From 64177a52ec713e10efae6bc3e715f3e5150d4345 Mon Sep 17 00:00:00 2001
From: ahocevar <andreas.hocevar@gmail.com>
Date: Tue, 18 Dec 2012 14:07:34 +0100
Subject: [PATCH] Enable fade-in for tiles from cache when we have a backbuffer

---
 lib/OpenLayers/TileManager.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/OpenLayers/TileManager.js b/lib/OpenLayers/TileManager.js
index cc06c5ab0f..bbf04a1021 100644
--- a/lib/OpenLayers/TileManager.js
+++ b/lib/OpenLayers/TileManager.js
@@ -329,6 +329,10 @@ OpenLayers.TileManager = OpenLayers.Class({
         // only use image from cache if it is not on a layer already
         if (img && (!img.parentNode ||
                  OpenLayers.Element.hasClass(img.parentNode, 'olBackBuffer'))) {
+            if (tile.layer.backBuffer) {
+                img.style.opacity = 0;
+                img.style.visibility = 'hidden';
+            }
             tile.setImage(img);
             OpenLayers.Util.removeItem(this.tileCacheIndex, tile.url);
             this.tileCacheIndex.push(tile.url);