From 240a3fbffef6facafbd65933322ebc5be57a0ea7 Mon Sep 17 00:00:00 2001
From: Alex Szpakowski <slime73@gmail.com>
Date: Sat, 16 May 2015 16:55:56 -0300
Subject: [PATCH] iOS: Added support for SDL_DisableScreenSaver and
 SDL_EnableScreenSaver.

---
 include/SDL_hints.h              |  3 +++
 src/video/uikit/SDL_uikitvideo.h |  2 ++
 src/video/uikit/SDL_uikitvideo.m | 17 +++++++++++++++++
 3 files changed, 22 insertions(+)

diff --git a/include/SDL_hints.h b/include/SDL_hints.h
index 5eaba8f5a..93ad5cb38 100644
--- a/include/SDL_hints.h
+++ b/include/SDL_hints.h
@@ -243,6 +243,9 @@ extern "C" {
  *  this is problematic. This functionality can be disabled by setting this
  *  hint.
  *
+ *  As of SDL 2.0.4, SDL_EnableScreenSaver and SDL_DisableScreenSaver accomplish
+ *  the same thing on iOS. They should be preferred over this hint.
+ *
  *  This variable can be set to the following values:
  *    "0"       - Enable idle timer
  *    "1"       - Disable idle timer
diff --git a/src/video/uikit/SDL_uikitvideo.h b/src/video/uikit/SDL_uikitvideo.h
index dac80a2b3..190031cc5 100644
--- a/src/video/uikit/SDL_uikitvideo.h
+++ b/src/video/uikit/SDL_uikitvideo.h
@@ -25,6 +25,8 @@
 
 #include "../SDL_sysvideo.h"
 
+void UIKit_SuspendScreenSaver(_THIS);
+
 BOOL UIKit_IsSystemVersionAtLeast(double version);
 CGRect UIKit_ComputeViewFrame(SDL_Window *window, UIScreen *screen);
 
diff --git a/src/video/uikit/SDL_uikitvideo.m b/src/video/uikit/SDL_uikitvideo.m
index c3448efc7..25e446455 100644
--- a/src/video/uikit/SDL_uikitvideo.m
+++ b/src/video/uikit/SDL_uikitvideo.m
@@ -26,6 +26,7 @@
 
 #include "SDL_video.h"
 #include "SDL_mouse.h"
+#include "SDL_hints.h"
 #include "../SDL_sysvideo.h"
 #include "../SDL_pixels_c.h"
 #include "../../events/SDL_events_c.h"
@@ -74,6 +75,7 @@ UIKit_CreateDevice(int devindex)
     device->GetDisplayModes = UIKit_GetDisplayModes;
     device->SetDisplayMode = UIKit_SetDisplayMode;
     device->PumpEvents = UIKit_PumpEvents;
+    device->SuspendScreenSaver = UIKit_SuspendScreenSaver;
     device->CreateWindow = UIKit_CreateWindow;
     device->SetWindowTitle = UIKit_SetWindowTitle;
     device->ShowWindow = UIKit_ShowWindow;
@@ -130,6 +132,21 @@ UIKit_VideoQuit(_THIS)
     UIKit_QuitModes(_this);
 }
 
+void
+UIKit_SuspendScreenSaver(_THIS)
+{
+    @autoreleasepool {
+        /* Ignore ScreenSaver API calls if the idle timer hint has been set. */
+        /* FIXME: The idle timer hint should be deprecated for SDL 2.1. */
+        if (SDL_GetHint(SDL_HINT_IDLE_TIMER_DISABLED) == NULL) {
+            UIApplication *app = [UIApplication sharedApplication];
+
+            /* Prevent the display from dimming and going to sleep. */
+            app.idleTimerDisabled = (_this->suspend_screensaver != SDL_FALSE);
+        }
+    }
+}
+
 BOOL
 UIKit_IsSystemVersionAtLeast(double version)
 {