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-rw-r--r--program/lib/Roundcube/rcube_image.php23
1 files changed, 18 insertions, 5 deletions
diff --git a/program/lib/Roundcube/rcube_image.php b/program/lib/Roundcube/rcube_image.php
index 9695022da..a55ba1600 100644
--- a/program/lib/Roundcube/rcube_image.php
+++ b/program/lib/Roundcube/rcube_image.php
@@ -77,7 +77,8 @@ class rcube_image
}
/**
- * Resize image to a given size
+ * Resize image to a given size. Use only to shrink an image.
+ * If an image is smaller than specified size it will be not resized.
*
* @param int $size Max width/height size
* @param string $filename Output filename
@@ -131,19 +132,30 @@ class rcube_image
if ($props['gd_type']) {
if ($props['gd_type'] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) {
$image = imagecreatefromjpeg($this->image_file);
+ $type = 'jpg';
}
else if($props['gd_type'] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) {
$image = imagecreatefromgif($this->image_file);
+ $type = 'gid';
}
else if($props['gd_type'] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')) {
$image = imagecreatefrompng($this->image_file);
+ $type = 'png';
}
else {
// @TODO: print error to the log?
return false;
}
- $scale = $size / max($props['width'], $props['height']);
+ $scale = $size / max($props['width'], $props['height']);
+
+ // Imagemagick resize is implemented in shrinking mode (see -resize argument above)
+ // we do the same here, if an image is smaller than specified size
+ // we do nothing but copy original file to destination file
+ if ($scale > 1) {
+ return $this->image_file == $filename || copy($this->image_file, $filename) ? $type : false;
+ }
+
$width = $props['width'] * $scale;
$height = $props['height'] * $scale;
@@ -162,15 +174,12 @@ class rcube_image
if ($props['gd_type'] == IMAGETYPE_JPEG) {
$result = imagejpeg($image, $filename, 75);
- $type = 'jpg';
}
elseif($props['gd_type'] == IMAGETYPE_GIF) {
$result = imagegif($image, $filename);
- $type = 'gid';
}
elseif($props['gd_type'] == IMAGETYPE_PNG) {
$result = imagepng($image, $filename, 6, PNG_ALL_FILTERS);
- $type = 'png';
}
if ($result) {
@@ -245,6 +254,10 @@ class rcube_image
else if ($type == self::TYPE_PNG) {
$result = imagepng($image, $filename, 6, PNG_ALL_FILTERS);
}
+
+ if ($result) {
+ return true;
+ }
}
// @TODO: print error to the log?