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<?php
require_once('../../../lib/base.php');
OC_JSON::checkLoggedIn();
OC_JSON::checkAppEnabled('gallery');
function CroppedThumbnail($imgSrc,$thumbnail_width,$thumbnail_height) { //$imgSrc is a FILE - Returns an image resource.
//getting the image dimensions
if(! function_exists('imagecreatefromjpeg'))
OC_Log::write('gallery','GD module not installed',OC_Log::ERROR);
list($width_orig, $height_orig) = getimagesize($imgSrc);
switch (strtolower(substr($imgSrc, strrpos($imgSrc, '.')+1))) {
case "jpeg":
case "jpg":
case "tiff":
$myImage = imagecreatefromjpeg($imgSrc);
break;
case "png":
$myImage = imagecreatefrompng($imgSrc);
break;
default:
exit();
}
if(!$myImage) exit();
$ratio_orig = $width_orig/$height_orig;
if ($thumbnail_width/$thumbnail_height > $ratio_orig) {
$new_height = $thumbnail_width/$ratio_orig;
$new_width = $thumbnail_width;
} else {
$new_width = $thumbnail_height*$ratio_orig;
$new_height = $thumbnail_height;
}
$x_mid = $new_width/2; //horizontal middle
$y_mid = $new_height/2; //vertical middle
$process = imagecreatetruecolor(round($new_width), round($new_height));
imagecopyresampled($process, $myImage, 0, 0, 0, 0, $new_width, $new_height, $width_orig, $height_orig);
$thumb = imagecreatetruecolor($thumbnail_width, $thumbnail_height);
imagecopyresampled($thumb, $process, 0, 0, ($x_mid-($thumbnail_width/2)), ($y_mid-($thumbnail_height/2)), $thumbnail_width, $thumbnail_height, $thumbnail_width, $thumbnail_height);
imagedestroy($process);
imagedestroy($myImage);
return $thumb;
}
$box_size = 200;
$img = $_GET['img'];
$tmp = OC::$CONFIG_DATADIRECTORY . $img;
if(file_exists($tmp))
{
header('Content-Type: image/png');
$image = CroppedThumbnail($tmp, $box_size, $box_size);
imagepng($image);
imagedestroy($image);
}
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