From 324a90f4f6e64ec4b92e2b746df5d4a75893044b Mon Sep 17 00:00:00 2001
From: Jaromir Wysoglad
Date: Mon, 22 Jul 2019 19:42:30 +0200
Subject: TTS: Implement tts state switching when needed.

The state has to be pushed and poped when there is a transition
between game and gui code.
---
 base/main.cpp      |  8 ++++++++
 engines/engine.cpp | 12 ++++++++++++
 gui/gui-manager.h  |  2 +-
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/base/main.cpp b/base/main.cpp
index 656a24b94b..ccd213eb31 100644
--- a/base/main.cpp
+++ b/base/main.cpp
@@ -557,10 +557,18 @@ extern "C" int scummvm_main(int argc, const char * const argv[]) {
 				debug("info:author=%s name=%s description=%s", record.getHeader().author.c_str(), record.getHeader().name.c_str(), record.getHeader().description.c_str());
 				break;
 			}
+#endif
+#ifdef USE_TTS
+			Common::TextToSpeechManager *ttsMan = g_system->getTextToSpeechManager();
+			ttsMan->pushState();
 #endif
 			// Try to run the game
 			Common::Error result = runGame(plugin, system, specialDebug);
 
+#ifdef USE_TTS
+			ttsMan->popState();
+#endif
+
 #ifdef ENABLE_EVENTRECORDER
 			// Flush Event recorder file. The recorder does not get reinitialized for next game
 			// which is intentional. Only single game per session is allowed.
diff --git a/engines/engine.cpp b/engines/engine.cpp
index b9859776fc..d34f1a6510 100644
--- a/engines/engine.cpp
+++ b/engines/engine.cpp
@@ -61,6 +61,10 @@
 #include "graphics/pixelformat.h"
 #include "image/bmp.h"
 
+#ifdef USE_TTS
+#include "common/text-to-speech.h"
+#endif
+
 #ifdef _WIN32_WCE
 extern bool isSmartphone();
 #endif
@@ -515,6 +519,11 @@ void Engine::pauseEngineIntern(bool pause) {
 void Engine::openMainMenuDialog() {
 	if (!_mainMenuDialog)
 		_mainMenuDialog = new MainMenuDialog(this);
+#ifdef USE_TTS
+	Common::TextToSpeechManager *ttsMan = g_system->getTextToSpeechManager();
+	ttsMan->pushState();
+	GUI::GuiManager::initTextToSpeech();
+#endif
 
 	setGameToLoadSlot(-1);
 
@@ -536,6 +545,9 @@ void Engine::openMainMenuDialog() {
 	}
 
 	syncSoundSettings();
+#ifdef USE_TTS
+	ttsMan->popState();
+#endif
 }
 
 bool Engine::warnUserAboutUnsupportedGame() {
diff --git a/gui/gui-manager.h b/gui/gui-manager.h
index fa5e715bcb..866bc42e04 100644
--- a/gui/gui-manager.h
+++ b/gui/gui-manager.h
@@ -107,6 +107,7 @@ public:
 	 * only be deleted when that dialog is the top level dialog.
 	 */
 	void addToTrash(GuiObject*, Dialog* parent = 0);
+	static void initTextToSpeech();
 
 	bool _launched;
 
@@ -177,7 +178,6 @@ protected:
 	void giveFocusToDialog(Dialog *dialog);
 	void setLastMousePos(int16 x, int16 y);
 
-	void initTextToSpeech();
 };
 
 } // End of namespace GUI
-- 
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