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308 lines
9.4 KiB
308 lines
9.4 KiB
8 years ago
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<?php
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/**
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* elFinder Plugin Watermark
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*
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* Print watermark on file upload.
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*
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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.Watermark.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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* 'Watermark' => array(
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* 'enable' => true, // For control by volume driver
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* 'source' => 'logo.png', // Path to Water mark image
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* 'marginRight' => 5, // Margin right pixel
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* 'marginBottom' => 5, // Margin bottom pixel
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* 'quality' => 95, // JPEG image save quality
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* 'transparency' => 70, // Water mark image transparency ( other than PNG )
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* 'targetType' => IMG_GIF|IMG_JPG|IMG_PNG|IMG_WBMP, // Target image formats ( bit-field )
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* 'targetMinPixel' => 200, // Target image minimum pixel size
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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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* )
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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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* 'Watermark' => array(
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* 'enable' => true, // For control by volume driver
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* 'source' => 'logo.png', // Path to Water mark image
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* 'marginRight' => 5, // Margin right pixel
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* 'marginBottom' => 5, // Margin bottom pixel
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* 'quality' => 95, // JPEG image save quality
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* 'transparency' => 70, // Water mark image transparency ( other than PNG )
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* 'targetType' => IMG_GIF|IMG_JPG|IMG_PNG|IMG_WBMP, // Target image formats ( bit-field )
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* 'targetMinPixel' => 200, // Target image minimum pixel size
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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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* )
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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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*/
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class elFinderPluginWatermark extends elFinderPlugin {
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private $watermarkImgInfo = null;
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public function __construct($opts) {
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$defaults = array(
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'enable' => true, // For control by volume driver
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'source' => 'logo.png', // Path to Water mark image
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'marginRight' => 5, // Margin right pixel
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'marginBottom' => 5, // Margin bottom pixel
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'quality' => 95, // JPEG image save quality
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'transparency' => 70, // Water mark image transparency ( other than PNG )
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'targetType' => IMG_GIF|IMG_JPG|IMG_PNG|IMG_WBMP, // Target image formats ( bit-field )
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'targetMinPixel' => 200, // Target image minimum pixel size
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'offDropWith' => null // To disable it if it is dropped with pressing the meta key
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// Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value
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// In case of using any key, specify it as an array
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);
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$this->opts = array_merge($defaults, $opts);
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}
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public function onUpLoadPreSave(&$path, &$name, $src, $elfinder, $volume) {
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$opts = $this->getCurrentOpts($volume);
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if (! $this->iaEnabled($opts)) {
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return false;
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}
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$mime = mime_content_type($src);
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if (substr($mime, 0, 5) !== 'image') {
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return false;
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}
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$srcImgInfo = getimagesize($src);
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if ($srcImgInfo === false) {
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return false;
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}
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// check Animation Gif
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if (elFinder::isAnimationGif($src)) {
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return false;
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}
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// check water mark image
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if (! file_exists($opts['source'])) {
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$opts['source'] = dirname(__FILE__) . "/" . $opts['source'];
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}
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if (is_readable($opts['source'])) {
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$watermarkImgInfo = getimagesize($opts['source']);
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if (! $watermarkImgInfo) {
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return false;
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}
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} else {
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return false;
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}
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$watermark = $opts['source'];
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$marginLeft = $opts['marginRight'];
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$marginBottom = $opts['marginBottom'];
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$quality = $opts['quality'];
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$transparency = $opts['transparency'];
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// check target image type
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$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($imgTypes[$srcImgInfo[2]]) || ! ($opts['targetType'] & $imgTypes[$srcImgInfo[2]])) {
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return false;
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}
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// check target image size
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if ($opts['targetMinPixel'] > 0 && $opts['targetMinPixel'] > min($srcImgInfo[0], $srcImgInfo[1])) {
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return false;
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}
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$watermark_width = $watermarkImgInfo[0];
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$watermark_height = $watermarkImgInfo[1];
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$dest_x = $srcImgInfo[0] - $watermark_width - $marginLeft;
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$dest_y = $srcImgInfo[1] - $watermark_height - $marginBottom;
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if (class_exists('Imagick', false)) {
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return $this->watermarkPrint_imagick($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo);
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} else {
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return $this->watermarkPrint_gd($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $srcImgInfo);
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}
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}
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private function watermarkPrint_imagick($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo) {
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try {
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// Open the original image
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$img = new Imagick($src);
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// Open the watermark
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$watermark = new Imagick($watermark);
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// Set transparency
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if (strtoupper($watermark->getImageFormat()) !== 'PNG') {
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$watermark->setImageOpacity($transparency/100);
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}
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// Overlay the watermark on the original image
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$img->compositeImage($watermark, imagick::COMPOSITE_OVER, $dest_x, $dest_y);
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// Set quality
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if (strtoupper($img->getImageFormat()) === 'JPEG') {
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$img->setImageCompression(imagick::COMPRESSION_JPEG);
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$img->setCompressionQuality($quality);
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}
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$result = $img->writeImage($src);
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$img->clear();
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$img->destroy();
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$watermark->clear();
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$watermark->destroy();
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return $result ? true : false;
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} catch (Exception $e) {
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return false;
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}
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}
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private function watermarkPrint_gd($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $srcImgInfo) {
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$watermark_width = $watermarkImgInfo[0];
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$watermark_height = $watermarkImgInfo[1];
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$ermsg = '';
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switch ($watermarkImgInfo['mime']) {
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case 'image/gif':
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if (imagetypes() & IMG_GIF) {
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$oWatermarkImg = imagecreatefromgif($watermark);
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} else {
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$ermsg = 'GIF images are not supported';
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}
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break;
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case 'image/jpeg':
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if (imagetypes() & IMG_JPG) {
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$oWatermarkImg = imagecreatefromjpeg($watermark) ;
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} else {
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$ermsg = 'JPEG images are not supported';
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}
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break;
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case 'image/png':
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if (imagetypes() & IMG_PNG) {
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$oWatermarkImg = imagecreatefrompng($watermark) ;
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} else {
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$ermsg = 'PNG images are not supported';
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}
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break;
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case 'image/wbmp':
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if (imagetypes() & IMG_WBMP) {
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$oWatermarkImg = imagecreatefromwbmp($watermark);
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} else {
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$ermsg = 'WBMP images are not supported';
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}
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break;
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default:
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$oWatermarkImg = false;
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$ermsg = $watermarkImgInfo['mime'].' images are not supported';
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break;
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}
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if (! $ermsg) {
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switch ($srcImgInfo['mime']) {
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case 'image/gif':
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if (imagetypes() & IMG_GIF) {
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$oSrcImg = imagecreatefromgif($src);
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} else {
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$ermsg = 'GIF images are not supported';
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}
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break;
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case 'image/jpeg':
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if (imagetypes() & IMG_JPG) {
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$oSrcImg = imagecreatefromjpeg($src) ;
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} else {
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$ermsg = 'JPEG images are not supported';
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}
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break;
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case 'image/png':
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if (imagetypes() & IMG_PNG) {
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$oSrcImg = imagecreatefrompng($src) ;
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} else {
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$ermsg = 'PNG images are not supported';
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}
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break;
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case 'image/wbmp':
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if (imagetypes() & IMG_WBMP) {
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$oSrcImg = imagecreatefromwbmp($src);
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} else {
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$ermsg = 'WBMP images are not supported';
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}
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break;
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default:
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$oSrcImg = false;
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$ermsg = $srcImgInfo['mime'].' images are not supported';
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break;
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}
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}
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if ($ermsg || false === $oSrcImg || false === $oWatermarkImg) {
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return false;
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}
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if ($srcImgInfo['mime'] === 'image/png') {
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if (function_exists('imagecolorallocatealpha')) {
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$bg = imagecolorallocatealpha($oSrcImg, 255, 255, 255, 127);
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imagefill($oSrcImg, 0, 0 , $bg);
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}
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}
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if ($watermarkImgInfo['mime'] === 'image/png') {
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imagecopy($oSrcImg, $oWatermarkImg, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height);
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} else {
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imagecopymerge($oSrcImg, $oWatermarkImg, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, $transparency);
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}
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switch ($srcImgInfo['mime']) {
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case 'image/gif':
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imagegif($oSrcImg, $src);
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break;
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case 'image/jpeg':
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imagejpeg($oSrcImg, $src, $quality);
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break;
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case 'image/png':
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if (function_exists('imagesavealpha') && function_exists('imagealphablending')) {
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imagealphablending($oSrcImg, false);
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imagesavealpha($oSrcImg, true);
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}
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imagepng($oSrcImg, $src);
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break;
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case 'image/wbmp':
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imagewbmp($oSrcImg, $src);
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break;
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}
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imageDestroy($oSrcImg);
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imageDestroy($oWatermarkImg);
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return true;
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}
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}
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