From 8a147535dea2a74322e2bd02eed7dfbf36c2333f Mon Sep 17 00:00:00 2001
From: jalf <jalf@medical-insight.com>
Date: Tue, 29 Jan 2013 17:06:03 +0100
Subject: [PATCH] Clamp mouseclick coordinates to target element bounds

---
 include/util.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/util.js b/include/util.js
index 6f6c52a6..dd1f252f 100644
--- a/include/util.js
+++ b/include/util.js
@@ -298,7 +298,9 @@ Util.getEventPosition = function (e, obj, scale) {
     if (typeof scale === "undefined") {
         scale = 1;
     }
-    return {'x': (docX - pos.x) / scale, 'y': (docY - pos.y) / scale};
+    var x = Math.max(Math.min(docX - pos.x, obj.width-1), 0);
+	var y = Math.max(Math.min(docY - pos.y, obj.height-1), 0);
+    return {'x': x / scale, 'y': y / scale};
 };