update some comments in preview lib

diff --git a/lib/preview.php b/lib/preview.php
index 8ecad1591577db89432218db419d70d6522c774f..0a8ab438367c810e615405993986c63ccb0f5740 100755 (executable)
--- a/lib/preview.php
+++ b/lib/preview.php
@@ -348,10 +348,6 @@ class Preview {
 
        /**
         * @brief return a preview of a file
-        * @param $file The path to the file where you want a thumbnail from
-        * @param $maxX The maximum X size of the thumbnail. It can be smaller depending on the shape of the image
-        * @param $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image
-        * @param $scaleup Scale smaller images up to the thumbnail size or not. Might look ugly
         * @return image
        */
        public function getPreview() {
@@ -419,10 +415,6 @@ class Preview {
 
        /**
         * @brief show preview
-        * @param $file The path to the file where you want a thumbnail from
-        * @param $maxX The maximum X size of the thumbnail. It can be smaller depending on the shape of the image
-        * @param $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image
-        * @param $scaleup Scale smaller images up to the thumbnail size or not. Might look ugly
         * @return void
        */
        public function showPreview() {
@@ -431,6 +423,7 @@ class Preview {
                        $this->getPreview();
                }
                $this->preview->show();
+               return;
        }
 
        /**
@@ -486,7 +479,7 @@ class Preview {
 
                $image->preciseResize($newXsize, $newYsize);
 
-               if($newXsize == $x && $newYsize === $y) {
+               if($newXsize === $x && $newYsize === $y) {
                        $this->preview = $image;
                        return;
                }