From 65133ebc1b556406715e83415c3f67cca031dfd5 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Wed, 4 Jun 2014 09:39:08 -0700
Subject: [PATCH] Wait for the fullscreen transition to complete before
 allowing the application to continue. This fixes Alt-Enter in the Steam
 streaming client, which sets the window size and position immediately after
 switching out of fullscreen mode.

---
 src/video/cocoa/SDL_cocoawindow.m | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/video/cocoa/SDL_cocoawindow.m b/src/video/cocoa/SDL_cocoawindow.m
index 0132124c3aa66..71f7bb67be44c 100644
--- a/src/video/cocoa/SDL_cocoawindow.m
+++ b/src/video/cocoa/SDL_cocoawindow.m
@@ -1544,6 +1544,20 @@ - (void)resetCursorRects
 
     if ([data->listener setFullscreenSpace:(state ? YES : NO)]) {
         succeeded = SDL_TRUE;
+
+        /* Wait for the transition to complete, so application changes
+           take effect properly (e.g. setting the window size, etc.)
+         */
+        const int limit = 10000;
+        int count = 0;
+        while ([data->listener isInFullscreenSpaceTransition]) {
+            if ( ++count == limit ) {
+                /* Uh oh, transition isn't completing. Should we assert? */
+                break;
+            }
+            SDL_Delay(1);
+            SDL_PumpEvents();
+        }
     }
 
     [pool release];