From c5be6e1722d8a0bcebc2797cd8338d3c5b1dd8a6 Mon Sep 17 00:00:00 2001
From: Nick Allred <nallred91@gmail.com>
Date: Mon, 18 Sep 2017 16:21:43 -0400
Subject: [PATCH] Subtract metrics.contentTop from metrics.viewTop so that the
 flyout does not begin to scroll down once the delta is smaller than the value
 of metrics.contentTop (#1309)

---
 core/flyout_vertical.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/flyout_vertical.js b/core/flyout_vertical.js
index 19d7a4330..d6ad60726 100644
--- a/core/flyout_vertical.js
+++ b/core/flyout_vertical.js
@@ -214,7 +214,7 @@ Blockly.VerticalFlyout.prototype.wheel_ = function(e) {
       delta *= 10;
     }
     var metrics = this.getMetrics_();
-    var pos = metrics.viewTop + delta;
+    var pos = (metrics.viewTop - metrics.contentTop) + delta;
     var limit = metrics.contentHeight - metrics.viewHeight;
     pos = Math.min(pos, limit);
     pos = Math.max(pos, 0);