Fix gold withdrawal in SDL1

1. Unifies SDL1 and SDL2 text input handling.
2. Moves game-specific text input handling out of misc_msg.
3. Disables Unicode processing when not inputting text in SDL1.

This fixes gold withdrawal in SDL1.

Source/diablo.cpp

@@ -653,6 +653,28 @@ void HandleMouseButtonUp(Uint8 button, uint16_t modState)
 	}
 }
 
+bool HandleTextInput(string_view text)
+{
+	if (IsTalkActive()) {
+		control_new_text(text);
+		return true;
+	}
+	if (dropGoldFlag) {
+		GoldDropNewText(text);
+		return true;
+	}
+	if (IsWithdrawGoldOpen) {
+		GoldWithdrawNewText(text);
+		return true;
+	}
+	return false;
+}
+
+[[maybe_unused]] void LogUnhandledEvent(const char *name, int value)
+{
+	LogVerbose("Unhandled SDL event: {} {}", name, value);
+}
+
 void GameEventHandler(const SDL_Event &event, uint16_t modState)
 {
 	GameAction action;
@@ -675,12 +697,33 @@ void GameEventHandler(const SDL_Event &event, uint16_t modState)
 	}
 
 	switch (event.type) {
-	case SDL_KEYDOWN:
+	case SDL_KEYDOWN: {
+#ifdef USE_SDL1
+		// SDL1 does not support TEXTINPUT events, so we emulate them here.
+		const Uint16 bmpCodePoint = event.key.keysym.unicode;
+		if (bmpCodePoint >= ' ') {
+			std::string utf8;
+			AppendUtf8(bmpCodePoint, utf8);
+			if (HandleTextInput(utf8)) {
+				return;
+			}
+		}
+#endif
 		PressKey(event.key.keysym.sym, modState);
 		return;
+	}
 	case SDL_KEYUP:
 		ReleaseKey(event.key.keysym.sym);
 		return;
+#if SDL_VERSION_ATLEAST(2, 0, 0)
+	case SDL_TEXTEDITING:
+		return;
+	case SDL_TEXTINPUT:
+		if (!HandleTextInput(event.text.text)) {
+			LogUnhandledEvent("SDL_TEXTINPUT", event.text.windowID);
+		}
+		return;
+#endif
 	case SDL_MOUSEMOTION:
 		MousePosition = { event.motion.x, event.motion.y };
 		gmenu_on_mouse_move();

Source/miniwin/misc_msg.cpp

@@ -151,12 +151,17 @@ bool FetchMessage_Real(SDL_Event *event, uint16_t *modState)
 		return true;
 
 	switch (e.type) {
-#ifndef USE_SDL1
+#if SDL_VERSION_ATLEAST(2, 0, 0)
 	case SDL_CONTROLLERAXISMOTION:
 	case SDL_CONTROLLERBUTTONDOWN:
 	case SDL_CONTROLLERBUTTONUP:
 	case SDL_FINGERDOWN:
 	case SDL_FINGERUP:
+	case SDL_TEXTEDITING:
+	case SDL_TEXTINPUT:
+	case SDL_WINDOWEVENT:
+#else
+	case SDL_ACTIVEEVENT:
 #endif
 	case SDL_JOYAXISMOTION:
 	case SDL_JOYHATMOTION:
@@ -165,24 +170,11 @@ bool FetchMessage_Real(SDL_Event *event, uint16_t *modState)
 		*event = e;
 		break;
 	case SDL_KEYDOWN:
-	case SDL_KEYUP: {
+	case SDL_KEYUP:
-#ifdef USE_SDL1
-		if (gbRunGame && (IsTalkActive() || dropGoldFlag)) {
-			Uint16 unicode = e.key.keysym.unicode;
-			if (unicode >= ' ') {
-				std::string utf8;
-				AppendUtf8(unicode, utf8);
-				if (IsTalkActive())
-					control_new_text(utf8);
-				if (dropGoldFlag)
-					GoldDropNewText(utf8);
-			}
-		}
-#endif
 		if (e.key.keysym.sym == -1)
 			return FalseAvail(e.type == SDL_KEYDOWN ? "SDL_KEYDOWN" : "SDL_KEYUP", e.key.keysym.sym);
 		*event = e;
-	} break;
+		break;
 	case SDL_MOUSEMOTION:
 		*event = e;
 		if (ControlMode == ControlTypes::KeyboardAndMouse && invflag)
@@ -213,31 +205,6 @@ bool FetchMessage_Real(SDL_Event *event, uint16_t *modState)
 	case SDL_KEYMAPCHANGED:
 		return FalseAvail("SDL_KEYMAPCHANGED", 0);
 #endif
-	case SDL_TEXTEDITING:
-		if (gbRunGame)
-			break;
-		return FalseAvail("SDL_TEXTEDITING", e.edit.length);
-	case SDL_TEXTINPUT:
-		if (gbRunGame && IsTalkActive()) {
-			control_new_text(e.text.text);
-			break;
-		}
-		if (gbRunGame && dropGoldFlag) {
-			GoldDropNewText(e.text.text);
-			break;
-		}
-		if (gbRunGame && IsWithdrawGoldOpen) {
-			GoldWithdrawNewText(e.text.text);
-			break;
-		}
-		return FalseAvail("SDL_TEXTINPUT", e.text.windowID);
-	case SDL_WINDOWEVENT:
-		*event = e;
-		break;
-#else
-	case SDL_ACTIVEEVENT:
-		*event = e;
-		break;
 #endif
 	default:
 		return FalseAvail("unknown", e.type);

Source/utils/display.cpp

@@ -287,9 +287,6 @@ bool SpawnWindow(const char *lpWindowName)
 	}
 #endif
 
-#ifdef USE_SDL1
-	SDL_EnableUNICODE(1);
-#endif
 #ifdef USE_SDL1
 	// On SDL 1, there are no ADDED/REMOVED events.
 	// Always try to initialize the first joystick.

Source/utils/sdl2_to_1_2_backports.h

@@ -97,10 +97,12 @@ SDL_LogPriority SDL_LogGetPriority(int category);
 
 inline void SDL_StartTextInput()
 {
+	SDL_EnableUNICODE(1);
 }
 
 inline void SDL_StopTextInput()
 {
+	SDL_EnableUNICODE(0);
 }
 
 inline void SDL_SetTextInputRect(const SDL_Rect *r)