From 47127be7dd62dfd0af3e0022c9de5b2af9f54d62 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Sat, 17 Nov 2018 16:05:11 +0000
Subject: [PATCH] MacOS: fix necessary for 10.14.2 public beta 3

Apple keeps changing how windows are drawn under 10.14 Mojave, even between minor
releases!
This change is required to correctly update a GL window moved from a non-retina to
a retina display under 10.14.2 public beta 3 (glpuzzle shows the problem).
It's unsure if it will still be necessary with 10.14.2, or later versions, but the change
does no harm if it's not necessary.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@13125 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_cocoa.mm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index 1617be591..d04724ec2 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -1445,9 +1445,11 @@ static FLWindowDelegate *flwindowdelegate_instance = nil;
       // useful for Mandelbrot to recreate the layer's bitmap
       [view displayLayer:[view layer]];
     }
-    if (fl_mac_os_version < 101401 && window->parent() && window->as_gl_window() && Fl::use_high_res_GL()) {
+    if (fl_mac_os_version < 101401 && window->as_gl_window() && Fl::use_high_res_GL()) {
       [view layer].contentsScale = Fl_X::i(window)->mapped_to_retina() ? 2. : 1.;
     }
+    if (window->as_gl_window() && Fl::use_high_res_GL())
+      window->redraw(); // necessary with 10.14.2 public beta 3
   }
 #endif
   fl_unlock_function();