From e5830283ada6449447fc60018cdc61aafef0f753 Mon Sep 17 00:00:00 2001
From: hpnrep6 <hpnrep6@gmail.com>
Date: Wed, 1 Sep 2021 13:16:35 -0400
Subject: [PATCH] Allow command key zoom on mac devices (#5419)

* Allow command key zoom on mac devices

* Clarify comment on mac command key zoom
---
 core/workspace_svg.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/core/workspace_svg.js b/core/workspace_svg.js
index 21ee217ae..b513ed674 100644
--- a/core/workspace_svg.js
+++ b/core/workspace_svg.js
@@ -1800,7 +1800,15 @@ Blockly.WorkspaceSvg.prototype.onMouseWheel_ = function(e) {
   }
 
   var scrollDelta = Blockly.utils.getScrollDeltaPixels(e);
-  if (canWheelZoom && (e.ctrlKey || !canWheelMove)) {
+
+  // Zoom should also be enabled by the command key on Mac devices,
+  // but not super on Unix.
+  var commandKey;
+  if (Blockly.utils.userAgent.MAC) {
+    commandKey = e.metaKey;
+  }
+
+  if (canWheelZoom && (e.ctrlKey || commandKey || !canWheelMove)) {
     // Zoom.
     // The vertical scroll distance that corresponds to a click of a zoom
     // button.