Viewing file:  plugin.php (6.27 KB) -rw-r--r--
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<?php
class Watermark
{
function onAfterFileUpload($currentFolder, $uploadedFile, $sFilePath)
{
global $config;
$watermarkSettings = $config['Plugin_Watermark'];
$this->createWatermark($sFilePath, $watermarkSettings['source'], $watermarkSettings['marginRight'],
$watermarkSettings['marginBottom'], $watermarkSettings['quality'], $watermarkSettings['transparency']);
return true;
}
function createWatermark($sourceFile, $watermarkFile, $marginLeft = 5, $marginBottom = 5, $quality = 90, $transparency = 100)
{
if (!file_exists($watermarkFile)) {
$watermarkFile = dirname(__FILE__) . "/" . $watermarkFile;
}
if (!file_exists($watermarkFile)) {
return false;
}
$watermarkImageAttr = @getimagesize($watermarkFile);
$sourceImageAttr = @getimagesize($sourceFile);
if ($sourceImageAttr === false || $watermarkImageAttr === false) {
return false;
}
switch ($watermarkImageAttr['mime'])
{
case 'image/gif':
{
if (@imagetypes() & IMG_GIF) {
$oWatermarkImage = @imagecreatefromgif($watermarkFile);
} else {
$ermsg = 'GIF images are not supported';
}
}
break;
case 'image/jpeg':
{
if (@imagetypes() & IMG_JPG) {
$oWatermarkImage = @imagecreatefromjpeg($watermarkFile) ;
} else {
$ermsg = 'JPEG images are not supported';
}
}
break;
case 'image/png':
{
if (@imagetypes() & IMG_PNG) {
$oWatermarkImage = @imagecreatefrompng($watermarkFile) ;
$k = max($sourceImageAttr[0], $sourceImageAttr[1]) * 0.16 / $watermarkImageAttr[0];
$newWatermarkImageAttr[0] = round($watermarkImageAttr[0] * $k);
$newWatermarkImageAttr[1] = round($watermarkImageAttr[1] * $k);
// $newWatermarkImageAttr[0] = $newWatermarkImageAttr[1] = 100;
$oNewWatermarkImage = imagecreatetruecolor($newWatermarkImageAttr[0], $newWatermarkImageAttr[1]);
imagealphablending($oNewWatermarkImage, false);
imagesavealpha($oNewWatermarkImage, true);
imagecopyresampled($oNewWatermarkImage, $oWatermarkImage, 0, 0, 0, 0, $newWatermarkImageAttr[0], $newWatermarkImageAttr[1], $watermarkImageAttr[0], $watermarkImageAttr[1]);
$watermarkImageAttr[0] = $newWatermarkImageAttr[0];
$watermarkImageAttr[1] = $newWatermarkImageAttr[1];
$oWatermarkImage = $oNewWatermarkImage;
} else {
$ermsg = 'PNG images are not supported';
}
}
break;
case 'image/wbmp':
{
if (@imagetypes() & IMG_WBMP) {
$oWatermarkImage = @imagecreatefromwbmp($watermarkFile);
} else {
$ermsg = 'WBMP images are not supported';
}
}
break;
default:
$ermsg = $watermarkImageAttr['mime'].' images are not supported';
break;
}
switch ($sourceImageAttr['mime'])
{
case 'image/gif':
{
if (@imagetypes() & IMG_GIF) {
$oImage = @imagecreatefromgif($sourceFile);
} else {
$ermsg = 'GIF images are not supported';
}
}
break;
case 'image/jpeg':
{
if (@imagetypes() & IMG_JPG) {
$oImage = @imagecreatefromjpeg($sourceFile) ;
} else {
$ermsg = 'JPEG images are not supported';
}
}
break;
case 'image/png':
{
if (@imagetypes() & IMG_PNG) {
$oImage = @imagecreatefrompng($sourceFile) ;
} else {
$ermsg = 'PNG images are not supported';
}
}
break;
case 'image/wbmp':
{
if (@imagetypes() & IMG_WBMP) {
$oImage = @imagecreatefromwbmp($sourceFile);
} else {
$ermsg = 'WBMP images are not supported';
}
}
break;
default:
$ermsg = $sourceImageAttr['mime'].' images are not supported';
break;
}
if (isset($ermsg) || false === $oImage || false === $oWatermarkImage) {
return false;
}
$watermark_width = $watermarkImageAttr[0];
$watermark_height = $watermarkImageAttr[1];
$dest_x = $sourceImageAttr[0] - $watermark_width - $marginLeft;
$dest_y = $sourceImageAttr[1] - $watermark_height - $marginBottom;
if ($watermarkImageAttr['mime'] == 'image/png') {
imagecopy($oImage, $oWatermarkImage, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height);
}
else {
imagecopymerge($oImage, $oWatermarkImage, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, $transparency);
}
switch ($sourceImageAttr['mime'])
{
case 'image/gif':
imagegif($oImage, $sourceFile);
break;
case 'image/jpeg':
imagejpeg($oImage, $sourceFile, $quality);
break;
case 'image/png':
imagepng($oImage, $sourceFile);
break;
case 'image/wbmp':
imagewbmp($oImage, $sourceFile);
break;
}
imageDestroy($oImage);
imageDestroy($oWatermarkImage);
}
}
$watermark = new Watermark();
$config['Hooks']['AfterFileUpload'][] = array($watermark, 'onAfterFileUpload');
$config['Plugin_Watermark'] = array(
"source" => "logo.png",
"marginRight" => 5,
"marginBottom" => 5,
"quality" => 90,
"transparency" => 80,
);
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