From d6f6b828f1c32d36ea829ee2c673803803b890ce Mon Sep 17 00:00:00 2001
From: ahocevar <andreas.hocevar@gmail.com>
Date: Wed, 26 Sep 2012 18:48:57 +0200
Subject: [PATCH] preventDefault on mousedown

This is needed to avoid native image dragging.
---
 src/ol/mapbrowserevent.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ol/mapbrowserevent.js b/src/ol/mapbrowserevent.js
index cf12f72678..c580159512 100644
--- a/src/ol/mapbrowserevent.js
+++ b/src/ol/mapbrowserevent.js
@@ -215,6 +215,9 @@ ol.MapBrowserEventHandler.prototype.dragstart_ = function(browserEvent) {
               goog.events.EventType.MOUSEUP,
           this.dragend_, false, this)
     ];
+    if (browserEvent.type === goog.events.EventType.MOUSEDOWN) {
+      browserEvent.preventDefault();
+    }
     var newEvent = new ol.MapBrowserEvent(
         ol.MapBrowserEvent.EventType.DRAGSTART, this.map_, browserEvent);
     this.dispatchEvent(newEvent);