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Watermark
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Editing: plugin.php
<?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 * 'ratio' => 0.2, // Ratio to original image (ratio > 0 and ratio <= 1) * 'position' => 'RB', // Position L(eft)/C(enter)/R(ight) and T(op)/M(edium)/B(ottom) * 'marginX' => 5, // Margin horizontal pixel * 'marginY' => 5, // Margin vertical 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, // Enabled by default. 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 * 'onDropWith' => null // Disabled by default. To enable 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 * 'ratio' => 0.2, // Ratio to original image (ratio > 0 and ratio <= 1) * 'position' => 'RB', // Position L(eft)/C(enter)/R(ight) and T(op)/M(edium)/B(ottom) * 'marginX' => 5, // Margin horizontal pixel * 'marginY' => 5, // Margin vertical 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, // Enabled by default. 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 * 'onDropWith' => null // Disabled by default. To enable 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 'ratio' => 0.2, // Ratio to original image (ratio > 0 and ratio <= 1) 'position' => 'RB', // Position L(eft)/C(enter)/R(ight) and T(op)/M(edium)/B(ottom) 'marginX' => 5, // Margin horizontal pixel 'marginY' => 5, // Margin vertical 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 'marginRight' => 0, // Deprecated - marginX should be used 'marginBottom' => 0, // Deprecated - marginY should be used 'disableWithContentSaveId' => true // Disable on URL upload with post data "contentSaveId" ); $this->opts = array_merge($defaults, $opts); } public function onUpLoadPreSave(&$thash, &$name, $src, $elfinder, $volume) { if (!$src) { return false; } $opts = $this->getCurrentOpts($volume); if (!$this->iaEnabled($opts, $elfinder)) { 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); if ($imageType === false) { return false; } } 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']; $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 = $watermarkImgInfo[1]; // Specified as a ratio to the image size if ($opts['ratio'] && $opts['ratio'] > 0 && $opts['ratio'] <= 1) { $maxW = $srcImgInfo[0] * $opts['ratio'] - ($opts['marginX'] * 2); $maxH = $srcImgInfo[1] * $opts['ratio'] - ($opts['marginY'] * 2); $dx = $dy = 0; if (($maxW >= $watermarkImgInfo[0] && $maxH >= $watermarkImgInfo[0]) || ($maxW <= $watermarkImgInfo[0] && $maxH <= $watermarkImgInfo[0])) { $dx = abs($srcImgInfo[0] - $watermarkImgInfo[0]); $dy = abs($srcImgInfo[1] - $watermarkImgInfo[1]); } else if ($maxW < $watermarkImgInfo[0]) { $dx = -1; } else { $dy = -1; } if ($dx < $dy) { $ww = $maxW; $wh = $watermarkImgInfo[1] * ($ww / $watermarkImgInfo[0]); } else { $wh = $maxH; $ww = $watermarkImgInfo[0] * ($wh / $watermarkImgInfo[1]); } $watermarkImgInfo[0] = $ww; $watermarkImgInfo[1] = $wh; } else { $opts['ratio'] = null; } $opts['position'] = strtoupper($opts['position']); // Set vertical position if (strpos($opts['position'], 'T') !== false) { // Top $dest_x = $opts['marginX']; } else if (strpos($opts['position'], 'M') !== false) { // Middle $dest_x = ($srcImgInfo[0] - $watermarkImgInfo[0]) / 2; } else { // Bottom $dest_x = $srcImgInfo[0] - $watermarkImgInfo[0] - max($opts['marginBottom'], $opts['marginX']); } // Set horizontal position if (strpos($opts['position'], 'L') !== false) { // Left $dest_y = $opts['marginY']; } else if (strpos($opts['position'], 'C') !== false) { // Middle $dest_y = ($srcImgInfo[1] - $watermarkImgInfo[1]) / 2; } else { // Right $dest_y = $srcImgInfo[1] - $watermarkImgInfo[1] - max($opts['marginRight'], $opts['marginY']); } // check interlace $opts['interlace'] = ($opts['interlace'] & $imgTypes[$imageType]); // Repeated use of Imagick::compositeImage() may cause PHP to hang, so disable it //if (class_exists('Imagick', false)) { // return $this->watermarkPrint_imagick($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $opts); //} else { elFinder::expandMemoryForGD(array($watermarkImgInfo, $srcImgInfo)); return $this->watermarkPrint_gd($src, $watermark, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $srcImgInfo, $opts); //} } private function watermarkPrint_imagick($src, $watermarkSrc, $dest_x, $dest_y, $quality, $transparency, $watermarkImgInfo, $opts) { try { // Open the original image $img = new Imagick($src); // Open the watermark $watermark = new Imagick($watermarkSrc); // zoom if ($opts['ratio']) { $watermark->scaleImage($watermarkImgInfo[0], $watermarkImgInfo[1]); } // Set transparency if (strtoupper($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) { // zoom if ($opts['ratio']) { $tmpImg = imagecreatetruecolor($watermarkImgInfo[0], $watermarkImgInfo[1]); imagealphablending($tmpImg, false); imagesavealpha($tmpImg, true); imagecopyresampled($tmpImg, $oWatermarkImg, 0, 0, 0, 0, $watermarkImgInfo[0], $watermarkImgInfo[1], imagesx($oWatermarkImg), imagesy($oWatermarkImg)); imageDestroy($oWatermarkImg); $oWatermarkImg = $tmpImg; $tmpImg = null; } switch ($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; } }
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