From ce21c3bd8e2aa1937541b60cc775ffa99229feaf Mon Sep 17 00:00:00 2001
From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Thu, 18 Aug 2016 11:08:23 +0100
Subject: [PATCH] JAL-2077 handling Cmd-click in scale panel for Mac / Windows

---
 src/jalview/gui/ScalePanel.java |    3 ++-
 src/jalview/util/Platform.java  |   17 ++++++++++++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/jalview/gui/ScalePanel.java b/src/jalview/gui/ScalePanel.java
index e231c6f..316b6be 100755
--- a/src/jalview/gui/ScalePanel.java
+++ b/src/jalview/gui/ScalePanel.java
@@ -26,6 +26,7 @@ import jalview.datamodel.SequenceI;
 import jalview.renderer.ScaleRenderer;
 import jalview.renderer.ScaleRenderer.ScaleMark;
 import jalview.util.MessageManager;
+import jalview.util.Platform;
 
 import java.awt.Color;
 import java.awt.FontMetrics;
@@ -221,7 +222,7 @@ public class ScalePanel extends JPanel implements MouseMotionListener,
    */
   protected void leftMouseButtonPressed(MouseEvent evt, final int res)
   {
-    if (!evt.isControlDown() && !evt.isShiftDown())
+    if (!Platform.isControlDown(evt) && !evt.isShiftDown())
     {
       av.getColumnSelection().clear();
     }
diff --git a/src/jalview/util/Platform.java b/src/jalview/util/Platform.java
index 786f5bf..85a27f6 100644
--- a/src/jalview/util/Platform.java
+++ b/src/jalview/util/Platform.java
@@ -78,10 +78,21 @@ public class Platform
     return f.toString();
   }
 
+  /**
+   * Answers true if the mouse event has Meta-down (on Mac) or Ctrl-down (on
+   * other o/s)
+   * 
+   * @param e
+   * @return
+   */
   public static boolean isControlDown(MouseEvent e)
   {
-    return (jalview.util.Platform.isAMac() ? (Toolkit.getDefaultToolkit()
-            .getMenuShortcutKeyMask() & e.getModifiers()) != 0 : e
-            .isControlDown());
+    if (isAMac())
+    {
+      return (Toolkit.getDefaultToolkit().getMenuShortcutKeyMask() & e
+              .getModifiers()) != 0;
+      // could we use e.isMetaDown() here?
+    }
+    return e.isControlDown();
   }
 }
-- 
1.7.10.2