do not cache incomplete thumbnails

diff --git a/src/thumb_standard.c b/src/thumb_standard.c
index 71a8e82..eb26b66 100644 (file)
--- a/src/thumb_standard.c
+++ b/src/thumb_standard.c
@@ -419,6 +419,7 @@ static GdkPixbuf *thumb_loader_std_finish(ThumbLoaderStd *tl, GdkPixbuf *pixbuf,
                        if (sw > cache_w || sh > cache_h || shrunk)
                                {
                                gint thumb_w, thumb_h;
+                               struct stat st;
 
                                if (pixbuf_scale_aspect(cache_w, cache_h, sw, sh,
                                                                  &thumb_w, &thumb_h))
@@ -432,7 +433,14 @@ static GdkPixbuf *thumb_loader_std_finish(ThumbLoaderStd *tl, GdkPixbuf *pixbuf,
                                        g_object_ref(G_OBJECT(pixbuf_thumb));
                                        }
 
-                               thumb_loader_std_save(tl, pixbuf_thumb);
+                               /* do not save the thumbnail if the source file has changed meanwhile -
+                                  the thumbnail is most probably broken */
+                               if (stat_utf8(tl->fd->path, &st) && 
+                                   tl->source_mtime == st.st_mtime &&
+                                   tl->source_size == st.st_size)
+                                       {
+                                       thumb_loader_std_save(tl, pixbuf_thumb);
+                                       }
                                }
                        }
                else if (tl->cache_hit &&