Файл: mg-core/script/elfinder/php/plugins/Watermark/plugin.php
Строк: 142
<?php
class elFinderPluginWatermark {
private $opts = array();
private $watermarkImgInfo = null;
public function __construct($opts) {
$defaults = array(
'enable' => true, // For control by volume driver
'source' => 'logo.png', // Path to Water mark image
'marginRight' => 5, // Margin right pixel
'marginBottom' => 5, // Margin bottom pixel
'quality' => 95, // JPEG image save quality
'transparency' => 70, // Water mark image transparency ( other than PNG )
'targetType' => IMG_GIF|IMG_JPG|IMG_PNG|IMG_WBMP, // Target image formats ( bit-field )
'targetMinPixel' => 200 // Target image minimum pixel size
);
$this->opts = array_merge($defaults, $opts);
}
public function onUpLoadPreSave(&$path, &$name, $src, $elfinder, $volume) {
$opts = $this->opts;
$volOpts = $volume->getOptionsPlugin('Watermark');
if (is_array($volOpts)) {
$opts = array_merge($this->opts, $volOpts);
}
if (! $opts['enable']) {
return false;
}
$srcImgInfo = @getimagesize($src);
if ($srcImgInfo === false) {
return false;
}
// check water mark image
if (! file_exists($opts['source'])) {
$opts['source'] = dirname(__FILE__) . "/" . $opts['source'];
}
if (is_readable($opts['source'])) {
$watermarkImgInfo = @getimagesize($opts['source']);
if (! $watermarkImgInfo) {
return false;
}
} else {
return false;
}
$watermark = $opts['source'];
$marginLeft = $opts['marginRight'];
$marginBottom = $opts['marginBottom'];
$quality = $opts['quality'];
$transparency = $opts['transparency'];
// check target image type
$imgTypes = array(
IMAGETYPE_GIF => IMG_GIF,
IMAGETYPE_JPEG => IMG_JPEG,
IMAGETYPE_PNG => IMG_PNG,
IMAGETYPE_WBMP => IMG_WBMP,
);
if (! ($opts['targetType'] & $imgTypes[$srcImgInfo[2]])) {
return false;
}
// check target image size
if ($opts['targetMinPixel'] > 0 && $opts['targetMinPixel'] > min($srcImgInfo[0], $srcImgInfo[1])) {
return false;
}
$watermark_width = $watermarkImgInfo[0];
$watermark_height = $watermarkImgInfo[1];
$dest_x = $srcImgInfo[0] - $watermark_width - $marginLeft;
$dest_y = $srcImgInfo[1] - $watermark_height - $marginBottom;
if (class_exists('Imagick')) {
return $this->watermarkPrint_imagick($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo);
} else {
return $this->watermarkPrint_gd($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $srcImgInfo);
}
}
private function watermarkPrint_imagick($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo) {
try {
// Open the original image
$img = new Imagick($src);
// Open the watermark
$watermark = new Imagick($watermark);
// Set transparency
if (strtoupper($watermark->getImageFormat()) !== 'PNG') {
$watermark->setImageOpacity($transparency/100);
}
// Overlay the watermark on the original image
$img->compositeImage($watermark, imagick::COMPOSITE_OVER, $dest_x, $dest_y);
// Set quality
if (strtoupper($img->getImageFormat()) === 'JPEG') {
$img->setImageCompression(imagick::COMPRESSION_JPEG);
$img->setCompressionQuality($quality);
}
$result = $img->writeImage($src);
$img->clear();
$img->destroy();
$watermark->clear();
$watermark->destroy();
return $result ? true : false;
} catch (Exception $e) {
return false;
}
}
private function watermarkPrint_gd($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $srcImgInfo) {
$watermark_width = $watermarkImgInfo[0];
$watermark_height = $watermarkImgInfo[1];
$ermsg = '';
switch ($watermarkImgInfo['mime']) {
case 'image/gif':
if (@imagetypes() & IMG_GIF) {
$oWatermarkImg = @imagecreatefromgif($watermark);
} else {
$ermsg = 'GIF images are not supported';
}
break;
case 'image/jpeg':
if (@imagetypes() & IMG_JPG) {
$oWatermarkImg = @imagecreatefromjpeg($watermark) ;
} else {
$ermsg = 'JPEG images are not supported';
}
break;
case 'image/png':
if (@imagetypes() & IMG_PNG) {
$oWatermarkImg = @imagecreatefrompng($watermark) ;
} else {
$ermsg = 'PNG images are not supported';
}
break;
case 'image/wbmp':
if (@imagetypes() & IMG_WBMP) {
$oWatermarkImg = @imagecreatefromwbmp($watermark);
} else {
$ermsg = 'WBMP images are not supported';
}
break;
default:
$oWatermarkImg = false;
$ermsg = $watermarkImgInfo['mime'].' images are not supported';
break;
}
if (! $ermsg) {
switch ($srcImgInfo['mime']) {
case 'image/gif':
if (@imagetypes() & IMG_GIF) {
$oSrcImg = @imagecreatefromgif($src);
} else {
$ermsg = 'GIF images are not supported';
}
break;
case 'image/jpeg':
if (@imagetypes() & IMG_JPG) {
$oSrcImg = @imagecreatefromjpeg($src) ;
} else {
$ermsg = 'JPEG images are not supported';
}
break;
case 'image/png':
if (@imagetypes() & IMG_PNG) {
$oSrcImg = @imagecreatefrompng($src) ;
} else {
$ermsg = 'PNG images are not supported';
}
break;
case 'image/wbmp':
if (@imagetypes() & IMG_WBMP) {
$oSrcImg = @imagecreatefromwbmp($src);
} else {
$ermsg = 'WBMP images are not supported';
}
break;
default:
$oSrcImg = false;
$ermsg = $srcImgInfo['mime'].' images are not supported';
break;
}
}
if ($ermsg || false === $oSrcImg || false === $oWatermarkImg) {
return false;
}
if ($srcImgInfo['mime'] === 'image/png') {
if (function_exists('imagecolorallocatealpha')) {
$bg = imagecolorallocatealpha($oSrcImg, 255, 255, 255, 127);
imagefill($oSrcImg, 0, 0 , $bg);
}
}
if ($watermarkImgInfo['mime'] === 'image/png') {
imagecopy($oSrcImg, $oWatermarkImg, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height);
} else {
imagecopymerge($oSrcImg, $oWatermarkImg, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, $transparency);
}
switch ($srcImgInfo['mime']) {
case 'image/gif':
imagegif($oSrcImg, $src);
break;
case 'image/jpeg':
imagejpeg($oSrcImg, $src, $quality);
break;
case 'image/png':
if (function_exists('imagesavealpha') && function_exists('imagealphablending')) {
imagealphablending($oSrcImg, false);
imagesavealpha($oSrcImg, true);
}
imagepng($oSrcImg, $src);
break;
case 'image/wbmp':
imagewbmp($oSrcImg, $src);
break;
}
imageDestroy($oSrcImg);
imageDestroy($oWatermarkImg);
return true;
}
}