From 45922e6f5df5ee74e63c4945cd9c4224692258f8 Mon Sep 17 00:00:00 2001
From: uclaros <uclaros@gmail.com>
Date: Wed, 2 Nov 2016 14:38:25 +0200
Subject: [PATCH] DoubleClick middle mouse button to zoom to extents (AutoCad
 style).

---
 lib/Slic3r/GUI/3DScene.pm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/Slic3r/GUI/3DScene.pm b/lib/Slic3r/GUI/3DScene.pm
index ce158bd74..079008314 100644
--- a/lib/Slic3r/GUI/3DScene.pm
+++ b/lib/Slic3r/GUI/3DScene.pm
@@ -148,6 +148,14 @@ sub mouse_event {
     } elsif ($e->LeftDClick) {
         $self->on_double_click->()
             if $self->on_double_click;
+    } elsif ($e->MiddleDClick) {
+        if (@{$self->volumes}) {
+            $self->zoom_to_volumes;
+        } else {
+            $self->zoom_to_bed;
+        }
+        $self->_dirty(1);
+        $self->Refresh;
     } elsif (($e->LeftDown || $e->RightDown) && not $e->ShiftDown) {
         # If user pressed left or right button we first check whether this happened
         # on a volume or not.