From f262d8932fc89ed8b02b5aff93a4bce7d68b34da Mon Sep 17 00:00:00 2001
From: Bastien Bouclet
Date: Sat, 4 Jun 2011 17:53:42 +0200
Subject: PS3: Keep updating the screen while the XMB is open to prevent it
 from freezing

---
 backends/events/ps3sdl/ps3sdl-events.cpp | 39 ++++++++++++++++++++++++++++++++
 backends/events/ps3sdl/ps3sdl-events.h   |  1 +
 2 files changed, 40 insertions(+)

diff --git a/backends/events/ps3sdl/ps3sdl-events.cpp b/backends/events/ps3sdl/ps3sdl-events.cpp
index 4bcc8e15ba..eefc641844 100644
--- a/backends/events/ps3sdl/ps3sdl-events.cpp
+++ b/backends/events/ps3sdl/ps3sdl-events.cpp
@@ -25,6 +25,8 @@
 #if defined(PLAYSTATION3)
 
 #include "backends/events/ps3sdl/ps3sdl-events.h"
+#include "backends/platform/sdl/sdl.h"
+#include "engines/engine.h"
 
 #include "common/util.h"
 #include "common/events.h"
@@ -121,4 +123,41 @@ bool PS3SdlEventSource::handleJoyButtonUp(SDL_Event &ev, Common::Event &event) {
 	return true;
 }
 
+/**
+ * The XMB (PS3 in game menu) needs the screen buffers to be constantly flip while open.
+ * This pauses execution and keeps redrawing the screen until the XMB is closed.
+ */
+void PS3SdlEventSource::preprocessEvents(SDL_Event *event) {
+	if (event->type == SDL_ACTIVEEVENT) {
+		if (event->active.state == SDL_APPMOUSEFOCUS && !event->active.gain) {
+			// XMB opened
+			if (g_engine)
+				g_engine->pauseEngine(true);
+
+			for (;;) {
+				if (!SDL_PollEvent(event)) {
+					// Locking the screen forces a full redraw
+					Graphics::Surface* screen = g_system->lockScreen();
+					if (screen) {
+						g_system->unlockScreen();
+						g_system->updateScreen();
+					}
+					SDL_Delay(10);
+					continue;
+				}
+				if (event->type == SDL_QUIT)
+					return;
+				if (event->type != SDL_ACTIVEEVENT)
+					continue;
+				if (event->active.state == SDL_APPMOUSEFOCUS && event->active.gain) {
+					// XMB closed
+					if (g_engine)
+						g_engine->pauseEngine(false);
+					return;
+				}
+			}
+		}
+	}
+}
+
 #endif
diff --git a/backends/events/ps3sdl/ps3sdl-events.h b/backends/events/ps3sdl/ps3sdl-events.h
index 328f613350..8cf2f43426 100644
--- a/backends/events/ps3sdl/ps3sdl-events.h
+++ b/backends/events/ps3sdl/ps3sdl-events.h
@@ -30,6 +30,7 @@
  */
 class PS3SdlEventSource : public SdlEventSource {
 protected:
+	void preprocessEvents(SDL_Event *event);
 	bool handleJoyButtonDown(SDL_Event &ev, Common::Event &event);
 	bool handleJoyButtonUp(SDL_Event &ev, Common::Event &event);
 };
-- 
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