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plugin.php
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plugin.php
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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
* '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;
}
}