56 lines
1.7 KiB
PHP
56 lines
1.7 KiB
PHP
<?php
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require_once('../../../lib/base.php');
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OC_JSON::checkLoggedIn();
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OC_JSON::checkAppEnabled('gallery');
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function CroppedThumbnail($imgSrc,$thumbnail_width,$thumbnail_height) { //$imgSrc is a FILE - Returns an image resource.
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//getting the image dimensions
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list($width_orig, $height_orig) = getimagesize($imgSrc);
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switch (strtolower(substr($imgSrc, strrpos($imgSrc, '.')+1))) {
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case "jpeg":
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case "jpg":
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case "tiff":
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$myImage = imagecreatefromjpeg($imgSrc);
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break;
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case "png":
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$myImage = imagecreatefrompng($imgSrc);
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break;
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default:
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exit();
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}
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$ratio_orig = $width_orig/$height_orig;
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if ($thumbnail_width/$thumbnail_height > $ratio_orig) {
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$new_height = $thumbnail_width/$ratio_orig;
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$new_width = $thumbnail_width;
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} else {
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$new_width = $thumbnail_height*$ratio_orig;
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$new_height = $thumbnail_height;
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}
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$x_mid = $new_width/2; //horizontal middle
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$y_mid = $new_height/2; //vertical middle
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$process = imagecreatetruecolor(round($new_width), round($new_height));
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imagecopyresampled($process, $myImage, 0, 0, 0, 0, $new_width, $new_height, $width_orig, $height_orig);
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$thumb = imagecreatetruecolor($thumbnail_width, $thumbnail_height);
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imagecopyresampled($thumb, $process, 0, 0, ($x_mid-($thumbnail_width/2)), ($y_mid-($thumbnail_height/2)), $thumbnail_width, $thumbnail_height, $thumbnail_width, $thumbnail_height);
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imagedestroy($process);
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imagedestroy($myImage);
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return $thumb;
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}
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$box_size = 200;
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$img = $_GET['img'];
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$tmp = OC::$CONFIG_DATADIRECTORY . $img;
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header('Content-Type: image/png');
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$image = CroppedThumbnail($tmp, $box_size, $box_size);
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imagepng($image);
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imagedestroy($image);
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?>
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