SDL: Make activateManager/deactivateManager SdlGraphicsManager specific.

We can do this now that we can use virtual inheritance and dynamic_cast
because we enabled RTTI.

1 files changed, 5 insertions, 5 deletions

diff --git a/backends/platform/sdl/sdl.cpp b/backends/platform/sdl/sdl.cpp
index c240727069..6175f07a53 100644
--- a/backends/platform/sdl/sdl.cpp
+++ b/backends/platform/sdl/sdl.cpp
@@ -91,7 +91,7 @@ OSystem_SDL::~OSystem_SDL() {
 	delete _savefileManager;
 	_savefileManager = 0;
 	if (_graphicsManager) {
-		_graphicsManager->deactivateManager();
+		dynamic_cast<SdlGraphicsManager *>(_graphicsManager)->deactivateManager();
 	}
 	delete _graphicsManager;
 	_graphicsManager = 0;
@@ -240,7 +240,7 @@ void OSystem_SDL::initBackend() {
 	// so the virtual keyboard can be initialized, but we have to add the
 	// graphics manager as an event observer after initializing the event
 	// manager.
-	_graphicsManager->activateManager();
+	dynamic_cast<SdlGraphicsManager *>(_graphicsManager)->activateManager();
 }
 
 #if defined(USE_TASKBAR)
@@ -585,14 +585,14 @@ bool OSystem_SDL::setGraphicsMode(int mode) {
 	// manager, delete and create the new mode graphics manager
 	if (_graphicsMode >= _firstGLMode && mode < _firstGLMode) {
 		debug(1, "switching to plain SDL graphics");
-		_graphicsManager->deactivateManager();
+		dynamic_cast<SdlGraphicsManager *>(_graphicsManager)->deactivateManager();
 		delete _graphicsManager;
 		_graphicsManager = new SurfaceSdlGraphicsManager(_eventSource);
 
 		switchedManager = true;
 	} else if (_graphicsMode < _firstGLMode && mode >= _firstGLMode) {
 		debug(1, "switching to OpenGL graphics");
-		_graphicsManager->deactivateManager();
+		dynamic_cast<SdlGraphicsManager *>(_graphicsManager)->deactivateManager();
 		delete _graphicsManager;
 		_graphicsManager = new OpenGLSdlGraphicsManager(_desktopWidth, _desktopHeight, _eventSource);
 
@@ -602,7 +602,7 @@ bool OSystem_SDL::setGraphicsMode(int mode) {
 	_graphicsMode = mode;
 
 	if (switchedManager) {
-		_graphicsManager->activateManager();
+		dynamic_cast<SdlGraphicsManager *>(_graphicsManager)->activateManager();
 
 		_graphicsManager->beginGFXTransaction();
 #ifdef USE_RGB_COLOR