Prevent SDL backend from eating up keypress events with Ctrl+Alt set.

svn-id: r46259

backends/platform/sdl/events.cpp

@@ -297,9 +297,8 @@ bool OSystem_SDL::handleKeyDown(SDL_Event &ev, Common::Event &event) {
 
 	// Ctrl-Alt-<key> will change the GFX mode
 	if ((b & (Common::KBD_CTRL|Common::KBD_ALT)) == (Common::KBD_CTRL|Common::KBD_ALT)) {
-
-		handleScalerHotkeys(ev.key);
-		return false;
+		if (handleScalerHotkeys(ev.key))
+			return false;
 	}
 
 	if (remapKey(ev, event))

backends/platform/sdl/graphics.cpp

@@ -1910,7 +1910,7 @@ void OSystem_SDL::displayMessageOnOSD(const char *msg) {
 #pragma mark --- Misc ---
 #pragma mark -
 
-void OSystem_SDL::handleScalerHotkeys(const SDL_KeyboardEvent &key) {
+bool OSystem_SDL::handleScalerHotkeys(const SDL_KeyboardEvent &key) {
 	// Ctrl-Alt-a toggles aspect ratio correction
 	if (key.keysym.sym == 'a') {
 		beginGFXTransaction();
@@ -1931,7 +1931,7 @@ void OSystem_SDL::handleScalerHotkeys(const SDL_KeyboardEvent &key) {
 		displayMessageOnOSD(buffer);
 #endif
 		internUpdateScreen();
-		return;
+		return true;
 	}
 
 	int newMode = -1;
@@ -1951,7 +1951,7 @@ void OSystem_SDL::handleScalerHotkeys(const SDL_KeyboardEvent &key) {
 	if (isNormalNumber || isKeypadNumber) {
 		_scalerType = key.keysym.sym - (isNormalNumber ? SDLK_1 : SDLK_KP1);
 		if (_scalerType >= ARRAYSIZE(s_gfxModeSwitchTable))
-			return;
+			return false;
 
 		while (s_gfxModeSwitchTable[_scalerType][factor] < 0) {
 			assert(factor > 0);
@@ -1987,6 +1987,9 @@ void OSystem_SDL::handleScalerHotkeys(const SDL_KeyboardEvent &key) {
 		}
 #endif
 		internUpdateScreen();
-	}
 
+		return true;
+	} else {
+		return false;
+	}
 }

backends/platform/sdl/sdl.h

@@ -492,7 +492,7 @@ protected:
 
 	virtual bool remapKey(SDL_Event &ev, Common::Event &event);
 
-	void handleScalerHotkeys(const SDL_KeyboardEvent &key);
+	bool handleScalerHotkeys(const SDL_KeyboardEvent &key);
 };
 
 #endif