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<?php
/**
* elFinder Plugin Watermark
*
* Print watermark on file upload.
*
* ex. binding, configure on connector options
* $opts = array(
* 'bind' => array(
* 'upload.presave' => array(
* 'Plugin.Watermark.onUpLoadPreSave'
* )
* ),
* // global configure (optional)
* 'plugin' => array(
* 'Watermark' => 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
* 'interlace' => IMG_GIF|IMG_JPG, // Set interlacebit image formats ( bit-field )
* 'offDropWith' => null // To disable it if it is dropped with pressing the meta key
* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value
* // In case of using any key, specify it as an array
* )
* ),
* // each volume configure (optional)
* 'roots' => array(
* array(
* 'driver' => 'LocalFileSystem',
* 'path' => '/path/to/files/',
* 'URL' => 'http://localhost/to/files/'
* 'plugin' => array(
* 'Watermark' => 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
* 'interlace' => IMG_GIF|IMG_JPG, // Set interlacebit image formats ( bit-field )
* 'offDropWith' => null // To disable it if it is dropped with pressing the meta key
* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value
* // In case of using any key, specify it as an array
* )
* )
* )
* )
* );
*
* @package elfinder
* @author Naoki Sawada
* @license New BSD
*/
class elFinderPluginWatermark extends elFinderPlugin {
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
'interlace' => IMG_GIF|IMG_JPG, // Set interlacebit image formats ( bit-field )
'offDropWith' => null // To disable it if it is dropped with pressing the meta key
// Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value
// In case of using any key, specify it as an array
);
$this->opts = array_merge($defaults, $opts);
}
public function onUpLoadPreSave(&$thash, &$name, $src, $elfinder, $volume) {
$opts = $this->getCurrentOpts($volume);
if (! $this->iaEnabled($opts)) {
return false;
}
$imageType = null;
$srcImgInfo = null;
if (extension_loaded('fileinfo') && function_exists('mime_content_type')) {
$mime = mime_content_type($src);
if (substr($mime, 0, 5) !== 'image') {
return false;
}
}
if (extension_loaded('exif') && function_exists('exif_imagetype')) {
$imageType = exif_imagetype($src);
} else {
$srcImgInfo = getimagesize($src);
if ($srcImgInfo === false) {
return false;
}
$imageType = $srcImgInfo[2];
}
// check target image type
$imgTypes = array(
IMAGETYPE_GIF => IMG_GIF,
IMAGETYPE_JPEG => IMG_JPEG,
IMAGETYPE_PNG => IMG_PNG,
IMAGETYPE_BMP => IMG_WBMP,
IMAGETYPE_WBMP => IMG_WBMP
);
if (! isset($imgTypes[$imageType]) || ! ($opts['targetType'] & $imgTypes[$imageType])) {
return false;
}
// check Animation Gif
if ($imageType === IMAGETYPE_GIF && elFinder::isAnimationGif($src)) {
return false;
}
// check Animation Png
if ($imageType === IMAGETYPE_PNG && elFinder::isAnimationPng($src)) {
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;
}
if (! $srcImgInfo) {
$srcImgInfo = getimagesize($src);
}
$watermark = $opts['source'];
$marginLeft = $opts['marginRight'];
$marginBottom = $opts['marginBottom'];
$quality = $opts['quality'];
$transparency = $opts['transparency'];
// check target image size
if ($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;
// check interlace
$opts['interlace'] = ($opts['interlace'] & $imgTypes[$imageType]);
if (class_exists('Imagick', false)) {
return $this->watermarkPrint_imagick($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $opts);
} else {
return $this->watermarkPrint_gd($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $srcImgInfo, $opts);
}
}
private function watermarkPrint_imagick($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $opts) {
try { throw new Exception("Error Processing Request", 1);
// 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);
}
// set interlace
$opts['interlace'] && $img->setInterlaceScheme(Imagick::INTERLACE_PLANE);
$result = $img->writeImage($src);
$img->clear();
$img->destroy();
$watermark->clear();
$watermark->destroy();
return $result ? true : false;
} catch (Exception $e) {
$ermsg = $e->getMessage();
$ermsg && trigger_error($ermsg);
return false;
}
}
private function watermarkPrint_gd($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $srcImgInfo, $opts) {
$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 as watermark image';
}
break;
case 'image/jpeg':
if (imagetypes() & IMG_JPG) {
$oWatermarkImg = imagecreatefromjpeg($watermark) ;
} else {
$ermsg = 'JPEG images are not supported as watermark image';
}
break;
case 'image/png':
if (imagetypes() & IMG_PNG) {
$oWatermarkImg = imagecreatefrompng($watermark) ;
} else {
$ermsg = 'PNG images are not supported as watermark image';
}
break;
case 'image/wbmp':
if (imagetypes() & IMG_WBMP) {
$oWatermarkImg = imagecreatefromwbmp($watermark);
} else {
$ermsg = 'WBMP images are not supported as watermark image';
}
break;
default:
$oWatermarkImg = false;
$ermsg = $watermarkImgInfo['mime'].' images are not supported as watermark image';
break;
}
if (! $ermsg) {
switch ($srcImgInfo['mime']) {
case 'image/gif':
if (imagetypes() & IMG_GIF) {
$oSrcImg = imagecreatefromgif($src);
} else {
$ermsg = 'GIF images are not supported as source image';
}
break;
case 'image/jpeg':
if (imagetypes() & IMG_JPG) {
$oSrcImg = imagecreatefromjpeg($src) ;
} else {
$ermsg = 'JPEG images are not supported as source image';
}
break;
case 'image/png':
if (imagetypes() & IMG_PNG) {
$oSrcImg = imagecreatefrompng($src) ;
} else {
$ermsg = 'PNG images are not supported as source image';
}
break;
case 'image/wbmp':
if (imagetypes() & IMG_WBMP) {
$oSrcImg = imagecreatefromwbmp($src);
} else {
$ermsg = 'WBMP images are not supported as source image';
}
break;
default:
$oSrcImg = false;
$ermsg = $srcImgInfo['mime'].' images are not supported as source image';
break;
}
}
if ($ermsg || false === $oSrcImg || false === $oWatermarkImg) {
$ermsg && trigger_error($ermsg);
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);
}
// set interlace
$opts['interlace'] && imageinterlace($oSrcImg, true);
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;
}
}
|