Now the file preview on images are scaled down.

2 files changed, 31 insertions, 10 deletions

diff --git a/forum/utils/file.php b/forum/utils/file.php
index 25cb4c2..b1f4e50 100644
--- a/forum/utils/file.php
+++ b/forum/utils/file.php
@@ -3,6 +3,7 @@
 include_once("config.php");
 include_once($UTIL_DIR . "/mimetypes.php");
 include_once($UTIL_DIR . "/files.php");
+include_once($UTIL_DIR . "/imagecache.php");
 
 function getFile($fid)
 {
@@ -30,26 +31,47 @@ function getFile($fid)
 
 function getFilePreview($fid)
 {
-	global $DATA_DIR, $PERMSTORE, $MIME_TYPES;
+	global $DATA_DIR, $UTIL_DIR, $PERMSTORE, $MIME_TYPES;
 	$files = new Files($DATA_DIR . "/files.xml");
 	$file = $files->getFile($fid);
 	
 	$filename = $PERMSTORE . "/" . $file->fid;
 	
-	if(strstr($file->mimetype, "image")) {
+	if(strstr($file->mimetype, "image/")) {
 		header('Content-Description: File Transfer');
 		header('Content-Type: ' . $file->mimetype);
-		header('Content-Length: ' . filesize($filename));
-		header('Content-Disposition: inline; filename=' . basename($file->name));
-		readfile($filename); 
+
+		switch($file->mimetype) {
+		case "image/png":
+			$image = imagecreatefrompng($filename);
+			$image = rescale($image);
+			imagepng($image);
+			break;
+		case "image/jpeg":
+			$image = imagecreatefromjpeg($filename);
+			$image = rescale($image);
+			imagejpeg($image);
+			echo "@";
+			break;
+		case "image/gif":
+			$image = imagecreatefromgif($filename);
+			$image = rescale($image);
+			imagegif($image);
+			break;
+		}
+
+		imagedestroy($image);
 	} else {
+		header('Content-Description: File Transfer');
 		header("Content-type: image/png");
+
 		$im = @imagecreate(8 + strlen($file->name) * 5, 20)
 			or die("Cannot Initialize new GD image stream");
 		$background_color = imagecolorallocate($im, 0, 0, 0);
 		$text_color = imagecolorallocate($im, 233, 14, 91);
 		imagestring($im, 1, 5, 5,  $file->name, $text_color);
 		imagepng($im);
+
 		imagedestroy($im);
 	}
 }
diff --git a/forum/utils/imagecache.php b/forum/utils/imagecache.php
index 0c18e1a..aa86c97 100644
--- a/forum/utils/imagecache.php
+++ b/forum/utils/imagecache.php
@@ -4,14 +4,13 @@ include_once("config.php");
 include_once($UTIL_DIR . "/ping.php");
 
 
-function rescale($image) {
-
-	$maxwidth = 300;
-	$maxheight = 240;
-
+function rescale($image, $maxwidth = 300, $maxheight = 240)
+{
 	$width = imagesx($image);
 	$height = imagesy($image);
 
+	if($width <= $maxwidth && $height <= $maxheight) return $image;
+
 	$scale = 1;
 	if($width > $maxwidth) $scale = $width / $maxwidth;
 	if($height / $scale > $maxheight) $scale = $height / $maxheight;