean();
|
|
}
|
|
|
|
/**
|
|
* @returns Returns a base64 encoded string suitable for embedding in a VCard.
|
|
*/
|
|
function __toString() {
|
|
return base64_encode($this->data());
|
|
}
|
|
|
|
/**
|
|
* (I'm open for suggestions on better method name ;)
|
|
* @brief Get the orientation based on EXIF data.
|
|
* @returns The orientation or -1 if no EXIF data is available.
|
|
*/
|
|
public function getOrientation() {
|
|
if(!is_callable('exif_read_data')){
|
|
OC_Log::write('core','OC_Image->fixOrientation() Exif module not enabled.', OC_Log::DEBUG);
|
|
return -1;
|
|
}
|
|
if(!$this->valid()) {
|
|
OC_Log::write('core','OC_Image->fixOrientation() No image loaded.', OC_Log::DEBUG);
|
|
return -1;
|
|
}
|
|
if(is_null($this->filepath) || !is_readable($this->filepath)) {
|
|
OC_Log::write('core','OC_Image->fixOrientation() No readable file path set.', OC_Log::DEBUG);
|
|
return -1;
|
|
}
|
|
$exif = @exif_read_data($this->filepath, 'IFD0');
|
|
if(!$exif) {
|
|
return -1;
|
|
}
|
|
if(!isset($exif['Orientation'])) {
|
|
return -1;
|
|
}
|
|
return $exif['Orientation'];
|
|
}
|
|
|
|
/**
|
|
* (I'm open for suggestions on better method name ;)
|
|
* @brief Fixes orientation based on EXIF data.
|
|
* @returns bool.
|
|
*/
|
|
public function fixOrientation() {
|
|
$o = $this->getOrientation();
|
|
OC_Log::write('core','OC_Image->fixOrientation() Orientation: '.$o, OC_Log::DEBUG);
|
|
$rotate = 0;
|
|
$flip = false;
|
|
switch($o) {
|
|
case -1:
|
|
return false; //Nothing to fix
|
|
break;
|
|
case 1:
|
|
$rotate = 0;
|
|
$flip = false;
|
|
break;
|
|
case 2: // Not tested
|
|
$rotate = 0;
|
|
$flip = true;
|
|
break;
|
|
case 3:
|
|
$rotate = 180;
|
|
$flip = false;
|
|
break;
|
|
case 4: // Not tested
|
|
$rotate = 180;
|
|
$flip = true;
|
|
break;
|
|
case 5: // Not tested
|
|
$rotate = 90;
|
|
$flip = true;
|
|
break;
|
|
case 6:
|
|
//$rotate = 90;
|
|
$rotate = 270;
|
|
$flip = false;
|
|
break;
|
|
case 7: // Not tested
|
|
$rotate = 270;
|
|
$flip = true;
|
|
break;
|
|
case 8:
|
|
$rotate = 90;
|
|
$flip = false;
|
|
break;
|
|
}
|
|
if($rotate) {
|
|
$res = imagerotate($this->resource, $rotate, -1);
|
|
if($res) {
|
|
if(imagealphablending($res, true)) {
|
|
if(imagesavealpha($res, true)) {
|
|
imagedestroy($this->resource);
|
|
$this->resource = $res;
|
|
return true;
|
|
} else {
|
|
OC_Log::write('core','OC_Image->fixOrientation() Error during alphasaving.', OC_Log::DEBUG);
|
|
return false;
|
|
}
|
|
} else {
|
|
OC_Log::write('core','OC_Image->fixOrientation() Error during alphablending.', OC_Log::DEBUG);
|
|
return false;
|
|
}
|
|
} else {
|
|
OC_Log::write('core','OC_Image->fixOrientation() Error during oriention fixing.', OC_Log::DEBUG);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Loads an image from a local file, a base64 encoded string or a resource created by an imagecreate* function.
|
|
* @param $imageref The path to a local file, a base64 encoded string or a resource created by an imagecreate* function or a file resource (file handle ).
|
|
* @returns An image resource or false on error
|
|
*/
|
|
public function load($imageref) {
|
|
if(is_resource($imageref)) {
|
|
if(get_resource_type($imageref) == 'gd') {
|
|
$this->resource = $imageref;
|
|
return $this->resource;
|
|
} elseif(in_array(get_resource_type($imageref), array('file','stream'))) {
|
|
return $this->loadFromFileHandle($imageref);
|
|
}
|
|
} elseif($this->loadFromFile($imageref) !== false) {
|
|
return $this->resource;
|
|
} elseif($this->loadFromBase64($imageref) !== false) {
|
|
return $this->resource;
|
|
} elseif($this->loadFromData($imageref) !== false) {
|
|
return $this->resource;
|
|
} else {
|
|
OC_Log::write('core',__METHOD__.'(): couldn\'t load anything. Giving up!', OC_Log::DEBUG);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Loads an image from an open file handle.
|
|
* It is the responsibility of the caller to position the pointer at the correct place and to close the handle again.
|
|
* @param $handle
|
|
* @returns An image resource or false on error
|
|
*/
|
|
public function loadFromFileHandle($handle) {
|
|
OC_Log::write('core',__METHOD__.'(): Trying', OC_Log::DEBUG);
|
|
$contents = stream_get_contents($handle);
|
|
if($this->loadFromData($contents)) {
|
|
return $this->resource;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Loads an image from a local file.
|
|
* @param $imageref The path to a local file.
|
|
* @returns An image resource or false on error
|
|
*/
|
|
public function loadFromFile($imagepath=false) {
|
|
if(!is_file($imagepath) || !file_exists($imagepath) || !is_readable($imagepath)) {
|
|
// Debug output disabled because this method is tried before loadFromBase64?
|
|
OC_Log::write('core','OC_Image->loadFromFile, couldn\'t load: '.ellipsis($imagepath, 50), OC_Log::DEBUG);
|
|
return false;
|
|
}
|
|
$itype = exif_imagetype($imagepath);
|
|
switch($itype) {
|
|
case IMAGETYPE_GIF:
|
|
if (imagetypes() & IMG_GIF) {
|
|
$this->resource = imagecreatefromgif($imagepath);
|
|
} else {
|
|
OC_Log::write('core','OC_Image->loadFromFile, GIF images not supported: '.$imagepath, OC_Log::DEBUG);
|
|
}
|
|
break;
|
|
case IMAGETYPE_JPEG:
|
|
if (imagetypes() & IMG_JPG) {
|
|
$this->resource = imagecreatefromjpeg($imagepath);
|
|
} else {
|
|
OC_Log::write('core','OC_Image->loadFromFile, JPG images not supported: '.$imagepath, OC_Log::DEBUG);
|
|
}
|
|
break;
|
|
case IMAGETYPE_PNG:
|
|
if (imagetypes() & IMG_PNG) {
|
|
$this->resource = imagecreatefrompng($imagepath);
|
|
} else {
|
|
OC_Log::write('core','OC_Image->loadFromFile, PNG images not supported: '.$imagepath, OC_Log::DEBUG);
|
|
}
|
|
break;
|
|
case IMAGETYPE_XBM:
|
|
if (imagetypes() & IMG_XPM) {
|
|
$this->resource = imagecreatefromxbm($imagepath);
|
|
} else {
|
|
OC_Log::write('core','OC_Image->loadFromFile, XBM/XPM images not supported: '.$imagepath, OC_Log::DEBUG);
|
|
}
|
|
break;
|
|
case IMAGETYPE_WBMP:
|
|
case IMAGETYPE_BMP:
|
|
if (imagetypes() & IMG_WBMP) {
|
|
$this->resource = imagecreatefromwbmp($imagepath);
|
|
} else {
|
|
OC_Log::write('core','OC_Image->loadFromFile, (W)BMP images not supported: '.$imagepath, OC_Log::DEBUG);
|
|
}
|
|
break;
|
|
/*
|
|
case IMAGETYPE_TIFF_II: // (intel byte order)
|
|
break;
|
|
case IMAGETYPE_TIFF_MM: // (motorola byte order)
|
|
break;
|
|
case IMAGETYPE_JPC:
|
|
break;
|
|
case IMAGETYPE_JP2:
|
|
break;
|
|
case IMAGETYPE_JPX:
|
|
break;
|
|
case IMAGETYPE_JB2:
|
|
break;
|
|
case IMAGETYPE_SWC:
|
|
break;
|
|
case IMAGETYPE_IFF:
|
|
break;
|
|
case IMAGETYPE_ICO:
|
|
break;
|
|
case IMAGETYPE_SWF:
|
|
break;
|
|
case IMAGETYPE_PSD:
|
|
break;
|
|
*/
|
|
default:
|
|
|
|
// this is mostly file created from encrypted file
|
|
$this->resource = imagecreatefromstring(\OC_Filesystem::file_get_contents(\OC_Filesystem::getLocalPath($imagepath)));
|
|
$itype = IMAGETYPE_PNG;
|
|
OC_Log::write('core','OC_Image->loadFromFile, Default', OC_Log::DEBUG);
|
|
break;
|
|
}
|
|
if($this->valid()) {
|
|
$this->imagetype = $itype;
|
|
$this->filepath = $imagepath;
|
|
}
|
|
return $this->resource;
|
|
}
|
|
|
|
/**
|
|
* @brief Loads an image from a string of data.
|
|
* @param $str A string of image data as read from a file.
|
|
* @returns An image resource or false on error
|
|
*/
|
|
public function loadFromData($str) {
|
|
if(is_resource($str)) {
|
|
return false;
|
|
}
|
|
$this->resource = @imagecreatefromstring($str);
|
|
if(!$this->resource) {
|
|
OC_Log::write('core','OC_Image->loadFromData, couldn\'t load', OC_Log::DEBUG);
|
|
return false;
|
|
}
|
|
return $this->resource;
|
|
}
|
|
|
|
/**
|
|
* @brief Loads an image from a base64 encoded string.
|
|
* @param $str A string base64 encoded string of image data.
|
|
* @returns An image resource or false on error
|
|
*/
|
|
public function loadFromBase64($str) {
|
|
if(!is_string($str)) {
|
|
return false;
|
|
}
|
|
$data = base64_decode($str);
|
|
if($data) { // try to load from string data
|
|
$this->resource = @imagecreatefromstring($data);
|
|
if(!$this->resource) {
|
|
OC_Log::write('core','OC_Image->loadFromBase64, couldn\'t load', OC_Log::DEBUG);
|
|
return false;
|
|
}
|
|
return $this->resource;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Resizes the image preserving ratio.
|
|
* @param $maxsize The maximum size of either the width or height.
|
|
* @returns bool
|
|
*/
|
|
public function resize($maxsize) {
|
|
if(!$this->valid()) {
|
|
OC_Log::write('core',__METHOD__.'(): No image loaded', OC_Log::ERROR);
|
|
return false;
|
|
}
|
|
$width_orig=imageSX($this->resource);
|
|
$height_orig=imageSY($this->resource);
|
|
$ratio_orig = $width_orig/$height_orig;
|
|
|
|
if ($ratio_orig > 1) {
|
|
$new_height = round($maxsize/$ratio_orig);
|
|
$new_width = $maxsize;
|
|
} else {
|
|
$new_width = round($maxsize*$ratio_orig);
|
|
$new_height = $maxsize;
|
|
}
|
|
|
|
$process = imagecreatetruecolor(round($new_width), round($new_height));
|
|
if ($process == false) {
|
|
OC_Log::write('core',__METHOD__.'(): Error creating true color image',OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
|
|
imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $new_width, $new_height, $width_orig, $height_orig);
|
|
if ($process == false) {
|
|
OC_Log::write('core',__METHOD__.'(): Error resampling process image '.$new_width.'x'.$new_height,OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
imagedestroy($this->resource);
|
|
$this->resource = $process;
|
|
return true;
|
|
}
|
|
|
|
public function preciseResize($width, $height) {
|
|
if (!$this->valid()) {
|
|
OC_Log::write('core',__METHOD__.'(): No image loaded', OC_Log::ERROR);
|
|
return false;
|
|
}
|
|
$width_orig=imageSX($this->resource);
|
|
$height_orig=imageSY($this->resource);
|
|
$process = imagecreatetruecolor($width, $height);
|
|
|
|
if ($process == false) {
|
|
OC_Log::write('core',__METHOD__.'(): Error creating true color image',OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
|
|
imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
|
|
if ($process == false) {
|
|
OC_Log::write('core',__METHOD__.'(): Error resampling process image '.$width.'x'.$height,OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
imagedestroy($this->resource);
|
|
$this->resource = $process;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Crops the image to the middle square. If the image is already square it just returns.
|
|
* @param int maximum size for the result (optional)
|
|
* @returns bool for success or failure
|
|
*/
|
|
public function centerCrop($size=0) {
|
|
if(!$this->valid()) {
|
|
OC_Log::write('core','OC_Image->centerCrop, No image loaded', OC_Log::ERROR);
|
|
return false;
|
|
}
|
|
$width_orig=imageSX($this->resource);
|
|
$height_orig=imageSY($this->resource);
|
|
if($width_orig === $height_orig and $size==0) {
|
|
return true;
|
|
}
|
|
$ratio_orig = $width_orig/$height_orig;
|
|
$width = $height = min($width_orig, $height_orig);
|
|
|
|
if ($ratio_orig > 1) {
|
|
$x = ($width_orig/2) - ($width/2);
|
|
$y = 0;
|
|
} else {
|
|
$y = ($height_orig/2) - ($height/2);
|
|
$x = 0;
|
|
}
|
|
if($size>0){
|
|
$targetWidth=$size;
|
|
$targetHeight=$size;
|
|
}else{
|
|
$targetWidth=$width;
|
|
$targetHeight=$height;
|
|
}
|
|
$process = imagecreatetruecolor($targetWidth, $targetHeight);
|
|
if ($process == false) {
|
|
OC_Log::write('core','OC_Image->centerCrop. Error creating true color image',OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $targetWidth, $targetHeight, $width, $height);
|
|
if ($process == false) {
|
|
OC_Log::write('core','OC_Image->centerCrop. Error resampling process image '.$width.'x'.$height,OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
imagedestroy($this->resource);
|
|
$this->resource = $process;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @brief Crops the image from point $x$y with dimension $wx$h.
|
|
* @param $x Horizontal position
|
|
* @param $y Vertical position
|
|
* @param $w Width
|
|
* @param $h Hight
|
|
* @returns bool for success or failure
|
|
*/
|
|
public function crop($x, $y, $w, $h) {
|
|
if(!$this->valid()) {
|
|
OC_Log::write('core',__METHOD__.'(): No image loaded', OC_Log::ERROR);
|
|
return false;
|
|
}
|
|
$process = imagecreatetruecolor($w, $h);
|
|
if ($process == false) {
|
|
OC_Log::write('core',__METHOD__.'(): Error creating true color image',OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h);
|
|
if ($process == false) {
|
|
OC_Log::write('core',__METHOD__.'(): Error resampling process image '.$w.'x'.$h,OC_Log::ERROR);
|
|
imagedestroy($process);
|
|
return false;
|
|
}
|
|
imagedestroy($this->resource);
|
|
$this->resource = $process;
|
|
return true;
|
|
}
|
|
|
|
public function destroy(){
|
|
if($this->valid()){
|
|
imagedestroy($this->resource);
|
|
}
|
|
$this->resource=null;
|
|
}
|
|
|
|
public function __destruct(){
|
|
$this->destroy();
|
|
}
|
|
}
|